Mating Season

LINUX BASICS FOR HACKERS. Copyright © 2019 by OccupyTheWeb. LINUX BASICS FOR HACKERS Getting Started with Networking, Scripting, and Security in Kali by OccupyTheWeb About the Author OccupyTheWeb (OTW) is the pseudonym for the founder and primary writer for the hacker and pentester training website, https://www.hackersarise. com/. He is a former college professor and has over 20 years of experience in the information technology industry. He has trained hackers throughout the US, including branches of the US military (Army, Air Force, and Navy) and the US intelligence community (CIA, NSA, and DNI). He is also an avid mountain biker and snow boarder. Names: OccupyTheWeb, author. Title: Linux basics for hackers : getting started with networking, scripting, and security in Kali / OccupyTheWeb. Description: First edition. | San Francisco : No Starch Press, Inc., [2018]. Identifiers: LCCN 2018030544 (print) | LCCN 2018032646 (ebook) | ISBN 9781593278564 (epub) | ISBN 159327856X (epub) | ISBN 9781593278557 (print) | ISBN 1593278551 (print) | ISBN 9781593278564 (ebook) | ISBN 159327856X (ebook) Subjects: LCSH: Penetration testing (Computer security) | Kali Linux. | Hackers. | Operating systems (Computers) Title Page Copyright Page Dedication About the Author About the Technical Reviewer BRIEF CONTENTS CONTENTS IN DETAIL ACKNOWLEDGMENTS INTRODUCTION What’s in This Book What Is Ethical Hacking? Why Hackers Use Linux Downloading Kali Linux Virtual Machines Setting Up Kali 1 GETTING STARTED WITH THE BASICS Introductory Terms and Concepts A Tour of Kali Basic Commands in Linux Finding Stuff Modifying Files and Directories Go Play Now! Exercises 2 TEXT MANIPULATION Viewing Files Filtering Text with grep Using sed to Find and Replace Viewing Files with more and less Summary Exercises 3 ANALYZING AND MANAGING NETWORKS Analyzing Networks with ifconfig Checking Wireless Network Devices with iwconfig Changing Your Network Information Manipulating the Domain Name System Summary Exercises 4 ADDING AND REMOVING SOFTWARE Using apt to Handle Software Adding Repositories to Your sources.list File Using a GUI-based Installer Installing Software with git Summary Exercises 5 CONTROLLING FILE AND DIRECTORY PERMISSIONS Different Types of Users Granting Permissions Checking Permissions Changing Permissions Setting More Secure Default Permissions with Masks Special Permissions Summary Exercises 6 PROCESS MANAGEMENT Viewing Processes Managing Processes Scheduling Processes Summary Exercises 7 MANAGING USER ENVIRONMENT VARIABLES Viewing and Modifying Environment Variables Changing Your Shell Prompt Changing Your PATH Creating a User-Defined Variable Summary Exercises 8 BASH SCRIPTING A Crash Course in Bash Your First Script: “Hello, Hackers-Arise!” Your Very First Hacker Script: Scan for Open Ports Common Built-in Bash Commands Summary Exercises 9 COMPRESSING AND ARCHIVING What Is Compression? Tarring Files Together Compressing Files Creating Bit-by-Bit or Physical Copies of Storage Devices Summary Exercises 10 FILESYSTEM AND STORAGE DEVICE MANAGEMENT The Device Directory /dev Mounting and Unmounting Monitoring Filesystems Summary Exercises 11 THE LOGGING SYSTEM The rsyslog Logging Daemon Automatically Cleaning Up Logs with logrotate Remaining Stealthy Summary Exercises 12 USING AND ABUSING SERVICES Starting, Stopping, and Restarting Services Creating an HTTP Web Server with the Apache Web Server OpenSSH and the Raspberry Spy Pi Extracting Information from MySQL Summary Exercises 13 BECOMING SECURE AND ANONYMOUS How the Internet Gives Us Away The Onion Router System Proxy Servers Virtual Private Networks Encrypted Email Summary Exercises 14 UNDERSTANDING AND INSPECTING WIRELESS NETWORKS Wi-Fi Networks Detecting and Connecting to Bluetooth Summary Exercises 15 MANAGING THE LINUX KERNEL AND LOADABLE KERNEL MODULES What Is a Kernel Module? Checking the Kernel Version Kernel Tuning with sysctl Managing Kernel Modules Summary Exercises 16 AUTOMATING TASKS WITH JOB SCHEDULING Scheduling an Event or Job to Run on an Automatic Basis Using rc Scripts to Run Jobs at Startup Adding Services to Your Bootup via a GUI Summary Exercises 17 PYTHON SCRIPTING BASICS FOR HACKERS Adding Python Modules Getting Started Scripting with Python Lists Modules Object-Oriented Programming (OOP) Network Communications in Python Dictionaries, Loops, and Control Statements Improving Our Hacking Scripts Exceptions and Password Crackers Summary Exercises INDEX This practical, tutorial-style book uses the Kali Linux distribution to teach Linux basics with a focus on how hackers would use them. Topics include Linux command line basics, filesystems, networking, BASH basics, package management, logging, and the Linux kernel and drivers. If you're getting started along the exciting path of hacking, cybersecurity, and pentesting, Linux Basics for Hackers is an excellent first step. Using Kali Linux, an advanced penetration testing distribution of Linux, you'll learn the basics of using the Linux operating system and acquire the tools and techniques you'll need to take control of a Linux environment. First, you'll learn how to install Kali on a virtual machine and get an introduction to basic Linux concepts. Next, you'll tackle broader Linux topics like manipulating text, controlling file and directory permissions, and managing user environment variables. You'll then focus in on foundational hacking concepts like security and anonymity and learn scripting skills with bash and Python. Practical tutorials and exercises throughout will reinforce and test your skills as you learn how to: - Cover your tracks by changing your network information and manipulating the rsyslog logging utility - Write a tool to scan for network connections, and connect and listen to wireless networks - Keep your internet activity stealthy using Tor, proxy servers, VPNs, and encrypted email - Write a bash script to scan open ports for potential targets - Use and abuse services like MySQL, Apache web server, and OpenSSH - Build your own hacking tools, such as a remote video spy camera and a password cracker Hacking is complex, and there is no single way in. Why not start at the beginning with Linux Basics for Hackers ? If you're getting started along the exciting path of hacking, cybersecurity, and pentesting, Linux Basics for Hackers is an excellent first step. Using Kali Linux, an advanced penetration testing distribution of Linux, you'll learn the basics of using the Linux operating system and acquire the tools and techniques you'll need to take control of a Linux environment. First, you'll learn how to install Kali on a virtual machine and get an introduction to basic Linux concepts. Next, you'll tackle broader Linux topics like manipulating text, controlling file and directory permissions, and managing user environment variables. You'll then focus in on foundational hacking concepts like security and anonymity and learn scripting skills with bash and Python. Practical tutorials and exercises throughout will reinforce and test your skills as you learn how to: •Cover your tracks by changing your network information and manipulating the rsyslog logging utility •Write a tool to scan for network connections, and connect and listen to wireless networks •Keep your internet activity stealthy using Tor, proxy servers, VPNs, and encrypted email •Write a bash script to scan open ports for potential targets •Use and abuse services like MySQL, Apache web server, and OpenSSH •Build your own hacking tools, such as a remote video spy camera and a password cracker Hacking is complex, and there is no single way in. Why not start at the beginning with Linux Basics for Hackers? Covers Kali Linux and Python 3 Getting started with the basics -- Text manipulation -- Analyzing and managing networks -- Adding and removing software -- Controlling file and directory permissions -- Process management -- Managing user environment variables -- Bash scripting -- Compressing and archiving -- Filesystem and storage device management -- The logging system -- Using and abusing services -- Security and anonymity -- Wireless networking -- Linux kernel and drivers -- Scheduling jobs -- Python scripting basics Aimed at helping readers build a foundation of Linux skills, this guide also addresses MySQL, postgresql, and Python scripting. The guide also provides access to numerous real-world examples and hands-on exercises.--adapted from publisher's description "Builds a foundation of Linux skills; this guide also addresses MySQL, postgresql, and Python scripting. Provides access to numerous real-world examples and hands-on exercises"-- Provided by publisher