Gain practical knowledge of shellcode and leverage it to develop shellcode for Windows and Linux operating systems, while understanding the countermeasures in place and how these can be bypassed Key Features Get up and running with shellcode fundamentals Develop Shellcode for Windows and Linux Understand the building blocks of shellcode Book DescriptionShellcoding is a technique that is executed by many red teams and used in penetration testing and real-world attacks. Books on shellcode can be complex, and writing shellcode is perceived as a kind of "dark art." Offensive Shellcode from Scratch will help you to build a strong foundation of shellcode knowledge and enable you to use it with Linux and Windows. This book helps you to explore simple to more complex examples of shellcode that are used by real advanced persistent threat (APT) groups. You'll get to grips with the components of shellcode and understand which tools are used when building shellcode, along with the automated tools that exist to create shellcode payloads. As you advance through the chapters, you'll become well versed in assembly language and its various components, such as registers, flags, and data types. This shellcode book also teaches you about the compilers and decoders that are used when creating shellcode. Finally, the book takes you through various attacks that entail the use of shellcode in both Windows and Linux environments. By the end of this shellcode book, you'll have gained the knowledge needed to understand the workings of shellcode and build your own exploits by using the concepts explored. What you will learn Gain a thorough understanding of shellcode Get to grips with assembly language and its key purpose in shellcode development Identify key elements of memory registers Explore debuggers and their use cases Get up and running with hands-on shellcode creation for both Windows and Linux Exploit Windows and Linux operating systems using shellcode Assess countermeasures of Windows and Linux Who this book is forThis book is for red teamers, penetration testers, and anyone looking to learn about shellcode and find out how it is used to break into systems by making use of simple to complex instructions of code in memory. Basic shellcode knowledge is helpful but not mandatory to understand the topics covered in this book.

Get up to speed with various penetration testing techniques and resolve security threats of varying complexity Key Features Enhance your penetration testing skills to tackle security threats Learn to gather information, find vulnerabilities, and exploit enterprise defenses Navigate secured systems with the most up-to-date version of Kali Linux (2019.1) and Metasploit (5.0.0) Book DescriptionSending information via the internet is not entirely private, as evidenced by the rise in hacking, malware attacks, and security threats. With the help of this book, you'll learn crucial penetration testing techniques to help you evaluate enterprise defenses. You'll start by understanding each stage of pentesting and deploying target virtual machines, including Linux and Windows. Next, the book will guide you through performing intermediate penetration testing in a controlled environment. With the help of practical use cases, you'll also be able to implement your learning in real-world scenarios. By studying everything from setting up your lab, information gathering and password attacks, through to social engineering and post exploitation, you'll be able to successfully overcome security threats. The book will even help you leverage the best tools, such as Kali Linux, Metasploit, Burp Suite, and other open source pentesting tools to perform these techniques. Toward the later chapters, you'll focus on best practices to quickly resolve security threats. By the end of this book, you'll be well versed with various penetration testing techniques so as to be able to tackle security threats effectively What you will learn Perform entry-level penetration tests by learning various concepts and techniques Understand both common and not-so-common vulnerabilities from an attacker's perspective Get familiar with intermediate attack methods that can be used in real-world scenarios Understand how vulnerabilities are created by developers and how to fix some of them at source code level Become well versed with basic tools for ethical hacking purposes Exploit known vulnerable services with tools such as Metasploit Who this book is forIf you're just getting started with penetration testing and want to explore various security domains, this book is for you. Security professionals, network engineers, and amateur ethical hackers will also find this book useful. Prior knowledge of penetration testing and ethical hacking is not necessary.