Book Image

Windows APT Warfare

By : Sheng-Hao Ma
5 (2)
Book Image

Windows APT Warfare

5 (2)
By: Sheng-Hao Ma

Overview of this book

An Advanced Persistent Threat (APT) is a severe form of cyberattack that lies low in the system for a prolonged time and locates and then exploits sensitive information. Preventing APTs requires a strong foundation of basic security techniques combined with effective security monitoring. This book will help you gain a red team perspective on exploiting system design and master techniques to prevent APT attacks. Once you’ve understood the internal design of operating systems, you’ll be ready to get hands-on with red team attacks and, further, learn how to create and compile C source code into an EXE program file. Throughout this book, you’ll explore the inner workings of how Windows systems run and how attackers abuse this knowledge to bypass antivirus products and protection. As you advance, you’ll cover practical examples of malware and online game hacking, such as EXE infection, shellcode development, software packers, UAC bypass, path parser vulnerabilities, and digital signature forgery, gaining expertise in keeping your system safe from this kind of malware. By the end of this book, you’ll be well equipped to implement the red team techniques that you've learned on a victim's computer environment, attempting to bypass security and antivirus products, to test its defense against Windows APT attacks.
Table of Contents (17 chapters)
1
Part 1 – Modern Windows Compiler
5
Part 2 – Windows Process Internals
9
Part 3 – Abuse System Design and Red Team Tips

Signature verification

You can find how to call Windows APIs to verify that a program is signed in Microsoft’s public document, Example C Program: Verifying the Signature of a PE File (docs.microsoft.com/en-us/windows/win32/seccrypto/example-c-program--verifying-the-signature-of-a-pe-file). This document provides the complete C/C++ source code, showing how to call the Windows API to verify the validity of a digital signature.

The following example is the winTrust project in the Chapter#9 folder of the GitHub project. In order to save space, this book only extracts the highlighted code; the complete source code should be referred to in the complete project for detailed reading.

Figure 9.2 shows the main entry section. In Figure 9.2, the main entry is quite compact, with a VerifyEmbeddedSignature function that is designed to read in a specified program to verify the validity of the digital signature and prints out the result on the screen:

Figure 9.2 – The main function

Figure...