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

Import API analyzer example

The following example is the iat_parser.cpp source code under the Chapter#5 folder of the GitHub project. In order to save space, this book only extracts the highlighted code. Please refer to the complete source code to read the full project.

Let’s try writing tools to analyze which system functions are imported into EXE programs. Figure 5.4 shows the entry function of iat_parser.cpp:

Figure 5.4 – The main function of iat_parser.cpp

Figure 5.4 – The main function of iat_parser.cpp

At lines 44-50 of the code, we first read the entire program into memory by fopen, and get the size of the global IAT and its RVA from the 13th item (i.e., IMAGE_DIRECTORY_ENTRY_IAT) in DataDirectory. Since each field in the global IAT is the correct system function address that is referenced in the .text section, and will point to the RVA of the system function name storage structure (IMAGE_IMPORT_BY_NAME) on the INT, each field is therefore an IMAGE_THUNK_DATA variable. We simply...