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Windows APT Warfare

You're reading from   Windows APT Warfare Identify and prevent Windows APT attacks effectively

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Product type Paperback
Published in Mar 2023
Publisher Packt
ISBN-13 9781804618110
Length 258 pages
Edition 1st Edition
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Author (1):
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Sheng-Hao Ma Sheng-Hao Ma
Author Profile Icon Sheng-Hao Ma
Sheng-Hao Ma
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Table of Contents (17) Chapters Close

Preface 1. Part 1 – Modern Windows Compiler
2. Chapter 1: From Source to Binaries – The Journey of a C Program FREE CHAPTER 3. Chapter 2: Process Memory – File Mapping, PE Parser, tinyLinker, and Hollowing 4. Chapter 3: Dynamic API Calling – Thread, Process, and Environment Information 5. Part 2 – Windows Process Internals
6. Chapter 4: Shellcode Technique – Exported Function Parsing 7. Chapter 5: Application Loader Design 8. Chapter 6: PE Module Relocation 9. Part 3 – Abuse System Design and Red Team Tips
10. Chapter 7: PE to Shellcode – Transforming PE Files into Shellcode 11. Chapter 8: Software Packer Design 12. Chapter 9: Digital Signature – Authenticode Verification 13. Chapter 10: Reversing User Account Control and Bypassing Tricks 14. Index 15. Other Books You May Enjoy Appendix – NTFS, Paths, and Symbols

The open source project pe_to_shellcode analysis

Polish researcher Aleksandra Doniec (@hasherezade on Twitter) at Malwarebytes has released the open source pe_to_shellcode project (github.com/hasherezade/pe_to_shellcode), which is a set of stubs written in x86 assembly language. A stub is actually shellcode, except that the payload usually used for loading is referred to as a stub. This open source project is a complete implementation of the lightweight application loader.

In this chapter, we will use the 32-bit version of this project.

In the previous chapter, we detailed that a lightweight application loader would require at least three tasks:

  1. Allocate new memory to mount the target EXE file by file mapping.
  2. Fix the IAT.
  3. Relocate addresses according to the relocation table.

The first task uses VirtualAlloc to request a block of memory; the second task uses LoadLibraryA to mount the DLL into dynamic memory and GetProcAddress to search for the correct address...

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