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Mastering Malware Analysis

You're reading from   Mastering Malware Analysis The complete malware analyst's guide to combating malicious software, APT, cybercrime, and IoT attacks

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Product type Paperback
Published in Jun 2019
Publisher Packt
ISBN-13 9781789610789
Length 562 pages
Edition 1st Edition
Languages
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Authors (2):
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Alexey Kleymenov Alexey Kleymenov
Author Profile Icon Alexey Kleymenov
Alexey Kleymenov
Amr Thabet Amr Thabet
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Amr Thabet
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Table of Contents (18) Chapters Close

Preface 1. Section 1: Fundamental Theory FREE CHAPTER
2. A Crash Course in CISC/RISC and Programming Basics 3. Section 2: Diving Deep into Windows Malware
4. Basic Static and Dynamic Analysis for x86/x64 5. Unpacking, Decryption, and Deobfuscation 6. Inspecting Process Injection and API Hooking 7. Bypassing Anti-Reverse Engineering Techniques 8. Understanding Kernel-Mode Rootkits 9. Section 3: Examining Cross-Platform Malware
10. Handling Exploits and Shellcode 11. Reversing Bytecode Languages: .NET, Java, and More 12. Scripts and Macros: Reversing, Deobfuscation, and Debugging 13. Section 4: Looking into IoT and Other Platforms
14. Dissecting Linux and IoT Malware 15. Introduction to macOS and iOS Threats 16. Analyzing Android Malware Samples 17. Other Books You May Enjoy

The infrastructure of Windows

As we mentioned previously, the OS is divided into two parts: user mode and kernel mode. This is demonstrated in the following diagram:

Figure 2: The Windows OS design

Now, let's learn about the scope of these applications:

  • User mode: This contains all the processes running in the system (which you can see in task manager). These processes are running under subsystems such as POSIX, the Win32 subsystem, and (more recently) the Windows subsystem for Linux. All of these subsystems call different APIs, which are tailored for that system through specific libraries, such as kernel32.dll in the Win32 and Win64 subsystems.
    All of these Dynamic-Link Libraries (DLLs) call APIs in one DLL (ntdll.dll), which communicates directly to the kernel mode. Ntdll.dll is a library that sends requests to the kernel using special instructions, such as sysenter or syscall (depending on the mode and whether it is Intel or AMD; in this chapter, we will be using them interchangeably...
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