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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
Concepts
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Authors (2):
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Alexey Kleymenov Alexey Kleymenov
Author Profile Icon Alexey Kleymenov
Alexey Kleymenov
Alexey Kleymenov started working in the information security industry in his second year at university and now has more than 14 years of practical experience at several international cybersecurity companies. He is a malware analyst and software developer who is passionate about reverse engineering, automation, and research. Alexey has taken part in numerous investigations analyzing all types of malicious samples, has developed various systems to perform threat intelligence activities in the IT, OT, and IoT sectors, and has authored several patents. Alexey is a member of the (ISC)² organization and holds the CISSP certification. Finally, he is a founder of the RE and More project, teaching people all over the world how to perform malware analysis in the most efficient way.
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See other products by Alexey Kleymenov
Amr Thabet Amr Thabet
Author Profile Icon Amr Thabet
Amr Thabet
LinkedIn
Amr Thabet is a malware researcher and an incident handler with over 10 years of experience. He has worked in several Fortune 500 companies, including Symantec and Tenable. Currently, he is the founder of MalTrak, providing real-world in-depth training in malware analysis, incident response, threat hunting, and red teaming to help the next generation of cybersecurity enthusiasts to build their careers in cybersecurity. nAmr is also a speaker and trainer at some of the top security conferences all around the world, including Blackhat, DEFCON, Hack In Paris, and VB Conference. He was also featured in Christian Science Monitor for his work on Stuxnet.
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Toc

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

Modifying SSDT in an x86 environment

In 32-bit systems, the SSDT address is exported by ntoskrnl.exe under the name of KeServiceDescriptorTable. There are slots for four different SSDT entries, but Windows has used only two of them so far: KeServiceDescriptorTable and KeServiceDescriptorTableShadow.

When a user-mode application uses sysenter, as you saw in Figure 3, the application provides the function number or ID in the eax register. This value in eax is divided in the following way:

Figure 7: The sysenter eax argument value

These values are as follows:

  • bits 0-11: This is the System Service Number (SSN), which is the index of this function in the SSDT
  • bits 12-13: This is the Service Descriptor Table (SDT), which represents the SSDT number (here, KeServiceDescriptorTable is 0x00, and KeServiceDescriptorTableShadow is 0x01)
  • bits 14-31: This value is not used and is filled with zeros

As there are only two tables, the value of SDT is always either 00 or 01. The KeServiceDescriptorTable...

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Authors (2)

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Profile icon Alexey Kleymenov
Alexey Kleymenov
Alexey Kleymenov started working in the information security industry in his second year at university and now has more than 14 years of practical experience at several international cybersecurity companies. He is a malware analyst and software developer who is passionate about reverse engineering, automation, and research. Alexey has taken part in numerous investigations analyzing all types of malicious samples, has developed various systems to perform threat intelligence activities in the IT, OT, and IoT sectors, and has authored several patents. Alexey is a member of the (ISC)² organization and holds the CISSP certification. Finally, he is a founder of the RE and More project, teaching people all over the world how to perform malware analysis in the most efficient way.
Read more
See other products by Alexey Kleymenov
Profile icon Amr Thabet
Amr Thabet
LinkedIn icon Github icon
Amr Thabet is a malware researcher and an incident handler with over 10 years of experience. He has worked in several Fortune 500 companies, including Symantec and Tenable. Currently, he is the founder of MalTrak, providing real-world in-depth training in malware analysis, incident response, threat hunting, and red teaming to help the next generation of cybersecurity enthusiasts to build their careers in cybersecurity. Amr is also a speaker and trainer at some of the top security conferences all around the world, including Blackhat, DEFCON, Hack In Paris, and VB Conference. He was also featured in Christian Science Monitor for his work on Stuxnet.
Read more
See other products by Amr Thabet
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