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Antivirus Bypass Techniques

You're reading from   Antivirus Bypass Techniques Learn practical techniques and tactics to combat, bypass, and evade antivirus software

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Product type Paperback
Published in Jul 2021
Publisher Packt
ISBN-13 9781801079747
Length 242 pages
Edition 1st Edition
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Authors (2):
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Uriel Kosayev Uriel Kosayev
Author Profile Icon Uriel Kosayev
Uriel Kosayev
Nir Yehoshua Nir Yehoshua
Author Profile Icon Nir Yehoshua
Nir Yehoshua
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Toc

Table of Contents (13) Chapters Close

Preface 1. Section 1: Know the Antivirus – the Basics Behind Your Security Solution
2. Chapter 1: Introduction to the Security Landscape FREE CHAPTER 3. Chapter 2: Before Research Begins 4. Chapter 3: Antivirus Research Approaches 5. Section 2: Bypass the Antivirus – Practical Techniques to Evade Antivirus Software
6. Chapter 4: Bypassing the Dynamic Engine 7. Chapter 5: Bypassing the Static Engine 8. Chapter 6: Other Antivirus Bypass Techniques 9. Section 3: Using Bypass Techniques in the Real World
10. Chapter 7: Antivirus Bypass Techniques in Red Team Operations 11. Chapter 8: Best Practices and Recommendations 12. Other Books You May Enjoy

Antivirus bypass using binary patching

There are other ways to bypass antivirus software than using newly written code. We can also use a compiled binary file.

There are a few antivirus software bypass techniques that can be performed with already compiled code that is ready to run, even if it is detected as malware by antivirus engines.

We have used two sub-techniques while performing research toward writing this book:

  • Debugging / reverse engineering
  • Timestomping

Let's look at these techniques in detail.

Introduction to debugging / reverse engineering

In order to perform reverse engineering on a compiled file in an Intel x86 environment, we must first understand the x86 assembly architecture.

Assembly language was developed to replace machine code and let developers create programs more easily.

Assembly is considered a low-level language, and as such, it has direct access to the computer's hardware, such as the CPU. Using assembly, the...

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