Reverse Engineering 6: Reversing .NET with dnSpy
Learn Reverse Engineering and debugging for .NET programs written in C# and VB.NET using dnSpy
Updated on Apr, 2026
Language - English
IT and Software ,Network and Security,Reverse Engineering
Lectures -16
Resources -17
Duration -1.5 hours
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Course Description
If you are interested in reverse engineering and want to learn how to decompile and debug .NET programs, then this course is for you. In this course, I will introduce you to the exciting world of reversing and, in particular, reverse engineering .NET programs.
You will learn how to use dnSpy, de4dot, and UnconfuserEx tools to reverse engineer .NET programs written in C# and VB.NET. You'll dive deep into debugging, memory dumping, reversing jumps, and modifying instructions.
What you will learn:
What are .NET programs
Install dnSpy
Patching with dnSpy
Serial Phishing
Creating Keygens
.NET software protection
De-obfuscation
Unpacking and dumping .NET assemblies
How to protect .NET programs from being reversed
and more...
We will practice reversing on special programs called crackme's that I have written for you, ensuring hands-on experience.
In this comprehensive course on reverse engineering .NET programs, you'll learn to decompile and debug using powerful tools like dnSpy, de4dot, and UnconfuserEx. The course covers key techniques such as patching, serial phishing, creating keygens, and unpacking .NET assemblies, while also teaching you how to protect your own software from reverse engineering. Hands-on practice with specially designed crackme programs ensures practical experience.
Goals
Reverse Engineering
Decompiling .NET programs
Debugging .NET programs using dnSpy
Obfuscation and De-obfuscation techniques
Serial Phishing
Creating keygens
and more...
Prerequisites
C# would be an advantage but not compulsory.
Windows PC.
Curriculum
Check out the detailed breakdown of what’s inside the course
Introduction
1 Lectures
-
Introduction and Welcome
01:48
01:48
Introduction to .NET Programs
1 Lectures
Installing dnSpy
1 Lectures
Introduction To CrackMe 18
1 Lectures
Patching With dnSpy
1 Lectures
Serial Phishing With dnSpy
1 Lectures
Creating a C# Keygen
1 Lectures
Installing Visual Studio To Create A GUI Keygen
1 Lectures
Creating a GUI Keygen in C#
1 Lectures
Introduction to .NET Software Protection
1 Lectures
Installing .NET Reversing Tools
1 Lectures
Protecting .NET Software With Confuser 1.9
1 Lectures
Deobfuscating Confuser 1.9
1 Lectures
Protecting .NET Software With ConfuserEx
1 Lectures
Unpacking ConfuserEx
1 Lectures
Resources For Further Study
1 Lectures
Instructor Details
Cracking Lessons
Cracking Lessons is a passionate and student-focused instructor dedicated to making learning simple, practical, and engaging. With a clear and structured teaching style, they break down complex concepts into easy-to-understand lessons, helping learners build strong foundations and confidence. Whether you're just starting out or looking to sharpen your skills, Cracking Lessons focuses on real understanding rather than rote learning—making education both effective and enjoyable.
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