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yck1509/confuserex

Analysis updated 2026-07-03

3,750C#Audience · developerComplexity · 3/5LicenseSetup · moderate

TLDR

ConfuserEx is a code-protection tool for .NET apps that scrambles names, encrypts methods, and blocks reverse-engineering, note: the project is discontinued, but active forks exist.

Mindmap

mindmap
  root((ConfuserEx))
    Protection types
      Symbol renaming
      Control flow scrambling
      Method encryption
      String and resource encryption
    Anti-analysis
      Anti-debugger
      Anti-tamper
      Memory dump blocking
    Other features
      Proxy reference hiding
      Dependency embedding
      Output compression
      Plugin API
    .NET support
      Framework 2.0 to 4.5
      WPF and BAML
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What do people build with it?

USE CASE 1

Obfuscate a compiled .NET desktop app before distributing it to prevent competitors from copying your code.

USE CASE 2

Encrypt string constants and resources in a .NET application to hide API keys or license logic.

USE CASE 3

Add anti-debugger and anti-tamper protections to a .NET game or tool.

USE CASE 4

Embed dependencies into a single output file so end users cannot extract individual DLLs.

What is it built with?

C#.NET FrameworkWPF

How does it compare?

yck1509/confuserexxcharts-team/xchartsunity-technologies/postprocessing
Stars3,7503,7443,741
LanguageC#C#C#
Setup difficultymoderatemoderateeasy
Complexity3/53/52/5
Audiencedeveloperdeveloperdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 30min

Project is discontinued, use a community fork for active bug fixes and newer .NET support.

Open source, free to use and modify, including for commercial software you want to protect.

In plain English

ConfuserEx is a protection tool for .NET applications, the kind of software that runs on Windows using Microsoft's .NET framework. Its purpose is to make it harder for other people to reverse-engineer your compiled application, read its code, or tamper with how it works. The tool works by transforming the compiled output of a .NET program before you distribute it. It supports several categories of protection. Symbol renaming changes the internal names of classes, methods, and variables into meaningless strings so that anyone who opens the file in a decompiler sees garbled identifiers instead of your original code structure. Control flow obfuscation scrambles the logical order of the code so that following its execution path becomes much harder to trace. Method encryption wraps individual functions so they cannot be read or modified at rest. Resource and constant encryption covers strings and other embedded values. There are also protections against debuggers, profilers, and memory dumping tools that analysts use to inspect running programs. Additional features include reference hiding through proxy methods, the ability to embed dependencies so they cannot be extracted separately, output compression, and a plugin API that lets developers extend the tool's behavior. ConfuserEx supports .NET Framework versions from 2.0 through 4.5 and also handles WPF and BAML projects, which use a particular UI technology within the .NET ecosystem. It is used from the command line by pointing it at a project file that describes what to protect and how. The project file format is documented separately in the repository. An important note from the maintainer: this project is discontinued and no longer actively maintained. The README links to a GitHub issue listing actively developed forks for anyone who needs ongoing support.

Copy-paste prompts

Prompt 1
How do I create a ConfuserEx project file to obfuscate a .NET 4.5 application from the command line?
Prompt 2
What is the difference between symbol renaming, control flow obfuscation, and method encryption in ConfuserEx?
Prompt 3
Show me a minimal ConfuserEx config that renames all symbols and encrypts strings in a WPF project.
Prompt 4
ConfuserEx is discontinued, which actively maintained fork should I use in 2024 and what has changed?

Frequently asked questions

What is confuserex?

ConfuserEx is a code-protection tool for .NET apps that scrambles names, encrypts methods, and blocks reverse-engineering, note: the project is discontinued, but active forks exist.

What language is confuserex written in?

Mainly C#. The stack also includes C#, .NET Framework, WPF.

What license does confuserex use?

Open source, free to use and modify, including for commercial software you want to protect.

How hard is confuserex to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is confuserex for?

Mainly developer.

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