.NET-Obfuscator

.NET Obfuscator is a tool that is used to protect .NET applications from reverse engineering.

• This is done by transforming the original .NET code into a form that is difficult to understand, making it hard for attackers to decompile the code and understand how it works.

• This can help to prevent the theft of intellectual property and also protect against potential security vulnerabilities.

• Obfuscation can also help to reduce the size of the code, which can improve the performance of the application.

Here is an example of a simple C# program that calculates the factorial of a given number:

using System;

namespace FactorialCalculator
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Enter a number:");
            int num = int.Parse(Console.ReadLine());
            int factorial = 1;

            for (int i = 1; i <= num; i++)
            {
                factorial *= i;
            }

            Console.WriteLine("The factorial of {0} is {1}", num, factorial);
        }
    }
}

To obfuscate this code, a .NET Obfuscator would transform it into something like this:

using System;

namespace XZkxcX
{
    class XxXXx
    {
        static void XxXXX(string[] XxxxX)
        {
            Console.WriteLine("Enter a number:");
            int XxXx = int.Parse(Console.ReadLine());
            int XXXXXXX = 1;

            for (int XxXX = 1; XxXX <= XxXx; XxXX++)
            {
                XXXXXXX *= XxXX;
            }

            Console.WriteLine("The factorial of {0} is {1}", XxXx, XXXXXXX);
        }
    }
}

As you can see, the obfuscated code is much harder to understand and follow, making it difficult for someone to reverse engineer the original code.

• Open Source
• Free
• Freemium
• Paid

Open Source

• Arya - Arya is a simple obfuscator for .NET binaries.
• AsStrongAsFuck - A console obfuscator for .NET assemblies.
• BasicProxyObfucator - a very basic proxy obfuscator based on dnlib
• BitMono - An open-source, free protector for Mono
• ConfuserEx - An open-source, free protector for .NET applications.
• cil-examining - A .NET Framework (.NET Core in the future) obfuscator. Owner is currently out sick thus working on project is stopped.
• Cheap Obfuscator - a pretty bad obfuscator made to learn
• dotNetObfuscator - Обфускатор строки для C#
• DarkFuscator - Code obfuscator for .NET framework programs. Outdated in 2016, but was very functional in 2010/2011.Uses the Mono.Cecil library for interacting with .NET assemblies.
• Denvelope - NET Obfuscator
• DotNetPatcher - DotNetObfuscator
• Goldfuscator - A fork of the original SimpleObfuscator project, made for training.
• JIEJIE.NET - An open source tool to obfuscation .NET assembly file, help you protect your copyright. small,fast and powerful.
• Krawk Protector - .NET Obfuscator and Protector
• KoiVM - Virtualization made for .NET using ConfuserEX
• lookatme - NET Obfuscator for Studying purpose.
• LoGic.NET - A more advanced free and open .NET obfuscator using dnlib.
• MdCrypt - [WIP] A next-generation protector for .NET applications (.NET Framework, .NET Core, and more)
• MemeVM - A small virtualizer for .NET which works together with ConfuserEx
• MindLated - .net obfuscator using dnlib
• NET-Obfuscator - Simple .net obfuscator using Mono Cecil
• NetRenamer - Simple tool to obfuscate/rename .NET module's methods, fields, classes and more using AsmResolver.
• Noisette - An Obfuscator for .NET assembly
• obfuscatus - a .NET obfuscator based on mono cecil
• Obfuscord - Obfuscates A file Through Discord as a Bot using Discord.Net Api
• Obfuscar - Open source obfuscation tool for .NET assemblies
• Obfuscator-Demonstration - A simple obfuscator demonstration using dnlib
• OctopusObfuscator - Basic obfuscator for .NET
• Panda-Obfuscator - PandaObfuscator an simple Obfuscator, free, OpenSource for .Net Applications
• PAOfuscator - Obfuscator für Paradise.de
• SimpleObfuscator - Simple obfuscator
• SourceCodeObfuscator - C# source code obfuscator
• SpecterObfuscator - This Application will obfuscate your .NET Assembly
• Sugar-Guard - Sugar Guard
• Unikod - Text styling & obfuscation library for C#
• UnmanagedString - A simple tool for converting strings to unmanaged methods using AsmResolver.
• vot4cs - A Virtualization Obfuscation Tool for C# program
• VaporObfusactor - VaporObfuscator is an obfuscator for .net made with dnlib
• ZenFuscator - Obfuscator To Protect .NET Assemblies From Being Reverse Engineered.
• Z00bfuscator - Z00bfuscator is the simple, open-source, cross-platform obfuscator for .NET Assemblies built on .NET Core

Free

• BitHelmet - BitHelmet obfuscator protects your .NET Portable Executables
• Guardship-.NET-Protector - Guardship .NET Protector is a development software that helps to protect the executable file of .NET application by making its code unreadable for MSIL disassemblers.
• Orange Heap obfuscator - free and efficient way to protect your .NET software
• Phoenix Protector - .NET Obfuscator & Protector
• Yano - Yano is an advanced obfuscator for Microsoft .NET applications

Freemium

• Agile- Agile.NET, Powerful Code Protection, Obfuscation, and Licensing Solution for your .NET Apps
• Aldaray Rummage Obfuscator - Tie your code into knots and make the hackers cry
• AppFuscator - Inteligence algorithm provide your application powerful protection!
• ArmDot - Protection, software licensing tool, and obfuscator for C# and .Net with support of serial keys and files embedding
• Babel - Protect your software against reverse engineering to safeguard the intellectual property of your code
• BoxedApp - Import and virtualize ActiveX, Flash and .Net runtime • Rich SDK for developers • Create custom packers • Supports both 32-bit and 64-bit applications • Virtual file system and registry
• Crypto - Powerful Obfuscation & Code Protection For .Net That Actually Works!
• CSharpObfuscator - CSharp Obfuscator protects your .NET application code through obfuscation transforms, while maintaining debugging abilities for quality assurance testing.
• DeepSea - DeepSea Obfuscator makes obfuscation of your .NET assemblies an intuitive and integrated part of your product development.
• Dotfuscator - Dotfucator's .NET obfuscation and runtime checks have protected thousands of apps for over a decade.
• Eazfuscator - Eazfuscator.NET protects intellectual property ingrained in software, increasing commercial profitability and allowing to keep the advantage over the competition.
• Enigma Protector - A professional system for licensing and protecting executable files for Windows.
• ILProtector - ILProtector is a protector for .NET applications. ILProtector is designed to protect intellectual property of the software.
• IntelliProtector - IntelliProtector .Net Obfuscator is excellent Free tool for your IntelliProtector .Net projects.
• MancoSoftware - Manco .NET Licensing System is the powerful licensing and copy protection software for .NET Windows Forms, WPF, WCF, WWF and ASP.NET applications, controls and components.
• netshrink - netshrink is an exe packer aka executable compressor, application password protector and virtual DLL binder for Windows & Linux .NET applications.
• NET Reactor - NET Reactor is a powerful .NET code protection and software licensing system which completely stops any decompiling.
• Skater .NET Obfuscator - Rustemsoft proposes Skater .NET Obfuscator, an obfuscation tool for .NET code protection. It implements all known software protection techniques and obfuscation algorithms.
• SmartAssembly - Protect your .NET code and IP with SmartAssembly
• StrongVM - StrongVM is a virtualizing protector for .NET applications.
• Spices - Spices.Net Obfuscator is a .Net code obfuscation, protection and optimization tool that offers the wide range of technologies to completely protect your .Net code and secure your data.
• VMProtect - VMProtect protects code by executing it on a virtual machine with non-standard architecture that makes it extremely difficult to analyze and crack the software. Besides that, VMProtect generates and verifies serial numbers, limits free upgrades and much more.

Paid

• Cyphor - Cyphor is more than just an obfuscator. Cyphor is the best, fastest, and most reliable obfuscation protection tool to work with.
• DNGuard HVM - Advanced .NET Code Protection and Obfuscation Technology
• DotNetSafer - Increase the security of your software, reduce costs and save time with the tools that dotnetsafer offers you to protect your intellectual property and guarantee the integrity of your .NET and .NET Core applications.
• Obfuscator.NET 2009 - Protect your .NET assembly
• PV Logiciels dotNet Protector - PV Logiciels dotNet Protector is a powerful .NET code protection system that prevents your assemblies from being decompiled.
• SEEUNSHARP - Have a sophisticated .NET solution?And very curious competitors?Got something valuable to hide?Take action and protect your investment!