Diobfuscator

A deobfuscator for java

If you are looking for v1 version of Diobfuscator, you can find it here

✅ How to run deobfuscator

If you want to use this deobfuscator, you need to start it from your IDE manually.

Prerequisites

Important: You need TWO different Java installations:

• Java 17 - Required for the project to compile and run
• Java 8 - Required for the sandbox (SSVM) to work properly

Instructions

1. Clone this repository and open it in IntelliJ
2. Make sure that you have selected Java 17 in Project Structure -> SDK
3. Install Java 8 if you don't have it already
4. Place your obfuscated jar inside the root project directory. For example in work/obf-test.jar
5. Navigate to class Bootstrap.java
6. In this class edit the deobfuscator configuration
   • inputJar - Your obfuscated jar file that you placed in step 4
   • transformers - Pick transformers that you want to run. You can find them in deobfuscator-transformers module.
7. Run this class manually from your IDE. You can use our pre-configured IntelliJ task named Bootstrap.

🔧 Contributing

Contributions are welcome! See CONTRIBUTING.md for a project introduction and some basics about java bytecode.

❓ FAQ

Q: Sandbox doesn't work / "rt.jar is required for sandbox to run" error

A: The sandbox requires rt.jar from Java 8 installation. The deobfuscator will try to auto-detect it, but if it fails:

• Make sure you have Java 8 installed
• You can manually set it via system property: -DrtJarPath="path/to/rt.jar"
• Or specify it in your Bootstrap configuration: .rtJarPath(Path.of("path/to/rt.jar"))
• Common rt.jar locations (may vary based on installation):
  • Oracle JDK 8: C:/Program Files/Java/jdk1.8.0_202/jre/lib/rt.jar
  • Eclipse Adoptium JDK 8: C:/Program Files/Eclipse Adoptium/jdk-8.0.462.8-hotspot/jre/lib/rt.jar

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