St3ix Obfuscator

A Java bytecode obfuscator that transforms JAR files to make reverse engineering harder. Class names, numeric constants, booleans, strings, and array dimensions are obfuscated while preserving runtime behavior.

Requirements

• Java 17 or later
• Gradle (wrapper included)

Quick Start

# Build the obfuscator (JAR + scripts)
./gradlew dist    # → build/dist/

# Obfuscate a JAR (output in build/dist/Obfuscate/)
java -jar build/dist/st3ix-obfuscator-v*.jar -i myapp.jar -o myapp-obfuscated.jar

# Run the result
java -jar build/dist/Obfuscate/myapp-obfuscated.jar

Windows: Use gradlew.bat for building. For the GUI: run run.bat from build/dist/ or double-click the JAR.

Features

Output

Obfuscated files are saved to the Obfuscate/ folder in the obfuscator JAR directory. Existing files with the same name are overwritten.