Java Instrumentation Agent for modifying classes at runtime.
Maybe helpful at AWD competitions.
Write your patches in src/main/java/patch and run mvn clean package to build the agent jar.
You can learn how to write patches by reading the example patches in src/main/java/patch.
Compile the agent with mvn clean package and you will get jaragent.jar.
Then run your target program with -javaagent:jaragent.jar to apply the patches.
Before patching, when running the vuljava.jar in the example
Attacker can execute commands at 'http://127.0.0.1:8281/test?cmd=id'
After patching, the command execution will be blocked and return 'Patched'
And there will be a new route 'http://127.0.0.1:8281/new' which returns 'New Route'
MIT License