compile-decompile

You may find "notes.txt", "note2.txt" file on the server that provides anonymous access during enumeration.

Decompile Java file

1. Extract java file by right-click on it.

2. Search for a port "8000" inside java file

3. ls fatty-client\ -recurse | Select-String "8000" | Select Path, LineNumber | Format-List

Decompiled java application

jar -cmf .\META-INF\MANIFEST.MF ..\fatty-client-new.jar *

Java decompile/compile tool

http://java-decompiler.github.io/

Compile ".Java" file

javac -cp fatty-client-new.jar fatty-client-new.jar.src\htb\fatty\client\gui\ClientGuiTest.java

HTB module: https://academy.hackthebox.com/module/113/section/2164