Starting Point: Shield, JuicyPotato and netcat

@R4ZZB33RY can you show us the contents of your shell.bat file? Everything else looks fine so I’d suspect something is wrong in that. Either that or you have something blocking the incoming connection on your end (firewall etc). Have you confirmed it works fine if you just run the shell.bat normally from the remote machine rather than trying to run it with js.exe as system?