Woah, what a box…user was really a hard walk. I know most of the stuff like D** z*** t******* and how to handle that with the web server, but I was completely ignoring other ports/protocols.
After I puzzled all together, it worked. Getting root was also something I couldn’t have solved without this forum.
Thanks a lot for this one, learned a lot and was fun (in the end). PM if you need a push in the right direction.