For the last step of root, it seems like it can be done by combining some readily available tools on a typical Kali box, or you can roll your own (trying not to give a spoiler here) – I’ve gotten this as a hint. I have already tried the former and now I’m trying the latter. I have my own custom solution that should work, but seemingly due to the intricacies of a** I get some weird behavior based on what I use as a “backend”.
Could someone that also wrote their own solution perhaps give me a message so I can discuss my solution with them and perhaps learn why mine doesn’t work yet?
I also had some weird behavior reaching a certain port earlier on the box and I’m starting to wonder if this is related to my problems with the root part.
Edit: Got root. There is no need to write your own custom solution for the p**** server part like I did, it only complicated everything a lot. Thanks to those that decided to help me!