Fun box 
The enumeration part was interesting, not sure if I did it the intended way, I ended up using a rather ugly method but at the end of the day, I got what I needed !
The root part got me confused. Everything was very slow and the box behaved strangely, but I don’t know if it came from the network or not. I used the famous tool because none of what I tried manually worked, if anyone managed to get it working without any external tools, I’d like to hear about it !
Thank you @pwnmeow