Very nice machine! I’ve learned a lot!
Getting a shell isn’t very difficult, you just have to enumerate the server very well.
After the shell getting user is simple as tricky because there is a C** part and to solve it you have to look around very well.
For the root part, I’ve followed so many rabbit hole but in the end it’s more simple that it looks.
Thanks to @PavelKCZ and @tabacci that have helped me!
If you need assistance just PM me.