What a journey! But it was definitely worth it! Great job @xct and @jkr!
And thanks to @TheWorld and @Neo2SHYAlien for your nudges.
Some additional hints to what is already found here:
foothold: A single byte can make a huge difference. Don’t be a private member like I did first but a public one.
User: usual enum
Root: After user you’ll pretty instantly find something juicy which is the way forward. Check with google how this thing may relate to linux authentication and how you can leverage that for your success.
As always: PM for hints, this box is a beast 