Rooted. Thanks to my bros!!!
This is one of the boxes that if you know the technology, you will know what to do but if you don’t you will be bashing your head against the keyboard.
Can only say -
Initial foothold - typical enum. Try adding '… and look at Frey’s Comment on 24 Sep.
On Privesc - Hint in first folder you see, just dig.
Goodluck and all the best!!!