Rooted. I don’t like those CTF-ish box.
I would not recomand this one to beginners on this website.
Rooted the BoF way, I am super curious to know other ways to root the box. Feel free to PM about that, I would be glad to read your way of rooting it.
Tips for the BoF :
ldd --version will be your friend (then → https://libc.blukat.me/ – scroll down)
If you are stuck, read WU about other standard ret2libc. You can PM me about that also.
Tips for user part :
Google for esoteric languages 