A few days ago, HackTheBox updated the list of available retired boxes, deactivating some while re-activating others. One of the boxes they reactivated happened to be the second box in my list of OSCP-Like Linux systems, affectionately named “Brainfuck.” With such a monicker, I assumed this machine would be quite challenging, and based on the reviews by other users who had completed the challenge, it seemed my predictions were correct:

Brainfuck Difficulty

I also saw that Brainfuck was considered a more “CTF-Like” system than the boxes I’d targeted so far:

Brainfuck CTF-Like

Read the walkkthrough here!