HackMe Hardware Challenges - Nullcon Berlin CTF 2024 The 6 challenges below use the same PCB. Update March 16, 2024: I forgot another fix we had to do for the first challenge + added solution to the last HackMe challenges. HackMe Fix the Board (5 solves) The PCB we are given does not work as such: the screen does not light up and the device does not boot correctly. We’ve got to repair it.

Advent of Code is a coding competition, with one new challenge per day during December. I started writing the core of my own solutions, then I realized this wouldn’t be very interesting because (1) my own code is often very naive compared to the best ones, (2) the article was starting to get very long. Instead, I will focus only on things I learned or already knew but experienced doing the challenges.

BruCON 2023 CTF Many challenges, many flags in this CTF. Our team happily ranked 6th / 64. Positive aspects: It is really interesting to have a full document with network and architecture diagrams of what looks like a real beer brewery. It makes the challenges feel real and I appreciated the time the organizers took to prepare such a scenario I enjoyed the PLC challenges where we used and hacked into real PLCs.