Like in 2021 and 2022, I contributed some challenges for Firebird’s internal CTF, which are from the Hong Kong University of Science and Technology. This time I wrote three crypto challenges: Randomsum, Shelter and Threerider. There were 24 teams participating. There were three solves for Randomsum, while Shelter and Threerider were unsolved during the CTF. 🎉 Thank you! Kudos to @LifeIsHard for reading the write-up and giving me comments (including those erratas) so that I could improve ...
