Bauhinia CTF 2023: How to Stop Time

After four years of team formation, we organized our first edition of Bauhinia CTF last weekend. There are over 650 teams registered and over 200 teams scored. This year, I made one crypto challenge, How to Stop Time. I also coauthored a web/crypto challenge, Amnesia, with @chthollic_. This post is served as a short writeup of How to Stop Time, a crypto challenge with six solves during the contest period.