Hi, I'm yeee3642.

A Taiwanese high school student focused on web security, reverse engineering, and crypto. I use this site to archive CTF writeups, competition notes, and the occasional security deep dive.

You can call me shaobingbujiadan. Most recent highlights include FhCTF 2026 rank 1, UTCTF 72nd all clear with TakeKitsune, AIS3 EOF Preliminary rank 3, and HITCON Final CTF 2025 rank 1 with Bamboo Fox.