You can find some of the write-ups for the CTFs that I find interesting.

Zetta-CTF: 🥥

38 minute read ★★☆☆☆

The following challenge is from the Zetta-CTF PHP: Horrific Puzzle, during the VXCON in Hong Kong, 27 Apr - 28 Apr 2019. The challenge is named 🥥. btw no one...

HKCERT CTF 2021 Selected Write-ups

29 minute read ★★☆☆☆

Last Friday to Sunday there was the HKCERT CTF competition 2021 held by HKCERT. I am not allowed to join the competition (for obvious reasons). Nonetheless I...