# CTF Writeup [![hackmd-github-sync-badge](https://hackmd.io/3o7V3Pa8T2q_rNLPvTUUUQ/badge)](https://hackmd.io/3o7V3Pa8T2q_rNLPvTUUUQ) 2021 --- - [WaniCTF'21-spring](https://hackmd.io/bHFMMX0PQIqhd6IjAv5Otg) - [SECCON ctf4b 2021]() - ###### tags: `CTF` `CRYPTO` `WRITEUP`