- ASIS 2018 CTF: Yunnyit (crypto)
- DEF CON CTF Qualifier 2018: smcauth (crypto/fpga)
- Google Capture The Flag 2018 (Quals): bookshelf (web/crypto)
- WCTF 2018: rsa (crypto/rev)
- Midnightsun CTF 2019 (Quals): Open-gyckel-krypto (crypto), Tulpan257 (crypto), Polyshell (pwn)
- PlaidCTF 2019: R u SAd? (crypto)
- backdoorctf 2021: beyond the mountain (crypto)
- DamCTF 2021: md5flow (crypto/pwn)