2019

• HITCON CTF 2019 Quals: Reverse - EmojiVM
• HITCON CTF 2019 Quals: Reverse - CoreDumb
• HITCON CTF 2019 Quals: Pwn - Crypto in the shell
• HITCON CTF 2019 Quals: Misc - heXDump
• TokyoWesterns CTF 5th 2019: Web - j2x2j
• TokyoWesterns CTF 5th 2019: Reverse - meow
• TokyoWesterns CTF 5th 2019: Reverse - Holy Grail War
• TokyoWesterns CTF 5th 2019: Pwn - printf

2018

• GoogleCTF 2018 Quals: Web - BBS

2017

• 0CTF 2017 Quals: Crypto challenges
• 0CTF 2017 Quals: Choices (reverse, 297pts)
• 0CTF 2017 Quals: UploadCenter (pwn, 523pts)

2016

• HITCON 2016 Quals: %%% (web100)
• HITCON 2016 Quals: Omegamon (rev400)
• HITCON 2016 Quals: Let's Decrypt (crypto100)
• HITCON 2016 Quals: Handcrafted pyc (rev50)

2015

• 9447 CTF 2015 Quals
• HITCON 2015 Quals: Unreadable
• HITCON 2015 Quals: Simple
• HITCON 2015 Quals: Rsabin
• HITCON 2015 Quals: Risky
• HITCON 2015 Quals: Poooooooow
• HITCON 2015 Quals: Piranha Gun
• HITCON 2015 Quals: Phishingme
• HITCON 2015 Quals: Nanana
• HITCON 2015 Quals: Matrix
• HITCON 2015 Quals: Hardtosay
• HITCON 2015 Quals: Giraffes Coffee
• HITCON 2015 Quals: Fuzzleng
• HITCON 2015 Quals: Flagnotfound
• HITCON 2015 Quals: Blinkroot
• HITCON 2015 Quals: Babyexploit
• ASIS 2015 Finals: Ultra compression (web125)
• ASIS 2015 Finals: Strange (for150)
• ASIS 2015 Finals: Sniff3r (pwn200)
• ASIS 2015 Finals: Simple (crypto75)
• ASIS 2015 Finals: Shop-2 (pwn300)
• ASIS 2015 Finals: Shop-1 (pwn100)
• ASIS 2015 Finals: RSASR (crypto300)
• ASIS 2015 Finals: png2ppm (pwn450)
• ASIS 2015 Finals: Particles (for175)
• ASIS 2015 Finals: Myblog (web150)
• ASIS 2015 Finals: meow meow (misc75)
• ASIS 2015 Finals: MBTI (for200)
• ASIS 2015 Finals: License (rev125)
• ASIS 2015 Finals: Impossible (web225)
• ASIS 2015 Finals: Honeywall (crypto250)
• ASIS 2015 Finals: Giloph (crypto300)
• ASIS 2015 Finals: Flag Hunter (misc75)
• ASIS 2015 Finals: Fake (rev150)
• ASIS 2015 Finals: Exchange (rev200)
• ASIS 2015 Finals: Example flag (trivia1)
• ASIS 2015 Finals: Calm down (trivia75)
• ASIS 2015 Finals: calcexec II (pwn250)
• ASIS 2015 Finals: calcexec I (pwn200)
• ASIS 2015 Finals: Bodu (crypto175)
• ASIS 2015 Finals: Big Lie (for100)
• ASIS 2015 Finals: ASIS Hash (rev150)
• ASIS 2015 Finals: 10-sed (crypto175)