TSG CTF

Challenges List

Name	Genre	Difficulty	Author	Solves
OPQRX	Crypto	easy	@kcz146	10
OMEGA	Crypto	easy	@kcz146	5
Millionaire Girl	Crypto	hard	@hakatashi	3
Curved	Crypto	med	@hakatashi	4
Obliterated File	Forensics	easy-med	@taiyoslime	90, 61 (Again)
Sanity Check	Misc	warmup	@hakatashi	404
plzseed	Misc	easy-med	@hakatashi	1
Recorded	Misc	med	@satos	3
Super Smash Bros	Pwn	med	@moratorium08	11
Capacity Oriented Vector	Pwn	med	@moratorium08	6
Odd Multiplier	Pwn	easy	@moratorium08	10
STLC	Pwn	hard	@satos	0
Eso VM	Rev	med	@satos	2
ffi	Rev	med	@kurgm	19
Harekaze	Stego	med	@hakatashi	8
0000000000000000	Stego	hard	@kurgm	0
BADNONCE	Web	med	@lmt_swallow	15 (part1), 8 (part2)
RECON	Web	med	@lmt_swallow	3
Secure Bank	Web	easy	@kcz146	10

External Write-ups

Top-teams

• TokyoWesterns: https://westerns.tokyo/writeups/tsgctf2019.html
  • Super Smash Bros, Odd Multiplier, Capacity Oriented Vector, BADNONCE, Secure Bank, RECON, OPQRX, OMEGA, Millionaire Girl, Curved, Harekaze, Obliterated File, Obliterated File Again, ffi, Eso VM, Recorded, plzseed
• hxp: https://hackmd.hxp.io/HZe6uFM5SK2QV-rue_5FSQ
  • Super Smash Bros, Odd Multiplier, OPQRX, OMEGA, Millionaire Girl, Curved, Harekaze, Obliterated File Again, ffi
• NaruseJun (English): https://hackmd.io/s/HJhnHwTiE
  • BADNONCE Part1, Secure Bank, RECON, OPQRX, OMEGA, Harekaze, Obliterated File, Obliterated File Again, ffi, Recorded
• NaruseJun (Japanese): https://hackmd.io/s/rk-iwwpo4
  • BADNONCE Part1, Secure Bank, RECON, OPQRX, OMEGA, Harekaze, Obliterated File, Obliterated File Again, ffi, Recorded

Official

• [English] https://gist.github.com/satos---jp/e778ac2f3c58cf3f56e8f2e37fd69b84
  • STLC
• [English] https://gist.github.com/kurgm/b9aeb8110a3458c46019ea2679cc8159
  • 0000000000000000
• [Japanese] http://taiyoslime.hatenablog.com/entry/2019/05/05/164213
  • Obliterated File, Obliterated File Again

Unofficial

• [Japanese] https://qiita.com/kusano_k/items/95667153509be6e45ef2
  • Survey, Sanity Check, Odd Multiplier, BANONCE Part1/Part2, Secure Bank, OPQRX, OMEGA, Curved, Harekaze, 0000000000000000, Obliterated File, Obliterated File Again, ffi, Recorded
• [Japanese] https://qiita.com/reatoretch/items/b48c2f662e322dcb3a9e
  • Obliterated File, Obliterated File Again, Harekaze
• [Japanese] https://graneed.hatenablog.com/entry/2019/05/05/162019
  • Obliterated File, Obliterated File Again
• [Japanese] https://graneed.hatenablog.com/entry/2019/05/05/161950
  • Secure Bank
• [Japanese] https://st98.github.io/diary/posts/2019-05-05-tsg-ctf.html
  • Obliterated File, Obliterated File Again, BADNONCE Part1/Part2, RECON
• [Japanese] https://ptr-yudai.hatenablog.com/entry/2019/07/01/143652#-TSG-CTF
  • Super Smash Bros
• [English] https://amccormack.net/2019-05-05-obliterated-file-tsg-ctf.html
  • Obliterated File, Obliterated File Again
• [English] https://amccormack.net/2019-05-05-secure-bank-tsg-ctf.html
  • Secure Bank
• [English] https://github.com/Hong5489/TSGCTF2019
  • Obliterated File, Obliterated File Again