Final Scoreboard https://github.com/craig/MCH2022-CTF/blob/main/scoreboard.png
Writeup collection: https://watchdog.notion.site/MCH-CTF-May-Contain-Hackers-2b36d2a891ed441abadd75b9d2ef3ec9
While several of these writeups are done by me, please check the individual files for credit. :)
Crypto Machine: https://www.youtube.com/watch?v=BjkOwSQ3wk8
qEXMRY^7: https://imp.ress.me/blog/2022-07-26/mch-2022-crypto/#qexmry-7
Squaring Off: https://imp.ress.me/blog/2022-07-26/mch-2022-crypto/#squaring-off & https://duksctf.github.io/2022/07/25/MCH22-squaringoff.html
Sharing is Caring: https://imp.ress.me/blog/2022-07-26/mch-2022-crypto/#sharing-is-caring
Smartblockchain: https://flag-poisoning.fr/writeup/smartblockchain-mch-2022/
Curvy: https://github.com/craig/MCH2022-CTF/blob/main/curvy-p.py (incomplete; only part 1, binary search for p implemented by craig, failed to determine a and b unfortunately)
Curvy: https://duksctf.github.io/2022/07/25/MCH22-curvy.html
Crypto machine 02: https://github.com/craig/MCH2022-CTF/blob/main/crypto_machine_02.txt
HipsterProgramming: https://github.com/craig/MCH2022-CTF/blob/main/HipsterProgramming.txt
rockpaperlizardspock: https://github.com/craig/MCH2022-CTF/blob/main/rockpaperlizardspock.txt
pwn me if you can (badge challenge): https://twitter.com/__spq__/status/1552386564759687175 (hints not a complete writeup)
pwn me if you can (badge challenge): https://github.com/wallabythree/mch2022-hack-me-if-you-can (full writeup)
pwn me if you can (badge challenge): https://dojoe.github.io/hackmeifyoucan/ (another full, way longer writeup)
PUPA: https://github.com/craig/MCH2022-CTF/blob/main/pupa
Screensaver: https://github.com/craig/MCH2022-CTF/blob/main/screensaver.txt
Encrypted USB: https://github.com/craig/MCH2022-CTF/blob/main/encrypted_usb.txt
North Korean Needle: https://github.com/craig/MCH2022-CTF/blob/main/north_korean_needle.txt
Extensions: https://www.youtube.com/watch?v=kHwdguVWJJE
foraiur: https://github.com/craig/MCH2022-CTF/blob/main/forauir
Coinflip: https://gist.github.com/betrisey/45882ce20c743c8e2fadff88899030e1
Coinflip: https://github.com/craig/MCH2022-CTF/blob/main/coinflip.sh
Secure Router: https://github.com/craig/MCH2022-CTF/blob/main/secure_router.txt
Captcha: https://github.com/craig/MCH2022-CTF/blob/main/captcha.txt
Cat Lovers: simple LFI, curl https://catlovers.ctf.zone/image.php?file=../../../../etc/passwd | grep catlover | cut -d: -f5
For starters: https://www.youtube.com/shorts/58NhToPKro8
Perlgolf: https://github.com/craig/MCH2022-CTF/blob/main/perlgolf
Rogue Wifi: https://github.com/craig/MCH2022-CTF/blob/main/rogue_wifi.txt
Access Control 1: https://github.com/craig/MCH2022-CTF/blob/main/accesscontrol1.txt
Access Control 2: https://github.com/craig/MCH2022-CTF/blob/main/accesscontrol2.txt
Locked Locks 1: A lock in a white case, needs lockpicking.
Locked Locks 2: A lock in a black case, needs lockpicking and is hard, due to a security pin.
Lost Combination: A simple shimming challenge. https://en.wikipedia.org/wiki/Shim_(lock_pick)