UT CTF 2024

Placement: #8/854

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Thoughts:

Best CTF yet with my team reCAPTCHA the Flag! I completed all of the crypto except one this CTF. To be honest, the crypto this CTF was easy (except for crypto/Forgery, which was rev + crypto, and I could not get past the rev part). As a result, I ended up contributing a lot to the other categories, mainly misc and forensics. misc/CCV a pretty interesting and unique challeng. forensics/Gibberish, on the other hand, took me so long… (I started 11 pm and stayed up until 5 am working on it). But overall, quite a nice CTF, and high quality challenges. And of course an amazing result for the team :)

Writeups

• Beginner Anti Dcode.fr
  [100] <crypto/> <caesar/>
• Cryptordle
  [772] <crypto/> <math/>
• Numbers Go Brr 2
  [831] <crypto/> <random/> <aes/> <oracle/>
• Numbers Go Brr
  [481] <crypto/> <random/> <aes/> <oracle/>
• Rsa 256
  [100] <crypto/> <rsa/>
• Simple Signature
  [908] <crypto/> <signature/> <forgery/>
• Gibberish
  [987] <forensics/> <network/> <stenography/>
• Ccv
  [912] <misc/> <credit-cards/>