Iris CTF 2024

Placement: #88/1207

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Thoughts:

Turns out I’m a speed demon in the first few hours of the CTF, because I was top ~10 after that despite starting like an hour late. Still ended up placing quite well though, mainly because of my two solves in misc that made up almost half of my points (Sir Scope and Name that song 3). Integral Communication was also a cool crypto challenge that showed that my CryptoHack grinding actually paid off!

Writeups

• Baby Charge
  [50] <crypto/> <chacha20/> <oracle/>
• Integral Communication
  [197] <crypto/> <aes/> <aes-cbc/> <oracle/> <json/>
• Name That Song 3
  [435] <misc/> <reverse-audio-search/>
• Sir Scope
  [280] <misc/> <brute-force/>
• Wheres Skat
  [50] <network/> <osint/> <wifi/>
• Away On Vacation
  [50] <osint/> <instagram/>
• Czech Where
  [50] <osint/> <reverse-image-search/>
• Personal Breach
  [50] <osint/> <instgram/> <linkedin/> <facebook/>
• Insanity Check
  [50] <pwn/> <buffer-overflow/> <ret2win/>
• Rune Whats That
  [50] <rev/> <go/>
• The Johnsons
  [50] <rev/> <logic/>
• Whats My Password
  [50] <web/> <sqli/> <union/>