DEF CON 21 CTF Quals

This year, DEF CON 21 CTF Quals were hosted by Legitimate Business Syndicate. Really nice organization and, as promised, no more « guessing » challenges! Quals ended at 02:00 june 17 morning… and Routards team finished 6th and thus are qualified for the final CTF in Vegas!
Among classical sploits, pwning and reverse categories, there were web-based and programming challenges, which were not so difficult…
 

DC21_DashBoard
 

“3dub”, web-based challenges

At present, some challenge websites are still playable!

“0x41414141”, exploitation

  • (01) bitterswallow
  • (02) blackbox
  • (03) ergab
  • (04) annyong
  • (05) yolo

“\xff\xe4\xcc”, shellcode

  • (01) incest
  • (02) blackjack
  • (03) linked (writeup to come)
  • (04) penser
  • (05) lena

“OMGACM”, guerilla programming

  • (01) pieceofeight
  • (02) diehard
  • (03) grandprix (writeup to come)
  • (04) bob
  • (05) passweird

“gnireenigne”, reverse engineering

  • (01) policebox
  • (02) thyself
  • (03) musicman
  • (04) timecubed
  • (05) tastycloud

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