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Capture the Flag

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DEF CON 22 CTF Quals Roundup!

The DEF CON 22 CTF Qualifiers are in the books. Challenges were faced, and bested. Points were accumulated. Bedtimes were missed. It’s all over but the paperwork.

So here’s a roundup of writeup links. IF you participated, read and see how other people approached the same problems. If you didn’t, read and get an idea of how the CTF process works and consider signing up next time. You lose 100% of the CTFs you don’t enter.

If you enter, you could still lose 100%. That’s just math. But you’ll have a story. An awesome, glorious, highly technical story to share with the tiny slice of humanity who can understand this sort of thing.

There’s also a bonus link to a GitHub collection that looks like it might end up pretty comprehensive.

CTF temple

On your mark... Get set...

T minus 3 hours - DEF CON 22 CTF Qualifications are upon us! To read up on the setup for this year, you can check out the Legitimate Business Syndicate blog:

The road to glory begins here. We at DEF CON applaud all of the brave warriors who've accepted the CTF challenge. Godspeed. May the odds be ever in your favor.

Keep calm and play ctf image

DEF CON 22 CTF: Registration is Open!

Good news, everyone!

Registration for the DEF CON 22 CTF season is open! To accomodate international competitors, the qualifying weekend has been moved to May 17-19.

It is time to assemble your champions. Sharpen them to a fine point. The doors to the arena open May 17. Fortune looks kindly upon boldness and skill. Failing those, she also seems pretty okay with treachery and subversion.

The information you require can be found at . You can register at

Step forward and meet your destiny.

Legitimate Business Syndicate image of hackers at CTF

DEF CON 22 Capture the Flag
Pre-Qualification Events!

Continuing the tradition of recognizing strong performance in Capture The Flag events through the year, Legitimate Business Syndicate is proud to announce the following events as DEF CON 22 CTF pre-qualification events:

  • Event
  • Date
  • Organizers
  • Qualified Team
  • DEF CON 21 CTF
  • August 1-4, 2013
  • by Legitimate Business Syndicate
  • Plaid Parliament of Pwning
  • RuCTFe
  • December 14, 2013
  • by hackerdom
  • More Smoked Leet Chicken
  • Ghost In The Shellcode
  • January 17-19, 2014
  • by Men in Black Hats + Marauders
  • Dragon Sector
  • Olympic CTF
  • February 7-9, 2014
  • by More Smoked Leet Chicken
  • penthackon
  • Boston Key Party
  • February 28 - March 2, 2014
  • by Boston Key Party
  • ???
  • Codegate Finals
  • April 1-2, 2014
  • by Codegate
  • ???
  • PHDays
  • May 21-22, 2014
  • by phdays
  • ???
  • SecuInside
  • Unannounced
  • by SecuInside
  • ???

Twelve more spots will be available to teams wishing to play at the DEF CON 22 Capture The Flag through our own open qualifiers, hosted May 17-May 19.

All qualifying teams will receive eight "Human" badges for admission to DEF CON 22 this year, as well as two hotel rooms at the Rio Las Vegas, for the duration of the event.