The CTF is over! Congrats to the winners int3pids, Dragon Sector, and "The Cat is #1!!", we will contact you shortly. A big thank you to all the people that played, and we look forward to reading your writeups!

If there is any news during the CTF we will post it here, on IRC and on Twitter.

The game will start at Friday the 2nd of August 12:00 local time (CEST / UTC+2) and will last 36 hours.

Rules & Info

  • This is our first organized CTF, please keep that in mind and be gentle when things go wrong.
  • During the CTF the registration page will stay open for any teams who want to join during the CTF.
  • ebCTF is Jeopardy style.
  • Do not contact us on browser problems, try a different one.
  • There is no limit in the number of people participating per team. You only need one registration per team.
  • Sharing keys or solutions is prohibited. This action is subject to disqualification.
  • Attacking machines other than designated ebCTF machines is strictly prohibited.
  • If you think you have the valid key that the system rejects, contact us.
  • If you find any bug in the system, please report it to us.
  • In order to claim prizes, write-ups might be required.
  • If you are not sure if something is a violation of the rules, ask us!
  • ebCTF 2013 is a Web-based CTF. There is no need to set up VPN environment.
  • Eindbazen will release all challenges afterwards including sources.
  • ebCTF will not contain any hints unless really necessary.
  • ebCTF will not contain any bonus points.
  • All flags will have the layout of ebCTF{MD5} and are case insensitive.
  • Brute forcing against the ebCTF infra is not allowed.
  • Using webscanners such as Nikto or Nessus will not help you solve the challenges.
  • No commercial tools are needed to solve the challenges.
  • Any cracking can be done well within an hour on a standard PC.
  • There will be no hidden challenges, but there may be easter eggs.
  • There will not be any Trivia questions or 4 hour google sessions.
  • Email or contact ebCTF on IRC if you have questions.

IRC info

  • Our official IRC channel is #ebCTF on freenode
  • Behave
  • No trolling please
  • Please do not post any spoilers / flags
  • Please do not post any ASCII art / useless links / memes
  • Please do not request help, this is a CTF, you compete against the other teams, no one will get help
  • Feel free to report things that are broken to us, but don't mention challenge details in the public channel
  • Only the ebCTF organisation will have +o, so you can recognize them
  • Although we are Dutch, the language spoken on IRC will be English