This year we celebrate the 6th anniversary of the C3 CTF. Grab some of your hacker friends and sign up. In case you’ve been living under a rock, Capture the Flag (CTF) is a team-based competition testing hacker skills like pwning, reversing and breaking cryptography. 34C3 CTF will start on Day 1, Dec. 27th, 2017 at 9pm local time (UTC+1) and last for 48 hours. While this falls within congress time, the competition is hosted on the internet, is free to play for everyone and requires virtually no setup. At least one of our challenges will require a working Windows 10 VM, so you might want to set that up in advance.

Further, we will offer a junior version of our CTF with less demanding challenges. For anyone who has never played CTF before or is still beginning their CTF journey, you may check out the separate scoreboard here.

If you’re on-site be sure to pay us a visit. We may have table space for anyone not associated with an assembly. Anyone else can contact us on irc: /join #34c3ctf on hackint.

Have fun and good hack,
Eat Sleep Pwn Repeat

This year we celebrate the 5th anniversary of the C3 CTF. Grab some of your hacker friends and sign up. In case you’ve been living under a rock, Capture the Flag (CTF) is a team-based competition testing hacker skills like pwning, reversing and breaking cryptography. 33C3 CTF will start on Day 1, Dec. 27th, 2016 at 9pm local time (UTC+1) and last for 48 hours. While this falls within congress time, the competition is hosted on the internet, is free to play for everyone and requires no setup.

If you’re on-site be sure to pay us a visit. Anyone else can contact us on irc: /join #33c3ctf on hackint.

Have fun and good luck,
Eat Sleep Pwn Repeat

 

Dear Congress visitors,

for the fourth time at the Congress, we will organize a Capture The Flag competition, which will be open to all participants, on-site and online. Gather some friends and 

register your team. In good tradition, this years challenges are heavily biased towards binary exploitation. Ports will open at 20.00 UTC (21.00 local time) on December 27th and expect your ropchains for 48 hours straight. The competition will be in Jeopardy style and does not need any setup on your side.

This years winner will be qualified for the DEFCON CTF 2016 going down in Las Vegas, Nevada, USA. If you’re playing on-site, be sure to pay us a visit! For any questions, best join our IRC channel, #32c3ctf on hackint.

Have fun and good luck,
StratumAuhuur

Dear Congress Visitors,

For the 3rd time during CCC you can take part in the CTF competition, proving you are a worthy hacker. Grab a bunch of friends and knock on our ports, smash some stacks, corrupt some heaps and get yourself some shells. Servers are expecting your exploits from Dec. 27 at 21h00 CET for 48 consecutive hours.

The CTF will be in “jeopardy style”, requiring no setup on your part and it will be open to everyone, online or on-site. Register your team at 31c3ctf.aachen.ccc.de and visit our assembly to bribe us with beer or mate. There will be a couple of easier challenges, so if you have never played before, this is the time!

Good luck and have fun!

Dear Congress Visitors!

You’re tired of running around the Congress on the Schnitzeljagd (sounds like it’s fun!) or didn’t get a place? You’re like knocking your head on problems? Then we might offer something interesting for you!

Grab a few friends and join our capture the flag competition. These so called CTFs are hacking competitions in which participants solve various challenges – all based around gaining access to remote machines by exploiting vulnerable binaries, solving mathematical problems and completing various other tasks. This CTF will be run in “Jeopardy” style, i.e. challenges can be solved independently and are divided into categories. Each solved challenge gains your team points based on its difficulty. You will be able to track your and other team’s progress on a publicly visible scoreboard.

The CTF will start on day 1 (December 27th) at 20:00 CET (that’s 19:00 UTC) and lasts for 48 hours. The registration will be open before and during the competition, so anyone can join in late. In line with the usual motto Congress Everywhere, teams are able to participate remotely. Even if you never played in a CTF before, don’t hesitate to take part!

If you still have any questions, you can meet the CTF organizers at their Assembly.

Good luck and have fun!