Defcon 21 quals - blackbox write-up

It was DEFCON 21 quals last week-end, with new organizers. It went well, good organization and good challenges. If you're curious about the results, here is a fancy top15 graph. Apparently it was too easy for PPP who finished all of the challenges... insane! :)

There were 5 categories:

• 3dub: web-based challenges
• 0x41414141: exploitation
• \xff\xe4\xcc: shellcode
• OMGACM: guerilla programming
• gnireenigne: reverse engineering

I liked the exploitation ones with ARM under Linux/FreeBSD. Reverse was nice, shellcoding interesting but some painful, web was way too easy and OMGACM just annoying.
If you want to have a look, @JonathanSalwan saved some of the binaries on his repo.