Wait, what is this?


Campus Party Valencia is the most famous spanish LAN party. SecurityByDefault.com was the organizer of the hacking wargame but notice the wargame is already OVER and has a winner.


The wargame had five categories{trivial,web,networking,binaries,crypto} and three levels on each category {easy,medium,hard}


But some of the levels were never solved on time. Those were networking03, binary03, crypto02 and crypto03.


Binary03 was created by Rubén Santarmarta, from Wintercore.com and both crypto levels by me, Javi Moreno. So we decided to release them here as a challenge, there's non sense in keeping them.


Unfortunately, crypto03 was never available through the wargame because no one solved the previous level, it will not be released so SecurityByDefault.com can mess with your brain whenever they want (insert evil laugh here)


To cheer it up a little we will give a little price to our out-of-time winners.

Rules


Prize


Thanks to Wintercore for sponsoring


Wintercore

First and only prize for solving both levels correctly will be a $30 gift card for Amazon

Game log:

- Aug 3rd at 19:30 GMT+2: Eloi Sanfèlix (@esanfelix) solves crypto02

- Aug 5th at 17:50 GMT+2: Two hints and deadline added

- Aug 6th at 16:40 GMT+2: @roman_soft and @dreyercito solve crypto02

- Aug 8th at 21:55 GMT+2: Dani Kachakil (www.kachakil.com) solves crypto02

- Aug 12th at 03:00 GMT+2: @earada solves crypto02

- Aug 18th at 20:00 GMT+2: Uri solves binary03

- Aug 25th at 19:30 GMT+2: Uri solves crypto02

- Aug 25th at 19:30 GMT+2: We have a winner!! Uri from Int3pids :D Congratulations

You read code. You understand code. You win.

Hint: Mr. Potato needs morphine
Low level reversing might not be the fastest way to solve this one although it can help.
Hint: I do not obey everybody

Solutions - Write-up