Dec
04

iCTF 2011. Challenge 29 ($800)

Program is not packed x86 executable PE file. binary

Dec
04

iCTF 2011. Challenge 30 ($500)

There is encrypted file “reverse2.7z.enc”. So if you look careful you see repeated pattern:

Dec
04

iCTF 2011. Challenge 31 ($ ?)

Program is not packed x86 executable ELF file. There is a very easy logic here. Secret information about bank account is generated from input code.

Dec
04

iCTF 2011. Challenge 32 ($ ?)

Program is not packed x86 executable ELF file. There is a very easy logic here. Secret information about bank account is generated from input code.

Dec
04

iCTF2011. Challenge 33 ($100)

There is file “reverse5”, but if you look at that, you don’t see executable file at all. It is some “binary trash”. Size is 991117 bytes and it looks like a packed one (large entropy).

Dec
03

The significant game, but EPIC FAIL! 2th on iCTF 2011

First of all, big thanks for UCSBiCTF !  It was really GREAT game!There are good task and services! We played as More Smoked Leet Chicken (Leet More + Smoked Chicken) and It was the best game of those that I remember! We have done a lot of tasks (most of all, if I’m not mistaken), had a lot of fun! But had… Continue reading »

Oct
09

EnoWars CTF – GTFO (300 Pts)

Category: reverse, network While trying to figure out how to leave, you notice some Rhynchodos millenios. It’s really surprising to see one of those. Remember that documentary they had on Discovery Channel? They were pretty much the cheapest ships you could get. And they sucked. Big time. Being built with the cheapest materials around and… Continue reading »

Oct
08

EnoWars CTF – Get On Board (500)

Category: crypto There is also this nice new spaceship in the hangar just waiting for us. Some old-school mobil terminal describes it as: “The Heart of Gold is the sleekest, most advanced, coolest spaceship in the galaxy. “Its stunning good looks mirror its awesome speed and power. It is powered by the revolutionary new Infinite… Continue reading »

Oct
08

EnoWars CTF – Invaders 100 pts

Are you ready to fight? Jedimaster: We can’t afford to wait any longer. Energy I’ll use to defeat their spaceships and clear the way for our troops. Just me give a figher EnoInvaders.tar.gz Hash Summary: packet analyze, a little reverse

Oct
02

rwth2011 CTF – mastermind

Mastermind was an easy service, written on Ruby. Download (mmd.rb and mmd.db) Summary: SQL Injection, guessable id’s, guessable flag (by id)

Oct
01

rwth2011 CTF – ps3game

This service was on exploiting, understanding udp protocol and process of sign data. ps3game files Summary: reversing, crypto, rsa, tea hash, udp sign

Sep
30

Xakep Magazine. Defcon 19 CTF Report

Today October 10 (153) 2011  Xakep (“Hacker”) magazine issued with our (team IV) Defcon CTF report. Full article you can find when you buy the magazine.

Sep
26

hack.lu 2011 First Pre-CTF challenge

Category: reversing binary Summary: hash algorithm analyze, crackme

Sep
25

hack.lu CTF 2011 FluxScience (450)

Category: reversing Thanks to a former employee of FluxScience (one of our competitors), we managed to get hands on some important files which might help us revealing company secrets. Attached you will find the files. The employee who provided them got fired. You might be lucky and find his account still working: FLUX-38B273DD75860083-0B3DD6B02EC5B9B1-4AFFBAC2EB8B4D17 He might… Continue reading »

Sep
22

hack.lu CTF 2011 Wipe out the Klingons (400)

Category: crypto We already made it. The evil Klingons agression is nearly fended. But their final mothership is well protected and even sacrifing a huge number of battleships caused only minor damage. Spies told us an unclear message caused most technical operators and the commander to leave the ship. Unfortunately we are unable to locate… Continue reading »

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