Oct
04

Announcing hackyou CTF

It’s fall already and that means the new CTF season is starting, and so is the new academic year in our university. This is the time when we want to attract more freshmen into our CTF tarpit ;-D So we are running – a CTF. But it’s not just for them. Wouldn’t it be fun… Continue reading »

Sep
15

Leet More 2010 ELF Quest writeup

Find the hidden message. file Try the file tool and u’ll be told it is an ELF file. But any other tools say the header is corrupted and if you compare it with true ELF header, you will know it’s a trash. A good thing for further analysis is to count chars. 73 30 6d… Continue reading »

Sep
15

Leet More 2010 Time Traveller writeup

A scientist who worked on the issue of space-time continuum, suddenly disappeared. He left only a mysterious drawing in a notebook. There is a suspicion that he traveled back in time. In what year did he travel? And what is his name? There are only 2 breaks in this maze. Let’s try to find the… Continue reading »

Sep
15

Leet More 2010 Noise Magic writeup

I think there’s nothing interesting in this image. Do you agree? image The image looks like it’s just a random noise. To make sure, we can measure a randomness. Pixels of each color can appear in each place of the image with equal chance. If it’s false for some colors, we certainly want to look… Continue reading »