The Sharif University CTF 2014

It looked like a fun CTF, but I did not have the chance to play for too long. I managed to solve a few problems in the morning and the solutions are below.

Avatar: Steganography

The challenge starts with:

A terrorist has changed his picture in a social network. What …

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CSAW CTF 2014 - Reverse Engineering 100: "eggshells"

This is the first exploitation problem and it starts with the following text:

I trust people on the Internet all the time, do you?

Written by ColdHeat

Unzipping and Analyzing the Files

Let’s unzip the provided zip file:

$ unzip

This creates a directory called eggshells-master …

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