This is the third post in my series on the NSA Codebreaker Challenge 2015, covering the third task of the challenge. If you haven't read them, you might want to check out the posts on Task 1 and Task 2.

Task 3

    The copy of the program you have is …

This is a continuation of my previous post on the NSA Codebreaker Challenge 2015, and covers the second task in the challenge.

Task 2

    Through SIGINT we have collected a new message file - this one appears to
    have been sent to a field operative in the terrorist organization that is …

Last year, the National Security Agency held a reverse engineering competition for students. It ran from September 1st to December 31st, and consisted of four tasks. The results page lists the participating schools and students, along with tasks completed, rankings, and times. I represented Florida State University and was able …

In the 2015 SANS Holiday Hack Challenge the goal was to determine the true purpose of the "Gnome In Your Home" product, as well as "Who" was behind its development and the details of their dastardly plot. This is a writeup of my findings and how I arrived at them …

Executive Summary

VLC versions before 2.1.5 contain a vulnerability in the transcode module that may allow a corrupted stream to overflow buffers on the heap. With a non-malicious input, this could lead to heap corruption and a crash. However, under the right circumstances, a malicious attacker could potentially …