The 2019 Codebreaker Challenge consists of a series of tasks that are worth a varying amount of points based upon their difficulty. All tasks will become available immediately once the Challenge goes live and can be solved in any order, though there may be some dependencies between tasks. The point value associated with each task is based on relative difficulty and schools will be ranked according to the total number of points accumulated by their students. It is still recommended to solve tasks in order since the tasks flow with the storyline, but that is not a requirement. Solutions may be submitted at any time for the duration of the Challenge. Good luck!


DISCLAIMER - The following is a FICTITIOUS story meant for providing realistic context for the Codebreaker Challenge and is not tied in any way to actual events.

Tech savvy terrorists have developed a new suite of communication tools to use for attack planning purposes. Their most recent creation — TerrorTime — is a secure mobile chat application that runs on Android devices. This program is of particular interest since recent intelligence suggests the majority of their communications are happening via this app. Your mission is to reverse-engineer and develop new exploitation capabilities to help discover and thwart future attacks before they happen. There are 7 tasks of increasing difficulty that you will be working through as part of this challenge. Ultimately, you will be developing capabilities that will enable the following:

  1. Spoof TerrorTime messages
  2. Masquerade (i.e., authenticate) as TerrorTime users without knowledge of their credentials
  3. Decrypt TerrorTime chat messages