The T19 Challenge

The T19 challenge has concluded.

Summary & solutions

To try the challenge for yourself you can pull the challenge Docker image and play (see repository description for instructions). Start with the story below.


Our company developed a unique Linux binary called "cat". We recently discovered that our competitors from the Antivirus company VirusExpress are blocking our cat binary. It is now signed as a virus. Word is that you are a badass security researcher. We need you to infilitrate their server and empty their database.

Download cat