Another challenge I picked up was the SSH-Client challenge. It started with a linux ssh binary. The premise was that this was an ssh client with a secret in it. At first I didn’t know what to do with it, as I didn’t have a version of this that I could compare it to. My teammate had already uncovered that it was OpenSSH_8.2p1 with OpenSSL 1.0.2. I then set up a docker container running Ubuntu 18.04 with libssl1.0 and gcc5. I then downloaded the source for OpenSSH and compiled it.
This year was my third year at northsec and it was also my best year. My team was “skiddies as a service” and we placed 4th this year at 125 points. I personally participated in many challenges and scored 23 points.
Hey, welcome to my first blog post… I made the website and put it on my server and the only thing that is left to add is the content. That’s the hard part.