GRU Con 2021 Capture the Signal CTF


Again CTS CTF - this time on GNU Radio 2021 conference (virtual) %)

Rules as the same as before at HWIO2021 but this time signals are given as download links (i.e. no need to use CTS tools): Also some tasks were software programming related - its is plus for me due to my previous competitive programming expirience %)

This time I was prepared much better and our team got… the 2nd place %):


As usually - my writeups.

Written on October 1, 2021