bbtc33

Writeups

Exfilter

This was the easiest rev challenge in brics+ CTF, hosted by ITMO in Russia with the support of several (as of the time of writing) US sanctioned Russian companies. The challenge includes two files, exfilter.ko, a kernel module, and exfilter_traff.pcapng, a network capture. Opening exfilter_traff.pcapng

Writeups

shELFing

This is the first, and easiest challenge in the brics+ CTF, hosted by ITMO in Russia with the support of several (as of the time of writing) US sanctioned Russian companies. This challenge suggests that you have to send a tiny ELF x64 executable which calls /bin/sh or equivalent.