Writeups
PowerPlay
By Smallfoot Feb 1, 2025
Writeups
*nix philosophies
A CSAW '24 Quals challenge
Writeups
Is There an Echo
Maybe next time you should record your music in an acoustically treated space by slimecat Plug This challenge was written for CSAW 2024 qualifiers by a member of NYU's OSIRIS Lab. CSAW is the world's most comprehensive student-run cybersecurity event and it's hosted here
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.
Writeups
DEFCON 2022 Quals: hash-it-0
shellcoding using hash functions! hash it 0 The hash-it-0 challenge is from DEFCON’s 2022 qualification round. It is like a normal shellcoding challenge but with mild steroids… The challenge involves shellcoding and we need to encode the shellcode for the target program to process and execute. Analysis The challenge