NixOS ML workstation
Introduction Some time ago I built a machine learning workstation based on used Gigabyte MZ32-AR0 with EPYC 7532 and 512GB of ram from China and one 3090 (more incoming!). As it's shared with other people, I had to make it behave like a normal linux distro. Having some issues wit…
CSAW CTF Qualification Round 2021 - Alien Math
Alien Math Task description Brush off your Flirbgarple textbooks! alien_math Solution The application asks 3 questions and while the first two are implemented correctly the 3rd uses gets. So, we have to correctly answer to the first two questions and then just do a simple stack b…
CSAW CTF Qualification Round 2021 - A Different Type of Serial Key
A Different Type of Serial Key Task description Attached are serial captures of two different uploads to an embedded device. One of these uploads is a key and the other is a function block. Your goal is to decode the serial traffic, extract the key and function block, and use the…
CSAW CTF Qualification Round 2021 - ncore
ncore
Task description
We have a very safe core with a very safe enclave.
ncore_tb.v
server.py
Solution
This is a tiny cpu core with a safe enclave containing private data. Now, let's see the details.
We have some instructions:
define ADD 4'd0 define SUB 4'd1
`define …
CSAW CTF Qualification Round 2021 - warm-up
Turing Task description Recruiting the next Turing. See if you can break this historic cipher! Ciphertext: jmodtrr_tdwumtu_cydy_ynsldf You might need this: M3 UKW B Solution enigma online decoder foreign chars: include flag: flag{scruffy_looking_nerf_herder} Crack Me Task descri…