Omega Stonks was a 50 point misc challenge in UIU-CTF 2020! Challenge Plan of attack You can type !work in the chat with IsabelleBot to earn stonks + it’s late at night, and I need to get 8 hours of sleep = automate sending !work to IsabelleBot. In High School I used to make costume controllers for our robotics team using Arduino Boards (essentially they would mimic a keyboard), so for nostalgia’s sake (and because I didn’t want to look into making a Discord bot), I grabbed my old friend DigiSpark (with an ATTINY85) and started automating!

QotD ended up being worth 490 points in the Reverse Engineering category in HackPack CTF 2020. From here, you get a binary to investigate as the client. When you run it, you get 2 options to play around with: e (to echo something back) and q (to get a quote). Reverse Engineering The challenge hints about a backdoor in the client, let’s throw the client binary into a disassembler of our choice and take a look!

REDo2 ended up being worth 152 points in the Reverse Engineering category in TAMU CTF 2022! Step 1: I much rather read Pseudo-C I can read assembly and have in the past when my disassemblers have lost track of what is happening or if I am in gdb, but I’ve been spoiled by Binary Ninja and Ghidra so why not just assemble the code 👀 If you run gcc -g -m32 -c redo2.