This is a write-up for the following challenges: Containers Quantum Kraken Device - the Skeleton Key. Calibration 1 and 2. Internet Services Automation 101 (Hackademy track) Sailor Kidz (part with “A” ciphertext) Containers The theme of this CTF was a cruise ship, CVSS Bonsecours (conference and CTF taking place at Marché Bonsecours in Montréal). Description: While the Bonsecours is obviously a cruise ship, civilian ships can be chartered to carry cargo in containers.

This challenge consists in a jackpot gain. To get the flag, we need to win and get a balance of 100000 CHF (we’re in Switzerland). The game is available remotely (nc wol.insomnihack.ch 7777) and a local ELF x86-64 binary copy is provided (but without the flag). I didn’t personally flag this challenge, but worked on it and enjoyed it. Another team mate flagged it :) Then, a few days later, I looked at it more in depth, and found an even quicker way to flag.

Xmas Root Me CTF 2024 Generous Santa (Day 1) - Web This is a web challenge. We are given a Docker environment to test locally, and then have our own instance online to retrieve the flag. We can upload photos of potential gifts and then select what we’d like Santa to bring us. Inspection of the source code of the website shows: The code does not check we upload a photo.