OSINT Industries Christmas 2025 CTF Find the Masked Man Description In this first challenge, a photograph was taken on December 3rd, 2023 around 18:00 and we must identify the nearest metro station in Paris. We also get a hint that the scene is located near the intersection of a Rue and an Avenue. Solution I crop on the part of the image that shows shops. I can distinctively read “Julien”, and then perhaps “Brasserie” or “Creperie” or something like that, and a shop name ending “Aid” (maybe an English name).

Xmas Root Me CTF 2025 X-Mas Assistant Day 1 Description of the challenge “Meet your X-Mas Assistant! It will help you throughout this entire month of CTF, providing a brand-new way to interact with CTFd through a “futuristic” Chatbot UI. This assistant talks directly to the CTFd API for you! Try it now! Can you exploit its MCP quirks and uncover the flag? This is not a web challenge.Meet your X-Mas Assistant!

Cryptax Nomination Awards. Lol. In other words, I’m listing my favorite talks, papers, challenges (etc) for the second half of 2025. Nothing more than that. Okay? H2 2025 Category Nominated Best security talk W. Beukema, Trust me, I’m a shortcut: new lnk abuse methods Best malware research paper T. Letailleur, LinkPro: eBPF rootkit analysis Best AI talk Pancake, Vibe Reversing, r2con Best hacking paper N. Seriot, Print to Play, PagedOut e-Zine, page 38 Best new tool for reverse engineering  r2mcp Best not-so-new tool I learned to use during H2 2025  polybar Best conference food  UYBHYS Best CTF challenge Xmas Root-Me Challenge Day 03 There were many runner-ups: lots of excellent material to digest at r2con or in PagedOut, a technical blog post by NVISO on Frida…