Challenge: OSINT - Snapshot Street 25 solves out of 510 teams; 3rd solve by OP_EN. 1. Description and handout Wandering through this country, or is it a continent?, you’ll notice a mix of every...

Challenge: Misc - Three Secrets 17 solves out of 510 teams; 4th solve by OP_EN. 1. Description and handouts When the three secrets are brought together only then can the flag be constructed. N...

Challenge: Osint - What a :poop: show This is the official write-up by the challenge author. This is an easy (Geo)OSINT challenge submitted for the Special Round of QnQSec CTF 2025. 1. Descript...

Challenge: Misc - GissaPlatser suite 1. michael A reverse image search of the highest peaks in the distance returns results pointing to the Teton Range in Wyoming, USA. The name of the challenge...

Challenge: Forensics - Foorensik1 (1/2) 1. Task description Flag in disk image. Forensic. Find it. You should know the drill. Flag Format cdctf{123_ex4mpl3_fl4g} 2. Initial analysis We’re giv...

Forensics - Off By One 46 solves out of 1190 teams. Embargoed after the event. 1. Initial analysis Scanning the QR code in the provided hidden.png gets us Rick-rolled. 2. Deeper visual analys...

misc/Z - hard 9 solves out of 843 teams; second-blooded by OP_EN. 1. torga Reverse image search of the ruins on the hill returns Castle of Miranda do Douro. GSV Photo Sphere location: 41.4969674...

misc/Z - easy 23 solves out of 843 teams; second-blooded by OP_EN. 1. taxi Searching for the phrase Vulcano Taxi Santi written on the taxi returns a tour service operating in Vulcano Porto, Italy...