Citadel CTF 2025

As part of Cryptober, we present a 36-hour online Capture The Flag set in a dystopian tower of decaying tech, forgotten machines, and veiled truths.

Designed with beginners in mind, Citadel CTF is an immersive journey through cryptography, forensics, web security, and more. Each challenge solved lifts you one floor higher, uncovering fragments left by past climbers and drawing you deeper into the tower's mysteries.

Team Size: 1-4 members per team

Prize Pool: ₹15,000

Date: 4th October 12:00 PM - 5th October 11:59 PM

Top performers get direct entry into Cryptonite Task Phase

In case of any queries, please raise a ticket on our Discord Server