Capture The Flag Competition 2026
HASBL CTF
Brought to you by ExploitsFromHeaven
01 / Overview
What is HASBL CTF?
HASBL CTF is a global Capture The Flag competition organized by ExploitsFromHeaven. The competition follows the Jeopardy format, featuring challenges across multiple categories including web exploitation, reverse engineering, cryptography, forensics, pwn and OSINT. The event runs for exactly 48 hours — from May 29 at 20.00 to May 31 at 20.00 — and is open to everyone. No prerequisites, no registration fees. Just skills, curiosity, and a drive to hack.
Format
Jeopardy-style CTF with multiple challenge categories. Solve challenges, earn points, climb the leaderboard.
Duration
48 hours non-stop. May 29 at 20.00 UTC+3 through May 31 at 20.00 UTC+3.
Who Can Join
Anyone and everyone. Students, professionals, beginners, experts — all skill levels are welcome.
Organized By
ExploitsFromHeaven — a team passionate about cybersecurity, research, and the art of exploitation.
02 / Guidelines
Competition Rules
Teams must consist of a minimum of 1 and a maximum of 4 members.
Flag sharing is strictly prohibited. Any team found sharing flags will be immediately disqualified.
All participants must compete with respect and integrity. Harassment, offensive behavior, or unsportsmanlike conduct will not be tolerated.
Prizes will be awarded to the top 3 teams on the final leaderboard at the end of the competition.
The flag format is HASBL{...}. All flags follow this exact format.
Challenge point values are dynamic — as more teams solve a challenge, its point value decreases.
Using a hint for a challenge will reduce that challenge's point value for your team.
Important announcements during the competition will be made via the official website and our Discord server. Stay tuned to both channels.
Any attempt to attack the competition infrastructure, other teams' systems, or perform unauthorized actions outside of provided challenge environments will result in immediate disqualification.
The organizers' decisions are final in all disputes and rule interpretations.
03 / Rewards
Prizes
04 / Partners
Sponsors
Sponsor slots available
Sponsor logos and links will appear here as partners join. Interested in sponsoring? Reach out to us.
05 / The Team
About Us
ExploitsFromHeaven is a cybersecurity team driven by a passion for offensive security, research, and building cool things. Meet the people behind HASBL CTF.
06 / Contact