A global attack/defense arena for hackers who break things on purpose. Crack web, crypto, binaries, and industrial control systems. Every flag you capture writes your name into the ledger — forever.
Each category runs its own ladder, its own scoring weight, and its own breed of suffering. Pick a lane or take them all.
Injection, SSRF, deserialization, auth bypass and prototype pollution. If it parses input, it bleeds.
Broken ciphers, lattice attacks, oracle abuse and home-rolled RSA with a fatal allergy to randomness.
Heap grooming, ROP chains, format strings and seccomp jails. A shell is just a bug away.
Obfuscated VMs, anti-debug traps and hand-written assembly designed by someone who hates you.
Memory dumps, packet captures, deleted partitions and that one JPEG that is definitely not a JPEG.
Firmware pulls, JTAG, side channels and programmable logic controllers wired into the live grid.
48 hours. Attack/defense. Every team gets a fortress, every fortress has a flaw.
Sixteen teams survive the qualifiers and drop into a live network of vulnerable services. Defend your flags, breach theirs, and keep the scoreboard climbing — the grid goes dark at hour zero.
Scores recalculate on every capture. Ties break by first-blood timestamp, then by solve speed.
Every solve earns XP. Every rank unlocks harder infrastructure, private ranges, and a seat at the finals.
Sandbox ranges, beginner ladders and guided walkthroughs. Learn to hold the knife.
Full challenge catalog, ranked ladders and private team channels unlocked.
Attack/defense queues, custom infra deploys and monthly cash brackets.
Author your own challenges, shape the season, and get paid per solve.
Only touch assets inside the arena. Out-of-scope attacks are an instant permanent ban, no appeal, no exceptions.
Trading flags across teams voids every score from both sides. The ledger is public and it remembers.
Breaking the game is cheating, not solving it. Keep the infrastructure alive so everyone can suffer equally.
Publish a writeup after the event closes. Knowledge compounds — hoarders get shadowbanned from the rankings.
Create a node, join a legion, and start capturing. Free forever for solo players — no credit card, no gatekeeping, no mercy.