The "Always Open" sign mocks you, its neon glow a cruel joke in the face of the curfew. 2 AM. The gym doors, usually a beacon of sweat and iron, are locked. But the pull of the weights, the need to escape the confines of your apartment, is too strong. You kneel, unzip your laptop bag, and expose the maintenance port on the archaic door lock. A few lines of code... and you're in?

Download challenge files

Solve locally first, then go here to get the flag: nc lock.flu.xxx 1337