Category: Radio
Difficulty: Hard
Author: explo1t
First Blood: Dragon Sleep Pwn Sector

Solved By: Dragon Sleep Pwn Sector

In order to safeguard their flags, the ALLES team has brought their secure storage garages to the camp. They can be opened remotely with transmitters, using military-grade encryption™. We heard about security issues with similar products, but according to the manufacturer, their garages are secure! Phew.

Only a small number of highly trusted team members carry the transmitters. Unfortunately, one of them got drunk on Tschunk and a transmitter for one of the garages ended up in enemy hands.

You got hold of the remote control and can press the button: http://hax.allesctf.net:8080

Can you raid the second flag vault?

The following parameters might help you:

Symbol Duration: 512u
Sample Rate: 200k
Frequency: 433.920 MHz

The signal is transmitted near Dragon Sleep Pwn Sector (each signal 10 times, bc transmission errors). You can either connect to our remote receiver, or receive the signal locally using the SDR of your choice. For transmitting your solution, please use our submission queue which will allocate a time slot, transmit your signal and provide you with a video feed of the garage.

You cannot physically access the garages.