This year at CSAW Finals, Vector35 contributed an entire NES/Famicom RPG as a challenge category. One challenge was solving the puzzle of the mysterious “Blox Cave” – a room of 24 urns that need to be activated in a certain combination in order to open the door to the flag.
This challenge consists of a capture file containing USB packet. We notice that one of the USB devices floods most of the capture with several hundred packets per second. The device uses the address 12, and hence can be filtered using:usb.device_address == 12