BSides Knoxville 2019

Suppose that you have a small radio, such as a wireless sensor or a digital walkie talkie, and you'd like to talk to it. This action packed talk will show you how to rip the configuration from the airwaves, the firmware, or the SPI bus of an embedded radio, then write them into your own hardware to receive and transmit packets. Learn how to extract keys when crypto is good, or how to efficiently crack it when it's not. Learn how to track down the interesting parts of firmware for patching, and how to rewrite the firmware from scratch and a few notes. These examples are taken from real hardware.