Reversing and Exploiting Broadcom Bluetooth
Explore the intricacies of Bluetooth firmware analysis and exploitation in this conference talk from Recon 2019. Dive into the world of InternalBlue, a powerful framework for analyzing and patching Broadcom Bluetooth chips. Gain insights into the challenges of reverse engineering complex firmware with thousands of undefined functions, and learn how to port features across different firmware versions. Discover practical examples of writing custom patches using both assembly and C, leveraging the Nexmon project for extended functionality. Examine two critical vulnerabilities, CVE-2018-19860 and CVE-2019-6994, uncovered during the research process. Understand the practical implications and difficulties of patching Bluetooth firmware in real-world scenarios, making this talk invaluable for security researchers and Bluetooth enthusiasts alike.