📶 Analyzing Cellular Basebands with FirmWire 🔎
Event start: 3 months, 2 weeks ago // Event Information
This talk will discuss cellular basebands and FirmWire, our open-source platform for baseband firmware. The platform allows researchers to emulate, dynamically debug, introspect, and interact with complex baseband firmware, providing insights about its inner workings in real-time.
FirmWire’s integrated ModKit creates and injects custom tasks into the emulated baseband. We leverage the ModKit for full-system fuzzing via AFL++ by creating custom fuzzing tasks interacting with the host, using special hypercalls. With this setup, we uncovered several pre-authentication vulnerabilities in the LTE and GSM stacks of Samsung’s Shannon and MediaTek’s MTK baseband implementations, affecting billions of devices.
FirmWire is the outcome of a more than two-year-long international research collaboration between the University of Florida, Vrije Universiteit Amsterdam, TU Berlin, and Ruhr-University Bochum.
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