A Nerd's Life: Weeks of Firmware Teardown to Prove We Were Right
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A detailed firmware teardown of a smartwatch that exploited an out-of-bounds read vulnerability to extract and analyze the device's firmware, revealing how its heart rate and blood pressure sensors actually function without visible hardware.
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In a blog post published last December, we demonstrated how we managed to extract the firmware from a smartwatch by exploiting an out-of-bounds read vulnerability and spying on its screen interface. Follow us on our long and unexpected journey to figure out how this smartwatch can measure heart rate or blood pressure with no visible sensor, the problems we encountered while analyzing its firmware, and how we solved them to uncover The Truth about this device.