Firmware Reverse Engineering

Developer reverse-engineers Egret GT e-scooter, rewrites display firmware in Rust

A hobbyist took apart an Egret GT electric scooter, examined its Bluetooth app and firmware update mechanism, and discovered a way to bypass its PIN lock via a hidden firmware update mode. He also found the scooter silently transmits unlisted telemetry data, including driving-mode duration, motor current, battery voltage and charge history, and went on to write custom Rust firmware for the scooter's display unit.

bensimms.moe · 2026-09-10

Researcher uses Claude Opus 5 to reverse-engineer firmware in mic, webcam, key light

An engineer spent two weeks pointing an AI coding agent, Claude Opus 5, at the firmware and update tools of everyday USB peripherals—a microphone, a webcam, and a key light. The agent extracted a full command shell from the microphone, found a way to disable the webcam's recording LED while it still captures video, and discovered the key light accepts unauthenticated memory writes from any device on the same WiFi network.

schlarp.com · 2026-08-23