Building on the work of others (as is always the case!) [pepe2k] managed to get root access on the Philips Hue Bridge v2 IoT light controller. There’s nothing unusual here, really. Connect to the device over serial, interrupt the boot process, boot up open firmware, dump the existing firmware, and work the hacker magic from there.
Of course, the details are the real story. Philips had set U-Boot to boot the firmware from flash in zero seconds, not allowing [pepe2k] much time to interrupt it. So he desoldered the flash, giving him all the time in the world, and allowing …read more
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