tags:secure_boothardware_hackingfirmwareiot original link: Hacking a 2014 Tablet…in 2024 newsletter link: exploits.club Weekly Newsletter 35 - NPU exploits, Phrack 71, 2014 Tablet Hacks, and More
Exploits Club Summary:
A fun post from last month from @r0rt1z2 discussing his successes and failures in hacking the Amazon Fire HD6. The write-up begins with a walkthrough of firmware analysis, rooting the device, and accessing UART. Roger then discusses how he attempted to access bootROM mode, successfully achieving the mark of any good hardware hacking project…killing his first unit. He then pivots to target the preloader, explaining how to leverage a GCPU exploit for arbitrary memory read/write. After failing to dump the bootROM, he decided to upload and execute his own preloader payloads. The post then goes on to discuss how he was able to unlock the bootloader and craft a malicious boot image.