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Breaking Secure Boot on Google Nest Hub (2nd Gen) to run Ubuntu
In this post, we attack the Nest Hub (2nd Gen), an always-connected smart home display from Google, in order to boot a custom OS. First, we explore both hardware and software attack surface in search of security vulnerabilities that could permit arbitrary
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Booting Ubuntu on Google Chromecast With Google TV
In a previous post, we detailed a vulnerability in the Amlogic System-On-Chip bootROM that allows arbitrary code execution at EL3. Since the Chromecast with Google TV (CCwGTV) is one of the devices affected by this issue, it opens the possibility to run a
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amlogic-usbdl : unsigned code loader for Amlogic BootROM
In previous posts, we explained how to reverse the USB stack in the Exynos bootROM , which led to the discovery of a critical bug . After reproducing this methodology on Amlogic bootROM recently dumped/...
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Dump Amlogic S905D3 BootROM from Khadas VIM3L board
This post describes how to dump bootROM from Amlogic S905D3 SoC using Khadas VIM3L board . Since this board doesn't use Secure Boot, we can execute custom code in Secure World (a.k.a TrustZone) without exploiting any vulnerability. In addition, the board
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SVE-2019-13963 : Remote stack overflow in Samsung baseband caused by malformed IMMEDIATE ASSIGNMENT message
Description When Samsung Shannon baseband receives message IMMEDIATE ASSIGNMENT (9.1.18 in GSM/04.08 ) from network, the length of the Mobile Allocation IE (GSM/04.08 10.5.2.21) is not properly checked. Mobile allocation data is directly copied to...
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