Webmaster rambling and mental notes
Motorola's Sholes Bootloader Unlocked
3/21/2011

Teh31337one writes "Motorola's locked bootloader for their Sholes-family devices (Droid OG, Milestone, DroidX, Droid 2 etc, not Atrix 4G) has finally been cracked. @nenolod explains on his website: The Motorola Sholes scaffold uses a trusted bootloader environment. Signatures are stored as part of the CDT stored on the NAND flash. mbmloader verifies the declaration on mbm before passing control. mbm verifies all other signatures before allowing the device to boot. There is a vulnerability in the way that Motorola derive the signatures on the ward stored in the CDT. This vulnerability is very simple. Like on the brain* game 3, Motorola forgot to add a random value to the topcount);























































main entry:
in order to mask the private key. This allowed the private key and initialization vector to be cracked. This comes at the time when HTC are also stepping up their attempts at locking down their phones . The anew released LTE flagship — ThunderBolt is their most locked-down phone to date ... They made signed images, a signed kernel, and a signed recovery. They also locked the memory."



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