Re:Plug’nPwn – Connect to Jailbreak
by penwellr on Tuesday October 13, 2020 @12:43PM
(#24767251)
rickmark here: Sorry no, that's inaccurate. The T2 provides MacEFI.im4 to the Intel processor by emulating a flash controller over eSPI. So by modifying this file, and removing signature checks you can run any payload you like (see the EFI replacement video)
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Re:Plug’nPwn – Connect to Jailbreak
by MuffinFlavored on Tuesday October 13, 2020 @01:23PM
(#24767651)
So there is some kind of signature defeat involved, correct?
Yes, sigchecks had to be patched out of the kernel. And yes, it does not persist T2 reboot, but T2 only reboots if you hold power button for 5 sec. MacOS "reboot" does _not_ reboot T2.