DE MYSTERIIS DOM JOBSIVS Mac EFI Rootkits - Reverse ...

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DEFENCEEFI FIRMWARE PASSWORD?‣ Hahaha... :(‣ This will prevent some “evil maid” attacks‣ Stops you from changing the boot target‣ USB/Optical/Firewire/Network‣ That’s about it‣ Doesn’t prevent flashing the firmware/option ROMs‣ Doesn’t prevent loading drivers over Thunderbolt‣ There are ways to remove it on some machines‣ Weird RAM removal tricks‣ Not so much with current Macs with soldered-on RAMDe Mysteriis Dom Jobsivs - Black Hat USA2012
DEFENCEUEFI SECURE BOOT‣ Part of the current UEFI spec‣ Describes signing of EFI images (drivers/apps/loaders)‣ Platform Key (PK)‣ Key Exchange Key (KEK)‣ DXE & BDS phases verify sigs of binariesDe Mysteriis Dom Jobsivs - Black Hat USA2012
Page 1 and 2:
DE MYSTERIIS DOM JOBSIVS:MAC EFI RO
Page 3 and 4:
AGENDA‣ Things I will talk aboutI
Page 5 and 6:
INTRODUCTIONI WANT A COOL BOOT SCRE
Page 8 and 9:
II. EFI FUNDAMENTALSDe Mysteriis Do
Page 10 and 11:
EFI ARCHITECTUREPUTTING THE “SUCK
Page 12 and 13: EFI ARCHITECTURE‣ Tables - pointe
Page 14 and 15: EFI ARCHITECTURE‣ Some telling ex
Page 16 and 17: III. DOING BAD THINGS WITHEFIDe Mys
Page 18 and 19: DOING BAD THINGS WITH EFIATTACKING
Page 24 and 25: ATTACKING THE KERNEL‣ Patch the k
Page 26 and 27: ATTACKING THE KERNELStart of kernel
Page 28 and 29: ATTACKING THE KERNELPATCHING THE KE
Page 31 and 32: ATTACKING THE KERNEL‣ What’s ou
Page 33 and 34: ATTACKING THE KERNEL‣ Preparing o
Page 35 and 36: ATTACKING THE KERNELOTHER HALF-ASSE
Page 37 and 38: ‣ In ascending order of awesome
Page 39 and 40: PERSISTENCEEFI SYSTEM PARTITION‣
Page 41 and 42: PERSISTENCEPCI DEVICE EXPANSION ROM
Page 43 and 44: PERSISTENCEFIRMWARE FLASH‣ Apple
Page 46 and 47: PERSISTENCEFIRMWARE FLASH‣ Manipu
Page 48 and 49: V. EVIL MAID ATTACKSDe Mysteriis Do
Page 50 and 51: EVIL MAID ATTACKSWHAT CAN WE DO WIT
Page 52 and 53: EVIL MAID ATTACKSIT’S MY JOB TO K
Page 54 and 55: EVIL MAID ATTACKSTHUNDERBOLT TO GIG
Page 56 and 57: DEMO‣ Evil maid using USB‣ Boot
Page 58 and 59: DEMODe Mysteriis Dom Jobsivs - Blac
Page 60 and 61: IN CASE MY DEMO BROKEHERE’S SOME
Page 64 and 65: DEFENCEUEFI SECURE BOOT‣ Issues
Page 66 and 67: REFERENCES‣ UEFI Spec‣ http://w
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