Rafal Wojtczuk and Joanna Rutkowska - Black Hat
Rafal Wojtczuk and Joanna Rutkowska - Black Hat Rafal Wojtczuk and Joanna Rutkowska - Black Hat
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01.07.2015
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BIOS ROM BIOS FLASH BOOT LOADER OS kernel PCI ROMs PCR Usage (convention) 0 BIOS ROM & FLASH 1 Chipset config 2 PCI ROMs 3 PCI config 4 bootloader 5 bootloader config 6 ... 7 ... 8 e.g. OS kernel PCR0 PCR1 PCR2 PCR3 PCR4 ... TPM
SRTM in practice
- Page 1: Attacking Intel ® Trusted Executio
- Page 4 and 5: Intel ® Trusted Execution Technolo
- Page 6 and 7: TPM 1.2 Passive I/O device (master-
- Page 8 and 9: PCR “extend” operation PCRN+1 =
- Page 10 and 11: TPM seal/unseal example # echo 'Sec
- Page 12 and 13: Both seal/unseal and quote operatio
- Page 16 and 17: Example #1: Disk Encryption Disk en
- Page 18 and 19: So, a malware can sniff it…
- Page 20 and 21: Example #2: User’s Picture Test :
- Page 22 and 23: Problems with SRTM
- Page 24 and 25: Dynamic Root of Trust Measurement (
- Page 26 and 27: A VMM we want to load (Currently un
- Page 28 and 29: TXT bottom line TXT late launch can
- Page 30 and 31: GRUB (1 st stage) GRUB (2 nd stage)
- Page 32: First we start “trusted” Xen (b
- Page 36 and 37: Thanks to tboot only when the trust
- Page 38: Tboot Demo #1: sealing to a trusted
- Page 42 and 43: SENTER is not obligatory!!! TXT and
- Page 44 and 45: Why would a user or an attacker be
- Page 46 and 47: AMD Presidio AMD’s technology sim
- Page 48 and 49: SRTM/DRTM (launch-time protection)
- Page 50 and 51: TXT: exciting new technology with g
- Page 52 and 53: Q: What is more privileged than a k
- Page 54 and 55: Introducing “Ring -2” SMM can a
- Page 56 and 57: SMM vs. TXT?
- Page 58 and 59: Q: Does TXT measure currently used
- Page 60 and 61: Q:So, how does the SENTER deal with
- Page 62 and 63: TXT attack sketch (using tboot+Xen
SRTM in practice
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