3 ms·
Selected Excerpts: "PCI-to-PCI transfers are not marshalled by the OS o PCI-to-PCI between the NIC and the GPU" [...] "a PCI card has DMA over the whole RAM
by peter_d_sherman 7y ago
Selected Excerpts:
"PCI-to-PCI transfers are not marshalled by the OS
o PCI-to-PCI between the NIC and the GPU"
[...]
"a PCI card has DMA over the whole RAM
o we can play in memory and the OS shall never know"
[...]
References
"Broadcom firmware development kit: http://www.broadcom.com/products/communications_processors_downloads.php http://www.broadcom.com/products/communications_processors_d... [Not currently online, use Wayback Machine or Google keyword search]
Papers by John Heasman (ACPI, BIOS and PCI rootkits):
http://www.nextgenss.com/research/papers/ http://www.nextgenss.com/research/papers/ [Not currently online, use Wayback Machine or Google keyword search]
Implementing_And_Detecting_A_PCI_Rootkit.pdf
Network Interface Firmware Back Door with Tigon2, eEye Industry Newsletter, 25th April 2007,
http://www.eeye.com/html/resources/newsletters/vice/VI20070425.html http://www.eeye.com/html/resources/newsletters/vice/VI200704... [Not currently online, use Wayback Machine or Google keyword search]
A. Singh, Mac OS X Internals, Addison-Wesley, 2006,
http://osxbook.com/book/bonus/chapter4/efiprogramming/ http://osxbook.com/book/bonus/chapter4/efiprogramming/
Rowan Atkinson, “Blackadder”, BBC TV series."
Author's Twitter: https://twitter.com/cynicalsecurity https://twitter.com/cynicalsecurity
(My thoughts: Future Hardware/OS Designers should seriously think about these and related issues...)