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CLOUDBURST A VMware Guest to Host Escape Story
CLOUDBURST
A VMware Guest to Host Escape Story
Kostya Kortchinsky
Immunity, Inc.
BlackHat USA 2009, Las Vegas
06/29/09 1
Introduction
06/29/09 2
VMware Architecture
VMware Architecture
Devices are emulated on the Host
06/29/09 3
Why devices?
Why devices?
● I dont have enough lowlevel system Mojo ☹
● They are common to all VMware products
● They “run” on the Host
– vmwarevmx process
● They can be accessed from the guest
– Through Port I/O or memorymapped I/O
● They are written in C/C++
● They sometimes parse some complex data!
06/29/09 4
Devices on a VM
Devices on a VM
1.Video adapter
2.Floppy controller
3.IDE controller
4.Keyboard controller
5.Network Adapter
6.COM/LPT controller
7.SCSI controller(s)
8.DMA controller
9.USB controller (WKS)
10.Audio adapter (WKS)
Windows XP SP3 (ESX)
06/29/09 5
CLOUDBURST
CLOUDBURST
● Combination of 3
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