Add feature #5398
git-svn-id: file:///home/svn/framework3/trunk@14032 4d416f70-5f16-0410-b530-b9f4589650daunstable
Wei Chen
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17f518897f
commit
14cf0deb29
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@ -0,0 +1,183 @@
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##
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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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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit4 < Msf::Auxiliary
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include Msf::Exploit::Remote::Tcp
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include Msf::Auxiliary::Report
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def initialize(info={})
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super(update_info(info,
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'Name' => 'HTTP SSL Certificate Impersonation',
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'Version' => '$Revision$',
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'Author' => ' Chris John Riley',
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'License' => MSF_LICENSE,
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'Description' => %q{
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This module request a copy of the remote SSL certificate and creates a local
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(self.signed) version using the information from the remote version. The module
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then Outputs (PEM|DER) format private key / certificate and a combined version
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for use in Apache or other Metasploit modules requiring SSLCert Inputs for private
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key / CA cert have been provided for those with diginator certs hanging about!
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}
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))
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register_options(
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[
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Opt::RPORT(443),
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OptString.new('OUT_FORMAT', [true, "Output format PEM / DER", 'PEM']),
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OptString.new('EXPIRATION', [false, "Date the new cert should expire (e.g. 06 May 2012, Yesterday or Now)", '']),
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OptString.new('PRIVKEY', [false, "Sign the cert with your own CA private key ;)", '']),
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OptString.new('PRIVKEY_PASSWORD', [false, "Password for private key specified in PRIV_KEY (if applicable)", '']),
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OptString.new('CA_CERT', [false, "CA Public certificate", '']),
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OptString.new('ADD_CN', [false, "Add CN to match spoofed site name (e.g. *.example.com)", '']),
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], self.class)
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end
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def run
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print_status("Connecting to #{rhost}:#{rport}")
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if (datastore['PRIVKEY'] != '' and datastore['CA_CERT'] != '')
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print_status("Signing generated certificate with provided KEY and CA Certificate")
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if datastore['PRIVKEY_PASSWORD'] != ''
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ca_key = OpenSSL::PKey::RSA.new(File.read(datastore['PRIVKEY']), datastore['PRIVKEY_PASSWORD'])
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else
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ca_key = OpenSSL::PKey::RSA.new(File.read(datastore['PRIVKEY']))
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end
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ca = OpenSSL::X509::Certificate.new(File.read(datastore['CA_CERT']))
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elsif (datastore['PRIVKEY'] != '' or datastore['CA_CERT'] != '')
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print_error("CA Certificate AND Private Key must be provided!")
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return
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end
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begin
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connect(true, {"SSL" => true}) # Force SSL even for RPORT != 443
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cert = OpenSSL::X509::Certificate.new(sock.peer_cert) # Get certificate from remote rhost
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disconnect
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rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout => e
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rescue ::Timeout::Error, ::Errno::EPIPE => e
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print_error(e.message)
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end
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if(not cert)
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print_error("#{rhost} No certificate subject or CN found")
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return
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end
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print_status("Copying certificate #{cert.subject.to_s} from #{rhost}:#{rport}")
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vprint_status("Original Certifcate Details\n\n#{cert.to_text}")
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begin
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keylength = /Key: \((\d+)/i.match(cert.signature_algorithm)[1] # Grab keylength from target cert
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rescue
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keylength = 1024
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end
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begin
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hashtype = /Algorithm: (\w+)With/i.match(cert.to_text)[1] # Grab hashtype from target cert
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rescue
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hashtype = 'sha1'
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end
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new_cert = OpenSSL::X509::Certificate.new
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ef = OpenSSL::X509::ExtensionFactory.new#(nil,new_cert)
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# Duplicate information from the remote certificate
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entries = ['version','serial', 'subject', 'not_before','not_after']
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entries.each do | ent |
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eval("new_cert.#{ent} = cert.#{ent}")
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end
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if datastore['ADD_CN'] != ''
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new_cert.subject = OpenSSL::X509::Name.new(new_cert.subject.to_a << ["CN", "#{datastore['ADD_CN']}"])
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print_status("Adding #{datastore['ADD_CN']} to the end of the certificate subject")
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vprint_status("Certificate Subject: #{new_cert.subject}")
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end
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if datastore['EXPIRATION'] != ''
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print_status("Altering certificate expiry information to #{datastore['EXPIRATION']}")
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case datastore['EXPIRATION'].downcase
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when 'yesterday'
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new_cert.not_after = 24.hours.ago
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new_cert.not_before = 1.year.ago - 24.hours # set start date (1 year cert)
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vprint_status("Certificate expiry date set to #{new_cert.not_after}")
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when 'now'
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new_cert.not_after = Time.now
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new_cert.not_before = 1.year.ago # set start date (1 year cert)
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vprint_status("Certificate expiry date set to #{new_cert.not_after}")
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else
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new_cert.not_after = Time.parse(datastore['EXPIRATION'])
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new_cert.not_before = Time.parse(datastore['EXPIRATION']) - 1.year # set start date (1 year cert)
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vprint_status("Certificate expiry date set to #{new_cert.not_after}")
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end
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end
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# Alter serial to avoid duplicate issuer/serial detection
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if (cert.serial.to_s.length > 1)
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new_cert.serial = (cert.serial.to_s[0..-2] + rand(0xFF).to_s).to_i
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else
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new_cert.serial = rand(0xFFFF)
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end
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if datastore['PRIVKEY'] != ''
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new_cert.public_key = ca_key.public_key
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ef.subject_certificate = ca
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ef.issuer_certificate = ca
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new_cert.issuer = ca.subject
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print_status("Using private key #{datastore['PRIVKEY']}")
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else
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new_key = OpenSSL::PKey::RSA.new(keylength.to_i)
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new_cert.public_key = new_key.public_key
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ef.subject_certificate = new_cert
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ef.issuer_certificate = new_cert
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if datastore['ADD_CN'] != ''
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new_cert.issuer = new_cert.subject
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else
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new_cert.issuer = cert.subject
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end
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end
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new_cert.extensions = [
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ef.create_extension("basicConstraints","CA:FALSE", true),
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ef.create_extension("subjectKeyIdentifier","hash"),
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]
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if datastore['PRIVKEY'] != ''
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new_cert.sign(ca_key, eval("OpenSSL::Digest::#{hashtype.upcase}.new"))
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new_key = ca_key # Set for file output
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else
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new_cert.sign(new_key, eval("OpenSSL::Digest::#{hashtype.upcase}.new"))
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end
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vprint_status("Duplicate Certificate Details\n\n#{new_cert.to_text}")
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print_status("Beginning export of certificate files")
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priv_key = new_key.send(eval("\"to_#{datastore['OUT_FORMAT'].downcase}\""))
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cert_crt = new_cert.send(eval("\"to_#{datastore['OUT_FORMAT'].downcase}\""))
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combined = new_key.send("to_pem") + new_cert.send("to_pem")
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addr = Rex::Socket.getaddress(rhost) # Convert rhost to ip for DB
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print_status("Creating looted key/crt/pem files for #{rhost}:#{rport}")
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p = store_loot("#{datastore['RHOST'].downcase}_key", datastore['OUT_FORMAT'].downcase, addr, priv_key, "imp_ssl.key", "Impersonate_SSL")
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print_good("key: #{p}")
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p = store_loot("#{datastore['RHOST'].downcase}_cert", datastore['OUT_FORMAT'].downcase, addr, cert_crt, "imp_ssl.crt", "Impersonate_SSL")
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print_good("crt: #{p}")
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p = store_loot("#{datastore['RHOST'].downcase}_pem", "pem", addr, combined, "imp_ssl.pem", "Impersonate_SSL")
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print_good("pem: #{p}")
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end
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end
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