Merge branch 'apf-info' of https://github.com/gregory-m/metasploit-framework into gregory-m-apf-info
sinn3r
commit
afd1af6377
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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::Auxiliary
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include Msf::Auxiliary::Report
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include Msf::Auxiliary::Scanner
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include Msf::Exploit::Remote::Tcp
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def initialize(info={})
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super(update_info(info,
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'Name' => 'Apple Filing Protocol Info Enumerator',
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'Description' => %q{
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This module fetch AFP server information.
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Including Server name, network address, supported AFP versions,
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signature, machine type ,and server flags.
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},
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'References' =>
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[
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[ 'URL', 'https://developer.apple.com/library/mac/#documentation/Networking/Reference/AFP_Reference/Reference/reference.html' ]
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],
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'Author' => [ 'Gregory Man <man.gregory[at]gmail.com>' ],
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'License' => MSF_LICENSE
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))
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register_options(
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[
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Opt::RPORT(548)
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], self.class)
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deregister_options('RHOST')
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end
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def run_host(ip)
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print_status("Scanning IP: #{ip.to_s}")
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begin
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connect
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get_server_info
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rescue ::Timeout::Error
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rescue ::Interrupt
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raise $!
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rescue ::Rex::ConnectionError, ::IOError, ::Errno::ECONNRESET, ::Errno::ENOPROTOOPT
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rescue ::Exception
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print_error("#{rhost}:#{rport} #{$!.class} #{$!}")
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ensure
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disconnect
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end
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end
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def get_server_info
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packet = "\00" # Flag: Request
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packet << "\x03" # Command: FPGetSrvrInfo
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packet << "\x01\x03" # requestID
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packet << "\x00\x00\x00\x00" #Data offset
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packet << "\x00\x00\x00\x00" #Length
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packet << "\x00\x00\x00\x00" #Reserved
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sock.put(packet)
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response = sock.timed_read(1024)
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parse_response(response)
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end
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def parse_response(response)
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flags = response[0]
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command = response[1]
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request_id = response[2..3]
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error_code = response[4..7]
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length = response[8..11]
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reserved = response[12..15]
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body = response[16..length.unpack('N').first + 15]
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raise "Invalid packet length" if body.length != length.unpack('N').first
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machine_type_offset = body[0..1]
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version_count_offset = body[2..3]
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uam_count_offset = body[4..5]
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icon_offset = body[6..7]
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flags = body[8..9]
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server_name_length = body[10]
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server_name_length = server_name_length.unpack("C").first if server_name_length.is_a?(String)
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server_name = read_pascal_string(body, 10)
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pos = 10 + server_name_length + 1
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pos += 1 if pos % 2 != 0 #padding
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server_signature_offset = body[pos..pos + 1]
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network_addresses_count_offset = body[pos + 2..pos + 3]
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directory_names_count_offset = body[pos + 4..pos + 5]
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utf8_server_name_offset = body[pos + 6..pos + 7]
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machine_type = read_pascal_string(body, machine_type_offset)
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versions = read_array(body, version_count_offset)
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uams = read_array(body, uam_count_offset)
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num_signature_offset = server_signature_offset.unpack('n').first
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server_signature = body[num_signature_offset..num_signature_offset + 15]
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directories = read_array(body, directory_names_count_offset)
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utf8_server_name = read_utf8_pascal_string(body, utf8_server_name_offset)
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parsed_flags = parse_flags(flags)
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network_addresses = read_array(body, network_addresses_count_offset, true)
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parsed_network_addresses = parse_network_addresses(network_addresses)
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#report
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report_info = "Server Flags: 0x#{flags.unpack('H*').first}\n" +
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format_flags_report(parsed_flags) +
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" Server Name: #{server_name} \n" +
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" Machine Type: #{machine_type} \n" +
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" AFP Versions: #{versions.join(', ')} \n" +
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" UAMs: #{uams.join(', ')}\n" +
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" Server Signature: #{server_signature.unpack("H*").first.to_s}\n" +
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" Server Network Address: \n" +
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format_addresses_report(parsed_network_addresses) +
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" UTF8 Server Name: #{utf8_server_name}"
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print_status("#{rhost}:#{rport} APF:\n #{report_info}")
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report_note(:host => datastore['RHOST'],
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:proto => 'TCP',
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:port => datastore['RPORT'],
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:type => 'afp_server_info',
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:data => {
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:server_name => Iconv.conv("UTF-8//IGNORE", "US-ASCII", server_name),
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:flags => { :raw => "0x#{flags.unpack('H*').first}", :parsed => parsed_flags },
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:machine_type => machine_type,
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:afp_versions => versions,
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:uams => uams,
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:server_signature => server_signature.unpack("H*").first.to_s,
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:network_addresses => parsed_network_addresses,
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:utf8_server_name => utf8_server_name
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})
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end
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def parse_network_addresses(network_addresses)
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parsed_addreses = []
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network_addresses.each do |address|
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case address[0].is_a?(String) ? address[0].unpack('C').first : address[0]
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when 0 #Reserved
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next
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when 1 # Four-byte IP address
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parsed_addreses << IPAddr.ntop(address[1..4]).to_s
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when 2 # Four-byte IP address followed by a two-byte port number
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parsed_addreses << "#{IPAddr.ntop(address[1..4])}:#{address[5..6].unpack("n").first}"
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when 3 # DDP address (depricated)
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next
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when 4 # DNS name (maximum of 254 bytes)
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parsed_addreses << address[1..address.length - 2]
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when 5 # This functionality is deprecated.
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next
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when 6 # IPv6 address (16 bytes)
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parsed_addreses << "[#{IPAddr.ntop(address[1..16])}]"
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when 7 # IPv6 address (16 bytes) followed by a two-byte port number
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parsed_addreses << "[#{IPAddr.ntop(address[1..16])}]:#{address[17..18].unpack("n").first}"
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else # Something wrong?
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raise "Error pasing network addresses"
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end
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end
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return parsed_addreses
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end
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def parse_flags(flags)
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flags = flags.unpack("n").first.to_s(2)
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result = {}
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result['Super Client'] = flags[0,1] == '1' ? true : false
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result['UUIDs'] = flags[5,1] == '1' ? true : false
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result['UTF8 Server Name'] = flags[6,1] == '1' ? true : false
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result['Open Directory'] = flags[7,1] == '1' ? true : false
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result['Reconnect'] = flags[8,1] == '1' ? true : false
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result['Server Notifications'] = flags[9,1] == '1' ? true : false
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result['TCP/IP'] = flags[10,1] == '1' ? true : false
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result['Server Signature'] = flags[11,1] == '1' ? true : false
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result['Server Messages'] = flags[12,1] == '1' ? true : false
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result['Password Saving Prohibited'] = flags[13,1] == '1' ? true : false
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result['Password Changing'] = flags[14,1] == '1' ? true : false
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result['Copy File'] = flags[5,1] == '1' ? true : false
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return result
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end
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def read_utf8_pascal_string(str, offset)
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offset = offset.unpack("n").first if offset.is_a?(String)
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length = str[offset..offset+1].unpack("n").first
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return str[offset + 2..offset + length + 1]
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end
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def read_pascal_string(str, offset)
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offset = offset.unpack("n").first if offset.is_a?(String)
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length = str[offset]
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length = length.unpack("C").first if length.is_a?(String)
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return str[offset + 1..offset + length]
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end
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def read_array(str, offset, afp_network_address=false)
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offset = offset.unpack("n").first if offset.is_a?(String)
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size = str[offset]
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size = size.unpack("C").first if size.is_a?(String)
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pos = offset + 1
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result = []
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size.times do
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result << read_pascal_string(str, pos)
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pos += str[pos].is_a?(String) ? str[pos].unpack('C').first : str[pos]
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pos += 1 unless afp_network_address
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end
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return result
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end
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def format_flags_report(parsed_flags)
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report = ''
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parsed_flags.each do |flag, val|
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report << " * #{flag}: #{val.to_s} \n"
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end
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return report
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end
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def format_addresses_report(parsed_network_addresses)
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report = ''
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parsed_network_addresses.each do |val|
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report << " * #{val.to_s} \n"
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end
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return report
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end
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end
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