local dns = require "dns" local ipOps = require "ipOps" local nmap = require "nmap" local shortport = require "shortport" local stdnse = require "stdnse" local string = require "string" local table = require "table" description = [[ Performs a domain lookup using the edns-client-subnet option which allows clients to specify the subnet that queries supposedly originate from. The script uses this option to supply a number of geographically distributed locations in an attempt to enumerate as many different address records as possible. The script also supports requests using a given subnet. * http://tools.ietf.org/html/draft-vandergaast-edns-client-subnet-00 ]] --- -- @usage -- nmap -sU -p 53 --script dns-client-subnet-scan --script-args \ -- dns-client-subnet-scan.domain=www.example.com, \ -- dns-client-subnet-scan.address=192.168.0.1 \ -- [,dns-client-subnet.nameserver=8.8.8.8] \ -- [,dns-client-subnet.mask=24] -- nmap --script dns-client-subnet-scan --script-args \ -- dns-client-subnet-scan.domain=www.example.com, \ -- dns-client-subnet-scan.address=192.168.0.1 \ -- dns-client-subnet.nameserver=8.8.8.8, \ -- [,dns-client-subnet.mask=24] -- -- @output -- 53/udp open domain udp-response -- | dns-client-subnet-scan: -- | www.google.com -- | 1.2.3.4 -- | 5.6.7.8 -- | 9.10.11.12 -- | 13.14.15.16 -- | . -- | . -- |_ . --- -- @args dns-client-subnet.domain The domain to lookup eg. www.example.org -- @args dns-client-subnet.address The client subnet address to use -- @args dns-client-subnet.mask [optional] The number of bits to use as subnet mask (default: 24) -- @args dns-client-subnet.nameserver [optional] nameserver to use. (default = host.ip) -- author = "John R. Bond" license = "Simplified (2-clause) BSD license--See https://nmap.org/svn/docs/licenses/BSD-simplified" categories = {"discovery", "safe"} local argNS = stdnse.get_script_args(SCRIPT_NAME .. '.nameserver') local argDomain = stdnse.get_script_args(SCRIPT_NAME .. '.domain') local argMask = stdnse.get_script_args(SCRIPT_NAME .. '.mask') or 24 local argAddr = stdnse.get_script_args(SCRIPT_NAME .. '.address') prerule = function() return argDomain and nmap.address_family() == "inet" end portrule = function(host, port) if ( nmap.address_family() ~= "inet" ) then return false end if not shortport.port_or_service(53, "domain", {"tcp", "udp"})(host, port) then return false end -- only check tcp if udp is not open or open|filtered if port.protocol == 'tcp' then local tmp_port = nmap.get_port_state(host, {number=port.number, protocol="udp"}) if tmp_port then return not string.match(tmp_port.state, '^open') end end return true end local areaIPs = { A4 = {ip=47763456, desc="GB,A4,Bath"}, A5 = {ip=1043402336, desc="GB,A5,Biggleswade"}, A6 = {ip=1364222182, desc="FR,A6,Chèvremont"}, A7 = {ip=35357952, desc="GB,A7,Birmingham"}, A8 = {ip=1050694009, desc="FR,A8,Romainville"}, A9 = {ip=534257152, desc="FR,A9,Montpellier"}, AB = {ip=2156920832, desc="CA,AB,Edmonton"}, AK = {ip=202125312, desc="US,AK,Anchorage"}, B1 = {ip=1041724648, desc="FR,B1,Robert"}, B2 = {ip=35138048, desc="GB,B2,Bournemouth"}, B3 = {ip=33949696, desc="FR,B3,Toulouse"}, B4 = {ip=1050704998, desc="FR,B4,Lomme"}, B5 = {ip=35213312, desc="GB,B5,Wembley"}, B6 = {ip=773106752, desc="FR,B6,Amiens"}, B7 = {ip=35148800, desc="GB,B7,Bristol"}, B8 = {ip=786088496, desc="FR,B8,Valbonne"}, B9 = {ip=33753088, desc="FR,B9,Lyon"}, BC = {ip=201674096, desc="CA,BC,Victoria"}, C1 = {ip=522223616, desc="FR,C1,Strasbourg"}, C2 = {ip=41598976, desc="GB,C2,Halifax"}, C3 = {ip=534676272, desc="GB,C3,Cambridge"}, C5 = {ip=1043410032, desc="GB,C5,Runcorn"}, C6 = {ip=773987544, desc="GB,C6,Saltash"}, C7 = {ip=35165184, desc="GB,C7,Coventry"}, C8 = {ip=35248128, desc="GB,C8,Croydon"}, C9 = {ip=1892301824, desc="PH,C9,Iloilo"}, D1 = {ip=35414016, desc="GB,D1,Darlington"}, D2 = {ip=35164672, desc="GB,D2,Derby"}, D3 = {ip=35301376, desc="GB,D3,Chesterfield"}, D4 = {ip=1043450424, desc="GB,D4,Barnstaple"}, D5 = {ip=2036385792, desc="PH,D5,Legaspi"}, D7 = {ip=41451520, desc="GB,D7,Dudley"}, D8 = {ip=35279104, desc="GB,D8,Durham"}, D9 = {ip=460228608, desc="PH,D9,Manila"}, DC = {ip=68514448, desc="US,DC,Washington"}, E1 = {ip=1040645056, desc="GB,E1,Beverley"}, E2 = {ip=35206912, desc="GB,E2,Brighton"}, E3 = {ip=47822848, desc="GB,E3,Enfield"}, E4 = {ip=39874560, desc="GB,E4,Colchester"}, E5 = {ip=35270656, desc="GB,E5,Gateshead"}, E6 = {ip=1368606720, desc="GB,E6,Coleford"}, E7 = {ip=1051376056, desc="GB,E7,Woolwich"}, E8 = {ip=1044737528, desc="GB,E8,Hackney"}, F1 = {ip=1043451648, desc="GB,F1,Hammersmith"}, F2 = {ip=35176448, desc="GB,F2,Basingstoke"}, F4 = {ip=47998976, desc="GB,F4,Harrow"}, F5 = {ip=1040622704, desc="GB,F5,Hart"}, F6 = {ip=35230720, desc="GB,F6,Romford"}, F8 = {ip=35214848, desc="GB,F8,Watford"}, F9 = {ip=41693184, desc="GB,F9,Uxbridge"}, G1 = {ip=41437184, desc="GB,G1,Hounslow"}, G2 = {ip=35188224, desc="GB,G2,Ryde"}, G3 = {ip=41861120, desc="GB,G3,Islington"}, G4 = {ip=1040704992, desc="GB,G4,Kensington"}, G5 = {ip=41506816, desc="GB,G5,Ashford"}, G6 = {ip=786894336, desc="GB,G6,Hull"}, G8 = {ip=40112128, desc="GB,G8,Huddersfield"}, G9 = {ip=1380217968, desc="GB,G9,Knowsley"}, H1 = {ip=1044731464, desc="GB,H1,Lambeth"}, H2 = {ip=3512017264, desc="GB,H2,Earby"}, H3 = {ip=35221504, desc="GB,H3,Leeds"}, H4 = {ip=35158016, desc="GB,H4,Leicester"}, H5 = {ip=1043402716, desc="GB,H5,Loughborough"}, H6 = {ip=41732608, desc="GB,H6,Catford"}, H7 = {ip=41863168, desc="GB,H7,Lincoln"}, H8 = {ip=35294976, desc="GB,H8,Liverpool"}, H9 = {ip=35196928, desc="GB,H9,London"}, I1 = {ip=35253760, desc="GB,I1,Luton"}, I2 = {ip=35263488, desc="GB,I2,Manchester"}, I3 = {ip=47714304, desc="GB,I3,Rochester"}, I4 = {ip=1298651136, desc="GB,I4,Morden"}, I5 = {ip=1382961968, desc="GB,I5,Middlesborough"}, I8 = {ip=1371219061, desc="GB,I8,Stepney"}, I9 = {ip=35282944, desc="GB,I9,Norwich"}, IA = {ip=201438272, desc="US,IA,Urbandale"}, J1 = {ip=523578880, desc="GB,J1,Daventry"}, J2 = {ip=788492344, desc="GB,J2,Grimsby"}, J3 = {ip=3282790208, desc="GB,J3,Flixborough"}, J5 = {ip=41759232, desc="GB,J5,Wallsend"}, J6 = {ip=1043412268, desc="GB,J6,Alnwick"}, J7 = {ip=41783296, desc="GB,J7,Harrogate"}, J8 = {ip=35160064, desc="GB,J8,Nottingham"}, J9 = {ip=47742976, desc="GB,J9,Newark"}, JA = {ip=1476096512, desc="RU,JA,Kurilsk"}, K1 = {ip=48015360, desc="GB,K1,Oldham"}, K2 = {ip=1043402360, desc="GB,K2,Kidlington"}, K3 = {ip=39956480, desc="GB,K3,Peterborough"}, K4 = {ip=41735168, desc="GB,K4,Plymouth"}, K5 = {ip=775747568, desc="GB,K5,Poole"}, K6 = {ip=774162844, desc="GB,K6,Portsmouth"}, K7 = {ip=41746432, desc="GB,K7,Reading"}, K8 = {ip=35229696, desc="GB,K8,Ilford"}, L1 = {ip=47773696, desc="GB,L1,Twickenham"}, L2 = {ip=48103424, desc="GB,L2,Rochdale"}, L3 = {ip=35304192, desc="GB,L3,Rotherham"}, L4 = {ip=1043416984, desc="GB,L4,Oakham"}, L5 = {ip=772988024, desc="GB,L5,Salford"}, L6 = {ip=35336192, desc="GB,L6,Shrewsbury"}, L7 = {ip=1043419464, desc="GB,L7,Oldbury"}, L8 = {ip=39936000, desc="GB,L8,Lytham"}, L9 = {ip=35304448, desc="GB,L9,Sheffield"}, M1 = {ip=35384320, desc="GB,M1,Slough"}, M2 = {ip=41470976, desc="GB,M2,Solihull"}, M4 = {ip=35139584, desc="GB,M4,Southampton"}, M5 = {ip=1043402176, desc="GB,M5,Southend-on-sea"}, M6 = {ip=773986248, desc="GB,M6,Hill"}, M8 = {ip=1443330688, desc="GB,M8,Camberwell"}, M9 = {ip=35322880, desc="GB,M9,Stafford"}, MB = {ip=1076550400, desc="CA,MB,Winnipeg"}, MI = {ip=201393888, desc="US,MI,Saginaw"}, N1 = {ip=1318741928, desc="GB,N1,Haydock"}, N2 = {ip=35266560, desc="GB,N2,Stockport"}, N3 = {ip=41832448, desc="GB,N3,Stockton-on-tees"}, N4 = {ip=3231559680, desc="GB,N4,Longport"}, N5 = {ip=1043424608, desc="GB,N5,Beccles"}, N6 = {ip=35276800, desc="GB,N6,Sunderland"}, N7 = {ip=41551872, desc="GB,N7,Tadworth"}, N8 = {ip=41697280, desc="GB,N8,Sutton"}, N9 = {ip=35252736, desc="GB,N9,Swindon"}, NB = {ip=2211053568, desc="CA,NB,Fredericton"}, ND = {ip=201473536, desc="US,ND,Bismarck"}, NH = {ip=201772808, desc="US,NH,Laconia"}, NJ = {ip=201352704, desc="US,NJ,Piscataway"}, NS = {ip=3226164992, desc="CA,NS,Halifax"}, NT = {ip=3332472320, desc="CA,NT,Yellowknife"}, NV = {ip=202261184, desc="US,NV,Henderson"}, O2 = {ip=40251392, desc="GB,O2,Telford"}, O3 = {ip=35230208, desc="GB,O3,Grays"}, O4 = {ip=35318784, desc="GB,O4,Torquay"}, O5 = {ip=1368498352, desc="GB,O5,Poplar"}, O6 = {ip=1546138112, desc="GB,O6,Stretford"}, O7 = {ip=35219456, desc="GB,O7,Wakefield"}, O8 = {ip=35321856, desc="GB,O8,Walsall"}, O9 = {ip=1359108248, desc="GB,O9,Walthamstow"}, ON = {ip=201620304, desc="CA,ON,Ottawa"}, P1 = {ip=1043431736, desc="GB,P1,Wandsworth"}, P2 = {ip=35260416, desc="GB,P2,Warrington"}, P3 = {ip=41766912, desc="GB,P3,Nuneaton"}, P4 = {ip=41893888, desc="GB,P4,Newbury"}, P5 = {ip=772987648, desc="GB,P5,Westminster"}, P7 = {ip=41466624, desc="GB,P7,Wigan"}, P8 = {ip=48087808, desc="GB,P8,Salisbury"}, P9 = {ip=41793536, desc="GB,P9,Maidenhead"}, Q1 = {ip=41457664, desc="GB,Q1,Wallasey"}, Q2 = {ip=1040739840, desc="GB,Q2,Wokingham"}, Q3 = {ip=35323392, desc="GB,Q3,Wolverhampton"}, Q4 = {ip=539624744, desc="GB,Q4,Redditch"}, Q5 = {ip=1043415688, desc="GB,Q5,Wetherby"}, Q6 = {ip=1043439984, desc="GB,Q6,Antrim"}, Q7 = {ip=41811456, desc="GB,Q7,Newtownards"}, Q8 = {ip=1347208672, desc="GB,Q8,Armagh"}, Q9 = {ip=1044726432, desc="GB,Q9,Connor"}, QC = {ip=2210594816, desc="CA,QC,Varennes"}, R1 = {ip=1482707288, desc="GB,R1,Ballymoney"}, R3 = {ip=47828992, desc="GB,R3,Belfast"}, R4 = {ip=1051352576, desc="GB,R4,Eden"}, R5 = {ip=1056827328, desc="GB,R5,Castlereagh"}, R6 = {ip=47895040, desc="GB,R6,Coleraine"}, R7 = {ip=3270400320, desc="GB,R7,Dunmore"}, R8 = {ip=1367996672, desc="GB,R8,Portadown"}, R9 = {ip=773985608, desc="GB,R9,Square"}, RI = {ip=67285760, desc="US,RI,Providence"}, S1 = {ip=1040409048, desc="GB,S1,Drummond"}, S2 = {ip=1353842208, desc="GB,S2,Enniskillen"}, S3 = {ip=1368133632, desc="GB,S3,Larne"}, S4 = {ip=1446384520, desc="GB,S4,Ardmore"}, S5 = {ip=1043419184, desc="GB,S5,Lisburn"}, S6 = {ip=1056826304, desc="GB,S6,Londonderry"}, S7 = {ip=1359111383, desc="GB,S7,Curran"}, S8 = {ip=1369435392, desc="GB,S8,Waterfoot"}, S9 = {ip=1043434592, desc="GB,S9,Newry"}, T1 = {ip=3242033152, desc="GB,T1,Jordanstown"}, T2 = {ip=1043402000, desc="GB,T2,Bangor"}, T3 = {ip=1043429728, desc="GB,T3,Omagh"}, T4 = {ip=1043429520, desc="GB,T4,Strabane"}, T5 = {ip=39849984, desc="GB,T5,Aberdeen"}, T6 = {ip=1043407024, desc="GB,T6,Inverurie"}, T7 = {ip=47917056, desc="GB,T7,Forfar"}, T8 = {ip=1051457600, desc="GB,T8,Sandbank"}, T9 = {ip=1043429424, desc="GB,T9,Melrose"}, TX = {ip=201673024, desc="US,TX,Mckinney"}, U1 = {ip=1043400976, desc="GB,U1,Alloa"}, U2 = {ip=1353815544, desc="GB,U2,Langholm"}, U3 = {ip=1042190336, desc="GB,U3,Dundee"}, U4 = {ip=1043428036, desc="GB,U4,Newmilns"}, U5 = {ip=1051334704, desc="GB,U5,Bishopbriggs"}, U6 = {ip=1040628912, desc="GB,U6,Musselburgh"}, U7 = {ip=1056881248, desc="GB,U7,Barrhead"}, U8 = {ip=35188736, desc="GB,U8,Edinburgh"}, U9 = {ip=1318744616, desc="GB,U9,Blackstone"}, V1 = {ip=47947776, desc="GB,V1,Kirkcaldy"}, V2 = {ip=35190784, desc="GB,V2,Glasgow"}, V4 = {ip=1043417560, desc="GB,V4,Greenock"}, V5 = {ip=3570359128, desc="GB,V5,Borthwick"}, V6 = {ip=1398983520, desc="GB,V6,Findhorn"}, V7 = {ip=1043452928, desc="GB,V7,Saltcoats"}, V8 = {ip=523564544, desc="GB,V8,Bothwell"}, V9 = {ip=1353706504, desc="GB,V9,Redland"}, VT = {ip=201355264, desc="US,VT,Brattleboro"}, W1 = {ip=1042195200, desc="GB,W1,Perth"}, W2 = {ip=1043412560, desc="GB,W2,Paisley"}, W4 = {ip=1056825616, desc="GB,W4,Dundonald"}, W5 = {ip=1040411544, desc="GB,W5,Douglas"}, W6 = {ip=41547776, desc="GB,W6,Stirling"}, W7 = {ip=1443523584, desc="GB,W7,Bearsden"}, W8 = {ip=534572928, desc="GB,W8,Cross"}, W9 = {ip=1042221056, desc="GB,W9,Livingston"}, WA = {ip=201806720, desc="US,WA,Issaquah"}, WY = {ip=135495936, desc="US,WY,Casper"}, X1 = {ip=1043425760, desc="GB,X1,Valley"}, X2 = {ip=773988152, desc="GB,X2,Victoria"}, X3 = {ip=35149824, desc="GB,X3,Bridgend"}, X4 = {ip=1043402272, desc="GB,X4,Blackwood"}, X5 = {ip=39946240, desc="GB,X5,Cardiff"}, X6 = {ip=1043435700, desc="GB,X6,Aberystwyth"}, X7 = {ip=1043408760, desc="GB,X7,Llanelli"}, X8 = {ip=1368926208, desc="GB,X8,Abergele"}, X9 = {ip=1043411032, desc="GB,X9,Rhyl"}, Y1 = {ip=1043407256, desc="GB,Y1,Holywell"}, Y2 = {ip=1043401576, desc="GB,Y2,Caernarfon"}, Y4 = {ip=1043428692, desc="GB,Y4,Cwmbran"}, Y5 = {ip=3265794544, desc="GB,Y5,Cwmafan"}, Y6 = {ip=35153920, desc="GB,Y6,Newport"}, Y7 = {ip=1353763984, desc="GB,Y7,Haverfordwest"}, Y8 = {ip=1043430344, desc="GB,Y8,Welshpool"}, Z1 = {ip=40116224, desc="GB,Z1,Swansea"}, Z2 = {ip=40189952, desc="GB,Z2,Pontypool"}, Z3 = {ip=35147776, desc="GB,Z3,Barry"}, Z4 = {ip=40321024, desc="GB,Z4,Wrexham"} } local get_addresses = function(address, mask, domain, nameserver, port) -- translate the IP's in the areaIPs to strings, as this is what the -- DNS library expects if ( "number" == type(address) ) then address = ipOps.fromdword(address) local a, b, c, d = address:match("(%d+)%.(%d+)%.(%d+)%.(%d+)") address = ("%d.%d.%d.%d"):format(d,c,b,a) end local subnet = { family = nmap.address_family(), address = address, mask = mask } local status, resp = dns.query(domain, {host = nameserver, port=port.number, protocol=port.protocol, retAll=true, subnet=subnet}) if ( not(status) ) then return end if ( "table" ~= type(resp) ) then resp = { resp } end return resp end action = function(host, port) if ( not(argDomain) ) then return stdnse.format_output(false, SCRIPT_NAME .. ".domain was not specified") end local nameserver = (host and host.ip) or argNS -- if we have no nameserver argument and no host, we don't have sufficient -- information to continue, abort if not nameserver then return nil end -- if we are running as a prerule pick some defaults port = port or { number = "53", protocol ="udp" } local addrs = argAddr or areaIPs if ( "string" == type(addrs) ) then addrs = {{ ip = addrs }} end local lookup, result = {}, { name = argDomain } for _,ip in pairs(addrs) do for _, addr in ipairs( get_addresses (ip.ip, argMask, argDomain, nameserver, port) ) do lookup[addr] = true end end for addr in pairs(lookup) do table.insert(result, addr) end table.sort(result) return stdnse.format_output(true, result) end