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|
description = [[
Finds hostnames that resolve to the target's IP address by querying the online database:
* http://www.ip2hosts.com ( Bing Search Results )
The script is in the "external" category because it sends target IPs to a third party in order to query their database.
]]
---
-- @args hostmap.prefix If set, saves the output for each host in a file
-- called "<prefix><target>". The file contains one entry per line.
-- @args newtargets If set, add the new hostnames to the scanning queue.
-- This the names presumably resolve to the same IP address as the
-- original target, this is only useful for services such as HTTP that
-- can change their behavior based on hostname.
--
-- @usage
-- nmap --script hostmap-ip2hosts --script-args 'hostmap-ip2hosts.prefix=hostmap-' <targets>
-- @usage
-- nmap -sn --script hostmap-ip2hosts <target>
-- @output
-- Host script results:
-- | hostmap-ip2hosts:
-- | hosts:
-- | insecure.org
-- | nmap.org
-- | sectools.org
-- | svn.nmap.org
-- | cgi.insecure.org
-- |_ filename: output_nmap.org
-- @xmloutput
-- <table key="hosts">
-- <elem>insecure.org</elem>
-- <elem>nmap.org</elem>
-- <elem>sectools.org</elem>
-- <elem>svn.nmap.org</elem>
-- <elem>cgi.insecure.org</elem>
-- </table>
-- <elem key="filename">output_nmap.org</elem>
---
author = "Paulino Calderon <calderon@websec.mx>"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"external", "discovery"}
local ipOps = require "ipOps"
local io = require "io"
local http = require "http"
local stdnse = require "stdnse"
local string = require "string"
local target = require "target"
local HOSTMAP_BING_SERVER = "www.ip2hosts.com"
local HOSTMAP_DEFAULT_PROVIDER = "ALL"
local write_file
hostrule = function(host)
return not ipOps.isPrivate(host.ip)
end
local function query_bing(ip)
local query = "/csv.php?ip=" .. ip
local response
local entries
response = http.get(HOSTMAP_BING_SERVER, 80, query, {any_af=true})
local hostnames = {}
if not response.status then
return string.format("Error: could not GET http://%s%s", HOSTMAP_BING_SERVER, query)
end
entries = stdnse.strsplit(",", response.body);
for _, entry in pairs(entries) do
if not hostnames[entry] and entry ~= "" then
if target.ALLOW_NEW_TARGETS then
local status, err = target.add(entry)
end
entry = string.gsub(entry, "(https://)", "")
entry = string.gsub(entry, "(http://)", "")
hostnames[#hostnames + 1] = entry
end
end
if #hostnames == 0 then
if not string.find(response.body, "no results") then
return "Error: found no hostnames but not the marker for \"no hostnames found\" (pattern error?)"
end
end
return hostnames
end
action = function(host)
local filename_prefix = stdnse.get_script_args("hostmap.prefix")
local hostnames = {}
local hostnames_str, output_str
local output_tab = stdnse.output_table()
stdnse.debug1("Using database: %s", HOSTMAP_BING_SERVER)
hostnames = query_bing(host.ip)
output_tab.hosts = hostnames
--write to file
if filename_prefix then
local filename = filename_prefix .. stdnse.filename_escape(host.targetname or host.ip)
hostnames_str = stdnse.strjoin("\n", hostnames)
local status, err = write_file(filename, hostnames_str)
if status then
output_tab.filename = filename
else
stdnse.debug1("There was an error saving the file %s:%s", filename, err)
end
end
return output_tab
end
function write_file(filename, contents)
local f, err = io.open(filename, "w")
if not f then
return f, err
end
f:write(contents)
f:close()
return true
end
|
