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local nmap = require "nmap"
local stdnse = require "stdnse"
local table = require "table"
description = [[
Creates a reverse index at the end of scan output showing which hosts run a
particular service. This is in addition to Nmap's normal output listing the
services on each host.
]]
---
-- @usage
-- nmap --script reverse-index <hosts/networks>
--
-- @output
-- Post-scan script results:
-- | reverse-index:
-- | 22/tcp: 192.168.0.60
-- | 23/tcp: 192.168.0.100
-- | 80/tcp: 192.168.0.70
-- | 445/tcp: 192.168.0.1
-- | 53/udp: 192.168.0.105, 192.168.0.70, 192.168.0.60, 192.168.0.1
-- |_ 5353/udp: 192.168.0.105, 192.168.0.70, 192.168.0.60, 192.168.0.1
--
-- @args reverse-index.mode the output display mode, can be either horizontal
-- or vertical (default: horizontal)
--
-- Version 0.1
-- Created 11/22/2011 - v0.1 - created by Patrik Karlsson
author = "Patrik Karlsson"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = { "safe" }
-- the postrule displays the reverse-index once all hosts are scanned
postrule = function() return true end
-- the hostrule iterates over open ports for the host and pushes them into the registry
hostrule = function() return true end
hostaction = function(host)
nmap.registry[SCRIPT_NAME] = nmap.registry[SCRIPT_NAME] or {}
for _, s in ipairs({"open", "open|filtered"}) do
for _, p in ipairs({"tcp","udp"}) do
local host, port = host, nil
local db = nmap.registry[SCRIPT_NAME]
while( true ) do
port = nmap.get_ports(host, port, p, s)
if ( not(port) ) then break end
db[p] = db[p] or {}
db[p][port.number] = db[p][port.number] or {}
table.insert(db[p][port.number], { ip = host.ip, port = port, proto = p, state = s } )
end
end
end
end
--
-- Shows an index similar to the following one
-- Post-scan script results:
-- | reverse-index:
-- | tcp/22
-- | 192.168.0.60
-- | tcp/23
-- | 192.168.0.100
-- | tcp/80
-- | 192.168.0.70
-- | tcp/445
-- | 192.168.0.1
-- | udp/5353
-- | 192.168.0.105
-- | 192.168.0.1
-- | 192.168.0.60
-- |_ 192.168.0.70
local function createVerticalResults(db)
local results = {}
for proto, ports in pairs(db) do
for port, entries in pairs(ports) do
local result_entries = {}
for _, entry in ipairs(entries) do
table.insert(result_entries, entry.ip)
end
table.sort(result_entries)
result_entries.name = ("%d/%s"):format(port, proto)
table.insert(results, result_entries)
table.sort(results,
function(a,b)
local a_port, a_proto = a.name:match("^(%d+)/(%w*)")
local b_port, b_proto = b.name:match("^(%d+)/(%w*)")
if ( a_proto == b_proto ) then
return ( tonumber(a_port) ) < ( tonumber(b_port) )
else
return a_proto < b_proto
end
end
)
end
end
return results
end
--
-- Shows an index similar to the following one
-- | reverse-index:
-- | tcp/22: 192.168.0.60
-- | tcp/23: 192.168.0.100
-- | tcp/80: 192.168.0.70
-- | tcp/445: 192.168.0.1
-- | udp/53: 192.168.0.105, 192.168.0.70, 192.168.0.60, 192.168.0.1
-- |_ udp/5353: 192.168.0.105, 192.168.0.70, 192.168.0.60, 192.168.0.1
local function createHorizontalResults(db)
local results = {}
for proto, ports in pairs(db) do
for port, entries in pairs(ports) do
local result_entries = {}
for _, entry in ipairs(entries) do
table.insert(result_entries, entry.ip)
end
local ips = stdnse.strjoin(", ", result_entries)
local str = ("%d/%s: %s"):format(port, proto, ips)
table.insert(results, str)
table.sort(results,
function(a,b)
local a_port, a_proto = a:match("^(%d+)/(%w*):")
local b_port, b_proto = b:match("^(%d+)/(%w*):")
if ( a_proto == b_proto ) then
return ( tonumber(a_port) ) < ( tonumber(b_port) )
else
return a_proto < b_proto
end
end
)
end
end
return results
end
postaction = function()
local db = nmap.registry[SCRIPT_NAME]
if ( db == nil ) then
return false
end
local results
local mode = stdnse.get_script_args("reverse-index.mode") or "horizontal"
if ( mode == 'horizontal' ) then
results = createHorizontalResults(db)
else
results = createVerticalResults(db)
end
return stdnse.format_output(true, results)
end
local Actions = {
hostrule = hostaction,
postrule = postaction
}
-- execute the action function corresponding to the current rule
action = function(...) return Actions[SCRIPT_TYPE](...) end
|
