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local creds = require "creds"
local http = require "http"
local json = require "json"
local nmap = require "nmap"
local shortport = require "shortport"
local stdnse = require "stdnse"
local string = require "string"
local table = require "table"
local tableaux = require "tableaux"
description = [[
Obtains information from a Bitcoin server by calling <code>getinfo</code> on its JSON-RPC interface.
]]
---
-- @usage
-- nmap -p 8332 --script bitcoinrpc-info --script-args creds.global=<user>:<pass> <target>
-- @args creds.global http credentials used for the query (user:pass)
-- @output
-- 8332/tcp open unknown
-- | bitcoinrpc-info.nse:
-- | root:
-- | balance: 0
-- | blocks: 135041
-- | connections: 36
-- | difficulty: 1379223.4296725
-- | generate: false
-- | genproclimit: -1
-- | hashespersec: 0
-- | keypoololdest: 1309381827
-- | paytxfee: 0
-- | testnet: false
-- |_ version: 32100
--
-- @xmloutput
-- <table key="root">
-- <elem key="balance">0</elem>
-- <elem key="blocks">135041</elem>
-- <elem key="connections">36</elem>
-- <elem key="difficulty">1379223.4296725</elem>
-- <elem key="generate">false</elem>
-- <elem key="genproclimit">-1</elem>
-- <elem key="hashespersec">0</elem>
-- <elem key="keypoololdest">1309381827</elem>
-- <elem key="paytxfee">0</elem>
-- <elem key="testnet">false</elem>
-- <elem key="version">32100</elem>
-- </table>
author = "Toni Ruottu"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"default", "discovery", "safe"}
dependencies = {"http-brute"}
portrule = shortport.portnumber(8332)
-- JSON-RPC helpers
local function request(method, params, id)
json.make_array(params)
local req = {method = method, params = params, id = id}
local serial = json.generate(req)
return serial
end
local function response(serial)
local _, response = json.parse(serial)
local result = response["result"]
return result
end
local ServiceProxy = {}
function ServiceProxy:new(host, port, path, options)
local o = {}
setmetatable(o, self)
self.host = host
self.port = port
self.path = path
self.options = options
self.__index = function(_, method)
return function(...)
return self:call(method, table.pack(...))
end
end
return o
end
function ServiceProxy:remote(req)
local httpdata = http.post(self.host, self.port, self.path, self.options, nil, req)
if httpdata.status == 200 then
return httpdata.body
end
end
function ServiceProxy:call(method, args)
local FIRST = 1
local req = request(method, args, FIRST)
local ret = self:remote(req)
if not ret then
return
end
local result = response(ret)
return result
end
-- Convert an integer into a broken-down version number.
-- Prior to version 0.3.13, versions are 3-digit numbers as so:
-- 200 -> 0.2.0
-- 300 -> 0.3.0
-- 310 -> 0.3.10
-- In 0.3.13 and later, they are 5-digit numbers as so:
-- 31300 -> 0.3.13
-- 31900 -> 0.3.19
-- Version 0.3.13 release announcement: https://bitcointalk.org/?topic=1327.0
local function decode_bitcoin_version(n)
if n < 31300 then
local minor, micro = n // 100, n % 100
return string.format("0.%d.%d", minor, micro)
else
local minor, micro = n // 10000, (n // 100) % 100
return string.format("0.%d.%d", minor, micro)
end
end
local function formatpairs(info)
local result = stdnse.output_table()
local keys = tableaux.keys(info)
table.sort(keys)
for _, k in ipairs(keys) do
if info[k] ~= "" then
result[k] = info[k]
end
end
return result
end
local function getinfo(host, port, user, pass)
local auth = {username = user, password = pass}
local bitcoind = ServiceProxy:new(host, port, "/", {auth = auth})
return bitcoind.getinfo()
end
action = function(host, port)
local response = stdnse.output_table()
local c = creds.Credentials:new(creds.ALL_DATA, host, port)
local states = creds.State.VALID + creds.State.PARAM
for cred in c:getCredentials(states) do
local info = getinfo(host, port, cred.user, cred.pass)
if info then
local result = formatpairs(info)
response[cred.user] = result
port.version.name = "http"
port.version.product = "Bitcoin JSON-RPC"
if info.version then
port.version.version = decode_bitcoin_version(info.version)
end
nmap.set_port_version(host, port)
end
end
return response
end
|
