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local os = require "os"
local datetime = require "datetime"
local bitcoin = require "bitcoin"
local shortport = require "shortport"
local stdnse = require "stdnse"
description = [[
Extracts version and node information from a Bitcoin server
]]
---
-- @usage
-- nmap -p 8333 --script bitcoin-info <ip>
--
-- @output
-- PORT STATE SERVICE
-- 8333/tcp open bitcoin
-- | bitcoin-info:
-- | Timestamp: 2018-03-09T06:25:49
-- | Network: main
-- | Version: 0.7.0
-- | Node Id: 26855fa1ac038c12
-- | Lastblock: 512702
-- |_ User Agent: /Satoshi:0.14.2/
--
author = "Patrik Karlsson"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"discovery", "safe"}
--
-- Version 0.1
--
-- Created 11/09/2011 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>
--
portrule = shortport.port_or_service(8333, "bitcoin", "tcp" )
local function fail(err) return stdnse.format_output(false, err) end
action = function(host, port)
local NETWORK = {
[3652501241] = "main",
[3669344250] = "testnet"
}
local bcoin = bitcoin.Helper:new(host, port, { timeout = 10000 })
local status = bcoin:connect()
if ( not(status) ) then
return fail("Failed to connect to server")
end
local request_time = os.time()
local status, ver = bcoin:exchVersion()
if ( not(status) ) then
return fail("Failed to extract version information")
end
bcoin:close()
datetime.record_skew(host, ver.timestamp, request_time)
local result = stdnse.output_table()
result["Timestamp"] = datetime.format_timestamp(ver.timestamp)
result["Network"] = NETWORK[ver.magic]
result["Version"] = ver.ver
result["Node Id"] = ver.nodeid
result["Lastblock"] = ver.lastblock
if ver.user_agent ~= "" then
result["User Agent"] = ver.user_agent
end
return result
end
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