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76 lines
1.8 KiB
Lua
76 lines
1.8 KiB
Lua
local os = require "os"
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local datetime = require "datetime"
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local bitcoin = require "bitcoin"
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local shortport = require "shortport"
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local stdnse = require "stdnse"
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local table = require "table"
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description = [[
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Extracts version and node information from a Bitcoin server
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]]
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---
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-- @usage
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-- nmap -p 8333 --script bitcoin-info <ip>
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--
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-- @output
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-- PORT STATE SERVICE
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-- 8333/tcp open unknown
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-- | bitcoin-info:
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-- | Timestamp: Wed Nov 9 19:47:23 2011
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-- | Network: main
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-- | Version: 0.4.0
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-- | Node Id: DD5DFCBAAD0F882D
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-- |_ Lastblock: 152589
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--
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author = "Patrik Karlsson"
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license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
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categories = {"discovery", "safe"}
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--
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-- Version 0.1
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--
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-- Created 11/09/2011 - v0.1 - created by Patrik Karlsson <patrik@cqure.net>
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--
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portrule = shortport.port_or_service(8333, "bitcoin", "tcp" )
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local function fail(err) return stdnse.format_output(false, err) end
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action = function(host, port)
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local NETWORK = {
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[3652501241] = "main",
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[3669344250] = "testnet"
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}
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local bcoin = bitcoin.Helper:new(host, port, { timeout = 10000 })
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local status = bcoin:connect()
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if ( not(status) ) then
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return fail("Failed to connect to server")
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end
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local request_time = os.time()
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local status, ver = bcoin:exchVersion()
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if ( not(status) ) then
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return fail("Failed to extract version information")
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end
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bcoin:close()
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datetime.record_skew(host, ver.timestamp, request_time)
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local result = stdnse.output_table()
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result["Timestamp"] = stdnse.format_timestamp(ver.timestamp)
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result["Network"] = NETWORK[ver.magic]
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result["Version"] = ver.ver
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result["Node Id"] = ver.nodeid
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result["Lastblock"] = ver.lastblock
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if ver.user_agent ~= "" then
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result["User Agent"] = ver.user_agent
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end
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return result
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end
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