1 files changed, 75 insertions, 0 deletions
diff --git a/scripts/bitcoin-info.nse b/scripts/bitcoin-info.nse
new file mode 100644
index 0000000..b3a5194
--- /dev/null
+++ b/scripts/bitcoin-info.nse
@@ -0,0 +1,75 @@
+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