local brute = require "brute" local coroutine = require "coroutine" local creds = require "creds" local io = require "io" local nmap = require "nmap" local shortport = require "shortport" local stdnse = require "stdnse" local tns = require "tns" local openssl = stdnse.silent_require "openssl" description = [[ Performs brute force password auditing against Oracle servers. Running it in default mode it performs an audit against a list of common Oracle usernames and passwords. The mode can be changed by supplying the argument oracle-brute.nodefault at which point the script will use the username- and password- lists supplied with Nmap. Custom username- and password- lists may be supplied using the userdb and passdb arguments. The default credential list can be changed too by using the brute.credfile argument. In case the userdb or passdb arguments are supplied, the script assumes that it should run in the nodefault mode. In modern versions of Oracle password guessing speeds decrease after a few guesses and remain slow, due to connection throttling. WARNING: The script makes no attempt to discover the amount of guesses that can be made before locking an account. Running this script may therefor result in a large number of accounts being locked out on the database server. ]] --- -- @usage -- nmap --script oracle-brute -p 1521 --script-args oracle-brute.sid=ORCL -- -- @output -- PORT STATE SERVICE REASON -- 1521/tcp open oracle syn-ack -- | oracle-brute: -- | Accounts -- | system:powell => Account locked -- | haxxor:haxxor => Valid credentials -- | Statistics -- |_ Perfomed 157 guesses in 8 seconds, average tps: 19 -- -- @args oracle-brute.sid - the instance against which to perform password -- guessing -- @args oracle-brute.nodefault - do not attempt to guess any Oracle default -- accounts -- -- Version 0.3 -- Created 07/12/2010 - v0.1 - created by Patrik Karlsson -- Revised 07/23/2010 - v0.2 - added script usage and output and -- - oracle-brute.sid argument -- Revised 07/25/2011 - v0.3 - added support for guessing default accounts -- changed code to use ConnectionPool -- Revised 03/13/2012 - v0.4 - revised by László Tóth -- added support for SYSDBA accounts -- Revised 08/07/2012 - v0.5 - revised to suit the changes in brute -- library [Aleksandar Nikolic] -- -- Summary -- ------- -- x The Driver class contains the driver implementation used by the brute -- library author = "Patrik Karlsson" license = "Same as Nmap--See http://nmap.org/book/man-legal.html" categories = {"intrusive", "brute"} portrule = shortport.port_or_service(1521, "oracle-tns", "tcp", "open") local ConnectionPool = {} local sysdba = {} Driver = { new = function(self, host, port, sid ) local o = { host = host, port = port, sid = sid } setmetatable(o, self) self.__index = self return o end, --- Connects performs protocol negotiation -- -- @return true on success, false on failure connect = function( self ) local MAX_RETRIES = 10 local tries = MAX_RETRIES self.helper = ConnectionPool[coroutine.running()] if ( self.helper ) then return true end self.helper = tns.Helper:new( self.host, self.port, self.sid ) -- This loop is intended for handling failed connections -- A connection may fail for a number of different reasons. -- For the moment, we're just handling the error code 12520 -- -- Error 12520 has been observed on Oracle XE and seems to -- occur when a maximum connection count is reached. local status, data repeat if ( tries < MAX_RETRIES ) then stdnse.print_debug(2, "%s: Attempting to re-connect (attempt %d of %d)", SCRIPT_NAME, MAX_RETRIES - tries, MAX_RETRIES) end status, data = self.helper:Connect() if ( not(status) ) then stdnse.print_debug(2, "%s: ERROR: An Oracle %s error occured", SCRIPT_NAME, data) self.helper:Close() else break end tries = tries - 1 stdnse.sleep(1) until( tries == 0 or data ~= "12520" ) if ( status ) then ConnectionPool[coroutine.running()] = self.helper end return status, data end, --- Attempts to login to the Oracle server -- -- @param username string containing the login username -- @param password string containing the login password -- @return status, true on success, false on failure -- @return brute.Error object on failure -- brute.Account object on success login = function( self, username, password ) local status, data = self.helper:Login( username, password ) if ( sysdba[username] ) then return false, brute.Error:new("Account already discovered") end if ( status ) then self.helper:Close() ConnectionPool[coroutine.running()] = nil return true, brute.Account:new(username, password, creds.State.VALID) -- Check for account locked message elseif ( data:match("ORA[-]28000") ) then return true, brute.Account:new(username, password, creds.State.LOCKED) -- Check for account is SYSDBA message elseif ( data:match("ORA[-]28009") ) then sysdba[username] = true return true, brute.Account:new(username .. " as sysdba", password, creds.State.VALID) -- check for any other message elseif ( data:match("ORA[-]%d+")) then stdnse.print_debug(3, "username: %s, password: %s, error: %s", username, password, data ) return false, brute.Error:new(data) -- any other errors are likely communication related, attempt to re-try else self.helper:Close() ConnectionPool[coroutine.running()] = nil local err = brute.Error:new(data) err:setRetry(true) return false, err end return false, brute.Error:new( data ) end, --- Disconnects and terminates the Oracle TNS communication disconnect = function( self ) return true end, } action = function(host, port) local DEFAULT_ACCOUNTS = "nselib/data/oracle-default-accounts.lst" local sid = stdnse.get_script_args('oracle-brute.sid') or stdnse.get_script_args('tns.sid') local engine = brute.Engine:new(Driver, host, port, sid) local mode = "default" if ( not(sid) ) then return "\n ERROR: Oracle instance not set (see oracle-brute.sid or tns.sid)" end local helper = tns.Helper:new( host, port, sid ) local status, result = helper:Connect() if ( not(status) ) then return "\n ERROR: Failed to connect to oracle server" end helper:Close() local f if ( stdnse.get_script_args('userdb') or stdnse.get_script_args('passdb') or stdnse.get_script_args('oracle-brute.nodefault') or stdnse.get_script_args('brute.credfile') ) then mode = nil end if ( mode == "default" ) then f = nmap.fetchfile(DEFAULT_ACCOUNTS) if ( not(f) ) then return ("\n ERROR: Failed to find %s"):format(DEFAULT_ACCOUNTS) end f = io.open(f) if ( not(f) ) then return ("\n ERROR: Failed to open %s"):format(DEFAULT_ACCOUNTS) end engine.iterator = brute.Iterators.credential_iterator(f) end engine.options.script_name = SCRIPT_NAME status, result = engine:start() return result end