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Add tso-enum and tso-brute. See #554
This commit is contained in:
dmiller
@@ -1,5 +1,8 @@
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# Nmap Changelog ($Id$); -*-text-*-
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o [NSE] Script tso-enum enumerates usernames for TN3270 Telnet services, and
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tso-brute brute-forces passwords for the same services. [Soldier of Fortran]
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o [NSE] Script vtam-enum brute-forces VTAM application IDs for TN3270 services.
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[Soldier of Fortran]
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@@ -520,6 +520,8 @@ Entry { filename = "tls-nextprotoneg.nse", categories = { "default", "discovery"
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Entry { filename = "tn3270-screen.nse", categories = { "discovery", "safe", } }
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Entry { filename = "tor-consensus-checker.nse", categories = { "external", "safe", } }
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Entry { filename = "traceroute-geolocation.nse", categories = { "discovery", "external", "safe", } }
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Entry { filename = "tso-brute.nse", categories = { "intrusive", } }
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Entry { filename = "tso-enum.nse", categories = { "brute", "intrusive", } }
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Entry { filename = "unittest.nse", categories = { "safe", } }
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Entry { filename = "unusual-port.nse", categories = { "safe", } }
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Entry { filename = "upnp-info.nse", categories = { "default", "discovery", "safe", } }
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271
scripts/tso-brute.nse
Normal file
271
scripts/tso-brute.nse
Normal file
@@ -0,0 +1,271 @@
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local stdnse = require "stdnse"
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local shortport = require "shortport"
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local tn3270 = require "tn3270"
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local brute = require "brute"
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local creds = require "creds"
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local unpwdb = require "unpwdb"
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local nmap = require "nmap"
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local string = require "string"
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description = [[
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TSO account brute forcer.
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This script relies on the NSE TN3270 library which emulates a
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TN3270 screen for NMAP.
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TSO user IDs have the following rules:
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- it cannot begin with a number
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- only contains alpha-numeric characters and @, #, $.
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- it cannot be longer than 7 chars
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]]
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---
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-- @usage
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-- nmap -p 2401 --script tso-brute <host>
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--
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-- @output
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-- 23/tcp open tn3270 syn-ack IBM Telnet TN3270
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-- | tso-brute:
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-- | Node Name:
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-- | IBMUSER:<skipped> - User logged on. Skipped.
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-- | ZERO:<skipped> - User logged on. Skipped.
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-- | COOL:secret - Valid credentials
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-- |_ Statistics: Performed 6 guesses in 6 seconds, average tps: 1
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-- Final times for host: srtt: 96305 rttvar: 72303 to: 385517
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--
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-- @args tso-brute.commands Commands in a semi-colon seperated list needed
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-- to access TSO. Defaults to <code>TSO</code>.
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--
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-- @args tso-brute.always_logon TSO logon can kick a user off if it guesses
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-- the correct password. always_logon, when set to <code>true</code>, will logon, even if
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-- the user is logged in (kicking that user off). The default, <code>false</code> will
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-- skip that account.
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--
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-- @changelog
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-- 2015-10-29 - v0.1 - created by Soldier of Fortran
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--
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-- @author Philip Young
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-- @copyright Same as Nmap--See http://nmap.org/book/man-legal.html
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--
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author = "Soldier of Fortran"
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license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
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categories = {"intrusive"}
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portrule = shortport.port_or_service({23,992,623}, {"tn3270"})
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--- Registers User IDs that no longer need to be tested
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--
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-- @param username to stop checking
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local function register_invalid( username )
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if nmap.registry.tsoinvalid == nil then
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nmap.registry.tsoinvalid = {}
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end
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stdnse.debug(2,"Registering %s", username)
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nmap.registry.tsoinvalid[username] = true
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end
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Driver = {
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new = function(self, host, port, options)
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local o = {}
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setmetatable(o, self)
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self.__index = self
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o.host = host
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o.port = port
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o.options = options
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o.tn3270 = tn3270.Telnet:new()
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return o
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end,
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connect = function( self )
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local status, err = self.tn3270:initiate(self.host,self.port)
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self.tn3270:get_screen_debug(2)
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if not status then
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stdnse.debug("Could not initiate TN3270: %s", err )
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return false
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end
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return true
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end,
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disconnect = function( self )
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self.tn3270:disconnect()
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self.tn3270 = nil
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return true
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end,
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login = function (self, user, pass)
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local commands = self.options['key1']
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local always_logon = self.options['key2']
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stdnse.debug(2,"Getting to TSO")
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local run = stdnse.strsplit(";%s*", commands)
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for i = 1, #run do
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stdnse.debug(2,"%s: Issuing Command (#%s of %s): %s",user , i, #run ,run[i])
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self.tn3270:send_cursor(run[i])
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self.tn3270:get_all_data()
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end
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if ( self.tn3270:find('NO USER APPLID AVAILABLE') ) then
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local err = brute.Error:new( "No APPLID Available" )
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-- This error occurs on too many concurrent application requests
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-- it should be temporary.
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err:setRetry( true )
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return false, err
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end
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stdnse.verbose(2,"Trying User ID/Password: %s/%s", user, pass)
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stdnse.debug(2,"Sending User ID: %s", user)
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self.tn3270:send_cursor(user)
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self.tn3270:get_all_data()
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if self.tn3270:find("***") then
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self.tn3270:send_enter() -- some systems require an enter after sending the user
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self.tn3270:get_all_data()
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end
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stdnse.debug(2,"Screen Recieved for User ID: %s", user)
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self.tn3270:get_screen_debug(2)
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if not self.tn3270:find('Enter LOGON parameters below') then
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stdnse.debug(2,"Screen Recieved for User ID: %s", user)
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self.tn3270:get_screen_debug(2)
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-- Sometimes mainframes get overloaded
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local err = brute.Error:new( "Not at TSO" )
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err:setRetry( true )
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return false, err
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end
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if self.tn3270:find('not authorized to use TSO') then -- invalid user ID
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stdnse.debug(2,"Got Message: IKJ56420I Userid %s not authorized to use TSO.", user)
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-- Store the invalid ID in the registry so we don't keep trying it with subsequent passwords
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-- when using default brute library.
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register_invalid(user)
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return false, brute.Error:new( "User ID not authorized to use TSO" )
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else
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-- It's a valid account so lets try a password
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stdnse.debug(2,"%s is a valid TSO User ID. Trying Password: %s", string.upper(user), pass)
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if always_logon then
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local writeable = self.tn3270:writeable()
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-- This turns on
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self.tn3270:send_locations({{writeable[1][1],pass},{writeable[11][1],"S"}})
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else
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self.tn3270:send_cursor(pass)
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end
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self.tn3270:get_all_data()
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while self.tn3270:isClear() do
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-- the screen is blank for a few while it loads TSO
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self.tn3270:get_all_data()
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end
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stdnse.debug(2,"Screen Recieved for User/Pass: %s/%s", user, pass)
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self.tn3270:get_screen_debug(2)
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if not always_logon and self.tn3270:find("already logged on") then
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register_invalid(user)
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return true, creds.Account:new(user, "<skipped>", "User logged on. Skipped.")
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elseif not (self.tn3270:find("IKJ56421I") or
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self.tn3270:find("TSS7101E") or
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self.tn3270:find("TSS714[0-3]E") or
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self.tn3270:find("TSS7120E")) then
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-- RACF:
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-- IKJ56421I PASSWORD NOT AUTHORIZED FOR USERID
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-- Top Secret:
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-- TSS7101E Password is Incorrect
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-- TSS7140E Accessor ID Has Expired: No Longer Valid
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-- TSS7141E Use of Accessor ID Suspended
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-- TSS7142E Accessor ID Not Yet Available for Use - Still Inactive
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-- TSS7143E Accessor ID Has Been Inactive Too Long
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-- TSS7120E PASSWORD VIOLATION THRESHOLD EXCEEDED
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stdnse.verbose(2,"Valid User/Pass" .. user .. "/" .. pass.. "MSG:" .. self.tn3270:get_screen():sub(1,80))
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return true, creds.Account:new(user, pass, creds.State.VALID)
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else
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stdnse.verbose(self.tn3270:get_screen():sub(1,80))
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return false, brute.Error:new( "Incorrect password" )
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end
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-- IKJ56425I LOGON rejected User already logged on to system
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end
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end
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}
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--- Tests the target to see if we can even get to TSO
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--
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-- @param host host NSE object
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-- @param port port NSE object
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-- @param commands script-args of commands to use to get to TSO
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-- @return status true on success, false on failure
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local function tso_test( host, port, commands )
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local tso = false -- initially we're not at TSO logon panel
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stdnse.debug("Checking for TSO")
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local tn = tn3270.Telnet:new()
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stdnse.debug2("Connecting TN3270 to %s:%s", host.targetname or host.ip, port.number)
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local status, err = tn:initiate(host,port)
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stdnse.debug2("Displaying initial TN3270 Screen:")
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tn:get_screen_debug(2) -- prints TN3270 screen to debug
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if not status then
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stdnse.debug("Could not initiate TN3270: %s", err )
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return tso
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end
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stdnse.debug("Getting to TSO")
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local run = stdnse.strsplit(";%s*", commands)
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for i = 1, #run do
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stdnse.debug(1,"Issuing Command (#%s of %s): %s", i, #run ,run[i])
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tn:send_cursor(run[i])
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tn:get_all_data()
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end
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tn:get_screen_debug(2)
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if tn:find("ENTER USERID") or
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tn:find("TSO/E LOGON") then
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tso = true
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end
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tn:disconnect()
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return tso
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end
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-- Filter iterator for unpwdb usernames
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-- TSO is limited to 7 alpha numeric and @, #, $ and can't start with a number
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-- If this user ID has been confirmed to not be a valid TSO account
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-- it will stop being passed to the brute engine
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-- pattern:
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-- ^%D = The first char must NOT be a digit
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-- [%w@#%$] = All letters including the special chars @, #, and $.
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local valid_name = function(x)
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if nmap.registry.tsoinvalid and nmap.registry.tsoinvalid[x] then
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return false
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else
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return (string.len(x) <= 7 and string.match(x,"^%D+[%w@#%$]"))
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end
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end
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-- Checks string to see if it follows valid password limitations
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local valid_pass = function(x)
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local patt = "[%w@#%$]"
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return (string.len(x) <= 8 and string.match(x,patt))
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end
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action = function( host, port )
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local status, result
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local commands = stdnse.get_script_args(SCRIPT_NAME .. '.commands') or "tso"
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-- if a user is logged on this script will not try to logon as that user
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-- because a user is only allowed to logon from one location. If you turn always_logon on
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-- it will logon if it finds a valid username/password, kicking that user off
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local always_logon = stdnse.get_script_args(SCRIPT_NAME .. '.always_logon') or false
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if tso_test(host, port, commands) then
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stdnse.debug("Starting TSO Brute Force")
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local options = { key1 = commands, key2 = always_logon }
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local engine = brute.Engine:new(Driver, host, port, options)
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-- TSO has username restrictions. This sets the iterator to use only valid TSO userids
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engine:setUsernameIterator(unpwdb.filter_iterator(brute.usernames_iterator(),valid_name))
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engine:setPasswordIterator(unpwdb.filter_iterator(brute.passwords_iterator(), valid_pass))
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engine.options.script_name = SCRIPT_NAME
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engine.options:setOption("useraspass", false )
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engine.options:setTitle("TSO Accounts")
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status, result = engine:start()
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else
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return "Could not get to TSO. Try --script-args=tso-user-enum.commands='logon applid(tso)'. Aborting."
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end
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return result
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end
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225
scripts/tso-enum.nse
Normal file
225
scripts/tso-enum.nse
Normal file
@@ -0,0 +1,225 @@
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local stdnse = require "stdnse"
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local shortport = require "shortport"
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local tn3270 = require "tn3270"
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local brute = require "brute"
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local creds = require "creds"
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local unpwdb = require "unpwdb"
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local nmap = require "nmap"
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local string = require "string"
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description = [[
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TSO User ID enumerator for IBM mainframes (z/OS). The TSO logon panel
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tells you when a user ID is valid or invalid with the message:
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<code>IKJ56420I Userid <user ID> not authorized to use TSO</code>.
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The TSO logon process can work in two ways:
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1) You get prompted with <code>IKJ56700A ENTER USERID -</code>
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to which you reply with the user you want to use.
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If the user ID is valid it will give you a normal
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TSO logon screen. Otherwise it will give you the
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screen logon error above.
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2) You're given the TSO logon panel and enter your user ID
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at the <code>Userid ===></code> prompt. If you give
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it an invalid user ID you receive the error message above.
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This script relies on the NSE TN3270 library which emulates a
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TN3270 screen for NMAP.
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TSO user IDs have the following rules:
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- it cannot begin with a number
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- only contains alpha-numeric characters and @, #, $.
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- it cannot be longer than 7 chars
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]]
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---
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-- @args tso-enum.commands Commands in a semi-colon seperated list needed
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-- to access TSO. Defaults to <code>tso</code>.
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--
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-- @usage
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-- nmap --script=tso-enum -p 23 <targets>
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--
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-- @usage
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-- nmap -sV -p 9923 10.32.70.10 --script tso-enum --script-args userdb=tso_users.txt,tso-enum.commands="logon applid(tso)"
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--
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-- @output
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-- PORT STATE SERVICE VERSION
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-- 23/tcp open tn3270 IBM Telnet TN3270
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-- | tso-enum:
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-- | TSO User ID:
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-- | TSO User:RAZOR - Valid User ID
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-- | TSO User:BLADE - Valid User ID
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-- | TSO User:PLAGUE - Valid User ID
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-- |_ Statistics: Performed 6 guesses in 3 seconds, average tps: 2
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--
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-- @changelog
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-- 2015-07-04 - v0.1 - created by Soldier of Fortran
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-- 2015-10-30 - v0.2 - streamlined the code, relying on brute and unpwdb and
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-- renamed to tso-enum.
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author = "Philip Young aka Soldier of Fortran"
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license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
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categories = {"intrusive", "brute"}
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portrule = shortport.port_or_service({23,992,623}, {"tn3270"})
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Driver = {
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new = function(self, host, port, options)
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local o = {}
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setmetatable(o, self)
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self.__index = self
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o.host = host
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o.port = port
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o.options = options
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o.tn3270 = tn3270.Telnet:new()
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return o
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end,
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connect = function( self )
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local status, err = self.tn3270:initiate(self.host,self.port)
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self.tn3270:get_screen_debug(2)
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if not status then
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stdnse.debug("Could not initiate TN3270: %s", err )
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return false
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end
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return true
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end,
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disconnect = function( self )
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self.tn3270:send_pf(3)
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self.tn3270:disconnect()
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self.tn3270 = nil
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return true
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end,
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login = function (self, user, pass)
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-- pass is actually the user id we want to try
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local commands = self.options['key1']
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local cmd_DATA = false
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stdnse.debug(2,"Getting to TSO")
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local run = stdnse.strsplit(";%s*", commands)
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for i = 1, #run do
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stdnse.debug(1,"Issuing Command (#%s of %s): %s", i, #run ,run[i])
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if string.find(string.upper(run[i]),"logon applid") ~= nil then
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stdnse.verbose(2,"Trying User ID: %s", pass)
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self.tn3270:send_cursor(run[i] .. " DATA(" .. pass .. ")")
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cmd_DATA = true
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else
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self.tn3270:send_cursor(run[i])
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end
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self.tn3270:get_all_data()
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end
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self.tn3270:get_screen_debug(2)
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||||
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if not self.tn3270:find("ENTER USERID") and not self.tn3270:find("TSO/E LOGON") then
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||||
local err = brute.Error:new( "TSO Unavailable" )
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||||
-- This error occurs on too many concurrent application requests it
|
||||
-- should be temporary. If not, the script errors and less threads should be used.
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||||
err:setRetry( true )
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||||
return false, err
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||||
end
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||||
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||||
if not cmd_DATA then
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||||
stdnse.verbose(2,"Trying User ID: %s", pass)
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||||
self.tn3270:send_cursor(pass)
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||||
self.tn3270:get_all_data()
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||||
-- some systems require an enter after sending a valid user ID
|
||||
if self.tn3270:find("***") then
|
||||
self.tn3270:send_enter()
|
||||
self.tn3270:get_all_data()
|
||||
end
|
||||
end
|
||||
|
||||
|
||||
stdnse.debug(2,"Screen Recieved for User ID: %s", pass)
|
||||
self.tn3270:get_screen_debug(2)
|
||||
if self.tn3270:find('not authorized to use TSO') then -- invalid user ID
|
||||
return false, brute.Error:new( "Incorrect User ID" )
|
||||
elseif ( self.tn3270:find('NO USER APPLID AVAILABLE') ) or
|
||||
( self.tn3270:isClear() ) or (not self.tn3270:find('TSO/E LOGON') ) then
|
||||
local err = brute.Error:new( "TSO Unavailable" )
|
||||
-- This error occurs on too many concurrent application requests it
|
||||
-- should be temporary. If not, the script errors and less threads should be used.
|
||||
err:setRetry( true )
|
||||
return false, err
|
||||
else
|
||||
stdnse.verbose("Valid TSO User ID: %s", string.upper(pass))
|
||||
return true, creds.Account:new("TSO User",string.upper(pass), " Valid User ID")
|
||||
end
|
||||
end
|
||||
}
|
||||
|
||||
--- Tests the target to see if we can even get to TSO
|
||||
--
|
||||
-- @param host host NSE object
|
||||
-- @param port port NSE object
|
||||
-- @param commands script-args of commands to use to get to TSO
|
||||
-- @return status true on success, false on failure
|
||||
-- @return name of security product installed
|
||||
local function tso_test( host, port, commands )
|
||||
stdnse.debug("Checking for TSO")
|
||||
local tn = tn3270.Telnet:new()
|
||||
local status, err = tn:initiate(host,port)
|
||||
local tso = false -- initially we're not at TSO logon panel
|
||||
local secprod = "RACF"
|
||||
tn:get_screen_debug(2) -- prints TN3270 screen to debug
|
||||
if not status then
|
||||
stdnse.debug("Could not initiate TN3270: %s", err )
|
||||
return tso, "Could not Initiate TN3270"
|
||||
end
|
||||
stdnse.debug("Getting to TSO")
|
||||
local run = stdnse.strsplit(";%s*", commands)
|
||||
for i = 1, #run do
|
||||
stdnse.debug(1,"Issuing Command (#%s of %s): %s", i, #run ,run[i])
|
||||
tn:send_cursor(run[i])
|
||||
tn:get_all_data()
|
||||
end
|
||||
tn:get_screen_debug(2)
|
||||
|
||||
if tn:find("ENTER USERID") or tn:find("TSO/E LOGON") then
|
||||
tso = true
|
||||
-- Patch OA44855 removed the ability to enumerator users
|
||||
-- we check for that here
|
||||
tn:send_cursor("notreal")
|
||||
tn:get_all_data()
|
||||
if tn:find("IKJ56476I ENTER PASSWORD") then
|
||||
return false, "Could not enumerate. PASSWORDPREPROMPT is set to ON."
|
||||
end
|
||||
end
|
||||
|
||||
if tn:find("***") then
|
||||
secprod = "TopSecret/ACF2"
|
||||
end
|
||||
|
||||
tn:send_pf(3)
|
||||
tn:disconnect()
|
||||
return tso, secprod, "Could not get to TSO. Try --script-args=tso-enum.commands='logon applid(tso)'. Aborting."
|
||||
end
|
||||
|
||||
-- Filter iterator for unpwdb
|
||||
-- TSO is limited to 7 alpha numeric and @, #, $ and can't start with a number
|
||||
-- pattern:
|
||||
-- ^%D = The first char must NOT be a digit
|
||||
-- [%w@#%$] = All letters including the special chars @, #, and $.
|
||||
local valid_name = function(x)
|
||||
return (string.len(x) <= 7 and string.match(x,"^%D+[%w@#%$]"))
|
||||
end
|
||||
|
||||
action = function(host, port)
|
||||
local commands = stdnse.get_script_args(SCRIPT_NAME .. '.commands') or "tso"
|
||||
local tsotst, secprod, err = tso_test(host, port, commands)
|
||||
if tsotst then
|
||||
local options = { key1 = commands }
|
||||
stdnse.debug("Starting TSO User ID Enumeration")
|
||||
local engine = brute.Engine:new(Driver, host, port, options)
|
||||
engine.options.script_name = SCRIPT_NAME
|
||||
engine:setPasswordIterator(unpwdb.filter_iterator(brute.usernames_iterator(),valid_name))
|
||||
engine.options.passonly = true
|
||||
engine.options:setTitle("TSO User ID")
|
||||
local status, result = engine:start()
|
||||
port.version.extrainfo = "Security: " .. secprod
|
||||
nmap.set_port_version(host, port)
|
||||
return result
|
||||
else
|
||||
return err
|
||||
end
|
||||
|
||||
end
|
||||
Reference in New Issue
Block a user