Fix local/pxeexploit datastore

Author: wvu

modules/exploits/windows/local/pxeexploit.rb

@@ -47,7 +47,11 @@ def initialize
         ],
       'Privileged'     => true,
       'Stance' => Msf::Exploit::Stance::Passive,
-      'DefaultTarget'  => 0
+      'DefaultTarget'  => 0,
+      'DefaultOptions' => {
+        'FILENAME' => 'update1',
+        'SERVEONCE' => true # once they reboot; don't infect again - you'll kill them!
+      }
     )
 
     register_options(
@@ -57,7 +61,8 @@ def initialize
 
     register_advanced_options(
       [
-        OptString.new('TFTPROOT',   [ false,  'The TFTP root directory to serve files from' ]),
+        OptString.new('TFTPROOT',   [ false,  'The TFTP root directory to serve files from',
+          File.join(Msf::Config.data_directory, 'exploits', 'pxexploit')]),
         OptString.new('SRVHOST',   [ false,  'The IP of the DHCP server' ]),
         OptString.new('NETMASK',   [ false,  'The netmask of the local subnet', '255.255.255.0' ]),
         OptBool.new('RESETPXE',   [ true,  'Resets the server to re-exploit already targeted hosts', false ]),
@@ -67,12 +72,6 @@ def initialize
   end
 
   def exploit
-    if not datastore['TFTPROOT']
-      datastore['TFTPROOT'] = File.join(Msf::Config.data_directory, 'exploits', 'pxexploit')
-    end
-    datastore['FILENAME'] = "update1"
-    datastore['SERVEONCE'] = true # once they reboot; don't infect again - you'll kill them!
-
     # Prepare payload
     print_status("Creating initrd")
     initrd = IO.read(File.join(Msf::Config.data_directory, 'exploits', 'pxexploit','updatecustom'))