Update runasppl.py

`execute()` method of `smb` class returns False if an error occurred.
https://github.com/Pennyw0rth/NetExec/blob/main/nxc/protocols/smb.py#L766

If so, the current code fails as `False` is not iterable.

This fix will check if `p` is not `False` before checking the error message in `p` 

Signed-off-by: Pixis <hackndo@gmail.com>

Author: Hackndo

nxc/modules/runasppl.py

@@ -17,7 +17,7 @@ def on_admin_login(self, context, connection):
         command = r"reg query HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\ /v RunAsPPL"
         context.log.debug(f"Executing command: {command}")
         p = connection.execute(command, True)
-        if "The system was unable to find the specified registry key or value" in p:
+        if not p or "The system was unable to find the specified registry key or value" in p:
             context.log.debug("Unable to find RunAsPPL Registry Key")
         else:
             context.log.highlight(p)