sometime server dont check everything ...in iruna online (before they fix it)
server was not checking what you buy from npc, can buy anything by changing the ID of shop item with gameCIH....
and the server was not checking if the ID of the character was linked to the account ID,
changing your character id with gameCIH and reloading by disconnect/reconnect was enough to log to any characters, even banned or GM characters.
in izanagi online, purchasing 0 quantity of a non stackable item from npc shop give you the stuff for free. (fixed) ...
so sometime you can try small things like that with a memory editor.