Dont you pull that "There is no rule against it" stuff.
Something like that shouldn't HAVE to be told, It should be common sense. You cant justify you being an idiot because the admin didn't tell you not to.
That would be like sticking a drill in your ass and suing the company for not putting a label on it to tell you not to stick it in your ass.
There are rules. Within them it does not say do not steal.
Minecraft servers vary. If it was common for drills be used to stick in your ass, and a company made a drill not for that, they'd put it ont he label.
Many minecraft servers include stealing being allowed. If you don't want stealign on your server, you should state it in the rules./