As long as u don't know, what u send to the server u will only crash ur client or maybe if u are VERY lucky buy an item once for cheap etc.
All information, every exchange and so on is done by the server itself, he only lets u know thenafter, if it was a success or not, u may have all information of any item, as long as u can't send the right packets, u will only spam him.

Maybe there are solutions like the CD hack ... but i don't even think so.
Also the only thing which was ever granted was a bug using some arrows, even the chinese botter need to collect their bottles to sell them to u.
Better try to find the key for the submitted data which is also needed for any emulator to work, if not that one will be a huge DB of junk. :P