When you play on battle.net, your character belongs to Blizzard. I'm fairly certain you'd have to ask them before making copies of their property. Having said that, an old, old, old maphack had that feature built in, but you had to pay for this maphack version and once Blizzard caught wind someone was charging real money for a third party program that interacts with their software, they sued the absolute pants off of the creator and that maphack version vanished forever, as well as the ability to save realm characters. The irony here is most major corporations lost similar battles over 3rd party software, such as with Windows and IE, but a single hacker doesn't have the same legal representation as a huge class action lawsuit does.
"The true value of a human being is determined primarily by the measure and the sense in which he has attained liberation from the self." -Albert Einsetin