If your a good hacker you can hack impossable stuff,it may be hard to you guys...
In order to hack a Blockland server, you would need to hack the computer it's hosted on.
If you manage to do that, then there are more evil things you could do than to mess with their internet legos.
But if you're implying that you are capable of this, please feel free to try.
I can host a server for you and leave it up all night.