AC/DC comes to mind. Obviously. I can't think of anyone else but the Easybeats, who are the older siblings of Angus & Malcolm. We're the Bee Gees Australian?
there was a lot of great oz bands then that didn't translate to the world stage because their songs were about oz - cold chisel were unbelieveably amazing live as were most of those mentioned up there
Here is Fraternity:- Seasons of Change. They played at my high school once, during the lunch break. I found the lead singer quite charismatic - a great stage presence!