Warrior: Yes.
Page 228, UAC Guide (for the University of Sydney):
Transferring to a HECS place
Depending on the policy of the faculty controlling the degree into which you wish to transfer, subject to any special selection criteria and provided you have studied at a recognised tertiary institution for one or more full-time years (or part-time equivalent) you will be selected on the basis of your total academic record, both secondary and tertiary, with appropriate credit for subjects already completed. You will have to meet the standards of those transferring from HECS places in other degrees. Application is through UAC.
Page 184, UAC Guide (for the University of NSW):
Transferring to a HECS place
If you enrol as a fee-paying student you will be eligible to apply to transfer to a HECS place in the same course after completing one year of full-time study. Transfer to a HECS place is not guaranteed and selection will take into account both your secondary and tertiary performance. You must apply through UAC.