thank you for asking this question in our Forum.
There two different situation, where the state can legally bind you to a town/city:
1. Residenzpflicht= this is the case if your asylum case hasnt been decided yet upon. In this case even if you get a job- you will ot be able to apply for a transfer.
2. Wohnsitzauflage= This is the case if your Case has been decided upon. In this Case, depending on your status granted there are different ways to move to another city, but mainly when you do not financial support by the state.
So taking into account the Informations you have given:
You might be able to apply once your case has been decided upon to move to town where you have family(your aunt), I would suggest in this case to get some legal help in order to get it through.
I hope I could help here.