Steatoda grossa (Cupboard or Brown house spider)
black to purple brown with a pale speckled band on anterior edge of abdomen and three light speckled blobby marks behind, also on sides (from Arachne.org.au)
black to purple brown with a pale speckled band on anterior edge of abdomen and three light speckled blobby marks behind, also on sides (from Arachne.org.au)