A woman was attacked outside her North Perth home overnight after two men threatened her and tried to steal her car.
The attack happened about 10.40pm when the woman arrived home.
One of two men demanded keys to her Mercedes convertible and her handbag.
When the woman refused the man hit her twice in the face and head and tried to grab her arm.
The woman fled and sought help from a housemate.
The attacker is described as dark-skinned, aged 20 to 25, of medium build and about 175cm tall. He had short dark hair and dark eyes and was wearing a black tracksuit jacket, black t-shirt, dark track pants and dirty sneakers.
The other man was dark skinned, medium build and was wearing a light-coloured beanie and dark clothing.Anyone who can assist in this investigation is asked to call Crime Stoppers on 1800 333 000.