Earlier, Australia’s captain George Bailey won the toss and chose to bat in the first ODI in Sharjah, where both teams named a debutant bowler.
Pakistan got an early success with a first ball wicket as Muhammad Irfan dismissed Aaron Finch but the Kangaroos soon overcame the loss with some steady batting by Smith and Warner.
Smith scored a brisk 101 off 118 balls, hitting six fours and two sixes while Warner made 43 runs before being dismissed by Shahid Afridi.
Pakistan’s Wahab Riaz took 2 wickets while Afridi topped the list with 3 wickets to his credit.