Glenn Maxwell said it was a "genuine oversight" on his part that he did not shake Sarfraz Ahmed's hand in Harare.
Australia ran out of momentum late in their innings and Pakistan capitalised by charging to victory in the Twenty20 Tri-Series finale.
Fakhar Zaman starred with the bat and teenager Shaheen Afridi with the ball as Pakistan eased to victory over Australia.
Solomon Mire made Zimbabwe's highest ever T20 score of 94, but the hosts crashed out of the tri-series with a defeat to Pakistan.
A hostile spell from Billy Stanlake and Aaron Finch's unbeaten half-century sealed an emphatic tri-series victory for Australia.
Fakhar Zaman (61) and Asif Ali (41 not out) enjoyed starring roles as Pakistan made light work of Zimbabwe in Harare on Sunday.
Former captain Graeme Cremer is among the key men who have made themselves unavailable for Zimbabwe selection.
Umar Akmal claimed he was offered $200,000 to leave two balls during Pakistan's ICC World Cup clash with India in 2015.
Sahibzada Farhan has been handed a Pakistan call-up, as they take T20I and ODI groups to Zimbabwe.