Pakistan had lost the first Twenty Twenty match from South Africa by 6 wickets on Tuesday.
Pakistan won the toss and elected to bat first. Pakistani team gave irresponsible performance and all out at score of 119 in 19.5 overs.
South Africa slipped to 26-3 as Shoaib Akhtar removed Bosman and AB de Villiers in the same over, but Duminy and Ingram rebuilt and brought up their 50 partnership in 7.3 overs.
South Africa chased the minor score in just 18.2 overs.
Pakistan and South Africa will play their second T20 at Abu Dhabi Stadium today.
The series then moves to Dubai where the last three one-day matches and the first Test will be staged. Abu Dhabi will host the second Test.