"We've just got to keep being positive and taking the aggressive option in the field," Munro said.
"You've got to take very opportunity, especially when you're playing against Australia in Australia.
"They're tough opposition, so we have to be right on our game."
Munro says the Black Caps are confident they can turn around Sunday's sub-par performance.
"We've had a bit of a chat about where we can do better. If we can just make a few tweaks, we'll go a long way towards putting ourselves in a good position," he said. "Chasing a really big target, everything on the batting front has to go your way, and we just didn't have any significant partnerships."
Coming in at No.6, Munro played an aggressive innings, which included snapping his bat, as he threw everything at a Pat Cummins delivery early in the 42nd over.
"It was a different sort of knock than what I'm used to playing - hopefully, in the games to come, I can have a few extra batters around me at the end and have a bit of a hit."
- AAP