Aaron Finch believes his Australia team are proving their critics wrong as they prepare to do battle for a place in the T20 World Cup final.

Australia headed into the World Cup in poor form in the shortest format, having recorded five successive series defeats, leaving captain Finch and head coach Justin Langer under pressure.

An eight-wicket thrashing at the hands of England in their third game of the Super 12 stage left them on the brink of an exit, but wins over Bangladesh and West Indies proved enough to seal their place in the last four.

Pakistan, the only unbeaten team remaining at the World Cup, stand between Australia and a showdown against either England or New Zealand in Sunday's final.

Finch accepts many commentators may have written Australia off before the tournament started, but he insists the team only had one goal in mind when they arrived in the United Arab Emirates.

"It's just one of those things that in the lead-up to the tournament you tend to hear things or see the odd quote or comment that people have written you off," Finch told reporters.

"It's interesting how the narrative can change really quick. About 10 days ago, our team was too old, and now, we're an experienced team.

"That's just how it all gets portrayed. From day one, I've had a lot of confidence in the way that we've gone about this with the squad that we've got. I don't think that we've exceeded our expectations whatsoever. We came here with a really clear plan to win this tournament, and we're still alive to do that."

With Australia hosting the 2022 T20 World Cup, Finch is hopeful their efforts in recent weeks have set them in good stead for the future, even if their attempts to clinch silverware this time around fall short.

"One thing I'm really proud of is how we've started to uncover a little bit more depth in T20 cricket in Australia," he said.

"Some guys who mightn't have got an opportunity in the past if everyone was available, they got a good opportunity to test themselves in international cricket.I think in the long run, over the next two or three years, this period of Australian cricket will help us uncover more talent and more depth, especially in the white-ball format.

"That's something I'm really proud of. Although the results previous to this World Cup hadn't gone our way a huge amount, there was so much learning that we got out of that."

Australia have won their past two T20Is against Pakistan, having lost their prior five encounters in the format, and have won three of their past five meetings at the T20 World Cup.

However, Pakistan have won their past six T20Is – the last time they won more in succession in the format was a nine-game streak from July 2018 to November 2018, which included five straight wins against Australia.