Weighted voting in the UN

Is any voting in the UN ever weighted against the population, contribution or consequences?

I understand that some countries have a better footing due to historical reasons. However, just to name some countries not in the security council: I find puzzling that Lichtenstein (pop. 38,137) or Tuvalu (pop. 11,792) get one vote in the same way that India (pop. 1.38 billion) or Indonesia (272 mill.) get one too.