Generate a preview OFX from your NuBank account.
NuBank doesn't let you export your bills as OFX before they're closed.
But through the power of automation, this program logs into their site, reads all transactions and generates a valid OFX file to be used in your favourite budgeting tool.
npm install -g nubank-ofx-preview
nubank-ofx-preview --username=<your-username> --password=<your-password>
nubank-ofx-preview --help
Happy budgeting!