Wallet backedup but no password...

[danysof-1]

Hello everyone,
Back in september i have created my first bitshares dex account but didn't wrote down the password . Anyway on the first login i have made a backup of my local wallet and saved it on pc. A couple of days later i have made my second account and this time i saved my password in the attempt to start using the dex.

The problem in that when Bittrex delisted BTS i have sent my BTS on the first account  :-[ ...

Question: is there a way to get back my bitshares and transfer them on my sec account with only the .bin file and no password?

Thak you!