Is it possible to get a night train from b]Berlin to Krakow?

Hi Reddit, I am planning a last minute interail for myself and 5 friends this August and we want to get a night train from Berlin to Krakow and then Krakow to Prague a number of days later. I am really finding it tough to try find this on my own. Is there anyone that could advise me if these night trains even run and if they do where can I pre-book them? Thanks!