I have been discussing this tweet https://twitter.com/marcan42/status/1238125727855206400 and the conversation around it with some folks on an encryption module I am doing as part of a cyber security masters course and it's made me curious.
The relevant part of the conversation is this:
That is the SHA256 of the 76-character passphrase to my master backups, plus '!'.
Pwn me. I'm waiting."
Making the assumption here that the passphrase in this tweet is composed entirely of lowercase English words it seems to me that it should be easy to create a custom dictionary of 76 character passphrases from a large English wordlist.
Is there a way to get a tool like hashcat or john to do this on the fly from a wordlist in the same way you can do patterns like "?l?l?l?l?d" (4 lowercase alpha followed by a digit) in hashcat or would it require building the custom dictionary first and passing it in?