I forgot password to 7z archive encrypted with AES 256. I am fairly certain of most characters however. I know password length is either 8 or 12 characters and if it is 12 I know the last 4 characters. I am certain of 1st, 4th, 5th characters. I know the 2nd/6th character 1 of 2 options. 3rd character is 1 of 3 characters. 7th/8th characters can be 13 different possibilities. Is there way to generate password list with known parameters? I have very limited knowledge of coding.

1 Answer 1



You'll probably want to use Hashcat for this, and they call this a mask attack.

You define a mask with the portions you know and a charset for the unknown parts that describes what should be substituted into the unknown parts.

Here's a tutorial for attacking 7z files using Hashcat.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.