Best zip password recovery software to unlock a zip file?

Let's talk about using fcrackzip on Windows 10. It's a completely free, open-source command-line tool that specializes in exactly this kind of "Zip password recovery." There's no fancy GUI, but it gets the job done if you're willing to type a few commands.

Let's say you have a file called secret.zip and you have a hunch the password is a 4-6 digit number. In your terminal (WSL or otherwise). To use the Zip password recovery software, you'd type something like this:

bash

fcrackzip -b -c '1' -l 4-6 -u secret.zip

Here's what that means:

-b: We're going for a brute-force attack.

-c '1': We're telling it to only use numbers (1 is the shorthand for 0-9).

-l 4-6: The password length is between 4 and 6 characters.

-u: This tries to use the guessed password to actually unzip a file, to make sure it's the right one.

If the password is 1234, this command will find it pretty quickly.