Quote from: Kostelooscoin on August 15, 2019, 01:37:15 PM

ex: wallet.dat ====> pass1 ====> no found
wallet2.dat ====> pass1 ====> no found ect..........

Let me guess: You found some wallet.dat's online where the owner said there's X BTC stored on them, and now you're wondering if there's some easy way to crack them?

Looking at your post history:

Quote from: Kostelooscoin on July 19, 2019, 05:16:08 PM

how can you generate trillions of keys with a simple cpu and php ?

I'm sorry to tell you, but there is no such thing as a "master cracker" that can generate either billions of passwords or private keys. (At least not efficiently.)

Since to crack an unknown wallet.dat, you'll need an "infinite" word list to be 100% certain of cracking it. Trying to crack multiple unknown wallet.dat's simultaneously will take infinityx^(?)2 time. As the password could be anything.

So i guess you could potentially make a program that tries passwords (and variations of it) on multiple wallet.dat's, but it will just be a waste of time and computing power. (If we're assuming the password is atleast a couple characters long. (Which seems likely to me.))

The closest to something that you can use if you forgot your password of a wallet.dat is that which ETFbitcoin described. Even then, you'll either need to provide your own word lists, or a general idea of the password.