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Date: Thu, 4 Jun 2015 22:03:24 +0300
From: Shinnok <>
Subject: Re: [Johnny] Task 1.5.1 Manual plaintext guessing

> On Jun 2, 2015, at 4:59 AM, Solar Designer <> wrote:
> On Mon, Jun 01, 2015 at 05:03:34PM -0400, Mathieu Laprise wrote:
>> How is --stdin supposed to work ? I'm not sure to understand. I know for
>> sure that the password for one of my hash is "baseball". I did ./john
>> --stdin pw1.txt . I got a command line, I enter "baseball" and press ENTER.
>> A new command line appears to enter another word. How do I trigger the
>> attack with --stdin?
> Your guesses entered so far will actually be checked against the hashes
> when either all of the buffers fill up (stdin stream buffer and JtR's
> own plaintext keys buffer, the latter one of which is hash type and
> build specific) or there's EOF on the input stream.  So in your specific
> example, you'd press Ctrl-D.  In Johnny, you'd flush the Johnny-side
> buffer (if any exists) and then close the file descriptor.  Obviously,
> this will also cause john to terminate once it's checked the plaintexts
> entered up to that point.

Mathieu, is this working for you? I noticed in your latest revision you're closing the readChannel after writing the passphrase, which I'd assume is correct.


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