Re: Using John to crack a password

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On 11/21/2016 03:54 PM, Joe Zeff wrote:
On 11/21/2016 12:25 PM, Robert Moskowitz wrote:
I have a running system that I have forgotten the root password.  I
really do not want to take down the system, go through the steps to boot
up in single user mode and change the password.

I just happen to have used the same password on a test system, so I was
able to copy the /etc/passwd, edit it so that it only contains the root
user and feed it into john on a notebook I have (F22).

Well john has been working for 20 hours (one cpu pegged at 100%).  I did
not think the password was that complex!

Copy /etc/passwd from the running system onto your notebook (Be sure to save the regular copy, of course.) and then boot into single user mode to change the password.

Um, how to I get the REAL /etc/passwd file from the system when logged in as a regular user? Yeah, I did things like this back in the days before /etc/shadow, but since then...

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