Comments on: HOWTO: Recover A Linux Password

By: B0b0_d4_c0rt3

B0b0_d4_c0rt3 — Thu, 23 Jun 2011 03:18:26 +0000

I believe that encryption can be used by the shadow not is MD5 but yes : SHA512, explaining the reason for the existence of the $ 6 $.

[]‘s
B0b0_d4_c0rt3

By: andre

andre — Tue, 15 Jun 2010 12:47:18 +0000

me too I’ve got the same problem, the shadow file also starts with a $6$ instead of $1$, looks like that they changed the process off store passwords, they used MD5 before, but now I dont know what is used…

By: jhonny

jhonny — Sat, 10 Apr 2010 15:42:29 +0000

I have the same problem as Brian.

The shadow file starts with $6$ and not $1$

$6$dRM3s/LEr$LG……..

What shall we do?

By: Brian

Brian — Sat, 24 Jan 2009 01:53:47 +0000

This doesn’t work on Ubuntu 9.04:

$ sudo john /etc/shadow
Created directory: /root/.john
No password hashes loaded

I looked in /etc/shadow and the 1 account that has a password associated with it, starts with $6$ and not $1$.

By: Ebbot

Ebbot — Thu, 15 Jan 2009 12:20:21 +0000

Well, 3 seconds later:

sudo john -show /etc/shadow
Created directory: /root/.john
0 password hashes cracked, 1 left

By: MTecknology

MTecknology — Tue, 13 Jan 2009 08:12:49 +0000

Morgan Goose:

One first run this is displayed – Created directory: /root/.john
Delete directory and remove cached passwords.

By: Morgan Goose

Morgan Goose — Mon, 05 Jan 2009 17:13:26 +0000

It might be a good idea to show how to remove the cached passwords. Otherwise all the passwords on your machine are one sudo command away from being revealed?

By: forkbomber

forkbomber — Sat, 03 Jan 2009 14:45:56 +0000

Well… last time i tried to crack my password, it took over 7 hours, then i stopped the program because i didn’t want a buzzing computer in my room when i tried to sleep

it’s only a sequence of normal char’s though, not even numbres… but yah, it’s quite long and random…

By: Chiron613

Chiron613 — Tue, 25 Nov 2008 16:16:42 +0000

So far, john hasn’t cracked my passwords. I use fairly long ones with alpha and non-alpha characters, so I’m thinking it might take a long time. Still, the best way to know is to actually put it to the test…

By: Linux Code and More » Blog Archive » Linux: Recover A Password

Linux Code and More » Blog Archive » Linux: Recover A Password — Sun, 11 Nov 2007 00:30:49 +0000

[...] Unknown wrote an interesting post today onHere’s a quick excerpt [ recover3.png] I thought I might share with you a way to recover password on a *nix system. The commands and screen shots are from Ubuntu, but this basic process should work for any distro. When you create an account on a Linux system, the password isnâ€™t stored. Instead, the hash [...]