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 Forum index » House Training » Users ( For the regulars )
Backdoor to Puppy ? -Login screens Puppy 5.3.1
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tytower

Joined: 24 Feb 2007
Posts: 440
Location: Green Island Cairns for the winter

PostPosted: Wed 30 May 2012, 17:42    Post subject:  Backdoor to Puppy ? -Login screens Puppy 5.3.1  

I saw some mumbo jumbo flash on my screen as my machine booted up. It mentioned Nvidia so I want to have a closer look at what it says.

Once xwindows loads however I am unable to see that screen again until I shut down . Both times the screen is flashed too quickly for me.

How do I get to see that screen that shows on bootup ? I feel it is a terminal screen reserved for the xwindow process .

I found that Ctrl Alt F1 gives a login screen that offers a login if I supply a name and then it asks for a password. Neither of which I can get as it does not accept root or my root password . Seems to be wanting something else . Is this a back door to Puppy?

Ctrl Alt F2 offers a login with the same number as the original root login on tty0 but does not accept my root password.

Ctrl Alt F4 returns all to the normal desktop.

None seem to get me to the first root login screen which must still be there ? Perhaps I might try the boot log files if I can find them ?
Edit I used /Menu/ Filesystem/Pfind to find all ".log" files in "system" and double clicked on bootkernel.log

Edit : I have now determined that the rubbish I can't see is only there when my Bielkin digital USB video device is plugged in on boot

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Last edited by tytower on Fri 08 Jun 2012, 17:29; edited 3 times in total
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Semme

Joined: 07 Aug 2011
Posts: 2048
Location: World_Hub

PostPosted: Wed 30 May 2012, 20:18    Post subject:  

Ty- if you're referring to a BIOS screen.. try the *pause* button. If not important- you might like this.
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tytower

Joined: 24 Feb 2007
Posts: 440
Location: Green Island Cairns for the winter

PostPosted: Thu 31 May 2012, 04:41    Post subject:  

That Nvidea tutorial is most informative and I have bookmarked it myself to have a good stew over.

The screens I am referring to I'll try the pause but if you do a Ctrl Alt F1 yourself you will get one of these screens

Use Ctrl Alt F4 to get back to the desktop

Try Ctrl Alt F2 and do same and Ctrl Alt F3 to see different terminal screens and these I can't enter because my rootpassword is not accepted by any of them?

I am wondering just what they are?

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Karl Godt


Joined: 20 Jun 2010
Posts: 2675
Location: Kiel,Germany

PostPosted: Thu 31 May 2012, 05:37    Post subject:  

When you are in xwindows and open a rxvt-terminal , does the login command work there :

bash-3.2# login
puppypc login: root
Password:
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8-bit


Joined: 03 Apr 2007
Posts: 3012
Location: Oregon

PostPosted: Thu 31 May 2012, 05:40    Post subject:
Subject description: That mysterious password
 

tytower,
When you do an alt-ctrl-F3 and get the login prompt, username is root.
When asked for a password, leave it blank.
You will then be taken to a terminal prompt where you can just type "startx" or "xwin" to get to the desktop.
The reason for leaving the password blank is that one is not set up for Puppy.
I imagine there is a way to do so as well as changing username.
But it escapes me for now.

Hope that helps you out.
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tytower

Joined: 24 Feb 2007
Posts: 440
Location: Green Island Cairns for the winter

PostPosted: Thu 31 May 2012, 17:13    Post subject:  

8-bit - I tried that and get the prompt puppypc6935 login
I entered " root" and left the password blank as you suggested but it rejected that.
I tried my known root password but that also did not work
Only way back to desktop was Ctrl Alt F4

The 6935 bit is always the same

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Keef


Joined: 20 Dec 2007
Posts: 428
Location: Staffordshire

PostPosted: Thu 31 May 2012, 17:18    Post subject:  

Try this password:
Code:
woofwoof
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Semme

Joined: 07 Aug 2011
Posts: 2048
Location: World_Hub

PostPosted: Thu 31 May 2012, 20:27    Post subject:  

For starters, reload your passwd: passwd root

You'll enter it twice (blindly) so short'n sweet's fine.

If ctrl+alt+f1 results in a blinking cursor- hit ctrl+c

You're *root* so login as such.

Load your passwd- she'll take it.

Ctrl+alt+f2 will respond the same.

For boot messages you can:
Code:
cat /var/log/messages | grep -i nvidia > nvidia_boot-messages.txt

Find this file in your home directory..

==

And no- *woofwoof* doesn't work.
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tytower

Joined: 24 Feb 2007
Posts: 440
Location: Green Island Cairns for the winter

PostPosted: Fri 01 Jun 2012, 02:40    Post subject:  

Hmm
cat /var/log/messages | grep -i nvidia > nvidia_boot-messages.txt
gives the attached text which is not what I am seeing on the flash screen

Have to disagree
ctl-alt-F2
Log in as root
give "woofwoof" as password and it DOES work
drops me into a useable shell

Yours works too Semme but along the way I lost my ctrl-alt-F4 way back to desktop .

Its all very interesting - certainly a back door with "woofwoof" ,guess thats a way into everybodys Puppy - Here's looking at you , Kid.
bashoutput.tar.gz
Description  A bit strange ,could not upload text file had to tar.gz it and that reduced it by about 20% only so why bother?
gz

 Download 
Filename  bashoutput.tar.gz 
Filesize  419 Bytes 
Downloaded  78 Time(s) 

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ozsouth

Joined: 01 Jan 2010
Posts: 82
Location: S.E Australia

PostPosted: Fri 01 Jun 2012, 03:08    Post subject: Console login on each boot  

If you rename /etc/inittab to inittab.old and save the attached code as /etc/inittab , you will be asked for the username & password on each bootup.


::sysinit:/etc/rc.d/rc.sysinit
#tty1::respawn:/sbin/getty -n -l /bin/autologinroot 38400 tty1
tty1::respawn:/sbin/getty 38400 tty1
tty2::respawn:/sbin/getty 38400 tty2
::ctrlaltdel:/sbin/reboot
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8-bit


Joined: 03 Apr 2007
Posts: 3012
Location: Oregon

PostPosted: Fri 01 Jun 2012, 03:25    Post subject:  

I am running Puppy lupu 520 also known as Puppy Lucid.
And the information I gave works with it.
So maybe it varies depending on what version of puppy you are using.
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Semme

Joined: 07 Aug 2011
Posts: 2048
Location: World_Hub

PostPosted: Fri 01 Jun 2012, 04:12    Post subject:  

Ozsouth- I've come across that before and the part I left out. Mine's set this way..

With the above tweak and your own passwd- *woofwoof* doesn't work.. no bd.
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tytower

Joined: 24 Feb 2007
Posts: 440
Location: Green Island Cairns for the winter

PostPosted: Fri 01 Jun 2012, 06:44    Post subject:  

8-bit wrote:
I am running Puppy lupu 520 also known as Puppy Lucid.
And the information I gave works with it.
So maybe it varies depending on what version of puppy you are using.

I'm using 5.31 and as said it works on mine .

Seems if the following is done that closes that avenue .
ozsouth wrote:
If you rename /etc/inittab to inittab.old and save the attached code as /etc/inittab , you will be asked for the username & password on each bootup.


::sysinit:/etc/rc.d/rc.sysinit
#tty1::respawn:/sbin/getty -n -l /bin/autologinroot 38400 tty1
tty1::respawn:/sbin/getty 38400 tty1
tty2::respawn:/sbin/getty 38400 tty2
::ctrlaltdel:/sbin/reboot


So you are simply removing the autologinroot making it responsive to a new login as root but how is the "woofwoof" affected by this? Isn't this then somewhere in autologinroot or getty or perhaps rc.sysinit ?
Why is it there?

::ctrlaltdelete for me brings up the process manager btw



So would I be right in assuming if I find an open port on someones linux machine running Puppy unmodified as above I could then come in as Root using "woofwoof" and wreck havock?

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tytower

Joined: 24 Feb 2007
Posts: 440
Location: Green Island Cairns for the winter

PostPosted: Sun 03 Jun 2012, 06:58    Post subject:  

Geez - nobodys willing to touch this one ?

What do you think , is this a back door left there on purpose?
Could somebody do what I am suggesting?

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To stop corruption give them 3 times the penalty. Get their agreement on first employment.
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nooby

Joined: 29 Jun 2008
Posts: 9387
Location: SwedenEurope

PostPosted: Sun 03 Jun 2012, 08:03    Post subject:  

As I vaguely remember did not Barry tell us that woofwoof is the password
he has used for official puppies?

So when is that one used then? We should ask him Smile

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