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-   -   How to break Linux password (http://www.go4expert.com/articles/break-linux-password-t6730/)

bashu 8Oct2007 10:34

How to break Linux password
 
well cracking the linux password is not a very difficult job when u login by root you can do that directly by
[-]#passwd <username>
he will ask u to type your new unix password ,enter the new unix password.
then he will ask u to retype password ,do the same
u can break any unix account password by this method
for "root" u don't need to write username of root while using "passwd" command,ucannot break password of root by any normal user.

now suppose u r administrator and u forgot ur password then on boot loader screen
press "E"
then edit first line of boot loader and type
........................................... 1 and press "b" to boot from single user mode
then it will throw u to shell prompt
sh....#
then use "passwd "command to change the password of root
sh....#passwd
now he will ask u to type ur new password,and retype it
after doing this use reboot command and start the system in runlevel 3 or five and type your
new root password.

shabbir 8Oct2007 11:30

Re: How to break linux password
 
I thought *nix was much more secure but lol you made it look different.

pradeep 10Oct2007 11:35

Re: How to break linux password
 
A simple solution for this crack is to have a boot loader password! ;-)

darsh999 14Oct2007 01:00

Re: How to break linux password
 
Well its really awesome !
I ll try it definately but in any case if we forgot the new password then what to do ?

shabbir 14Oct2007 05:29

Re: How to break linux password
 
Quote:

Originally Posted by darsh999
Well its really awesome !
I ll try it definately but in any case if we forgot the new password then what to do ?

Try cracking it once again till you can remember it :D

bashu 18Oct2007 16:08

Re: How to break linux password
 
well in case u forget ur new password
u can go to boot loader screen and again start ur computer
in run level 1 in single user mode,then it will bring u to shell prompt
frm there u can again run the "passwd" command and change or retype ur old password
but in case u have a boot loader with password u cannot break ur linux root password. as if u forget ur boot loader password it will not allow u to edit at ur linux screen and u cannot do the rest of the job.fr that u have to use "rescue". :)

Izaan 20Oct2007 11:26

Re: How to break linux password
 
Quote:

Originally Posted by shabbir
I thought *nix was much more secure but lol you made it look different.

Even I had the same feeling.

shabbir 18Nov2007 21:32

Re: How to break linux password
 
The Article is selected for Article of the month for October 2007. Now every one can vote for it to be the winner.

sundeep.kumar 21Dec2007 02:59

Re: How to break linux password
 
hi guys

lordbux 13Sep2008 01:03

Re: How to break linux password
 
Quote:

Originally Posted by shabbir
I thought *nix was much more secure but lol you made it look different.


greetings all
for your kind information

:happy: :happy:
i have to laugh to this

linux is the most secure of all Os available.
and the hacking methode that is explained here is equal to saying
" IF I HAD A KEY TO THIS DOOR I COULD OPEN IT" ..blah

being a root user means that you are the master
and its no wonder a master can control his well trained dog -> Linux (penguin actually) .

anyway the new distros dont allow anyone to be the root user
it only have a substitute user or sudo command to do admin tasks

so dont panic
you are safe with the guard penguin

for any details or security help
contact em anytime ...and it is opensource
so free service
lordbux@gmail.com

bashu 29Sep2008 22:05

Re: How to break linux password
 
well above method was only to tell u how to break password when u forgot urs,there r other methods also like by using "rescue mode" ,i m talking about changing ur password when u r the administrator,logged on,or wn u r unable to login cause u forgot ur password
nothin is related to hacking into someones computer its just a simple trick discussed here.
in industries u dont get access to root account,and if u want to login by second method ie by boot loader screen they have a boot loader password assigned so that u cannot edit at that screen,if furthur u have a cdrom of linux and u want to get access by "linux rescue",they dont provide cdroms in their pc,or its kernel module is removed.
no doubt linux is secure,the above method ws just to get access to your account wn u forgot ur password, as a good linux user u must know all these tricks

administrators dont make such mistakes

there r many other methods by which u can gain access to ur account wn u loose ur password. linux has many methods to do same job.

no doubt you are safe with the guard penguin :nice:

pradeep 30Sep2008 00:12

Re: How to break linux password
 
Nice written bashu!

jaydip 8Apr2010 10:46

Re: How to break linux password
 
Quote:

Originally Posted by bashu (Post 19243)
well in case u forget ur new password
u can go to boot loader screen and again start ur computer
in run level 1 in single user mode,then it will bring u to shell prompt
frm there u can again run the "passwd" command and change or retype ur old password
but in case u have a boot loader with password u cannot break ur linux root password. as if u forget ur boot loader password it will not allow u to edit at ur linux screen and u cannot do the rest of the job.fr that u have to use "rescue". :)



hi dear,
can u tell me what is run level ?
and how to start pc in run level 1 or 2?
thanks in advance.

lionaneesh 8Jan2011 10:04

Re: How to break linux password
 
Latest and some modified *nix systems...
Doesn't allow to be root..
Only pass away the privileges for some time...

So you are secured if you know how to be secured...

Later the second method :-

Actually its deliberately left by *nix developers so that if we loose our password there is some way to reset it...

But you could guard that also by setting a "boot loader password"

kumarmannu 16Feb2011 14:42

Re: How to break linux password
 
Thanks for share i will try it.

MOHIDEEN THASTHAHIR 17Feb2011 09:45

Re: How to break linux password
 
thanks for ur informations.how to create the pdf file.

joker.N7 8Jun2011 17:50

Re: How to break linux password
 
that's nice..!
thanks dear

edwardallene 30Apr2012 13:04

Re: How to break linux password
 
Wow, sounds great. I just thought that Linux is very secured among OS and here it is, the way of cracking password. =) You made it different by all this means.


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