1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

How to break Linux password

Discussion in 'Linux' started by bashu, Oct 8, 2007.

  1. bashu

    bashu New Member

    Joined:
    Nov 2, 2006
    Messages:
    4
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    bhopal
    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.
     
    MOHIDEEN THASTHAHIR likes this.
  2. shabbir

    shabbir Administrator Staff Member

    Joined:
    Jul 12, 2004
    Messages:
    15,292
    Likes Received:
    365
    Trophy Points:
    83
    I thought *nix was much more secure but lol you made it look different.
     
  3. pradeep

    pradeep Team Leader

    Joined:
    Apr 4, 2005
    Messages:
    1,646
    Likes Received:
    86
    Trophy Points:
    0
    Occupation:
    Programmer
    Location:
    Kolkata, India
    Home Page:
    A simple solution for this crack is to have a boot loader password! ;-)
     
  4. darsh999

    darsh999 New Member

    Joined:
    Oct 13, 2007
    Messages:
    7
    Likes Received:
    0
    Trophy Points:
    0
    Well its really awesome !
    I ll try it definately but in any case if we forgot the new password then what to do ?
     
  5. shabbir

    shabbir Administrator Staff Member

    Joined:
    Jul 12, 2004
    Messages:
    15,292
    Likes Received:
    365
    Trophy Points:
    83
    Try cracking it once again till you can remember it :D
     
  6. bashu

    bashu New Member

    Joined:
    Nov 2, 2006
    Messages:
    4
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    bhopal
    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". :)
     
  7. Izaan

    Izaan New Member

    Joined:
    Oct 16, 2007
    Messages:
    215
    Likes Received:
    2
    Trophy Points:
    0
    Even I had the same feeling.
     
  8. shabbir

    shabbir Administrator Staff Member

    Joined:
    Jul 12, 2004
    Messages:
    15,292
    Likes Received:
    365
    Trophy Points:
    83
  9. sundeep.kumar

    sundeep.kumar New Member

    Joined:
    Dec 20, 2007
    Messages:
    29
    Likes Received:
    0
    Trophy Points:
    0
    Occupation:
    Was MIS person once now just a student.
  10. lordbux

    lordbux New Member

    Joined:
    Sep 7, 2008
    Messages:
    3
    Likes Received:
    0
    Trophy Points:
    0

    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
     
  11. bashu

    bashu New Member

    Joined:
    Nov 2, 2006
    Messages:
    4
    Likes Received:
    1
    Trophy Points:
    0
    Location:
    bhopal
    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:
     
  12. pradeep

    pradeep Team Leader

    Joined:
    Apr 4, 2005
    Messages:
    1,646
    Likes Received:
    86
    Trophy Points:
    0
    Occupation:
    Programmer
    Location:
    Kolkata, India
    Home Page:
    Nice written bashu!
     
  13. jaydip

    jaydip New Member

    Joined:
    Mar 29, 2010
    Messages:
    10
    Likes Received:
    0
    Trophy Points:
    0
    Occupation:
    -
    Location:
    bangalore


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

    lionaneesh Active Member

    Joined:
    Mar 21, 2010
    Messages:
    848
    Likes Received:
    224
    Trophy Points:
    43
    Occupation:
    Student
    Location:
    India
    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"
     
  15. kumarmannu

    kumarmannu Banned

    Joined:
    Feb 2, 2011
    Messages:
    51
    Likes Received:
    0
    Trophy Points:
    0
    Thanks for share i will try it.
     
  16. MOHIDEEN THASTHAHIR

    MOHIDEEN THASTHAHIR New Member

    Joined:
    Feb 7, 2011
    Messages:
    10
    Likes Received:
    0
    Trophy Points:
    0
    Occupation:
    Maersk
    Location:
    INIDA
    thanks for ur informations.how to create the pdf file.
     
  17. joker.N7

    joker.N7 New Member

    Joined:
    Jun 7, 2011
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    0
    Occupation:
    hacker
    Location:
    hell
    Home Page:
    that's nice..!
    thanks dear
     
  18. edwardallene

    edwardallene New Member

    Joined:
    Apr 16, 2012
    Messages:
    11
    Likes Received:
    1
    Trophy Points:
    0
    Home Page:
    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.
     

Share This Page