Sunday, 29 April 2012

Learn cmospwd on Backtrack 5


Cmospwd

Learn cmospwd on Backtrack 5 

cmospwd on backtrack 5


Introduction
  1. cmospwd is used to crack the BIOS(Basic Input Output System) password .
  2. cmospwd is free tool and distributed under GPL .
  3. cmospwd is created by  " GRINIER Cristophe ".
  4. With this tool you can erase/kill ,backup and restore the cmos.
  5. Before start cracking the BIOS its very important to read this link carefully - http://www.cgsecurity.org
  6. The above link shows some instruction related to your eeprom chip . 
  7. Cmospwd works with these BIOSES - 
     ACER/IBM BIOS
     AMI BIOS
     AMI WinBIOS 2.5
     Award 4.5x/4.6x/6.0
     Compaq (1992)
     Compaq 
     IBM (PS/2, Activa, Thinkpad)
     Packard Bell
     Phoenix 1.00.09.AC0 (1994), a486 1.03, 1.04, 1.10 A03, 4.05 rev 1.02.943, 4.06 rev .13.1107
     Phoenix 4  
     Gateway Solo - Phoenix 4.0 release 6
     Toshiba
     Zenith AMI
How to open cmospwd 

To open cmospwd , follow the path :

Backtrack > Forensic > Password Forensics Tool > cmospwd 


cmospwd on backtrack 5

CmosPwd - BIOS Cracker is open now - 

cmospwd interface


How to use CmosPwd 


To start the cmospwd , you have to give the command -


Command : ./cmospwd /k


As you enter the command and press the ENTER KEY  , it will ask you to choose the options ,as shown in the image below - 


In this image , I have selected option 1 and then it will display a message
                               " Remember to set the date and time " .


After killing the Cmos , it will erase your previous time and date setting . So set it again your current time and date , otherwise it will create a problem to connect your browser with internet ( a problem related to time server ) . 


So , if you face this problem , then the only solution is to set your time and date again either from " time and date settings "or from your system " BIOS " .


how to use cmospwd on backtrack 5


Option 2 :  This is your second option what happen if you select option 2 .

It simply killed the cmos  as shown below - 
 cmospwd options on Backtrack 5

This is how we can use CmosPwd  Tool 

Remember that  On laptops, the password is usually stored in an eeprom on the motherboard and not in the cmos. You need an eeprom programmer/eeprom reader (electronic device) to retrieve the password. If you erase the cmos (ie. cmospwd /k) and if the password is really stored in an eeprom, you won't be able to boot anymore..

So be careful before using this tool . 

THIS ARTICLE IS JUST FOR EDUCATIONAL PURPOSE ONLY , IF ANYTHING HAPPENING WITH YOUR HARDWARE I AM NOT REPOSIBLE FOR IT . / - 

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Reference Website : www.cgsecurity.org

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