Accessing the Comp. as an Administrator in a Locked Environment

If you can log in as an account in WIn NT then go to MS-DOS -> run -> command, at the C: prompt type the following

C:\> cd \winnt\system32 
C:\winnt\system32> copy logon.scr logon.scr.old 
C:\winnt\system32> del logon.scr 
C:\winnt\system32> copy cmd.exe logon.scr 

Now log off the machine, logon.scr is the screen saver that will kick in after 15-20 minutes of not touching the keyboard/mouse at the logon screen. Wait 15-20 minutes and a DOS prompt with FULL SYSTEM rights will pop up, then just to 
C:\> net user administrator 
and then log in with the new account.

Try this, might work, as long as the administrator has not changed default permissions or access rights on C:\winnt and C:\winnt\system32


Thanx @ ..............................

How To Hack Windows 7 password using ophcrack

In this tutorial i will teach you to hack Windows 7 password using free open source software called ophcrack. This hack also works on Windows XP and Windows Vista. So let get started. 

What Is Ophcrack ?

Opcrack is an open source windows password cracker based on rainbow tables. It comes with Graphical user interface(GUI) and runs on multiple platform such windows, linux and mac.  It allows you to recover or hack windows password.

How To Crack Windows 7 Password Using Ophcrack ?

Before you start doing this you will need a blank CD or DVD to burn the live image of ophcrack.

  1. Download Opcrack Live Cd by Clicking Here. Download windows xp or windows 7 live cd depending on platform you are wishing to hack. For example:

• Windows 7 or Windows Vista: Click on ophcrack Vista/7 LiveCD.
• Windows XP: Click on ophcrack XP LiveCD.

  2. Now burn the live image on to the cd.

  3. Insert the disc into drive and restart you computer.

  4. If everything goes right you will see screen like below.

5. After you see screen like above wait for ophcrack to boot automatically or you may press Enter to advance.

  6. Now you will see several lines of code printed on screen or they might disappear very quickly (you dont need to worry about that).

  7. Then you will see screen like below it is ophcrack password recovering software. At the Ophcrack screen it shows the Administrator and Guest account. Notice the word “empty”. This means that if the account is enabled you could log in without a password.

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8. Ophcrack WILL NOT CRACK THE PASSWORD because the hash table which it needs is not available for free. But it does show the NTLM hash.

  9. Copy this hash value which is under NT Hash field.

 10. Navigate to http://crackstation.net/ which is an online hash cracking tool.

 11. Type in the hash value you copied down in step 9, Enter the captche and click on Crack Hashes.