Windows Password No. 2

Migroom [S. N.T]

2.2 Windows Password cleanup and cracking
With the increase in security awareness, many people have set a very complex computer boot password. For example, the author's boot password has been 36 characters, and is: numbers + uppercase/lowercase letters + special characters, and my habit is to change a different password within two weeks. Some people may find it safe to hear such a password, but this is not the case, it is not difficult to crack the password in Windows. Next I will teach you how to clear the boot password and how to crack the password.
 
2.2.1 local password cracking
Are you still sorry that you have intruded into the other computer and do not know the other computer password? Are you still worried that you forgot your password and cannot enter the system? If so, follow me to conquer them!
Preparation tool: LC5: L0phtCrack, or LC 5 for short. It is a required tool for network administrators and can be used to detect insecure passwords for Windows and UNIX users, it is also the best and fastest password cracking tool for Windows NT/2000/XP/UNIX administrator accounts.
Now let's start installing it. First we need to extract it, 2.3.

Next we can simply click "Next", because such similar software is basically dumbfounded and we don't need any time or technology to install it. On the Select installation type page, select "Modify" and "2.4", and click "NEXT.
 

Copy these three Files to the default directory C: Program Files @ stakeLC5 to overwrite, 2.5. The general directory is like this, 2.6. Now we can open and use it!

The software is now in the Chinese version, 2.7, but it is not yet available to register many features. Now the only thing we have to do is "register". clicking "register" will prompt us to enter the registration code, in this case, open our registration machine and generate the registration code. Enter the generated registration code and click "OK". Then, select the license to agree. The installation is complete, 2.8, 2.9.
 

Now let's open the software to see what it looks like, 2.10. When you open the software, we will give you an LC5 Usage Guide. If you have time, you can take a closer look, but now we don't need it.

Now let's start cracking the password of the local user, open the software and select "file-new session", 2.11. After opening the software, we can clearly see the interface, next, click "session-import from local computer" and finally confirm, 2.12, 2.13.
 

By importing the file, we can see the situation of the local user, 2.14. After importing the file, we can crack it. Click "start cracking" to start cracking the password, however, this attack is what we call "brute force cracking". It uses the brute force method to crack the attack. Therefore, the speed and success rate depend on the complexity of the password!
 

In a short time, the password will be cracked. This is because the password I set is very simple, so the speed is very fast, 2.15. The above mentioned brute force cracking, it uses our dictionary for "brute-force cracking". Therefore, as long as we have a large enough dictionary, complicated passwords can be cracked.

2.2.2 clear Local Password

Preparation tool: ERD Commander 2003 Boot CD commercial cracking disc. We use the CD Boot Method to start it, which can easily clear the passwords of all Windows system administrators or other accounts. To demonstrate that I made the CD into an ISO image file and used a virtual machine to operate ERD Commander 2003 Boot CD, 2.16.

Now we start to clear the Windows XP system password. For more intuitive testing, we change the system password to "123456", 2.17. In fact, even if you have many passwords, you can easily clear them. Here, 123456 is used to facilitate testing.

Now we restart the computer, and select CD-ROM mode to start, 2.18, then press F10 to save and exit, below we can see the entire system startup process, start loading into, 2.19. Loading is successful and you will be familiar with this startup screen. Is it like Windows XP? 2.20. Next we will start to read the system information. Here we can clearly see that ERD is working, 2.21. At this time, we will select the time zone and the keyboard language. At the same time, it will automatically detect the system version of our computer. You don't have to worry about it and it will be OK, 2.22. Now we can see the working environment of ERD. Are you familiar with it? 2.23.
 

 

Of course, in this environment, we can also see the data in the computer's hard disk and other things, and modify the data, at this time, someone may ask us if we don't know how to use the password ?, In fact, we only enter the ERD Commander 2003 virtual system. Now let's clear the password on the computer, open "Start -- Administrator Tools -- Locksmith", 2.24, and then click "Next", 2.25, at this time, we can see a "Select New Password" Page, 2.26, where "Account" is to Select the Account to be cleared "New Password" is to set a New Password, "Confirm Password" is to verify the new Password. Here we set the new Password to "1234567890" to test ". Then select "Next" Next will prompt "Finished" then it means it has been done, 2.27, click Finish to restart the computer and reset the CD-ROM set earlier back to Hard Drive. Now we can check whether the password has been changed successfully?