Crack Nt4 Admin Password

1. Crack Nt4 Admin Password Recovery Tool
2. Admin Password Mac
3. Crack Nt4 Admin Password Windows 7
4. Crack Nt4 Admin Password Unlocker

What is Password Cracking?

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Password cracking is the process of attempting to gain Unauthorized access to restricted systems using common passwords or algorithms that guess passwords. In other words, it's an art of obtaining the correct password that gives access to a system protected by an authentication method.

Password cracking employs a number of techniques to achieve its goals. The cracking process can involve either comparing stored passwords against word list or use algorithms to generate passwords that match

In this Tutorial, we will introduce you to the common password cracking techniques and the countermeasures you can implement to protect systems against such attacks.

Topics covered in this tutorial

What is password strength?

Password strength is the measure of a password's efficiency to resist password cracking attacks. The strength of a password is determined by;

• Length: the number of characters the password contains.
• Complexity: does it use a combination of letters, numbers, and symbol?
• Unpredictability: is it something that can be guessed easily by an attacker?

Let's now look at a practical example. We will use three passwords namely

1. password

2. password1

3. #password1$

For this example, we will use the password strength indicator of Cpanel when creating passwords. The images below show the password strengths of each of the above-listed passwords.

Note: the password used is password the strength is 1, and it's very weak.

Note: the password used is password1 the strength is 28, and it's still weak.

Note: The password used is #password1$ the strength is 60 and it's strong.

The higher the strength number, better the password.

Let's suppose that we have to store our above passwords using md5 encryption. We will use an online md5 hash generator to convert our passwords into md5 hashes.

We will now use http://www.md5this.com/ to crack the above hashes. The images below show the password cracking results for the above passwords.

As you can see from the above results, we managed to crack the first and second passwords that had lower strength numbers. We didn't manage to crack the third password which was longer, complex and unpredictable. It had a higher strength number.

Password cracking techniques

There are a number of techniques that can be used to crack passwords. We will describe the most commonly used ones below;

• Dictionary attack– This method involves the use of a wordlist to compare against user passwords.
• Brute force attack– This method is similar to the dictionary attack. Brute force attacks use algorithms that combine alpha-numeric characters and symbols to come up with passwords for the attack. For example, a password of the value 'password' can also be tried as p@$$word using the brute force attack.
• Rainbow table attack– This method uses pre-computed hashes. Let's assume that we have a database which stores passwords as md5 hashes. We can create another database that has md5 hashes of commonly used passwords. We can then compare the password hash we have against the stored hashes in the database. If a match is found, then we have the password.
• Guess– As the name suggests, this method involves guessing. Passwords such as qwerty, password, admin, etc. are commonly used or set as default passwords. If they have not been changed or if the user is careless when selecting passwords, then they can be easily compromised.
• Spidering– Most organizations use passwords that contain company information. This information can be found on company websites, social media such as facebook, twitter, etc. Spidering gathers information from these sources to come up with word lists. The word list is then used to perform dictionary and brute force attacks.

Spidering sample dictionary attack wordlist

Password cracking tool

These are software programs that are used to crack user passwords. We already looked at a similar tool in the above example on password strengths. The website www.md5this.com uses a rainbow table to crack passwords. We will now look at some of the commonly used tools

John the Ripper

John the Ripper uses the command prompt to crack passwords. This makes it suitable for advanced users who are comfortable working with commands. It uses to wordlist to crack passwords. The program is free, but the word list has to be bought. It has free alternative word lists that you can use. Visit the product website https://www.openwall.com/john/ for more information and how to use it.

Cain & Abel

Cain & Abel runs on windows. It is used to recover passwords for user accounts, recovery of Microsoft Access passwords; networking sniffing, etc. Unlike John the Ripper, Cain & Abel uses a graphic user interface. It is very common among newbies and script kiddies because of its simplicity of use. Visit the product website https://www.softpedia.com/get/Security/Decrypting-Decoding/Cain-and-Abel.shtml for more information and how to use it.

Ophcrack

Ophcrack is a cross-platform Windows password cracker that uses rainbow tables to crack passwords. It runs on Windows, Linux and Mac OS. It also has a module for brute force attacks among other features. Visit the product website https://ophcrack.sourceforge.io/ for more information and how to use it.

Password Cracking Counter Measures

• An organization can use the following methods to reduce the chances of the passwords been cracked
• Avoid short and easily predicable passwords
• Avoid using passwords with predictable patterns such as 11552266.
• Passwords stored in the database must always be encrypted. For md5 encryptions, its better to salt the password hashes before storing them. Salting involves adding some word to the provided password before creating the hash.
• Most registration systems have password strength indicators, organizations must adopt policies that favor high password strength numbers.

Hacking Activity: Hack Now!

In this practical scenario, we are going to crack Windows account with a simple password. Windows uses NTLM hashes to encrypt passwords. We will use the NTLM cracker tool in Cain and Abel to do that.

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Cain and Abel cracker can be used to crack passwords using;

• Dictionary attack
• Brute force
• Cryptanalysis

We will use the dictionary attack in this example. You will need to download the dictionary attack wordlist here 10k-Most-Common.zip

For this demonstration, we have created an account called Accounts with the password qwerty on Windows 7.

Password cracking steps

• Open Cain and Abel, you will get the following main screen

• Make sure the cracker tab is selected as shown above
• Click on the Add button on the toolbar.

• The following dialog window will appear

• The local user accounts will be displayed as follows. Note the results shown will be of the user accounts on your local machine.

• Right click on the account you want to crack. For this tutorial, we will use Accounts as the user account.

• The following screen will appear

• Right click on the dictionary section and select Add to list menu as shown above
• Browse to the 10k most common.txt file that you just downloaded

• Click on start button
• If the user used a simple password like qwerty, then you should be able to get the following results.

• Note: the time taken to crack the password depends on the password strength, complexity and processing power of your machine.
• If the password is not cracked using a dictionary attack, you can try brute force or cryptanalysis attacks.

Summary

• Password cracking is the art of recovering stored or transmitted passwords.
• Password strength is determined by the length, complexity, and unpredictability of a password value.
• Common password techniques include dictionary attacks, brute force, rainbow tables, spidering and cracking.
• Password cracking tools simplify the process of cracking passwords.

Using NT Offline Password & Registry Editor

My purpose here is to provide guidance on how to use the NT Offline Password and Registry Editor. In the event that a user changes our local password, or something occurs to corrupt it, we can blank the administrator password, and reset it after the fact.

The editor can be downloaded from: http://home.eunet.no/pnordahl/ntpasswd/

You have burn the iso and an image so it will boot on the machine in question. Once that's done, place the CD in the machine you want to change the password for, and boot off it. The latest image will find the drivers for most and machine we use, and once it comes up, you'll see something to the effect of this:

Crack Nt4 Admin Password Recovery Tool

¤ Step ONE: Select disk where the Windows installation is

Disks:
Disk /dev/sda: 42.9 GB, 42949672960 bytes

Candidate Windows partitions found:
1 : /dev/sda1 40958MB BOOT

You'll then be given this screen:

Please select partition by number or
q = quit
d = automatically start disk drivers
m = manually select disk drivers to load
f = fetch additional drivers from floppy / usb
a = show all partitions found
l = show propbable Windows (NTFS) partitions only
Select: [1]

Since it's already seen your disk, just click ENTER. It will then mount the drive, and you'll see the following:

¤ Step TWO: Select PATH and registry files
What is the path to the registry directory? (relative to windows disk)
[WINDOWS/system32/config] :

The registry is usually system32/config under WINDOWS or WINNT directory, depending on the windows version (and it may be changed during installation).

Since this is the default, just click ENTER. This will open up the next series of selections. Select which part of registry to load, use predefined choices
or list the files with space as delimiter

1 - Password reset [sam system security]
2 - RecoveryConsole parameters [software]
q - quit - return to previous
[1] :

We want to Password reset, and since 1 is already preselected for us, just hit ENTER, and you'll eventually be led to this:

chntpw Main Interactive Menu

Loaded hives:

1 - Edit user data and passwords
2 - Syskey status & change
3 - RecoveryConsole settings
- - -
9 - Registry editor, now with full write support!
q - Quit (you will be asked if there is something to save)

What to do? [1] ->

Of course we want to Edit user data and passwords, so simply hit ENTER.

Loaded hives:

1 - Edit user data and passwords
2 - Syskey status & change
3 - RecoveryConsole settings
- - -
9 - Registry editor, now with full write support!
q - Quit (you will be asked if there is something to save)

What to do? [1] ->

Of course we want to Edit user data and passwords, so simply hit ENTER.

BE AWARE THAT THE ONLINE INSTRUCTIONS NOTES A SERIOUS WARNING WITH OPTION 2 (LIKE BAD THINGS CAN HAPPEN, REALLY BAD THINGS).

chntpw Edit User Info & Passwords
| RID -|---------- Username ------------| Admin? |- Lock? --|
| 03e8 | admin | ADMIN | |
| 01f4 | Administrator | ADMIN | dis/lock |
| 03ec | grumf1 | | |
| 03ed | grumf2 | | |
| 03ee | grumf3 | | |
| 01f5 | Guest | | dis/lock |
| 03ea | jalla1 | ADMIN | *BLANK* |
| 03eb | jalla2 | | *BLANK* |
| 03e9 | petro | ADMIN | *BLANK* |

You'll need to select the user name you want to change things for. By default ADMINISTRATOR is already selected for you, and if that's correct, just click ENTER.

You'll probably see something like this:

Account bits: 0x0214 =
[ ] Disabled | [ ] Homedir req. | [X] Passwd not req. |
[ ] Temp. duplicate | [X] Normal account | [ ] NMS account |
[ ] Domain trust ac | [ ] Wks trust act. | [ ] Srv trust act |
[X] Pwd don't expir | [ ] Auto lockout | [ ] (unknown 0x08) |
[ ] (unknown 0x10) | [ ] (unknown 0x20) | [ ] (unknown 0x40) |

Failed login count: 0, while max tries is: 0
Total login count: 3

Not a big deal, just march on. The next decision point is here when you see this:

- - - - User Edit Menu:
1 - Clear (blank) user password
2 - Edit (set new) user password (careful with this on XP or Vista)
3 - Promote user (make user an administrator)
(4 - Unlock and enable user account) [seems unlocked already]
q - Quit editing user, back to user select
Select: [q] > 1

Note that the decision to blank the password is more or less made for you, If you want another option, choose it now.

Option 1 will blank out the selected users password. You're almost done. Type ! and this quits the program.

Admin Password Mac

That leads us to this:

chntpw Main Interactive Menu
Loaded hives:

1 - Edit user data and passwords
2 - Syskey status & change
3 - RecoveryConsole settings
- - -
9 - Registry editor, now with full write support!
q - Quit (you will be asked if there is something to save)

Crack Nt4 Admin Password Windows 7

What to do? [1] -> q

Hives that have changed:
# Name
0 - OK

All that's left to do now is to save and quit:

¤ Step FOUR: Writing back changes
About to write file(s) back! Do it? [n] : y

Click y, and it blanks the selected users password.

***** EDIT COMPLETE *****

You can try again if it somehow failed, or you selected wrong
New run? [n] : n

* end of scripts. returning to the shell.
* or do whatever you want from the shell.
* However, if you mount something, remember to umount before reboot
* You may also restart the script procedure with 'sh /scripts/main.sh'

Hit CTRL-ALT-DELETE once this finishes. Eject the CD, and let it boot up.

Crack Nt4 Admin Password Unlocker

I want to thank the good folks at NT Password & Registry Editor, not only for their software, but for their excellent documentation which I liberally pilfered.

8 Comments

• Cayenne
  Michael W. Oct 15, 2009 at 03:01pm

  Thanks. This may come in handy one day.

• Mace
  rmuniz9336 Oct 15, 2009 at 03:14pm

  You're more than welcome. I got into this when one of our users brought in his laptop, he couldn't get in, and somehow the Admin Password wasn't working any longer (I think he did a bit more in there than he wanted to admit). Bottom line, it saved us rebuilding the machine.

• Pimiento
  James Fortunato Oct 16, 2009 at 07:23pm

  Great option. I have used it myself on many occasions and it works just great. And don't forget, sometimes you have to use it twice. Don't give up on it, especially if it's your first time using it. Make sure you complete the last section that writes back to the disc (step 4). Awesome software. Saved me a lot of time and effort and saved my customers a lot of money.

• Serrano
  lcarlson Oct 28, 2009 at 11:22am

  Wow! *Love* this tool! I stumbled upon it two days ago on my own, then spied this how-to (great by the way, thank you!).
  Neo geo bios retropie download. Well, the computer I used it on so far let me erase the passwords to get in. My question now is, I go in to control panel on the Administrator account, and when I try to put a new password on the account, it will not allow me to.
  What gives, and is there a way around this?
  Thanks Much,

• Mace
  benhar Mar 30, 2010 at 07:50am

  Going to try this now.

  BTW- the link has changed: http://pogostick.net/~pnh/ntpasswd/

  EDIT: It worked and is REAL easy to follow.

• Tabasco
  JamesBassMan Feb 4, 2012 at 12:11pm

  Does anyone have a copy of ntpasswd? PM me if you do, it is offline at this point.

• Ghost Chili
  Thanks A.J. Stringham Jun 6, 2014 at 06:13pm

  Thanks for this! Awesome! I have to do this with remote users sometimes and this will help a lot!

• Pimiento
  gordennavas May 25, 2017 at 10:45am

  NT Password used to work quite good for me but it seems not working properly on Windows 10. I made two password reset disk with both USB and CD with no success. if you have the same problem as me, then I suggest taking a look at the following tutorials (tested it on my Windows 10 laptop):
  https://community.spiceworks.com/topic/1287399-crack-a-windows-10-password
  https://www.uukeys.com/reset-windows-10-password.html
  https://null-byte.wonderhowto.com/how-to/recover-passwords-for-windows-pcs-using-ophcrack-0135358/