How to hack/crack a password in Windows?

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DISCLAIMER: This content is provided for educational purposes only. We strongly emphasize that it should not be misused in any way. Any misuse of the information provided is strictly prohibited and is the sole responsibility of the individual engaging in such activities. We do not endorse or condone any illegal or unethical behavior. Remember that with knowledge comes responsibility. Always act with integrity and respect for others' rights and privacy. Security-Lock

This article demonstrates why leaving your system unlocked while away can pose significant security risks. Imagine if you walked away from your PC leaving it unlocked, and someone gained access to your system by extracting registry values. Let's explore how this scenario could unfold:

We need the following registry values:

  • HKLM\sam
  • HKLM\system

These registries can be saved using the following commands:

reg save HKLM\sam <Path to store>
reg save HKLM\system <Path to store>

Once these files are saved and copied to our Kali machine, we can utilize a tool called "Impacket Secretdumps". To check if the tool is installed on your Kali Linux, run the following command in the terminal:

sudo apt search impacket

If the tool is installed, proceed with parsing the SAM and SYSTEM files using the following command to retrieve the Username and associated Hash:

impacket-secretdumps -sam <SAM file path> -system <System file path> LOCAL

After executing the above command, you'll receive output containing the hash of the username. We can now attempt to decrypt it.

With the username and hash obtained, save the hash file in a text file. You'll also need a list of possible passwords. Various tools are available to generate such a list, with CUPP being one of them.

Now, utilize the HASHCAT tool to crack the hash and obtain the password:

sudo hashcat -m 1000 <hash file> <password file>

Here, -m denotes the hash mode, with 1000 representing the NTLM hash mode. Upon running the command, you'll witness the password being cracked.

To retrieve the cracked password, use the --show switch with the aforementioned command.

Now armed with the username and password, you can even remotely access the compromised PC. Tools like evil-winrm provide a shell of the remote machine, while xfreerdp offers the GUI of a remote PC. These tools are commonly used in cybersecurity and penetration testing.

Remember, with great power comes great responsibility. Always use your knowledge ethically and respect others' privacy and security.

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