If you do not have md5sum on your machine, you can copy and paste the hashes above and save it in a file called "hashes". If you want to hash different passwords than the ones above and you don't have md5sum installed, you can use MD5 generators online such as this one by Sunny Walker.
Now we can start using hashcat with the rockyou wordlist to crack the MD5 hashes. The rockyou wordlist comes pre-installed with Kali. If you are not using Kali you can use another wordlist, or download it from here. Towards the top of the output you can see the hashes that were cracked side-by-side with the plaintext password and hash.
From the output we can determine the following passwords we hashed were not in the rockyou wordlist:. Unless told otherwise, any hash that hashcat cracks will be stored in a hashcat. This will be created in directory where you ran hashcat.
In this mode, you can specify a path to a wordlist file that contains a list of possible passwords. John will test all the words contained in that wordlist and check if the correct password is present there.
This process is what is known as a Dictionary Attack. It is important that the wordlist contains one password per line. Otherwise, John the Ripper will not process it correctly.
If the correct password is in that file, John will display it. To increase the chances of finding a correct password, you can enable the wordlist mode with mangling rules. By doing this, John will slightly modify each word in the wordlist.
However, you should note that this will take a longer time to process the wordlist. The single crack mode is generally used when trying to crack Unix passwords. These GECOS fields normally contain information about the user, such as their username and their full name. John will generate a list of candidate passwords from these fields, and by using an extensive set of mangling rules which John does by default in the single crack mode , the generated list will be customized to each user.
When enabled, John will try every possible combination of characters within the specified charset and password length limit. This mode is what defines the charset to use and the password length limit. I've generated a list of MD5 hashes from a list of simple passwords, and we will use Hashcat to crack this list of MD5 hashes. Before hitting Enter, let's break down this command:. Now that we know what the parameters are doing, let's press Enter. After some time, Hashcat successfully cracked the MD5 hashes!
There are the plain-text passwords along with their MD5 hashes! For the sake of simplicity and clarity if you're following along, subsequent sections will use the same passwords but different hashing algorithms. For example, if repeating these tests you'll want to clear this file between tests otherwise your cracking results will be instantaneous since Hashcat already has these passwords cracked. We'll use the same command as we did for the MD5 hashes, but we will swap the -m 0 for -m We'll also need specify the different text files.
We can see that the NTLM hashes were also successfully cracked! This a perfect example of why everyone should use a secure password.
Again, these are the same passwords used in the MD5 hash listing, but the hashes are different as expected. Specifically, mask attacks that are much faster than traditional brute-force attacks due to intelligent guessing and providing a framework for hashcat to use -- you can read more about this at the Hashcat website and they utilize your GPU instead of your CPU.
The syntax here is slightly different from when we use a wordlist, but the core of it is the same.
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