Cracking Microsoft Office Document Passwords for Free using Hashcat
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WonderHowTo Microsoft Office files can be password-protected in order to prevent tampering and ensure data integrity. But password-protected documents from earlier versions of Office are susceptible to having their hashes extracted with a simple program called office2john. Those extracted hashes can then be cracked using John the Ripper and Hashcat. Extracting the hash from a password-protected Microsoft Office file takes only a few seconds with the office2john tool.
While the encryption standard across different Office products fluctuated throughout the years, none of them can stand up to office2john’s hash-stealing abilities. This tool is written in Python and can be run right from the terminal. Step 1: Install Office2John To get started, we’ll need to download the tool from GitHub since office2john is not included in the standard version of John the Ripper which should already be installed in your Kali system.
This can easily be accomplished with wget. HTTP request sent, awaiting response Make Sure Everything’s in the Same Directory In order to run office2john with Python , we will need to change into the same directory that it was installed into. For most of you, this will be Home by default just enter cd , but feel free to create a separate directory.
Next, we need an appropriate file to test this on. I am using a simple DOCX file named “dummy. Download it to follow along.
The password is “password” as you’ll find out. You can also download documents made with Word and Word that shows up as to use for more examples. Passwords for those are also “password Extract the Hash with Office2john The first thing we need to do is extract the hash of our password-protected Office file. Run the following command and pipe the output into “hash. We can see that the hash I saved corresponds to Microsoft Office Crack the Hash You Just Saved Like already mentioned, we’ll be showing you two ways to crack the hash you just saved from the password-protected Microsoft Office file.
Both methods work great, so it’s really up to preference. Option 1: Cracking with John Set the –wordlist flag with the location of your favorite word list.
The one that is included with Nmap will do for our purposes here, but for tougher passwords, you may want to go with a more extensive word list. Press almost any key to view the current status. When the hash is cracked, a message will be displayed on-screen with the document’s password: Since our password was pretty simple, it only took seconds to crack it.
Option 2: Cracking with Hashcat We can begin by displaying the help menu –help for Hashcat. This will provide us with a wealth of information including usage options, hash modes, and other features. There is a ton of information here, so I won’t show the output, but you should dive into it if you really want to know Hashcat.
Near the bottom of the help menu, we will find the MS Office mode options and their corresponding numbers. We know from our hash that this is an Office file, so locate its number ID of The -m flag specifies the mode we want to use, which we just found. The –username option ignores any usernames in the hash file. We can specify the output file as cracked. And finally, we can pass in hash. Hashcat will then begin cracking. Not a native Intel OpenCL runtime. Expect massive speed loss.
You can use –force to override, but do not report related errors. OpenCL Platform 1: After some time has passed, the status will show as cracked, and we are ready to view the password. Cracked Hash. MS Office Hash. Tue Feb 5 Now we know two methods of cracking the hash after extracting it from a password-protected Microsoft Office file with office2john.
How to Defend Against Cracking When it comes to password cracking of any kind, the best defense technique is to use password best practices. This means using unique passwords that are long and not easily guessable. It helps to utilize a combination of upper and lowercase letters, numbers, and symbols, although recent research has shown that simply using long phrases with high entropy is superior.
Even better are long, randomly generated passwords which makes cracking them nearly impossible. In regards to this specific attack, using Microsoft Office or documents or newer may not be effective, since office2john is designed to work on earlier versions of Office. However, as you can see above, Office may very well spit out a document without the user even knowing, so it doesn’t mean a “new” file can’t be cracked. Plus, there are still plenty of older Microsoft Office documents floating around out there, and some organizations continue to use these older versions, making this attack still very feasible today.
Wrapping Up Today, we learned that password-protected Microsoft Office files are not quite as secure as one would be led to believe. These types of files are still commonly used today, so if you come across one that has a password on it, rest easy knowing that there is a way to crack it.
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It is used widely in several work related issues and is also one of the most preferred forms of uses and thus it is imperative that the document is protected and kept safe from the hands and the interference of others. Now one must make sure that the password that you are providing is complicated and uncommon so that people are not easily able to crack it. Nonetheless in situations when you have forgotten the password, it can be very frustrating and intimidating. Unlocking and Recovering Now these are situations where you have forgotten the password but times may also occur where you will be required to access the document of someone else which is password protected and these are times when you need to unlock the document. Nonetheless both the process will be quite the same. The instructions as mentioned by iSeePassword provides clear points that one needs to follow in order to make sure that the document can be accessed. But first of all, it’s necessary to teach you how to create a secure Word password and hope it helps you a lot.
VIDEO: 2 Easy Ways to Recover Protected Word Document Password | PassMoz
Crack Microsoft Word Password in Word , , Once you can see the file extension of your Word Document, change the file. Last night, my best friend Ann told me she was so helpless because she just got a read-only password-protected word file from her boss. She has no idea to. If you want to unlock a password protected word document? Have you forgot or misplaced your MS Word password? that you provided a password which is uncommon and complicated, so that no one can easily crack it.