RAR Password Removal Made Easy: How a Hex Editor Can Save Your Day
How to Remove RAR Passwords Using a Hex Editor: A Step-by-Step Guide
Have you ever downloaded a RAR file and realized that it is password-protected? Maybe you forgot the password or maybe you never had it in the first place. Either way, you are stuck with a file that you cannot open or extract. What can you do?
remove rar password with hex editor
One possible solution is to use a hex editor. A hex editor is a software tool that allows you to view and edit the raw data of any file in hexadecimal format. Hexadecimal is a base-16 number system that uses 16 symbols: 0-9 and A-F. Each symbol represents 4 bits of data, so a byte (8 bits) can be represented by two hexadecimal digits.
By using a hex editor, you can manipulate the data of a RAR file and remove the password protection. This is not a guaranteed method, as some RAR files may have more advanced encryption or checksums that prevent tampering. However, it is worth a try if you have no other options.
In this article, we will show you how to remove RAR passwords using a hex editor in a few simple steps. We will use HxD as an example of a hex editor, but you can use any other hex editor of your choice. You can download HxD for free from here.
Step 1: Make a backup copy of the RAR file
Before you start editing the RAR file, it is always a good idea to make a backup copy of it. This way, you can restore the original file if something goes wrong or if the hex editing does not work.
To make a backup copy, simply right-click on the RAR file and select "Copy". Then, right-click on an empty space in the same folder and select "Paste". You should see a copy of the RAR file with the same name and a "(1)" suffix.
Step 2: Open the RAR file with HxD
Next, you need to open the RAR file with HxD. To do this, right-click on the RAR file and select "Open with". Then, choose HxD from the list of programs. Alternatively, you can launch HxD and drag and drop the RAR file into its window.
You should see something like this:
This is the hexadecimal view of the RAR file. On the left side, you can see the offset numbers that indicate the position of each byte in the file. On the right side, you can see the ASCII representation of each byte, if possible.
Step 3: Find and replace the password flag
The next step is to find and replace the password flag in the RAR file. The password flag is a byte that tells the RAR program whether the file is password-protected or not. If the byte is 00, then there is no password. If the byte is 80, then there is a password.
To find the password flag, you need to look for the hexadecimal string "52 61 72 21 1A 07 01 00". This is the signature of a RAR file that indicates its format and version. The password flag is located at offset 9 after this signature.
You can use the search function of HxD to find this string quickly. To do this, press Ctrl+F or click on "Search" and then "Find". In the dialog box that appears, select "Hex-values" as the data type and enter "52 61 72 21 1A 07 01 00" as the search string. Then, click on "OK".
HxD should highlight the first occurrence of this string in the file. You can see it in this screenshot:
The password flag is located at offset 0000000F in this example. You can see that it has a value of 80, which means that there is a password.
To remove the password protection, you need to change this value to 00. To do this, simply double-click on the byte and type "00". You should see something like this:
You have successfully replaced the password flag with a zero value.
Step 4: Save and test the RAR file
The final step is to save and test the RAR file. To save the file, press Ctrl+S or click on "File" and then "Save". HxD will ask you if you want to overwrite the original file. Click on "Yes".
To test the file, you can use any RAR program of your choice. For example, you can use WinRAR or 7-Zip. To open the file, simply double-click on it or right-click on it and select "Open with". Then, choose your RAR program from the list of programs.
You should be able to open the file without entering a password. You should also be able to extract the contents of the file to a folder of your choice.
Step 5: Enjoy your unlocked RAR file
Congratulations! You have successfully removed the password protection from your RAR file using a hex editor. You can now access and use the files inside the RAR archive as you wish.
However, please note that this method is not foolproof and may not work for all RAR files. Some RAR files may have more advanced encryption or checksums that prevent tampering. Some RAR files may also have multiple parts or volumes that require different passwords. In these cases, you may need to use other methods or tools to unlock your RAR files.
Also, please be careful when using this method and only use it for legitimate purposes. Do not use it to access or distribute files that are illegal, copyrighted, or belong to someone else without their permission. Respect the rights and privacy of others. a27c54c0b2