Most free trial versions will only crack short passwords. If a program not listed here offers unlimited cracking for free, refrain from downloading it as it may be malware. Expect this process to take a large amount of time. Most password-cracking programs will take several hours to guess the simplest of passwords; realistically, you can expect this process to take several days to complete.
There is no way to routinely guess the password within a few minutes. Any service claiming to do so is most likely malware. Close background programs. You'll need as much of your computer's processor speed as possible, so close any processing-heavy programs such as Photoshop, video games, audio and video players, and so on. Even with your computer's maximum amount of processing speed allocated to cracking the ZIP folder's password, the process can still take days. Place your ZIP folder on the desktop. The desktop is the most-easily accessed location on your computer, so drag the ZIP folder onto the desktop before attempting to crack its password.
If the ZIP folder is on a mobile item such as a smartphone or a tablet, transfer the folder onto a computer before proceeding. Understand how this method works. John the Ripper is a free, command line-based program that can be used to crack passwords. Unfortunately, while it is free, it can be tricky to install and use. Extract John the Ripper. Double-click the downloaded ZIP folder, click the Extract tab, click Extract all , click Extract , and wait for the window to open. Install John the Ripper. John the Ripper can't be installed like normal programs, but you can install it to your desktop by moving its folder there and then renaming it to "john": In the extracted window which opens, click the "johnj1w" folder.
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Open Command Prompt. This is your computer's command line program: Click Start. Change the directory to John the Ripper's "run" folder. Enter the "run" command. Type in zip2john. For a ZIP folder named "hello", for example, you'd type zip2john.
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Define the ZIP folder's hash. Type in name. At this point, you're ready to begin cracking the password.
2 steps to unpack password protected archive file
Begin cracking the password. Type in john. John the Ripper will begin comparing your ZIP folder's password to its database of passwords.
The "password. Prompt the cracked password to display. Once the password has been determined, you'll see "Session complete" appear at the bottom of Command Prompt. At this point, you can type in type name. Understand how this works. Most professional password-cracking software will allow you to crack a file's password if it's under a certain number of characters. In order to crack most files, though, you'll need to purchase the program.
The positive side of using these programs is that they are usually user-friendly. Know what to look for. Your selected password cracker should come with a free trial, and it should be able to use brute-force password techniques. Download and install a professional password cracker.
How to Extract (Unzip) a Password Protected Zip File on Mac OS X
Open your password cracker. Once you've installed your password cracker, open it by clicking or double-clicking its program icon. Select your password-protected ZIP folder. You'll usually do this by clicking Browse , Open , or Add in the program, selecting the ZIP folder that you want to crack, and clicking Open or Choose. Some password crackers may allow you to click and drag the ZIP folder into the program's window. Choose a password-guessing option. In most cases, you'll want to select the Brute force option, but you may be able to select Dictionary or similar to check a list of words similar to one that you input.
The Dictionary method is best used for instances in which you either know part of the password or know the phrase that you used but not the capitalization or characters. Start cracking the ZIP password. Click the Start or Run button in your application, then wait for the password to finish cracking. As mentioned previously, this process may take days to complete. Review the cracked ZIP password. Once the password has been cracked, you should see a notification in the program. If password protected zip file is in your computer now, click Open button to browse computer and select it.
How to unzip password protected zip file without password
If not, for example, it is on your external storage device, connect the device to computer first, and then browse external device to select zip file. Under Type of attack option, Brute-force, Mask, Dictionary and Smart are four workable recovery attack types for zip file. Select one from them you think is appropriate and make password attack settings for it. Please pay attention to this step, because it largely determines how much time you would spend on zip file password recovery.
Click Start button, and about few minutes or seconds later, a dialog will appear with some characters. That is what you need, zip file password. Extraction path and options dialog appears. Make sure the Destination path and click OK. Do you think the above steps are effective and safe, no matter recovering password protected zip file password, or unzip password protected zip file with password in WinRAR? Just have a try and you would find its effectiveness and convenience.