Cracking A Password Protected Zip File Using Kali Linux Hacking Tools We often use zipped files to store large files due to its small size and strong encryption algorithm. The zipping utility also comes with a facility of password protection which maintains the security of the files. However, sometimes it so happens that this feature turns into a nightmare if we forget the password. Hacking a password protected zip file can be done with many password cracker utilities available online. However, if you are a Kali Linux user, password cracking becomes that much more easy with an open source tool called fcrackzip. Fcrackzip is a fast password cracker partly written in assembler and available for Kali Linux.

• Cracking Zip Passwords

Ultimate ZIP Cracker can help you recover password-protected files that you have forgotten the password for. All you have to do is tell the program as much as. Here is a guide on how to open password protected zip file without knowing the password? Firstly recover unknown password, then open password protected zip file with. Here is a guide on how to open password protected zip file without knowing the password? Firstly recover unknown password, then open password protected zip file.

It is able to crack password protected zip files with brute force or dictionary based attacks allowing you to unzip files even with most hard passwords. Go to Application? Password Attacks? Offline Attacks? Fcrackzip Open Terminal type fcrackzip –help. This command will open fcrackzip with help options Syntax – fcrackzip –u –c –p zip file path Ex – fcrackzip –u –c 1 –p aaaaaaaa ‘/root/Desktop/Test.zip’ Here, The –u option, Try to decompress the first file by calling unzip with the guessed password. This weeds out false positives when not enough files have been given.

The –c option lets you select the character set, ‘1’ here means password also be numeric. The -p option lets you select an initial string to start brute-force attack. Note – as you can see the ‘aaaaaaaa’, if you will count this is total 8 digits for your password to be in 8 digits Syntax – fcrackzip –u –c -l zip file path Ex – fcrackzip –u –c 1 –l 4-8 ‘/root/Desktop/Test.zip’ In this example, the Zip file has small (lower case) alphabet digits as a password.

Here password is ‘abcdefgh’. If your password has small alphabets characters and length of the password is 8 digits. Syntax – fcrackzip –u –c –p zip file path Ex – fcrackzip –u –c a –p aaaaaaaa ‘/root/Desktop/Test1.zip’ Here we are using ‘a’ after –c because our password has small (lower case) alphabet. If you have doubt that the password has a upper case alphabet than replace ‘a’ with capital ‘A’. If you think that your password has both upper and lower case than you can write ‘Aa’. Just like this if you doubt your password has lower case (a), Upper case (A), numeric (1). You have to write there ‘Aa1’.

Cracking Zip Passwords

Syntax – fcrackzip –u –D –p Ex – fcrackzip –u –D –p ‘/root/Desktop/dic’ ‘/root/Desktop/Test.zip So finally we have an all-encompassing command for cracking the password protected file which should look like this fcrackzip -b -c ‘aA1!’ -l 1-10 -u filename.zip.

Ultimate ZIP Cracker can help you recover password-protected files that you have forgotten the password for. All you have to do is tell the program as much as you know about the password you're trying to recover, and then let it do the rest. Pros Flexibility: This program works on ZIP, Word, and Excel files, and its straightforward interface walks you through the process of selecting the file and entering information about the password. The program also uses multiple methods as it attempts to crack the password, giving it a better chance of succeeding, overall. Cons Trial limits: The trial version of this program only allows you to test it on a password that's less than five characters. This type of limitation doesn't really let you get a good sense of what the program can do and how well it would perform when faced with the challenge of longer and more complex passwords.

Effectiveness: Even in the trial mode against basic passwords, the program did not perform well. When it did manage to find the password, it took a long time, sometimes even a few hours. Bottom Line Ultimate ZIP Cracker can be a useful tool if you can give it enough information about the password it's attempting to reveal. But our tests did not indicate that this program would perform well against passwords that you have little information about, and as we noted, the trial limitations make it hard to see what the app can really do. The full version of the software costs $59. Editors' note: This is a review of the trial version of Ultimate ZIP Cracker 8.0.2.10. From Ultimate ZIP Cracker is designed for recovering lost passwords from many popular file types: MS Word documents, Excel documents, ZIP archives created by PKZIP, WinZip or by any compatible software, ARJ archives created by ARJ, WinArj, or by any compatible software.

It features brute force attack will test all possible passwords, smart search will test all pronounceable passwords, dictionary search can use a built-in or external dictionary, and date search will apply more than 5,000 date formats to a given date range.