CRACKING PASSWORD ZIP MENGGUNAKAN JOHN THE RIPPER PADA KALI LINUX

 

Hello,today am going to show you how to crack password protected zip files in kali linux.

Kali linux is pre installed with password cracking tools namely:

1.John the ripper
2.Fcrackzip utility
3.Wordlists

We’ll focus more on john the ripper which is pre-installed in most unix operating systems.
However if your linux operating system lacks this tools,you can install or update the necessary packages with the following commands:

$sudo apt update


$sudo apt install john fcrackzip wordlists

John the ripper will use its own wordlist located in the /user/share/john/password.lst to crack the password.you can also locate all the wordlists in your system by typing the following command:

$locate wordlist




Step 1:create a password protected zip file
The only other thing needed to start is a password protected zip file.
Follow the steps:
Create a text file add some text and name it say hacker.txt.
Open the terminal in the directory and type the following command
$zip -password 12345678 hacker.zip hacker.txt

The command creates a zip file with the password of your choosing after the word password in the shell command above.
Replace the file names and paths to your own.

Step 2:get the password hash
To get the password hash to be cracked, we need to enter the command:

$zip2john testing.zip





Step 3:put the password hash in a text file
Type the following command :
$zip2john testing.zip > testing2.txt

Followed by:
$John testing2.txt

Sometimes you may need to customize or create your own wordlist or use a different wordlist the command follows the following format

$john –wordlist= the wordlist path saved hashes
I.e
$john --wordlist= /usr/share/wordlists/rockyou.txt hacker.txt

The time taken to crack each password varies with the strength of the password