Tool introduction:
Fcrackzip is a tool for cracking the password of zip compressed files. The tool is small and convenient, and the cracking speed is fast. It can use the dictionary and the specified character set to crack. It is suitable for linux and mac osx systems.
Operation process:
1. Install Fcrackzip
1.1 First, we use the apt-get update command to update the source. 
1.2 We use the command apt-get install fcrackzip to install this cracked software, and wait for a while to complete the installation. 
Second, the use of Fcrackzip
2.1 We execute the fcrackzip –help command to view the command parameters of this software. 
2.2 First, we create a file named test in the main directory. 
2.3 Now we use the command zip --password 12345 test.zip test to compress the test file into a compressed file in the format of zip, the password is password and the compressed file name is test.zip. 
2.4 Now we first try to use brute force to crack this zip file.
Now we use the command fcrackzip -b -c '1' -l 1-6 -u test.zip, -b (using brute force cracking), -c '1' (only numbers in the password), -l (the password length is 1-6), -u (target name). You can see the screenshot, we have successfully obtained the compressed package password through brute force cracking. 
2.5 Now we try to use the dictionary file to crack it.
2.5.1 First we create a dictionary and name it pwd. (There are a lot of ready-made dictionary files on Baidu, you can also use the dictionary generation software in kali to generate the dictionary, because I am doing a demonstration here, so I just enter a few numbers) 
2.5.2 We can use the command fcrackzip -D -p /root/pwd -u test.zip where -D (use dictionary to crack), -p (dictionary path), -u (target name).
You can see that we cracked the compressed package password again using the dictionary.
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