Using python zipfile to find the zip password

Question

First let me just say I'm a pretty noob programmer, but still I'm not the kind of guy that decided he wanted to make a MMO game. My question relates to zip files.I've been researching and I couldn't find how to use the zipfile module. My idea is that you will put in the path of the zip, and out comes the password.

Here's the command I found that I thought I code use

ZipFile.open(name, mode='r', pwd=None)

But the problem is I have no idea what i'm doing.

Answer 1

You have one way of doing this and it is brute force.

So you would need a brute force algorithm (of your own liking or design) and/or a rainbow table that supplies your script with passwords. After that you just iterate over it in a loop until you find your password.

https://docs.python.org/2/tutorial/errors.html#handling-exceptions

This is simplified an non optimised code

rainbowTable = ['Password', '123abc', 'qwerty', 'qwerty123'] # etc...
x = 0
data = ''
for x in xrange(len(rainbowTable)):
    try:
        data = ZipFile.open(name, mode='r', pwd=rainbowTable[x])
    if data != ''
        break

As pointed out, the solution above is unpythonic (but imo easier to grasp if you come from another language). This is how it should be written.

for password in rainbowTable:
    try:
        data = ZipFile.open(name, mode='r', pwd=password)
    if data != ''
        break
    else:
        print password 

Python however is not the best choice. You would probably want to use C for this specific task.

Here is a real world example of a Python example: https://github.com/igniteflow/violent-python/blob/master/pwd-crackers/zip-crack.py

From the sample:

try:
    zip_file.extractall(pwd=password)
    password = 'Password found: %s' % password
except:
    pass
print password

The total amount of code is 17 lines so i recommend reading it for better understanding.