I'll explain how I used to crack some LoL accounts.
0 - Download this package:
1 - Get some usual passwords. Put them insite the folder "joinUsersAndPass" named as "pass.txt" (Insite the package you'll find one exemple)

• https://wiki.skullsecurity.org/Passwordsyou can find another ones.

2 - Open the WZSCraper to get some usernames.

• Select a site
• Select a region
• Mark the option: "Export only usernames"
• Put a interval in Start# - Stop# (for exemple: 10000 - 10500)
• Click in Srcap!
• Wait until it finnish
• Click in Export. Put them inside the folder "joinUsersAndPass" named as "users.txt" (Insite the package you'll find one exemple)​​

​3 - Now you need to create the combo, joinning users.txt and pass.txt. To do this, I create the joinUsersAndPass.exe (the code of this program is inside the package (joinUsersAndPass.cpp) and you can read and make sure that is safe to use, is pretty simple and anyone with a little know of programming can understand).

• Execute the joinUsersAndPass.exe or compile the source code by yourself.
• Select one of the 3 options. 1, 2 or 3. And press enter.
• 1 - Combinate: will mix the other 2 options. Recommended
• 2 - Dump: create simple pass using the username. For exemple: banana:banana123.
• 3 - Huge: this one will create take the info of pass.txt and put witch each of username
• Keep in mind that this is a exponential process and will create a huge .txt. Do not use big intervals in step 2!

4 - Now, lets put our PC to work...

• Execute the LoLCracker.exe.
• Go to proxy tab and click in start grabbing proxies.
• Wait until it finnish.
• Go to Cracker tab, select the region (need to be the same of step 3).
• Select que max quantity of threads (I recommend to use something like 500~675)
• Click in start with own combos and select the combo.txt that you create in step 3.
• GOOD LUCK!

Sorry for bad english!