Originally Posted by HtheB

You can use WART.

Download WART from:
https://github.com/shirioko/WART

Run it on your PC
Enter your phone number and ask for a code. or if you already have a code, you can enter it (no need to enter the "-" (dash) when entering the code)
then write down the password that you will get.

Then edit the file as normal user:

Code:

/home/user/.config/cepiperez/whatsup.conf

on line 13, you will see password. place the password over there.
it will look like this:

Code:

password="9Xy2345RLVByRxg6aeFJ7mvZ3X9="

and you're done! no need to register or enter some code on your phone.