WhatsApp Desktop Client Code

47 lines (26 with data), 1.8 kB

#summary Describes how Whatsapp checks if an account exists or not

=Accounts=
Without you knowing, you have an account on the Whatsapp servers. The username for this account is your phone number and the password is somewhat diffucult.


==Phone number==
When authencating to the Whatsapp servers you need a phone number and the country code. The country code will always be written without any symbols except the two numbers, for example for The Netherlands this would be: 31.

For example, if the full phone number would be +31611223344 then this could be written as:

*Country code: * 31
*Phone number: * 0611223344

Thus, replacing the country code with a 0 in the phone number results in the phone number used by Whatsapp.


==Password==
The way the password is generated differs per mobile operating system. 

===iOS===
On iOS the password starts with the Wifi Mac Adress (en0). This can be found under Settings - > General -> About - > Wifi Adress. To create the password you should follow the following:

AdrressAdress -> md5

Which means that if my Wifi Adress would be 11:22:33:44:55:66 the steps would be as following:

11:22:33:44:55:6611:22:33:44:55:66 -> Md5

_Note: The MD5 hash must always be suplied in lowercase._


===Anything else beside iOS===
For all other mobile operating systems that Whatsapp supports the password can be generated as following:

IMEI -> reverse -> md5

The IMEI number can be found by dialing *#06#. 

_Note: The MD5 hash must always be suplied in lowercase._

=Does this account exists?=
If you have all information described in this article you can check if a account exists:

http://r.whatsapp.net/v1/exist.php?cc=COUNTRY CODE&in=PHONE NUMBER WITHOUT COUNTRY CODE&udid=PASSWORD

The result of this HTTP request is some XML code indicating if your account is valid or not.