How to open crypt7 ?

Question

Do it yourself

There is a database of watsapp messages, there is access to the phone on which it is installed. How can I decode this database? and is it possible to write an android application that can read the encoded base. As I understand it, on the android device there is a key for decoding the base.
Tell me where to start, where to dig?
PS: forum.xda-developers.com/showthread.php?t=1583021 studied, there is a suspicion that the article is outdated since the transition to a new type of encryption crypt7

Answer 1

Here everything is.
If there is no root, activate the USB debugging mode in the device, install the drivers, run the script from the archive in the article and the key is extracted and saved on the PC and in the device. Then you can decrypt the database.
Utility for viewing the database.