The implant has access to all the database files (on the victim’s phone) used by popular end-to-end encryption apps like Whatsapp, Telegram and iMessage. We can see here screenshots of the apps on the left, and on the right the contents of the database files stolen by the implant which contain the unencrypted, plain-text of the messages sent and received using the apps:
There’s something thus far which is conspicuous only by its absence: is any of this encrypted? The short answer is no: they really do POST everything via HTTP (not HTTPS) and there is no asymmetric (or even symmetric) encryption applied to the data which is uploaded. Everything is in the clear. If you’re connected to an unencrypted WiFi network this information is being broadcast to everyone around you, to your network operator and any intermediate network hops to the command and control server.
This means that not only is the end-point of the end-to-end encryption offered by messaging apps compromised; the attackers then send all the contents of the end-to-end encrypted messages in plain text over the network to their server.