For some reason, Twilio has disabled the ability to install the iPad version of Authy on Apple Silicon Macs. With Authy Desktop also being discontinued, this means that there is no longer an official way to use the Authy app on macOS anymore. This guide is a workaround I found to trick sideloaded versions of Authy into signing in successfully, and using that with a sideloaded version of the Authy iPad app on macOS gives us the ability to use Authy on Mac again.
What's needed for this guide:
- An iOS/iPadOS device with Authy installed normally
- An Apple Silicon Mac with Authy sideloaded
- mitmproxy
- A decrypted and signed Authy IPA
- Technical skill and patience