Comment by matthewdgreen
14 hours ago
I really doubt this. Any such upload would be visible inside the WhatsApp application, which would make it the world's most exciting (and relatively straightforward) RE project. You can even start with a Java app, so it's extra easy.
If you claim REing a flagship FAANG application is "extra easy", either they need to be laughed out of the room or you do.
Does FAANG apps have antidebug or code obfuscation? At least for google their apps are pretty lightly protected. The maximum extent of obfuscation is the standard compilation/optimization process that most apps go through (eg. r8 or proguard).
Reverse engineering is easy when the source code is available. :)
The difference between source code in a high-level language, and AArch64 machine language, is surmountable. The effort is made easier if you can focus on calls to the crypto and networking libraries.
The source is available?
Understanding program flow is very different from understanding the composition of data passing though the program.
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Note that WhatsApp as a web client, too: https://eprint.iacr.org/2025/794