Can smartphone firmware be able to sniff outgoing HTTP requests of an Android phone? [closed]

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Closed 5 years ago.

Can a mobile firmware app sniff all outgoing HTTP packets of a Wi-Fi network on a stock distribution device running Android OS connected to the fixed line (ADSL, for example).

In my understanding regarding what is stated here on PCAP page, for example, such is possible through custom firmware and by gaining root access. If so, could the firmware consist of something of a web proxy like Transproxy? I have doubts regarding the reliability of this approach because I know that there are apps that dont respect the central proxy settings (Firefox is one of them).

Or maybe the firmware could be implemented as an Android service that would act as hub for all outgoing HTTP traffic, by somehow forcing all the other apps to register to it?

Thank you!

Answer 1

The OS handles sending and receiving network data. Therefore the OS will also be able to look at the data if it wants to. I'm fairly sure this would have to be done at a system level, a service can't look at traffic from other apps.