让iOS签名的应用程序在越狱设备上执行未签名的应用程序

Question

I came across the following post about iOS jailbreak detection:

How do I detect that an iOS app is running on a jailbroken phone?

I would like to understand how to do what one poster suggested: GregH suggested bundling an unsigned / incorrectly signed executable inside of a signed executable and seeing if it could be successfully (sub-)executed on the device. My question is how does one get one app to execute another within itself? Especially in a way that a non-jailbroken device would complain / throw an error. I imagine getting it inside the other app is easy enough though: just build one app and put it in the directory of the other. If this is naive, though, I would also like to know how to do that properly.

I understand any solution would not be approved to the App Store.

Answer 1

This approach seems pretty pointless to me. On the one hand, you're likely to get rejected from the App Store, because your app has to be a single executable and bundling an additional executable is easily detectable by the reviewers. On the other hand, this would be trivial to circumvent. Someone with a jailbroken phone could simply replace your embedded executable with some garbage that wouldn't even run on a jailbroken phone...