Help/Support Struggling to sideload any Supercell game on non-jailbroken device

[Lyzev 0]

Hi everyone,

I’ve been experimenting with sideloading decrypted IPAs of Supercell games on a non-jailbroken device using a free 7-day developer certificate, but I’m running into an issue where the app crashes immediately on launch.

So far, I’ve tried using Sideloadly with the injected sideload spoofer. I also tried using libSupport from Rednick16, but when I do that, I see an IPS log that looks like it may be failing because of PAC or entitlement-related issues. I also tested injecting a small dylib that sends a webhook just to check whether it ever gets executed, but from what I can tell, it never runs.

From what I’ve read so far, I’m guessing the problem might be related to entitlements in the main executable, such as Keychain access, Game Center, or other capabilities that a free provisioning profile does not support. Another possibility is that the app is detecting the modified signing environment and exiting early because of some anti-tamper or integrity check.

I’m mostly trying to understand what is actually happening here rather than just throwing random patches at it. A few questions:

When an app is signed with a free developer certificate, are unsupported entitlements stripped before launch, or does the app still try to use them and then crash when iOS denies access?

If all external extensions have been removed, would an instant crash usually point more toward an iOS-level permission/signing issue, or toward the app itself detecting that it is not running under the original provisioning profile and exiting?

For learning Mach-O binary analysis, what would be a good workflow for finding these kinds of startup checks? Are there common APIs or patterns worth looking for, such as Keychain calls, provisioning profile checks, or specific integrity checks?

Is the lack of certain Apple-signed entitlements a hard limitation on retail iOS, or are there cases where the app can be patched to avoid relying on those capabilities?

I’m not looking for a pre-patched IPA or a one-click solution. I’m trying to understand how to identify the actual failure point and analyze these kinds of startup crashes properly.

Any pointers, documentation, or general advice would be appreciated.

Thanks!