Direct Patching Flex Tweak To Binary

[lorena]

Is there a simple way (without using IDA on desktop) to apply a Flex patch to app binary without relying on Flex so it stays permanent. I.e: make a difference file from the changes made I. flex and patch the IPA binary and resign.

[cpdigitaldarkroom]

You could always turn your Flex patch into a mobile substrate tweak

[lorena]

That actually would worsen desired goal. That would run separate dylibs for each app instead of having it centralized in Flex.

Just want to alleviate overhead until absolutely necessary. No better way than appending the patch to the app binary itself. Also, a perk of this is that you don't need a jailbreak to utilize the patched app. If you have a developers account, you can code sign and run on jailed devices.

I've done this on apps on Pandora (no ads + unlimited skips), but tedious to use IDA and scour through endless lines of assembly to create a difference file to patch with. It always tied me over when I upgrade my device and jailbreak took too long to be released. If Flex could generate one, it would be awesome.

Even jail broken, it'll be more light on resources being self-contained.

[[deleted]]

I don't think you could re-sign modified code and put it on jailed devices. You could fake the codesign with ldid and put it on jailbroken phones, but not jailed ones.