Help/Support 修正されたipaファイルを作成する方法を知りたいです

[eve0208 1 iPhone 14 Plus 17.3.1]

I would like to create my own modified ipa file myself.The game crashes when I give IGG to an arbitrarily extracted ipa file and install it.I want to run it on an unjailbroken iPhone.
Is it because I need to decrypt?Is this because I need to do a process called "decryption"?
I hope someone can give me some advice.
Where should I ask these questions?

What I want to ask.
How to create an ipa file of any application (unjailbroken)
How to give an IGG to an ipa file and start it
∙ Software required for modification of ipa files and topics that can be referred to.

These are the things I would like to know.
Please let me know if you have any other advice.

Updated July 2, 2024 by eve0208

[Laxus 801.1k iPhone 5s 10.3.3]

Use the decrypted appstore to get decrypted ipa. Else you will need jailbroken iOS to decrypt yourself https://armconverter.com/decryptedappstore/us

Use Sideloadly to inject deb into IPA. To get iGG deb go here https://iosgods.com/igg

[eve0208 1 iPhone 14 Plus 17.3.1]

Thanks for your reply.
I will try to reproduce your advice.
Is there a topic where I can learn more about the ipa analysis process, how to do memory hacks in IGG, and the basics?