Why Do Those Tweak Apps Crash On IOS 13?

By | February 23, 2020

Well, recently, all apps on the third-party Appstore cannot be used normally on IOS 13 and above systems, but the certificates they use are not revoked. When the app is opened, the app will crash. Why?

First of all, I would like to introduce to you what these third-party Appstore purchased certificates are. In fact, they can’t buy Apple enterprise developer accounts at all. The account sellers won’t sell them. They only buy three things: p12 file, embedded.mobileprovision authorization file, and then the password of the authorization file. Then these third-party appstores use these three things to call signature scripts to sign applications in batches.

Before that, when the apps cannot be used or is crash, the reason is very simple, that is, the certificate has been revoked. Why is the certificate not revoked now, and the application still crash? Through our research, we found that the two certificates “Mahindra and Mahindra Limited” and “Toyota Motor Finance (China) Co., Ltd.” that they used recently are the two big companies. Recently, Apple seems to have adjusted the policies related to the developer account, but this is not the root cause. In fact, the only reason is that the owner of the account revoked the embedded.mobileprovision authorization file artificially in the developer background of apple, so this led to the problem that the certificate was not revoked but the app crash. Another proof is that after cokernutx and appvalley signed spotify++ with a new certificate, apps can be used normally above IOS 13.

So, ask your favorite third-party Appstore to purchase new certificates. All apps will be normal!

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