This is an original research, please mention me or link this post if you forward this article to any other medium.
Unlike other articles which are for pro-users and developers. I will try to explain as detailed as I can in this article since it’s a very serious security issue for most iOS users. In Sep. 2019, security researcher @axi0mX found an epic exploit of most iOS devices, which named “checkm8”. It’s a bootrom exploit, which can’t be patched with any future iOS software updates.
And few days ago, the first jailbreak tool which based on checkm8 exploit was released, the tool is “checkra1n”.
Before you start to do anything, please read the following descriptions, they are very important.
The Taiwanese (Republic of China) flag emoji “🇹🇼 ” is banned for China users for a long time. This feature even caused a bug on iOS 11.4 and below. However, users live in Hong Kong found that since iOS 13.1.1, Apple banned Taiwanese (ROC) flag in iOS emoji keyboard.
昨天在逆向 iOS Emoji 的時候，中途路過逆向了一下 iOS 的 ResponseKit framework。不看還好，看了一下發現，哇，怎麼會有「他媽的」在程式裡面啊，於是研究了一下，發現各個語言都有一個列表，裡面大部分都是負面、粗俗、罵人的詞彙。所以讓我們來看看 iOS 裡面到底藏了什麼髒話吧！