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Executive Summary (TL;DR)
Obfuscation is key to adequately protecting your mobile application. Without it, you risk code theft, which happens when malicious actors are able to access your application’s underlying code. This can result in:
You’ve spent considerable time developing your app. The protection that obfuscation offers can help you avoid intellectual property theft, reputational damages, and loss of revenue. Let’s look at some of the best obfuscation techniques for your mobile app.
This type of obfuscation, also referred to as renaming, replaces readable names in your code with alternatives that are difficult to decipher. In name obfuscation, meaningful terms like class, field, and method names are swapped with meaningless strings that don’t change the program’s logic.
It’s important to note that while name obfuscation is one of the most common obfuscation techniques, it isn’t particularly useful as a sole technique when pitted against decompilers. Some decompilers use pattern recognition and semantic analysis to guess possible identifier names or rename identifiers using standard names. Consequently, we suggest developers avoid using name obfuscation as their sole technique; instead, you should combine it with at least one additional obfuscation technique.
There are multiple ways to implement control flow obfuscation. Developers may choose a simpler version (inserting opaque predicates) or a more complex form (inserting linked jump instructions) depending on their app’s needs.