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Code morphing is an approach used in obfuscating software to protect software applications from reverse engineering, analysis, modifications, and cracking.This technology protects intermediate level code such as compiled from Java and .NET languages (Oxygene, C#, Visual Basic, etc.) rather than binary object code.
In software development, obfuscation is the practice of creating source or machine code that is intentionally difficult for humans or computers to understand. Similar to obfuscation in natural language, code obfuscation may involve using unnecessarily roundabout ways to write statements. Programmers often obfuscate code to conceal its purpose ...
ProGuard is an open source command-line tool which shrinks, optimizes and obfuscates Java code. It is able to optimize bytecode as well as detect and remove unused instructions . [ 4 ] ProGuard is free software and is distributed under the GNU General Public License , version 2.
Informally, such obfuscation hides the implementation of a program while still allowing users to run it. [1] Formally, iO satisfies the property that obfuscations of two circuits of the same size which implement the same function are computationally indistinguishable. [2] Indistinguishability obfuscation has several interesting theoretical ...
DashO is a code obfuscator, compactor [clarification needed], optimizer, watermarker [clarification needed], [2] and encryptor for Java, Kotlin and Android applications. [3] It aims to achieve little or no performance loss even as the code complexity increases.
The Apache POI project contains the following subcomponents (meaning of acronyms is taken from old documentation): POIFS (Poor Obfuscation Implementation File System [2]) – This component reads and writes Microsoft's OLE 2 Compound document format.
The runtime overhead of added instrumentation is small (5–20%) and the bytecode instrumentor itself is very fast (mostly limited by file I/O speed). Memory overhead is a few hundred bytes per Java class. EMMA is 100% pure Java, has no external library dependencies, and works in any Java 2 JVM (even 1.2.x).
Emulation may be used to defeat polymorphic obfuscation by letting the malware demangle itself in a virtual environment before utilizing other methods, such as traditional signature scanning. Such a virtual environment is sometimes called a sandbox. Polymorphism does not protect the virus against such emulation if the decrypted payload remains ...