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JSFuck can be used to bypass detection of malicious code submitted on websites, e.g. in cross-site scripting (XSS) attacks. [10] Another potential use of JSFuck lies in code obfuscation. An optimized version of JSFuck has been used to encode jQuery, a JavaScript library, into a fully functional version written with just the six characters. [11]
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.
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.
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 1989 International Obfuscated C Code Contest (IOCCC) included an entry by Brian Westley. Westley's computer program can be encoded in ROT13 or reversed and still compiles correctly. Its operation, when executed, is either to perform ROT13 encoding on, or to reverse its input. [5]
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. [3]
To obfuscate their attacks, attackers can use polymorphic shellcode to create unique attack patterns. This technique typically involves encoding the payload in some fashion (e.g., XOR-ing each byte with 0x95), then placing a decoder in front of the payload before sending it. When the target executes the code, it runs the decoder which rewrites ...
Decompilation is the process of transforming executable code into a high-level, human-readable format using a decompiler.This process is commonly used for tasks that involve reverse-engineering the logic behind executable code, such as recovering lost or unavailable source code.