Code Obfuscation

The Process of reverse engineering allows attackers to understand the behavior of software and extract the
proprietary algorithms and key data structures (e.g. cryptographic keys) from it. Code obfuscation is the technique is
employed to protect the software from the risk of reverse engineering i.e. to protect software against analysis and unwanted
modification. Program obfuscation makes code harder to analyze. In this paper we survey the literature on code obfuscation.
we have analyze the different obfuscation techniques in relation to protection of intellectual property. At the last, we are purposing suggestion to provide protection from both the static and dynamic attacks.

Reverse Engineering is the process of revealing hidden code from class file. It converts garbage to readable English text. The main purpose of Reverse Engineering is to uncover the hidden code when the documentation is poor, missing source file, and developer is no longer available to provide the original code source file. Hacker uses Reverse Engineering to attack the class file to uncover the code. Then, the code can be reused for other purposes without taking any permission from the original author. The class file contains all the information and business rules that will be revealed once Reverse Engineering process attacks. Anti-Reverse Engineering techniques are developed to stop, delay, and prevent Reverse Engineering; one of the most common techniques is Obfuscation. It has many forms of protection such as, changing the names of classes and variables names, hide classes, and change form of code. In this paper, an appraisal will be conducted to study the current Obfuscation tech...

While many obfuscation schemes proposed, none of them satisfy any strong definition of obfuscation. Furthermore secure general-purpose obfuscation algorithms have been proven to be impossible. Nevertheless, obfuscation schemes which in practice slow down malicious reverse-engineering by obstructing code comprehension for even short periods of time are considered a useful protection against malicious reverse engineering. In previous works, the difficulty of reverse engineering has been mainly estimated by means ...

Reverse Engineering is the process of revealing hidden code from class file. It converts garbage to readable English text. The main purpose of Reverse Engineering is to uncover the hidden code when the documentation is poor, missing source file, and developer is no longer available to provide the original code source file. Hacker uses Reverse Engineering to attack the class file to uncover the code. Then, the code can be reused for other purposes without taking any permission from the original author. The class file contains all the information and business rules that will be revealed once Reverse Engineering process attacks. Anti-Reverse Engineering techniques are developed to stop, delay, and prevent Reverse Engineering; one of the most common techniques is Obfuscation. It has many forms of protection such as, changing the names of classes and variables names, hide classes, and change form of code. In this paper, an appraisal will be conducted to study the current Obfuscation techniques. This research proposes a new hybrid technique that is based on obfuscation; the technique will be using mathematics, Unicode, and unknown language to convert the source file to a garbage running file that does same task which normal source file does for java applications.

Abstract-Mobile agents have the ability to relocate computation and then carry communication with their peers locally. The design and implementation of mechanism to relocate computations requires a careful assessment of security issues. If these issues are not addressed ...

Reverse Engineering is the process of revealing hidden code from class file. It converts garbage to readable English text. The main purpose of Reverse Engineering is to uncover the hidden code when the documentation is poor, missing source file, and developer is no longer available to provide the original code source file. Hacker uses Reverse Engineering to attack the class file to uncover the code. Then, the code can be reused for other purposes without taking any permission from the original author. The class file contains all the information and business rules that will be revealed once Reverse Engineering process attacks. Anti-Reverse Engineering techniques are developed to stop, delay, and prevent Reverse Engineering; one of the most common techniques is Obfuscation. It has many forms of protection such as, changing the names of classes and variables names, hide classes, and change form of code. In this paper, an appraisal will be conducted to study the current Obfuscation tech...

Software reverse engineering is an active threat against software programs. One of the popular techniques used to make software reverse engineering harder is obfuscation. Among various control flow obfuscations methods proposed in the last decade there is a lack of inter-functional control flow obfuscation techniques. In this paper we propose an inter-functional control flow obfuscation by manipulating return instructions. In our proposed method each function is split into different units, with each unit ending with a return instruction. The linear order in which functions appear in the program is obscured by shuffling these units there by creating an inter-functional control flow obfuscation. Experimental results show that the algorithm performs well against automated reverse engineering attacks.

Source code obfuscation is a protection mechanism widely used to limit the possibility of malicious reverse en gi- neering or attack activities on a software system. Although several code obfuscation techniques and tools are availabl e, little knowledge is available about the capability of obfus - cation to reduce attackers' efficiency, and the contexts in which such an efficiency may

It has become more and more common to distribute software in forms that retain most or all of the information present in the original source code. An important example is Java bytecode. Since such codes are easy to decompile, they increase the risk of malicious reverse engineering attacks. In this paper we review several techniques for technical protection of software