Control flow obfuscation for Android applications

Balachandran, Vivek; Sufatrio,; Tan, Darell J. J.; Thing, Vrizlynn L. L.

doi:10.1016/j.cose.2016.05.003

Cited by 51 publications

(25 citation statements)

References 8 publications

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“…As an extension of the application, Lyceum also provides a mobile application that enables distant learning by accessing the content directly live through personal mobile phones. The mobile application is secured with latest obfuscation techniques [5] so that the contents are secure while transmitted. Even though the functionality is appealing, currently the mobile application is used for broadcasting information to parents.…”

Section: Lyceum Mobile Applicationmentioning

confidence: 99%

Lyceum – Classroom without Walls

Balachandran

Panchapakesan

Balachandran³

2018

Electronic Workshops in Computing

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Education system in India is still following a traditional classroom lecturing system and slowly adopting new pedagogies involving technological infrastructures. However, incorporating technology enabled learning solutions to schools should consider the cultural context of the region and the practices that works best for their system. A major factor hindering quality education in India is the constant rise in the student population and the teaching overload of the educators. In this paper we propose an information technology based solution, Lyceum, which enables teachers to conduct lectures to a larger number of students in different classrooms with two way communication between the teacher and the students just like in a classroom. The first version of the product has been deployed in three schools in India and we are currently collecting feedback for continuous improvement.

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Section: Lyceum Mobile Applicationmentioning

confidence: 99%

Lyceum – Classroom without Walls

Balachandran

Panchapakesan

Balachandran³

2018

Electronic Workshops in Computing

Self Cite

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“…Vivek Bala et al [27] analyzed the need for potent controlflow based obfuscation so as to help protect Android apps. they also have described the design and implementation of three control-flow obfuscations for Android apps at the Dalvik bytecode level, which go beyond simp control-flow transformations used by exiting Android obfuscators.…”

Section: Related Workmentioning

confidence: 99%

DexPro: A Bytecode Level Code Protection System for Android Applications

Tang

Song

et al. 2017

Cyberspace Safety and Security

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Unauthorized code modification through reverse engineering is a major concern for Android application developers. Code reverse engineering is often used by adversaries to remove the copyright protection or advertisements from the app, or to inject malicious code into the program. By making the program difficult to analyze, code obfuscation is a potential solution to the problem. However, there is currently little work on applying code obfuscation to compiled Android bytecode. This paper presents DEXPRO, a novel bytecode level code obfuscation system for Android applications. Unlike prior approaches, our method performs on the Android Dex bytecode and does not require access to high-level program source or modification of the compiler or the VM. Our approach leverages the fact all except floating operands in Dex are stored in a 32-bit register to pack two 32-bit operands into a 64-bit operand. In this way, any attempt to decompile the bytecode will result in incorrect information. Meanwhile, our approach obfuscates the program control flow by inserting opaque predicates before the return instruction of a function call, which makes it harder for the attacker to trace calls to protected functions. Experimental results show that our approach can deter sophisticate reverse engineering and code analysis tools, and the overhead of runtime and memory footprint is comparable to existing code obfuscation methods.

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“…e disadvantage of this method is that the malware could identify it using the code decoding. e signal method is an obfuscation method in which control flow graph opcodes (operation codes) are hidden [8][9][10]. e advantage of this method is that it hides the control flow graph of a program and makes the information of the control flow graph of the program difficult [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Obfuscation Using Signals and Encryption

Hashemzade

Maroosi

2018

Journal of Computer Networks and Communications

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Obfuscation of software and data is one of the subcategories of software security. Hence, the outlines of the obfuscation problem and its various methods have been studied in this article. This paper proposes a hybrid of two signals and encryption obfuscation to hide the behaviour program and prevent reconstruction of the normal code by hackers. The usual signal method is strong enough for obfuscation, but its problem is the high complexity because of a lot of call and return instructions. In this study, a new dispatcher was added to the source code to reconstruct the original control flow graph from the hidden one to solve the problem of the signal method. This dispatcher code is encrypted to preclude access by the hacker. In this paper, the potency that makes the obfuscation strong has been increased and the resilience that makes the obfuscation poor has been decreased. The results of a comparison of the similarity among the ambiguous data with its original code and with available efficient methods present a performance advantage of the proposed hybrid obfuscation algorithm.

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Control flow obfuscation for Android applications

Cited by 51 publications

References 8 publications

Lyceum – Classroom without Walls

Lyceum – Classroom without Walls

DexPro: A Bytecode Level Code Protection System for Android Applications

Hybrid Obfuscation Using Signals and Encryption

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