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Cybernetics and programming
Reference:

Obfuscation algorithm

Korobeinikov Anatolii Grigor'evich

Doctor of Technical Science

professor, Pushkov institute of terrestrial magnetism, ionosphere and radio wave propagation of the Russian Academy of Sciences St.-Petersburg Filial

199034, Russia, g. Saint Petersburg, ul. Mendeleevskaya, 1

Korobeynikov_A_G@mail.ru
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Kutuzov Il'ya Mikhailovich

graduate student, Department of Design and Security of Computer Systems, St. Petersburg National Research University of Information Technologies, Mechanics and Optics

197101, Russia, St. Petersburg, Kronverkskiy prospect, d. 49

formalizator@gmail.com
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DOI:

10.7256/2306-4196.2013.3.9356

Review date:

18-05-2013


Publish date:

1-6-2013


Abstract: The paper deals with the algorithm of Chenxi Wang’s, shows are the main disadvantages of this algorithm. The authors suggest the ways of modification to improve it. The algorithm of Chenxi Wang's is one of the most famous. The input data for the algorithm is the usual procedure, written in high level language. The authors describe the three stages of obfuscation of any such procedure. In the classic version of Chenxi Wang's the algorithm has poor stability. The authors suggest ways to improve stability of the algorithm, present modified version of the algorithm and reviews results of its implementation. The authors compare the source code and the resulting code and conclude that it is almost impossible to establish their functional identity and the logic of the program code is very difficult to understand using obfuscated source. Sometimes this can be done using the examples run of the resulting source code. This implies that after eliminating the shortcomings the algorithm is quite effective.


Keywords: obfuscation, technology, source code, algorithm, Chenxi Wang, graph, variable, stability, dynamic analysis, information security
This article written in Russian. You can find full text of article in Russian here .

References
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Christian, C. A Taxonomy of Obfuscating Transformations// Christian Collberg, Clark Thomborson. Douglas Low//Technical Report #148. Department of Computer Science. The University of Auckland. July. 1997.
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Chernov, L. V. Analiz zaputyvayushchikh preobrazovanii programm/L.V. Chernov//Trudy Instituta sistemnogo programmirovaniya RAN. Tom 3, 2002 g. ctr. 7-38.
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Rollcs, R. Unpacking virtualization obfuscators/R. Rollcs.//In Proc. 3rd USENIX Workshop on Offensive Technologies (WOOT'09), August 2009.
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Tikhonov, A. Yu. Metodika izvlecheniya algoritma iz binarnogo koda na osnove dinamicheskogo analiza/ A.Yu.Tikhonov, L.I.Avetisyan, V.A.Iadaryan// Problemy informatsionnoi bezopasnosti. Komp'yuternye sistemy. — 2008. — T. №3. — S. 66-71.
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