Obfuscating computer program code

Patent

Obfuscating computer program code

- 20 Nov 2007

231

TL;DR: In this paper, a computer-implemented method of tamper-protecting computer program code is presented, which includes: obtaining an input representation of the program code; identifying a conditional program statement for causing a data processing system to selectively execute one of at least a first and a second sets of program statements when said computer program is executed by a Data Processing System; replacing the identified conditional program statements with a set of transformed program statements to obtain obfuscated program code.

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Citations

Patent

Code processing method, information processing device, and program

Tamiya Yutaka

- 13 Feb 2014

TL;DR: In this article, a storage unit stores a first code in which a plurality of variables are defined, and a generation unit detects an operand referring to any variable from within the first code, and generates a second code obtained by replacing a variable name of the detected operand with an identifier not used as a variable names of any variable in the second code.

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Chambers Catherine, +3 more

- 13 Feb 2020

TL;DR: In this paper, the authors describe a set of methods and storage media implemented by a computer for enabling tracking of software, which are described as follows: receiving marking input code corresponding to a computer program, identifying locations of the marking input codes that can be modified in ways that preserve functionality of the computer program; choose at least one code transformation with associated intrinsic constants, derive derived constants from the specific intrinsic constants; apply the chosen code transformation, including injecting the derived constants into the marked input code, and saving the results of the above steps on computer readable media as marked code.

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TL;DR: In this paper, a malware detection and visualization system includes one or more processors; and a storage module communicatively coupled to the processors, the storage module comprises logic, upon execution by the one or multiple processors, that accesses a first set of information that comprises (i) information directed to a plurality of observed events, and (ii) information related to relationships that identify an association between different observed events.

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Patent

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Toshio Ogiso, +3 more

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Patent

System and method for obfuscating code using instruction replacement scheme

Pavel Zeman, +1 more

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TL;DR: In this paper, a list of one-byte instructions for a particular processor is created, and bytes in a function to be obfuscated are randomly selected, and these bytes are replaced with one byte instructions from the list.

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