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Application file unpacking method and device

A technology of applying files and files, which is applied in the computer field to achieve the effect of ensuring integrity, improving the effect of unpacking and the success rate of unpacking

Active Publication Date: 2021-04-02
JIANGSU PAYEGIS INFORMATION SECURITY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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This shows, lacks a kind of method that can solve the above problem well in the prior art

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  • Application file unpacking method and device
  • Application file unpacking method and device
  • Application file unpacking method and device

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Embodiment Construction

[0030] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0031] figure 1 A schematic flow chart showing the unpacking method of an application file according to Embodiment 1 of the present invention, as shown in figure 1 As shown, the method includes the following steps:

[0032] Step S101, monitor the current unpacking method running on the file to be unpacked, and read the process information corresponding to the current unpacking method.

[0033] Wherein, the file to be unpacked ref...

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Abstract

The invention discloses a shelling method and apparatus of an application file. The method comprises the following steps: monitoring a current to-be-shelled method run by a to-be-shelled file, and reading process information corresponding to the current to-be-shelled method; judging whether the process corresponding to the current to-be-shelled method meets the process of a preset shelling condition according to the process information corresponding to the current to-be-shelled method; if yes, converting memory data of the current to-be-shelled method into first structural body information; determining second structural body information of a DEX file corresponding to a to-be-shelled shell according to the first structural body information; performing repair processing on the second structural body information by using the first structural body information, and generating a shelled DEX file of the to-be-shelled shell according to the repaired second structural body information. By meansof the manner, effective shelling of the reinforced application file can be achieved, the integrity of the data of the obtained DEX file after the shelling can be ensured, and the shelling effect andthe shelling success rate are improved.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a method and device for unpacking application files. Background technique [0002] At present, with the maturity of technologies such as decompilation and reverse engineering, APP security problems are becoming more and more serious. Adopting a reinforcement scheme to reinforce and protect the APP can avoid problems such as the APP being cracked or repackaged. For example, the APP's apk (Android Package, Android installation package) file is reinforced. However, some malicious APPs or malicious codes often use reinforcement technology to protect the APP to resist detection such as Trojan horse detection and killing. The shelling process is performed first, and then the method of detecting whether the shelled APP is a malicious application. [0003] In the prior art, an unpacking tool is used to unpack the unpacked file (reinforced application file), such as DexHunter, which d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/51
CPCG06F21/51
Inventor 汪德嘉华保健田凯王明慧
Owner JIANGSU PAYEGIS INFORMATION SECURITY TECH CO LTD
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