A Method for Analyzing Infineon Mobile Font Library
A technology of Infineon and fonts, applied in the field of electronic forensics, can solve problems that have not yet involved mobile phones, complex internal data structures, etc., and achieve the effect of solving forensics problems
Active Publication Date: 2020-11-03
XLY SALVATIONDATA TECHNOLOGY INC
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Problems solved by technology
[0004] In the existing technology, there are many forensics related to smart phones, but few forensic technologies related to non-smart phones. For example, for non-smart phones equipped with Infineon CPU, the CPU is an early product, and the internal data structure is relatively complicated. , therefore, the forensics of this type of mobile phone has not been involved in the prior art, therefore, there is an urgent need for a method for analyzing the structure of the Infineon mobile phone font library and parsing the text messages, address book and call records therein
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[0070] The present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments.
[0071] The text messages, address book and call records of the mobile phone equipped with Infineon CPU are all stored in its font. The font capacity includes but not limited to 4M, 8M, 16M and 32M bytes. The font capacity in this embodiment is 4M bytes.
[0072] Such as figure 1 Shown, a kind of method of parsing Infineon mobile phone character stock, comprises the following steps:
[0073] S1: look up the management field identification in the word library: as figure 2 As shown, the management field identifier in this embodiment is 0x30FCFFFF.
[0074] S2: judge whether the management field identified by the management field identifier is a total management field, if yes, execute step S3, otherwise execute step S1;
[0075] In this embodiment, take the first address of the management field identification 0x30FCFFFF as the starting position, jump b...
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The invention discloses a method for analyzing the word stock in an Infineon mobile phone. The method is characterized by including the following steps that 1, a management field identifier in the word stock is searched for; 2, whether a management field identified by the management field identifier is a master management field or not is judged, if yes, the step 3 is executed, and if not, the step 1 is executed; 3, whether the master management field is a master management field of effective data or not is judged, if yes, the step 4 is executed, and if not, the step 1 is executed; 4, addressing is conducted according to an address indicator in the master management field of the effective data to acquire mobile phone data; 5, the mobile phone data is analyzed, and analysis results are merged; 6, whether analysis of the master management field of the effective data is completed or not is judged, if yes, the step 7 is executed, and if not, the step 4 is executed; 7, whether analysis of the word stock is completed or not is judged, if yes, the process is ended, and if not, the step 1 is executed. The method solves the technical problems that in the prior art, short messages, the contact list and call records of the Infineon mobile phone can not be analyzed, and evidence can not be obtained from the Infineon mobile phone.
Description
technical field [0001] The invention belongs to the field of electronic evidence collection and relates to mobile phone evidence collection, in particular to a method for analyzing Infineon mobile phone fonts. Background technique [0002] With the continuous improvement and expansion of the service level and service types provided by mobile communication technology, mobile phones have increasingly become an indispensable contact tool in people's work and life. However, it is not uncommon to use mobile phones to commit crimes such as fraud, defamation and forgery. Mobile phone data recovery and mobile phone forensics are an effective means to combat such crimes. [0003] Conceptually speaking, mobile phone forensics is to collect, preserve and analyze relevant electronic evidence from mobile phone SIM cards, mobile phone internal and external memory cards, and mobile network operator databases, and finally obtain legally effective evidence that can be accepted by the court. ...
Claims
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IPC IPC(8): G06F12/02
CPCG06F12/023G06F2212/171
Inventor 梁效宁黄旭董超李航
Owner XLY SALVATIONDATA TECHNOLOGY INC