Case of study for in situ memory reading on damaged MultiMedia Card

IF 2 4区 医学 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS
F. Thomas-Brans , A. Fukami , Q. Clement , Th. Heckmann , D. Sauveron
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引用次数: 0

Abstract

As the storage requirements of systems have increased, the evolution of data storage technologies has undergone a major shift. System manufacturers have recently switched from traditional flash technology to MultiMedia Cards (MMC), which are embedded memories with a dedicated controller. This technology allows for faster data transfer, greater reliability, and an increase in the storage capacity of a component as well as its lifespan. By design, the main weakness of these medium lies in the controller. If the controller fails to respond, the memory becomes unusable, which may negatively impact the user and the forensic expert who intends to retrieve essential data. The aim of the paper is to provide an overview of MMC technologies through their data transfer protocols. The main contribution is to share a diagnostic approach for extracting data from a flash chip controlled by a defective controller, based on the insights from a case study analysis. This work involves the study of the hardware conception of the MMC system as well as the reverse engineering and manipulations of the board with special equipment like X-Ray tomography, laser ablation, computer numerical control technology and logic analyzer.

在损坏的多媒体卡上就地读取内存的研究案例
随着系统存储要求的提高,数据存储技术的发展也发生了重大转变。最近,系统制造商已从传统的闪存技术转向带有专用控制器的嵌入式存储器--多媒体卡(MMC)。这种技术可以实现更快的数据传输、更高的可靠性、更大的存储容量以及更长的使用寿命。根据设计,这些介质的主要弱点在于控制器。如果控制器无法响应,存储器就无法使用,这可能会对用户和打算检索重要数据的取证专家造成负面影响。本文旨在通过数据传输协议概述 MMC 技术。本文的主要贡献在于分享一种诊断方法,根据对案例研究的分析结果,从受故障控制器控制的闪存芯片中提取数据。这项工作包括研究 MMC 系统的硬件概念,以及利用 X 射线断层扫描、激光烧蚀、计算机数控技术和逻辑分析仪等特殊设备对电路板进行逆向工程和操作。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
5.90
自引率
15.00%
发文量
87
审稿时长
76 days
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