Reverse Engineering

WELCOME

SEMINAR ON

REVERSE ENGINEERING

PRESENTED BY: SAMIR KUMAR BOSE DEPERATMENT OF MECHANICAL ENGINEERING ROLL NO: 09103007035 REGISTRATION NO: 091030110327

WHAT IS REVERSE ENGINEERING? A systematic methodology for analyzing the design of an existing device or system, either as an approach to study the design or as a required for re-design.

The process of duplicating an existing component, subassembly, or product, without the aid of drawings, documentation, or computer model is known as reverse engineering.

REASONS FOR REVERSE ENGINEERING :

• The original manufacturer of a product no longer produces a product.

• The original supplier is unable or unwilling to provide additional parts.

• To strengthen the good features of a product based on long-term usage of the product.

• To analyse the good and bad features of competitors product.

• To explore new avenues to improve product performance •

and features. The original CAD model is not sufficient to support modifications or current manufacturing methods.

STAGES INVOLVED IN THE REVERSE ENGINEERING PROCESS : In order to reverse engineer a product or component of a system, engineers and researchers generally follow the following four-stage process:

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Identifying the product or component which will be

reverse engineered.

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Observing or disassembling the information documenting how the original product works.

•

Implementing the technical data generated by reverse engineering in a replica or modified version of the original.

•

Creating a new product (and, perhaps, introducing it into the market).

THE REVERSE ENGINEERING PROCESS :

LEVELS OF ANALYSIS IN REVERSE ENGINEERING :

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System-Wide Analysis

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Subsystem Dissection Analysis

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Individual Component Analysis

SYSTEM-WIDE ANALYSIS :

•Customer Requirements •Engineering Requirements

•Functional Specifications •Prediction of Subsystems and Components

SUBSYSTEM DISSECTION ANALYSIS :

•Define Subsystems •Determine Subsystem Functional Specifications •Determine Subsystem Physical/Mathematical Principles

INDIVIDUAL COMPONENT ANALYSIS :

•Repeat Dissection Steps to Individual Component

•Define Component Material Selection and Fabrication Process

•Suggest Alternative Designs, Systems, Components and Materials

COMPONENTS OF REVERSE ENGINEERING :

• Scanning Hardware (Portable CMM) • CAD Design Software • CAD Integrated Reverse Engineering Software plug-in

REVERSE ENGINEERING TOOLS :

• Hex editors: Win Hex, Tsearch. • DE compilers: REC, DJ.

• Debuggers : IDAPro, OllyDbg, Win32Dasm. • Code obfuscators: Y0da’s Cryptor, NFO.

APPLICATION OF REVERSE ENGINEERING :

• Automotive industry • In mechanical field • Legacy application support • Military application • Malware analysis • Security / vulnerability research • Software cracking • Software development

ADVANTAGES OF REVERSE ENGINEERING :

• Develop a systematic approach to thinking about the engineering design of devices and systems.

• Acquire a data bank of mechanical design solutions.

• It is time consuming.

DISADVANTAGE OF REVERSE ENGINEERING :

• RE can be wrongly used to acquire others technology illegally.

• It is costly.

CONCLUSIONS :

• Reverse Engineering is a new research area among software maintenance.

• RE includes activities of understanding the system and recovery info from system.

• Program understanding is the most important subset of Reverse Engineering.

THANK YOU