Reverse Engineering
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06-10-2010, 11:23 AM




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Introduction

Reverse engineering is a process where an engineered artifact (such as a car, a jet engine, or a software program) is deconstructed in a way that reveals its innermost details, such as its design and architecture. This is similar to scientific research that studies natural phenomena, with the difference that no one commonly refers to scientific research as reverse engineering, simply because no one knows for sure whether or not nature was ever engineered.

In the software world reverse engineering boils down to taking an existing program for which source-code or proper documentation is not available and attempting to recover details regarding its’ design and implementation. Binary reverse engineering techniques aim at extracting valuable information from programs for which source code in unavailable. In some cases it is possible to recover the actual source-code (or a similar high-level representation) from the program binaries, which greatly simplifies the task because reading code presented in a high-level language is far easier than reading low-level assembly language code. In other cases we end up with a fairly cryptic assembly language listing that describes the program. This book explains this process and why things work this way, while describing in detail how to decipher the program’s code in a variety of different environments.


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07-02-2012, 10:42 AM

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#3
18-04-2012, 11:15 AM

Reverse Engineering



.pdf   Rose.pdf (Size: 64.76 KB / Downloads: 61)
Introduction

As a part of the TUT Software Systems Laboratory’s project and implimentation Smart/Kahvinheitin I studied
the Rational Rose’s reverse engineering capabilities. This paper is a brief report of that
study.

2. What is Rational Rose

Rational Rose is a commercial case-tool software. It supports two essential elements of
modern software engineering: component based development and controlled iterative
development. Models created with Rose can be visualized with several UML diagrams.
Rose also supports Round-Trip engineering with several languages. Here we discuss the
code generation and reverse engineering of the C++-language.

3. Why and where was Rational Rose used

The usage of Rational Rose was due to a subgoal of the project and implimentation Smart. The goal was to
become familiar with several products of Rational Software Corporation. The retrieved
knowledge was also used to hold a presentation on this seminar and presentation about reverse engineering.
Rational Rose was used as a case-tool in the project and implimentation Kahvinheitin where the idea was to
create a software for a microprocessor based coffee maker. Project Kahvinheitin can be
considered as a subproject and implimentation of the project and implimentation Smart. In the project and implimentation Rose was used visually to
create class-, state- and packet diagrams. Rose’s Round-trip engineering capabilities were
also examined.

4. How was the tool used.

The tool was used to create the packet hierarchy, structure and dependencies of classes’,
state diagram and an example of the control flow (sequence diagram) of the coffee maker
software.
C++-code was generated from the created model using the Rose’s C++ code generator. This
created code was then altered (due to changes to requirements) and reverse engineered to a
new model or to an update of the existing model.
81940 A Seminar on Reverse Engineering 19.11.2000 - Toni Uimonen

5. About the round-trip engineering

The code was generated from the Rose’s class diagram. The generation process was quite
easy: one needs to select the desired classes, choose destination directory for files and start
the code generation. Several properties can be modified to control the code generation. The
generated code seemed to be a bit obfuscating – Rose generates it’s own comment lines with
special tags. These comment lines which help Rose as it reverse engineers these files can
look a bit cryptical.
Reverse engineering with Rose requires the usage of a special tool, C++ Analyzer. This tool
is a part of Rose’s reverse engineering – though it is a separate tool from Rose. With the
C++ Analyzer the C++ source files were analysed and reverse engineered. Analyzing was
quite simple too. First the files to be analysed were selected. Then the actual analysing was
done. After that the user can select if he/she wants to create a normal Rose model (reverse
engineering) or an update to an existing model (round-trip engineering). The retrieved
output was then ready to be observed in Rose. Also the C++ Analyzer has several properties
which can be used to modification of the created models.
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#4
14-09-2012, 10:06 AM

good adtpdtmpwjgjgjjgggpjpptjptptgjtggjppppttpjpn.mpttjgpmgwppppwtpxppwpppwtgkg
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#5
14-09-2012, 10:12 AM

i m unable to download ppt presentation of reverse engineering
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