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Reverse Engineering

Is the process of discovering the technological principles of a device, object, or system through analysis of its structure, function, and operation1

1Eilam, Eldad & Chikofsky, Elliot J. (2007). Reversing: secrets of reverse engineering.

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PurposeValuable data

Interfacing

Security analysis

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Android Compiling process

Coding in Java

Compiling to Dalvik

Packaging

Distribution

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(de)distribution Pulling from device

Directly download via googleplay-pythonapi

Download from web

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(de)distribution

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(de)packaging(de)compiling

From dex to .smali or .java

dex2jar

apktool

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Smali

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APK Tool https://code.google.com/p/android-apktool/downloads/list

Jar Signer http://docs.oracle.com/javase/1.3/docs/tooldocs/win32/jarsigner.html

Keytool http://docs.oracle.com/javase/6/docs/technotes/tools/windows/keytool.html

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Crackme http://crackmes.de/users/deurus/android_crackme03/

dex2jar http://code.google.com/p/dex2jar/

JD-GUI http://java.decompiler.free.fr/

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Smali http://pallergabor.uw.hu/androidblog/dalvik_opcodes.html

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Security Tokens

Private addresses

Unauthorized access

Cheating

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Proguard Obfuscating and optimizing tool

http://developer.android.com/tools/help/proguard.html

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Thank you!

+ http://goo.gl/t4AVh

@eenriquelopez

http://www.neo-tech.es

Donnerstag, 4. April 13