Android

android challenge cryptography ios lief obfuscation reverse-engineering write-up
Open-Obfuscator: A free and open-source obfuscator for mobile applications

Open-Obfuscator: A free and open-source obfuscator for mobile applications

This blog post introduces open-obfuscator, a new open-source project to obfuscate mobile applications.

Romain Thomas

Android iOS Reverse Engineering Obfuscation
November 7, 2021
PGSharp: Analysis of a Cheating App for PokemonGO
PGSharp: Analysis of a Cheating App for PokemonGO

Romain Thomas

This blog post is about the internal mechanisms of PGSharp, a cheat engine for PokemonGO.

Android Reverse Engineering
September 27, 2020
r2-pay: whitebox (part 2)
r2-pay: whitebox (part 2)

Romain Thomas

This second blog post explains how to recover the whitebox’s key from the obfuscated library libnative-lib.so

Android Reverse Engineering
September 20, 2020
r2-pay: anti-debug, anti-root & anti-frida (part 1)
r2-pay: anti-debug, anti-root & anti-frida (part 1)

Romain Thomas

This first blog post describes the protections in the challenge r2-pay.

Android Reverse Engineering
November 26, 2019
A Glimpse Into Tencent's Legu Packer
A Glimpse Into Tencent's Legu Packer

Romain Thomas

Analysis of Tencent Legu: a packer for Android applications.

Android Reverse Engineering
June 3, 2019
Android Native Library Analysis with QBDI
Android Native Library Analysis with QBDI

Romain Thomas

This blog post deals with QBDI and how it can be used to reverse an Android JNI library

Android Reverse Engineering
November 20, 2018
Android crackme challenge
Android crackme challenge

Romain Thomas

Android crackme that uses system’s internals

Android Challenge