Jamal Chahir

Jamal Chahir (aka. xsp!d3r), An Information Security Researcher from Morocco, Coder and Reverse Engineer. Interested in Software and Web Security, has a big passion for Cryptography. And has developed many tools in different programming languages. Blog: http://xspid3r.blogspot.com.

Articles from Jamal Chahir

Anti-disassembly, anti-debugging and anti-VM

September 11, 2019

Malware takes advantage of a disassembler’s basic assumptions. It exploits predictable choices made by debuggers and hides when it suspects it is running on

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Reverse engineering packed malware

August 20, 2019

In this article, you’ll get a better understanding of what a packed executable is and how to analyze and unpack malware. Finally, you’ll get to know the top

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Software Security - Anti-Patching

December 27, 2016

Introduction In this series of articles, we will discuss some of the techniques that will help better protect our software against reverse engineering. This

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Breaking Software Protection – DSA/DSS

January 27, 2015

1. Introduction In this third part of the series, we will see something similar to the second article but a little bit more advanced. This article will cover

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Breaking Software Protection: ElGamal Signature Scheme

January 12, 2015

Introduction In today's article, we will see a more advanced cryptosystem than the previous one: the ElGamal Signature scheme (not to be confused with ElGama

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Breaking Software Protection - RSA

December 19, 2014

Introduction Hopefully you are familiar with Assembly language and have some little knowledge on how to use reverse engineering tools such as Debuggers, Disa

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