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Emeric Nasi

I am a French Security researcher. I worked as a developer for couple of years and then decided to create the Sevagas information Security blog in 2009 during a 35000 km (9 months) trip all around Australia :-). The goal was to publish tutorials, articles, and tools.

I founded in 2016 SEVAGAS Information Security to offer to my customers the results of my researches and experience in cybersecurity.

My previous assignments were to work as CyberSecurity Expert and Business coordinator and earlier security architect in energy field (SCADA and control systems). I also worked as consultant on subjects like code auditing, payment applications and PCI-DSS environment.

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You can find news about the Sevagas website and myself on my twitter account .
My professional resume is available on my linkedin account.
You can contact me using the form below. If you need to contact me in a more confidential way, you can use this gpg iconGPG key or you can use ProtonMail and send a message to ena.sevagas[ at ]protonmail.com

Note: I am using my public identity on this blog, I and honest with you and expect the same in return. I will generally not answer to emails if I cannot link the senders to a real identity, especially if they concern exploit or malware writing.


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This author wrote:
Hide meterpreter shellcode in executable
Have you ever wanted to put meterpreter in an exe file but were annoyed by antivirus detecting it? Here is a way to bypass AV detection by applying the method described in "Code segment (...)
Article published on 11 March 2014
Code segment encryption
Partial encryption of a binary and self-decryption at runtime. This article is based on the cryptor described in Bill Blundens’ "The Rootkit ARSENAL" book(Ed1).
Article published on 2 March 2014
Rogue WiFi Access point
Very simple article to explain how to setup a man in the middle situation using a rogue WiFi access point.
Article published on 5 November 2013
Hide files using SSDT hooking
ZwQueryDirectoryFile replacement SSDT hook to hide files on Windows system. This code is an evolution of the one written by Bill Blunden in "The Rootkit ARSENAL" book.
Article published on 3 August 2011
Javascript -Java compatible encryption
How to write a Java and JavaScript compatible implementation of Tiny Encryption Algorithm to encrypt some data exchanged between navigator and Java application server.
Article published on 7 April 2011