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Lefevre Sylvain


Follow my super adventures in an insecure world.


  1. Setup a complex infra

    Required 2 DNS VPS 2 Small VPS 1 Medium VPS 1 Reverse proxy 1 Hypervisor 1 SAN …


  2. GACTF 2020

    Crypto - ezAES …


  3. Frida === free win

    Introduction …


  4. Machine learning relevance considering a web application firewall

    Introduction …


  5. Spipping around

    Introduction This blog post about a bug in SPIP I discovered while doing some code review on open sources PHP CMS. …


  6. Setup an Android pentest environment

    Introduction In this post, I’ll guide you through the process of setting up a phone and proxify its requests to Burp, and maybe have a little bit of fun in the end. The method used in this post bypass some SSL pinning methods (that’s an additional protection used to verify if the SSL certificate is the one intended), but not all of them, unfortunately :( This post requires a minimal knowledge about your OS, Android and Burp. DISCLAIMER: I am in no way responsible of what you do with this knowkedge, nor I am responsible if you break your device trying to setup this. …