10 July 2018

A Password Hidden Among Other Binary DataThis post will detail the password filter implant project we developed recently. Our password filter is used to exfiltrate Active Directory credentials through DNS. This text will discuss the technicalities of the project as well as my personal experience developing it.

May 15, 2018

This February, we ran a Find Security Bugs scan on over at least one hundred components from the Spring Framework. Here is how these vulnerabilities were found, followed by a thorough review of the proposed fix.

April 26, 2018

Red Onions in WaterThis blog is the outcome of my 4 months of internship at GoSecure. I will describe two internal projects that we have developed to gather all kinds of interesting and valuable data. The first project aimed at gathering data on .onion sites—known as the Darknet—while the second one focused at gathering data on sites like Pastebin, GitHub’s gists and Dumpz.

April 03, 2018

We discovered a new Web attack vector abusing the Edge Side Overview of the potentially affected productsInclude (ESI) features common in caching services and product. We will explain the conditions required for exploitation along with 3 example payloads: Cookie exfiltration, SSRF and bypassing client-side XSS filtering.