Amphithéâtre 4, EPITA, 24 rue Pasteur, 94276 Le Kremlin-Bicêtre.
Transports en commun : métro 7 (station Porte d'Italie), bus 47/125/131/185/186 (station Roger Salengro-Fontainebleau).
Deep learning techniques offer a lot of appealing results on a wide variety of data, my goal is to apply these techniques to binary executables. I'll explore auto-encoders and deep-networks in order to encode machine code extracted from binary files and construct learnt graphs for clustering and classification. To illustrate my experiments, I'll show you some results with source files' remapping, program classification and malware classification. Slides Youtube
Medusa was designed to be a modular and interactive disassembler. Actually, It's a little bit more, It's a tool for pragmatic binary analysis. We'll see why some reverse engineers turned coffee into Emulation and Symbolic Execution engine for fun and profits. Slides Youtube
Unlike on Windows where we have a reasonable number of variations, memory analysis on Linux can prove to be difficult. In fact, there is a significant amount of different distibutions and versions of Linux, which makes them quite difficult to be analysed in a unified way. Using Volatility, one should provide profiles corresponding to the dumps' kernel versions and distributions. We'll see how to try to simplify the analysis by automating the profile generation. Slides
Presentation of some exploitation techniques used for privilege escalation and code execution on the Windows kernel through vulnerable drivers. We will see several mitigations implemented by Microsoft. Slides Youtube
After an overview of the design flow for CPLDs and the internals of the MAX-V, we will see how one can profit from the non-determinism of the place-and-route algorithm in order to isolate the bits relevant to each logic cell of the CPLD.
The goal of this process is to be able to retrieve the underlying RTL netlist of a bitstream by analyzing it. Slides Youtube
While you sleep, strace is getting a brand new feature thanks to the GSoC. Strace fault injection will soon let you discard its target's syscalls based on your craziest desires. After a quick implementation review, you will meet your new best companion through this fuzzy quest. Slides Youtube
Since last Android release, Internet permission level changed from “dangerous” to “normal” level, letting most of users and developers anxious about the security of their devices. What is really happening inside Android OS when an Internet connection is made ? What does that implies in term of security ? Do we have to be paranoid regarding this matter ? Through this talk, we are going to reveal the truth about Android sockets and their consequences. Slides Youtube
The System Management Mode (SMM) is still an obscure and amazingly powerful mode today. Its features made it really interesting for an attacker: more privileges than the system and invisible from it. This presentation will explain the basics of this mode and go into details about the exploitation of a unchecked pointer vulnerability present in several OEMs. It will also describe the patch and discuss how it should have been done. Slides Youtube
Three Devices for logic analysis of passively captured traces,
Seven for inter-chip communication driven by hardwired interfaces,
Nine for in-circuit debugging limited to specific purpose,
One for complex hardware reverse engineering scenarios
La règle du strict aliasing, présente dans le standard C depuis C89, n'est pas très connue dans le monde des développeurs C. Or, les principaux compilateurs (GCC et Clang) mettent cette règle à profit pour effectuer des optimisations agressives, quite à ce que le code optimisé ne corresponde pas à l'intention du développeur ignorant ces subtilités.
La méconnaissance de la règle et la recherche de performance des compilateurs peut donc causer des problèmes difficile à localiser (cf. le noyau Linux), éventuellement ayant des conséquences sur la sécurité.
Pour détecter les violations de la règle du strict aliasing, une analyse est en cours de mise au point au sein de l'analyseur statique TIS Analyzer, qui formalise la règle de strict aliasing, et vérifie que le programme analysé la respecte. Slides Youtube
OpenBSD has always used the traditional static BSD initialization script: /etc/rc. While dependable, it did not allow for easy integration with monitoring, configuration management software and/or any kind of tools requiring automated service handling. rc.d(8) was developed to abstract service management while pertaining the existing behavior like predictive and sequential start-up ordering (dependency-less).
The way OpenBSD boots hasn't changed much since its inception. This presentation will describe the OpenBSD rc.d(8) framework and rc.subr(8) daemon control routines. While it resembles other implementations, it was written from scratch to match the project objectives (simple, ordered, non-intrusive). I will describe the internals of rc.subr and talk about the implications that it had on the traditional BSD start-up sequence.
I will then introduce rcctl(8): an all-in-one utility for managing rc(8) daemons and services. Slides Youtube
doing manual chroot builds of packages is a nice joke. It requires a lot of skills, and is error-prone.
proot was designed to help simplify that process. As usual, going from a personal idiosyncratic framework to a production ready tool was an interesting experience. It is a balancing act between being as simple as possible (and damn-fool proof) and still rich enough to cater for most situations. Slides Youtube
Slides for some of the rumps:
Life of an instruction in clang/llvm (Francis Visoiu Mistrih)
Let's play with signals (Gabriel Laskar)