RandoriSec is going back to DeepSec (Vienna, Austria) this year. Guillaume Lopes will give a talk about abusing the Google Play Billing API and he’ll give a training with Davy Douhine. The Mobile Hacking training, running the 27 and 28 November, is intended for penetration testers, bug bounty researchers or just curious who would like to improve their security testing skills applied to the mobile ecosystem. The objective of the course is to introduce the basic toolset (Adb, Apktool, Jadx, Cycript, Drozer, Frida, Hopper, Needle, etc.
RandoriSec was at Hack In Paris 2019 and it was wonderful! This 9th edition took place at Maison de la Chimie in Paris (of course;)). The event was divided in two parts: June 16th to 18th: 3 days of trainings with 13 different subjects (IoT, ICS, Windows exploitation, Web and mobile hacking, etc.) June 19th to 20th: 2 days of talks with a unique track.
Abstract Those who follow our blog know that we like Geutebruck cameras: we found many trivial RCE on their products since 2016. A few months ago two attendees (Guillaume Gronnier and Romain Luyer from CEIS) of one of our pentest training found new ways to exploit two old RCE we found two years ago ! We dug further and found an additional way and as a bonus a stored XSS has even been found by an attendee.
Again, RandoriSec was at Hack In The Box for the 2019 edition in Amsterdam! It was really great! The first 3 days of the event are dedicated for the trainings. About that, we heard that the training from Nicolas Grégoire (aka @Agarri) was really great and got very good feedback from the attendees. If you want to improve your skills on Burp Suite Pro, you should attend this training.
La semaine dernière j’ai participé à la table ronde de la conférence du CLUSIF “Gestion des incidents de sécurité : résilience et amélioration.” Mon intervention présentait un travail de recherche effectué en 2016-2017, qui peut se résumer par une question: comment éviter que des biais cognitifs ou organisationnels n’impactent la gestion de la sécurité? En général les décisions en sécurité se prennent sur la base d’avis d’experts, de fournisseurs, de benchmarks ou de discussions avec les pairs.
Nous avons écrit un article sur les outils open-source et gratuits pour l’audit d’intrusions d’applications web qui a été publié dans le hors-série n.97 du magazine Linux Magazine sur “Les bonnes pratiques du développement sécurisé” publié l’été dernier. Le magazine vient d’ailleurs d’être réédité. Nous avions opté pour une licence CC dans le but de mettre l’article à disposition de tout le monde dès l’expiration des droits d’auteur. C’est chose faite !
The March 23th, Guillaume Lopes gave a talk at BSides Dublin about how to bypass the payment on Google Play Billing API. Synopsis: In 2017, the estimated global in-app purchase revenue was projected to exceed $37 billion. Just in the Google Play Store, for 2018, more than 200 000 apps are offering in-app purchases. However, the Google Play Billing API is not offering a sufficient level of protection in order to ensure the security of the payment transactions.
Dirk-jan Mollema, a pentester working for Foxit, found a very clever attack allowing any user, owning an Exchange mailbox, to obtain Domain Admin privileges. The attack has been unveiled last week, strangely without a lot of media coverage (but things seem to change, the daily blogpost of the SANS ISC covered the subject yesterday). As there is still no fix (think software patch to install) from Microsoft, the term “0day” is around.
Guillaume Lopes (@Guillaume_Lopes) and Davy Douhine (@ddouhine), senior pentesters, will share many techniques, tips and tricks to deliver to pentesters, bug bounty researchers or just curious a 100% hands-on 2 days mobile training. Goal is to introduce tools (Adb, Apktool, Jadx, Cycript, Frida, Hopper, Needle, etc.) and techniques to help you to work faster and in a more efficient way in the mobile (Android and iOS) ecosystem. This is the exact training that you would have liked to have before wasting your precious time trying and failing while testing.
Client side validation Client side validation is a common weakness found during penetration tests and security audits performed by Randorisec. Because client side is by definition… on the user side, it can be altered by the user and sometimes it can be done quite easily. Netflix Parental Control PIN A few months ago we figured out that the Netflix parental control PIN was very easy to bypass: Hey kids !