Using a static passkey for Bluetooth Low Energy pairing is insecure. Recent versions of the Bluetooth specification contain an explicit warning about this. However, in practice, we often see static passkeys being used. Moreover, there are no public implementations of proofs-of-concept that can practically show why using a static passkey is an issue. This is why we implemented one.Continue reading
In this post, I will introduce fpicker. Fpicker is a Frida-based coverage-guided, mostly in-process, blackbox fuzzing suite. Its most significant feature is the AFL++ proxy mode which enables blackbox in-process fuzzing with AFL++ on platforms supported by Frida. In practice, this means that fpicker enables fuzzing binary-only targets with AFL++ on potentially any system that is supported by Frida. For example, it allows fuzzing a user-space application on the iOS operating system, such as the Bluetooth daemon bluetoothd – which was part of the original motivation to implement fpicker.
Continue reading “fpicker: Fuzzing with Frida”
Last week I attended ACM WiSec. Of course, only virtually. The first virtual conference I attended. Coincidentally, it was also the first conference I presented at. While the experience was quite different from a “real” conference, the organizers did a great job to make the experience as good as possible with, for example, a mattermost instance to interact with other conference participants.
In the following, I will list a few talks and papers that I either found very interesting or that generally stood out to me:Continue reading
On September 14th the final deadline of complying with the new Payment Service Directive PSD2 will be reached. Among other things, this directive will bring quite a few technical challenges for credit institutions. These include new requirements on two-factor authentication and API access for third parties. In this blog post we will give a short overview of what this means for banks from a security perspective and outline a few of the security-related issues based on what we have been observing during recent assessments of such APIs.Continue reading