I got a little bit surprised when I tried looking for information on reverse engineering android applications. Usually, I go for lectures, talks, and most importantly demonstrations and hands-on videos.
However, my search rendered so few results that I really don't know what to think. There are literally millions of applications in the Play Store, and I could bet my ass that many of them come with security flaws that could lead to potential leak of user sensitive information.
Anyway, the little information that I found and keep finding is good for a start. Since I'm interested in reverse engineering and I've been studying and actively testing it for some time, why not try to go for Android apps? I hate java and android programming, so this might be a good way to somehow go over the feeling and break the ice.
The presentation below is probably the only one available on Youtube for 2018. So, if you're as interested in this as I am, enjoy the watch!
Cristi Vlad Self-Experimenter and Author