Please take a look of this video of Royal Envoy Game by Playrix!

http://www.youtube.com/watch?v=-5aSe9OdX3U

Please pay attention to the Crown and the Green Bar. There is a nice looking animated shine effect on it!

Anybody have any ideia of how they may have done this effect?

The game textures are all in a .tar file, I extracted it and I did not found any texture file that seems to have been used for this purpose. But I'm sure it's there! And I'm sure that this effect is not pre rendered, it's made on runtime.

Any suggestions?

Thanks!