Project of question in CTF BIT Mesra Pantheon 2017.
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README.md

EarthDimension404

This project was developed to create an apk which would serve as the basis for a question in a CTF event held by us, the final year students of BIT Mesra 2k14-18 batch to encourage interest in security areas for our juniors.

The aim of this question was to teach about opening android apk and converting .dex file to .java files. Then a little bit of magic of grep, reading code and decrypting an encrypted pdf. Go ahead and solve it yourself.