Rating: 5.0

By using `frida`/`xposed` to hook Java methods, to generate correct `crc32` of some `Android` ID for key used in decrypt raw resource data using `AES_decrypt`. The hints for correct string IDs are from md5 hashes in `.data` section.

More in link below.

Original writeup (https://zeroload.github.io/2018/07/23/CTFZone-2018-Quals-android-ololo-country-checker/).