https://srikavin.me/blog/posts/5d87b40492b65c0964fe369c-nactf-2019-dr-js-group-test-randomizer-2-bbob

Original writeup (https://srikavin.me/blog/posts/5d87b40492b65c0964fe369c-nactf-2019-dr-js-group-test-randomizer-2-bbob).