[https://rawsec.ml/en/HackCon-2017-write-ups/#50-rsa-2-crypto](https://rawsec.ml/en/HackCon-2017-write-ups/#50-rsa-2-crypto)

Original writeup (https://rawsec.ml/en/HackCon-2017-write-ups/#50-rsa-2-crypto).