**Full write-up:** [https://www.sebven.com/ctf/2021/08/23/corCTF2021-babyrsa.html](https://www.sebven.com/ctf/2021/08/23/corCTF2021-babyrsa.html)

Cryptography – 476 pts (50 solves) – Chall author: willwam845

Somebody leaked a screenshot of a Discord chat with the author’s RSA modulus primes! Well, partially… Turns out we are missing some of the digits, but not enough to stop us from recovering his private exponent and steal his flag. >:)

Original writeup (https://www.sebven.com/ctf/2021/08/23/corCTF2021-babyrsa.html).