#!python3 from pwn import * conn = remote("jupiter.challenges.picoctf.org", 19566) conn.recvuntil(b"c: ") c = int(conn.recvline().strip()) log.info("c: {:x}".format(c)) conn.recvuntil(b"n: ") n = int(conn.recvline().strip()) log.info("n: {:x}".format(n)) conn.recvuntil(b"e: ") e = int(conn.recvline().strip()) log.info("e: {:x}".format(e)) m = pow(c, 65537, n) m_literal = pack(m, 'all', 'big', False) log.success("flag: {}".format(m_literal))