diff --git a/b00tl3grsa2/sol.py b/b00tl3grsa2/sol.py new file mode 100755 index 0000000..80cefc3 --- /dev/null +++ b/b00tl3grsa2/sol.py @@ -0,0 +1,21 @@ +#!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)) +