Tags: misc
Rating:
## Challenge Description:
I gave the flag to a friend of mine to protect it, she likes riddles and apparently has a bad temper. Go say hi: nc sphinx.razictf.ir 1379
When you connect to the challenge host. You get a base64 encoded image and you need to answer the question with the position of the shape
within a short period of time or the connection would time out.
I used this script to get the images and manually answered the questions.
```py
#!/usr/bin/env python3
import base64
from pwn import *
import os
host = "sphinx.razictf.ir"
port = 1379
io = remote(host,port)
io.recv(1024)
io.sendline('yes')
for i in range(1,21):
encoded = io.recvuntil('? ')
enc_image = encoded.decode().split('\n')[0]
question = encoded.decode().split('\n')[1]
f = open('image1.png','wb')
f.write(base64.b64decode(enc_image))
f.close()
#os.system('eog image1.png &')
print(str(i) + " " +question)
io.sendline(input('> '))
#print(io.recvuntil('? '))
print(io.recv().decode())
```
Here's how the decoded image looked like with the shape position being denoted by a,b,c,d.
Flag:
