Remote Computation Writeup

Solved by : thewhiteh4t

#!/usr/bin/env python3

from pwn import *

host = '188.166.152.84'
port = 30603
conn = remote(host, port)
conn.recvuntil(b'>').decode()
conn.send(b'1\n')

for x in range(500):
    ques_line = conn.recv().decode()
    ques = ques_line.split(': ')[1].split(' = ?')[0]
    try:
        ans = round(eval(ques), 2)
        if ans < -1337.00 or ans > 1337.00:
            print('Got Memory Error')
            ans = 'MEM_ERR'
    except SyntaxError:
        print('Got Syntax Error')
        ans = 'SYNTAX_ERR'
    except ZeroDivisionError:
        print('Got Zero Error')
        ans = 'DIV0_ERR'
    ans = str(ans).encode()
    conn.sendline(ans)
    print(f'Answered {x} questions')

print(conn.recvuntil(b'}').decode())