5.9.247.121

d34dc0d3.py

#!/usr/bin/env python
import requests
from bs4 import BeautifulSoup 
from re import findall

url = 'http://5.9.247.121/d34dc0d3'
headers = { 'X-0x0ACE-Key' : 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' }
# key to be taken by previous challenge on 80.233.134.210

def solve(bgn,end):
    # print all prime numbers within bgn and end seperated by comma
    lst = (str(i) for i in range(bgn+1,end) if all(i%j!=0 for j in range(2,int(i**0.5)+1)))
    return ','.join(lst)

with requests.session() as s:
    s.headers.update(headers)
    soup = BeautifulSoup(s.get(url).text,"lxml")
    verify = soup.find('input',attrs={'name':'verification'}).get('value')
    challenge = soup.find('span',attrs={'class':'challenge'}).text
    lim = [int(i) for i in findall('\d+',challenge)]
    payload = { 'verification' : verify, 'solution' : solve(lim[0],lim[1]) }
    print(s.post(url,data=payload).text)