打开题目发现这是一道20分值的web题目
提示：Can you encrypt fast enough?（你加密的够快吗）
进入网页
使用md5加密网站进行加密
他居然说我太慢了
连续试了几次，发现必须得拿出我的pycharm写代码了
思路：得到源码->正则匹配加密字符串->MD5加密->post发送。
#!/usr/bin/python3
# -*- coding:utf-8 -*-
"""
@author: maple
@file: md5.py
@time: 2021/1/22 12:49
@desc:
"""
import requests
import hashlib
import re
url = 'http://178.128.41.22:30979/'
r = requests.session()
html = r.get(url)
text = html.text
output = re.search(r'<h3 align=\'center\'>[a-z|A-Z|0-9]+</h3>', text).group()
output = output.split('>')
output = output[1].split('<')
target = output[0]
final = hashlib.md5(target.encode(encoding='utf-8')).hexdigest()
data = {'hash':final}
posthtml = r.post(url, data=data)
print(posthtml.text)
最后结果
D:\python\venv\Scripts\python.exe D:/python/hackthebox/md5.py
<html>
<head>
<title>emdee five for life</title>
</head>
<body style="background-color:powderblue;">
<h1 align='center'>MD5 encrypt this string</h1><h3 align='center'>bEjMenXY3q9Uu84ZIzSG</h3><p align='center'>HTB{N1c3_ScrIpt1nG_B0i!}</p><center><form action="" method="post">
<input type="text" name="hash" placeholder="MD5" align='center'></input>
</br>
<input type="submit" value="Submit"></input>
</form></center>
</body>
</html>
Process finished with exit code 0
flag：HTB{N1c3_ScrIpt1nG_B0i!}