JACTF web签到

JACTF刷题ing

首先查看源代码，发现3719372767312836781.js可能会有点东西。

<!DOCTYPE html>
<html>
<head>
	<title>签到</title>
	<meta charset="utf-8">
	<script type="text/javascript" src="./3719372767312836781.js"></script>
</head>
<body>
<h1>Not Found</h1>
<p>The requested URL /eighteen8.php was not found on this server.</p>
<p>Additionally, a 404 Not Found
    error was encountered while trying to use an ErrorDocument to handle the request.</p>
<p style="display:none">
呀，小伙子不错啊，还可以找到这里，是个人才。

but，flag不在这里，不过还是在这个页面内，你自己看一看。
</p>
</body>
</html>

点开看看，

1	`String.fromCharCode(102,108,97,103,58,102,108,97,103,95,105,115,95,118,101,114,121,95,101,97,115,121)`

很明显102是“f”的ASCII码，于是用python编写一个脚本，

# coding=utf-8
 
s = [102,108,97,103,58,102,108,97,103,95,105,115,95,118,101,114,121,95,101,97,115,121]
flag = ''
for i in s:
    k = chr(i)
    flag += k
print("web签到的flag是",flag)

得到flag:flag_is_very_easy