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| from flask import Flask, request, render_template_string
import html
app = Flask(__name__)
BLACKLIST = [
'init','globals','builtins','import','os','popen','read','request','application','TemplateReference',
'cycler','joiner','namespace','lipsum','getitem','config','for','eval','flashed','range','class','mro',
'subclasses','pyfile','shell','stdout','base','if','module','RUNCMD','format','args','values','form',
'cookies','headers','pragma','mimetype','origin','referrer','pop','attr','chr','free','palestine','with'
]
BLACKLIST += ['0','1','2','3','4','5','6','7','8','9']
BLACKLIST += ["'",'"',"`",'\\','/','.','_','[',']','{{','}}','#']
@app.route("/", methods=["GET", "POST"])
def home():
c = request.form.get('c') if request.method == 'POST' else None
error_message = None
rendered_template = None
if c:
c = c.lower()
for item in BLACKLIST:
if item in c:
error_message = "Invalid input detected!"
break
else:
rendered_template = html.unescape(render_template_string(c))
if "fr3e_p4le$t1ne&!" in rendered_template:
try:
with open('flag.txt', 'r') as flag_file:
flag = flag_file.read()
return f"Flag: {flag}"
except FileNotFoundError:
return "Flag file not found!"
return '''
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Jinja-Master</title>
<style>
@import url('https://fonts.googleapis.com/css2?family=VT323&display=swap');
body {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
background-image: url('/static/image.jpg');
background-size: cover;
background-position: center;
font-family: 'VT323', monospace;
color: #33FF33;
}
.form-container {
background-color: rgba(0, 0, 0, 0.7);
padding: 20px;
border-radius: 10px;
box-shadow: 0px 0px 15px 5px rgba(0, 255, 0, 0.5);
max-width: 400px;
width: 100%;
}
.form-container input[type="text"] {
width: 100%;
padding: 10px;
margin: 10px 0;
border: 2px solid #33FF33;
border-radius: 5px;
background-color: #000;
color: #33FF33;
font-size: 18px;
box-sizing: border-box;
}
.form-container input[type="submit"] {
width: 100%;
padding: 10px;
background-color: #33FF33;
border: none;
border-radius: 5px;
color: #000;
font-size: 18px;
cursor: pointer;
transition: background-color 0.3s ease;
box-sizing: border-box;
}
.form-container input[type="submit"]:hover {
background-color: #00FF00;
}
.result, .error {
margin-top: 20px;
padding: 10px;
border: 2px solid #33FF33;
border-radius: 5px;
background-color: #000;
color: #33FF33;
font-size: 18px;
text-align: center;
}
</style>
</head>
<body>
<div class="form-container">
<form method="post">
Enter template string: <input type="text" name="c">
<input type="submit" value="Submit">
</form>
<div class="result">{{ rendered_template }}{{ error_message }}</div>
</div>
</body>
</html>
'''.replace("{{ error_message }}", error_message or "").replace("{{ rendered_template }}", rendered_template or "")
|
