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challenges-category-Web+Exploitation.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<title>
Challenges : IrisCTF 2023 - CTF fun for hackers of all skill levels
</title>
<meta content="A fun, lighthearted, and educational 48-hour online CTF aimed towards hackers of all levels. Takes place the first full Friday-to-Sunday weekend every year." name="description"/>
<meta content="" name="author"/>
<meta content="/static/img/favicon.png" property="og:image">
<link href="/static/img/favicon.png" rel="icon" type="image/png"/>
<link href="/static/theme.css-v-1.3.0r5.css" rel="stylesheet"/>
<script src="/static/theme_min.js">
</script>
</meta>
</head>
<body>
<div id="navbar">
<a href="/">
<img id="navbar-logo" src="/static/img/logo_navbar.png"/>
</a>
<div id="navbar-buttons">
<a href="/home.html">
Home
</a>
<a class="active" href="/challenges.html">
Challenges
</a>
<a href="/scoreboard.html">
Scoreboard
</a>
<a href="/profile.html">
</a>
<form action="/api" method="post">
</form>
</div>
</div>
<div id="body-content">
<div class="pre-category-name">
Challenge category:
</div>
<div class="category-name typewriter">
Web Exploitation
</div>
<div style="display:flex; flex-wrap:wrap">
<div class="decorator-square-container" style="transform: rotate(270deg)">
<div class="decorator-square-component" style="background-color:#009927">
</div>
<div class="decorator-square-component title-decorator-gray">
</div>
<div class="decorator-square-component decorator-square-icon" style="background-image: url('/static/img/icons/arrow.png');background-size: 16px;filter:invert(1);">
</div>
</div>
<a class="btn-solid btn-solid-warning" href="challenges-category-Binary+Exploitation.html" style="margin:0px 8px 8px 0px">
Binary Exploitation
</a>
<a class="btn-solid btn-solid-warning" href="challenges-category-Cryptography.html" style="margin:0px 8px 8px 0px">
Cryptography
</a>
<a class="btn-solid btn-solid-warning" href="challenges-category-Forensics.html" style="margin:0px 8px 8px 0px">
Forensics
</a>
<a class="btn-solid btn-solid-warning" href="challenges-category-Miscellaneous.html" style="margin:0px 8px 8px 0px">
Miscellaneous
</a>
<a class="btn-solid btn-solid-warning" href="challenges-category-Networks.html" style="margin:0px 8px 8px 0px">
Networks
</a>
<a class="btn-solid btn-solid-warning" href="challenges-category-Radio+Frequency.html" style="margin:0px 8px 8px 0px">
Radio Frequency
</a>
<a class="btn-solid btn-solid-warning" href="challenges-category-Reverse+Engineering.html" style="margin:0px 8px 8px 0px">
Reverse Engineering
</a>
<a class="btn-solid btn-solid-warning active" href="challenges-category-Web+Exploitation.html" style="margin:0px 8px 8px 0px">
Web Exploitation
</a>
<a class="btn-solid btn-solid-warning" href="challenges-category-Welcome.html" style="margin:0px 8px 8px 0px">
Welcome
</a>
</div>
<div style="margin-bottom: 8px">
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-8.html">
babystrechy
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
50 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
More byte mean more secure
</p>
<p>
<br>
</p>
<p>
Although this is a web challenge, the script is ran directly with PHP because it doesn't need to have an HTML website attached. Run the command below to connect!
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<div href="nc stretchy.chal.irisc.tf 10704" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-danger btn-solid-link btn-solid-link-unclickable" style="margin-bottom:0px">
<img src="/static/img/icons/target.png" style="width:20px; height:20px; margin-right:8px">
nc stretchy.chal.irisc.tf 10704
</img>
</div>
</div>
<a href="https://cdn.discordapp.com/attachments/1056103369695047750/1060389728970604634/chal.php" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/package.png" style="width:20px; height:20px; margin-right:8px">
chal.php
</img>
</div>
</a>
</div>
<div>
</div>
<div class="tag tag-inline" style="margin-bottom:0px">
<img src="/static/img/icons/user.png" style="width:20px; height:20px; margin-right:8px"/>
<b style="margin-right:8px">
By:
</b>
sera
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-6.html">
babycsrf
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
359 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
JSONP is a old pattern for getting data into JS, but I heard it's insecure because an attacker can specify code instead of a function name. I solved this problem by not letting you change the name.
</p>
<p>
<br>
</p>
<p>
For this challenge you will need to submit a URL to the admin bot (a program that runs a browser and directs it to visit your URL, simulating a real person clicking your link). I recommend learning how to use
<a href="https://ngrok.com/">
ngrok
</a>
if you don't know how to expose local solutions to the internet - I've also provided a template server using Python and Flask for your solution.
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<a href="https://babycsrf-web.chal.irisc.tf" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-danger btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/link.png" style="width:20px; height:20px; margin-right:8px">
https://babycsrf-web.chal.irisc.tf
</img>
</div>
</a>
<div href="nc babycsrfadminbot.chal.irisc.tf 10705" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-danger btn-solid-link btn-solid-link-unclickable" style="margin-bottom:0px">
<img src="/static/img/icons/target.png" style="width:20px; height:20px; margin-right:8px"/>
nc babycsrfadminbot.chal.irisc.tf 10705
</div>
</div>
<a href="https://cdn.discordapp.com/attachments/1056103369695047750/1060569660828962937/chal.zip" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/package.png" style="width:20px; height:20px; margin-right:8px"/>
chal.zip
</div>
</a>
<a href="https://cdn.discordapp.com/attachments/1056103369695047750/1060567558308241469/solve_template.zip" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/package.png" style="width:20px; height:20px; margin-right:8px"/>
solve_template.zip
</div>
</a>
</div>
<div>
<div class="tag tag-inline">
<img src="/static/img/icons/info.png" style="width:20px; height:20px; margin-right:8px"/>
<b style="margin-right:8px">
Hint!
</b>
<p>
The admin's cookie is set with SameSite=None
</p>
</div>
</div>
<div class="tag tag-inline" style="margin-bottom:0px">
<img src="/static/img/icons/user.png" style="width:20px; height:20px; margin-right:8px"/>
<b style="margin-right:8px">
By:
</b>
sera
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-26.html">
Feeling Tagged
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
497 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
Check out my
<em>
new
</em>
<strong>
note
</strong>
service! It supports all the formatting you'll ever need.
</p>
<p>
Flag is in admin's cookies.
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<a href="https://tagged-web.chal.irisc.tf/" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-danger btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/link.png" style="width:20px; height:20px; margin-right:8px">
https://tagged-web.chal.irisc.tf/
</img>
</div>
</a>
<div href="nc taggedadminbot.chal.irisc.tf 10701" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-danger btn-solid-link btn-solid-link-unclickable" style="margin-bottom:0px">
<img src="/static/img/icons/target.png" style="width:20px; height:20px; margin-right:8px"/>
nc taggedadminbot.chal.irisc.tf 10701
</div>
</div>
<a href="https://cdn.discordapp.com/attachments/1056103369695047750/1059373161134694471/tagged.py" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/package.png" style="width:20px; height:20px; margin-right:8px"/>
tagged.py
</div>
</a>
<a href="https://cdn.discordapp.com/attachments/1056103369695047750/1061105803270037605/Dockerfile" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/package.png" style="width:20px; height:20px; margin-right:8px"/>
Dockerfile
</div>
</a>
</div>
<div>
</div>
<div class="tag tag-inline" style="margin-bottom:0px">
<img src="/static/img/icons/user.png" style="width:20px; height:20px; margin-right:8px"/>
<b style="margin-right:8px">
By:
</b>
sera
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-33.html">
metacalc
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
498 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
I ran into this awesome NodeJS spreadsheet library using some custom sandboxing so I tried it out. I even hardened it a bit more. Nothing could ever go wrong
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<div href="nc metacalc.chal.irisc.tf 10700" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-danger btn-solid-link btn-solid-link-unclickable" style="margin-bottom:0px">
<img src="/static/img/icons/target.png" style="width:20px; height:20px; margin-right:8px">
nc metacalc.chal.irisc.tf 10700
</img>
</div>
</div>
<a href="https://cdn.discordapp.com/attachments/1056103369695047750/1061522088801865778/metacalc.zip" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/package.png" style="width:20px; height:20px; margin-right:8px"/>
metacalc.zip
</div>
</a>
</div>
<div>
</div>
<div class="tag tag-inline" style="margin-bottom:0px">
<img src="/static/img/icons/user.png" style="width:20px; height:20px; margin-right:8px"/>
<b style="margin-right:8px">
By:
</b>
sera
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-25.html">
MyCoolSDK
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
500 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
I've written a program that let's you encrypt and decrypt strings, but it uses a proprietary closed-source SDK through GitHub Actions. Of course you can fork it and only the magical GitHub black box will be able to see it. So there's no way you could dump the entire SDK... right?
</p>
<p>
<br>
</p>
<p>
Note: this challenge uses a non-standard flag format, irisCTF{}.
</p>
<p>
Also after solving, please delete your repository if you fork and make any changes to it so others can't cheat off of your repo.
</p>
<p>
Hint: this is not a rev challenge. No need to break IDA out for this one.
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<a href="https://github.com/IrisSec/MyCoolEncryptor/" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-danger btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/link.png" style="width:20px; height:20px; margin-right:8px">
https://github.com/IrisSec/MyCoolEncryptor/
</img>
</div>
</a>
<a href="https://cdn.discordapp.com/attachments/1056103369695047750/1060389811107668078/index_final.js" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/package.png" style="width:20px; height:20px; margin-right:8px"/>
sdk_server_source.js
</div>
</a>
</div>
<div>
</div>
<div class="tag tag-inline" style="margin-bottom:0px">
<img src="/static/img/icons/user.png" style="width:20px; height:20px; margin-right:8px"/>
<b style="margin-right:8px">
By:
</b>
nope
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-28.html">
mokerview
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
500 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
Classic bug combo pack
</p>
<p>
<br>
</p>
<p>
Admin will visit your URL after logging in.
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<a href="https://mokerview-web.chal.irisc.tf/" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-danger btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/link.png" style="width:20px; height:20px; margin-right:8px">
https://mokerview-web.chal.irisc.tf/
</img>
</div>
</a>
<div href="nc mokerviewadminbot.chal.irisc.tf 10702" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-danger btn-solid-link btn-solid-link-unclickable" style="margin-bottom:0px">
<img src="/static/img/icons/target.png" style="width:20px; height:20px; margin-right:8px"/>
nc mokerviewadminbot.chal.irisc.tf 10702
</div>
</div>
<a href="https://cdn.discordapp.com/attachments/1056103369695047750/1061155333084553266/mokerview.py" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/package.png" style="width:20px; height:20px; margin-right:8px"/>
mokerview.py
</div>
</a>
</div>
<div>
</div>
<div class="tag tag-inline" style="margin-bottom:0px">
<img src="/static/img/icons/user.png" style="width:20px; height:20px; margin-right:8px"/>
<b style="margin-right:8px">
By:
</b>
sera
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-36.html">
sanitizer
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
500 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
What does it truly mean to sanitize something? What is a sanitize? Is this challenge solvable?
</p>
<p>
<br>
</p>
<p>
Admin bot code is provided, running Chromium at least 109.0
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<a href="https://sanitizer-web.chal.irisc.tf/" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-danger btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/link.png" style="width:20px; height:20px; margin-right:8px">
https://sanitizer-web.chal.irisc.tf/
</img>
</div>
</a>
<div href="nc sanitizeradminbot.chal.irisc.tf 10703" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-danger btn-solid-link btn-solid-link-unclickable" style="margin-bottom:0px">
<img src="/static/img/icons/target.png" style="width:20px; height:20px; margin-right:8px"/>
nc sanitizeradminbot.chal.irisc.tf 10703
</div>
</div>
<a href="https://cdn.discordapp.com/attachments/1056103369695047750/1060515175855304725/sanitizer.zip" style="text-decoration:none; margin-right:8px; margin-bottom:8px" target="_blank">
<div class="tag tag-inline btn-solid btn-solid-link" style="margin-bottom:0px">
<img src="/static/img/icons/package.png" style="width:20px; height:20px; margin-right:8px"/>
sanitizer.zip
</div>
</a>
</div>
<div>
</div>
<div class="tag tag-inline" style="margin-bottom:0px">
<img src="/static/img/icons/user.png" style="width:20px; height:20px; margin-right:8px"/>
<b style="margin-right:8px">
By:
</b>
sera
</div>
</div>
</div>
</div>
<div id="footer">
<b>
<a href="https://github.com/Milkdrop/CTFx">
CTFx
</a>
</b>
v1.3.0r5
<br/>
Made with 🧡 by
<a href="https://gitlab.com/Milkdrop">
Milkdrop
</a>
, Based on
<a href="https://github.com/Nakiami/mellivora">
mellivora
</a>
</div>
<audio id="audio-typewriter" src="/static/audio/typewriter.mp3">
</audio>
<audio id="audio-nav-mouseover" src="/static/audio/nav_mouseover.mp3">
</audio>
<audio id="audio-nav-click" src="/static/audio/nav_click.mp3">
</audio>
<audio id="audio-btn-dynamic-mouseover" src="/static/audio/btn_dynamic_mouseover.mp3">
</audio>
<audio id="audio-btn-dynamic-click" src="/static/audio/btn_dynamic_click.mp3">
</audio>
<audio id="audio-btn-solid-mouseover" src="/static/audio/btn_solid_mouseover.mp3">
</audio>
<audio id="audio-btn-solid-click" src="/static/audio/btn_solid_click.mp3">
</audio>
<audio id="audio-checkbox-click" src="/static/audio/checkbox_click.mp3">
</audio>
<script src="/static/ctfx.js-v-1.3.0r5.js" type="text/javascript">
</script>
</body>
</html>