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challenges-category-Forensics.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<title>
Challenges : IrisCTF 2024 - 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." 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/ctfx.css-v-1.3.0.css" rel="stylesheet"/>
</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">
Forensics
</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 active" 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-Open-Source+Intelligence.html" style="margin:0px 8px 8px 0px">
Open-Source Intelligence
</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" 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-42.html">
Not Just Media
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
50 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
I downloaded a video from the internet, but I think I got the wrong subtitles.
</p>
<p>
</p>
<p>
Note: The flag is all lowercase.
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<a href="https://cdn.2024.irisc.tf/not-just-media.tar.gz" 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">
not-just-media.tar.gz
</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>
rph
</img>
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-11.html">
skat's SD Card
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
167 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
"Do I love being manager? I love my kids. I love real estate. I love ceramics. I love chocolate. I love computers. I love trains."
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<a href="https://cdn.2024.irisc.tf/skats-sd-card.tar.gz" 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">
skats-sd-card.tar.gz
</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>
skat
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-29.html">
Investigator Alligator
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
428 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
JoSchmoTechCo's server got hit! The folder containing their super duper important company secrets is all locked up. Luckily, the sysadmin was smart enough to be capturing the network traffic and take a memory sample when the whole ordeal went down.
</p>
<p>
</p>
<p>
The victim user, in a flurry of blind panic, also typed something after the damage was already done. We have an image of the disk after the event. Can you recover their files and find out what the victim typed?
</p>
<p>
</p>
<p>
Note: the malware contained is rather innocuous, but it's still a bad idea to run untrusted programs off the Internet. Please don't do that.
</p>
<p>
</p>
<p>
If your download speeds for the attachment are really slow, try our
<a href="https://cdn.2024.irisc.tf/investigator-alligator.gz">
mirror download
</a>
.
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<a href="https://shawndxyz.sjc1.vultrobjects.com/ctf/2024.irisctf/investigator-alligator.gz" 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">
investigator-alligator.gz
</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>
skat
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-47.html">
Corrupted World
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
465 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
I was putting all my important items into a chest when Minecraft crashed. Now when I load my world, the chest is empty. Help me recover it's contents.
</p>
<p>
</p>
<p>
Notes:
</p>
<ul>
<li>
Game version: 1.20.2
</li>
<li>
You don't need to own the game to solve this challenge
</li>
</ul>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<a href="https://cdn.2024.irisc.tf/corrupted-world.tar.gz" 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">
corrupted-world.tar.gz
</img>
</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>
X: 104, Y: 63, Z: 248
</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>
rph
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-33.html">
What the Beep?
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
478 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
A strange beep sound was heard across a part of the San Joaquin Valley. We have the records from some audio volume meters at various locations nearby that picked up this event. It's understood that the original sound was about 140 dB at the source, but can you find out where it originated from?
</p>
<p>
</p>
<p>
When you find out, submit the coordinates to the answer checker service to get the flag.
</p>
<p>
</p>
<p>
Note: you may assume perfect conditions.
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<div href="nc what-the-beep.chal.irisc.tf 10500" 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 what-the-beep.chal.irisc.tf 10500
</img>
</div>
</div>
<a href="https://cdn.2024.irisc.tf/what-the-beep.tar.gz" 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"/>
what-the-beep.tar.gz
</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>
To simplify your math, you may assume the sound intensity is 140dB at 1 ft away from source. You only need to focus on the beep part of the graphs -- the parts left and right of it may be disregarded. Do not overthink!
</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>
skat
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-13.html">
buzzbuzz
</a>
<div class="challenge-points">
<img src="/static/img/icons/flag.png"/>
491 Points
</div>
</div>
<small>
</small>
</div>
<div class="card-content">
<p>
Last week, we detected some suspicious activity on the network from outside actors seemingly targeting our servers. We received a ransom email over the weekend, but IT didn't open it up until Tuesday afternoon and verified the stolen data as authentic. We thought the attackers were bluffing since we ignored the email for days, but lo and behold, our systems were indeed encrypted Wednesday afternoon!
</p>
<p>
</p>
<p>
How did the attackers know when we opened up the email?
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<a href="https://cdn.2024.irisc.tf/buzzbuzz.tar.gz" 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">
buzzbuzz.tar.gz
</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>
skat
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<div style="display:flex">
<a href="challenge-id-12.html">
Lost and Found
</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 found this ID card on the ground near some train tracks. It's a bit dirty, and the card is all scratched up! I took some pictures before and after a light brushing, and I'd like to find the owner. Can you find out who it belongs to?
</p>
<p>
</p>
<p>
Note: this is not an OSINT challenge. The flag format is
<code>
irisctf{firstname_lastname}
</code>
. The flag is not case sensitive.
</p>
<div style="margin-top:8px; display:flex; flex-wrap: wrap">
<a href="https://cdn.2024.irisc.tf/lost-and-found.tar.gz" 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">
lost-and-found.tar.gz
</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>
skat
</div>
</div>
</div>
</div>
<div id="footer">
<b>
Forked from
<a href="https://github.com/Milkdrop/CTFx">
CTFx
</a>
</b>
v1.3.0.
<br/>
CTFx 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-1.3.0.js" type="text/javascript">
</script>
</body>
</html>