https://wiki.pessinurmi.com/index.php?action=history&feed=atom&title=Health_check 2026-04-22T11:34:11Z Revision history for this page on the wiki MediaWiki 1.45.3 https://wiki.pessinurmi.com/index.php?title=Health_check&diff=282&oldid=prev 2022-09-30T10:37:01Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 10:37, 30 September 2022</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[File:Task-healt check.PNG|thumb|Task health check]]</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[File:Webpage.PNG|thumb|Website where you can upload files]]</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[File:Healt-check Gobuster.PNG|thumb|Gobuster to figure out where is that php file]]</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[File:Healt-check Flag.PNG|thumb|Netcat and reverse shell]]</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===Description===</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===Description===</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This is a healt care systems web page where you can upload your certificates for verification.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This is a healt care systems web page where you can upload your certificates for verification.</div></td></tr> <!-- diff cache key my_wiki:diff:1.41:old-277:rev-282:php=table --> </table>

Exf https://wiki.pessinurmi.com/index.php?title=Health_check&diff=277&oldid=prev 2022-09-30T10:25:59Z

<p>Created page with &quot;===Description=== This is a healt care systems web page where you can upload your certificates for verification. 100pts ===Question=== Investigate the application, find if there are any vulnerabilities and read the flag from /var/backup/secret.txt ===Solution=== I first tested how the website works and found that you can upload .php files. I then tried using the gobuster application to find the file I had sent and found that it was sent directly to the root folder of the...&quot;</p> <p><b>New page</b></p><div>===Description===<br /> This is a healt care systems web page where you can upload your certificates for verification.<br /> 100pts<br /> ===Question===<br /> Investigate the application, find if there are any vulnerabilities and read the flag from /var/backup/secret.txt<br /> ===Solution===<br /> I first tested how the website works and found that you can upload .php files. I then tried using the gobuster application to find the file I had sent and found that it was sent directly to the root folder of the webpage. <br /> <br /> I sent the php reverse shell via the web page. I started the netcat application on the virtual machine to listen on port 1234 and opened the reverse.php file in the browser.<br /> <br /> I got into the system and ran the command &lt;code&gt;cat /var/backup/secret.txt&lt;/code&gt; which printed the correct flag.<br /> <br /> ===Tools===<br /> * Php revese shell<br /> * netcat<br /> * cat<br /> ===Flag===<br /> &lt;code&gt;ctftech{3593e215-63f2}&lt;/code&gt;<br /> ===Links===<br /> *[[CTF Challenges | Back to CTF Challenges page]]</div>

Exf