mirror of
https://github.com/vel21ripn/nDPI.git
synced 2026-05-03 17:30:18 +00:00
5f312c0cd6
* Fix JA4 ALPN fingerprint to use first and last characters According to the JA4 specification (line 2139), the ALPN field should contain the first and last characters of the first ALPN extension value. Currently, nDPI uses the first and second characters (alpn[0] and alpn[1]), which produces incorrect fingerprints that don't match other JA4 implementations like Wireshark. For example, with ALPN 'http/1.1': - Current (incorrect): 'ht' (first + second char) - Fixed (correct): 'h1' (first + last char) This change ensures nDPI's JA4 implementation conforms to the official specification and maintains interoperability with other JA4 tools. Fixes: Incorrect JA4 ALPN fingerprint generation * Fix JA4 ALPN implementation to correctly parse first ALPN protocol The previous fix attempted to use strlen(ja->client.alpn)-1 but this was insufficient because nDPI modifies the ALPN string by: 1. Adding null terminators that truncate the last character 2. Converting semicolons to dashes, affecting multi-protocol ALPNs This complete fix: - Adds alpn_original_last field to store the true last character - Captures the last character of the FIRST ALPN protocol only (before ;/,) - Preserves the original character before nDPI's string modifications Now correctly implements JA4 spec: first + last characters of first ALPN protocol Examples: - ALPN 'h2;http/1.1' -> 'h2' (not 'h.' or 'h1') - ALPN 'http/1.1' -> 'h1' (not 'ht' or 'h.') Fixes: #2914 * Fix JA4 SNI detection to properly handle missing SNI extensions Previously, nDPI incorrectly set JA4 SNI flag to 'd' (domain present) for flows without any SNI extension. This was because the logic only checked for NDPI_NUMERIC_IP_HOST risk (set when SNI contains IP) but didn't distinguish between missing SNI and domain SNI. Now properly detects: - No SNI extension → 'i' flag - SNI with IP address → 'i' flag - SNI with domain → 'd' flag This matches the JA4 specification.
50 lines
7.1 KiB
Text
50 lines
7.1 KiB
Text
DPI Packets (UDP): 863 (95.89 pkts/flow)
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DPI Packets (other): 1 (1.00 pkts/flow)
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Confidence DPI : 10 (flows)
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Num dissector calls: 194 (19.40 diss/flow)
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LRU cache ookla: 0/0/0 (insert/search/found)
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LRU cache bittorrent: 0/0/0 (insert/search/found)
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LRU cache stun: 27/24/0 (insert/search/found)
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LRU cache tls_cert: 0/1/0 (insert/search/found)
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LRU cache mining: 0/0/0 (insert/search/found)
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LRU cache msteams: 0/0/0 (insert/search/found)
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LRU cache fpc_dns: 1/0/0 (insert/search/found)
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Automa host: 4/2 (search/found)
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Automa domain: 4/0 (search/found)
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Automa tls cert: 0/0 (search/found)
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Automa risk mask: 0/0 (search/found)
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Automa common alpns: 0/0 (search/found)
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Patricia risk mask: 0/0 (search/found)
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Patricia risk mask IPv6: 0/0 (search/found)
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Patricia risk: 0/0 (search/found)
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Patricia risk IPv6: 1/0 (search/found)
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Patricia protocols: 11/7 (search/found)
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Patricia protocols IPv6: 2/0 (search/found)
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DNS 2 208 1
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MDNS 2 194 2
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ICMP 5 812 1
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Telegram 6 564 1
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TelegramVoip 853 161775 5
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Acceptable 868 163553 10
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Chat 6 564 1
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VoIP 853 161775 5
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Network 9 1214 4
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JA Host Stats:
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IP Address # JA4C
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1 192.168.12.67 1
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1 UDP 192.168.12.67:42567 <-> 91.108.9.34:1400 [proto: 30.355/DTLS.TelegramVoip][IP: 185/Telegram][Stream Content: Audio][Encrypted][Confidence: DPI][FPC: 78/STUN, Confidence: DPI][DPI packets: 742][DPI packets before monitoring: 43][cat: VoIP/10][401 pkts/72973 bytes <-> 341 pkts/67660 bytes][Goodput ratio: 77/79][14.03 sec][Hostname/SNI: telegram.org][bytes ratio: 0.038 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 0/0 32/37 364/362 30/30][Pkt Len c2s/s2c min/avg/max/stddev: 70/84 182/198 329/330 82/86][Mapped IP/Port: 93.35.170.144:39263, 91.108.9.34:51052, 91.108.9.34:47026][Peer IP/Port: 91.108.9.34:47026][Relayed IP/Port: 91.108.9.34:51052][RTP packets: 247/214][PLAIN TEXT (Unauthorized)][Plen Bins: 0,28,6,5,5,1,6,21,26,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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2 UDP 192.168.12.67:41011 <-> 91.108.9.68:596 [proto: 30.355/DTLS.TelegramVoip][IP: 185/Telegram][Stream Content: Audio][Encrypted][Confidence: DPI][FPC: 185/Telegram, Confidence: DPI][DPI packets: 72][DPI packets before monitoring: 43][cat: VoIP/10][12 pkts/2100 bytes <-> 60 pkts/14416 bytes][Goodput ratio: 76/83][10.53 sec][bytes ratio: -0.746 (Download)][IAT c2s/s2c min/avg/max/stddev: 0/0 55/27 245/216 71/45][Pkt Len c2s/s2c min/avg/max/stddev: 82/106 175/240 614/682 138/121][Mapped IP/Port: 91.108.9.68:596][RTP packets: 0/34][DTLSv1.2][JA4: dd2i110700_c45550529adf_d9dd6182da81][JA3S: 6431b01c80e20aa21a6d7a54b248a3bf][Issuer: CN=WebRTC][Subject: CN=WebRTC][Certificate SHA-1: 4B:2E:58:BF:EC:DB:36:D0:D1:46:24:49:66:83:AC:04:2B:AE:8D:E3][Validity: 2024-11-17 16:02:08 - 2024-12-18 16:02:08][Cipher: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256][PLAIN TEXT (kWpcVUz)][Plen Bins: 0,4,28,20,2,1,1,2,35,2,0,0,0,0,0,0,0,1,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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3 UDP 192.168.12.67:46013 <-> 91.108.13.52:1400 [proto: 78.355/STUN.TelegramVoip][IP: 185/Telegram][ClearText][Confidence: DPI][FPC: 78/STUN, Confidence: DPI][DPI packets: 16][cat: VoIP/10][10 pkts/1084 bytes <-> 6 pkts/804 bytes][Goodput ratio: 61/69][12.44 sec][Hostname/SNI: telegram.org][bytes ratio: 0.148 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 248/0 1188/0 4001/0 1191/0][Pkt Len c2s/s2c min/avg/max/stddev: 70/134 108/134 166/134 47/0][PLAIN TEXT (v/cApISKdp)][Plen Bins: 37,0,37,25,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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4 UDP 192.168.12.67:44405 <-> 91.108.17.41:1400 [proto: 78.355/STUN.TelegramVoip][IP: 185/Telegram][ClearText][Confidence: DPI][FPC: 78/STUN, Confidence: DPI][DPI packets: 15][cat: VoIP/10][11 pkts/1346 bytes <-> 4 pkts/536 bytes][Goodput ratio: 66/69][12.70 sec][Hostname/SNI: telegram.org][bytes ratio: 0.430 (Upload)][IAT c2s/s2c min/avg/max/stddev: 251/0 1355/0 4002/0 1120/0][Pkt Len c2s/s2c min/avg/max/stddev: 70/134 122/134 166/134 48/0][PLAIN TEXT (BIWk/i)][Plen Bins: 33,0,26,40,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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5 UDP 192.168.12.67:39027 <-> 91.108.13.51:597 [proto: 78.355/STUN.TelegramVoip][IP: 185/Telegram][ClearText][Confidence: DPI][FPC: 185/Telegram, Confidence: DPI][DPI packets: 8][cat: VoIP/10][4 pkts/376 bytes <-> 4 pkts/480 bytes][Goodput ratio: 55/65][10.63 sec][bytes ratio: -0.121 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 36/88 3502/3502 9969/10006 4577/4601][Pkt Len c2s/s2c min/avg/max/stddev: 82/106 94/120 130/162 21/24][Mapped IP/Port: 91.108.13.51:597][PLAIN TEXT (BDlMWdxrdJP)][Plen Bins: 0,37,50,12,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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6 ICMP 192.168.12.67:0 -> 91.108.9.34:0 [proto: 81/ICMP][IP: 185/Telegram][ClearText][Confidence: DPI][FPC: 81/ICMP, Confidence: DPI][DPI packets: 1][cat: Network/14][5 pkts/812 bytes -> 0 pkts/0 bytes][Goodput ratio: 74/0][0.07 sec][Risk: ** Susp Entropy **** Unidirectional Traffic **][Risk Score: 20][Risk Info: No server to client traffic / Entropy: 6.979 (Compressed Executable?)][PLAIN TEXT (XYRpDQCom)][Plen Bins: 0,0,20,60,0,0,0,20,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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7 UDP 192.168.12.67:46868 <-> 91.108.17.7:597 [proto: 185/Telegram][IP: 185/Telegram][Encrypted][Confidence: DPI][FPC: 185/Telegram, Confidence: DPI][DPI packets: 6][cat: Chat/9][3 pkts/246 bytes <-> 3 pkts/318 bytes][Goodput ratio: 49/60][10.65 sec][bytes ratio: -0.128 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 500/500 5253/5253 10006/10006 4753/4753][Pkt Len c2s/s2c min/avg/max/stddev: 82/106 82/106 82/106 0/0][Plen Bins: 0,50,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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8 UDP 192.168.12.67:44574 <-> 192.168.12.1:53 [proto: 5/DNS][IP: 0/Unknown][ClearText][Confidence: DPI][FPC: 5/DNS, Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/96 bytes <-> 1 pkts/112 bytes][Goodput ratio: 56/62][0.00 sec][Hostname/SNI: crashlyticsreports-pa.googleapis.com][0.0.0.0][DNS Id: 0x80d1][PLAIN TEXT (crashlyticsreports)][Plen Bins: 0,50,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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9 UDP [fe80::76da:38ff:feed:5332]:5353 -> [ff02::fb]:5353 [proto: 8/MDNS][IP: 0/Unknown][ClearText][Confidence: DPI][FPC: 8/MDNS, Confidence: DPI][DPI packets: 1][cat: Network/14][1 pkts/107 bytes -> 0 pkts/0 bytes][Goodput ratio: 42/0][< 1 sec][Hostname/SNI: _ipps._tcp.local][_ipps._tcp.local][Plen Bins: 0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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10 UDP 192.168.12.1:5353 -> 224.0.0.251:5353 [proto: 8/MDNS][IP: 0/Unknown][ClearText][Confidence: DPI][FPC: 8/MDNS, Confidence: DPI][DPI packets: 1][cat: Network/14][1 pkts/87 bytes -> 0 pkts/0 bytes][Goodput ratio: 51/0][< 1 sec][Hostname/SNI: _ipps._tcp.local][_ipps._tcp.local][Plen Bins: 0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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