mirror of
https://github.com/vel21ripn/nDPI.git
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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.
55 lines
8.2 KiB
Text
55 lines
8.2 KiB
Text
DPI Packets (TCP): 29 (5.80 pkts/flow)
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DPI Packets (UDP): 4 (2.00 pkts/flow)
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DPI Packets (other): 3 (1.00 pkts/flow)
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Confidence DPI : 10 (flows)
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Num dissector calls: 26 (2.60 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: 0/0/0 (insert/search/found)
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LRU cache tls_cert: 0/2/0 (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: 2/3/1 (insert/search/found)
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Automa host: 9/5 (search/found)
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Automa domain: 9/0 (search/found)
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Automa tls cert: 1/0 (search/found)
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Automa risk mask: 1/0 (search/found)
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Automa common alpns: 4/4 (search/found)
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Patricia risk mask: 0/0 (search/found)
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Patricia risk mask IPv6: 2/0 (search/found)
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Patricia risk: 0/0 (search/found)
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Patricia risk IPv6: 10/1 (search/found)
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Patricia protocols: 0/0 (search/found)
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Patricia protocols IPv6: 11/10 (search/found)
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DNS 4 800 2
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HTTP 10 1792 1
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IMAPS 4 516 2
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TLS 28 15397 1
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ICMPV6 48 7862 3
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Facebook 33 13926 1
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Safe 32 15913 3
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Acceptable 62 10454 6
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Fun 33 13926 1
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Email 4 516 2
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Web 38 17189 2
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SocialNetwork 33 13926 1
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Network 52 8662 5
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JA Host Stats:
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IP Address # JA4C
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1 2001:470:1f17:13f:3e97:eff:fe73:4dec 2
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1 TCP [2001:470:1f17:13f:3e97:eff:fe73:4dec]:60205 <-> [2604:a880:1:20::224:b001]:443 [proto: 91/TLS][IP: 442/DigitalOcean][Encrypted][Confidence: DPI][FPC: 442/DigitalOcean, Confidence: IP address][DPI packets: 12][cat: Web/5][14 pkts/2312 bytes <-> 14 pkts/13085 bytes][Goodput ratio: 35/89][0.60 sec][Hostname/SNI: mail.tomasu.net][bytes ratio: -0.700 (Download)][IAT c2s/s2c min/avg/max/stddev: 0/0 53/36 142/142 57/55][Pkt Len c2s/s2c min/avg/max/stddev: 106/106 165/935 629/1847 139/680][Risk: ** TLS (probably) Not Carrying HTTPS **][Risk Score: 10][Risk Info: No ALPN][TCP Fingerprint: 2_64_28400_5c453b01be6e/Unknown][TLSv1.2][JA4: t12d660800_05dad94a8930_ad3c3a211394][ServerNames: mail.tomasu.net,www.mail.tomasu.net][JA3S: 389ed42c02ebecc32e73aa31def07e14][Issuer: C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Domain Validation Secure Server CA][Subject: OU=Domain Control Validated, OU=PositiveSSL, CN=mail.tomasu.net][Certificate SHA-1: 9C:00:A2:31:8F:66:C6:E2:D8:E8:1E:6F:52:49:AD:15:0A:8B:7C:68][Firefox][Validity: 2014-01-29 00:00:00 - 2019-01-28 23:59:59][Cipher: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256][Plen Bins: 7,7,0,7,0,7,0,0,7,0,0,0,0,0,0,0,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,0,0,7,0,0,0,35,0,0,7]
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2 TCP [2001:470:1f17:13f:3e97:eff:fe73:4dec]:53234 <-> [2a03:2880:1010:6f03:face:b00c::2]:443 [proto: 91.119/TLS.Facebook][IP: 119/Facebook][Encrypted][Confidence: DPI][FPC: 119/Facebook, Confidence: DNS][DPI packets: 7][cat: SocialNetwork/6][18 pkts/6894 bytes <-> 15 pkts/7032 bytes][Goodput ratio: 72/77][0.53 sec][Hostname/SNI: www.facebook.com][(Advertised) ALPNs: spdy/3.1;h2-14;h2;http/1.1][bytes ratio: -0.010 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 0/0 20/23 98/97 33/36][Pkt Len c2s/s2c min/avg/max/stddev: 106/106 383/469 1504/1911 467/576][TCP Fingerprint: 2_64_28800_83b2f9a5576c/Unknown][TLSv1.2][JA4: t12d1311s1_94beff773b37_06a4338d0495][ServerNames: *.facebook.com,facebook.com,*.xz.fbcdn.net,messenger.com,fb.com,*.m.facebook.com,*.fbsbx.com,*.xy.fbcdn.net,*.messenger.com,*.fb.com,*.fbcdn.net,*.xx.fbcdn.net,*.facebook.net][JA3S: 6806b8fe92d7d465715d771eb102ff04][Issuer: C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert High Assurance CA-3][Subject: C=US, ST=CA, L=Menlo Park, O=Facebook, Inc., CN=*.facebook.com][Certificate SHA-1: 93:C6:FD:1A:84:90:BB:F1:B2:3B:49:A0:9B:1F:6F:0B:46:7A:31:41][Validity: 2014-08-28 00:00:00 - 2015-12-31 12:00:00][Cipher: TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256][Plen Bins: 5,32,5,0,0,5,5,0,5,0,0,0,0,0,0,0,0,0,0,0,0,5,5,0,0,0,0,0,5,0,0,0,0,0,5,0,0,0,0,0,0,0,0,15,0,0,0,5]
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3 ICMPV6 [2001:470:1f17:13f:3e97:eff:fe73:4dec]:0 <-> [2604:a880:1:20::224:b001]:0 [proto: 102/ICMPV6][IP: 442/DigitalOcean][ClearText][Confidence: DPI][FPC: 102/ICMPV6, Confidence: DPI][DPI packets: 1][cat: Network/14][23 pkts/3174 bytes <-> 23 pkts/3174 bytes][Goodput ratio: 41/41][22.14 sec][bytes ratio: 0.000 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 1000/992 1001/1001 1001/1012 0/4][Pkt Len c2s/s2c min/avg/max/stddev: 138/138 138/138 138/138 0/0][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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4 TCP [2001:470:1f17:13f:3e97:eff:fe73:4dec]:41538 <-> [2604:a880:1:20::224:b001]:80 [proto: 7/HTTP][IP: 442/DigitalOcean][ClearText][Confidence: DPI][FPC: 442/DigitalOcean, Confidence: IP address][DPI packets: 6][cat: Web/5][6 pkts/786 bytes <-> 4 pkts/1006 bytes][Goodput ratio: 18/57][0.82 sec][Hostname/SNI: mail.tomasu.net][bytes ratio: -0.123 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 0/2 164/56 495/110 171/54][Pkt Len c2s/s2c min/avg/max/stddev: 106/106 131/252 248/680 52/247][URL: mail.tomasu.net/][StatusCode: 301][Content-Type: text/html][Server: Apache/2.4.10 (Debian)][User-Agent: Wget/1.16.3 (linux-gnu)][TCP Fingerprint: 2_64_28400_5c453b01be6e/Unknown][PLAIN TEXT (GET / HTTP/1.1)][Plen Bins: 0,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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5 ICMPV6 [2a03:2880:1010:6f03:face:b00c::2]:0 -> [2001:470:1f17:13f:3e97:eff:fe73:4dec]:0 [proto: 102/ICMPV6][IP: 119/Facebook][ClearText][Confidence: DPI][FPC: 102/ICMPV6, Confidence: DPI][DPI packets: 1][cat: Network/14][1 pkts/1314 bytes -> 0 pkts/0 bytes][Goodput ratio: 94/0][< 1 sec][Risk: ** Crawler/Bot **** Unidirectional Traffic **][Risk Score: 20][Risk Info: No server to client traffic][PLAIN TEXT (ds 0/u6)][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,100,0,0,0,0,0,0,0,0,0]
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6 UDP [2001:470:1f16:13f::2]:53959 <-> [2a03:2880:fffe:b:face:b00c::99]:53 [proto: 5/DNS][IP: 119/Facebook][ClearText][Confidence: DPI][FPC: 5/DNS, Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/133 bytes <-> 1 pkts/273 bytes][Goodput ratio: 38/70][0.09 sec][Hostname/SNI: star.c10r.facebook.com][2a03:2880:1010:6f03:face:b00c::2][DNS Id: 0x1a02][PLAIN TEXT (facebook)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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7 UDP [2001:470:1f16:13f::2]:6404 <-> [2a03:2880:fffe:b:face:b00c::99]:53 [proto: 5/DNS][IP: 119/Facebook][ClearText][Confidence: DPI][FPC: 5/DNS, Confidence: DPI][DPI packets: 2][cat: Network/14][1 pkts/133 bytes <-> 1 pkts/261 bytes][Goodput ratio: 38/68][0.09 sec][Hostname/SNI: star.c10r.facebook.com][173.252.120.6][DNS Id: 0x088c][PLAIN TEXT (facebook)][Plen Bins: 0,50,0,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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8 TCP [2604:a880:1:20::224:b001]:993 <-> [2001:470:1f17:13f:6d69:c72:7313:616f]:35610 [proto: 51/IMAPS][IP: 442/DigitalOcean][Encrypted][Confidence: DPI][FPC: 51/IMAPS, Confidence: DPI][DPI packets: 2][cat: Email/3][1 pkts/152 bytes <-> 1 pkts/106 bytes][Goodput ratio: 30/0][0.01 sec][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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9 TCP [2604:a880:1:20::224:b001]:993 <-> [2001:470:1f17:13f:6d69:c72:7313:616f]:56381 [proto: 51/IMAPS][IP: 442/DigitalOcean][Encrypted][Confidence: DPI][FPC: 51/IMAPS, Confidence: DPI][DPI packets: 2][cat: Email/3][1 pkts/152 bytes <-> 1 pkts/106 bytes][Goodput ratio: 30/0][0.07 sec][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 ICMPV6 [2001:470:1f16:13f::2]:0 -> [2604:a880:1:20::224:b001]:0 [proto: 102/ICMPV6][IP: 442/DigitalOcean][ClearText][Confidence: DPI][FPC: 102/ICMPV6, Confidence: DPI][DPI packets: 1][cat: Network/14][1 pkts/200 bytes -> 0 pkts/0 bytes][Goodput ratio: 59/0][< 1 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
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