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TLS: fix JA4 when there are no ciphers or extensions (#3084)

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Ivan Nardi 2026-01-13 18:33:23 +00:00 • committed by GitHub
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commit d6cbd624d0
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8 changed files with 17 additions and 9 deletions
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tests/cfgs/default/result/KakaoTalk_chat.pcap.out
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@ -63,7 +63,7 @@ JA Host Stats:
7 TCP 10.24.82.188:37821 <-> 210.103.240.15:443 [proto: 91.193/TLS.KakaoTalk][Stack: TLS.KakaoTalk][IP: 0/Unknown][Encrypted][Confidence: DPI][FPC: 193/KakaoTalk, Confidence: DNS][DPI packets: 13][cat: Chat/9][Breed: Acceptable][13 pkts/2036 bytes <-> 14 pkts/5090 bytes][Goodput ratio: 63/84][11.34 sec][bytes ratio: -0.429 (Download)][IAT c2s/s2c min/avg/max/stddev: 0/0 1114/74 10357/172 3082/62][Pkt Len c2s/s2c min/avg/max/stddev: 56/56 157/364 429/1336 152/451][Risk: ** Obsolete TLS (v1.1 or older) **** Weak TLS Cipher **][Risk Score: 200][Risk Info: Cipher TLS_RSA_WITH_AES_128_CBC_SHA / TLSv1][nDPI Fingerprint: 2d5cc91f5a8f1da5bc7a6486ce676533][TCP Fingerprint: 2_64_14600_f6101b157c46/Unknown][TLSv1][JA4: t10i350200_1f24bcc5f17d_33a13ba74d1c][ServerNames: *.kakao.com][JA3S: 4192c0a946c5bd9b544b4656d9f624a4][Issuer: C=US, O=Thawte, Inc., CN=Thawte SSL CA][Subject: C=KR, ST=Gyeonggi-do, L=Seongnam-si, O=Kakao Corp., CN=*.kakao.com][Certificate SHA-1: 0D:14:6D:8D:5E:EB:F5:F5:42:87:CD:AB:AE:A1:DC:AA:5A:76:6F:E4][Validity: 2014-04-18 00:00:00 - 2016-04-17 23:59:59][Cipher: TLS_RSA_WITH_AES_128_CBC_SHA][Plen Bins: 0,16,0,0,0,8,8,0,0,0,16,25,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,16,0,0,0,0,0,0,0]
8 TCP 10.24.82.188:51021 <-> 103.246.57.251:8080 [proto: 131/HTTP_Proxy][Stack: HTTP_Proxy][IP: 0/Unknown][ClearText][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 19][cat: Web/5][Breed: Acceptable][17 pkts/2231 bytes <-> 9 pkts/1695 bytes][Goodput ratio: 48/63][46.77 sec][bytes ratio: 0.137 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 50/36 2833/4340 12590/13131 4126/4407][Pkt Len c2s/s2c min/avg/max/stddev: 68/68 131/188 657/274 136/75][TCP Fingerprint: 2_64_14600_f6101b157c46/Unknown][Plen Bins: 13,13,27,0,27,6,6,0,0,0,0,0,0,0,0,0,0,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
9 TCP 139.150.0.125:443 <-> 10.24.82.188:46947 [proto: 91/TLS][Stack: TLS][IP: 0/Unknown][Encrypted][Confidence: Match by port][FPC: 0/Unknown, Confidence: Unknown][DPI packets: 18][cat: Web/5][Breed: Safe][9 pkts/1737 bytes <-> 9 pkts/672 bytes][Goodput ratio: 71/25][24.52 sec][bytes ratio: 0.442 (Upload)][IAT c2s/s2c min/avg/max/stddev: 40/104 3456/3426 12765/12806 4427/4480][Pkt Len c2s/s2c min/avg/max/stddev: 56/56 193/75 303/98 123/21][Plen Bins: 0,44,0,0,0,0,0,55,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
10 TCP 10.24.82.188:58964 <-> 54.255.253.199:5223 [proto: 91/TLS][Stack: TLS][IP: 461/AWS_EC2][Encrypted][Confidence: DPI][FPC: 461/AWS_EC2, Confidence: IP address][DPI packets: 6][cat: Web/5][Breed: Safe][3 pkts/290 bytes <-> 3 pkts/1600 bytes][Goodput ratio: 27/87][0.31 sec][bytes ratio: -0.693 (Download)][IAT c2s/s2c min/avg/max/stddev: 15/5 107/56 199/108 92/52][Pkt Len c2s/s2c min/avg/max/stddev: 68/68 97/533 146/1456 35/652][Risk: ** Known Proto on Non Std Port **** Obsolete TLS (v1.1 or older) **][Risk Score: 150][Risk Info: TLSv1 / Expected on port 443][nDPI Fingerprint: 28a778839000b83d0a700e6e7fad161d][TCP Fingerprint: 2_64_14000_078416dac97d/Unknown][TLSv1][JA4: t10i150000_e2ff6cb279ee_e3b0c44298fc][Plen Bins: 0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,50,0,0,0,0]
10 TCP 10.24.82.188:58964 <-> 54.255.253.199:5223 [proto: 91/TLS][Stack: TLS][IP: 461/AWS_EC2][Encrypted][Confidence: DPI][FPC: 461/AWS_EC2, Confidence: IP address][DPI packets: 6][cat: Web/5][Breed: Safe][3 pkts/290 bytes <-> 3 pkts/1600 bytes][Goodput ratio: 27/87][0.31 sec][bytes ratio: -0.693 (Download)][IAT c2s/s2c min/avg/max/stddev: 15/5 107/56 199/108 92/52][Pkt Len c2s/s2c min/avg/max/stddev: 68/68 97/533 146/1456 35/652][Risk: ** Known Proto on Non Std Port **** Obsolete TLS (v1.1 or older) **][Risk Score: 150][Risk Info: TLSv1 / Expected on port 443][nDPI Fingerprint: 78b9fd7aaee38eda0794b14987a631ce][TCP Fingerprint: 2_64_14000_078416dac97d/Unknown][TLSv1][JA4: t10i150000_e2ff6cb279ee_000000000000][Plen Bins: 0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,50,0,0,0,0]
11 TCP 10.24.82.188:37557 <-> 31.13.68.84:80 [proto: 7.119/HTTP.Facebook][Stack: HTTP.Facebook][IP: 119/Facebook][ClearText][Confidence: DPI][FPC: 119/Facebook, Confidence: DNS][DPI packets: 7][cat: SocialNetwork/6][Breed: Fun][5 pkts/487 bytes <-> 6 pkts/627 bytes][Goodput ratio: 38/45][21.97 sec][Hostname/SNI: www.facebook.com][bytes ratio: -0.126 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 40/40 115/102 264/210 106/77][Pkt Len c2s/s2c min/avg/max/stddev: 56/56 97/104 243/339 73/105][URL: www.facebook.com/mobile/status.php][StatusCode: 204][User-Agent: Dalvik/1.6.0 (Linux; U; Android 4.4.4; MI 3W MIUI/V6.4.3.0.KXDMICB)][TCP Fingerprint: 2_64_14600_f6101b157c46/Unknown][PLAIN TEXT (GET /mobile/status.php HTTP/1.1)][Plen Bins: 0,0,0,0,0,50,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
12 TCP 10.24.82.188:37553 <-> 31.13.68.84:80 [proto: 7.119/HTTP.Facebook][Stack: HTTP.Facebook][IP: 119/Facebook][ClearText][Confidence: DPI][FPC: 119/Facebook, Confidence: IP address][DPI packets: 7][cat: SocialNetwork/6][Breed: Fun][5 pkts/487 bytes <-> 5 pkts/571 bytes][Goodput ratio: 38/49][21.81 sec][Hostname/SNI: www.facebook.com][bytes ratio: -0.079 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 43/38 5452/101 21457/215 9241/81][Pkt Len c2s/s2c min/avg/max/stddev: 56/56 97/114 243/339 73/112][URL: www.facebook.com/mobile/status.php][StatusCode: 204][User-Agent: Dalvik/1.6.0 (Linux; U; Android 4.4.4; MI 3W MIUI/V6.4.3.0.KXDMICB)][TCP Fingerprint: 2_64_14600_f6101b157c46/Unknown][PLAIN TEXT (GET /mobile/status.php HTTP/1.1)][Plen Bins: 0,0,0,0,0,50,0,0,50,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
13 TCP 216.58.221.10:80 <-> 10.24.82.188:35922 [proto: 7/HTTP][Stack: HTTP][IP: 126/Google][ClearText][Confidence: Match by port][FPC: 126/Google, Confidence: IP address][DPI packets: 14][cat: Web/5][Breed: Acceptable][7 pkts/392 bytes <-> 7 pkts/392 bytes][Goodput ratio: 0/0][25.75 sec][bytes ratio: 0.000 (Mixed)][IAT c2s/s2c min/avg/max/stddev: 136/98 3845/3844 13075/13111 4719/4735][Pkt Len c2s/s2c min/avg/max/stddev: 56/56 56/56 56/56 0/0][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]