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Weird anomaly with JA3ToSpec and PaddingExtension (21) #8

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0xARYA opened this issue Apr 27, 2021 · 2 comments
Closed

Weird anomaly with JA3ToSpec and PaddingExtension (21) #8

0xARYA opened this issue Apr 27, 2021 · 2 comments

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@0xARYA
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0xARYA commented Apr 27, 2021

the padding extension seemingly is added to the spec's extension slice, which is resolved from the JA3 through JA3ToSpec but fails to show up on the response on https://ja3er.com/json

the JA3 im having this issue with specifically is 771,4865-4866-4867-49195-49199-49196-49200-52393-52392-49171-49172-156-157-47-53,0-23-65281-10-11-35-16-5-13-18-51-45-43-27-21,29-23-24,0 (tlsfingerprint.io)
@0xARYA
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0xARYA commented Apr 27, 2021

found the culprit it's PSKKeyExchangeModesExtension

@0xARYA
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0xARYA commented Apr 27, 2021

fixed the issue, will submit a PR soon... basically just mapped the curveID's to become KeyShare struct compliant ({Group: CURVE_ID}) and passed that to PSKKeyExchangeModesExtension in the same manner we dynamically initiate the curves and point extensions

@0xARYA 0xARYA closed this as completed Apr 27, 2021
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