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nurkert/ja4-spoofer

Offensive & Pentesting

An open‑source toolkit for controlled TLS ClientHello and JA4 fingerprint experiments, patching BoringSSL, NSS and OpenSSL to launch configurable test clients.

Dart Latest v1.4.0 · 2mo ago Security brief →

Features

  • Patch workflows for BoringSSL, NSS and OpenSSL
  • Flutter desktop GUI for profile editing, capture, randomization and launch
  • Scriptable CLI launchers for Firefox, Chromium and curl
  • Shared profile model covering JA4‑relevant ClientHello fields

Recent releases

View all 7 releases →
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v1.4.0 Bug fix
Crypto / TLS

ClientHello validation

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About

Stars
3
Forks
1
Languages
Dart Shell Python

Install & Platforms

Install via
shell-script binary apt
Platforms
linux

Beta — feedback welcome: [email protected]