Chrome Native Adblock v1.0.5 (Production Release)

High-performance 100% RAM-only native ad filtering and Manifest V2 enabler for stock Google Chrome on Windows.

Chrome Native Adblock injects a native adblock engine directly into Chrome's Network Service process in memory, validates build-specific PE rules, and provides a modern Windows 11 WinUI 3 desktop dashboard.

What it does

• Evaluates EasyList/ABP-style network and cosmetic rules through adblock-rust.
• Injects the network engine into Chrome's Network Service without modifying the signed chrome.dll file.
• Generates cosmetic/scriptlet payloads from the exact URL of each tab. Rules for YouTube or Vietnamese news sites are not injected into unrelated sites.
• Downloads filter subscriptions with a 64 MiB limit, validates that they contain rules, and atomically replaces the last-known-good cache.
• Uses an ephemeral loopback DevTools port tied to the dedicated %LOCALAPPDATA%\ChromeNativeAdblock\Profile profile.
• Can optionally enable Manifest V2 using the semantic RAM patch from chrome-enable-mv2.

No Chrome sandbox or code-integrity mitigation is disabled. No telemetry is collected by this project.

Compatibility

The native network hook supports Chrome 154.0.8037.58 x64, Chrome 153.0.8010.37 x64, Chrome 152.0.7977.76 x64, and Chrome 152.0.7977.65 x64. Function RVAs, prologues, and URLRequest/GURL layouts are recorded per build under native/hook_rules/ and verified before installation.

Every other Chrome layout is rejected before a hook is installed. Do not copy RVAs or object offsets between Chrome builds.

The current low-level hook sees the final URL but not complete request metadata, so it evaluates requests as resource type other, method GET, with the request URL as its source URL. Generic blocking and exception rules work; type-only or initiator-dependent rules such as $script, $image, $xhr, or $third-party are not yet fully represented by the native hook.

YouTube blocking is best-effort and can change when YouTube changes its player. Subscription scriptlets are deliberately not executed in YouTube's page context because response-pruning scriptlets can trigger its anti-adblock dialog; network rules, cosmetic filtering, visible skip controls, and bounded short-ad acceleration remain active. The batch smoke test reports INCONCLUSIVE when the player, playback progress, or seek evidence cannot be verified; it does not count those cases as passes.

Download

Download ChromeNativeAdblock-GUI-v1.0.5-win-x64.zip from Releases, extract the archive, and run ChromeNativeAdblock.Gui.exe.

The GUI and CLI use a separate Chrome profile by default. Existing bookmarks, cookies, and extensions from the normal Chrome profile are intentionally not copied.

Build and test

Requirements: Windows x64, Rust stable, .NET 10 SDK, and the Windows App SDK workload required by the WinUI project.

cargo test --workspace
cargo build --workspace --release
dotnet test .\ChromeNativeAdblock.slnx -c Release --filter "Category!=Integration"
dotnet build .\ChromeNativeAdblock.slnx -c Release

Chrome-dependent validation on a machine with the supported Chrome build:

dotnet run --project .\launcher\ChromeNativeAdblock.Launcher -c Release -- analyze-mv2
dotnet run --project .\launcher\ChromeNativeAdblock.Launcher -c Release -- engine-smoke
dotnet run --project .\launcher\ChromeNativeAdblock.Launcher -c Release -- cosmetic-smoke
dotnet run --project .\launcher\ChromeNativeAdblock.Launcher -c Release -- network-smoke

Create release archives:

.\scripts\package-release.ps1 -Version v1.0.5

Security model

• Unknown hook layouts fail closed.
• Hook targets must reside in executable .text and match verified prefixes.
• chrome.dll and other Chrome installation files are never changed on disk.
• CDP discovery trusts only a fresh DevToolsActivePort from the managed profile; it does not fall back to another Chrome profile or port 9222.
• Filter downloads are HTTPS subscription URLs controlled by their respective maintainers. See THIRD_PARTY_NOTICES.md.

Please read SECURITY.md before reporting an injection, parser, or update-channel vulnerability.

License

Source code is licensed under the Mozilla Public License 2.0. See LICENSE.