RKNnoVPN/README.md

RKNnoVPN

Transparent proxy for rooted Android — invisible to VPN detection.

No VPN. No TUN. No icon. No TRANSPORT_VPN. Banking apps see nothing.

How It Works

App traffic → iptables TPROXY → sing-box → proxy server

• Uses kernel-level tproxy + iptables instead of Android VPN
• No VpnService, no TUN interface, no status bar icon
• Whitelist mode: only selected apps go through proxy, everything else is direct
• Full IPv4 + IPv6 support with mirrored rules
• Tested against RKNHardering → NOT_DETECTED

Components

Component	Description
Magisk Module	Shell scripts + Go daemon. Manages sing-box, iptables rules, DNS, health monitoring
Android APK	Kotlin + Jetpack Compose controller. Zero network permissions. Talks to daemon via su

Quick Start

1. Download from Releases:

   • privstack-vX.X.X-module.zip — Magisk module
   • privstack-vX.X.X-panel.apk — Controller app

2. Flash module via Magisk Manager / KSU Manager / APatch

3. Reboot

4. Install and open the APK

5. Add a server: paste a vless://, trojan://, ss://, hysteria2://, or tuic:// link

6. Go to Apps tab → select which apps to proxy

7. Tap Connect

Supported Protocols

Protocol	Status
VLESS + Reality	Primary (recommended)
VLESS + TLS	Supported
Trojan	Supported
VMess	Supported
Shadowsocks 2022	Supported
Hysteria2	Supported (sing-box)
TUIC v5	Supported (sing-box)
AmneziaWG	Planned (via wireproxy-awg)

Import Formats

• vless://, vmess://, trojan://, ss://, hysteria2://, hy2://, tuic:// URIs
• Amnezia vpn:// format
• Subscription URLs (base64-encoded URI lists)
• QR codes
• Clash YAML (planned)
• v2rayNG JSON backup (planned)

Detection Resistance

Tested against all 6 modules of RKNHardering:

Check	Result
TRANSPORT_VPN flag	Not set (no VpnService)
TUN interface (tun0)	Not created
VPN status bar icon	Not shown
NOT_VPN capability	Present
Package scan (23 VPN apps)	Not found (APK has no VPN indicators)
SOCKS5/HTTP proxy scan	Not detected (TPROXY ≠ SOCKS5)
Xray gRPC API scan	Blocked (iptables root-only)
/proc/net/tcp scan	Invisible (SELinux, Android 10+)
VerdictEngine result	NOT_DETECTED

APK Features

• Dashboard: connection state, traffic graph, egress IP, latency
• Nodes: server list with groups, latency test, import (paste/QR/subscription)
• Apps: whitelist picker with templates (Browsers, Social, Streaming)
• Audit: 14 security checks + Work Profile placement advisor
• Material 3 with Dynamic Color (Android 12+)
• Russian + English

Building

Prerequisites

• Go 1.22+ (for daemon)
• JDK 17 + Android SDK (for APK)
• Linux/macOS (for cross-compilation)

Quick Build

make all

Individual Components

make daemon    # Build privd + privctl (arm64)
make singbox   # Download sing-box binary
make module    # Assemble Magisk ZIP
make apk       # Build Android APK

CI/CD

Push a tag to trigger automatic release:

git tag v1.0.0
git push origin v1.0.0

GitHub Actions will build everything and create a release with downloadable artifacts.

Architecture

┌─────────────────────────────────────────────┐
│              Android Device (rooted)         │
│                                              │
│  ┌──────────┐        ┌────────────────────┐  │
│  │ APK      │ su -c  │ Magisk Module      │  │
│  │ (no NET) │──────→ │ ┌────────────────┐ │  │
│  │          │ privctl│ │ privd (daemon)  │ │  │
│  └──────────┘        │ │ state machine   │ │  │
│                      │ │ health monitor  │ │  │
│                      │ └───────┬────────┘ │  │
│                      │ ┌───────▼────────┐ │  │
│                      │ │ sing-box       │ │  │
│                      │ │ tproxy inbound │ │  │
│                      │ └───────┬────────┘ │  │
│                      │ ┌───────▼────────┐ │  │
│                      │ │ iptables       │ │  │
│                      │ │ mangle TPROXY  │ │  │
│                      │ │ IPv4 + IPv6    │ │  │
│                      │ └────────────────┘ │  │
│                      └────────────────────┘  │
└─────────────────────────────────────────────┘

License

MIT

Credits

• sing-box — transport core
• box_for_magisk — reference implementation
• RKNHardering — threat model / test suite