mirror of
https://github.com/NohamR/RMHook-Android.git
synced 2026-10-10 18:29:42 +00:00
Add Android build and APK injection scripts
This commit is contained in:
√(noham)²
123
script/build.sh
Executable file
123
script/build.sh
Executable file
@@ -0,0 +1,123 @@
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#!/bin/bash
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# Script to compile the native hooking library for Android
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set -euo pipefail
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PROJECT_DIR=$(cd "$(dirname "$0")/.." && pwd)
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SRC_DIR="$PROJECT_DIR/src"
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BUILD_DIR="$PROJECT_DIR/build"
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LIBS_DIR="$PROJECT_DIR/libs"
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API_LEVEL="${ANDROID_API_LEVEL:-21}"
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# Qt path detection
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QT_DIR="${QT_DIR:-$HOME/Qt}"
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QT_VERSION="${QT_VERSION:-6.10.2}"
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QT_HOST_DIR="$QT_DIR/$QT_VERSION/android_arm64_v8a"
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QT_LIB_DIR="$QT_HOST_DIR/lib"
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SO_NAME="librmhook.so"
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# --- Auto-detect Android NDK ---
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find_ndk() {
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if [ -n "${ANDROID_NDK_HOME:-}" ] && [ -d "$ANDROID_NDK_HOME" ]; then
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echo "$ANDROID_NDK_HOME"; return
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fi
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local brew_ndk
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brew_ndk=$(find /opt/homebrew /usr/local -path "*/android-ndk/*/toolchains/llvm/prebuilt" -type d 2>/dev/null | head -1)
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if [ -n "$brew_ndk" ]; then
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echo "$(dirname "$(dirname "$(dirname "$brew_ndk")")")"; return
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fi
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local sdk_ndk
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sdk_ndk=$(find "$HOME/Library/Android/sdk/ndk" -maxdepth 1 -type d 2>/dev/null | sort -V | tail -1)
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if [ -n "$sdk_ndk" ] && [ -d "$sdk_ndk" ]; then
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echo "$sdk_ndk"; return
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fi
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for p in /opt/android-ndk /usr/local/android-ndk "$HOME/android-ndk"; do
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if [ -d "$p" ]; then echo "$p"; return; fi
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done
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echo ""
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}
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NDK_HOME="$(find_ndk)"
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CC=""
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if [ -n "$NDK_HOME" ]; then
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CC=$(find "$NDK_HOME/toolchains/llvm/prebuilt" -type f \
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-name "aarch64-linux-android${API_LEVEL}-clang" -print -quit 2>/dev/null)
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fi
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if [ -z "$CC" ]; then
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echo "❌ aarch64-linux-android clang not found."
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echo " Set ANDROID_NDK_HOME to your NDK path, or install via:"
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echo " brew install --cask android-ndk"
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exit 1
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fi
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echo "🔨 Compiling $SO_NAME..."
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echo "📦 Qt path: $QT_HOST_DIR"
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echo "📦 NDK: $NDK_HOME"
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echo ""
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# Clean and create build directories
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rm -rf "$BUILD_DIR"
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mkdir -p "$BUILD_DIR"
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# --- Step 0: Build dependencies (shadowhook) ---
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echo "[0/2] Building hooking library (shadowhook)..."
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"$LIBS_DIR/build_deps.sh"
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# --- Step 1: Prepare Qt headers ---
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echo "[1/2] Preparing Qt headers..."
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if [ ! -d "$QT_HOST_DIR/include" ]; then
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echo "⚠️ Qt not found at $QT_HOST_DIR/include"
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echo " Install with: aqt install-qt all_os android $QT_VERSION -m qtwebsockets --outputdir $QT_DIR"
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exit 1
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fi
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for qt_lib in \
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"$QT_LIB_DIR/libQt6Core_arm64-v8a.so" \
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"$QT_LIB_DIR/libQt6Network_arm64-v8a.so" \
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"$QT_LIB_DIR/libQt6WebSockets_arm64-v8a.so"; do
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if [ ! -f "$qt_lib" ]; then
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echo "ERROR: Required Qt library not found: $qt_lib"
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exit 1
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fi
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done
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QT_INCLUDES="-I$QT_HOST_DIR/include"
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for subdir in "$QT_HOST_DIR/include"/*/; do
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QT_INCLUDES="$QT_INCLUDES -I$subdir"
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done
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echo "✅ Qt headers ready at $QT_HOST_DIR"
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echo "✅ Qt libraries ready at $QT_LIB_DIR"
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# --- Step 2: Compile native hooking library ---
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echo "[2/2] Compiling $SO_NAME..."
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"$CC" -shared -fPIC -O2 -std=c++17 -stdlib=libc++ -fno-exceptions -fno-rtti \
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-DQT_NO_VERSION_TAGGING \
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-o "$BUILD_DIR/$SO_NAME" \
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"$SRC_DIR/rmhook.cpp" \
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"$SRC_DIR/Config.cpp" \
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$QT_INCLUDES \
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-I"$LIBS_DIR/shadowhook/shadowhook/src/main/cpp/include" \
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-I"$SRC_DIR" \
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-L"$LIBS_DIR" -lshadowhook \
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-L"$QT_LIB_DIR" \
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-Wl,--no-undefined \
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-Wl,-z,defs \
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-l:libQt6WebSockets_arm64-v8a.so \
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-l:libQt6Network_arm64-v8a.so \
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-l:libQt6Core_arm64-v8a.so \
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-lc++_shared \
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-llog -ldl -lm \
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-Wno-incompatible-pointer-types
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echo ""
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echo "✅ Compilation successful!"
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echo "📍 Library: $BUILD_DIR/$SO_NAME ($(ls -lh "$BUILD_DIR/$SO_NAME" | awk '{print $5}'))"
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echo ""
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echo "🚀 To inject into the reMarkable application:"
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echo " ./script/inject.sh"
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echo ""
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166
script/inject.sh
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166
script/inject.sh
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@@ -0,0 +1,166 @@
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#!/bin/bash
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# Script to patch and sign the reMarkable Android APKs
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set -euo pipefail
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PROJECT_DIR=$(cd "$(dirname "$0")/.." && pwd)
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BUILD_DIR="$PROJECT_DIR/build"
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OUTPUT_DIR="$PROJECT_DIR/output"
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LIBS_DIR="$PROJECT_DIR/libs"
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# --- Auto-detect Android SDK build tools ---
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find_build_tools() {
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local sdk_root="${ANDROID_SDK_ROOT:-$HOME/Library/Android/sdk}"
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local bt
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bt=$(find "$sdk_root/build-tools" -maxdepth 1 -type d 2>/dev/null | sort -V | tail -1)
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if [ -n "$bt" ] && [ -d "$bt" ]; then
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echo "$bt"; return
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fi
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echo ""
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}
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BUILD_TOOLS="${ANDROID_SDK_BUILD_TOOLS:-$(find_build_tools)}"
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if [ -z "$BUILD_TOOLS" ] || [ ! -d "$BUILD_TOOLS" ]; then
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echo "❌ Android SDK build-tools not found."
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echo " Set ANDROID_SDK_BUILD_TOOLS to your build-tools path."
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exit 1
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fi
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ZIPALIGN="$BUILD_TOOLS/zipalign"
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APKSIGNER="$BUILD_TOOLS/apksigner"
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KEYSTORE="$PROJECT_DIR/config/rmhook.keystore"
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KEYSTORE_PASS="rmhook"
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KEY_ALIAS="rmhook"
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usage() {
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echo "Usage: $0 [apk_dir]"
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echo ""
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echo " apk_dir - Directory containing the split APKs (default: ~/reMarkable/app)"
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echo ""
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echo "Output: patched APKs in $OUTPUT_DIR/"
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exit 1
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}
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APK_DIR="${1:-$HOME/reMarkable/app}"
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echo "💉 Injecting RMHook into reMarkable APKs..."
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echo "📦 APK source: $APK_DIR"
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echo ""
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if [ ! -f "$BUILD_DIR/librmhook.so" ]; then
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echo "❌ librmhook.so not found. Run ./script/build.sh first."
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exit 1
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fi
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# Clean and create output directory
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rm -rf "$OUTPUT_DIR"
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mkdir -p "$OUTPUT_DIR"
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# --- Step 1: Decompile and patch base.apk (smali injection only, no resources) ---
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echo "[1/4] Patching base.apk (smali injection)..."
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# Use -r (--no-res) to skip decoding/recoding resources. We only need to modify the DEX.
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apktool d -r "$APK_DIR/base.apk" -o "$BUILD_DIR/base" -f
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MAIN_SMALI="$BUILD_DIR/base/smali/com/remarkable/mobile/MainActivity.smali"
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if [ ! -f "$MAIN_SMALI" ]; then
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echo "❌ MainActivity.smali not found"
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exit 1
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fi
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# Insert System.loadLibrary("rmhook") at the very start of <clinit>
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sed -i '' '/.method static constructor <clinit>()V/{
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n
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/.locals/{
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a\
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\
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const-string v0, "rmhook"\
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\
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invoke-static {v0}, Ljava/lang/System;->loadLibrary(Ljava/lang/String;)V
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}
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}' "$MAIN_SMALI"
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echo "✅ Injected System.loadLibrary(\"rmhook\") into MainActivity.<clinit>"
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apktool b "$BUILD_DIR/base" -o "$BUILD_DIR/base_patched.apk"
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# --- Step 2: Patch split_config.arm64_v8a.apk (add hook library) ---
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echo "[2/4] Injecting ShadowHook libraries into arm64 split..."
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SPLIT_ARM64="$APK_DIR/split_config.arm64_v8a.apk"
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if [ ! -f "$SPLIT_ARM64" ]; then
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echo "❌ $SPLIT_ARM64 not found"
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exit 1
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fi
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mkdir -p "$BUILD_DIR/split_arm64"
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unzip -q "$SPLIT_ARM64" -d "$BUILD_DIR/split_arm64"
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cp "$BUILD_DIR/librmhook.so" "$BUILD_DIR/split_arm64/lib/arm64-v8a/"
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cp "$LIBS_DIR/libshadowhook_nothing.so" "$BUILD_DIR/split_arm64/lib/arm64-v8a/"
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rm -rf "$BUILD_DIR/split_arm64/META-INF"
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(cd "$BUILD_DIR/split_arm64" && zip -q -r -0 "$BUILD_DIR/split_arm64_raw.apk" . -x "*.so")
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(cd "$BUILD_DIR/split_arm64" && zip -q -r "$BUILD_DIR/split_arm64_raw.apk" lib/)
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# --- Step 3: Align APKs ---
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echo "[3/4] Aligning APKs..."
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"$ZIPALIGN" -p -f 4 "$BUILD_DIR/base_patched.apk" "$BUILD_DIR/base_aligned.apk"
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"$ZIPALIGN" -p -f 4 "$BUILD_DIR/split_arm64_raw.apk" "$BUILD_DIR/split_arm64_aligned.apk"
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SPLIT_XXHDPI="$APK_DIR/split_config.xxhdpi.apk"
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if [ -f "$SPLIT_XXHDPI" ]; then
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mkdir -p "$BUILD_DIR/split_xxhdpi"
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unzip -q "$SPLIT_XXHDPI" -d "$BUILD_DIR/split_xxhdpi"
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rm -rf "$BUILD_DIR/split_xxhdpi/META-INF"
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(cd "$BUILD_DIR/split_xxhdpi" && zip -q -r -0 "$BUILD_DIR/split_xxhdpi_raw.apk" .)
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"$ZIPALIGN" -p -f 4 "$BUILD_DIR/split_xxhdpi_raw.apk" "$BUILD_DIR/split_xxhdpi_aligned.apk"
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fi
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# --- Step 4: Sign all APKs ---
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echo "[4/4] Signing APKs..."
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if [ ! -f "$KEYSTORE" ]; then
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mkdir -p "$(dirname "$KEYSTORE")"
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echo "🔑 Generating signing keystore..."
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keytool -genkeypair -v \
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-keystore "$KEYSTORE" \
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-alias "$KEY_ALIAS" \
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-keyalg RSA -keysize 2048 \
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-validity 10000 \
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-storepass "$KEYSTORE_PASS" \
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-keypass "$KEYSTORE_PASS" \
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-dname "CN=RMHook, OU=Dev, O=RMHook, L=Unknown, ST=Unknown, C=US" \
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2>/dev/null
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fi
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sign_apk() {
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local input="$1"
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local output="$2"
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"$APKSIGNER" sign \
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--ks "$KEYSTORE" \
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--ks-pass "pass:$KEYSTORE_PASS" \
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--ks-key-alias "$KEY_ALIAS" \
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--key-pass "pass:$KEYSTORE_PASS" \
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--out "$output" \
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"$input"
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}
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sign_apk "$BUILD_DIR/base_aligned.apk" "$OUTPUT_DIR/base.apk"
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sign_apk "$BUILD_DIR/split_arm64_aligned.apk" "$OUTPUT_DIR/split_config.arm64_v8a.apk"
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if [ -f "$BUILD_DIR/split_xxhdpi_aligned.apk" ]; then
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sign_apk "$BUILD_DIR/split_xxhdpi_aligned.apk" "$OUTPUT_DIR/split_config.xxhdpi.apk"
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fi
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echo ""
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echo "✅ Injection successful!"
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echo "📍 Patched APKs in: $OUTPUT_DIR/"
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ls -lh "$OUTPUT_DIR/"*.apk
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echo ""
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echo "🚀 To install on your reMarkable:"
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echo " adb uninstall com.remarkable.mobile"
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echo " adb install-multiple --no-streaming $OUTPUT_DIR/base.apk $OUTPUT_DIR/split_config.arm64_v8a.apk $OUTPUT_DIR/split_config.xxhdpi.apk"
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echo ""
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echo "🔍 To debug:"
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echo " adb logcat -s 'RMHook:*'"
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echo ""
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