288 lines
9.7 KiB
Bash
288 lines
9.7 KiB
Bash
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#!/system/bin/sh
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# Boot Timing & Verification Evasion
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#
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# Controls WHEN custom drivers and modifications are applied relative
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# to Android's verification checkpoints:
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#
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# 1. AVB (Android Verified Boot) — bootloader, before kernel
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# KernelSU handles this. We don't touch partitions. PASS.
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#
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# 2. dm-verity — block-level hash verification
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# KernelSU overlays are above dm-verity. Stock blocks untouched. PASS.
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#
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# 3. Play Integrity / SafetyNet — after boot, runs in GMS process
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# This is what we need to time around. First check is ~10-30s
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# after boot_completed. Periodic re-checks every few hours.
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#
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# 4. Banking apps / root detectors — check on app launch
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# These read props, scan /proc, check mount points.
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#
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# Strategy:
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# - post-fs-data: ONLY stock-safe props. No mods. No spoofs.
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# - boot_completed: Wait for first PI attestation to finish
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# - Apply mods AFTER attestation window closes
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# - Run a watcher that detects PI re-checks and temporarily
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# unmounts spoofs + restores stock props during the check
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MODDIR="/data/adb/modules/driver-manager"
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CONFDIR="$MODDIR/config"
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LOGFILE="$MODDIR/driver-manager.log"
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mlog() {
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echo "$(date '+%Y-%m-%d %H:%M:%S') [boot_timing] $1" >> "$LOGFILE"
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}
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# =================================================================
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# Phase 1: Detect when Play Integrity has completed first check
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# =================================================================
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# GMS runs attestation via com.google.android.gms.unstable
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# DroidGuard collects device state in this window
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# We watch for this process to start and finish
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wait_for_pi_pass() {
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mlog "Waiting for Play Integrity first attestation..."
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# Wait for GMS to be fully running
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TIMEOUT=120
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ELAPSED=0
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while [ $ELAPSED -lt $TIMEOUT ]; do
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# Check if GMS unstable (DroidGuard) has started
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GMS_PID=$(pidof com.google.android.gms.unstable 2>/dev/null)
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if [ -n "$GMS_PID" ]; then
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mlog "DroidGuard detected (PID $GMS_PID), waiting for completion..."
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# Wait for the DroidGuard process to finish its attestation
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# It typically runs for 5-15 seconds during initial check
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DROID_WAIT=0
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while [ $DROID_WAIT -lt 30 ]; do
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sleep 1
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DROID_WAIT=$((DROID_WAIT + 1))
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# Check if it's still actively doing attestation
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# DroidGuard CPU usage drops after attestation completes
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if [ -d "/proc/$GMS_PID" ]; then
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CPU=$(cat /proc/$GMS_PID/stat 2>/dev/null | awk '{print $14+$15}')
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if [ -n "$CPU" ] && [ "$CPU" -lt 5 ] && [ $DROID_WAIT -gt 10 ]; then
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mlog "DroidGuard idle after ${DROID_WAIT}s — attestation likely complete"
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break
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fi
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else
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mlog "DroidGuard process exited after ${DROID_WAIT}s"
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break
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fi
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done
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# Extra safety margin
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sleep 5
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mlog "PI attestation window closed"
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return 0
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fi
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sleep 2
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ELAPSED=$((ELAPSED + 2))
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done
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# If GMS never started (unlikely), just wait a safe fixed time
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mlog "GMS not detected after ${TIMEOUT}s — using fixed delay"
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sleep 30
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return 0
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}
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# =================================================================
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# Phase 2: Apply modifications after PI passes
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# =================================================================
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apply_after_pi() {
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mlog "Applying modifications..."
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# Apply driver spoofs
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SPOOF_ENABLED=$(cat "$CONFDIR/spoof_enabled" 2>/dev/null || echo "0")
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if [ "$SPOOF_ENABLED" = "1" ]; then
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sh "$MODDIR/scripts/driver_spoof.sh" apply
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mlog "Driver spoofs applied"
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fi
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# Set non-stock props that we held back during PI window
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# These are the props that root detectors look for
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resetprop input.gamepad.enabled true
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resetprop persist.sys.usb.otg 1
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mlog "All modifications applied"
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}
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# =================================================================
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# Phase 3: PI Watcher — monitor for re-attestation and hide
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# =================================================================
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# Play Integrity can re-check periodically (every few hours) or
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# when an app requests it (banking app launch, Google Pay, etc.)
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# We watch for DroidGuard activity and temporarily go clean.
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PI_WATCHER_PID=""
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start_pi_watcher() {
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mlog "Starting PI watcher daemon..."
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(
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while true; do
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sleep 10
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# Check if DroidGuard is doing a new attestation
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GMS_PID=$(pidof com.google.android.gms.unstable 2>/dev/null)
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if [ -z "$GMS_PID" ]; then
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continue
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fi
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# Check if it's actively using CPU (attestation in progress)
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CPU=$(cat /proc/$GMS_PID/stat 2>/dev/null | awk '{print $14+$15}')
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PREV_CPU="$CPU"
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sleep 2
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CPU2=$(cat /proc/$GMS_PID/stat 2>/dev/null | awk '{print $14+$15}')
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if [ -n "$CPU" ] && [ -n "$CPU2" ]; then
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DELTA=$((CPU2 - CPU))
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if [ "$DELTA" -gt 10 ]; then
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# DroidGuard is active — temporarily hide
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mlog "PI re-check detected! Temporarily restoring stock..."
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hide_for_pi
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fi
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fi
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done
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) &
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PI_WATCHER_PID=$!
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echo "$PI_WATCHER_PID" > "$MODDIR/run/pi_watcher.pid"
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mlog "PI watcher started (PID $PI_WATCHER_PID)"
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}
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hide_for_pi() {
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# Temporarily unmount all driver spoofs
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sh "$MODDIR/scripts/driver_spoof.sh" restore 2>/dev/null
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# Remove non-stock props
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resetprop --delete input.gamepad.enabled 2>/dev/null
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resetprop --delete persist.sys.usb.otg 2>/dev/null
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resetprop --delete vendor.powervr.opencl.allowfp16 2>/dev/null
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resetprop --delete vendor.powervr.opencl.profiling 2>/dev/null
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resetprop --delete bluetooth.le.no_location_permission_scan 2>/dev/null
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# Ensure boot state looks clean
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resetprop ro.boot.verifiedbootstate green 2>/dev/null
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resetprop ro.boot.flash.locked 1 2>/dev/null
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resetprop ro.boot.vbmeta.device_state locked 2>/dev/null
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mlog "Hiding for PI check..."
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# Wait for DroidGuard to finish
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WAIT=0
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while [ $WAIT -lt 60 ]; do
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sleep 2
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WAIT=$((WAIT + 2))
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GMS_PID=$(pidof com.google.android.gms.unstable 2>/dev/null)
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if [ -z "$GMS_PID" ]; then
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break
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fi
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CPU=$(cat /proc/$GMS_PID/stat 2>/dev/null | awk '{print $14+$15}')
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sleep 1
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CPU2=$(cat /proc/$GMS_PID/stat 2>/dev/null | awk '{print $14+$15}')
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DELTA=$((CPU2 - CPU))
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if [ "$DELTA" -lt 5 ]; then
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break
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fi
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done
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# Extra safety margin
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sleep 5
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mlog "PI check finished, re-applying modifications..."
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apply_after_pi
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}
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# =================================================================
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# Boot prop spoofing — make boot state look locked/verified
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# =================================================================
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spoof_boot_props() {
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# These props are checked by Play Integrity and root detectors
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# They should reflect a locked, verified device
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# Verified boot state
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resetprop ro.boot.verifiedbootstate green
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resetprop ro.boot.flash.locked 1
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resetprop ro.boot.vbmeta.device_state locked
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resetprop ro.boot.veritymode enforcing
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# Remove KernelSU traces from props
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resetprop --delete ro.kernelsu.version 2>/dev/null
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resetprop --delete ro.kernelsu.versionCode 2>/dev/null
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# Stock build fingerprint (don't modify — just ensure it's not overridden)
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# resetprop ro.build.fingerprint should already be stock
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# Ensure SELinux appears enforcing
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resetprop ro.build.selinux 1
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mlog "Boot props spoofed (green/locked/enforcing)"
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}
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# =================================================================
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# Main entry point — called from service.sh
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# =================================================================
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case "$1" in
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run)
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# Full boot timing sequence
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spoof_boot_props
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wait_for_pi_pass
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apply_after_pi
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start_pi_watcher
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mlog "Boot timing sequence complete"
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;;
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hide)
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# Manual hide trigger
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hide_for_pi
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;;
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unhide)
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# Manual re-apply
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apply_after_pi
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;;
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stop)
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# Stop PI watcher
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PID=$(cat "$MODDIR/run/pi_watcher.pid" 2>/dev/null)
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if [ -n "$PID" ]; then
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kill "$PID" 2>/dev/null
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rm -f "$MODDIR/run/pi_watcher.pid"
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mlog "PI watcher stopped"
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fi
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;;
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status)
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PID=$(cat "$MODDIR/run/pi_watcher.pid" 2>/dev/null)
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if [ -n "$PID" ] && kill -0 "$PID" 2>/dev/null; then
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echo "PI watcher: running (PID $PID)"
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else
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echo "PI watcher: not running"
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fi
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# Check boot props
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echo "Boot state: $(getprop ro.boot.verifiedbootstate)"
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echo "Flash lock: $(getprop ro.boot.flash.locked)"
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echo "VBMeta: $(getprop ro.boot.vbmeta.device_state)"
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echo "SELinux: $(getenforce 2>/dev/null || echo unknown)"
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# Check for KSU prop leaks
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KSU_VER=$(getprop ro.kernelsu.version 2>/dev/null)
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if [ -n "$KSU_VER" ]; then
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echo "WARNING: KernelSU version visible: $KSU_VER"
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else
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echo "KernelSU props: hidden"
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fi
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;;
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*)
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echo "Usage: boot_timing.sh {run|hide|unhide|stop|status}"
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echo ""
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echo " run Full boot sequence (wait for PI, apply mods, start watcher)"
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echo " hide Temporarily hide all mods (for manual PI trigger)"
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echo " unhide Re-apply all mods"
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echo " stop Stop PI watcher daemon"
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echo " status Show current state"
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;;
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esac
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