GDB Native Debugging and Patching With AppUse

Published: 24 November 2016
on channel: AppSec Labs

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AppUse: https://appsec-labs.com/appuse/

Used commands:
#1st tab
which android
cd /appuse/.android/android-ndk-r10d/
find . -type f | grep gdbserver
adb push ./prebuilt/android-arm/gdbserver/gdbserver /sdcard/

#2nd tab
adb shell ps
adb shell /sdcard/gdbserver :5050 --attach `adb shell ps | grep com.AppSecLabs.HackMeNative | awk '{print $2}'`

#3rd tab
ls /appuse/targets/com.AppSecLabs.HackMeNative-1/disassembled/lib/armeabi/
adb forward tcp:5050 tcp:5050

#1st tab
find . | grep arm-linux-androideabi-gdb
./toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gdb
(gdb) target remote :5050
(gdb) set solib-search-path /appuse/targets/com.AppSecLabs.HackMeNative-1/disassembled/lib/armeabi/
(gdb) info sharedLibrary
(gdb) x/100 0xac3b7c3c
(gdb) x/100i checkSecret
(gdb) b *0xac3b7d8c
(gdb) c
(gdb) info registers
(gdb) set $r3=1
(gdb) info registers r3
(gdb) c

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