Scan Android's apk files for SECRET_CODE

android_secret_codes_scan.sh

#!/bin/bash
###############################################################################
###                For finding all secret codes in android                  ###
###############################################################################
# author: @ptantiku
#
# refer: http://forum.xda-developers.com/showthread.php?t=540483
#
# *****************************************************************************

### prerequisites: ###
#  - Android (rooted)
#  - Android Development Tools (adb)
#  - wget -O bin2xml.pl http://android-random.googlecode.com/files/axml2xml.pl
#  - sudo apt-get install perl libunicode-string-perl unzip
#
# *****************************************************************************

### prepare apk files (run on PC) ###
# adb devices
# adb shell
# su
# mkdir /sdcard/apks
# find /system/app -name '*.apk' -exec cp {} /sdcard/apks \;
# find /data/app -name '*.apk' -exec cp {} /sdcard/apks \;
# exit
# mkdir /tmp/apks
# cd /tmp/apks
# adb pull /sdcard/apks .
#
# *****************************************************************************

#empty output
> output.txt

# for every file in current directory (presumebly /tmp/apks)
for f in `find . -name '*.apk'`
do
    echo "Trying on $f ..."
    # unzip classes.dex inside, and grep with word 'SECRET'
    check=$(unzip -p $f | strings | grep -i 'SECRET')
    if [ $? -eq 0 ]
    then
        # extract AndroidManifest.xml, make it readable,
        # then transform matching code into *#*#(code)#*#* format
        echo $f >> output.txt;
        unzip -p $f AndroidManifest.xml | perl bin2xml.pl | grep 'host=' | sed -rn 's/.*"([0-9]+)".*/*#*#\1#*#*/gp' >> output.txt
    fi
done

# print out
grep -B1 '#' output.txt

output from CyanogenMod 11:

./SprintHiddenMenu.apk
*#*#33284#*#*
*#*#3282#*#*
*#*#786#*#*
*#*#72786#*#*
*#*#675#*#*
*#*#68575#*#*
*#*#8378#*#*
--
./Email.apk
*#*#36245#*#*
--
./com.google.android.gms-2.apk
*#*#426377962#*#*
*#*#426#*#*

List of known secret codes:
http://www.reddit.com/r/Android/comments/1sl0ep/list_of_android_secret_codes_tips_and_tricks/