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Published on March 25th, 2019 📆 | 6001 Views ⚑

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Androwarn – Yet Another Static Code Analyzer For Malicious Android Applications

iSpeech

Features

• Structural and data flow analysis of the bytecode targeting different malicious behaviours categories
  • Telephony identifiers exfiltration: IMEI, IMSI, MCC, MNC, LAC, CID, operator's name...
  • Device settings exfiltration: software version, usage statistics, system settings, logs...
  • Geolocation information leakage: GPS/WiFi geolocation...
  • Connection interfaces information exfiltration: WiFi credentials, Bluetooth MAC adress...
  • Telephony services abuse: premium SMS sending, phone call composition...
  • Audio/video flow interception: call recording, video capture...
  • Remote connection establishment: socket open call, Bluetooth pairing, APN settings edit...
  • PIM data leakage: contacts, calendar, SMS, mails, clipboard...
  • External memory operations: file access on SD card...
  • PIM data modification: add/delete contacts, calendar events...
  • Arbitrary code execution: native code using JNI, UNIX command, privilege escalation...
  • Denial of Service: event notification deactivation, file deletion, process killing, virtual keyboard disable, terminal shutdown/reboot...
• Report generation according to several detail levels
  • Essential (-v 1) for newbies
  • Advanced (-v 2)
  • Expert (-v 3)
• Report generation according to several formats
  • Plaintext txt
  • Formatted html from a Bootstrap template
  • JSON

Usage

Options

usage: androwarn [-h] -i INPUT [-o OUTPUT] [-v {1,2,3}] [-r {txt,html,json}]
                 [-d]
                 [-L {debug,info,warn,error,critical,DEBUG,INFO,WARN,ERROR,CRITICAL}]
                 [-w]

version: 1.4

optional arguments:
  -h, --help            show this help message and exit
  -i INPUT, --input INPUT
                        APK file to analyze
  -o OUTPUT, --output OUTPUT
                        Output report file (default
                        "./<apk_package_name>_<timestamp>.<report_type>")
  -v {1,2,3}, --verbose {1,2,3}
                        Verbosity level (ESSENTIAL 1, ADVANCED 2, EXPERT 3)
                        (default 1)
  -r {txt,html,json}, --report {txt,html,json}
                        Report type (default "html")
  -d, --display-report  Display analysis results to stdout
  -L {debug,info,warn,error,critical,DEBUG,INFO,WARN,ERROR,CRITICAL}, --log-level {debug,info,warn,error,critical,DEBUG,INFO,WARN,ERROR,CRITICAL}
                        Log level (default "ERROR")
  -w, --with-playstore-lookup
                        Enable online lookups on Google Play

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Common usage

$ python androwarn.py -i my_application_to_be_analyzed.apk -r html -v 3

By default, the report is generated in the current folder.
An HTML report is now contained in a standalone file, CSS/JS resources are inlined.

Sample application
A sample application has been built, concentrating several malicious behaviours.
The APK is available in the _SampleApplication/bin/ folder and the HTML report is available in the _SampleReports folder.

Dependencies and installation

• Python 2.7 + androguard + jinja2 + play_scraper + argparse
• The easiest way to setup everything: pip install androwarn and then directly use $ androwarn
• Or git clone that repository and pip install -r requirements.txt

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Changelog

• version 1.5 - 2019/01/05: few fixes
• version 1.4 - 2019/01/04: code cleanup and use of the latest androguard version
• version 1.3 - 2018/12/30: few fixes
• version 1.2 - 2018/12/30: few fixes
• version 1.1 - 2018/12/29: fixing few bugs, removing Chilkat dependencies and pip packaging
• version 1.0 - from 2012 to 2013

Contributing
You're welcome, any help is appreciated 🙂

Contact

• Thomas Debize < tdebize at mail d0t com >
• Join #androwarn on Freenode

Greetings

• Stéphane Coulondre, for supervising my Final Year project
• Anthony Desnos, for his amazing Androguard project and his help through my Final Year project

Tagged with: analyzer • android • androwarn • another • applications • malicious • static