analyzing-android-malware-with-apktool

name	analyzing-android-malware-with-apktool
description	Perform static analysis of Android APK malware samples using apktool for decompilation, jadx for Java source recovery, and androguard for permission analysis, manifest inspection, and suspicious API call detection.
domain	cybersecurity
subdomain	malware-analysis
tags	["Android","APK","apktool","jadx","androguard","mobile-malware","static-analysis","reverse-engineering"]
version	1.0
author	mahipal
license	Apache-2.0
nist_csf	["DE.AE-02","RS.AN-03","ID.RA-01","DE.CM-01"]
mitre_attack	["T1406","T1407","T1626.001","T1655.001","T1521.001"]
source	https://github.com/mukul975/Anthropic-Cybersecurity-Skills
source_commit	04450304b12645cb2b974ab96d28c0664758a88d

Analyzing Android Malware with Apktool

Overview

Android malware distributed as APK files can be statically analyzed to extract permissions, activities, services, broadcast receivers, and suspicious API calls without executing the sample. This skill uses androguard for programmatic APK analysis, identifying dangerous permission combinations, obfuscated code patterns, dynamic code loading, reflection-based API calls, and network communication indicators.

When to Use

• When investigating security incidents that require analyzing android malware with apktool
• When building detection rules or threat hunting queries for this domain
• When SOC analysts need structured procedures for this analysis type
• When validating security monitoring coverage for related attack techniques

Prerequisites

• Python 3.9+ with androguard
• apktool (for resource decompilation)
• jadx (for Java source recovery, optional)
• Isolated analysis environment (VM or sandbox)
• Sample APK files for analysis

Steps

1. Parse APK with androguard to extract manifest metadata
2. Enumerate requested permissions and flag dangerous combinations
3. List activities, services, receivers, and providers from manifest
4. Scan for suspicious API calls (reflection, crypto, SMS, telephony)
5. Detect dynamic code loading patterns (DexClassLoader, Runtime.exec)
6. Extract hardcoded URLs, IPs, and C2 indicators from strings
7. Generate risk assessment report with MITRE ATT&CK mobile mappings

Expected Output

• JSON report with permission analysis, component listing, suspicious API calls, network indicators, and risk score
• Extracted strings and potential IOCs from the APK