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kiwamizamurai

mobile-security

by kiwamizamurai

CTF (Capture The Flag) learning workspace with writeups and solution scripts

1🍴 0📅 Jan 22, 2026

SKILL.md


name: mobile-security description: Reverses and exploits mobile applications. Use when working with Android APK files, iOS IPA files, mobile app reversing, Frida hooking, or app security analysis challenges. allowed-tools: Bash, Read, Write, Grep, Glob

Mobile Security Skill

Quick Workflow

Progress:
- [ ] Extract APK/IPA
- [ ] Decompile (jadx for Android)
- [ ] Search for hardcoded secrets
- [ ] Check native libraries
- [ ] Dynamic analysis with Frida if needed
- [ ] Extract flag

Quick Analysis Pipeline

# Android APK
file app.apk
apktool d app.apk -o extracted/
jadx app.apk -d output/
grep -r "flag\|secret" output/

# iOS IPA
unzip app.ipa -d extracted/
strings Payload/App.app/App | grep -i flag

Reference Files

TopicReference
Android APK Analysisreference/android.md
iOS IPA Analysisreference/ios.md
Frida & objectionreference/frida.md

Tools Summary

ToolPurposeInstall
jadxJava decompilergithub.com/skylot/jadx
apktoolAPK decode/rebuildapktool.org
FridaDynamic instrumentationpip install frida-tools
objectionRuntime explorationpip install objection
GhidraNative lib reversingghidra-sre.org
dex2jarDEX to JARgithub.com/pxb1988/dex2jar

CTF Quick Patterns

# Flag in resources
grep -r "flag\|ctf\|secret" extracted/res/

# Flag in native library
strings extracted/lib/*/*.so | grep -i flag

# Hardcoded secrets
grep -r "api_key\|secret\|password" output/

Score

Total Score

55/100

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0/15
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0/5
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+5
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