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mobile-hacking.md

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Mobile hacking

Motivations

  • Surveillance: • Audio • Camera • Call logs • Location • SMS messages
  • Financial: • sending high rate SMS • stealing transaction authentication numbers (TANs) • extortion via ransomware • fake antivirus • making expensive calls
  • Data theft: • Account details • Contacts • Call logs • phone number • stealing IMEI
  • Botnet activity: • launching DDoS attacks • click fraud • sending SMS
  • Impersonation: • SMS redirection, sending e-mail messages, posting to social media

Attack vectors

  • Malware
  • Data exfiltration
  • Data tampering
  • Data loss

Vulnerabilities and risks

  • Malicious apps in stores
  • Mobile malware
  • App sandboxing vulnerabilities
  • Weak device and app encryption
  • OS and app update issues
  • Jailbreaking and rooting
  • Mobile application vulnerabilities
  • Privacy issues (Geolocation)
  • Weak data security
  • Excessive permissions
  • Weak communication security
  • Physical attacks
  • Insufficient code obfuscation
  • Insufficient transport layer security
  • Insufficient session expiration

Security issues from App Stores

  • Used to distribute malware/malicious apps
  • App: Software that runs on mobile devices
  • App Store: Distribution platform
    • Can be from owners of the OS e.g. Apple, Google play, Microsoft.
    • Or third parties e.g. Amazon Appstore, GetJar, and APKMirror.
  • Can be distributed through
    • legitimate app stores
      • because of insufficient or no vetting of apps
    • unofficial app stores
      • user is social engineered to download and execute

Sandboxing

  • App sandboxing
    • Limits resources available to an app
    • Isolates one from another
    • ❗ A vulnerable one can still be exploited

Mobile spam

  • Also known as SMS spam, text spam, or m-spam
  • Advertisements or malicious links
  • E.g. you've won a prize, click here to claim it.

SMiShing

  • SMS phishing
  • Acquire personal information through SMS with malicious links
  • Effective as
    • Easy through e.g. using prepaid SMS card using fake identity
    • Usually not checked by antiviruses
    • Users are not familiar
  • E.g. "PayPal - your account has been locked"

Pairing