Offensive security assessments

Mobile

We validate this area during scoped assessments, documenting impact and remediation guidance.

Why it matters

- [ ] Establish a controlled and secure forensic environment. - [ ] Document the case background, scope, and objectives. - [ ] Ensure all forensic tools are up-to-date and compatible with the mobile OS being examined. - [ ] Verify that all necessary legal permissions and authorizations are in place.

How we test it

Our operators follow a structured checklist for this topic, adapted to your API surface and authentication model.

Testing approach

  • Safely power off the mobile device to preserve its state.
  • Use a write-blocker or equivalent device to prevent any write actions to the device.
  • Create a forensic image (logical or physical) of the mobile device.
  • Verify the integrity of the acquired image using checksums (e.g., MD5, SHA256).
  • Analyze the file system structure to identify relevant files and directories.
  • Examine system logs and artifacts for evidence of user activities.
  • Retrieve call logs, SMS/MMS messages, and contacts.
  • Check for installed applications and their associated data.

What we look for

  • Safely power off the mobile device to preserve its state.
  • Use a write-blocker or equivalent device to prevent any write actions to the device.
  • Create a forensic image (logical or physical) of the mobile device.
  • Verify the integrity of the acquired image using checksums (e.g., MD5, SHA256).
  • Analyze the file system structure to identify relevant files and directories.
  • Examine system logs and artifacts for evidence of user activities.
  • Retrieve call logs, SMS/MMS messages, and contacts.
  • Check for installed applications and their associated data.

Engagement checklist

Items we validate during scoping and execution for this topic.

Pre-Investigation

  • Establish a controlled and secure forensic environment.
  • Document the case background, scope, and objectives.
  • Ensure all forensic tools are up-to-date and compatible with the mobile OS being examined.
  • Verify that all necessary legal permissions and authorizations are in place.

Device Acquisition

  • Safely power off the mobile device to preserve its state.
  • Use a write-blocker or equivalent device to prevent any write actions to the device.
  • Create a forensic image (logical or physical) of the mobile device.
  • Verify the integrity of the acquired image using checksums (e.g., MD5, SHA256).

Examination of Evidence

  • Analyze the file system structure to identify relevant files and directories.
  • Examine system logs and artifacts for evidence of user activities.
  • Retrieve call logs, SMS/MMS messages, and contacts.
  • Check for installed applications and their associated data.
  • Examine browser history, cache, and cookies.
  • Extract geolocation data and Wi-Fi connection history.
  • Recover deleted files and artifacts, if necessary.
  • Collect information about device settings, accounts, and connected networks.

Timeline Analysis

  • Create a timeline of events and activities on the mobile device.
  • Correlate events from different sources to establish a chronological sequence.
  • Identify patterns or anomalies in user interactions.

Messaging App Analysis

  • Extract data from popular messaging apps (WhatsApp, Signal, Telegram, etc.).
  • Analyze chat conversations, attachments, and call logs.
  • Recover deleted messages if possible.

Multimedia Analysis

  • Examine photos, videos, and audio files for evidence.
  • Extract metadata (timestamps, GPS coordinates, camera details).
  • Identify tampering or manipulation of multimedia files.
  • Check for hidden or encrypted files and folders.

Social Media and Cloud Data

  • Investigate cloud backups and synced data (e.g., iCloud, Google Drive).
  • Access and analyze social media accounts and activities.
  • Examine email accounts and associated communication.

Data Recovery

  • Use advanced data recovery techniques to retrieve deleted data.
  • Handle encryption and decryption processes for secured data.
  • Ensure data recovery does not alter or damage the original evidence.

Reporting and Documentation

  • Create a comprehensive forensic report detailing findings, analysis, and conclusions.
  • Document the forensic process, including acquisition, examination, and analysis steps.
  • Include all relevant artifacts, logs, and extracted evidence in the report.
  • Ensure the report is clear, concise, and well-organized.

Preservation of Evidence

  • Store all forensic evidence securely to prevent tampering or loss.
  • Maintain a record of who has accessed the evidence and for what purpose.
  • Comply with legal and ethical guidelines for evidence preservation.

Legal Considerations

  • Adhere to legal requirements and obtain necessary permissions for the investigation.
  • Consult with legal counsel if required for handling sensitive cases.

Related topics

TopicSummary
Digital Forensics FundamentalsDigital forensics (DFIR) is the practice of acquiring, preserving, and analysing
WindowsWe validate this area during scoped assessments, documenting impact and remediation guidance.