Notes - MCS
Computer Systems Forensic Analysis
Notes - MCS
Computer Systems Forensic Analysis
  • Computer Systems Forensic Analysis
  • Overview of Cybercrime
    • Cyberspace
    • Information Security Principles
    • Cybercrime vs. Computer Crime
    • Cybercrime slang
      • Images
    • Digital Evidence
  • Introduction to Digital Forensics
    • Concepts
    • Digital Forensic
    • Digital Investigation
    • Digital Crime Scene Investigation Methodology
    • Digital Evidence Handling
    • Ethical Code
  • Obtaining Evidences
    • Introduction
    • Boot Process
    • Secuere Boot Process
    • Windows Boot Process
    • Forensic Boot Tools
    • Bootable CD-ROMS - Linux Based
    • ADS
    • Forensic Sorting Tools
    • Forensic Acquisition
    • Dealing With Media Errors
    • Hidden Areas
    • Write Protection of Evidence Media
    • Storing Acquired Data
    • Image File Acquisition
    • Hash Values
  • Data Organization
    • Data Organization
    • File System
    • File Content
    • Endianness
    • Character Encoding
    • Data Structures
    • Date and Time
    • Encoding
  • Storage Devices
    • BIOS versus direct access
    • Hard Disk Geometry
    • Advanced Technology Attachment Interface
      • Device Configuration Overlay
    • Small Computer Systems Interface
    • NAND Flash memory
    • Level wearing
    • HDD vs SSD
    • Pen USB vs SSD Comparison
    • SSD Connectors, Interfaces, and Transfer Protocols
  • Volumes and Partitions
    • Concepts
    • Partition Tables
    • Sectors Addresses
    • Logical addresses
    • Volume Analysis
    • Types of Partition Tables
    • Common Partition Tables (MBR)
    • Boot Code
    • MBR examination
    • Removable Storage
    • Common Partition Tables (GPT)
    • Common Partition Tables (BSD)
    • Volumes’ Aggregation
  • RAM Analysis
    • RAM Analysis
    • General Computer Architecture
    • DMA – Direct Memory Access
    • Paging
    • Memory Acquisition
  • Mobile Forensics
    • Forensic value of phones
    • International Mobile Equipment Identifier
    • Potential Evidence
    • Forensics Dangers
    • Data Acquisition
    • Logical acquisition
    • Physical acquisition
    • Hashing
    • Software tools
  • Open Source INTelligence
    • Classical sources of information and intelligence
    • Evolution of OSINT - Open Sources Intelligence
    • Information sources
    • Closed source of information
    • Open sources
    • Information to Intelligence Cycle
    • Skills of the Analyst
    • Open Source Possibilities
    • Automated Processing
    • DarkNet
  • Documentation and Reporting
    • Introduction
    • Physical examination
    • Examining a computer
    • Media Examination
    • Examples of things to write in the report
    • Forensic Report
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  1. Mobile Forensics

Forensics Dangers

Some feature phones only work with a SIM card inserted.

However, if the handset detects that the SIM card has changed (based on IMSI, ICCID, or both) it could potentially delete the call register entries.

Solution:

  • when available, clone SIM card ICCID and IMSI (requires special equipment).

    • SIM with cloned ICCID and IMSI cannot connect to the cell network.

SIM card security.

  • PIN (personal identification number) - if the PIN is enabled and entered incorrectly 3 times in a row, the SIM card will be blocked.

  • PUK (PIN unlock key) - if PUK is entered 10 times incorrectly, the SIM card will become permanently blocked and unrecoverable.

    • PUK is a SIM-specific code assigned by the service provider.

    • cannot be changed by the user.

Without the PIN.

  • only ICCID can be read from the SIM card.

  • with the ICCID ask the service provider for the PUK -> requires legal procedures.

Mobile Station International Subscriber Directory Number (MSISDN)

SIM cards can store one or more phone numbers (MSISDNs), but entries are unreliable:

  • the number may never have been used.

  • the MSISDN may have been ported over from a previous SIM.

  • in older handsets, the number may be missing or edited by the owner.

  • MSISDN must be confirmed with the service provider.

Last updated 1 year ago