Digital Forensics

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Digital Forensics

What is it

Collecting, examining, analysing, and reporting digital/electronic evidence.

Hidden data

To view: Exiftool

Hex editors

Computer program that allows for manipulation of fundamental binary code

Reverse Engineering

Examining and fixing corrupt files

Collecting Evidence

Hashes

Screenshots

Network traffic

TCP/UDP

UDP: User datagram protocal

Common: video chatting, Onlinegaming

Fast

Data is sent without connection

TCP: Transmission control protocol

To setup a connect a handshake is preformed

2 or more computers communicating

Wireshark, tcpdumb

Bit by Bit image of drive

Capture system Images

Capture RAM

Wireshark

Recorded traffic in pcap files

protocol analyser/ network packet

Packet

Contains data & other important info : Directed IP address

Unit of data transfer over a network

Steganography

Concealing data withing other data

ASCII

Allows computer to transfer data easily

Most computers use ASCII for text

Code for representing 128 English character **Numbers**

Sources to examine

Deleted files

Metadata

Memory Images

Applications

Networks

Hardware & OS

Storage

Volatility

Memory most to least

Hard-drive

Files written to disk

Data stored in RAM

CPU cache/registers