| 3-Day instructor led course focused on systematic and efficient examination of computer media using X-Ways Forensics. PLUS 2-Day Instructor led course focused on file systems using X-Ways Forensics.
Extensive introduction to the file systems FAT12, FAT16, FAT32 (1/2 day), NTFS (1 day), and Ext2/Ext3 (1/2 day). By fully understanding the on-disk structures of the file system, you are able to recover data manually in many severe data loss scenarios, where automated recovery software fails, and to verify the correct function of computer forensics software and to collect meta information beyond what is reported automatically, which might yield clues for the given case. In general, this also leads to a better understanding of the data presented by forensic software, of how computer forensics software works and of its limitations. | |
| Immediate application of newly gained knowledge by examining data structures on a practical example with WinHex. These exercises will ensure you will remember what you have learned. By the end you will be able to navigate almost intuitively on a hard disk and to identify various sources of information with relevance to forensics. You will be enabled to recover data manually in several cases even where automated software fails and to verify the results computer forensics software reports automatically. You will receive a complete documentation of all the filesystems discussed in this course, with all the training material for later repetition. Prerequisite: general computer science knowledge recommended (not just computer knowledge).
Selected topics: Basics:
Binary data storage concepts
Data types
Date formats
FAT:
Structure of FAT file systems
Boot record
File Allocation Table (FAT)
Directory entries
NTFS:
Boot sector
Master File Table (MFT)
FILE records structure
FILE record attributes
Data runs
Data compression
Attribute lists
Directory organisation in NTFS
INDX record structure
NTFS system files
Consistency in NTFS
Alternate data streams
Encrypting File System: NTFS encryption
Ext2/Ext3/Ext4:
Structure of Ext file systems
Superblocks, group descriptors, block groups, bitmap blocks
Inodes
Concept of block addressing
Concept of directory structure
Effects of file deletion
Specialties of Ext4
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