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Search and Retrieve – "HANDS ON"

COURSE OVERVIEW

We are becoming more and more detached from the data that lies in our systems. For the most part this is a good thing, allowing us to concentrate on organisation and process. However, when we need to probe more deeply because we suspect abuse, error or fraud, we instantly see the inadequacy of simple search commands and application packaged report generators for digging out evidence. This course provides a stimulating “hands-on” introduction to the search and retrieval of data from systems using low or zero cost software tools.

COURSE BENEFITS

Skills:

After completion of this course, you will be able to:

  • Assemble a toolkit of valuable search and retrieve utilities at low or zero cost

  • Fingerprint and perform a high level review of hosts under review

  • Deploy effective strategies for cataloguing structures and finding data at directory, file and sector levels whether in numeric, text or hex form

  • Explore the possibilities of recovering lost damaged or corrupted files, passwords and other important data

  • Use tools for: locating images within systems; tracking down numerical inconsistencies within data and spreadsheets; extracting data from databases; and resolving IP addresses and exploring email headers

  • Discriminate between reliable and unreliable information, consolidate findings and report on observations

Support Materials:

This course will be accompanied by a training manual containing briefing materials, examples and practical advice. A CD ROM of software for personal use will also be provided.

WHO SHOULD ATTEND

Those from the domains of IT Audit and IT Security will find this course of greatest practical benefit. The course uses a combination of briefings and interactive case study work to maximise knowledge transfer. Class size is limited.

COURSE Programme

The fundamental processes

  • Forensic interest or data extraction interest?

  • Searching computer systems and files – caveats

Assembling a toolkit

  • Low or zero cost tools – the incentive

  • Example tools: data and file searching; host fingerprinting; image searching, high and low level scanning; password, crypto tools and more

Practical 1: a high level pass

  • Reviewing systems and media and assessing their attributes

  • Cataloguing the system – eliminating possibilities

  • Examination of cache files and system information: browser histories, cookie libraries, licences, auto-start programs, installed programs, services

Practical 2: search and retrieve – simple

  • Basic – searching by types and categories of data

  • Data attributes – non invasive viewing, what they reveal

  • Sectors, filing systems and how files are stored

  • File attributes – low level viewing of files as hex and as text; why look at hex?

  • Search hex – search text

  • Occurrence and frequency analysis

  • Keeping results – documenting as you go

Practical 3: search and retrieve – complex

  • Locating text hidden in files – complex searches

  • Locating text using fast sector scanning

  • Different numbering systems integer, floating point, ASCII, EBCDIC

  • Boot sectors and indexing tables

  • Closing in on the subject of searching

  • Comparing files and text

  • Hashes and calculating hashes

  • Elimination and identification of files using hashing

  • Disk and file cloning – exact copies

Practical 4: recovery of deleted files

  • Deliberately concealed data and evidence erasers

  • Recovering deleted files

  • Recovering passwords and identities

Practical 5: image processing

  • Simple and multi-format image viewers

  • Searching for images

  • Hidden images – email inclusions

  • Hidden images – file inclusions

  • Steganography and data recovery

Practical 6: network and email

  • IP Headers and meaningful information

  • IP Header analysis

  • IP address tracing

  • Email content searching

Practical 7: numerical tools and other techniques

  • Style analysis – concordance and correlation

  • Benford’s Law and dodgy digit handling

  • Digging about in spreadsheets

  • Panning for gold in databases

Presenting data

  • Fuzzy Time

  • Authenticity

  • Log tampering, corruption and data loss

Bringing it all together

  • Reporting back on findings

  • Keeping your knowledge up to date

PRESENTED BY:
This course is designed, developed and presented by MindGrove Ltd.


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To discuss bringing this course in-house, please complete our on-line Enquiry Form or call us on 01925 732 757.

Copyright 2008 MindGrove Ltd.

Call us on +44 (0)1925 732 757

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