Evaluating A Selection of Tools for Extraction of Forensic Data: Disk ...

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3.9. TC-02-HFS+ Test Case TC-02-HFS+ (AIR 2.0.0) Test & Case Summary: AIR 2.0.0 (Release Date: 17th, Feb 2010) Acquire a digital source that supported by the tools to an image file Notes: Acquire Mac partition type HFS+ partition only Assertion: AFR-01 The tool accesses the digital source with a supported access interface AFR-02 The tool acquires a digital source AFR-03 The tool operates in an execution environment AFR-04 The tool creates an image file of the digital source AFR-05 The tool acquires all the visible data sectors from the digital source AFR-07 All data sectors acquired from the digital source are acquired accurately. AIC-01 The data represented by an image file is the same as the data acquired by the tool AIC-05 If multi-file image creation and the image file size is selected, the tool creates a multi-file image except that one file may be smaller ALOG-01 If the tool logs any information regarding to the acquisition, the information is accurately logged in the log file. ALOG-02 The tool display correct information about the acquisition to the user. ALOG-03 The tool display correct information regarding to the acquisition to the user and the information displayed is Source Device: Drive Setup: Partition Table: Log highlights: consistent with the log file if the log file function is supported Drive Model: ST380817AS (80GB) Serial Number: 5MR18V18 Sector count: 156,301,488 Write blocker: Tableau Forensic SATA/IDE Bridge IEEE 1394 SBP2 Device Source hashes md5: 5781d0f597685d4eff4cc3423900d73a sha1: e878400c062b1690b586be41523d303edf3eae52 /dev/sda: current max LBA: 156,301,488 /dev/sda: native max LBA: 156,301,488 /dev/sda: physical max LBA: 156,301,488 /dev/sda: HPA not set /dev/sda: DCO not set Device Start End #sectors File System Size /dev/sdb1 4096 4198399 4194304 HFS 2Gb /dev/sdb2 4198400 14999551 10801152 HFS+ 5Gb Unallocated Start DC3DD (md5 sha1): Fri Oct 1 10:11:33 NZDT 2010 command line: dc3dd hash=md5,sha1 hashlog=/tmp/hash.log status=noxfer if=/dev/sda3 skip=0 conv=noerror,sync iflag=direct ibs=32768 compiled options: DEFAULT_BLOCKSIZE=32768 sector size: 512 (assumed) md5 TOTAL: 5781d0f597685d4eff4cc3423900d73a 267
Results by assertion: AIR 2.0.0 (Release Date: 17th, Feb 2010) sha1 TOTAL: e878400c062b1690b586be41523d303edf3eae52 10801152+0 sectors in 10801152+0 sectors out Command completed: Fri Oct 1 10:15:47 NZDT 2010 Start VERIFY: Fri Oct 1 10:15:47 NZDT 2010 cat /mnt/new/Image/AIR_HFSplus.* | air-counter 2>> /usr/local/share/air/logs/air.buffer.data | dc3dd hash=md5,sha1 hashlog=/tmp/verify_hash.log status=noxfer of=/dev/null VERIFY SUCCESSFUL: Hashes match Orig = md5 TOTAL: 5781d0f597685d4eff4cc3423900d73a sha1 TOTAL: e878400c062b1690b586be41523d303edf3eae52 Copy = md5 TOTAL: 5781d0f597685d4eff4cc3423900d73a sha1 TOTAL: e878400c062b1690b586be41523d303edf3eae52 Command completed: Fri Oct 1 10:19:59 NZDT 2010 AFR-01 PASSED AIC-01 PASSED AFR-02 PASSED AIC-05 PASSED AFR-03 PASSED ALOG-01 PASSED AFR-04 PASSED ALOG-02 PASSED AFR-05 PASSED ALOG-03 PASSED AFR-07 PASSED Analysis: Test achieved the expected Result. Source hashes match verification hashes. 3.10. TC-03-HPA Test Case TC-03-HPA (AIR 2.0.0) Test & Case Summary: Acquire a hard drive with hidden sectors to an image file Notes: HPA active Assertion: AFR-01 The tool accesses the digital source with a supported access interface AFR-02 The tool acquires a digital source AFR-03 The tool operates in an execution environment AFR-04 The tool creates an image file of the digital source AFR-05 The tool acquires all the visible data sectors from the digital source AFR-06 The tool acquires all the hidden data sectors from the digital source AFR-07 All data sectors acquired from the digital source are acquired accurately. AIC-01 The data represented by an image file is the same as the data acquired by the tool AIC-02 The tool creates an image file according to the file format the user specified. AIC-05 If multi-file image creation and the image file size is selected, the tool creates a multi-file image except that one file may be smaller AIC-06 If the image file integrity check is selected, the tool shall report to the user the image file has not been changed if the image file has not been changed. AIC-07 If the image file integrity check is selected, the tool shall report to the user the AIC-08 ALOG- 01 ALOG- 02 image file has been changed if the image file has been changed. If the image file integrity check is selected, the tool shall report to the user the image file has been changed and the involved location if the image file has been changed. If the tool logs any information regarding to the acquisition, the information is accurately logged in the log file. The tool display correct information about the acquisition to the user. The information about the acquisition at least including following: device, start sector, end sector, type and number of errors encountered, and start time and end time of acquisition. 268
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Evaluating A Selection of Tools for
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Acknowledgements This thesis has be
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imaging data when building disk ima
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2.3.3.1 dcfldd ....................
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4.3 Research Analysis .............
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List of Tables Table 2.1: Existing
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AI Access Interface AM Access Metho
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SWGDE Scientific Working Group on D
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NetIntercept Network monitoring and
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The aim of this chapter is to provi
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producing unreliable results. Extra
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1.4 CONCLUSION Chapter 1 is concern
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forensic software EnCase and Sleuth
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2.1.2 Investigative Processes And S
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Preparation Collection Examination
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13 Investigative Process Model (Fre
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eaders to have better understanding
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text or hexadecimal format (Adopted
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3. Duplicability and Modifiability
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oth original and duplicate copy of
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Apache web server and Microsoft Int
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forensic tools, process or procedur
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Guo et al. (2009) have proposed a f
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Table 2.4 Mandatory features of Dis
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2.3.3.2 dc3dd Dc3dd is another enha
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area to backup their Proprietary so
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Also, MBR disks only support four p
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Table 2.6 Functionalities of Disk I
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for digital investigation to identi
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studies and discussions, the requir
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answered. Details of data collectio
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experts will be used to narrow down
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anomalies are analysed to identify
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esulting acceptance spectrum can be
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Figure 3.5. Process of evaluation c
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Stage 1 Understand the discipline o
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Testing requirements Selected disk
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Phase 1 Select the software disk im
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connected to the computer using a P
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When the acquired images are saved
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3.4.3 Data Analysis Methods GA is a
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There are many other types of hardw
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Main Research Question Sub Question
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4.1 VARIARTIONS IN RESEARCH SPECIFI
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4.2.1 Testing Environment Two execu
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Using program HDAT2, HPA and DCO ar
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4.2.2.3 TC-03: Acquiring A Hard Dri
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Table 4.7 TC-06 Result Summary Test
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FTK Imager successfully verified th
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Assertions AHS01-03 AFR01-03 AFR01-
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Helix 3 pro was unable to recover t
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Helix 3 Pro was not able to read th
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The method of data analysis is desc
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4.4 PRESENTATION OF FINDINGS A summ
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Pass Rates (%) 100.00% 90.00% 80.00
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Pass Rate (%) 100.00% 90.00% 80.00%
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5.0 INTRODUCTION Chapter 5 Discussi
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tools. For instance, the test case
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their latest FTK Imager release not
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information of the total number of
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Helix 3 Pro presented some usabilit
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Software support is minimum and the
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2.2.4, forensic software validation
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elease version mounts file systems
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and TC-18, AIR has outperformed oth
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6.0 INTRODUCTION Chapter 6 Conclusi
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inconsistent with what is stated in
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eginning of and the end of the disk
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6.4 CONCLUSION The main objective o
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Beebe, N. L., & Clark, J. G. (2005)
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Erbacher, R. F. (2010). Validation
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Kunda, D., & Brooks, L. (1999). App
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Payne, C. (2002). On the Security o
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Smith, R. (2009). Make the most of
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Cases Daubert v. Merrell Dow Pharma
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Appendix 2 - Testing requirements 1
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06 format should contain same data
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Test Cases Description Assertions f
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Assertions for Fundamental Requirem
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TSP-AIC-10 TSP-AIC-11 image file fo
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4.1 Drive Reset (Common in most Tes
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This procedure outlines the process
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7. Keep setting “noerror, sync”
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Appendix 6 - Gap Analysis Matrix 15
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Image Creation (IC) Function Requir
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Appendix 7 - Disk Imaging Tools Tes
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FTK Imager 2.9.0.1385 (Release Date
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Source Device: Drive Setup: Log hig
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Log highlights: Results by assertio
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1.6 TC-02-FAT16 FTK Imager 2.9.0.13
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Source Device: Drive Setup: Partiti
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1.10 TC-02-HFS+ FTK Imager 2.9.0.13
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1.12 TC-03-DCO FTK Imager 2.9.0.138
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1.13 TC-05-DD FTK Imager 2.9.0.1385
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1.14 TC-05-Smart FTK Imager 2.9.0.1
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Drive Setup: Log highlights: Result
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Results by assertion: FTK Imager 2.
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1.19 TC-10-CorruptImage FTK Imager
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1.21 TC-11-E01_Smart FTK Imager 2.9
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1.25 TC-11-Smart_E01 FTK Imager 2.9
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Results by assertion: verified FTK
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Helix3 Pro R3 (Release Date: 30 th
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Results by assertion: Helix3 Pro R3
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2.3. TC-02-NTFS Helix3 Pro R3 (Rele
Page 233 and 234: Source Device: Drive Setup: Partiti
Page 235 and 236: Device: Serial Number: 6PS2CA4Z Sec
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Page 241 and 242: Results by assertion: Helix3 Pro R3
Page 245 and 246: 2.11. TC-03-DCO Helix3 Pro R3 (Rele
Page 247 and 248: 2.12. TC-05-EnCase6 Helix3 Pro R3 (
Page 249 and 250: 2.13. TC-06-UNC Helix3 Pro R3 (Rele
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Page 253 and 254: Helix3 Pro R3 (Release Date: 30 th
Page 265 and 266: Drive Setup: Partition Table (GPT d
Page 269 and 270: AIR 2.0.0 (Release Date: 17th, Feb
Page 273 and 274: 3.3. TC-02-NTFS Test Case TC-02-NTF
Page 275 and 276: 3.4. TC-02-Ext2 AIR 2.0.0 (Release
Page 277 and 278: 3.5. TC-02-Ext3 AIR 2.0.0 (Release
Page 279 and 280: 3.6. TC-02-FAT16 Test Case TC-02-FA
Page 283: Source Device: Drive Setup: Partiti
Page 295 and 296: Results by assertion: AIR 2.0.0 (Re
Page 299 and 300: 3.17. TC-13 Overlapping Partitions
Page 301 and 302: Partition Table: Log highlights: Re
Page 305 and 306: 3.21. TC-16-02 Acquire a GPT disk A
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