Manually Recovering Files Complete the table below for ALL files. I’ve provided
ID: 668123 • Letter: M
Question
Manually Recovering Files
Complete the table below for ALL files. I’ve provided info for one of the files.
Next, use the information in the table to recover ALL files in unallocated space. You’ll can copy and paste the commands you used below the second table.
Tools:
Using any Linux or Windows
xxd, dd, and 4860.2.2015.dd (sha1 = 315fc97827005d4d34d27891388a7c295b2ea2b5)
Use the associated image 4860.2.2015.dd and answer the questions below:
https://www.dropbox.com/s/15n5qsmz4s1h7up/4860.2.2015.dd?dl=0
This link below is what's in the link above, the only difference is that I've extracted the .dd file just in case"
https://www.dropbox.com/s/zuh37kjcs8angq8/files.zip?dl=0
Note: Not all rows will be used. Use the root directory to identify the number of files.
File name
Deleted? (Y/N)
File Size (hex)
File Size
(decimal)
Start sector (hex) as displayed in root d.
Byte swapped start sector (hex)
Start sector (decimal)
Start BYTE (dec)
File2.png
N
2538F
152463
1301
113
306
156672
File name
Type of file
Sha1 hash
File2.png
Portable Network Graphics (png)
74fde2180dfb04b16c31e9e85dd0dd41f38b97fe
Below show the commands you used to recover each file (you may copy and paste from your VM).
1.
2.
3.
4.
5.
6.
Hints:
- Examples of how to calculate values for file5.txt:
- In the root directory the file starting cluster is given as 6902.
- We must byte swap to get actual (hex) starting cluster: x6902 -> x269
- Change that to decimal: x269->617. Use your programmer’s calculator to do this.
- Now we need to add 31 as the indicated starting cluster doesn’t count the 31 reserved sectors, so 617+31 = 648. That’s the actual number of 512 byte clusters.
- Each cluster is 512 bytes, so multiply 648 by 512: 548x512= 331776. That’s you ‘skip’ number.
- Now convert that to hex: 331776 -> x51000 (only need this if you’d like to find the start of the file in xxd)
- The file size is given as x1700 000. Byte swapping that only gives us x17.
- Convert x17 to decimal: x17->23. That’s your count.
File name
Deleted? (Y/N)
File Size (hex)
File Size
(decimal)
Start sector (hex) as displayed in root d.
Byte swapped start sector (hex)
Start sector (decimal)
Start BYTE (dec)
File2.png
N
2538F
152463
1301
113
306
156672
Explanation / Answer
1)
Your Recycle Bin may also appear empty if any of the files within it are damaged. In this case, you probably won’t be able to recover the contents of the Recycle Bin, but you can make it function correctly again by doing the following:
CD RECYCLED
ATTRIB -H DESKTOP.INI
COPY DESKTOP.INI
DEL *.*
COPY DESKTOP.INI
DEL DESKTOP.INI
EXIT
2)
If the Desktop.ini file is damaged or missing, you can get the Recycle Bin back up and running correctly by creating a new Desktop.ini file within the Recycled folder:
[.ShellClassInfo]
CLSID={645FF040-5081-101B-9F08-00AA002F954E}
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