Supposing that we have a disk image with E01 or DD format etc. Is there any command to extracting specific file like system32.dll only from it ?
There are several ways to extract individual files from the image. You could e.g. mount the image, parse the MFT$ and then copy the sectors out of the file via dd. Alternatively you can use a Windows based tool, FTK Imager (free of charge)
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Due the Hard Failure I lost the separated photos. The I recovered them using image recovery. But now all the images are in one folder. Those images may be over 500 in the same one folder.
The images have customized names also.
The images are not in the same size also.
The images are not in same dimension also.
I am unable to cluster them and separate them in to a new folder as manually and time consuming. So, is there any online solution or software to automatically cluster them and move them into a folder?
For example :
Image set 1 :
Image set 2 :
Image set 3 :
In the above set of pictures, every image has the same background. So those images should be clustered as one and put them in a folder.
As like this, is there any solution or API level solution to simplify the manual works?
If they are JPEG images, you can try running jhead on them and it should be able to find the dates in the files. See jhead.
It can then rename the files based on the date for you, then you could separate them by their names/dates.
It may also tell you the GPS latitude/longitude, so you could move them to folders based on their proximity to each other.
Try the -v option to see the full information in a file:
jhead -v recovered123.jpg
Get the time information from the EXIF metadata.
Use this to automatically name and sort the images. Since you likely did not operate two cameras at two different events at the same time, this will work extremely well. Unlesw you managed to destroy this metadata.
In a Windows 8 Command Prompt, I had a backup drive plugged in and I navigated to my User directory. I executed the command:
copy Documents G:/Seagate_backup/Documents
What I assumed was that copy would create the Documents directory on my backup drive and then copy the contents of the C: Documents directory into it. That is not what happened!
I proceeded to wipe my hard-drive and re-install the operating system, thinking I had backed up the important files, only to find out that copy seemingly concatenated all the C: Documents files of different types (.doc, .pdf, .txt, etc) into one file called "Documents." This file is of course unreadable but opening it in Notepad reveals what happened. I can see some of my documents which were plain text throughout the massively long file.
How do I undo this!!? It's terrible because I was actually helping a friend and was so sure of myself but now this has happened. The only thing I can think of doing is searching for some common separator amongst the concatenated files and write some sort of script to split the file back apart. But then I would have to guess the extensions of each of the pieces...
Merging files together in the fashion that copy uses, discards important file system information such as file size and file name. While the file name may not be as important the size is. Both parameters are used by the OS to discriminate files.
This problem might sound familiar if you have damaged your file allocation table before and all files disappeared. In both cases, you will end up with a binary blob (be it an actual disk or something like your file which might resemble a disk image) that lacks any size and filename information.
Fortunately, this is where a lot of file system recovery tools can help. They are specialized in matching patterns. Specifically they are looking for giveaway clues to what type a file is of, where it starts and what it's size is.
This is for instance enabled by many file types having a set of magic numbers that are used to allow a program to check if a file really is of the type that the extension claims to be.
In principle it is possible to undo this process more or less well.
You will need to use data recovery tools or other analysis tools like binwalk to extract the concatenated binary blob. Essentially the same tools that are used to recover deleted files should be able to extract your documents again. Without any filename of course. I recommend renaming the file to a disk image (.img) and either mounting it from within the operating system as a virtual harddisk (don't worry that it has no file system - it should show up as an unformatted drive) or directly using a data recovery tool or analysis tool which can read binary files (binwalk, for instance, can do that directly, but may not find all types of files as it's mainly for unpacking firmware images that may be assembled in the same or a similar way to how your files ended up).
I have prepared uImage of the kernel; now I want to unpack the root filesystem image from it. How can I do that?
Binwalk http://binwalk.org is cool to extract images. To automate this process I analyse image with binwalk to get offsets of contained images. After write script with dd or python. This script extracts offset fron file, after cuts to parts.
I'm interested in validating medical image files of certain formats. When I say validate I mean make sure they are indeed files of that kind and not, say, some malware disguised as a file. So for example if someone has a file virus.exe and they changed it into virus.dcm I'd like to be able to tell it's not a legit .dcm file
I've seen an answer for validating dicom files that says I should look at offset 0x80 for a certain label. But I'm not sure if it's possible for someone to insert that label into virus.dcm.
The file types I want to validate are DICOM files (.dcm, .PAR/.REC), NIFTI files (.nii, .nii.gz), ANALYZE files (.img/.hdr), and .zip files
I'm not looking for code per se (though that would be nice), but I'd like to know what's the best way to distinguish legitimate files of these types from malware files that have been changed to look like these files.
Validating a dicom file is quite difficult: the problem is that the DICOM standard allows for the first 128 bytes of the file to contain absolutely anything (including executable code). After the first 128 bytes there is the DICM signature (offset 0x80).
So, even if you manage to open the DICOM file and see a valid image and tags in a DICOM viewer, the file could still contain executable code in the first 128 bytes (it would probably contain pointers to some portions at the end of the DICOM data).
I suggest to mark all the DICOM files as non-executable using chmod on Linux or this suggestion on Windows
I have a binary file that starts off with some data. After this data, the file has a JPEG image embedded in it. After the image, the file continues with some other data. I wish to use the image as an OpenGL texture.
At the moment, the only method I know of creating an OpenGL texture with Magick is to read the image file with Magick, write it into a blob, and upload the blob.data() to opengl (from this link: http://www.imagemagick.org/pipermail/magick-developers/2005-July/002276.html).
I am trying to use Magick++, but it only allows me to specify a filename, not a C-style filehandle or filestream...Are my only options the following? :
Save the JPEG image portion in the binary file as a separate temporary file and get Magick++ to read that image. I don't wish to do this as writing to disk will slow my program down.
Read the image portion into an array, create a Blob with the array as its data, and then read the Blob to obtain an image. I don't wish to do this either because after I get the image, I will need to again write the image data to another blob, and the entire code becomes unnecessarily long.
Switch to another library like DevIL, which offers support for what I want. Unfortunately, DevIL is not as feature rich as Magick.
I also looked into the core C API for Magick, where I can specify a filehandle, but the documentation says that the filehandle is closed by Magick after the image is read, which is definitely not good for my program (it is going to be pretty ugly to get the rest of my program to reopen the binary file to continue its processing...
If there is a way to provide Magick with custom I/O routines, or better still, a cleaner way of using Magick with OpenGL, please enlighten me!
The next release of GraphicsMagick does not close the input file handle after the image is read. You can try the latest development snapshot.
You could consider using mmap() (memory mapped file) to access the data and treat it as an in-memory BLOB using Magick++. The main issue with this is you might not know how long the data was in case you need to access data following the embedded JPEG image data.
It is trivial to add FILE* support to Magick++. The only reason I did not do so was for philosophical reasons (C++ vs C).