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Carve files for MFT entries (eg. blkls output or memory dumps). Recovers filenames (long & short), timestamps ($STD & $FN) and data if resident. It will also parse half broken entries as long as at least one $FN entry is ok.

cyb3rfox/MFTEntryCarver

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MFTEntryCarver

Carve files for MFT entries (eg. blkls output or memory dumps). Recovers filenames (long & short), timestamps ($STD & $FN) and data if resident. It will also parse half broken entries as long as at least one $FN entry is ok. There is a more detailed description of how and why I wrote that and how you can use it on my blog (https://www.cyberfox.blog/carving-mft-mftentrycarver-py/). I'm not really a developer but just an DFIR guy. So please excuse the spaghetti code.

MFT

NTFS stores it's metadata in the $MFT file which references itself in MFT record number 0. MFT records are well defined as described here (http://www.cse.scu.edu/~tschwarz/coen252_07Fall/Lectures/NTFS.html) Obviously it's growing over time. When one deletes a file, corresponding entry will be marked as free but the entry data remains there until it's overwritten. Generally that implies, that it is still inside the addressed space of $MFT. However experimenting a little bit with unallocated space on a test Windows 7 system image showed, that scanning for NTFS Entry headers (FILE) showed over 50.000 results in a 8Gb junk of unallocated space. I don't really know how those entries end up there but I guess it's a combination of various causes. Some of them might be comming when parts of memory are ending uop on the drive in files like crashdumps and then the files are being deleted.

How to get unallocated space

I used Sleuthkit's blkls to get the unallocated blocks of an image.

License

This code is distributed under MIT License

Copyright (c) 2018 Mathias Fuchs

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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Carve files for MFT entries (eg. blkls output or memory dumps). Recovers filenames (long & short), timestamps ($STD & $FN) and data if resident. It will also parse half broken entries as long as at least one $FN entry is ok.

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