Difference between revisions of "File Carving"

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'''File carving''' is the practice of searching an input for files based on the input's content.  Most often the input is a [[disk image]], but it's possible (and sometimes practical) to carve individual files or [[physical memory]].
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'''Carving''' is the practice of searching an input for files based on the input's content.  Most often the input is a [[disk image]], but it's possible (and sometimes practical) to carve individual files or [[physical memory]].
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=File Carving=
  
 
Most file carvers operate by looking for file headers and/or footers, and then "carving out" the blocks between these two boundaries. [[Semantic Carving]] performs carving based on an analysis of the contents of the proposed files.  
 
Most file carvers operate by looking for file headers and/or footers, and then "carving out" the blocks between these two boundaries. [[Semantic Carving]] performs carving based on an analysis of the contents of the proposed files.  
  
Many carving programs have an option to only look at or near sector boundaries where headers are found. Searching the entire input can find files that have been embedded into other formats, such as [[JPEG]]s being embedded into [[Microsoft]] [[DOC|Word documents]].
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File carving tools are listed on the [[Tools:Data_Recovery]] wiki page.
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Many carving programs have an option to only look at or near sector boundaries where headers are found. Searching the entire input can find files that have been embedded into other files, such as [[JPEG]]s being embedded into [[Microsoft]] [[DOC|Word documents]].
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DFRWS2006 featured a [http://www.dfrws.org/2006/challenge/index.html file carving challenge]. As a condition of entering the challenge, all tools and techniques developed to solve the challenge had to be open sourced.
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=Memory Carving=

Revision as of 16:44, 29 December 2006

Carving is the practice of searching an input for files based on the input's content. Most often the input is a disk image, but it's possible (and sometimes practical) to carve individual files or physical memory.

File Carving

Most file carvers operate by looking for file headers and/or footers, and then "carving out" the blocks between these two boundaries. Semantic Carving performs carving based on an analysis of the contents of the proposed files.

File carving tools are listed on the Tools:Data_Recovery wiki page.

Many carving programs have an option to only look at or near sector boundaries where headers are found. Searching the entire input can find files that have been embedded into other files, such as JPEGs being embedded into Microsoft Word documents.

DFRWS2006 featured a file carving challenge. As a condition of entering the challenge, all tools and techniques developed to solve the challenge had to be open sourced.

Memory Carving