Reverse Engineering Custom Data File

Posted by kerchingo on Stack Overflow See other posts from Stack Overflow or by kerchingo
Published on 2010-03-28T03:53:34Z Indexed on 2010/03/28 4:03 UTC
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reverse-engineering

At my place of work we have a legacy document management system that is now unsupported by the developers due to variours reasons, i have been asked to look into extracting the documents contained in this system to eventually be imported into a new 3rd party system.

From various tracing and process monitoring I have determined that the document images (mainly tiff files) are stored in a number of 1.5gb files, these files seem to be read from a speficic offset and then written to a tmp file that is then served via a web app to the client and then deleted.

I guess i am looking for suggestions as how I can inspect these large files that containn the tiff images and eventually extract and write them to individual files.

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