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Ciscopack Tool
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SUMMARY
DETAILS
Ciscopack is an IOS binary image packing and unpacking program capable of
calculating a correct checksum for these images for Unix bases systems.
Cisco is using it's own modified version of the ZIP archiver, and if you
don't have it, simply supplement the unpacked image body with an empty bit
(0xFF) in your favorite hex editor, if the image length is a fraction
after packing with ZIP (see the length in the tool output in brackets
before "words"). Then use ciscopack.pl to repack the image and the correct
checksum would be calculated. Please read the --help output for the
options available. Don't forget that you need ZIP installed to use
ciscopack.pl.
To download the tool:
<http://www.hackingciscoexposed.com/tools/ciscopack.tar.gz>
http://www.hackingciscoexposed.com/tools/ciscopack.tar.gz
ADDITIONAL INFORMATION
The information has been provided by <mailto:andrew@arhont.com> Andrew A.
Vladimirov.
To keep updated with the tool visit the project's homepage at:
<http://www.hackingciscoexposed.com/?link=tools>
http://www.hackingciscoexposed.com/?link=tools
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The information in this bulletin is provided "AS IS" without warranty of any
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