From an anonymous source, dated July 2005:
Removing security on Amazon purchased e-books (should work on others
with same security).
To remove the security restrictions from Amazon e-books you need the
following tools Acrobat professional 6 (7 does not work) Any hex
editor (I use 010 Editor)
After you download you book place a copy in a folder so that you do
not damage the orginal file.
Open the PDF in the hex editor and do a search for the term print
The result will be something like the following
0
Change any of the 0 to a 1 or 1 to a 0 (change a 0 to a 1 or a 1 to a
0) and you should have something like this
0
Save the file
Open the same file in Acrobat Pro (you may get a flash of a box saying
it is rebuilding it but ignore this)
Go to security and select the display the security setting
dialogue. (you should see that many of the setting probably say not
allowed) and in the security method (which should say ADOBE DRM)
change to NO SECURITY
This will Bring up a box which asks Are you sure you want to remove
the security from this document?' Press OK. Then OK again.
All the settings should now change to ALLOWED but you must do the
following steps to get a document you can transfer or share (Do not
hit print or anything else or the restrictions will return)
Go to Document, Pages, Extract (Making sure you are on the first page
of the document) and a security box will come up with the following
Pages extracted from a secure file will lose there security settings:
Is it OK to continue?' Press ok
You only then need to extract all the pages and the resulting file is
free of security.
Then go to File, Save As and save the document which will be the name
of the document you opened with Pages from at the
front. Congratulations you now have a document free of security
restrictions.
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