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Audio/video stream recording forums (http://stream-recorder.com/forum/index.php)

- Removing DRM protection from eBooks (http://stream-recorder.com/forum/forumdisplay.php?f=63)

- -

skindle - remove DRM from KindleForPC ebooks (mobi and topaz)

(http://stream-recorder.com/forum/showthread.php?t=6219)

dare05

09-17-2010 05:48 PM

Re: skindle - remove DRM from KindleForPC ebooks (mobi and topaz)

Quote:

Originally Posted by slayda (Post 21552)

You say you tried to open with Mobipocket Reader & nothing happened. Are you sure it was actually decrypted? If so, how do you know? Sounds like maybe it did not decrypt.

It did decrypt, I know because I tried decrypting the decrypted file and then skindle reported an error as it was unable to find that DRM key. So the file I was trying to open was actually decrypted. Is there some special software to open azw files...or if you prefer I can send you the decrypted file so you can check it out, please PM me with your email.

Edit: I'm 100% sure the DRM key is removed but for some reason I can't simply change the file to .mobi and open it normally. Is Skindle still working? That's the question.

joe32

09-21-2010 07:38 PM

Re: skindle - remove DRM from KindleForPC ebooks (mobi and topaz)

I have the exact same problem as user Dare05 . I have a file that i decrypted. But i can't view it in Calibre ( says "this is an Amazon topaz book. It cannot be processed") Mobipocket reader says the file is corrupt. But i can open it using Kindle for PC. Can anyone please say what is going wrong?

slayda

09-21-2010 10:16 PM

Re: skindle - remove DRM from KindleForPC ebooks (mobi and topaz)

Quote:

Originally Posted by joe32 (Post 21666)

I have the exact same problem as user Dare05 . I have a file that i decrypted. But i can't view it in Calibre ( says "this is an Amazon topaz book. It cannot be processed") Mobipocket reader says the file is corrupt. But i can open it using kindle for pc. Can anyone please say what is going wrong.

I was just recently reviewing the skindle ReadMe file and noticed this argument;

-d optional, for topaz files only, produce a decompressed output file

The Topaz file might be compressed and that may be the problem. Try running skindle again using the original file and include this argument to uncompress and see if that makes a difference. I've never messed with Topaz files & this may not be the problem you're having.

joe32

09-22-2010 12:28 PM

Re: skindle - remove DRM from KindleForPC ebooks (mobi and topaz)

Thanks for the input Slayda. But I already tried the decompression option. I made two files, one decompressed and the other without the decompression option. But both files behaved the same way, as stated in my earlier post. Have you guys tried converting anything recently? I am wondering if Amazon updated their drm. I remember there was an update for K4PC about a month and a half ago.

bug	10-09-2010 12:53 PM

Re: skindle - remove DRM from KindleForPC ebooks (mobi and topaz)

Hi,

I just downloaded a book from Amazon to my pc (windows xp) and I am trying to remove the drm (with skindle) without success. This is a replica of what I get on the screen:

Code:

skindle -i xxx.azw -o xxx.mobi

Attempting to locate kindle.info

Found kindle.info location

Using UserName = "Void"

Using SystemDrive = "C:\"

Using VolumeSerialNumber = "NNNNNNNNNN"

Device PID: XXXXNXXX

PID for xxx is: YYYyYyyY

Didn't find PID magic numbers in record

Found a DRM key!

634702b65r3829g3

Parse Error : Failed payload read of record color: 1 offset 0x4de592:0x0

and then windows sends a pop-up telling me skindle has made an error and has to close. This has happened several times already.

Anybody knows what I'm doing wrong, or how this could be solved?

Thank you very much in advance,

Simon

slayda

10-11-2010 07:06 PM

Re: skindle - remove DRM from KindleForPC ebooks (mobi and topaz)

I just had a similar experience & here's what I've done (no solution yet if ever). When I DLed the book to K4PC it showed as a .azw type but when I DLed it to my computer for transfer to Kindle, it showed as a .tpz file. This seems strange to me. Is it an AZW book or a TPZ book? Still investigating. Will DL directly to Kindle (once the battery is recharged), transfer to computer and see what it looks like.

Edit: The ebook brought in from the Kindle had the extension of .azw1. Apparently this is a Topaz ebook and skindle is not working with it. I had my doubts that it would work with a Topaz ebook but this is the first one I've bought to try it with. A .azw ebook purchased at the same time had no problem with skindle.

any ANONYMOUS forum user

10-14-2010 07:19 PM

Re: skindle - remove DRM from KindleForPC ebooks (mobi and topaz)

Does someone know what they use instead of CryptUnprotectData on the Mac?

I checked skindle and a few things that are different for sure:

The kindle.info is located here:

Code:

/Users/x/Library/Application Support/Amazon/Kindle For Mac/storage/.kindle-info

string_32 is the same, but string_64 is different. The correct string is:

Code:

"ZB0bYyc1xDdW2wEV3Ff7KkPpL8UuGA4gz-Tme9Nn_tHh5SvXCsIiR6rJjQaqlOoM"

From there I just have no clue what they use instead of CryptUnprotectData. The other info was available using lsof/opensnoop and strings.

fussman

11-25-2010 08:48 PM