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  1. #1
    novoment
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    The only way to do that is to do some reverse engineering on the only two (as far I know) programs that can read Nt format: Garmin Mobile XT and Mapsource (and its derivatives: training center and so on)...so, we need some magic here

    Several days ago I have read in another blog that the nt format is just scrambled by a simply xor function, that is because it cannot be decrypted, yet?

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    Last edited by Roger; 15th February 2013 at 10:22 AM. Reason: merged post

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  3. #2
    Navigation software Moderator kunix's Avatar
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    Quote Originally Posted by novoment View Post
    Several days ago I have read in another blog that the nt format is just scrambled by a simply xor function, that is because it cannot be decrypted, yet?
    If it were that simple, everyone would already be able to do that. But no, NT is somewhat more complicated. Speaking in general terms, older IMG sections are packed inside the new GMP section, and a few new datatypes are added to the older sections.
    Also a few people have definitely reverse engineered it, but they don't release the results of their efforts. And I can't blame them for that
    And also the tiny bits of info above is not my personal research, I'm just retelling the words of one man "in the know".

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    Navigation software expert How to extract POIs from ".gmp file from City Navigator Europe NT 2013.30.gmap
    How to extract POIs from ".gmp file from City Navigator Europe NT 2013.30.gmapHow to extract POIs from ".gmp file from City Navigator Europe NT 2013.30.gmapHow to extract POIs from ".gmp file from City Navigator Europe NT 2013.30.gmap
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    Quote Originally Posted by novoment View Post
    Several days ago I have read in another blog that the nt format is just scrambled by a simply xor function, that is because it cannot be decrypted, yet?
    Read this blog and you know that a some resource is packed for smaller size of data. I do not hear about xor function for packing...
    Garmin, how much is 30 pieces of silver for Judas today? Were they worthy for crucifix of GPSPower?

 

 

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