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  1. #1
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    Jul 2010

    Raw text message file format (from *.nbf) description?

    Hi everyone,

    I'm stuck with few backup files (*.NBF) created using Nokia 3720c which contain ~7000 text messages (SMS) altogether which I must extract somehow.
    I've discovered that NBF files are actually ZIP archives, so I was able to unpack them and locate messages inside predefmessages folder.
    But messages are in binary format which I'm not familiar with. I have investigated few of them byte by byte and I was able to extract phone number (unicode string starting at offset 0x5F) and message body (also unicode string, starting at offset: 0xF6 + value of byte at offset 0x07, first two bytes at that offset define length of the string). I just cannot extract date/time information. I suspect that it's located somewhere between offset 0xB0 and message body but I cannot find any useful data in that area (I've checked all datetime formats I know about: DATE, FILETIME, DOS date/time, time_t and time64_t but nothing useful came up).

    Is there anyone familiar with this format, or maybe there is some format specification online (I've googled, but found nothing)?

    thank's in advance!
    Last edited by raleksandar; 2010-07-01 at 04:07. Reason: typos

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