I have extracted a raw data file from a magnetic tape using the dd command
Afterwards, I managed to read the extracted data with Bless HexEditor and I found out that at offset 0x200000 there is a sequence of value which originally was stored in a table.
I would like to extract this data and import it in an Excel or CSV file, but above all I would like to understand the data encryption.
This is an example of the data extracted in hexadecimal format and its representation in unsigned int little endian:
Can you understand starting from this piece of converted data how the raw file is encoded and how I can create a bash script to decode it??
Thanks
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Last edited by NICEPeppino; 07-30-2014 at 08:03 AM..
I have heard many times that this job cannot be done without knowing the source of my data and how it has been written on the tape and I agree with you. Unfortunately, I must do it without any insight and this is the reason why I started looking at its hexadecimal notation with an hex editor.
The tape is a mix of metadata and voice audio and I need to figure out how I can decrypt both these source within the image.
Thanks to the hex editor I now understand that before each audio there is a piece information concerning the audio.
The information above is regarding this info.
My knowledge about reverse engineering is limited but I must do it (Job is Job )
Apprarently I was previously wrong since I have copied and pasted this piece of data on this
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