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« Return to Thread: Karaoke File Unlock Help
Re: Karaoke File Unlock Help
by bigboss97
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I don't think I would have a chance to look at them very soon. But it's also good if you can attach an English song. Some one else might get a chance to help you. The break through usually starts from the lyrics. So, we have to know the lyrics of a song.
Can you try to mask (XOR) ".AUT" and force it to "MThd" because standard MIDI starts with that? See how you go. If it's MIDI then you should also be able to see "MTrk" somewhere.
Patching is a good start, but only patch one single byte at a time (a song) or many bytes but the value only slightly changed. If small changes can break a song that means you have patched into a mask. Since it's a mini player I don't believe it's carrying too much data in each song.
Don't experiment with the header. Say, patch at 1/4 or 1/3 of the song. Try to change ~3 consecutive bytes. So, increase the chance to patch into a lyric letter beause if you patch into timestamp you can't hear it. btw, check the suggested tools in this forum.
If it's voice recording then it's not useful for us.
Can you try to mask (XOR) ".AUT" and force it to "MThd" because standard MIDI starts with that? See how you go. If it's MIDI then you should also be able to see "MTrk" somewhere.
Patching is a good start, but only patch one single byte at a time (a song) or many bytes but the value only slightly changed. If small changes can break a song that means you have patched into a mask. Since it's a mini player I don't believe it's carrying too much data in each song.
Don't experiment with the header. Say, patch at 1/4 or 1/3 of the song. Try to change ~3 consecutive bytes. So, increase the chance to patch into a lyric letter beause if you patch into timestamp you can't hear it. btw, check the suggested tools in this forum.
If it's voice recording then it's not useful for us.
Carlos Barcellos wrote:I'm attaching the "Happy Birthday to You", at least the brazilian version of it (a little bit longer than the English one).
I'm almost sure that the header that starts with ".AUT(" has 0x828 bytes (including the .AUT itself). The first 3 bytes after the ".AUT(" seems to not be used, they are always zero. I've changed these 3 bytes to some garbage and my song still works, but if I change some byte after it, this song cannot be played. I've tried to get one chunk of a second file after this 0x828 bytes and put on the first one. The player acts estrange but this works. I guess this header is based on my player serial number + the song name and size. This is not a massive digest of any sort.
About the MIDI keyboard, unfortunately I don't have it. I can only sing my voice, but the generated file is yet another encoding, this is completely different from the .MUK files. Inside of this file you can see in plain text that this is pointing to the .MUK file and after it this is saving my voice in some general encoding (probably encrypted MP3).
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