Ingress: Clue – Hollis Dead

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Tanks to Brendan McKelvy The o in Hollis was yellow on the audio-diary 4 and links to this image.
http://i0.wp.com/commondatastorage.googleapis.com/pac/IB/00/sc0/hollis/hollisdead.jpg?resize=702%2C1126

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  1. In Hollis5 (555h5), there is the following byte stream — possibly an MP3 frame — near the end of the file (after the LAME encoder marker, so possibly not associated with the rest of the audio data:

    FF FB 92 04 EB 01 02 D3 2E 47 58 C9 1A B0 5E 4D 59 0C 24 62 8E 4A 6D A1 0E A1 84 7E C9 6B 36 21 80 30 8F D9

    In Hollis7 (7h7.mp3)
    FF FB 92 04 EA 00 03 06 6B 48 60 C1 17 42 58 6D 88 F8 0C 23 E8 0B 51 A9 0E C1 84 5E 49 55 B6 61 D4 30 8F D8

    Subtracting one from the other and converting to absolute values gives an interesting pattern of numbers: (the first four 0’s can probably be discarded)

    0 0 0 0 1 1 1 205 61 1 8 8 3 110 6 32 47 236 24 63 90 63 28 8 0 32 0 32 128 22 128 64 84 0 0 1 0 0

    XOR’d together:

    01 01 01 d5 45 0f 38 08 0d f2 06 20 d1 f4 28 41 66 41 3c 08 00 60 00 20 80 3e 80 40 54 00 00 01

    This feels like the wrong approach. I wonder if the MP3 frames need to be collected from all of the Hollis tapes or something, or if this data is used to decode the article somehow.

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Ingress: Clue – Hollis Dead

by Bojan Cincur time to read: <1 min
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