Hola Amigo

reverse crypto exotic FCSC 2023 solved on

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Description

Your nostalgic friend loves the “demoscen”. Unfortunately, with his last download of a famous demo he got a ransomware that encrypted his favourite game floppy disk (a rare and hard to find gem).

You are his last chance to recover this! He provides you the ransomware_floppy.adf and flag_floppy_enc.adf images (the latter containing the encrypted data). He also precises that his model is a 500 with an AROS ROM, and that you probably shouldn’t trust the metadata on the encrypted floppy: he could have unexpectedly modified them when trying to read it on his PC.

Files

  • ransomware_floppy.adf
    880.00 KiB – 6be8eaa15d08c20e46d69d63dccd734148a6fefab98f64912c20ec420093cd9d
  • flag_floppy_enc.adf
    880.00 KiB – 0b2e6754e32e543c264549c4c82df651d8b955dddaa626d7e78bc839ceb494fa

Author

rbe

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Writeups

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DateAuthor Language Tags Vote
2023-11-06
face0xff
🇬🇧
TeamFrance