Extracting Unknown File Types (Vita Visual Novel)

Discussion in 'PS Vita - Hacking & Homebrew' started by tnpj, Oct 15, 2016.

  1. tnpj
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    tnpj Newbie

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    Hi, I just created my account here, so please bear with me. I'm trying to extract the scripts of a Japanese visual novel I'm tying to translate into English, but every single game file seems to have the same the same file type (.rom).

    As far as I know, this is a proprietary extension, and from looking at some hex editors, the files are compressed. I am aware of the rules here, so I will not upload any of the files, so for what it's worth, I've attached a screenshot of what the 'script' file looks like in MadEdit.

    I've looked at countless romhacking guides and tutorials, and I've gained an inkling of an understanding of the subject, but in terms of dealing with compressed and/or encrypted files I'm at a complete loss.

    Would someone kindly push me in the right direction? I am a complete novice at romhacking (I just want to translate!), but I am willing to learn. Thank you in advance.
     

    Attached Files:

  2. Zander1995

    Zander1995 GBAtemp Regular

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    It'd probably help if people knew what game you were trying to unpack from.
     
  3. tnpj
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    tnpj Newbie

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    Ao no Kanata no Four Rhythm.
     
  4. Zander1995

    Zander1995 GBAtemp Regular

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    Either it's encrypted, or you have to change the encoding from ShiftJIS to one of the unicode types.
     
  5. tnpj
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    tnpj Newbie

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    That was literally the first thing I tried. The file is compressed, so doing this changes nothing.

    Apart from the garbled text, there are lines like these (refer to uploaded image) throughout the script file. I have no clue as to what I'm supposed to do with it, though. Any help would be greatly appreciated.
     

    Attached Files:

  6. Zander1995

    Zander1995 GBAtemp Regular

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    Well, I mean, the way you described it made it seem like it itself was a script, not that it was an archive. You're gonna have to find someone who can reverse engineer the format to extract the files.
     
  7. tnpj
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    tnpj Newbie

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    Yeah, I figured as much. Damn... In any case, thanks for replying, man. I appreciate it.
     
  8. Zander1995

    Zander1995 GBAtemp Regular

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    I recommend looking on Zenhax forums, or Xentax (though Xentax is paid).
    Zenhax is the QuickBMS home site, and Luigi responds to threads pretty quickly.
     
  9. tnpj
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    Zenhax was extremely helpful. Thank you! Unfortunately, I am still unable to extract the scripts, but at least I'm making some progress :)
     
  10. master801

    master801 GBAtemp Fan

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    Send the file to me in a PM, I'll take a look at it.
     
  11. clienthax

    clienthax GBAtemp Regular

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  12. tnpj
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    tnpj Newbie

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    @clienthax Thanks for all the help, man. I'll take a look at that script.

    @master801 I'm not able to PM you. You might need to change some settings.