The archive file typhoon.dat doesn't have filenames, only hashes. I need a way to restore filenames from typhoon.dat

https://drive.google.com/file/d/1s_HQdYdzAv95lTRYj6ZlMTNlq-cR12v-/view?usp=sharing

Edited Thursday at 07:01 PM2 days by mrmaller1905

I think I have recovered about 77% of the filenames. I got these after placing a bunch of hooks on functions from the internal filesystem and functions that handle the resources from the XFS archive and its streaming interface.

The following python code was used to perform the hashing:

def hash_path(path: str) -> int:
    data = path.encode("latin-1")

    if len(data) < 2:
        return 0

    suffix_sum = 0
    suffixes = [0] * len(data)

    for index in range(len(data) - 1, -1, -1):
        value = data[index]
        if value >= 0x80:
            value -= 0x100  # signed byte

        suffix_sum = (
            suffix_sum
            + (value + index) * (value + 0x13)
        ) & 0xFFFFFFFF

        suffixes[index] = suffix_sum

    result = 0

    for index in range(len(data) - 1):
        value = data[index]
        if value >= 0x80:
            value -= 0x100

        result = (
            result
            + suffixes[index]
            * (value + 7)
            * (value + index)
        ) & 0xFFFFFFFF

    return result % 0xEE6B2800

This is a great start but, we're still missing the original paths of roughly around 3.1k assets.

typhoon_hashes.7z

What program did you use to restore hashed filenames?

I created my own DLL which uses MS Detours to hook the necessary functions inside of the game executable. The data the hooked functions parse I log to disk and then I ran them through the python script.

Btw, format was already covered on the wiki
https://rewiki.miraheze.org/wiki/Rage_Software_XFS