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snakeblue1, posted Thu Jan 16, 2020 11:59 am (53271)

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Hello , i tried to extract files from a .obb file from a android game changing his type of file with ".zip" then i got a lot of folders (see img 1) , but when i try to open png files it says "photo viewer cant open this picture because the file appears to be damaged , corrupted, or its too large" i dont know if i have to use other methods of extraction , i checked the .obb file in the hex worshop and shows me this PK in the Header (see img 2), please help.

this is the link of the .obb archive
https://drive.google.com/file/d/1ppihn16v5juL6YBLvnnuw117vwwpZXpZ/view?usp=sharing

IMG1

IMG2

LolHacksRule, posted Thu Jan 16, 2020 4:59 pm (53280)

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Header of a PNG image?

LokiReborn, posted Thu Jan 16, 2020 7:48 pm (53283)

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snakeblue1 wrote:

Hello , i tried to extract files from a .obb file from a android game changing his type of file with ".zip" then i got a lot of folders (see img 1) , but when i try to open png files it says "photo viewer cant open this picture because the file appears to be damaged , corrupted, or its too large" i dont know if i have to use other methods of extraction , i checked the .obb file in the hex worshop and shows me this PK in the Header (see img 2), please help.


IMG1

IMG2

I would post the obb file, also I can't really tell from your picture but if that is 63/ and not 637 I'd remove the / as that's an invalid character for windows and can cause unexpected behavior as well.

snakeblue1, posted Fri Jan 17, 2020 11:39 am (53298)

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thanks for your help , i edit the post with .obb file and this is the header of the png file.
any tip or recomendation is appreciate it.

LolHacksRule, posted Fri Jan 17, 2020 5:05 pm (53306)

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Funky header, doesn't look like encryption (there are a portion that are) but another PNG file's header? Fun fact, files are named MD5 hashes and folders are named two digits of them.

Code:

header (7bytes): 40 53 23 54 24 4F 25 (@S#T$O%)
idk (2bytes): Not relating to filesize
zero (2-3bytes)
idk2 (2-3bytes?)

h0m3us3r, posted Fri Dec 11, 2020 10:11 am (61048)

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Any progress with this? Having the same issue.