[V3] Image download endpoint?

[Bornhall]

Does anyone have the endpoint for, and know how to retrieve an image posted to a message thread?

Not looking to post an image, just getting it.

Posting an image to a thread, I've gotten the following in the message:

"messageDetail": {
    "imageMessageDetail": {
        "resourceId": "75c<16 hex chars>.<16 hex chars>_message_418840640297774_1636096251163"
    }
},

...where the two pairs of <16 hex chars> corresponds to the group id (as in ~<16 hex chars>.<16 hex chars>). Don't know where the "75c" part comes from, but I assume it's instead of the tilde character. The numeric part following "message" is unknown, but could simply be a kinda random numeric value. The last part looks to be a timestamp with microseconds.

I've tried accessing the /gameMediaService/v2/c2s/ugc/<UGC id>/url with set to various string combinations from the above resourceId, but only getting 404 not found in a JSON response, like this:

{"error":{"referenceId":"8126e6eb-3141-4214-b627-b224eb3aac6a","code":404,"reason":"document does not exist","message":"document does not exist","source":"shared_media"}}

Anyone had any luck with retrieving an image from the current API? I've tried snooping the traffic via a proxy to get at the endpoint URL, but as we know, normal SSL proxying prevents it from connecting.

[Bornhall]

Ok, this might be of interest to Tustin, I think I've found the endpoint to download images from a message thread:

/gamingLoungeGroups/v1/groups/ <threadId> /resources/ <resourceId>

Testing it now I got the test image I sent (a JPEG) just like that. The <threadId> is the message thread or group id, and <resourceId> is the entire string from the resourceId I mention in previous post, ending with the "_message_418840640297774_1636096251163" string.

To find this, I dug a bit and did a decompile of the Android version of the PlayStation app from the APK package, then started going through the code as good as I could. There are a lot more endpoints in the code if anyone is interested in browsing through it (searching for "/v1/" yields a lot for starters). I ran it through a javascript beautifier to make it readable, so it's now around 15 megabytes in size. Not sure posting it here is a great idea, but here's what you can do:

1. Grabbed the APK for PlayStation app, version 21.10.1 from apkpure here: https://apkpure.com/playstation-app/com.scee.psxandroid
2. Uploaded the APK file to http://www.javadecompilers.com/apk/
3. Downloaded the resulting ZIP file.
4. Inside the /resources/assets folder is a file named index.android.bundle
5. Rename that file to .js and run it through a JS beautifier, I used https://beautifier.io/
6. Save the beautified file somehwere and start browsing.

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