VRChat added VRCA (?maybe VRCW too) protection
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I am hesitant at sharing what I know as I am sure the devs watch these forums but I assume it is safe to at least share this:
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everything must be decrypted before it get's passed to the Unity Engine. Otherwise it is just gibberish. Find out the functions/classes called or the memory address space used for the byte stream and bam you got it.
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VRChat must use a fast encryption/decryption (vrc_fast_crypto.dll ???) method otherwise players would notice a lot of lag when loading models. Fast methods tend to mean less secure methods.
2a. Think about it, the model is downloaded unencrypted for a reason, to just download an unencrypted model then encrypt it then decrypt it is slow, this leads me to one conclusion: its for the Unity Engine. The encryption is just for your local cache, this allows for fast rendering and prevention of lag. In a hex editor, compare the __data file that is stored in the Unity/Temp folder that gets immediately deleted vs the __data file in the VRChat/Cache folder. You'll notice something
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@qwwee Only "bypass" that's known is having a modified client. People around say you can just "intercept" the model during the download process. Its been confirmed here and on other places, as well as recently on a VRChat forum.
https://feedback.vrchat.com/bug-reports/p/the-new-vrca-client-side-encryption-can-still-be-bypassed
@StinkerGuy115 I would like to add you on Discord to learn more details, if thatโs alright with you.
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Oh my I did not realize I got this popular >A< dang. Yes I figured out how to rip models again. No I am not telling you how to do it (devs are lurking).
I might make a thread so people can request avatar vrca files by putting an avatar ID and i put the vrca out, but then that might get me into a lotta trouble sharing around avatars vrchat sells lol. I will think about it. I dont rip to redistribute assets or make a profit, I do it cause I like tinkering with stuff and it helped me learn how to make avatars.
I was motivated to do it again cause theres so many broken models on vrchat that I fix up/improve and upload to my account. I spent years learning unity, the VRChatSDK, and other computer junk to do what I do lol.
AND IM NOT GIVING PEOPLE MY DISCORD I DONT KNOW YOU PEOPLE
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Oh my I did not realize I got this popular >A< dang. Yes I figured out how to rip models again. No I am not telling you how to do it (devs are lurking).
I might make a thread so people can request avatar vrca files by putting an avatar ID and i put the vrca out, but then that might get me into a lotta trouble sharing around avatars vrchat sells lol. I will think about it. I dont rip to redistribute assets or make a profit, I do it cause I like tinkering with stuff and it helped me learn how to make avatars.
I was motivated to do it again cause theres so many broken models on vrchat that I fix up/improve and upload to my account. I spent years learning unity, the VRChatSDK, and other computer junk to do what I do lol.
AND IM NOT GIVING PEOPLE MY DISCORD I DONT KNOW YOU PEOPLE
@StinkerGuy115 you mentioned avi ID, does that mean you are able to do it while not in the same place ingame?
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I am hesitant at sharing what I know as I am sure the devs watch these forums but I assume it is safe to at least share this:
-
everything must be decrypted before it get's passed to the Unity Engine. Otherwise it is just gibberish. Find out the functions/classes called or the memory address space used for the byte stream and bam you got it.
-
VRChat must use a fast encryption/decryption (vrc_fast_crypto.dll ???) method otherwise players would notice a lot of lag when loading models. Fast methods tend to mean less secure methods.
2a. Think about it, the model is downloaded unencrypted for a reason, to just download an unencrypted model then encrypt it then decrypt it is slow, this leads me to one conclusion: its for the Unity Engine. The encryption is just for your local cache, this allows for fast rendering and prevention of lag. In a hex editor, compare the __data file that is stored in the Unity/Temp folder that gets immediately deleted vs the __data file in the VRChat/Cache folder. You'll notice something
@StinkerGuy115 i believe in unity/temp they also get encrypted same like vrchat/cache folder? i know what you mean but i do not see any difference
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Oh my I did not realize I got this popular >A< dang. Yes I figured out how to rip models again. No I am not telling you how to do it (devs are lurking).
I might make a thread so people can request avatar vrca files by putting an avatar ID and i put the vrca out, but then that might get me into a lotta trouble sharing around avatars vrchat sells lol. I will think about it. I dont rip to redistribute assets or make a profit, I do it cause I like tinkering with stuff and it helped me learn how to make avatars.
I was motivated to do it again cause theres so many broken models on vrchat that I fix up/improve and upload to my account. I spent years learning unity, the VRChatSDK, and other computer junk to do what I do lol.
AND IM NOT GIVING PEOPLE MY DISCORD I DONT KNOW YOU PEOPLE
-
Oh my I did not realize I got this popular >A< dang. Yes I figured out how to rip models again. No I am not telling you how to do it (devs are lurking).
I might make a thread so people can request avatar vrca files by putting an avatar ID and i put the vrca out, but then that might get me into a lotta trouble sharing around avatars vrchat sells lol. I will think about it. I dont rip to redistribute assets or make a profit, I do it cause I like tinkering with stuff and it helped me learn how to make avatars.
I was motivated to do it again cause theres so many broken models on vrchat that I fix up/improve and upload to my account. I spent years learning unity, the VRChatSDK, and other computer junk to do what I do lol.
AND IM NOT GIVING PEOPLE MY DISCORD I DONT KNOW YOU PEOPLE
@StinkerGuy115 Can you share some ideas rather than some certain methods about how to get the vrca files? I mean I tried wireshark and memory dump, both of them didn't work.
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@StinkerGuy115 Can you share some ideas rather than some certain methods about how to get the vrca files? I mean I tried wireshark and memory dump, both of them didn't work.
@tb17074107 pretty sure its modded vrc clients like abyss or hex
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@agent287 Do you mind repping so I can dm u?
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@Spiritslost add my disc .agent297
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@agent287 Does not work
@Spiritslost i meant .agent287 mb
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@agent287 Does not work
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