Decryption of latest rFactor 2 encryption

Extraction and unpacking of game archives and compression, encryption, obfuscation, decoding of unknown files
Modder
Posts: 13
Joined: Wed Aug 02, 2017 6:44 am

Decryption of latest rFactor 2 encryption

Post by Modder »

Hi,
could we hope for an update of the rfactor2.bms? Seems, itsn`t working with the newest Encryption.

Used BMS version: 0.8.0
Used script: rFactor 2 (script 0.1.4)

- signature of 6 bytes at offset 0x00000000 doesn't match the one
expected by the script:

this one: "Îþ÷ËÊÊ"
ce fe f7 cb ca ca ......

expected: "f1D }"
66 31 05 44 20 7d f1.D }

- 0 files found in 0 seconds
coverage file 0 0% 6 1396376 . offset 00000006
coverage file -4 0% 0 22016 . offset 00000000
aluigi
Site Admin
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Re: Decryption of latest rFactor 2 encryption

Post by aluigi »

Please provide at least two of these files
Modder
Posts: 13
Joined: Wed Aug 02, 2017 6:44 am

Re: Decryption of latest rFactor 2 encryption

Post by Modder »

Thanks for your fast reply, i`ve send you an email.
aluigi
Site Admin
Posts: 12984
Joined: Wed Jul 30, 2014 9:32 pm

Re: Decryption of latest rFactor 2 encryption

Post by aluigi »

I checked a couple of mas files and I confirm that the algorithm is different, maybe it's something small (like a constant) or something big.
As everybody can see from the source code of rfactor2dec_dll.zip it was a huge work and I don't plan to redo the same now.
If someone wants to contribute with research I will be more than happy to update the script with the provided information (full information, can't waste time with incomplete code).
Modder
Posts: 13
Joined: Wed Aug 02, 2017 6:44 am

Re: Decryption of latest rFactor 2 encryption

Post by Modder »

I would be really happy to contribute, but tbh...i have no clue how this research should be done?
Modder
Posts: 13
Joined: Wed Aug 02, 2017 6:44 am

Re: Decryption of latest rFactor 2 encryption

Post by Modder »

Anybody around, who could jump in here for help?
gpfan
Posts: 3
Joined: Fri Jan 27, 2017 7:22 pm

Re: Decryption of latest rFactor 2 encryption

Post by gpfan »

Anyone has a clue what changed on the algorithm? Or is anyone kind enough to help creating new script?
Modder
Posts: 13
Joined: Wed Aug 02, 2017 6:44 am

Re: Decryption of latest rFactor 2 encryption

Post by Modder »

gpfan wrote:Anyone has a clue what changed on the algorithm? Or is anyone kind enough to help creating new script?


+1
aluigi
Site Admin
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Re: Decryption of latest rFactor 2 encryption

Post by aluigi »

rfactor2 doesn't have these encrypted files.
All the MAS use the usual encryption, no idea what files you have there.
Modder
Posts: 13
Joined: Wed Aug 02, 2017 6:44 am

Re: Decryption of latest rFactor 2 encryption

Post by Modder »

aluigi wrote:rfactor2 doesn't have these encrypted files.
All the MAS use the usual encryption, no idea what files you have there.


aluigi wrote:I checked a couple of mas files and I confirm that the algorithm is different, maybe it's something small (like a constant) or something big.
As everybody can see from the source code of rfactor2dec_dll.zip it was a huge work and I don't plan to redo the same now.
If someone wants to contribute with research I will be more than happy to update the script with the provided information (full information, can't waste time with incomplete code).


If you need the downloadlink again, just let me know...
aluigi
Site Admin
Posts: 12984
Joined: Wed Jul 30, 2014 9:32 pm

Re: Decryption of latest rFactor 2 encryption

Post by aluigi »

I don't need any link.
Here I have the game (which is basically just a modding engine) and I have subscribed and downloaded the ISI content, but all the files are just the normal MAS files.
There is no trace of those unknown MAS posted in this topic.
SimonRussell339
Posts: 2
Joined: Mon Jan 01, 2018 8:18 am

Re: Decryption of latest rFactor 2 encryption

Post by SimonRussell339 »

Hi aluigi I think Modder is referring to the encryption on the new rFactor 2 GT3 Pack
SimonRussell339
Posts: 2
Joined: Mon Jan 01, 2018 8:18 am

Re: Decryption of latest rFactor 2 encryption

Post by SimonRussell339 »

Hi aluigi I could send you one of the files from the rFactor 2 GT3 Pack if that would help.
aluigi
Site Admin
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Re: Decryption of latest rFactor 2 encryption

Post by aluigi »

No thanks, I'm not interested in this.
Modder
Posts: 13
Joined: Wed Aug 02, 2017 6:44 am

Re: Decryption of latest rFactor 2 encryption

Post by Modder »

aluigi wrote:No thanks, I'm not interested in this.


Why that harsh? :? Come on... ;)

What you probably (?) dont got, there are two ways of encryption for rFactor2. One for the stock content and one for the DLC`s. What we`re (a few people from modding com...) are talking about and requesting, is the decryption of the DLC files. Again, if you need further information, please let me know.
aluigi
Site Admin
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Joined: Wed Jul 30, 2014 9:32 pm

Re: Decryption of latest rFactor 2 encryption

Post by aluigi »

Harsh caused by incomplete information provided by everybody since the beginning, so not just you, everybody who contacted me about this stuff never mentioned that it was relative to the few available dlc only and so 99% of files and mods (even those provided by the same developers) of this game work perfectly with my script.

As you can see the topic is open from long time and nobody has expressed interest in working on this encryption yet.

The topic is and will remain open, everybody can do the work and provide information and tool.
sderenno
Posts: 4
Joined: Mon Jan 04, 2016 2:45 pm

Re: Decryption of latest rFactor 2 encryption

Post by sderenno »

The GT3 and Formula E Packs, are new paid DLC from ISI, who has it is because he bought it, our interest is to see how these latest cars are made to be able to insert the improvements in the mods that we will make as a modder. Thanks
Modder
Posts: 13
Joined: Wed Aug 02, 2017 6:44 am

Re: Decryption of latest rFactor 2 encryption

Post by Modder »

sderenno wrote:...our interest is to see how these latest cars are made to be able to insert the improvements in the mods that we will make as a modder. Thanks


exactly that.... +1
Fraggon
Posts: 1
Joined: Mon Apr 30, 2018 4:13 pm

Re: Decryption of latest rFactor 2 encryption

Post by Fraggon »

so, no chance for a new version? :(
fernandinho
Posts: 4
Joined: Wed Aug 01, 2018 4:57 pm

Re: Decryption of latest rFactor 2 encryption

Post by fernandinho »

Hi, i want to help decrypt new mas files. How can i help?