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Is it possible to get CEG protected exe that validates in CF toolbox? (ie. iw4sp.exe)
How exactly CEG works?

1. No
2. Google

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davispuh
CEG makes a custom EXE file for your Steam account and CFToolbox does not work well with CEG protected files.

Valve talks a little about CEG:
http://www.steampowered.com/steamworks/ ... rvices.php

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The phrase "Login to http://www.clue.org and issue the GET command" springs to mind...

I moderated this forum.

Then ur a idiot !
It is VERRY posible to get the CEG binary valid,but you can't play !

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Congrats I give you the award for the most stupid sentence 2010, and NO CFToolbox cant handle CEG binaries it does not know how to write them idiot.

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CPAMX
I am able to get an EXE file that CF Toolbox is happy with (Validates) but Steam, doesn't like that EXE file.

To do this yourself, get a Steam game with CEG that you own, delete the protected EXE file and then Validate the game in Steam. When Steam says it has to download the missing file, open the game folder and get ready to copy the EXE file out. Click OK/Close on the Validation window. Steam downloads the EXE file, THEN applies CEG. If you are quick enough, you can copy that unprotected EXE file out before Steam can apply it's protection.

The only problem is that Steam will NOT accept this unprotected file since it tries to decrypt it when it's run, but since it's not encrypted, it fails so Steam doesn't run the game.

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The phrase "Login to http://www.clue.org and issue the GET command" springs to mind...

I moderated this forum.

that's not a problem, you can still reach the real OEP but many functions are missing

Yes it is, simply by downloading the game from Steam as a legit user.
A non-CEG protected binary is useless on the other hand, because you cannot get them to run.
A CEG protected binary is useless since it would refuse to run on a machine different from the one it was created on.



CEG is not packing the binary. You cannot technically restore a stripped CEG protected binary. You'll need a proper, CEG-enabled binary for this.


a) 'ur' is a common colloquial bbreviation for 'your', but not for 'you're'.
b) It has to be 'an idiot'.
c) The proper spellings are 'very' and 'possible'.
d) Something can either be possible or not. 'very possible' makes absolutely no sense.
e) It has to be either 'validated' or 'a valid CEG protected binary'.
f) BUY A FUCKING DICTIONARY, YOU IDIOT.

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Game Industry Guardian (1K+).

Yeah, I was talking about a stripped executable (those one which starts with a call to basic operations and the reach the 0x8000DEAD (xD) offset

I took a look in those new CEG protection. It seems that once in a while it redirects a call overwiting it with a 'call eax' which leads to a function that generates the real offset to reach. Just a little before this operation there's the creation of a DLL called WiseCustomCalla.dll which inside, among other things, contains a function to authenticate by CRC the .text section of the executable. I'm not quite sure of how the generation algo works anyway... I'm trying to redirect the DLL reading into the local folder so that it could run a custom DLL without the CRC check and maybe other things but I can't find the exact point of where it loads the file.

this

and

are ambiguous because from first quote I suppose that NCFs are storing checksum before CEG, but from second quote it looks that NCFs are storing checksum after CEG


PS. I don't own any CEG protected game, so all my knowledge have been acquired by reading, but there aren't much info about CEG
I already googled, but I found only non-specific information, my goal is know what's under the hood. (looks like no one knows or this isn't right place to ask)

You didn't mentioned anything about CFToolbox !
He asked if it's possible to get that file valid in CFToolbox and your answer was no,so i corrected you !

_________________
If you have any new game acf's (with depotcache's), ncf's or gcf's, PM me !
My best post
We evolved from smart users with dumb terminals to dumb users with smart terminals.
I need updates for the following :

Ok to end this fucking useless discussion here, there are 2 variants of CEG executables. If you download the game it is the raw binary which has has the protection but is incomplete (not of size but of content), and if you start the game via Steam it will download the missing parts and apply them, usually the missing chunk is set by the developer by Macros

CEG_SECTION_START(), CEG_SECTION_END() which is basically just _asm emit 'someshithere', so the Content Server is able to put the pieces togheter. Usually its strings and sometimes whole functions.

Another thing about the CEG binary is that the entry point is always set to a function which just does:
push 8000DEAD
call ExitProcesss

To prevent that you will crash because of the missing content.

And best_matrix07 stop trying to get out of your own dumbness, if you fuck up with the shit you say then also live with it. I must agree about what ChrisTX says, buy a god damn dictionary. My english isnt the best either but I think im at least able to express my self proper.

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There are 10 types of people in this world:
Those who get Binary, And those who don't.

this isn't useless
if I understood correctly then steam client downloads game exe with incomplete CEG, this incomplete CEG validates (NCF has it checksum) then steam patches full CEG and that won't validate because now checksum is different...
exe that's patched with CEG has some information about PC and if it isn't same as current PC then it won't run...
am I right?

The CEG file will always validate, its either incomplete or has the CEG parts inside both methods will let it validate, if you modify the file however it would redownload it.

So you are pretty much right

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There are 10 types of people in this world:
Those who get Binary, And those who don't.

As soon as the executable (or whatever file is CEG protected) includes CEG (information about the PC it is running on) it won't validate in Steam anymore. Steam will re-download this file if you verify game cache files. This is a commonly known fact.

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