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Bypassing the Game Launcher

 
Post new topic   This topic is locked: you cannot edit posts or make replies.    Cheat Engine Forum Index -> General Gamehacking
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hnti
How do I cheat?
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Joined: 09 Jan 2010
Posts: 2

PostPosted: Mon Jan 18, 2010 10:50 am    Post subject: Bypassing the Game Launcher Reply with quote

Hi, I'm new on the forum.

I am trying to bypass a certain game launcher with OllyDbg so I can use directx-mess on the game.

I tried changing the JNZ and JE conditions that are right above the "You must start the game from the launcher..." messageboxes to JMP, but it did not work.

Any tips will be greatly appreciated.
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Pot.Smoking.Terrorist
Expert Cheater
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Joined: 15 Jun 2008
Posts: 175
Location: Germany

PostPosted: Mon Jan 18, 2010 11:25 am    Post subject: Reply with quote

Some more informations? Very Happy
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Xenico
Advanced Cheater
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Joined: 27 Dec 2009
Posts: 94

PostPosted: Mon Jan 18, 2010 11:34 am    Post subject: Reply with quote

We would prefer knowing what certain game launcher you mean and what you did exactly, error messages or whatever,

THEN helping becomes possible Razz

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hnti
How do I cheat?
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Joined: 09 Jan 2010
Posts: 2

PostPosted: Mon Jan 18, 2010 12:31 pm    Post subject: Reply with quote

Thanks for the responses, guys.

The game is called Face of Mankind. Here are the jump conditions that I tried changing to JMP

http ://img691.imageshack.us/img691/6628/48933429.jpg

http ://img706.imageshack.us/img706/4488/30348003.jpg

And here is the error message I got:

http ://img59.imageshack.us/img59/3765/82100836.jpg

Urgh.. looks like I can't post pictures yet and the attachment option lagged out. I added an extra space after http.
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Guy
Expert Cheater
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Joined: 30 May 2009
Posts: 187

PostPosted: Wed Jan 20, 2010 10:14 pm    Post subject: Reply with quote

hnti wrote:
Thanks for the responses, guys.

The game is called Face of Mankind. Here are the jump conditions that I tried changing to JMP

http ://img691.imageshack.us/img691/6628/48933429.jpg

http ://img706.imageshack.us/img706/4488/30348003.jpg

And here is the error message I got:

http ://img59.imageshack.us/img59/3765/82100836.jpg

Urgh.. looks like I can't post pictures yet and the attachment option lagged out. I added an extra space after http.


Maybe there's some code segment integrity checks in the game client which monitor for those kind of changes.

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Psy
Grandmaster Cheater Supreme
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Joined: 27 Mar 2008
Posts: 1366

PostPosted: Thu Jan 21, 2010 4:48 am    Post subject: Reply with quote

@OP: This isn't a cracking forum, which is exactly what you're tyring to do.
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ctpsolo
Newbie cheater
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Joined: 14 Jan 2010
Posts: 10

PostPosted: Sat Jan 23, 2010 5:09 pm    Post subject: Reply with quote

Try doing this.
1. Make the changes you did
2. Dump the patched version (get OllyDump plugin if you don't have it).
3. Check original CRC of the program you are messing with (Peid + crc plugin needed).
4. Change the crc of the dumped version to the original crc.

This can work sometimes if it doesn't have any more advanced checksum system.
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