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 Post subject: Tropico 3 - Bypassing Research
PostPosted: Sun Mar 28, 2010 4:03 pm 
VA Team
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Posts: 286
Attention: This is for educational purposes only and should not be used to bypass any protection or restriction. I take no responsibility!


Serial Check

1. Tropico checks the serial for validation by checking it's algorithm.
2. If the algorithm is correct it will send the key to the server to check if it is blacklisted.
3. If there is no Internet Connection or no response after 10 seconds the blacklist check will be ignored.

Solution:

Set a BP on the Send function
Code:
004A7574   $- FF25 54C46C00 JMP DWORD PTR DS:[<&WS2_32.#19>]         ;  WS2_32.send

and Recv function
Code:
004A759E   $- FF25 38C46C00 JMP DWORD PTR DS:[<&WS2_32.#16>]         ;  WS2_32.recv


Return from call and just nop both calls out. There will be no response from the server thus the blacklist check will be ignored.

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