Cheat Engine Forum Index Cheat Engine
The Official Site of Cheat Engine
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 


[C++]Three-level Pointer

 
Post new topic   Reply to topic    Cheat Engine Forum Index -> General programming
View previous topic :: View next topic  
Author Message
Special11
Cheater
Reputation: 0

Joined: 20 Dec 2009
Posts: 28
PostPosted: Sun Feb 07, 2010 3:28 pm    Post subject: [C++]Three-level Pointer Reply with quote
Hi all, can someone tell me what i'm doing wrong?
I'm reading value of pointer and adding offset to it three times but it doesn't work like this pointer in Cheat Engine.

Code:

DWORD oneLevel;
DWORD oneOffset;
DWORD twoLevel;
DWORD twoOffset;
DWORD threeLevel;
DWORD threeOffset;
DWORD BaseAddress = GetModuleBase("TLoader.exe",proc_id);

   ReadProcessMemory(hProcess, (void*)(BaseAddress + 0x26767C), &oneLevel, sizeof(oneLevel), &bytes);
   ReadProcessMemory(hProcess, (void*)(oneLevel + 0x598), &oneOffset, sizeof(oneOffset), &bytes);
   ReadProcessMemory(hProcess, (void*)oneOffset, &twoLevel, sizeof(twoLevel), &bytes);
   ReadProcessMemory(hProcess, (void*)(twoLevel + 0x1EC), &twoOffset, sizeof(twoOffset), &bytes);
   ReadProcessMemory(hProcess, (void*)twoOffset, &threeLevel, sizeof(threeLevel), &bytes);
   ReadProcessMemory(hProcess, (void*)(threeLevel + 0x9F2), &threeOffset, sizeof(threeOffset), &bytes);

   WriteProcessMemory(hProcess, (void*)threeOffset, (LPCVOID)16550, sizeof(int), &bytes);
[/code]

3levelpointer.png
 Description:
3-Level Pointer in Cheat Engine
 Filesize:  35.3 KB
 Viewed:  15476 Time(s)

3levelpointer.png
Back to top
View user's profile Send private message
Dark Byte
Site Admin
Reputation: 474

Joined: 09 May 2003
Posts: 25953
Location: The netherlands
PostPosted: Sun Feb 07, 2010 3:37 pm    Post subject: Reply with quote
you can actually do this in a lot less instructions

anyhow, quickly reading through your code I'd say "WriteProcessMemory(hProcess, (void*)threeOffset, (LPCVOID)16550, sizeof(int), &bytes); " is wrong
it means you're writing the value stored at address 16550 in your process to the address of the pointer.

I suggest giving the address of an initialized variable that holds the value instead
_________________
Tools give you results. Knowledge gives you control.

Like my help? Join me on Patreon so i can keep helping
Back to top
View user's profile Send private message MSN Messenger
Special11
Cheater
Reputation: 0

Joined: 20 Dec 2009
Posts: 28
PostPosted: Sun Feb 07, 2010 3:59 pm    Post subject: Reply with quote
You mean this?
I don't understand what i need to do :/

Code:

        unsigned int speed = 16550;
   DWORD bytes;

   DWORD oneLevel;
   DWORD oneOffset;
   DWORD twoLevel;
   DWORD twoOffset;
   DWORD threeLevel;
   DWORD threeOffset;

   DWORD BaseAddress = GetModuleBase("TLoader.exe",proc_id);

   ReadProcessMemory(hProcess, (void*)(BaseAddress + 0x26767C), &oneLevel, sizeof(oneLevel), &bytes);
   ReadProcessMemory(hProcess, (void*)(oneLevel + 0x598), &oneOffset, sizeof(oneOffset), &bytes);
   ReadProcessMemory(hProcess, (void*)oneOffset, &twoLevel, sizeof(twoLevel), &bytes);
   ReadProcessMemory(hProcess, (void*)(twoLevel + 0x1EC), &twoOffset, sizeof(twoOffset), &bytes);
   ReadProcessMemory(hProcess, (void*)twoOffset, &threeLevel, sizeof(threeLevel), &bytes);
   ReadProcessMemory(hProcess, (void*)(threeLevel + 0x9F2), &threeOffset, sizeof(threeOffset), &bytes);

   WriteProcessMemory(hProcess, (void*)threeOffset, &speed, sizeof(speed), &bytes);
Back to top
View user's profile Send private message
zirak
Expert Cheater
Reputation: 1

Joined: 15 Jun 2006
Posts: 121
Location: In the sewers
PostPosted: Thu Feb 11, 2010 6:41 pm    Post subject: Reply with quote
Or you can do this
Code:
   DWORD thefirst = (DWORD)(*(DWORD*)0x0040014F + 0x1378);
   DWORD thesecond = (DWORD)(*(DWORD*)thefirst + 0x18);
   DWORD thethird = (DWORD)(*(DWORD*)thesecond + 0x974);
   DWORD theresult = (DWORD)(*(DWORD*)thethird + 0x2B4C);


That's just an example, but that works too.
Back to top
View user's profile Send private message
FullyAwesome
I post too much
Reputation: 0

Joined: 05 Apr 2007
Posts: 4438
Location: Land Down Under
PostPosted: Thu Feb 11, 2010 11:40 pm    Post subject: Reply with quote
zirak wrote:
Or you can do this
Code:
   DWORD thefirst = (DWORD)(*(DWORD*)0x0040014F + 0x1378);
   DWORD thesecond = (DWORD)(*(DWORD*)thefirst + 0x18);
   DWORD thethird = (DWORD)(*(DWORD*)thesecond + 0x974);
   DWORD theresult = (DWORD)(*(DWORD*)thethird + 0x2B4C);


That's just an example, but that works too.


that's assuming he's sharing the memory space of the other program. also, good bump. Laughing
_________________
Back to top
View user's profile Send private message MSN Messenger
Special11
Cheater
Reputation: 0

Joined: 20 Dec 2009
Posts: 28
PostPosted: Sun Feb 14, 2010 2:33 pm    Post subject: Reply with quote
I tried this code:

Code:

DWORD Base = GetModuleBase("TLoader.exe",proc_id);

   DWORD thefirst = (DWORD)(*(DWORD*)Base + 0x26767C);
   DWORD thesecond = (DWORD)(*(DWORD*)thefirst + 0x598);
   DWORD thethird = (DWORD)(*(DWORD*)thesecond + 0x1EC);
   DWORD theresult = (DWORD)(*(DWORD*)thethird + 0x9F2);


But when i'm writing memory application just crashes ;/

Code:

WriteProcessMemory(hProcess, (void*)theresult, (LPCVOID)16550, sizeof(int), NULL);

Or this, both crashes application:
Code:

unsigned long superspeed = 16550;
WriteProcessMemory(hProcess, (void*)theresult, &superspeed, sizeof(superspeed), NULL);


Can someone show me working code, or tell me what's wrong, please?
Back to top
View user's profile Send private message
Anden100
Grandmaster Cheater
Reputation: 0

Joined: 20 Apr 2007
Posts: 668
PostPosted: Wed Feb 17, 2010 4:16 pm    Post subject: Reply with quote
I think you have quite a lot ReadProcessMemory calls, 3 should be enough i belive?

Code:
unsigned long superspeed = 16550;
DWORD buffer;
ReadProcessMemory(hProcess, (LPCVOID)(BaseAddress+0x26767C), &buffer, sizeof(buffer), NULL);
ReadProcessMemory(hProcess, (LPCVOID)(buffer+0x598), &buffer, sizeof(buffer), NULL);
ReadProcessMemory(hProcess, (LPCVOID)(buffer+0x1EC), &buffer, sizeof(buffer), NULL);
buffer+= 0x9F2;

WriteProcessMemory(hProcess, (LPCVOID)buffer, &superspeed, sizeof(superspeed), NULL);


If this doesen't work, try reading this:
http://forum.cheatengine.org/viewtopic.php?t=422516
Back to top
View user's profile Send private message
zirak
Expert Cheater
Reputation: 1

Joined: 15 Jun 2006
Posts: 121
Location: In the sewers
PostPosted: Thu Feb 18, 2010 12:07 am    Post subject: Reply with quote
Special11 wrote:
I tried this code:

Code:

DWORD Base = GetModuleBase("TLoader.exe",proc_id);

   DWORD thefirst = (DWORD)(*(DWORD*)Base + 0x26767C);
   DWORD thesecond = (DWORD)(*(DWORD*)thefirst + 0x598);
   DWORD thethird = (DWORD)(*(DWORD*)thesecond + 0x1EC);
   DWORD theresult = (DWORD)(*(DWORD*)thethird + 0x9F2);


But when i'm writing memory application just crashes ;/

Code:

WriteProcessMemory(hProcess, (void*)theresult, (LPCVOID)16550, sizeof(int), NULL);

Or this, both crashes application:
Code:

unsigned long superspeed = 16550;
WriteProcessMemory(hProcess, (void*)theresult, &superspeed, sizeof(superspeed), NULL);


Can someone show me working code, or tell me what's wrong, please?


I just realized you're using hProcess? In any case is your trainer not a DLL? If it's not then that wouldn't work for you. I personally make DLL-based Trainers makes things easier for me Razz
Edit:
Nvm, that should work for you... dunno why it won't work considering you're telling it's the right exe. Try using CheatEngine to tell if that Multi-level pointer is actually valid. And if it exists when you're trying to write it to that pointer (by adding some extra checks)
Back to top
View user's profile Send private message
Special11
Cheater
Reputation: 0

Joined: 20 Dec 2009
Posts: 28
PostPosted: Sat Feb 20, 2010 9:24 am    Post subject: Reply with quote
Already found a solution. Thx anyway
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Cheat Engine Forum Index -> General programming All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group

CE Wiki   IRC (#CEF)   Twitter
Third party websites