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angerist
Grandmaster Cheater Supreme
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Joined: 18 Jun 2007
Posts: 1011
Location: Australia.
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 Posted: Fri Jul 04, 2008 12:50 am Post subject: [C++] Calling functions within a process |
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Alright as you see bellow this is the source that I've created in about 30 minutes. I compiled it successfully and without error. I've been researching dll's and how they work, and calling functions within a process.
Addy I used
| Code: | | SpamHack1: 0x0046EC10 |
I get no response when injecting the dll to MapleStory.exe. What is my error. Thank you fellow Cef members
Final Source:
| Code: | #include "stdafx.h"
#include "dos.h"
void MainLoop()
{
void *addyres = (void*)0x0046EC10;
MessageBox(0,"About to call the function..","Calling",MB_OK);
__asm
{
call [addyres]
}
return;
}
BOOL APIENTRY DllMain( HMODULE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
switch(ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
DisableThreadLibraryCalls(hModule);
CreateThread(NULL, 0, (unsigned long(__stdcall*)(void*))MainLoop, NULL, 0, NULL);
}
return TRUE;
} |
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HomerSexual
Grandmaster Cheater Supreme
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Joined: 03 Feb 2007
Posts: 1657
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| Posted: Fri Jul 04, 2008 1:22 am Post subject: |
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Call GetLastError() and debug
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oib111
I post too much
 Reputation: 0
Joined: 02 Apr 2007
Posts: 2947
Location: you wanna know why?
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| Posted: Fri Jul 04, 2008 1:38 am Post subject: |
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Don't define your address that way, define it this way.
| Code: |
LPVOID addyres = 0x0046EC10;
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Also, is your function address a dynamic address, and I'm not quite sure, but you maybe should try:
I believe that you can do a singe line of assembly like that.
And you should use CreateThrread like this (if you have your function defined in dos.h which I assume you do, then just use it like this and leave out your assembly and address declaration.
| Code: |
CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)SpamHack1, NULL, 0);
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| 8D wrote: |
cigs dont make people high, which weed does, which causes them to do bad stuff. like killing |
Last edited by oib111 on Fri Jul 04, 2008 1:43 am; edited 1 time in total |
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angerist
Grandmaster Cheater Supreme
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Joined: 18 Jun 2007
Posts: 1011
Location: Australia.
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| Posted: Fri Jul 04, 2008 1:42 am Post subject: |
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I'll test those suggestions and reply. Thanks you two.
I've researched the little snippet you gave me and didn't find much. But I tried it and got the following error . " error C2440: 'initializing' : cannot convert from 'const int' to 'void *". Oh well. Im sure we can figure it out. I'll do some more googling and post any useful info that I find.
| Code: | #include "stdafx.h"
#include "dos.h"
void MainLoop()
{
LPVOID addyres = 0x0046EC10;
MessageBox(0,"About to call the function..","Calling",MB_OK);
__asm
{
call [addyres]
}
return;
}
BOOL APIENTRY DllMain( HMODULE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
switch(ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
DisableThreadLibraryCalls(hModule);
CreateThread(NULL, 0, (unsigned long(__stdcall*)(void*))MainLoop, NULL, 0, NULL);
}
return TRUE;
} |
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HalfPrime
Grandmaster Cheater
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Joined: 12 Mar 2008
Posts: 532
Location: Right there...On your monitor
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| Posted: Fri Jul 04, 2008 10:28 am Post subject: |
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void* func() = 0x0046EC10;
func();
No need for ASM.
Are you sure it doesn't take any arguments and doesn't return anything?
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oib111
I post too much
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Joined: 02 Apr 2007
Posts: 2947
Location: you wanna know why?
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| Posted: Fri Jul 04, 2008 11:35 am Post subject: |
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Ok, where is SpamHack1 defined? If it is defined in dos.h just do this:
| Code: |
#include "stdafx.h"
#include "dos.h"
BOOL APIENTRY DllMain( HMODULE hModule, DWORD ul_reason_for_call,
LPVOID lpReserved)
{
if(ul_reason_for_call == DLL_PROCESS_ATTACH) {
DisableThreadLibraryCalls(hModule);
CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)SpamHack1, NULL, 0, NULL);
}
return TRUE;
}
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Edit:
Are you using Visual Studio or Dev-C++?
_________________
| 8D wrote: |
cigs dont make people high, which weed does, which causes them to do bad stuff. like killing |
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angerist
Grandmaster Cheater Supreme
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Joined: 18 Jun 2007
Posts: 1011
Location: Australia.
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| Posted: Fri Jul 04, 2008 9:28 pm Post subject: |
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Im coding in VS++ . I'll try those things out. And repost.
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