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[Question] ReadProcessMemory With Char Text !?

Discussion on [Question] ReadProcessMemory With Char Text !? within the C/C++ forum part of the Coders Den category.

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Old   #1
 
xBioK1ngz's Avatar
 
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Question [Question] ReadProcessMemory With Char Text !?

CHAR chVersion[11];
DWORD dwVersion = 0x3A1234;
ReadProcessMemory(hProcessHandler,(LPCVOID)dwVersi on,&chVersion,4,NULL);
if ( chVersion == " 1.201301202" )
{
VersionInfoLabel->Text="< OK >";
}
else
{
VersionInfoLabel->Text="< PATCHED >";
}


Was ist falsch?
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Old 02/20/2012, 17:28   #2
 
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Der vierte Parameter gibt die Menge an Bytes an, die gelsen werden sollen. In deinem Fall hast du vier angegeben. Du vergleichst aber mit einem einem 12 stelligen String, also kann das garnicht funktionieren.
Probier es einmal so, da dein String 12 Stellen hat:
Code:
ReadProcessMemory(hProcessHandler,(LPCVOID)dwVersi on,&chVersion,sizeof(CHAR)*12,NULL)
Außerdem musst du dein Puffer-Array auf 12 vergrößern, da der String ansonsten nicht null terminiert ist.
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Old 02/20/2012, 18:22   #3
 
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Außerdem solltest du strcmp benutzen.

Jetzt ist es aber genug mit dem Spoonfeeding. ;O
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Old 02/20/2012, 19:19   #4
 
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Code:
#include <stdio.h>
#include <windows.h>


int main(int argc, char** argv)
{
    HANDLE handle = GetCurrentProcess();
    char cstrVersion[] = "1.201301202";
    const char* ulAddress = cstrVersion;
    DWORD dwRead = 0;
    size_t length = 128;
    char buffer[length];
    ZeroMemory(buffer, length);
    if(ReadProcessMemory(handle, ulAddress, buffer, length, &dwRead) == TRUE)
    {
        buffer[dwRead] = 0;
        if(strcmp(buffer, "1.201301202") == 0)
        {
            printf("%s", "< OK >");
        }else
        {
            printf("%s", "< PATCHED >");
        }
    }

    return 0;
}
EDIT: Letzter Parameter von ReadprocessMemory is gemäß MSDN ein size_t Zeiger.. Aber scheinbar sind meine Header veraltet..
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Old 02/21/2012, 17:33   #5


 
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C++ Lernen + MSDN Lesen = win

#closed
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