Load Resource Data From .Rsrc

1 - Load Resource Data From .Rsrc

#include <windows.h>
#include <tlhelp32.h>
#include <stdio.h>
#include "resource.h"
#include <string.h>

PBYTE GetResourceData(SIZE_T* resourceSize) {
    HRSRC hRsrc = NULL;         
    HGLOBAL hGlobal = NULL;     
    PVOID pPayloadAddr = NULL;  

    printf("[*] Searching for resource...\n");
    hRsrc = FindResource(NULL, MAKEINTRESOURCE(IDR_RCDATA1), RT_RCDATA);
    if (hRsrc == NULL) {
        printf("[-] Failed to find resource. Error: %lu\n", GetLastError());
        return NULL;
    }
    printf("[+] Resource found successfully.\n");

    printf("[*] Loading resource...\n");
    hGlobal = LoadResource(NULL, hRsrc);
    if (hGlobal == NULL) {
        printf("[-] Failed to load resource. Error: %lu\n", GetLastError());
        return NULL;
    }
    printf("[+] Resource loaded successfully.\n");

    printf("[*] Locking resource...\n");
    pPayloadAddr = LockResource(hGlobal);
    if (pPayloadAddr == NULL) {
        printf("[-] Failed to lock resource. Error: %lu\n", GetLastError());
        return NULL;
    }
    printf("[+] Resource locked successfully. Payload address: %p\n", pPayloadAddr);

    printf("[*] Getting resource size...\n");
    *resourceSize = SizeofResource(NULL, hRsrc);
    if (*resourceSize == 0) {
        printf("[-] Failed to get resource size. Error: %lu\n", GetLastError());
        return NULL;
    }
    printf("[+] Resource size: %zu bytes.\n", *resourceSize);

    printf("[*] Allocating memory for writable payload...\n");
    PBYTE pWritablePayload = (PBYTE)malloc(*resourceSize);
    if (pWritablePayload == NULL) {
        printf("[-] Failed to allocate memory for writable payload.\n");
        return NULL;
    }
    printf("[+] Memory allocated successfully at address: %p\n", pWritablePayload);

    printf("[*] Copying resource data to allocated memory...\n");
    memcpy(pWritablePayload, pPayloadAddr, *resourceSize);
    printf("[+] Resource data copied successfully.\n");

    return pWritablePayload;
}

int main() {
    SIZE_T sPayloadSize = 0;

    printf("[#] Calling GetResourceData...\n");
    PBYTE pWritablePayload = GetResourceData(&sPayloadSize);

    if (pWritablePayload == NULL) {
        printf("[-] Failed to get resource data.\n");
        return 1;
    }

    printf("[+] Successfully retrieved resource data.\n");
    printf("[+] Payload Size: %zu bytes\n", sPayloadSize);

    free(pWritablePayload);
    printf("[#] Memory freed successfully.\n");

    return 0;
}