Read/write memory trong Go

rw_mem.go

package main

/*
#cgo CFLAGS: -Wincompatible-pointer-types
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <windows.h>

void *open_process(int pid) {
	return (void*)OpenProcess(PROCESS_ALL_ACCESS, 0, pid);
}

void close_process(void *proc) {
	CloseHandle((HANDLE)proc);
}

int read_memory(void *proc, size_t addr, void *buf, size_t size) {
	return ReadProcessMemory((HANDLE)proc, (void*)addr, buf, size, NULL);
}

int write_memory(void *proc, size_t addr, void *buf, size_t size) {
	return WriteProcessMemory((HANDLE)proc, (void*)addr, buf, size, NULL);
}

int cast_int(void *ptr) {
	return *(int*)ptr;
}

*/
import "C"

import (
	"fmt"
	"unsafe"
)

type ptr interface{}

func main() {

    proc := C.open_process(0x01520) //  0x01520- chrome.exe

    if proc == nil {
        fmt.Print("cannot open process!\n") // check lỗi
    } else {
        addr := C.ulonglong(0x000E29D0)
        buf := new(int)

        //val := 110
        //C.write_memory(proc, addr, unsafe.Pointer(&val), C.sizeof_int)
        //                              | cast về void *     | sizeof(int)
        ret := C.read_memory(proc, addr, unsafe.Pointer(buf), C.sizeof_int)
        
        // check lỗi
        if ret != 0 {
            fmt.Printf("value: %d\n", *buf) // đọc giá trị int
        } else {
            fmt.Printf("cannot read on address: %08x\n", addr)
        }

        C.close_process(proc) // đóng process
    }
}