C#中怎么实现dll注入
这篇文章将为大家详细讲解有关C#中怎么实现dll注入,文章内容质量较高,因此小编分享给大家做个参考,希望大家阅读完这篇文章后对相关知识有一定的了解。
我们提供的服务有:成都网站设计、成都网站制作、微信公众号开发、网站优化、网站认证、双辽ssl等。为上千余家企事业单位解决了网站和推广的问题。提供周到的售前咨询和贴心的售后服务,是有科学管理、有技术的双辽网站制作公司
首先需要加入以下API函数:
[DllImport("kernel32.dll")] public static extern int VirtualAllocEx(IntPtr hwnd, int lpaddress, int size, int type, int tect); [DllImport("kernel32.dll")] public static extern int WriteProcessMemory(IntPtr hwnd, int baseaddress, string buffer, int nsize, int filewriten ); [DllImport("kernel32.dll")] public static extern int GetProcAddress(int hwnd, string lpname); [DllImport("kernel32.dll")] public static extern int GetModuleHandleA(string name); [DllImport("kernel32.dll")] public static extern int CreateRemoteThread(IntPtr hwnd, int attrib, int size, int address, int par, int flags, int threadid);
C#声明API比较复杂,因为是调用非托管的dll,所以要用到DllImport来调用非托管的dll,他还有很多属性在这就不多说了,网上有很介绍,可以去查一下,不过c#调用自身的变得动态链接库是倒是很方便,直接加个引用就ok了,调用dll要用的一个引用:using System.Runtime.InteropServices;这个不要忘了加上,下面是编好的所有代码:
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Runtime.InteropServices; using System.Diagnostics; namespace dllinject { public partial class Form1 : Form { [DllImport("kernel32.dll")] //声明API函数 public static extern int VirtualAllocEx(IntPtr hwnd, int lpaddress, int size, int type, int tect); [DllImport("kernel32.dll")] public static extern int WriteProcessMemory(IntPtr hwnd, int baseaddress, string buffer, int nsize, int filewriten ); [DllImport("kernel32.dll")] public static extern int GetProcAddress(int hwnd, string lpname); [DllImport("kernel32.dll")] public static extern int GetModuleHandleA(string name); [DllImport("kernel32.dll")] public static extern int CreateRemoteThread(IntPtr hwnd, int attrib, int size, int address, int par, int flags, int threadid); public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { int ok1; //int ok2; //int hwnd; int baseaddress; int temp=0; int hack; int yan; string dllname; dllname = "c:\\dll.dll"; int dlllength; dlllength = dllname.Length + 1; Process[] pname = Process.GetProcesses(); //取得所有进程 foreach (Process name in pname) //遍历进程 { //MessageBox.Show(name.ProcessName.ToLower()); if (name.ProcessName.ToLower().IndexOf("notepad") != -1) //所示记事本,那么下面开始注入 { baseaddress = VirtualAllocEx(name.Handle, 0, dlllength , 4096, 4); //申请内存空间 if (baseaddress == 0) //返回0则操作失败,下面都是 { MessageBox.Show("申请内存空间失败!!"); Application.Exit(); } ok1 = WriteProcessMemory(name.Handle, baseaddress, dllname, dlllength, temp); //写内存 if (ok1 == 0) { MessageBox.Show("写内存失败!!"); Application.Exit(); } hack = GetProcAddress(GetModuleHandleA("Kernel32"), "LoadLibraryA"); //取得loadlibarary在kernek32.dll地址 if (hack == 0) { MessageBox.Show("无法取得函数的入口点!!"); Application.Exit(); } yan = CreateRemoteThread(name.Handle, 0, 0, hack, baseaddress, 0, temp); //创建远程线程。 if (yan == 0) { MessageBox.Show("创建远程线程失败!!"); Application.Exit(); } else { MessageBox.Show("已成功注入dll!!"); } } } } }
关于C#中怎么实现dll注入就分享到这里了,希望以上内容可以对大家有一定的帮助,可以学到更多知识。如果觉得文章不错,可以把它分享出去让更多的人看到。
网页标题:C#中怎么实现dll注入
URL标题:http://pwwzsj.com/article/jpgpii.html