编写一个带有socket通信功能的插件，x64dbg运行后，用户点击链接按钮可直接连接到外部的python中，python作为服务端，当x64dbg内部出现某个事件后，自动将消息推送到外部python脚本上，实现反向传参的目的。

首先编写插件端代码，代码中直接初始化套接字，用户服务端启动后点击connect按钮链接到服务端，链接成功后，一但调试器加载了程序则自动触发CBINITDEBUG(CBTYPE cbType, PLUG_CB_INITDEBUG* info)回调函数，并通过socket将参数送出到外部。

#include "pluginmain.h"
#include <Windows.h>
#include <process.h>#pragma comment(lib,"ws2_32.lib")
#define IP "127.0.0.1"
#define PORT 9999int pluginHandle;
HWND hwndDlg;
int hMenu;
int hMenuDisasm;
int hMenuDump;
int hMenuStack;WSADATA WSAData;
SOCKET sock;
struct sockaddr_in ClientAddr;// 在这里初始化插件数据。
bool pluginInit(PLUG_INITSTRUCT* initStruct)
{// 返回false以取消加载插件。return true;
}// 在此处取消初始化插件数据。
void pluginStop()
{
}// 在这里做GUI/菜单相关的事情。
void pluginSetup()
{
}// 导出函数
extern "C" __declspec(dllexport) void plugsetup(PLUG_SETUPSTRUCT* setupStruct);
extern "C" __declspec(dllexport) bool pluginit(PLUG_INITSTRUCT* initStruct);// 导出自定义的两个功能
extern "C" __declspec(dllexport) void CBMENUENTRY(CBTYPE cbType, PLUG_CB_MENUENTRY* info);
extern "C" __declspec(dllexport) void CBINITDEBUG(CBTYPE cbType, PLUG_CB_INITDEBUG* info);// 菜单回调函数(初始化时自动发送套接字)附加进程触发
void CBINITDEBUG(CBTYPE cbType, PLUG_CB_INITDEBUG* info)
{send(sock, (char *)&info, 1024, 0);_plugin_logprintf("size = %d \n", sizeof(PLUG_CB_INITDEBUG));_plugin_logprintf("func = %s \n", info->szFileName);
}// --------------------------------------------------------------------
// 基础功能
// --------------------------------------------------------------------// 命令触发: 开启Socket的命令
bool ConnectSocket(int argc, char **argv)
{_plugin_logprintf("start socket \n");if (WSAStartup(MAKEWORD(2, 0), &WSAData) != SOCKET_ERROR){ClientAddr.sin_family = AF_INET;ClientAddr.sin_port = htons(PORT);ClientAddr.sin_addr.s_addr = inet_addr(IP);}sock = socket(AF_INET, SOCK_STREAM, 0);int Ret = connect(sock, (LPSOCKADDR)&ClientAddr, sizeof(ClientAddr));return Ret;
}// 命令触发: 关闭Socket的命令
bool CloseSocket(int argc, char **argv)
{_plugin_logprintf("stop socket \n");send(sock, "SocketClose", 11, 0);closesocket(sock);WSACleanup();return true;
}// 菜单被点击触发此回调
void CBMENUENTRY(CBTYPE cbType, PLUG_CB_MENUENTRY* info)
{switch (info->hEntry){case 1:ConnectSocket(0, 0);break;case 2:CloseSocket(0, 0);break;}
}PLUG_EXPORT bool pluginit(PLUG_INITSTRUCT* initStruct)
{initStruct->pluginVersion = PLUGIN_VERSION;initStruct->sdkVersion = PLUG_SDKVERSION;strncpy_s(initStruct->pluginName, PLUGIN_NAME, _TRUNCATE);pluginHandle = initStruct->pluginHandle;// 插件初始化const char *name = "LyScriptCallBack";memset(initStruct->pluginName, 0, 128);memcpy(initStruct->pluginName, name, strlen(name));return pluginInit(initStruct);
}PLUG_EXPORT bool plugstop()
{pluginStop();return true;
}PLUG_EXPORT void plugsetup(PLUG_SETUPSTRUCT* setupStruct)
{hwndDlg = setupStruct->hwndDlg;hMenu = setupStruct->hMenu;hMenuDisasm = setupStruct->hMenuDisasm;hMenuDump = setupStruct->hMenuDump;hMenuStack = setupStruct->hMenuStack;// 增加连接选项char sub_connect[] = "Connect";_plugin_menuaddentry(setupStruct->hMenu, 1, sub_connect);// 添加关闭连接选项char sub_close[] = "CloseConnect";_plugin_menuaddentry(setupStruct->hMenu, 2, sub_close);// 注册ConnectSocket开启Socket命令_plugin_registercommand(pluginHandle, "ConnectSocket", ConnectSocket, true);// 注册CloseSocket关闭Socket命令_plugin_registercommand(pluginHandle, "CloseSocket", CloseSocket, true);pluginSetup();
}

客户端则负责接收参数，收到后直接使用MyStruct(Structure)类，格式化为特定结构体，并输出内部成员参数。

import socket
import struct
from ctypes import *ip_addr=("localhost",9999)server = socket.socket()
server.bind(ip_addr)
server.listen(5)class MyStruct(Structure):_pack_ = 1_fields_ = [("szFileName", c_char * 256)]def unpack(self,buffer):(self.szFileName) = struct.unpack("< 256s",buffer)while True:conn,addr=server.accept()print(addr)while True:try:recv_data = str(conn.recv(8192), encoding="utf-8")if len(recv_data) == 11 and recv_data == "SocketClose":conn.close()print("close")else:recv_struct = MyStruct()recv_struct.unpack(recv)print(recv_struct.szFileName)except Exception:breakserver.close()

首先运行python脚本让其侦听特定端口，然后再x64dbg中点击connect链接按钮，链接成功后即可看到输出信息。